/* roulang page: index */
:root {
            --bg-deep: #070D1D;
            --bg-raised: #0C1730;
            --glass-bg: rgba(16, 30, 58, 0.55);
            --glass-border: rgba(255, 255, 255, 0.12);
            --accent-cyan: #18D8E7;
            --accent-lime: #B7F04D;
            --accent-lime-deep: #7DDC3A;
            --accent-warm: #FFB45C;
            --text-main: #F2F7FF;
            --text-sub: #9FB0CC;
            --text-weak: #5E6F8E;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-base: 0 8px 24px rgba(0, 0, 0, 0.24);
            --shadow-glow: 0 0 20px rgba(183, 240, 77, 0.35);
            --spacing-section: 96px;
            --font-main: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background-color: var(--bg-deep);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

        a:focus-visible, button:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
            background: none;
        }

        .grid-container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media screen and (max-width: 640px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Dock 导航 ===== */
        .dock-nav {
            position: fixed;
            top: 14px;
            left: 50%;
            transform: translateX(-50%);
            width: min(1200px, 92vw);
            height: 64px;
            background: rgba(10, 20, 40, 0.65);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 16px;
            z-index: 1000;
            display: flex;
            align-items: center;
            padding: 0 20px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
            transition: height 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
        }

        .dock-nav.scrolled {
            height: 56px;
            background: rgba(8, 16, 34, 0.85);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
        }

        .dock-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .dock-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-lime-deep));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
            color: #07101F;
            box-shadow: 0 4px 12px rgba(183, 240, 77, 0.3);
        }

        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo-tag {
            display: inline-block;
            background: rgba(183, 240, 77, 0.15);
            border: 1px solid rgba(183, 240, 77, 0.35);
            color: var(--accent-lime);
            font-size: 11px;
            font-weight: 600;
            border-radius: 999px;
            padding: 2px 8px;
            margin-left: 6px;
            vertical-align: middle;
            letter-spacing: 0.03em;
        }

        .dock-links {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: 40px;
        }

        .dock-link {
            padding: 8px 18px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            position: relative;
            transition: all 0.25s ease;
        }

        .dock-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.04);
        }

        .dock-link.active {
            color: var(--accent-cyan);
            background: rgba(24, 216, 231, 0.10);
            border: 1px solid rgba(24, 216, 231, 0.25);
        }

        .dock-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: auto;
        }

        .dock-search {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-sub);
            transition: all 0.25s ease;
        }

        .dock-search:hover {
            color: var(--accent-cyan);
            border-color: rgba(24, 216, 231, 0.4);
            background: rgba(24, 216, 231, 0.08);
        }

        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }

        .hamburger span {
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 移动端全屏菜单 */
        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(7, 13, 29, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 24px;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }

        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
        }

        .mobile-link {
            font-size: 24px;
            font-weight: 600;
            color: var(--text-main);
            padding: 12px 24px;
            border-radius: 12px;
            transition: all 0.25s ease;
        }

        .mobile-link:hover {
            color: var(--accent-lime);
            background: rgba(183, 240, 77, 0.08);
        }

        .mobile-link.active {
            color: var(--accent-cyan);
            text-decoration: underline;
            text-decoration-color: var(--accent-cyan);
            text-underline-offset: 8px;
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-lime-deep));
            color: #07101F;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: all 0.3s ease;
            text-decoration: none;
        }

        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(183, 240, 77, 0.55);
            transform: translateY(-2px);
            color: #07101F;
        }

        .btn-primary:active {
            transform: translateY(0px);
            box-shadow: 0 0 12px rgba(183, 240, 77, 0.3);
        }

        .btn-primary.btn-sm {
            padding: 9px 20px;
            font-size: 13px;
            border-radius: 8px;
        }

        .btn-primary.btn-lg {
            padding: 15px 36px;
            font-size: 16px;
            border-radius: 12px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 10px;
            background: rgba(16, 30, 58, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
        }

        .btn-secondary:hover {
            background: rgba(24, 216, 231, 0.12);
            border-color: rgba(24, 216, 231, 0.4);
            color: var(--text-main);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0px);
        }

        .btn-secondary.btn-lg {
            padding: 15px 36px;
            font-size: 16px;
            border-radius: 12px;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-cyan);
            font-weight: 500;
            text-decoration: none;
            font-size: 15px;
            transition: all 0.25s ease;
        }

        .text-link:hover {
            color: #5CE0EC;
            gap: 10px;
        }

        .text-link .arrow {
            transition: transform 0.25s ease;
        }

        .text-link:hover .arrow {
            transform: translateX(3px);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            min-height: 720px;
            display: flex;
            align-items: center;
            background: var(--bg-deep);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 140px 0 80px;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -200px;
            left: -200px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(24, 216, 231, 0.12), transparent 60%);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -300px;
            right: -200px;
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(183, 240, 77, 0.08), transparent 60%);
            pointer-events: none;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 13, 29, 0.82) 0%, rgba(7, 13, 29, 0.65) 50%, rgba(7, 13, 29, 0.92) 100%);
            z-index: 1;
        }

        .hero-grid-pattern {
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            z-index: 2;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 3;
            max-width: 1200px;
        }

        .hero-content {
            max-width: 640px;
        }

        .hero-content h1 {
            font-size: 46px;
            line-height: 1.15;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }

        .hero-content h1 .highlight {
            color: var(--accent-cyan);
        }

        .hero-subtitle {
            font-size: 18px;
            line-height: 1.6;
            color: var(--text-sub);
            margin-bottom: 36px;
            max-width: 480px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-actions .btn-primary {
            animation: pulse-glow 2.5s ease-in-out infinite;
        }

        @keyframes pulse-glow {
            0%, 100% {
                box-shadow: 0 0 20px rgba(183, 240, 77, 0.35);
            }
            50% {
                box-shadow: 0 0 36px rgba(183, 240, 77, 0.55);
            }
        }

        .hero-stats {
            margin-top: 48px;
            display: flex;
            align-items: center;
            gap: 0;
            flex-wrap: wrap;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 28px;
            max-width: 600px;
        }

        .stat-item {
            padding: 0 28px;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
            flex: 1;
            min-width: 120px;
        }

        .stat-item:first-child {
            border-left: none;
            padding-left: 0;
        }

        .stat-num {
            display: block;
            font-size: 28px;
            font-weight: 700;
            color: var(--accent-lime);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .stat-label {
            display: block;
            font-size: 13px;
            color: var(--text-sub);
            margin-top: 4px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }

        .section-alt {
            background: var(--bg-raised);
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .section-lead {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 640px;
        }

        .section-label {
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--accent-cyan);
            margin-bottom: 12px;
            display: block;
        }

        /* ===== 卖点三连 ===== */
        .features-section {
            padding: var(--spacing-section) 0;
            background: var(--bg-raised);
        }

        .feature-card {
            height: 100%;
            background: rgba(13, 24, 46, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.35s ease;
            position: relative;
        }

        .feature-card:hover {
            border-color: rgba(24, 216, 231, 0.4);
            transform: translateY(-4px);
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.3);
        }

        .feature-main {
            display: flex;
            flex-direction: column;
            height: 100%;
            min-height: 420px;
        }

        .feature-main-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
        }

        .feature-main-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .feature-main:hover .feature-main-img img {
            transform: scale(1.03);
        }

        .feature-content {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .feature-content h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .feature-content p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.65;
            margin-bottom: 16px;
        }

        .feature-list {
            list-style: none;
            margin: 0 0 20px;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .feature-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-sub);
        }

        .feature-list li::before {
            content: '✓';
            color: var(--accent-lime);
            font-weight: 700;
            font-size: 14px;
        }

        .feature-small {
            padding: 24px;
            min-height: 200px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .feature-small + .feature-small {
            margin-top: 24px;
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(183, 240, 77, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent-lime);
            margin-bottom: 16px;
        }

        .feature-small h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .feature-small p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* ===== 场景演示 ===== */
        .scenarios-section {
            padding: var(--spacing-section) 0;
            background: var(--bg-deep);
        }

        .scenario-row {
            margin-bottom: 80px;
            align-items: center;
        }

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

        .scenario-image-wrap {
            position: relative;
            padding: 12px;
        }

        .scenario-image-wrap::before {
            content: '';
            position: absolute;
            top: -8px;
            left: -8px;
            width: calc(50% + 16px);
            height: calc(50% + 16px);
            border-top: 2px solid var(--accent-lime);
            border-left: 2px solid var(--accent-lime);
            border-radius: var(--radius-lg);
            opacity: 0.5;
            z-index: 1;
        }

        .scenario-image-wrap::after {
            content: '';
            position: absolute;
            bottom: -8px;
            right: -8px;
            width: calc(50% + 16px);
            height: calc(50% + 16px);
            border-bottom: 2px solid var(--accent-cyan);
            border-right: 2px solid var(--accent-cyan);
            border-radius: var(--radius-lg);
            opacity: 0.5;
            z-index: 1;
        }

        .scenario-image-wrap img {
            border-radius: var(--radius-lg);
            aspect-ratio: 16 / 10;
            object-fit: cover;
            width: 100%;
            position: relative;
            z-index: 2;
            box-shadow: var(--shadow-base);
        }

        .scenario-text {
            padding: 24px 0;
        }

        .step-num {
            font-family: 'Manrope', 'Inter', monospace;
            font-size: 20px;
            font-weight: 700;
            color: var(--accent-lime);
            display: block;
            margin-bottom: 12px;
            letter-spacing: 0.05em;
        }

        .scenario-text h3 {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .scenario-text p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 18px;
        }

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

        .tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(24, 216, 231, 0.08);
            border: 1px solid rgba(24, 216, 231, 0.2);
            font-size: 12px;
            font-weight: 500;
            color: var(--accent-cyan);
        }

        /* ===== 社会认同 ===== */
        .testimonial-section {
            padding: 80px 0;
            background: var(--bg-raised);
        }

        .partner-logos {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 48px;
            margin-top: 32px;
            margin-bottom: 48px;
        }

        .partner-logo {
            font-size: 18px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.35);
            letter-spacing: 0.02em;
            filter: grayscale(1);
            opacity: 0.6;
            transition: all 0.3s ease;
            cursor: default;
            white-space: nowrap;
        }

        .partner-logo:hover {
            filter: grayscale(0);
            color: var(--text-main);
            opacity: 1;
            transform: translateY(-2px);
        }

        .testimonial-card {
            background: rgba(16, 30, 58, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 32px;
            max-width: 720px;
            margin: 0 auto;
            position: relative;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .testimonial-card::before {
            content: '\201C';
            position: absolute;
            top: -10px;
            left: 24px;
            font-size: 64px;
            color: var(--accent-cyan);
            font-family: Georgia, serif;
            line-height: 1;
        }

        .testimonial-text {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-sub);
            font-style: normal;
            margin-bottom: 16px;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: #07101F;
        }

        .testimonial-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }

        .testimonial-role {
            font-size: 13px;
            color: var(--text-weak);
        }

        /* ===== 资讯动态 ===== */
        .news-section {
            padding: var(--spacing-section) 0;
            background: var(--bg-deep);
        }

        .news-section .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .news-card {
            display: block;
            background: rgba(13, 24, 46, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            overflow: hidden;
            height: 100%;
            transition: all 0.35s ease;
        }

        .news-card:hover {
            border-color: rgba(24, 216, 231, 0.4);
            transform: translateY(-4px);
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.35);
        }

        .news-media {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .news-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .news-card:hover .news-media img {
            transform: scale(1.05);
        }

        .news-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent-lime);
            color: #07101F;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 6px;
            z-index: 2;
        }

        .news-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .news-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }

        .news-body p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 12px;
            color: var(--text-weak);
            margin-top: auto;
        }

        .news-meta .arrow-circle {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--text-sub);
            transition: all 0.25s ease;
        }

        .news-card:hover .news-meta .arrow-circle {
            background: var(--accent-lime);
            color: #07101F;
            transform: translateX(2px);
        }

        .empty-state {
            border: 1px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 60px 24px;
            text-align: center;
            color: var(--text-sub);
            background: rgba(16, 30, 58, 0.3);
        }

        .empty-state .empty-icon {
            font-size: 40px;
            color: var(--text-weak);
            margin-bottom: 16px;
        }

        .empty-state p {
            font-size: 15px;
            margin-bottom: 16px;
            color: var(--text-sub);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--spacing-section) 0;
            background: var(--bg-deep);
        }

        .faq-intro {
            padding-right: 40px;
        }

        .faq-intro h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .faq-intro p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .faq-intro .text-link {
            font-size: 14px;
        }

        .accordion {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .accordion-item {
            background: rgba(16, 30, 58, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .accordion-item.active {
            border-color: rgba(24, 216, 231, 0.3);
        }

        .accordion-header {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: transparent;
            border: none;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            transition: color 0.3s ease;
            min-height: 56px;
        }

        .accordion-header:hover {
            color: var(--accent-cyan);
        }

        .accordion-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            font-size: 16px;
            color: var(--accent-cyan);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .accordion-item.active .accordion-icon {
            transform: rotate(45deg);
            background: rgba(183, 240, 77, 0.15);
            color: var(--accent-lime);
        }

        .accordion-body {
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, opacity 0.3s ease;
        }

        .accordion-item.active .accordion-body {
            max-height: 300px;
            opacity: 1;
        }

        .accordion-body-inner {
            padding: 0 24px 20px;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            padding: var(--spacing-section) 0;
            background: var(--bg-raised);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(183, 240, 77, 0.12), transparent 60%);
            pointer-events: none;
        }

        .cta-card {
            background: rgba(13, 24, 46, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }

        .cta-card h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .cta-card p {
            color: var(--text-sub);
            font-size: 15px;
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0A1220;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 100px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .logo-text {
            font-size: 20px;
        }

        .footer-desc {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.6;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

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

        .footer-col ul a {
            color: var(--text-sub);
            font-size: 14px;
            transition: color 0.2s ease;
        }

        .footer-col ul a:hover {
            color: var(--accent-cyan);
        }

        .footer-contact p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact p i {
            color: var(--accent-cyan);
            width: 16px;
            font-size: 14px;
        }

        .footer-bottom {
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-weak);
            margin: 0;
        }

        .footer-domain {
            font-size: 13px;
            color: var(--text-weak);
            font-family: monospace;
        }

        /* ===== 底部固定转化条 ===== */
        .floating-cta {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%) translateY(100px);
            width: min(900px, calc(100vw - 40px));
            height: 64px;
            background: rgba(10, 20, 40, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
            z-index: 900;
            opacity: 0;
            transition: transform 0.4s ease, opacity 0.4s ease;
        }

        .floating-cta.visible {
            transform: translateX(-50%) translateY(0);
            opacity: 1;
        }

        .floating-cta.hidden {
            transform: translateX(-50%) translateY(100px);
            opacity: 0;
        }

        .floating-cta p {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            margin: 0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1024px) {
            :root {
                --spacing-section: 72px;
            }

            .dock-links {
                margin-left: 16px;
            }

            .dock-link {
                padding: 8px 14px;
                font-size: 14px;
            }

            .feature-main {
                min-height: 380px;
            }

            .hero-content h1 {
                font-size: 40px;
            }
        }

        @media screen and (max-width: 768px) {
            :root {
                --spacing-section: 64px;
            }

            .dock-links {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .dock-search {
                display: none;
            }

            .dock-actions .btn-primary {
                display: none;
            }

            .hero-content h1 {
                font-size: 34px;
            }

            .hero-subtitle {
                font-size: 16px;
            }

            .hero-stats {
                gap: 16px;
            }

            .stat-item {
                padding: 0 16px;
                min-width: 100px;
            }

            .stat-num {
                font-size: 22px;
            }

            .scenario-row {
                margin-bottom: 56px;
            }

            .scenario-image-wrap::before,
            .scenario-image-wrap::after {
                display: none;
            }

            .cta-card {
                padding: 40px 24px;
            }
        }

        @media screen and (max-width: 640px) {
            :root {
                --spacing-section: 48px;
            }

            .dock-nav {
                height: 56px;
                top: 10px;
                border-radius: 14px;
                padding: 0 16px;
            }

            .dock-logo .logo-text {
                font-size: 15px;
            }

            .logo-mark {
                width: 34px;
                height: 34px;
                font-size: 13px;
                border-radius: 9px;
            }

            .hero {
                padding: 120px 0 60px;
                min-height: auto;
            }

            .hero-content h1 {
                font-size: 30px;
                line-height: 1.2;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                padding: 13px 24px;
            }

            .hero-stats {
                margin-top: 36px;
                gap: 12px;
                padding-top: 20px;
            }

            .stat-item {
                padding: 0 10px;
                min-width: 80px;
                flex: 1 1 40%;
            }

            .stat-item:first-child {
                padding-left: 0;
            }

            .stat-num {
                font-size: 20px;
            }

            .stat-label {
                font-size: 12px;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .feature-main {
                min-height: auto;
            }

            .feature-content {
                padding: 20px;
            }

            .scenario-text {
                padding: 16px 0;
            }

            .scenario-text h3 {
                font-size: 22px;
            }

            .partner-logos {
                gap: 24px;
            }

            .partner-logo {
                font-size: 14px;
            }

            .testimonial-card {
                padding: 24px 20px;
            }

            .news-card {
                margin-bottom: 16px;
            }

            .news-section .section-header {
                align-items: center;
            }

            .faq-intro {
                padding-right: 0;
                margin-bottom: 32px;
            }

            .accordion-header {
                padding: 16px 18px;
                font-size: 14px;
            }

            .cta-card {
                padding: 32px 20px;
            }

            .cta-card h2 {
                font-size: 24px;
            }

            .floating-cta {
                width: calc(100vw - 32px);
                height: 56px;
                bottom: 12px;
                padding: 0 16px;
            }

            .floating-cta p {
                font-size: 13px;
                max-width: 60%;
            }

            .floating-cta .btn-primary {
                padding: 8px 16px;
                font-size: 12px;
            }

            .site-footer {
                padding: 48px 0 80px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* 动效减弱 */
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: article */
:root {
            --bg-deep: #070D1D;
            --bg-rise: #0C1730;
            --glass-bg: rgba(16, 30, 58, 0.55);
            --glass-border: rgba(255, 255, 255, 0.12);
            --accent: #18D8E7;
            --accent-rgb: 24, 216, 231;
            --action: #B7F04D;
            --action-dark: #7DDC3A;
            --action-rgb: 183, 240, 77;
            --warm: #FFB45C;
            --text-main: #F2F7FF;
            --text-sub: #9FB0CC;
            --text-weak: #5E6F8E;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.24);
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'Manrope', 'Inter', 'Segoe UI', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background-color: var(--bg-deep);
            -webkit-font-smoothing: antialiased;
            padding-top: 90px;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color .25s ease;
        }
        a:hover {
            color: #6FE8F2;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            border: none;
            background: none;
            outline: none;
        }
        ul,
        ol {
            list-style-position: inside;
        }
        .grid-container {
            max-width: 1200px;
        }

        /* ===== Dock 导航 ===== */
        .dock-nav {
            position: fixed;
            top: 14px;
            left: 50%;
            transform: translateX(-50%);
            width: min(1200px, 92vw);
            height: 64px;
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            background: rgba(16, 30, 58, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--glass-border);
            border-radius: 16px;
            box-shadow: var(--shadow);
            transition: height .3s ease, background .3s ease, box-shadow .3s ease;
        }
        .dock-nav.scrolled {
            height: 56px;
            background: rgba(16, 30, 58, 0.88);
            box-shadow: 0 10px 32px rgba(0, 0, 0, 0.4);
        }
        .dock-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            height: 100%;
        }
        .dock-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--action) 0%, var(--action-dark) 100%);
            color: #07101F;
            font-weight: 800;
            font-size: 13px;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-num);
            box-shadow: 0 0 18px rgba(var(--action-rgb), 0.25);
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .logo-tag {
            font-size: 11px;
            font-weight: 600;
            color: #0A1220;
            background: linear-gradient(135deg, var(--action), var(--action-dark));
            padding: 3px 8px;
            border-radius: 999px;
            letter-spacing: 1px;
            line-height: 1.4;
        }
        .dock-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .dock-link {
            padding: 9px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 10px;
            transition: background .25s, color .25s, border-color .25s;
            border: 1px solid transparent;
            position: relative;
        }
        .dock-link:hover {
            color: var(--text-main);
            background: rgba(var(--accent-rgb), 0.08);
        }
        .dock-link::after {
            content: '';
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 4px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--action), var(--accent));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s ease;
        }
        .dock-link:hover::after {
            transform: scaleX(1);
        }
        .dock-link.active {
            color: var(--text-main);
            background: rgba(var(--accent-rgb), 0.1);
            border-color: rgba(var(--accent-rgb), 0.35);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
        }
        .dock-link.active::after {
            transform: scaleX(1);
        }
        .dock-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--action) 0%, var(--action-dark) 100%);
            color: #07101F;
            font-weight: 700;
            font-size: 15px;
            padding: 10px 22px;
            border-radius: 10px;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(var(--action-rgb), 0.35);
            transition: transform .25s ease, box-shadow .25s ease, opacity .25s ease;
            border: none;
        }
        .btn-primary:hover {
            color: #07101F;
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(var(--action-rgb), 0.55);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(var(--action-rgb), 0.25);
        }
        .btn-primary.btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 9px;
        }
        .btn-primary.btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }
        .dock-search {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--glass-border);
            color: var(--text-main);
            font-size: 15px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background .25s, border-color .25s;
        }
        .dock-search:hover {
            background: rgba(var(--accent-rgb), 0.14);
            border-color: rgba(var(--accent-rgb), 0.5);
        }
        .hamburger {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--glass-border);
            cursor: pointer;
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            transition: background .25s;
        }
        .hamburger span {
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: transform .3s ease, opacity .3s ease;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 移动端菜单 */
        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(7, 13, 29, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            visibility: hidden;
            transition: opacity .35s ease, visibility .35s ease;
        }
        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-menu a {
            font-size: 24px;
            font-weight: 600;
            color: var(--text-main);
            padding: 8px 16px;
        }
        .mobile-menu a:hover {
            color: var(--accent);
        }
        .mobile-menu .mm-cta {
            margin-top: 12px;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-weak);
            margin: 28px 0 22px;
            max-width: 840px;
            margin-left: auto;
            margin-right: auto;
        }
        .breadcrumb a {
            color: var(--text-sub);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: var(--text-weak);
            opacity: 0.7;
        }
        .breadcrumb .current {
            color: var(--text-sub);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 220px;
        }

        /* ===== 文章头部 ===== */
        .article-header {
            max-width: 840px;
            margin: 0 auto 24px;
        }
        .article-header h1 {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.5px;
            margin-bottom: 18px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: 14px;
            color: var(--text-sub);
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-item i {
            color: var(--accent);
            font-size: 13px;
        }
        .badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--action), var(--action-dark));
            color: #0A1220;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 6px;
            letter-spacing: 0.3px;
        }

        /* ===== 文章配图 ===== */
        .article-cover {
            max-width: 840px;
            margin: 0 auto 36px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            aspect-ratio: 16 / 9;
            background: var(--bg-rise);
            box-shadow: var(--shadow);
            border: 1px solid var(--glass-border);
        }
        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .article-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(7, 13, 29, 0.35));
            pointer-events: none;
        }

        /* ===== 正文排版 ===== */
        .article-body {
            max-width: 840px;
            margin: 0 auto 40px;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body h2 {
            font-size: 28px;
            font-weight: 700;
            margin: 40px 0 18px;
            padding-left: 14px;
            border-left: 4px solid var(--action);
            line-height: 1.35;
            color: var(--text-main);
        }
        .article-body h3 {
            font-size: 22px;
            font-weight: 600;
            margin: 30px 0 14px;
            color: var(--text-main);
        }
        .article-body h4 {
            font-size: 18px;
            font-weight: 600;
            margin: 24px 0 12px;
            color: var(--text-main);
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 20px 20px;
            padding: 0;
        }
        .article-body li {
            margin-bottom: 8px;
            line-height: 1.75;
        }
        .article-body li::marker {
            color: var(--accent);
        }
        .article-body blockquote {
            border-left: 3px solid var(--accent);
            background: rgba(var(--accent-rgb), 0.06);
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            color: var(--text-sub);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
        }
        .article-body figure {
            margin: 24px 0;
        }
        .article-body figcaption {
            color: var(--text-weak);
            font-size: 13px;
            text-align: center;
            margin-top: 8px;
        }
        .article-body code {
            background: #0A1220;
            border: 1px solid var(--glass-border);
            padding: 3px 8px;
            border-radius: 6px;
            font-size: 14px;
            color: var(--action);
            font-family: 'JetBrains Mono', Consolas, monospace;
        }
        .article-body pre {
            background: #0A1220;
            border: 1px solid var(--glass-border);
            border-radius: 12px;
            padding: 20px;
            overflow-x: auto;
            margin: 24px 0;
            line-height: 1.6;
        }
        .article-body pre code {
            background: none;
            border: none;
            padding: 0;
            color: #E6EDF7;
            font-size: 14px;
        }
        .article-body a {
            border-bottom: 1px solid rgba(var(--accent-rgb), 0.4);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: 12px;
            overflow: hidden;
        }
        .article-body th,
        .article-body td {
            border: 1px solid var(--glass-border);
            padding: 12px 16px;
            text-align: left;
        }
        .article-body th {
            background: var(--bg-rise);
            color: var(--text-main);
            font-weight: 600;
        }
        .article-body td {
            color: var(--text-sub);
        }

        /* ===== 文章结尾 ===== */
        .article-end {
            max-width: 840px;
            margin: 0 auto 40px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            display: inline-block;
            padding: 6px 14px;
            font-size: 13px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            color: var(--text-sub);
            transition: border-color .25s, background .25s;
            font-weight: 500;
        }
        .tag:hover {
            border-color: rgba(var(--action-rgb), 0.5);
            background: rgba(var(--action-rgb), 0.08);
            color: var(--text-main);
        }
        .article-share {
            display: flex;
            gap: 10px;
        }
        .share-btn {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            color: var(--text-sub);
            font-size: 16px;
            cursor: pointer;
            transition: background .25s, border-color .25s, color .25s, transform .25s;
        }
        .share-btn:hover {
            background: rgba(var(--action-rgb), 0.12);
            border-color: rgba(var(--action-rgb), 0.45);
            color: var(--action);
            transform: translateY(-2px);
        }
        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--accent);
            font-weight: 500;
            transition: gap .25s ease;
        }
        .back-link:hover {
            gap: 12px;
        }

        /* ===== 空状态 ===== */
        .article-empty {
            max-width: 600px;
            margin: 120px auto;
            text-align: center;
            padding: 60px 40px;
            background: var(--glass-bg);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px dashed rgba(var(--accent-rgb), 0.4);
            border-radius: var(--radius-lg);
        }
        .empty-icon {
            font-size: 48px;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .article-empty p {
            color: var(--text-sub);
            font-size: 16px;
            margin-bottom: 24px;
        }

        /* ===== 相关阅读 ===== */
        .related-section {
            padding: 72px 0;
            background: var(--bg-rise);
            position: relative;
            overflow: hidden;
        }
        .related-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: rgba(var(--accent-rgb), 0.07);
            border-radius: 50%;
            filter: blur(80px);
            pointer-events: none;
        }
        .related-section .grid-container {
            position: relative;
            z-index: 1;
        }
        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 36px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
        }
        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--accent);
            transition: gap .25s ease;
        }
        .text-link:hover {
            gap: 12px;
            color: #6FE8F2;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            display: block;
            background: var(--glass-bg);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 14px 40px rgba(0, 0, 0, 0.35);
            border-color: rgba(var(--accent-rgb), 0.4);
        }
        .related-cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
            background: var(--bg-deep);
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .related-card:hover .related-cover img {
            transform: scale(1.03);
        }
        .related-cover .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }
        .related-info {
            padding: 20px;
        }
        .related-info h3 {
            font-size: 18px;
            line-height: 1.4;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-meta {
            font-size: 13px;
            color: var(--text-weak);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 72px 0;
            background: var(--bg-deep);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            bottom: -160px;
            left: 50%;
            transform: translateX(-50%);
            width: 700px;
            height: 320px;
            background: rgba(var(--action-rgb), 0.08);
            border-radius: 50%;
            filter: blur(90px);
            pointer-events: none;
        }
        .cta-box {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            background: linear-gradient(135deg, rgba(16, 30, 58, 0.85), rgba(12, 23, 48, 0.9));
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 44px 48px;
            box-shadow: var(--shadow);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }
        .cta-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .cta-content p {
            color: var(--text-sub);
            font-size: 15px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0A1220;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 60px 0 28px;
        }
        .site-footer .grid-x {
            margin-bottom: 40px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand .logo-mark {
            width: 40px;
            height: 40px;
        }
        .footer-brand .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-brand .logo-tag {
            font-size: 11px;
            font-weight: 600;
            color: #0A1220;
            background: linear-gradient(135deg, var(--action), var(--action-dark));
            padding: 3px 8px;
            border-radius: 999px;
            letter-spacing: 1px;
        }
        .footer-desc {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .site-footer ul {
            list-style: none;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul a {
            color: var(--text-sub);
            font-size: 14px;
            transition: color .2s ease;
        }
        .site-footer ul a:hover {
            color: var(--accent);
        }
        .footer-contact p {
            color: var(--text-sub);
            font-size: 14px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact i {
            color: var(--accent);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom p {
            color: var(--text-weak);
            font-size: 13px;
            margin: 0;
        }
        .footer-domain {
            color: var(--text-weak);
            font-size: 13px;
            font-family: var(--font-num);
            letter-spacing: 0.5px;
        }

        /* ===== 焦点可见 ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-box {
                flex-direction: column;
                text-align: center;
                padding: 36px 28px;
            }
        }
        @media (max-width: 768px) {
            .dock-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .dock-search {
                display: none;
            }
            .article-header h1 {
                font-size: 28px;
            }
            .article-body h2 {
                font-size: 23px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 28px 22px;
            }
            .site-footer {
                padding: 48px 0 24px;
            }
        }
        @media (max-width: 640px) {
            body {
                padding-top: 76px;
            }
            .dock-nav {
                top: 8px;
                width: 96vw;
                height: 58px;
                padding: 0 14px;
            }
            .dock-nav.scrolled {
                height: 52px;
            }
            .logo-text {
                font-size: 16px;
            }
            .logo-tag {
                font-size: 10px;
                padding: 2px 6px;
            }
            .btn-primary.btn-sm {
                padding: 7px 12px;
                font-size: 13px;
            }
            .article-header h1 {
                font-size: 26px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .article-end {
                flex-direction: column;
                align-items: flex-start;
            }
            .related-section {
                padding: 48px 0;
            }
            .cta-section {
                padding: 48px 0;
            }
            .footer-brand .logo-text {
                font-size: 16px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }

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

/* roulang page: category1 */
:root {
            --bg-deep: #070D1D;
            --bg-raised: #0C1730;
            --glass-bg: rgba(16, 30, 58, 0.55);
            --glass-border: rgba(255, 255, 255, 0.12);
            --accent-cyan: #18D8E7;
            --accent-lime: #B7F04D;
            --accent-lime-soft: rgba(183, 240, 77, 0.15);
            --accent-warm: #FFB45C;
            --text-main: #F2F7FF;
            --text-secondary: #9FB0CC;
            --text-muted: #5E6F8E;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-base: 0 8px 24px rgba(0, 0, 0, 0.24);
            --space-section: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg-deep);
            color: var(--text-main);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s;
        }

        a:hover {
            color: var(--accent-lime);
        }

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

        button, input {
            font-family: inherit;
            font-size: inherit;
        }

        .grid-container {
            max-width: 1200px;
        }

        .site-main {
            padding-top: 90px;
        }

        /* ---------- Dock Nav ---------- */
        .dock-nav {
            position: fixed;
            top: 14px;
            left: 50%;
            transform: translateX(-50%);
            width: min(1200px, 92vw);
            height: 64px;
            background: rgba(16, 30, 58, 0.55);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-base), inset 0 1px 0 rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            z-index: 1000;
            transition: height 0.3s, background 0.3s, box-shadow 0.3s;
        }

        .dock-nav.scrolled {
            height: 56px;
            background: rgba(16, 30, 58, 0.85);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.08);
        }

        .dock-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            padding: 0 24px;
        }

        .dock-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-lime), #7DDC3A);
            color: #07101F;
            font-weight: 800;
            font-size: 13px;
            letter-spacing: 0.5px;
            font-family: "Inter", sans-serif;
            box-shadow: 0 0 20px rgba(183, 240, 77, 0.25);
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .logo-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            color: #07101F;
            background: var(--accent-lime);
            padding: 3px 8px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }

        .dock-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .dock-link {
            display: inline-flex;
            align-items: center;
            height: 36px;
            padding: 0 18px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.25s;
            border: 1px solid transparent;
        }

        .dock-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }

        .dock-link.active {
            color: var(--text-main);
            background: rgba(24, 216, 231, 0.12);
            border: 1px solid rgba(24, 216, 231, 0.35);
        }

        .dock-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: none;
            cursor: pointer;
            font-weight: 700;
            border-radius: 10px;
            background: linear-gradient(135deg, #B7F04D, #7DDC3A);
            color: #07101F;
            padding: 12px 24px;
            font-size: 15px;
            box-shadow: 0 0 20px rgba(183, 240, 77, 0.35);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(183, 240, 77, 0.55);
            transform: translateY(-2px);
            color: #07101F;
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 18px rgba(183, 240, 77, 0.4);
        }

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

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
            border-radius: 10px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--glass-border);
            background: rgba(16, 30, 58, 0.55);
            backdrop-filter: blur(14px);
            color: var(--text-main);
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-secondary:hover {
            background: rgba(24, 216, 231, 0.12);
            border-color: rgba(24, 216, 231, 0.5);
            color: var(--text-main);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }

        .btn-secondary:active {
            transform: translateY(1px);
        }

        .dock-search {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.25s;
            flex-shrink: 0;
        }

        .dock-search:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(24, 216, 231, 0.1);
        }

        .dock-search i {
            font-size: 15px;
        }

        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            flex-shrink: 0;
        }

        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 100vh;
            background: rgba(7, 13, 29, 0.96);
            backdrop-filter: blur(24px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .mobile-menu.open {
            display: flex;
            opacity: 1;
            visibility: visible;
        }

        .mobile-menu a {
            color: var(--text-main);
            font-size: 24px;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: 12px;
            transition: all 0.25s;
        }

        .mobile-menu a:hover, .mobile-menu a.active {
            color: var(--accent-lime);
            background: rgba(183, 240, 77, 0.08);
        }

        /* ---------- Search Popover ---------- */
        .search-pop {
            position: absolute;
            top: 70px;
            right: 20px;
            width: 240px;
            background: rgba(16, 30, 58, 0.92);
            backdrop-filter: blur(16px);
            border: 1px solid var(--glass-border);
            border-radius: 12px;
            padding: 12px;
            box-shadow: var(--shadow-base);
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all 0.3s ease;
        }

        .search-pop.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .search-pop input {
            width: 100%;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--glass-border);
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
            padding: 0 14px;
            font-size: 14px;
            outline: none;
            transition: all 0.25s;
        }

        .search-pop input:focus {
            border-color: var(--accent-lime);
            box-shadow: 0 0 0 3px rgba(183, 240, 77, 0.15);
        }

        /* ---------- Category Hero ---------- */
        .category-hero {
            position: relative;
            padding: 80px 0 72px;
            background:
                url('/assets/images/backpic/back-1.webp') no-repeat center/cover,
                var(--bg-deep);
            min-height: 580px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            top: -200px;
            left: -200px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(24, 216, 231, 0.25), transparent 70%);
            z-index: 0;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            bottom: -250px;
            right: -150px;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(183, 240, 77, 0.18), transparent 70%);
            z-index: 0;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(183, 240, 77, 0.15);
            border: 1px solid rgba(183, 240, 77, 0.3);
            color: var(--accent-lime);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.15;
            color: var(--text-main);
            margin: 0 0 18px;
            letter-spacing: 0.5px;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.7;
            margin-bottom: 36px;
        }

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

        /* ---------- Stat Card ---------- */
        .stat-card {
            background: rgba(16, 30, 58, 0.55);
            backdrop-filter: blur(14px);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            padding: 32px 28px;
            box-shadow: var(--shadow-base), inset 0 1px 0 rgba(255, 255, 255, 0.08);
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .stat-row {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            padding-bottom: 14px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .stat-row:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .stat-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent-lime);
            font-family: "Inter", sans-serif;
            line-height: 1;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* ---------- Section Common ---------- */
        .section-pad {
            padding: var(--space-section) 0;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .section-head .section-intro {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 600px;
        }

        .bg-raised-section {
            background: var(--bg-raised);
        }

        /* ---------- Features / Selling Points ---------- */
        .features-area {
            padding: var(--space-section) 0;
        }

        .feature-card-large {
            background: rgba(12, 23, 48, 0.7);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            overflow: hidden;
            transition: all 0.35s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .feature-card-large:hover {
            transform: translateY(-4px);
            border-color: rgba(24, 216, 231, 0.4);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.08);
        }

        .feature-large-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: 20px 20px 0 0;
        }

        .feature-large-content {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .feature-large-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .feature-large-content p {
            color: var(--text-secondary);
            font-size: 15px;
            margin-bottom: 16px;
        }

        .feature-points {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .feature-points li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 14px;
        }

        .feature-points li i {
            color: var(--accent-lime);
            font-size: 13px;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(183, 240, 77, 0.12);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .feature-link {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-cyan);
            font-size: 14px;
            font-weight: 600;
            transition: all 0.25s;
        }

        .feature-link:hover {
            color: var(--accent-lime);
            gap: 12px;
        }

        .feature-card-stack {
            background: rgba(12, 23, 48, 0.7);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            padding: 24px;
            transition: all 0.35s ease;
            height: 100%;
            min-height: 150px;
            display: flex;
            flex-direction: column;
        }

        .feature-card-stack:hover {
            transform: translateY(-4px);
            border-color: rgba(24, 216, 231, 0.4);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
        }

        .feature-stack-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(24, 216, 231, 0.12);
            border: 1px solid rgba(24, 216, 231, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 20px;
            margin-bottom: 16px;
        }

        .feature-card-stack h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .feature-card-stack p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ---------- Course Catalog List ---------- */
        .course-catalog {
            padding: var(--space-section) 0;
            background: var(--bg-deep);
        }

        .course-list {
            display: flex;
            flex-direction: column;
        }

        .course-row {
            display: flex;
            align-items: flex-start;
            gap: 32px;
            padding: 32px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.3s ease;
            border-radius: 12px;
        }

        .course-row:last-child {
            border-bottom: none;
        }

        .course-row:hover {
            background: rgba(24, 216, 231, 0.05);
            transform: translateX(4px);
        }

        .course-date {
            flex-shrink: 0;
            text-align: center;
            min-width: 80px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
        }

        .course-date .day {
            font-size: 38px;
            font-weight: 700;
            color: var(--accent-cyan);
            font-family: "Inter", sans-serif;
            line-height: 1;
        }

        .course-date .month {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            letter-spacing: 1px;
        }

        .course-info {
            flex: 1;
        }

        .course-info h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            transition: color 0.25s;
        }

        .course-row:hover .course-info h3 {
            color: var(--accent-cyan);
        }

        .course-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
            max-width: 640px;
            margin-bottom: 12px;
        }

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

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 6px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
            color: var(--text-secondary);
            transition: all 0.25s;
        }

        .course-row:hover .tag {
            border-color: rgba(24, 216, 231, 0.3);
            color: var(--text-main);
        }

        /* ---------- Scenarios ---------- */
        .scenarios-section {
            padding: var(--space-section) 0;
            background: var(--bg-raised);
        }

        .scenario-row {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 72px;
        }

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

        .scenario-img-wrap {
            position: relative;
            flex: 1;
        }

        .scenario-img-wrap::before {
            content: "";
            position: absolute;
            top: -16px;
            left: -16px;
            width: 100%;
            height: 100%;
            border: 1px solid rgba(24, 216, 231, 0.3);
            border-radius: 20px;
            z-index: 0;
        }

        .scenario-img-wrap::after {
            content: "";
            position: absolute;
            bottom: -16px;
            right: -16px;
            width: 100%;
            height: 100%;
            border: 1px solid rgba(183, 240, 77, 0.2);
            border-radius: 20px;
            z-index: 0;
        }

        .scenario-img {
            position: relative;
            z-index: 1;
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: 20px;
            box-shadow: var(--shadow-base);
        }

        .scenario-text {
            flex: 1;
            padding: 0 20px;
        }

        .scenario-step {
            font-size: 16px;
            font-weight: 700;
            color: var(--accent-lime);
            font-family: "Inter", monospace;
            letter-spacing: 2px;
            margin-bottom: 14px;
            display: inline-block;
        }

        .scenario-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .scenario-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .scenario-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .scenario-row:nth-child(even) {
            flex-direction: row-reverse;
        }

        .scenario-row:nth-child(even) .scenario-img-wrap::before {
            border-color: rgba(183, 240, 77, 0.3);
        }

        .scenario-row:nth-child(even) .scenario-img-wrap::after {
            border-color: rgba(24, 216, 231, 0.2);
        }

        /* ---------- Process ---------- */
        .process-section {
            padding: var(--space-section) 0;
            background: var(--bg-deep);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .process-step {
            background: rgba(12, 23, 48, 0.6);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            padding: 32px 24px;
            position: relative;
            transition: all 0.35s ease;
            text-align: left;
        }

        .process-step:hover {
            transform: translateY(-4px);
            border-color: rgba(24, 216, 231, 0.4);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
        }

        .process-num {
            font-size: 42px;
            font-weight: 700;
            color: rgba(24, 216, 231, 0.25);
            font-family: "Inter", sans-serif;
            line-height: 1;
            margin-bottom: 16px;
            display: block;
        }

        .process-step h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ---------- FAQ ---------- */
        .faq-section {
            padding: var(--space-section) 0;
            background: var(--bg-deep);
        }

        .faq-heading {
            padding-right: 24px;
        }

        .faq-heading h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .faq-heading p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .faq-contact-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 15px;
            transition: all 0.25s;
        }

        .faq-contact-link:hover {
            color: var(--accent-lime);
            gap: 12px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: rgba(16, 30, 58, 0.4);
            border: 1px solid var(--glass-border);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item.active {
            border-color: rgba(24, 216, 231, 0.4);
            background: rgba(16, 30, 58, 0.7);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            min-height: 56px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            user-select: none;
            transition: all 0.3s;
        }

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

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-secondary);
            flex-shrink: 0;
            transition: all 0.35s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(183, 240, 77, 0.15);
            border-color: rgba(183, 240, 77, 0.4);
            color: var(--accent-lime);
        }

        .faq-answer {
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, opacity 0.35s ease;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            opacity: 1;
            padding: 0 24px 20px;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            padding: var(--space-section) 0;
            position: relative;
            background:
                url('/assets/images/backpic/back-2.webp') no-repeat center/cover,
                var(--bg-raised);
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(7, 13, 29, 0.85), rgba(7, 13, 29, 0.5));
            z-index: 1;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .cta-inner p {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }

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

        /* ---------- Float Bar ---------- */
        .float-bar {
            position: fixed;
            bottom: 20px;
            left: 20px;
            right: 20px;
            height: 64px;
            border-radius: 14px;
            background: rgba(16, 30, 58, 0.55);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow: var(--shadow-base), inset 0 1px 0 rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            opacity: 0;
            transform: translateY(80px);
            transition: all 0.4s ease;
            z-index: 990;
        }

        .float-bar.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .float-bar.hide {
            opacity: 0;
            transform: translateY(80px);
        }

        .float-bar-text {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
        }

        .site-footer {
            padding-bottom: 120px;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: #0A1220;
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding: 64px 0 110px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-secondary);
            max-width: 320px;
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 18px;
        }

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

        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: all 0.25s;
        }

        .footer-col ul li a:hover {
            color: var(--accent-lime);
            padding-left: 4px;
        }

        .footer-contact p {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-contact p i {
            color: var(--accent-cyan);
            width: 16px;
            text-align: center;
            flex-shrink: 0;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        .footer-domain {
            font-size: 13px;
            color: var(--text-muted);
            font-family: "Inter", monospace;
        }

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

        /* ---------- Responsive ---------- */
        @media (max-width: 1024px) {
            :root {
                --space-section: 72px;
            }

            .dock-links {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .category-hero {
                min-height: 500px;
            }

            .category-hero h1 {
                font-size: 40px;
            }

            .scenario-row {
                gap: 28px;
            }
        }

        @media (max-width: 640px) {
            :root {
                --space-section: 48px;
            }

            body {
                font-size: 15px;
            }

            .dock-nav {
                width: 96vw;
                height: 56px;
                top: 10px;
            }

            .dock-nav.scrolled {
                height: 52px;
            }

            .dock-inner {
                padding: 0 14px;
            }

            .logo-text {
                font-size: 16px;
            }

            .logo-tag {
                display: none;
            }

            .dock-search {
                display: none;
            }

            .btn-sm {
                padding: 7px 14px;
                font-size: 13px;
            }

            .category-hero {
                padding: 80px 0 48px;
                min-height: auto;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .hero-desc {
                font-size: 16px;
            }

            .hero-ctas {
                flex-direction: column;
                width: 100%;
            }

            .hero-ctas .btn-primary,
            .hero-ctas .btn-secondary {
                width: 100%;
            }

            .stat-card {
                margin-top: 32px;
                padding: 24px 20px;
            }

            .stat-num {
                font-size: 26px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .section-head .section-intro {
                font-size: 16px;
            }

            .feature-card-stack {
                min-height: auto;
            }

            .course-row {
                flex-direction: column;
                gap: 16px;
                padding: 24px 16px;
            }

            .course-date {
                min-width: auto;
                flex-direction: row;
                gap: 10px;
                align-items: baseline;
            }

            .course-date .day {
                font-size: 28px;
            }

            .scenario-row {
                flex-direction: column !important;
                gap: 32px;
                margin-bottom: 56px;
            }

            .scenario-img-wrap::before,
            .scenario-img-wrap::after {
                display: none;
            }

            .scenario-text {
                padding: 0;
            }

            .scenario-text h3 {
                font-size: 20px;
            }

            .process-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .process-step {
                padding: 24px 20px;
            }

            .faq-heading {
                padding-right: 0;
                margin-bottom: 32px;
            }

            .cta-inner h2 {
                font-size: 26px;
            }

            .cta-inner p {
                font-size: 16px;
            }

            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }

            .cta-buttons .btn-primary,
            .cta-buttons .btn-secondary {
                width: 100%;
            }

            .float-bar {
                height: 56px;
                bottom: 12px;
                left: 12px;
                right: 12px;
                padding: 0 16px;
            }

            .float-bar-text {
                font-size: 13px;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }

            .site-footer {
                padding-bottom: 90px;
            }

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

        @media (max-width: 520px) {
            .dock-logo .logo-mark {
                width: 34px;
                height: 34px;
                font-size: 11px;
            }

            .logo-text {
                font-size: 14px;
            }
        }

        .cell {
            flex: 0 0 auto;
        }

        .grid-margin-x > .cell {
            margin-bottom: 24px;
        }

        .grid-margin-x > .cell.large-8,
        .grid-margin-x > .cell.large-4 {
            margin-bottom: 0;
        }

        @media (max-width: 640px) {
            .grid-margin-x > .cell {
                margin-bottom: 24px;
            }
        }