/* roulang page: index */
:root {
            --bg-deep: #06060f;
            --bg-primary: #0a0b18;
            --bg-card: #111124;
            --bg-card-hover: #181835;
            --bg-elevated: #151530;
            --bg-nav: rgba(8, 8, 24, 0.92);
            --neon-cyan: #00d4ff;
            --neon-cyan-glow: rgba(0, 212, 255, 0.45);
            --neon-cyan-soft: rgba(0, 212, 255, 0.12);
            --neon-magenta: #ff3366;
            --neon-magenta-glow: rgba(255, 51, 102, 0.45);
            --neon-magenta-soft: rgba(255, 51, 102, 0.10);
            --neon-gold: #ffb347;
            --neon-gold-soft: rgba(255, 179, 71, 0.12);
            --text-primary: #e8e9f2;
            --text-secondary: #b0b3c5;
            --text-muted: #7a7d94;
            --text-on-dark: #e8e9f2;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-glow: rgba(0, 212, 255, 0.25);
            --border-card: rgba(255, 255, 255, 0.07);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-glow-cyan: 0 0 28px rgba(0, 212, 255, 0.28), 0 0 60px rgba(0, 212, 255, 0.08);
            --shadow-glow-magenta: 0 0 28px rgba(255, 51, 102, 0.28), 0 0 60px rgba(255, 51, 102, 0.08);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 32px rgba(0, 212, 255, 0.10);
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            --font-body: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1240px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-deep);
            min-height: 100vh;
            overflow-x: hidden;
            background-image:
                radial-gradient(ellipse at 50% 0%, rgba(0, 212, 255, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, rgba(255, 51, 102, 0.03) 0%, transparent 50%),
                radial-gradient(ellipse at 20% 70%, rgba(0, 212, 255, 0.03) 0%, transparent 50%);
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            cursor: pointer;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--bg-nav);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-smooth), border-color var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(6, 6, 20, 0.96);
            border-bottom-color: rgba(0, 212, 255, 0.18);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            position: relative;
            transition: color var(--transition-fast);
        }

        .logo-link:hover {
            color: var(--neon-cyan);
            text-shadow: 0 0 24px var(--neon-cyan-glow);
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--neon-cyan) 0%, #0099cc 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: 0 0 20px var(--neon-cyan-glow);
            flex-shrink: 0;
        }

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

        .nav-links a {
            position: relative;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-links a:hover {
            color: var(--neon-cyan);
            background: var(--neon-cyan-soft);
            text-shadow: 0 0 14px var(--neon-cyan-glow);
        }

        .nav-links a.active {
            color: var(--neon-cyan);
            background: var(--neon-cyan-soft);
            font-weight: 600;
            text-shadow: 0 0 18px var(--neon-cyan-glow);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 28px;
            height: 3px;
            border-radius: 2px;
            background: var(--neon-cyan);
            box-shadow: 0 0 10px var(--neon-cyan-glow);
        }

        .nav-cta-btn {
            padding: 10px 24px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
            font-size: 0.9rem !important;
            background: linear-gradient(135deg, var(--neon-magenta) 0%, #e02d55 100%) !important;
            color: #fff !important;
            box-shadow: 0 0 22px var(--neon-magenta-glow);
            transition: all var(--transition-smooth) !important;
            letter-spacing: 0.02em !important;
            margin-left: 8px;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 0 36px var(--neon-magenta-glow), 0 6px 24px rgba(255, 51, 102, 0.35) !important;
            transform: translateY(-2px) !important;
            color: #fff !important;
            background: linear-gradient(135deg, #ff4d7a 0%, #e02d55 100%) !important;
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            background: transparent;
            border: none;
        }

        .mobile-menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            border-radius: 2px;
            background: var(--text-primary);
            transition: all var(--transition-smooth);
        }

        .mobile-menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 20px 80px;
            background: linear-gradient(180deg, rgba(6, 6, 15, 0.55) 0%, rgba(10, 11, 24, 0.8) 60%, var(--bg-deep) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-position: center 30%;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background:
                radial-gradient(ellipse at 55% 30%, rgba(0, 212, 255, 0.10) 0%, transparent 55%),
                radial-gradient(ellipse at 30% 60%, rgba(255, 51, 102, 0.06) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 20px;
            border-radius: 50px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--neon-cyan);
            background: var(--neon-cyan-soft);
            border: 1px solid rgba(0, 212, 255, 0.2);
            margin-bottom: 28px;
            letter-spacing: 0.03em;
            animation: pulse-badge 3s ease-in-out infinite;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 10px rgba(0, 212, 255, 0.15);
            }
            50% {
                box-shadow: 0 0 26px rgba(0, 212, 255, 0.35);
            }
        }

        .hero-badge-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--neon-cyan);
            box-shadow: 0 0 10px var(--neon-cyan-glow);
            animation: blink-dot 1.6s ease-in-out infinite;
        }

        @keyframes blink-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }

        .hero-title {
            font-family: var(--font-heading);
            font-size: clamp(2.4rem, 5.5vw, 3.8rem);
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
            text-shadow: 0 0 60px rgba(0, 212, 255, 0.20);
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--neon-cyan) 0%, #80eeff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            filter: drop-shadow(0 0 18px var(--neon-cyan-glow));
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.8;
            letter-spacing: 0.02em;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            cursor: pointer;
            border: none;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--neon-cyan) 0%, #0099cc 100%);
            color: #06060f;
            box-shadow: 0 0 30px var(--neon-cyan-glow);
            font-weight: 700;
        }

        .btn-primary:hover {
            box-shadow: 0 0 48px var(--neon-cyan-glow), 0 8px 28px rgba(0, 212, 255, 0.3);
            transform: translateY(-3px);
            color: #06060f;
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(6px);
        }

        .btn-outline:hover {
            border-color: var(--neon-cyan);
            box-shadow: 0 0 24px var(--neon-cyan-glow);
            transform: translateY(-3px);
            color: var(--neon-cyan);
        }

        .btn-magenta {
            background: linear-gradient(135deg, var(--neon-magenta) 0%, #e02d55 100%);
            color: #fff;
            box-shadow: 0 0 26px var(--neon-magenta-glow);
            font-weight: 700;
        }

        .btn-magenta:hover {
            box-shadow: 0 0 44px var(--neon-magenta-glow), 0 8px 28px rgba(255, 51, 102, 0.3);
            transform: translateY(-3px);
            color: #fff;
        }

        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
            justify-content: center;
            margin-top: 52px;
        }

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

        .hero-stat-number {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.03em;
        }

        .hero-stat-number .plus {
            color: var(--neon-cyan);
            text-shadow: 0 0 14px var(--neon-cyan-glow);
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
            letter-spacing: 0.04em;
        }

        /* ========== SECTIONS COMMON ========== */
        .section {
            padding: 90px 0;
            position: relative;
        }

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

        .section-label {
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--neon-cyan);
            margin-bottom: 12px;
            display: inline-block;
            text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: clamp(1.7rem, 3.5vw, 2.5rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 44px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

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

        /* ========== FEATURES GRID ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .feature-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

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

        .feature-card-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 18px;
            flex-shrink: 0;
        }

        .feature-card-icon.cyan {
            background: var(--neon-cyan-soft);
            color: var(--neon-cyan);
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.12);
        }

        .feature-card-icon.magenta {
            background: var(--neon-magenta-soft);
            color: var(--neon-magenta);
            box-shadow: 0 0 18px rgba(255, 51, 102, 0.12);
        }

        .feature-card-icon.gold {
            background: var(--neon-gold-soft);
            color: var(--neon-gold);
            box-shadow: 0 0 18px rgba(255, 179, 71, 0.12);
        }

        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== CATEGORY ENTRY ========== */
        .category-entry-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 28px;
        }

        .category-entry-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .category-entry-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .category-entry-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-elevated);
        }

        .category-entry-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

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

        .category-entry-img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(10, 11, 24, 0.85) 100%);
            pointer-events: none;
        }

        .category-entry-body {
            padding: 24px 22px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .category-entry-body h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .category-entry-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .category-entry-link {
            align-self: flex-start;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--neon-cyan);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }

        .category-entry-link:hover {
            gap: 10px;
            text-shadow: 0 0 14px var(--neon-cyan-glow);
        }

        /* ========== NEWS LIST (CMS) ========== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 20px;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: all var(--transition-smooth);
            display: flex;
            gap: 18px;
            align-items: flex-start;
        }

        .news-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
            background: var(--bg-card-hover);
        }

        .news-card-thumb {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-elevated);
        }

        .news-card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-card-info {
            flex: 1;
            min-width: 0;
        }

        .news-card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 50px;
            background: var(--neon-cyan-soft);
            color: var(--neon-cyan);
            margin-bottom: 8px;
            letter-spacing: 0.04em;
        }

        .news-card-info h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-info .news-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }

        .news-card-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
        }

        .news-empty {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 1rem;
            grid-column: 1 / -1;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-card);
        }

        /* ========== PROCESS / TIMELINE ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta), var(--neon-cyan));
            z-index: 0;
            border-radius: 1px;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 16px;
        }

        .process-step-number {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 3px solid var(--neon-cyan);
            color: var(--neon-cyan);
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.18);
            transition: all var(--transition-smooth);
        }

        .process-step:hover .process-step-number {
            box-shadow: 0 0 36px var(--neon-cyan-glow);
            background: var(--neon-cyan);
            color: #06060f;
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== DATA SHOWCASE ========== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .data-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition-smooth);
        }

        .data-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
        }

        .data-card-number {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--neon-cyan) 0%, #fff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 6px;
        }

        .data-card-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item.open {
            border-color: var(--border-glow);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.08);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            border: none;
            letter-spacing: 0.01em;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: var(--neon-cyan-soft);
        }

        .faq-arrow {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            transition: transform var(--transition-smooth);
            color: var(--neon-cyan);
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }

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

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--bg-primary);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-xl);
            padding: 60px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            margin: 0 20px;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 30% 20%, rgba(0, 212, 255, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 70% 60%, rgba(255, 51, 102, 0.06) 0%, transparent 50%);
            pointer-events: none;
        }

        .cta-section-inner {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-primary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
            margin-top: 20px;
        }

        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 32px;
        }

        .footer-brand {
            max-width: 280px;
        }

        .footer-brand .logo-link {
            margin-bottom: 12px;
            font-size: 1.2rem;
            display: inline-flex;
        }

        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .footer-links-group h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .footer-links-group a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .footer-links-group a:hover {
            color: var(--neon-cyan);
            text-shadow: 0 0 10px var(--neon-cyan-glow);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* ========== MOBILE NAV OVERLAY ========== */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(6, 6, 15, 0.96);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            backdrop-filter: blur(16px);
        }

        .mobile-nav-overlay.active {
            display: flex;
        }

        .mobile-nav-overlay a {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-primary);
            padding: 10px 20px;
            transition: color var(--transition-fast);
        }

        .mobile-nav-overlay a:hover,
        .mobile-nav-overlay a.active {
            color: var(--neon-cyan);
            text-shadow: 0 0 18px var(--neon-cyan-glow);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .process-steps::before {
                display: none;
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-entry-grid {
                grid-template-columns: 1fr;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .hero {
                min-height: 80vh;
                padding: 100px 16px 60px;
            }
            .hero-stats-row {
                gap: 20px;
            }
            .hero-stat-number {
                font-size: 1.5rem;
            }
            .section {
                padding: 60px 0;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card-thumb {
                width: 100%;
                height: 160px;
            }
            .cta-section {
                margin: 0 12px;
                padding: 40px 20px;
                border-radius: var(--radius-lg);
            }
            .footer-inner {
                flex-direction: column;
                gap: 28px;
            }
            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .data-grid {
                grid-template-columns: 1fr;
            }
            .data-card-number {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
        }

/* roulang page: article */
:root {
            --bg-deep: #06090F;
            --bg-nav: #080C16;
            --bg-card: #FFFFFF;
            --bg-section: #F8FAFC;
            --bg-footer: #080C16;
            --text-primary: #1A1D28;
            --text-secondary: #5A6072;
            --text-light: #94A3B8;
            --text-white: #FFFFFF;
            --text-white-soft: #CBD5E1;
            --accent-neon: #FF6B35;
            --accent-neon-glow: rgba(255, 107, 53, 0.45);
            --accent-cyan: #00D4FF;
            --accent-cyan-glow: rgba(0, 212, 255, 0.4);
            --accent-amber: #F59E0B;
            --border-subtle: #E2E8F0;
            --border-card: #E8ECF1;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 24px rgba(255, 107, 53, 0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --nav-height: 68px;
            --container-max: 1200px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-section);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-nav);
            border-bottom: 2px solid transparent;
            border-image: linear-gradient(90deg, var(--accent-neon), var(--accent-cyan), var(--accent-neon)) 1;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
            height: var(--nav-height);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-white);
            letter-spacing: -0.3px;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }

        .logo-link:hover {
            text-shadow: 0 0 20px var(--accent-neon-glow);
            color: var(--accent-neon);
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-neon), var(--accent-amber));
            color: #fff;
            font-size: 1rem;
            font-weight: 900;
            letter-spacing: 0;
            box-shadow: 0 0 18px var(--accent-neon-glow);
            flex-shrink: 0;
        }

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

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-white-soft);
            transition: all var(--transition-smooth);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.05);
            text-shadow: 0 0 12px var(--accent-cyan-glow);
        }

        .nav-links a.active {
            color: var(--accent-neon);
            background: rgba(255, 107, 53, 0.1);
            box-shadow: inset 0 0 0 1px rgba(255, 107, 53, 0.25);
            text-shadow: 0 0 14px var(--accent-neon-glow);
        }

        .nav-cta-btn {
            background: linear-gradient(135deg, var(--accent-neon), #E85D2C) !important;
            color: #fff !important;
            font-weight: 700 !important;
            padding: 10px 22px !important;
            border-radius: var(--radius-full) !important;
            box-shadow: 0 4px 18px var(--accent-neon-glow) !important;
            letter-spacing: 0.3px;
            margin-left: 8px;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 6px 28px rgba(255, 107, 53, 0.6) !important;
            transform: translateY(-1px);
            background: linear-gradient(135deg, #FF7D4D, var(--accent-neon)) !important;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 8px;
            transition: color var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            color: var(--accent-neon);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--accent-neon);
            font-weight: 500;
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: #E85D2C;
            text-decoration: underline;
        }

        .breadcrumb .sep {
            color: var(--text-light);
            font-size: 0.7rem;
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 600;
            max-width: 360px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ========== ARTICLE BANNER ========== */
        .article-banner {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            min-height: 280px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 9, 15, 0.82) 0%, rgba(8, 12, 22, 0.9) 100%);
            z-index: 1;
        }

        .article-banner-content {
            position: relative;
            z-index: 2;
            padding: 52px 0;
            width: 100%;
        }

        .article-meta-top {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: rgba(255, 107, 53, 0.18);
            color: var(--accent-neon);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            border: 1px solid rgba(255, 107, 53, 0.3);
            letter-spacing: 0.4px;
            text-transform: uppercase;
        }

        .article-date-badge {
            color: var(--text-white-soft);
            font-size: 0.85rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .article-date-badge i {
            font-size: 0.8rem;
            color: var(--accent-cyan);
        }

        .article-banner-title {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.3;
            letter-spacing: -0.5px;
            max-width: 800px;
            text-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
        }

        /* ========== MAIN CONTENT ========== */
        .article-main {
            flex: 1;
            padding: 40px 0 60px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px;
            align-items: start;
        }

        .article-body-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 40px 44px;
            border: 1px solid var(--border-card);
        }

        .article-featured-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 28px;
            box-shadow: var(--shadow-sm);
        }

        .article-featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-md);
        }

        .article-body-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-primary);
        }

        .article-body-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 32px 0 14px;
            color: #1A1D28;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--accent-neon);
            display: inline-block;
        }

        .article-body-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin: 24px 0 10px;
            color: #2D3344;
        }

        .article-body-content p {
            margin-bottom: 16px;
        }

        .article-body-content ul,
        .article-body-content ol {
            margin: 12px 0 18px 20px;
        }

        .article-body-content li {
            margin-bottom: 8px;
            padding-left: 4px;
        }

        .article-body-content img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
            max-width: 100%;
            height: auto;
        }

        .article-body-content blockquote {
            border-left: 4px solid var(--accent-neon);
            background: #FFF8F5;
            padding: 16px 22px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #5A3E32;
            font-style: italic;
        }

        .article-body-content a {
            color: var(--accent-neon);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body-content a:hover {
            color: #E85D2C;
        }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
        }

        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h4 i {
            color: var(--accent-neon);
            font-size: 0.9rem;
        }

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

        .sidebar-tag {
            display: inline-block;
            padding: 6px 14px;
            background: #F8FAFC;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-secondary);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }

        .sidebar-tag:hover {
            background: #FFF0EB;
            color: var(--accent-neon);
            border-color: var(--accent-neon);
        }

        .sidebar-related-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-primary);
            transition: color var(--transition-fast);
            cursor: pointer;
        }

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

        .sidebar-related-item:hover {
            color: var(--accent-neon);
        }

        .sidebar-related-item i {
            color: var(--accent-cyan);
            font-size: 0.7rem;
            flex-shrink: 0;
        }

        /* ========== NOT FOUND ========== */
        .not-found-section {
            text-align: center;
            padding: 80px 24px;
            flex: 1;
        }

        .not-found-icon {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }

        .not-found-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .not-found-desc {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1rem;
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-neon), #E85D2C);
            color: #fff;
            font-weight: 700;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-size: 1rem;
            box-shadow: 0 4px 18px var(--accent-neon-glow);
            transition: all var(--transition-smooth);
        }

        .btn-back-home:hover {
            box-shadow: 0 8px 30px rgba(255, 107, 53, 0.55);
            transform: translateY(-2px);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(180deg, #0A0E17 0%, #06090F 100%);
            padding: 64px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 320px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-neon), var(--accent-cyan), transparent);
            opacity: 0.7;
        }

        .cta-glow-dot {
            position: absolute;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.25;
            pointer-events: none;
        }

        .cta-glow-dot.cta-dot-left {
            background: var(--accent-neon);
            left: -60px;
            top: 30%;
        }

        .cta-glow-dot.cta-dot-right {
            background: var(--accent-cyan);
            right: -60px;
            bottom: 20%;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-size: 2rem;
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .cta-subtitle {
            color: var(--text-white-soft);
            font-size: 1.05rem;
            margin-bottom: 32px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-btn-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--accent-neon), #E85D2C);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            padding: 15px 36px;
            border-radius: var(--radius-full);
            box-shadow: 0 6px 28px var(--accent-neon-glow);
            transition: all var(--transition-smooth);
            letter-spacing: 0.4px;
        }

        .cta-btn-large:hover {
            box-shadow: 0 10px 40px rgba(255, 107, 53, 0.6);
            transform: translateY(-3px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-footer);
            color: var(--text-white-soft);
            padding: 48px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .logo-link {
            margin-bottom: 14px;
        }

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

        .footer-links-group h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .footer-links-group a {
            display: block;
            font-size: 0.875rem;
            color: var(--text-light);
            padding: 6px 0;
            transition: all var(--transition-fast);
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.82rem;
            color: var(--text-light);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .article-banner-title {
                font-size: 1.8rem;
            }

            .article-body-card {
                padding: 28px 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                flex-direction: column;
                background: var(--bg-nav);
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 2px solid rgba(255, 107, 53, 0.4);
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6);
                z-index: 999;
            }

            .nav-links.show {
                display: flex;
            }

            .nav-links a {
                width: 100%;
                padding: 12px 18px;
                border-radius: var(--radius-sm);
                justify-content: center;
            }

            .nav-cta-btn {
                margin-left: 0;
                margin-top: 6px;
            }

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

            .article-banner {
                min-height: 200px;
            }

            .article-banner-title {
                font-size: 1.45rem;
            }

            .article-banner-content {
                padding: 36px 0;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

            .article-body-card {
                padding: 22px 18px;
            }

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
                text-align: center;
            }

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

            .footer-links-group a {
                text-align: center;
            }

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

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

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }

            .article-banner-title {
                font-size: 1.2rem;
            }

            .article-body-card {
                padding: 18px 14px;
                border-radius: var(--radius-md);
            }

            .article-body-content {
                font-size: 0.95rem;
            }

            .article-body-content h2 {
                font-size: 1.2rem;
            }

            .article-body-content h3 {
                font-size: 1.05rem;
            }

            .cta-btn-large {
                font-size: 1rem;
                padding: 13px 26px;
            }

            .logo-link span:last-child {
                font-size: 1.1rem;
            }

            .article-featured-image {
                border-radius: var(--radius-sm);
            }

            .sidebar-card {
                padding: 18px;
            }
        }

/* roulang page: category1 */
:root {
            --color-bg-deep: #06060d;
            --color-bg-dark: #0d0d1a;
            --color-bg-card: #131328;
            --color-bg-card-hover: #181835;
            --color-surface: #1a1a33;
            --color-border: #252545;
            --color-border-light: #333358;
            --color-neon-blue: #00c6ff;
            --color-neon-blue-glow: rgba(0, 198, 255, 0.5);
            --color-neon-blue-soft: rgba(0, 198, 255, 0.15);
            --color-neon-purple: #a855f7;
            --color-neon-purple-glow: rgba(168, 85, 247, 0.5);
            --color-neon-cyan: #00e5ff;
            --color-accent: #ff4da6;
            --color-accent-glow: rgba(255, 77, 166, 0.4);
            --color-text-primary: #f0f0f5;
            --color-text-secondary: #b0b0c8;
            --color-text-muted: #7878a0;
            --color-text-white: #ffffff;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4), 0 1px 4px rgba(0, 198, 255, 0.06);
            --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.55), 0 2px 12px rgba(0, 198, 255, 0.15);
            --shadow-neon-sm: 0 0 12px rgba(0, 198, 255, 0.3);
            --shadow-neon-md: 0 0 24px rgba(0, 198, 255, 0.4);
            --shadow-neon-lg: 0 0 40px rgba(0, 198, 255, 0.5);
            --shadow-purple-sm: 0 0 14px rgba(168, 85, 247, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --nav-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg-deep);
            color: var(--color-text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        input,
        textarea {
            font-family: inherit;
            outline: none;
        }

        ::selection {
            background: var(--color-neon-blue-soft);
            color: var(--color-neon-blue);
        }

        .container {
            width: 100%;
            max-width: 1260px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(6, 6, 13, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(37, 37, 69, 0.7);
            transition: var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(6, 6, 13, 0.95);
            border-bottom-color: rgba(0, 198, 255, 0.25);
            box-shadow: 0 2px 32px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 198, 255, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-text-white);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: var(--transition-smooth);
        }

        .logo-link:hover {
            color: var(--color-neon-blue);
            text-shadow: 0 0 20px var(--color-neon-blue-glow);
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-neon-blue), var(--color-neon-purple));
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            letter-spacing: 0;
            box-shadow: var(--shadow-neon-sm);
            transition: var(--transition-smooth);
        }

        .logo-link:hover .logo-icon {
            box-shadow: var(--shadow-neon-md);
            transform: scale(1.05);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 50px;
            font-size: 0.94rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            position: relative;
            transition: var(--transition-smooth);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-links a:hover {
            color: var(--color-text-white);
            background: rgba(255, 255, 255, 0.04);
            text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
        }

        .nav-links a.active {
            color: var(--color-neon-blue);
            font-weight: 600;
            background: var(--color-neon-blue-soft);
            text-shadow: 0 0 16px var(--color-neon-blue-glow);
            box-shadow: inset 0 0 0 1px rgba(0, 198, 255, 0.25);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 28px;
            height: 2px;
            background: var(--color-neon-blue);
            border-radius: 2px;
            box-shadow: 0 0 12px var(--color-neon-blue-glow), 0 0 24px var(--color-neon-blue-glow);
        }

        .nav-cta-btn {
            display: inline-flex !important;
            align-items: center;
            gap: 6px;
            padding: 10px 22px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
            font-size: 0.92rem !important;
            color: #fff !important;
            background: linear-gradient(135deg, var(--color-neon-blue), #0098cc) !important;
            box-shadow: 0 4px 18px rgba(0, 198, 255, 0.35), 0 1px 4px rgba(0, 0, 0, 0.3) !important;
            border: none !important;
            transition: var(--transition-bounce) !important;
            letter-spacing: 0.02em !important;
        }

        .nav-cta-btn:hover {
            background: linear-gradient(135deg, #00d4ff, #00a8dd) !important;
            box-shadow: 0 6px 28px rgba(0, 198, 255, 0.5), 0 0 20px rgba(0, 198, 255, 0.25) !important;
            transform: translateY(-2px);
            color: #fff !important;
            text-shadow: none !important;
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            background: none;
            border: none;
        }

        .mobile-menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--color-text-secondary);
            border-radius: 3px;
            transition: var(--transition-smooth);
        }

        .mobile-menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
            background: var(--color-neon-blue);
        }
        .mobile-menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
            background: var(--color-neon-blue);
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(6, 6, 13, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 20px 32px;
                gap: 6px;
                border-bottom: 2px solid rgba(0, 198, 255, 0.3);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition-smooth);
                z-index: 999;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-links a {
                width: 100%;
                justify-content: center;
                padding: 13px 18px;
                font-size: 1rem;
                border-radius: var(--radius-md);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-cta-btn {
                width: 100%;
                justify-content: center;
                margin-top: 8px;
            }
        }

        .category-hero {
            position: relative;
            margin-top: var(--nav-height);
            padding: 80px 0 70px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(6, 6, 13, 0.75) 0%,
                    rgba(6, 6, 13, 0.85) 40%,
                    rgba(6, 6, 13, 0.95) 100%);
            z-index: 1;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg,
                    transparent,
                    var(--color-neon-blue),
                    var(--color-neon-purple),
                    var(--color-neon-blue),
                    transparent);
            box-shadow: 0 0 20px var(--color-neon-blue-glow);
            z-index: 2;
            opacity: 0.7;
        }

        .category-hero .container {
            position: relative;
            z-index: 3;
        }

        .category-hero-content {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 50px;
            background: var(--color-neon-blue-soft);
            border: 1px solid rgba(0, 198, 255, 0.3);
            color: var(--color-neon-blue);
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
            text-shadow: 0 0 10px var(--color-neon-blue-glow);
        }

        .category-hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--color-text-white);
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            line-height: 1.25;
        }

        .category-hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--color-neon-blue), var(--color-neon-cyan));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: none;
        }

        .category-hero-content p {
            font-size: 1.15rem;
            color: var(--color-text-secondary);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.75;
        }

        .category-hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
        }

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

        .hero-stat .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-neon-blue);
            text-shadow: 0 0 20px var(--color-neon-blue-glow);
            line-height: 1;
        }

        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 6px;
            letter-spacing: 0.03em;
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 56px 0 48px;
            }
            .category-hero-content h1 {
                font-size: 2rem;
            }
            .category-hero-content p {
                font-size: 1rem;
            }
            .category-hero-stats {
                gap: 24px;
            }
            .hero-stat .stat-number {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .category-hero-content h1 {
                font-size: 1.6rem;
            }
            .hero-stat .stat-number {
                font-size: 1.3rem;
            }
        }

        .section {
            padding: 72px 0;
        }

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

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-white);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 500px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-header .neon-line {
            display: block;
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--color-neon-blue), var(--color-neon-purple));
            border-radius: 3px;
            margin: 14px auto 0;
            box-shadow: 0 0 16px var(--color-neon-blue-glow);
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        @media (max-width: 1024px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 600px) {
            .articles-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        .article-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: var(--transition-smooth);
            position: relative;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
        }

        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(0, 198, 255, 0.35);
            background: var(--color-bg-card-hover);
        }

        .article-card-image {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-dark);
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

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

        .article-card-image .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            display: inline-block;
            padding: 5px 13px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(0, 198, 255, 0.2);
            color: var(--color-neon-blue);
            border: 1px solid rgba(0, 198, 255, 0.35);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            text-shadow: 0 0 8px var(--color-neon-blue-glow);
            z-index: 2;
        }

        .article-card-image .card-date {
            position: absolute;
            bottom: 12px;
            right: 14px;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.8);
            background: rgba(0, 0, 0, 0.55);
            padding: 4px 10px;
            border-radius: 50px;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            letter-spacing: 0.02em;
        }

        .article-card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .article-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-white);
            line-height: 1.45;
            transition: var(--transition-fast);
        }

        .article-card:hover .article-card-body h3 {
            color: var(--color-neon-blue);
            text-shadow: 0 0 8px var(--color-neon-blue-glow);
        }

        .article-card-body .card-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            flex: 1;
        }

        .article-card-body .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--color-text-muted);
            padding-top: 6px;
            border-top: 1px solid var(--color-border);
        }

        .card-meta .read-more {
            color: var(--color-neon-blue);
            font-weight: 600;
            font-size: 0.84rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition-fast);
        }

        .card-meta .read-more:hover {
            color: var(--color-neon-cyan);
            text-shadow: 0 0 10px var(--color-neon-blue-glow);
        }

        .card-meta .read-more i {
            font-size: 0.7rem;
            transition: var(--transition-fast);
        }

        .card-meta .read-more:hover i {
            transform: translateX(3px);
        }

        .featured-guides {
            background: var(--color-bg-dark);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .featured-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 10px;
            scrollbar-width: thin;
            scrollbar-color: var(--color-border) transparent;
        }

        .featured-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .featured-scroll::-webkit-scrollbar-track {
            background: transparent;
            border-radius: 3px;
        }
        .featured-scroll::-webkit-scrollbar-thumb {
            background: var(--color-border);
            border-radius: 3px;
        }

        .featured-card {
            flex: 0 0 340px;
            scroll-snap-align: start;
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: var(--transition-smooth);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }

        .featured-card:hover {
            border-color: rgba(168, 85, 247, 0.4);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 18px rgba(168, 85, 247, 0.2);
            transform: translateY(-4px);
        }

        .featured-card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-bg-dark);
        }

        .featured-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

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

        .featured-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .featured-card-body h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text-white);
            line-height: 1.4;
        }

        .featured-card-body p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.55;
        }

        .featured-card-body .featured-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-neon-purple);
            letter-spacing: 0.03em;
        }

        .featured-badge i {
            font-size: 0.65rem;
            color: var(--color-accent);
            animation: pulse-dot 1.8s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(1.5);
            }
        }

        @media (max-width: 600px) {
            .featured-card {
                flex: 0 0 280px;
            }
        }

        .cta-section {
            background: linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg-dark) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -20%;
            width: 80%;
            height: 180%;
            background: radial-gradient(ellipse, rgba(0, 198, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .cta-card {
            position: relative;
            z-index: 1;
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
            background: var(--color-bg-card);
            border-radius: var(--radius-2xl);
            padding: 48px 40px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: var(--transition-smooth);
        }

        .cta-card:hover {
            border-color: rgba(0, 198, 255, 0.4);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 198, 255, 0.12);
        }

        .cta-card h2 {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--color-text-white);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .cta-card p {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .cta-card .cta-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--color-neon-blue), #0098cc);
            box-shadow: 0 6px 24px rgba(0, 198, 255, 0.4), 0 2px 8px rgba(0, 0, 0, 0.3);
            letter-spacing: 0.03em;
            transition: var(--transition-bounce);
        }

        .cta-card .cta-btn-primary:hover {
            background: linear-gradient(135deg, #00d4ff, #00a8dd);
            box-shadow: 0 10px 36px rgba(0, 198, 255, 0.55), 0 0 28px rgba(0, 198, 255, 0.3);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .cta-card {
                padding: 32px 22px;
            }
            .cta-card h2 {
                font-size: 1.5rem;
            }
            .cta-card p {
                font-size: 0.95rem;
            }
        }

        .faq-section {
            background: var(--color-bg-deep);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }

        .faq-item:hover {
            border-color: rgba(0, 198, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4), 0 0 12px rgba(0, 198, 255, 0.06);
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text-white);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: var(--transition-fast);
            letter-spacing: 0.01em;
        }

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

        .faq-question i {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            transition: var(--transition-smooth);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--color-text-secondary);
            font-size: 0.93rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 520px) {
            .faq-question {
                padding: 15px 16px;
                font-size: 0.93rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.87rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }

        .site-footer {
            background: var(--color-bg-dark);
            border-top: 1px solid var(--color-border);
            padding: 56px 0 28px;
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 520px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        .footer-brand .logo-link {
            margin-bottom: 12px;
            display: inline-flex;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-links-group h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text-white);
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-links-group a {
            display: block;
            font-size: 0.9rem;
            color: var(--color-text-muted);
            padding: 6px 0;
            transition: var(--transition-fast);
        }

        .footer-links-group a:hover {
            color: var(--color-neon-blue);
            text-shadow: 0 0 8px var(--color-neon-blue-glow);
            padding-left: 4px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 22px;
            border-top: 1px solid var(--color-border);
            font-size: 0.85rem;
            color: var(--color-text-muted);
            letter-spacing: 0.02em;
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 20px;
            }
        }