/* roulang page: index */
:root {
            --primary: #1758B2;
            --primary-dark: #0E3E82;
            --accent: #00C9E8;
            --accent-light: rgba(0, 201, 232, 0.12);
            --gold: #FF9F1C;
            --bg: #F4F7FB;
            --card-bg: #FFFFFF;
            --border: #E3EAF3;
            --text-main: #12233B;
            --text-secondary: #5A6B85;
            --dark-bg: #0A1324;
            --dark-text: #A9B8D0;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --shadow-card: 0 8px 24px rgba(18, 35, 59, 0.06);
            --shadow-hover: 0 14px 36px rgba(18, 35, 59, 0.12);
            --container: 1200px;
            --gap: 24px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style-position: inside;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: 96px 0;
        }

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

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

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
        }

        .text-center {
            text-align: center;
        }

        /* 但 header 固定 */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: var(--dark-bg);
            height: 64px;
            box-shadow: 0 4px 20px rgba(10, 19, 36, 0.3);
        }

        .header::after {
            content: "";
            display: block;
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), rgba(0, 201, 232, 0));
            pointer-events: none;
        }

        .header-inner {
            max-width: var(--container);
            margin: 0 auto;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            gap: 24px;
        }

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

        .header-logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent), var(--primary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -1px;
        }

        .header-logo-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .header-logo-text span {
            color: var(--accent);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }

        .header-nav a.nav-link {
            display: inline-block;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--dark-text);
            border-radius: 6px;
            transition: color 0.25s, background 0.25s;
            position: relative;
            white-space: nowrap;
        }

        .header-nav a.nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .header-nav a.nav-link.active {
            color: #fff;
            background: rgba(0, 201, 232, 0.08);
        }

        .header-nav a.nav-link.active::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--accent);
            box-shadow: 0 0 12px var(--accent);
            border-radius: 2px;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent);
            color: var(--dark-bg);
            font-size: 14px;
            font-weight: 700;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            transition: box-shadow 0.25s, transform 0.15s, filter 0.25s;
            line-height: 1.4;
        }

        .btn-neon:hover {
            box-shadow: 0 0 20px rgba(0, 201, 232, 0.4);
            filter: brightness(1.08);
            color: var(--dark-bg);
        }

        .btn-neon:active {
            transform: scale(0.97);
            box-shadow: 0 0 8px rgba(0, 201, 232, 0.3);
        }

        .btn-neon:focus-visible,
        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .accordion-btn:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            transition: background 0.25s, transform 0.15s, box-shadow 0.25s;
            line-height: 1.5;
            border: none;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 8px 20px rgba(23, 88, 178, 0.25);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: #fff;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            transition: border-color 0.25s, color 0.25s, background 0.25s, box-shadow 0.25s;
            line-height: 1.5;
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 4px 14px rgba(23, 88, 178, 0.08);
        }

        .btn-secondary:active {
            transform: scale(0.98);
        }

        /* Hamburger */
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            padding: 0;
            transition: border-color 0.2s;
        }

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

        .hamburger span {
            width: 20px;
            height: 2px;
            background-color: #fff;
            display: block;
            transition: transform 0.3s, opacity 0.3s;
        }

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

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

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

        /* Mobile drawer */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: var(--dark-bg);
            z-index: 999;
            padding: 16px 24px 24px;
            border-bottom: 2px solid var(--accent);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav a {
            display: block;
            padding: 12px 8px;
            color: var(--dark-text);
            font-size: 15px;
            border-left: 3px solid transparent;
            transition: color 0.2s, border-color 0.2s, background 0.2s;
        }

        .mobile-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }

        .mobile-nav a.active {
            color: #fff;
            border-left-color: var(--accent);
            background: rgba(0, 201, 232, 0.1);
            box-shadow: -6px 0 12px rgba(0, 201, 232, 0.15);
        }

        body.mobile-open {
            overflow: hidden;
        }

        /* Hero */
        .hero {
            padding: 168px 0 96px;
            background-color: var(--bg);
            background-image: linear-gradient(135deg, #f0f5fc 0%, #e8f0fa 100%);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') no-repeat top right / 45% auto;
            opacity: 0.25;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 64px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-content h1 .accent-text {
            color: var(--primary);
            position: relative;
        }

        .hero-content h1 .accent-text::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 0;
            width: 100%;
            height: 10px;
            background: var(--accent-light);
            border-radius: 4px;
            z-index: -1;
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 560px;
            margin-bottom: 36px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }

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

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-badge);
            border: 1px solid var(--border);
            box-shadow: 0 2px 8px rgba(18, 35, 59, 0.04);
        }

        .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
        }

        .hero-image {
            position: relative;
        }

        .hero-image img {
            border-radius: 16px;
            box-shadow: var(--shadow-hover);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .hero-image-float {
            position: absolute;
            bottom: 24px;
            left: -20px;
            background: #fff;
            border-radius: 12px;
            padding: 14px 20px;
            box-shadow: var(--shadow-hover);
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
        }

        .hero-image-float .icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--accent-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        /* Pain points */
        .pain-points {
            padding: 96px 0;
            background: #fff;
        }

        .pain-points-grid {
            display: grid;
            grid-template-columns: repeat(2, 1 fr);
            gap: 48px;
            margin-top: 48px;
            position: relative;
        }

        .pain-points-grid::before {
            content: "";
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 1px;
            background: linear-gradient(to bottom, var(--accent), transparent);
            opacity: 0.4;
        }

        .pain-item {
            display: flex;
            gap: 20px;
            padding-left: 12px;
            position: relative;
        }

        .pain-item::before {
            content: "";
            position: absolute;
            left: -5px;
            top: 8px;
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 0 4px rgba(0, 201, 232, 0.15);
        }

        .pain-num {
            font-family: var(--font-mono);
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            background: var(--accent-light);
            padding: 2px 8px;
            border-radius: 4px;
            white-space: nowrap;
            height: fit-content;
            min-width: 36px;
            text-align: center;
        }

        .pain-text h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }

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

        /* Solution */
        .solution {
            padding: 96px 0;
            background-color: var(--bg);
        }

        .solution-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            margin-bottom: 80px;
        }

        .solution-block:last-child {
            margin-bottom: 0;
        }

        .solution-block.reverse .solution-image {
            order: 1;
        }

        .solution-block.reverse .solution-content {
            order: 2;
        }

        .solution-content .tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .solution-content h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .solution-content p {
            color: var(--text-secondary);
            font-size: 15px;
            margin-bottom: 20px;
            line-height: 1.8;
        }

        .solution-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .solution-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text-main);
        }

        .solution-list li::before {
            content: "✓";
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--accent-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            margin-top: 2px;
        }

        .solution-image {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: #fff;
            padding: 12px;
            border: 1px solid var(--border);
        }

        .solution-image img {
            border-radius: 12px;
            width: 100%;
            object-fit: cover;
            aspect-ratio: 5/4;
        }

        .solution-block.with-bg {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 40px;
            border-radius: 20px;
            position: relative;
        }

        .solution-block.with-bg::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, #fff 0%, rgba(255, 255, 255, 0.92) 60%, rgba(255, 255, 255, 0.75) 100%);
            border-radius: 20px;
        }

        .solution-block.with-bg>* {
            position: relative;
            z-index: 1;
        }

        /* Stats */
        .stats {
            background: var(--dark-bg);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .stats::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), transparent);
            opacity: 0.7;
        }

        .stats-header {
            margin-bottom: 40px;
        }

        .stats-header h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 800;
        }

        .stats-header p {
            color: var(--dark-text);
            margin-top: 8px;
        }

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

        .stat-item {
            text-align: center;
            padding: 16px 0;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .stat-number {
            font-family: var(--font-mono);
            font-size: 48px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            font-feature-settings: "tnum";
        }

        .stat-label {
            color: var(--dark-text);
            font-size: 14px;
            margin-top: 8px;
            letter-spacing: 1px;
        }

        /* Testimonials */
        .testimonials {
            padding: 96px 0;
            background: #fff;
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 40px;
        }

        .testimonial-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: transform 0.25s, box-shadow 0.25s;
        }

        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .testimonial-stars {
            color: var(--gold);
            font-size: 14px;
            letter-spacing: 2px;
            margin-bottom: 12px;
        }

        .testimonial-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
            font-style: italic;
        }

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

        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
        }

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

        .testimonial-role {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* CTA band */
        .cta-band {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 64px 0;
            text-align: center;
        }

        .cta-band h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-band p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 15px;
        }

        .cta-band .btn-neon {
            font-size: 16px;
            padding: 14px 40px;
        }

        /* CMS list */
        .cms-section {
            padding: 96px 0;
            background: var(--bg);
        }

        .cms-grid {
            display: grid;
            grid-template-columns: 1.3fr 0.7fr;
            gap: 32px;
            align-items: start;
        }

        .cms-feature {
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s, box-shadow 0.25s;
            border: 1px solid var(--border);
        }

        .cms-feature:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .cms-feature img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }

        .cms-feature-body {
            padding: 24px;
        }

        .cms-feature-body .cms-tag {
            font-size: 12px;
            background: var(--accent-light);
            color: var(--primary);
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            font-weight: 600;
            display: inline-block;
            margin-bottom: 10px;
        }

        .cms-feature-body h3 {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .cms-feature-body h3 a {
            color: var(--text-main);
        }

        .cms-feature-body h3 a:hover {
            color: var(--primary);
        }

        .cms-feature-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .cms-meta {
            font-size: 13px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .cms-meta time {
            font-family: var(--font-mono);
            font-variant-numeric: tabular-nums;
        }

        .cms-feature-link {
            display: inline-block;
            margin-top: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .cms-list {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            padding: 8px 0;
            box-shadow: var(--shadow-card);
        }

        .cms-list-item {
            display: flex;
            gap: 14px;
            padding: 16px 24px;
            border-bottom: 1px solid var(--border);
            transition: background 0.2s;
            align-items: flex-start;
        }

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

        .cms-list-item:hover {
            background: var(--bg);
        }

        .cms-list-meta {
            flex-shrink: 0;
            min-width: 70px;
        }

        .cms-list-meta time {
            font-size: 12px;
            color: var(--text-secondary);
            font-family: var(--font-mono);
        }

        .cms-list-content {
            flex: 1;
            min-width: 0;
        }

        .cms-list-content h4 {
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 4px;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .cms-list-content h4 a {
            color: var(--text-main);
        }

        .cms-list-content h4 a:hover {
            color: var(--primary);
        }

        .cms-list-content p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
        }

        .cms-list-tag {
            display: inline-block;
            font-size: 11px;
            color: var(--accent);
            background: var(--accent-light);
            padding: 1px 8px;
            border-radius: 6px;
            margin-top: 4px;
            font-weight: 600;
        }

        .cms-empty {
            grid-column: 1 / -1;
            border: 2px dashed var(--border);
            border-radius: var(--radius-card);
            padding: 48px 24px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 15px;
        }

        /* FAQ */
        .faq {
            padding: 96px 0;
            background: #fff;
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 16px;
            background: #fff;
            overflow: hidden;
            transition: box-shadow 0.25s;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }

        .accordion-btn {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 16px;
            text-align: left;
            padding: 20px 24px;
            background: #fff;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            transition: background 0.2s;
        }

        .accordion-btn:hover {
            background: var(--bg);
        }

        .accordion-btn .faq-mark {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--accent-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 800;
        }

        .accordion-btn .faq-arrow {
            margin-left: auto;
            transition: transform 0.3s;
            color: var(--text-secondary);
            font-size: 14px;
            flex-shrink: 0;
        }

        .accordion-btn[aria-expanded="true"] .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 24px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .faq-answer.open {
            max-height: 600px;
            padding: 0 24px 20px;
        }

        /* Footer */
        .footer {
            background: var(--dark-bg);
            padding: 64px 0 32px;
            position: relative;
        }

        .footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), transparent);
            opacity: 0.6;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.8fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

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

        .footer-brand-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
        }

        .footer-brand-text span {
            color: var(--accent);
        }

        .footer-brand p {
            color: var(--dark-text);
            font-size: 14px;
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

        .footer-links a {
            color: var(--dark-text);
            font-size: 14px;
            transition: color 0.2s, padding-left 0.2s;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-contact p {
            color: var(--dark-text);
            font-size: 14px;
            margin-bottom: 8px;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            text-align: center;
            color: #5a6b85;
            font-size: 13px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .header-nav a.nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }

            .hero-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero {
                padding: 140px 0 64px;
            }

            .hero-image {
                margin-top: 8px;
            }

            .hero-image img {
                max-width: 560px;
                margin: 0 auto;
            }

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .stat-item:nth-child(3) {
                border-left: none;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .section {
                padding: 64px 0;
            }

            .header-desktop-nav {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .header-inner {
                padding: 0 16px;
            }

            .header-logo-text {
                font-size: 18px;
            }

            .hero-content h1 {
                font-size: 32px;
            }

            .hero {
                padding: 120px 0 48px;
            }

            .hero-badges {
                gap: 8px;
            }

            .pain-points-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .solution-block {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .solution-block.reverse .solution-image {
                order: 0;
            }

            .solution-block.reverse .solution-content {
                order: 1;
            }

            .solution-block.with-bg {
                padding: 24px;
            }

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

            .stat-number {
                font-size: 36px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .section-header h2 {
                font-size: 26px;
            }

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

            .cms-list-item {
                flex-direction: column;
                gap: 8px;
                padding: 14px 16px;
            }

            .cms-list-meta {
                min-width: 0;
            }
        }

        @media (max-width: 520px) {
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

            .hero-image-float {
                bottom: 12px;
                left: 12px;
                right: 12px;
                padding: 10px 14px;
                font-size: 13px;
            }

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

            .stat-item {
                border-left: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                padding: 20px 0;
            }

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

            .header-cta .btn-neon {
                padding: 8px 14px;
                font-size: 13px;
            }

            .btn-neon span.cta-text {
                display: none;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1758B2;
            --primary-dark: #0E3E82;
            --accent: #00C9E8;
            --amber: #FF9F1C;
            --bg: #F4F7FB;
            --card: #FFFFFF;
            --border: #E3EAF3;
            --text: #12233B;
            --muted: #5A6B85;
            --dark: #0A1324;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --shadow-card: 0 8px 24px rgba(18, 35, 59, 0.06);
            --shadow-hover: 0 14px 36px rgba(18, 35, 59, 0.12);
            --container: 1200px;
            --font-mono: "SF Mono", "JetBrains Mono", "Cascadia Code", Consolas, monospace;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style-position: inside;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-head {
            max-width: 720px;
            margin-bottom: 48px;
        }
        .section-head .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--primary);
            background: rgba(23, 88, 178, 0.08);
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text);
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--muted);
        }
        section {
            padding: 96px 0;
        }
        .btn-primary,
        .btn-outline,
        .btn-neon,
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            transition: all 0.25s ease;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 8px 24px rgba(23, 88, 178, 0.25);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-outline {
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-neon {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--dark);
            font-weight: 700;
            font-size: 14px;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
        }
        .btn-neon:hover {
            background: #33daf4;
            box-shadow: 0 0 24px rgba(0, 201, 232, 0.45);
            color: var(--dark);
        }
        .btn-neon:active {
            transform: scale(0.98);
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
        }
        .btn-outline-light:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        /* ===== Header ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--dark);
            z-index: 100;
            transition: box-shadow 0.3s ease;
        }
        .header.scrolled {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
        }
        .header::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent) 0%, rgba(0, 201, 232, 0.35) 55%, transparent 100%);
            box-shadow: 0 0 12px rgba(0, 201, 232, 0.35);
        }
        .header-inner {
            max-width: var(--container);
            height: 100%;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .header-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .header-logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent), #79e8ff);
            color: var(--dark);
            font-size: 14px;
            font-weight: 800;
            border-radius: 10px;
            box-shadow: 0 0 18px rgba(0, 201, 232, 0.35);
        }
        .header-logo-text {
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .header-logo-text span {
            color: var(--accent);
        }
        .header-desktop-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            color: #a9b8d0;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 2px;
            position: relative;
            transition: color 0.25s ease, text-shadow 0.25s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #ffffff;
        }
        .nav-link.active {
            color: #ffffff;
            text-shadow: 0 0 12px rgba(0, 201, 232, 0.55);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--accent);
            box-shadow: 0 0 12px var(--accent);
        }
        .header-cta {
            flex-shrink: 0;
        }
        .header-cta .btn-neon {
            white-space: nowrap;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: 0;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            transition: background 0.25s ease;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .hamburger span {
            width: 24px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            padding: 148px 0 84px;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 56px;
            align-items: center;
        }
        .hero-badge {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(23, 88, 178, 0.08);
            border: 1px solid rgba(23, 88, 178, 0.12);
            padding: 5px 16px;
            border-radius: var(--radius-badge);
            margin-bottom: 22px;
            letter-spacing: 1px;
        }
        .hero-copy h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text);
            margin-bottom: 18px;
        }
        .hero-copy h1 .highlight {
            color: var(--primary);
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: var(--muted);
            max-width: 520px;
            margin-bottom: 30px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .hero-tags span {
            font-size: 13px;
            color: var(--primary);
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-badge);
            padding: 4px 14px;
        }
        .hero-visual img {
            border-radius: 16px;
            box-shadow: var(--shadow-hover);
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }

        /* ===== Topic Cards ===== */
        .topics-section {
            background: var(--bg);
        }
        .topics-list {
            display: flex;
            gap: 24px;
            align-items: flex-start;
        }
        .topic-card {
            flex: 1;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .topic-card:nth-child(2) {
            margin-top: 36px;
        }
        .topic-card:nth-child(3) {
            margin-top: 14px;
        }
        .topic-card:nth-child(4) {
            margin-top: 48px;
        }
        .topic-media {
            border-radius: 10px;
            overflow: hidden;
            margin-bottom: 18px;
        }
        .topic-media img {
            width: 100%;
            height: 108px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .topic-card:hover .topic-media img {
            transform: scale(1.04);
        }
        .topic-num {
            font-family: var(--font-mono);
            font-size: 24px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 8px;
            letter-spacing: 1px;
        }
        .topic-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .topic-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 18px;
            flex-grow: 1;
        }
        .topic-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .topic-link span {
            transition: transform 0.25s ease;
        }
        .topic-link:hover span {
            transform: translateX(4px);
        }
        .topic-link:hover {
            color: var(--primary-dark);
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            background: var(--card);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: start;
        }
        .faq-group {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: box-shadow 0.3s ease;
        }
        .faq-group:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-group-head {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border);
        }
        .faq-group-icon {
            font-family: var(--font-mono);
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            background: rgba(23, 88, 178, 0.08);
            border-radius: 8px;
            padding: 4px 10px;
        }
        .faq-group-head h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            width: 100%;
            padding: 18px 4px;
            text-align: left;
            background: none;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .q-mark {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 800;
        }
        .q-text {
            flex: 1;
        }
        .q-arrow {
            font-size: 18px;
            color: var(--muted);
            transition: transform 0.3s ease, color 0.3s ease;
            line-height: 1;
        }
        .faq-item.active .q-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 4px;
        }
        .faq-item.active .faq-answer {
            max-height: 240px;
            padding: 0 4px 20px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
            padding-left: 38px;
        }

        /* ===== Process Section ===== */
        .process-section {
            background: linear-gradient(rgba(10, 19, 36, 0.93), rgba(10, 19, 36, 0.93)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            color: #fff;
        }
        .process-head {
            max-width: 720px;
            margin-bottom: 48px;
        }
        .process-head .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--accent);
            background: rgba(0, 201, 232, 0.12);
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            margin-bottom: 14px;
        }
        .process-head h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .process-head p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.65);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .process-step {
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-card);
            padding: 30px;
            transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
            position: relative;
        }
        .process-step:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 201, 232, 0.45);
            background: rgba(0, 201, 232, 0.06);
        }
        .step-num {
            font-family: var(--font-mono);
            font-size: 40px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1;
            display: block;
            margin-bottom: 20px;
            text-shadow: 0 0 20px rgba(0, 201, 232, 0.35);
        }
        .process-step h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }
        .process-step p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.75;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--dark);
            padding: 88px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -100px;
            right: -80px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 201, 232, 0.16), transparent 70%);
        }
        .cta-inner {
            display: flex;
            justify-content: center;
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .cta-content {
            max-width: 680px;
        }
        .cta-content h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 14px;
        }
        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 32px;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--dark);
            border-top: 2px solid rgba(0, 201, 232, 0.5);
            padding: 64px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-brand {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-brand-text {
            font-size: 18px;
            font-weight: 800;
            color: #fff;
        }
        .footer-brand-text span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 14px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: #a9b8d0;
            font-size: 14px;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.8;
            margin-bottom: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .header-inner {
                padding: 0 20px;
            }
            .topics-list {
                flex-wrap: wrap;
            }
            .topic-card {
                flex: 1 1 calc(50% - 24px);
                min-width: 240px;
            }
        }
        @media (max-width: 991px) {
            .header-desktop-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--dark);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 4px;
                transform: translateY(-120%);
                transition: transform 0.35s ease;
                border-bottom: 2px solid rgba(0, 201, 232, 0.35);
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
            }
            .header-desktop-nav.open {
                transform: translateY(0);
            }
            .header-desktop-nav .nav-link {
                width: 100%;
                padding: 13px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .header-desktop-nav .nav-link.active {
                padding-left: 14px;
                border-left: 3px solid var(--accent);
                background: rgba(0, 201, 232, 0.05);
            }
            .header-desktop-nav .nav-link.active::after {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-cta {
                margin-left: auto;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-visual img {
                max-width: 640px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
                max-width: 560px;
                margin: 0 auto;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            section {
                padding: 64px 0;
            }
            .header-inner {
                padding: 0 16px;
                gap: 12px;
            }
            .header-cta .btn-neon {
                font-size: 13px;
                padding: 8px 14px;
            }
            .page-hero {
                padding: 120px 0 56px;
            }
            .hero-copy h1 {
                font-size: 30px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                padding: 10px 20px;
                font-size: 14px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .section-head p {
                font-size: 15px;
            }
            .topics-list {
                flex-direction: column;
                gap: 16px;
            }
            .topic-card,
            .topic-card:nth-child(2),
            .topic-card:nth-child(3),
            .topic-card:nth-child(4) {
                margin-top: 0;
                flex: none;
                width: 100%;
            }
            .topic-media img {
                height: 130px;
            }
            .faq-group {
                padding: 20px;
            }
            .faq-question {
                font-size: 14px;
            }
            .faq-answer p {
                font-size: 13px;
                padding-left: 0;
            }
            .process-head h2 {
                font-size: 26px;
            }
            .process-step {
                padding: 24px;
            }
            .cta-content h2 {
                font-size: 26px;
            }
            .cta-content p {
                font-size: 15px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                margin-bottom: 32px;
            }
            .footer-bottom p {
                font-size: 12px;
            }
        }
        @media (max-width: 480px) {
            .header-logo-text {
                font-size: 16px;
            }
            .hero-copy h1 {
                font-size: 27px;
            }
            .hero-tags span {
                font-size: 12px;
                padding: 3px 10px;
            }
        }

/* roulang page: article */
:root {
            --primary: #1758B2;
            --primary-deep: #0E3E82;
            --accent: #00C9E8;
            --accent-soft: rgba(0, 201, 232, .12);
            --gold: #FF9F1C;
            --bg: #F4F7FB;
            --card: #FFFFFF;
            --border: #E3EAF3;
            --text: #12233B;
            --text-2: #5A6B85;
            --dark: #0A1324;
            --dark-2: #13213A;
            --radius: 12px;
            --radius-btn: 8px;
            --shadow: 0 8px 24px rgba(18, 35, 59, .06);
            --shadow-lg: 0 14px 36px rgba(18, 35, 59, .12);
            --container: 1200px;
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --font-num: "SF Mono", "Roboto Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            padding-top: 64px;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        h1,
        h2,
        h3,
        h4 {
            line-height: 1.2;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header 深色霓虹导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: rgba(10, 19, 36, .96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: 0 4px 24px rgba(0, 0, 0, .28);
        }

        .header::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent) 0%, rgba(0, 201, 232, .35) 45%, transparent 90%);
            box-shadow: 0 0 12px rgba(0, 201, 232, .35);
        }

        .header-inner {
            max-width: var(--container);
            height: 100%;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

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

        .header-logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent), var(--primary) 90%);
            color: #fff;
            font-weight: 800;
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0, 201, 232, .28);
        }

        .header-logo-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: .01em;
        }

        .header-logo-text span {
            color: var(--accent);
            font-weight: 600;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            position: relative;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: #A9B8D0;
            border-radius: 8px;
            transition: color .2s, background .2s;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .06);
        }

        .nav-link.active {
            color: #fff;
            font-weight: 600;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
            box-shadow: 0 0 12px rgba(0, 201, 232, .6);
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn-neon {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent);
            color: var(--dark);
            font-weight: 700;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            transition: transform .2s, box-shadow .2s, background .2s;
            white-space: nowrap;
        }

        .btn-neon:hover {
            background: #33d9f0;
            box-shadow: 0 0 20px rgba(0, 201, 232, .45);
            transform: translateY(-1px);
        }

        .btn-neon:active {
            transform: scale(.98);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: 10px;
            cursor: pointer;
            padding: 0 10px;
            transition: border-color .2s;
        }

        .hamburger span {
            display: block;
            height: 2px;
            width: 100%;
            background: #E3EAF3;
            border-radius: 2px;
            transition: transform .25s, opacity .25s, background .25s;
        }

        .hamburger.is-open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
            background: var(--accent);
        }

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

        .hamburger.is-open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
            background: var(--accent);
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            background: linear-gradient(135deg, #0E3E82 0%, #0A1324 60%, #13213A 100%);
            padding: 72px 0 56px;
            overflow: hidden;
        }

        .article-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 70%;
            opacity: .22;
        }

        .article-banner::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(10, 19, 36, .88) 0%, rgba(10, 19, 36, .62) 55%, rgba(10, 19, 36, .38) 100%);
        }

        .article-banner .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: #8FA3C2;
            margin-bottom: 28px;
        }

        .breadcrumb a {
            color: #8FA3C2;
            transition: color .2s;
        }

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

        .breadcrumb-sep {
            color: #4A5C76;
            font-size: 12px;
        }

        .breadcrumb-current {
            color: #D6E0F0;
            max-width: 300px;
            overflow: hidden;
            white-space: nowrap;
            text-overflow: ellipsis;
        }

        .article-title {
            color: #fff;
            font-size: 42px;
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: -.02em;
            max-width: 880px;
            margin-bottom: 22px;
            text-shadow: 0 2px 18px rgba(0, 0, 0, .25);
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 14px;
            color: #A9B8D0;
        }

        .meta-badge {
            background: var(--accent-soft);
            border: 1px solid rgba(0, 201, 232, .4);
            color: #8FE8F7;
            padding: 4px 14px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 13px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .meta-dot {
            display: inline-block;
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--accent);
            margin-right: 6px;
            vertical-align: middle;
        }

        /* ===== 正文阅读区 ===== */
        .article-section {
            padding: 56px 0 80px;
        }

        .article-layout {
            max-width: 760px;
            margin: 0 auto;
        }

        .article-content {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 52px 60px;
            box-shadow: var(--shadow);
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--text);
            margin: 40px 0 16px;
            line-height: 1.3;
            letter-spacing: -.01em;
        }

        .article-content h2:first-child {
            margin-top: 0;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin: 28px 0 12px;
            line-height: 1.4;
        }

        .article-content p {
            font-size: 16px;
            line-height: 1.8;
            color: #26354F;
            margin-bottom: 18px;
        }

        .article-content a {
            color: var(--primary);
            font-weight: 600;
            border-bottom: 1px solid rgba(23, 88, 178, .2);
            transition: color .2s, border-color .2s;
        }

        .article-content a:hover {
            color: var(--primary-deep);
            border-color: var(--primary);
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 20px;
            padding-left: 24px;
            line-height: 1.8;
            color: #26354F;
        }

        .article-content ul li {
            list-style: disc;
            margin-bottom: 8px;
        }

        .article-content ol li {
            list-style: decimal;
            margin-bottom: 8px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: #F0FAFD;
            padding: 16px 20px;
            border-radius: 0 10px 10px 0;
            margin: 24px 0;
            color: #33455F;
        }

        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: var(--shadow);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
            font-feature-settings: "tnum";
        }

        .article-content th,
        .article-content td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }

        .article-content th {
            background: #F0F5FB;
            font-weight: 600;
            color: var(--text);
        }

        .article-content tr:nth-child(even) td {
            background: #FAFCFE;
        }

        .article-content code {
            background: #F0F5FB;
            border: 1px solid var(--border);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
            color: var(--primary-deep);
        }

        .article-content hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 36px 0;
        }

        /* ===== 未找到状态 ===== */
        .not-found-card {
            text-align: center;
            padding: 48px 20px;
        }

        .not-found-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .not-found-card h2 {
            font-size: 24px;
            margin-bottom: 10px;
        }

        .not-found-card p {
            color: var(--text-2);
            margin-bottom: 24px;
        }

        .btn-primary {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            transition: background .2s, transform .2s, box-shadow .2s;
        }

        .btn-primary:hover {
            background: var(--primary-deep);
            box-shadow: 0 8px 20px rgba(23, 88, 178, .28);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(.98);
        }

        /* ===== 文尾标签 / 分页 ===== */
        .article-foot {
            margin-top: 32px;
        }

        .article-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .tags-label {
            font-weight: 600;
            color: var(--text-2);
            font-size: 14px;
            margin-right: 4px;
        }

        .tag-item {
            display: inline-block;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--primary);
            font-size: 13px;
            padding: 5px 14px;
            border-radius: 999px;
            transition: .2s;
        }

        .tag-item:hover {
            border-color: var(--accent);
            color: var(--primary-deep);
            box-shadow: 0 0 10px rgba(0, 201, 232, .15);
        }

        .pager-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin: 8px 0 24px;
        }

        .pager-link {
            display: block;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 18px 20px;
            transition: .25s;
        }

        .pager-link:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .pager-link small {
            display: block;
            font-size: 12px;
            color: var(--text-2);
            margin-bottom: 6px;
        }

        .pager-link strong {
            display: block;
            font-size: 15px;
            line-height: 1.5;
            color: var(--text);
            font-weight: 600;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .pager-next {
            text-align: right;
        }

        .back-link {
            display: inline-block;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: color .2s;
        }

        .back-link:hover {
            color: var(--primary-deep);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 72px 0 88px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 800;
            letter-spacing: -.01em;
            color: var(--text);
        }

        .related-subtitle {
            color: var(--text-2);
            font-size: 15px;
            margin: 10px 0 36px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            display: flex;
            flex-direction: column;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: transform .3s, box-shadow .3s;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .related-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .45s;
        }

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

        .related-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(10, 19, 36, .78);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .18);
        }

        .related-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-body h3 {
            font-size: 17px;
            line-height: 1.45;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .related-body p {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .related-link {
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            transition: color .2s;
        }

        .related-card:hover .related-link {
            color: var(--primary-deep);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--dark);
            color: #A9B8D0;
            padding: 64px 0 0;
            position: relative;
        }

        .footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), rgba(0, 201, 232, .2) 50%, transparent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 48px;
        }

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

        .footer-brand-text {
            color: #fff;
            font-size: 19px;
            font-weight: 800;
        }

        .footer-brand-text span {
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: #8FA3C2;
            max-width: 300px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links li + li {
            margin-top: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: #A9B8D0;
            transition: color .2s;
        }

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

        .footer-contact p {
            font-size: 14px;
            color: #8FA3C2;
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #6B7C95;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .related-card:last-child {
                grid-column: span 2;
            }

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

            .article-title {
                font-size: 36px;
            }
        }

        @media (max-width: 900px) {
            .header-nav {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .header-cta {
                display: none;
            }

            .header-desktop-nav.open {
                display: flex;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                background: rgba(10, 19, 36, .98);
                backdrop-filter: blur(14px);
                -webkit-backdrop-filter: blur(14px);
                padding: 20px 24px 28px;
                border-bottom: 1px solid rgba(0, 201, 232, .25);
                box-shadow: 0 18px 40px rgba(0, 0, 0, .4);
            }

            .header-desktop-nav.open .nav-link {
                padding: 12px 16px;
                border-radius: 10px;
            }

            .header-desktop-nav.open .nav-link.active {
                background: rgba(0, 201, 232, .08);
            }

            .header-desktop-nav.open .nav-link.active::after {
                left: 18px;
                right: auto;
                width: 3px;
                height: 20px;
                bottom: auto;
                top: 50%;
                transform: translateY(-50%);
                border-radius: 3px;
                box-shadow: 0 0 12px rgba(0, 201, 232, .6);
                background: var(--accent);
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 60px;
            }

            .article-banner {
                padding: 48px 0 40px;
            }

            .article-title {
                font-size: 30px;
            }

            .article-section {
                padding: 32px 0 56px;
            }

            .article-content {
                padding: 32px 24px;
                border-radius: 12px;
            }

            .article-content h2 {
                font-size: 22px;
            }

            .article-content p {
                font-size: 15px;
            }

            .related-section {
                padding: 56px 0 64px;
            }

            .section-title {
                font-size: 26px;
            }

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

            .related-card:last-child {
                grid-column: auto;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .breadcrumb-current {
                max-width: 180px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .header-inner {
                padding: 0 16px;
            }

            .header-logo-text {
                font-size: 18px;
            }

            .article-title {
                font-size: 26px;
            }

            .article-meta {
                gap: 10px;
                font-size: 13px;
            }

            .meta-badge {
                font-size: 12px;
            }

            .article-content {
                padding: 28px 18px;
            }

            .related-body {
                padding: 18px 18px 20px;
            }

            .footer-grid {
                gap: 28px;
            }
        }

/* roulang page: category3 */
/* ========== 设计变量 ========== */
:root{
  --primary:#1758B2;
  --primary-dark:#0E3E82;
  --accent:#00C9E8;
  --accent-soft:rgba(0,201,232,.12);
  --gold:#FF9F1C;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --border:#E3EAF3;
  --text:#12233B;
  --text-muted:#5A6B85;
  --dark:#0A1324;
  --dark-text:#A9B8D0;
  --radius-sm:8px;
  --radius-md:12px;
  --radius-full:999px;
  --shadow-sm:0 8px 24px rgba(18,35,59,.06);
  --shadow-lg:0 14px 36px rgba(18,35,59,.12);
  --container:1200px;
  --header-h:64px;
  --section-space:96px;
  --section-space-md:72px;
  --section-space-sm:64px;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,sans-serif;
  --font-mono:ui-monospace,"SF Mono","JetBrains Mono",Consolas,"Liberation Mono",monospace;
}
/* ========== Reset & Base ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;}
button{font-family:inherit;border:none;background:none;cursor:pointer;}
ul,ol{list-style:none;}
h1,h2,h3,h4{line-height:1.25;font-weight:800;color:var(--text);}
p{color:var(--text);}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
::selection{background:var(--accent-soft);color:var(--primary-dark);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

/* ========== Header / Nav ========== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:var(--dark);
  height:var(--header-h);
  border-bottom:2px solid transparent;
  border-image:linear-gradient(90deg,var(--accent),rgba(0,201,232,.15)) 1;
  box-shadow:0 4px 20px rgba(10,19,36,.35);
}
.header-inner{
  max-width:var(--container);height:100%;margin:0 auto;padding:0 24px;
  display:flex;align-items:center;gap:28px;
}
.header-logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.header-logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),#00a1c9);
  color:#0A1324;font-weight:800;font-size:15px;letter-spacing:-.5px;
  box-shadow:0 0 14px rgba(0,201,232,.45);
}
.header-logo-text{font-size:18px;font-weight:800;color:#fff;letter-spacing:.5px;line-height:1;}
.header-logo-text span{color:var(--accent);font-weight:600;font-size:15px;margin-left:1px;}
.header-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;display:block;padding:8px 16px;
  color:var(--dark-text);font-size:14px;font-weight:500;
  border-radius:6px;white-space:nowrap;transition:color .2s,background .2s,box-shadow .2s;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-link.active{
  color:#fff;font-weight:600;
  background:rgba(0,201,232,.1);
  box-shadow:inset 0 0 0 1px rgba(0,201,232,.25),0 2px 10px rgba(0,201,232,.15);
}
.nav-link.active::after{
  content:'';position:absolute;left:16px;right:16px;bottom:-2px;height:2px;
  background:var(--accent);border-radius:2px;box-shadow:0 0 12px var(--accent);
}
.header-cta{margin-left:6px;flex-shrink:0;}
.btn-neon{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--accent);color:var(--dark);
  font-size:14px;font-weight:700;letter-spacing:.3px;
  padding:9px 18px;border-radius:8px;
  box-shadow:0 0 12px rgba(0,201,232,.25);
  transition:background .2s,box-shadow .2s,transform .2s;
}
.btn-neon:hover{background:#5be2f5;box-shadow:0 0 22px rgba(0,201,232,.5);transform:translateY(-1px);}
.btn-neon:active{transform:scale(.97);}
.cta-text{font-size:14px;}
.hamburger{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;padding:8px;margin-left:auto;border-radius:8px;
  background:rgba(255,255,255,.06);
}
.hamburger span{display:block;height:2px;background:var(--accent);border-radius:2px;transition:transform .25s,opacity .25s;}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.open span:nth-child(2){opacity:0;}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
/* 移动端抽屉 */
@media(max-width:991px){
  .header-desktop-nav{
    position:fixed;top:var(--header-h);right:0;bottom:0;width:280px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:var(--dark);padding:24px 16px 40px;
    transform:translateX(100%);transition:transform .3s ease;
    box-shadow:-8px 0 30px rgba(0,0,0,.3);
    overflow-y:auto;margin:0;
  }
  .header-desktop-nav.open{transform:translateX(0);}
  .nav-link{padding:14px 16px;font-size:15px;border-radius:8px;}
  .nav-link.active::after{content:'';position:absolute;left:0;top:14px;bottom:14px;width:3px;height:auto;box-shadow:0 0 12px var(--accent);}
  .hamburger{display:flex;}
  .header-cta{display:none;}
}

/* ========== Page Hero ========== */
.page-hero{
  position:relative;
  margin-top:var(--header-h);
  padding:72px 0 64px;
  background:var(--card);
  border-bottom:1px solid var(--border);
  overflow:hidden;
}
.page-hero::before{
  content:'';position:absolute;inset:0;z-index:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.12;
}
.page-hero::after{
  content:'';position:absolute;right:-80px;top:-80px;width:320px;height:320px;
  background:radial-gradient(circle,var(--accent-soft),transparent 70%);
  z-index:0;pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;display:flex;align-items:center;gap:48px;}
.page-hero-content{flex:1.15;}
.page-hero-visual{flex:.85;display:block;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);
  background:var(--accent-soft);padding:5px 14px;border-radius:var(--radius-full);
  margin-bottom:18px;letter-spacing:.8px;border:1px solid rgba(0,201,232,.2);
}
.hero-eyebrow::before{content:'';width:6px;height:6px;background:var(--accent);border-radius:50%;box-shadow:0 0 8px var(--accent);}
.page-hero h1{font-size:48px;line-height:1.18;font-weight:800;margin-bottom:16px;color:var(--text);}
.page-hero h1 .highlight{color:var(--primary);position:relative;white-space:nowrap;}
.page-hero h1 .highlight::after{
  content:'';position:absolute;left:0;right:0;bottom:4px;height:8px;
  background:var(--accent-soft);z-index:-1;border-radius:4px;
}
.page-hero-sub{font-size:16px;color:var(--text-muted);line-height:1.8;max-width:560px;margin-bottom:24px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--bg);border:1px solid var(--border);
  color:var(--primary);font-size:13px;font-weight:600;
  padding:5px 14px;border-radius:var(--radius-full);
}
.hero-badge::before{content:'✓';color:var(--accent);font-weight:800;}
.page-hero-visual img{
  width:100%;border-radius:var(--radius-md);
  box-shadow:var(--shadow-lg);border:1px solid var(--border);
  object-fit:cover;aspect-ratio:16/10;
}

/* ========== Section Base ========== */
.section{padding:var(--section-space) 0;scroll-margin-top:80px;}
.section:nth-child(even){background:var(--card);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section:nth-child(odd){background:transparent;}
.section-head{margin-bottom:48px;}
.section-kicker{
  font-size:13px;font-weight:700;letter-spacing:1.2px;color:var(--accent);
  text-transform:uppercase;margin-bottom:8px;display:block;
}
.section-head h2{font-size:34px;font-weight:800;color:var(--text);line-height:1.25;}
.section-head .section-lead{font-size:15px;color:var(--text-muted);margin-top:8px;max-width:640px;line-height:1.7;}
.section-head.center{text-align:center;}
.section-head.center .section-lead{margin-left:auto;margin-right:auto;}

/* ========== Coverage / 要点 ========== */
.coverage-list{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.coverage-item{
  grid-column:span 6;
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:28px 28px 26px;
  transition:transform .25s,box-shadow .25s;
  position:relative;
  overflow:hidden;
}
.coverage-item:nth-child(2){grid-column:4/span 6;margin-top:24px;}
.coverage-item:nth-child(3){grid-column:1/span 5;margin-top:-8px;}
.coverage-item:nth-child(4){grid-column:7/span 6;margin-top:32px;}
.coverage-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.coverage-item::before{
  content:'';position:absolute;top:0;left:0;width:3px;height:100%;
  background:linear-gradient(180deg,var(--accent),transparent);
}
.coverage-icon{
  width:44px;height:44px;border-radius:10px;
  background:var(--accent-soft);display:flex;align-items:center;justify-content:center;
  font-size:20px;margin-bottom:14px;box-shadow:inset 0 0 0 1px rgba(0,201,232,.2);
}
.coverage-item h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.coverage-item p{font-size:14px;color:var(--text-muted);line-height:1.7;}
@media(max-width:991px){
  .coverage-item,.coverage-item:nth-child(2),.coverage-item:nth-child(3),.coverage-item:nth-child(4){grid-column:span 12;margin-top:0;}
}

/* ========== 图文交错误 ========== */
.split-block{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split-reverse .split-media{order:2;}
.split-content h2{font-size:28px;font-weight:800;margin-bottom:14px;line-height:1.3;}
.split-content .split-lead{font-size:15px;color:var(--text-muted);line-height:1.8;margin-bottom:20px;}
.split-list{display:flex;flex-direction:column;gap:10px;}
.split-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:var(--text);line-height:1.7;
}
.split-list li::before{
  content:'';flex-shrink:0;width:6px;height:6px;border-radius:50%;
  background:var(--accent);margin-top:10px;box-shadow:0 0 8px rgba(0,201,232,.6);
}
.split-media img{width:100%;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);border:1px solid var(--border);object-fit:cover;aspect-ratio:4/3;}
.split-media{position:relative;}
.split-media::before{
  content:'';position:absolute;inset:16px -16px -16px 16px;
  background:var(--accent-soft);border-radius:var(--radius-md);z-index:-1;
}
@media(max-width:991px){
  .split-block{grid-template-columns:1fr;gap:32px;}
  .split-reverse .split-media{order:0;}
}

/* ========== 场景卡（错落） ========== */
.scene-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.scene-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:26px;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.scene-card.wide{grid-column:span 7;}
.scene-card.narrow{grid-column:span 5;}
.scene-card.offset{grid-column:5/span 8;margin-top:-12px;}
.scene-card .scene-tag{
  display:inline-block;align-self:flex-start;
  font-size:12px;font-weight:700;color:var(--primary);
  background:var(--accent-soft);padding:3px 12px;border-radius:var(--radius-full);
  margin-bottom:12px;
}
.scene-card h3{font-size:19px;font-weight:700;margin-bottom:8px;}
.scene-card p{font-size:14px;color:var(--text-muted);line-height:1.7;margin-bottom:14px;}
.scene-card .scene-link{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:4px;}
.scene-card .scene-link:hover{color:var(--primary-dark);gap:8px;}
.scene-card .scene-link::after{content:'→';transition:transform .2s;}
.scene-card .scene-link:hover::after{transform:translateX(2px);}
.scene-thumb{width:100%;height:140px;border-radius:var(--radius-sm);object-fit:cover;margin-bottom:14px;border:1px solid var(--border);}
@media(max-width:991px){
  .scene-card.wide,.scene-card.narrow,.scene-card.offset{grid-column:span 12;margin-top:0;}
}

/* ========== 流程时间线 ========== */
.steps-wrap{max-width:760px;margin:0 auto;position:relative;padding-left:36px;}
.steps-wrap::before{
  content:'';position:absolute;left:14px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,var(--accent),var(--primary),transparent);
  border-radius:2px;
}
.step-item{position:relative;padding:0 0 30px 8px;}
.step-item:last-child{padding-bottom:0;}
.step-num{
  position:absolute;left:-36px;top:0;width:28px;height:28px;
  background:var(--dark);color:var(--accent);
  border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  box-shadow:0 0 0 3px var(--accent-soft),0 0 12px rgba(0,201,232,.3);
}
.step-item h3{font-size:17px;font-weight:700;margin-bottom:4px;}
.step-item p{font-size:14px;color:var(--text-muted);line-height:1.7;}

/* ========== FAQ ========== */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-md);margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-sm);transition:box-shadow .25s;}
.faq-item.active{box-shadow:var(--shadow-lg);border-color:rgba(0,201,232,.4);}
.faq-question{
  width:100%;display:flex;align-items:center;gap:12px;
  padding:18px 20px;text-align:left;background:transparent;
  font-size:16px;font-weight:600;color:var(--text);
  transition:background .2s;
}
.faq-question:hover{background:var(--bg);}
.faq-q-mark{
  flex-shrink:0;width:24px;height:24px;border-radius:6px;
  background:var(--accent-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;
}
.faq-arrow{margin-left:auto;font-size:18px;color:var(--text-muted);transition:transform .3s;flex-shrink:0;}
.faq-item.active .faq-arrow{transform:rotate(180deg);color:var(--accent);}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s;}
.faq-item.active .faq-answer{max-height:500px;padding:0 20px 20px 56px;}
.faq-answer p{font-size:14px;color:var(--text-muted);line-height:1.75;}

/* ========== CTA ========== */
.cta-section{
  background:var(--dark);
  position:relative;overflow:hidden;
  padding:72px 0;
  border-top:2px solid transparent;
  border-image:linear-gradient(90deg,var(--accent),transparent) 1;
}
.cta-section::before{
  content:'';position:absolute;right:-40px;top:-40px;width:280px;height:280px;
  background:radial-gradient(circle,rgba(0,201,232,.2),transparent 70%);
}
.cta-section::after{
  content:'';position:absolute;left:-60px;bottom:-80px;width:240px;height:240px;
  background:radial-gradient(circle,rgba(23,88,178,.25),transparent 70%);
}
.cta-inner{position:relative;z-index:1;text-align:center;max-width:680px;margin:0 auto;}
.cta-inner h2{color:#fff;font-size:32px;font-weight:800;margin-bottom:14px;}
.cta-inner p{color:var(--dark-text);font-size:15px;line-height:1.8;margin-bottom:30px;}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}
.btn-primary{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--primary);color:#fff;
  padding:14px 32px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;letter-spacing:.3px;
  transition:background .2s,transform .2s,box-shadow .2s;
}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 8px 24px rgba(23,88,178,.35);transform:translateY(-2px);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;
  background:transparent;color:var(--accent);
  border:1px solid rgba(0,201,232,.5);
  padding:13px 28px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;
  transition:background .2s,border-color .2s,transform .2s;
}
.btn-ghost:hover{background:rgba(0,201,232,.1);border-color:var(--accent);transform:translateY(-2px);}

/* ========== Footer ========== */
.footer{background:var(--dark);border-top:2px solid var(--accent);color:var(--dark-text);}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;
  padding:64px 0 44px;
}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-logo .header-logo-mark{width:32px;height:32px;font-size:13px;border-radius:8px;}
.footer-brand-text{font-size:18px;font-weight:800;color:#fff;}
.footer-brand-text span{color:var(--accent);}
.footer-brand p{font-size:14px;line-height:1.7;color:var(--dark-text);max-width:320px;}
.footer-title{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.5px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:var(--dark-text);transition:color .2s,padding-left .2s;}
.footer-links a:hover{color:var(--accent);padding-left:4px;}
.footer-contact p{font-size:13px;line-height:1.7;color:var(--dark-text);margin-bottom:8px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding:22px 0;text-align:center;
  font-size:13px;color:var(--dark-text);
}
.footer-bottom p{color:var(--dark-text);font-size:13px;}

/* ========== 响应式 ========== */
@media(max-width:1199px){
  .page-hero{padding:56px 0 48px;}
  .page-hero h1{font-size:40px;}
  .section{padding:var(--section-space-md) 0;}
  .split-block{gap:36px;}
}
@media(max-width:991px){
  .page-hero .container{flex-direction:column;}
  .page-hero-visual{display:none;}
  .page-hero h1{font-size:36px;}
  .section-head h2{font-size:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .faq-question{font-size:15px;padding:16px;}
  .faq-item.active .faq-answer{padding-left:16px;}
}
@media(max-width:768px){
  :root{--section-space:var(--section-space-sm);}
  .container{padding:0 16px;}
  .header-inner{padding:0 16px;gap:12px;}
  .page-hero{margin-top:var(--header-h);padding:44px 0 36px;}
  .page-hero h1{font-size:30px;}
  .page-hero-sub{font-size:15px;}
  .section-head h2{font-size:24px;}
  .split-block{grid-template-columns:1fr;gap:24px;}
  .coverage-list{grid-template-columns:1fr;}
  .steps-wrap{padding-left:28px;}
  .step-num{left:-28px;width:24px;height:24px;font-size:12px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 28px;}
  .cta-inner h2{font-size:24px;}
  .cta-buttons{flex-direction:column;align-items:center;}
  .btn-primary,.btn-ghost{width:100%;justify-content:center;}
  .scene-thumb{height:110px;}
}
@media(max-width:520px){
  body{font-size:15px;}
  .header-logo-text{font-size:16px;}
  .header-logo-text span{font-size:14px;}
  .page-hero h1{font-size:26px;}
  .page-hero-sub{font-size:14px;}
  .hero-badge{font-size:12px;padding:4px 10px;}
  .section-head h2{font-size:22px;}
  .coverage-item{padding:20px;}
  .faq-question{font-size:14px;padding:14px;}
  .footer-brand p{font-size:13px;}
}

/* roulang page: category2 */
/* ============ Design Tokens ============ */
:root {
  --primary: #1758B2;
  --primary-dark: #0E3E82;
  --accent: #00C9E8;
  --amber: #FF9F1C;
  --bg: #F4F7FB;
  --card: #FFFFFF;
  --border: #E3EAF3;
  --text: #12233B;
  --text-secondary: #5A6B85;
  --dark: #0A1324;
  --dark-text: #A9B8D0;
  --radius: 16px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow: 0 8px 24px rgba(18, 35, 59, 0.06);
  --shadow-hover: 0 14px 36px rgba(18, 35, 59, 0.12);
  --container: 1200px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
  --font-number: "SF Mono", "JetBrains Mono", "Consolas", monospace;
  --transition: all 0.3s ease;
  --header-height: 64px;
}

/* ============ Reset / Base ============ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul,
ol {
  list-style: none;
}

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

input,
textarea {
  font-family: inherit;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  position: relative;
}

/* ============ Header / Nav ============ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--dark);
  height: var(--header-height);
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--accent), transparent 60%) 1;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-weight: 800;
  color: #fff;
}

.header-logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: var(--dark);
  border-radius: 8px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.5px;
  box-shadow: 0 0 16px rgba(0, 201, 232, 0.5);
}

.header-logo-text {
  font-size: 19px;
  letter-spacing: 1px;
}

.header-logo-text span {
  color: var(--accent);
  font-weight: 700;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  position: relative;
  padding: 8px 14px;
  color: var(--dark-text);
  font-size: 14px;
  font-weight: 500;
  border-radius: 6px;
  white-space: nowrap;
  transition: var(--transition);
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
  color: #fff;
  background: rgba(0, 201, 232, 0.1);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  border-radius: 2px;
}

.header-cta {
  margin-left: auto;
  flex-shrink: 0;
}

.btn-neon {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--dark);
  font-size: 14px;
  font-weight: 700;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  transition: var(--transition);
  box-shadow: 0 0 0 rgba(0, 201, 232, 0);
}

.btn-neon:hover {
  background: #33d6f0;
  box-shadow: 0 0 20px rgba(0, 201, 232, 0.45);
  transform: translateY(-1px);
}

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

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  justify-content: center;
  align-items: center;
  border-radius: 8px;
  background: transparent;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

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

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

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

/* Mobile drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--dark);
  padding: 16px 24px 28px;
  z-index: 999;
  box-shadow: 0 20px 30px rgba(0, 0, 0, 0.3);
  border-bottom: 2px solid var(--accent);
}

.mobile-drawer.open {
  display: block;
}

.mobile-drawer a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 8px;
  color: var(--dark-text);
  font-size: 15px;
  font-weight: 500;
  border-radius: 8px;
  transition: var(--transition);
}

.mobile-drawer a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.mobile-drawer a.active {
  color: #fff;
  background: rgba(0, 201, 232, 0.1);
  box-shadow: inset 3px 0 0 var(--accent);
}

.mobile-drawer .drawer-cta {
  margin-top: 12px;
  justify-content: center;
  background: var(--accent);
  color: var(--dark);
  font-weight: 700;
}

.mobile-drawer .drawer-cta:hover {
  background: #33d6f0;
}

/* ============ Hero ============ */
.page-hero {
  background: linear-gradient(180deg, #EAF1FA 0%, var(--bg) 100%);
  padding: calc(var(--header-height) + 76px) 0 84px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.45;
  z-index: 0;
}

.page-hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--bg), transparent);
  z-index: 1;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 48px;
  align-items: center;
}

.hero-content {
  grid-column: 1 / span 6;
}

.hero-media {
  grid-column: 8 / span 5;
}

.hero-media img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  width: 100%;
  object-fit: cover;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(23, 88, 178, 0.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-badge);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero-title {
  font-size: 46px;
  line-height: 1.2;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

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

.hero-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 520px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  transition: var(--transition);
  box-shadow: 0 4px 14px rgba(23, 88, 178, 0.25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(23, 88, 178, 0.35);
  transform: translateY(-1px);
}

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

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #fff;
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(23, 88, 178, 0.08);
}

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

.hero-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-tags span {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 16px;
  border-radius: var(--radius-badge);
  backdrop-filter: blur(4px);
}

/* ============ Stats Bar ============ */
.stats-section {
  padding: 48px 0;
}

.stats-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
}

.stat-item {
  padding: 36px 28px;
  text-align: center;
  border-right: 1px solid var(--border);
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  font-family: var(--font-number);
  font-size: 44px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 8px;
  font-feature-settings: "tnum";
}

.stat-number em {
  font-style: normal;
  color: var(--accent);
  font-size: 28px;
  margin-right: 2px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ============ Section Common ============ */
.section-padding {
  padding: 96px 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: 56px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}

.section-head p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ============ Feature (图文交错) ============ */
.feature-section {
  padding: 96px 0;
  background: var(--card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.feature-row {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 56px;
  align-items: center;
  margin-bottom: 72px;
}

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

.feature-row.reverse .feature-media {
  grid-column: 7 / span 6;
  grid-row: 1;
}

.feature-row.reverse .feature-text {
  grid-column: 1 / span 5;
  grid-row: 1;
}

.feature-media {
  grid-column: 1 / span 6;
}

.feature-media img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  width: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.feature-media img:hover {
  transform: scale(1.01);
}

.feature-text {
  grid-column: 8 / span 5;
}

.feature-text h3 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.3;
}

.feature-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.6;
}

.feature-list li::before {
  content: "◆";
  color: var(--accent);
  font-size: 10px;
  margin-top: 6px;
  flex-shrink: 0;
}

/* ============ Scenario ============ */
.scenario-section {
  padding: 96px 0;
  background: var(--bg);
}

.scenario-head {
  max-width: 720px;
  margin-bottom: 56px;
}

.scenario-head h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
}

.scenario-head p {
  font-size: 16px;
  color: var(--text-secondary);
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.scenario-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.scenario-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.scenario-card.large {
  grid-column: span 7;
}

.scenario-card.small {
  grid-column: span 5;
}

.scenario-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.scenario-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ============ Workflow ============ */
.workflow-section {
  padding: 96px 0;
  background: var(--dark);
  position: relative;
  overflow: hidden;
}

.workflow-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent 70%);
}

.workflow-section .section-head h2 {
  color: #fff;
}

.workflow-section .section-head p {
  color: var(--dark-text);
}

.workflow-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 720px;
}

.workflow-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(169, 184, 208, 0.15);
  transition: var(--transition);
}

.workflow-item:first-child {
  border-top: 1px solid rgba(169, 184, 208, 0.15);
}

.workflow-item:hover {
  padding-left: 12px;
}

.workflow-num {
  font-family: var(--font-number);
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  font-feature-settings: "tnum";
}

.workflow-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.workflow-content p {
  font-size: 14px;
  color: var(--dark-text);
  line-height: 1.8;
}

/* ============ Knowledge Cards ============ */
.knowledge-section {
  padding: 96px 0;
  background: var(--bg);
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.knowledge-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.knowledge-card.wide {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.knowledge-card.wide .knowledge-media img {
  border-radius: 10px;
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.knowledge-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.knowledge-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent), var(--primary));
  opacity: 0.7;
}

.knowledge-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.3;
}

.knowledge-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.knowledge-tag {
  display: inline-block;
  background: rgba(23, 88, 178, 0.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 12px;
  border-radius: var(--radius-badge);
  margin-bottom: 12px;
}

/* ============ FAQ ============ */
.faq-section {
  padding: 96px 0;
  background: var(--card);
}

.faq-section .faq-head {
  max-width: 720px;
  margin-bottom: 48px;
}

.faq-section .faq-head h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
}

.faq-section .faq-head p {
  font-size: 16px;
  color: var(--text-secondary);
}

.faq-list {
  max-width: 760px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 16px;
  background: var(--bg);
  transition: var(--transition);
  overflow: hidden;
}

.faq-item.open {
  box-shadow: var(--shadow);
  border-color: rgba(23, 88, 178, 0.3);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  background: transparent;
  transition: var(--transition);
}

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

.faq-question .q-marker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--primary);
  color: #fff;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.faq-arrow {
  margin-left: auto;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
  color: var(--text-secondary);
  font-size: 14px;
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  max-height: 400px;
  padding: 0 24px 24px 62px;
}

/* ============ CTA ============ */
.cta-section {
  padding: 96px 0;
  background: var(--dark);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent 60%);
}

.cta-inner {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 20px;
}

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

.cta-inner p {
  font-size: 16px;
  color: var(--dark-text);
  line-height: 1.8;
  margin-bottom: 36px;
}

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

.btn-outline-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  transition: var(--transition);
}

.btn-outline-light:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 20px rgba(0, 201, 232, 0.15);
}

/* ============ Footer ============ */
.footer {
  background: var(--dark);
  color: var(--dark-text);
  padding: 64px 0 0;
  position: relative;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent 60%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: 48px;
  padding-bottom: 48px;
}

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

.footer-brand-text {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
}

.footer-brand-text span {
  color: var(--accent);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--dark-text);
  max-width: 260px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--dark-text);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-contact p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--dark-text);
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(169, 184, 208, 0.12);
  padding: 20px 0 28px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(169, 184, 208, 0.7);
}

/* ============ Responsive ============ */
@media (max-width: 1200px) {
  .container {
    padding: 0 32px;
  }
}

@media (max-width: 1024px) {
  .header-desktop-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .header-cta {
    margin-left: auto;
  }

  .hero-title {
    font-size: 38px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-content {
    grid-column: 1;
  }

  .hero-media {
    grid-column: 1;
    max-width: 640px;
  }

  .feature-row,
  .feature-row.reverse {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .feature-row.reverse .feature-media {
    grid-column: 1;
    grid-row: auto;
  }

  .feature-row.reverse .feature-text {
    grid-column: 1;
    grid-row: auto;
  }

  .feature-text,
  .feature-media {
    grid-column: 1 !important;
  }

  .scenario-card.large,
  .scenario-card.small {
    grid-column: span 12;
  }

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

  .stat-item:nth-child(2) {
    border-right: none;
  }

  .stat-item:nth-child(1),
  .stat-item:nth-child(2) {
    border-bottom: 1px solid var(--border);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .knowledge-card.wide {
    grid-column: span 2;
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }

  .header-inner {
    padding: 0 16px;
    gap: 12px;
  }

  .header-cta .cta-text {
    display: none;
  }

  .header-cta .btn-neon {
    padding: 10px 14px;
  }

  .page-hero {
    padding-top: calc(var(--header-height) + 48px);
    padding-bottom: 56px;
  }

  .hero-title {
    font-size: 30px;
  }

  .hero-subtitle {
    font-size: 15px;
  }

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

  .hero-actions .btn-primary,
  .hero-actions .btn-outline {
    width: 100%;
  }

  .section-padding,
  .feature-section,
  .scenario-section,
  .workflow-section,
  .knowledge-section,
  .faq-section,
  .cta-section {
    padding: 64px 0;
  }

  .section-head h2,
  .scenario-head h2,
  .faq-section .faq-head h2 {
    font-size: 26px;
  }

  .stats-card {
    grid-template-columns: 1fr 1fr;
  }

  .stat-number {
    font-size: 36px;
  }

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

  .scenario-card.large,
  .scenario-card.small {
    grid-column: span 1;
    min-height: 0;
    padding: 28px 24px;
  }

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

  .knowledge-card.wide {
    grid-column: span 1;
  }

  .workflow-item {
    grid-template-columns: 48px 1fr;
    gap: 16px;
    padding: 24px 0;
  }

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

  .faq-question {
    padding: 18px 16px;
    font-size: 15px;
    flex-wrap: wrap;
  }

  .faq-answer {
    padding: 0 16px;
  }

  .faq-item.open .faq-answer {
    padding: 0 16px 18px 54px;
  }

  .cta-inner h2 {
    font-size: 28px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-buttons .btn-neon,
  .cta-buttons .btn-outline-light {
    width: 100%;
    justify-content: center;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-brand p {
    max-width: 100%;
  }

  .header-nav {
    display: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-title {
    font-size: 26px;
  }

  .hero-tags {
    gap: 8px;
  }

  .hero-tags span {
    font-size: 12px;
    padding: 3px 12px;
  }

  .stats-card {
    grid-template-columns: 1fr;
  }

  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 24px 16px;
  }

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

/* roulang page: category4 */
:root {
            --brand: #1758B2;
            --brand-dark: #0E3E82;
            --accent: #00C9E8;
            --gold: #FF9F1C;
            --bg: #F4F7FB;
            --card: #FFFFFF;
            --border: #E3EAF3;
            --text: #12233B;
            --text-weak: #5A6B85;
            --dark: #0A1324;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-pill: 999px;
            --shadow: 0 8px 24px rgba(18, 35, 59, 0.06);
            --shadow-hover: 0 14px 36px rgba(18, 35, 59, 0.12);
            --font-num: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ---------- Header ---------- */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--dark);
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.3);
        }

        .header::after {
            content: '';
            display: block;
            height: 2px;
            background: linear-gradient(90deg, var(--accent) 0%, rgba(0, 201, 232, 0.3) 55%, transparent 100%);
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 64px;
            display: flex;
            align-items: center;
            gap: 32px;
        }

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

        .header-logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--accent);
            color: var(--dark);
            border-radius: 8px;
            font-weight: 800;
            font-size: 14px;
            line-height: 1;
            box-shadow: 0 0 16px rgba(0, 201, 232, 0.25);
        }

        .header-logo-text {
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .header-logo-text span {
            color: var(--accent);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
        }

        .nav-link {
            color: #A9B8D0;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            position: relative;
            transition: color 0.3s, background 0.3s;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: #fff;
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
            box-shadow: 0 0 12px var(--accent), 0 0 4px var(--accent);
        }

        .header-cta {
            margin-left: 8px;
            flex-shrink: 0;
        }

        .btn-neon {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent);
            color: var(--dark);
            font-weight: 700;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: 8px;
            box-shadow: 0 0 0 0 rgba(0, 201, 232, 0);
            transition: box-shadow 0.3s, transform 0.2s, background 0.3s;
            white-space: nowrap;
        }

        .btn-neon:hover {
            box-shadow: 0 0 24px rgba(0, 201, 232, 0.6);
            transform: translateY(-1px);
        }

        .btn-neon:active {
            transform: scale(0.98);
        }

        .hamburger {
            display: none;
            background: none;
            border: 0;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            padding: 0;
            border-radius: 8px;
            transition: background 0.3s;
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .hamburger span {
            width: 20px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: transform 0.3s, opacity 0.3s;
        }

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

        .header.nav-open .hamburger span:nth-child(2) {
            opacity: 0;
        }

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

        /* ---------- Hero (Page head) ---------- */
        .category-hero {
            position: relative;
            padding: calc(64px + 76px) 0 64px;
            background: var(--bg);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: right center;
            opacity: 0.12;
            z-index: 0;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(0, 201, 232, 0.12) 0%, transparent 70%);
            z-index: 0;
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand);
            background: rgba(23, 88, 178, 0.08);
            border: 1px solid rgba(23, 88, 178, 0.14);
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .page-title {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text);
            margin-bottom: 18px;
        }

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

        .hero-sub {
            max-width: 640px;
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-weak);
            margin-bottom: 28px;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand);
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid var(--border);
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            box-shadow: 0 2px 10px rgba(18, 35, 59, 0.04);
            transition: border-color 0.3s, color 0.3s, box-shadow 0.3s;
        }

        .hero-badge:hover {
            border-color: var(--accent);
            color: var(--brand-dark);
            box-shadow: 0 4px 16px rgba(0, 201, 232, 0.15);
        }

        .hero-badge::before {
            content: '●';
            font-size: 6px;
            color: var(--accent);
            margin-right: 6px;
        }

        /* ---------- Section common ---------- */
        .section-tag {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand);
            background: rgba(23, 88, 178, 0.07);
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .section-tag::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            margin-right: 8px;
        }

        h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 14px;
        }

        .section-desc {
            max-width: 720px;
            font-size: 16px;
            color: var(--text-weak);
            margin-bottom: 40px;
            line-height: 1.8;
        }

        /* ---------- Intro section ---------- */
        .intro-section {
            padding: 96px 0;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

        .intro-copy p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-weak);
            margin-bottom: 24px;
            max-width: 560px;
        }

        .check-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 560px;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text);
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 12px 18px;
            box-shadow: var(--shadow);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .check-list li:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow-hover);
        }

        .check-list li::before {
            content: '✓';
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 201, 232, 0.15);
            color: var(--brand);
            border-radius: 50%;
            font-size: 12px;
            font-weight: 700;
            margin-top: 3px;
        }

        .intro-visual {
            position: relative;
        }

        .intro-visual::before {
            content: '';
            position: absolute;
            top: -20px;
            right: -20px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 201, 232, 0.14) 0%, transparent 70%);
            z-index: 0;
        }

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

        /* ---------- Scenario section ---------- */
        .scenario-section {
            padding: 96px 0;
            background: var(--card);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .scenario-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px 64px;
            max-width: 960px;
        }

        .scenario-item {
            display: flex;
            gap: 24px;
            padding: 28px 28px 28px 24px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
        }

        .scenario-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 201, 232, 0.5);
        }

        .scenario-num {
            font-family: var(--font-num);
            font-size: 40px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            min-width: 48px;
            text-shadow: 0 4px 16px rgba(0, 201, 232, 0.2);
        }

        .scenario-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .scenario-item p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ---------- Steps ---------- */
        .steps-section {
            padding: 96px 0;
        }

        .steps-row {
            display: flex;
            gap: 28px;
            margin-top: 40px;
        }

        .step-card {
            flex: 1;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 28px 32px;
            position: relative;
            box-shadow: var(--shadow);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .step-card:not(:last-child)::after {
            content: '→';
            position: absolute;
            right: -22px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--accent);
            font-size: 22px;
            font-weight: 700;
            z-index: 2;
            text-shadow: 0 0 12px rgba(0, 201, 232, 0.4);
        }

        .step-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            font-family: var(--font-num);
            margin-bottom: 20px;
            box-shadow: 0 6px 18px rgba(23, 88, 178, 0.25);
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ---------- FAQ section ---------- */
        .faq-section {
            padding: 96px 0;
            background: var(--card);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .faq-list {
            max-width: 840px;
            margin-top: 36px;
        }

        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .faq-item:hover {
            border-color: rgba(23, 88, 178, 0.25);
        }

        .faq-item.active {
            border-color: rgba(0, 201, 232, 0.55);
            box-shadow: 0 8px 28px rgba(18, 35, 59, 0.08);
        }

        .faq-q {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            user-select: none;
            transition: color 0.3s;
        }

        .faq-q:hover {
            color: var(--brand);
        }

        .faq-q-mark {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 201, 232, 0.15);
            color: var(--brand);
            border-radius: 8px;
            font-size: 13px;
            font-weight: 800;
            font-family: var(--font-num);
        }

        .faq-arrow {
            margin-left: auto;
            font-size: 16px;
            color: var(--text-weak);
            transition: transform 0.3s, color 0.3s;
        }

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

        .faq-a {
            max-height: 0;
            overflow: hidden;
            padding: 0 24px;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item.active .faq-a {
            max-height: 600px;
            padding: 0 24px 22px 66px;
        }

        .faq-a p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        /* ---------- Knowledge cards ---------- */
        .knowledge-section {
            padding: 96px 0;
        }

        .knowledge-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 32px;
        }

        .knowledge-card {
            display: flex;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
        }

        .knowledge-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 201, 232, 0.5);
        }

        .knowledge-card:nth-child(2) {
            margin-top: 48px;
        }

        .knowledge-card:nth-child(3) {
            grid-column: span 2;
        }

        .knowledge-card-img {
            width: 180px;
            flex-shrink: 0;
            object-fit: cover;
        }

        .knowledge-card-wide .knowledge-card-img {
            width: 260px;
        }

        .knowledge-card-body {
            padding: 28px 28px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .knowledge-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .knowledge-card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 14px;
            flex-grow: 1;
        }

        .knowledge-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand);
            transition: color 0.3s, gap 0.3s;
        }

        .knowledge-card:hover .knowledge-link {
            color: var(--accent);
            gap: 10px;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            padding: 96px 0 100px;
        }

        .cta-box {
            background: linear-gradient(135deg, #0E3E82 0%, #0A1324 60%, #0E3E82 100%);
            border-radius: 16px;
            padding: 64px 72px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
        }

        .cta-box::after {
            content: '';
            position: absolute;
            right: -80px;
            bottom: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 201, 232, 0.18) 0%, transparent 70%);
        }

        .cta-box h2 {
            color: #fff;
            font-size: 30px;
            position: relative;
            z-index: 1;
            margin-bottom: 14px;
        }

        .cta-box p {
            color: #A9B8D0;
            font-size: 15px;
            line-height: 1.8;
            max-width: 560px;
            margin: 0 auto 32px;
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 15px;
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.35);
            padding: 14px 28px;
            border-radius: 8px;
            transition: border-color 0.3s, background 0.3s, color 0.3s;
        }

        .btn-outline-light:hover {
            border-color: var(--accent);
            background: rgba(0, 201, 232, 0.12);
            color: var(--accent);
        }

        .btn-outline-light:active {
            transform: scale(0.98);
        }

        /* ---------- Footer ---------- */
        .footer {
            background: var(--dark);
            color: #A9B8D0;
        }

        .footer::before {
            content: '';
            display: block;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

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

        .footer-brand-text {
            color: #fff;
            font-size: 18px;
            font-weight: 800;
        }

        .footer-brand-text span {
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: #A9B8D0;
            max-width: 320px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links li + li {
            margin-top: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: #A9B8D0;
            transition: color 0.3s, padding-left 0.3s;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 6px;
        }

        .footer-contact p {
            font-size: 14px;
            line-height: 1.8;
            color: #A9B8D0;
            margin-bottom: 8px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 28px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: #76859C;
            line-height: 1.8;
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1199px) {
            .header-inner {
                gap: 16px;
            }

            .nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }

            .btn-neon {
                padding: 9px 16px;
                font-size: 13px;
            }

            .intro-grid {
                gap: 40px;
            }
        }

        @media (max-width: 991px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 48px;
            }

            .intro-visual {
                max-width: 640px;
            }

            .steps-row {
                flex-wrap: wrap;
            }

            .step-card {
                flex: 1 1 260px;
            }

            .step-card:not(:last-child)::after {
                display: none;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }

            .header-inner {
                padding: 0 16px;
                gap: 12px;
                height: 60px;
            }

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

            .header-cta {
                display: none;
            }

            .hamburger {
                display: flex;
                margin-left: auto;
            }

            .header-desktop-nav {
                position: fixed;
                top: 62px;
                left: 0;
                right: 0;
                background: var(--dark);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 16px 20px;
                gap: 4px;
                display: none;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
                border-bottom: 1px solid rgba(0, 201, 232, 0.25);
            }

            .header.nav-open .header-desktop-nav {
                display: flex;
            }

            .nav-link {
                padding: 12px 16px;
                font-size: 15px;
                border-radius: 8px;
            }

            .nav-link.active {
                background: rgba(0, 201, 232, 0.08);
            }

            .nav-link.active::after {
                left: 0;
                top: 50%;
                transform: translateY(-50%);
                width: 3px;
                height: 18px;
                border-radius: 3px;
                box-shadow: 0 0 10px var(--accent);
            }

            .category-hero {
                padding: calc(60px + 56px) 0 48px;
            }

            .page-title {
                font-size: 34px;
            }

            .hero-sub {
                font-size: 15px;
            }

            h2 {
                font-size: 26px;
            }

            .intro-section,
            .scenario-section,
            .steps-section,
            .faq-section,
            .knowledge-section,
            .cta-section {
                padding: 64px 0;
            }

            .scenario-list {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .scenario-item {
                padding: 24px 20px 24px 16px;
            }

            .scenario-num {
                font-size: 32px;
                min-width: 40px;
            }

            .steps-row {
                gap: 20px;
                margin-top: 28px;
            }

            .step-card {
                flex: 1 1 100%;
                padding: 28px 22px;
            }

            .knowledge-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .knowledge-card {
                flex-direction: column;
            }

            .knowledge-card:nth-child(2) {
                margin-top: 0;
            }

            .knowledge-card:nth-child(3) {
                grid-column: span 1;
            }

            .knowledge-card-img,
            .knowledge-card-wide .knowledge-card-img {
                width: 100%;
                height: 180px;
            }

            .cta-box {
                padding: 44px 24px;
                border-radius: 12px;
            }

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

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }

            .cta-buttons a {
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer .container {
                padding-top: 40px;
                padding-bottom: 28px;
            }

            .footer-bottom {
                padding-top: 20px;
            }
        }

        @media (max-width: 520px) {
            .hero-badge {
                font-size: 12px;
                padding: 5px 12px;
            }

            .page-title {
                font-size: 29px;
            }

            .faq-q {
                padding: 16px 16px;
                font-size: 15px;
                gap: 10px;
            }

            .faq-a {
                padding: 0 16px;
            }

            .faq-item.active .faq-a {
                padding: 0 16px 18px 48px;
            }

            .faq-q-mark {
                width: 24px;
                height: 24px;
                font-size: 12px;
            }

            .check-list li {
                padding: 10px 14px;
                font-size: 14px;
            }
        }