/* roulang page: index */
:root {
            --color-primary: #1b3a5c;
            --color-primary-dark: #0f2840;
            --color-primary-light: #234b72;
            --color-accent: #c8a45c;
            --color-accent-hover: #d4af6e;
            --color-accent-light: #e8d5a8;
            --color-bg: #faf9f6;
            --color-bg-warm: #f3f0ea;
            --color-surface: #ffffff;
            --color-text: #1e1e1e;
            --color-text-secondary: #5a5f66;
            --color-text-muted: #8b8f96;
            --color-border: #e5e1da;
            --color-border-light: #f0ede7;
            --color-success: #3b7a5c;
            --color-danger: #c0392b;
            --color-dark-bg: #1a2d3d;
            --color-dark-bg-light: #223544;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.13);
            --shadow-nav: 2px 0 24px rgba(0, 0, 0, 0.07);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.40s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', 'STSong', serif;
            --nav-width: 260px;
            --nav-collapsed-width: 0px;
            --header-mobile-height: 60px;
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.68;
            color: var(--color-text);
            background-color: var(--color-bg);
            display: flex;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            padding: 0;
        }

        input {
            font-family: inherit;
        }

        ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        h1, h2, h3, h4, h5, h6 {
            margin: 0;
            line-height: 1.32;
            font-weight: 600;
        }

        p {
            margin: 0;
        }

        /* ========== LEFT SIDEBAR NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--color-surface);
            border-right: 1px solid var(--color-border);
            box-shadow: var(--shadow-nav);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: transform var(--transition-base);
            overflow-y: auto;
            overflow-x: hidden;
        }

        .nav-brand {
            padding: 28px 24px 20px;
            border-bottom: 1px solid var(--color-border-light);
            flex-shrink: 0;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.18rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            font-family: var(--font-display);
            line-height: 1.3;
        }

        .nav-logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-links-wrap {
            flex: 1;
            padding: 16px 16px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .nav-section-label {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-text-muted);
            padding: 12px 12px 6px;
            font-weight: 600;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 0.95rem;
            opacity: 0.7;
            transition: opacity var(--transition-fast);
        }

        .nav-link:hover {
            background: var(--color-bg-warm);
            color: var(--color-primary);
        }

        .nav-link:hover i {
            opacity: 1;
        }

        .nav-link.active {
            background: var(--color-primary);
            color: #ffffff;
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }

        .nav-link.active i {
            opacity: 1;
            color: var(--color-accent-light);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--color-accent);
            border-radius: 3px 0 0 3px;
        }

        .nav-cta-area {
            padding: 20px 16px;
            border-top: 1px solid var(--color-border-light);
            flex-shrink: 0;
        }

        .nav-cta-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            width: 100%;
            padding: 12px 18px;
            border-radius: var(--radius-md);
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.92rem;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-xs);
        }

        .nav-cta-btn:hover {
            background: var(--color-accent-hover);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

        .nav-footer-info {
            padding: 12px 20px 20px;
            font-size: 0.75rem;
            color: var(--color-text-muted);
            text-align: center;
            flex-shrink: 0;
        }

        /* ========== MOBILE TOP HEADER ========== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-mobile-height);
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            box-shadow: var(--shadow-xs);
        }

        .mobile-logo {
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-primary);
            font-family: var(--font-display);
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-logo .logo-icon-sm {
            width: 32px;
            height: 32px;
            border-radius: 5px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .hamburger-btn {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--color-text);
            transition: background var(--transition-fast);
        }

        .hamburger-btn:hover {
            background: var(--color-bg-warm);
        }

        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.45);
            z-index: 998;
            transition: opacity var(--transition-base);
        }

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

        /* ========== MAIN CONTENT AREA ========== */
        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            min-width: 0;
            transition: margin-left var(--transition-base);
        }

        /* ========== CONTAINER ========== */
        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .container-narrow {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 40px;
        }

        /* ========== HERO SECTION ========== */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, rgba(27, 58, 92, 0.88) 0%, rgba(15, 40, 64, 0.92) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            color: #ffffff;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            bottom: 0;
            right: 0;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: rgba(200, 164, 92, 0.08);
            transform: translate(120px, 120px);
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            padding: 60px 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 7px 16px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero-badge i {
            color: var(--color-accent-light);
            font-size: 0.7rem;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 18px;
            font-family: var(--font-display);
            letter-spacing: 0.03em;
            max-width: 640px;
        }

        .hero-title .accent {
            color: var(--color-accent-light);
        }

        .hero-desc {
            font-size: 1.12rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin-bottom: 32px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-accent);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: var(--color-accent-hover);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.45);
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: 70px 0;
        }

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

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.07em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
            font-family: var(--font-display);
            letter-spacing: 0.02em;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

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

        .section-bg-dark {
            background: var(--color-dark-bg);
            color: #ffffff;
        }

        .section-bg-dark .section-title {
            color: #ffffff;
        }

        .section-bg-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== CARDS GRID ========== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

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

        /* ========== CARD COMPONENT ========== */
        .card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-xs);
        }

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

        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }

        .card-body {
            padding: 22px 20px 24px;
        }

        .card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--color-accent);
            background: rgba(200, 164, 92, 0.1);
            padding: 4px 10px;
            border-radius: 50px;
            margin-bottom: 10px;
        }

        .card-title {
            font-size: 1.08rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

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

        .card-link {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }

        .card-link:hover {
            gap: 8px;
            color: var(--color-accent-hover);
        }

        /* ========== STAT CARD ========== */
        .stat-card {
            text-align: center;
            padding: 28px 20px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            box-shadow: var(--shadow-xs);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .stat-number {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--color-primary);
            font-family: var(--font-display);
            letter-spacing: 0.02em;
            line-height: 1.1;
        }

        .stat-number .accent {
            color: var(--color-accent);
        }

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

        /* ========== INFO LIST ========== */
        .info-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .info-list-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 18px;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }

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

        .info-list-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(27, 58, 92, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.1rem;
            color: var(--color-primary);
        }

        .info-list-content h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 4px;
        }

        .info-list-content p {
            font-size: 0.84rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        /* ========== CMS NEWS LIST ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 22px;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-xs);
        }

        .news-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }

        .news-thumb {
            width: 80px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-warm);
        }

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

        .news-title {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

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

        .news-meta .news-cat {
            color: var(--color-accent);
            font-weight: 500;
        }

        .news-arrow {
            color: var(--color-accent);
            font-size: 1rem;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

        .news-item:hover .news-arrow {
            transform: translateX(4px);
        }

        .news-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--color-text-muted);
            font-size: 0.95rem;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--color-border);
        }

        /* ========== FEATURE BLOCK ========== */
        .feature-row {
            display: flex;
            align-items: center;
            gap: 50px;
        }

        .feature-row.reverse {
            flex-direction: row-reverse;
        }

        .feature-img-wrap {
            flex: 1;
            min-width: 0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .feature-img-wrap img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }

        .feature-text {
            flex: 1;
            min-width: 0;
        }

        .feature-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 14px;
            font-family: var(--font-display);
            letter-spacing: 0.02em;
        }

        .feature-text p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .feature-checks {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 20px;
        }

        .feature-checks span {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--color-text);
            font-weight: 500;
        }

        .feature-checks i {
            color: var(--color-success);
            font-size: 0.85rem;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 800px;
            margin: 0 auto;
        }

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

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

        .faq-q {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: background var(--transition-fast);
        }

        .faq-q:hover {
            background: var(--color-bg-warm);
        }

        .faq-q i {
            font-size: 0.8rem;
            color: var(--color-accent);
            transition: transform var(--transition-fast);
        }

        .faq-a {
            padding: 0 22px 18px;
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: none;
        }

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

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

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

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            color: #ffffff;
            text-align: center;
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(200, 164, 92, 0.1);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(200, 164, 92, 0.08);
            pointer-events: none;
        }

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

        .cta-title {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            font-family: var(--font-display);
            letter-spacing: 0.02em;
        }

        .cta-desc {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.78);
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-dark-bg);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
            font-family: var(--font-display);
            letter-spacing: 0.02em;
        }

        .footer-brand-desc {
            font-size: 0.85rem;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

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

        .footer-col ul li a {
            font-size: 0.84rem;
            color: rgba(255, 255, 255, 0.6);
            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, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cards-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-row {
                flex-direction: column;
                gap: 30px;
            }
            .feature-row.reverse {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .section {
                padding: 50px 0;
            }
            .container,
            .container-narrow {
                padding: 0 28px;
            }
        }

        @media (max-width: 768px) {
            body {
                flex-direction: column;
            }

            .site-nav {
                transform: translateX(-100%);
                width: 280px;
            }

            .site-nav.mobile-open {
                transform: translateX(0);
            }

            .mobile-header {
                display: flex;
            }

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

            .main-content {
                margin-left: 0;
                margin-top: var(--header-mobile-height);
            }

            .hero-section {
                min-height: 400px;
            }

            .hero-title {
                font-size: 1.75rem;
                max-width: 100%;
            }

            .hero-desc {
                font-size: 0.95rem;
                max-width: 100%;
            }

            .cards-grid {
                grid-template-columns: 1fr;
            }
            .cards-grid-2 {
                grid-template-columns: 1fr;
            }
            .cards-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section {
                padding: 40px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .container,
            .container-narrow {
                padding: 0 18px;
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .news-thumb {
                width: 100%;
                height: 140px;
            }
            .news-title {
                white-space: normal;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .hero-section {
                min-height: 340px;
            }
            .hero-title {
                font-size: 1.45rem;
            }
            .hero-desc {
                font-size: 0.88rem;
            }
            .hero-btns {
                flex-direction: column;
                gap: 10px;
            }
            .btn {
                justify-content: center;
                width: 100%;
            }
            .cards-grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .cta-title {
                font-size: 1.35rem;
            }
            .feature-text h3 {
                font-size: 1.2rem;
            }
            .container,
            .container-narrow {
                padding: 0 14px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a3c5e;
            --color-primary-light: #2a5280;
            --color-primary-dark: #0f2840;
            --color-accent: #c8944a;
            --color-accent-light: #d9b36c;
            --color-accent-dark: #a67a32;
            --color-bg: #f8f9fb;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-secondary: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #16a34a;
            --color-warning: #f59e0b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 8px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.13), 0 8px 16px rgba(0, 0, 0, 0.07);
            --nav-width: 260px;
            --nav-collapsed-width: 0px;
            --header-mobile-height: 56px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }

        *,
        *::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: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: row;
        }

        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 {
            list-style: none;
        }

        /* ========== 左侧导航 ========== */
        .site-nav {
            width: var(--nav-width);
            min-width: var(--nav-width);
            height: 100vh;
            position: sticky;
            top: 0;
            left: 0;
            background: linear-gradient(180deg, var(--color-primary-dark) 0%, var(--color-primary) 40%, #1e4570 100%);
            color: #ffffff;
            display: flex;
            flex-direction: column;
            padding: 28px 20px 20px;
            z-index: 100;
            box-shadow: 4px 0 24px rgba(0, 0, 0, 0.15);
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition-base);
        }

        .site-nav::-webkit-scrollbar {
            width: 4px;
        }

        .site-nav::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.2);
            border-radius: 4px;
        }

        .nav-brand {
            margin-bottom: 32px;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.05rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.02em;
            transition: opacity var(--transition-fast);
            white-space: nowrap;
        }

        .nav-logo:hover {
            opacity: 0.88;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-section-label {
            display: block;
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: rgba(255, 255, 255, 0.45);
            margin-bottom: 10px;
            padding-left: 4px;
            font-weight: 600;
        }

        .nav-links-wrap {
            display: flex;
            flex-direction: column;
            gap: 3px;
            flex: 0 0 auto;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.93rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.78);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .nav-link:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #ffffff;
        }

        .nav-link.active {
            background: rgba(255, 255, 255, 0.16);
            color: #ffffff;
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--color-accent);
            border-radius: var(--radius-sm);
        }

        .nav-cta-area {
            margin-top: auto;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        .nav-cta-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 18px;
            background: var(--color-accent);
            color: #ffffff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .nav-cta-btn:hover {
            background: var(--color-accent-light);
            box-shadow: 0 4px 16px rgba(200, 148, 74, 0.35);
            transform: translateY(-1px);
        }

        .nav-footer-info {
            margin-top: 16px;
            font-size: 0.72rem;
            color: rgba(255, 255, 255, 0.35);
            text-align: center;
            white-space: nowrap;
            letter-spacing: 0.03em;
        }

        /* ========== 移动端顶部导航 ========== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-mobile-height);
            background: var(--color-primary-dark);
            color: #ffffff;
            z-index: 200;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }

        .mobile-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 0.95rem;
            color: #ffffff;
        }

        .mobile-logo .logo-icon {
            width: 30px;
            height: 30px;
            font-size: 0.85rem;
            background: var(--color-accent);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .mobile-menu-toggle {
            background: none;
            border: none;
            color: #ffffff;
            font-size: 1.4rem;
            cursor: pointer;
            padding: 6px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 190;
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .mobile-nav-overlay.open {
            opacity: 1;
        }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 280px;
            height: 100vh;
            background: var(--color-primary-dark);
            color: #ffffff;
            z-index: 195;
            padding: 24px 20px;
            flex-direction: column;
            gap: 6px;
            transform: translateX(-100%);
            transition: transform var(--transition-base);
            overflow-y: auto;
        }

        .mobile-nav-panel.open {
            transform: translateX(0);
        }

        .mobile-nav-panel .nav-link {
            font-size: 0.95rem;
            padding: 13px 14px;
        }

        .mobile-nav-panel .nav-cta-btn {
            margin-top: 16px;
        }

        .mobile-nav-close {
            align-self: flex-end;
            background: none;
            border: none;
            color: #ffffff;
            font-size: 1.3rem;
            cursor: pointer;
            padding: 6px;
            margin-bottom: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

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

        /* ========== 主内容区 ========== */
        .main-content {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        /* ========== 分类页Banner ========== */
        .category-banner {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #1e4570 100%);
            color: #ffffff;
            padding: 56px 40px 48px;
            position: relative;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(200, 148, 74, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-banner-inner {
            position: relative;
            z-index: 1;
            max-width: 960px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.35);
            font-size: 0.7rem;
        }

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

        .category-banner h1 {
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: 0.01em;
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .category-banner .cat-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            line-height: 1.6;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
            backdrop-filter: blur(6px);
        }

        .category-badge i {
            font-size: 0.7rem;
            color: var(--color-accent-light);
        }

        /* ========== 文章列表区域 ========== */
        .articles-section {
            padding: 48px 40px;
            flex: 1;
        }

        .articles-section .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            flex-wrap: wrap;
            gap: 16px;
        }

        .articles-section .section-header h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--color-text);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .articles-section .section-header h2 i {
            color: var(--color-accent);
            font-size: 1.3rem;
        }

        .article-count {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            background: var(--color-border-light);
            padding: 6px 14px;
            border-radius: 20px;
            font-weight: 500;
        }

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

        .article-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border-light);
            height: 100%;
        }

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

        .article-card-image {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            background: #e8ecf1;
            transition: transform var(--transition-slow);
        }

        .article-card:hover .article-card-image {
            transform: scale(1.04);
        }

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

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

        .article-card-meta .cat-tag {
            background: #eef2f7;
            color: var(--color-primary);
            padding: 3px 10px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 0.72rem;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        .article-card-title {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.45;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

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

        .article-card-excerpt {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .article-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            padding-top: 12px;
            border-top: 1px solid var(--color-border-light);
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        .article-card-link {
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.82rem;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }

        .article-card-link:hover {
            gap: 8px;
            color: var(--color-accent-dark);
        }

        .article-card-link i {
            font-size: 0.7rem;
        }

        /* ========== 分页 ========== */
        .pagination-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .page-btn:hover {
            background: var(--color-border-light);
            border-color: var(--color-text-muted);
        }

        .page-btn.active {
            background: var(--color-primary);
            color: #ffffff;
            border-color: var(--color-primary);
            font-weight: 600;
            pointer-events: none;
        }

        .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ========== CTA区域 ========== */
        .cta-section {
            background: linear-gradient(135deg, #f0f4f8 0%, #e8eef5 50%, #f0f4f8 100%);
            padding: 56px 40px;
            text-align: center;
            border-top: 1px solid var(--color-border-light);
        }

        .cta-section h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 500px;
            margin: 0 auto 24px;
            line-height: 1.6;
        }

        .cta-btn-group {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            border: 2px solid transparent;
            letter-spacing: 0.02em;
        }

        .btn-primary {
            background: var(--color-accent);
            color: #ffffff;
            border-color: var(--color-accent);
        }

        .btn-primary:hover {
            background: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            box-shadow: 0 6px 20px rgba(200, 148, 74, 0.3);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

        .btn-outline:hover {
            background: var(--color-primary);
            color: #ffffff;
            box-shadow: 0 6px 20px rgba(26, 60, 94, 0.2);
            transform: translateY(-2px);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.82);
            padding: 48px 40px 24px;
            font-size: 0.88rem;
            line-height: 1.7;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            max-width: 1100px;
        }

        .footer-brand-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .footer-brand-desc {
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            font-size: 0.84rem;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            transition: all var(--transition-fast);
            font-size: 0.84rem;
        }

        .footer-col ul li a:hover {
            color: var(--color-accent-light);
            padding-left: 4px;
        }

        .footer-bottom {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
            max-width: 1100px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1200px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 900px) {
            :root {
                --nav-width: 220px;
            }

            .site-nav {
                padding: 20px 14px 16px;
            }

            .nav-logo {
                font-size: 0.9rem;
                gap: 6px;
            }

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }

            .nav-link {
                font-size: 0.84rem;
                padding: 9px 10px;
            }

            .category-banner {
                padding: 40px 28px 36px;
            }

            .category-banner h1 {
                font-size: 1.65rem;
            }

            .articles-section {
                padding: 32px 28px;
            }

            .site-footer {
                padding: 36px 28px 20px;
            }
        }

        @media (max-width: 768px) {
            body {
                flex-direction: column;
            }

            .site-nav {
                display: none;
            }

            .mobile-header {
                display: flex;
            }

            .mobile-nav-overlay {
                display: block;
            }

            .mobile-nav-panel {
                display: flex;
            }

            .main-content {
                padding-top: var(--header-mobile-height);
            }

            .articles-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .category-banner {
                padding: 32px 18px 28px;
            }

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

            .category-banner .cat-desc {
                font-size: 0.9rem;
            }

            .articles-section {
                padding: 24px 16px;
            }

            .articles-section .section-header {
                flex-direction: column;
                align-items: flex-start;
            }

            .articles-section .section-header h2 {
                font-size: 1.3rem;
            }

            .cta-section {
                padding: 36px 16px;
            }

            .cta-section h3 {
                font-size: 1.3rem;
            }

            .site-footer {
                padding: 28px 16px 18px;
            }

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

            .btn {
                padding: 10px 18px;
                font-size: 0.88rem;
            }

            .article-card-title {
                font-size: 1rem;
            }
        }

        @media (max-width: 480px) {
            .category-banner h1 {
                font-size: 1.25rem;
            }

            .breadcrumb {
                font-size: 0.75rem;
            }

            .article-card-body {
                padding: 14px 12px 14px;
            }

            .pagination-wrap {
                gap: 3px;
            }

            .page-btn {
                min-width: 34px;
                height: 34px;
                font-size: 0.8rem;
                padding: 0 8px;
            }

            .cta-btn-group {
                flex-direction: column;
                align-items: stretch;
            }

            .btn {
                justify-content: center;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #1B3A5C;
            --color-primary-light: #264e78;
            --color-primary-dark: #122a44;
            --color-accent: #C8963E;
            --color-accent-light: #d9a94f;
            --color-accent-dark: #a87a2e;
            --color-bg: #f4f5f7;
            --color-surface: #ffffff;
            --color-surface-alt: #f0f2f5;
            --color-text: #1a1a2e;
            --color-text-secondary: #5a6070;
            --color-text-muted: #8b919e;
            --color-border: #e2e5ea;
            --color-border-light: #eef0f3;
            --color-success: #2d8a56;
            --color-warning: #e8a020;
            --color-danger: #c0392b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 18px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.07), 0 4px 16px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.09), 0 8px 28px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 8px 24px rgba(0, 0, 0, 0.11), 0 16px 40px rgba(0, 0, 0, 0.07);
            --nav-width: 248px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-serif: 'Noto Serif SC', 'STSong', 'Songti SC', 'SimSun', 'Georgia', serif;
            --transition-fast: 0.15s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        *,
        *::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: var(--color-bg);
            min-height: 100vh;
            display: flex;
        }

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

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

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

        input,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ========== SITE NAVIGATION (Left Sidebar) ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--color-primary);
            color: #ffffff;
            display: flex;
            flex-direction: column;
            z-index: 1000;
            padding: 0;
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.18);
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition-normal);
        }

        .site-nav::-webkit-scrollbar {
            width: 4px;
        }

        .site-nav::-webkit-scrollbar-track {
            background: transparent;
        }

        .site-nav::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.2);
            border-radius: 4px;
        }

        .nav-brand {
            padding: 22px 20px 18px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            flex-shrink: 0;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 1.08rem;
            letter-spacing: 0.02em;
            transition: opacity var(--transition-fast);
            white-space: nowrap;
        }

        .nav-logo:hover {
            opacity: 0.88;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            flex-shrink: 0;
            color: #fff;
        }

        .nav-links-wrap {
            flex: 1;
            padding: 16px 12px;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .nav-section-label {
            display: block;
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: rgba(255, 255, 255, 0.45);
            padding: 8px 12px 6px 12px;
            font-weight: 600;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.93rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.78);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-link i {
            width: 18px;
            text-align: center;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .nav-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
        }

        .nav-link.active {
            background: rgba(255, 255, 255, 0.13);
            color: #ffffff;
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--color-accent);
            border-radius: var(--radius-sm);
            padding-left: 11px;
        }

        .nav-cta-area {
            padding: 16px 16px 12px 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            flex-shrink: 0;
        }

        .nav-cta-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            width: 100%;
            padding: 11px 16px;
            background: var(--color-accent);
            color: #ffffff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            background: var(--color-accent-light);
            box-shadow: 0 4px 14px rgba(200, 150, 62, 0.35);
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(200, 150, 62, 0.25);
        }

        .nav-footer-info {
            padding: 10px 20px 16px 20px;
            font-size: 0.72rem;
            color: rgba(255, 255, 255, 0.35);
            flex-shrink: 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            letter-spacing: 0.03em;
        }

        /* ========== MOBILE NAV TOGGLE ========== */
        .mobile-nav-toggle {
            display: none;
            position: fixed;
            top: 12px;
            left: 12px;
            z-index: 1100;
            width: 40px;
            height: 40px;
            background: var(--color-primary);
            color: #ffffff;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-fast);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .mobile-nav-toggle:hover {
            background: var(--color-primary-light);
        }

        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
        }

        .nav-overlay.active {
            display: block;
        }

        /* ========== MAIN CONTENT WRAPPER ========== */
        .main-wrapper {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ========== CONTAINER ========== */
        .container {
            width: 100%;
            max-width: 1160px;
            margin: 0 auto;
            padding: 0 28px;
        }

        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 28px;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 13px 0;
            position: sticky;
            top: 0;
            z-index: 50;
            box-shadow: var(--shadow-xs);
        }

        .breadcrumb-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

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

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

        .breadcrumb-sep {
            color: var(--color-border);
            font-size: 0.7rem;
        }

        .breadcrumb-current {
            color: var(--color-text);
            font-weight: 500;
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ========== ARTICLE LAYOUT ========== */
        .article-layout {
            display: flex;
            gap: 36px;
            padding: 32px 0 48px;
        }

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

        .article-sidebar {
            width: 300px;
            flex-shrink: 0;
        }

        /* ========== ARTICLE HEADER ========== */
        .article-header {
            margin-bottom: 24px;
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: rgba(200, 150, 62, 0.1);
            color: var(--color-accent-dark);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 20px;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .article-category-tag i {
            font-size: 0.65rem;
        }

        .article-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-text);
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 0.88rem;
            color: var(--color-text-muted);
        }

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

        .article-meta-item i {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
        }

        /* ========== ARTICLE FEATURED IMAGE ========== */
        .article-featured-image {
            margin-bottom: 28px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: var(--color-surface-alt);
            position: relative;
        }

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

        /* ========== ARTICLE BODY CONTENT ========== */
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--color-text);
            background: var(--color-surface);
            padding: 32px 36px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }

        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 32px 0 16px;
            padding-left: 14px;
            border-left: 4px solid var(--color-accent);
            color: var(--color-primary-dark);
            line-height: 1.4;
        }

        .article-body h2:first-child {
            margin-top: 0;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 24px 0 12px;
            color: var(--color-text);
            line-height: 1.4;
        }

        .article-body p {
            margin-bottom: 16px;
            text-align: justify;
        }

        .article-body p:last-child {
            margin-bottom: 0;
        }

        .article-body ul,
        .article-body ol {
            margin: 12px 0 16px 20px;
            padding: 0;
        }

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

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

        .article-body blockquote {
            margin: 20px 0;
            padding: 16px 20px;
            background: var(--color-surface-alt);
            border-left: 4px solid var(--color-accent);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--color-text-secondary);
            font-size: 1rem;
        }

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

        .article-body a {
            color: var(--color-primary-light);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }

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

        .article-body img {
            border-radius: var(--radius-md);
            margin: 16px 0;
            max-width: 100%;
            box-shadow: var(--shadow-sm);
        }

        .article-body hr {
            border: none;
            border-top: 1px solid var(--color-border-light);
            margin: 24px 0;
        }

        .article-body code {
            background: var(--color-surface-alt);
            padding: 2px 6px;
            border-radius: 3px;
            font-size: 0.9em;
            font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
        }

        /* ========== ARTICLE FOOTER ========== */
        .article-footer-section {
            margin-top: 24px;
            padding: 20px 24px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }

        .article-tags-label {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        .article-tag {
            display: inline-block;
            font-size: 0.78rem;
            padding: 4px 10px;
            background: var(--color-surface-alt);
            color: var(--color-text-secondary);
            border-radius: 16px;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .article-tag:hover {
            border-color: var(--color-accent);
            color: var(--color-accent-dark);
            background: rgba(200, 150, 62, 0.06);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--color-text-muted);
        }

        .article-share-btn {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-surface-alt);
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            font-size: 0.9rem;
            border: 1px solid transparent;
        }

        .article-share-btn:hover {
            background: var(--color-primary);
            color: #ffffff;
            border-color: var(--color-primary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

        /* ========== SIDEBAR ========== */
        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            margin-bottom: 20px;
        }

        .sidebar-card-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-accent);
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

        .sidebar-cat-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-cat-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 9px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
        }

        .sidebar-cat-link:hover {
            background: var(--color-surface-alt);
            color: var(--color-accent-dark);
        }

        .sidebar-cat-count {
            font-size: 0.75rem;
            background: var(--color-surface-alt);
            color: var(--color-text-muted);
            padding: 3px 8px;
            border-radius: 10px;
            font-weight: 500;
        }

        .sidebar-post-item {
            display: flex;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }

        .sidebar-post-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .sidebar-post-item:first-child {
            padding-top: 0;
        }

        .sidebar-post-thumb {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--color-surface-alt);
        }

        .sidebar-post-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .sidebar-post-info {
            flex: 1;
            min-width: 0;
        }

        .sidebar-post-title {
            font-size: 0.85rem;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .sidebar-post-item:hover .sidebar-post-title {
            color: var(--color-accent-dark);
        }

        .sidebar-post-date {
            font-size: 0.73rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* ========== RELATED POSTS ========== */
        .related-posts-section {
            margin-top: 36px;
        }

        .section-heading {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-heading::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--color-border);
            max-width: 60px;
            min-width: 30px;
        }

        .related-posts-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }

        .related-post-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }

        .related-post-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: var(--color-accent);
        }

        .related-post-img {
            width: 100%;
            height: 160px;
            overflow: hidden;
            background: var(--color-surface-alt);
        }

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

        .related-post-card:hover .related-post-img img {
            transform: scale(1.04);
        }

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

        .related-post-cat {
            font-size: 0.72rem;
            color: var(--color-accent-dark);
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 6px;
        }

        .related-post-title {
            font-size: 0.95rem;
            font-weight: 600;
            line-height: 1.45;
            color: var(--color-text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
            transition: color var(--transition-fast);
            flex: 1;
        }

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

        .related-post-date {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            margin-top: auto;
        }

        /* ========== NOT FOUND STATE ========== */
        .not-found-block {
            text-align: center;
            padding: 60px 30px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }

        .not-found-icon {
            font-size: 3.5rem;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            opacity: 0.6;
        }

        .not-found-block h2 {
            font-size: 1.5rem;
            margin-bottom: 10px;
            color: var(--color-text);
        }

        .not-found-block p {
            color: var(--color-text-secondary);
            margin-bottom: 20px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #ffffff;
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: var(--color-primary-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-xs);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #ffffff;
            box-shadow: var(--shadow-sm);
        }

        .btn-accent:hover {
            background: var(--color-accent-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }

        .btn-outline:hover {
            background: var(--color-primary);
            color: #ffffff;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary);
            color: #ffffff;
            padding: 44px 0;
            margin-top: 40px;
            border-radius: 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -50px;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, 0.025);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }

        .cta-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .cta-text p {
            font-size: 0.95rem;
            opacity: 0.8;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #111827;
            color: #cbd5e1;
            padding: 40px 0 0;
            font-size: 0.9rem;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
            padding-bottom: 28px;
        }

        .footer-brand-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }

        .footer-brand-desc {
            font-size: 0.85rem;
            color: #94a3b8;
            line-height: 1.6;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 7px;
        }

        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.85rem;
            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, 0.1);
            padding: 16px 0;
            text-align: center;
            font-size: 0.78rem;
            color: #64748b;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1100px) {
            .article-layout {
                gap: 24px;
            }
            .article-sidebar {
                width: 260px;
            }
            .related-posts-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .article-title {
                font-size: 1.7rem;
            }
            .article-body {
                padding: 24px 22px;
                font-size: 1rem;
            }
        }

        @media (max-width: 960px) {
            .site-nav {
                transform: translateX(-100%);
            }
            .site-nav.mobile-open {
                transform: translateX(0);
            }
            .mobile-nav-toggle {
                display: flex;
            }
            .main-wrapper {
                margin-left: 0;
            }
            .article-layout {
                flex-direction: column;
                gap: 20px;
            }
            .article-sidebar {
                width: 100%;
            }
            .container,
            .container-narrow {
                padding: 0 16px;
            }
            .article-title {
                font-size: 1.5rem;
            }
            .article-body {
                padding: 20px 16px;
                font-size: 0.98rem;
            }
            .related-posts-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .breadcrumb-bar {
                top: 0;
                padding-left: 50px;
            }
            .cta-inner {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 600px) {
            .article-title {
                font-size: 1.3rem;
            }
            .article-body {
                padding: 16px 14px;
                font-size: 0.93rem;
                border-radius: var(--radius-md);
            }
            .article-body h2 {
                font-size: 1.2rem;
                padding-left: 10px;
            }
            .article-body h3 {
                font-size: 1.05rem;
            }
            .article-featured-image img {
                max-height: 240px;
            }
            .related-posts-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .related-post-img {
                height: 140px;
            }
            .article-footer-section {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 14px 16px;
            }
            .article-meta {
                gap: 10px;
                font-size: 0.8rem;
            }
            .breadcrumb-inner {
                font-size: 0.78rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .container,
            .container-narrow {
                padding: 0 12px;
            }
            .article-sidebar {
                width: 100%;
            }
            .sidebar-card {
                padding: 16px 14px;
            }
        }