/* roulang page: index */
:root {
            --primary: #00D4FF;
            --accent: #F5B841;
            --bg-main: #0B1526;
            --bg-deep: #060B14;
            --text-main: #E6EDF7;
            --text-body: #94A3B8;
            --text-weak: #64748B;
            --border-glass: rgba(255, 255, 255, 0.08);
            --bg-glass: rgba(255, 255, 255, 0.04);
            --radius-card: 16px;
            --shadow-primary: 0 0 24px rgba(0, 212, 255, 0.45);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background:
                radial-gradient(ellipse 80% 50% at 20% 0%, rgba(0, 212, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse 60% 40% at 85% 20%, rgba(245, 184, 65, 0.04) 0%, transparent 50%),
                linear-gradient(160deg, #0B1526 0%, #060B14 100%);
            color: var(--text-main);
            line-height: 1.75;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 56px 56px;
            mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, black 0%, transparent 100%);
        }

        .container {
            max-width: 80rem;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 640px) {
            .container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

        /* ===== 玻璃卡片 ===== */
        .glass-card {
            background: rgba(255, 255, 255, 0.04);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            transition: var(--transition-base);
        }

        .glass-card:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(255, 255, 255, 0.14);
            box-shadow: 0 8px 32px rgba(0, 212, 255, 0.12);
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: var(--primary);
            color: #08101F;
            font-weight: 600;
            padding: 0.75rem 1.75rem;
            border-radius: 999px;
            border: none;
            box-shadow: var(--shadow-primary);
            transition: var(--transition-base);
            cursor: pointer;
            font-size: 0.95rem;
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 0 32px rgba(0, 212, 255, 0.6);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #E6EDF7;
            font-weight: 500;
            padding: 0.75rem 1.75rem;
            border-radius: 999px;
            transition: var(--transition-base);
            cursor: pointer;
            font-size: 0.95rem;
        }

        .btn-secondary:hover {
            border-color: rgba(255, 255, 255, 0.4);
            background: rgba(255, 255, 255, 0.06);
        }

        .btn-secondary:active {
            transform: scale(0.97);
        }

        /* ===== 徽章 ===== */
        .badge {
            background: rgba(0, 212, 255, 0.1);
            color: var(--primary);
            border: 1px solid rgba(0, 212, 255, 0.2);
            border-radius: 999px;
            padding: 0.25rem 0.85rem;
            font-size: 0.75rem;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            white-space: nowrap;
        }

        .badge-accent {
            background: rgba(245, 184, 65, 0.1);
            color: var(--accent);
            border-color: rgba(245, 184, 65, 0.25);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            transition: var(--transition-base);
            background: transparent;
        }

        .site-header.scrolled {
            background: rgba(7, 13, 26, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .nav-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #0891b2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: #08101F;
            font-size: 1.1rem;
            box-shadow: 0 0 16px rgba(0, 212, 255, 0.3);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .nav-link {
            padding: 0.5rem 1rem;
            border-radius: 999px;
            font-size: 0.9rem;
            color: var(--text-body);
            font-weight: 500;
            transition: var(--transition-base);
            position: relative;
        }

        .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-link.active {
            color: var(--primary);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(0, 212, 255, 0.6);
        }

        .nav-cta {
            margin-left: 0.75rem;
        }

        /* 移动端导航 */
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            align-items: center;
            justify-content: center;
            color: var(--text-main);
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: rgba(7, 13, 26, 0.98);
            backdrop-filter: blur(24px);
            z-index: 200;
            padding: 2rem 1.75rem;
            transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            border-left: 1px solid rgba(255, 255, 255, 0.06);
            overflow-y: auto;
        }

        .mobile-drawer.open {
            right: 0;
        }

        .drawer-close {
            position: absolute;
            top: 1rem;
            right: 1rem;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }

        .drawer-link {
            display: block;
            padding: 0.75rem 0;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-body);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--transition-base);
        }

        .drawer-link:hover,
        .drawer-link.active {
            color: var(--primary);
        }

        .drawer-cta {
            margin-top: 1.5rem;
            width: 100%;
        }

        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 150;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition-base);
        }

        .drawer-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: 120px;
            padding-bottom: 80px;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            object-fit: cover;
            opacity: 0.25;
            mask-image: linear-gradient(to bottom, black 20%, transparent 100%);
        }

        .hero-glow {
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
            top: 20%;
            right: 0;
            z-index: -1;
            filter: blur(60px);
            pointer-events: none;
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .hero-title {
            font-size: clamp(2.5rem, 5vw, 3.75rem);
            font-weight: 700;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 1.5rem;
        }

        .hero-title .highlight {
            color: var(--primary);
            position: relative;
        }

        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 2rem;
            max-width: 34rem;
        }

        .hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .hero-visual {
            position: relative;
        }

        .hero-dashboard {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
            position: relative;
            overflow: hidden;
        }

        .hero-dashboard::before {
            content: '';
            position: absolute;
            top: -100px;
            left: -100px;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.2) 0%, transparent 70%);
            filter: blur(30px);
        }

        .hero-dashboard .db-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.5rem;
        }

        .hero-dashboard .db-title {
            font-size: 0.85rem;
            color: var(--text-body);
        }

        .hero-dashboard .db-value {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
        }

        .hero-dashboard .db-chart {
            height: 100px;
            display: flex;
            align-items: flex-end;
            gap: 0.5rem;
            margin-top: 1rem;
        }

        .db-bar {
            flex: 1;
            background: linear-gradient(to top, rgba(0, 212, 255, 0.3), rgba(0, 212, 255, 0.8));
            border-radius: 4px 4px 0 0;
            min-height: 20px;
            transition: var(--transition-base);
        }

        .db-bar:hover {
            background: linear-gradient(to top, rgba(0, 212, 255, 0.5), rgba(0, 212, 255, 1));
            box-shadow: 0 0 12px rgba(0, 212, 255, 0.3);
        }

        .db-floating-card {
            position: absolute;
            bottom: -1rem;
            right: 2rem;
            background: rgba(7, 13, 26, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            padding: 0.75rem 1.25rem;
            backdrop-filter: blur(12px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }

        .db-floating-card .fc-label {
            font-size: 0.7rem;
            color: var(--text-weak);
        }

        .db-floating-card .fc-value {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--accent);
        }

        /* ===== 信任指标 ===== */
        .metrics-section {
            padding: 2rem 0;
            position: relative;
            z-index: 5;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
        }

        .metric-item {
            text-align: center;
            padding: 1.5rem 1rem;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        .metric-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent);
            font-variant-numeric: tabular-nums;
            display: block;
        }

        .metric-label {
            font-size: 0.85rem;
            color: var(--text-body);
            margin-top: 0.5rem;
            display: block;
        }

        /* ===== 板块 ===== */
        .section {
            padding: 4.5rem 0;
            position: relative;
        }

        @media (min-width: 768px) {
            .section {
                padding: 6rem 0;
            }
        }

        .section-label {
            font-size: 0.8rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 0.75rem;
            font-weight: 600;
        }

        .section-title {
            font-size: 2rem;
            line-height: 1.25;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 2.25rem;
            }
        }

        .section-title::before {
            content: '// ';
            color: var(--primary);
            font-weight: 700;
        }

        .section-desc {
            color: var(--text-body);
            font-size: 1rem;
            max-width: 42rem;
            margin-bottom: 2.5rem;
        }

        /* ===== 功能分组 ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
            margin-bottom: 4rem;
        }

        .feature-row.reverse .feature-text {
            order: 2;
        }

        .feature-row.reverse .feature-visual {
            order: 1;
        }

        .feature-text .feature-num {
            font-size: 0.85rem;
            color: var(--accent);
            font-weight: 700;
            letter-spacing: 0.05em;
            margin-bottom: 0.5rem;
            display: block;
        }

        .feature-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .feature-text p {
            color: var(--text-body);
            font-size: 0.95rem;
            margin-bottom: 1.25rem;
            line-height: 1.8;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            display: grid;
            gap: 0.6rem;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            font-size: 0.9rem;
            color: var(--text-body);
        }

        .feature-list li i {
            color: var(--primary);
            font-style: normal;
            margin-top: 0.1rem;
        }

        .feature-visual {
            border-radius: 20px;
            overflow: hidden;
            position: relative;
            min-height: 280px;
        }

        .feature-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: transform 0.5s ease;
        }

        .feature-visual:hover img {
            transform: scale(1.02);
        }

        .feature-visual-tag {
            position: absolute;
            bottom: 1rem;
            left: 1rem;
            background: rgba(7, 13, 26, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            padding: 0.5rem 1rem;
            font-size: 0.8rem;
            color: var(--text-main);
        }

        /* ===== 使用场景 ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .scenario-card {
            border-radius: 20px;
            overflow: hidden;
            position: relative;
            min-height: 380px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition-base);
        }

        .scenario-card:hover {
            border-color: rgba(0, 212, 255, 0.4);
            box-shadow: 0 12px 40px rgba(0, 212, 255, 0.1);
            transform: translateY(-4px);
        }

        .scenario-card img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }

        .scenario-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(6, 11, 20, 0.9) 0%, rgba(6, 11, 20, 0.3) 50%, rgba(6, 11, 20, 0.1) 100%);
            z-index: 1;
        }

        .scenario-body {
            position: relative;
            z-index: 2;
            padding: 1.5rem;
        }

        .scenario-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .scenario-body p {
            font-size: 0.85rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ===== 成功案例 ===== */
        .case-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 2rem;
        }

        .case-link {
            color: var(--primary);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        .case-link:hover {
            text-decoration: underline;
        }

        .case-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.25rem;
        }

        .case-card {
            padding: 1.75rem;
            border-radius: var(--radius-card);
            cursor: default;
            transition: var(--transition-base);
        }

        .case-card:hover {
            border-color: rgba(0, 212, 255, 0.4);
            box-shadow: 0 12px 40px rgba(0, 212, 255, 0.08);
            transform: translateY(-2px);
        }

        .case-card .cc-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 1rem;
        }

        .case-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
        }

        .case-card .cc-desc {
            color: var(--text-body);
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
            line-height: 1.7;
        }

        .case-metric {
            display: flex;
            align-items: baseline;
            gap: 0.5rem;
        }

        .case-metric .cm-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent);
            font-variant-numeric: tabular-nums;
        }

        .case-metric .cm-label {
            font-size: 0.85rem;
            color: var(--text-weak);
        }

        /* ===== 价格 ===== */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            align-items: stretch;
        }

        .pricing-card {
            padding: 2rem 1.75rem;
            border-radius: var(--radius-card);
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .pricing-card.featured {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(0, 212, 255, 0.5);
            box-shadow: 0 0 40px rgba(0, 212, 255, 0.1);
            transform: scale(1.02);
        }

        .pricing-card.featured:hover {
            box-shadow: 0 0 50px rgba(0, 212, 255, 0.2);
            border-color: rgba(0, 212, 255, 0.7);
        }

        .pricing-recommend {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #08101F;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.25rem 1rem;
            border-radius: 999px;
            white-space: nowrap;
        }

        .pricing-name {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
        }

        .pricing-price {
            font-size: 2.5rem;
            font-weight: 700;
            margin: 1rem 0;
            font-variant-numeric: tabular-nums;
        }

        .pricing-price .per {
            font-size: 1rem;
            font-weight: 400;
            color: var(--text-weak);
        }

        .pricing-features {
            list-style: none;
            padding: 0;
            margin-bottom: 2rem;
            flex-grow: 1;
            display: grid;
            gap: 0.65rem;
        }

        .pricing-features li {
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: var(--text-body);
        }

        .pricing-features li i {
            color: var(--primary);
            font-style: normal;
        }

        .pricing-cta {
            width: 100%;
            justify-content: center;
        }

        /* ===== CMS 资讯 ===== */
        .cms-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }

        .cms-card {
            padding: 1.5rem;
            border-radius: var(--radius-card);
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            transition: var(--transition-base);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        .cms-card:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(0, 212, 255, 0.3);
            box-shadow: 0 8px 32px rgba(0, 212, 255, 0.08);
            transform: translateY(-2px);
        }

        .cms-card.featured-card {
            grid-column: span 2;
            padding: 2rem;
        }

        .cms-card .cms-category {
            font-size: 0.75rem;
            color: var(--primary);
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid rgba(0, 212, 255, 0.15);
            padding: 0.2rem 0.7rem;
            border-radius: 999px;
            display: inline-block;
            width: fit-content;
        }

        .cms-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            line-height: 1.4;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
        }

        .cms-card p {
            font-size: 0.85rem;
            color: var(--text-body);
            line-height: 1.7;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .cms-card .cms-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-weak);
            margin-top: auto;
        }

        .cms-card .cms-link {
            color: var(--primary);
            font-size: 0.85rem;
        }

        .empty-state {
            grid-column: 1 / -1;
            text-align: center;
            padding: 3rem 1rem;
            border-radius: var(--radius-card);
            background: rgba(255, 255, 255, 0.02);
            border: 1px dashed rgba(255, 255, 255, 0.1);
            color: var(--text-weak);
        }

        .empty-state .empty-icon {
            font-size: 2.5rem;
            margin-bottom: 0.75rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 50rem;
            margin: 0 auto;
            display: grid;
            gap: 0.85rem;
        }

        .faq-item {
            border-radius: 14px;
            overflow: hidden;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.25rem 1.5rem;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-main);
            transition: var(--transition-base);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
        }

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

        .faq-question .chevron {
            transition: transform 0.3s ease;
            color: var(--text-body);
            flex-shrink: 0;
            margin-left: 1rem;
        }

        .faq-item.active .chevron {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            color: var(--text-body);
            font-size: 0.9rem;
            line-height: 1.8;
            padding: 0 1.5rem;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0.25rem 1.5rem 1.5rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 5rem 0;
            overflow: hidden;
        }

        .cta-glow {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 400px;
            background: radial-gradient(ellipse, rgba(0, 212, 255, 0.12) 0%, transparent 70%);
            filter: blur(40px);
            pointer-events: none;
            z-index: 0;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 40rem;
            margin: 0 auto;
            padding: 3rem 2rem;
            border-radius: 24px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(16px);
        }

        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }

        .cta-inner h2 span {
            color: var(--primary);
        }

        .cta-inner p {
            color: var(--text-body);
            margin-bottom: 1.5rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #050A12;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 3.5rem;
            position: relative;
            z-index: 10;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            padding-bottom: 2.5rem;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-weak);
            line-height: 1.8;
            max-width: 20rem;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 1rem;
        }

        .footer-col ul {
            list-style: none;
            display: grid;
            gap: 0.5rem;
        }

        .footer-col a {
            font-size: 0.85rem;
            color: var(--text-weak);
            transition: var(--transition-base);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 1.25rem 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.8rem;
            color: var(--text-weak);
        }

        .footer-social {
            display: flex;
            gap: 0.5rem;
        }

        .footer-social a {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-body);
            font-size: 0.85rem;
            transition: var(--transition-base);
        }

        .footer-social a:hover {
            color: var(--primary);
            border-color: rgba(0, 212, 255, 0.4);
            box-shadow: 0 0 12px rgba(0, 212, 255, 0.15);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }

            .hero-visual {
                display: none;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }

            .feature-row,
            .feature-row.reverse {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .feature-row.reverse .feature-text,
            .feature-row.reverse .feature-visual {
                order: initial;
            }

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

            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 30rem;
                margin: 0 auto;
            }

            .pricing-card.featured {
                transform: scale(1);
            }

            .pricing-card.featured:hover {
                transform: scale(1.02);
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links,
            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .hero-section {
                padding-top: 100px;
                padding-bottom: 60px;
            }

            .hero-title {
                font-size: 2.2rem;
            }

            .hero-dashboard {
                display: none;
            }

            .case-grid {
                grid-template-columns: 1fr;
            }

            .scenario-grid {
                grid-template-columns: 1fr;
            }

            .cms-grid {
                grid-template-columns: 1fr;
            }

            .cms-card.featured-card {
                grid-column: span 1;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

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

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
            }

            .metric-value {
                font-size: 1.5rem;
            }

            .section {
                padding: 3rem 0;
            }

            .section-title {
                font-size: 1.75rem;
            }

            .feature-visual {
                min-height: 200px;
            }

            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }

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

            .cta-inner {
                padding: 2rem 1.25rem;
            }

            .cta-inner h2 {
                font-size: 1.5rem;
            }
        }

/* roulang page: category1 */
:root {
        --bg-primary: #08101F;
        --bg-secondary: #0A1428;
        --bg-deep: #060B14;
        --accent: #00D4FF;
        --accent-hover: #33DFFF;
        --gold: #F5B841;
        --text-main: #E6EDF7;
        --text-body: #94A3B8;
        --text-weak: #64748B;
        --border-glass: rgba(255, 255, 255, 0.08);
        --border-glass-hover: rgba(255, 255, 255, 0.14);
        --radius-lg: 16px;
        --radius-md: 12px;
        --shadow-glow: 0 0 24px rgba(0, 212, 255, 0.45);
        --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-sans);
        background: linear-gradient(160deg, #0B1526 0%, #060B14 100%);
        color: var(--text-main);
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
        overflow-x: hidden;
    }

    .bg-grid::before {
        content: "";
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-image: 
            linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
            linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
        background-size: 44px 44px;
        pointer-events: none;
        z-index: 0;
    }

    .container {
        max-width: 80rem;
        margin: 0 auto;
        padding-left: 1rem;
        padding-right: 1rem;
    }

    @media (min-width: 640px) {
        .container {
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
    }

    @media (min-width: 1024px) {
        .container {
            padding-left: 2rem;
            padding-right: 2rem;
        }
    }

    /* 导航 */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 100;
        transition: all 0.4s ease;
        background: rgba(7, 13, 26, 0.6);
        backdrop-filter: blur(8px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }

    .site-header.scrolled {
        background: rgba(7, 13, 26, 0.88);
        backdrop-filter: blur(20px);
        border-bottom-color: rgba(255, 255, 255, 0.08);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    }

    .nav-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
        gap: 1rem;
    }

    .nav-logo {
        display: flex;
        align-items: center;
        gap: 0.65rem;
        color: var(--text-main);
        text-decoration: none;
        font-size: 1.2rem;
        font-weight: 700;
        letter-spacing: -0.01em;
        white-space: nowrap;
        transition: opacity 0.3s;
    }

    .nav-logo:hover {
        opacity: 0.85;
    }

    .nav-logo-icon {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: linear-gradient(135deg, var(--accent), #0099CC);
        border-radius: 10px;
        font-size: 1.1rem;
        font-weight: 800;
        color: #08101F;
        box-shadow: 0 0 20px rgba(0, 212, 255, 0.35);
    }

    .nav-links {
        display: none;
        align-items: center;
        gap: 0.25rem;
    }

    .nav-link {
        color: var(--text-body);
        text-decoration: none;
        font-size: 0.95rem;
        font-weight: 500;
        padding: 0.5rem 1rem;
        border-radius: 8px;
        transition: all 0.25s;
        position: relative;
        white-space: nowrap;
    }

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

    .nav-link.active {
        color: var(--accent);
        font-weight: 600;
    }

    .nav-link.active::after {
        content: "";
        position: absolute;
        left: 1rem;
        right: 1rem;
        bottom: 2px;
        height: 2px;
        background: var(--accent);
        box-shadow: 0 0 12px rgba(0, 212, 255, 0.6);
        border-radius: 2px;
    }

    .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        background: var(--accent);
        color: #08101F;
        font-weight: 600;
        font-size: 0.95rem;
        padding: 0.7rem 1.6rem;
        border-radius: 999px;
        border: none;
        text-decoration: none;
        transition: all 0.3s;
        cursor: pointer;
        box-shadow: 0 0 24px rgba(0, 212, 255, 0.45);
    }

    .btn-primary:hover {
        background: var(--accent-hover);
        box-shadow: 0 0 35px rgba(0, 212, 255, 0.65);
        transform: translateY(-2px);
    }

    .btn-primary:active {
        transform: scale(0.97);
    }

    .btn-secondary {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        background: transparent;
        color: var(--text-main);
        font-weight: 500;
        font-size: 0.95rem;
        padding: 0.7rem 1.6rem;
        border-radius: 999px;
        border: 1px solid rgba(255, 255, 255, 0.25);
        text-decoration: none;
        transition: all 0.3s;
        cursor: pointer;
    }

    .btn-secondary:hover {
        border-color: rgba(255, 255, 255, 0.5);
        background: rgba(255, 255, 255, 0.06);
        transform: translateY(-2px);
    }

    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 42px;
        height: 42px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        color: var(--text-main);
        cursor: pointer;
        transition: all 0.3s;
    }

    .nav-toggle:hover {
        border-color: var(--accent);
        color: var(--accent);
    }

    /* 移动端抽屉 */
    .mobile-drawer {
        position: fixed;
        top: 0;
        right: -320px;
        width: 300px;
        height: 100%;
        z-index: 200;
        background: rgba(7, 13, 26, 0.98);
        backdrop-filter: blur(30px);
        border-left: 1px solid rgba(255, 255, 255, 0.08);
        transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        padding: 1.5rem;
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    .mobile-drawer.open {
        right: 0;
    }

    .drawer-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 2rem;
        padding-bottom: 1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .drawer-close {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        color: var(--text-main);
        cursor: pointer;
        transition: all 0.3s;
    }

    .drawer-close:hover {
        color: var(--accent);
        border-color: var(--accent);
    }

    .drawer-link {
        color: var(--text-body);
        text-decoration: none;
        font-size: 1.15rem;
        font-weight: 500;
        padding: 0.8rem 1rem;
        border-radius: 10px;
        transition: all 0.25s;
    }

    .drawer-link:hover {
        color: var(--text-main);
        background: rgba(255, 255, 255, 0.05);
    }

    .drawer-link.active {
        color: var(--accent);
        background: rgba(0, 212, 255, 0.08);
    }

    .drawer-cta {
        margin-top: auto;
        padding-top: 1.5rem;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 150;
        opacity: 0;
        visibility: hidden;
        transition: all 0.35s;
        backdrop-filter: blur(4px);
    }

    .overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* Hero */
    .hero {
        position: relative;
        min-height: 92vh;
        display: flex;
        align-items: center;
        overflow: hidden;
        padding-top: 120px;
        padding-bottom: 80px;
    }

    .hero-bg {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-image: url('/assets/images/backpic/back-1.webp');
        background-size: cover;
        background-position: center;
        z-index: 0;
    }

    .hero-bg::after {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(105deg, rgba(8, 16, 31, 0.95) 30%, rgba(8, 16, 31, 0.75) 60%, rgba(8, 16, 31, 0.45) 100%);
    }

    .hero-content {
        position: relative;
        z-index: 2;
        display: grid;
        grid-template-columns: 1fr;
        gap: 2.5rem;
        align-items: center;
    }

    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(0, 212, 255, 0.1);
        border: 1px solid rgba(0, 212, 255, 0.25);
        color: var(--accent);
        font-size: 0.82rem;
        font-weight: 500;
        padding: 0.35rem 1rem;
        border-radius: 999px;
        margin-bottom: 1.2rem;
    }

    .hero-title {
        font-size: 2.2rem;
        line-height: 1.15;
        font-weight: 700;
        letter-spacing: -0.02em;
        margin-bottom: 1.2rem;
    }

    .hero-title .highlight {
        color: var(--accent);
        position: relative;
    }

    .hero-desc {
        color: var(--text-body);
        font-size: 1.05rem;
        margin-bottom: 2rem;
        max-width: 540px;
    }

    .hero-buttons {
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
    }

    /* 玻璃卡片 */
    .glass-card {
        background: rgba(255, 255, 255, 0.04);
        backdrop-filter: blur(16px);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        padding: 1.5rem;
        transition: all 0.35s ease;
    }

    .glass-card:hover {
        background: rgba(255, 255, 255, 0.07);
        border-color: var(--border-glass-hover);
        box-shadow: 0 8px 40px rgba(0, 212, 255, 0.12);
        transform: translateY(-4px);
    }

    /* 区块标题 */
    .section {
        position: relative;
        padding-top: 4rem;
        padding-bottom: 4rem;
    }

    .section-title-wrap {
        margin-bottom: 2.5rem;
    }

    .section-title {
        font-size: 1.6rem;
        font-weight: 700;
        letter-spacing: -0.01em;
        line-height: 1.3;
        color: var(--text-main);
        position: relative;
        padding-left: 16px;
    }

    .section-title::before {
        content: "";
        position: absolute;
        left: 0;
        top: 4px;
        bottom: 4px;
        width: 4px;
        background: var(--accent);
        border-radius: 4px;
        box-shadow: 0 0 12px rgba(0, 212, 255, 0.5);
    }

    .section-subtitle {
        color: var(--text-body);
        margin-top: 0.6rem;
        font-size: 0.95rem;
        max-width: 640px;
    }

    /* 徽章 */
    .badge {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        background: rgba(0, 212, 255, 0.1);
        color: var(--accent);
        border: 1px solid rgba(0, 212, 255, 0.2);
        border-radius: 999px;
        padding: 0.25rem 0.9rem;
        font-size: 0.78rem;
        font-weight: 500;
        white-space: nowrap;
    }

    .badge-gold {
        background: rgba(245, 184, 65, 0.12);
        color: var(--gold);
        border-color: rgba(245, 184, 65, 0.25);
    }

    /* 统计条 */
    .stats-bar {
        position: relative;
        z-index: 3;
        margin-top: -40px;
        margin-bottom: 2rem;
    }

    .stats-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .stat-item {
        text-align: center;
        padding: 1.5rem 1rem;
    }

    .stat-number {
        font-size: 2rem;
        font-weight: 800;
        color: var(--gold);
        line-height: 1.2;
        font-variant-numeric: tabular-nums;
    }

    .stat-label {
        color: var(--text-body);
        font-size: 0.85rem;
        margin-top: 0.35rem;
    }

    /* 内容卡片 */
    .feature-card {
        position: relative;
        overflow: hidden;
    }

    .feature-card-icon {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 50px;
        height: 50px;
        border-radius: 14px;
        background: rgba(0, 212, 255, 0.1);
        border: 1px solid rgba(0, 212, 255, 0.2);
        color: var(--accent);
        font-size: 1.3rem;
        margin-bottom: 1rem;
        transition: all 0.3s;
    }

    .feature-card:hover .feature-card-icon {
        background: rgba(0, 212, 255, 0.2);
        box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
        transform: scale(1.06);
    }

    .feature-card-title {
        font-size: 1.1rem;
        font-weight: 600;
        color: var(--text-main);
        margin-bottom: 0.5rem;
    }

    .feature-card-desc {
        color: var(--text-body);
        font-size: 0.9rem;
        line-height: 1.7;
    }

    .feature-list {
        list-style: none;
        margin-top: 1rem;
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    .feature-list li {
        display: flex;
        align-items: flex-start;
        gap: 0.5rem;
        color: var(--text-body);
        font-size: 0.88rem;
    }

    .feature-list li i {
        color: var(--accent);
        margin-top: 4px;
        font-size: 0.75rem;
    }

    /* 场景卡 */
    .scene-card {
        position: relative;
        border-radius: var(--radius-lg);
        overflow: hidden;
        min-height: 320px;
        display: flex;
        align-items: flex-end;
        background: var(--bg-secondary);
        transition: all 0.4s;
        cursor: pointer;
    }

    .scene-card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(to top, rgba(6, 11, 20, 0.95) 0%, rgba(6, 11, 20, 0.4) 50%, transparent 100%);
        z-index: 1;
    }

    .scene-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 12px 48px rgba(0, 212, 255, 0.15);
    }

    .scene-card img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        position: absolute;
        inset: 0;
        transition: transform 0.5s;
    }

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

    .scene-card-body {
        position: relative;
        z-index: 2;
        padding: 1.5rem;
        width: 100%;
    }

    .scene-card-title {
        font-size: 1.15rem;
        font-weight: 600;
        color: #fff;
        margin-bottom: 0.3rem;
    }

    .scene-card-desc {
        color: rgba(255, 255, 255, 0.75);
        font-size: 0.88rem;
    }

    /* 流程 */
    .process-item {
        display: flex;
        gap: 1rem;
        align-items: flex-start;
        padding: 1.2rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .process-item:last-child {
        border-bottom: none;
    }

    .process-num {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: rgba(0, 212, 255, 0.1);
        border: 1px solid rgba(0, 212, 255, 0.25);
        color: var(--accent);
        font-weight: 700;
        font-size: 0.95rem;
        flex-shrink: 0;
    }

    .process-title {
        font-weight: 600;
        color: var(--text-main);
        font-size: 1rem;
    }

    .process-desc {
        color: var(--text-body);
        font-size: 0.88rem;
        margin-top: 0.2rem;
    }

    /* 内容块 */
    .media-card {
        border-radius: var(--radius-lg);
        overflow: hidden;
        background: rgba(255, 255, 255, 0.03);
        border: 1px solid rgba(255, 255, 255, 0.06);
        transition: all 0.35s;
    }

    .media-card:hover {
        border-color: rgba(0, 212, 255, 0.3);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        transform: translateY(-4px);
    }

    .media-card img {
        width: 100%;
        height: 180px;
        object-fit: cover;
        display: block;
    }

    .media-card-body {
        padding: 1.2rem;
    }

    .media-card-title {
        font-weight: 600;
        color: var(--text-main);
        font-size: 1rem;
        line-height: 1.5;
        margin-top: 0.5rem;
        margin-bottom: 0.4rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .media-card-desc {
        color: var(--text-body);
        font-size: 0.85rem;
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .media-card-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-top: 0.8rem;
        font-size: 0.78rem;
        color: var(--text-weak);
    }

    /* FAQ */
    .faq-item {
        border-radius: var(--radius-lg);
        background: rgba(255, 255, 255, 0.03);
        border: 1px solid rgba(255, 255, 255, 0.07);
        padding: 1.2rem 1.4rem;
        margin-bottom: 0.8rem;
        transition: all 0.3s;
        cursor: pointer;
    }

    .faq-item:hover {
        border-color: rgba(0, 212, 255, 0.3);
    }

    .faq-item.open {
        border-color: rgba(0, 212, 255, 0.35);
        background: rgba(0, 212, 255, 0.04);
    }

    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 1rem;
        color: var(--text-main);
        font-weight: 500;
        font-size: 0.98rem;
    }

    .faq-question i {
        color: var(--accent);
        transition: transform 0.3s;
        flex-shrink: 0;
        font-size: 0.85rem;
    }

    .faq-item.open .faq-question i {
        transform: rotate(180deg);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
    }

    .faq-item.open .faq-answer {
        max-height: 300px;
    }

    .faq-answer p {
        padding-top: 0.8rem;
        color: var(--text-body);
        font-size: 0.9rem;
        line-height: 1.7;
    }

    /* CTA */
    .cta-section {
        position: relative;
        padding: 4rem 0;
        overflow: hidden;
    }

    .cta-glow {
        position: absolute;
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(0, 212, 255, 0.12) 0%, transparent 60%);
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        pointer-events: none;
    }

    .cta-card {
        position: relative;
        text-align: center;
        padding: 3rem 2rem;
        border-radius: 20px;
        background: rgba(255, 255, 255, 0.04);
        backdrop-filter: blur(16px);
        border: 1px solid rgba(255, 255, 255, 0.09);
        overflow: hidden;
    }

    .cta-title {
        font-size: 1.6rem;
        font-weight: 700;
        margin-bottom: 0.6rem;
    }

    .cta-desc {
        color: var(--text-body);
        max-width: 520px;
        margin: 0 auto 1.8rem;
        font-size: 0.95rem;
    }

    /* 页脚 */
    .site-footer {
        background: #050A12;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding: 3rem 0 1.5rem;
        position: relative;
        z-index: 2;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 2rem;
        padding-bottom: 2.5rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        margin-bottom: 1.5rem;
    }

    .footer-logo {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        color: var(--text-main);
        text-decoration: none;
        font-size: 1.2rem;
        font-weight: 700;
        margin-bottom: 1rem;
    }

    .footer-brand p {
        color: var(--text-weak);
        font-size: 0.88rem;
        line-height: 1.7;
        max-width: 320px;
    }

    .footer-social {
        display: flex;
        gap: 0.6rem;
        margin-top: 1rem;
    }

    .footer-social a {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 10px;
        color: var(--text-body);
        text-decoration: none;
        font-size: 0.85rem;
        transition: all 0.3s;
    }

    .footer-social a:hover {
        color: var(--accent);
        border-color: rgba(0, 212, 255, 0.4);
        background: rgba(0, 212, 255, 0.08);
        transform: translateY(-3px);
    }

    .footer-col h4 {
        color: var(--text-main);
        font-size: 0.95rem;
        font-weight: 600;
        margin-bottom: 1rem;
    }

    .footer-col ul {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 0.55rem;
    }

    .footer-col a {
        color: var(--text-weak);
        font-size: 0.88rem;
        text-decoration: none;
        transition: color 0.25s;
    }

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

    .footer-bottom {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: space-between;
        gap: 0.6rem;
        color: var(--text-weak);
        font-size: 0.82rem;
    }

    /* 响应式 */
    @media (min-width: 768px) {
        .hero {
            min-height: 85vh;
        }

        .hero-title {
            font-size: 3rem;
        }

        .stats-grid {
            grid-template-columns: repeat(4, 1fr);
        }

        .section {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }

        .section-title {
            font-size: 2rem;
        }

        .cta-card {
            padding: 4rem;
        }

        .footer-grid {
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
        }

        .footer-bottom {
            flex-direction: row;
        }
    }

    @media (min-width: 1024px) {
        .nav-links {
            display: flex;
        }

        .nav-cta {
            display: block;
        }

        .nav-toggle {
            display: none;
        }

        .hero-content {
            grid-template-columns: 1.1fr 0.9fr;
        }

        .hero-title {
            font-size: 3.4rem;
        }
    }

    @media (max-width: 767px) {
        .hero {
            padding-top: 110px;
            padding-bottom: 60px;
            text-align: center;
        }

        .hero-badge {
            margin-left: auto;
            margin-right: auto;
        }

        .hero-desc {
            margin-left: auto;
            margin-right: auto;
        }

        .hero-buttons {
            justify-content: center;
        }
    }

    @media (max-width: 520px) {
        .nav-logo {
            font-size: 1.05rem;
        }

        .nav-logo-icon {
            width: 32px;
            height: 32px;
        }

        .hero-title {
            font-size: 1.85rem;
        }

        .section-title {
            font-size: 1.4rem;
        }

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

/* roulang page: article */
:root {
    --color-bg-primary: #0B1526;
    --color-bg-secondary: #060B14;
    --color-accent-cyan: #00D4FF;
    --color-accent-gold: #F5B841;
    --color-text-primary: #E6EDF7;
    --color-text-secondary: #94A3B8;
    --color-text-weak: #64748B;
    --border-color-light: rgba(255,255,255,0.08);
    --border-color-hover: rgba(255,255,255,0.14);
    --glass-bg: rgba(255,255,255,0.04);
    --glass-bg-hover: rgba(255,255,255,0.07);
    --radius-card: 16px;
    --radius-btn: 999px;
    --shadow-cyan: 0 0 24px rgba(0,212,255,0.45);
    --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-cn);
    background: linear-gradient(145deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    color: var(--color-text-primary);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    position: relative;
}
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,212,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,212,255,0.025) 1px, transparent 1px);
    background-size: 44px 44px;
    pointer-events: none;
    z-index: 0;
}
body::after {
    content: '';
    position: fixed;
    top: -10%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0,212,255,0.07), transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.container { max-width: 80rem; margin: 0 auto; padding: 0 1rem; position: relative; z-index: 1; }
@media (min-width: 640px) { .container { padding: 0 1.5rem; } }
@media (min-width: 1024px) { .container { padding: 0 2rem; } }

a { color: inherit; text-decoration: none; transition: color .3s ease; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style-position: inside; }
button { cursor: pointer; }

h1, h2, h3, h4 { line-height: 1.3; letter-spacing: -0.01em; }

.section-padding { padding: 4rem 0; }
@media (min-width: 768px) { .section-padding { padding: 5rem 0; } }

.section-label {
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent-cyan);
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.section-label::before {
    content: '';
    width: 22px;
    height: 1px;
    background: var(--color-accent-cyan);
    opacity: 0.5;
}
.section-title {
    font-size: 1.65rem;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}
@media (min-width: 768px) {
    .section-title { font-size: 2rem; }
}
.section-desc {
    color: var(--color-text-secondary);
    margin-top: 0.6rem;
    max-width: 65ch;
    font-size: 0.95rem;
}

/* ===== Glass Card ===== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-card);
    transition: all .4s ease;
}
.glass-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--border-color-hover);
    box-shadow: 0 4px 32px rgba(0,212,255,0.12);
}

/* ===== Buttons ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-cyan);
    color: #08101F;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-btn);
    padding: 0.72rem 1.6rem;
    box-shadow: var(--shadow-cyan);
    transition: all .3s ease;
    border: none;
    cursor: pointer;
    line-height: 1.4;
    gap: 0.4rem;
}
.btn-primary:hover {
    background: #33DDFF;
    transform: translateY(-2px);
    box-shadow: 0 0 32px rgba(0,212,255,0.6);
}
.btn-primary:active { transform: scale(0.97); }
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: #E6EDF7;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-btn);
    padding: 0.72rem 1.6rem;
    border: 1px solid rgba(255,255,255,0.2);
    transition: all .3s ease;
    cursor: pointer;
    line-height: 1.4;
    gap: 0.4rem;
}
.btn-secondary:hover {
    border-color: rgba(255,255,255,0.5);
    background: rgba(255,255,255,0.06);
}
.btn-secondary:active { transform: scale(0.97); }

/* ===== Header ===== */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 50;
    padding: 1rem 0;
    transition: all .4s ease;
}
.site-header.scrolled {
    background: rgba(7,13,26,0.85);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    padding: 0.6rem 0;
    box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    white-space: nowrap;
}
.nav-logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--color-accent-cyan), #0090BB);
    color: #08101F;
    font-weight: 800;
    font-size: 1.15rem;
    box-shadow: 0 0 20px rgba(0,212,255,0.35);
    flex-shrink: 0;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}
.nav-link {
    position: relative;
    color: var(--color-text-secondary);
    font-size: 0.92rem;
    font-weight: 500;
    padding: 0.4rem 0.15rem;
    transition: color .3s;
    white-space: nowrap;
}
.nav-link:hover { color: var(--color-text-primary); }
.nav-link.active { color: var(--color-accent-cyan); }
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0; right: 0;
    height: 2px;
    background: var(--color-accent-cyan);
    border-radius: 2px;
    box-shadow: 0 0 12px rgba(0,212,255,0.6);
}
.nav-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    cursor: pointer;
    padding: 0.4rem;
    border-radius: 8px;
}
.nav-toggle:hover { color: var(--color-accent-cyan); }

/* ===== Mobile Drawer ===== */
.mobile-drawer {
    position: fixed;
    top: 0; right: -100%;
    width: min(320px, 85vw);
    height: 100vh;
    background: rgba(7,13,26,0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    z-index: 100;
    padding: 2rem 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: right .45s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 1px solid rgba(255,255,255,0.08);
    box-shadow: -16px 0 40px rgba(0,0,0,0.4);
}
.mobile-drawer.open { right: 0; }
.mobile-drawer a.m-drawer-link {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    padding: 0.65rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    transition: color .3s, padding-left .3s;
}
.mobile-drawer a.m-drawer-link:hover {
    color: var(--color-accent-cyan);
    padding-left: 0.4rem;
}
.mobile-drawer a.m-drawer-link.active {
    color: var(--color-accent-cyan);
    font-weight: 600;
}
.mobile-drawer .btn-primary {
    margin-top: 1.25rem;
    justify-content: center;
}
.drawer-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: opacity .4s, visibility .4s;
}
.drawer-backdrop.open { opacity: 1; visibility: visible; }

@media (max-width: 768px) {
    .nav-links, .nav-cta { display: none; }
    .nav-toggle { display: block; }
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.45rem;
    font-size: 0.84rem;
    color: var(--color-text-weak);
    padding-top: 7rem;
    padding-bottom: 1.25rem;
}
.breadcrumb a { color: var(--color-text-weak); transition: color .3s; }
.breadcrumb a:hover { color: var(--color-accent-cyan); }
.breadcrumb .separator { opacity: 0.45; font-size: 0.75rem; }
.breadcrumb .current { color: var(--color-text-secondary); }
@media (max-width: 768px) {
    .breadcrumb { padding-top: 6rem; }
}

/* ===== Article ===== */
.article-wrap {
    max-width: 800px;
    margin: 0 auto;
    padding-bottom: 2rem;
}
.article-header {
    padding: 1.75rem 2rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}
.article-header::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 240px;
    height: 240px;
    background: radial-gradient(circle, rgba(0,212,255,0.08), transparent 70%);
    pointer-events: none;
}
.article-title {
    font-size: 1.8rem;
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}
@media (min-width: 768px) {
    .article-title { font-size: 2.2rem; }
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem 1.5rem;
    font-size: 0.82rem;
    color: var(--color-text-weak);
    padding-bottom: 1.25rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    position: relative;
    z-index: 1;
}
.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.article-meta i { color: var(--color-accent-cyan); font-size: 0.75rem; }

.article-body {
    font-size: 1rem;
    color: #C6D2E3;
    padding: 0 2rem;
    line-height: 1.9;
}
@media (max-width: 640px) {
    .article-body { padding: 0 1.25rem; }
}
.article-body > * { margin-bottom: 1.5em; }
.article-body h2 {
    font-size: 1.45rem;
    color: var(--color-text-primary);
    margin-top: 2.25rem;
    margin-bottom: 0.8em;
    padding-left: 0.85rem;
    border-left: 4px solid var(--color-accent-cyan);
    border-radius: 0 4px 4px 0;
}
.article-body h3 {
    font-size: 1.2rem;
    color: var(--color-text-primary);
    margin-top: 1.75rem;
    margin-bottom: 0.6em;
}
.article-body h4 {
    font-size: 1.05rem;
    color: var(--color-text-primary);
    margin-top: 1.25rem;
    margin-bottom: 0.5em;
}
.article-body p { margin-bottom: 1.4em; }
.article-body a { color: var(--color-accent-cyan); }
.article-body a:hover { text-decoration: underline; }
.article-body strong { color: var(--color-text-primary); font-weight: 600; }
.article-body blockquote {
    border-left: 4px solid var(--color-accent-cyan);
    background: rgba(255,255,255,0.03);
    padding: 1rem 1.25rem;
    border-radius: 0 12px 12px 0;
    color: var(--color-text-secondary);
    font-style: normal;
    margin: 1.75em 0;
}
.article-body blockquote p { margin-bottom: 0.5em; }
.article-body blockquote p:last-child { margin-bottom: 0; }
.article-body code {
    background: rgba(255,255,255,0.08);
    padding: 0.2rem 0.45rem;
    border-radius: 6px;
    font-size: 0.88em;
    color: var(--color-accent-cyan);
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
}
.article-body pre {
    background: rgba(0,0,0,0.35);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
    padding: 1.25rem;
    overflow-x: auto;
    margin: 1.75em 0;
}
.article-body pre code {
    background: transparent;
    padding: 0;
    color: #C6D2E3;
    font-size: 0.88rem;
}
.article-body img {
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.06);
    margin: 1.5em 0;
}
.article-body ul, .article-body ol {
    padding-left: 1.25rem;
    color: #C6D2E3;
    margin-bottom: 1.4em;
}
.article-body li { margin-bottom: 0.5rem; }
.article-body li::marker { color: var(--color-accent-cyan); }
.article-body hr {
    border: none;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.12), transparent);
    margin: 2.5em 0;
}

/* ===== Tags ===== */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1.5rem 2rem 0;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
@media (max-width: 640px) {
    .article-tags { margin-left: 1.25rem; margin-right: 1.25rem; }
}
.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: rgba(0,212,255,0.08);
    color: var(--color-accent-cyan);
    border: 1px solid rgba(0,212,255,0.18);
    border-radius: 999px;
    padding: 0.28rem 0.85rem;
    font-size: 0.78rem;
    font-weight: 500;
    transition: all .3s;
}
.tag:hover {
    background: rgba(0,212,255,0.16);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,212,255,0.15);
}
.tag-gold {
    background: rgba(245,184,65,0.08);
    color: var(--color-accent-gold);
    border-color: rgba(245,184,65,0.2);
}
.tag-gold:hover {
    background: rgba(245,184,65,0.15);
    box-shadow: 0 4px 12px rgba(245,184,65,0.15);
}

/* ===== Share ===== */
.article-share {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    margin: 0 2rem;
    padding: 1.25rem 0;
}
@media (max-width: 640px) {
    .article-share { margin: 0 1.25rem; }
}
.share-label {
    font-size: 0.85rem;
    color: var(--color-text-weak);
    margin-right: 0.25rem;
}
.share-btn {
    width: 38px;
    height: 38px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    transition: all .3s;
}
.share-btn:hover {
    background: rgba(0,212,255,0.15);
    border-color: rgba(0,212,255,0.3);
    color: var(--color-accent-cyan);
    transform: translateY(-2px);
}

/* ===== Post Nav ===== */
.post-nav {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin: 1.5rem 2rem 2.5rem;
}
@media (min-width: 640px) {
    .post-nav { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
    .post-nav { margin-left: 1.25rem; margin-right: 1.25rem; }
}
.post-nav-card {
    display: block;
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-card);
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    transition: all .3s;
}
.post-nav-card:hover {
    border-color: rgba(0,212,255,0.3);
    background: rgba(255,255,255,0.06);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}
.post-nav-card .label {
    font-size: 0.78rem;
    color: var(--color-text-weak);
    margin-bottom: 0.3rem;
}
.post-nav-card .title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.4;
}

/* ===== Related ===== */
.related-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}
.related-card .related-img {
    border-radius: 12px;
    width: 100%;
    height: 140px;
    object-fit: cover;
    margin-bottom: 0.9rem;
    transition: transform .5s ease;
}
.related-card:hover .related-img { transform: scale(1.03); }
.related-card-title {
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-card:hover .related-card-title { color: var(--color-accent-cyan); }

.badge {
    display: inline-flex;
    align-items: center;
    background: rgba(0,212,255,0.1);
    color: var(--color-accent-cyan);
    border: 1px solid rgba(0,212,255,0.2);
    border-radius: 999px;
    padding: 0.22rem 0.7rem;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    line-height: 1.4;
}
.badge-gold {
    background: rgba(245,184,65,0.1);
    color: var(--color-accent-gold);
    border-color: rgba(245,184,65,0.25);
}

/* ===== CTA ===== */
.cta-section {
    position: relative;
    overflow: hidden;
    text-align: center;
    padding: 4rem 1.5rem;
    border-radius: 24px;
    background:
        linear-gradient(rgba(7,13,26,0.7), rgba(7,13,26,0.7)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.cta-section::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(0,212,255,0.12), transparent 70%);
    pointer-events: none;
}
.cta-section > * { position: relative; z-index: 2; }
.cta-section h2 { font-size: 1.6rem; font-weight: 700; margin-bottom: 0.6rem; }
@media (min-width: 768px) {
    .cta-section h2 { font-size: 2rem; }
}
.cta-section p { color: var(--color-text-secondary); margin-bottom: 1.5rem; max-width: 42rem; margin-left: auto; margin-right: auto; }

/* ===== Not Found ===== */
.not-found-box {
    text-align: center;
    padding: 4.5rem 2rem;
    margin-bottom: 3rem;
}
.not-found-icon {
    font-size: 3.5rem;
    margin-bottom: 1.25rem;
    display: block;
}
.not-found-box h1 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-text-primary);
}
.not-found-box p {
    color: var(--color-text-secondary);
    margin-bottom: 1.75rem;
    font-size: 0.95rem;
}

/* ===== Footer ===== */
.site-footer {
    background: #050A12;
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 3.5rem 0 1.5rem;
    margin-top: 3rem;
    position: relative;
    z-index: 1;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
}
@media (min-width: 768px) {
    .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; }
}
.footer-brand p {
    color: var(--color-text-weak);
    font-size: 0.85rem;
    margin-top: 0.85rem;
    line-height: 1.7;
    max-width: 32ch;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--color-text-primary);
}
.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.9rem;
    color: var(--color-text-primary);
    letter-spacing: 0.02em;
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul a {
    color: var(--color-text-weak);
    font-size: 0.85rem;
    transition: color .3s, padding-left .3s;
}
.footer-col ul a:hover {
    color: var(--color-accent-cyan);
    padding-left: 0.25rem;
}
.footer-social { display: flex; gap: 0.5rem; margin-top: 1rem; }
.footer-social a {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.07);
    font-size: 0.78rem;
    color: var(--color-text-weak);
    transition: all .3s;
}
.footer-social a:hover {
    color: var(--color-accent-cyan);
    border-color: rgba(0,212,255,0.3);
    background: rgba(0,212,255,0.08);
    transform: translateY(-2px);
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 1.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-text-weak);
    text-align: center;
}
@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}
.footer-bottom a { color: var(--color-text-weak); }
.footer-bottom a:hover { color: var(--color-accent-cyan); }

/* ===== Focus ===== */
a:focus-visible, button:focus-visible {
    outline: 2px solid var(--color-accent-cyan);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ===== Selection ===== */
::selection {
    background: rgba(0,212,255,0.25);
    color: var(--color-text-primary);
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg-secondary); }
::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.12);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(0,212,255,0.3); }

/* roulang page: category2 */
:root {
            --bs-cyan: #00D4FF;
            --bs-gold: #F5B841;
            --bs-dark: #08101F;
            --bs-bg: #0B1526;
            --bs-deep: #060B14;
            --bs-card-bg: rgba(255, 255, 255, 0.04);
            --bs-card-border: rgba(255, 255, 255, 0.08);
            --bs-card-hover-bg: rgba(255, 255, 255, 0.07);
            --bs-card-hover-border: rgba(255, 255, 255, 0.14);
            --bs-text: #E6EDF7;
            --bs-text-secondary: #94A3B8;
            --bs-text-weak: #64748B;
            --bs-radius: 16px;
            --bs-shadow: 0 0 24px rgba(0, 212, 255, 0.12);
            --bs-radius-pill: 999px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: linear-gradient(135deg, #0B1526 0%, #060B14 100%);
            color: var(--bs-text);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
        }
        .container {
            max-width: 80rem;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media(min-width:640px) {
            .container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media(min-width:1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            transition: background .3s ease, box-shadow .3s ease, backdrop-filter .3s ease;
            background: transparent;
        }
        .site-header.scrolled {
            background: rgba(7, 13, 26, .85);
            backdrop-filter: blur(16px);
            box-shadow: 0 1px 20px rgba(0, 0, 0, .35);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: .6rem;
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--bs-text);
        }
        .nav-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, #00D4FF, #0984A6);
            color: #08101F;
            font-weight: 800;
            font-size: 1.1rem;
            box-shadow: 0 0 18px rgba(0, 212, 255, .4);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .nav-link {
            font-size: .92rem;
            color: rgba(230, 237, 247, .75);
            font-weight: 500;
            padding: .35rem 0;
            position: relative;
            transition: color .2s;
        }
        .nav-link:hover {
            color: var(--bs-cyan);
        }
        .nav-link.active {
            color: var(--bs-cyan);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--bs-cyan);
            box-shadow: 0 0 10px rgba(0, 212, 255, .6);
        }
        .nav-cta {
            display: flex;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--bs-cyan);
            color: #08101F;
            font-weight: 600;
            border-radius: 999px;
            padding: .7rem 1.6rem;
            font-size: .9rem;
            box-shadow: 0 0 24px rgba(0, 212, 255, .4);
            transition: all .2s;
            border: none;
            cursor: pointer;
            line-height: 1.4;
        }
        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 0 30px rgba(0, 212, 255, .55);
        }
        .btn-primary:active {
            transform: scale(.97);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .2);
            color: #E6EDF7;
            border-radius: 999px;
            padding: .7rem 1.6rem;
            font-size: .9rem;
            font-weight: 500;
            transition: all .2s;
            cursor: pointer;
            line-height: 1.4;
        }
        .btn-secondary:hover {
            border-color: rgba(255, 255, 255, .4);
            background: rgba(255, 255, 255, .06);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--bs-text);
            cursor: pointer;
            padding: .4rem;
            border-radius: 8px;
        }
        .nav-toggle:focus {
            outline: 2px solid rgba(0, 212, 255, .5);
            outline-offset: 2px;
        }
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            padding: 140px 0 80px;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(103deg, rgba(11, 21, 38, .96) 30%, rgba(11, 21, 38, .72) 60%, rgba(6, 11, 20, .68) 100%);
        }
        .hero-glow {
            position: absolute;
            top: 20%;
            right: -10%;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(0, 212, 255, .18) 0%, transparent 70%);
            filter: blur(40px);
            border-radius: 50%;
            z-index: 0;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 3rem;
            align-items: center;
        }
        .hero h1 {
            font-size: 3.2rem;
            line-height: 1.18;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #E6EDF7;
            margin-bottom: 1.2rem;
        }
        .hero h1 .hl {
            color: var(--bs-cyan);
        }
        .hero-sub {
            font-size: 1.05rem;
            line-height: 1.8;
            color: #94A3B8;
            max-width: 540px;
            margin-bottom: 2rem;
        }
        .hero-ctas {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 2.4rem;
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.2rem;
            max-width: 520px;
        }
        .stat-item {
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 14px;
            padding: 1rem 1.1rem;
            backdrop-filter: blur(12px);
        }
        .stat-item .num {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--bs-gold);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: .85rem;
            color: #94A3B8;
            margin-top: .2rem;
        }
        .hero-panel {
            background: rgba(255, 255, 255, .04);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, .09);
            border-radius: 20px;
            padding: 1.8rem;
            box-shadow: 0 8px 40px rgba(0, 0, 0, .3);
            position: relative;
            z-index: 2;
        }
        .hero-panel h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #E6EDF7;
            margin-bottom: 0.6rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-panel .dot-tag {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--bs-cyan);
            box-shadow: 0 0 8px var(--bs-cyan);
            display: inline-block;
        }
        .hero-panel-list {
            list-style: none;
        }
        .hero-panel-list li {
            display: flex;
            align-items: center;
            gap: .7rem;
            padding: .6rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, .05);
            font-size: .9rem;
            color: #CBD5E1;
        }
        .hero-panel-list li:last-child {
            border-bottom: none;
        }
        .hero-panel-list li>span:first-child {
            color: var(--bs-cyan);
            font-weight: 600;
            font-size: .85rem;
            min-width: 70px;
        }
        .hero-panel-list li>span:last-child {
            color: #94A3B8;
        }
        .channel-nav {
            position: sticky;
            top: 72px;
            z-index: 50;
            background: rgba(7, 13, 26, .8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            padding: .8rem 0;
        }
        .channel-nav-inner {
            display: flex;
            flex-wrap: wrap;
            gap: .6rem;
            align-items: center;
        }
        .channel-pill {
            font-size: .85rem;
            font-weight: 500;
            color: #94A3B8;
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 999px;
            padding: .4rem 1rem;
            transition: all .2s;
        }
        .channel-pill:hover {
            color: var(--bs-cyan);
            border-color: rgba(0, 212, 255, .3);
            background: rgba(0, 212, 255, .06);
        }
        .section {
            padding: 5rem 0;
        }
        .section-label {
            display: inline-block;
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: .1em;
            color: var(--bs-cyan);
            background: rgba(0, 212, 255, .08);
            border: 1px solid rgba(0, 212, 255, .18);
            border-radius: 999px;
            padding: .3rem 1rem;
            margin-bottom: 1rem;
        }
        .section-title {
            font-size: 2rem;
            line-height: 1.25;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #E6EDF7;
            margin-bottom: 1.2rem;
            position: relative;
            padding-left: 18px;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            border-radius: 4px;
            background: var(--bs-cyan);
            box-shadow: 0 0 10px rgba(0, 212, 255, .5);
        }
        .section-desc {
            font-size: 1rem;
            color: #94A3B8;
            max-width: 700px;
            margin-bottom: 2.5rem;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .service-card {
            background: var(--bs-card-bg);
            backdrop-filter: blur(16px);
            border: 1px solid var(--bs-card-border);
            border-radius: var(--bs-radius);
            padding: 1.8rem;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            background: var(--bs-card-hover-bg);
            border-color: var(--bs-card-hover-border);
            box-shadow: var(--bs-shadow);
            transform: translateY(-4px);
        }
        .service-card.featured {
            grid-column: span 2;
        }
        .service-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(0, 212, 255, .2), rgba(0, 212, 255, .05));
            border: 1px solid rgba(0, 212, 255, .2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--bs-cyan);
            margin-bottom: 1.2rem;
        }
        .service-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #E6EDF7;
            margin-bottom: .5rem;
        }
        .service-card p {
            font-size: .9rem;
            line-height: 1.7;
            color: #94A3B8;
            flex: 1;
        }
        .service-card .card-meta {
            display: flex;
            align-items: center;
            gap: .5rem;
            margin-top: 1.2rem;
            font-size: .8rem;
            color: var(--bs-text-weak);
        }
        .service-card .card-meta .badge {
            background: rgba(0, 212, 255, .1);
            border: 1px solid rgba(0, 212, 255, .2);
            color: var(--bs-cyan);
            border-radius: 999px;
            padding: .15rem .6rem;
            font-size: .75rem;
            font-weight: 500;
        }
        .service-card.featured {
            display: grid;
            grid-template-columns: 1.2fr .8fr;
            gap: 1.2rem;
            align-items: center;
        }
        .service-card.featured .card-visual {
            height: 100%;
            min-height: 160px;
            border-radius: 12px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .service-card.featured .card-content {
            display: flex;
            flex-direction: column;
        }
        .cover-card {
            background: var(--bs-card-bg);
            backdrop-filter: blur(16px);
            border: 1px solid var(--bs-card-border);
            border-radius: var(--bs-radius);
            overflow: hidden;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
        }
        .cover-card:hover {
            background: var(--bs-card-hover-bg);
            border-color: var(--bs-card-hover-border);
            box-shadow: var(--bs-shadow);
            transform: translateY(-4px);
        }
        .cover-card .cover-img {
            height: 160px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .cover-card .cover-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 21, 38, .55), transparent 50%);
        }
        .cover-card .cover-body {
            padding: 1.2rem 1.3rem 1.4rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .cover-card .cover-badge {
            align-self: flex-start;
            background: rgba(0, 212, 255, .1);
            border: 1px solid rgba(0, 212, 255, .2);
            color: var(--bs-cyan);
            border-radius: 999px;
            padding: .2rem .7rem;
            font-size: .75rem;
            font-weight: 500;
            margin-bottom: .7rem;
        }
        .cover-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: #E6EDF7;
            margin-bottom: .4rem;
            line-height: 1.4;
        }
        .cover-card p {
            font-size: .85rem;
            line-height: 1.65;
            color: #94A3B8;
            flex: 1;
            margin-bottom: .8rem;
        }
        .cover-card .cover-date {
            font-size: .78rem;
            color: var(--bs-text-weak);
            display: flex;
            align-items: center;
            gap: .4rem;
        }
        .category-intro {
            background: linear-gradient(135deg, rgba(255, 255, 255, .02), rgba(255, 255, 255, .005));
            border-top: 1px solid rgba(255, 255, 255, .05);
            border-bottom: 1px solid rgba(255, 255, 255, .05);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .intro-visual {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            min-height: 320px;
            background-size: cover;
            background-position: center;
            box-shadow: 0 8px 40px rgba(0, 0, 0, .35);
        }
        .intro-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 212, 255, .08), transparent 60%, rgba(245, 184, 65, .06));
        }
        .intro-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #E6EDF7;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .intro-content p {
            margin-bottom: 1.6rem;
            color: #94A3B8;
            line-height: 1.8;
        }
        .intro-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: .8rem;
        }
        .intro-points li {
            display: flex;
            align-items: flex-start;
            gap: .7rem;
            font-size: .9rem;
            color: #CBD5E1;
        }
        .intro-points li svg,
        .intro-points li .tick {
            width: 20px;
            height: 20px;
            min-width: 20px;
            border-radius: 50%;
            background: rgba(0, 212, 255, .15);
            color: var(--bs-cyan);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: .7rem;
            font-weight: 700;
            margin-top: 2px;
        }
        .faq-section {
            background: transparent;
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .faq-item {
            background: rgba(255, 255, 255, .04);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color .2s;
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, .14);
        }
        .faq-item.open {
            border-color: rgba(0, 212, 255, .3);
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.4rem;
            cursor: pointer;
            font-size: .95rem;
            font-weight: 500;
            color: #E6EDF7;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 1rem;
        }
        .faq-q:focus {
            outline: 2px solid rgba(0, 212, 255, .4);
            outline-offset: -2px;
        }
        .faq-q .chevron {
            transition: transform .3s;
            color: #94A3B8;
            min-width: 20px;
            font-size: 1.1rem;
            transform: rotate(0deg);
        }
        .faq-item.open .faq-q .chevron {
            transform: rotate(180deg);
            color: var(--bs-cyan);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
            padding: 0 1.4rem;
        }
        .faq-item.open .faq-a {
            max-height: 400px;
            padding-bottom: 1.2rem;
        }
        .faq-a p {
            font-size: .9rem;
            line-height: 1.75;
            color: #94A3B8;
            border-left: 3px solid rgba(0, 212, 255, .4);
            padding-left: 1rem;
        }
        .cta-section {
            position: relative;
            padding: 5rem 0;
            overflow: hidden;
        }
        .cta-inner {
            background: linear-gradient(135deg, rgba(0, 212, 255, .08), rgba(245, 184, 65, .04)), rgba(255, 255, 255, .03);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 212, 255, .15);
            border-radius: 24px;
            padding: 3.5rem 2.5rem;
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #E6EDF7;
            margin-bottom: .5rem;
        }
        .cta-inner p {
            color: #94A3B8;
            margin-bottom: 1.8rem;
            font-size: .95rem;
        }
        .cta-glow {
            position: absolute;
            top: -60%;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(0, 212, 255, .15), transparent 70%);
            filter: blur(50px);
            pointer-events: none;
        }
        .site-footer {
            background: #050A12;
            border-top: 1px solid rgba(255, 255, 255, .05);
            padding: 3.5rem 0 1.8rem;
            position: relative;
        }
        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 212, 255, .4), rgba(245, 184, 65, .3), transparent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: .6rem;
            font-size: 1.1rem;
            font-weight: 700;
            color: #E6EDF7;
            margin-bottom: .8rem;
        }
        .footer-brand p {
            font-size: .85rem;
            color: #64748B;
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-social {
            display: flex;
            gap: .7rem;
            margin-top: 1rem;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: .8rem;
            color: #94A3B8;
            transition: all .2s;
        }
        .footer-social a:hover {
            color: var(--bs-cyan);
            border-color: rgba(0, 212, 255, .4);
            background: rgba(0, 212, 255, .08);
        }
        .footer-col h4 {
            font-size: .95rem;
            font-weight: 600;
            color: #E6EDF7;
            margin-bottom: 1rem;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: .55rem;
        }
        .footer-col ul a {
            font-size: .85rem;
            color: #64748B;
            transition: color .2s;
        }
        .footer-col ul a:hover {
            color: var(--bs-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .05);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: .5rem;
            font-size: .8rem;
            color: #64748B;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -300px;
            width: 280px;
            height: 100vh;
            background: rgba(7, 13, 26, .97);
            backdrop-filter: blur(20px);
            z-index: 200;
            padding: 80px 1.8rem 2rem;
            display: flex;
            flex-direction: column;
            gap: 1.4rem;
            transition: right .35s ease;
            box-shadow: -10px 0 40px rgba(0, 0, 0, .4);
        }
        .mobile-drawer.open {
            right: 0;
        }
        .mobile-drawer a {
            font-size: 1.1rem;
            color: #CBD5E1;
            font-weight: 500;
            transition: color .2s;
        }
        .mobile-drawer a:hover,
        .mobile-drawer a.active {
            color: var(--bs-cyan);
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, .5);
            z-index: 190;
            opacity: 0;
            pointer-events: none;
            transition: opacity .3s;
        }
        .drawer-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }
        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: .8rem;
            color: #64748B;
            margin-bottom: 1.2rem;
        }
        .hero-breadcrumb a {
            color: #94A3B8;
            transition: color .2s;
        }
        .hero-breadcrumb a:hover {
            color: var(--bs-cyan);
        }
        .hero-breadcrumb .sep {
            color: #475569;
        }
        .hero-breadcrumb .curr {
            color: var(--bs-cyan);
        }
        @media(max-width:1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .hero-stats {
                grid-template-columns: repeat(3, 1fr);
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-card.featured {
                grid-column: span 2;
                grid-template-columns: 1fr 1fr;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }
        @media(max-width:768px) {
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .hero {
                padding: 120px 0 60px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero-sub {
                font-size: .95rem;
            }
            .hero-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: .6rem;
            }
            .stat-item {
                padding: .8rem;
            }
            .stat-item .num {
                font-size: 1.2rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .service-card.featured {
                grid-column: span 1;
                grid-template-columns: 1fr;
            }
            .service-card.featured .card-visual {
                min-height: 120px;
            }
            .section {
                padding: 3.5rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-inner {
                padding: 2.5rem 1.5rem;
            }
            .cta-inner h2 {
                font-size: 1.4rem;
            }
        }
        @media(max-width:520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero-stats {
                grid-template-columns: 1fr 1fr;
            }
            .hero-panel {
                padding: 1.2rem;
            }
            .channel-nav-inner {
                flex-wrap: nowrap;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .channel-nav-inner::-webkit-scrollbar {
                display: none;
            }
            .channel-pill {
                white-space: nowrap;
                flex-shrink: 0;
            }
        }