/* roulang page: index */
:root {
            --primary: #00d4ff;
            --primary-glow: rgba(0, 212, 255, 0.5);
            --primary-dark: #009dc4;
            --secondary: #b347ea;
            --secondary-glow: rgba(179, 71, 234, 0.45);
            --accent: #00ff88;
            --accent-glow: rgba(0, 255, 136, 0.4);
            --bg-deep: #060612;
            --bg-primary: #0a0a1a;
            --bg-panel: rgba(16, 16, 38, 0.85);
            --bg-panel-solid: #101026;
            --bg-card: rgba(20, 20, 48, 0.75);
            --bg-card-hover: rgba(28, 28, 60, 0.9);
            --text-primary: #f0f0f8;
            --text-secondary: #c0c0d4;
            --text-muted: #8888a8;
            --text-dim: #5e5e82;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(0, 212, 255, 0.25);
            --border-card: rgba(255, 255, 255, 0.1);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.55);
            --shadow-glow: 0 0 28px rgba(0, 212, 255, 0.22);
            --shadow-glow-strong: 0 0 48px rgba(0, 212, 255, 0.35);
            --shadow-purple-glow: 0 0 24px rgba(179, 71, 234, 0.2);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-spring: 0.45s cubic-bezier(0.22, 0.61, 0.36, 1);
            --nav-height: 68px;
            --container-max: 1240px;
            --container-narrow: 960px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            background: var(--bg-deep);
            color: var(--text-primary);
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.015em;
        }

        body::before {
            content: '';
            position: fixed;
            top: -40%;
            left: -20%;
            width: 140%;
            height: 140%;
            background:
                radial-gradient(ellipse at 25% 20%, rgba(0, 212, 255, 0.04) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 60%, rgba(179, 71, 234, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 85%, rgba(0, 255, 136, 0.03) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        .container--narrow {
            max-width: var(--container-narrow);
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            transition: all var(--transition-smooth);
            border-bottom: 1px solid transparent;
        }

        .site-header::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 10, 26, 0.55);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-smooth);
        }

        .site-header.scrolled::before {
            background: rgba(8, 8, 22, 0.92);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom-color: rgba(255, 255, 255, 0.12);
            box-shadow: 0 4px 32px rgba(0, 0, 0, 0.5);
        }

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

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            color: var(--text-primary);
            z-index: 2;
            position: relative;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #fff;
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.5);
            flex-shrink: 0;
        }

        .logo-text {
            background: linear-gradient(135deg, #e8f4ff 0%, var(--primary) 45%, #c8b8ff 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 800;
            letter-spacing: 0.05em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            z-index: 2;
            position: relative;
        }

        .nav-links a {
            padding: 10px 18px;
            border-radius: 24px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.02em;
        }

        .nav-links a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-links a.active {
            color: #fff;
            background: rgba(0, 212, 255, 0.15);
            box-shadow: 0 0 16px rgba(0, 212, 255, 0.15);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            box-shadow: 0 0 8px var(--primary-glow);
        }

        .nav-cta {
            margin-left: 8px;
            padding: 10px 22px !important;
            border-radius: 24px !important;
            background: linear-gradient(135deg, var(--primary) 0%, #0090cc 100%) !important;
            color: #fff !important;
            font-weight: 600 !important;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
            transition: all var(--transition-fast) !important;
        }

        .nav-cta:hover {
            box-shadow: 0 0 32px rgba(0, 212, 255, 0.5) !important;
            transform: translateY(-1px);
            background: linear-gradient(135deg, #22dcff 0%, #00a8e0 100%) !important;
        }

        .mobile-toggle {
            display: none;
            z-index: 2;
            position: relative;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition-fast);
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            overflow: hidden;
            z-index: 1;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            z-index: -2;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background:
                linear-gradient(180deg, rgba(6, 6, 18, 0.55) 0%, rgba(10, 10, 26, 0.7) 40%, rgba(6, 6, 18, 0.9) 85%, #060612 100%);
            z-index: -1;
        }

        .hero-glow-orb {
            position: absolute;
            border-radius: 50%;
            filter: blur(120px);
            opacity: 0.3;
            pointer-events: none;
            z-index: -1;
        }

        .hero-glow-orb--blue {
            width: 500px;
            height: 500px;
            background: rgba(0, 212, 255, 0.18);
            top: -10%;
            left: 15%;
        }

        .hero-glow-orb--purple {
            width: 400px;
            height: 400px;
            background: rgba(179, 71, 234, 0.15);
            bottom: 5%;
            right: 10%;
        }

        .hero-content {
            text-align: center;
            max-width: 800px;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 30px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.25);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--primary);
            margin-bottom: 28px;
            letter-spacing: 0.03em;
        }

        .hero-badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 10px var(--accent-glow);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 8px var(--accent-glow);
            }
            50% {
                box-shadow: 0 0 22px rgba(0, 255, 136, 0.7);
            }
        }

        .hero-title {
            font-size: clamp(2.4rem, 5.5vw, 4rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: 0.03em;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 0%, #d0e8ff 35%, #b8d4ff 60%, #e0d0ff 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: none;
        }

        .hero-subtitle {
            font-size: clamp(1.05rem, 1.6vw, 1.25rem);
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.8;
            letter-spacing: 0.02em;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.025em;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .btn--primary {
            background: linear-gradient(135deg, var(--primary) 0%, #0090cc 100%);
            color: #fff;
            box-shadow: 0 4px 22px rgba(0, 212, 255, 0.35);
        }

        .btn--primary:hover {
            box-shadow: 0 6px 32px rgba(0, 212, 255, 0.55);
            transform: translateY(-2px);
        }

        .btn--primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 14px rgba(0, 212, 255, 0.3);
        }

        .btn--outline {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid rgba(255, 255, 255, 0.25);
        }

        .btn--outline:hover {
            border-color: rgba(255, 255, 255, 0.5);
            background: rgba(255, 255, 255, 0.05);
            box-shadow: 0 0 20px rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

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

        .btn--sm {
            padding: 10px 20px;
            font-size: 0.9rem;
            border-radius: 22px;
        }

        .btn--lg {
            padding: 16px 36px;
            font-size: 1.1rem;
            border-radius: 32px;
        }

        .btn i {
            font-size: 0.95em;
        }

        /* ===== Sections Common ===== */
        .section {
            position: relative;
            padding: 90px 24px;
            z-index: 1;
        }

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

        .section--panel {
            background: var(--bg-panel-solid);
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ===== Features Grid ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            transition: all var(--transition-spring);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .feature-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow), var(--shadow-md);
            transform: translateY(-6px);
            background: var(--bg-card-hover);
        }

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

        .feature-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 20px;
        }

        .feature-card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 18px;
            background: rgba(0, 212, 255, 0.12);
            color: var(--primary);
            box-shadow: 0 0 16px rgba(0, 212, 255, 0.2);
        }

        .feature-card-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .feature-card-desc {
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* ===== Stats Section ===== */
        .stats-section {
            position: relative;
            z-index: 1;
            padding: 80px 24px;
        }

        .stats-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            z-index: -2;
            opacity: 0.6;
        }

        .stats-overlay {
            position: absolute;
            inset: 0;
            background: rgba(6, 6, 18, 0.82);
            z-index: -1;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .stat-item {
            padding: 28px 16px;
            border-radius: var(--radius-lg);
            background: rgba(20, 20, 48, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            transition: all var(--transition-smooth);
        }

        .stat-item:hover {
            border-color: rgba(0, 212, 255, 0.3);
            box-shadow: 0 0 24px rgba(0, 212, 255, 0.12);
            transform: translateY(-3px);
        }

        .stat-number {
            font-family: var(--font-mono);
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            background: linear-gradient(180deg, #fff 0%, var(--primary) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }

        /* ===== Category Banner ===== */
        .category-banner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-xl);
            overflow: hidden;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: all var(--transition-smooth);
        }

        .category-banner:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow), var(--shadow-md);
        }

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

        .category-banner-body {
            padding: 40px 36px 40px 8px;
        }

        .category-banner-tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 16px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            background: rgba(179, 71, 234, 0.15);
            color: var(--secondary);
            margin-bottom: 16px;
        }

        .category-banner-title {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .category-banner-desc {
            font-size: 0.98rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        /* ===== News List ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .news-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 20px;
            transition: all var(--transition-smooth);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .news-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow), var(--shadow-sm);
            transform: translateY(-3px);
        }

        .news-card-img {
            width: 140px;
            height: 110px;
            object-fit: cover;
            border-radius: var(--radius-md);
            flex-shrink: 0;
        }

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

        .news-card-category {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 3px 10px;
            border-radius: 12px;
            background: rgba(0, 212, 255, 0.1);
            color: var(--primary);
            margin-bottom: 8px;
        }

        .news-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-summary {
            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-time {
            font-size: 0.78rem;
            color: var(--text-dim);
            letter-spacing: 0.02em;
        }

        .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-lg);
            border: 1px dashed var(--border-card);
        }

        /* ===== Process / Steps ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), var(--accent), transparent);
            z-index: 0;
            opacity: 0.4;
        }

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

        .process-step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-panel-solid);
            border: 2px solid var(--border-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            font-family: var(--font-mono);
            color: var(--primary);
            margin: 0 auto 16px;
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.15);
            transition: all var(--transition-smooth);
        }

        .process-step:hover .process-step-num {
            box-shadow: 0 0 28px rgba(0, 212, 255, 0.4);
            border-color: var(--primary);
            transform: scale(1.08);
        }

        .process-step-title {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .process-step-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .faq-item:hover {
            border-color: var(--border-glow);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            background: transparent;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }

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

        .faq-icon {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }

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

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

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 90px 24px;
            text-align: center;
            z-index: 1;
            overflow: hidden;
        }

        .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center / cover no-repeat;
            z-index: -2;
            opacity: 0.55;
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: rgba(6, 6, 18, 0.78);
            z-index: -1;
        }

        .cta-glow {
            position: absolute;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            filter: blur(100px);
            background: rgba(0, 212, 255, 0.12);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: -1;
            pointer-events: none;
        }

        .cta-title {
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
            position: relative;
            z-index: 2;
        }

        .cta-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 32px;
            position: relative;
            z-index: 2;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
            position: relative;
            z-index: 2;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #040410;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 50px 24px 30px;
            position: relative;
            z-index: 1;
        }

        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: flex-start;
            gap: 40px;
            max-width: var(--container-max);
            margin: 0 auto;
        }

        .footer-brand {
            max-width: 300px;
        }

        .footer-logo {
            font-size: 1.3rem;
            font-weight: 800;
            letter-spacing: 0.04em;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .footer-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .footer-links-group {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
        }

        .footer-links-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .footer-links-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: 28px;
            margin-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.82rem;
            color: var(--text-dim);
            letter-spacing: 0.02em;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Mobile Navigation Overlay ===== */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 999;
            background: rgba(6, 6, 18, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 20px;
        }

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

        .mobile-nav-overlay a {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 12px 28px;
            border-radius: 28px;
            transition: all var(--transition-fast);
        }

        .mobile-nav-overlay a:hover,
        .mobile-nav-overlay a.active {
            color: #fff;
            background: rgba(0, 212, 255, 0.12);
        }

        .mobile-nav-close {
            position: absolute;
            top: 22px;
            right: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            z-index: 3;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid::before {
                display: none;
            }
            .category-banner {
                grid-template-columns: 1fr;
            }
            .category-banner-img {
                height: 220px;
            }
            .category-banner-body {
                padding: 24px 28px 32px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .hero {
                min-height: 90vh;
                padding: 100px 20px 60px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .section {
                padding: 60px 16px;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card-img {
                width: 100%;
                height: 160px;
            }
            .footer-inner {
                flex-direction: column;
                gap: 28px;
            }
            .footer-links-group {
                gap: 28px;
            }
            .btn {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
            .btn--lg {
                padding: 14px 28px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .hero-buttons .btn {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 1.7rem;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .category-banner-img {
                height: 180px;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card-img {
                height: 140px;
            }
            .section {
                padding: 48px 12px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.9rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .cta-buttons .btn {
                width: 100%;
                max-width: 260px;
                justify-content: center;
            }
            .footer-bottom {
                font-size: 0.75rem;
            }
        }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --bg-deep: #060714;
            --bg-surface: #0a0a1a;
            --bg-card: rgba(14, 14, 36, 0.75);
            --bg-glass: rgba(10, 10, 30, 0.55);
            --bg-glass-solid: rgba(8, 8, 26, 0.92);
            --text-primary: #e8e8f2;
            --text-secondary: #b0b0c8;
            --text-weak: rgba(176, 176, 200, 0.55);
            --neon-cyan: #00e5ff;
            --neon-cyan-dim: rgba(0, 229, 255, 0.35);
            --neon-cyan-glow: rgba(0, 229, 255, 0.18);
            --neon-purple: #a855f7;
            --neon-purple-dim: rgba(168, 85, 247, 0.35);
            --neon-purple-glow: rgba(168, 85, 247, 0.2);
            --neon-pink: #f472b6;
            --neon-pink-glow: rgba(244, 114, 182, 0.22);
            --accent-gradient: linear-gradient(135deg, #00e5ff 0%, #a855f7 50%, #f472b6 100%);
            --accent-gradient-subtle: linear-gradient(135deg, rgba(0, 229, 255, 0.12) 0%, rgba(168, 85, 247, 0.12) 50%, rgba(244, 114, 182, 0.08) 100%);
            --border-subtle: rgba(255, 255, 255, 0.07);
            --border-glow: rgba(0, 229, 255, 0.25);
            --border-purple: rgba(168, 85, 247, 0.28);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 9999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.45);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.55);
            --shadow-neon-cyan: 0 0 24px rgba(0, 229, 255, 0.22), 0 0 60px rgba(0, 229, 255, 0.07);
            --shadow-neon-purple: 0 0 24px rgba(168, 85, 247, 0.25), 0 0 60px rgba(168, 85, 247, 0.08);
            --shadow-neon-pink: 0 0 20px rgba(244, 114, 182, 0.2), 0 0 50px rgba(244, 114, 182, 0.06);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Cascadia Code', monospace;
            --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1260px;
            --container-narrow: 960px;
            --nav-height: 68px;
        }

        /* ============ 基础重置 ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            background-image:
                radial-gradient(ellipse at 20% 15%, rgba(0, 229, 255, 0.04) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 20%, rgba(168, 85, 247, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 60%, rgba(244, 114, 182, 0.03) 0%, transparent 50%);
            background-attachment: fixed;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
        }

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

        .container-narrow {
            max-width: var(--container-narrow);
        }

        /* ============ 头部导航 - 透明玻璃沉浸 ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--bg-glass);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .site-header.scrolled {
            background: var(--bg-glass-solid);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
            border-bottom-color: rgba(0, 229, 255, 0.12);
        }

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

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            z-index: 1001;
            transition: color var(--transition-fast), text-shadow var(--transition-fast);
            white-space: nowrap;
        }

        .logo-link:hover {
            color: var(--neon-cyan);
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.4);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.05rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-neon-cyan);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            z-index: 1001;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: var(--radius-full);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

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

        .nav-links a.active {
            color: var(--neon-cyan);
            background: rgba(0, 229, 255, 0.08);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2.5px;
            border-radius: 2px;
            background: var(--neon-cyan);
            box-shadow: 0 0 10px var(--neon-cyan), 0 0 20px var(--neon-cyan-glow);
        }

        .nav-cta {
            background: var(--accent-gradient) !important;
            color: #fff !important;
            font-weight: 600 !important;
            box-shadow: var(--shadow-neon-purple);
            margin-left: 8px;
            padding: 10px 22px !important;
            border-radius: var(--radius-full) !important;
        }

        .nav-cta:hover {
            box-shadow: var(--shadow-neon-cyan) !important;
            transform: translateY(-1px);
            background: var(--accent-gradient) !important;
            color: #fff !important;
        }

        .nav-cta.active {
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.45), 0 0 60px rgba(168, 85, 247, 0.3) !important;
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .mobile-menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
            transform-origin: center;
        }

        .mobile-menu-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

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

        .mobile-menu-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ============ 分类页 Hero ============ */
        .category-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: calc(var(--nav-height) + 60px) 24px 60px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            overflow: hidden;
            isolation: isolate;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(6, 7, 20, 0.65) 0%,
                    rgba(10, 10, 26, 0.78) 35%,
                    rgba(6, 7, 20, 0.92) 70%,
                    var(--bg-deep) 100%);
            z-index: 1;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 30% 40%, rgba(0, 229, 255, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 35%, rgba(168, 85, 247, 0.1) 0%, transparent 50%);
            z-index: 2;
            pointer-events: none;
        }

        .category-hero-content {
            position: relative;
            z-index: 3;
            max-width: 700px;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 18px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--neon-cyan);
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.2);
            margin-bottom: 20px;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.1);
        }

        .category-badge i {
            font-size: 0.9rem;
        }

        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: #fff;
            margin-bottom: 16px;
            text-shadow: 0 0 40px rgba(0, 229, 255, 0.25), 0 0 80px rgba(168, 85, 247, 0.18);
        }

        .category-hero .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 540px;
            margin: 0 auto 24px;
        }

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

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

        .hero-stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            font-family: var(--font-mono);
            color: var(--neon-cyan);
            text-shadow: 0 0 18px var(--neon-cyan-glow);
            letter-spacing: 0.02em;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-top: 4px;
        }

        /* ============ 主内容区 ============ */
        .main-content {
            padding: 56px 0 80px;
        }

        /* 筛选标签栏 */
        .filter-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
            padding: 18px 22px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

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

        .filter-tag {
            padding: 7px 16px;
            border-radius: var(--radius-full);
            font-size: 0.88rem;
            font-weight: 500;
            cursor: pointer;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .filter-tag:hover {
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.18);
            background: rgba(255, 255, 255, 0.06);
        }

        .filter-tag.active {
            color: #fff;
            background: rgba(0, 229, 255, 0.13);
            border-color: var(--neon-cyan-dim);
            box-shadow: 0 0 14px var(--neon-cyan-glow);
            font-weight: 600;
        }

        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 0.88rem;
            cursor: pointer;
            padding: 8px 14px;
            border-radius: var(--radius-full);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
            background: rgba(255, 255, 255, 0.02);
        }

        .filter-sort:hover {
            border-color: rgba(255, 255, 255, 0.2);
            color: var(--text-primary);
        }

        /* 文章卡片网格 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 48px;
        }

        .article-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            position: relative;
        }

        .article-card::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            opacity: 0;
            transition: opacity var(--transition-base);
            pointer-events: none;
            z-index: 0;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.04) 0%, transparent 40%, rgba(168, 85, 247, 0.04) 100%);
        }

        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-neon-purple);
            border-color: var(--border-purple);
        }

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

        .article-card-image {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-surface);
        }

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

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

        .article-card-image .card-category-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            color: #fff;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            z-index: 2;
        }

        .article-card-body {
            padding: 20px 22px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
            position: relative;
            z-index: 1;
        }

        .article-card-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            line-height: 1.45;
            color: var(--text-primary);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .article-card:hover .article-card-body h3 {
            color: var(--neon-cyan);
        }

        .article-card-excerpt {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
            margin-bottom: 14px;
        }

        .article-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-weak);
            padding-top: 12px;
            border-top: 1px solid var(--border-subtle);
        }

        .article-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .article-card-meta i {
            font-size: 0.75rem;
            opacity: 0.7;
        }

        /* 分页导航 */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 16px 0;
        }

        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 42px;
            height: 42px;
            padding: 0 12px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            color: var(--text-secondary);
            border: 1px solid transparent;
            background: transparent;
        }

        .pagination a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
            border-color: var(--border-subtle);
        }

        .pagination .current {
            color: #fff;
            background: var(--accent-gradient);
            font-weight: 700;
            box-shadow: var(--shadow-neon-purple);
            border-color: transparent;
        }

        .pagination .disabled {
            opacity: 0.35;
            pointer-events: none;
        }

        /* ============ CTA 板块 ============ */
        .cta-section {
            padding: 60px 24px;
            text-align: center;
            position: relative;
            isolation: isolate;
            margin-top: 40px;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at center, rgba(0, 229, 255, 0.06) 0%, transparent 65%),
                radial-gradient(ellipse at 70% 50%, rgba(168, 85, 247, 0.07) 0%, transparent 55%);
            z-index: 0;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 620px;
            margin: 0 auto;
            padding: 48px 36px;
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-subtle);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-md);
        }

        .cta-inner h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .cta-inner p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.6;
            margin-bottom: 24px;
        }

        .cta-inner .btn-glow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            background: var(--accent-gradient);
            box-shadow: var(--shadow-neon-purple);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
        }

        .cta-inner .btn-glow:hover {
            box-shadow: var(--shadow-neon-cyan);
            transform: translateY(-2px);
        }

        .cta-inner .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--neon-cyan);
            border: 1.5px solid var(--neon-cyan-dim);
            transition: all var(--transition-base);
            margin-left: 12px;
            background: rgba(0, 229, 255, 0.04);
        }

        .cta-inner .btn-outline:hover {
            background: rgba(0, 229, 255, 0.1);
            border-color: var(--neon-cyan);
            box-shadow: 0 0 20px var(--neon-cyan-glow);
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--bg-surface);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 24px 28px;
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 200px;
            height: 1px;
            background: var(--accent-gradient);
            opacity: 0.5;
        }

        .footer-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.6fr 2.4fr;
            gap: 48px;
            padding-bottom: 36px;
            border-bottom: 1px solid var(--border-subtle);
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-logo {
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: #fff;
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
        }

        .footer-desc {
            color: var(--text-weak);
            font-size: 0.9rem;
            line-height: 1.6;
            max-width: 300px;
        }

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

        .footer-links-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

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

        .footer-links-col a:hover {
            color: var(--neon-cyan);
            padding-left: 4px;
            text-shadow: 0 0 10px var(--neon-cyan-glow);
        }

        .footer-bottom {
            max-width: var(--container-max);
            margin: 20px auto 0;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-weak);
            letter-spacing: 0.02em;
        }

        /* ============ 响应式设计 ============ */
        @media (max-width: 1024px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .category-hero h1 {
                font-size: 2.2rem;
            }

            .category-hero {
                min-height: 320px;
            }

            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
            }

            .articles-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .category-hero {
                min-height: 280px;
                padding: calc(var(--nav-height) + 40px) 20px 40px;
            }

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

            .category-hero .hero-subtitle {
                font-size: 0.95rem;
            }

            .category-hero-stats {
                gap: 24px;
            }

            .hero-stat-number {
                font-size: 1.4rem;
            }

            .footer-links-group {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .footer-inner {
                gap: 28px;
            }

            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-glass-solid);
                backdrop-filter: blur(28px);
                -webkit-backdrop-filter: blur(28px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border-subtle);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform var(--transition-base), opacity var(--transition-base);
                pointer-events: none;
            }

            .nav-links.active {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-links a {
                padding: 13px 18px;
                border-radius: var(--radius-md);
                font-size: 1rem;
                justify-content: center;
            }

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

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

            .cta-inner {
                padding: 32px 20px;
            }

            .cta-inner h2 {
                font-size: 1.4rem;
            }

            .cta-inner .btn-outline {
                margin-left: 8px;
            }

            .filter-tags {
                gap: 6px;
            }

            .filter-tag {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
        }

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

            .header-inner {
                padding: 0 14px;
            }

            .category-hero h1 {
                font-size: 1.45rem;
            }

            .category-hero {
                min-height: 240px;
                padding: calc(var(--nav-height) + 30px) 14px 30px;
            }

            .category-hero-stats {
                gap: 16px;
            }

            .hero-stat-number {
                font-size: 1.2rem;
            }

            .hero-stat-label {
                font-size: 0.75rem;
            }

            .article-card-body {
                padding: 14px 16px 14px;
            }

            .article-card-body h3 {
                font-size: 0.98rem;
            }

            .footer-links-group {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .footer-logo {
                font-size: 1.2rem;
            }

            .filter-bar {
                padding: 14px 16px;
                border-radius: var(--radius-md);
            }

            .cta-inner {
                padding: 24px 16px;
                border-radius: var(--radius-lg);
            }

            .cta-inner .btn-glow,
            .cta-inner .btn-outline {
                display: flex;
                width: 100%;
                justify-content: center;
                margin: 0 0 10px 0;
            }

            .pagination a,
            .pagination span {
                min-width: 34px;
                height: 34px;
                font-size: 0.8rem;
                padding: 0 8px;
            }
        }

        /* ============ 辅助动画 ============ */
        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 0 16px rgba(0, 229, 255, 0.18), 0 0 40px rgba(0, 229, 255, 0.05);
            }
            50% {
                box-shadow: 0 0 28px rgba(0, 229, 255, 0.3), 0 0 64px rgba(0, 229, 255, 0.1);
            }
        }

        .pulse-anim {
            animation: pulse-glow 3s ease-in-out infinite;
        }

        /* 焦点可见性 */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--neon-cyan);
            outline-offset: 3px;
            border-radius: 3px;
        }

/* roulang page: article */
:root {
            --bg-primary: #06060f;
            --bg-secondary: #0b0b1a;
            --bg-card: rgba(16, 16, 38, 0.65);
            --bg-card-hover: rgba(22, 22, 50, 0.8);
            --bg-glass: rgba(10, 10, 26, 0.7);
            --text-primary: #f0f0f5;
            --text-secondary: #b8b8cc;
            --text-muted: #707088;
            --accent-cyan: #00e5ff;
            --accent-cyan-dim: rgba(0, 229, 255, 0.25);
            --accent-magenta: #ff2d95;
            --accent-magenta-dim: rgba(255, 45, 149, 0.2);
            --accent-purple: #8b5cf6;
            --accent-purple-dim: rgba(139, 92, 246, 0.2);
            --accent-green: #00e676;
            --border-subtle: rgba(255, 255, 255, 0.07);
            --border-medium: rgba(255, 255, 255, 0.12);
            --border-glow-cyan: rgba(0, 229, 255, 0.35);
            --border-glow-magenta: rgba(255, 45, 149, 0.3);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow-cyan: 0 0 24px rgba(0, 229, 255, 0.12), 0 0 60px rgba(0, 229, 255, 0.05);
            --shadow-glow-magenta: 0 0 24px rgba(255, 45, 149, 0.1), 0 0 50px rgba(255, 45, 149, 0.04);
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', 'Monaco', monospace;
            --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.45s cubic-bezier(0.25, 0.1, 0.1, 1);
            --max-width: 1260px;
            --max-width-article: 780px;
            --header-height: 70px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(ellipse at 20% 15%, rgba(0, 229, 255, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 60%, rgba(139, 92, 246, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 85%, rgba(255, 45, 149, 0.02) 0%, transparent 50%);
        }

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

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

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

        input,
        textarea {
            font-family: inherit;
        }

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

        .container--article {
            max-width: var(--max-width-article);
        }

        /* ===== HEADER / NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--bg-glass);
            backdrop-filter: blur(18px) saturate(140%);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(10, 10, 26, 0.92);
            border-bottom-color: var(--border-medium);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.35);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            white-space: nowrap;
            position: relative;
            z-index: 1001;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-xs);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.3);
        }

        .logo-text {
            background: linear-gradient(135deg, #00e5ff, #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

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

        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.08);
            box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.2);
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple)) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 10px 22px !important;
            border-radius: var(--radius-sm) !important;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.25);
            gap: 7px;
            margin-left: 4px;
        }

        .nav-cta:hover {
            box-shadow: 0 0 32px rgba(0, 229, 255, 0.4) !important;
            transform: translateY(-1px);
            background: linear-gradient(135deg, #00f0ff, #9b6dff) !important;
        }

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

        .mobile-menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 3px;
            transition: all var(--transition-fast);
            transform-origin: center;
        }

        .mobile-menu-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .mobile-menu-toggle.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .mobile-menu-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* ===== ARTICLE BANNER ===== */
        .article-banner {
            position: relative;
            margin-top: var(--header-height);
            min-height: 420px;
            display: flex;
            align-items: flex-end;
            background: var(--bg-secondary) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top,
                    rgba(6, 6, 15, 0.95) 0%,
                    rgba(6, 6, 15, 0.7) 40%,
                    rgba(6, 6, 15, 0.35) 70%,
                    rgba(6, 6, 15, 0.2) 100%);
            z-index: 1;
        }

        .article-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg,
                    transparent,
                    var(--accent-cyan) 20%,
                    var(--accent-purple) 50%,
                    var(--accent-magenta) 80%,
                    transparent);
            z-index: 3;
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.4), 0 0 60px rgba(139, 92, 246, 0.3);
        }

        .article-banner-content {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 50px 28px 40px;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .article-breadcrumb .separator {
            color: var(--text-muted);
            font-size: 0.7rem;
        }

        .article-breadcrumb .current {
            color: var(--accent-cyan);
            font-weight: 500;
        }

        .article-banner-title {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
        }

        .article-meta-row {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            background: rgba(0, 229, 255, 0.12);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 229, 255, 0.25);
            letter-spacing: 0.03em;
        }

        .article-meta-time {
            font-size: 0.88rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .article-meta-time i {
            color: var(--accent-purple);
            font-size: 0.8rem;
        }

        /* ===== MAIN CONTENT ===== */
        .article-main {
            position: relative;
            z-index: 1;
            padding: 50px 0 60px;
        }

        .article-body {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 44px 48px;
            box-shadow: var(--shadow-md);
            position: relative;
            overflow: hidden;
        }

        .article-body::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 60px;
            background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-purple));
            border-radius: 0 4px 4px 0;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
        }

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

        .article-body-content h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: #fff;
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-subtle);
            letter-spacing: 0.02em;
        }

        .article-body-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 28px 0 12px;
        }

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

        .article-body-content strong {
            color: #fff;
            font-weight: 600;
        }

        .article-body-content a {
            color: var(--accent-cyan);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(0, 229, 255, 0.3);
            transition: text-decoration-color var(--transition-fast);
        }

        .article-body-content a:hover {
            text-decoration-color: var(--accent-cyan);
        }

        .article-body-content blockquote {
            margin: 24px 0;
            padding: 18px 22px;
            border-left: 3px solid var(--accent-cyan);
            background: rgba(0, 229, 255, 0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-primary);
            font-style: italic;
            box-shadow: inset 0 0 20px rgba(0, 229, 255, 0.03);
        }

        .article-body-content ul,
        .article-body-content ol {
            margin: 16px 0;
            padding-left: 24px;
        }

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

        .article-body-content li::marker {
            color: var(--accent-cyan);
        }

        .article-body-content img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-subtle);
        }

        .article-body-content code {
            background: rgba(255, 255, 255, 0.06);
            padding: 2px 8px;
            border-radius: 4px;
            font-family: var(--font-mono);
            font-size: 0.9em;
            color: var(--accent-cyan);
            border: 1px solid var(--border-subtle);
        }

        .article-body-content pre {
            background: rgba(0, 0, 0, 0.4);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            overflow-x: auto;
            margin: 20px 0;
            box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.3);
        }

        .article-body-content pre code {
            background: none;
            padding: 0;
            border: none;
            color: var(--text-secondary);
        }

        .article-body-content hr {
            border: none;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-medium), transparent);
            margin: 32px 0;
        }

        /* Article not found */
        .article-not-found {
            text-align: center;
            padding: 80px 30px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }

        .article-not-found-icon {
            font-size: 4rem;
            color: var(--accent-magenta);
            margin-bottom: 20px;
            opacity: 0.7;
        }

        .article-not-found h2 {
            font-size: 1.8rem;
            color: #fff;
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 28px;
            font-size: 1.05rem;
        }

        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow-cyan);
        }

        .article-not-found .btn-back:hover {
            box-shadow: 0 0 36px rgba(0, 229, 255, 0.35);
            transform: translateY(-2px);
        }

        /* ===== RELATED ARTICLES ===== */
        .related-section {
            position: relative;
            z-index: 1;
            padding: 20px 0 70px;
        }

        .related-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            flex-wrap: wrap;
            gap: 14px;
        }

        .related-title {
            font-size: 1.55rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.02em;
        }

        .related-title::before {
            content: '';
            display: inline-block;
            width: 5px;
            height: 26px;
            background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-purple));
            border-radius: 3px;
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.4);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

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

        .related-card-image {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-secondary);
        }

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

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

        .related-card-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(6, 6, 15, 0.5), transparent 50%);
            pointer-events: none;
        }

        .related-card-body {
            padding: 16px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .related-card-category {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.06em;
        }

        .related-card-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .related-card:hover .related-card-title {
            color: var(--accent-cyan);
        }

        .related-card-time {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: auto;
        }

        .related-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px;
            color: var(--text-muted);
            font-size: 1rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            position: relative;
            z-index: 1;
            padding: 60px 0 70px;
        }

        .cta-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -30%;
            width: 80%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(0, 229, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-panel::after {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-purple), transparent);
            border-radius: 2px;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.3);
        }

        .cta-panel h3 {
            font-size: 1.7rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
            letter-spacing: 0.02em;
        }

        .cta-panel p {
            color: var(--text-secondary);
            margin-bottom: 26px;
            position: relative;
            z-index: 1;
            font-size: 1.05rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta-glow {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            padding: 14px 32px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-glow-cyan);
            position: relative;
            z-index: 1;
            letter-spacing: 0.03em;
        }

        .btn-cta-glow:hover {
            box-shadow: 0 0 40px rgba(0, 229, 255, 0.4), 0 0 70px rgba(139, 92, 246, 0.25);
            transform: translateY(-3px);
            background: linear-gradient(135deg, #00f0ff, #9b6dff);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            position: relative;
            z-index: 1;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 50px 0 0;
        }

        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
            display: grid;
            grid-template-columns: 1.4fr 2fr;
            gap: 40px;
            padding-bottom: 36px;
        }

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

        .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.03em;
            background: linear-gradient(135deg, #00e5ff, #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            max-width: 300px;
        }

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

        .footer-links-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .footer-links-col a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            text-align: center;
            padding: 16px 28px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1200px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 1024px) {
            .article-banner-title {
                font-size: 2rem;
            }
            .article-body {
                padding: 36px 32px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-links-group {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: rgba(10, 10, 26, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 90px 28px 30px;
                gap: 8px;
                transition: right var(--transition-smooth);
                border-left: 1px solid var(--border-subtle);
                box-shadow: -8px 0 30px rgba(0, 0, 0, 0.5);
            }

            .nav-links.open {
                right: 0;
            }

            .nav-links a {
                width: 100%;
                justify-content: flex-start;
                font-size: 1rem;
                padding: 12px 16px;
            }

            .nav-cta {
                justify-content: center !important;
                margin-left: 0;
                margin-top: 8px;
            }

            .article-banner {
                min-height: 300px;
            }
            .article-banner-content {
                padding: 36px 20px 30px;
            }
            .article-banner-title {
                font-size: 1.55rem;
            }
            .article-body {
                padding: 28px 20px;
                border-radius: var(--radius-md);
            }
            .article-body-content {
                font-size: 0.98rem;
            }
            .article-main {
                padding: 36px 0 40px;
            }
            .container {
                padding: 0 16px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .related-title {
                font-size: 1.3rem;
            }
            .cta-panel {
                padding: 36px 22px;
            }
            .cta-panel h3 {
                font-size: 1.35rem;
            }
            .footer-links-group {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-desc {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 0 16px;
            }
            .logo-link {
                font-size: 1.15rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }
            .article-banner {
                min-height: 240px;
            }
            .article-banner-title {
                font-size: 1.3rem;
            }
            .article-banner-content {
                padding: 28px 14px 24px;
            }
            .article-meta-row {
                gap: 10px;
            }
            .article-category-badge {
                font-size: 0.75rem;
                padding: 4px 10px;
            }
            .article-body {
                padding: 22px 16px;
            }
            .article-body::before {
                width: 3px;
                height: 40px;
            }
            .article-body-content {
                font-size: 0.93rem;
                line-height: 1.75;
            }
            .article-body-content h2 {
                font-size: 1.25rem;
            }
            .article-body-content h3 {
                font-size: 1.1rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .related-card-body {
                padding: 12px 14px 14px;
            }
            .related-title {
                font-size: 1.15rem;
            }
            .cta-panel {
                padding: 30px 16px;
                border-radius: var(--radius-md);
            }
            .cta-panel h3 {
                font-size: 1.2rem;
            }
            .cta-panel p {
                font-size: 0.9rem;
            }
            .btn-cta-glow {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .footer-inner {
                padding: 0 16px 28px;
            }
            .footer-links-group {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .footer-bottom {
                font-size: 0.75rem;
                padding: 14px 16px;
            }
            .article-not-found {
                padding: 50px 20px;
            }
            .article-not-found h2 {
                font-size: 1.4rem;
            }
        }

        /* ===== MOBILE MENU OVERLAY ===== */
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .nav-overlay.active {
            display: block;
            opacity: 1;
        }
        @media (min-width: 769px) {
            .nav-overlay {
                display: none !important;
            }
            .nav-links {
                position: static !important;
                width: auto !important;
                height: auto !important;
                background: none !important;
                flex-direction: row !important;
                padding: 0 !important;
                border-left: none !important;
                box-shadow: none !important;
                right: auto !important;
            }
        }