/* roulang page: index */
:root {
            --bg-primary: #0b0b14;
            --bg-card: #12121f;
            --bg-panel: #181828;
            --bg-hover: #1a1a2e;
            --accent-cyan: #00e5ff;
            --accent-pink: #ff3d81;
            --accent-purple: #8a5cff;
            --success: #3ae0a1;
            --text-primary: #e7e7f2;
            --text-muted: #9a9ab0;
            --border-color: rgba(255, 255, 255, 0.08);
            --gradient-cyan-purple: linear-gradient(90deg, #00e5ff, #8a5cff);
            --gradient-pink-purple: linear-gradient(135deg, #ff3d81, #8a5cff);
            --radius-lg: 14px;
            --radius-md: 10px;
            --radius-sm: 100px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --glow-cyan: 0 0 18px rgba(0, 229, 255, 0.25);
            --glow-cyan-lg: 0 0 24px rgba(0, 229, 255, 0.45);
            --glow-pink: 0 0 18px rgba(255, 61, 129, 0.25);
            --glow-pink-lg: 0 0 24px rgba(255, 61, 129, 0.45);
            --section-pad: 88px;
            --section-pad-mobile: 56px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: #66efff;
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1240px;
        }

        .section-pad {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }

        /*** 顶部导航 ***/
        .main-nav {
            background: rgba(11, 11, 20, 0.82);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 14px 0;
        }

        .main-nav::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-pink));
            opacity: 0.7;
        }

        .main-nav .navbar-brand {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .main-nav .brand-pg {
            color: var(--accent-cyan);
            text-shadow: var(--glow-cyan);
            font-size: 26px;
            letter-spacing: 1px;
        }

        .main-nav .brand-text {
            font-weight: 500;
            color: var(--text-primary);
            letter-spacing: 2px;
        }

        .main-nav .navbar-nav {
            gap: 4px;
            margin-left: 32px;
        }

        .main-nav .nav-link {
            color: var(--text-muted);
            font-size: 15px;
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            position: relative;
            transition: color 0.25s ease, background 0.25s ease;
        }

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

        .main-nav .nav-link.active {
            color: var(--accent-cyan);
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.35);
        }

        .main-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
        }

        .btn-nav-cta,
        .btn-primary-gradient {
            background: var(--gradient-pink-purple);
            color: #fff;
            border: none;
            border-radius: var(--radius-md);
            padding: 10px 28px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 1px;
            box-shadow: 0 4px 20px rgba(255, 61, 129, 0.3);
            transition: box-shadow 0.3s ease, transform 0.2s ease;
        }

        .btn-nav-cta:hover,
        .btn-primary-gradient:hover {
            color: #fff;
            box-shadow: 0 6px 28px rgba(255, 61, 129, 0.5);
            transform: translateY(-2px);
        }

        .main-nav .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 6px 10px;
            border-radius: 8px;
        }

        .main-nav .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.2);
        }

        .main-nav .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(231,231,242,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /*** 按钮通用 ***/
        .btn-outline-cyan {
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            border-radius: var(--radius-md);
            padding: 12px 30px;
            font-size: 14px;
            font-weight: 600;
            background: transparent;
            transition: all 0.3s ease;
        }

        .btn-outline-cyan:hover {
            background: rgba(0, 229, 255, 0.1);
            color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
            transform: translateY(-2px);
        }

        /*** Hero ***/
        .hero {
            position: relative;
            background: linear-gradient(120deg, rgba(11, 11, 20, 0.88) 20%, rgba(11, 11, 20, 0.7) 60%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 120px 0 110px;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
            opacity: 0.5;
        }

        .hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.25);
            color: var(--accent-cyan);
            border-radius: 100px;
            padding: 6px 16px;
            font-size: 13px;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            background: linear-gradient(90deg, #00e5ff, #8a5cff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero .hero-sub {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 520px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

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

        .hero .hero-cover {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card), 0 0 40px rgba(0, 229, 255, 0.1);
            border: 1px solid var(--border-color);
            background: var(--bg-card);
        }

        .hero .hero-cover img {
            display: block;
            width: 100%;
            height: 320px;
            object-fit: cover;
        }

        .hero .hero-cover .cover-glow {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(180deg, transparent, rgba(11, 11, 20, 0.85));
            content: "";
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border-color);
        }

        .hero-stats .stat-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--accent-cyan);
            line-height: 1.2;
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.3);
        }

        .hero-stats .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /*** 板块标题 ***/
        .section-header {
            margin-bottom: 48px;
        }

        .section-header .section-tag {
            display: inline-block;
            background: var(--gradient-cyan-purple);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 100px;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .section-header .sub-text {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 640px;
        }

        /*** 目录块 ***/
        .catalog-section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }

        .catalog-card {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 28px;
            transition: all 0.3s ease;
            height: 100%;
            min-height: 110px;
            position: relative;
            overflow: hidden;
        }

        .catalog-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-card), 0 0 18px rgba(0, 229, 255, 0.15);
            transform: translateY(-4px);
            background: var(--bg-panel);
        }

        .catalog-card .catalog-num {
            font-size: 38px;
            font-weight: 800;
            color: rgba(0, 229, 255, 0.4);
            line-height: 1;
            font-style: italic;
            min-width: 60px;
            transition: color 0.3s ease;
        }

        .catalog-card:hover .catalog-num {
            color: var(--accent-cyan);
            text-shadow: var(--glow-cyan);
        }

        .catalog-card .catalog-info {
            flex: 1;
        }

        .catalog-card .catalog-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-primary);
            display: block;
            margin-bottom: 4px;
        }

        .catalog-card .catalog-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .catalog-card .catalog-arrow {
            color: var(--text-muted);
            font-size: 18px;
            transition: transform 0.3s ease, color 0.3s ease;
        }

        .catalog-card:hover .catalog-arrow {
            transform: translateX(6px);
            color: var(--accent-cyan);
        }

        .catalog-card .catalog-line {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: transparent;
            transition: background 0.3s ease;
        }

        .catalog-card:hover .catalog-line {
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-pink));
        }

        .catalog-card .catalog-corner {
            position: absolute;
            top: 12px;
            right: 14px;
            font-size: 11px;
            color: var(--text-muted);
            letter-spacing: 1px;
            writing-mode: horizontal-tb;
        }

        /*** 数据条 ***/
        .stats-band {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 24px 0;
        }

        .stats-band .stat-item {
            text-align: center;
            padding: 12px 8px;
        }

        .stats-band .stat-icon {
            font-size: 24px;
            color: var(--accent-cyan);
            margin-bottom: 8px;
        }

        .stats-band .stat-value {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .stats-band .stat-name {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /*** 精选内容区 ***/
        .featured-section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-card) 100%);
        }

        .feature-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            display: block;
            margin-bottom: 24px;
        }

        .feature-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-card), 0 0 20px rgba(0, 229, 255, 0.18);
            transform: translateY(-4px);
        }

        .feature-card .fc-cover {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

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

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

        .feature-card .fc-cover::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 60px;
            background: linear-gradient(180deg, transparent, rgba(18, 18, 31, 0.9));
        }

        .feature-card .fc-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: var(--gradient-pink-purple);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 100px;
            box-shadow: 0 4px 12px rgba(255, 61, 129, 0.3);
        }

        .feature-card .fc-body {
            padding: 18px 18px 20px;
        }

        .feature-card .fc-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 44px;
        }

        .feature-card .fc-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
        }

        /*** 最新信息列表 ***/
        .latest-section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }

        .info-list-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 8px 0;
            box-shadow: var(--shadow-card);
        }

        .info-row {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: background 0.25s ease;
            min-height: 68px;
        }

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

        .info-row:hover {
            background: var(--bg-hover);
        }

        .info-row .info-date {
            color: var(--text-muted);
            font-size: 13px;
            min-width: 86px;
            line-height: 1.4;
        }

        .info-row .info-badge {
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.2);
            color: var(--accent-cyan);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 100px;
            white-space: nowrap;
            min-width: 84px;
            text-align: center;
        }

        .info-row .info-title {
            flex: 1;
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 500;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color 0.2s ease;
        }

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

        .info-row .info-summary {
            flex: 0 0 40%;
            color: var(--text-muted);
            font-size: 13px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .info-row .info-arrow {
            color: var(--text-muted);
            font-size: 14px;
            transition: transform 0.3s ease, color 0.3s ease;
        }

        .info-row:hover .info-arrow {
            transform: translateX(4px);
            color: var(--accent-cyan);
        }

        .empty-state {
            padding: 48px 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 15px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-color);
        }

        /*** 相关推荐 ***/
        .recommend-section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
            background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-primary) 100%);
        }

        .recommend-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-panel);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.3s ease;
            display: block;
            height: 100%;
            margin-bottom: 24px;
        }

        .recommend-card:hover {
            border-color: var(--accent-pink);
            box-shadow: var(--shadow-card), 0 0 20px rgba(255, 61, 129, 0.2);
            transform: translateY(-4px);
        }

        .recommend-card .rc-cover {
            height: 160px;
            overflow: hidden;
            position: relative;
            background: var(--bg-card);
        }

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

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

        .recommend-card .rc-body {
            padding: 20px;
        }

        .recommend-card .rc-cat {
            font-size: 12px;
            color: var(--accent-cyan);
            margin-bottom: 8px;
            display: block;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .recommend-card .rc-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .recommend-card .rc-text {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /*** CTA 区块 ***/
        .cta-section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }

        .cta-panel {
            position: relative;
            border-radius: 20px;
            background: linear-gradient(135deg, rgba(255, 61, 129, 0.15), rgba(138, 92, 255, 0.15));
            border: 1px solid rgba(255, 61, 129, 0.3);
            padding: 56px 48px;
            text-align: center;
            overflow: hidden;
        }

        .cta-panel::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.15), transparent 70%);
        }

        .cta-panel::after {
            content: "";
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(255, 61, 129, 0.15), transparent 70%);
        }

        .cta-panel h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-panel p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 560px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
        }

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

        .btn-star {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            border-radius: var(--radius-md);
            padding: 12px 30px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .btn-star:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.2);
        }

        /*** FAQ ***/
        .faq-section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }

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

        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg) !important;
            margin-bottom: 16px;
            overflow: hidden;
        }

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

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none;
            border-bottom: 1px solid transparent;
            transition: color 0.2s ease;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.03);
            border-bottom-color: var(--border-color);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
        }

        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2300e5ff'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
            transition: transform 0.3s ease;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .faq-accordion .accordion-body {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.75;
            padding: 16px 24px 22px;
        }

        /*** 页脚 ***/
        .site-footer {
            background: #08080f;
            border-top: 1px solid var(--border-color);
            position: relative;
            padding: 64px 0 0;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-pink));
            opacity: 0.6;
        }

        .site-footer .footer-brand {
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 4px;
            margin-bottom: 12px;
        }

        .site-footer .footer-brand .brand-pg {
            color: var(--accent-cyan);
            text-shadow: var(--glow-cyan);
        }

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

        .site-footer .footer-desc {
            color: var(--text-muted);
            font-size: 13px;
            line-height: 1.7;
            max-width: 280px;
        }

        .site-footer .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

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

        .site-footer .footer-links li {
            margin-bottom: 10px;
        }

        .site-footer .footer-links a {
            color: var(--text-muted);
            font-size: 14px;
            transition: color 0.2s ease;
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 20px 0;
            margin-top: 48px;
            text-align: center;
            color: var(--text-muted);
            font-size: 13px;
        }

        /*** 响应式 ***/
        @media (max-width: 991.98px) {
            .main-nav .navbar-collapse {
                padding: 16px 0;
            }

            .main-nav .navbar-nav {
                margin-left: 0;
                margin-bottom: 12px;
            }

            .main-nav .nav-link {
                padding: 12px 16px;
                border-radius: 8px;
            }

            .main-nav .btn-nav-cta {
                width: 100%;
                text-align: center;
            }

            .hero {
                padding: 80px 0;
            }

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

            .hero .hero-stats {
                flex-wrap: wrap;
                gap: 20px;
            }
        }

        @media (max-width: 767.98px) {
            .section-pad {
                padding-top: var(--section-pad-mobile);
                padding-bottom: var(--section-pad-mobile);
            }

            .hero {
                padding: 60px 0 56px;
            }

            .hero h1 {
                font-size: 27px;
                line-height: 1.3;
            }

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

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

            .hero .hero-actions .btn {
                text-align: center;
            }

            .hero .hero-cover {
                margin-top: 32px;
            }

            .hero-stats {
                gap: 16px;
            }

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

            .catalog-card {
                padding: 20px;
                min-height: 96px;
            }

            .catalog-card .catalog-num {
                font-size: 30px;
                min-width: 44px;
            }

            .catalog-card .catalog-title {
                font-size: 16px;
            }

            .feature-card .fc-cover {
                height: 160px;
            }

            .info-row {
                padding: 16px 16px;
                gap: 10px;
            }

            .info-row .info-date {
                min-width: 60px;
                font-size: 12px;
            }

            .info-row .info-badge {
                min-width: auto;
                font-size: 11px;
                padding: 3px 10px;
            }

            .info-row .info-summary {
                display: none;
            }

            .info-row .info-arrow {
                display: none;
            }

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

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

            .faq-accordion .accordion-button {
                padding: 16px 18px;
                font-size: 15px;
            }

            .site-footer {
                padding-top: 48px;
            }

            .site-footer .footer-col {
                margin-bottom: 28px;
            }
        }

        @media (max-width: 575.98px) {
            .section-header h2 {
                font-size: 24px;
            }

            .section-header .sub-text {
                font-size: 14px;
            }

            .hero h1 {
                font-size: 24px;
            }

            .hero .hero-cover img {
                height: 220px;
            }

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

            .btn-outline-cyan {
                width: 100%;
                text-align: center;
            }

            .btn-primary-gradient {
                width: 100%;
                text-align: center;
            }

            .feature-card .fc-title {
                font-size: 15px;
            }

            .cta-buttons .btn {
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            --bg-page: #0b0b14;
            --bg-card: #12121f;
            --bg-panel: #181828;
            --color-primary: #00e5ff;
            --color-secondary: #ff3d81;
            --color-accent: #8a5cff;
            --color-success: #3ae0a1;
            --color-text: #e7e7f2;
            --color-muted: #9a9ab0;
            --border-color: rgba(255, 255, 255, 0.08);
            --radius-lg: 14px;
            --radius-md: 10px;
            --radius-pill: 100px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-glow-primary: 0 0 18px rgba(0, 229, 255, 0.25);
            --shadow-glow-secondary: 0 0 18px rgba(255, 61, 129, 0.35);
            --spacer-section: 80px;
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans", "Noto Sans SC", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--bg-page);
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: #5ff0ff;
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
        }

        section {
            padding: var(--spacer-section) 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.35;
            color: #ffffff;
            font-weight: 700;
        }

        h1 {
            font-size: clamp(32px, 5vw, 40px);
        }
        h2 {
            font-size: clamp(24px, 3.5vw, 30px);
            margin-bottom: 16px;
        }
        h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        p {
            color: var(--color-muted);
            margin-bottom: 16px;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.18);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 20px;
        }

        .section-label::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-primary);
            box-shadow: 0 0 8px var(--color-primary);
        }

        /* ===== Navigation ===== */
        .main-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1080;
            background: rgba(11, 11, 20, 0.82);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            padding: 14px 0;
        }

        .main-nav::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-secondary));
            opacity: 0.7;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 20px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.02em;
            transition: none;
        }

        .navbar-brand:hover {
            color: #ffffff;
        }

        .brand-pg {
            color: var(--color-primary);
            text-shadow: 0 0 18px rgba(0, 229, 255, 0.5);
            font-size: 22px;
        }

        .brand-text {
            color: #ffffff;
        }

        .navbar-nav {
            margin-left: 32px;
            gap: 4px;
        }

        .navbar-nav .nav-link {
            color: var(--color-muted);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: all 0.25s ease;
            position: relative;
        }

        .navbar-nav .nav-link:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.05);
        }

        .navbar-nav .nav-link.active {
            color: var(--color-primary);
            text-shadow: 0 0 14px rgba(0, 229, 255, 0.4);
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 3px;
            border-radius: 4px;
            background: var(--color-primary);
            box-shadow: 0 0 12px var(--color-primary);
        }

        .btn-nav-cta {
            background: linear-gradient(135deg, #ff3d81, #8a5cff);
            color: #ffffff;
            border: none;
            padding: 10px 26px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            box-shadow: 0 4px 24px rgba(255, 61, 129, 0.25);
            transition: all 0.3s ease;
        }

        .btn-nav-cta:hover {
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255, 61, 129, 0.45);
        }

        .navbar-toggler {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 6px 10px;
            background: transparent;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== Page Hero ===== */
        .page-hero {
            margin-top: 71px;
            position: relative;
            padding: 90px 0 100px;
            background: linear-gradient(180deg, rgba(11, 11, 20, 0.82), rgba(11, 11, 20, 0.66)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 1px solid var(--border-color);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 78% 40%, rgba(138, 92, 255, 0.12) 0%, transparent 60%);
            pointer-events: none;
        }

        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--color-primary);
            padding: 6px 20px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: 26px;
        }

        .hero-badge i {
            font-size: 12px;
        }

        .page-hero h1 {
            font-size: clamp(36px, 6vw, 52px);
            font-weight: 800;
            background: linear-gradient(90deg, #00e5ff, #8a5cff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .page-hero .hero-sub {
            font-size: 17px;
            color: var(--color-muted);
            line-height: 1.8;
            margin-bottom: 30px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-gradient {
            background: linear-gradient(135deg, #ff3d81, #8a5cff);
            color: #ffffff;
            border: none;
            padding: 13px 34px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            box-shadow: 0 6px 28px rgba(255, 61, 129, 0.3);
            transition: all 0.3s ease;
        }

        .btn-gradient:hover {
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 10px 36px rgba(255, 61, 129, 0.45);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #ffffff;
            padding: 13px 34px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            transition: all 0.3s ease;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-2px);
        }

        /* ===== Intro Section ===== */
        .intro-section {
            padding: 90px 0;
        }

        .intro-section .intro-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 36px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .intro-section .intro-card:hover {
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.45);
        }

        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            min-height: 320px;
            position: relative;
        }

        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
        }

        .intro-text .lead-text {
            font-size: 16px;
            color: #c9c9de;
            line-height: 1.85;
        }

        .intro-text .info-list {
            list-style: none;
            padding: 0;
            margin: 20px 0 0;
        }

        .intro-text .info-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            color: var(--color-muted);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .intro-text .info-list li:last-child {
            border-bottom: none;
        }

        .intro-text .info-list li i {
            color: var(--color-primary);
            font-size: 15px;
            margin-top: 5px;
            width: 18px;
            text-align: center;
            flex-shrink: 0;
        }

        /* ===== Feature Section ===== */
        .feature-section {
            background: linear-gradient(180deg, #0d0d18, #0b0b14);
            padding: 90px 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            height: 100%;
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), var(--shadow-glow-primary);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(138, 92, 255, 0.12));
            border: 1px solid rgba(0, 229, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 22px;
            color: var(--color-primary);
        }

        .feature-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 14px;
            margin-bottom: 0;
        }

        /* ===== Topics Section ===== */
        .topics-section {
            padding: 90px 0;
        }

        .topic-item {
            background: var(--bg-panel);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }

        .topic-item::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .topic-item:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 229, 255, 0.25);
        }

        .topic-item:hover::before {
            opacity: 1;
        }

        .topic-index {
            font-size: 34px;
            font-weight: 800;
            color: rgba(0, 229, 255, 0.22);
            line-height: 1;
            margin-bottom: 16px;
        }

        .topic-item h3 {
            font-size: 19px;
            margin-bottom: 10px;
        }

        .topic-item p {
            font-size: 14px;
            margin-bottom: 0;
            flex: 1;
        }

        .topic-tag {
            display: inline-block;
            margin-top: 18px;
            font-size: 12px;
            color: var(--color-muted);
            background: rgba(255, 255, 255, 0.05);
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            align-self: flex-start;
        }

        /* ===== Process Section ===== */
        .process-section {
            padding: 90px 0;
            background: linear-gradient(180deg, #0b0b14, #10101f);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .process-step {
            text-align: center;
            padding: 0 20px;
            position: relative;
        }

        .step-number {
            width: 68px;
            height: 68px;
            margin: 0 auto 24px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            font-weight: 700;
            color: var(--color-primary);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.15);
            position: relative;
        }

        .step-number::after {
            content: "";
            position: absolute;
            inset: -6px;
            border-radius: 50%;
            border: 1px dashed rgba(0, 229, 255, 0.25);
        }

        .process-step h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .process-step p {
            font-size: 14px;
            margin-bottom: 0;
        }

        .step-arrow {
            position: absolute;
            right: -24px;
            top: 34px;
            color: rgba(255, 255, 255, 0.18);
            font-size: 20px;
            z-index: 3;
        }

        /* ===== Featured Section ===== */
        .featured-section {
            padding: 90px 0;
        }

        .featured-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
            position: relative;
        }

        .featured-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: 0 12px 44px rgba(0, 0, 0, 0.5);
        }

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

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

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

        .featured-cover::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(11, 11, 20, 0.85));
        }

        .featured-body {
            padding: 22px 20px;
        }

        .badge-cat {
            display: inline-block;
            background: linear-gradient(90deg, rgba(0, 229, 255, 0.15), rgba(138, 92, 255, 0.15));
            color: var(--color-primary);
            border: 1px solid rgba(0, 229, 255, 0.2);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
        }

        .featured-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .featured-date {
            font-size: 13px;
            color: var(--color-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .featured-date i {
            font-size: 12px;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 90px 0;
            background: linear-gradient(180deg, #10101f, #0b0b14);
            border-top: 1px solid var(--border-color);
        }

        .accordion {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
        }

        .accordion-button {
            background: var(--bg-card);
            color: #ffffff;
            font-weight: 600;
            font-size: 16px;
            padding: 20px 22px;
            box-shadow: none;
        }

        .accordion-button:not(.collapsed) {
            background: var(--bg-panel);
            color: var(--color-primary);
        }

        .accordion-button:focus,
        .accordion-button:active {
            box-shadow: none;
            border-color: rgba(0, 229, 255, 0.3);
        }

        .accordion-button::after {
            background-image: none;
            content: "+";
            font-size: 24px;
            font-weight: 400;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.2);
            line-height: 1;
            transition: transform 0.3s ease;
        }

        .accordion-button:not(.collapsed)::after {
            content: "−";
            transform: rotate(0deg);
        }

        .accordion-body {
            padding: 6px 22px 20px;
            color: var(--color-muted);
            font-size: 14px;
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 90px 0;
            position: relative;
            background: linear-gradient(135deg, rgba(255, 61, 129, 0.12), rgba(138, 92, 255, 0.14), rgba(0, 229, 255, 0.08)), url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(11, 11, 20, 0.82);
        }

        .cta-box {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 620px;
            margin: 0 auto;
            background: rgba(18, 18, 31, 0.75);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 50px 44px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            box-shadow: 0 18px 60px rgba(0, 0, 0, 0.5);
        }

        .cta-box h2 {
            font-size: 28px;
            margin-bottom: 14px;
        }

        .cta-box p {
            color: var(--color-muted);
            font-size: 15px;
            margin-bottom: 28px;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #07070d;
            border-top: 1px solid var(--border-color);
            position: relative;
            padding: 70px 0 0;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-secondary));
            opacity: 0.5;
        }

        .footer-col {
            margin-bottom: 36px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .footer-brand .brand-pg {
            color: var(--color-primary);
            text-shadow: 0 0 14px rgba(0, 229, 255, 0.4);
            font-size: 22px;
        }

        .footer-brand .brand-text {
            color: #ffffff;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--color-muted);
            max-width: 320px;
            margin-bottom: 0;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            border-radius: 2px;
        }

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

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

        .footer-links a {
            color: var(--color-muted);
            font-size: 14px;
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a::before {
            content: "";
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--color-primary);
            opacity: 0.4;
            transition: opacity 0.25s ease;
        }

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

        .footer-links a:hover::before {
            opacity: 1;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: var(--color-muted);
        }

        .footer-bottom a {
            color: var(--color-muted);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .step-arrow {
                display: none;
            }
        }

        @media (max-width: 991px) {
            :root {
                --spacer-section: 64px;
            }

            .navbar-nav {
                margin-left: 0;
                margin-top: 14px;
            }

            .navbar-nav .nav-link {
                padding: 12px 14px;
                font-size: 16px;
            }

            .navbar-nav .nav-link.active::after {
                left: 14px;
                right: auto;
                width: 28px;
            }

            .btn-nav-cta {
                width: 100%;
                margin-top: 12px;
                text-align: center;
            }

            .page-hero {
                margin-top: 62px;
                padding: 70px 0 80px;
            }

            .intro-card {
                padding: 28px;
            }

            .intro-image {
                min-height: 260px;
                margin-bottom: 24px;
                position: relative;
            }

            .intro-image img {
                position: static;
                height: 260px;
            }

            .process-step {
                margin-bottom: 32px;
            }

            .featured-card {
                margin-bottom: 24px;
            }

            .footer-col {
                margin-bottom: 28px;
            }
        }

        @media (max-width: 767px) {
            section {
                padding-bottom: 52px;
                padding-top: 52px;
            }

            .page-hero {
                padding: 56px 0 66px;
                margin-top: 58px;
            }

            .page-hero h1 {
                font-size: 36px;
            }

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

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

            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }

            .intro-card {
                padding: 24px;
            }

            .feature-card {
                margin-bottom: 20px;
            }

            .topic-item {
                margin-bottom: 20px;
            }

            .cta-box {
                padding: 36px 24px;
            }

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

            .cta-actions {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }

            .cta-actions .btn {
                width: 100%;
                max-width: 260px;
            }

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

            .accordion-body {
                padding: 4px 18px 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 575px) {
            .page-hero {
                margin-top: 58px;
            }

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

            .featured-cover {
                aspect-ratio: 16 / 10;
            }

            .featured-body h3 {
                font-size: 15px;
            }

            .intro-image {
                min-height: 200px;
            }

            .intro-image img {
                height: 200px;
            }
        }

        @media (max-width: 375px) {
            .page-hero h1 {
                font-size: 28px;
            }

            .sec-short {
                padding: 40px 0;
            }
        }

/* roulang page: article */
:root {
            --bg-dark: #0b0b14;
            --bg-card: #12121f;
            --bg-panel: #181828;
            --neon-cyan: #00e5ff;
            --neon-pink: #ff3d81;
            --neon-purple: #8a5cff;
            --success: #3ae0a1;
            --text-main: #e7e7f2;
            --text-dim: #9a9ab0;
            --border-light: rgba(255, 255, 255, 0.08);
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-pill: 100px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-cyan: 0 0 18px rgba(0, 229, 255, 0.25);
            --shadow-cyan-hover: 0 0 28px rgba(0, 229, 255, 0.45);
            --gradient-cyan-purple: linear-gradient(90deg, #00e5ff, #8a5cff);
            --gradient-pink-purple: linear-gradient(135deg, #ff3d81, #8a5cff);
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans", "Noto Sans SC", "Microsoft YaHei", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            background-color: var(--bg-dark);
            color: var(--text-main);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--neon-cyan);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #5ee9ff;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1240px;
        }
        .main-nav {
            background: rgba(11, 11, 20, 0.82);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            min-height: 72px;
            position: sticky;
            top: 0;
            z-index: 1050;
        }
        .main-nav::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            height: 2px;
            background: linear-gradient(90deg, #00e5ff, #ff3d81);
            opacity: 0.7;
            pointer-events: none;
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            position: relative;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 10px 0;
            margin-right: 32px;
        }
        .brand-pg {
            font-size: 24px;
            font-weight: 800;
            color: var(--neon-cyan);
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.5);
            letter-spacing: 1px;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            letter-spacing: 2px;
        }
        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .navbar-nav .nav-link {
            color: var(--text-dim);
            font-weight: 500;
            padding: 10px 16px;
            border-radius: 8px;
            transition: all 0.3s ease;
            font-size: 15px;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.04);
        }
        .navbar-nav .nav-link.active {
            color: var(--neon-cyan);
            position: relative;
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.3);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 3px;
            border-radius: 2px;
            background: var(--neon-cyan);
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gradient-pink-purple);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 0 18px rgba(255, 61, 129, 0.3);
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .btn-nav-cta:hover {
            box-shadow: 0 0 28px rgba(255, 61, 129, 0.5);
            color: #fff;
            transform: translateY(-1px);
        }
        .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 8px;
            padding: 6px 10px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.2);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .article-hero {
            position: relative;
            padding: 80px 0 60px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 11, 20, 0.85) 0%, rgba(11, 11, 20, 0.72) 55%, #0b0b14 100%);
            z-index: 1;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(138, 92, 255, 0.12), transparent 60%);
            z-index: 1;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-dim);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--text-dim);
            transition: color 0.3s;
        }
        .breadcrumb a:hover {
            color: var(--neon-cyan);
        }
        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.25);
            font-size: 12px;
        }
        .article-hero .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--gradient-pink-purple);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
        }
        .article-hero h1 {
            font-size: 40px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--text-main);
            max-width: 820px;
            margin: 0 0 18px;
            letter-spacing: 0.5px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            font-size: 14px;
            color: var(--text-dim);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .article-meta i {
            color: var(--neon-cyan);
            width: 16px;
            text-align: center;
        }

        .article-main {
            padding: 60px 0 80px;
            background: var(--bg-dark);
        }
        .post-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .post-cover {
            position: relative;
            border-radius: 0;
            overflow: hidden;
            margin: 0;
        }
        .post-cover img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }
        .post-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(11, 11, 20, 0.5));
            pointer-events: none;
        }
        .post-body {
            padding: 40px;
        }
        .post-content {
            max-width: 760px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-main);
        }
        .post-content p {
            margin-bottom: 26px;
        }
        .post-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin: 40px 0 18px;
            padding-left: 14px;
            border-left: 4px solid var(--neon-cyan);
            line-height: 1.4;
        }
        .post-content h3 {
            font-size: 21px;
            font-weight: 600;
            color: var(--text-main);
            margin: 30px 0 14px;
        }
        .post-content ul,
        .post-content ol {
            margin: 0 0 26px;
            padding-left: 24px;
            color: var(--text-main);
        }
        .post-content li {
            margin-bottom: 10px;
        }
        .post-content ul li::marker {
            color: var(--neon-cyan);
        }
        .post-content ol li::marker {
            color: var(--neon-purple);
            font-weight: 700;
        }
        .post-content blockquote {
            border-left: 4px solid var(--neon-pink);
            background: var(--bg-panel);
            padding: 20px 24px;
            margin: 28px 0;
            border-radius: 0 12px 12px 0;
            color: var(--text-dim);
            font-style: italic;
        }
        .post-content blockquote p {
            margin: 0;
        }
        .post-content img {
            border-radius: 12px;
            margin: 28px 0;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        }
        .post-content a {
            color: var(--neon-cyan);
            border-bottom: 1px dashed rgba(0, 229, 255, 0.4);
        }
        .post-content a:hover {
            color: #5ee9ff;
            border-bottom-color: #5ee9ff;
        }

        .post-tags {
            margin-top: 36px;
            padding-top: 22px;
            border-top: 1px solid var(--border-light);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }
        .post-tags .tag-title {
            font-size: 13px;
            color: var(--text-dim);
            margin-right: 2px;
        }
        .post-tag {
            display: inline-block;
            background: var(--bg-panel);
            border: 1px solid var(--border-light);
            color: var(--text-dim);
            font-size: 12px;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .post-tag:hover {
            color: var(--neon-cyan);
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--shadow-cyan);
        }

        .post-share {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 22px;
        }
        .btn-share {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid var(--border-light);
            background: var(--bg-panel);
            color: var(--text-dim);
            font-size: 13px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .btn-share:hover {
            color: var(--neon-cyan);
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: var(--shadow-cyan);
            transform: translateY(-1px);
        }
        .btn-share.btn-collect:hover {
            color: #ffd700;
            border-color: rgba(255, 215, 0, 0.35);
            box-shadow: 0 0 18px rgba(255, 215, 0, 0.15);
        }

        .post-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 36px;
            padding-top: 26px;
            border-top: 1px solid var(--border-light);
        }
        .post-nav-link {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 12px;
            padding: 16px 20px;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .post-nav-link:hover {
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: var(--shadow-cyan);
            transform: translateY(-2px);
        }
        .post-nav-link .label {
            font-size: 12px;
            color: var(--text-dim);
        }
        .post-nav-link .title {
            font-size: 14px;
            color: var(--text-main);
            font-weight: 600;
            line-height: 1.5;
        }
        .post-nav-link.next {
            text-align: right;
        }

        .related-section {
            padding: 70px 0 80px;
            background: var(--bg-dark);
            border-top: 1px solid var(--border-light);
        }
        .section-title-wrap {
            margin-bottom: 40px;
        }
        .section-title-wrap h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 8px;
            position: relative;
            display: inline-block;
        }
        .section-title-wrap h2::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -6px;
            width: 42px;
            height: 3px;
            border-radius: 2px;
            background: var(--gradient-cyan-purple);
        }
        .section-title-wrap .section-sub {
            font-size: 14px;
            color: var(--text-dim);
            margin-top: 12px;
        }
        .related-card {
            display: block;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            height: 100%;
            transition: all 0.35s ease;
            text-decoration: none;
        }
        .related-card:hover {
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: var(--shadow-cyan-hover);
            transform: translateY(-4px);
        }
        .related-card .thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }
        .related-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .thumb img {
            transform: scale(1.06);
        }
        .related-card .thumb::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(11, 11, 20, 0.55));
        }
        .related-card .thumb .cat-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }
        .cat-badge {
            display: inline-block;
            background: var(--gradient-pink-purple);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
        }
        .related-card .info {
            padding: 18px 20px;
        }
        .related-card .info h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin: 0 0 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card:hover .info h3 {
            color: var(--neon-cyan);
        }
        .related-card .info .meta {
            font-size: 12px;
            color: var(--text-dim);
        }

        .cta-banner {
            padding: 70px 0;
            background: var(--bg-dark);
        }
        .cta-box {
            background: var(--bg-panel);
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: var(--radius-card);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 0 40px rgba(0, 229, 255, 0.08);
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--gradient-cyan-purple);
        }
        .cta-box h3 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 15px;
            color: var(--text-dim);
            max-width: 580px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gradient-pink-purple);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 15px;
            box-shadow: 0 0 20px rgba(255, 61, 129, 0.35);
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .btn-primary-glow:hover {
            box-shadow: 0 0 32px rgba(255, 61, 129, 0.55);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--neon-cyan);
            border: 1px solid rgba(0, 229, 255, 0.45);
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .btn-outline-glow:hover {
            background: rgba(0, 229, 255, 0.08);
            box-shadow: 0 0 22px rgba(0, 229, 255, 0.2);
            color: var(--neon-cyan);
            transform: translateY(-2px);
        }

        .not-found-state {
            padding: 80px 0;
            text-align: center;
            max-width: 560px;
            margin: 0 auto;
        }
        .not-found-state .icon {
            font-size: 56px;
            color: var(--neon-purple);
            margin-bottom: 24px;
        }
        .not-found-state h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
        }
        .not-found-state p {
            color: var(--text-dim);
            font-size: 15px;
            margin-bottom: 28px;
        }

        .site-footer {
            background: #08080f;
            padding: 70px 0 0;
            border-top: 1px solid var(--border-light);
            position: relative;
        }
        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, #00e5ff, #ff3d81);
            opacity: 0.5;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-bottom: 16px;
        }
        .footer-brand .brand-pg {
            font-size: 22px;
            font-weight: 800;
            color: var(--neon-cyan);
            text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
        }
        .footer-brand .brand-text {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.75;
            margin-bottom: 20px;
        }
        .footer-col {
            margin-bottom: 36px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 26px;
            height: 2px;
            background: var(--gradient-cyan-purple);
            border-radius: 1px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--text-dim);
            font-size: 14px;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .footer-links a:hover {
            color: var(--neon-cyan);
            padding-left: 6px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding: 22px 0;
            margin-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #6b6b80;
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(11, 11, 20, 0.95);
                border-radius: 0 0 14px 14px;
                padding: 16px;
                border: 1px solid var(--border-light);
                border-top: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                z-index: 1050;
            }
            .navbar-nav {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                margin-bottom: 14px;
            }
            .navbar-nav .nav-link {
                padding: 12px 16px;
                font-size: 15px;
                min-height: 44px;
                border-radius: 10px;
            }
            .navbar-nav .nav-link.active::after {
                left: auto;
                width: 4px;
                height: 20px;
                top: 50%;
                transform: translateY(-50%);
                right: 12px;
                border-radius: 4px;
            }
            .btn-nav-cta {
                width: 100%;
                justify-content: center;
                padding: 12px;
            }
            .article-hero {
                padding: 56px 0 44px;
            }
            .article-hero h1 {
                font-size: 32px;
            }
            .post-body {
                padding: 28px 22px;
            }
        }

        @media (max-width: 767.98px) {
            .article-hero h1 {
                font-size: 26px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .post-content {
                font-size: 15px;
            }
            .post-content h2 {
                font-size: 22px;
            }
            .post-content h3 {
                font-size: 18px;
            }
            .post-nav {
                flex-direction: column;
            }
            .post-nav-link.next {
                text-align: left;
            }
            .cta-box {
                padding: 40px 22px;
            }
            .cta-box h3 {
                font-size: 23px;
            }
            .section-title-wrap h2 {
                font-size: 26px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary-glow,
            .btn-outline-glow {
                justify-content: center;
                width: 100%;
            }
        }

        @media (max-width: 575.98px) {
            .article-hero {
                padding: 44px 0 36px;
            }
            .article-hero h1 {
                font-size: 22px;
            }
            .breadcrumb {
                font-size: 12px;
                flex-wrap: wrap;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .post-body {
                padding: 20px 16px;
            }
            .post-content {
                font-size: 14.5px;
                line-height: 1.8;
            }
            .post-tags {
                gap: 6px;
            }
            .post-tag {
                font-size: 11px;
                padding: 3px 10px;
            }
            .related-card .info {
                padding: 14px;
            }
            .related-card .info h3 {
                font-size: 14px;
            }
            .footer-col {
                text-align: left;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0b0b14;
            --bg-card: #12121f;
            --bg-panel: #181828;
            --neon-cyan: #00e5ff;
            --neon-pink: #ff3d81;
            --accent-purple: #8a5cff;
            --success: #3ae0a1;
            --text-primary: #e7e7f2;
            --text-muted: #9a9ab0;
            --border-color: rgba(255, 255, 255, 0.08);
            --radius-lg: 14px;
            --radius-md: 10px;
            --radius-pill: 100px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-neon-cyan: 0 0 18px rgba(0, 229, 255, 0.25);
            --shadow-neon-pink: 0 0 18px rgba(255, 61, 129, 0.25);
            --gradient-primary: linear-gradient(90deg, #00e5ff, #8a5cff);
            --gradient-accent: linear-gradient(135deg, #ff3d81, #8a5cff);
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans", "Noto Sans SC", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

        body.modal-open,
        body[data-focus-trap] {
            overflow-x: hidden;
        }

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

        a:hover {
            color: #67efff;
        }

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

        .container {
            max-width: 1260px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .btn {
            border-radius: var(--radius-md);
            font-weight: 600;
            padding: 10px 26px;
            border: 1px solid transparent;
            transition: all 0.3s ease;
        }

        .btn:focus,
        .btn:focus-visible {
            outline: 2px solid rgba(0, 229, 255, 0.5);
            outline-offset: 2px;
            box-shadow: none;
        }

        .btn-cta {
            background: var(--gradient-accent);
            color: #fff;
            border: none;
            box-shadow: var(--shadow-neon-pink);
        }

        .btn-cta:hover {
            background: linear-gradient(135deg, #ff5a92, #9a70ff);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(255, 61, 129, 0.45);
        }

        .btn-outline-cyan {
            background: transparent;
            border: 1px solid rgba(0, 229, 255, 0.55);
            color: var(--neon-cyan);
        }

        .btn-outline-cyan:hover {
            background: rgba(0, 229, 255, 0.08);
            color: #67efff;
            border-color: var(--neon-cyan);
            box-shadow: var(--shadow-neon-cyan);
        }

        /* ===== 导航 ===== */
        .main-nav {
            background: rgba(11, 11, 20, 0.82);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            z-index: 1030;
            padding: 14px 0;
        }

        .main-nav::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-pink));
            opacity: 0.7;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
        }

        .brand-pg {
            font-size: 26px;
            font-weight: 800;
            letter-spacing: 2px;
            color: var(--neon-cyan);
            text-shadow: 0 0 14px rgba(0, 229, 255, 0.55);
            line-height: 1;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            letter-spacing: 1px;
            line-height: 1.2;
        }

        .main-nav .navbar-nav {
            gap: 4px;
        }

        .main-nav .nav-link {
            display: block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 6px;
            position: relative;
            transition: color 0.25s ease, text-shadow 0.25s ease;
        }

        .main-nav .nav-link:hover {
            color: var(--text-primary);
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.4);
        }

        .main-nav .nav-link.active {
            color: var(--neon-cyan);
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.35);
        }

        .main-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 3px;
            border-radius: 2px;
            background: var(--gradient-primary);
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
        }

        .btn-nav-cta {
            background: var(--gradient-accent);
            color: #fff;
            border: none;
            padding: 9px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-neon-pink);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-nav-cta:hover {
            background: linear-gradient(135deg, #ff5a92, #9a70ff);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 26px rgba(255, 61, 129, 0.5);
        }

        .navbar-toggler {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 6px 10px;
            background: transparent;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23e7e7f2' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            width: 24px;
            height: 24px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px rgba(0, 229, 255, 0.35);
        }

        /* ===== 页头 Banner ===== */
        .page-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 96px 0 88px;
            border-bottom: 1px solid var(--border-color);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 11, 20, 0.72) 0%, rgba(11, 11, 20, 0.88) 100%);
        }

        .page-hero-inner {
            position: relative;
            z-index: 1;
            max-width: 720px;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--neon-cyan);
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: var(--radius-pill);
            margin-bottom: 20px;
        }

        .page-hero h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 14px;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero p {
            font-size: 17px;
            color: var(--text-muted);
            margin: 0;
            max-width: 560px;
        }

        /* ===== 区块通用 ===== */
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--neon-pink);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-head {
            margin-bottom: 44px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 620px;
            margin: 0;
        }

        .section-head.text-center p {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 分类介绍 ===== */
        .intro-section {
            padding: 88px 0;
            background: var(--bg-primary);
        }

        .intro-content h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 18px;
        }

        .intro-content>p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 18px;
        }

        .intro-list {
            list-style: none;
            padding: 0;
            margin: 24px 0 0;
        }

        .intro-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 14px;
            font-size: 15px;
            color: var(--text-primary);
            line-height: 1.7;
        }

        .intro-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 1px;
            color: var(--neon-cyan);
            font-size: 14px;
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
        }

        .intro-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }

        .intro-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(11, 11, 20, 0.55) 100%);
        }

        .intro-visual img {
            width: 100%;
            display: block;
        }

        /* ===== 核心主题 ===== */
        .topic-section {
            padding: 84px 0;
            background: #0d0d18;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            height: 100%;
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .topic-card::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 3px;
            background: var(--gradient-primary);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .topic-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--shadow-card), var(--shadow-neon-cyan);
        }

        .topic-card:hover::before {
            opacity: 1;
        }

        .topic-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--neon-cyan);
            background: rgba(0, 229, 255, 0.1);
            border-radius: 12px;
            margin-bottom: 20px;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }

        .topic-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .topic-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== 查阅流程 ===== */
        .process-section {
            padding: 88px 0;
            background: var(--bg-primary);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 20px;
        }

        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            position: relative;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .process-step:hover {
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: var(--shadow-card);
        }

        .step-num {
            font-size: 34px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1px var(--neon-cyan);
            line-height: 1;
            margin-bottom: 16px;
            display: block;
        }

        .process-step h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        .process-step::after {
            content: "\f061";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            right: 18px;
            top: 30px;
            font-size: 16px;
            color: rgba(0, 229, 255, 0.35);
            transition: transform 0.3s ease, color 0.3s ease;
        }

        .process-step:hover::after {
            transform: translateX(4px);
            color: var(--neon-cyan);
        }

        /* ===== 精选指南 ===== */
        .featured-guide-section {
            padding: 88px 0;
            background: #0d0d18;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--shadow-card), var(--shadow-neon-cyan);
        }

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

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

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

        .guide-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(11, 11, 20, 0.7) 100%);
        }

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

        .guide-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
        }

        .guide-badge {
            display: inline-block;
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 600;
            color: #fff;
            background: var(--gradient-accent);
            border-radius: var(--radius-pill);
            line-height: 1.5;
        }

        .guide-date {
            font-size: 13px;
            color: var(--text-muted);
        }

        .guide-body h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .guide-body h3 a {
            color: inherit;
        }

        .guide-body h3 a:hover {
            color: var(--neon-cyan);
        }

        .guide-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            flex: 1;
        }

        .guide-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--neon-cyan);
            margin-top: 16px;
            transition: gap 0.3s ease;
        }

        .guide-link i {
            font-size: 12px;
            transition: transform 0.3s ease;
        }

        .guide-link:hover {
            color: #67efff;
            gap: 12px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 88px 0;
            background: var(--bg-primary);
        }

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

        .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .accordion-item:not(:first-child) {
            border-top: 1px solid var(--border-color);
        }

        .accordion-item:focus-within {
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--shadow-neon-cyan);
        }

        .accordion-button {
            background: var(--bg-card);
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 22px;
            box-shadow: none;
            border: none;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: color 0.3s ease, background 0.3s ease;
        }

        .accordion-button:hover {
            background: #161625;
            color: var(--neon-cyan);
        }

        .accordion-button:not(.collapsed) {
            background: var(--bg-panel);
            color: var(--neon-cyan);
            box-shadow: none;
        }

        .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f067";
            font-size: 16px;
            color: var(--neon-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background-color: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.25);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .accordion-button:not(.collapsed)::after {
            content: "\f068";
            transform: rotate(0deg);
            color: #fff;
            background-color: var(--neon-cyan);
        }

        .accordion-body {
            background: var(--bg-card);
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            padding: 4px 22px 22px;
            border-top: 1px solid var(--border-color);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 88px 0;
            background: #0d0d18;
            border-top: 1px solid var(--border-color);
        }

        .cta-box {
            position: relative;
            background: var(--bg-panel);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 60px 50px;
            text-align: center;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 0;
            width: 60%;
            height: 3px;
            background: var(--gradient-primary);
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.4);
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-box p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 28px;
        }

        .cta-box .btn {
            padding: 12px 34px;
            font-size: 15px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #08080f;
            border-top: 1px solid var(--border-color);
            position: relative;
            padding-top: 60px;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            top: -1px;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--accent-purple), var(--neon-pink));
            opacity: 0.7;
        }

        .site-footer .footer-col {
            margin-bottom: 36px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }

        .footer-brand .brand-pg {
            font-size: 24px;
        }

        .footer-brand .brand-text {
            font-size: 17px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0;
            max-width: 320px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

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

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

        .footer-links a {
            color: var(--text-muted);
            font-size: 14px;
            transition: color 0.25s ease, padding-left 0.25s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 20px 0 24px;
            text-align: center;
        }

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

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .main-nav {
                padding: 10px 0;
            }

            .main-nav .navbar-collapse {
                padding-top: 14px;
                border-top: 1px solid var(--border-color);
                margin-top: 10px;
            }

            .main-nav .navbar-nav {
                gap: 2px;
            }

            .main-nav .nav-link {
                padding: 12px 16px;
                font-size: 15px;
            }

            .main-nav .nav-link.active::after {
                left: 16px;
                right: auto;
                width: 48px;
            }

            .btn-nav-cta {
                margin-top: 12px;
                width: 100%;
                text-align: center;
            }

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

        @media (max-width: 767.98px) {
            .page-hero {
                padding: 68px 0 60px;
            }

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

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

            .intro-section,
            .topic-section,
            .process-section,
            .featured-guide-section,
            .faq-section,
            .cta-section {
                padding: 56px 0;
            }

            .section-head {
                margin-bottom: 30px;
            }

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

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

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

            .process-step::after {
                display: none;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .page-hero p {
                font-size: 14px;
            }

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

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

            .btn {
                padding: 9px 20px;
                font-size: 14px;
            }

            .btn-nav-cta {
                padding: 10px 16px;
            }

            .hero-badge {
                font-size: 12px;
                padding: 5px 14px;
            }

            .accordion-button {
                font-size: 15px;
                padding: 15px 16px;
            }

            .accordion-body {
                font-size: 14px;
                padding: 3px 16px 18px;
            }

            .footer-col {
                flex: 0 0 100%;
                max-width: 100%;
            }
        }