/* roulang page: index */
:root {
            --bg-0: #050d18;
            --bg-1: #081526;
            --bg-2: #0c1f33;
            --glass-bg: rgba(13, 34, 56, 0.55);
            --glass-bg-strong: rgba(16, 40, 66, 0.78);
            --glass-border: rgba(120, 220, 255, 0.18);
            --primary: #00e2ff;
            --primary-2: #4c6cff;
            --accent: #ffb648;
            --text-1: #e8f2ff;
            --text-2: rgba(214, 230, 250, 0.76);
            --text-3: rgba(170, 195, 225, 0.46);
            --success: #2ee6a8;
            --radius-xl: 24px;
            --radius-md: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 12px 40px rgba(0, 10, 30, 0.25);
            --shadow-lift: 0 18px 60px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(0, 226, 255, 0.1);
            --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            --font-serif: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", serif;
            --font-num: "DIN Alternate", "Roboto Mono", "JetBrains Mono", monospace;
        }

        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            margin: 0;
            background: var(--bg-0);
            color: var(--text-1);
            font-family: var(--font-main);
            line-height: 1.75;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, opacity 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            display: block;
            border: 0;
        }
        button,
        input {
            font-family: inherit;
            border: 0;
            outline: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        [tabindex]:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 4px;
            box-shadow: 0 0 0 6px rgba(0, 226, 255, 0.14);
        }
        .skip-link {
            position: fixed;
            left: 16px;
            top: -100px;
            z-index: 3000;
            background: rgba(0, 226, 255, 0.95);
            color: #001422;
            padding: 8px 18px;
            border-radius: 999px;
            font-weight: 600;
            transition: top 0.25s ease;
        }
        .skip-link:focus {
            top: 16px;
        }
        .text-glow {
            color: var(--primary);
        }
        .text-soft {
            color: var(--text-2);
        }
        .text-dim {
            color: var(--text-3);
        }
        .section-pad {
            padding: 92px 0;
        }
        .overflow-hidden {
            overflow: hidden;
        }

        .btn-glow-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            justify-content: center;
            background: linear-gradient(135deg, #00e2ff, #4c6cff);
            color: #001322;
            border-radius: var(--radius-pill);
            font-weight: 700;
            border: 0;
            padding: 13px 30px;
            letter-spacing: 0.02em;
            cursor: pointer;
            box-shadow: 0 0 16px rgba(0, 226, 255, 0.25), 0 12px 30px rgba(0, 10, 30, 0.28);
            transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
        }
        .btn-glow-primary:hover {
            color: #001322;
            transform: translateY(-3px);
            box-shadow: 0 0 28px rgba(0, 226, 255, 0.5), 0 18px 40px rgba(0, 10, 30, 0.3);
        }
        .btn-glass {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            justify-content: center;
            background: rgba(120, 220, 255, 0.08);
            color: var(--text-1);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-pill);
            padding: 12px 28px;
            font-weight: 600;
            cursor: pointer;
            backdrop-filter: blur(8px);
            transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .btn-glass:hover {
            color: var(--primary);
            border-color: rgba(0, 226, 255, 0.45);
            background: rgba(0, 226, 255, 0.08);
            box-shadow: 0 8px 30px rgba(0, 226, 255, 0.12);
            transform: translateY(-2px);
        }
        .arrow-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--text-1);
        }
        .arrow-link i {
            transition: transform 0.25s ease;
        }
        .arrow-link:hover i {
            transform: translateX(4px);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            gap: 24px;
            justify-content: space-between;
            margin-bottom: 38px;
        }
        .section-head .eyebrow {
            color: var(--primary);
            font-size: 13px;
            letter-spacing: 0.2em;
            font-weight: 600;
            text-transform: uppercase;
        }
        .section-title {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 700;
            line-height: 1.28;
            margin: 8px 0 0;
            position: relative;
            padding-left: 18px;
        }
        .section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.18em;
            width: 6px;
            height: 0.7em;
            border-radius: 8px;
            background: linear-gradient(180deg, var(--primary), var(--primary-2));
            box-shadow: 0 0 16px rgba(0, 226, 255, 0.65);
        }
        .section-desc {
            color: var(--text-2);
            max-width: 580px;
            margin: 12px 0 0;
        }
        .section-desc-end {
            margin-left: auto;
            max-width: 360px;
            color: var(--text-2);
            font-size: 0.92rem;
        }

        body {
            background-image:
                radial-gradient(rgba(0, 226, 255, 0.035) 1px, transparent 1px);
            background-size: 34px 34px;
            background-position: 50% 0;
        }
        main {
            position: relative;
            z-index: 1;
        }
        main::before {
            content: "";
            position: fixed;
            inset: 0;
            z-index: -1;
            pointer-events: none;
            background:
                radial-gradient(ellipse at 12% 8%, rgba(76, 108, 255, 0.13), transparent 35%),
                radial-gradient(ellipse at 88% 16%, rgba(0, 226, 255, 0.09), transparent 30%),
                linear-gradient(120deg, rgba(0, 226, 255, 0.025) 0%, transparent 30%),
                linear-gradient(300deg, rgba(76, 108, 255, 0.03) 0%, transparent 35%);
        }

        .site-header {
            position: relative;
            z-index: 100;
            padding: 18px 0 6px;
        }
        .dock-wrap {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .dock-nav {
            background: var(--glass-bg-strong);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-pill);
            padding: 10px 18px;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            box-shadow: var(--shadow-card);
            transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .site-header.is-scrolled .dock-nav {
            background: rgba(7, 24, 42, 0.9);
            box-shadow: 0 16px 50px rgba(0, 0, 0, 0.48), 0 0 0 1px rgba(0, 226, 255, 0.08);
            border-color: rgba(120, 220, 255, 0.24);
        }
        .brand-logo {
            display: inline-flex;
            align-items: baseline;
            font-size: 1.28rem;
            font-weight: 700;
            color: var(--text-1);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .brand-logo .brand-main {
            background: linear-gradient(115deg, #dffaff, var(--primary) 45%, #8fa7ff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .brand-logo .brand-sub {
            font-size: 0.88em;
            color: rgba(190, 220, 250, 0.72);
            margin-left: 2px;
            font-weight: 500;
        }
        .nav-items .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px 16px;
            margin: 0 3px;
            color: rgba(224, 238, 255, 0.78);
            border-radius: 999px;
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            white-space: nowrap;
        }
        .nav-items .nav-link:hover {
            color: var(--primary);
            background: rgba(0, 226, 255, 0.06);
        }
        .nav-items .nav-link.active {
            color: #eaffff;
            background: linear-gradient(135deg, rgba(0, 226, 255, 0.15), rgba(76, 108, 255, 0.12));
            box-shadow: inset 0 0 0 1px rgba(0, 226, 255, 0.22);
        }
        .nav-items .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            height: 2px;
            width: 16px;
            border-radius: 8px;
            background: var(--primary);
            box-shadow: 0 0 10px var(--primary);
        }
        .nav-cta {
            background: linear-gradient(135deg, #00e2ff, #4c6cff);
            color: #001722;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.92rem;
            padding: 9px 22px;
            box-shadow: 0 0 16px rgba(0, 226, 255, 0.35);
            white-space: nowrap;
        }
        .nav-cta:hover {
            color: #001722;
            transform: translateY(-2px);
            box-shadow: 0 0 26px rgba(0, 226, 255, 0.5);
        }
        .navbar-toggler {
            border: 1px solid var(--glass-border);
            background: rgba(0, 226, 255, 0.06);
            border-radius: 999px;
            padding: 7px 13px;
            color: var(--primary);
            line-height: 1;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 226, 255, 0.25);
        }

        .hero-section {
            min-height: 100vh;
            min-height: 780px;
            display: flex;
            align-items: center;
            position: relative;
            padding: 110px 0 80px;
            isolation: isolate;
            background-image: url("/assets/images/backpic/back-1.png");
            background-size: cover;
            background-position: center 20%;
            background-repeat: no-repeat;
        }
        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(115deg, rgba(3, 9, 18, 0.96) 10%, rgba(5, 14, 27, 0.82) 44%, rgba(8, 24, 40, 0.55) 100%);
        }
        .hero-section::after {
            content: "";
            position: absolute;
            z-index: -1;
            inset: 0;
            background:
                radial-gradient(ellipse at 70% 30%, rgba(0, 226, 255, 0.13), transparent 45%),
                radial-gradient(ellipse at 10% 90%, rgba(76, 108, 255, 0.1), transparent 40%);
        }
        .hero-section .light-line {
            position: absolute;
            left: 0;
            height: 1px;
            width: 100%;
            background: linear-gradient(90deg, transparent, rgba(0, 226, 255, 0.28), transparent);
            z-index: 0;
            pointer-events: none;
        }
        .hero-section .light-line.l1 {
            top: 18%;
        }
        .hero-section .light-line.l2 {
            top: 38%;
            width: 80%;
            opacity: 0.65;
        }
        .hero-section .light-line.l3 {
            bottom: 18%;
            width: 75%;
            opacity: 0.4;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(0, 226, 255, 0.07);
            border: 1px solid rgba(0, 226, 255, 0.25);
            border-radius: 999px;
            padding: 7px 18px;
            font-size: 0.92rem;
            font-weight: 600;
            color: #c7f6ff;
            margin-bottom: 28px;
            backdrop-filter: blur(10px);
        }
        .hero-tag .pulse-dot {
            width: 8px;
            height: 8px;
            background: var(--success);
            border-radius: 50%;
            box-shadow: 0 0 0 0 rgba(46, 230, 168, 0.6);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0% {
                box-shadow: 0 0 0 0 rgba(46, 230, 168, 0.5);
            }
            70% {
                box-shadow: 0 0 0 9px rgba(46, 230, 168, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(46, 230, 168, 0);
            }
        }
        .hero-title {
            font-size: clamp(2.4rem, 5vw, 4.2rem);
            font-weight: 700;
            line-height: 1.18;
            margin: 0 0 20px;
            letter-spacing: 0.01em;
            max-width: 820px;
            background: linear-gradient(105deg, #f0fbff 8%, #9fe9ff 48%, #c9d6ff 90%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-lead {
            font-size: 1.18rem;
            color: var(--text-2);
            max-width: 620px;
            margin-bottom: 35px;
            font-weight: 400;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-glass-card {
            position: absolute;
            right: 8%;
            bottom: 14%;
            width: 260px;
            background: rgba(8, 24, 41, 0.45);
            border: 1px solid rgba(120, 220, 255, 0.2);
            border-radius: 20px;
            backdrop-filter: blur(16px);
            padding: 18px 20px;
            box-shadow: var(--shadow-card);
        }
        .hero-glass-card .status-row {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
        }
        .hero-glass-card .status-label {
            font-size: 0.85rem;
            color: var(--text-2);
        }
        .hero-glass-card .status-value {
            font-family: var(--font-num);
            color: var(--success);
            font-weight: 600;
            font-size: 0.95rem;
            margin-left: auto;
        }
        .hero-glass-card .card-rule {
            height: 1px;
            background: linear-gradient(90deg, rgba(0, 226, 255, 0.3), transparent);
            margin: 12px 0;
        }
        .hero-glass-card .safe-line {
            color: var(--text-3);
            font-size: 0.82rem;
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .hero-glass-card .safe-line i {
            color: var(--primary);
        }

        .metrics-strip {
            padding: 0 0 96px;
            margin-top: -30px;
            position: relative;
            z-index: 4;
        }
        .metrics-panel {
            background: rgba(9, 23, 39, 0.85);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(16px);
            display: flex;
            flex-wrap: wrap;
        }
        .metric-cell {
            flex: 1 1 0;
            min-width: 180px;
            padding: 28px 24px;
            text-align: center;
            border-right: 1px solid rgba(120, 220, 255, 0.1);
        }
        .metric-cell:last-child {
            border-right: 0;
        }
        .metric-icon {
            width: 46px;
            height: 46px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            background: rgba(0, 226, 255, 0.08);
            border: 1px solid rgba(0, 226, 255, 0.18);
            border-radius: 14px;
            color: var(--primary);
            font-size: 1.3rem;
        }
        .metric-cell strong {
            display: block;
            font-size: 1.1rem;
            font-weight: 650;
            margin-bottom: 4px;
        }
        .metric-cell p {
            color: var(--text-3);
            font-size: 0.88rem;
            margin: 0;
        }

        .play-section {
            background: var(--bg-1);
            position: relative;
        }
        .play-section::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            left: 0;
            height: 120px;
            background: radial-gradient(ellipse at 22% 0%, rgba(0, 226, 255, 0.08), transparent 60%);
        }
        .play-steps {
            position: relative;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 28px;
        }
        .step-track-line {
            position: absolute;
            top: 58px;
            left: 12%;
            right: 12%;
            height: 1px;
            z-index: 0;
            background: linear-gradient(90deg, transparent, rgba(0, 226, 255, 0.45) 25%, rgba(76, 108, 255, 0.4) 75%, transparent);
        }
        .step-card {
            position: relative;
            z-index: 1;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            padding: 38px 28px 30px;
            text-align: center;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .step-card:hover {
            transform: translateY(-5px);
            border-color: rgba(0, 226, 255, 0.5);
            box-shadow: var(--shadow-lift);
        }
        .step-badge {
            width: 72px;
            height: 72px;
            margin: 0 auto 22px;
            background: rgba(13, 34, 56, 0.8);
            border: 1px solid rgba(120, 220, 255, 0.22);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 0 24px rgba(0, 226, 255, 0.07);
            position: relative;
        }
        .step-card:nth-child(1) .step-badge,
        .step-card:nth-child(2) .step-badge,
        .step-card:nth-child(3) .step-badge {
            font-family: var(--font-num);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            background: linear-gradient(150deg, rgba(0, 226, 255, 0.16), rgba(76, 108, 255, 0.09));
        }
        .step-card .step-icon {
            position: absolute;
            right: -8px;
            bottom: -6px;
            width: 28px;
            height: 28px;
            border-radius: 10px;
            background: var(--bg-0);
            color: var(--primary);
            border: 1px solid rgba(0, 226, 255, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
        }
        .step-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .step-card p {
            color: var(--text-2);
            font-size: 0.95rem;
            margin: 0;
        }

        .feature-section {
            position: relative;
            background-image: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
            background-image: url("/assets/images/backpic/back-3.webp"), radial-gradient(ellipse at 72% 40%, rgba(76, 108, 255, 0.1), transparent 50%);
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .feature-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(5, 15, 28, 0.9);
        }
        .feature-grid {
            position: relative;
            z-index: 1;
        }
        .feature-item {
            height: 100%;
            background: rgba(10, 26, 43, 0.62);
            border: 1px solid rgba(120, 220, 255, 0.15);
            border-radius: var(--radius-xl);
            padding: 34px 30px;
            backdrop-filter: blur(12px);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .feature-item:hover {
            transform: translateY(-5px);
            border-color: rgba(0, 226, 255, 0.5);
            box-shadow: var(--shadow-lift);
        }
        .feature-icon {
            width: 54px;
            height: 54px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(145deg, rgba(0, 226, 255, 0.13), rgba(76, 108, 255, 0.1));
            border: 1px solid rgba(0, 226, 255, 0.2);
            color: var(--primary);
            border-radius: 16px;
            font-size: 1.4rem;
            margin-bottom: 22px;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
        }
        .feature-item h3 {
            font-size: 1.15rem;
            font-weight: 700;
        }
        .feature-item p {
            margin: 10px 0 0;
            color: var(--text-2);
            font-size: 0.94rem;
        }

        .reward-section {
            background: var(--bg-0);
            position: relative;
            overflow: hidden;
        }
        .reward-section::before {
            content: "";
            position: absolute;
            top: 10%;
            right: -100px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 182, 72, 0.1), transparent 70%);
        }
        .reward-wrap {
            display: grid;
            grid-template-columns: 0.9fr 1.2fr;
            gap: 24px;
            align-items: stretch;
        }
        .reward-main-card {
            position: relative;
            display: flex;
            flex-direction: column;
            background: rgba(12, 31, 51, 0.5);
            border: 1px solid rgba(255, 182, 72, 0.16);
            border-radius: var(--radius-xl);
            overflow: hidden;
            min-height: 460px;
            box-shadow: var(--shadow-card);
        }
        .reward-main-card .reward-image {
            overflow: hidden;
            flex-shrink: 0;
        }
        .reward-main-card .reward-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            transition: transform 0.8s ease;
        }
        .reward-main-card:hover .reward-image img {
            transform: scale(1.03);
        }
        .reward-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(5, 13, 24, 0.55) 100%);
        }
        .reward-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 182, 72, 0.16);
            border: 1px solid rgba(255, 182, 72, 0.35);
            color: #ffdfae;
            padding: 4px 12px;
            font-size: 0.8rem;
            border-radius: 999px;
            font-weight: 650;
            backdrop-filter: blur(6px);
            display: inline-flex;
            gap: 6px;
            align-items: center;
        }
        .reward-body {
            padding: 23px 24px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .reward-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
        }
        .reward-body p {
            color: var(--text-2);
            font-size: 0.95rem;
            flex: 1;
            margin: 10px 0 14px;
        }
        .reward-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 650;
            color: #d9eaff;
        }
        .reward-stack {
            display: grid;
            gap: 24px;
        }
        .reward-mini-card {
            display: flex;
            background: rgba(12, 30, 49, 0.55);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            overflow: hidden;
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
        }
        .reward-mini-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 182, 72, 0.35);
            background: rgba(14, 35, 57, 0.7);
        }
        .reward-mini-thumb {
            width: 38%;
            flex-shrink: 0;
            overflow: hidden;
        }
        .reward-mini-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .reward-mini-body {
            padding: 19px 20px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .reward-mini-label {
            color: var(--accent);
            font-size: 0.78rem;
            letter-spacing: 0.12em;
            font-weight: 650;
            margin-bottom: 6px;
        }
        .reward-mini-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .reward-mini-body p {
            margin: 0;
            color: var(--text-3);
            font-size: 0.86rem;
        }
        .reward-section .section-btn {
            margin-top: 44px;
            text-align: center;
        }

        .progress-section {
            background: linear-gradient(180deg, var(--bg-0), var(--bg-1));
            position: relative;
        }
        .progress-panel {
            background: rgba(12, 30, 50, 0.64);
            border: 1px solid rgba(0, 226, 255, 0.16);
            border-radius: var(--radius-xl);
            padding: clamp(24px, 4vw, 52px);
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .progress-panel::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 160px;
            height: 160px;
            background: radial-gradient(circle, rgba(0, 226, 255, 0.13), transparent 70%);
            pointer-events: none;
        }
        .progress-top {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 24px;
        }
        .progress-top h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin: 0;
        }
        .status-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(46, 230, 168, 0.14);
            color: var(--success);
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 0.8rem;
            border: 1px solid rgba(46, 230, 168, 0.24);
            font-weight: 600;
            gap: 5px;
        }
        .progress-bar-track {
            height: 12px;
            background: rgba(2, 10, 20, 0.7);
            border-radius: 999px;
            overflow: hidden;
            margin: 22px 0 30px;
            position: relative;
        }
        .progress-bar-fill {
            height: 100%;
            border-radius: 999px;
            background: linear-gradient(90deg, #00e2ff, #4c6cff);
            width: 60%;
            box-shadow: 0 0 16px rgba(0, 226, 255, 0.25);
            position: relative;
        }
        .progress-bar-fill::after {
            content: "";
            position: absolute;
            right: 0;
            top: 50%;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            transform: translate(50%, -50%);
            background: var(--primary);
            box-shadow: 0 0 16px #00e2ff;
            animation: pulse-dot 1.8s infinite;
        }
        .progress-info {
            display: flex;
            justify-content: space-between;
            color: var(--text-2);
            font-size: 0.85rem;
            margin-top: 5px;
        }
        .progress-points {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
            margin-top: 34px;
        }
        .progress-point {
            border: 1px solid rgba(120, 220, 255, 0.1);
            border-radius: var(--radius-md);
            background: rgba(6, 15, 27, 0.3);
            padding: 16px 14px;
            display: flex;
            flex-direction: column;
            align-items: center;
            min-height: 112px;
            position: relative;
        }
        .progress-point.done .point-status {
            color: var(--success);
            box-shadow: 0 0 12px rgba(46, 230, 168, 0.35);
            border-color: rgba(46, 230, 168, 0.5);
        }
        .progress-point.active .point-status {
            color: var(--primary);
            box-shadow: 0 0 12px rgba(0, 226, 255, 0.4);
            border-color: rgba(0, 226, 255, 0.5);
        }
        .progress-point.wait .point-status {
            color: var(--text-3);
            border-color: rgba(170, 195, 225, 0.15);
        }
        .point-status {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--glass-border);
            background: rgba(0, 10, 20, 0.32);
            margin-bottom: 10px;
            font-size: 1rem;
        }
        .point-status.loading {
            animation: spin-pulse 1.3s infinite linear;
        }
        .progress-point span {
            font-size: 0.83rem;
            color: var(--text-2);
            line-height: 1.5;
            text-align: center;
        }
        @keyframes spin-pulse {
            0% {
                box-shadow: 0 0 0 0 rgba(0, 226, 255, 0.4);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(0, 226, 255, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(0, 226, 255, 0);
            }
        }
        .progress-note {
            margin-top: 26px;
            color: var(--text-3);
            font-size: 0.86rem;
            text-align: center;
            border-top: 1px solid rgba(120, 220, 255, 0.08);
            padding-top: 18px;
        }

        .news-section {
            background: var(--bg-0);
            position: relative;
        }
        .news-section .section-head .arrow-link {
            color: var(--text-1);
        }
        .news-feature-card,
        .news-mini-card {
            position: relative;
            background: rgba(9, 24, 40, 0.55);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            overflow: hidden;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .news-feature-card:hover,
        .news-mini-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 226, 255, 0.45);
            box-shadow: var(--shadow-lift);
        }
        .news-grid-wrap {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 24px;
        }
        .news-feature-card .feature-cover {
            overflow: hidden;
            display: block;
        }
        .news-feature-card .feature-cover img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .news-feature-card:hover .feature-cover img {
            transform: scale(1.02);
        }
        .news-feature-body {
            padding: 26px 26px 30px;
        }
        .news-meta-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }
        .news-cat {
            display: inline-flex;
            align-items: center;
            background: rgba(0, 226, 255, 0.1);
            border: 1px solid rgba(0, 226, 255, 0.12);
            color: #8dffff;
            font-size: 0.77rem;
            border-radius: 999px;
            padding: 4px 12px;
            font-weight: 600;
            gap: 5px;
        }
        .news-date {
            color: var(--text-3);
            font-size: 0.82rem;
            font-family: var(--font-num);
        }
        .news-title {
            font-size: 1.2rem;
            font-weight: 700;
            line-height: 1.45;
            margin: 0 0 10px;
        }
        .news-title a {
            color: var(--text-1);
        }
        .news-title a:hover {
            color: var(--primary);
        }
        .news-desc {
            color: var(--text-2);
            font-size: 0.95rem;
            line-height: 1.8;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 18px;
        }
        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
        }
        .news-mini-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .news-mini-card {
            display: flex;
            padding: 18px;
            gap: 16px;
        }
        .mini-cover {
            width: 110px;
            flex-shrink: 0;
            overflow: hidden;
            border-radius: 14px;
        }
        .mini-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 92px;
        }
        .news-mini-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .news-mini-body .news-date {
            margin-top: 6px;
        }
        .news-mini-body .news-title {
            font-size: 0.96rem;
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-mini-body .news-cat {
            align-self: flex-start;
            font-size: 0.72rem;
            padding: 2px 9px;
        }
        .news-empty {
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            background: rgba(9, 23, 38, 0.5);
            backdrop-filter: blur(12px);
            padding: 50px 30px;
            text-align: center;
            color: var(--text-3);
        }
        .news-empty-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            border-radius: 20px;
            background: rgba(0, 226, 255, 0.05);
            border: 1px solid rgba(0, 226, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.6rem;
        }

        .faq-section {
            background: linear-gradient(180deg, var(--bg-0), var(--bg-1));
            overflow: hidden;
            position: relative;
        }
        .faq-layout {
            display: grid;
            grid-template-columns: 0.65fr 1.35fr;
            gap: 44px;
            align-items: start;
        }
        .faq-intro .section-title {
            padding-left: 0;
        }
        .faq-intro .section-title::before {
            display: none;
        }
        .faq-help-text {
            color: var(--text-2);
            margin: 18px 0 28px;
        }
        .faq-mini-tag {
            display: inline-flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .faq-mini-tag span {
            background: rgba(0, 226, 255, 0.05);
            border: 1px solid rgba(120, 220, 255, 0.14);
            border-radius: 999px;
            font-size: 0.82rem;
            color: var(--text-2);
            padding: 5px 13px;
        }
        .accordion.faq-accordion {
            --bs-accordion-bg: transparent;
            --bs-accordion-border-width: 0;
            --bs-accordion-active-bg: transparent;
            --bs-accordion-btn-focus-box-shadow: none;
        }
        .accordion-item {
            border: 1px solid rgba(120, 220, 255, 0.12);
            background: rgba(10, 27, 45, 0.45);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
            backdrop-filter: blur(8px);
            transition: border-color 0.25s ease;
        }
        .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(0, 226, 255, 0.3);
        }
        .accordion-button {
            background: rgba(10, 27, 45, 0.2);
            color: var(--text-1);
            font-weight: 600;
            font-size: 0.97rem;
            padding: 18px 22px;
            border: 0;
            box-shadow: none !important;
            border-radius: var(--radius-md);
        }
        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2300e2ff' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M8 2a.75.75 0 0 1 .75.75v4.5h4.5a.75.75 0 0 1 0 1.5h-4.5v4.5a.75.75 0 0 1-1.5 0v-4.5h-4.5a.75.75 0 0 1 0-1.5h4.5v-4.5A.75.75 0 0 1 8 2Z'/%3E%3C/svg%3E");
            width: 1.1rem;
            height: 1.1rem;
            background-size: contain;
            transition: transform 0.25s ease;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2300e2ff' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M8 2a.75.75 0 0 1 .75.75v4.5h4.5a.75.75 0 0 1 0 1.5h-4.5v4.5a.75.75 0 0 1-1.5 0v-4.5h-4.5a.75.75 0 0 1 0-1.5h4.5v-4.5A.75.75 0 0 1 8 2Z'/%3E%3C/svg%3E");
        }
        .accordion-button:not(.collapsed) {
            color: var(--primary);
        }
        .accordion-body {
            padding: 5px 22px 20px;
            color: var(--text-2);
            font-size: 0.95rem;
            border-top: 1px solid rgba(120, 220, 255, 0.07);
        }

        .cta-section {
            background: linear-gradient(180deg, var(--bg-1), var(--bg-0));
            padding: 70px 0 90px;
        }
        .cta-panel {
            position: relative;
            border-radius: var(--radius-xl);
            padding: clamp(36px, 6vw, 70px) clamp(24px, 5vw, 72px);
            overflow: hidden;
            background: rgba(11, 29, 46, 0.8);
            text-align: center;
            border: 1px solid rgba(0, 226, 255, 0.18);
            box-shadow: var(--shadow-card);
            background-image: url("/assets/images/backpic/back-2.png");
            background-size: cover;
            background-position: center;
            isolation: isolate;
        }
        .cta-panel::before {
            content: "";
            position: absolute;
            inset: 0;
            backdrop-filter: blur(4px);
            background: rgba(3, 10, 18, 0.82);
            z-index: -1;
        }
        .cta-panel::after {
            content: "";
            position: absolute;
            inset: 0;
            z-index: -1;
            background: radial-gradient(ellipse at 50% 20%, rgba(0, 226, 255, 0.14), transparent 60%);
        }
        .cta-panel h2 {
            font-size: clamp(1.85rem, 3.6vw, 2.9rem);
            font-weight: 700;
            letter-spacing: 0.02em;
            margin: 0 0 14px;
        }
        .cta-panel p {
            color: var(--text-2);
            font-size: 1.02rem;
            max-width: 620px;
            margin: 0 auto 32px;
        }

        .site-footer {
            background: #030a12;
            position: relative;
            border-top: 1px solid rgba(120, 220, 255, 0.09);
        }
        .site-footer .footer-top {
            padding: 62px 0 40px;
        }
        .footer-brand .brand-logo {
            font-size: 1.55rem;
        }
        .footer-about {
            color: var(--text-3);
            font-size: 0.9rem;
            max-width: 350px;
            margin: 16px 0 0;
            line-height: 1.9;
        }
        .footer-categories h4,
        .footer-service h4 {
            color: var(--text-1);
            font-size: 0.92rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            margin-bottom: 18px;
            text-transform: uppercase;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-3);
            font-size: 0.92rem;
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(3px);
        }
        .footer-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }
        .footer-tag-cloud span {
            border: 1px solid var(--glass-border);
            background: rgba(120, 220, 255, 0.05);
            border-radius: 999px;
            padding: 5px 12px;
            font-size: 0.78rem;
            color: var(--text-3);
        }
        .footer-bottom {
            border-top: 1px solid rgba(120, 220, 255, 0.08);
            padding: 22px 0 30px;
            color: var(--text-3);
            font-size: 0.84rem;
        }
        .footer-bottom .domain-line {
            letter-spacing: 0.02em;
        }

        @media (max-width: 1199.99px) {
            .dock-nav {
                padding: 8px 12px;
            }
            .nav-items .nav-link {
                padding: 8px 11px;
                font-size: 0.88rem;
            }
            .nav-cta {
                padding: 8px 15px;
                font-size: 0.85rem;
            }
            .hero-glass-card {
                display: none;
            }
            .section-pad {
                padding: 78px 0;
            }
        }
        @media (max-width: 991.98px) {
            .dock-wrap {
                max-width: 100%;
            }
            .dock-nav {
                border-radius: 28px;
            }
            .navbar-collapse {
                margin-top: 12px;
                background: rgba(5, 17, 31, 0.96);
                border: 1px solid var(--glass-border);
                border-radius: 20px;
                padding: 12px;
            }
            .nav-items {
                align-items: stretch;
                gap: 4px;
                margin: 6px 0 14px;
            }
            .nav-items .nav-link {
                justify-content: flex-start;
                width: 100%;
                padding: 12px 16px;
            }
            .nav-items .nav-link.active::after {
                left: 18px;
                right: auto;
                transform: none;
            }
            .dock-actions {
                padding: 0 4px 4px;
            }
            .nav-cta {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .hero-section {
                min-height: 720px;
                padding: 110px 0 90px;
            }
            .step-track-line {
                display: none;
            }
            .play-steps {
                grid-template-columns: 1fr;
                max-width: 520px;
                margin-left: auto;
                margin-right: auto;
            }
            .step-card {
                text-align: left;
                display: grid;
                grid-template-columns: auto 1fr;
                gap: 0 20px;
                align-items: center;
                padding: 24px;
            }
            .step-badge {
                margin: 0;
                grid-row: span 2;
            }
            .step-card h3 {
                grid-column: 2;
                margin-bottom: 6px;
            }
            .step-card p {
                grid-column: 2;
            }
            .reward-wrap {
                grid-template-columns: 1fr;
            }
            .progress-points {
                grid-template-columns: 1fr 1fr;
            }
            .news-grid-wrap,
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .section-head {
                align-items: flex-start;
                flex-direction: column;
                gap: 12px;
            }
            .section-desc-end {
                margin-left: 0;
                max-width: none;
            }
        }
        @media (max-width: 767.98px) {
            html {
                font-size: 15px;
            }
            .section-pad {
                padding: 60px 0;
            }
            .site-header {
                padding-top: 10px;
            }
            .dock-nav {
                padding: 4px 10px;
            }
            .brand-logo {
                font-size: 1.12rem;
            }
            .brand-logo .brand-sub {
                font-size: 0.9rem;
            }
            .hero-title {
                font-size: 2.05rem;
                margin-bottom: 18px;
            }
            .hero-lead {
                font-size: 1.02rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                max-width: 300px;
            }
            .hero-actions .btn-glow-primary,
            .hero-actions .btn-glass {
                width: 100%;
            }
            .metrics-panel {
                flex-direction: column;
            }
            .metric-cell {
                border-right: 0;
                border-bottom: 1px solid rgba(120, 220, 255, 0.08);
            }
            .metric-cell:last-child {
                border-bottom: 0;
            }
            .news-grid-wrap {
                grid-template-columns: 1fr;
            }
            .news-feature-card .feature-cover img {
                height: 220px;
            }
            .news-mini-card {
                flex-direction: row;
                padding: 14px;
            }
            .mini-cover {
                width: 84px;
            }
            .reward-main-card .reward-image img {
                height: 210px;
            }
            .progress-points {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .progress-top {
                flex-wrap: wrap;
                gap: 10px;
            }
            .cta-section {
                padding: 50px 0 65px;
            }
            .cta-panel {
                padding: 30px 20px 36px;
            }
            .cta-panel p {
                font-size: 0.94rem;
            }
            .section-title {
                padding-left: 14px;
            }
        }
        @media (max-width: 575.98px) {
            .dock-wrap {
                padding: 0 12px;
            }
            .dock-nav {
                border-radius: 22px;
            }
            .step-card {
                display: block;
                text-align: center;
            }
            .step-badge {
                margin: 0 auto 20px;
            }
            .step-card h3,
            .step-card p {
                text-align: center;
            }
            .section-pad {
                padding: 52px 0;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .news-feature-card .feature-cover img {
                height: 180px;
            }
            .news-feature-body {
                padding: 20px 18px 22px;
            }
            .news-title {
                font-size: 1.05rem;
            }
            .news-mini-card {
                flex-wrap: wrap;
            }
            .mini-cover {
                width: 100%;
                height: 120px;
            }
            .news-mini-body {
                width: 100%;
            }
            .progress-panel {
                border-radius: var(--radius-md);
                padding: 22px 16px;
            }
            .progress-points {
                grid-template-columns: 1fr;
            }
            .hero-actions {
                max-width: none;
            }
            .footer-top {
                padding: 46px 0 24px;
            }
            .footer-service,
            .footer-categories {
                margin-top: 28px;
            }
            .footer-bottom {
                font-size: 0.77rem;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category1 */
:root {
            --bg-0: #050d18;
            --bg-1: #081526;
            --bg-2: #0c1f33;
            --glass-bg: rgba(13, 34, 56, 0.55);
            --glass-bg-strong: rgba(16, 40, 66, 0.75);
            --glass-border: rgba(120, 220, 255, 0.18);
            --primary: #00e2ff;
            --primary-2: #4c6cff;
            --accent: #ffb648;
            --text-1: #e8f2ff;
            --text-2: rgba(214, 230, 250, 0.72);
            --text-3: rgba(170, 195, 225, 0.45);
            --success: #2ee6a8;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-radius: 999px;
            --shadow-card: 0 12px 40px rgba(0, 10, 30, 0.25);
            --shadow-float: 0 18px 60px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(0, 226, 255, 0.1);
            --font-display: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            --font-serif: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", serif;
            --font-num: "DIN Alternate", "Roboto Mono", "JetBrains Mono", monospace;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-display);
            background-color: var(--bg-0);
            color: var(--text-1);
            line-height: 1.7;
            overflow-x: hidden;
        }

        img,
        svg {
            max-width: 100%;
            display: block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .3s ease;
        }

        button,
        input {
            font-family: inherit;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .site-header {
            position: relative;
            padding-top: 18px;
            z-index: 100;
        }

        .dock-wrap {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 12px;
        }

        .dock-nav {
            background: var(--glass-bg-strong);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-radius);
            padding: 8px 16px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
            transition: all .3s ease;
        }

        .dock-nav .navbar-toggler {
            border: 1px solid var(--glass-border);
            border-radius: 999px;
            padding: 4px 10px;
            color: var(--text-1);
            background: var(--glass-bg);
        }

        .dock-nav .navbar-toggler:focus {
            box-shadow: none;
        }

        .brand-logo {
            display: inline-flex;
            align-items: baseline;
            gap: 4px;
            white-space: nowrap;
        }

        .brand-main {
            font-size: 1.35rem;
            font-weight: 700;
            color: #dbffff;
            letter-spacing: .02em;
        }

        .brand-sub {
            font-size: 1rem;
            color: var(--text-2);
            font-weight: 400;
            letter-spacing: .06em;
        }

        .nav-items .nav-link {
            color: var(--text-2);
            font-size: .95rem;
            padding: 8px 18px;
            border-radius: 999px;
            transition: all .25s ease;
            text-align: center;
            white-space: nowrap;
        }

        .nav-items .nav-link:hover {
            color: var(--primary);
            box-shadow: inset 0 -2px 0 var(--primary);
        }

        .nav-items .nav-link.active {
            color: #f0feff;
            background: rgba(0, 226, 255, 0.12);
            box-shadow: inset 0 0 0 1px rgba(0, 226, 255, 0.2);
        }

        .btn-glow-primary {
            display: inline-block;
            padding: 8px 22px;
            background: linear-gradient(135deg, #00e2ff, #4c6cff);
            color: #001022;
            border-radius: 999px;
            border: none;
            font-weight: 600;
            font-size: .95rem;
            line-height: 1.4;
            box-shadow: 0 0 16px rgba(0, 226, 255, 0.25);
            transition: all .3s ease;
            text-align: center;
            white-space: nowrap;
        }

        .btn-glow-primary:hover {
            color: #001022;
            box-shadow: 0 0 32px rgba(0, 226, 255, 0.5);
            transform: translateY(-2px);
        }

        .btn-glass {
            display: inline-block;
            padding: 12px 26px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            color: var(--text-1);
            border-radius: 999px;
            font-weight: 500;
            transition: all .3s ease;
            text-align: center;
        }

        .btn-glass:hover {
            border-color: rgba(0, 226, 255, 0.6);
            color: var(--primary);
            box-shadow: 0 0 20px rgba(0, 226, 255, 0.15);
        }

        .container-xxl {
            max-width: 1340px;
            width: 100%;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .page-category-hero {
            position: relative;
            padding: 70px 0 64px;
            overflow: hidden;
            background: var(--bg-1);
            border-bottom: 1px solid rgba(0, 226, 255, 0.1);
        }

        .page-category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-position: center 20%;
            background-size: cover;
            opacity: 0.27;
            z-index: 0;
        }

        .page-category-hero::after {
            content: "";
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            background: radial-gradient(circle at 15% 20%, rgba(0, 226, 255, 0.14), transparent 36%), radial-gradient(circle at 90% 80%, rgba(76, 108, 255, 0.14), transparent 38%);
            z-index: 0;
        }

        .category-hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .breadcrumb-slim {
            display: flex;
            flex-wrap: wrap;
            font-size: .86rem;
            color: var(--text-3);
            gap: 8px;
            list-style: none;
            padding: 0;
            align-items: center;
        }

        .breadcrumb-slim li + li::before {
            content: "/";
            margin-right: 8px;
            color: rgba(170, 195, 225, 0.3);
        }

        .breadcrumb-slim a {
            color: var(--text-2);
        }

        .breadcrumb-slim .active-final {
            color: var(--text-1);
        }

        .category-title-group h1 {
            font-size: clamp(2.2rem, 4vw, 3.4rem);
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.2;
            margin-bottom: 16px;
            background: linear-gradient(120deg, #ffffff 0%, #d7f5ff 50%, #7fd9ff 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .category-title-group .hero-description {
            font-size: 1.12rem;
            color: var(--text-2);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .mini-tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 10px;
        }

        .mini-tag {
            display: inline-block;
            padding: 6px 18px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 999px;
            font-size: .85rem;
            color: var(--text-2);
        }

        .anchor-capsule-bar {
            margin-top: 36px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .anchor-capsule {
            padding: 8px 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            color: var(--text-2);
            border-radius: 999px;
            font-size: .9rem;
            line-height: 1.5;
            transition: all .25s ease;
        }

        .anchor-capsule:hover {
            color: var(--primary);
            border-color: rgba(0, 226, 255, 0.4);
            transform: translateY(-1px);
        }

        .category-main-section {
            padding: 70px 0;
            background: var(--bg-0);
            position: relative;
        }

        .category-main-section--tint {
            background: var(--bg-1);
        }

        .section-heading h2 {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            font-weight: 700;
            margin-bottom: 10px;
            position: relative;
            padding-left: 18px;
        }

        .section-heading h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 6px;
            border-radius: 999px;
            background: linear-gradient(180deg, var(--primary), var(--primary-2));
            box-shadow: 0 0 12px rgba(0, 226, 255, 0.4);
        }

        .section-heading .section-subtitle {
            color: var(--text-2);
            margin-bottom: 36px;
            font-size: 1rem;
            line-height: 1.7;
            max-width: 860px;
        }

        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }

        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 226, 255, 0.5);
            box-shadow: 0 18px 60px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(0, 226, 255, 0.12);
        }

        .glass-card .card-highlight {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
        }

        .step-tile {
            height: 100%;
            padding: 32px 24px;
            display: flex;
            flex-direction: column;
        }

        .step-num {
            font-family: var(--font-num);
            font-size: 1.4rem;
            color: var(--primary);
            letter-spacing: .04em;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .step-num .step-line {
            flex: 1;
            height: 1px;
            background: linear-gradient(90deg, rgba(0, 226, 255, 0.15), transparent);
        }

        .tile-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 18px;
        }

        .step-tile h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: #fff;
        }

        .step-tile p {
            color: var(--text-2);
            font-size: .95rem;
            line-height: 1.75;
            margin-bottom: 0;
        }

        .visual-cover-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 280px;
            height: 100%;
        }

        .visual-cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.8s ease;
        }

        .glass-card:hover .visual-cover-wrap img {
            transform: scale(1.02);
        }

        .content-row {
            margin-bottom: 70px;
        }

        .content-row:last-child {
            margin-bottom: 0;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .feature-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--text-2);
            font-size: .98rem;
            line-height: 1.7;
        }

        .feature-list li i {
            color: var(--primary);
            font-size: 1.1rem;
            margin-top: 3px;
            opacity: .9;
        }

        .feature-title {
            font-size: 1.15rem;
            font-weight: 600;
            color: #eafdff;
            margin-bottom: 18px;
            padding-bottom: 12px;
            position: relative;
        }

        .feature-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 42px;
            height: 2px;
            background: var(--primary);
            box-shadow: 0 0 8px var(--primary);
        }

        .visual-accent-card {
            background: rgba(0, 226, 255, 0.02);
            border: 1px solid rgba(0, 226, 255, 0.09);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 16px;
        }

        .stat-square {
            padding: 18px 20px;
            background: var(--bg-2);
            border-radius: 16px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .stat-square strong {
            font-family: var(--font-num);
            font-size: 1.6rem;
            font-weight: 600;
            color: var(--primary);
        }

        .stat-square span {
            color: var(--text-3);
            font-size: .82rem;
        }

        .notice-panel {
            border-left: 4px solid var(--primary);
            background: rgba(0, 226, 255, 0.05);
            border-radius: 0 18px 18px 0;
            padding: 24px 26px;
            margin-top: 30px;
            position: relative;
        }

        .notice-panel h4 {
            color: #cfeeff;
            font-size: 1.05rem;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .notice-panel p {
            color: var(--text-2);
            font-size: .95rem;
            margin: 0;
            line-height: 1.8;
        }

        .scene-card {
            height: 100%;
            padding: 28px 24px;
        }

        .scene-card .scene-icon {
            width: 56px;
            height: 56px;
            margin-bottom: 20px;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(120, 220, 255, 0.14);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.7rem;
            color: var(--accent);
        }

        .scene-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: #ffffff;
        }

        .scene-card p {
            color: var(--text-2);
            font-size: .93rem;
            line-height: 1.75;
            margin: 0;
        }

        .accent-chip {
            display: inline-block;
            background: rgba(255, 182, 72, 0.1);
            border: 1px solid rgba(255, 182, 72, 0.16);
            color: #ffd294;
            border-radius: 999px;
            padding: 4px 12px;
            font-size: .78rem;
        }

        .faq-wrap {
            margin-top: 20px;
        }

        .faq-item {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 16px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 22px 24px;
            cursor: pointer;
            background: transparent;
            color: var(--text-1);
            font-weight: 500;
            font-size: 1.01rem;
            position: relative;
        }

        .faq-question i {
            font-size: 1.2rem;
            color: var(--primary);
            transition: transform .3s;
        }

        .faq-item[open] .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px 22px;
            color: var(--text-2);
            line-height: 1.9;
            font-size: .95rem;
            border-top: 1px solid rgba(120, 220, 255, 0.08);
            margin-top: 0;
        }

        details.faq-item {
            list-style: none;
        }

        details.faq-item summary {
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }

        details.faq-item summary::-webkit-details-marker {
            display: none;
        }

        .cta-band {
            background: linear-gradient(115deg, rgba(0, 226, 255, 0.12), rgba(76, 108, 255, 0.12));
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            border: 1px solid rgba(0, 226, 255, 0.15);
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: "";
            position: absolute;
            width: 400px;
            height: 400px;
            right: -160px;
            top: -160px;
            background: radial-gradient(circle, var(--primary), transparent 65%);
            opacity: 0.12;
        }

        .cta-band h2 {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            margin-bottom: 12px;
            color: #fff;
        }

        .cta-band p {
            color: var(--text-2);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1rem;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .site-footer {
            background: var(--bg-0);
            border-top: 1px solid rgba(0, 226, 255, 0.08);
        }

        .footer-top {
            padding: 56px 0 40px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 20px;
        }

        .footer-brand .footer-about {
            color: var(--text-2);
            font-size: .94rem;
            max-width: 440px;
            line-height: 1.8;
            margin-top: 16px;
        }

        .footer-tag-cloud {
            margin-top: 18px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-tag-cloud span {
            display: inline-block;
            padding: 5px 12px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 999px;
            font-size: .8rem;
            color: var(--text-3);
        }

        .footer-categories h4,
        .footer-service h4 {
            color: #dffaff;
            font-size: 1.05rem;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: var(--text-2);
            font-size: .9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all .25s;
        }

        .footer-links a:hover {
            color: var(--primary);
            letter-spacing: 0.02em;
        }

        .footer-footer {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 28px 0 32px;
        }

        .footer-inner-low {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            color: var(--text-3);
            font-size: .82rem;
            line-height: 1.6;
        }

        .footer-inner-low .copyright,
        .footer-inner-low .domain-line {
            color: var(--text-3);
        }

        @media (max-width: 991.98px) {
            .dock-wrap {
                padding: 0 8px;
            }
            .dock-nav {
                border-radius: 24px;
            }
            .nav-items {
                padding: 12px 0;
            }
            .nav-items .nav-link {
                text-align: left;
                padding: 8px 16px;
            }
            .nav-items .nav-link.active {
                background: rgba(0, 226, 255, 0.08);
                box-shadow: none;
                border-radius: 16px;
            }
            .dock-actions {
                padding-bottom: 10px;
            }
            .page-category-hero {
                padding: 45px 0 40px;
            }
            .category-title-group h1 {
                font-size: 2.2rem;
            }
            .cta-band {
                padding: 40px 24px;
            }
        }

        @media (max-width: 767.98px) {
            .category-main-section {
                padding: 50px 0;
            }
            .category-title-group h1 {
                font-size: 1.9rem;
            }
            .visual-cover-wrap {
                min-height: 220px;
            }
            .step-tile {
                padding: 24px 18px;
            }
            .breadcrumb-slim {
                font-size: .8rem;
            }
            .content-row {
                margin-bottom: 45px;
            }
            .cta-band h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 575.98px) {
            html {
                font-size: 15px;
            }
            .container-xxl {
                padding-left: 16px;
                padding-right: 16px;
            }
            .glass-card,
            .scene-card,
            .step-tile {
                border-radius: var(--radius-md);
            }
            .footer-top {
                padding: 36px 0 24px;
            }
            .footer-inner-low {
                flex-direction: column;
            }
            .page-category-hero {
                padding: 36px 0 30px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

        .category-cover-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 16px 56px rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(0, 226, 255, 0.12);
        }

        .category-cover-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .quote-panel {
            padding: 28px 30px;
            border-radius: 20px;
        }

        .quote-panel .quote-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 12px;
            opacity: .7;
        }

        .quote-panel p {
            font-family: var(--font-serif);
            font-size: 1.02rem;
            color: var(--text-1);
            line-height: 1.9;
        }

/* roulang page: article */
/* ============ Design Tokens ============ */
        :root {
            --bg-0: #050d18;
            --bg-1: #081526;
            --bg-2: #0c1f33;
            --glass-bg: rgba(13, 34, 56, 0.55);
            --glass-bg-strong: rgba(16, 40, 66, 0.75);
            --glass-border: rgba(120, 220, 255, 0.18);
            --primary: #00e2ff;
            --primary-2: #4c6cff;
            --accent: #ffb648;
            --text-1: #e8f2ff;
            --text-2: rgba(214, 230, 250, 0.72);
            --text-3: rgba(170, 195, 225, 0.45);
            --success: #2ee6a8;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 12px 40px rgba(0, 10, 30, 0.25);
            --shadow-lift: 0 18px 60px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(0, 226, 255, 0.08);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            --font-serif: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", serif;
            --font-num: "DIN Alternate", "Roboto Mono", "JetBrains Mono", monospace;
        }

        /* ============ Base Reset ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-cn);
            background: var(--bg-0);
            color: var(--text-1);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background:
                radial-gradient(ellipse at 72% 18%, rgba(76, 108, 255, 0.16), transparent 46%),
                radial-gradient(ellipse at 12% 42%, rgba(0, 226, 255, 0.07), transparent 38%),
                linear-gradient(180deg, rgba(5, 13, 24, 0) 0, #050d18 100%);
            z-index: -1;
            pointer-events: none;
        }
        body::after {
            content: "";
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(120, 220, 255, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(120, 220, 255, 0.035) 1px, transparent 1px);
            background-size: 88px 88px;
            mask-image: radial-gradient(ellipse at center, transparent 22%, #000 100%);
            -webkit-mask-image: radial-gradient(ellipse at center, transparent 22%, #000 100%);
            opacity: .44;
            pointer-events: none;
            z-index: -1;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .25s ease;
        }
        a:hover {
            color: #fff;
        }
        img {
            max-width: 100%;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5 {
            color: var(--text-1);
            font-weight: 700;
            letter-spacing: .01em;
        }
        .container-xxl {
            max-width: 1320px;
        }

        /* ============ Bootstrap Overrides ============ */
        .navbar {
            --bs-navbar-toggler-focus-width: 0;
        }
        .navbar-toggler {
            border: 1px solid rgba(120, 220, 255, .24);
            border-radius: 999px;
            color: var(--text-1);
            padding: .2rem .55rem;
            background: rgba(0, 226, 255, .08);
            box-shadow: none;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px rgba(0, 226, 255, .55);
        }
        .row {
            --bs-gutter-y: 1.5rem;
        }

        /* ============ Button System ============ */
        .btn-glow-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .3rem;
            background: linear-gradient(135deg, #00e2ff, #4c6cff);
            color: #001022;
            border: 0;
            font-weight: 700;
            font-size: .95rem;
            padding: .62rem 1.4rem;
            border-radius: var(--radius-pill);
            box-shadow: 0 0 16px rgba(0, 226, 255, .18);
            transition: box-shadow .3s ease, transform .3s ease, color .3s ease;
            white-space: nowrap;
            line-height: 1.4;
        }
        .btn-glow-primary:hover {
            color: #001022;
            box-shadow: 0 0 30px rgba(0, 226, 255, .45);
            transform: translateY(-2px);
        }
        .btn-glow-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 2px var(--primary), 0 0 24px rgba(0, 226, 255, .5);
        }
        .btn-glass {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .4rem;
            background: rgba(0, 226, 255, .07);
            border: 1px solid var(--glass-border);
            color: var(--text-1);
            padding: .62rem 1.4rem;
            border-radius: var(--radius-pill);
            transition: background .3s ease, border-color .3s ease, color .3s ease, transform .3s ease;
            font-weight: 500;
        }
        .btn-glass:hover {
            background: rgba(0, 226, 255, .16);
            border-color: rgba(0, 226, 255, .5);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-glass:focus-visible {
            outline: none;
            box-shadow: 0 0 0 2px var(--primary);
        }
        .text-arrow-link {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            color: var(--primary);
            font-weight: 500;
            font-size: .95rem;
            transition: gap .3s ease;
        }
        .text-arrow-link:hover {
            color: #fff;
            gap: .55rem;
        }
        .text-arrow-link i {
            transition: transform .3s ease;
        }

        /* ============ Dock Navigation ============ */
        .dock-wrap {
            padding: 18px 20px 0;
            position: sticky;
            top: -1px;
            z-index: 1080;
        }
        .dock-nav {
            max-width: 1200px;
            margin: 0 auto;
            border-radius: 999px;
            background: rgba(16, 40, 66, .78);
            border: 1px solid var(--glass-border);
            box-shadow: 0 12px 40px rgba(0, 0, 0, .3);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            padding: .45rem .7rem;
            transition: background .35s ease, box-shadow .35s ease;
        }
        .dock-nav.scrolled {
            background: rgba(12, 30, 52, .92);
            box-shadow: 0 16px 50px rgba(0, 0, 0, .45);
        }
        .brand-logo {
            display: inline-flex;
            align-items: baseline;
            gap: .15rem;
            line-height: 1.2;
        }
        .brand-main {
            font-size: 1.3rem;
            font-weight: 800;
            color: #dff6ff;
            letter-spacing: .02em;
        }
        .brand-sub {
            font-size: .95rem;
            font-weight: 400;
            color: rgba(170, 210, 240, .7);
        }
        .nav-items .nav-link {
            color: var(--text-2);
            font-size: .94rem;
            border-radius: 999px;
            padding: .48rem 1rem;
            transition: background .3s ease, color .3s ease;
            position: relative;
        }
        .nav-items .nav-link:hover {
            color: var(--primary);
            background: rgba(0, 226, 255, .08);
        }
        .nav-items .nav-link.active {
            color: var(--primary);
            background: rgba(0, 226, 255, .12);
            font-weight: 600;
        }
        .nav-items .nav-link.active::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 2px;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 4px;
            box-shadow: 0 0 8px rgba(0, 226, 255, .8);
        }
        .dock-actions .nav-cta {
            font-size: .88rem;
            padding: .5rem 1.15rem;
        }

        /* ============ Hero Article Header ============ */
        .article-hero {
            position: relative;
            overflow: hidden;
            padding: 4rem 0 3rem;
            background:
                radial-gradient(ellipse at 16% 10%, rgba(0, 226, 255, .14), transparent 40%),
                radial-gradient(ellipse at 88% 22%, rgba(76, 108, 255, .18), transparent 44%),
                linear-gradient(180deg, rgba(8, 21, 38, .55), rgba(5, 13, 24, .8)),
                url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            border-bottom: 1px solid rgba(120, 220, 255, .1);
        }
        .article-hero::before {
            content: "";
            position: absolute;
            left: 8%;
            right: 8%;
            top: 20%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 226, 255, .23), transparent);
            pointer-events: none;
        }
        .article-hero-inner {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            list-style: none;
            margin: 0 0 1rem;
            padding: 0;
            font-size: .82rem;
            color: var(--text-3);
            gap: .25rem;
        }
        .breadcrumb-custom li {
            display: inline-flex;
            align-items: center;
        }
        .breadcrumb-custom a {
            color: var(--text-2);
            transition: color .25s ease;
        }
        .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .breadcrumb-custom .bc-sep {
            opacity: .4;
            padding: 0 .2rem;
            color: var(--text-3);
        }
        .article-cat-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(0, 226, 255, .1);
            border: 1px solid rgba(0, 226, 255, .25);
            color: #b8efff;
            padding: .18rem .85rem;
            border-radius: 999px;
            font-size: .82rem;
            margin-bottom: .8rem;
            backdrop-filter: blur(8px);
        }
        .article-title {
            color: #f2f9ff;
            font-size: clamp(1.8rem, 4vw, 3rem);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: .01em;
            margin-bottom: .75rem;
            text-shadow: 0 0 30px rgba(0, 226, 255, .25);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            font-size: .86rem;
            color: var(--text-3);
            border-top: 1px solid rgba(120, 220, 255, .12);
            padding-top: .85rem;
        }
        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
        }
        .article-meta .meta-brand {
            color: rgba(0, 226, 255, .8);
        }
        .article-meta .meta-sep {
            opacity: .18;
        }

        /* ============ Cover Image ============ */
        .article-cover-section {
            padding: 2.4rem 0 .5rem;
            position: relative;
        }
        .article-cover-figure {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid rgba(0, 226, 255, .32);
            box-shadow: 0 24px 80px rgba(0, 0, 0, .45), 0 0 0 1px rgba(0, 226, 255, .07);
        }
        .article-cover-figure::after {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            background: linear-gradient(160deg, rgba(0, 226, 255, .12), transparent 42%),
                linear-gradient(20deg, rgba(76, 108, 255, .18), transparent 52%);
            mix-blend-mode: screen;
        }
        .article-cover-figure img {
            width: 100%;
            height: clamp(320px, 42vw, 520px);
            object-fit: cover;
            display: block;
        }
        .cover-caption {
            position: absolute;
            left: 1.2rem;
            bottom: 1rem;
            background: rgba(5, 13, 24, .62);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(120, 220, 255, .14);
            padding: .2rem .8rem;
            border-radius: 999px;
            color: var(--text-2);
            font-size: .78rem;
            z-index: 2;
        }

        /* ============ Article Body ============ */
        .article-body-wrap {
            max-width: 800px;
            margin: 0 auto;
            padding: 1.2rem 0 2.5rem;
        }
        .cms-article-body {
            font-family: var(--font-serif);
            font-size: 1.07rem;
            line-height: 1.95;
            color: var(--text-2);
            word-break: break-word;
        }
        .cms-article-body p {
            margin: 0 0 1.65em;
        }
        .cms-article-body h2 {
            font-family: var(--font-cn);
            font-size: 1.6rem;
            margin: 2.2em 0 .8em;
            font-weight: 800;
            color: var(--text-1);
            position: relative;
            padding-left: 1.1rem;
            border-left: 4px solid var(--primary);
            border-radius: 0 6px 6px 0;
            line-height: 1.4;
        }
        .cms-article-body h3 {
            font-family: var(--font-cn);
            font-size: 1.28rem;
            font-weight: 700;
            margin: 1.9em 0 .75em;
            background: rgba(0, 226, 255, .07);
            border: 1px solid rgba(0, 226, 255, .12);
            padding: .35rem .9rem;
            border-radius: 999px;
            display: inline-block;
        }
        .cms-article-body h4 {
            font-family: var(--font-cn);
            font-size: 1.11rem;
            margin: 1.6em 0 .6em;
            font-weight: 700;
            color: #bfeaff;
        }
        .cms-article-body ul,
        .cms-article-body ol {
            padding-left: 1.4rem;
            margin: 0 0 1.6em;
        }
        .cms-article-body li {
            margin-bottom: .35rem;
            position: relative;
        }
        .cms-article-body ul {
            list-style: none;
            padding-left: .2rem;
        }
        .cms-article-body ul>li {
            padding-left: 1.4rem;
            position: relative;
        }
        .cms-article-body ul>li::before {
            content: "";
            position: absolute;
            left: .3rem;
            top: .62em;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 10px rgba(0, 226, 255, .7);
        }
        .cms-article-body ol {
            counter-reset: cnt;
            padding-left: 0;
        }
        .cms-article-body ol>li {
            counter-increment: cnt;
            padding-left: 2rem;
            position: relative;
        }
        .cms-article-body ol>li::before {
            content: counter(cnt, decimal-leading-zero);
            position: absolute;
            left: 0;
            top: .16em;
            font-family: var(--font-num);
            color: var(--primary);
            font-size: .85rem;
            font-weight: 700;
            letter-spacing: .04em;
        }
        .cms-article-body img {
            border-radius: 16px;
            margin: 1.2rem 0;
            border: 1px solid rgba(120, 220, 255, .18);
            box-shadow: var(--shadow-card);
        }
        .cms-article-body blockquote {
            background: rgba(13, 34, 56, .5);
            border-left: 4px solid var(--primary);
            padding: 1.4rem 1.6rem;
            border-radius: 0 16px 16px 0;
            margin: 1.6rem 0;
            color: var(--text-2);
            box-shadow: inset 0 0 30px rgba(0, 0, 0, .2);
            font-size: 1.02rem;
        }
        .cms-article-body blockquote p:last-child {
            margin-bottom: 0;
        }
        .cms-article-body a {
            border-bottom: 1px solid rgba(0, 226, 255, .4);
        }
        .cms-article-body a:hover {
            border-bottom-color: #fff;
        }
        .cms-article-body pre {
            background: #071122;
            border: 1px solid rgba(120, 220, 255, .14);
            padding: 1rem 1.2rem;
            border-radius: 14px;
            overflow-x: auto;
            font-size: .9rem;
            color: #cbe7ff;
        }
        .cms-article-body code {
            background: rgba(0, 226, 255, .09);
            color: #a1f1ff;
            border-radius: 6px;
            padding: .1rem .35rem;
            font-size: .9em;
        }
        .cms-article-body pre code {
            background: none;
            color: inherit;
            padding: 0;
        }

        /* ============ Article Footer Tags ============ */
        .article-tags-row {
            border-top: 1px solid rgba(120, 220, 255, .12);
            border-bottom: 1px solid rgba(120, 220, 255, .12);
            padding: 1.1rem 0;
            margin: 1.8rem 0 2.2rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .45rem;
        }
        .article-tags-row .tags-label {
            color: var(--text-3);
            font-size: .82rem;
            margin-right: .2rem;
        }
        .article-tag {
            background: rgba(0, 226, 255, .06);
            border: 1px solid rgba(120, 220, 255, .16);
            border-radius: 999px;
            padding: .2rem .8rem;
            font-size: .79rem;
            color: var(--text-2);
            transition: background .3s ease, border-color .3s ease, color .3s ease;
        }
        .article-tag:hover {
            background: rgba(0, 226, 255, .14);
            border-color: rgba(0, 226, 255, .45);
            color: #fff;
        }

        /* ============ Post Card Navigation ============ */
        .post-nav-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            margin-bottom: 2rem;
        }
        .post-nav-card {
            display: flex;
            align-items: center;
            gap: .9rem;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 18px;
            padding: .95rem 1.2rem;
            transition: transform .3s ease, background .3s ease, border-color .3s ease;
            backdrop-filter: blur(14px);
            color: var(--text-1);
            min-height: 78px;
        }
        .post-nav-card:hover {
            transform: translateY(-3px);
            border-color: rgba(0, 226, 255, .5);
            background: rgba(0, 226, 255, .07);
            color: #fff;
        }
        .post-nav-card .nav-icon {
            width: 38px;
            height: 38px;
            flex: 0 0 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(0, 226, 255, .18), rgba(76, 108, 255, .18));
            border: 1px solid rgba(0, 226, 255, .28);
            color: var(--primary);
            font-size: 1rem;
        }
        .post-nav-card .nav-arrow-next {
            order: 2;
        }
        .post-nav-card .nav-text {
            display: block;
            overflow: hidden;
        }
        .post-nav-card .nav-kicker {
            display: block;
            font-size: .74rem;
            color: var(--text-3);
            letter-spacing: .04em;
            margin-bottom: .2rem;
        }
        .post-nav-card .nav-main {
            display: block;
            font-size: .95rem;
            font-weight: 600;
            color: var(--text-1);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .post-nav-card.text-end {
            flex-direction: row-reverse;
        }
        .post-nav-card.text-end .nav-icon {
            order: 2;
        }
        .post-nav-card.text-end .nav-text {
            text-align: right;
        }

        /* ============ Related Cards ============ */
        .related-section {
            padding: 3.8rem 0;
            position: relative;
        }
        .section-heading {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 2.2rem;
        }
        .section-heading h2 {
            font-size: clamp(1.6rem, 2.6vw, 2.2rem);
            font-weight: 800;
            margin: 0;
            position: relative;
            padding-left: 1rem;
        }
        .section-heading h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: .12em;
            width: 5px;
            border-radius: 3px;
            height: .85em;
            background: linear-gradient(180deg, var(--primary), var(--primary-2));
            box-shadow: 0 0 12px rgba(0, 226, 255, .7);
        }
        .section-heading .section-desc {
            color: var(--text-3);
            font-size: .9rem;
        }
        .related-card {
            display: flex;
            height: 100%;
            background: linear-gradient(145deg, rgba(12, 31, 51, .72), rgba(7, 19, 33, .55));
            border: 1px solid rgba(120, 220, 255, .14);
            border-radius: 20px;
            overflow: hidden;
            color: var(--text-2);
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
            backdrop-filter: blur(10px);
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-5px);
            border-color: rgba(0, 226, 255, .48);
            box-shadow: var(--shadow-lift);
            color: var(--text-2);
        }
        .related-card .rc-media {
            aspect-ratio: 1.65;
            overflow: hidden;
            position: relative;
        }
        .related-card .rc-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .55s ease;
        }
        .related-card:hover .rc-media img {
            transform: scale(1.045);
        }
        .related-card .rc-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(5, 13, 24, .6));
        }
        .related-card .rc-body {
            padding: 1.1rem 1.25rem 1.3rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .related-card .rc-title {
            color: var(--text-1);
            font-size: 1.02rem;
            font-weight: 700;
            margin: 0 0 .4rem;
        }
        .related-card .rc-desc {
            font-size: .86rem;
            line-height: 1.6;
            color: var(--text-3);
            margin-bottom: 1rem;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .related-card .rc-link {
            margin-top: auto;
            color: var(--primary);
            font-size: .88rem;
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            transition: gap .3s ease;
        }
        .related-card:hover .rc-link {
            gap: .55rem;
        }

        /* ============ Bottom CTA ============ */
        .article-cta-section {
            padding: 0 0 2rem;
        }
        .cta-glass-panel {
            position: relative;
            background:
                radial-gradient(ellipse at 88% 0, rgba(0, 226, 255, .12), transparent 45%),
                radial-gradient(ellipse at 5% 100%, rgba(76, 108, 255, .1), transparent 50%),
                rgba(13, 34, 56, .45);
            border: 1px solid rgba(120, 220, 255, .22);
            border-radius: 24px;
            padding: 3rem 1.8rem;
            text-align: center;
            overflow: hidden;
            backdrop-filter: blur(12px);
        }
        .cta-glass-panel::before {
            content: "";
            position: absolute;
            top: 0;
            left: 18%;
            right: 18%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 226, 255, .55), transparent);
        }
        .cta-glass-panel h2 {
            font-size: clamp(1.35rem, 2.6vw, 2rem);
            font-weight: 800;
            margin: 0 0 .6rem;
        }
        .cta-glass-panel p {
            color: var(--text-2);
            margin-bottom: 1.6rem;
            font-size: .95rem;
        }
        .cta-glass-panel .cta-actions {
            display: flex;
            justify-content: center;
            gap: .8rem;
            flex-wrap: wrap;
        }

        /* ============ Not Found State ============ */
        .not-found-section {
            padding: 6rem 0 2rem;
        }
        .not-found-panel {
            max-width: 660px;
            margin: 0 auto;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 24px;
            text-align: center;
            padding: 3.8rem 2rem;
            position: relative;
        }
        .not-found-icon {
            width: 70px;
            height: 70px;
            line-height: 70px;
            border-radius: 22px;
            background: linear-gradient(135deg, rgba(0, 226, 255, .16), rgba(76, 108, 255, .12));
            border: 1px solid rgba(0, 226, 255, .35);
            margin: 0 auto 1.2rem;
            color: var(--primary);
            font-size: 2rem;
        }
        .not-found-panel h2 {
            font-size: 1.35rem;
            color: var(--text-1);
            margin-bottom: .5rem;
        }
        .not-found-panel p {
            color: var(--text-3);
            margin-bottom: 1.5rem;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: linear-gradient(180deg, #050d18, #030910);
            border-top: 1px solid rgba(120, 220, 255, .08);
            padding-top: 3.6rem;
            position: relative;
        }
        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 70%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 226, 255, .35), transparent);
        }
        .footer-brand {
            margin-bottom: 1rem;
        }
        .footer-about {
            font-size: .92rem;
            color: var(--text-3);
            margin: 1rem 0 1.1rem;
            max-width: 430px;
            line-height: 1.8;
        }
        .footer-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: .4rem;
        }
        .footer-tag-cloud span {
            border-radius: 999px;
            background: rgba(0, 226, 255, .07);
            border: 1px solid rgba(120, 220, 255, .13);
            color: var(--text-3);
            font-size: .76rem;
            padding: .18rem .62rem;
        }
        .footer-categories h4,
        .footer-service h4 {
            font-size: .98rem;
            font-weight: 700;
            color: #d8edff;
            margin-bottom: 1rem;
            position: relative;
            padding-bottom: .6rem;
        }
        .footer-categories h4::after,
        .footer-service h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 26px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 226, 255, .5);
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: .55rem;
        }
        .footer-links a {
            color: var(--text-2);
            font-size: .88rem;
            display: inline-flex;
            align-items: center;
            gap: .2rem;
            transition: color .25s ease, padding-left .25s ease;
        }
        .footer-links a i {
            font-size: .72rem;
            color: var(--text-3);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: .35rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(120, 220, 255, .08);
            padding: 1.4rem 0 1.5rem;
            margin-top: 2.4rem;
        }
        .footer-bottom .fb-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: .6rem;
            align-items: center;
        }
        .footer-bottom .copyright {
            font-size: .84rem;
            color: var(--text-3);
        }
        .footer-bottom .copyright a {
            color: var(--text-2);
        }
        .footer-bottom .copyright a:hover {
            color: var(--primary);
        }
        .footer-bottom .tech-line {
            font-size: .78rem;
            color: rgba(170, 195, 225, .34);
        }

        /* ============ Scoped Fade Up ============ */
        .fade-up {
            opacity: 0;
            transform: translateY(14px);
            transition: opacity .6s ease, transform .6s ease;
        }
        .fade-up.show {
            opacity: 1;
            transform: none;
        }

        /* ============ Responsive ============ */
        @media (max-width: 991.98px) {
            .dock-nav {
                border-radius: 24px;
            }
            .navbar-collapse {
                background: rgba(8, 21, 38, .97);
                border: 1px solid rgba(120, 220, 255, .16);
                border-radius: 20px;
                padding: 1rem;
                margin-top: .6rem;
                box-shadow: 0 20px 60px rgba(0, 0, 0, .4);
            }
            .nav-items .nav-link.active::after {
                display: none;
            }
            .dock-actions {
                padding-top: .5rem;
            }
            .article-hero {
                padding-top: 3rem;
            }
            .post-nav-row {
                grid-template-columns: 1fr;
            }
            .related-section {
                padding: 3rem 0;
            }
        }
        @media (max-width: 767.98px) {
            body {
                line-height: 1.65;
            }
            .brand-main {
                font-size: 1.15rem;
            }
            .article-cover-figure img {
                height: min(240px, 50vw);
            }
            .article-body-wrap {
                padding: 0 0 2rem;
            }
            .cms-article-body {
                font-size: 1rem;
            }
            .section-heading {
                flex-direction: column;
                align-items: flex-start;
                gap: .45rem;
            }
            .post-nav-card {
                padding: .75rem 1rem;
                min-height: 68px;
            }
        }
        @media (max-width: 575.98px) {
            .dock-wrap {
                padding: 12px 12px 0;
            }
            .dock-nav {
                padding: .35rem .4rem;
            }
            .article-hero {
                padding: 2.2rem 0 1.8rem;
            }
            .article-title {
                font-size: 1.55rem;
            }
            .article-meta {
                gap: .8rem;
            }
            .cta-glass-panel {
                padding: 2rem 1rem;
                border-radius: 16px;
            }
            .post-nav-card .nav-main {
                font-size: .87rem;
            }
            .footer-bottom .fb-inner {
                flex-direction: column;
            }
        }

        /* ============ Reduced Motion ============ */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                transition-duration: .01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category3 */
:root {
            --bg-0: #050d18;
            --bg-1: #081526;
            --bg-2: #0c1f33;
            --glass-bg: rgba(13, 34, 56, 0.55);
            --glass-bg-strong: rgba(16, 40, 66, 0.82);
            --glass-border: rgba(120, 220, 255, 0.18);
            --primary: #00e2ff;
            --primary-2: #4c6cff;
            --accent: #ffb648;
            --text-1: #e8f2ff;
            --text-2: rgba(214, 230, 250, 0.78);
            --text-3: rgba(170, 195, 225, 0.5);
            --success: #2ee6a8;
            --radius-card: 24px;
            --radius-item: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 12px 40px rgba(0, 10, 30, 0.25);
            --shadow-lift: 0 18px 60px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(0, 226, 255, 0.1);
            --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-0);
            color: var(--text-1);
            line-height: 1.6;
            overflow-x: hidden;
            position: relative;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            z-index: -2;
            background:
                radial-gradient(ellipse at 20% 90%, rgba(0, 226, 255, 0.05) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 100%, rgba(76, 108, 255, 0.04) 0%, transparent 50%);
        }

        img {
            max-width: 100%;
        }

        a {
            text-decoration: none;
            transition: color 0.25s ease;
        }

        button,
        input {
            font-family: inherit;
        }

        [class*="col-"] {
            min-width: 0;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            padding-top: 18px;
            background: linear-gradient(180deg, rgba(5, 13, 24, 0.8) 0%, rgba(5, 13, 24, 0.3) 50%, transparent 100%);
            transition: background 0.4s ease, box-shadow 0.4s ease, padding 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(5, 13, 24, 0.55);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding-top: 10px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
        }

        .dock-wrap {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 14px;
        }

        .dock-nav {
            background: var(--glass-bg-strong);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-pill);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
            padding: 0 8px !important;
            min-height: 58px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: baseline;
            gap: 4px;
            font-weight: 700;
            line-height: 1.2;
            white-space: nowrap;
            padding: 4px 0;
        }

        .brand-main {
            font-size: 1.5rem;
            color: #e6fbff;
            background: linear-gradient(135deg, #d6f8ff 10%, var(--primary) 90%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 0.01em;
        }

        .brand-sub {
            font-size: 1.05rem;
            color: rgba(168, 214, 255, 0.55);
            font-weight: 500;
            letter-spacing: 0.05em;
        }

        .nav-items {
            gap: 6px;
            margin: 0 20px;
        }

        .nav-items .nav-link {
            font-size: 0.94rem;
            color: rgba(214, 230, 250, 0.72);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-items .nav-link::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            transition: width 0.3s ease;
        }

        .nav-items .nav-link:hover {
            color: var(--primary);
            background: rgba(0, 226, 255, 0.06);
        }

        .nav-items .nav-link:hover::after {
            width: 60%;
        }

        .nav-items .nav-link.active {
            color: var(--primary);
            background: rgba(0, 226, 255, 0.08);
        }

        .nav-items .nav-link.active::after {
            width: 60%;
        }

        .navbar-toggler {
            border: 1px solid rgba(120, 220, 255, 0.25);
            background: rgba(13, 34, 56, 0.6);
            padding: 6px 10px;
            border-radius: 12px;
            color: var(--text-1);
            box-shadow: none !important;
            outline: none;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--primary) !important;
            border-color: var(--primary);
        }

        .btn-glow-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #00e2ff, #4c6cff);
            color: #001022;
            border: none;
            padding: 9px 22px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            box-shadow: 0 0 16px rgba(0, 226, 255, 0.18);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-glow-primary:hover {
            color: #00081a;
            box-shadow: 0 0 28px rgba(0, 226, 255, 0.42);
            transform: translateY(-2px);
        }

        .btn-glow-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-glass {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(13, 34, 56, 0.45);
            border: 1px solid rgba(120, 220, 255, 0.3);
            color: var(--text-1);
            padding: 9px 22px;
            border-radius: var(--radius-pill);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            cursor: pointer;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .btn-glass:hover {
            border-color: rgba(0, 226, 255, 0.7);
            color: var(--primary);
            background: rgba(0, 226, 255, 0.06);
            transform: translateY(-2px);
        }

        .category-page {
            position: relative;
            padding-top: 100px;
            background: var(--bg-0);
        }

        .category-hero {
            position: relative;
            padding: 72px 0 64px;
            overflow: hidden;
            background:
                linear-gradient(rgba(5, 13, 24, 0.72), rgba(5, 13, 24, 0.35)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            width: 520px;
            height: 520px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 226, 255, 0.12) 0%, transparent 70%);
            top: -100px;
            right: -60px;
            pointer-events: none;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(76, 108, 255, 0.08) 0%, transparent 70%);
            bottom: -120px;
            left: 10%;
            pointer-events: none;
        }

        .category-hero .container-xxl {
            position: relative;
            z-index: 2;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(13, 34, 56, 0.6);
            border: 1px solid rgba(120, 220, 255, 0.2);
            border-radius: 999px;
            padding: 6px 18px;
            font-size: 0.85rem;
            color: var(--text-2);
            backdrop-filter: blur(8px);
            margin-bottom: 20px;
        }

        .hero-tag i {
            color: var(--success);
            font-size: 0.6rem;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 0 0 rgba(46, 230, 168, 0.5);
            }
            50% {
                opacity: 0.7;
                box-shadow: 0 0 0 6px rgba(46, 230, 168, 0);
            }
        }

        .category-hero h1 {
            font-size: clamp(2rem, 4.2vw, 3.2rem);
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--text-1);
            max-width: 720px;
        }

        .category-hero h1 .text-grad {
            background: linear-gradient(135deg, #00e2ff, #8aa2ff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .category-hero .lead {
            font-size: 1.1rem;
            color: var(--text-2);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 26px;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 34px;
        }

        .hero-badges span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-2);
            background: rgba(13, 34, 56, 0.52);
            border: 1px solid rgba(120, 220, 255, 0.16);
            border-radius: 999px;
            padding: 7px 18px;
            backdrop-filter: blur(6px);
        }

        .hero-badges i {
            color: var(--primary);
        }

        .hero-action {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .category-stats {
            position: relative;
            padding: 36px 0;
            background: var(--bg-1);
            border-bottom: 1px solid rgba(120, 220, 255, 0.1);
        }

        .category-stats .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            text-align: center;
        }

        .stats-grid .stat-item {
            padding: 18px 14px;
            background: rgba(13, 34, 56, 0.35);
            border-radius: var(--radius-item);
            border: 1px solid rgba(120, 220, 255, 0.08);
        }

        .stat-item .stat-number {
            font-family: "DIN Alternate", "Roboto Mono", monospace;
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-2);
        }

        .category-main-section {
            padding: 80px 0;
            background: var(--bg-0);
            position: relative;
        }

        .category-main-section::before {
            content: "";
            position: absolute;
            inset: 0;
            z-index: 0;
            background:
                radial-gradient(ellipse at 85% 30%, rgba(76, 108, 255, 0.03) 0%, transparent 60%),
                radial-gradient(ellipse at 10% 80%, rgba(0, 226, 255, 0.02) 0%, transparent 40%);
            pointer-events: none;
        }

        .category-main-section .container-xxl {
            position: relative;
            z-index: 2;
        }

        .section-title-wrap {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 48px;
        }

        .section-title-wrap .title-block {
            max-width: 640px;
        }

        .section-title-wrap h2 {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.3;
            position: relative;
            padding-left: 18px;
            margin-bottom: 10px;
            color: var(--text-1);
        }

        .section-title-wrap h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 6px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--primary), var(--primary-2));
            box-shadow: 0 0 14px rgba(0, 226, 255, 0.5);
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-2);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .section-title-wrap .view-slot {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text-2);
            font-size: 0.92rem;
            transition: all 0.3s ease;
        }

        .section-title-wrap .view-slot i {
            transition: transform 0.3s ease;
            color: var(--primary);
        }

        .section-title-wrap .view-slot:hover {
            color: var(--primary);
        }

        .section-title-wrap .view-slot:hover i {
            transform: translateX(4px);
        }

        .help-scene-card {
            background: rgba(16, 40, 66, 0.62);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            height: 100%;
            padding: 30px 26px;
        }

        .help-scene-card::before {
            content: "";
            position: absolute;
            right: -50px;
            top: -50px;
            width: 120px;
            height: 120px;
            background: radial-gradient(circle, rgba(0, 226, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            transition: opacity 0.3s ease;
        }

        .help-scene-card:hover {
            border-color: rgba(0, 226, 255, 0.4);
            box-shadow: 0 18px 60px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(0, 226, 255, 0.1);
            transform: translateY(-6px);
        }

        .help-scene-icon {
            width: 62px;
            height: 62px;
            border-radius: var(--radius-item);
            background: rgba(0, 226, 255, 0.1);
            border: 1px solid rgba(0, 226, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 18px;
            position: relative;
            z-index: 1;
            transition: all 0.3s ease;
        }

        .help-scene-card:hover .help-scene-icon {
            background: rgba(0, 226, 255, 0.18);
            box-shadow: 0 0 14px rgba(0, 226, 255, 0.2);
        }

        .help-scene-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-1);
            margin-bottom: 10px;
        }

        .help-scene-card p {
            font-size: 0.95rem;
            color: var(--text-2);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .help-steps-section {
            padding: 80px 0;
            background: linear-gradient(rgba(5, 13, 24, 0.95), rgba(5, 13, 24, 0.98)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            position: relative;
        }

        .help-steps-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 20%, rgba(0, 226, 255, 0.04) 0%, transparent 60%);
            pointer-events: none;
        }

        .help-steps-section .container-xxl {
            position: relative;
            z-index: 1;
        }

        .steps-flow {
            position: relative;
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 30px;
        }

        .steps-flow::before {
            content: "";
            position: absolute;
            top: 50%;
            left: 15%;
            right: 15%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 226, 255, 0.3), rgba(76, 108, 255, 0.3), transparent);
            z-index: 0;
            display: none;
        }

        .step-item {
            flex: 1 1 220px;
            max-width: 280px;
            background: rgba(13, 34, 56, 0.62);
            border: 1px solid rgba(120, 220, 255, 0.16);
            border-radius: var(--radius-card);
            padding: 30px 24px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .step-item:hover {
            border-color: rgba(0, 226, 255, 0.45);
            transform: translateY(-6px);
            box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
        }

        .step-num {
            font-family: "DIN Alternate", "Roboto Mono", monospace;
            font-size: 2.2rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 10px;
        }

        .step-icon {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: rgba(0, 226, 255, 0.08);
            border: 1px solid rgba(0, 226, 255, 0.2);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .step-item h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-1);
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 0.9rem;
            color: var(--text-2);
            line-height: 1.65;
            margin-bottom: 0;
        }

        .help-faqs-section {
            padding: 80px 0;
            position: relative;
            background: var(--bg-0);
        }

        .help-faqs-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 80% 10%, rgba(76, 108, 255, 0.04) 0%, transparent 50%);
            pointer-events: none;
        }

        .faq-container {
            max-width: 860px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .faq-item {
            background: rgba(16, 40, 66, 0.62);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-item);
            margin-bottom: 16px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .faq-item.focused {
            border-color: rgba(0, 226, 255, 0.4);
            box-shadow: 0 0 0 1px rgba(0, 226, 255, 0.15);
        }

        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            text-align: left;
            padding: 22px 22px 22px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 1.07rem;
            font-weight: 600;
            color: var(--text-1);

        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 226, 255, 0.08);
            border: 1px solid rgba(0, 226, 255, 0.25);
            font-size: 0.85rem;
            color: var(--primary);
            transition: all 0.3s ease;
        }

        .faq-question .faq-icon i {
            transition: transform 0.3s ease;
        }

        .faq-question[aria-expanded="true"] .faq-icon {
            background: rgba(0, 226, 255, 0.15);
        }

        .faq-question[aria-expanded="true"] .faq-icon i {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px 22px;
            color: var(--text-2);
            font-size: 0.98rem;
            line-height: 1.85;
            border-top: 1px solid rgba(120, 220, 255, 0.1);
            padding-top: 18px;
            background: rgba(5, 13, 24, 0.18);
        }

        .faq-answer p {
            margin-bottom: 10px;
        }

        .faq-answer ul {
            padding-left: 18px;
            list-style: none;
        }

        .faq-answer ul li {
            padding-left: 14px;
            position: relative;
        }

        .faq-answer ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 12px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }

        .notice-box {
            background: rgba(255, 182, 72, 0.06);
            border: 1px solid rgba(255, 182, 72, 0.2);
            border-radius: var(--radius-item);
            padding: 26px 30px;
            margin-top: 40px;
            display: flex;
            align-items: center;
            gap: 20px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
            backdrop-filter: blur(8px);
        }

        .notice-box i {
            font-size: 1.8rem;
            color: var(--accent);
            flex-shrink: 0;
        }

        .notice-box p {
            color: var(--text-2);
            font-size: 0.98rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .notice-box p strong {
            color: var(--text-1);
        }

        .quick-help-section {
            padding: 56px 0 80px;
            background: var(--bg-0);
            position: relative;
        }

        .quick-help-section .container-xxl {
            position: relative;
            z-index: 1;
        }

        .quick-help-wrap {
            background: linear-gradient(135deg, rgba(13, 34, 56, 0.6), rgba(16, 40, 66, 0.45));
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 42px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 32px;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .quick-help-wrap::before {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(76, 108, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .quick-help-text {
            flex: 1;
            min-width: 260px;
        }

        .quick-help-text h2 {
            font-size: clamp(1.4rem, 2.4vw, 1.9rem);
            font-weight: 700;
            color: var(--text-1);
            margin-bottom: 10px;
        }

        .quick-help-text p {
            color: var(--text-2);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 520px;
        }

        .quick-help-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .footer-cta-section {
            position: relative;
            padding: 0 0 64px;
            background: var(--bg-0);
        }

        .footer-cta-wrap {
            background: linear-gradient(135deg, rgba(13, 34, 56, 0.65), rgba(16, 40, 66, 0.5));
            border: 1px solid rgba(120, 220, 255, 0.14);
            border-radius: var(--radius-card);
            padding: 50px 42px;
            text-align: center;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
        }

        .footer-cta-wrap::before {
            content: "";
            position: absolute;
            inset: -40px;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 0L60 30 30 60 0 30z' fill='none' stroke='rgba(0,226,255,0.05)' stroke-width='1'/%3E%3C/svg%3E") repeat;
            opacity: 0.3;
            pointer-events: none;
        }

        .footer-cta-wrap>* {
            position: relative;
            z-index: 1;
        }

        .footer-cta-wrap h2 {
            font-size: clamp(1.4rem, 2.6vw, 2rem);
            font-weight: 700;
            color: var(--text-1);
            margin-bottom: 12px;
        }

        .footer-cta-wrap p {
            color: var(--text-2);
            font-size: 1rem;
            line-height: 1.7;
            max-width: 560px;
            margin: 0 auto 26px;
        }

        .site-footer {
            background: #040a14;
            position: relative;
            border-top: 1px solid rgba(120, 220, 255, 0.1);
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 226, 255, 0.3), transparent);
        }

        .footer-top {
            padding: 56px 0 32px;
            background: linear-gradient(180deg, transparent, rgba(8, 21, 38, 0.3) 40%);
        }

        .footer-brand .brand-logo {
            margin-bottom: 18px;
        }

        .footer-about {
            font-size: 0.94rem;
            color: var(--text-2);
            line-height: 1.8;
            margin: 0 0 20px;
            max-width: 400px;
        }

        .footer-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-tag-cloud span {
            font-size: 0.8rem;
            color: rgba(190, 215, 245, 0.6);
            background: rgba(13, 34, 56, 0.5);
            border: 1px solid rgba(120, 220, 255, 0.1);
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }

        .footer-categories h4,
        .footer-service h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: rgba(214, 230, 250, 0.9);
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-2);
            font-size: 0.92rem;
            transition: all 0.25s ease;
            padding: 2px 0;
        }

        .footer-links a i {
            font-size: 0.75rem;
            color: rgba(120, 220, 255, 0.4);
            transition: all 0.25s ease;
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-links a:hover i {
            color: var(--primary);
            transform: translateX(3px);
        }

        .footer-bottom {
            padding: 20px 0 24px;
            background: rgba(0, 0, 0, 0.3);
            border-top: 1px solid rgba(120, 220, 255, 0.06);
        }

        .footer-bottom .copyright-line {
            text-align: center;
        }

        .copyright-line p {
            font-size: 0.9rem;
            color: var(--text-3);
            margin: 0;
            line-height: 1.7;
        }

        .copyright-line .brand-tag {
            color: rgba(190, 215, 245, 0.7);
        }

        .copy-address {
            font-size: 0.8rem;
            opacity: 0.8;
        }

        @media (max-width: 1199px) {
            .nav-items {
                gap: 4px;
            }
            .nav-items .nav-link {
                padding: 8px 12px;
                font-size: 0.88rem;
            }
        }

        @media (max-width: 991.98px) {
            .site-header {
                padding-top: 12px;
            }
            .dock-nav {
                border-radius: 20px;
                padding: 6px 14px !important;
            }
            .nav-items {
                margin: 10px 0;
            }
            .nav-items .nav-link {
                padding: 10px 14px;
                font-size: 0.95rem;
            }
            .nav-items .nav-link::after {
                display: none;
            }
            .dock-actions {
                width: 100%;
                margin: 6px 0 10px;
                display: flex;
                align-items: center;
                justify-content: center;
                border-top: 1px solid rgba(120, 220, 255, 0.08);
                padding-top: 12px;
            }
            .category-hero {
                padding: 120px 0 48px;
            }
            .navbar-collapse {
                background: rgba(8, 21, 38, 0.95);
                border: 1px solid rgba(120, 220, 255, 0.14);
                border-radius: 20px;
                padding: 14px 20px;
                margin-top: 10px;
                backdrop-filter: blur(20px);
            }
            .category-stats .stats-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 14px;
            }
        }

        @media (max-width: 767px) {
            .category-hero {
                padding: 112px 0 40px;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .lead {
                font-size: 1rem;
            }
            .category-main-section,
            .help-steps-section,
            .help-faqs-section {
                padding: 56px 0;
            }
            .section-title-wrap {
                margin-bottom: 34px;
            }
            .quick-help-wrap {
                padding: 30px 24px;
            }
            .footer-cta-wrap {
                padding: 36px 24px;
            }
            .steps-flow::before {
                display: none;
            }
            .step-item {
                flex: 1 1 100%;
                max-width: 100%;
            }
            .step-item {
                display: flex;
                align-items: center;
                gap: 20px;
                text-align: left;
                padding: 22px;
            }
            .step-item .step-num {
                order: 3;
                margin-left: auto;
                font-size: 1.6rem;
                margin-bottom: 0;
            }
            .step-item .step-icon {
                flex-shrink: 0;
                margin-bottom: 0;
            }
            .step-item .step-content {
                flex: 1;
            }
            .step-item h3 {
                margin-bottom: 4px;
            }
            .notice-box {
                flex-direction: column;
                padding: 22px;
                text-align: center;
                gap: 10px;
            }
            .category-stats .stats-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 8px;
            }
            .stats-grid .stat-item {
                padding: 14px 8px;
            }
            .quick-help-wrap {
                flex-direction: column;
                text-align: center;
            }
            .quick-help-actions {
                justify-content: center;
            }
        }

        @media (max-width: 575px) {
            .category-hero {
                padding: 112px 0 36px;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .hero-badges {
                gap: 8px;
            }
            .hero-badges span {
                font-size: 0.82rem;
                padding: 5px 12px;
            }
            .hero-action {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-action .btn-glow-primary,
            .hero-action .btn-glass {
                justify-content: center;
            }
            .category-stats .stats-grid {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .category-main-section,
            .help-steps-section,
            .help-faqs-section {
                padding: 50px 0;
            }
            .section-title-wrap h2 {
                font-size: 1.55rem;
            }
            .faq-question {
                font-size: 1rem;
                padding: 18px 16px;
            }
            .faq-answer {
                padding: 0 16px 18px;
                font-size: 0.94rem;
            }
            .footer-cta-wrap {
                padding: 28px 18px;
            }
            .footer-cta-wrap h2 {
                font-size: 1.3rem;
            }
            .quick-help-wrap {
                padding: 24px 18px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation: none !important;
                transition: none !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category2 */
:root {
            --bg-0: #050d18;
            --bg-1: #081526;
            --bg-2: #0c1f33;
            --glass-bg: rgba(13, 34, 56, 0.55);
            --glass-bg-strong: rgba(16, 40, 66, 0.78);
            --glass-border: rgba(120, 220, 255, 0.18);
            --primary: #00e2ff;
            --primary-2: #4c6cff;
            --accent: #ffb648;
            --text-1: #e8f2ff;
            --text-2: rgba(214, 230, 250, 0.72);
            --text-3: rgba(170, 195, 225, 0.45);
            --success: #2ee6a8;
            --r-lg: 24px;
            --r-md: 16px;
            --r-pill: 999px;
            --shadow-card: 0 12px 40px rgba(0, 10, 30, 0.25);
            --shadow-hover: 0 18px 60px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(0, 226, 255, 0.1);
            --shadow-glow: 0 0 16px rgba(0, 226, 255, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            --font-serif: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", serif;
            --font-num: "DIN Alternate", "Roboto Mono", "JetBrains Mono", monospace;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg-0);
            color: var(--text-1);
            font-family: var(--font-sans);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            z-index: -1;
            background:
                radial-gradient(900px 420px at 12% -8%, rgba(76, 108, 255, 0.13), transparent 62%),
                radial-gradient(720px 520px at 92% 12%, rgba(0, 226, 255, 0.08), transparent 58%),
                var(--bg-0);
            pointer-events: none;
        }

        img {
            max-width: 100%;
            display: inline-block;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .25s ease;
        }

        a:hover {
            color: #7ff0ff;
        }

        .container-xxl {
            --bs-gutter-x: 1.5rem;
            max-width: 1200px;
        }

        section {
            position: relative;
        }

        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 6px;
        }

        ::selection {
            background: rgba(0, 226, 255, .25);
            color: #fff;
        }

        ::placeholder {
            color: var(--text-3);
        }

        /* Header Dock Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 14px 0 6px;
            pointer-events: none;
        }

        .dock-wrap {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 12px;
            padding-right: 12px;
        }

        .dock-nav {
            margin: 0 auto;
            background: var(--glass-bg-strong);
            border: 1px solid var(--glass-border);
            border-radius: var(--r-pill);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.32);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            padding: .35rem .45rem;
            pointer-events: auto;
            transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
        }

        .site-header.is-scrolled .dock-nav {
            background: rgba(10, 28, 48, .9);
            box-shadow: 0 16px 50px rgba(0, 0, 0, .42);
            border-color: rgba(0, 226, 255, .4);
        }

        .dock-nav .container-fluid {
            gap: .25rem;
        }

        .brand-logo {
            display: inline-flex;
            align-items: baseline;
            line-height: 1.2;
            white-space: nowrap;
        }

        .brand-main {
            font-size: 1.25rem;
            font-weight: 700;
            color: #dff4ff;
            letter-spacing: .02em;
            text-shadow: 0 0 16px rgba(0, 226, 255, .22);
        }

        .brand-sub {
            font-size: .88rem;
            font-weight: 600;
            color: var(--text-3);
            margin-left: 5px;
            letter-spacing: .08em;
        }

        .navbar-toggler {
            border: 1px solid rgba(120, 220, 255, .2);
            border-radius: 14px;
            padding: 4px 10px;
            background: rgba(0, 226, 255, .08);
            color: var(--text-1);
            box-shadow: none;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 0 rgba(0, 226, 255, .25);
        }

        .nav-items {
            gap: 2px;
        }

        .nav-items .nav-link {
            color: var(--text-2);
            font-size: .96rem;
            font-weight: 500;
            border-radius: var(--r-pill);
            padding: .55rem .9rem !important;
            transition: all .25s ease;
            line-height: 1.4;
        }

        .nav-items .nav-link:hover {
            color: var(--primary);
            background: rgba(0, 226, 255, .06);
            box-shadow: inset 0 -2px 0 rgba(0, 226, 255, .35);
        }

        .nav-items .nav-link.active {
            color: #f0fdff;
            background: linear-gradient(135deg, rgba(0, 226, 255, .22), rgba(76, 108, 255, .14));
            box-shadow: inset 0 0 0 1px rgba(0, 226, 255, .35), 0 0 16px rgba(0, 226, 255, .15);
        }

        .dock-actions {
            gap: .85rem;
        }

        .btn-glow-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            border: none;
            border-radius: var(--r-pill);
            padding: .6rem 1.2rem;
            font-size: .95rem;
            font-weight: 600;
            color: #001626;
            background: linear-gradient(135deg, #00e2ff, #4c6cff);
            box-shadow: 0 4px 20px rgba(0, 226, 255, .28);
            transition: all .25s ease;
            white-space: nowrap;
            line-height: 1.4;
        }

        .btn-glow-primary:hover {
            color: #001626;
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 226, 255, .45), 0 8px 32px rgba(76, 108, 255, .25);
        }

        .btn-glow-primary:active {
            transform: scale(.97);
        }

        .btn-glass {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            border-radius: var(--r-pill);
            padding: .6rem 1.2rem;
            font-size: .95rem;
            font-weight: 600;
            color: var(--text-1);
            background: rgba(13, 34, 56, .42);
            border: 1px solid var(--glass-border);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06);
            transition: all .25s ease;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-glass:hover {
            color: var(--primary);
            border-color: rgba(0, 226, 255, .5);
            background: rgba(0, 226, 255, .08);
            transform: translateY(-2px);
        }

        .btn-glass:active {
            transform: scale(.97);
        }

        /* Category Hero */
        .category-hero {
            padding: 84px 0 64px;
            overflow: hidden;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 1px solid rgba(120, 220, 255, .14);
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(5, 13, 24, .94) 8%, rgba(5, 13, 24, .76) 48%, rgba(8, 21, 38, .6) 100%);
        }

        .category-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(640px 340px at 72% 10%, rgba(0, 226, 255, .10), transparent 65%), radial-gradient(420px 320px at 82% 85%, rgba(255, 182, 72, .08), transparent 70%);
            pointer-events: none;
        }

        .category-hero .container-xxl {
            position: relative;
            z-index: 2;
        }

        .category-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: .55rem;
            padding: .35rem .85rem;
            border-radius: var(--r-pill);
            background: rgba(13, 34, 56, .6);
            border: 1px solid rgba(0, 226, 255, .28);
            color: var(--text-2);
            font-size: .86rem;
            letter-spacing: .03em;
            margin-bottom: 20px;
            backdrop-filter: blur(8px);
        }

        .eyebrow-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 0 rgba(0, 226, 255, .7);
            animation: pulse-dot 2s ease-out infinite;
        }

        @keyframes pulse-dot {
            0% {
                box-shadow: 0 0 0 0 rgba(0, 226, 255, .6);
            }
            70% {
                box-shadow: 0 0 0 9px rgba(0, 226, 255, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(0, 226, 255, 0);
            }
        }

        .category-title {
            font-size: clamp(2.25rem, 4.4vw, 3.7rem);
            font-weight: 700;
            letter-spacing: .02em;
            line-height: 1.2;
            color: var(--text-1);
            margin-bottom: 1rem;
            text-shadow: 0 0 32px rgba(0, 226, 255, .2);
        }

        .category-subtitle {
            font-size: 1.08rem;
            line-height: 1.8;
            color: var(--text-2);
            max-width: 700px;
            margin-bottom: 1.6rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: .8rem;
            align-items: center;
        }

        .hero-actions .btn-glow-primary,
        .hero-actions .btn-glass {
            font-size: 1rem;
            padding: .75rem 1.6rem;
        }

        .hero-panel {
            background: rgba(16, 40, 66, .52);
            border: 1px solid rgba(120, 220, 255, .2);
            border-radius: var(--r-lg);
            padding: 1.4rem;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
        }

        .hero-panel-head {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: .82rem;
            color: var(--text-3);
            letter-spacing: .16em;
            text-transform: uppercase;
            margin-bottom: .8rem;
        }

        .hero-panel ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .hero-panel li {
            display: flex;
            align-items: center;
            gap: .65rem;
            padding: .55rem 0;
            border-bottom: 1px dashed rgba(120, 220, 255, .16);
            color: var(--text-2);
            font-size: .92rem;
            line-height: 1.5;
        }

        .hero-panel li:last-child {
            border-bottom: 0;
        }

        .hero-panel li i {
            color: var(--primary);
            font-size: 1rem;
        }

        .hero-panel li span {
            margin-left: auto;
            color: var(--text-1);
            font-weight: 600;
        }

        .hero-stats {
            max-width: 1200px;
            margin: 40px auto 0;
            position: relative;
            z-index: 2;
        }

        .hero-stat-bar {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            border-radius: var(--r-lg);
            background: rgba(13, 34, 56, .5);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            padding: 1.2rem 1rem;
            box-shadow: var(--shadow-card);
        }

        .hero-stat-item {
            text-align: center;
            padding: 0 .8rem;
            position: relative;
        }

        .hero-stat-item+.hero-stat-item::after {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 60%;
            background: linear-gradient(to bottom, transparent, rgba(0, 226, 255, .35), transparent);
        }

        .hero-stat-name {
            font-size: .8rem;
            color: var(--text-3);
            margin-bottom: .2rem;
            letter-spacing: .06em;
        }

        .hero-stat-desc {
            font-size: 1rem;
            color: var(--text-1);
            font-weight: 600;
            line-height: 1.5;
            padding: 0 .25rem;
        }

        /* General Block */
        .section-block {
            padding: 84px 0;
        }

        .section-block-alt {
            background: var(--bg-1);
            border-top: 1px solid rgba(120, 220, 255, .12);
            border-bottom: 1px solid rgba(120, 220, 255, .12);
        }

        .section-head {
            margin-bottom: 36px;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            font-size: .82rem;
            color: var(--primary);
            letter-spacing: .08em;
            padding: .32rem .8rem;
            background: rgba(0, 226, 255, .06);
            border: 1px solid rgba(0, 226, 255, .18);
            border-radius: var(--r-pill);
            margin-bottom: 14px;
        }

        .section-kicker::before {
            content: "";
            width: 16px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), transparent);
            border-radius: 2px;
        }

        .section-title {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 700;
            color: var(--text-1);
            line-height: 1.3;
            margin-bottom: .8rem;
            position: relative;
            padding-left: 16px;
        }

        .section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: .12em;
            width: 6px;
            height: .85em;
            background: linear-gradient(to bottom, var(--primary), var(--primary-2));
            border-radius: 4px;
            box-shadow: 0 0 14px rgba(0, 226, 255, .5);
        }

        .section-remark {
            color: var(--text-3);
            font-size: .92rem;
            line-height: 1.7;
            margin-top: -6px;
        }

        .glass-card {
            background: rgba(13, 34, 56, .55);
            border: 1px solid var(--glass-border);
            border-radius: var(--r-lg);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: transform .28s ease-out, box-shadow .28s ease-out, border-color .28s ease-out;
            overflow: hidden;
        }

        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 226, 255, .45);
        }

        .glass-card .card-body-custom {
            padding: 1.5rem;
        }

        /* Reward Card Grid */
        .reward-type-section {
            background: transparent;
        }

        .feature-reward-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .feature-reward-media {
            position: relative;
            overflow: hidden;
            min-height: 190px;
            border-radius: var(--r-lg) var(--r-lg) 0 0;
        }

        .feature-reward-media img {
            width: 100%;
            height: 230px;
            object-fit: cover;
            transition: transform .6s ease-out;
        }

        .glass-card:hover .feature-reward-media img {
            transform: scale(1.03);
        }

        .media-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(13, 34, 56, .65);
            color: var(--accent);
            border: 1px solid rgba(255, 182, 72, .5);
            border-radius: var(--r-pill);
            padding: .2rem .75rem;
            font-size: .8rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            backdrop-filter: blur(8px);
        }

        .feature-reward-body {
            padding: 1.6rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .feature-reward-body h3,
        .mini-reward-body h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--text-1);
        }

        .feature-reward-body p,
        .mini-reward-body p {
            font-size: .97rem;
            line-height: 1.75;
            color: var(--text-2);
            margin: .7rem 0 1.2rem;
        }

        .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: .45rem;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            background: rgba(0, 226, 255, .06);
            border: 1px solid rgba(120, 220, 255, .2);
            border-radius: var(--r-pill);
            color: var(--text-2);
            padding: .22rem .8rem;
            font-size: .78rem;
        }

        .tag-chip-warm {
            background: rgba(255, 182, 72, .08);
            border-color: rgba(255, 182, 72, .25);
            color: #ffe1b0;
        }

        .mini-reward-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            border-radius: var(--r-lg);
            padding: 1.3rem;
            background: rgba(13, 34, 56, .5);
            border: 1px solid var(--glass-border);
            transition: all .28s ease;
        }

        .mini-reward-card:hover {
            background: rgba(18, 46, 72, .72);
            border-color: rgba(0, 226, 255, .45);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .mini-icon {
            width: 52px;
            height: 52px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            background: linear-gradient(135deg, rgba(0, 226, 255, .2), rgba(76, 108, 255, .1));
            border: 1px solid rgba(0, 226, 255, .25);
            margin-bottom: 1rem;
        }

        .accent-icon {
            color: var(--accent);
            background: rgba(255, 182, 72, .14);
            border-color: rgba(255, 182, 72, .28);
        }

        .mini-reward-body h3 {
            font-size: 1.1rem;
            margin-bottom: .35rem;
        }

        /* Condition rule panel */
        .rule-note-panel {
            background: rgba(255, 182, 72, .06);
            border: 1px solid rgba(255, 182, 72, .2);
            border-radius: var(--r-lg);
            padding: 1.2rem 1.4rem;
            color: var(--text-2);
            font-size: .95rem;
            display: flex;
            gap: .7rem;
            align-items: flex-start;
            margin-top: 20px;
        }

        .rule-note-panel i {
            color: var(--accent);
            font-size: 1.25rem;
            line-height: 1.4;
        }

        /* Flow Section */
        .flow-section {
            position: relative;
        }

        .flow-track {
            position: relative;
            z-index: 1;
        }

        .flow-track::before {
            content: "";
            position: absolute;
            left: 40px;
            right: 40px;
            top: 28px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 226, 255, .45), rgba(76, 108, 255, .4), transparent);
            z-index: 0;
        }

        .flow-step {
            text-align: center;
            position: relative;
            z-index: 2;
            padding: 0 8px;
        }

        .flow-num {
            width: 58px;
            height: 58px;
            margin: 0 auto 1rem;
            border-radius: 50%;
            background: rgba(13, 34, 56, .8);
            border: 1px solid rgba(0, 226, 255, .38);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-num);
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--primary);
            box-shadow: 0 0 0 8px rgba(0, 226, 255, .04), 0 0 22px rgba(0, 226, 255, .2);
            backdrop-filter: blur(8px);
        }

        .flow-step h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-1);
            margin-bottom: .35rem;
        }

        .flow-step p {
            font-size: .9rem;
            color: var(--text-2);
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 220px;
            margin-right: auto;
            margin-left: auto;
        }

        /* Topic columns */
        .topic-card {
            height: 100%;
            background: rgba(13, 34, 56, .5);
            border: 1px solid var(--glass-border);
            border-radius: var(--r-lg);
            overflow: hidden;
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
        }

        .topic-card:hover {
            transform: translateY(-5px);
            border-color: rgba(0, 226, 255, .42);
            box-shadow: var(--shadow-hover);
        }

        .topic-thumb {
            position: relative;
            overflow: hidden;
            border-radius: var(--r-lg) var(--r-lg) 0 0;
            min-height: 160px;
        }

        .topic-thumb img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform .55s ease;
        }

        .topic-card:hover .topic-thumb img {
            transform: scale(1.04);
        }

        .topic-body {
            padding: 1.4rem 1.5rem 1.6rem;
        }

        .topic-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-1);
            margin-bottom: .55rem;
        }

        .topic-body p {
            font-size: .93rem;
            color: var(--text-2);
            line-height: 1.75;
            margin-bottom: 1rem;
        }

        .text-arrow-link {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-weight: 600;
            color: var(--primary);
            font-size: .9rem;
            transition: gap .25s;
        }

        .text-arrow-link i {
            transition: transform .25s;
        }

        .text-arrow-link:hover {
            color: #8ff4ff;
            gap: .7rem;
        }

        /* FAQ */
        .faq-accordion .accordion-item {
            background: rgba(13, 34, 56, .58);
            border: 1px solid var(--glass-border);
            border-radius: var(--r-lg) !important;
            margin-bottom: 14px;
            overflow: hidden;
            backdrop-filter: blur(10px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, .18);
        }

        .faq-accordion .accordion-item:last-child {
            margin-bottom: 0;
        }

        .faq-accordion .accordion-button {
            background: rgba(13, 34, 56, .4);
            border: 0;
            color: var(--text-1);
            font-size: 1.04rem;
            font-weight: 600;
            padding: 1.15rem 1.4rem;
            box-shadow: none;
            border-radius: var(--r-lg) !important;
        }

        .faq-accordion .accordion-button:hover {
            background: rgba(0, 226, 255, .05);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(0, 226, 255, .08);
            color: #eaffff;
        }

        .faq-accordion .accordion-button::after {
            background-image: none;
            font-family: "bootstrap-icons";
            content: "\f4fe";
            font-size: 1.3rem;
            color: var(--primary);
            width: auto;
            height: auto;
            transition: transform .28s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-accordion .accordion-body {
            padding: 0 1.4rem 1.25rem;
            color: var(--text-2);
            font-size: .95rem;
            line-height: 1.8;
            background: transparent;
            border-top: 1px dashed rgba(120, 220, 255, .14);
        }

        /* CTA Band */
        .cta-band {
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: "";
            position: absolute;
            inset: 40px 4% 40px;
            border-radius: 36px;
            border: 1px solid rgba(0, 226, 255, .14);
            background: linear-gradient(135deg, rgba(13, 34, 56, .68), rgba(76, 108, 255, .1));
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(10px);
            z-index: 0;
        }

        .cta-band::after {
            content: "";
            position: absolute;
            right: 12%;
            top: -30px;
            width: 240px;
            height: 240px;
            background: radial-gradient(closest-side, rgba(0, 226, 255, .18), transparent);
            z-index: 0;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 20px 0;
        }

        .cta-inner h2 {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 700;
            color: var(--text-1);
            margin-bottom: .5rem;
        }

        .cta-inner p {
            max-width: 680px;
            margin: 0 auto 1.1rem;
            color: var(--text-2);
            font-size: 1rem;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: .75rem;
            justify-content: center;
        }

        /* Footer */
        .site-footer {
            margin-top: 30px;
            background: rgba(5, 13, 24, .95);
            border-top: 1px solid rgba(120, 220, 255, .12);
            position: relative;
            z-index: 2;
        }

        .footer-top {
            padding: 60px 0 30px;
        }

        .footer-top .container-xxl {
            max-width: 1200px;
        }

        .footer-brand .brand-main {
            font-size: 1.5rem;
        }

        .footer-about {
            color: var(--text-2);
            font-size: .95rem;
            line-height: 1.8;
            max-width: 360px;
            margin: 1rem 0 1.2rem;
        }

        .footer-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: .5rem;
        }

        .footer-tag-cloud span {
            background: rgba(0, 226, 255, .06);
            border: 1px solid rgba(120, 220, 255, .16);
            border-radius: var(--r-pill);
            padding: .2rem .8rem;
            font-size: .8rem;
            color: var(--text-2);
            transition: all .2s;
        }

        .footer-tag-cloud span:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .site-footer h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-1);
            margin-bottom: 1.2rem;
            position: relative;
            padding-bottom: .55rem;
        }

        .site-footer h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 30px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), transparent);
            border-radius: 2px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: .6rem;
        }

        .footer-links a {
            color: var(--text-2);
            font-size: .94rem;
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            transition: color .2s, transform .2s;
        }

        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(3px);
        }

        .footer-links a i {
            font-size: .85rem;
            color: var(--text-3);
            transition: color .2s;
        }

        .footer-links a:hover i {
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(120, 220, 255, .12);
            background: rgba(0, 0, 0, .16);
            padding: 18px 0;
            color: var(--text-3);
            font-size: .86rem;
            line-height: 1.7;
        }

        .footer-bottom .container-xxl {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: .5rem;
            max-width: 1200px;
        }

        .footer-bottom .copy-text {
            color: var(--text-2);
        }

        .footer-bottom .legal-info a {
            color: var(--text-3);
        }

        @media (max-width: 991.98px) {
            .site-header {
                padding: 10px 0 4px;
            }

            .dock-wrap {
                padding-left: 10px;
                padding-right: 10px;
            }

            .dock-nav {
                border-radius: 22px;
                max-width: calc(100% - 8px);
                padding: .35rem .4rem;
            }

            .dock-nav .navbar-collapse {
                background: rgba(10, 28, 48, .92);
                border: 1px solid var(--glass-border);
                border-radius: 20px;
                padding: .75rem;
                margin-top: .75rem;
                backdrop-filter: blur(14px);
            }

            .nav-items .nav-link {
                padding: .65rem 1.1rem !important;
            }

            .dock-actions .nav-cta {
                display: inline-flex;
                margin-left: 0;
                margin-top: .2rem;
            }

            .category-hero {
                padding: 64px 0 50px;
            }

            .hero-panel {
                margin-top: 1.2rem;
            }

            .hero-stat-desc {
                font-size: .86rem;
            }

            .section-block {
                padding: 64px 0;
            }

            .flow-track::before {
                left: 29px;
                right: auto;
                top: 30px;
                width: 1px;
                height: 70%;
            }

            .flow-step {
                margin-bottom: 1.2rem;
            }
        }

        @media (max-width: 767.98px) {
            html {
                font-size: 15px;
            }

            .category-title {
                font-size: clamp(2rem, 8vw, 2.8rem);
            }

            .category-subtitle {
                font-size: .98rem;
            }

            .hero-actions .btn-glow-primary,
            .hero-actions .btn-glass {
                width: 100%;
                justify-content: center;
            }

            .hero-stat-bar {
                grid-template-columns: 1fr;
                gap: .4rem;
            }

            .hero-stat-item+.hero-stat-item::after {
                width: 80%;
                height: 1px;
                left: 10%;
                top: 0;
                right: auto;
            }

            .footer-bottom .container-xxl {
                flex-direction: column;
                text-align: center;
            }

            .footer-about {
                max-width: 100%;
            }
        }

        @media (max-width: 575.98px) {
            .glass-card {
                border-radius: var(--r-md);
            }

            .dock-nav .container-fluid {
                padding-left: .3rem;
                padding-right: .3rem;
            }

            .section-title {
                padding-left: 13px;
            }

            .section-title::before {
                width: 5px;
                border-radius: 3px;
            }

            .media-badge {
                top: 12px;
                left: 12px;
            }

            .feature-reward-media img {
                height: 180px;
            }

            .topic-thumb img {
                height: auto;
                min-height: 150px;
            }

            .cta-band::before {
                inset: 24px 3%;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                transition-duration: .01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category4 */
:root {
            --bg-0: #050d18;
            --bg-1: #081526;
            --bg-2: #0c1f33;
            --glass-bg: rgba(13, 34, 56, .55);
            --glass-bg-strong: rgba(16, 40, 66, .78);
            --glass-border: rgba(120, 220, 255, .16);
            --primary: #00e2ff;
            --primary-2: #4c6cff;
            --accent: #ffb648;
            --text-1: #e8f2ff;
            --text-2: rgba(214, 230, 250, .78);
            --text-3: rgba(170, 195, 225, .5);
            --success: #2ee6a8;
            --grad-main: linear-gradient(135deg, #00e2ff, #4c6cff);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-card: 0 16px 50px rgba(0, 8, 24, .3);
            --shadow-float: 0 20px 60px rgba(0, 0, 0, .35), 0 0 0 1px rgba(0, 226, 255, .08);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 130px;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            background: var(--bg-0);
            color: var(--text-1);
            line-height: 1.7;
            overflow-x: hidden;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .25s ease, background .25s ease, border-color .25s ease, box-shadow .25s ease, transform .25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        button,
        input,
        select {
            font-family: inherit;
            font-size: 1rem;
        }
        button {
            transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
        }
        .container-xxl {
            max-width: 1320px;
            padding-left: 1rem;
            padding-right: 1rem;
            margin-left: auto;
            margin-right: auto;
        }
        ::selection {
            background: rgba(0, 226, 255, .25);
            color: #fff;
        }
        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 4px;
            border-radius: 8px;
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: .01ms !important;
                scroll-behavior: auto !important;
            }
        }

        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            width: 100%;
            z-index: 2000;
            pointer-events: none;
        }
        .dock-wrap {
            max-width: 1260px;
            margin: 0 auto;
            padding: 0 14px;
            pointer-events: auto;
        }
        .dock-nav {
            width: 100%;
            background: rgba(14, 34, 56, .62);
            border: 1px solid rgba(120, 220, 255, .16);
            border-radius: 999px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: 0 10px 36px rgba(0, 0, 0, .28);
            padding: 8px 10px 8px 18px;
            transition: background .35s ease, box-shadow .35s ease;
        }
        .site-header.scrolled .dock-nav {
            background: rgba(16, 40, 66, .86);
            box-shadow: 0 18px 48px rgba(0, 0, 0, .38), 0 0 0 1px rgba(0, 226, 255, .06);
        }
        .brand-logo {
            display: inline-flex;
            align-items: baseline;
            gap: 0;
            white-space: nowrap;
            vertical-align: middle;
        }
        .brand-main {
            font-size: 1.26rem;
            font-weight: 800;
            letter-spacing: .02em;
            background: linear-gradient(120deg, #eaf6ff 10%, #7fdfff 55%, #00e2ff 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: #fff;
        }
        .brand-sub {
            font-size: .86rem;
            font-weight: 600;
            color: rgba(170, 215, 245, .72);
            margin-left: 5px;
        }
        .nav-items {
            gap: 4px;
        }
        .dock-nav .nav-link {
            color: rgba(220, 235, 255, .72);
            font-size: .96rem;
            font-weight: 500;
            border-radius: 999px;
            padding: .5rem .96rem;
            position: relative;
            transition: color .28s, background .28s, box-shadow .28s;
        }
        .dock-nav .nav-link:hover {
            color: var(--primary);
            background: rgba(0, 226, 255, .06);
            box-shadow: inset 0 -2px 0 rgba(0, 226, 255, .5);
        }
        .dock-nav .nav-link.active {
            background: rgba(0, 226, 255, .12);
            color: var(--primary);
            box-shadow: inset 0 -2px 0 var(--primary);
        }
        .dock-actions {
            gap: 12px;
        }
        .btn-glow-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            padding: .55rem 1.25rem;
            background: var(--grad-main);
            color: #001426;
            font-weight: 700;
            font-size: .95rem;
            line-height: 1.2;
            border: 0;
            box-shadow: 0 0 14px rgba(0, 226, 255, .22), 0 8px 24px rgba(0, 60, 120, .22);
            transition: transform .25s ease, box-shadow .28s ease, color .25s ease, filter .25s ease;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-glow-primary:hover {
            color: #001426;
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 226, 255, .5), 0 12px 32px rgba(0, 60, 120, .3);
            filter: brightness(1.06);
        }
        .btn-glow-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 16px rgba(0, 226, 255, .3);
        }
        .btn-glass {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: 999px;
            padding: .55rem 1.2rem;
            background: rgba(20, 48, 80, .38);
            color: #cfe9ff;
            border: 1px solid rgba(120, 220, 255, .28);
            font-weight: 600;
            font-size: .95rem;
            line-height: 1.2;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06);
            transition: border-color .3s, background .3s, transform .3s, box-shadow .3s;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-glass:hover {
            background: rgba(0, 226, 255, .08);
            border-color: rgba(0, 226, 255, .6);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 0 18px rgba(0, 226, 255, .15);
        }
        .navbar-toggler {
            border: 0;
            color: var(--primary);
            background: rgba(0, 226, 255, .12);
            border-radius: 999px;
            width: 44px;
            height: 40px;
            padding: 0;
            line-height: 1;
            box-shadow: none;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 226, 255, .3);
        }
        @media (max-width: 991.98px) {
            .site-header {
                top: 12px;
            }
            .dock-nav {
                border-radius: 24px;
                padding: 8px 10px;
            }
            .navbar-collapse {
                background: rgba(12, 28, 48, .94);
                border: 1px solid rgba(120, 220, 255, .16);
                border-radius: 22px;
                margin-top: 10px;
                padding: 14px 10px;
                backdrop-filter: blur(18px);
            }
            .nav-items {
                gap: 2px;
                margin-bottom: 10px;
            }
            .dock-nav .nav-link {
                display: block;
                padding: .62rem 1.1rem;
            }
            .dock-actions {
                padding: 6px 4px 2px;
            }
        }
        @media (max-width: 575.98px) {
            .brand-main {
                font-size: 1.12rem;
            }
            .brand-sub {
                font-size: .78rem;
            }
            .dock-wrap {
                padding: 0 8px;
            }
            .btn-glow-primary.nav-cta {
                padding: .55rem 1rem;
                font-size: .9rem;
            }
        }

        .site-main {
            overflow: hidden;
        }

        .doc-hero {
            position: relative;
            padding: 150px 0 70px;
            min-height: 380px;
            display: flex;
            align-items: flex-end;
            background: linear-gradient(180deg, #081426 0%, var(--bg-0) 100%), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
        }
        .doc-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(1, 8, 20, .88) 20%, rgba(10, 28, 50, .55) 68%, rgba(0, 120, 160, .2));
            z-index: 0;
        }
        .doc-hero::after {
            content: '';
            position: absolute;
            right: -120px;
            bottom: -220px;
            width: 520px;
            height: 480px;
            background: radial-gradient(circle, rgba(76, 108, 255, .3), transparent 68%);
            z-index: 1;
            pointer-events: none;
        }
        .doc-hero .hero-glow {
            position: absolute;
            left: -180px;
            top: -100px;
            width: 420px;
            height: 360px;
            background: radial-gradient(circle, rgba(0, 226, 255, .18), transparent 68%);
            z-index: 1;
            pointer-events: none;
        }
        .doc-hero .container-xxl {
            position: relative;
            z-index: 2;
        }
        .crumb-line {
            font-size: .85rem;
            color: var(--text-3);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            margin-bottom: 18px;
        }
        .crumb-line a {
            color: rgba(180, 210, 245, .7);
        }
        .crumb-line a:hover {
            color: var(--primary);
        }
        .crumb-line .sep {
            color: var(--text-3);
        }
        .crumb-line .here {
            color: var(--primary);
            font-weight: 500;
        }
        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 15px;
            background: rgba(0, 226, 255, .1);
            border: 1px solid rgba(0, 226, 255, .32);
            border-radius: 999px;
            font-size: .85rem;
            color: #9df0ff;
            letter-spacing: .06em;
            margin-bottom: 18px;
            box-shadow: 0 0 18px rgba(0, 226, 255, .12);
        }
        .kicker-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 10px var(--primary);
            animation: dotPulse 1.8s infinite;
        }
        @keyframes dotPulse {
            0%,
            100% {
                opacity: .7;
                transform: scale(1);
            }
            50% {
                opacity: 1;
                transform: scale(1.35);
            }
        }
        .doc-hero h1 {
            font-size: clamp(1.9rem, 4.6vw, 3.5rem);
            font-weight: 800;
            color: #eef7ff;
            max-width: 900px;
            line-height: 1.18;
            letter-spacing: .015em;
            text-shadow: 0 4px 20px rgba(0, 0, 0, .4);
            margin-bottom: 20px;
        }
        .doc-hero h1 .line-grad {
            background: linear-gradient(100deg, #7ae6ff, #00e2ff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .doc-hero .hero-desc {
            color: var(--text-2);
            font-size: 1.08rem;
            max-width: 760px;
            margin-bottom: 26px;
        }
        .hero-tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-chip {
            display: inline-flex;
            gap: 6px;
            align-items: center;
            padding: .32rem .9rem;
            border-radius: 999px;
            font-size: .86rem;
            color: var(--text-1);
            background: rgba(18, 48, 76, .4);
            border: 1px solid rgba(120, 220, 255, .18);
            backdrop-filter: blur(8px);
        }
        .tag-chip i {
            color: var(--primary);
            font-size: .9rem;
        }

        .quick-stat-strip {
            position: relative;
            z-index: 3;
            padding: 52px 0 30px;
            margin-top: -10px;
        }
        .stat-grid {
            border-radius: 24px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            border: 1px solid rgba(120, 220, 255, .12);
            background: linear-gradient(150deg, rgba(13, 34, 56, .74), rgba(8, 22, 38, .64));
            box-shadow: var(--shadow-card);
            padding: 1rem 0;
        }
        .stat-block {
            padding: 22px 18px;
            text-align: center;
            border-right: 1px solid rgba(120, 220, 255, .09);
        }
        .stat-block:last-child {
            border-right: 0;
        }
        .stat-num {
            font-family: "DIN Alternate", "Roboto Mono", "JetBrains Mono", monospace;
            font-size: 2rem;
            font-weight: 700;
            background: linear-gradient(90deg, #9befff, #4c6cff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 2px;
        }
        .stat-label {
            color: var(--text-3);
            font-size: .88rem;
            letter-spacing: .02em;
        }
        @media (max-width: 767.98px) {
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                row-gap: 0;
            }
            .stat-block:nth-child(2) {
                border-right: 0;
            }
            .stat-block:nth-child(-n+2) {
                border-bottom: 1px solid rgba(120, 220, 255, .08);
            }
            .doc-hero {
                padding: 132px 0 48px;
            }
        }

        .reader-wrapper {
            position: relative;
            padding: 36px 0 64px;
        }
        .reader-wrapper::before {
            content: '';
            position: absolute;
            left: 16%;
            top: 0;
            bottom: 0;
            width: 400px;
            background: radial-gradient(circle, rgba(0, 226, 255, .08), transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        .reader-sidebar,
        .reader-content {
            position: relative;
            z-index: 2;
        }

        .toc-card {
            position: sticky;
            top: 110px;
            background: linear-gradient(160deg, rgba(15, 38, 61, .72), rgba(7, 19, 34, .5));
            border: 1px solid rgba(120, 220, 255, .14);
            border-radius: 24px;
            padding: 26px 22px;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            max-height: calc(100vh - 130px);
            overflow-y: auto;
        }
        .toc-head {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
        }
        .toc-head-icon {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(0, 226, 255, .12);
            color: var(--primary);
            font-size: 1.2rem;
            border: 1px solid rgba(0, 226, 255, .2);
        }
        .toc-head h2 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text-1);
            margin: 0;
            letter-spacing: .03em;
        }
        .toc-list {
            list-style: none;
            margin: 0;
            padding: 0;
            border-left: 1px solid rgba(120, 220, 255, .16);
        }
        .toc-list li {
            display: block;
        }
        .toc-list a {
            display: flex;
            align-items: baseline;
            gap: 10px;
            padding: .62rem .8rem .62rem 1.2rem;
            font-size: .92rem;
            color: rgba(200, 222, 250, .68);
            border-left: 2px solid transparent;
            margin-left: -1px;
            line-height: 1.4;
            transition: color .28s, border-color .28s, background .28s;
        }
        .toc-list a .num {
            font-family: "DIN Alternate", monospace;
            font-size: .78rem;
            color: var(--text-3);
            min-width: 26px;
        }
        .toc-list a:hover {
            color: var(--primary);
            background: rgba(0, 226, 255, .05);
            border-left-color: var(--primary);
        }
        .toc-list a.active {
            color: var(--primary);
            border-left-color: var(--primary);
            background: linear-gradient(90deg, rgba(0, 226, 255, .1), transparent);
        }
        .toc-aside-card {
            margin-top: 20px;
            border-radius: 18px;
            overflow: hidden;
            border: 1px solid rgba(120, 220, 255, .15);
            background: rgba(8, 22, 38, .5);
        }
        .toc-aside-card img {
            width: 100%;
            height: 130px;
            object-fit: cover;
            transition: transform .8s ease;
        }
        .toc-aside-card:hover img {
            transform: scale(1.04);
        }
        .toc-aside-body {
            padding: 16px 16px 18px;
        }
        .toc-aside-body .tip-label {
            font-size: .78rem;
            color: var(--text-3);
            text-transform: uppercase;
            letter-spacing: .12em;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 8px;
        }
        .toc-aside-body .tip-label::after {
            content: '';
            height: 1px;
            flex: 1;
            background: linear-gradient(90deg, rgba(0, 226, 255, .25), transparent);
        }
        .toc-aside-body h3 {
            font-size: 1rem;
            color: var(--text-1);
            margin-bottom: 6px;
            font-weight: 600;
        }
        .toc-aside-body p {
            font-size: .85rem;
            color: var(--text-2);
            margin-bottom: 10px;
        }
        .toc-aside-body .text-link {
            font-size: .88rem;
            color: var(--primary);
        }
        .toc-select-wrap {
            display: none;
        }
        .toc-select {
            background: var(--bg-2);
            color: var(--text-1);
            border: 1px solid rgba(120, 220, 255, .25);
            border-radius: 14px;
            padding: .65rem 1rem;
            width: 100%;
            font-size: .95rem;
        }
        .toc-select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 226, 255, .12);
        }

        .manual-chapter {
            background: linear-gradient(155deg, rgba(15, 36, 58, .46), rgba(7, 18, 34, .3));
            border: 1px solid rgba(120, 220, 255, .13);
            border-radius: var(--radius-lg);
            padding: clamp(24px, 3.2vw, 42px);
            margin-bottom: 26px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, .15);
            transition: border-color .3s, box-shadow .3s;
        }
        .manual-chapter:first-of-type {
            border-top: 1px solid rgba(0, 226, 255, .2);
        }
        .manual-chapter:hover {
            border-color: rgba(0, 226, 255, .22);
            box-shadow: 0 18px 44px rgba(0, 0, 0, .22);
        }
        .chapter-topline {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 18px;
        }
        .chapter-index {
            font-family: "DIN Alternate", "Roboto Mono", monospace;
            background: linear-gradient(120deg, rgba(0, 226, 255, .18), rgba(76, 108, 255, .18));
            color: #78e8ff;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: .85rem;
            letter-spacing: .1em;
            border: 1px solid rgba(0, 226, 255, .2);
            white-space: nowrap;
        }
        .chapter-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex: 1;
        }
        .chapter-title h2 {
            font-size: clamp(1.35rem, 2.6vw, 1.92rem);
            font-weight: 700;
            color: #e6f4ff;
            margin: 0;
            line-height: 1.4;
        }
        .manual-chapter p {
            color: var(--text-2);
            font-size: 1rem;
            line-height: 1.9;
            margin-bottom: 16px;
            max-width: 840px;
        }
        .manual-chapter strong {
            color: #d7f7ff;
            font-weight: 600;
        }
        .manual-chapter h3 {
            font-size: 1.13rem;
            font-weight: 700;
            color: #bdeeff;
            margin-top: 28px;
            margin-bottom: 10px;
            border-left: 4px solid var(--primary);
            padding-left: 12px;
            border-radius: 2px;
        }
        .prose-list {
            list-style: none;
            padding: 0;
            display: grid;
            gap: 12px;
            margin: 20px 0;
        }
        .prose-list li {
            padding-left: 28px;
            position: relative;
            color: var(--text-2);
            font-size: .98rem;
            line-height: 1.8;
        }
        .prose-list li::before {
            content: '';
            position: absolute;
            left: 2px;
            top: .72em;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            box-shadow: 0 0 10px rgba(0, 226, 255, .4);
        }
        .inline-link {
            color: var(--primary);
            border-bottom: 1px solid rgba(0, 226, 255, .25);
            padding-bottom: 1px;
        }
        .inline-link:hover {
            color: #bdf5ff;
            border-bottom-color: var(--primary);
        }
        .prose-img {
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid rgba(120, 220, 255, .2);
            margin: 28px 0 10px;
            box-shadow: 0 14px 38px rgba(0, 0, 0, .2);
            background: var(--bg-2);
            position: relative;
        }
        .prose-img img {
            width: 100%;
            height: auto;
            min-height: 180px;
            object-fit: cover;
        }
        .prose-img .img-caption {
            padding: 12px 18px;
            font-size: .85rem;
            color: var(--text-3);
            border-top: 1px solid rgba(120, 220, 255, .08);
            background: rgba(6, 16, 28, .5);
        }
        .callout-card {
            border-radius: 18px;
            padding: 20px 22px;
            background: linear-gradient(135deg, rgba(19, 60, 90, .55), rgba(8, 28, 48, .5));
            border: 1px solid rgba(0, 226, 255, .22);
            border-left: 4px solid var(--primary);
            margin: 26px 0 8px;
            color: var(--text-2);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .2);
        }
        .callout-card strong {
            color: #a5f1ff;
        }
        .inline-tip-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 12px;
            margin: 26px 0 12px;
        }
        .tip-mini-card {
            background: rgba(8, 24, 42, .32);
            border: 1px solid rgba(120, 220, 255, .13);
            border-radius: 16px;
            padding: 16px 12px;
            text-align: center;
            transition: transform .25s ease, border-color .3s;
        }
        .tip-mini-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 226, 255, .4);
        }
        .tip-mini-card i {
            font-size: 1.4rem;
            color: var(--primary);
            display: block;
            margin-bottom: 8px;
        }
        .tip-mini-card span {
            font-size: .9rem;
            color: var(--text-1);
            display: block;
            font-weight: 500;
        }
        .tip-mini-card small {
            font-size: .78rem;
            color: var(--text-3);
            display: block;
            margin-top: 4px;
        }

        .chart-simple-list {
            list-style: none;
            margin: 18px 0 0;
            padding: 0;
            display: grid;
            gap: 10px;
        }
        .chart-simple-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: rgba(8, 22, 38, .35);
            border: 1px solid rgba(120, 220, 255, .09);
            border-radius: 16px;
            padding: 16px 18px;
            color: var(--text-2);
            transition: border-color .25s, background .3s;
        }
        .chart-simple-list li:hover {
            border-color: rgba(0, 226, 255, .25);
        }
        .chart-simple-list .rank-icon {
            width: 34px;
            height: 34px;
            flex: 0 0 34px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 226, 255, .12);
            color: var(--primary);
            font-size: 1rem;
            border: 1px solid rgba(0, 226, 255, .2);
        }

        .starter-cards-section {
            padding: 60px 0;
            background: linear-gradient(180deg, var(--bg-0), #071223);
            position: relative;
        }
        .starter-cards-section::before {
            content: '';
            position: absolute;
            right: 0;
            top: 0;
            width: 500px;
            height: 380px;
            background: radial-gradient(circle, rgba(0, 226, 255, .07), transparent 68%);
            pointer-events: none;
        }
        .section-heading {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 34px;
            position: relative;
            z-index: 2;
        }
        .section-heading h2 {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            color: var(--text-1);
            font-weight: 700;
            margin: 0;
            line-height: 1.3;
        }
        .section-heading h2 i {
            color: var(--primary);
            margin-right: 8px;
        }
        .section-heading p {
            color: var(--text-3);
            margin: 0;
            max-width: 400px;
            font-size: .95rem;
        }
        .starter-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .starter-card {
            background: linear-gradient(150deg, rgba(15, 36, 58, .6), rgba(6, 18, 36, .5));
            border: 1px solid rgba(120, 220, 255, .14);
            border-radius: 24px;
            padding: 24px 20px;
            box-shadow: 0 10px 28px rgba(0, 0, 0, .18);
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
        }
        .starter-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 226, 255, .45);
            box-shadow: 0 18px 44px rgba(0, 0, 0, .3);
        }
        .starter-card-icon {
            width: 46px;
            height: 46px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(0, 226, 255, .2), rgba(76, 108, 255, .18));
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            margin-bottom: 16px;
            border: 1px solid rgba(0, 226, 255, .2);
        }
        .starter-card h3 {
            color: var(--text-1);
            font-size: 1.18rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .starter-card p {
            color: var(--text-2);
            font-size: .92rem;
            line-height: 1.8;
            margin: 0 0 12px;
        }
        .starter-card-meter {
            height: 5px;
            background: rgba(120, 220, 255, .1);
            border-radius: 999px;
            overflow: hidden;
            display: flex;
        }
        .starter-card-meter i {
            display: block;
            height: 100%;
            border-radius: 999px;
            background: var(--grad-main);
            box-shadow: 0 0 10px rgba(0, 226, 255, .5);
            width: 74%;
        }
        .starter-card:nth-child(2) .starter-card-meter i {
            width: 82%;
        }
        .starter-card:nth-child(3) .starter-card-meter i {
            width: 68%;
        }
        .starter-card:nth-child(4) .starter-card-meter i {
            width: 90%;
        }

        .faq-section {
            padding: 60px 0 40px;
            background: #07101d;
            position: relative;
        }
        .faq-section::before {
            content: '';
            position: absolute;
            left: 50%;
            top: -120px;
            transform: translateX(-50%);
            width: 800px;
            height: 240px;
            background: radial-gradient(closest-side, rgba(0, 226, 255, .1), transparent);
            pointer-events: none;
        }
        .faq-panel {
            background: rgba(10, 28, 48, .5);
            border: 1px solid rgba(120, 220, 255, .12);
            border-radius: 24px;
            padding: clamp(20px, 3vw, 34px);
        }
        .faq-item {
            background: rgba(6, 18, 32, .4);
            border: 1px solid rgba(120, 220, 255, .11);
            border-radius: 18px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color .25s;
        }
        .faq-item:has(.show) {
            border-color: rgba(0, 226, 255, .3);
        }
        .faq-btn {
            width: 100%;
            background: transparent;
            border: 0;
            padding: 17px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            text-align: left;
            color: var(--text-1);
            font-size: 1rem;
            font-weight: 600;
            border-radius: 18px;
            cursor: pointer;
        }
        .faq-btn:hover {
            color: var(--primary);
        }
        .faq-icon {
            flex: 0 0 30px;
            width: 30px;
            height: 30px;
            border-radius: 9px;
            background: rgba(0, 226, 255, .12);
            color: var(--primary);
            border: 1px solid rgba(0, 226, 255, .2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .9rem;
            transform: rotate(0);
            transition: transform .3s ease;
        }
        .faq-btn[aria-expanded="true"] .faq-icon {
            transform: rotate(135deg);
        }
        .faq-answer {
            padding: 0 20px 20px;
            color: var(--text-2);
            line-height: 1.9;
            font-size: .96rem;
        }
        .faq-answer .answer-inner {
            border-top: 1px solid rgba(120, 220, 255, .1);
            padding-top: 16px;
        }

        .cta-band {
            padding: 80px 0;
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(3, 10, 22, .94), rgba(7, 24, 44, .88), rgba(0, 60, 90, .76));
            z-index: 0;
        }
        .cta-band-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
            margin: 0 auto;
        }
        .cta-band h2 {
            color: var(--text-1);
            font-size: clamp(1.7rem, 3.1vw, 2.5rem);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-band h2 span {
            background: linear-gradient(100deg, #8cf0ff, var(--primary));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .cta-band p {
            color: var(--text-2);
            font-size: 1.05rem;
            max-width: 650px;
            margin: 0 auto 30px;
        }
        .cta-btn-row {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .site-footer {
            position: relative;
            background: linear-gradient(180deg, #06101d, #030a14);
            border-top: 1px solid rgba(120, 220, 255, .1);
        }
        .footer-top {
            padding: 64px 0 40px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 18px;
        }
        .footer-about {
            color: var(--text-2);
            font-size: .95rem;
            line-height: 1.9;
            max-width: 460px;
            margin-top: 14px;
        }
        .footer-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
            max-width: 500px;
        }
        .footer-tag-cloud span {
            font-size: .82rem;
            color: #bfe9ff;
            background: rgba(0, 226, 255, .08);
            border: 1px solid rgba(0, 226, 255, .15);
            border-radius: 999px;
            padding: .3rem .8rem;
        }
        .footer-categories h4,
        .footer-service h4,
        .footer-guide h4 {
            color: var(--text-1);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: .02em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 10px;
        }
        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-2);
            font-size: .9rem;
            padding: 4px 0;
            transition: color .25s, transform .25s;
        }
        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(3px);
        }
        .footer-links i {
            font-size: .85rem;
            color: rgba(0, 226, 255, .8);
        }
        .footer-bottom {
            border-top: 1px solid rgba(120, 220, 255, .1);
            padding: 24px 0;
        }
        .footer-bottom-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: .86rem;
            color: var(--text-3);
        }
        .footer-bottom-row a {
            color: var(--text-3);
        }
        .footer-bottom-row a:hover {
            color: var(--primary);
        }
        .footer-domain {
            font-size: .8rem;
        }

        @media (max-width: 991.98px) {
            .reader-wrapper {
                padding-top: 16px;
            }
            .toc-desktop {
                display: none;
            }
            .toc-select-wrap {
                display: block;
                margin-bottom: 20px;
            }
            .toc-card {
                position: static;
                max-height: none;
                padding: 18px;
                margin-bottom: 24px;
            }
            .toc-aside-card {
                margin-top: 0;
            }
            .doc-hero {
                min-height: auto;
            }
            .inline-tip-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .starter-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-panel {
                padding: 18px;
            }
        }
        @media (max-width: 767.98px) {
            .site-header {
                top: 8px;
            }
            .quick-stat-strip {
                padding-top: 28px;
            }
            .section-heading {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                margin-bottom: 22px;
            }
            .section-heading p {
                max-width: 100%;
            }
            .manual-chapter {
                padding: 20px 16px;
                border-radius: 18px;
            }
            .chapter-title {
                flex-wrap: wrap;
            }
            .chart-simple-list li {
                flex-direction: column;
                gap: 6px;
            }
            .footer-top {
                padding: 44px 0 22px;
            }
            .footer-bottom-row {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }
        }
        @media (max-width: 575.98px) {
            .inline-tip-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .starter-grid {
                grid-template-columns: 1fr;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-num {
                font-size: 1.7rem;
            }
            .container-xxl {
                padding-left: .8rem;
                padding-right: .8rem;
            }
            .toc-card {
                border-radius: 18px;
            }
            .btn-glow-primary,
            .btn-glass {
                width: 100%;
            }
            .cta-btn-row {
                flex-direction: column;
            }
            .prose-img img {
                min-height: 120px;
            }
        }