/* roulang page: index */
:root {
            --color-primary: #3b2d6e;
            --color-primary-light: #5a4a8f;
            --color-primary-dark: #1f1545;
            --color-accent: #c9a96e;
            --color-accent-soft: #e8d5b0;
            --color-accent-glow: #f0d78c;
            --color-bg-deep: #0d0b1a;
            --color-bg-dark: #13102b;
            --color-bg-mid: #1a1640;
            --color-bg-soft: #1f1b4a;
            --color-bg-card: #1e1950;
            --color-bg-light: #252058;
            --color-text-primary: #e8e4f2;
            --color-text-secondary: #b8b2d0;
            --color-text-muted: #8a84a8;
            --color-text-on-dark: #f0ecfa;
            --color-border: #2e2870;
            --color-border-light: #3d3690;
            --color-white: #ffffff;
            --color-success: #6ec9a0;
            --color-warning: #e8c56d;
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --radius-full: 9999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(201, 169, 110, 0.18);
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(201, 169, 110, 0.06);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-serif: 'Noto Serif SC', 'STSong', 'SimSun', 'Georgia', serif;
            --container-max: 1200px;
            --container-narrow: 860px;
            --header-height: 68px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 28px;
            --spacing-lg: 48px;
            --spacing-xl: 72px;
            --spacing-2xl: 100px;
        }

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

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

        body {
            font-family: var(--font-sans);
            line-height: 1.68;
            color: var(--color-text-primary);
            background-color: var(--color-bg-deep);
            background-image:
                radial-gradient(ellipse at 20% 5%, rgba(90, 74, 143, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 30%, rgba(201, 169, 110, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 80%, rgba(59, 45, 110, 0.18) 0%, transparent 50%);
            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 {
            font-family: inherit;
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition-base);
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-xs);
        }

        ul,
        ol {
            list-style: none;
        }

        input {
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition-base);
        }

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

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

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(13, 11, 26, 0.88);
            backdrop-filter: blur(18px) saturate(140%);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid rgba(46, 40, 112, 0.5);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: all var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            border-bottom-color: rgba(46, 40, 112, 0.7);
        }

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

        .header-logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }

        .header-logo:hover {
            opacity: 0.85;
        }

        .header-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--color-accent-glow);
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(201, 169, 110, 0.2);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--color-bg-mid);
            border-radius: var(--radius-full);
            padding: 5px;
            border: 1px solid var(--color-border);
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            border-radius: var(--radius-full);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.02em;
        }

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

        .nav-chip.active {
            background: var(--color-primary-light);
            color: var(--color-white);
            font-weight: 600;
            box-shadow: var(--shadow-sm), 0 0 12px rgba(90, 74, 143, 0.35);
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--radius-full);
            font-size: 0.94rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            white-space: nowrap;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--color-accent);
            color: var(--color-bg-deep);
            box-shadow: var(--shadow-sm), 0 0 18px rgba(201, 169, 110, 0.25);
        }

        .btn-primary:hover {
            background: var(--color-accent-glow);
            box-shadow: var(--shadow-md), 0 0 28px rgba(201, 169, 110, 0.4);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: var(--shadow-sm);
        }

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

        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(201, 169, 110, 0.06);
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-full);
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--color-bg-mid);
            border: 1px solid var(--color-border);
            align-items: center;
            justify-content: center;
            cursor: pointer;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            border-color: var(--color-accent);
            background: var(--color-bg-soft);
        }

        .mobile-menu-toggle .hamburger-line {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-text-secondary);
            border-radius: 2px;
            transition: all var(--transition-base);
            position: relative;
        }

        .mobile-menu-toggle .hamburger-line::before,
        .mobile-menu-toggle .hamburger-line::after {
            content: '';
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-text-secondary);
            border-radius: 2px;
            position: absolute;
            transition: all var(--transition-base);
        }

        .mobile-menu-toggle .hamburger-line::before {
            top: -6px;
        }
        .mobile-menu-toggle .hamburger-line::after {
            top: 6px;
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            overflow: hidden;
            min-height: 580px;
            display: flex;
            align-items: center;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            filter: brightness(0.45) saturate(1.1);
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(13, 11, 26, 0.55) 0%,
                    rgba(13, 11, 26, 0.35) 40%,
                    rgba(13, 11, 26, 0.7) 80%,
                    var(--color-bg-deep) 100%);
        }

        .hero-wave {
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            z-index: 1;
            pointer-events: none;
        }

        .hero-wave svg {
            display: block;
            width: 100%;
            height: auto;
        }

        .hero-wave .wave-fill {
            fill: var(--color-bg-deep);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 18px;
            border-radius: var(--radius-full);
            background: rgba(201, 169, 110, 0.13);
            border: 1px solid rgba(201, 169, 110, 0.3);
            color: var(--color-accent-glow);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: var(--spacing-md);
        }

        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.4rem);
            font-weight: 800;
            color: var(--color-white);
            line-height: 1.25;
            letter-spacing: 0.03em;
            margin-bottom: var(--spacing-sm);
            text-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
        }

        .hero-title .highlight {
            color: var(--color-accent-glow);
            position: relative;
            display: inline-block;
        }

        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--color-text-secondary);
            max-width: 520px;
            margin: 0 auto var(--spacing-lg);
            line-height: 1.7;
            text-shadow: 0 1px 8px rgba(0, 0, 0, 0.4);
        }

        .hero-actions {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--spacing-xl) 0;
            position: relative;
        }

        .section--alt {
            background: var(--color-bg-dark);
            position: relative;
        }

        .section--alt::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-border), transparent);
        }

        .section--alt::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-border), transparent);
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-lg);
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: var(--spacing-xs);
        }

        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
            font-weight: 700;
            color: var(--color-text-on-dark);
            letter-spacing: 0.02em;
            margin-bottom: var(--spacing-xs);
        }

        .section-desc {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 550px;
            margin: 0 auto;
        }

        /* ========== FEATURE CARDS ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

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

        .feature-card::before {
            content: '';
            position: absolute;
            top: -30%;
            left: 50%;
            transform: translateX(-50%);
            width: 120px;
            height: 120px;
            background: radial-gradient(circle, rgba(201, 169, 110, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            transition: all var(--transition-slow);
        }

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

        .feature-card:hover::before {
            width: 160px;
            height: 160px;
            top: -40%;
            background: radial-gradient(circle, rgba(201, 169, 110, 0.14) 0%, transparent 70%);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-sm);
            font-size: 1.5rem;
            color: var(--color-accent-glow);
            position: relative;
            z-index: 1;
            box-shadow: 0 0 20px rgba(90, 74, 143, 0.3);
        }

        .feature-card h3 {
            font-size: 1.12rem;
            font-weight: 650;
            color: var(--color-text-on-dark);
            margin-bottom: var(--spacing-xs);
            position: relative;
            z-index: 1;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            position: relative;
            z-index: 1;
        }

        /* ========== CATEGORY CHIPS SECTION ========== */
        .category-chips {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .category-chip-card {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 22px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-full);
            transition: all var(--transition-base);
            cursor: pointer;
            color: var(--color-text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
        }

        .category-chip-card:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(201, 169, 110, 0.06);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .category-chip-card .chip-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
        }

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

        .news-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            padding: 18px 22px;
            background: var(--color-bg-card);
            border: 1px solid transparent;
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .news-item:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-card);
            transform: translateX(4px);
            background: var(--color-bg-soft);
        }

        .news-item-thumb {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-mid);
        }

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

        .news-item-body h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-on-dark);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-item-body .news-meta {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .news-item-body .news-excerpt {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin-top: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-item-arrow {
            flex-shrink: 0;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
            font-size: 1.1rem;
        }

        .news-item:hover .news-item-arrow {
            color: var(--color-accent);
            transform: translateX(3px);
        }

        .news-empty {
            text-align: center;
            padding: var(--spacing-lg);
            color: var(--color-text-muted);
            font-size: 0.95rem;
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
            max-width: 600px;
            margin: 0 auto;
        }

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

        .stat-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            transition: all var(--transition-base);
        }

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

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-accent-glow);
            letter-spacing: 0.02em;
            line-height: 1;
            margin-bottom: 6px;
        }

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

        /* ========== CONTENT CARDS ========== */
        .content-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

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

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

        .content-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--color-bg-mid);
        }

        .content-card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .content-card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--color-accent);
            background: rgba(201, 169, 110, 0.1);
            padding: 4px 12px;
            border-radius: var(--radius-full);
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .content-card h4 {
            font-size: 1.05rem;
            font-weight: 650;
            color: var(--color-text-on-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .content-card p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            flex: 1;
        }

        .content-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            transition: all var(--transition-fast);
        }

        .content-card-link:hover {
            gap: 10px;
            color: var(--color-accent-glow);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

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

        .faq-question {
            padding: 20px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text-on-dark);
            transition: all var(--transition-fast);
            user-select: none;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            transition: all var(--transition-base);
        }

        .faq-item.open .faq-icon {
            background: var(--color-accent);
            color: var(--color-bg-deep);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 24px;
            color: var(--color-text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
        }

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

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            overflow: hidden;
            background: var(--color-bg-dark);
            border-radius: var(--radius-xl);
            margin: var(--spacing-lg) auto;
            max-width: var(--container-max);
            padding: var(--spacing-xl) var(--spacing-lg);
            text-align: center;
            border: 1px solid var(--color-border);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            background-color: rgba(19, 16, 43, 0.9);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 11, 26, 0.8) 0%, rgba(19, 16, 43, 0.5) 100%);
            z-index: 0;
            border-radius: var(--radius-xl);
        }

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

        .cta-section .section-title {
            margin-bottom: var(--spacing-sm);
        }

        .cta-section .section-desc {
            margin-bottom: var(--spacing-md);
        }

        .cta-actions {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-bg-dark);
            border-top: 1px solid var(--color-border);
            padding: var(--spacing-lg) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .footer-inner {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }

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

        .footer-brand .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: var(--spacing-xs);
            letter-spacing: 0.03em;
        }

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

        .footer-links {
            display: flex;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 650;
            color: var(--color-text-on-dark);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

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

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

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .content-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .header-nav {
                gap: 2px;
                padding: 4px;
            }
            .nav-chip {
                padding: 8px 15px;
                font-size: 0.85rem;
            }
            .hero {
                min-height: 480px;
                padding: var(--spacing-xl) 0 var(--spacing-lg);
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
                --spacing-xl: 48px;
                --spacing-lg: 32px;
                --spacing-md: 20px;
            }
            .header-nav {
                display: none;
            }
            .header-nav.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--header-height);
                left: 16px;
                right: 16px;
                background: var(--color-bg-mid);
                border: 1px solid var(--color-border);
                border-radius: var(--radius-lg);
                padding: 8px;
                gap: 2px;
                z-index: 999;
                box-shadow: var(--shadow-lg);
            }
            .header-nav.mobile-open .nav-chip {
                border-radius: var(--radius-md);
                padding: 12px 18px;
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .header-cta {
                display: none;
            }
            .header-cta.mobile-open {
                display: flex;
                position: absolute;
                top: calc(var(--header-height) + 180px);
                left: 16px;
                right: 16px;
                z-index: 999;
            }
            .header-cta.mobile-open .btn {
                width: 100%;
                justify-content: center;
            }
            .features-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }
            .content-cards-grid {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero {
                min-height: 400px;
                padding: var(--spacing-lg) 0;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .cta-section {
                border-radius: var(--radius-lg);
                margin-left: 16px;
                margin-right: 16px;
                padding: var(--spacing-lg) var(--spacing-md);
            }
            .footer-inner {
                flex-direction: column;
                gap: var(--spacing-md);
            }
            .footer-links {
                gap: var(--spacing-md);
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding: 16px;
            }
            .news-item-thumb {
                width: 100%;
                height: 140px;
                border-radius: var(--radius-sm);
            }
            .section {
                padding: var(--spacing-lg) 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-title {
                font-size: 1.55rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .stat-label {
                font-size: 0.78rem;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .content-card-img {
                height: 160px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
                max-width: 280px;
            }
            .category-chips {
                gap: 8px;
            }
            .category-chip-card {
                padding: 10px 16px;
                font-size: 0.85rem;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #3b4a7c;
            --color-primary-dark: #2a3660;
            --color-primary-light: #5a6b9e;
            --color-accent: #c4a265;
            --color-accent-light: #e8d5b8;
            --color-accent-soft: #f5efe3;
            --color-bg: #faf8f5;
            --color-bg-alt: #f2f0eb;
            --color-bg-warm: #f7f4ee;
            --color-bg-dark: #1e2440;
            --color-bg-dark-soft: #2a3050;
            --color-white: #ffffff;
            --color-text: #2d2d2d;
            --color-text-strong: #1a1a1a;
            --color-text-weak: #6b6b6b;
            --color-text-light: #999;
            --color-border: #e8e5df;
            --color-border-light: #f0ede7;
            --color-tag-bg: #e8ecf4;
            --color-tag-text: #4a5580;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow: 0 4px 20px rgba(0,0,0,0.07);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.10);
            --shadow-card: 0 2px 12px rgba(0,0,0,0.05);
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --font-reading: 'Georgia', 'Noto Serif SC', 'STSong', 'Songti SC', 'PingFang SC', serif;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.4s ease;
            --content-width: 720px;
            --container-padding: 24px;
            --section-gap: 64px;
            --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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
        }
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--container-padding);
        }
        .container--narrow {
            max-width: var(--content-width);
        }
        .container--reading {
            max-width: 780px;
        }

        /* ===== HEADER ===== */
        .site-header {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-xs);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.95);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }
        .header-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header-logo a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .header-logo a:hover {
            color: var(--color-primary);
        }
        .header-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.8rem;
            flex-shrink: 0;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            background: transparent;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            border: 1px solid transparent;
            letter-spacing: 0.01em;
        }
        .nav-chip:hover {
            color: var(--color-primary);
            background: var(--color-tag-bg);
            border-color: var(--color-border);
        }
        .nav-chip.active {
            color: var(--color-white);
            background: var(--color-primary);
            border-color: var(--color-primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(59,74,124,0.25);
        }
        .nav-chip.active:hover {
            color: var(--color-white);
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
        }
        .header-cta {
            flex-shrink: 0;
        }
        .btn-subscribe-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 0.88rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn-subscribe-sm:hover {
            background: #b38f52;
            box-shadow: 0 4px 16px rgba(196,162,101,0.35);
            transform: translateY(-1px);
        }
        .btn-subscribe-sm:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(196,162,101,0.3);
        }

        /* Mobile menu toggle */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            gap: 6px;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .mobile-menu-toggle span {
            display: block;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* ===== MAIN ===== */
        .site-main {
            flex: 1;
        }

        /* Article Banner */
        .article-banner {
            position: relative;
            background: var(--color-bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(30,36,64,0.3) 0%,
                    rgba(30,36,64,0.65) 50%,
                    rgba(30,36,64,0.85) 100%);
            z-index: 1;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--color-bg);
            clip-path: ellipse(55% 100% at 50% 100%);
            z-index: 2;
        }
        .article-banner-content {
            position: relative;
            z-index: 3;
            width: 100%;
            padding: 40px 0 50px;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: rgba(255,255,255,0.85);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .article-breadcrumb a:hover {
            color: #fff;
        }
        .article-breadcrumb .sep {
            opacity: 0.5;
        }
        .article-category-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(255,255,255,0.18);
            color: #fff;
            margin-bottom: 12px;
            backdrop-filter: blur(4px);
            letter-spacing: 0.02em;
        }
        .article-banner-title {
            font-size: 1.9rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.35;
            max-width: 800px;
            letter-spacing: 0.01em;
        }

        /* Article Meta */
        .article-meta-bar {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            padding: 16px 0;
            position: sticky;
            top: var(--nav-height);
            z-index: 50;
            box-shadow: var(--shadow-xs);
        }
        .article-meta-inner {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.88rem;
            color: var(--color-text-weak);
        }
        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta-icon {
            width: 16px;
            height: 16px;
            opacity: 0.6;
            flex-shrink: 0;
        }
        .article-meta-divider {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--color-border);
            flex-shrink: 0;
        }

        /* Reading progress */
        .reading-progress {
            position: fixed;
            top: var(--nav-height);
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--color-border-light);
            z-index: 99;
        }
        .reading-progress-bar {
            height: 100%;
            background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
            width: 0%;
            transition: width 0.1s linear;
            border-radius: 0 2px 2px 0;
        }

        /* Article Body */
        .article-section {
            padding: 48px 0 56px;
        }
        .article-featured-image {
            margin-bottom: 36px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .article-featured-image img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-lg);
        }
        .article-body {
            font-family: var(--font-reading);
            font-size: 1.08rem;
            line-height: 1.9;
            color: var(--color-text);
            letter-spacing: 0.005em;
        }
        .article-body p {
            margin-bottom: 1.5em;
        }
        .article-body h2 {
            font-family: var(--font-sans);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin: 2em 0 0.8em;
            padding-top: 0.4em;
            line-height: 1.35;
        }
        .article-body h3 {
            font-family: var(--font-sans);
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin: 1.6em 0 0.6em;
            line-height: 1.4;
        }
        .article-body blockquote {
            margin: 1.8em 0;
            padding: 20px 28px;
            background: var(--color-bg-warm);
            border-left: 4px solid var(--color-accent);
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
            color: var(--color-text-weak);
            font-size: 1.02rem;
        }
        .article-body ul,
        .article-body ol {
            margin: 1.2em 0;
            padding-left: 1.6em;
        }
        .article-body li {
            margin-bottom: 0.5em;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 1.8em auto;
            box-shadow: var(--shadow-sm);
        }
        .article-body a {
            color: var(--color-primary);
            text-decoration: underline;
            text-decoration-thickness: 1px;
            text-underline-offset: 3px;
            transition: all var(--transition-fast);
        }
        .article-body a:hover {
            color: var(--color-primary-dark);
            text-decoration-thickness: 2px;
        }
        .article-body hr {
            border: none;
            border-top: 1px solid var(--color-border);
            margin: 2em 0;
        }
        .article-body code {
            background: var(--color-bg-alt);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
            color: var(--color-primary-dark);
        }
        .article-body pre {
            background: var(--color-bg-dark-soft);
            color: #e0e0e0;
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 1.5em 0;
            font-size: 0.9rem;
        }
        .article-body pre code {
            background: none;
            padding: 0;
            color: inherit;
            font-size: inherit;
        }

        /* Article footer tags */
        .article-tags-footer {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .article-tags-label {
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--color-text-weak);
            flex-shrink: 0;
        }
        .article-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .article-tag:hover {
            background: #dce3f0;
            color: var(--color-primary-dark);
        }

        /* Wave divider */
        .wave-divider {
            position: relative;
            height: 70px;
            overflow: hidden;
            background: var(--color-bg);
        }
        .wave-divider svg {
            position: absolute;
            bottom: 0;
            width: 100%;
            height: 70px;
        }
        .wave-divider--flip svg {
            transform: rotate(180deg);
            bottom: auto;
            top: 0;
        }

        /* Related articles */
        .related-section {
            padding: 56px 0 64px;
            background: var(--color-bg-alt);
        }
        .related-section .section-label {
            font-size: 0.82rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 36px;
            letter-spacing: 0.01em;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .related-card-image {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .related-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .related-card:hover .related-card-image img {
            transform: scale(1.04);
        }
        .related-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card-category {
            font-size: 0.75rem;
            color: var(--color-accent);
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 6px;
        }
        .related-card-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-strong);
            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);
        }
        .related-card:hover .related-card-title {
            color: var(--color-primary);
        }
        .related-card-date {
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin-top: auto;
        }

        /* Subscribe CTA */
        .subscribe-cta {
            padding: 56px 0;
            background: var(--color-bg-warm);
            position: relative;
            overflow: hidden;
        }
        .subscribe-cta::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(196,162,101,0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .subscribe-cta-inner {
            text-align: center;
            position: relative;
            z-index: 1;
            max-width: 560px;
            margin: 0 auto;
        }
        .subscribe-cta .cta-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-accent-soft);
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
        }
        .subscribe-cta h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }
        .subscribe-cta p {
            color: var(--color-text-weak);
            margin-bottom: 24px;
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 440px;
            margin: 0 auto;
        }
        .subscribe-form input {
            flex: 1;
            padding: 12px 18px;
            border-radius: 28px;
            border: 1.5px solid var(--color-border);
            font-size: 0.9rem;
            background: var(--color-white);
            transition: all var(--transition-fast);
            min-width: 0;
        }
        .subscribe-form input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(196,162,101,0.1);
        }
        .subscribe-form button {
            padding: 12px 24px;
            border-radius: 28px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .subscribe-form button:hover {
            background: #b38f52;
            box-shadow: 0 4px 16px rgba(196,162,101,0.35);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255,255,255,0.75);
            padding: 48px 0 24px;
        }
        .footer-inner {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }
        .footer-brand {
            flex: 1;
            min-width: 260px;
            max-width: 360px;
        }
        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.55);
        }
        .footer-links {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }
        .footer-col h5 {
            font-size: 0.85rem;
            font-weight: 600;
            color: rgba(255,255,255,0.9);
            margin-bottom: 14px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.55);
            text-decoration: none;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }

        /* Not found state */
        .not-found-state {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-state .nf-icon {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            margin: 0 auto 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--color-text-light);
        }
        .not-found-state h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 10px;
        }
        .not-found-state p {
            color: var(--color-text-weak);
            margin-bottom: 24px;
            font-size: 0.95rem;
        }
        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: 28px;
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            text-decoration: none;
            transition: all var(--transition);
        }
        .btn-back-home:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 4px 16px rgba(59,74,124,0.3);
            color: #fff;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .article-banner-title {
                font-size: 1.6rem;
            }
            .article-body {
                font-size: 1.03rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 56px;
                --container-padding: 18px;
                --section-gap: 40px;
            }
            .header-inner {
                flex-wrap: wrap;
                gap: 10px;
                height: auto;
                padding: 10px 0;
            }
            .header-logo {
                font-size: 1.05rem;
            }
            .header-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                flex-wrap: nowrap;
                gap: 4px;
                padding-bottom: 4px;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .header-nav::-webkit-scrollbar {
                display: none;
            }
            .nav-chip {
                padding: 7px 14px;
                font-size: 0.82rem;
                border-radius: 20px;
                flex-shrink: 0;
            }
            .header-cta {
                margin-left: auto;
            }
            .btn-subscribe-sm {
                padding: 7px 16px;
                font-size: 0.8rem;
            }
            .article-banner {
                min-height: 200px;
            }
            .article-banner-title {
                font-size: 1.35rem;
            }
            .article-meta-bar {
                top: auto;
                position: relative;
                padding: 12px 0;
            }
            .reading-progress {
                top: 0;
                height: 2px;
            }
            .article-section {
                padding: 28px 0 40px;
            }
            .article-body {
                font-size: 1rem;
                line-height: 1.8;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .article-body blockquote {
                padding: 16px 20px;
                font-size: 0.95rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .related-section .section-title {
                font-size: 1.3rem;
            }
            .subscribe-form {
                flex-direction: column;
                gap: 10px;
                max-width: 100%;
            }
            .subscribe-form input,
            .subscribe-form button {
                width: 100%;
                text-align: center;
            }
            .footer-inner {
                flex-direction: column;
                gap: 32px;
            }
            .footer-brand {
                max-width: 100%;
            }
            .footer-links {
                gap: 28px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --container-padding: 14px;
            }
            .article-banner {
                min-height: 170px;
            }
            .article-banner-title {
                font-size: 1.2rem;
            }
            .article-banner-content {
                padding: 28px 0 36px;
            }
            .article-body {
                font-size: 0.96rem;
            }
            .article-body h2 {
                font-size: 1.2rem;
            }
            .article-meta-inner {
                gap: 12px;
                font-size: 0.8rem;
            }
            .related-card-body {
                padding: 14px 16px 16px;
            }
            .related-card-title {
                font-size: 0.9rem;
            }
            .footer-col h5 {
                font-size: 0.78rem;
            }
            .footer-col ul li a {
                font-size: 0.82rem;
            }
        }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #1b2a4a;
            --primary-light: #2c4270;
            --primary-soft: #e8ecf3;
            --accent: #c49b4c;
            --accent-light: #d9b86b;
            --accent-soft: #f5eedb;
            --accent-glow: #e8d5b0;
            --bg: #f9f7f3;
            --bg-warm: #fdfaf4;
            --bg-dark: #111827;
            --bg-dark-soft: #1a2332;
            --text: #1f1f1f;
            --text-secondary: #5c5c5c;
            --text-muted: #8a8a8a;
            --text-on-dark: #e4dfd8;
            --text-on-dark-muted: #b0a99e;
            --border: #e2ddd4;
            --border-light: #ede9e1;
            --card-bg: #ffffff;
            --card-bg-warm: #fefdf9;
            --radius-lg: 16px;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-xs: 6px;
            --shadow-sm: 0 1px 4px rgba(0,0,0,0.04);
            --shadow: 0 2px 16px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-hover: 0 10px 36px rgba(0,0,0,0.11);
            --shadow-dark: 0 4px 20px rgba(0,0,0,0.25);
            --font-sans: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-serif: 'Noto Serif SC', 'STSong', 'SimSun', 'Georgia', serif;
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --max-width: 1200px;
            --max-width-narrow: 860px;
            --header-height: 68px;
        }

        /* ============ Reset & Base ============ */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input {
            font-family: inherit;
            font-size: inherit;
        }
        ul, ol {
            list-style: none;
        }
        h1, h2, h3, h4, h5, h6 {
            line-height: 1.35;
            font-weight: 700;
            color: var(--text);
        }

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

        /* ============ Header & Nav ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 8px rgba(0,0,0,0.04);
            transition: all var(--transition);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 24px;
        }
        .header-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.02em;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .header-logo:hover {
            color: var(--accent);
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
        }
        .header-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1.5px solid transparent;
            white-space: nowrap;
            cursor: pointer;
            transition: all var(--transition-fast);
            user-select: none;
        }
        .nav-chip:hover {
            color: var(--primary);
            background: var(--primary-soft);
            border-color: transparent;
        }
        .nav-chip.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(27,42,74,0.25);
        }
        .header-cta {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 0.88rem;
            font-weight: 600;
            color: #fff;
            background: var(--accent);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            box-shadow: 0 2px 10px rgba(196,155,76,0.3);
        }
        .header-cta:hover {
            background: var(--accent-light);
            box-shadow: 0 4px 18px rgba(196,155,76,0.4);
            transform: translateY(-1px);
        }
        .header-cta:active {
            transform: translateY(0);
            box-shadow: 0 1px 6px rgba(196,155,76,0.25);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            border: none;
            background: transparent;
            cursor: pointer;
            flex-shrink: 0;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .mobile-menu-btn:hover {
            background: var(--primary-soft);
        }
        .mobile-menu-btn span {
            display: block;
            width: 100%;
            height: 2.5px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .mobile-menu-btn span + span {
            margin-top: 6px;
        }

        /* ============ Category Banner ============ */
        .cat-banner {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 35%;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .cat-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                rgba(17,24,39,0.72) 0%,
                rgba(17,24,39,0.55) 40%,
                rgba(17,24,39,0.78) 100%);
            z-index: 1;
        }
        .cat-banner::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg) 0%, transparent 100%);
            z-index: 2;
        }
        .cat-banner-content {
            position: relative;
            z-index: 3;
            padding: 60px 0 80px;
            color: var(--text-on-dark);
        }
        .cat-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-on-dark-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .cat-breadcrumb a {
            color: var(--accent-glow);
            transition: color var(--transition-fast);
        }
        .cat-breadcrumb a:hover {
            color: #fff;
        }
        .cat-breadcrumb .sep {
            opacity: 0.5;
        }
        .cat-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            line-height: 1.25;
        }
        .cat-banner-desc {
            font-size: 1.1rem;
            color: var(--text-on-dark-muted);
            max-width: 600px;
            line-height: 1.7;
        }
        .cat-stats-row {
            display: flex;
            gap: 32px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .cat-stat {
            display: flex;
            flex-direction: column;
        }
        .cat-stat-num {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .cat-stat-label {
            font-size: 0.82rem;
            color: var(--text-on-dark-muted);
        }

        /* ============ 子分类筛选标签 ============ */
        .subcat-section {
            padding: 32px 0 8px;
            position: relative;
            z-index: 5;
            margin-top: -40px;
        }
        .subcat-inner {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            border: 1px solid var(--border-light);
        }
        .subcat-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
            margin-right: 4px;
            flex-shrink: 0;
        }
        .subcat-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 0.84rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1.5px solid transparent;
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition-fast);
            user-select: none;
        }
        .subcat-chip:hover {
            color: var(--primary);
            background: var(--primary-soft);
            border-color: transparent;
        }
        .subcat-chip.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(27,42,74,0.2);
        }

        /* ============ 文章网格 ============ */
        .articles-section {
            padding: 44px 0 56px;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 28px;
            gap: 16px;
            flex-wrap: wrap;
        }
        .section-header h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.01em;
        }
        .section-header .count-badge {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 400;
        }
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .article-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .article-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--border);
        }
        .article-card-image {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-dark-soft);
        }
        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-card:hover .article-card-image img {
            transform: scale(1.04);
        }
        .article-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.76rem;
            font-weight: 600;
            color: #fff;
            background: rgba(27,42,74,0.82);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            z-index: 2;
        }
        .article-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .article-card-body h3 {
            font-size: 1.08rem;
            font-weight: 650;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card-body .excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .article-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* ============ 精选推荐 ============ */
        .featured-section {
            padding: 0 0 56px;
        }
        .featured-section .section-header h2 {
            position: relative;
        }
        .featured-section .section-header h2::after {
            content: '';
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            margin-left: 8px;
            vertical-align: middle;
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.4); }
        }
        .featured-card {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 0;
            background: var(--card-bg-warm);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .featured-card-image {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--bg-dark-soft);
        }
        .featured-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .featured-card:hover .featured-card-image img {
            transform: scale(1.03);
        }
        .featured-card-body {
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-card-body .featured-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 14px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-soft);
            margin-bottom: 12px;
            width: fit-content;
        }
        .featured-card-body h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
            line-height: 1.4;
        }
        .featured-card-body .excerpt {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .featured-card-body .btn-outline {
            align-self: flex-start;
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: 48px 0 56px;
            background: var(--bg-warm);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .faq-section .section-header {
            text-align: center;
            display: block;
            margin-bottom: 36px;
        }
        .faq-section .section-header h2 {
            font-size: 1.55rem;
            margin-bottom: 8px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: var(--max-width-narrow);
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 24px;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            line-height: 1.5;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--primary);
            transition: all var(--transition);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        /* ============ CTA ============ */
        .cta-section {
            padding: 56px 0 60px;
            text-align: center;
        }
        .cta-card {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border-radius: var(--radius-lg);
            padding: 52px 40px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-dark);
        }
        .cta-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg,
                rgba(27,42,74,0.88) 0%,
                rgba(17,24,39,0.78) 100%);
            z-index: 1;
        }
        .cta-card-content {
            position: relative;
            z-index: 2;
            color: #fff;
            max-width: 560px;
            margin: 0 auto;
        }
        .cta-card-content h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .cta-card-content p {
            font-size: 1rem;
            color: var(--text-on-dark-muted);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 440px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form input {
            flex: 1 1 240px;
            padding: 12px 18px;
            border-radius: 28px;
            border: 1.5px solid rgba(255,255,255,0.25);
            background: rgba(255,255,255,0.1);
            color: #fff;
            font-size: 0.92rem;
            outline: none;
            transition: all var(--transition-fast);
            backdrop-filter: blur(4px);
        }
        .cta-form input::placeholder {
            color: rgba(255,255,255,0.5);
        }
        .cta-form input:focus {
            border-color: var(--accent-glow);
            background: rgba(255,255,255,0.16);
            box-shadow: 0 0 0 4px rgba(196,155,76,0.12);
        }
        .cta-form .btn-primary {
            flex-shrink: 0;
            padding: 12px 28px;
            border-radius: 28px;
            font-size: 0.92rem;
            font-weight: 600;
            color: #fff;
            background: var(--accent);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(196,155,76,0.35);
        }
        .cta-form .btn-primary:hover {
            background: var(--accent-light);
            box-shadow: 0 6px 22px rgba(196,155,76,0.45);
            transform: translateY(-1px);
        }

        /* ============ 按钮系统 ============ */
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 22px;
            border-radius: 24px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--primary);
            background: transparent;
            border: 1.5px solid var(--primary);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(27,42,74,0.22);
        }
        .btn-outline:active {
            transform: scale(0.97);
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-on-dark);
            padding: 48px 0 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-on-dark-muted);
            line-height: 1.7;
            max-width: 340px;
        }
        .footer-links {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .footer-col h5 {
            font-size: 0.88rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--text-on-dark-muted);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent-glow);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-on-dark-muted);
        }

        /* ============ 响应式设计 ============ */
        @media (max-width: 1024px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .featured-card {
                grid-template-columns: 1fr 1fr;
            }
            .featured-card-body {
                padding: 24px 28px;
            }
            .cat-banner h1 {
                font-size: 2.1rem;
            }
            .cat-banner {
                min-height: 280px;
            }
            .header-cta {
                padding: 8px 16px;
                font-size: 0.82rem;
            }
            .nav-chip {
                padding: 7px 14px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
            }
            .container {
                padding: 0 18px;
            }
            .header-inner {
                gap: 12px;
            }
            .header-cta {
                display: none;
            }
            .header-nav {
                gap: 4px;
            }
            .nav-chip {
                padding: 6px 12px;
                font-size: 0.8rem;
                border-radius: 20px;
            }
            .header-logo {
                font-size: 1.1rem;
            }
            .cat-banner {
                min-height: 260px;
            }
            .cat-banner h1 {
                font-size: 1.7rem;
            }
            .cat-banner-desc {
                font-size: 0.95rem;
            }
            .cat-banner-content {
                padding: 44px 0 60px;
            }
            .cat-stats-row {
                gap: 20px;
            }
            .cat-stat-num {
                font-size: 1.3rem;
            }
            .subcat-inner {
                padding: 14px 16px;
                gap: 6px;
            }
            .subcat-chip {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .articles-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .article-card-body {
                padding: 14px 16px 16px;
            }
            .article-card-body h3 {
                font-size: 0.95rem;
            }
            .article-card-body .excerpt {
                font-size: 0.82rem;
                -webkit-line-clamp: 2;
            }
            .featured-card {
                grid-template-columns: 1fr;
            }
            .featured-card-image {
                aspect-ratio: 16 / 9;
            }
            .featured-card-body {
                padding: 20px 24px;
            }
            .featured-card-body h3 {
                font-size: 1.15rem;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .cta-card {
                padding: 36px 24px;
            }
            .cta-card-content h2 {
                font-size: 1.35rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-links {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .header-logo {
                font-size: 1rem;
            }
            .nav-chip {
                padding: 5px 10px;
                font-size: 0.76rem;
                border-radius: 18px;
            }
            .cat-banner {
                min-height: 220px;
            }
            .cat-banner h1 {
                font-size: 1.4rem;
            }
            .cat-banner-desc {
                font-size: 0.85rem;
            }
            .cat-banner-content {
                padding: 32px 0 48px;
            }
            .cat-stats-row {
                gap: 14px;
            }
            .cat-stat-num {
                font-size: 1.1rem;
            }
            .cat-stat-label {
                font-size: 0.72rem;
            }
            .subcat-section {
                margin-top: -28px;
            }
            .subcat-inner {
                padding: 12px 14px;
                gap: 5px;
                border-radius: var(--radius);
            }
            .subcat-label {
                font-size: 0.78rem;
            }
            .subcat-chip {
                padding: 5px 10px;
                font-size: 0.74rem;
                border-radius: 16px;
            }
            .articles-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .article-card-image {
                aspect-ratio: 16 / 9;
            }
            .section-header {
                margin-bottom: 18px;
            }
            .section-header h2 {
                font-size: 1.15rem;
            }
            .featured-card-body {
                padding: 16px 18px;
            }
            .featured-card-body h3 {
                font-size: 1.05rem;
            }
            .featured-card-body .excerpt {
                font-size: 0.85rem;
            }
            .cta-card {
                padding: 28px 18px;
                border-radius: var(--radius);
            }
            .cta-card-content h2 {
                font-size: 1.2rem;
            }
            .cta-card-content p {
                font-size: 0.88rem;
            }
            .cta-form {
                flex-direction: column;
                gap: 10px;
            }
            .cta-form input {
                flex: 1 1 auto;
                width: 100%;
            }
            .cta-form .btn-primary {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.84rem;
            }
            .footer-links {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-inner {
                gap: 22px;
            }
            .articles-section {
                padding: 32px 0 40px;
            }
            .featured-section {
                padding: 0 0 40px;
            }
            .faq-section {
                padding: 36px 0 40px;
            }
            .cta-section {
                padding: 40px 0 44px;
            }
        }