/* roulang page: index */
:root {
            --color-primary: #FF6B35;
            --color-primary-light: #FF8C42;
            --color-primary-glow: rgba(255, 107, 53, 0.45);
            --color-accent: #00E5FF;
            --color-accent-glow: rgba(0, 229, 255, 0.4);
            --color-bg-deep: #08081a;
            --color-bg-surface: #111130;
            --color-bg-card: rgba(20, 20, 50, 0.85);
            --color-bg-card-hover: rgba(28, 28, 62, 0.92);
            --color-text: #f0f0f5;
            --color-text-soft: #b0b0c8;
            --color-text-muted: #7878a0;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-glow: rgba(255, 107, 53, 0.3);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-full: 50px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4), 0 1px 4px rgba(255, 255, 255, 0.03);
            --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.55), 0 2px 8px rgba(255, 107, 53, 0.18);
            --shadow-glow: 0 0 30px rgba(255, 107, 53, 0.3), 0 0 60px rgba(255, 107, 53, 0.1);
            --shadow-accent-glow: 0 0 20px rgba(0, 229, 255, 0.25);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --container-padding: 24px;
            --nav-height: 62px;
        }

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

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

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg-deep);
            background-image:
                radial-gradient(ellipse at 50% 0%, rgba(255, 107, 53, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, rgba(0, 229, 255, 0.04) 0%, transparent 50%),
                radial-gradient(ellipse at 20% 70%, rgba(120, 80, 200, 0.04) 0%, transparent 50%);
            min-height: 100vh;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        /* Header & Navigation - 悬浮胶囊 */
        .site-header {
            position: fixed;
            top: 18px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: auto;
            max-width: calc(100vw - 32px);
        }

        .nav-capsule {
            display: flex;
            align-items: center;
            gap: 28px;
            background: rgba(14, 14, 38, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-full);
            padding: 10px 28px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }

        .nav-capsule:hover {
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.06) inset, var(--shadow-glow);
            border-color: rgba(255, 107, 53, 0.35);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 750;
            font-size: 1.2rem;
            color: #fff;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: 0 4px 16px var(--color-primary-glow);
            flex-shrink: 0;
        }

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

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: var(--radius-full);
            font-weight: 550;
            font-size: 0.95rem;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.3px;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-links a.active {
            color: #fff;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            box-shadow: 0 4px 16px var(--color-primary-glow);
            font-weight: 650;
        }

        .nav-links a .nav-badge {
            display: inline-block;
            font-size: 0.7rem;
            background: var(--color-accent);
            color: #000;
            border-radius: 20px;
            padding: 2px 8px;
            margin-left: 6px;
            font-weight: 700;
            letter-spacing: 0.5px;
            animation: pulse-badge 1.8s ease-in-out infinite;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 var(--color-accent-glow);
            }
            50% {
                box-shadow: 0 0 0 8px transparent;
            }
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.4rem;
            cursor: pointer;
            padding: 6px;
            line-height: 1;
            flex-shrink: 0;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 140px 24px 80px;
            overflow: hidden;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-attachment: fixed;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 8, 26, 0.72) 0%, rgba(8, 8, 26, 0.88) 40%, rgba(8, 8, 26, 0.95) 100%);
            z-index: 1;
        }

        .hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }

        .hero-badge {
            display: inline-block;
            padding: 8px 20px;
            border-radius: var(--radius-full);
            background: rgba(255, 107, 53, 0.15);
            border: 1px solid rgba(255, 107, 53, 0.35);
            color: var(--color-primary-light);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 1px;
            margin-bottom: 24px;
            text-transform: uppercase;
        }

        .hero h1 {
            font-size: clamp(2.4rem, 5vw, 3.8rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--color-primary), #FFB347);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            position: relative;
        }

        .hero p {
            font-size: 1.15rem;
            color: var(--color-text-soft);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: var(--radius-full);
            font-weight: 650;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            border: none;
            letter-spacing: 0.4px;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            box-shadow: 0 6px 24px var(--color-primary-glow);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px var(--color-primary-glow), 0 0 50px rgba(255, 107, 53, 0.2);
        }

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

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(255, 255, 255, 0.08);
        }

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

        /* Sections */
        .section {
            padding: 80px 0;
        }

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

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.25);
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.82rem;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.4rem);
            font-weight: 750;
            color: #fff;
            margin-bottom: 10px;
        }

        .section-header p {
            color: var(--color-text-soft);
            font-size: 1.05rem;
            max-width: 500px;
            margin: 0 auto;
        }

        /* Feature Cards */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 70px;
            height: 3px;
            border-radius: 0 0 6px 6px;
            background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

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

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

        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(255, 107, 53, 0.2), rgba(255, 107, 53, 0.05));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: var(--color-primary-light);
            transition: all var(--transition-smooth);
        }

        .feature-card:hover .feature-icon {
            box-shadow: var(--shadow-glow);
            transform: scale(1.05);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .feature-card p {
            color: var(--color-text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
        }

        /* Category Entry */
        .category-entry {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .category-card-large {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            display: block;
            position: relative;
        }

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

        .category-card-large img {
            width: 100%;
            height: 240px;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .category-card-large:hover img {
            transform: scale(1.04);
        }

        .category-card-body {
            padding: 22px 24px;
        }

        .category-card-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .category-card-body p {
            color: var(--color-text-soft);
            font-size: 0.95rem;
            line-height: 1.5;
        }

        .category-card-body .card-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary-light);
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 10px;
            transition: gap var(--transition-fast);
        }

        .category-card-large:hover .card-arrow {
            gap: 10px;
        }

        /* CMS News List */
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }

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

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

        .news-item .news-thumb {
            width: 100px;
            height: 80px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-surface);
        }

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

        .news-item .news-meta {
            display: flex;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--color-text-muted);
            margin-bottom: 4px;
            flex-wrap: wrap;
        }

        .news-item .news-meta .news-cat {
            color: var(--color-accent);
            font-weight: 600;
        }

        .news-item h4 {
            font-size: 1rem;
            font-weight: 650;
            color: #fff;
            margin-bottom: 4px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-item h4 a {
            color: inherit;
        }
        .news-item h4 a:hover {
            color: var(--color-primary-light);
        }

        .news-item p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-empty {
            text-align: center;
            padding: 40px;
            color: var(--color-text-muted);
            font-size: 1rem;
            grid-column: 1 / -1;
        }

        /* Stats Strip */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }

        .stat-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 30px 20px;
            transition: all var(--transition-smooth);
        }

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

        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-primary), #FFB347);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }

        .stat-label {
            color: var(--color-text-soft);
            font-size: 0.95rem;
            margin-top: 6px;
        }

        /* Hot Recommend */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .recommend-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            position: relative;
        }

        .recommend-card:hover {
            border-color: var(--color-border-glow);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-5px);
        }

        .recommend-card .rec-img-wrap {
            position: relative;
            overflow: hidden;
            height: 180px;
        }

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

        .recommend-card:hover .rec-img-wrap img {
            transform: scale(1.06);
        }

        .recommend-card .rec-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            background: var(--color-primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .recommend-card .rec-body {
            padding: 18px 20px;
        }

        .recommend-card .rec-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .recommend-card .rec-body p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.5;
        }

        /* FAQ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

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

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

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            color: #fff;
            font-weight: 650;
            font-size: 1rem;
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            text-align: left;
            line-height: 1.5;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--color-primary-light);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-answer {
            padding: 0 22px 18px;
            color: var(--color-text-soft);
            font-size: 0.9rem;
            line-height: 1.7;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

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

        .faq-item.open {
            border-color: var(--color-border-glow);
            box-shadow: var(--shadow-glow);
        }

        /* CTA Section */
        .cta-section {
            text-align: center;
            padding: 70px 24px;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            position: relative;
            border-radius: var(--radius-lg);
            margin: 0 var(--container-padding) 40px;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(8, 8, 26, 0.82);
            z-index: 1;
            border-radius: var(--radius-lg);
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 2;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 750;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: var(--color-text-soft);
            margin-bottom: 26px;
            font-size: 1.05rem;
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            border-top: 1px solid var(--color-border);
            padding: 40px 0;
            text-align: center;
            color: var(--color-text-muted);
            font-size: 0.9rem;
        }

        .footer-links {
            display: flex;
            gap: 24px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

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

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

        .footer-brand {
            font-weight: 700;
            color: #fff;
            font-size: 1rem;
            margin-bottom: 8px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-entry {
                grid-template-columns: 1fr;
            }
            .news-list {
                grid-template-columns: 1fr 1fr;
            }
            .nav-capsule {
                gap: 16px;
                padding: 10px 18px;
            }
            .nav-links a {
                padding: 8px 13px;
                font-size: 0.88rem;
            }
        }

        @media (max-width: 768px) {
            .nav-capsule {
                gap: 10px;
                padding: 8px 14px;
                border-radius: var(--radius-md);
            }
            .nav-logo {
                font-size: 1rem;
            }
            .nav-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
                border-radius: 8px;
            }
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .nav-links.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: calc(100% + 10px);
                left: 0;
                right: 0;
                background: rgba(14, 14, 38, 0.95);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border-radius: var(--radius-md);
                border: 1px solid var(--color-border);
                padding: 12px;
                gap: 4px;
            }
            .nav-links.mobile-open a {
                display: block;
                text-align: center;
                padding: 12px;
                border-radius: var(--radius-sm);
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
            .stats-strip {
                grid-template-columns: 1fr 1fr;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .hero {
                min-height: 80vh;
                padding: 120px 20px 60px;
                background-attachment: scroll;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .btn {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
            .section {
                padding: 50px 0;
            }
            .cta-section {
                margin: 0 12px 30px;
                padding: 50px 18px;
                border-radius: var(--radius-md);
            }
            .cta-section::before {
                border-radius: var(--radius-md);
            }
            .news-item {
                flex-direction: column;
                gap: 10px;
            }
            .news-item .news-thumb {
                width: 100%;
                height: 140px;
            }
        }

        @media (max-width: 520px) {
            .nav-capsule {
                padding: 8px 12px;
                gap: 6px;
                border-radius: var(--radius-sm);
            }
            .nav-logo {
                font-size: 0.9rem;
            }
            .nav-logo .logo-icon {
                width: 26px;
                height: 26px;
                font-size: 0.8rem;
                border-radius: 6px;
            }
            .stats-strip {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .hero {
                min-height: 70vh;
                padding: 100px 16px 40px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .footer-links {
                gap: 12px;
                font-size: 0.82rem;
            }
            .recommend-card .rec-img-wrap {
                height: 150px;
            }
            .cta-section {
                margin: 0 8px 20px;
                padding: 40px 14px;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #FF5E14;
            --color-primary-glow: #FF7429;
            --color-secondary: #00E5FF;
            --color-bg: #070714;
            --color-surface: #12122A;
            --color-surface-light: #1B1B3A;
            --color-text: #FFFFFF;
            --color-text-muted: rgba(255,255,255,0.7);
            --color-text-soft: rgba(255,255,255,0.5);
            --color-border: rgba(255,255,255,0.1);
            --radius-xl: 22px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-glow: 0 0 18px rgba(0,229,255,0.35);
            --shadow-card: 0 8px 30px rgba(0,0,0,0.6);
            --font-main: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-main);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 悬浮胶囊导航 */
        .site-header {
            position: sticky;
            top: 18px;
            z-index: 100;
            padding: 0 20px;
            margin-bottom: 20px;
            display: flex;
            justify-content: center;
            pointer-events: none;
        }

        .nav-capsule {
            pointer-events: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(20, 20, 48, 0.8);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: 100px;
            padding: 8px 24px;
            width: 100%;
            max-width: 700px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.5);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--color-text);
            font-weight: 700;
            font-size: 1.2rem;
            white-space: nowrap;
        }

        .logo-icon {
            color: var(--color-primary);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px var(--color-primary-glow));
        }

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

        .nav-links a {
            color: var(--color-text-muted);
            text-decoration: none;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 40px;
            transition: var(--transition);
            position: relative;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(255,255,255,0.08);
        }

        .nav-links a.active {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 0 14px var(--color-primary-glow);
        }

        .nav-badge {
            background: var(--color-secondary);
            color: #000;
            font-size: 0.7rem;
            padding: 2px 7px;
            border-radius: 20px;
            margin-left: 4px;
            font-weight: 700;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--color-text);
            font-size: 1.6rem;
            cursor: pointer;
        }

        /* 内页文章 Hero */
        .article-hero {
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            position: relative;
            padding: 80px 0 60px;
            margin-bottom: 40px;
            border-radius: 0 0 40px 40px;
            overflow: hidden;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7,7,20,0.4) 0%, rgba(7,7,20,0.95) 100%);
        }

        .article-hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .article-category {
            display: inline-block;
            background: var(--color-primary);
            color: #fff;
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            box-shadow: 0 0 20px rgba(255,94,20,0.5);
        }

        .article-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            text-shadow: 0 4px 20px rgba(0,0,0,0.7);
        }

        .article-meta {
            color: var(--color-text-muted);
            font-size: 0.95rem;
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
        }

        .article-body {
            padding: 0 0 80px;
        }

        .content-wrapper {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: 40px 48px;
            box-shadow: var(--shadow-card);
        }

        .article-content {
            font-size: 1.08rem;
            line-height: 1.8;
            color: var(--color-text-muted);
        }

        .article-content h2 {
            color: var(--color-text);
            margin: 36px 0 16px;
            font-size: 1.6rem;
        }

        .article-content h3 {
            color: var(--color-text);
            margin: 28px 0 12px;
        }

        .article-content p {
            margin-bottom: 20px;
        }

        .article-content img {
            max-width: 100%;
            border-radius: var(--radius-md);
            margin: 20px 0;
        }

        .share-bar {
            display: flex;
            gap: 12px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
        }

        .share-btn {
            background: var(--color-surface-light);
            border: none;
            color: #fff;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            cursor: pointer;
        }

        .share-btn:hover {
            background: var(--color-primary);
            box-shadow: 0 0 15px var(--color-primary-glow);
        }

        .related-section {
            margin-top: 70px;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }

        .related-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: 0 8px 20px rgba(0,0,0,0.4);
            border: 1px solid var(--color-border);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 15px 30px rgba(0,229,255,0.25);
        }

        .related-img {
            height: 160px;
            background-size: cover;
            background-position: center;
        }

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

        .related-card-body h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-card-body h3 a {
            color: #fff;
            text-decoration: none;
        }

        .related-card-body h3 a:hover {
            color: var(--color-secondary);
        }

        .related-meta {
            font-size: 0.8rem;
            color: var(--color-text-soft);
        }

        .not-found {
            text-align: center;
            padding: 100px 20px;
            color: var(--color-text-muted);
        }

        .not-found h2 {
            font-size: 2rem;
            margin-bottom: 20px;
        }

        .back-home-btn {
            display: inline-block;
            background: var(--color-primary);
            color: #fff;
            padding: 12px 30px;
            border-radius: 40px;
            text-decoration: none;
            font-weight: 600;
            margin-top: 24px;
            transition: var(--transition);
        }

        .back-home-btn:hover {
            background: var(--color-primary-glow);
            box-shadow: 0 0 20px var(--color-primary-glow);
        }

        /* 页脚 */
        .site-footer {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            padding: 40px 0;
            margin-top: auto;
            text-align: center;
        }

        .footer-brand {
            font-weight: 700;
            font-size: 1.3rem;
            margin-bottom: 16px;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 28px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .footer-links a {
            color: var(--color-text-muted);
            text-decoration: none;
            transition: var(--transition);
        }

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

        /* 响应式 */
        @media (max-width: 1024px) {
            .article-title {
                font-size: 2.2rem;
            }
            .content-wrapper {
                padding: 28px 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-capsule {
                padding: 8px 16px;
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 6px 12px;
                font-size: 0.9rem;
            }
            .article-hero {
                padding: 60px 0 40px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .nav-capsule {
                border-radius: 30px;
                padding: 6px 14px;
            }
            .nav-logo span {
                font-size: 1rem;
            }
            .nav-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 20px;
                right: 20px;
                background: var(--color-surface);
                border-radius: 20px;
                flex-direction: column;
                padding: 16px;
                box-shadow: var(--shadow-card);
            }
            .nav-links.open {
                display: flex;
            }
            .article-title {
                font-size: 1.8rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #f0a500;
            --color-primary-hover: #ffbb2e;
            --color-primary-glow: rgba(240, 165, 0, 0.35);
            --color-secondary: #3a86ff;
            --color-secondary-hover: #5a9fff;
            --color-accent: #ff5e3a;
            --color-accent-hover: #ff7b5f;
            --color-bg: #0a0e17;
            --color-bg-alt: #0d1220;
            --color-surface: #141a26;
            --color-surface-hover: #1a2232;
            --color-surface-elevated: #1c2435;
            --color-text: #e8edf5;
            --color-text-secondary: #c5cdd8;
            --color-text-muted: #7d8899;
            --color-border: #252d3d;
            --color-border-light: #2e374a;
            --color-success: #22c55e;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --color-live: #ff3b3b;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 9999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 8px 36px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 28px rgba(240, 165, 0, 0.25);
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --nav-height: 62px;
            --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;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 15px;
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            outline: none;
        }
        input,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-text);
        }

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 32px);
            max-width: 820px;
            pointer-events: none;
        }
        .nav-capsule {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(20, 26, 38, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-full);
            padding: 8px 10px 8px 20px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
            pointer-events: auto;
            transition: all var(--transition);
        }
        .nav-capsule.scrolled {
            background: rgba(14, 18, 26, 0.94);
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 700;
            font-size: 1.08rem;
            color: var(--color-text);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }
        .nav-logo:hover {
            color: var(--color-primary);
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--color-primary), #e08900);
            color: #0a0e17;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            position: relative;
            padding: 9px 16px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-links a:hover {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-links a.active {
            color: #0a0e17;
            background: var(--color-primary);
            font-weight: 600;
            box-shadow: var(--shadow-glow);
        }
        .nav-links a.active:hover {
            background: var(--color-primary-hover);
            color: #0a0e17;
        }
        .nav-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.66rem;
            font-weight: 700;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-full);
            padding: 2px 7px;
            margin-left: 3px;
            line-height: 1;
            animation: badgePulse 2.2s ease-in-out infinite;
        }
        @keyframes badgePulse {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.15);
            }
        }
        .nav-toggle {
            display: none;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-full);
            align-items: center;
            justify-content: center;
            color: var(--color-text);
            font-size: 1.15rem;
            transition: all var(--transition-fast);
            pointer-events: auto;
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--color-primary);
        }

        @media (max-width: 768px) {
            .site-header {
                top: 10px;
                width: calc(100% - 20px);
                max-width: 100%;
            }
            .nav-capsule {
                padding: 8px 8px 8px 16px;
                border-radius: var(--radius-xl);
            }
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                flex-direction: column;
                background: rgba(16, 22, 34, 0.98);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                padding: 80px 24px 40px;
                gap: 4px;
                transition: right var(--transition-slow);
                z-index: 999;
                border-left: 1px solid var(--color-border);
                box-shadow: -8px 0 32px rgba(0, 0, 0, 0.5);
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links a {
                display: block;
                padding: 12px 18px;
                border-radius: var(--radius);
                font-size: 0.95rem;
                width: 100%;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-overlay {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.55);
                z-index: 998;
            }
            .nav-overlay.show {
                display: block;
            }
        }
        @media (max-width: 520px) {
            .nav-capsule {
                padding: 7px 7px 7px 14px;
                border-radius: var(--radius-lg);
            }
            .nav-logo {
                font-size: 0.95rem;
                gap: 6px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.75rem;
            }
            .nav-links {
                width: 260px;
                padding: 70px 18px 30px;
            }
            .site-header {
                top: 6px;
                width: calc(100% - 12px);
            }
        }

        /* ========== CATEGORY BANNER ========== */
        .category-banner {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-attachment: fixed;
            overflow: hidden;
            padding: 140px 24px 80px;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 23, 0.7) 0%, rgba(10, 14, 23, 0.88) 60%, rgba(10, 14, 23, 0.97) 100%);
            z-index: 1;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 40%, rgba(240, 165, 0, 0.12) 0%, transparent 70%);
            z-index: 2;
        }
        .banner-content {
            position: relative;
            z-index: 3;
            max-width: 700px;
            margin: 0 auto;
        }
        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--color-text-muted);
            margin-bottom: 18px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .sep {
            color: var(--color-text-muted);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 600;
        }
        .banner-content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            margin-bottom: 14px;
            color: #fff;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }
        .banner-content h1 .highlight {
            color: var(--color-primary);
            position: relative;
        }
        .banner-content .banner-desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 500px;
            margin: 0 auto 22px;
            line-height: 1.6;
        }
        .banner-stats {
            display: flex;
            gap: 28px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .banner-stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-full);
            padding: 8px 18px;
        }
        .banner-stat-item i {
            color: var(--color-primary);
            font-size: 0.85rem;
        }
        .banner-stat-item .stat-num {
            font-weight: 700;
            color: #fff;
            font-size: 1rem;
        }
        .live-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-live);
            animation: livePulse 1.4s ease-in-out infinite;
            margin-right: 3px;
        }
        @keyframes livePulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 59, 59, 0.7);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(255, 59, 59, 0);
            }
        }

        @media (max-width: 768px) {
            .category-banner {
                min-height: 340px;
                padding: 120px 20px 60px;
                background-attachment: scroll;
            }
            .banner-content h1 {
                font-size: 1.9rem;
            }
            .banner-content .banner-desc {
                font-size: 0.92rem;
            }
            .banner-stats {
                gap: 14px;
            }
            .banner-stat-item {
                font-size: 0.78rem;
                padding: 6px 14px;
            }
        }
        @media (max-width: 520px) {
            .category-banner {
                min-height: 300px;
                padding: 105px 16px 50px;
            }
            .banner-content h1 {
                font-size: 1.55rem;
            }
            .banner-content .banner-desc {
                font-size: 0.84rem;
            }
            .banner-stats {
                gap: 10px;
            }
            .banner-stat-item {
                font-size: 0.72rem;
                padding: 5px 11px;
                gap: 5px;
            }
        }

        /* ========== SUB-CATEGORY FILTER ========== */
        .filter-section {
            background: var(--color-bg-alt);
            border-bottom: 1px solid var(--color-border);
            padding: 0;
            position: sticky;
            top: calc(var(--nav-height) + 24px);
            z-index: 50;
        }
        .filter-inner {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            flex-wrap: nowrap;
        }
        .filter-inner::-webkit-scrollbar {
            display: none;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.84rem;
            font-weight: 500;
            white-space: nowrap;
            cursor: pointer;
            background: var(--color-surface);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
            user-select: none;
            flex-shrink: 0;
        }
        .filter-tag:hover {
            background: var(--color-surface-hover);
            color: var(--color-text);
            border-color: var(--color-border-light);
        }
        .filter-tag.active {
            background: var(--color-primary);
            color: #0a0e17;
            border-color: var(--color-primary);
            font-weight: 600;
            box-shadow: var(--shadow-glow);
        }
        .filter-tag .tag-count {
            font-size: 0.7rem;
            background: rgba(255, 255, 255, 0.15);
            padding: 2px 7px;
            border-radius: var(--radius-full);
            font-weight: 600;
        }
        .filter-tag.active .tag-count {
            background: rgba(0, 0, 0, 0.18);
        }
        .filter-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            padding: 8px 16px;
            flex-shrink: 0;
            margin-left: auto;
            transition: all var(--transition-fast);
            min-width: 180px;
        }
        .filter-search:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px var(--color-primary-glow);
        }
        .filter-search input {
            background: none;
            border: none;
            outline: none;
            color: var(--color-text);
            width: 100%;
            font-size: 0.84rem;
        }
        .filter-search input::placeholder {
            color: var(--color-text-muted);
        }
        .filter-search i {
            color: var(--color-text-muted);
            font-size: 0.85rem;
        }

        @media (max-width: 768px) {
            .filter-section {
                top: calc(var(--nav-height) + 14px);
            }
            .filter-inner {
                gap: 7px;
                padding: 10px 0;
            }
            .filter-tag {
                padding: 7px 13px;
                font-size: 0.78rem;
            }
            .filter-search {
                min-width: 140px;
                padding: 7px 13px;
            }
        }
        @media (max-width: 520px) {
            .filter-section {
                top: calc(var(--nav-height) + 8px);
            }
            .filter-inner {
                gap: 5px;
                padding: 8px 0;
            }
            .filter-tag {
                padding: 6px 11px;
                font-size: 0.73rem;
            }
            .filter-search {
                min-width: 110px;
                padding: 6px 10px;
                font-size: 0.73rem;
            }
        }

        /* ========== MAIN LAYOUT ========== */
        .category-main {
            padding: 48px 0 60px;
            background: var(--color-bg);
        }
        .category-grid-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 36px;
            align-items: start;
        }

        @media (max-width: 1024px) {
            .category-grid-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        /* ========== ARTICLE CARDS ========== */
        .articles-section-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 22px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .articles-section-title h2 {
            font-size: 1.3rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .articles-section-title h2 i {
            color: var(--color-primary);
            font-size: 1rem;
        }
        .articles-sort {
            display: flex;
            gap: 4px;
        }
        .articles-sort button {
            padding: 7px 14px;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
            cursor: pointer;
            background: transparent;
            border: 1px solid transparent;
        }
        .articles-sort button:hover {
            color: var(--color-text);
            background: var(--color-surface);
        }
        .articles-sort button.active-sort {
            color: #fff;
            background: var(--color-surface);
            border-color: var(--color-border);
            font-weight: 600;
        }
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .article-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            cursor: pointer;
            position: relative;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border-light);
            background: var(--color-surface-hover);
        }
        .article-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .article-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .card-img-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            z-index: 2;
            letter-spacing: 0.03em;
        }
        .card-img-badge.hot {
            background: var(--color-accent);
            animation: badgePulse 2.2s ease-in-out infinite;
        }
        .card-img-badge.new {
            background: var(--color-secondary);
        }
        .card-img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(10, 14, 23, 0.6) 0%, transparent 45%);
            z-index: 1;
        }
        .article-card .card-body {
            padding: 18px 18px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body .card-category-label {
            display: inline-block;
            font-size: 0.72rem;
            color: var(--color-primary);
            font-weight: 600;
            margin-bottom: 8px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .card-body h3 {
            font-size: 1.02rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--color-text);
            transition: color var(--transition-fast);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card:hover .card-body h3 {
            color: var(--color-primary);
        }
        .card-body .card-excerpt {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            line-height: 1.5;
            margin-bottom: 12px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.76rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .card-meta i {
            font-size: 0.7rem;
        }
        .card-meta .meta-views {
            color: var(--color-primary);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .articles-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .article-card .card-body {
                padding: 14px 14px 13px;
            }
            .card-body h3 {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .articles-grid {
                gap: 12px;
            }
            .article-card .card-img-wrap {
                aspect-ratio: 16 / 9;
            }
            .card-body h3 {
                font-size: 0.88rem;
            }
            .card-body .card-excerpt {
                font-size: 0.76rem;
            }
            .card-meta {
                font-size: 0.7rem;
                gap: 10px;
            }
        }

        /* ========== PAGINATION ========== */
        .pagination-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .pagination-wrap .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border-radius: var(--radius-full);
            font-size: 0.84rem;
            font-weight: 500;
            background: var(--color-surface);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .pagination-wrap .page-btn:hover {
            background: var(--color-surface-hover);
            color: var(--color-text);
            border-color: var(--color-border-light);
        }
        .pagination-wrap .page-btn.active-page {
            background: var(--color-primary);
            color: #0a0e17;
            border-color: var(--color-primary);
            font-weight: 700;
            box-shadow: var(--shadow-glow);
        }
        .pagination-wrap .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 130px;
        }
        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            padding: 20px;
        }
        .sidebar-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i {
            color: var(--color-primary);
            font-size: 0.8rem;
        }
        .rank-list .rank-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 9px 0;
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-fast);
            cursor: pointer;
            border-radius: var(--radius-sm);
            margin: 0 -6px;
            padding-left: 6px;
            padding-right: 6px;
        }
        .rank-list .rank-item:last-child {
            border-bottom: none;
        }
        .rank-list .rank-item:hover {
            background: var(--color-surface-hover);
        }
        .rank-num {
            width: 26px;
            height: 26px;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.78rem;
            flex-shrink: 0;
            background: var(--color-bg-alt);
            color: var(--color-text-muted);
        }
        .rank-item:nth-child(1) .rank-num {
            background: linear-gradient(135deg, #f0a500, #e08900);
            color: #0a0e17;
        }
        .rank-item:nth-child(2) .rank-num {
            background: linear-gradient(135deg, #a0aab4, #7d8899);
            color: #0a0e17;
        }
        .rank-item:nth-child(3) .rank-num {
            background: linear-gradient(135deg, #c0763a, #8b4f24);
            color: #fff;
        }
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-info .rank-title {
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--color-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color var(--transition-fast);
        }
        .rank-item:hover .rank-title {
            color: var(--color-primary);
        }
        .rank-info .rank-views {
            font-size: 0.7rem;
            color: var(--color-text-muted);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 7px;
        }
        .tag-cloud .cloud-tag {
            padding: 5px 12px;
            border-radius: var(--radius-full);
            font-size: 0.74rem;
            background: var(--color-bg-alt);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .tag-cloud .cloud-tag:hover {
            background: var(--color-primary);
            color: #0a0e17;
            border-color: var(--color-primary);
        }
        .live-status-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            font-size: 0.8rem;
            color: var(--color-text-secondary);
        }
        .live-status-bar .live-indicator {
            display: flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--color-live);
        }

        @media (max-width: 1024px) {
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .sidebar-card {
                padding: 16px;
            }
        }
        @media (max-width: 768px) {
            .sidebar {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .sidebar-card {
                padding: 14px;
            }
        }
        @media (max-width: 520px) {
            .sidebar {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }

        /* ========== TIMELINE SECTION ========== */
        .timeline-section {
            background: var(--color-bg-alt);
            padding: 56px 0;
        }
        .timeline-section .section-header {
            text-align: center;
            margin-bottom: 36px;
        }
        .timeline-section .section-header h2 {
            font-size: 1.5rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .timeline-section .section-header h2 i {
            color: var(--color-primary);
        }
        .timeline-list {
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            padding-left: 36px;
        }
        .timeline-list::before {
            content: '';
            position: absolute;
            left: 16px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: var(--color-border);
            border-radius: 1px;
        }
        .timeline-item {
            position: relative;
            padding: 0 0 28px 28px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -22px;
            top: 5px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-primary);
            box-shadow: 0 0 10px var(--color-primary-glow);
            z-index: 2;
        }
        .timeline-item .tl-time {
            font-size: 0.74rem;
            color: var(--color-text-muted);
            margin-bottom: 4px;
            font-weight: 500;
        }
        .timeline-item .tl-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text);
            transition: color var(--transition-fast);
            cursor: pointer;
        }
        .timeline-item .tl-title:hover {
            color: var(--color-primary);
        }
        .timeline-item .tl-desc {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 3px;
        }

        @media (max-width: 520px) {
            .timeline-list {
                padding-left: 24px;
            }
            .timeline-list::before {
                left: 10px;
            }
            .timeline-item {
                padding: 0 0 22px 20px;
            }
            .timeline-item::before {
                left: -15px;
                width: 8px;
                height: 8px;
            }
            .timeline-item .tl-title {
                font-size: 0.85rem;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(160deg, var(--color-surface-elevated) 0%, var(--color-bg) 100%);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: #fff;
        }
        .cta-inner p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            line-height: 1.6;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
            cursor: pointer;
            letter-spacing: 0.02em;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #0a0e17;
            border-color: var(--color-primary);
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(240, 165, 0, 0.4);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-text);
            border-color: var(--color-border-light);
        }
        .btn-outline:hover {
            background: var(--color-surface);
            border-color: var(--color-text-muted);
            color: #fff;
        }
        .btn-group {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 520px) {
            .cta-section {
                padding: 40px 0;
            }
            .cta-inner h2 {
                font-size: 1.3rem;
            }
            .cta-inner p {
                font-size: 0.84rem;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.82rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 56px 0;
            background: var(--color-bg);
        }
        .faq-section .section-header {
            text-align: center;
            margin-bottom: 32px;
        }
        .faq-section .section-header h2 {
            font-size: 1.5rem;
            font-weight: 700;
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--color-border-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--color-text);
            gap: 12px;
            user-select: none;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: var(--color-surface-hover);
        }
        .faq-question i {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
            font-size: 0.84rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 20px 16px;
        }

        @media (max-width: 520px) {
            .faq-question {
                padding: 13px 15px;
                font-size: 0.84rem;
            }
            .faq-answer {
                padding: 0 15px;
                font-size: 0.78rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 15px 14px;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-surface-elevated);
            border-top: 1px solid var(--color-border);
            padding: 36px 0;
            text-align: center;
        }
        .footer-brand {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .footer-links {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }
        .footer-links a {
            font-size: 0.84rem;
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--color-primary);
        }
        .site-footer p {
            color: var(--color-text-muted);
            font-size: 0.78rem;
        }

        @media (max-width: 520px) {
            .site-footer {
                padding: 26px 0;
            }
            .footer-links {
                gap: 14px;
            }
            .footer-links a {
                font-size: 0.76rem;
            }
            .site-footer p {
                font-size: 0.7rem;
            }
        }

        /* ========== UTILITY ========== */
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

        /* ========== SCROLL TO TOP ========== */
        .scroll-top-btn {
            position: fixed;
            bottom: 28px;
            right: 28px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #0a0e17;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            box-shadow: var(--shadow-lg);
            z-index: 90;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
        }
        .scroll-top-btn.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .scroll-top-btn:hover {
            background: var(--color-primary-hover);
            transform: translateY(-3px);
        }