/* roulang page: index */
:root {
            --bg-primary: #08090f;
            --bg-secondary: #0d1117;
            --bg-card: #141820;
            --bg-card-hover: #1a1f2b;
            --bg-nav: rgba(8, 9, 15, 0.94);
            --text-primary: #e8eaed;
            --text-secondary: #b0b5be;
            --text-muted: #6e737d;
            --accent-cyan: #00e5ff;
            --accent-magenta: #ff2d95;
            --accent-cyan-glow: rgba(0, 229, 255, 0.25);
            --accent-magenta-glow: rgba(255, 45, 149, 0.25);
            --border-subtle: #1e2430;
            --border-card: #232936;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
            --shadow-neon-cyan: 0 0 20px rgba(0, 229, 255, 0.15), 0 0 60px rgba(0, 229, 255, 0.05);
            --shadow-neon-magenta: 0 0 20px rgba(255, 45, 149, 0.15), 0 0 60px rgba(255, 45, 149, 0.05);
            --shadow-glow-card: 0 0 24px rgba(0, 229, 255, 0.08), 0 4px 20px rgba(0, 0, 0, 0.5);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
            --container-max: 1260px;
            --container-padding: 24px;
            --nav-height: 64px;
        }

        *,
        *::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: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            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;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        .site-header.scrolled {
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 229, 255, 0.06);
        }

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

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: 0.5px;
            color: var(--text-primary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
        }

        .logo-link:hover {
            color: var(--accent-cyan);
            text-shadow: 0 0 18px var(--accent-cyan-glow);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), #0098b0);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 800;
            color: #000;
            box-shadow: 0 0 14px var(--accent-cyan-glow);
            flex-shrink: 0;
        }

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

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.94rem;
            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(--accent-cyan);
            background: rgba(0, 229, 255, 0.08);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.12);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan-glow);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            padding: 9px 22px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--accent-magenta), #d42070);
            color: #fff;
            box-shadow: 0 0 16px var(--accent-magenta-glow);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 0 28px rgba(255, 45, 149, 0.4);
            transform: translateY(-1px);
        }

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

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

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

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

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

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg-secondary);
            z-index: 999;
            flex-direction: column;
            padding: 20px var(--container-padding);
            gap: 8px;
            overflow-y: auto;
        }

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

        .mobile-menu a {
            display: block;
            padding: 14px 20px;
            border-radius: var(--radius-md);
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            background: var(--bg-card);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.07);
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.08);
        }

        /* ===== HERO ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding-top: var(--nav-height);
            overflow: hidden;
            background: var(--bg-primary);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.35;
            filter: brightness(0.55) saturate(1.2);
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 9, 15, 0.3) 0%, rgba(8, 9, 15, 0.75) 50%, var(--bg-primary) 100%);
            z-index: 1;
        }

        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(0, 229, 255, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 70% 60%, rgba(255, 45, 149, 0.06) 0%, transparent 55%);
            z-index: 2;
        }

        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 700px;
            padding: 40px 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            background: rgba(0, 229, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 229, 255, 0.2);
            margin-bottom: 22px;
            animation: pulse-badge 3s ease-in-out infinite;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 10px rgba(0, 229, 255, 0.15);
            }
            50% {
                box-shadow: 0 0 24px rgba(0, 229, 255, 0.3);
            }
        }

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

        @keyframes glow-dot {
            0%,
            100% {
                box-shadow: 0 0 6px var(--accent-cyan-glow);
            }
            50% {
                box-shadow: 0 0 18px rgba(0, 229, 255, 0.5);
            }
        }

        .hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
            color: #fff;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), #4df0ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            position: relative;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
            max-width: 560px;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 26px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-cyan), #0098b0);
            color: #000;
            box-shadow: 0 0 20px var(--accent-cyan-glow);
            font-weight: 700;
        }

        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(0, 229, 255, 0.4);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1.5px solid var(--border-card);
            box-shadow: none;
        }

        .btn-outline:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.1);
            background: rgba(0, 229, 255, 0.04);
        }

        .btn-magenta {
            background: linear-gradient(135deg, var(--accent-magenta), #d42070);
            color: #fff;
            box-shadow: 0 0 18px var(--accent-magenta-glow);
        }

        .btn-magenta:hover {
            box-shadow: 0 0 30px rgba(255, 45, 149, 0.4);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 15px 34px;
            font-size: 1.08rem;
            border-radius: 28px;
        }

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

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

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--accent-cyan);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 0.98rem;
            max-width: 520px;
            margin: 0 auto;
        }

        /* ===== FEATURES GRID ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

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

        .feature-card:hover {
            border-color: rgba(0, 229, 255, 0.3);
            box-shadow: var(--shadow-glow-card);
            transform: translateY(-3px);
            background: var(--bg-card-hover);
        }

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

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            background: rgba(0, 229, 255, 0.08);
            color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.06);
        }

        .feature-card h3 {
            font-size: 1.08rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== CATEGORY ENTRY CARDS ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .category-entry-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 16 / 10;
            cursor: pointer;
            transition: all var(--transition-base);
            border: 1px solid var(--border-card);
            background: var(--bg-card);
        }

        .category-entry-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow-card);
            border-color: rgba(0, 229, 255, 0.35);
        }

        .category-entry-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
            opacity: 0.7;
        }

        .category-entry-card:hover img {
            transform: scale(1.05);
            opacity: 0.85;
        }

        .category-entry-card .card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(8, 9, 15, 0.9) 0%, rgba(8, 9, 15, 0.3) 60%, rgba(8, 9, 15, 0.05) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 24px;
        }

        .category-entry-card .card-tag {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 12px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(0, 229, 255, 0.15);
            color: var(--accent-cyan);
            margin-bottom: 8px;
            width: fit-content;
        }

        .category-entry-card .card-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .category-entry-card .card-sub {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        /* ===== STATS ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-item {
            padding: 30px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            transition: all var(--transition-base);
        }

        .stat-item:hover {
            box-shadow: var(--shadow-glow-card);
            border-color: rgba(0, 229, 255, 0.2);
        }

        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), #fff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ===== CMS NEWS LIST ===== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

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

        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow-card);
            border-color: rgba(0, 229, 255, 0.25);
        }

        .news-card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-secondary);
        }

        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
            opacity: 0.75;
        }

        .news-card:hover .news-card-img img {
            transform: scale(1.04);
            opacity: 0.9;
        }

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

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .news-card-meta .meta-tag {
            padding: 3px 10px;
            border-radius: 10px;
            font-size: 0.74rem;
            font-weight: 600;
            background: rgba(0, 229, 255, 0.08);
            color: var(--accent-cyan);
        }

        .news-card h4 {
            font-size: 1.02rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.4;
            flex: 1;
        }

        .news-card h4 a:hover {
            color: var(--accent-cyan);
        }

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

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 50px;
            color: var(--text-muted);
            font-size: 1rem;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-card);
        }

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

        .process-steps::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--border-card);
            z-index: 0;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 12px;
        }

        .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--border-card);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin: 0 auto 16px;
            transition: all var(--transition-base);
            position: relative;
        }

        .process-step:hover .step-circle {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px var(--accent-cyan-glow);
            background: rgba(0, 229, 255, 0.06);
        }

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

        .process-step p {
            font-size: 0.84rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.25);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            color: #fff;
            font-size: 1rem;
            gap: 12px;
            user-select: none;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--accent-cyan);
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(0, 229, 255, 0.16);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 22px 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            text-align: center;
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 229, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.1rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
        }

        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1rem;
            position: relative;
        }

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

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 40px 0 28px;
            color: var(--text-muted);
            font-size: 0.88rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 30px;
        }

        .footer-brand .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .footer-brand p {
            font-size: 0.84rem;
            line-height: 1.6;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-col a {
            display: block;
            padding: 4px 0;
            color: var(--text-muted);
            font-size: 0.84rem;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .process-steps::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-cta-btn {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .hero {
                min-height: 70vh;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .section {
                padding: 50px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .hero {
                min-height: 60vh;
            }
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero-btns {
                flex-direction: column;
                gap: 10px;
            }
            .hero-btns .btn {
                width: 100%;
                justify-content: center;
            }
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 36px 0;
            }
            .btn {
                padding: 11px 20px;
                font-size: 0.9rem;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #00d4ff;
            --color-primary-glow: rgba(0, 212, 255, 0.45);
            --color-secondary: #7b2fff;
            --color-secondary-glow: rgba(123, 47, 255, 0.5);
            --color-accent: #ff3c78;
            --color-bg-dark: #0a0a14;
            --color-nav-bg: #0d0d1a;
            --color-card-bg: #ffffff;
            --color-body-bg: #f5f6fa;
            --color-text: #1a1a2e;
            --color-text-weak: #6b7280;
            --color-text-light: #9ca3af;
            --color-border: #e5e7eb;
            --color-border-light: #f0f1f5;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.09);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 28px rgba(0, 212, 255, 0.22);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --max-width: 1200px;
            --article-max-width: 820px;
            --nav-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;
        }

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

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

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

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-nav-bg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.35);
            height: var(--nav-height);
        }

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

        .nav-logo {
            font-size: 1.25rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: #ffffff;
            white-space: nowrap;
            position: relative;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: 0 0 18px rgba(0, 212, 255, 0.35);
        }

        .nav-logo .logo-text {
            background: linear-gradient(135deg, #ffffff 30%, #c8eaff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .nav-links a {
            color: #bcc4d0;
            padding: 10px 18px;
            border-radius: 26px;
            font-size: 0.95rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
            position: relative;
            white-space: nowrap;
        }

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

        .nav-links a.active {
            color: #ffffff;
            background: rgba(0, 212, 255, 0.1);
            text-shadow: 0 0 18px var(--color-primary-glow);
            box-shadow: inset 0 0 0 1px rgba(0, 212, 255, 0.25);
        }

        .nav-cta-btn {
            background: linear-gradient(135deg, var(--color-primary), #00a8cc) !important;
            color: #0a0a14 !important;
            font-weight: 700 !important;
            padding: 10px 22px !important;
            border-radius: 26px !important;
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.4), 0 4px 14px rgba(0, 0, 0, 0.3) !important;
            letter-spacing: 0.03em !important;
            transition: all var(--transition-normal) !important;
            margin-left: 6px;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 0 32px rgba(0, 212, 255, 0.6), 0 6px 20px rgba(0, 0, 0, 0.4) !important;
            transform: translateY(-1px);
            color: #0a0a14 !important;
            background: linear-gradient(135deg, #29ddff, #00b8d9) !important;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: #ffffff;
            font-size: 1.6rem;
            padding: 8px;
            line-height: 1;
            cursor: pointer;
            transition: color var(--transition-fast);
        }

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

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-nav-bg);
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 4px;
                border-bottom: 2px solid rgba(0, 212, 255, 0.3);
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-normal);
                z-index: 999;
            }

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

            .nav-links a {
                width: 100%;
                text-align: center;
                padding: 13px 18px;
                font-size: 1rem;
            }

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

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

        /* ========== ARTICLE BANNER ========== */
        .article-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            padding: 40px 0 0;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(10, 10, 20, 0.55) 0%,
                    rgba(10, 10, 20, 0.78) 50%,
                    rgba(10, 10, 20, 0.92) 100%);
            z-index: 1;
        }

        .article-banner .container {
            position: relative;
            z-index: 2;
            padding-bottom: 36px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        .article-banner-title {
            font-size: 2rem;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.35;
            letter-spacing: 0.03em;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
        }

        @media (max-width: 768px) {
            .article-banner {
                min-height: 200px;
            }

            .article-banner-title {
                font-size: 1.4rem;
            }

            .breadcrumb {
                font-size: 0.78rem;
            }
        }

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

        .article-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .article-meta-bar {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            padding: 20px 32px;
            border-bottom: 1px solid var(--color-border-light);
        }

        .article-category-tag {
            display: inline-block;
            background: rgba(0, 212, 255, 0.1);
            color: #007d99;
            font-size: 0.82rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.03em;
            border: 1px solid rgba(0, 212, 255, 0.2);
        }

        .article-meta-dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--color-border);
            flex-shrink: 0;
        }

        .article-meta-text {
            font-size: 0.88rem;
            color: var(--color-text-weak);
        }

        .article-featured-image {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
            display: block;
        }

        .article-body {
            padding: 36px 32px 48px;
        }

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

        .article-content h2 {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-border-light);
            letter-spacing: 0.02em;
        }

        .article-content h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--color-text);
            margin: 28px 0 12px;
            letter-spacing: 0.02em;
        }

        .article-content p {
            margin-bottom: 18px;
            color: #3a3d4a;
        }

        .article-content ul,
        .article-content ol {
            margin: 12px 0 18px 20px;
            color: #3a3d4a;
        }

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

        .article-content blockquote {
            border-left: 4px solid var(--color-primary);
            background: rgba(0, 212, 255, 0.04);
            padding: 16px 20px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #4a505c;
            font-style: italic;
        }

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

        .article-content a {
            color: #007d99;
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

        .article-content strong {
            color: var(--color-text);
            font-weight: 700;
        }

        .article-not-found {
            text-align: center;
            padding: 60px 32px;
        }

        .article-not-found .nf-icon {
            font-size: 3.5rem;
            margin-bottom: 20px;
            display: block;
            opacity: 0.7;
        }

        .article-not-found h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--color-text-weak);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .btn-back-home {
            display: inline-block;
            background: linear-gradient(135deg, var(--color-primary), #00a8cc);
            color: #ffffff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 28px;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-normal);
            box-shadow: 0 4px 16px rgba(0, 212, 255, 0.3);
        }

        .btn-back-home:hover {
            box-shadow: 0 6px 24px rgba(0, 212, 255, 0.5);
            transform: translateY(-2px);
            color: #ffffff;
        }

        @media (max-width: 768px) {
            .article-card {
                margin-top: -24px;
                border-radius: var(--radius-md);
            }

            .article-meta-bar {
                padding: 14px 18px;
                gap: 10px;
            }

            .article-body {
                padding: 22px 18px 32px;
            }

            .article-content {
                font-size: 0.98rem;
                line-height: 1.78;
            }

            .article-content h2 {
                font-size: 1.25rem;
            }

            .article-content h3 {
                font-size: 1.08rem;
            }

            .article-featured-image {
                max-height: 260px;
            }
        }

        @media (max-width: 520px) {
            .article-body {
                padding: 16px 14px 24px;
            }

            .article-meta-bar {
                padding: 12px 14px;
            }

            .article-content {
                font-size: 0.93rem;
            }
        }

        /* ========== RELATED ARTICLES ========== */
        .related-section {
            padding: 10px 0 50px;
        }

        .related-section .section-label {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 24px;
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-label::before {
            content: '';
            width: 4px;
            height: 22px;
            background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
            border-radius: 2px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .related-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }

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

        .related-card-tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: #007d99;
            background: rgba(0, 212, 255, 0.08);
            padding: 3px 10px;
            border-radius: 14px;
            display: inline-block;
            width: fit-content;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .related-card-title {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.45;
            margin-bottom: 8px;
            flex: 1;
            transition: color var(--transition-fast);
        }

        .related-card:hover .related-card-title {
            color: #007d99;
        }

        .related-card-date {
            font-size: 0.8rem;
            color: var(--color-text-light);
        }

        @media (max-width: 768px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .related-card-img {
                height: 140px;
            }

            .related-card-body {
                padding: 14px;
            }
        }

        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-bg-dark);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: var(--color-secondary-glow);
            filter: blur(80px);
            z-index: 0;
            opacity: 0.5;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: var(--color-primary-glow);
            filter: blur(70px);
            z-index: 0;
            opacity: 0.4;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .cta-btn-large {
            display: inline-block;
            background: linear-gradient(135deg, var(--color-primary), #00a8cc);
            color: #0a0a14;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 36px;
            border-radius: 30px;
            letter-spacing: 0.04em;
            transition: all var(--transition-normal);
            box-shadow: 0 0 28px rgba(0, 212, 255, 0.45), 0 6px 20px rgba(0, 0, 0, 0.35);
        }

        .cta-btn-large:hover {
            box-shadow: 0 0 40px rgba(0, 212, 255, 0.65), 0 8px 26px rgba(0, 0, 0, 0.45);
            transform: translateY(-3px);
            color: #0a0a14;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 44px 20px;
            }

            .cta-inner h2 {
                font-size: 1.35rem;
            }

            .cta-inner p {
                font-size: 0.93rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0d0d1a;
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            padding: 6px 0;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

/* roulang page: category1 */
:root {
            /* 暗色霓虹主题设计变量 */
            --bg-primary: #0a0b0f;
            --bg-secondary: #111318;
            --bg-card: #161920;
            --bg-card-hover: #1c1f2a;
            --bg-header: rgba(10, 11, 15, 0.92);
            --text-primary: #e8e9f0;
            --text-secondary: #b0b3c0;
            --text-muted: #6b6f80;
            --accent-primary: #00e4c9;
            --accent-secondary: #7c5cfc;
            --accent-glow: rgba(0, 228, 201, 0.35);
            --accent-purple-glow: rgba(124, 92, 252, 0.3);
            --border-color: #1e2130;
            --border-light: #2a2d3a;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(0, 228, 201, 0.12);
            --shadow-purple-glow: 0 0 30px rgba(124, 92, 252, 0.1);
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.45s ease;
            --font-xs: 0.75rem;
            --font-sm: 0.85rem;
            --font-base: 1rem;
            --font-lg: 1.1rem;
            --font-xl: 1.25rem;
            --font-2xl: 1.5rem;
            --font-3xl: 1.875rem;
            --font-4xl: 2.25rem;
            --max-width: 1200px;
            --header-height: 68px;
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: var(--font-base);
            min-height: 100vh;
            padding-top: var(--header-height);
        }

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

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

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

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ==================== HEADER / NAV ==================== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-header);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
            transition: all var(--transition-normal);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
            border-bottom-color: rgba(0, 228, 201, 0.2);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: var(--font-xl);
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            position: relative;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: 0 0 20px var(--accent-glow);
            flex-shrink: 0;
        }

        .logo-text {
            background: linear-gradient(135deg, var(--accent-primary), #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: var(--font-sm);
            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(--accent-primary);
            background: rgba(0, 228, 201, 0.08);
            text-shadow: 0 0 12px var(--accent-glow);
            box-shadow: inset 0 -2px 0 var(--accent-primary);
        }

        .nav-links a.nav-cta-btn {
            background: linear-gradient(135deg, var(--accent-primary), #00c9b0);
            color: #0a0b0f;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: 8px;
            box-shadow: 0 0 20px var(--accent-glow);
            transition: all var(--transition-normal);
        }

        .nav-links a.nav-cta-btn:hover {
            box-shadow: 0 0 32px rgba(0, 228, 201, 0.5);
            transform: translateY(-1px);
            background: linear-gradient(135deg, #00f0d4, #00e4c9);
            color: #0a0b0f;
        }

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

        .mobile-menu-toggle span {
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

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

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

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

        /* ==================== CATEGORY BANNER ==================== */
        .category-banner {
            position: relative;
            background: linear-gradient(180deg, #111318 0%, #0d0f14 100%);
            border-bottom: 1px solid var(--border-color);
            padding: 56px 0 48px;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            top: -180px;
            right: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 228, 201, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(124, 92, 252, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-banner-inner {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: var(--font-xs);
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--border-light);
        }

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

        .category-banner-content {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .category-banner-text {
            flex: 1;
            min-width: 280px;
        }

        .category-banner-text .category-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: rgba(0, 228, 201, 0.1);
            color: var(--accent-primary);
            font-size: 1.4rem;
            margin-bottom: 16px;
            box-shadow: 0 0 20px var(--accent-glow);
        }

        .category-banner-text h1 {
            font-size: var(--font-4xl);
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            margin-bottom: 10px;
            line-height: 1.2;
        }

        .category-banner-text h1 span {
            background: linear-gradient(135deg, var(--accent-primary), #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .category-banner-text p {
            color: var(--text-secondary);
            font-size: var(--font-lg);
            max-width: 560px;
            line-height: 1.6;
        }

        .category-stats {
            display: flex;
            gap: 32px;
            flex-shrink: 0;
        }

        .stat-item {
            text-align: center;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 20px 28px;
            min-width: 100px;
            transition: all var(--transition-normal);
        }

        .stat-item:hover {
            border-color: rgba(0, 228, 201, 0.35);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }

        .stat-number {
            font-size: var(--font-3xl);
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-primary), #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: block;
            line-height: 1;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: var(--font-xs);
            color: var(--text-muted);
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        /* ==================== MAIN LAYOUT ==================== */
        .category-main {
            padding: 48px 0 64px;
        }

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

        /* ==================== CONTENT AREA ==================== */
        .content-area {}

        .content-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .filter-tabs {
            display: flex;
            gap: 4px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 4px;
            border: 1px solid var(--border-color);
        }

        .filter-tab {
            padding: 8px 16px;
            border-radius: 8px;
            font-size: var(--font-sm);
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }

        .filter-tab:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .filter-tab.active {
            background: rgba(0, 228, 201, 0.12);
            color: var(--accent-primary);
            font-weight: 600;
        }

        .sort-select-wrap {
            position: relative;
        }

        .sort-select {
            padding: 9px 36px 9px 14px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: var(--font-sm);
            cursor: pointer;
            appearance: none;
            -webkit-appearance: none;
            transition: all var(--transition-fast);
            min-width: 140px;
        }

        .sort-select:hover {
            border-color: var(--border-light);
        }

        .sort-select:focus {
            border-color: var(--accent-primary);
            box-shadow: 0 0 0 3px rgba(0, 228, 201, 0.08);
        }

        .sort-select-wrap::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            pointer-events: none;
            font-size: 0.8rem;
        }

        /* Articles Grid */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 36px;
        }

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

        .article-card:hover {
            border-color: rgba(0, 228, 201, 0.3);
            box-shadow: var(--shadow-glow), var(--shadow-md);
            transform: translateY(-3px);
            background: var(--bg-card-hover);
        }

        .article-card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #1a1d26;
        }

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

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

        .article-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 10px;
            border-radius: 6px;
            font-size: var(--font-xs);
            font-weight: 600;
            letter-spacing: 0.5px;
            z-index: 2;
        }

        .badge-hot {
            background: rgba(239, 68, 68, 0.9);
            color: #fff;
            box-shadow: 0 0 12px rgba(239, 68, 68, 0.4);
        }

        .badge-new {
            background: rgba(0, 228, 201, 0.85);
            color: #0a0b0f;
            box-shadow: 0 0 12px var(--accent-glow);
        }

        .badge-featured {
            background: rgba(124, 92, 252, 0.85);
            color: #fff;
            box-shadow: 0 0 12px var(--accent-purple-glow);
        }

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

        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: var(--font-xs);
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .article-card-meta .tag {
            padding: 3px 8px;
            border-radius: 4px;
            background: rgba(0, 228, 201, 0.08);
            color: var(--accent-primary);
            font-weight: 500;
            font-size: 0.7rem;
            letter-spacing: 0.5px;
        }

        .article-card-title {
            font-size: var(--font-lg);
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .article-card:hover .article-card-title {
            color: var(--accent-primary);
        }

        .article-card-excerpt {
            font-size: var(--font-sm);
            color: var(--text-muted);
            line-height: 1.5;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .article-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: var(--font-xs);
            color: var(--text-muted);
            padding-top: 10px;
            border-top: 1px solid var(--border-color);
        }

        .article-card-stats {
            display: flex;
            gap: 12px;
        }

        .article-card-stats span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .article-card-stats i {
            font-size: 0.75rem;
        }

        /* Pagination */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 10px;
            border-radius: var(--radius-sm);
            font-size: var(--font-sm);
            font-weight: 500;
            transition: all var(--transition-fast);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
        }

        .pagination a:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background: rgba(0, 228, 201, 0.06);
        }

        .pagination .current {
            background: linear-gradient(135deg, var(--accent-primary), #00b8a0);
            color: #0a0b0f;
            border-color: transparent;
            font-weight: 700;
            box-shadow: 0 0 16px var(--accent-glow);
        }

        .pagination .dots {
            border: none;
            background: transparent;
            color: var(--text-muted);
            cursor: default;
        }

        .pagination .prev,
        .pagination .next {
            gap: 4px;
        }

        /* ==================== SIDEBAR ==================== */
        .sidebar {
            position: sticky;
            top: calc(var(--header-height) + 24px);
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-widget {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 22px;
            transition: all var(--transition-normal);
        }

        .sidebar-widget:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-sm);
        }

        .widget-title {
            font-size: var(--font-lg);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-color);
            position: relative;
        }

        .widget-title::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--accent-primary);
            box-shadow: 0 0 10px var(--accent-glow);
            border-radius: 2px;
        }

        .hot-article-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .hot-article-item:last-child {
            border-bottom: none;
        }

        .hot-article-item:hover .hot-article-title {
            color: var(--accent-primary);
        }

        .hot-article-rank {
            font-size: var(--font-xl);
            font-weight: 800;
            color: var(--text-muted);
            min-width: 28px;
            text-align: center;
            line-height: 1;
            transition: color var(--transition-fast);
        }

        .hot-article-item:nth-child(1) .hot-article-rank {
            color: #ef4444;
            text-shadow: 0 0 12px rgba(239, 68, 68, 0.4);
        }

        .hot-article-item:nth-child(2) .hot-article-rank {
            color: #f59e0b;
            text-shadow: 0 0 10px rgba(245, 158, 11, 0.35);
        }

        .hot-article-item:nth-child(3) .hot-article-rank {
            color: #f97316;
            text-shadow: 0 0 8px rgba(249, 115, 22, 0.3);
        }

        .hot-article-info {
            flex: 1;
            min-width: 0;
        }

        .hot-article-title {
            font-size: var(--font-sm);
            font-weight: 500;
            color: var(--text-secondary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .hot-article-date {
            font-size: var(--font-xs);
            color: var(--text-muted);
            margin-top: 4px;
        }

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

        .tag-cloud a {
            padding: 6px 12px;
            border-radius: 20px;
            font-size: var(--font-xs);
            font-weight: 500;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .tag-cloud a:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background: rgba(0, 228, 201, 0.06);
            box-shadow: 0 0 12px var(--accent-glow);
        }

        .tag-cloud a.hot-tag {
            background: rgba(0, 228, 201, 0.08);
            border-color: rgba(0, 228, 201, 0.25);
            color: var(--accent-primary);
            font-weight: 600;
        }

        .subscribe-widget {
            background: linear-gradient(135deg, rgba(0, 228, 201, 0.06), rgba(124, 92, 252, 0.06));
            border-color: rgba(0, 228, 201, 0.2);
        }

        .subscribe-widget p {
            font-size: var(--font-sm);
            color: var(--text-secondary);
            margin-bottom: 14px;
            line-height: 1.5;
        }

        .subscribe-input-wrap {
            display: flex;
            gap: 8px;
        }

        .subscribe-input {
            flex: 1;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            font-size: var(--font-sm);
            transition: all var(--transition-fast);
        }

        .subscribe-input:focus {
            border-color: var(--accent-primary);
            box-shadow: 0 0 0 3px rgba(0, 228, 201, 0.08);
        }

        .subscribe-input::placeholder {
            color: var(--text-muted);
        }

        .btn-subscribe {
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-primary), #00c9b0);
            color: #0a0b0f;
            font-weight: 600;
            font-size: var(--font-sm);
            box-shadow: 0 0 16px var(--accent-glow);
            transition: all var(--transition-normal);
            white-space: nowrap;
        }

        .btn-subscribe:hover {
            box-shadow: 0 0 24px rgba(0, 228, 201, 0.5);
            transform: translateY(-1px);
        }

        /* ==================== CTA SECTION ==================== */
        .cta-section {
            background: linear-gradient(180deg, #111318 0%, #0d0f14 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(0, 228, 201, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: var(--font-3xl);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .cta-inner h2 span {
            background: linear-gradient(135deg, var(--accent-primary), #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .cta-inner p {
            color: var(--text-secondary);
            font-size: var(--font-lg);
            margin-bottom: 28px;
            line-height: 1.6;
        }

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

        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: var(--font-base);
            background: linear-gradient(135deg, var(--accent-primary), #00c9b0);
            color: #0a0b0f;
            box-shadow: 0 0 28px var(--accent-glow);
            transition: all var(--transition-normal);
        }

        .btn-primary-glow:hover {
            box-shadow: 0 0 44px rgba(0, 228, 201, 0.55);
            transform: translateY(-2px);
        }

        .btn-outline-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: var(--font-base);
            border: 1.5px solid rgba(0, 228, 201, 0.4);
            color: var(--accent-primary);
            transition: all var(--transition-normal);
        }

        .btn-outline-glow:hover {
            border-color: var(--accent-primary);
            box-shadow: 0 0 24px var(--accent-glow);
            background: rgba(0, 228, 201, 0.06);
            transform: translateY(-2px);
        }

        /* ==================== FAQ SECTION ==================== */
        .faq-section {
            padding: 60px 0 48px;
        }

        .faq-section .section-title {
            text-align: center;
            font-size: var(--font-3xl);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .faq-section .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: var(--font-base);
            margin-bottom: 36px;
        }

        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: var(--font-base);
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: all var(--transition-fast);
            user-select: none;
        }

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

        .faq-question i {
            transition: transform var(--transition-fast);
            color: var(--text-muted);
            font-size: 0.85rem;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            color: var(--text-secondary);
            font-size: var(--font-sm);
            line-height: 1.7;
        }

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

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

        .footer-logo {
            font-size: var(--font-xl);
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-primary), #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 10px;
            display: inline-block;
        }

        .footer-brand p {
            font-size: var(--font-sm);
            color: var(--text-muted);
            line-height: 1.6;
        }

        .footer-col h4 {
            font-size: var(--font-sm);
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

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

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

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

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

            .sidebar {
                position: static;
                top: auto;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .sidebar-widget {
                padding: 18px;
            }

            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

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

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

            .header-inner {
                padding: 0 16px;
            }

            .logo {
                font-size: var(--font-lg);
            }

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }

            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--bg-secondary);
                flex-direction: column;
                padding: 80px 20px 30px;
                gap: 4px;
                transition: right var(--transition-normal);
                z-index: 1000;
                border-left: 1px solid var(--border-color);
                box-shadow: -4px 0 30px rgba(0, 0, 0, 0.6);
            }

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

            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                font-size: var(--font-base);
                border-radius: 10px;
            }

            .nav-links a.nav-cta-btn {
                text-align: center;
                justify-content: center;
                margin-top: 8px;
            }

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

            .category-banner {
                padding: 36px 0 32px;
            }

            .category-banner-text h1 {
                font-size: var(--font-2xl);
            }

            .category-banner-text p {
                font-size: var(--font-base);
            }

            .category-stats {
                gap: 12px;
            }

            .stat-item {
                padding: 14px 18px;
                min-width: 80px;
            }

            .stat-number {
                font-size: var(--font-2xl);
            }

            .articles-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .content-toolbar {
                flex-direction: column;
                align-items: stretch;
            }

            .filter-tabs {
                overflow-x: auto;
                white-space: nowrap;
                -webkit-overflow-scrolling: touch;
            }

            .filter-tab {
                flex-shrink: 0;
            }

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

            .cta-inner h2 {
                font-size: var(--font-2xl);
            }

            .cta-inner p {
                font-size: var(--font-base);
            }

            .faq-section .section-title {
                font-size: var(--font-2xl);
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .pagination a,
            .pagination span {
                min-width: 34px;
                height: 34px;
                font-size: var(--font-xs);
            }
        }

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

            .category-banner-content {
                flex-direction: column;
            }

            .category-stats {
                width: 100%;
                justify-content: space-between;
            }

            .stat-item {
                flex: 1;
                padding: 12px 10px;
                min-width: auto;
            }

            .stat-number {
                font-size: var(--font-xl);
            }

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

            .article-card-title {
                font-size: var(--font-base);
            }

            .pagination {
                gap: 3px;
            }

            .pagination a,
            .pagination span {
                min-width: 30px;
                height: 30px;
                padding: 0 7px;
                font-size: 0.7rem;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }

            .btn-primary-glow,
            .btn-outline-glow {
                width: 100%;
                justify-content: center;
                padding: 12px 24px;
                font-size: var(--font-sm);
            }
        }

        /* Focus accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 6px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-primary);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 3px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* Overlay for mobile menu */
        .menu-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
            transition: opacity var(--transition-normal);
        }

        .menu-overlay.show {
            display: block;
        }