/* roulang page: index */
:root {
            --bg-primary: #080e1a;
            --bg-secondary: #0e1526;
            --bg-card: #131c2e;
            --bg-deep: #050910;
            --bg-soft: #1a2440;
            --neon-primary: #00e5ff;
            --neon-secondary: #7c3aed;
            --neon-accent: #ff2d95;
            --text-primary: #f0f4ff;
            --text-secondary: #a0b0c8;
            --text-muted: #6b7d99;
            --border-color: rgba(0, 229, 255, 0.14);
            --border-light: rgba(255, 255, 255, 0.08);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-main: 0 12px 40px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 24px rgba(0, 229, 255, 0.12);
            --shadow-glow-strong: 0 0 40px rgba(0, 229, 255, 0.18);
            --font-primary: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

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

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: 90px 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--neon-primary);
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: 999px;
            padding: 6px 18px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }

        .section-sub {
            font-size: 17px;
            color: var(--text-secondary);
            margin-top: 12px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1080;
            background: rgba(8, 14, 26, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(5, 9, 16, 0.94);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.55);
        }

        .navbar {
            padding: 14px 0;
        }

        .navbar-brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .navbar-brand i {
            color: var(--neon-primary);
            font-size: 26px;
        }

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

        .navbar-nav {
            gap: 4px;
            align-items: center;
        }

        .nav-link {
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 15px;
            padding: 8px 18px !important;
            border-radius: 999px;
            position: relative;
            transition: color 0.25s ease, background 0.25s ease;
        }

        .nav-link:hover {
            color: var(--neon-primary);
            background: rgba(0, 229, 255, 0.06);
        }

        .nav-link.active {
            color: var(--neon-primary);
            background: rgba(0, 229, 255, 0.08);
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 999px;
            background: var(--neon-primary);
            box-shadow: 0 0 12px var(--neon-primary);
        }

        .btn-neon {
            background: linear-gradient(135deg, var(--neon-primary) 0%, var(--neon-secondary) 100%);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            border: none;
            border-radius: 999px;
            padding: 10px 28px;
            box-shadow: 0 4px 20px rgba(0, 229, 255, 0.25);
            transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
        }

        .btn-neon:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 229, 255, 0.35);
            filter: brightness(1.08);
        }

        .btn-neon:focus,
        .btn-neon:active {
            outline: none;
            box-shadow: 0 0 0 4px rgba(0, 229, 255, 0.2);
        }

        .btn-outline-neon {
            background: transparent;
            color: var(--neon-primary);
            border: 1.5px solid rgba(0, 229, 255, 0.45);
            font-weight: 600;
            font-size: 15px;
            border-radius: 999px;
            padding: 10px 28px;
            transition: all 0.25s ease;
        }

        .btn-outline-neon:hover {
            background: rgba(0, 229, 255, 0.08);
            color: var(--neon-primary);
            border-color: var(--neon-primary);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.12);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 10px;
            padding: 6px 10px;
            color: var(--text-primary);
            font-size: 20px;
            background: transparent;
        }

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

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 140px 0 100px;
            background: linear-gradient(135deg, rgba(5, 9, 16, 0.92) 0%, rgba(8, 14, 26, 0.75) 50%, rgba(13, 20, 36, 0.9) 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(0, 229, 255, 0.08) 0%, transparent 60%),
                linear-gradient(180deg, rgba(5, 9, 16, 0.75) 0%, rgba(5, 9, 16, 0.55) 50%, var(--bg-primary) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: 999px;
            padding: 8px 20px;
            font-size: 13px;
            font-weight: 700;
            color: var(--neon-primary);
            letter-spacing: 1px;
            margin-bottom: 24px;
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--neon-primary);
            box-shadow: 0 0 10px var(--neon-primary);
            animation: pulse-dot 1.5s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(0.8);
            }
        }

        .hero h1 {
            font-size: 54px;
            font-weight: 900;
            line-height: 1.2;
            color: var(--text-primary);
            letter-spacing: 1px;
            margin-bottom: 20px;
            background: linear-gradient(120deg, #fff 0%, var(--neon-primary) 50%, #fff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 580px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 24px;
        }

        .hero-status {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .hero-status span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hero-status i {
            color: var(--neon-primary);
            font-size: 12px;
        }

        .hero-stat-card {
            display: flex;
            gap: 40px;
            padding: 24px 28px;
            background: rgba(19, 28, 46, 0.7);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            backdrop-filter: blur(8px);
            margin-top: 48px;
            max-width: 520px;
        }

        .hero-stat-item {
            text-align: center;
        }

        .hero-stat-item .num {
            font-size: 26px;
            font-weight: 800;
            color: var(--neon-primary);
            display: block;
        }

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

        /* ===== Feature cards ===== */
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            height: 100%;
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-primary), var(--neon-secondary));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.25);
            box-shadow: var(--shadow-main), var(--shadow-glow);
        }

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

        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.15) 0%, rgba(124, 58, 237, 0.15) 100%);
            border: 1px solid rgba(0, 229, 255, 0.25);
            color: var(--neon-primary);
            margin-bottom: 22px;
            transition: transform 0.3s ease;
        }

        .feature-card:hover .feature-icon {
            transform: scale(1.05) rotate(-3deg);
        }

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

        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ===== Category cards ===== */
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            height: 100%;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-main), var(--shadow-glow-strong);
        }

        .category-media {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

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

        .category-card:hover .category-media img {
            transform: scale(1.06);
        }

        .category-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, var(--bg-card) 100%);
        }

        .category-body {
            padding: 28px 26px 30px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .category-body h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .category-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 18px;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 15px;
            color: var(--neon-primary);
            transition: gap 0.25s ease;
        }

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

        /* ===== News list ===== */
        .news-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 18px 24px;
            box-shadow: var(--shadow-main);
        }

        .news-list-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 14px;
            border-radius: var(--radius-md);
            border-bottom: 1px solid var(--border-light);
            transition: background 0.25s ease, transform 0.25s ease;
        }

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

        .news-list-item:hover {
            background: rgba(0, 229, 255, 0.04);
            transform: translateX(4px);
        }

        .news-index {
            font-size: 15px;
            font-weight: 800;
            color: var(--neon-primary);
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.15);
            flex-shrink: 0;
        }

        .news-cat {
            font-size: 12px;
            font-weight: 700;
            color: var(--neon-accent);
            background: rgba(255, 45, 149, 0.1);
            border-radius: 999px;
            padding: 4px 14px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .news-title {
            flex: 1;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .news-date {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .news-empty {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 16px;
        }

        /* ===== Stats ===== */
        .stats-wrap {
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.04) 0%, rgba(124, 58, 237, 0.04) 100%);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        .stat-item {
            text-align: center;
            position: relative;
            padding: 20px 10px;
        }

        .stat-item:not(:last-child)::after {
            content: "";
            position: absolute;
            right: -15px;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 48px;
            background: var(--border-light);
        }

        .stat-num {
            font-size: 42px;
            font-weight: 900;
            line-height: 1.2;
            background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            font-size: 15px;
            color: var(--text-secondary);
            margin-top: 8px;
        }

        /* ===== Steps / Timeline ===== */
        .steps-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 34px 28px;
            position: relative;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

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

        .step-num {
            font-size: 42px;
            font-weight: 900;
            line-height: 1;
            color: transparent;
            -webkit-text-stroke: 1.5px var(--neon-primary);
            margin-bottom: 20px;
            display: block;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

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

        /* ===== Guide cards ===== */
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-main), var(--shadow-glow);
        }

        .guide-media {
            height: 160px;
            overflow: hidden;
            position: relative;
        }

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

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

        .guide-media .guide-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(5, 9, 16, 0.75);
            backdrop-filter: blur(6px);
            color: var(--neon-primary);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }

        .guide-body {
            padding: 22px 24px 26px;
        }

        .guide-body h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

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

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

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

        .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-size: 17px;
            font-weight: 700;
            padding: 20px 26px;
            box-shadow: none;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(0, 229, 255, 0.04);
            color: var(--neon-primary);
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.12);
        }

        .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f107";
            color: var(--neon-primary);
            width: auto;
            height: auto;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--neon-primary);
        }

        .accordion-body {
            padding: 0 26px 22px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 90px 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border-radius: var(--radius-lg);
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(5, 9, 16, 0.92) 0%, rgba(8, 14, 26, 0.78) 100%);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .cta-content h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .cta-content p {
            font-size: 17px;
            color: var(--text-secondary);
            margin-bottom: 32px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-color);
            padding: 70px 0 30px;
            margin-top: 90px;
        }

        .footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand i {
            color: var(--neon-primary);
        }

        .footer-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-primary), var(--neon-secondary));
            border-radius: 2px;
        }

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

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

        .footer-links a {
            color: var(--text-muted);
            font-size: 15px;
            transition: color 0.25s ease, padding-left 0.25s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 24px;
            margin-top: 44px;
            text-align: center;
            font-size: 14px;
            color: var(--text-muted);
        }

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

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 44px;
            }

            .section-title {
                font-size: 32px;
            }

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

            .stat-item:not(:last-child)::after {
                display: none;
            }

            .steps-wrap {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }

            .navbar-collapse {
                background: rgba(8, 14, 26, 0.98);
                border-radius: var(--radius-md);
                padding: 16px 20px;
                margin-top: 12px;
                border: 1px solid var(--border-color);
            }

            .navbar-nav {
                gap: 2px;
                margin-bottom: 14px;
            }

            .nav-link.active::after {
                bottom: auto;
                top: 50%;
                transform: translateY(-50%) translateX(0);
                left: auto;
                right: 8px;
                width: 4px;
                height: 4px;
                background: var(--neon-primary);
            }

            .hero {
                min-height: auto;
                padding: 120px 0 70px;
            }

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

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

            .hero-stat-card {
                flex-wrap: wrap;
                gap: 20px;
                margin-top: 32px;
            }

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

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

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

            .category-media {
                height: 170px;
            }

            .news-list-item {
                flex-wrap: wrap;
                gap: 10px 14px;
                padding: 14px 10px;
            }

            .news-title {
                order: 2;
                width: 100%;
                white-space: normal;
            }

            .news-date {
                margin-left: auto;
            }

            .cta-section {
                padding: 60px 0;
            }

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

        @media (max-width: 520px) {
            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }

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

            .hero-stat-card {
                flex-direction: column;
                gap: 16px;
            }

            .stats-wrap {
                grid-template-columns: 1fr;
                padding: 30px 24px;
            }

            .steps-wrap {
                grid-template-columns: 1fr;
            }

            .section {
                padding: 48px 0;
            }

            .section-title {
                font-size: 23px;
            }

            .feature-card {
                padding: 26px 22px;
            }

            .guide-media {
                height: 140px;
            }

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

        /* ===== Utility ===== */
        .text-neon {
            color: var(--neon-primary);
        }

        .text-accent {
            color: var(--neon-accent);
        }

        .mt-1 { margin-top: 0.5rem; }
        .mt-2 { margin-top: 1rem; }
        .mt-3 { margin-top: 1.5rem; }
        .mt-4 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 0.5rem; }
        .mb-2 { margin-bottom: 1rem; }
        .mb-3 { margin-bottom: 1.5rem; }
        .mb-4 { margin-bottom: 2rem; }

/* roulang page: category1 */
:root {
            --bg-dark: #080b12;
            --bg-deep: #0d1220;
            --bg-card: #111827;
            --bg-card-hover: #1a2332;
            --neon-primary: #00e5ff;
            --neon-secondary: #a855f7;
            --neon-glow: rgba(0, 229, 255, 0.35);
            --text-light: #f1f5f9;
            --text-body: #cbd5e1;
            --text-muted: #8b98ab;
            --border-color: rgba(0, 229, 255, 0.14);
            --border-light: rgba(148, 163, 184, 0.12);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.4);
            --shadow-neon: 0 0 20px rgba(0, 229, 255, 0.15);
            --spacing-section: 80px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ========== 导航 ========== */
        .site-header {
            background: rgba(8, 11, 18, 0.88);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .site-header .navbar {
            padding: 16px 0;
            min-height: 72px;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-light) !important;
            letter-spacing: 1px;
            transition: all 0.3s ease;
        }

        .navbar-brand i {
            color: var(--neon-primary);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 8px var(--neon-glow));
        }

        .navbar-brand:hover {
            color: var(--neon-primary) !important;
            text-shadow: 0 0 20px var(--neon-glow);
        }

        .navbar-nav .nav-link {
            color: var(--text-body);
            font-weight: 500;
            padding: 10px 18px !important;
            border-radius: var(--radius-sm);
            position: relative;
            transition: all 0.3s ease;
        }

        .navbar-nav .nav-link:hover {
            color: var(--neon-primary);
            background: rgba(0, 229, 255, 0.06);
        }

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

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--neon-primary);
            box-shadow: 0 0 12px var(--neon-glow);
            border-radius: 2px;
        }

        .btn-neon {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
            color: #0a0a0a;
            font-weight: 700;
            border: none;
            padding: 10px 24px;
            border-radius: 50px;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
            transition: all 0.3s ease;
        }

        .btn-neon:hover {
            color: #0a0a0a;
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 229, 255, 0.35);
        }

        .btn-neon:focus,
        .navbar-toggler:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.25);
        }

        .navbar-toggler {
            border: 1px solid var(--border-color);
            color: var(--neon-primary);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: transparent;
        }

        .navbar-toggler i {
            font-size: 1.3rem;
        }

        /* ========== 横幅 ========== */
        .category-banner {
            position: relative;
            background: linear-gradient(135deg, rgba(8, 11, 18, 0.92), rgba(13, 18, 32, 0.7)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 100px 0 80px;
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }

        .category-banner::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.14), transparent 65%);
            border-radius: 50%;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            color: var(--neon-primary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .category-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .category-banner h1 span {
            color: var(--neon-primary);
            text-shadow: 0 0 25px var(--neon-glow);
        }

        .category-banner .lead {
            color: var(--text-body);
            font-size: 1.15rem;
            max-width: 640px;
            margin-bottom: 30px;
        }

        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-outline-neon {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1px solid rgba(0, 229, 255, 0.4);
            color: var(--neon-primary);
            font-weight: 600;
            padding: 10px 26px;
            border-radius: 50px;
            transition: all 0.3s ease;
        }

        .btn-outline-neon:hover {
            background: rgba(0, 229, 255, 0.1);
            color: var(--neon-primary);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
            transform: translateY(-2px);
        }

        .btn-outline-neon:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.2);
        }

        /* ========== 通用区块 ========== */
        .section-pad {
            padding: var(--spacing-section) 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 12px;
            position: relative;
        }

        .section-sub {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 640px;
            margin-bottom: 40px;
        }

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

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

        /* ========== 入口卡片 ========== */
        .entrance-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            height: 100%;
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }

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

        .entrance-card:hover {
            border-color: rgba(0, 229, 255, 0.3);
            transform: translateY(-6px);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4), 0 0 30px rgba(0, 229, 255, 0.06);
        }

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

        .entrance-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            background: rgba(0, 229, 255, 0.1);
            color: var(--neon-primary);
            margin-bottom: 20px;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }

        .entrance-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 10px;
        }

        .entrance-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 18px;
        }

        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 18px;
        }

        .tag {
            display: inline-block;
            background: rgba(168, 85, 247, 0.12);
            border: 1px solid rgba(168, 85, 247, 0.25);
            color: #c4a5f7;
            font-size: 0.78rem;
            font-weight: 500;
            padding: 3px 14px;
            border-radius: 50px;
        }

        .entrance-link {
            color: var(--neon-primary);
            font-weight: 600;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .entrance-link:hover {
            gap: 10px;
            color: #66f0ff;
        }

        /* ========== 步骤流程 ========== */
        .steps-section {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .step-item {
            text-align: center;
            padding: 30px 20px;
            position: relative;
        }

        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
            color: #0a0a0a;
            font-weight: 800;
            font-size: 1.15rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.25);
        }

        .step-item h4 {
            color: var(--text-light);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-item p {
            color: var(--text-muted);
            font-size: 0.9rem;
            max-width: 240px;
            margin: 0 auto;
        }

        .step-arrow {
            position: absolute;
            top: 50%;
            right: -20px;
            color: var(--neon-primary);
            font-size: 1.4rem;
            opacity: 0.4;
            transform: translateY(-50%);
        }

        /* ========== 安全清单 ========== */
        .security-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px;
            height: 100%;
            display: flex;
            gap: 16px;
            transition: all 0.3s ease;
        }

        .security-card:hover {
            border-color: rgba(0, 229, 255, 0.25);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
        }

        .security-icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: rgba(0, 229, 255, 0.1);
            color: var(--neon-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }

        .security-card h4 {
            color: var(--text-light);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .security-card p {
            color: var(--text-muted);
            font-size: 0.88rem;
            margin: 0;
        }

        /* ========== 图片展示区 ========== */
        .showcase-block {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .showcase-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }

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

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

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

        .showcase-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 10px 0;
            color: var(--text-body);
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
            font-size: 0.95rem;
        }

        .showcase-list li:last-child {
            border-bottom: none;
        }

        .showcase-list i {
            color: var(--neon-primary);
            margin-top: 5px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-dark);
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px 26px;
            margin-bottom: 16px;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.2);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
        }

        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            gap: 16px;
        }

        .faq-q h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-light);
            margin: 0;
        }

        .faq-q i {
            color: var(--neon-primary);
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-q i {
            transform: rotate(45deg);
        }

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

        .faq-a-inner {
            padding-top: 14px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-item.active .faq-a {
            max-height: 300px;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, rgba(8, 11, 18, 0.92), rgba(13, 18, 32, 0.85)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            padding: 90px 0;
            border-top: 1px solid var(--border-color);
        }

        .cta-inner {
            background: rgba(17, 24, 39, 0.7);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }

        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: var(--text-body);
            max-width: 520px;
            margin: 0 auto 30px;
            font-size: 1.05rem;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 14px;
        }

        .footer-brand i {
            color: var(--neon-primary);
            font-size: 1.4rem;
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            max-width: 340px;
            line-height: 1.7;
        }

        .footer-title {
            color: var(--text-light);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--neon-primary);
            box-shadow: 0 0 10px var(--neon-glow);
        }

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

        .footer-links li {
            margin-bottom: 10px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

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

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

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.1);
            margin-top: 40px;
            padding-top: 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .footer-bottom p {
            margin: 4px 0;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--bg-deep);
                padding: 16px 20px;
                border-radius: var(--radius-md);
                margin-top: 12px;
                border: 1px solid var(--border-color);
            }

            .navbar-nav .nav-link.active::after {
                display: none;
            }

            .navbar-nav .nav-link.active {
                background: rgba(0, 229, 255, 0.08);
            }

            .btn-neon {
                margin-top: 8px;
                width: 100%;
                justify-content: center;
            }

            .category-banner {
                padding: 70px 0 50px;
            }

            .category-banner h1 {
                font-size: 2rem;
            }

            .step-arrow {
                display: none;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --spacing-section: 50px;
            }

            .category-banner h1 {
                font-size: 1.7rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .cta-inner {
                padding: 36px 22px;
            }

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

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

        @media (max-width: 519.98px) {
            .category-banner h1 {
                font-size: 1.45rem;
            }

            .category-banner .lead {
                font-size: 1rem;
            }

            .banner-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .section-sub {
                font-size: 0.95rem;
            }

            .faq-item {
                padding: 18px 16px;
            }

            .faq-q h3 {
                font-size: 0.95rem;
            }
        }

/* roulang page: article */
:root {
            --bg-dark: #0a0e17;
            --bg-body: #0a0e17;
            --bg-card: #121826;
            --bg-deep: #080b12;
            --bg-light: #1a2233;
            --primary: #00e5ff;
            --secondary: #ff2d78;
            --accent: #7b61ff;
            --text-main: #edf2f9;
            --text-body: #b8c2d4;
            --text-muted: #7b8499;
            --border: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.14);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 16px 50px rgba(0, 229, 255, 0.12);
            --transition: all 0.3s ease;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

        a:hover {
            color: #59efff;
            text-decoration: none;
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .text-neon {
            color: var(--primary) !important;
        }

        .text-pink {
            color: var(--secondary) !important;
        }

        .bg-neon {
            background: var(--primary);
        }

        .section-padding {
            padding: 90px 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.22);
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(28px, 3.2vw, 38px);
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 40px;
            line-height: 1.8;
        }

        .btn-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 12px 28px;
            font-weight: 700;
            font-size: 15px;
            transition: var(--transition);
            box-shadow: 0 4px 24px rgba(0, 229, 255, 0.25);
            cursor: pointer;
        }

        .btn-neon:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 36px rgba(0, 229, 255, 0.4);
            color: #fff;
        }

        .btn-neon:active {
            transform: translateY(-1px) scale(0.98);
        }

        .btn-outline-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: 50px;
            padding: 10px 26px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
        }

        .btn-outline-neon:hover {
            background: rgba(0, 229, 255, 0.1);
            color: var(--primary);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.2);
            transform: translateY(-2px);
        }

        .btn-outline-neon:focus-visible,
        .btn-neon:focus-visible {
            outline: 3px solid rgba(0, 229, 255, 0.5);
            outline-offset: 3px;
        }

        .badge-cat {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.15), rgba(123, 97, 255, 0.15));
            color: var(--primary);
            border: 1px solid rgba(0, 229, 255, 0.2);
            letter-spacing: 0.5px;
        }

        .card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: var(--transition);
            color: var(--text-body);
        }

        .card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.25);
            box-shadow: var(--shadow-hover);
        }

        .site-header {
            background: rgba(8, 11, 18, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .site-header .navbar {
            padding: 14px 0;
            min-height: 72px;
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 22px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.5px;
        }

        .navbar-brand i {
            color: var(--primary);
            font-size: 24px;
            filter: drop-shadow(0 0 12px rgba(0, 229, 255, 0.6));
        }

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

        .navbar-nav .nav-link {
            color: var(--text-body);
            font-weight: 500;
            font-size: 15px;
            padding: 8px 18px;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }

        .navbar-nav .nav-link:hover {
            color: var(--primary);
            background: rgba(0, 229, 255, 0.06);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 700;
            background: rgba(0, 229, 255, 0.08);
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 28px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.8);
        }

        .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 10px;
            color: var(--text-main);
            padding: 8px 12px;
            background: rgba(255, 255, 255, 0.04);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.3);
        }

        .navbar-toggler i {
            font-size: 20px;
        }

        .article-banner {
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            padding: 110px 0 80px;
            position: relative;
            border-bottom: 1px solid var(--border);
        }

        .article-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 11, 18, 0.85) 0%, rgba(8, 11, 18, 0.75) 50%, rgba(10, 14, 23, 0.95) 100%);
            z-index: 1;
        }

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

        .article-breadcrumb {
            margin-bottom: 32px;
        }

        .article-breadcrumb .breadcrumb {
            margin-bottom: 0;
            background: rgba(18, 24, 38, 0.7);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 8px 24px;
            display: inline-flex;
            backdrop-filter: blur(10px);
        }

        .article-breadcrumb .breadcrumb-item {
            font-size: 14px;
            color: var(--text-muted);
        }

        .article-breadcrumb .breadcrumb-item a {
            color: var(--text-muted);
            transition: var(--transition);
        }

        .article-breadcrumb .breadcrumb-item a:hover {
            color: var(--primary);
        }

        .article-breadcrumb .breadcrumb-item.active {
            color: var(--primary);
        }

        .article-breadcrumb .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-muted);
            content: "›";
            font-size: 16px;
            line-height: 1;
            padding-right: 12px;
            padding-left: 8px;
        }

        .article-title-wrap {
            max-width: 860px;
        }

        .article-title-wrap .badge-cat {
            margin-bottom: 16px;
            font-size: 13px;
            padding: 6px 18px;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.2), rgba(255, 45, 120, 0.2));
            border-color: rgba(0, 229, 255, 0.3);
            color: var(--text-main);
        }

        .article-title-wrap h1 {
            font-size: clamp(26px, 3.6vw, 42px);
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.35;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.6);
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: var(--text-muted);
        }

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

        .article-meta i {
            color: var(--primary);
        }

        .article-main {
            padding: 70px 0 60px;
            position: relative;
        }

        .article-body-wrap {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: clamp(24px, 4vw, 48px);
            box-shadow: var(--shadow);
            position: relative;
        }

        .article-body-wrap::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
            border-radius: 20px 20px 0 0;
        }

        .article-body {
            font-size: 16px;
            line-height: 2;
            color: var(--text-body);
        }

        .article-body h2,
        .article-body h3,
        .article-body h4 {
            color: var(--text-main);
            margin-top: 2.2rem;
            margin-bottom: 1rem;
            font-weight: 700;
            line-height: 1.4;
        }

        .article-body h2 {
            font-size: 24px;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
            border-radius: 0 8px 8px 0;
            background: linear-gradient(90deg, rgba(0, 229, 255, 0.08), transparent);
        }

        .article-body h3 {
            font-size: 20px;
        }

        .article-body p {
            margin-bottom: 1.6rem;
        }

        .article-body img {
            border-radius: 14px;
            margin: 24px 0;
            box-shadow: var(--shadow);
            width: 100%;
            object-fit: cover;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(0, 229, 255, 0.07);
            padding: 18px 24px;
            border-radius: 0 14px 14px 0;
            margin: 28px 0;
            color: var(--text-main);
            font-style: normal;
        }

        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.6rem;
            margin-bottom: 1.6rem;
        }

        .article-body li {
            margin-bottom: 8px;
        }

        .article-body ul li::marker {
            color: var(--primary);
        }

        .article-body a {
            color: var(--primary);
            font-weight: 500;
            border-bottom: 1px solid rgba(0, 229, 255, 0.3);
        }

        .article-body a:hover {
            background: rgba(0, 229, 255, 0.08);
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
        }

        .article-body table th,
        .article-body table td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }

        .article-body table th {
            background: var(--bg-light);
            color: var(--text-main);
            font-weight: 600;
        }

        .article-body code {
            background: rgba(0, 229, 255, 0.1);
            color: var(--primary);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
        }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }

        .article-not-found i {
            font-size: 56px;
            color: var(--primary);
            margin-bottom: 20px;
            display: inline-block;
            animation: pulseGlow 2s infinite;
        }

        @keyframes pulseGlow {
            0%,
            100% {
                filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.4));
            }
            50% {
                filter: drop-shadow(0 0 28px rgba(0, 229, 255, 0.8));
            }
        }

        .article-not-found h2 {
            font-size: 28px;
            color: var(--text-main);
            margin-bottom: 14px;
            font-weight: 800;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 28px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }

        .article-footer-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 28px;
            margin-top: 32px;
            border-top: 1px solid var(--border);
            align-items: center;
            justify-content: space-between;
        }

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

        .article-tags .tag-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-right: 4px;
            font-weight: 600;
        }

        .article-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-body);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 5px 16px;
            transition: var(--transition);
        }

        .article-tags .tag:hover {
            color: var(--primary);
            border-color: rgba(0, 229, 255, 0.3);
            background: rgba(0, 229, 255, 0.06);
        }

        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            margin-bottom: 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .sidebar-card:hover {
            border-color: rgba(0, 229, 255, 0.2);
        }

        .sidebar-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
        }

        .sidebar-title i {
            color: var(--primary);
            font-size: 16px;
        }

        .sidebar-entrance .entrance-img {
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
            position: relative;
        }

        .sidebar-entrance .entrance-img img {
            width: 100%;
            height: 120px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .sidebar-entrance:hover .entrance-img img {
            transform: scale(1.05);
        }

        .sidebar-entrance p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 18px;
            line-height: 1.8;
        }

        .sidebar-list .list-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .sidebar-list .list-item:hover {
            padding-left: 6px;
        }

        .sidebar-list .list-item .item-icon {
            color: var(--primary);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .sidebar-list .list-item .item-title {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            transition: var(--transition);
        }

        .sidebar-list .list-item:hover .item-title {
            color: var(--primary);
        }

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

        .sidebar-tags .tag {
            font-size: 12px;
            color: var(--text-body);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 4px 12px;
            transition: var(--transition);
        }

        .sidebar-tags .tag:hover {
            color: var(--primary);
            border-color: rgba(0, 229, 255, 0.3);
            background: rgba(0, 229, 255, 0.06);
        }

        .related-section {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 80px 0;
        }

        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: var(--shadow-hover);
        }

        .related-card .related-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

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

        .related-card:hover .related-img img {
            transform: scale(1.06);
        }

        .related-card .related-img .related-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            background: rgba(8, 11, 18, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: 50px;
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
        }

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

        .related-card .related-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .related-card .related-title a {
            color: inherit;
        }

        .related-card .related-title a:hover {
            color: var(--primary);
        }

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

        .category-entry-section {
            padding: 80px 0;
        }

        .category-entry-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            height: 100%;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
            display: block;
        }

        .category-entry-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .category-entry-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 229, 255, 0.25);
            box-shadow: var(--shadow-hover);
        }

        .category-entry-card:hover::before {
            opacity: 1;
        }

        .category-entry-card .entry-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 18px;
            transition: var(--transition);
        }

        .category-entry-card:hover .entry-icon {
            background: rgba(0, 229, 255, 0.18);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.15);
        }

        .category-entry-card .entry-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .category-entry-card .entry-text {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.7;
        }

        .category-entry-card .entry-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

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

        .category-entry-card:hover .entry-link i {
            transform: translateX(4px);
        }

        .cta-section {
            padding: 80px 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 11, 18, 0.95), rgba(10, 14, 23, 0.82));
            z-index: 1;
        }

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

        .cta-inner {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: clamp(28px, 3.6vw, 38px);
            color: var(--text-main);
            font-weight: 800;
            margin-bottom: 18px;
            line-height: 1.3;
        }

        .cta-inner p {
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

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

        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            padding: 60px 0 30px;
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand i {
            color: var(--primary);
            filter: drop-shadow(0 0 12px rgba(0, 229, 255, 0.5));
        }

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

        .footer-title {
            font-size: 16px;
            color: var(--text-main);
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 8px;
        }

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

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

        .footer-links li {
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .footer-links a {
            color: var(--text-muted);
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border);
            margin-top: 40px;
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .pagination-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            margin-top: 32px;
        }

        .pagination-nav .p-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-body);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 8px 20px;
            transition: var(--transition);
        }

        .pagination-nav .p-link:hover {
            color: var(--primary);
            border-color: rgba(0, 229, 255, 0.3);
            background: rgba(0, 229, 255, 0.05);
        }

        .pagination-nav .p-link i {
            font-size: 13px;
        }

        @media (max-width: 1024px) {
            .section-padding {
                padding: 70px 0;
            }
            .article-banner {
                padding: 80px 0 60px;
                background-attachment: scroll;
            }
            .cta-section {
                padding: 60px 0;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-padding {
                padding: 55px 0;
            }
            .navbar-collapse {
                background: rgba(8, 11, 18, 0.98);
                border: 1px solid var(--border);
                border-radius: 14px;
                padding: 16px;
                margin-top: 12px;
                box-shadow: var(--shadow);
            }
            .navbar-nav .nav-link {
                padding: 10px 16px;
                border-radius: 8px;
            }
            .navbar-nav .nav-link.active::after {
                width: 20px;
            }
            .navbar-nav .btn-neon {
                margin-top: 12px;
                width: 100%;
            }
            .article-banner {
                padding: 60px 0 40px;
            }
            .article-breadcrumb .breadcrumb {
                padding: 6px 16px;
                font-size: 12px;
            }
            .article-title-wrap h1 {
                font-size: 26px;
            }
            .article-meta {
                gap: 14px;
                font-size: 13px;
            }
            .article-main {
                padding: 45px 0 40px;
            }
            .article-body-wrap {
                padding: 24px 20px;
                border-radius: 16px;
            }
            .article-body {
                font-size: 15px;
                line-height: 1.9;
            }
            .related-section {
                padding: 55px 0;
            }
            .category-entry-section {
                padding: 55px 0;
            }
            .cta-section {
                padding: 50px 0;
            }
            .cta-buttons .btn-neon,
            .cta-buttons .btn-outline-neon {
                width: 100%;
            }
            .site-footer {
                padding: 45px 0 25px;
            }
            .footer-brand {
                font-size: 20px;
            }
            .sidebar-card {
                margin-top: 12px;
            }
        }

        @media (max-width: 520px) {
            .article-title-wrap h1 {
                font-size: 22px;
            }
            .article-meta {
                flex-direction: column;
                gap: 8px;
            }
            .article-body-wrap {
                padding: 20px 16px;
            }
            .article-body h2 {
                font-size: 20px;
                padding-left: 12px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .related-card .related-img {
                height: 140px;
            }
            .category-entry-card {
                padding: 24px 20px;
            }
            .cta-inner h2 {
                font-size: 24px;
            }
            .btn-neon {
                padding: 11px 22px;
                font-size: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #00e0ff;
            --primary-glow: rgba(0, 224, 255, 0.45);
            --secondary: #b537f2;
            --secondary-glow: rgba(181, 55, 242, 0.4);
            --bg-dark: #0b0d17;
            --bg-deep: #080a12;
            --bg-card: #141827;
            --bg-card-hover: #1b2035;
            --text-main: #eaf2ff;
            --text-muted: #9aa7bd;
            --border-dark: rgba(255, 255, 255, 0.08);
            --border-neon: rgba(0, 224, 255, 0.35);
            --radius-lg: 22px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 30px rgba(0, 224, 255, 0.15);
            --spacing-section: 100px;
            --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #70efff;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Header Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(8, 10, 18, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-dark);
        }
        .site-header .navbar {
            padding: 14px 0;
        }
        .navbar-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.02em;
        }
        .navbar-brand i {
            color: var(--primary);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 8px var(--primary-glow));
        }
        .navbar-brand:hover {
            color: var(--primary);
        }
        .navbar-nav .nav-link {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 18px;
            border-radius: 30px;
            position: relative;
            transition: all 0.3s ease;
        }
        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            box-shadow: 0 0 10px var(--primary-glow);
            transition: width 0.35s ease;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-main);
        }
        .navbar-nav .nav-link:hover::after {
            width: 60%;
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(0, 224, 255, 0.08);
            border: 1px solid rgba(0, 224, 255, 0.25);
        }
        .navbar-nav .nav-link.active::after {
            width: 60%;
            background: var(--primary);
        }
        .btn-neon {
            background: linear-gradient(135deg, rgba(0, 224, 255, 0.15), rgba(181, 55, 242, 0.15));
            border: 1px solid var(--border-neon);
            color: var(--primary);
            border-radius: 50px;
            padding: 10px 24px;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            transition: all 0.35s ease;
            white-space: nowrap;
            box-shadow: 0 0 18px rgba(0, 224, 255, 0.08);
        }
        .btn-neon:hover {
            background: linear-gradient(135deg, rgba(0, 224, 255, 0.3), rgba(181, 55, 242, 0.3));
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 224, 255, 0.2);
            border-color: rgba(0, 224, 255, 0.7);
        }
        .navbar-toggler {
            border: 1px solid var(--border-neon);
            color: var(--primary);
            border-radius: 10px;
            padding: 6px 10px;
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(0, 224, 255, 0.12);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 110px 0 90px;
            background: linear-gradient(135deg, rgba(8, 10, 18, 0.75), rgba(11, 13, 23, 0.92)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border-dark);
        }
        .page-hero::after {
            content: "";
            position: absolute;
            inset: auto 0 0 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
        }
        .page-hero .breadcrumb {
            margin-bottom: 18px;
            font-size: 0.85rem;
            background: rgba(20, 24, 39, 0.6);
            border: 1px solid var(--border-dark);
            border-radius: 50px;
            padding: 8px 20px;
            display: inline-flex;
            backdrop-filter: blur(8px);
        }
        .page-hero .breadcrumb a {
            color: var(--text-muted);
        }
        .page-hero .breadcrumb a:hover {
            color: var(--primary);
        }
        .page-hero .breadcrumb-item.active {
            color: var(--primary);
        }
        .page-hero .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-muted);
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 900;
            letter-spacing: 0.02em;
            margin-bottom: 18px;
            background: linear-gradient(135deg, #fff 0%, var(--primary) 60%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero .lead {
            color: var(--text-muted);
            font-size: 1.15rem;
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 224, 255, 0.1);
            border: 1px solid rgba(0, 224, 255, 0.3);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 40px;
            letter-spacing: 0.06em;
            margin-bottom: 20px;
        }
        .page-hero .hero-badge i {
            font-size: 0.85rem;
        }

        /* ===== Section base ===== */
        .section-space {
            padding: var(--spacing-section) 0;
        }
        .section-title-wrap {
            margin-bottom: 50px;
        }
        .section-title-wrap .section-subtitle {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            background: rgba(0, 224, 255, 0.08);
            border: 1px solid rgba(0, 224, 255, 0.2);
            padding: 6px 18px;
            border-radius: 40px;
            margin-bottom: 14px;
        }
        .section-title-wrap h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-title-wrap p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 560px;
        }
        .section-title-wrap.text-center p {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Entry Cards ===== */
        .entry-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: 36px 28px 30px;
            height: 100%;
            position: relative;
            overflow: hidden;
            transition: all 0.4s ease;
        }
        .entry-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity 0.4s ease;
        }
        .entry-card:hover {
            border-color: var(--border-neon);
            background: var(--bg-card-hover);
            transform: translateY(-8px);
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }
        .entry-card:hover::before {
            opacity: 1;
        }
        .entry-card .card-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: linear-gradient(145deg, rgba(0, 224, 255, 0.15), rgba(181, 55, 242, 0.15));
            border: 1px solid var(--border-neon);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.7rem;
            color: var(--primary);
            margin-bottom: 22px;
            box-shadow: 0 0 24px rgba(0, 224, 255, 0.1);
            transition: transform 0.4s ease;
        }
        .entry-card:hover .card-icon {
            transform: scale(1.08) rotate(-3deg);
        }
        .entry-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .entry-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .entry-card .entry-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.88rem;
        }
        .entry-card .entry-link i {
            transition: transform 0.3s ease;
        }
        .entry-card .entry-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Steps ===== */
        .steps-section {
            background: linear-gradient(135deg, var(--bg-deep), #0f1220);
            position: relative;
        }
        .steps-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            max-width: 900px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 224, 255, 0.4), rgba(181, 55, 242, 0.4), transparent);
        }
        .step-item {
            position: relative;
            padding: 30px 20px;
            text-align: center;
            background: rgba(20, 24, 39, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            height: 100%;
            transition: all 0.35s ease;
        }
        .step-item:hover {
            background: rgba(20, 24, 39, 0.9);
            border-color: var(--border-neon);
            transform: translateY(-6px);
        }
        .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(145deg, var(--primary), var(--secondary));
            color: #0b0d17;
            font-weight: 900;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 0 26px var(--primary-glow);
        }
        .step-item h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== Feature cards ===== */
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-neon);
            box-shadow: var(--shadow-card);
        }
        .feature-card .feature-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .feature-card .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .feature-card:hover .feature-img img {
            transform: scale(1.05);
        }
        .feature-card .feature-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 13, 23, 0.7), transparent);
        }
        .feature-card .feature-body {
            padding: 22px 24px 26px;
        }
        .feature-card .feature-body .badge {
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(0, 224, 255, 0.1);
            color: var(--primary);
            border: 1px solid rgba(0, 224, 255, 0.2);
            border-radius: 40px;
            padding: 4px 14px;
            margin-bottom: 12px;
        }
        .feature-card .feature-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .feature-card .feature-body p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ===== Version compare ===== */
        .version-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: 34px 30px;
            height: 100%;
            position: relative;
            transition: all 0.4s ease;
        }
        .version-card:hover {
            border-color: var(--border-neon);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
        }
        .version-card.featured {
            border-color: var(--border-neon);
            box-shadow: 0 0 35px rgba(0, 224, 255, 0.12);
        }
        .version-card .version-tag {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #0b0d17;
            font-size: 0.75rem;
            font-weight: 800;
            padding: 4px 18px;
            border-radius: 40px;
            white-space: nowrap;
        }
        .version-card .version-icon {
            font-size: 2.6rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: block;
        }
        .version-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .version-card .version-desc {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.65;
            margin-bottom: 20px;
        }
        .version-card ul {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }
        .version-card ul li {
            color: var(--text-muted);
            font-size: 0.85rem;
            padding: 7px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .version-card ul li:last-child {
            border-bottom: none;
        }
        .version-card ul li i {
            color: var(--primary);
            font-size: 0.7rem;
        }

        /* ===== Notice block ===== */
        .notice-block {
            background: linear-gradient(135deg, rgba(0, 224, 255, 0.06), rgba(181, 55, 242, 0.06));
            border: 1px solid rgba(0, 224, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 38px 40px;
            position: relative;
            overflow: hidden;
        }
        .notice-block::before {
            content: "\f0e7";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            right: -10px;
            bottom: -20px;
            font-size: 120px;
            opacity: 0.05;
            color: var(--primary);
        }
        .notice-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .notice-list li {
            padding: 10px 0;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }
        .notice-list li i {
            color: var(--primary);
            margin-top: 6px;
            font-size: 0.8rem;
        }
        .notice-list li strong {
            color: #fff;
            font-weight: 600;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-deep);
            position: relative;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            margin-bottom: 16px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: var(--border-neon);
        }
        .faq-item .faq-q {
            font-weight: 600;
            color: #fff;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            margin-bottom: 0;
        }
        .faq-item .faq-q i {
            color: var(--primary);
            font-size: 0.8rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item .faq-a {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.75;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: none;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item.open .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 0 0 var(--spacing-section);
        }
        .cta-block {
            background: linear-gradient(145deg, rgba(0, 224, 255, 0.1), rgba(181, 55, 242, 0.08)), var(--bg-card);
            border: 1px solid var(--border-neon);
            border-radius: 26px;
            padding: 64px 50px;
            position: relative;
            overflow: hidden;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .cta-block::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 70%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
        }
        .cta-block h2 {
            font-size: 1.9rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-block p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 500px;
            margin: 0 auto 28px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-dark);
            padding-top: 70px;
            position: relative;
        }
        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            max-width: 800px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 360px;
        }
        .footer-title {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.03em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: all 0.3s ease;
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 6px;
        }
        .footer-links li span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 0.88rem;
        }
        .text-neon {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 54px;
            padding: 22px 0 26px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
        }
        .footer-bottom p a {
            color: var(--text-muted);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            :root {
                --spacing-section: 70px;
            }
            .navbar-collapse {
                background: rgba(8, 10, 18, 0.97);
                border: 1px solid var(--border-dark);
                border-radius: 16px;
                padding: 18px;
                margin-top: 12px;
            }
            .navbar-nav .nav-link {
                padding: 12px 16px;
                border-radius: 10px;
            }
            .navbar-nav .nav-link::after {
                display: none;
            }
            .btn-neon {
                margin-top: 12px;
                width: 100%;
            }
            .page-hero {
                padding: 70px 0 60px;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .cta-block {
                padding: 44px 30px;
            }
            .notice-block {
                padding: 28px 24px;
            }
        }
        @media (max-width: 767.98px) {
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .page-hero .lead {
                font-size: 1rem;
            }
            .section-title-wrap h2 {
                font-size: 1.55rem;
            }
            .step-item {
                margin-bottom: 16px;
            }
            .footer-bottom {
                margin-top: 36px;
            }
            .footer-brand {
                font-size: 1.2rem;
            }
            .cta-block h2 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 520px) {
            :root {
                --spacing-section: 55px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-hero {
                padding: 48px 0 42px;
            }
            .page-hero h1 {
                font-size: 1.45rem;
            }
            .page-hero .lead {
                font-size: 0.9rem;
            }
            .navbar-brand {
                font-size: 1.1rem;
            }
            .entry-card {
                padding: 26px 20px;
            }
            .version-card {
                padding: 26px 20px;
            }
            .version-card .version-icon {
                font-size: 2rem;
            }
            .notice-block {
                padding: 22px 18px;
            }
            .notice-list li {
                font-size: 0.85rem;
            }
            .faq-item {
                padding: 18px 18px;
            }
            .cta-block {
                padding: 36px 20px;
                border-radius: 18px;
            }
            .cta-block h2 {
                font-size: 1.2rem;
            }
        }

/* roulang page: category3 */
/* ========== 设计变量 ========== */
        :root {
            --bg-dark: #0a0e17;
            --bg-deep: #070b12;
            --bg-card: rgba(255, 255, 255, 0.03);
            --bg-card-solid: #111b2c;
            --bg-card-hover: #141f33;
            --primary: #00e5ff;
            --secondary: #ff2d78;
            --accent: #00ff9d;
            --warning: #ffc861;
            --text: #e6ecf5;
            --text-muted: #8b94a9;
            --text-weak: #5d6a82;
            --border: rgba(255, 255, 255, 0.07);
            --border-light: rgba(255, 255, 255, 0.14);
            --border-neon: rgba(0, 229, 255, 0.45);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.45);
            --shadow-neon: 0 0 32px rgba(0, 229, 255, 0.12);
            --shadow-pink: 0 0 24px rgba(255, 45, 120, 0.12);
            --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            --font-main: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --section-space: 96px;
        }

        /* ========== 基础 Reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background-color: var(--bg-dark);
            color: var(--text);
            line-height: 1.75;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: #fff;
        }
        button,
        input {
            font-family: inherit;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.35;
            color: #fff;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 0;
        }
        .container {
            max-width: 1200px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(10, 14, 23, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
        }
        .site-header::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
            opacity: 0.85;
            pointer-events: none;
        }
        .navbar {
            padding: 14px 0;
        }
        .navbar-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.5px;
        }
        .navbar-brand i {
            color: var(--primary);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 10px rgba(0, 229, 255, 0.7));
        }
        .navbar-brand:hover {
            color: #fff;
        }
        .navbar-toggler {
            border: 1px solid var(--border-light);
            color: var(--text);
            border-radius: 10px;
            padding: 6px 12px;
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.2);
            outline: none;
        }
        .navbar-toggler i {
            font-size: 1.2rem;
            color: var(--text);
        }
        .navbar-nav .nav-link {
            color: var(--text-muted);
            font-weight: 500;
            padding: 8px 18px !important;
            border-radius: 30px;
            position: relative;
            transition: all var(--transition);
            font-size: 0.95rem;
        }
        .navbar-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
            text-shadow: 0 0 14px rgba(0, 229, 255, 0.35);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(0, 229, 255, 0.08);
            box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.25);
            text-shadow: 0 0 16px rgba(0, 229, 255, 0.5);
        }
        .btn-neon {
            background: linear-gradient(135deg, var(--primary), #00b4d8);
            color: #001d29;
            font-weight: 700;
            border: none;
            border-radius: 30px;
            padding: 10px 24px;
            font-size: 0.92rem;
            transition: all var(--transition);
            box-shadow: 0 4px 18px rgba(0, 229, 255, 0.25);
            display: inline-flex;
            align-items: center;
        }
        .btn-neon:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(0, 229, 255, 0.45);
            color: #001d29;
            background: linear-gradient(135deg, #66f0ff, var(--primary));
        }
        .btn-neon:active {
            transform: translateY(0) scale(0.97);
        }
        .btn-neon:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(0, 229, 255, 0.25);
        }

        /* ========== 页面 Hero ========== */
        .page-hero {
            position: relative;
            padding: 130px 0 90px;
            background: linear-gradient(135deg, rgba(7, 11, 18, 0.93) 0%, rgba(10, 14, 23, 0.8) 50%, rgba(20, 12, 30, 0.85) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(255, 45, 120, 0.13) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .breadcrumb-nav {
            margin-bottom: 22px;
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            margin-bottom: 0;
            background: transparent;
            padding: 0;
        }
        .breadcrumb-item a {
            color: var(--text-muted);
            font-weight: 500;
        }
        .breadcrumb-item a:hover {
            color: var(--primary);
        }
        .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-weak);
        }
        .breadcrumb-item.active {
            color: var(--primary);
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: 1px;
            position: relative;
            z-index: 2;
            margin-bottom: 16px;
            background: linear-gradient(120deg, #fff, #a0f2ff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-lead {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 620px;
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: 30px;
            padding: 6px 18px;
            font-size: 0.82rem;
            color: var(--primary);
            font-weight: 600;
            position: relative;
            z-index: 2;
            margin-bottom: 18px;
        }
        .hero-badge i {
            font-size: 0.9rem;
        }

        /* ========== Section 通用 ========== */
        .section {
            padding: var(--section-space) 0;
            position: relative;
        }
        .section-alt {
            background: var(--bg-deep);
        }
        .section-head {
            margin-bottom: 48px;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: 30px;
            padding: 5px 18px;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 10px;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 1.02rem;
            max-width: 560px;
        }
        .section-head.text-center p {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== 特色公告卡片 ========== */
        .feature-card {
            background: var(--bg-card-solid);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
        }
        .feature-card:hover {
            transform: translateY(-8px);
            border-color: var(--border-neon);
            box-shadow: var(--shadow-card), var(--shadow-neon);
        }
        .feature-card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }
        .feature-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .feature-card:hover .feature-card-img img {
            transform: scale(1.06);
        }
        .feature-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(10, 14, 23, 0.7) 100%);
        }
        .badge-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(0, 229, 255, 0.9);
            color: #001d29;
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 30px;
            box-shadow: 0 4px 14px rgba(0, 229, 255, 0.35);
        }
        .badge-tag.hot {
            background: rgba(255, 45, 120, 0.92);
            color: #fff;
            box-shadow: 0 4px 14px rgba(255, 45, 120, 0.35);
        }
        .badge-tag.safe {
            background: rgba(0, 255, 157, 0.9);
            color: #00281a;
            box-shadow: 0 4px 14px rgba(0, 255, 157, 0.3);
        }
        .feature-card-body {
            padding: 26px 24px 28px;
        }
        .card-date {
            display: inline-flex;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .card-date i {
            color: var(--primary);
            margin-right: 4px;
        }
        .feature-card-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            transition: color var(--transition);
        }
        .feature-card:hover .feature-card-body h3 {
            color: var(--primary);
        }
        .feature-card-body p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            transition: all var(--transition);
        }
        .card-link:hover {
            gap: 4px;
            color: #fff;
        }

        /* ========== 资讯列表卡片 ========== */
        .news-card {
            background: var(--bg-card-solid);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            height: 100%;
            transition: all var(--transition);
        }
        .news-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-neon);
            box-shadow: var(--shadow-card), var(--shadow-neon);
        }
        .news-card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .news-card:hover .news-card-img img {
            transform: scale(1.05);
        }
        .news-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(10, 14, 23, 0.8);
            backdrop-filter: blur(8px);
            color: var(--primary);
            border: 1px solid rgba(0, 229, 255, 0.4);
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            z-index: 2;
        }
        .news-card-body {
            padding: 22px;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .news-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .news-meta i {
            color: var(--primary);
            font-size: 0.88rem;
        }
        .news-card-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-body p {
            color: var(--text-muted);
            font-size: 0.88rem;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-link {
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            transition: all var(--transition);
        }
        .news-link:hover {
            color: #fff;
            gap: 4px;
        }

        /* ========== 标签云 ========== */
        .tag-section {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            max-width: 820px;
            margin: 0 auto;
        }
        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 50px;
            background: var(--bg-card-solid);
            border: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
            cursor: pointer;
        }
        .tag-pill i {
            color: var(--secondary);
            font-size: 0.85rem;
            transition: all var(--transition);
        }
        .tag-pill:hover {
            transform: translateY(-4px);
            background: var(--bg-card-hover);
            border-color: var(--border-neon);
            color: var(--primary);
            box-shadow: var(--shadow-neon);
        }
        .tag-pill:hover i {
            color: var(--primary);
        }

        /* ========== 时间线 ========== */
        .timeline {
            position: relative;
            max-width: 860px;
            margin: 0 auto;
            padding: 20px 0;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, transparent, rgba(0, 229, 255, 0.3), rgba(255, 45, 120, 0.3), transparent);
            transform: translateX(-50%);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 40px;
            padding-left: calc(50% + 36px);
            width: 50%;
        }
        .timeline-item:nth-child(even) {
            padding-left: 0;
            padding-right: calc(50% + 36px);
            text-align: right;
        }
        .timeline-dot {
            position: absolute;
            top: 8px;
            left: calc(50% - 10px);
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--bg-dark);
            border: 3px solid var(--primary);
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.5);
            z-index: 2;
        }
        .timeline-item:nth-child(even) .timeline-dot {
            left: auto;
            right: calc(50% - 10px);
        }
        .timeline-content {
            background: var(--bg-card-solid);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: all var(--transition);
            position: relative;
        }
        .timeline-content:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
        }
        .timeline-date {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--primary);
            background: rgba(0, 229, 255, 0.08);
            border-radius: 20px;
            padding: 2px 14px;
            margin-bottom: 8px;
        }
        .timeline-content h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .timeline-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* ========== 数据统计 ========== */
        .stat-section {
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.04), rgba(255, 45, 120, 0.04));
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .stat-box {
            background: var(--bg-card-solid);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            text-align: center;
            transition: all var(--transition);
            height: 100%;
        }
        .stat-box:hover {
            transform: translateY(-6px);
            border-color: var(--border-neon);
            box-shadow: var(--shadow-neon);
        }
        .stat-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.4rem;
            background: rgba(0, 229, 255, 0.1);
            color: var(--primary);
            box-shadow: 0 0 0 1px rgba(0, 229, 255, 0.2);
        }
        .stat-box:nth-child(2) .stat-icon {
            background: rgba(255, 45, 120, 0.1);
            color: var(--secondary);
            box-shadow: 0 0 0 1px rgba(255, 45, 120, 0.25);
        }
        .stat-box:nth-child(3) .stat-icon {
            background: rgba(0, 255, 157, 0.1);
            color: var(--accent);
            box-shadow: 0 0 0 1px rgba(0, 255, 157, 0.25);
        }
        .stat-box:nth-child(4) .stat-icon {
            background: rgba(255, 200, 97, 0.1);
            color: var(--warning);
            box-shadow: 0 0 0 1px rgba(255, 200, 97, 0.25);
        }
        .stat-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-num span {
            font-size: 1.6rem;
            color: var(--primary);
            margin-left: 2px;
        }
        .stat-label {
            color: var(--text-muted);
            font-size: 0.92rem;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-deep);
        }
        .accordion {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--bg-card-solid);
            border: 1px solid var(--border) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
        }
        .accordion-item:first-of-type,
        .accordion-item:last-of-type {
            border-radius: var(--radius-md) !important;
        }
        .accordion-button {
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 22px 26px;
            transition: all var(--transition);
        }
        .accordion-button:not(.collapsed) {
            background: rgba(0, 229, 255, 0.05);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
            border-color: var(--border-neon);
        }
        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2300e5ff' viewBox='0 0 16 16'%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");
        }
        .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2300e5ff' viewBox='0 0 16 16'%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");
            transform: rotate(180deg);
        }
        .accordion-body {
            padding: 0 26px 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 72px 0;
        }
        .cta-box {
            position: relative;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.12) 0%, rgba(255, 45, 120, 0.08) 100%), var(--bg-card-solid);
            border: 1px solid var(--border-neon);
            border-radius: 28px;
            padding: 60px 48px;
            text-align: center;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.2) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(255, 45, 120, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }
        .cta-box p {
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 2;
            font-size: 1rem;
        }
        .cta-box .btn-neon {
            position: relative;
            z-index: 2;
            font-size: 1rem;
            padding: 14px 36px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            padding: 72px 0 32px;
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand i {
            color: var(--primary);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 10px rgba(0, 229, 255, 0.6));
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-links li {
            color: var(--text-muted);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            margin-top: 52px;
            padding-top: 28px;
            text-align: center;
            color: var(--text-weak);
            font-size: 0.85rem;
        }
        .footer-bottom p {
            margin-bottom: 0;
        }
        .text-neon {
            color: var(--primary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            :root {
                --section-space: 76px;
            }
            .page-hero {
                padding: 100px 0 72px;
            }
            .page-hero h1 {
                font-size: 2.5rem;
            }
            .section-head h2 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: 60px;
            }
            .page-hero {
                padding: 84px 0 56px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .hero-lead {
                font-size: 1rem;
            }
            .navbar-collapse {
                background: rgba(10, 14, 23, 0.98);
                border-radius: 16px;
                padding: 16px;
                margin-top: 14px;
                border: 1px solid var(--border);
                box-shadow: var(--shadow-card);
            }
            .navbar-nav .nav-link {
                padding: 10px 18px !important;
            }
            .btn-neon.ms-lg-3 {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
                justify-content: center;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .section-head p {
                font-size: 0.95rem;
            }
            .cta-box {
                padding: 44px 24px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .timeline::before {
                left: 16px;
            }
            .timeline-item,
            .timeline-item:nth-child(even) {
                width: 100%;
                padding-left: 48px;
                padding-right: 0;
                text-align: left;
            }
            .timeline-dot,
            .timeline-item:nth-child(even) .timeline-dot {
                left: 7px;
                right: auto;
            }
            .timeline-content {
                padding: 18px;
            }
            .stat-num {
                font-size: 2.2rem;
            }
            .footer-brand {
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.65rem;
            }
            .hero-lead {
                font-size: 0.92rem;
            }
            .page-hero {
                padding: 72px 0 44px;
            }
            .section-head h2 {
                font-size: 1.5rem;
            }
            .feature-card-body {
                padding: 20px;
            }
            .news-card-body {
                padding: 18px;
            }
            .tag-pill {
                padding: 8px 16px;
                font-size: 0.82rem;
            }
            .ctl-box {
                padding: 36px 18px;
            }
            .btn-neon {
                padding: 10px 18px;
                font-size: 0.88rem;
            }
            .footer-links a,
            .footer-links li {
                font-size: 0.85rem;
            }
        }