/* roulang page: index */
:root {
            --bg-primary: #0A1526;
            --bg-deep: #060D18;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --border-glass: rgba(148, 210, 255, 0.22);
            --border-light: rgba(150, 190, 255, 0.12);
            --accent-blue: #1E90FF;
            --accent-blue-light: #12B5E8;
            --accent-cyan: #17E6C8;
            --accent-amber: #FFB84D;
            --text-primary: #EAF2FF;
            --text-secondary: #94A9C7;
            --text-disabled: #5A6F8C;
            --success: #00E0A0;
            --error: #FF5C7A;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 12px;
            --radius-tag: 999px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 48px rgba(0, 90, 180, 0.18);
            --glow-blue: 0 0 24px rgba(30, 144, 255, 0.4);
            --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --font-num: "DIN Alternate", "Bebas Neue", "Arial Narrow", sans-serif;
            --header-h: 128px;
            --container: 1200px;
            --space-section: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--bg-primary);
            background-image: linear-gradient(rgba(148, 210, 255, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(148, 210, 255, 0.04) 1px, transparent 1px);
            background-size: 60px 60px;
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease-out;
        }

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

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 14px;
            color: var(--text-primary);
        }

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

        .section-head {
            margin-bottom: 40px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.5px;
        }

        .section-head .section-desc {
            color: var(--text-secondary);
            font-size: 15px;
            margin-top: 10px;
            max-width: 680px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 44px;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all 0.2s ease-out;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-light));
            color: #fff;
            box-shadow: var(--glow-blue);
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 0 32px rgba(30, 144, 255, 0.6);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(2px);
            box-shadow: 0 0 16px rgba(30, 144, 255, 0.3);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(160, 210, 255, 0.35);
            color: var(--text-primary);
            backdrop-filter: blur(8px);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(160, 210, 255, 0.55);
        }

        .btn-sm {
            min-height: 38px;
            padding: 6px 16px;
            font-size: 14px;
        }

        .btn-block {
            width: 100%;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 12px;
            border-radius: var(--radius-tag);
            background: rgba(23, 230, 200, 0.08);
            border: 1px solid rgba(23, 230, 200, 0.2);
            color: var(--accent-cyan);
            font-size: 13px;
            font-weight: 500;
        }

        .badge svg {
            width: 14px;
            height: 14px;
            fill: var(--accent-cyan);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            background: rgba(30, 144, 255, 0.12);
            border: 1px solid rgba(30, 144, 255, 0.25);
            color: var(--accent-blue);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        .link-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: color 0.2s, transform 0.2s;
        }

        .link-more:hover {
            color: var(--accent-cyan);
            transform: translateX(3px);
        }

        .empty-state {
            grid-column: 1 / -1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 60px 20px;
            text-align: center;
            background: var(--bg-card);
            border: 1px dashed var(--border-light);
            border-radius: var(--radius-card);
            color: var(--text-disabled);
            font-size: 14px;
        }

        .empty-state .empty-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
        }

        .empty-state .empty-icon svg {
            width: 24px;
            height: 24px;
            fill: var(--text-disabled);
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(6, 13, 24, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
        }

        .header-top {
            display: grid;
            grid-template-columns: auto minmax(280px, 520px) auto;
            align-items: center;
            gap: 20px;
            height: 78px;
        }

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

        .brand-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 10px;
            box-shadow: 0 0 18px rgba(30, 144, 255, 0.35);
        }

        .brand-icon svg {
            width: 20px;
            height: 20px;
            fill: #fff;
        }

        .brand-text {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 1px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .header-search {
            position: relative;
            display: flex;
            align-items: center;
        }

        .header-search .search-icon {
            position: absolute;
            left: 14px;
            width: 18px;
            height: 18px;
            fill: var(--text-secondary);
            pointer-events: none;
        }

        .header-search input {
            width: 100%;
            height: 42px;
            padding: 0 16px 0 42px;
            border-radius: var(--radius-input);
            border: 1px solid var(--border-light);
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
            outline: none;
            transition: border-color 0.2s, box-shadow 0.2s;
            font-size: 14px;
        }

        .header-search input::placeholder {
            color: var(--text-disabled);
        }

        .header-search input:focus {
            border-color: var(--accent-blue);
            box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.15);
        }

        .header-search .search-btn {
            position: absolute;
            right: 6px;
            height: 30px;
            padding: 0 14px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-light));
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            transition: opacity 0.2s;
        }

        .header-search .search-btn:hover {
            opacity: 0.9;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            justify-content: flex-end;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border-light);
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: transform 0.3s, opacity 0.3s;
        }

        .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);
        }

        .header-nav {
            border-top: 1px solid rgba(150, 190, 255, 0.08);
        }

        .header-nav .container {
            display: flex;
            align-items: center;
            gap: 4px;
            min-height: 50px;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .header-nav .container::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            position: relative;
            padding: 12px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: color 0.2s;
        }

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

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

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 6px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px rgba(23, 230, 200, 0.5);
        }

        .mobile-menu {
            display: none;
            border-top: 1px solid var(--border-light);
            background: rgba(6, 13, 24, 0.98);
            padding: 16px 0;
        }

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

        .mobile-menu .container {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu .mobile-search {
            display: flex;
            position: relative;
            margin-bottom: 8px;
        }

        .mobile-menu .mobile-search input {
            width: 100%;
            height: 42px;
            padding: 0 16px 0 40px;
            border-radius: var(--radius-input);
            border: 1px solid var(--border-light);
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
            outline: none;
            font-size: 14px;
        }

        .mobile-menu .mobile-search svg {
            position: absolute;
            left: 14px;
            top: 12px;
            width: 18px;
            height: 18px;
            fill: var(--text-secondary);
        }

        .mobile-menu .mobile-nav-link {
            padding: 12px 14px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: background 0.2s, color 0.2s;
        }

        .mobile-menu .mobile-nav-link:hover,
        .mobile-menu .mobile-nav-link.active {
            background: rgba(30, 144, 255, 0.08);
            color: var(--accent-cyan);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 96px 0 80px;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: -1;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
        }

        .hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 20%, rgba(30, 144, 255, 0.15), transparent 60%),
                radial-gradient(ellipse at 80% 80%, rgba(23, 230, 200, 0.1), transparent 50%),
                linear-gradient(180deg, rgba(10, 21, 38, 0.7), var(--bg-primary));
        }

        .hero-content {
            max-width: 880px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -1px;
            text-shadow: 0 0 30px rgba(30, 144, 255, 0.35);
            margin-bottom: 20px;
        }

        .hero-sub {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
            margin: 0 auto 36px;
        }

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

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

        /* ===== Solutions / Bento ===== */
        .solutions {
            padding: var(--space-section) 0;
            position: relative;
        }

        .solutions .section-head {
            text-align: center;
        }

        .solutions .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        .bento-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            grid-auto-rows: 220px;
            gap: 24px;
        }

        .bento-card {
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 28px;
            border-radius: var(--radius-card);
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
        }

        .bento-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
            opacity: 0.6;
        }

        .bento-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.05));
        }

        .bento-card-1 {
            grid-column: 1 / 3;
            justify-content: center;
        }

        .bento-card-2 {
            grid-column: 3 / 4;
            grid-row: 1 / 3;
        }

        .bento-card-3 {
            grid-column: 1 / 2;
        }

        .bento-card-4 {
            grid-column: 2 / 3;
        }

        .bento-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(30, 144, 255, 0.12);
            border: 1px solid rgba(30, 144, 255, 0.2);
            margin-bottom: 18px;
        }

        .bento-icon svg {
            width: 22px;
            height: 22px;
            fill: var(--accent-blue);
        }

        .bento-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .bento-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            max-width: 90%;
        }

        .bento-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.2s;
        }

        .bento-card:hover .bento-link {
            gap: 8px;
        }

        /* ===== Stats ===== */
        .stats-section {
            padding: var(--space-section) 0;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            background: rgba(6, 13, 24, 0.4);
        }

        .stats-wrap {
            display: grid;
            grid-template-columns: 1fr 1.4fr;
            gap: 60px;
            align-items: center;
        }

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

        .stats-intro p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

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

        .stat-item {
            padding: 28px;
            border-radius: var(--radius-card);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .stat-item:hover {
            border-color: rgba(23, 230, 200, 0.3);
            box-shadow: var(--shadow-hover);
        }

        .stat-num {
            font-family: var(--font-num);
            font-size: 42px;
            font-weight: 700;
            color: var(--accent-cyan);
            line-height: 1;
            display: block;
            margin-bottom: 10px;
            text-shadow: 0 0 20px rgba(23, 230, 200, 0.3);
        }

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

        .stat-item:last-child .stat-num {
            color: var(--accent-amber);
            text-shadow: 0 0 20px rgba(255, 184, 77, 0.3);
        }

        /* ===== News ===== */
        .news-section {
            padding: var(--space-section) 0;
        }

        .news-section .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
        }

        .news-grid {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 32px;
        }

        .news-featured {
            position: relative;
        }

        .news-card-featured {
            display: block;
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
        }

        .news-card-featured:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(30, 144, 255, 0.35);
        }

        .news-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease-out;
        }

        .news-card-featured:hover .news-cover img {
            transform: scale(1.04);
        }

        .news-cover .tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(10, 21, 38, 0.7);
            border-color: rgba(30, 144, 255, 0.4);
            color: var(--accent-blue);
            backdrop-filter: blur(6px);
        }

        .news-body {
            padding: 24px;
        }

        .news-body h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-body time {
            font-family: var(--font-num);
            font-size: 13px;
            color: var(--text-disabled);
        }

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

        .news-item {
            display: block;
            padding: 20px 22px;
            border-radius: 14px;
            background: var(--bg-card);
            border: 1px solid transparent;
            border-left: 2px solid transparent;
            transition: background 0.2s, border-color 0.2s, transform 0.2s;
        }

        .news-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            border-left-color: var(--accent-cyan);
            transform: translateX(3px);
        }

        .news-item-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 8px;
            gap: 10px;
        }

        .news-item-top time {
            font-family: var(--font-num);
            font-size: 12px;
            color: var(--text-disabled);
        }

        .news-item h4 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        /* ===== Categories ===== */
        .categories {
            padding: var(--space-section) 0;
            border-top: 1px solid var(--border-light);
            background: rgba(6, 13, 24, 0.3);
        }

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

        .cat-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            display: block;
            aspect-ratio: 4 / 3;
            border: 1px solid var(--border-light);
            transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
        }

        .cat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(30, 144, 255, 0.4);
        }

        .cat-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease-out;
        }

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

        .cat-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 24px;
            background: linear-gradient(180deg, rgba(10, 21, 38, 0.1) 0%, rgba(10, 21, 38, 0.75) 55%, rgba(10, 21, 38, 0.92) 100%);
        }

        .cat-overlay h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .cat-overlay p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cat-overlay span {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.2s;
        }

        .cat-card:hover .cat-overlay span {
            gap: 8px;
        }

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

        .faq-section h2 {
            text-align: center;
            margin-bottom: 40px;
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border-radius: var(--radius-card);
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--border-glass);
            overflow: hidden;
            transition: border-color 0.2s;
        }

        .faq-item.open {
            border-color: rgba(23, 230, 200, 0.3);
        }

        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            color: var(--text-primary);
            background: transparent;
            transition: background 0.2s;
        }

        .faq-q:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            line-height: 1;
            background: rgba(30, 144, 255, 0.1);
            border: 1px solid rgba(30, 144, 255, 0.25);
            color: var(--accent-blue);
            transition: transform 0.3s, background 0.3s, color 0.3s;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(23, 230, 200, 0.1);
            border-color: rgba(23, 230, 200, 0.3);
            color: var(--accent-cyan);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }

        .faq-a-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-light);
            padding-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand .brand-text {
            font-size: 24px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-brand .brand-text svg {
            width: 22px;
            height: 22px;
            fill: var(--accent-blue);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-top: 16px;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--text-secondary);
            padding: 6px 0;
            transition: color 0.2s, transform 0.2s;
        }

        .footer-col a:hover {
            color: var(--accent-cyan);
            transform: translateX(3px);
        }

        .footer-col p {
            font-size: 13px;
            color: var(--text-secondary);
            padding: 3px 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(150, 190, 255, 0.08);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 12px;
            color: var(--text-disabled);
        }

        /* ===== Modal ===== */
        .modal-overlay {
            position: fixed;
            inset: 0;
            z-index: 2000;
            background: rgba(4, 8, 16, 0.7);
            backdrop-filter: blur(8px);
            display: none;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .modal-overlay.open {
            display: flex;
        }

        .modal-box {
            width: 100%;
            max-width: 500px;
            border-radius: 20px;
            background: rgba(13, 27, 48, 0.96);
            backdrop-filter: blur(24px);
            border: 1px solid var(--border-glass);
            box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
            padding: 36px;
            position: relative;
            animation: modalIn 0.3s ease-out;
        }

        @keyframes modalIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid transparent;
            transition: background 0.2s, color 0.2s;
        }

        .modal-close:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-primary);
        }

        .modal-box h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .modal-box .modal-sub {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .modal-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .modal-form input,
        .modal-form select,
        .modal-form textarea {
            width: 100%;
            padding: 12px 14px;
            border-radius: var(--radius-input);
            border: 1px solid var(--border-light);
            background: rgba(10, 21, 38, 0.6);
            color: var(--text-primary);
            outline: none;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .modal-form input:focus,
        .modal-form select:focus,
        .modal-form textarea:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(23, 230, 200, 0.12);
        }

        .modal-form textarea {
            min-height: 100px;
            resize: vertical;
        }

        .modal-form select option {
            background: var(--bg-deep);
            color: var(--text-primary);
        }

        .privacy-note {
            font-size: 12px;
            color: var(--text-disabled);
            text-align: center;
            margin-top: 12px;
        }

        .privacy-note a {
            color: var(--text-secondary);
            text-decoration: underline;
        }

        /* ===== Float Button ===== */
        .float-consult {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 1500;
            display: flex;
            align-items: center;
            gap: 10px;
            min-height: 48px;
            padding: 10px 20px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-light));
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            box-shadow: var(--glow-blue);
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .float-consult:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(30, 144, 255, 0.6);
        }

        .pulse-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            position: relative;
        }

        .pulse-dot::after {
            content: "";
            position: absolute;
            inset: -4px;
            border-radius: 50%;
            border: 2px solid var(--success);
            animation: pulse 1.6s ease-out infinite;
        }

        @keyframes pulse {
            0% {
                transform: scale(0.6);
                opacity: 0.8;
            }
            70% {
                transform: scale(1.6);
                opacity: 0;
            }
            100% {
                transform: scale(1.6);
                opacity: 0;
            }
        }

        /* ===== Reveal Animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(12px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .stats-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .bento-grid {
                grid-auto-rows: 200px;
                gap: 16px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 767px) {
            :root {
                --space-section: 64px;
            }
            .header-top {
                grid-template-columns: auto 1fr auto;
                height: 64px;
                gap: 12px;
            }
            .header-search {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-nav .container {
                display: none;
            }
            .hero {
                padding: 60px 0 52px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-sub {
                font-size: 15px;
                margin-bottom: 28px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 320px;
            }
            .hero-badges {
                gap: 8px;
            }
            .bento-grid {
                grid-template-columns: 1fr;
                grid-auto-rows: auto;
                gap: 16px;
            }
            .bento-card-1,
            .bento-card-2,
            .bento-card-3,
            .bento-card-4 {
                grid-column: auto;
                grid-row: auto;
            }
            .bento-card {
                padding: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-item {
                padding: 20px;
            }
            .stat-num {
                font-size: 32px;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .news-section .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .cat-grid {
                grid-template-columns: 1fr;
            }
            .cat-card {
                aspect-ratio: 16 / 10;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .modal-box {
                padding: 28px 20px;
            }
            .float-consult {
                bottom: 20px;
                right: 20px;
                padding: 8px 16px;
                font-size: 13px;
            }
            .btn {
                padding: 10px 18px;
            }
        }

        @media (max-width: 480px) {
            .brand-text {
                font-size: 18px;
            }
            .brand-icon {
                width: 32px;
                height: 32px;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero-badges {
                flex-direction: column;
                align-items: center;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
:root {
            --primary: #1E90FF;
            --primary-light: #12B5E8;
            --accent-cyan: #17E6C8;
            --accent-amber: #FFB84D;
            --bg-main: #0A1526;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-deep: #060D18;
            --border-glass: rgba(148, 210, 255, 0.22);
            --border-light: rgba(150, 190, 255, 0.12);
            --text-main: #EAF2FF;
            --text-sub: #94A9C7;
            --text-disable: #5A6F8C;
            --success-color: #00E0A0;
            --error-color: #FF5C7A;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 12px;
            --radius-tag: 999px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 48px rgba(0, 90, 180, 0.18);
            --shadow-glow: 0 0 24px rgba(30, 144, 255, 0.4);
            --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --font-display: "DIN Alternate", "Bebas Neue", "Arial Narrow", sans-serif;
            --space-section: 96px;
            --container-max: 1200px;
            --container-pad: 24px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background-color: var(--bg-main);
            background-image:
                linear-gradient(rgba(30, 144, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(30, 144, 255, 0.03) 1px, transparent 1px);
            background-size: 48px 48px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

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

        .site-header {
            background: rgba(5, 12, 24, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-top {
            display: grid;
            grid-template-columns: auto minmax(280px, 520px) auto;
            align-items: center;
            gap: 32px;
            padding: 14px 24px;
            max-width: var(--container-max);
            margin: 0 auto;
        }

        .brand-text {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .brand-text svg {
            width: 28px;
            height: 28px;
            fill: var(--accent-cyan);
            filter: drop-shadow(0 0 6px rgba(23, 230, 200, 0.5));
        }

        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-input);
            padding: 0 8px 0 14px;
            height: 42px;
            transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out;
        }

        .header-search:focus-within {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(23, 230, 200, 0.12);
        }

        .header-search svg {
            width: 16px;
            height: 16px;
            fill: var(--text-sub);
            margin-right: 8px;
            flex-shrink: 0;
        }

        .header-search input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 14px;
            height: 100%;
        }

        .header-search input::placeholder {
            color: var(--text-disable);
        }

        .header-search button {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border: none;
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 8px;
            cursor: pointer;
            transition: filter 0.2s ease-out, transform 0.1s ease-out;
        }

        .header-search button:hover {
            filter: brightness(1.1);
        }

        .header-search button:active {
            transform: translateY(1px);
        }

        .header-enter-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-glow);
            transition: filter 0.2s ease-out, transform 0.1s ease-out, box-shadow 0.2s ease-out;
            white-space: nowrap;
        }

        .header-enter-btn:hover {
            color: #fff;
            filter: brightness(1.1);
            box-shadow: 0 0 32px rgba(30, 144, 255, 0.55);
            transform: translateY(-1px);
        }

        .header-hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            cursor: pointer;
            padding: 6px;
        }

        .header-hamburger svg {
            width: 26px;
            height: 26px;
            fill: currentColor;
        }

        .header-nav {
            border-top: 1px solid rgba(150, 190, 255, 0.06);
            background: rgba(7, 16, 30, 0.85);
        }

        .header-nav .container {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .header-nav .container::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            display: inline-block;
            padding: 13px 18px;
            font-size: 15px;
            color: var(--text-sub);
            border-bottom: 2px solid transparent;
            transition: color 0.2s ease-out, border-color 0.2s ease-out;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--text-main);
        }

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

        .mobile-menu {
            display: none;
            background: var(--bg-deep);
            border-bottom: 1px solid var(--border-light);
            padding: 16px 24px;
        }

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

        .mobile-menu .mobile-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-input);
            padding: 0 8px 0 14px;
            height: 40px;
            margin-bottom: 14px;
        }

        .mobile-menu .mobile-search input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 14px;
        }

        .mobile-menu .mobile-search svg {
            width: 16px;
            height: 16px;
            fill: var(--text-sub);
            margin-right: 8px;
        }

        .mobile-menu .mobile-links {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .mobile-menu .mobile-links a {
            display: block;
            padding: 12px 8px;
            font-size: 15px;
            color: var(--text-sub);
            border-radius: 8px;
            transition: background 0.2s ease-out, color 0.2s ease-out;
        }

        .mobile-menu .mobile-links a:hover,
        .mobile-menu .mobile-links a.active {
            background: rgba(255, 255, 255, 0.06);
            color: var(--accent-cyan);
        }

        .category-hero {
            position: relative;
            padding: 90px 0 64px;
            background:
                linear-gradient(rgba(10, 21, 38, 0.88), rgba(10, 21, 38, 0.92)),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--border-light);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -160px;
            right: -160px;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(30, 144, 255, 0.14), transparent 70%);
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -120px;
            left: -120px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(23, 230, 200, 0.08), transparent 70%);
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .hero-crumb {
            font-size: 13px;
            color: var(--text-disable);
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }

        .hero-crumb a {
            color: var(--text-sub);
        }

        .hero-crumb a:hover {
            color: var(--accent-cyan);
        }

        .hero-crumb .sep {
            margin: 0 8px;
            color: var(--text-disable);
        }

        .category-hero h1 {
            font-size: 44px;
            line-height: 1.2;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
            text-shadow: 0 0 30px rgba(30, 144, 255, 0.3);
        }

        .category-hero .hero-subtitle {
            font-size: 17px;
            line-height: 1.7;
            color: var(--text-sub);
            max-width: 680px;
            margin: 0 auto 28px;
        }

        .hero-badges {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-tag);
            font-size: 13px;
            color: var(--text-sub);
        }

        .hero-badge svg {
            width: 14px;
            height: 14px;
            fill: var(--accent-cyan);
        }

        .category-content {
            padding: var(--space-section) 0;
        }

        .content-layout {
            display: grid;
            grid-template-columns: 240px minmax(0, 1fr);
            gap: 48px;
            align-items: start;
        }

        .toc-sidebar {
            position: sticky;
            top: 130px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 20px;
        }

        .toc-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-light);
            margin-bottom: 12px;
        }

        .toc-list {
            list-style: none;
        }

        .toc-list li {
            margin-bottom: 4px;
        }

        .toc-list a {
            display: block;
            padding: 8px 10px;
            font-size: 13px;
            color: var(--text-sub);
            border-radius: 8px;
            border-left: 2px solid transparent;
            transition: background 0.2s ease-out, color 0.2s ease-out, border-color 0.2s ease-out;
        }

        .toc-list a:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-main);
        }

        .toc-list a.active {
            color: var(--accent-cyan);
            border-left-color: var(--accent-cyan);
            background: rgba(23, 230, 200, 0.06);
        }

        .article-body {
            min-width: 0;
        }

        .article-body h2 {
            font-size: 30px;
            line-height: 1.3;
            font-weight: 700;
            margin: 56px 0 16px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-light);
            position: relative;
        }

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

        .article-body h2::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 56px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent);
            border-radius: 2px;
        }

        .article-body h3 {
            font-size: 20px;
            line-height: 1.4;
            font-weight: 600;
            margin: 36px 0 14px;
            padding-left: 14px;
            border-left: 3px solid var(--accent-cyan);
        }

        .article-body p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-sub);
            margin-bottom: 20px;
        }

        .article-body .intro-block {
            background: rgba(255, 255, 255, 0.05);
            border-left: 3px solid var(--primary);
            border-radius: 0 12px 12px 0;
            padding: 20px 24px;
            margin-bottom: 32px;
        }

        .article-body .intro-block p {
            margin-bottom: 0;
        }

        .section-banner {
            border-radius: var(--radius-card);
            overflow: hidden;
            margin: 32px 0;
            position: relative;
        }

        .section-banner img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }

        .section-banner .banner-text {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 40px 24px 20px;
            background: linear-gradient(transparent, rgba(6, 13, 24, 0.88));
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
        }

        .feature-list {
            list-style: none;
            margin: 20px 0 28px;
        }

        .feature-list li {
            position: relative;
            padding: 10px 0 10px 26px;
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-sub);
        }

        .feature-list li::before {
            content: '';
            position: absolute;
            left: 6px;
            top: 18px;
            width: 8px;
            height: 8px;
            background: var(--accent-cyan);
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(23, 230, 200, 0.5);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin: 24px 0 32px;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
            position: relative;
            overflow: hidden;
        }

        .step-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(23, 230, 200, 0.5), transparent);
        }

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

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(30, 144, 255, 0.15);
            border: 1px solid rgba(30, 144, 255, 0.3);
            color: var(--primary);
            font-family: var(--font-display);
            font-size: 20px;
            font-weight: 700;
            border-radius: 50%;
            margin-bottom: 14px;
        }

        .step-card h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .step-card p {
            font-size: 13px;
            line-height: 1.6;
            color: var(--text-sub);
            margin-bottom: 0;
        }

        .info-table-wrap {
            margin: 24px 0 32px;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            overflow-x: auto;
        }

        .info-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 560px;
        }

        .info-table th {
            background: rgba(30, 144, 255, 0.1);
            color: var(--text-main);
            font-weight: 600;
            text-align: left;
            padding: 14px 18px;
            border-bottom: 1px solid var(--border-light);
            white-space: nowrap;
        }

        .info-table td {
            padding: 14px 18px;
            color: var(--text-sub);
            border-bottom: 1px solid rgba(150, 190, 255, 0.06);
        }

        .info-table tr:last-child td {
            border-bottom: none;
        }

        .info-table tr:hover td {
            background: rgba(255, 255, 255, 0.03);
        }

        .alert-block {
            display: flex;
            gap: 14px;
            background: rgba(255, 184, 77, 0.06);
            border: 1px solid rgba(255, 184, 77, 0.25);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            margin: 28px 0;
        }

        .alert-block svg {
            width: 20px;
            height: 20px;
            fill: var(--accent-amber);
            flex-shrink: 0;
            margin-top: 3px;
        }

        .alert-block p {
            margin-bottom: 0;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-sub);
        }

        .faq-mini {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin: 24px 0 32px;
        }

        .faq-mini-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: 12px;
            overflow: hidden;
        }

        .faq-mini-q {
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background 0.2s ease-out;
        }

        .faq-mini-q:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .faq-mini-q .plus {
            width: 20px;
            height: 20px;
            border: 1px solid var(--border-glass);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--accent-cyan);
            transition: transform 0.2s ease-out;
            flex-shrink: 0;
        }

        .faq-mini-item.open .faq-mini-q .plus {
            transform: rotate(45deg);
        }

        .faq-mini-a {
            display: none;
            padding: 0 20px 16px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-sub);
        }

        .faq-mini-item.open .faq-mini-a {
            display: block;
        }

        .cta-section {
            background: rgba(9, 20, 36, 0.9);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(30, 144, 255, 0.12), transparent 70%);
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 16px;
            color: var(--text-sub);
            margin-bottom: 28px;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            padding: 14px 36px;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-glow);
            transition: filter 0.2s ease-out, transform 0.15s ease-out, box-shadow 0.2s ease-out;
        }

        .cta-btn:hover {
            color: #fff;
            filter: brightness(1.1);
            box-shadow: 0 0 36px rgba(30, 144, 255, 0.6);
            transform: translateY(-2px);
        }

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

        .cta-btn svg {
            width: 18px;
            height: 18px;
            fill: currentColor;
        }

        .cta-privacy {
            font-size: 12px;
            color: var(--text-disable);
            margin-top: 16px;
        }

        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-light);
            padding-top: 56px;
        }

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

        .footer-brand .brand-text {
            font-size: 20px;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--text-disable);
            max-width: 260px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--text-sub);
            padding: 5px 0;
            transition: color 0.2s ease-out;
        }

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

        .footer-col p {
            font-size: 13px;
            color: var(--text-sub);
            padding: 5px 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(150, 190, 255, 0.08);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 12px;
            color: var(--text-disable);
        }

        .float-consult {
            position: fixed;
            bottom: 32px;
            right: 32px;
            z-index: 80;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-glow);
            cursor: pointer;
            border: none;
            transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
        }

        .float-consult:hover {
            transform: scale(1.06);
        }

        .float-consult svg {
            width: 24px;
            height: 24px;
            fill: #fff;
        }

        .float-consult::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            border-radius: 50%;
            background: rgba(30, 144, 255, 0.4);
            animation: pulse-ring 2s infinite;
            z-index: -1;
        }

        @keyframes pulse-ring {
            0% {
                transform: scale(1);
                opacity: 0.6;
            }
            100% {
                transform: scale(1.6);
                opacity: 0;
            }
        }

        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(4, 10, 20, 0.72);
            backdrop-filter: blur(6px);
            z-index: 200;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .modal-overlay.open {
            display: flex;
        }

        .modal-box {
            width: 500px;
            max-width: 100%;
            background: rgba(13, 27, 48, 0.96);
            backdrop-filter: blur(18px);
            border: 1px solid var(--border-glass);
            border-radius: 20px;
            padding: 36px 32px 24px;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .modal-box .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            background: none;
            border: none;
            color: var(--text-disable);
            font-size: 20px;
            cursor: pointer;
            padding: 6px;
            transition: color 0.2s ease-out;
        }

        .modal-box .modal-close:hover {
            color: var(--text-main);
        }

        .modal-box h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .modal-box .modal-sub {
            font-size: 13px;
            color: var(--text-disable);
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            color: var(--text-sub);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            background: rgba(6, 16, 30, 0.8);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-input);
            color: var(--text-main);
            font-size: 14px;
            padding: 11px 14px;
            outline: none;
            transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out;
            resize: vertical;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(23, 230, 200, 0.12);
        }

        .form-group textarea {
            min-height: 90px;
        }

        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 12 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394A9C7' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            background-size: 12px;
            padding-right: 40px;
        }

        .modal-submit {
            width: 100%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border: none;
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 13px 0;
            border-radius: var(--radius-btn);
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(30, 144, 255, 0.25);
            transition: filter 0.2s ease-out, transform 0.1s ease-out;
            margin-top: 8px;
        }

        .modal-submit:hover {
            filter: brightness(1.1);
        }

        .modal-submit:active {
            transform: translateY(1px);
        }

        .modal-privacy {
            font-size: 12px;
            color: var(--text-disable);
            text-align: center;
            margin-top: 14px;
            line-height: 1.5;
        }

        .modal-privacy a {
            color: var(--text-sub);
            text-decoration: underline;
            font-size: 12px;
        }

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

        @media (max-width: 992px) {
            .content-layout {
                grid-template-columns: 1fr;
            }

            .toc-sidebar {
                position: static;
                top: auto;
                margin-bottom: 28px;
            }

            .toc-list {
                display: flex;
                flex-wrap: wrap;
                gap: 4px;
            }

            .toc-list li {
                margin-bottom: 0;
            }

            .toc-list a {
                border-left: none;
                border-bottom: 2px solid transparent;
                border-radius: 6px 6px 0 0;
                padding: 7px 12px;
            }

            .toc-list a.active {
                border-left-color: transparent;
                border-bottom-color: var(--accent-cyan);
                background: transparent;
            }

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

        @media (max-width: 768px) {
            :root {
                --space-section: 64px;
                --container-pad: 16px;
            }

            .header-top {
                grid-template-columns: 1fr auto;
                gap: 12px;
                padding: 12px 16px;
            }

            .header-search {
                display: none;
            }

            .header-hamburger {
                display: inline-flex;
            }

            .header-enter-btn {
                display: none;
            }

            .header-nav {
                display: none;
            }

            .category-hero {
                padding: 56px 0 48px;
            }

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

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

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

            .article-body h3 {
                font-size: 17px;
            }

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

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

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

            .hero-badges {
                gap: 10px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .float-consult {
                bottom: 20px;
                right: 20px;
            }

            .section-banner img {
                height: 220px;
            }
        }

/* roulang page: category1 */
:root {
  --bg: #0A1526;
  --bg-deep: #060D18;
  --bg-card: rgba(255, 255, 255, 0.06);
  --glass: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.03));
  --stroke: rgba(148, 210, 255, 0.22);
  --stroke-soft: rgba(150, 190, 255, 0.12);
  --blue: #1E90FF;
  --cyan: #17E6C8;
  --amber: #FFB84D;
  --text: #EAF2FF;
  --text-dim: #94A9C7;
  --text-mute: #5A6F8C;
  --success: #00E0A0;
  --error: #FF5C7A;
  --r-card: 16px;
  --r-btn: 10px;
  --r-input: 12px;
  --r-tag: 999px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 48px rgba(0, 90, 180, 0.18);
  --glow-blue: 0 0 24px rgba(30, 144, 255, 0.4);
  --container: 1200px;
  --space: 96px;
  --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-num: "DIN Alternate", "Bebas Neue", "Arial Narrow", sans-serif;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  background-color: var(--bg);
  background-image: linear-gradient(rgba(148, 210, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(148, 210, 255, 0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
  color: inherit;
}
input, textarea, select {
  font-family: inherit;
  font-size: 14px;
}
ul, ol {
  list-style: none;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  clip: rect(0, 0, 0, 0);
  overflow: hidden;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 24px;
  border-radius: var(--r-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  transition: all 0.2s ease-out;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, #1E90FF, #12B5E8);
  color: #fff;
  box-shadow: var(--glow-blue);
}
.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 32px rgba(30, 144, 255, 0.55);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(2px);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(234, 242, 255, 0.5);
  color: var(--text);
  backdrop-filter: blur(12px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-hover);
}
.btn-sm {
  min-height: 38px;
  padding: 0 18px;
  font-size: 14px;
}
.btn-lg {
  min-height: 52px;
  padding: 0 34px;
  font-size: 16px;
}

/* Badges & tags */
.badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--r-tag);
  font-size: 12px;
  font-weight: 500;
  background: rgba(30, 144, 255, 0.14);
  color: #7cc4ff;
  border: 1px solid rgba(30, 144, 255, 0.28);
}
.badge-amber {
  background: rgba(255, 184, 77, 0.12);
  color: var(--amber);
  border-color: rgba(255, 184, 77, 0.3);
}
.badge-cyan {
  background: rgba(23, 230, 200, 0.1);
  color: var(--cyan);
  border-color: rgba(23, 230, 200, 0.28);
}

/* Section */
.section {
  padding: 80px 0;
}
.section-head {
  margin-bottom: 40px;
}
.section-head h2 {
  font-size: 30px;
  line-height: 1.3;
  font-weight: 700;
}
.section-head .section-sub {
  color: var(--text-dim);
  font-size: 15px;
  margin-top: 8px;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 13, 24, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--stroke-soft);
}
.header-top-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  min-height: 68px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(30, 144, 255, 0.25), rgba(23, 230, 200, 0.15));
  border: 1px solid var(--stroke);
  border-radius: 10px;
  color: var(--cyan);
  box-shadow: 0 0 18px rgba(30, 144, 255, 0.25);
}
.brand-icon svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}
.brand-text {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
  line-height: 1.2;
}
.brand-text small {
  display: block;
  font-size: 11px;
  color: var(--text-dim);
  font-weight: 400;
  letter-spacing: 0.08em;
}
.header-search {
  position: relative;
  max-width: 520px;
  width: 100%;
  justify-self: center;
}
.header-search .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-mute);
  pointer-events: none;
}
.header-search input {
  width: 100%;
  height: 44px;
  padding: 0 96px 0 44px;
  border-radius: var(--r-input);
  border: 1px solid var(--stroke-soft);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out;
}
.header-search input::placeholder {
  color: var(--text-mute);
}
.header-search input:focus {
  border-color: rgba(23, 230, 200, 0.5);
  box-shadow: 0 0 0 3px rgba(23, 230, 200, 0.12);
}
.header-search .search-btn {
  position: absolute;
  right: 5px;
  top: 5px;
  height: 34px;
  padding: 0 16px;
  border-radius: 8px;
  background: linear-gradient(135deg, #1E90FF, #12B5E8);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 0 14px rgba(30, 144, 255, 0.3);
  transition: filter 0.2s ease-out;
}
.header-search .search-btn:hover {
  filter: brightness(1.1);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-self: end;
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--stroke-soft);
  background: rgba(255, 255, 255, 0.04);
  align-items: center;
  justify-content: center;
  color: var(--text);
}
.nav-toggle svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
}
.header-nav {
  border-top: 1px solid rgba(150, 190, 255, 0.08);
}
.header-nav .container {
  display: flex;
  align-items: center;
  gap: 34px;
  min-height: 50px;
  overflow-x: auto;
  scrollbar-width: none;
}
.header-nav::-webkit-scrollbar {
  display: none;
}
.nav-link {
  position: relative;
  font-size: 15px;
  color: var(--text-dim);
  padding: 14px 0;
  white-space: nowrap;
  transition: color 0.2s ease-out;
  font-weight: 500;
}
.nav-link:hover {
  color: var(--text);
}
.nav-link.active {
  color: var(--cyan);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  border-radius: 2px 2px 0 0;
  box-shadow: 0 0 12px rgba(23, 230, 200, 0.5);
}
.mobile-drawer {
  display: none;
  padding: 16px 24px 24px;
  background: var(--bg-deep);
  border-top: 1px solid var(--stroke-soft);
}
.mobile-drawer .drawer-search {
  position: relative;
  margin-bottom: 16px;
}
.mobile-drawer .drawer-search input {
  width: 100%;
  height: 44px;
  padding: 0 84px 0 40px;
  border-radius: var(--r-input);
  border: 1px solid var(--stroke-soft);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  outline: none;
}
.mobile-drawer .drawer-search input:focus {
  border-color: rgba(23, 230, 200, 0.5);
}
.mobile-drawer .drawer-search .search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-mute);
}
.mobile-drawer .drawer-search .search-btn {
  position: absolute;
  right: 4px;
  top: 4px;
  height: 36px;
  padding: 0 14px;
  border-radius: 8px;
  background: linear-gradient(135deg, #1E90FF, #12B5E8);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}
.drawer-link {
  display: block;
  padding: 13px 6px;
  border-bottom: 1px solid rgba(150, 190, 255, 0.08);
  color: var(--text-dim);
  font-size: 15px;
  transition: color 0.2s ease-out;
}
.drawer-link:hover,
.drawer-link.active {
  color: var(--cyan);
}

/* ========== Category Hero ========== */
.category-hero {
  position: relative;
  padding: 72px 0 56px;
  background: linear-gradient(rgba(10, 21, 38, 0.82), rgba(10, 21, 38, 0.94)), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  border-bottom: 1px solid var(--stroke-soft);
  overflow: hidden;
}
.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(148, 210, 255, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(148, 210, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}
.category-hero::after {
  content: "";
  position: absolute;
  top: -180px;
  left: -120px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(30, 144, 255, 0.16), transparent 60%);
  pointer-events: none;
}
.category-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 860px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-mute);
  margin-bottom: 24px;
}
.breadcrumb a {
  color: var(--text-dim);
  transition: color 0.2s ease-out;
}
.breadcrumb a:hover {
  color: var(--cyan);
}
.hero-title {
  font-size: 44px;
  line-height: 1.2;
  font-weight: 700;
  text-shadow: 0 0 30px rgba(30, 144, 255, 0.35);
  margin-bottom: 16px;
}
.hero-subtitle {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 680px;
  line-height: 1.8;
  margin-bottom: 30px;
}
.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 34px;
}
.trust-badges {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 22px;
  border-top: 1px solid var(--stroke-soft);
}
.trust-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--stroke-soft);
  padding: 6px 14px;
  border-radius: var(--r-tag);
}
.trust-item svg {
  width: 15px;
  height: 15px;
  color: var(--cyan);
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ========== Category layout ========== */
.category-section {
  padding: 72px 0 24px;
}
.category-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 48px;
  align-items: start;
}
.toc-sidebar {
  position: sticky;
  top: 140px;
  border: 1px solid var(--stroke-soft);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(16px);
  border-radius: var(--r-card);
  padding: 24px 20px;
}
.toc-sidebar h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-mute);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.toc-sidebar h3::before {
  content: "";
  width: 3px;
  height: 14px;
  background: linear-gradient(180deg, var(--cyan), transparent);
  border-radius: 2px;
}
.toc-sidebar ul li + li {
  margin-top: 4px;
}
.toc-sidebar a {
  display: block;
  padding: 9px 12px;
  font-size: 14px;
  color: var(--text-dim);
  border-radius: 8px;
  border-left: 2px solid transparent;
  transition: background 0.2s ease-out, color 0.2s ease-out;
}
.toc-sidebar a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}
.toc-sidebar a.active {
  color: var(--cyan);
  background: rgba(23, 230, 200, 0.06);
  border-left-color: var(--cyan);
}
.category-main {
  min-width: 0;
}
.content-block {
  margin-bottom: 56px;
}
.content-block .block-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}
.content-block .block-head .block-index {
  font-family: var(--font-num);
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(30, 144, 255, 0.55);
  flex-shrink: 0;
}
.content-block .block-head h2 {
  font-size: 30px;
  line-height: 1.3;
  font-weight: 700;
}
.content-block .block-head p {
  font-size: 14px;
  color: var(--text-dim);
  margin-top: 4px;
}
.content-block h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  margin: 28px 0 14px;
  padding-left: 14px;
  border-left: 3px solid var(--cyan);
}
.content-block p {
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.8;
  margin-bottom: 16px;
}
.content-points {
  margin: 16px 0 20px;
}
.content-points li {
  position: relative;
  padding-left: 22px;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 10px;
}
.content-points li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(23, 230, 200, 0.5);
}
.content-points.is-squares li::before {
  border-radius: 2px;
  background: var(--blue);
  box-shadow: 0 0 8px rgba(30, 144, 255, 0.45);
}
.content-steps {
  counter-reset: step;
  margin: 16px 0 20px;
}
.content-steps li {
  position: relative;
  counter-increment: step;
  padding-left: 46px;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 16px;
}
.content-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(23, 230, 200, 0.1);
  border: 1px solid rgba(23, 230, 200, 0.3);
}
.content-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--stroke-soft);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  margin: 18px 0 22px;
}
.content-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}
.content-table th {
  text-align: left;
  padding: 14px 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-mute);
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--stroke-soft);
  letter-spacing: 0.04em;
}
.content-table td {
  padding: 14px 18px;
  font-size: 14.5px;
  color: var(--text-dim);
  border-bottom: 1px solid rgba(150, 190, 255, 0.07);
}
.content-table tr:last-child td {
  border-bottom: none;
}
.content-table td:first-child {
  color: var(--text);
  font-weight: 500;
}
.media-frame {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--stroke-soft);
  box-shadow: var(--shadow);
  margin: 24px 0 28px;
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame.is-16x9 {
  aspect-ratio: 16 / 9;
}
.media-frame.is-4x3 {
  aspect-ratio: 4 / 3;
}
.media-frame .media-cover {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 2;
}
.notice-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 20px;
  border-radius: 14px;
  background: var(--glass);
  border: 1px solid var(--stroke-soft);
  backdrop-filter: blur(18px);
  margin: 20px 0;
}
.notice-card svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--amber);
  margin-top: 3px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.notice-card p {
  margin: 0;
  font-size: 14px;
  color: var(--text-dim);
}

/* ========== FAQ ========== */
.faq-section {
  padding: 72px 0;
  background: rgba(6, 13, 24, 0.5);
  border-top: 1px solid var(--stroke-soft);
  border-bottom: 1px solid var(--stroke-soft);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--glass);
  border: 1px solid var(--stroke-soft);
  border-radius: var(--r-card);
  margin-bottom: 12px;
  backdrop-filter: blur(18px);
  overflow: hidden;
  transition: border-color 0.2s ease-out;
}
.faq-item.open {
  border-color: rgba(23, 230, 200, 0.35);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  min-height: 60px;
  transition: color 0.2s ease-out;
}
.faq-question:hover {
  color: var(--cyan);
}
.faq-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--stroke-soft);
  background: rgba(255, 255, 255, 0.04);
  color: var(--cyan);
  transition: transform 0.25s ease-out, background 0.25s ease-out;
}
.faq-icon svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: rgba(23, 230, 200, 0.12);
  border-color: rgba(23, 230, 200, 0.4);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}
.faq-answer-inner {
  padding: 0 24px 22px;
  border-top: 1px solid rgba(150, 190, 255, 0.07);
  padding-top: 16px;
  font-size: 14.5px;
  color: var(--text-dim);
  line-height: 1.8;
}

/* ========== CTA ========== */
.cta-section {
  padding: 80px 0;
}
.cta-card {
  position: relative;
  text-align: center;
  padding: 64px 40px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(30, 144, 255, 0.12), rgba(23, 230, 200, 0.06)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  border: 1px solid var(--stroke);
  overflow: hidden;
  backdrop-filter: blur(14px);
}
.cta-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 21, 38, 0.62);
  pointer-events: none;
}
.cta-card-inner {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}
.cta-card h2 {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 14px;
  text-shadow: 0 0 30px rgba(30, 144, 255, 0.3);
}
.cta-card p {
  font-size: 15px;
  color: var(--text-dim);
  margin-bottom: 30px;
  line-height: 1.8;
}
.cta-privacy {
  font-size: 12px;
  color: var(--text-mute);
  margin-top: 14px;
}

/* ========== Footer ========== */
.site-footer {
  background: #060D18;
  border-top: 1px solid var(--stroke-soft);
  padding-top: 56px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .brand-text {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
}
.footer-brand .brand-text svg {
  width: 30px;
  height: 30px;
  fill: var(--cyan);
}
.footer-brand p {
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 1.8;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 2.1;
  transition: color 0.2s ease-out;
}
.footer-col a:hover {
  color: var(--cyan);
}
.footer-col p {
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 2.1;
  margin: 0;
}
.footer-bottom {
  border-top: 1px solid rgba(150, 190, 255, 0.08);
  padding: 20px 0;
}
.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px;
}
.footer-bottom p {
  font-size: 12px;
  color: var(--text-mute);
  text-align: center;
}

/* ========== Motion ========== */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
  }
  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* ========== Responsive ========== */
@media (max-width: 991px) {
  .header-top-inner {
    grid-template-columns: auto 1fr;
  }
  .header-search {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .header-nav {
    display: none;
  }
  .mobile-drawer.open {
    display: block;
    position: fixed;
    left: 0;
    right: 0;
    top: 68px;
    bottom: 0;
    z-index: 99;
    overflow-y: auto;
    background: var(--bg-deep);
  }
  .category-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .toc-sidebar {
    position: static;
    padding: 16px;
  }
  .toc-sidebar ul {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
  }
  .toc-sidebar ul::-webkit-scrollbar {
    display: none;
  }
  .toc-sidebar ul li + li {
    margin-top: 0;
  }
  .toc-sidebar a {
    white-space: nowrap;
    border-left: none;
    border-bottom: 2px solid transparent;
    padding: 8px 14px;
    font-size: 13px;
    border-radius: var(--r-tag);
    background: rgba(255, 255, 255, 0.04);
  }
  .toc-sidebar a.active {
    border-left: none;
    border-bottom-color: var(--cyan);
    background: rgba(23, 230, 200, 0.08);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .section {
    padding: 64px 0;
  }
  .hero-title {
    font-size: 36px;
  }
}
@media (max-width: 767px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .header-actions .btn-entry {
    display: none;
  }
  .brand-text {
    font-size: 19px;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .category-hero {
    padding: 48px 0 40px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .trust-badges {
    gap: 8px;
  }
  .content-block .block-head {
    flex-direction: column;
    gap: 6px;
  }
  .content-block .block-head h2 {
    font-size: 22px;
  }
  .section-head h2,
  .cta-card h2 {
    font-size: 22px;
  }
  .cta-card {
    padding: 44px 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .faq-question {
    padding: 16px 18px;
    font-size: 15px;
  }
  .content-block h3 {
    font-size: 18px;
  }
}
@media (max-width: 520px) {
  .content-table-wrap {
    margin: 14px -8px;
  }
  .content-table th,
  .content-table td {
    padding: 12px 14px;
  }
  .btn-lg {
    width: 100%;
    justify-content: center;
  }
}

/* roulang page: category2 */
:root {
            --bg-primary: #0A1526;
            --bg-deep: #060D18;
            --bg-card: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(148, 210, 255, 0.22);
            --primary: #1E90FF;
            --primary-light: #12B5E8;
            --cyan: #17E6C8;
            --amber: #FFB84D;
            --text-main: #EAF2FF;
            --text-sub: #94A9C7;
            --text-muted: #5A6F8C;
            --success: #00E0A0;
            --error: #FF5C7A;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-input: 12px;
            --radius-tag: 999px;
            --radius-img: 12px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 48px rgba(0, 90, 180, 0.18);
            --glow: 0 0 24px rgba(30, 144, 255, 0.4);
            --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --font-num: "DIN Alternate", "Bebas Neue", "Arial Narrow", sans-serif;
            --header-height: 72px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background-color: var(--bg-primary);
            background-image: linear-gradient(rgba(23, 230, 200, 0.028) 1px, transparent 1px), linear-gradient(90deg, rgba(23, 230, 200, 0.028) 1px, transparent 1px);
            background-size: 56px 56px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            cursor: pointer;
            border: none;
            transition: all 0.2s ease-out;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: var(--glow);
        }
        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 0 32px rgba(30, 144, 255, 0.55);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 16px rgba(30, 144, 255, 0.3);
        }
        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(234, 242, 255, 0.5);
            color: var(--text-main);
            backdrop-filter: blur(12px);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--cyan);
            color: var(--cyan);
        }
        .btn-ghost:active {
            background: rgba(255, 255, 255, 0.14);
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 2px;
        }
        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 13, 24, 0.9);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(148, 210, 255, 0.14);
        }
        .header-top {
            border-bottom: 1px solid rgba(148, 210, 255, 0.08);
        }
        .header-top-grid {
            display: grid;
            grid-template-columns: 220px minmax(280px, 1fr) auto;
            align-items: center;
            gap: 24px;
            min-height: var(--header-height);
        }
        .brand-text {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-main);
            white-space: nowrap;
        }
        .brand-text svg {
            width: 30px;
            height: 30px;
            fill: var(--cyan);
            filter: drop-shadow(0 0 8px rgba(23, 230, 200, 0.5));
        }
        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(148, 210, 255, 0.18);
            border-radius: var(--radius-input);
            padding: 0 8px 0 16px;
            height: 46px;
            transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out;
        }
        .header-search:focus-within {
            border-color: var(--cyan);
            box-shadow: 0 0 0 3px rgba(23, 230, 200, 0.15);
        }
        .header-search .search-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            fill: var(--text-sub);
            margin-right: 10px;
        }
        .header-search input {
            flex: 1;
            min-width: 0;
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 14px;
            height: 100%;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search button {
            flex-shrink: 0;
            height: 34px;
            padding: 0 18px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border: none;
            border-radius: 8px;
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            transition: filter 0.2s ease-out;
        }
        .header-search button:hover {
            filter: brightness(1.18);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-actions .btn {
            min-height: 40px;
            padding: 0 20px;
            font-size: 14px;
        }
        .hamburger {
            display: none;
            width: 42px;
            height: 42px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(148, 210, 255, 0.18);
            border-radius: 10px;
            cursor: pointer;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            transition: background 0.2s ease-out;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: transform 0.2s ease-out, opacity 0.2s ease-out;
        }
        .header-nav {
            border-bottom: 1px solid rgba(148, 210, 255, 0.06);
        }
        .header-nav .container {
            display: flex;
            align-items: center;
            gap: 36px;
            min-height: 48px;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .header-nav .container::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            position: relative;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            white-space: nowrap;
            padding: 12px 2px;
            transition: color 0.2s ease-out;
        }
        .nav-link:hover {
            color: var(--text-main);
        }
        .nav-link.active {
            color: var(--cyan);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 8px;
            height: 2px;
            border-radius: 2px;
            background: var(--cyan);
            box-shadow: 0 0 8px rgba(23, 230, 200, 0.6);
        }
        /* ===== 分类页 Banner ===== */
        .category-banner {
            position: relative;
            padding: 72px 0 64px;
            background: linear-gradient(135deg, rgba(10, 21, 38, 0.92), rgba(6, 13, 24, 0.96)), url(/assets/images/backpic/back-1.webp) center center / cover no-repeat;
            border-bottom: 1px solid rgba(148, 210, 255, 0.12);
            overflow: hidden;
        }
        .category-banner::before {
            content: "";
            position: absolute;
            top: -180px;
            left: -180px;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(30, 144, 255, 0.16), transparent 70%);
            pointer-events: none;
        }
        .category-banner::after {
            content: "";
            position: absolute;
            right: -160px;
            bottom: -160px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(23, 230, 200, 0.12), transparent 70%);
            pointer-events: none;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .category-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .category-banner .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.2s ease-out;
        }
        .category-banner .breadcrumb a:hover {
            color: var(--cyan);
        }
        .category-banner .breadcrumb .sep {
            color: var(--text-muted);
        }
        .category-banner .breadcrumb .current {
            color: var(--text-sub);
        }
        .category-banner h1 {
            font-size: 42px;
            line-height: 1.2;
            font-weight: 700;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            text-shadow: 0 0 30px rgba(30, 144, 255, 0.35);
        }
        .category-banner .banner-desc {
            max-width: 680px;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-sub);
            margin-bottom: 28px;
        }
        .category-banner .banner-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(148, 210, 255, 0.18);
            color: var(--text-sub);
            border-radius: var(--radius-tag);
            padding: 6px 14px;
            font-size: 13px;
        }
        .badge svg {
            width: 14px;
            height: 14px;
            fill: var(--cyan);
        }
        .badge.amber {
            color: var(--amber);
        }
        .badge.amber svg {
            fill: var(--amber);
        }
        /* ===== 分类正文双栏 ===== */
        .category-main {
            position: relative;
            padding: 56px 0 72px;
        }
        .category-layout {
            display: grid;
            grid-template-columns: 240px minmax(0, 1fr);
            gap: 48px;
            align-items: start;
        }
        .toc-sidebar {
            position: sticky;
            top: 140px;
            border-radius: var(--radius-card);
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
            backdrop-filter: blur(18px);
            border: 1px solid var(--glass-border);
            padding: 20px 16px;
        }
        .toc-sidebar .toc-title {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
        }
        .toc-sidebar .toc-title svg {
            width: 16px;
            height: 16px;
            fill: var(--cyan);
        }
        .toc-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .toc-list a {
            display: block;
            padding: 8px 12px;
            font-size: 14px;
            color: var(--text-sub);
            border-radius: 8px;
            border-left: 2px solid transparent;
            transition: all 0.2s ease-out;
        }
        .toc-list a:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.05);
        }
        .toc-list a.active {
            color: var(--cyan);
            background: rgba(23, 230, 200, 0.06);
            border-left-color: var(--cyan);
        }
        /* ===== 正文区域 ===== */
        .category-content {
            min-width: 0;
        }
        .content-section {
            margin-bottom: 56px;
            scroll-margin-top: 140px;
        }
        .content-section:last-child {
            margin-bottom: 0;
        }
        .content-section h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 6px;
            color: var(--text-main);
        }
        .content-section .section-lead {
            font-size: 15px;
            color: var(--text-sub);
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .content-section h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-main);
            margin: 28px 0 12px;
            padding-left: 14px;
            border-left: 3px solid var(--cyan);
        }
        .content-section p {
            font-size: 15px;
            color: var(--text-sub);
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 28px;
        }
        .feature-card {
            position: relative;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
            backdrop-filter: blur(18px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
        }
        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 16px;
            right: 16px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(23, 230, 200, 0.6), transparent);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(30, 144, 255, 0.14);
            border: 1px solid rgba(30, 144, 255, 0.28);
            margin-bottom: 16px;
        }
        .feature-card .feature-icon svg {
            width: 22px;
            height: 22px;
            fill: var(--primary);
        }
        .feature-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .section-img {
            border-radius: var(--radius-img);
            overflow: hidden;
            margin: 20px 0 24px;
            aspect-ratio: 16 / 9;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--glass-border);
        }
        .section-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease-out;
        }
        .section-img:hover img {
            transform: scale(1.02);
        }
        .point-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin: 16px 0 24px;
        }
        .point-list li {
            position: relative;
            padding-left: 22px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
        }
        .point-list li::before {
            content: "";
            position: absolute;
            left: 4px;
            top: 10px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--cyan);
            box-shadow: 0 0 6px rgba(23, 230, 200, 0.5);
        }
        /* ===== 表格 ===== */
        .table-wrap {
            border-radius: var(--radius-card);
            border: 1px solid var(--glass-border);
            overflow: hidden;
            margin: 20px 0 24px;
            background: rgba(255, 255, 255, 0.03);
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }
        .table-wrap th {
            background: rgba(30, 144, 255, 0.12);
            color: var(--text-main);
            font-weight: 600;
            text-align: left;
            padding: 14px 16px;
            border-bottom: 1px solid rgba(148, 210, 255, 0.16);
            white-space: nowrap;
        }
        .table-wrap td {
            padding: 14px 16px;
            color: var(--text-sub);
            border-bottom: 1px solid rgba(148, 210, 255, 0.08);
            line-height: 1.6;
        }
        .table-wrap tr:last-child td {
            border-bottom: none;
        }
        .table-wrap tr:hover td {
            background: rgba(255, 255, 255, 0.03);
        }
        .status-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 600;
            background: rgba(0, 224, 160, 0.12);
            color: var(--success);
            border: 1px solid rgba(0, 224, 160, 0.25);
        }
        .status-tag.pending {
            background: rgba(255, 184, 77, 0.12);
            color: var(--amber);
            border-color: rgba(255, 184, 77, 0.25);
        }
        .status-tag.draft {
            background: rgba(148, 169, 199, 0.1);
            color: var(--text-sub);
            border-color: rgba(148, 169, 199, 0.2);
        }
        /* ===== 参与流程 ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin: 20px 0 24px;
        }
        .process-step {
            position: relative;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 22px 16px 18px;
            text-align: center;
            transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            font-family: var(--font-num);
            margin-bottom: 12px;
            box-shadow: 0 0 16px rgba(30, 144, 255, 0.35);
        }
        .process-step h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.65;
            margin-bottom: 0;
        }
        /* ===== 赛事回顾卡片 ===== */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin: 20px 0 8px;
        }
        .review-card {
            border-radius: var(--radius-card);
            overflow: hidden;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
        }
        .review-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .review-card .review-img {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            position: relative;
        }
        .review-card .review-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease-out;
        }
        .review-card:hover .review-img img {
            transform: scale(1.04);
        }
        .review-card .review-img::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 50%;
            background: linear-gradient(transparent, rgba(6, 13, 24, 0.6));
        }
        .review-card .review-body {
            padding: 16px 18px 18px;
        }
        .review-card .review-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .review-card .review-body p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.65;
            margin-bottom: 0;
        }
        .link-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--cyan);
            margin-top: 16px;
            transition: gap 0.2s ease-out;
        }
        .link-more:hover {
            gap: 10px;
            color: var(--text-main);
        }
        .link-more svg {
            width: 14px;
            height: 14px;
            fill: currentColor;
        }
        /* ===== FAQ ===== */
        .faq-section {
            background: rgba(6, 13, 24, 0.4);
            border-top: 1px solid rgba(148, 210, 255, 0.1);
            border-bottom: 1px solid rgba(148, 210, 255, 0.1);
            padding: 64px 0;
        }
        .faq-section .section-head {
            text-align: center;
            margin-bottom: 36px;
        }
        .faq-section .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .faq-section .section-head p {
            font-size: 15px;
            color: var(--text-sub);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color 0.2s ease-out;
        }
        .faq-item.open {
            border-color: rgba(23, 230, 200, 0.35);
        }
        .faq-item .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: transparent;
            border: none;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            text-align: left;
            transition: background 0.2s ease-out;
        }
        .faq-item .faq-q:hover {
            background: rgba(255, 255, 255, 0.04);
        }
        .faq-item .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(30, 144, 255, 0.12);
            border: 1px solid rgba(30, 144, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.2s ease-out, background 0.2s ease-out;
        }
        .faq-item .faq-icon::before {
            content: "+";
            font-size: 18px;
            line-height: 1;
            color: var(--primary);
            font-weight: 600;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(23, 230, 200, 0.15);
            border-color: rgba(23, 230, 200, 0.4);
        }
        .faq-item.open .faq-icon::before {
            color: var(--cyan);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
        }
        .faq-item .faq-a-inner {
            padding: 0 22px 18px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-sub);
            border-top: 1px solid rgba(148, 210, 255, 0.08);
            margin: 0 22px 0 22px;
            padding: 16px 0;
        }
        /* ===== CTA ===== */
        .cta-section {
            padding: 64px 0;
            text-align: center;
        }
        .cta-box {
            max-width: 860px;
            margin: 0 auto;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
            backdrop-filter: blur(18px);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            padding: 48px 32px;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: "";
            position: absolute;
            top: -100px;
            right: -100px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(23, 230, 200, 0.12), transparent 70%);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 15px;
            color: var(--text-sub);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-privacy {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 14px;
        }
        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(148, 210, 255, 0.12);
            padding-top: 56px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .brand-text {
            font-size: 22px;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 260px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: var(--text-sub);
            padding: 5px 0;
            transition: color 0.2s ease-out;
        }
        .footer-col a:hover {
            color: var(--cyan);
        }
        .footer-col p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.8;
        }
        .footer-bottom {
            border-top: 1px solid rgba(148, 210, 255, 0.1);
            padding: 18px 0;
        }
        .footer-bottom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom p {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        /* ===== 浮动咨询 ===== */
        .float-contact {
            position: fixed;
            right: 28px;
            bottom: 28px;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            box-shadow: var(--glow);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: none;
            transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
        }
        .float-contact:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 36px rgba(30, 144, 255, 0.6);
        }
        .float-contact svg {
            width: 24px;
            height: 24px;
            fill: #fff;
        }
        .float-contact::after {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: 50%;
            border: 2px solid rgba(23, 230, 200, 0.7);
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% {
                transform: scale(1);
                opacity: 0.6;
            }
            70% {
                transform: scale(1.35);
                opacity: 0;
            }
            100% {
                opacity: 0;
            }
        }
        /* ===== 模态框 ===== */
        .modal-mask {
            position: fixed;
            inset: 0;
            z-index: 200;
            background: rgba(4, 10, 20, 0.72);
            backdrop-filter: blur(8px);
            display: none;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        .modal-mask.show {
            display: flex;
        }
        .modal-box {
            width: 100%;
            max-width: 500px;
            background: linear-gradient(135deg, #0D1B30, #0A1526);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            padding: 32px;
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
            position: relative;
            max-height: 90vh;
            overflow-y: auto;
        }
        .modal-box .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(148, 210, 255, 0.18);
            color: var(--text-sub);
            font-size: 18px;
            line-height: 1;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease-out;
        }
        .modal-box .modal-close:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--text-main);
        }
        .modal-box h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .modal-box .modal-desc {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 24px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            min-height: 44px;
            background: rgba(10, 21, 38, 0.9);
            border: 1px solid rgba(148, 210, 255, 0.22);
            border-radius: var(--radius-input);
            padding: 10px 14px;
            font-size: 14px;
            color: var(--text-main);
            transition: border-color 0.2s ease-out, box-shadow 0.2s ease-out;
        }
        .form-group textarea {
            min-height: 90px;
            resize: vertical;
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--cyan);
            box-shadow: 0 0 0 3px rgba(23, 230, 200, 0.12);
        }
        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394A9C7' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
        }
        .modal-box .btn {
            width: 100%;
            margin-top: 8px;
        }
        .modal-privacy {
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
            margin-top: 12px;
            line-height: 1.6;
        }
        .modal-privacy a {
            color: var(--text-sub);
            text-decoration: underline;
        }
        /* ===== 滚动入场 ===== */
        .reveal {
            opacity: 0;
            transform: translateY(12px);
            transition: opacity 0.5s ease-out, transform 0.5s ease-out;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .header-top-grid {
                grid-template-columns: auto minmax(200px, 1fr) auto;
                gap: 14px;
            }
            .brand-text {
                font-size: 20px;
            }
            .brand-text svg {
                width: 26px;
                height: 26px;
            }
            .header-nav .container {
                gap: 24px;
            }
            .category-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .toc-sidebar {
                position: static;
                display: flex;
                align-items: center;
                gap: 12px;
                overflow-x: auto;
                padding: 12px 16px;
                scrollbar-width: none;
            }
            .toc-sidebar .toc-title {
                margin-bottom: 0;
                flex-shrink: 0;
            }
            .toc-list {
                flex-direction: row;
                gap: 4px;
            }
            .toc-list a {
                white-space: nowrap;
                border-left: none;
                border-bottom: 2px solid transparent;
                padding: 6px 12px;
            }
            .toc-list a.active {
                border-left: none;
                border-bottom-color: var(--cyan);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .header-top-grid {
                grid-template-columns: auto 1fr auto;
                gap: 10px;
            }
            .header-search {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-actions .btn {
                display: none;
            }
            .header-nav {
                display: none;
            }
            .header-nav.open {
                display: block;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(6, 13, 24, 0.98);
                border-bottom: 1px solid rgba(148, 210, 255, 0.14);
                padding: 16px 0;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
            }
            .header-nav.open .container {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
            .header-nav.open .nav-link {
                display: block;
                width: 100%;
                padding: 12px 0;
                font-size: 16px;
                border-bottom: 1px solid rgba(148, 210, 255, 0.06);
            }
            .header-nav.open .nav-link.active::after {
                display: none;
            }
            .header-nav.open .nav-link.active {
                color: var(--cyan);
                padding-left: 12px;
                border-left: 2px solid var(--cyan);
            }
            .header-mobile-search {
                display: flex;
                align-items: center;
                background: rgba(255, 255, 255, 0.06);
                border: 1px solid rgba(148, 210, 255, 0.18);
                border-radius: var(--radius-input);
                padding: 0 8px 0 14px;
                height: 44px;
                margin-bottom: 12px;
                width: 100%;
            }
            .header-mobile-search input {
                flex: 1;
                min-width: 0;
                background: transparent;
                border: none;
                color: var(--text-main);
                font-size: 14px;
                height: 100%;
            }
            .header-mobile-search button {
                height: 32px;
                padding: 0 14px;
                background: var(--primary);
                border: none;
                border-radius: 8px;
                color: #fff;
                font-size: 13px;
                cursor: pointer;
            }
            .category-banner {
                padding: 48px 0 40px;
            }
            .category-banner h1 {
                font-size: 30px;
            }
            .category-banner .banner-desc {
                font-size: 15px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .review-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .table-wrap {
                overflow-x: auto;
            }
            .table-wrap table {
                min-width: 560px;
            }
            .faq-item .faq-q {
                font-size: 15px;
                padding: 16px;
            }
            .cta-box {
                padding: 36px 20px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 28px;
            }
            .float-contact {
                right: 16px;
                bottom: 16px;
                width: 48px;
                height: 48px;
            }
            .modal-box {
                padding: 24px 20px;
            }
        }
        @media (max-width: 520px) {
            .header-top-grid {
                grid-template-columns: 1fr auto;
            }
            .brand-text {
                font-size: 18px;
            }
            .category-banner .banner-badges {
                gap: 6px;
            }
            .badge {
                font-size: 12px;
                padding: 4px 10px;
            }
            .content-section h2 {
                font-size: 22px;
            }
            .footer-bottom .container {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category3 */
:root {
    --bg-primary: #0A1526;
    --bg-card: rgba(255,255,255,0.06);
    --bg-deep: #060D18;
    --border-glass: rgba(148,210,255,0.22);
    --border-line: rgba(150,190,255,0.12);
    --blue: #1E90FF;
    --cyan: #17E6C8;
    --amber: #FFB84D;
    --text-main: #EAF2FF;
    --text-secondary: #94A9C7;
    --text-muted: #5A6F8C;
    --success: #00E0A0;
    --error: #FF5C7A;
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-input: 12px;
    --shadow: 0 8px 32px rgba(0,0,0,0.35);
    --shadow-hover: 0 12px 48px rgba(0,90,180,0.18);
    --shadow-glow: 0 0 24px rgba(30,144,255,0.4);
    --spacer: 96px;
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

button, input {
    font: inherit;
    border: none;
    outline: none;
    background: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

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

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

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-btn);
    font-weight: 600;
    font-size: 15px;
    min-height: 44px;
    padding: 0 24px;
    cursor: pointer;
    transition: all 0.2s ease-out;
    white-space: nowrap;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, #1E90FF, #12B5E8);
    color: #fff;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 0 36px rgba(30,144,255,0.55);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(2px);
}

.btn-header {
    font-size: 14px;
    min-height: 40px;
    padding: 0 18px;
}

/* ========== Header ========== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(7,15,28,0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border-line);
}

.header-top {
    display: grid;
    grid-template-columns: auto minmax(260px, 1fr) auto;
    align-items: center;
    gap: 24px;
    padding: 14px 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-main);
    white-space: nowrap;
    line-height: 1.2;
}

.brand svg {
    width: 24px;
    height: 24px;
    fill: var(--blue);
    flex-shrink: 0;
}

.header-search {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-input);
    padding: 4px;
    max-width: 520px;
    justify-self: center;
    width: 100%;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.header-search:focus-within {
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px rgba(23,230,200,0.12);
}

.search-icon {
    width: 18px;
    height: 18px;
    stroke: var(--text-muted);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    margin: 0 10px;
    flex-shrink: 0;
}

.header-search input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 14px;
    padding: 8px 0;
    min-width: 0;
}

.header-search input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    background: linear-gradient(135deg, #1E90FF, #12B5E8);
    color: #fff;
    border-radius: 8px;
    padding: 8px 18px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.2s, box-shadow 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
}

.search-btn:hover {
    filter: brightness(1.1);
    box-shadow: 0 0 16px rgba(30,144,255,0.4);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    cursor: pointer;
    border-radius: 8px;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
}

.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);
}

.header-nav {
    border-top: 1px solid rgba(150,190,255,0.08);
}

.nav-scroll {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.nav-scroll::-webkit-scrollbar {
    display: none;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 12px 18px;
    font-size: 15px;
    color: var(--text-secondary);
    position: relative;
    transition: color 0.2s, background 0.2s;
    white-space: nowrap;
    border-radius: 8px 8px 0 0;
}

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

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

.nav-link.active::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 0;
    height: 2px;
    background: var(--cyan);
    border-radius: 2px 2px 0 0;
    box-shadow: 0 0 12px rgba(23,230,200,0.5);
}

/* ========== 分类页 Hero ========== */
.page-hero {
    position: relative;
    padding: 88px 0 72px;
    overflow: hidden;
}

.page-hero .hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(148,210,255,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148,210,255,0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.page-hero .hero-glow-left {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(30,144,255,0.15), transparent 70%);
    top: -220px;
    left: -160px;
    pointer-events: none;
}

.page-hero .hero-glow-right {
    position: absolute;
    width: 520px;
    height: 520px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(23,230,200,0.10), transparent 70%);
    bottom: -220px;
    right: -120px;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(23,230,200,0.10);
    border: 1px solid rgba(23,230,200,0.30);
    color: var(--cyan);
    font-size: 13px;
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 20px;
    letter-spacing: 0.04em;
}

.page-hero h1 {
    font-size: 44px;
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: 16px;
    text-shadow: 0 0 30px rgba(30,144,255,0.35);
    letter-spacing: 0.01em;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 660px;
    line-height: 1.8;
}

/* ========== 双栏内容区 ========== */
.content-section {
    padding: 72px 0 96px;
}

.content-layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
}

.toc-sidebar {
    position: sticky;
    top: 160px;
}

.toc-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-card);
    padding: 20px;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.toc-card h3 {
    font-size: 13px;
    color: var(--text-muted);
    letter-spacing: 0.08em;
    margin-bottom: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.toc-link {
    display: block;
    padding: 9px 12px;
    font-size: 14px;
    color: var(--text-secondary);
    border-radius: 8px;
    border-left: 2px solid transparent;
    transition: all 0.2s ease-out;
    line-height: 1.4;
}

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

.toc-link.active {
    color: var(--cyan);
    border-left-color: var(--cyan);
    background: rgba(23,230,200,0.08);
}

.main-content {
    min-width: 0;
}

.content-block {
    margin-bottom: 64px;
    scroll-margin-top: 160px;
}

.content-block h2 {
    font-size: 30px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
    padding-left: 16px;
    border-left: 3px solid var(--cyan);
    letter-spacing: 0.01em;
}

.content-block p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 20px;
    max-width: 680px;
}

/* 要点列表 */
.check-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 12px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.check-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 7px;
    height: 7px;
    background: var(--cyan);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(23,230,200,0.5);
}

/* 条目卡片列表 */
.item-list li {
    position: relative;
    padding: 16px 18px 16px 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-line);
    border-radius: 12px;
    margin-bottom: 10px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.item-list li:hover {
    background: rgba(255,255,255,0.08);
    border-color: var(--border-glass);
    transform: translateX(4px);
}

.item-list li::before {
    content: "";
    position: absolute;
    left: 20px;
    top: 22px;
    width: 8px;
    height: 8px;
    background: var(--blue);
    border-radius: 2px;
    box-shadow: 0 0 8px rgba(30,144,255,0.4);
}

.item-list strong {
    color: var(--text-main);
    font-weight: 600;
}

/* 流程列表 */
.process-list {
    counter-reset: step;
    margin-bottom: 24px;
}

.process-list li {
    counter-increment: step;
    position: relative;
    padding: 18px 20px 18px 60px;
    background: var(--bg-card);
    border: 1px solid var(--border-line);
    border-radius: 12px;
    margin-bottom: 12px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-secondary);
    transition: background 0.2s, border-color 0.2s;
}

.process-list li:hover {
    background: rgba(255,255,255,0.08);
    border-color: var(--border-glass);
}

.process-list li::before {
    content: counter(step);
    position: absolute;
    left: 18px;
    top: 18px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1E90FF, #12B5E8);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 12px rgba(30,144,255,0.4);
    line-height: 1;
}

.process-list strong {
    color: var(--text-main);
    font-weight: 600;
}

/* 配图 */
.content-figure {
    margin: 32px 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-line);
    box-shadow: var(--shadow);
    background: var(--bg-card);
}

.content-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ratio-16x9 {
    aspect-ratio: 16 / 9;
}

.ratio-4x3 {
    aspect-ratio: 4 / 3;
}

/* ========== CTA 区 ========== */
.cta-section {
    padding: 24px 0 96px;
}

.cta-card {
    background: linear-gradient(135deg, rgba(30,144,255,0.12), rgba(23,230,200,0.05));
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 56px 40px;
    text-align: center;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    position: relative;
    overflow: hidden;
}

.cta-card h2 {
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: 0.01em;
}

.cta-card > p {
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 28px;
    font-size: 16px;
    line-height: 1.8;
}

.btn-glow {
    background: linear-gradient(135deg, #1E90FF, #12B5E8);
    color: #fff;
    font-size: 16px;
    min-height: 48px;
    padding: 0 36px;
    border-radius: 10px;
    box-shadow: var(--shadow-glow);
    transition: all 0.2s ease-out;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.btn-glow:hover {
    filter: brightness(1.1);
    box-shadow: 0 0 36px rgba(30,144,255,0.55);
    transform: translateY(-2px);
}

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

.btn-glow svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.privacy-note {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 20px;
}

/* ========== 页脚 ========== */
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--border-line);
    padding-top: 56px;
}

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

.footer-brand .brand-text {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-main);
}

.brand-text svg {
    width: 22px;
    height: 22px;
    fill: var(--blue);
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 12px;
    line-height: 1.7;
    max-width: 280px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}

.footer-col a {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    padding: 5px 0;
    transition: color 0.2s;
}

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

.footer-col p {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 3px 0;
}

.footer-bottom {
    border-top: 1px solid rgba(150,190,255,0.08);
    padding: 16px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 12px;
    color: var(--text-muted);
}

/* ========== 动画 ========== */
.content-block, .cta-card, .page-hero {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.content-block.appeared, .cta-card.appeared, .page-hero.appeared {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
    html {
        scroll-behavior: auto;
    }
    .content-block, .cta-card, .page-hero {
        opacity: 1;
        transform: none;
    }
}

/* ========== 响应式 ========== */
@media (max-width: 992px) {
    .content-layout {
        grid-template-columns: 1fr;
    }
    .toc-sidebar {
        position: static;
    }
    .toc-card {
        display: flex;
        gap: 6px;
        overflow-x: auto;
        padding: 10px 12px;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    .toc-card h3 {
        display: none;
    }
    .toc-link {
        border-left: none;
        border-bottom: 2px solid transparent;
        white-space: nowrap;
        padding: 6px 14px;
        border-radius: 6px;
        flex-shrink: 0;
    }
    .toc-link.active {
        border-left-color: transparent;
        border-bottom-color: var(--cyan);
        background: rgba(23,230,200,0.08);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 768px) and (max-width: 992px) {
    .header-top {
        grid-template-columns: 1fr auto;
        gap: 10px;
    }
    .brand {
        grid-row: 1;
        grid-column: 1;
    }
    .header-search {
        grid-column: 1 / -1;
        grid-row: 2;
        max-width: none;
    }
    .btn-header {
        display: none;
    }
    .hamburger {
        display: none;
    }
    .header-nav {
        display: block;
    }
}

@media (max-width: 767px) {
    .page-hero {
        padding: 56px 0 48px;
    }
    .page-hero h1 {
        font-size: 30px;
    }
    .hero-subtitle {
        font-size: 16px;
    }
    .content-section {
        padding: 48px 0 64px;
    }
    .content-block h2 {
        font-size: 22px;
    }
    .content-block {
        margin-bottom: 48px;
    }
    .cta-section {
        padding-bottom: 64px;
    }
    .cta-card {
        padding: 40px 24px;
    }
    .cta-card h2 {
        font-size: 22px;
    }

    .header-top {
        grid-template-columns: 1fr auto;
        gap: 10px;
        padding: 10px 0;
    }
    .brand {
        font-size: 19px;
        grid-row: 1;
        grid-column: 1;
    }
    .header-search {
        grid-column: 1 / -1;
        grid-row: 2;
        max-width: none;
    }
    .btn-header {
        display: none;
    }
    .hamburger {
        display: flex;
        grid-row: 1;
        grid-column: 2;
    }
    .header-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #0A1526;
        border-bottom: 1px solid var(--border-line);
        padding: 12px 0;
        box-shadow: 0 16px 32px rgba(0,0,0,0.4);
    }
    .header-nav.nav-open {
        display: block;
    }
    .nav-scroll {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        overflow-x: visible;
    }
    .nav-link {
        padding: 14px 20px;
        border-radius: 8px;
        justify-content: flex-start;
    }
    .nav-link.active::after {
        left: 20px;
        right: auto;
        top: 12px;
        bottom: 12px;
        width: 2px;
        height: auto;
        border-radius: 2px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

/* roulang page: category4 */
:root {
  --bg-primary: #0A1526;
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-deep: #060D18;
  --glass-border: rgba(148, 210, 255, 0.22);
  --accent-blue: #1E90FF;
  --accent-cyan: #17E6C8;
  --accent-amber: #FFB84D;
  --text-primary: #EAF2FF;
  --text-secondary: #94A9C7;
  --text-disabled: #5A6F8C;
  --success: #00E0A0;
  --danger: #FF5C7A;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 12px;
  --shadow-normal: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 48px rgba(0, 90, 180, 0.18);
  --transition: 200ms ease-out;
  --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-digit: "DIN Alternate", "Bebas Neue", "Arial Narrow", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  background-image:
    linear-gradient(rgba(10, 21, 38, 0.92), rgba(10, 21, 38, 0.98)),
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(148, 210, 255, 0.04) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(148, 210, 255, 0.04) 40px);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #1E90FF, #12B5E8);
  color: #fff;
  box-shadow: 0 0 24px rgba(30, 144, 255, 0.4);
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 32px rgba(30, 144, 255, 0.55);
  color: #fff;
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(2px);
  box-shadow: 0 0 16px rgba(30, 144, 255, 0.3);
}

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

.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--text-primary);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.85);
}

.btn-ghost:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 13, 24, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(150, 190, 255, 0.12);
}

.header-top {
  border-bottom: 1px solid rgba(150, 190, 255, 0.08);
}

.header-top-grid {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.brand-text {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.brand-text svg {
  width: 26px;
  height: 26px;
  fill: var(--accent-blue);
  filter: drop-shadow(0 0 8px rgba(30, 144, 255, 0.6));
}

.brand-text:hover {
  color: var(--text-primary);
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(160, 210, 255, 0.18);
  border-radius: var(--radius-input);
  padding: 0 8px 0 14px;
  max-width: 520px;
  width: 100%;
  justify-self: center;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box:focus-within {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(23, 230, 200, 0.15);
}

.search-box svg {
  width: 18px;
  height: 18px;
  fill: var(--text-disabled);
  flex-shrink: 0;
}

.search-box input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  height: 44px;
  font-size: 14px;
  min-width: 0;
}

.search-box input::placeholder {
  color: var(--text-disabled);
}

.search-box button {
  background: linear-gradient(135deg, #1E90FF, #12B5E8);
  border: none;
  color: #fff;
  border-radius: 8px;
  height: 34px;
  padding: 0 18px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: filter var(--transition);
  white-space: nowrap;
}

.search-box button:hover {
  filter: brightness(1.1);
}

.header-entry-btn {
  min-height: 40px;
  padding: 8px 20px;
  font-size: 14px;
}

.mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(160, 210, 255, 0.18);
  color: var(--text-primary);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 20px;
}

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

.header-nav {
  background: transparent;
}

.header-nav .container {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.header-nav .container::-webkit-scrollbar {
  display: none;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-secondary);
  white-space: nowrap;
  font-weight: 500;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 6px;
  height: 2px;
  background: var(--accent-cyan);
  border-radius: 999px;
  opacity: 0;
  transform: scaleX(0.5);
  transition: all var(--transition);
}

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

.nav-link:hover::after {
  opacity: 0.5;
  transform: scaleX(0.8);
}

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

.nav-link.active::after {
  opacity: 1;
  transform: scaleX(1);
}

/* Mobile drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  height: 100vh;
  background: var(--bg-deep);
  border-left: 1px solid var(--glass-border);
  z-index: 200;
  padding: 24px;
  transition: right 300ms ease-out;
  overflow-y: auto;
}

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

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.drawer-close {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(160, 210, 255, 0.18);
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
}

.drawer-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(160, 210, 255, 0.18);
  border-radius: var(--radius-input);
  padding: 0 12px;
  margin-bottom: 24px;
}

.drawer-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  height: 44px;
  font-size: 14px;
}

.drawer-search input::placeholder {
  color: var(--text-disabled);
}

.drawer-link {
  display: block;
  padding: 14px 12px;
  color: var(--text-secondary);
  font-size: 16px;
  border-radius: 10px;
  transition: all var(--transition);
}

.drawer-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
  padding-left: 16px;
}

.drawer-link.active {
  color: var(--accent-cyan);
  background: rgba(23, 230, 200, 0.08);
}

.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 190;
  backdrop-filter: blur(4px);
}

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

/* Hero */
.page-hero {
  position: relative;
  padding: 80px 0 64px;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(30, 144, 255, 0.12), transparent 70%);
  top: -200px;
  left: -180px;
  pointer-events: none;
}

.page-hero::after {
  content: "";
  position: absolute;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(23, 230, 200, 0.08), transparent 70%);
  bottom: -160px;
  right: -120px;
  pointer-events: none;
}

.breadcrumb {
  font-size: 13px;
  color: var(--text-disabled);
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

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

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

.breadcrumb .sep {
  margin: 0 8px;
  color: var(--text-disabled);
}

.page-hero h1 {
  position: relative;
  z-index: 1;
  font-size: 44px;
  line-height: 1.2;
  font-weight: 700;
  max-width: 840px;
  margin-bottom: 20px;
  text-shadow: 0 0 30px rgba(30, 144, 255, 0.35);
}

.page-hero h1 .hero-divider {
  color: var(--accent-cyan);
  margin: 0 8px;
}

.page-hero h1 .hero-sub-text {
  color: var(--text-primary);
}

.page-hero .hero-sub {
  position: relative;
  z-index: 1;
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.8;
}

/* Content Layout */
.content-section {
  padding: 64px 0 80px;
  position: relative;
}

.content-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  align-items: start;
}

.toc-side {
  position: sticky;
  top: 140px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.03));
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(160, 210, 255, 0.18);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-normal);
}

.toc-side h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(150, 190, 255, 0.12);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.toc-side ul {
  list-style: none;
}

.toc-side li {
  margin-bottom: 4px;
}

.toc-side a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--text-secondary);
  border-radius: 8px;
  border-left: 2px solid transparent;
  transition: all var(--transition);
  line-height: 1.5;
}

.toc-side a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  border-left-color: var(--accent-cyan);
}

.toc-side a.active {
  color: var(--accent-cyan);
  background: rgba(23, 230, 200, 0.08);
  border-left-color: var(--accent-cyan);
  font-weight: 600;
}

.content-main {
  min-width: 0;
}

.content-block {
  margin-bottom: 48px;
  scroll-margin-top: 160px;
}

.content-block h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-left: 16px;
  border-left: 4px solid var(--accent-cyan);
  line-height: 1.4;
}

.content-block .block-intro {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.8;
}

.content-block ul {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}

.content-block li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-primary);
}

.content-block li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px rgba(23, 230, 200, 0.4);
}

.content-block .block-image {
  border-radius: 12px;
  overflow: hidden;
  margin-top: 20px;
  margin-bottom: 8px;
  position: relative;
  border: 1px solid rgba(160, 210, 255, 0.18);
  box-shadow: var(--shadow-normal);
}

.content-block .block-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.content-block .block-image.ratio-4-3 img {
  aspect-ratio: 4 / 3;
}

.content-block .img-caption {
  font-size: 12px;
  color: var(--text-disabled);
  text-align: center;
  margin-top: 8px;
  line-height: 1.5;
}

.help-table-wrap {
  border-radius: var(--radius-card);
  border: 1px solid rgba(160, 210, 255, 0.18);
  overflow: hidden;
  margin: 20px 0;
  box-shadow: var(--shadow-normal);
}

.help-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.help-table th,
.help-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid rgba(150, 190, 255, 0.10);
}

.help-table th {
  background: rgba(30, 144, 255, 0.10);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.help-table td {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
}

.help-table tr:last-child th,
.help-table tr:last-child td {
  border-bottom: none;
}

.help-table td:first-child {
  color: var(--text-primary);
  font-weight: 500;
}

/* FAQ */
.faq-section {
  padding: 80px 0;
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid rgba(150, 190, 255, 0.08);
  border-bottom: 1px solid rgba(150, 190, 255, 0.08);
}

.faq-section .section-head {
  text-align: center;
  margin-bottom: 48px;
}

.faq-section .section-head h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
}

.faq-section .section-head p {
  color: var(--text-secondary);
  font-size: 15px;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.03));
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(160, 210, 255, 0.18);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: rgba(160, 210, 255, 0.35);
  box-shadow: var(--shadow-hover);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  user-select: none;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font-family: var(--font-main);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(30, 144, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
  font-size: 18px;
  flex-shrink: 0;
  transition: transform 300ms ease-out;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: rgba(23, 230, 200, 0.15);
  color: var(--accent-cyan);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 400ms ease-out;
}

.faq-answer-inner {
  padding: 0 20px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  border-top: 1px solid transparent;
}

.faq-item.open .faq-answer-inner {
  border-top-color: rgba(150, 190, 255, 0.12);
  padding-top: 16px;
}

/* CTA */
.cta-section {
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(30, 144, 255, 0.10), transparent 70%);
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}

.cta-section h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
}

.cta-section p.cta-desc {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 32px;
  position: relative;
  line-height: 1.8;
}

.cta-section .btn {
  position: relative;
  font-size: 16px;
  padding: 14px 36px;
}

.cta-section .privacy-note {
  font-size: 12px;
  color: var(--text-disabled);
  margin-top: 16px;
  position: relative;
}

/* Floating widget */
.float-widget {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 180;
}

.float-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1E90FF, #12B5E8);
  border: none;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  box-shadow: 0 0 24px rgba(30, 144, 255, 0.5);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.float-btn::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(23, 230, 200, 0.6);
  animation: pulse 2s ease-out infinite;
}

.float-btn:hover {
  filter: brightness(1.1);
  transform: scale(1.05);
}

@keyframes pulse {
  0% {
    transform: scale(0.9);
    opacity: 1;
  }
  70% {
    transform: scale(1.4);
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  z-index: 300;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: linear-gradient(135deg, #0D1B30, #0A1526);
  border: 1px solid rgba(160, 210, 255, 0.22);
  border-radius: 20px;
  width: 500px;
  max-width: 100%;
  padding: 32px;
  position: relative;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
  animation: modalIn 300ms ease-out;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.modal-header h3 {
  font-size: 20px;
  font-weight: 700;
}

.modal-close {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(160, 210, 255, 0.18);
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.modal-close:hover {
  background: rgba(255, 92, 122, 0.15);
  color: var(--danger);
  border-color: rgba(255, 92, 122, 0.3);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(6, 13, 24, 0.8);
  border: 1px solid rgba(160, 210, 255, 0.22);
  border-radius: var(--radius-input);
  padding: 12px 14px;
  font-size: 14px;
  color: var(--text-primary);
  font-family: var(--font-main);
  transition: all var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(23, 230, 200, 0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 90px;
}

.form-submit {
  width: 100%;
}

.form-privacy {
  font-size: 12px;
  color: var(--text-disabled);
  text-align: center;
  margin-top: 12px;
}

.form-privacy a {
  color: var(--text-secondary);
  text-decoration: underline;
}

.form-privacy a:hover {
  color: var(--accent-cyan);
}

/* Footer */
.site-footer {
  background: rgba(6, 13, 24, 0.95);
  border-top: 1px solid rgba(150, 190, 255, 0.12);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .brand-text {
  font-size: 22px;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-top: 12px;
  max-width: 260px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-col a,
.footer-col p {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 10px;
  line-height: 1.6;
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(150, 190, 255, 0.08);
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 12px;
  color: var(--text-disabled);
}

/* Responsive */
@media (max-width: 992px) {
  .content-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .toc-side {
    position: static;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .toc-side::-webkit-scrollbar {
    display: none;
  }

  .toc-side h4 {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .toc-side ul {
    display: flex;
    gap: 4px;
    flex-wrap: nowrap;
  }

  .toc-side li {
    margin-bottom: 0;
  }

  .toc-side a {
    white-space: nowrap;
    border-left: none;
    border-bottom: 2px solid transparent;
    border-radius: 8px;
  }

  .toc-side a.active {
    border-left: none;
    border-bottom-color: var(--accent-cyan);
  }

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

@media (max-width: 768px) {
  .header-top-grid {
    grid-template-columns: auto 1fr auto;
    gap: 12px;
  }

  .search-box {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .header-entry-btn {
    display: none;
  }

  .header-nav {
    display: none;
  }

  .page-hero {
    padding: 48px 0 40px;
  }

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

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

  .content-section {
    padding: 40px 0 56px;
  }

  .content-block h3 {
    font-size: 20px;
    padding-left: 12px;
  }

  .faq-section {
    padding: 56px 0;
  }

  .faq-section .section-head h2 {
    font-size: 22px;
  }

  .cta-section {
    padding: 56px 0;
  }

  .cta-section h2 {
    font-size: 22px;
  }
}

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

  .header-top-grid {
    grid-template-columns: auto 1fr;
  }

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

  .brand-text svg {
    width: 22px;
    height: 22px;
  }

  .page-hero h1 {
    font-size: 26px;
    line-height: 1.3;
  }

  .page-hero .hero-sub {
    font-size: 14px;
    line-height: 1.7;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 32px;
  }

  .float-widget {
    right: 16px;
    bottom: 16px;
  }

  .modal {
    padding: 24px;
  }

  .content-block li {
    font-size: 14px;
  }

  .help-table {
    font-size: 13px;
  }

  .help-table th,
  .help-table td {
    padding: 10px 12px;
  }
}

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