/* roulang page: index */
:root {
            --color-primary: #1e3a5f;
            --color-primary-light: #2c5282;
            --color-accent: #3b82f6;
            --color-accent-hover: #2563eb;
            --color-gold: #f59e0b;
            --color-gold-light: #fbbf24;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-surface-alt: #f1f5f9;
            --color-text: #1e293b;
            --color-text-secondary: #475569;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-danger: #ef4444;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --nav-height: 72px;
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

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

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 1400px) {
            .container-custom {
                max-width: 1280px;
            }
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal), background var(--transition-normal);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
        }

        .nav-brand {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition-fast);
        }

        .nav-brand:hover {
            color: var(--color-accent);
        }

        .nav-brand-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li {
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: var(--radius-full);
            position: relative;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-links a:hover {
            color: var(--color-primary);
            background: var(--color-surface-alt);
        }

        .nav-links a.active {
            color: var(--color-accent);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-accent);
        }

        .navbar-toggler {
            border: none;
            background: transparent;
            padding: 8px;
            cursor: pointer;
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 32px;
            justify-content: center;
            align-items: center;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .navbar-toggler:hover {
            background: var(--color-surface-alt);
        }

        .navbar-toggler span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: transform var(--transition-fast), opacity var(--transition-fast);
        }

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

        .navbar-toggler.active span:nth-child(2) {
            opacity: 0;
        }

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

        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            z-index: 1049;
            padding: 24px 20px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }

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

        .mobile-nav-overlay a {
            display: block;
            padding: 14px 20px;
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-md);
            transition: background var(--transition-fast), color var(--transition-fast);
            text-align: center;
        }

        .mobile-nav-overlay a:hover,
        .mobile-nav-overlay a.active {
            background: var(--color-surface-alt);
            color: var(--color-accent);
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .navbar-toggler {
                display: flex;
            }
            .nav-brand {
                font-size: 1.15rem;
            }
            .nav-brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
        }

        @media (min-width: 769px) {
            .mobile-nav-overlay {
                display: none !important;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.72) 0%, rgba(30, 58, 95, 0.65) 50%, rgba(15, 23, 42, 0.78) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            padding: 60px 24px;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-full);
            color: #fff;
            font-size: 0.9rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.03em;
            margin-bottom: 18px;
            line-height: 1.25;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border-radius: var(--radius-full);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
        }

        .btn-hero-primary:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(59, 130, 246, 0.5);
        }

        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border-radius: var(--radius-full);
            border: 2px solid rgba(255, 255, 255, 0.6);
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 480px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                max-width: 320px;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .hero-section {
                min-height: 420px;
            }
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-content {
                padding: 40px 16px;
            }
        }

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

        .section-alt {
            background: var(--color-surface);
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section {
                padding: 52px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-header {
                margin-bottom: 36px;
            }
        }

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

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

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--color-accent);
            border-radius: 0 0 4px 4px;
            opacity: 0;
            transition: opacity var(--transition-normal);
        }

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

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

        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--color-accent);
            transition: transform var(--transition-normal);
        }

        .feature-card:hover .feature-icon {
            transform: scale(1.08);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--color-primary);
        }

        .feature-card p {
            font-size: 0.93rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
            margin: 0;
        }

        @media (max-width: 992px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== CATEGORY CARDS ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            background-size: cover;
            background-position: center;
            cursor: pointer;
            transition: all var(--transition-slow);
            text-decoration: none;
        }

        .category-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.25) 50%, rgba(15, 23, 42, 0.05) 100%);
            z-index: 1;
            transition: background var(--transition-slow);
        }

        .category-card:hover::after {
            background: linear-gradient(0deg, rgba(15, 23, 42, 0.9) 0%, rgba(15, 23, 42, 0.4) 50%, rgba(15, 23, 42, 0.1) 100%);
        }

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

        .category-card-content {
            position: relative;
            z-index: 2;
            padding: 32px 28px;
            width: 100%;
        }

        .category-card-tag {
            display: inline-block;
            padding: 5px 14px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: var(--radius-full);
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .category-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .category-card p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.8);
            margin: 0;
            line-height: 1.5;
        }

        .category-card-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 14px;
            transition: gap var(--transition-fast);
        }

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

        @media (max-width: 768px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
            .category-card {
                min-height: 260px;
            }
        }

        /* ========== CMS LIST ========== */
        .cms-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .cms-list-item {
            display: flex;
            gap: 20px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            transition: all var(--transition-fast);
            text-decoration: none;
            color: inherit;
            align-items: center;
        }

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

        .cms-list-thumb {
            width: 100px;
            height: 72px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-surface-alt);
        }

        .cms-list-info {
            flex: 1;
            min-width: 0;
        }

        .cms-list-info h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            line-height: 1.4;
        }

        .cms-list-meta {
            display: flex;
            gap: 12px;
            align-items: center;
            flex-wrap: wrap;
        }

        .cms-list-meta span {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        .cms-list-tag {
            display: inline-block;
            padding: 3px 10px;
            background: #eff6ff;
            color: var(--color-accent);
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
        }

        .cms-list-desc {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin: 4px 0 0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .cms-empty {
            text-align: center;
            padding: 48px 20px;
            color: var(--color-text-muted);
            font-size: 1rem;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--color-border);
        }

        @media (max-width: 576px) {
            .cms-list-item {
                flex-direction: column;
                align-items: flex-start;
                padding: 16px;
            }
            .cms-list-thumb {
                width: 100%;
                height: 160px;
            }
        }

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

        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
        }

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

        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: 0.02em;
            line-height: 1;
            margin-bottom: 8px;
        }

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

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 400px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 20px 12px;
            }
        }

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

        .content-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all var(--transition-normal);
        }

        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .content-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

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

        .content-card-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-primary);
            line-height: 1.4;
        }

        .content-card-body p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        .content-card-footer {
            padding: 14px 20px;
            border-top: 1px solid var(--color-border-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .content-card-tag {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-accent);
            background: #eff6ff;
            padding: 4px 12px;
            border-radius: var(--radius-full);
        }

        .content-card-date {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        @media (max-width: 992px) {
            .content-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .content-cards-grid {
                grid-template-columns: 1fr;
            }
            .content-card-img {
                height: 180px;
            }
        }

        /* ========== FAQ ========== */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }

        .accordion-faq .accordion-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            background: var(--color-surface);
            transition: box-shadow var(--transition-fast);
        }

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

        .accordion-faq .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            background: var(--color-surface);
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            border-radius: var(--radius-md) !important;
            transition: background var(--transition-fast);
        }

        .accordion-faq .accordion-button:not(.collapsed) {
            color: var(--color-accent);
            background: #f8faff;
            box-shadow: none;
            border-bottom: 1px solid var(--color-border-light);
        }

        .accordion-faq .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
            border-color: var(--color-accent);
        }

        .accordion-faq .accordion-button::after {
            transition: transform var(--transition-fast);
        }

        .accordion-faq .accordion-body {
            padding: 18px 22px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            font-size: 0.95rem;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, #1a4972 50%, var(--color-primary-light) 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 650px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .cta-content h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .cta-content p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 30px;
            line-height: 1.7;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 36px;
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--radius-full);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        .btn-cta:hover {
            background: #f0f4ff;
            color: var(--color-accent);
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-content h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 28px;
            margin-top: auto;
        }

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

        .footer-brand-name {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 320px;
        }

        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

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

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand-desc {
                max-width: 100%;
            }
        }

        /* ========== UTILS ========== */
        .text-accent {
            color: var(--color-accent);
        }
        .fw-800 {
            font-weight: 800;
        }
        .gap-2 {
            gap: 8px;
        }

        /* ========== FOCUS VISIBLE ========== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(59, 130, 246, 0.4);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .accordion-button:focus-visible {
            outline-offset: -2px;
        }

/* roulang page: article */
:root {
            --color-primary: #1a1a2e;
            --color-accent: #c8963e;
            --color-accent-light: #e8c170;
            --color-bg: #ffffff;
            --color-bg-alt: #f8f9fa;
            --color-bg-warm: #fdfaf5;
            --color-text: #1f1f2b;
            --color-text-secondary: #5a5d6b;
            --color-text-muted: #8b8f9e;
            --color-border: #e2e4ea;
            --color-border-light: #eef0f4;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
            --font-serif: 'Georgia', 'Noto Serif SC', 'Source Han Serif SC', serif;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s ease;
            --max-width-content: 780px;
            --max-width-wide: 1120px;
        }

        *,
        *::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: 1rem;
            line-height: 1.72;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

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

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-smooth);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: var(--max-width-wide);
            margin: 0 auto;
            padding: 0 24px;
        }
        .brand-logo {
            font-family: var(--font-serif);
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--color-primary);
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .brand-logo:hover {
            color: var(--color-accent);
        }
        .brand-logo .logo-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            background: var(--color-accent);
            border-radius: 50%;
            margin-left: 2px;
            vertical-align: middle;
            position: relative;
            top: -2px;
        }
        .nav-links {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 2px;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: inline-block;
            padding: 8px 18px;
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 20px;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.02em;
        }
        .nav-links li a:hover {
            color: var(--color-primary);
            background: var(--color-bg-alt);
        }
        .nav-links li a.active {
            color: var(--color-accent);
            font-weight: 600;
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2.5px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-text);
            padding: 6px;
            cursor: pointer;
            line-height: 1;
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                gap: 0;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                padding: 12px 0;
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                display: block;
                padding: 12px 24px;
                border-radius: 0;
                font-size: 1rem;
            }
            .nav-links li a.active::after {
                display: none;
            }
            .nav-links li a.active {
                background: var(--color-bg-warm);
                border-left: 3px solid var(--color-accent);
            }
        }

        /* ========== MAIN LAYOUT ========== */
        .page-main {
            flex: 1;
            padding-top: 40px;
            padding-bottom: 72px;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.875rem;
            color: var(--color-text-muted);
            margin-bottom: 28px;
        }
        .breadcrumb-custom a {
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb-custom a:hover {
            color: var(--color-accent);
        }
        .breadcrumb-custom .separator {
            color: var(--color-border);
            user-select: none;
        }
        .breadcrumb-custom .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ========== ARTICLE HEADER ========== */
        .article-header {
            margin-bottom: 32px;
        }
        .article-category-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--color-accent);
            background: var(--color-bg-warm);
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
        }
        .article-title {
            font-family: var(--font-serif);
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-primary);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
            padding-bottom: 20px;
            border-bottom: 1px solid var(--color-border-light);
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .article-meta .meta-icon {
            font-size: 0.85rem;
            color: var(--color-accent-light);
        }

        /* ========== FEATURED IMAGE ========== */
        .article-featured-image {
            margin-bottom: 36px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .article-featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 16 / 9;
        }

        /* ========== ARTICLE BODY ========== */
        .article-body {
            font-family: var(--font-sans);
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--color-text);
            letter-spacing: 0.01em;
        }
        .article-body h2 {
            font-family: var(--font-serif);
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-top: 40px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--color-border-light);
        }
        .article-body h3 {
            font-family: var(--font-serif);
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-top: 28px;
            margin-bottom: 12px;
        }
        .article-body p {
            margin-bottom: 18px;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 18px;
            padding-left: 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--color-accent-light);
            background: var(--color-bg-warm);
            padding: 18px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--color-text-secondary);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body a {
            color: var(--color-accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: var(--color-primary);
        }
        .article-body code {
            background: var(--color-bg-alt);
            padding: 2px 7px;
            border-radius: 4px;
            font-size: 0.9em;
            color: #c0392b;
        }
        .article-body pre {
            background: var(--color-bg-alt);
            padding: 16px 20px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            font-size: 0.9rem;
            margin: 20px 0;
            border: 1px solid var(--color-border-light);
        }

        /* ========== ARTICLE FOOTER ========== */
        .article-footer-section {
            margin-top: 48px;
            padding-top: 28px;
            border-top: 1px solid var(--color-border-light);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .article-tags span.tag-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }
        .article-tags .tag {
            display: inline-block;
            font-size: 0.8rem;
            padding: 4px 12px;
            border-radius: 16px;
            background: var(--color-bg-alt);
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }
        .article-tags .tag:hover {
            border-color: var(--color-border);
            color: var(--color-primary);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-bg-warm);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            margin-top: 48px;
            text-align: center;
            border: 1px solid var(--color-border-light);
        }
        .cta-section h4 {
            font-family: var(--font-serif);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .cta-section p {
            color: var(--color-text-secondary);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }
        .btn-accent {
            display: inline-block;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            background: var(--color-accent);
            border: none;
            border-radius: 24px;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            text-decoration: none;
            cursor: pointer;
            box-shadow: 0 2px 8px rgba(200, 150, 62, 0.25);
        }
        .btn-accent:hover {
            background: #b8832f;
            color: #fff;
            box-shadow: 0 4px 18px rgba(200, 150, 62, 0.4);
            transform: translateY(-1px);
        }
        .btn-outline-accent {
            display: inline-block;
            padding: 11px 26px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-accent);
            background: transparent;
            border: 2px solid var(--color-accent);
            border-radius: 24px;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            text-decoration: none;
            cursor: pointer;
        }
        .btn-outline-accent:hover {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(200, 150, 62, 0.3);
            transform: translateY(-1px);
        }

        /* ========== NOT FOUND STATE ========== */
        .not-found-block {
            text-align: center;
            padding: 72px 24px;
        }
        .not-found-block .nf-icon {
            font-size: 3.5rem;
            color: var(--color-border);
            margin-bottom: 20px;
        }
        .not-found-block h2 {
            font-family: var(--font-serif);
            font-size: 1.6rem;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .not-found-block p {
            color: var(--color-text-muted);
            margin-bottom: 24px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 52px 0 28px;
            margin-top: auto;
        }
        .site-footer .container-custom {
            max-width: var(--max-width-wide);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand-name {
            font-family: var(--font-serif);
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }
        .footer-brand-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }
        .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: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
            letter-spacing: 0.02em;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand-desc {
                max-width: 100%;
            }
            .article-title {
                font-size: 1.55rem;
            }
            .article-body {
                font-size: 1rem;
            }
            .container-article {
                padding-left: 16px;
                padding-right: 16px;
            }
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-main {
                padding-top: 24px;
                padding-bottom: 48px;
            }
            .cta-section {
                padding: 24px 18px;
            }
        }
        @media (max-width: 520px) {
            .article-title {
                font-size: 1.35rem;
            }
            .article-meta {
                font-size: 0.8rem;
                gap: 10px;
            }
            .article-featured-image {
                border-radius: var(--radius-md);
                margin-bottom: 24px;
            }
            .article-footer-section {
                flex-direction: column;
                align-items: flex-start;
            }
            .header-inner {
                padding: 0 16px;
            }
        }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #1a2030;
            --primary-light: #263248;
            --accent: #4f7dff;
            --accent-hover: #3a5fd4;
            --accent-light: #e8eeff;
            --accent-glow: rgba(79, 125, 255, 0.15);
            --bg: #f7f8fb;
            --bg-alt: #eef1f7;
            --surface: #ffffff;
            --surface-hover: #fafbfd;
            --text: #1a1d26;
            --text-secondary: #4a4f5c;
            --text-muted: #8b8f9a;
            --text-light: #b0b5c0;
            --border: #e2e5ec;
            --border-light: #eef0f5;
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 6px rgba(0,0,0,0.05), 0 1px 3px rgba(0,0,0,0.04);
            --shadow: 0 4px 16px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 28px rgba(0,0,0,0.09), 0 3px 10px rgba(0,0,0,0.05);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.11), 0 6px 18px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.14), 0 8px 24px rgba(0,0,0,0.07);
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --navbar-height: 68px;
            --container-max: 1240px;
        }

        /* ============ Reset & Base ============ */
        *, *::before, *::after {
            box-sizing: border-box;
        }

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button, input, select, textarea {
            font-family: inherit;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-top: 0;
        }

        ul, ol {
            padding-left: 0;
            margin-bottom: 0;
            list-style: none;
        }

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

        @media (max-width: 768px) {
            .container-custom {
                padding-left: 18px;
                padding-right: 18px;
            }
        }

        /* ============ Header & Nav ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            height: var(--navbar-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition), background var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
            background: rgba(255,255,255,0.95);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 24px;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            z-index: 1060;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-xs);
            background: linear-gradient(135deg, var(--accent) 0%, #6b9aff 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .logo-text {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .logo-wrap a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: inherit;
            text-decoration: none;
        }
        .logo-wrap a:hover {
            color: inherit;
        }

        .main-nav-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: inline-block;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 30px;
            text-decoration: none;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.2px;
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: var(--accent);
            background: var(--accent-light);
        }

        .nav-links li a.active {
            color: var(--accent);
            font-weight: 600;
            background: var(--accent-light);
        }

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 1060;
            color: var(--text);
            font-size: 1.4rem;
            line-height: 1;
            transition: color var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .main-nav-wrap {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--surface);
                flex-direction: column;
                align-items: flex-start;
                padding: 90px 28px 40px;
                gap: 20px;
                box-shadow: var(--shadow-xl);
                transition: right var(--transition);
                z-index: 1055;
                border-left: 1px solid var(--border);
            }

            .main-nav-wrap.open {
                right: 0;
            }

            .nav-links {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                width: 100%;
            }

            .nav-links li {
                width: 100%;
            }

            .nav-links li a {
                display: block;
                padding: 12px 16px;
                font-size: 1.05rem;
                border-radius: var(--radius-sm);
                width: 100%;
            }

            .nav-links li a.active::after {
                display: none;
            }

            /* 移动端遮罩 */
            .nav-overlay {
                display: none;
                position: fixed;
                top: 0;
                left: 0;
                width: 100vw;
                height: 100vh;
                background: rgba(0,0,0,0.35);
                z-index: 1050;
                transition: opacity var(--transition);
            }
            .nav-overlay.show {
                display: block;
            }
        }

        /* ============ 内页 Banner ============ */
        .page-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            padding: 72px 0;
            min-height: 280px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,32,48,0.82) 0%, rgba(26,32,48,0.6) 50%, rgba(38,50,72,0.7) 100%);
            z-index: 1;
        }

        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .page-banner .breadcrumb-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-bottom: 16px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.75);
            flex-wrap: wrap;
        }

        .page-banner .breadcrumb-nav a {
            color: rgba(255,255,255,0.85);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .page-banner .breadcrumb-nav a:hover {
            color: #fff;
        }
        .page-banner .breadcrumb-sep {
            color: rgba(255,255,255,0.45);
            font-size: 0.75rem;
        }
        .page-banner .breadcrumb-current {
            color: rgba(255,255,255,0.9);
            font-weight: 500;
        }

        .page-banner .banner-title {
            font-size: 2.6rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            line-height: 1.25;
        }

        .page-banner .banner-subtitle {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.78);
            max-width: 600px;
            margin: 0 auto;
            font-weight: 400;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 50px 0;
                min-height: 220px;
            }
            .page-banner .banner-title {
                font-size: 1.8rem;
            }
            .page-banner .banner-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ============ 板块间距 ============ */
        .section {
            padding: 64px 0;
        }
        .section-sm {
            padding: 44px 0;
        }
        .section-lg {
            padding: 80px 0;
        }

        @media (max-width: 768px) {
            .section { padding: 44px 0; }
            .section-sm { padding: 32px 0; }
            .section-lg { padding: 56px 0; }
        }

        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 750;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: -0.3px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .section-header h2 { font-size: 1.55rem; }
        }

        /* ============ 筛选标签 ============ */
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 36px;
        }

        .filter-tag {
            display: inline-block;
            padding: 10px 22px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 30px;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
            user-select: none;
        }

        .filter-tag:hover {
            color: var(--accent);
            border-color: var(--accent);
            background: var(--accent-light);
            box-shadow: var(--shadow-xs);
        }

        .filter-tag.active-tag {
            color: #fff;
            background: var(--accent);
            border-color: var(--accent);
            font-weight: 600;
            box-shadow: 0 4px 14px var(--accent-glow);
        }

        @media (max-width: 520px) {
            .filter-tags {
                gap: 8px;
                justify-content: flex-start;
                flex-wrap: nowrap;
                overflow-x: auto;
                padding-bottom: 6px;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .filter-tags::-webkit-scrollbar { display: none; }
            .filter-tag {
                padding: 8px 16px;
                font-size: 0.82rem;
                flex-shrink: 0;
            }
        }

        /* ============ 评测文章卡片网格 ============ */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 560px) {
            .articles-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

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

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

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

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

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

        .article-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            display: inline-block;
            padding: 5px 12px;
            font-size: 0.75rem;
            font-weight: 600;
            color: #fff;
            background: var(--accent);
            border-radius: 20px;
            z-index: 2;
            letter-spacing: 0.3px;
        }

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

        .article-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

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

        .article-card .card-summary {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.55;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
            margin-bottom: 14px;
        }

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

        .article-card .card-rating {
            display: flex;
            align-items: center;
            gap: 4px;
            color: #f59e0b;
            font-weight: 600;
            font-size: 0.85rem;
        }

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

        .article-card .card-date {
            color: var(--text-light);
        }

        .article-card .card-link {
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        /* ============ 热门排行区域 ============ */
        .hot-ranking-section {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }

        .hot-ranking-inner {
            display: grid;
            grid-template-columns: 3fr 2fr;
            gap: 40px;
            align-items: start;
        }

        @media (max-width: 900px) {
            .hot-ranking-inner {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hot-ranking-section {
                padding: 24px 18px;
            }
        }

        .ranking-list .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }
        .ranking-list .ranking-item:last-child {
            border-bottom: none;
        }
        .ranking-list .ranking-item:hover {
            background: var(--surface-hover);
            margin: 0 -12px;
            padding-left: 12px;
            padding-right: 12px;
            border-radius: var(--radius-sm);
        }

        .ranking-num {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            color: #fff;
            background: var(--accent);
        }
        .ranking-num.top-1 {
            background: linear-gradient(135deg, #f59e0b, #e67e00);
            font-size: 1.15rem;
            box-shadow: 0 4px 14px rgba(245,158,11,0.35);
        }
        .ranking-num.top-2 {
            background: linear-gradient(135deg, #94a3b8, #64748b);
            box-shadow: 0 4px 12px rgba(100,116,139,0.3);
        }
        .ranking-num.top-3 {
            background: linear-gradient(135deg, #c0845c, #9a5d3a);
            box-shadow: 0 4px 12px rgba(154,93,58,0.3);
        }

        .ranking-info {
            flex: 1;
            min-width: 0;
        }
        .ranking-info .rank-title {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }
        .ranking-item:hover .rank-title {
            color: var(--accent);
        }
        .ranking-info .rank-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
        }
        .ranking-thumb {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            border-radius: var(--radius-xs);
            overflow: hidden;
            background: var(--bg-alt);
        }
        .ranking-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .ranking-link {
            text-decoration: none;
            color: inherit;
            display: flex;
            align-items: center;
            gap: 16px;
            flex: 1;
            min-width: 0;
        }

        /* 侧边标签云 */
        .sidebar-tags h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud .tag-pill {
            display: inline-block;
            padding: 7px 16px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg);
            border-radius: 22px;
            text-decoration: none;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .tag-cloud .tag-pill:hover {
            color: var(--accent);
            background: var(--accent-light);
            border-color: var(--accent);
            box-shadow: var(--shadow-xs);
        }

        /* ============ 评测标准板块 ============ */
        .criteria-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        @media (max-width: 900px) {
            .criteria-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .criteria-grid {
                grid-template-columns: 1fr;
            }
        }

        .criteria-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            box-shadow: var(--shadow-xs);
        }
        .criteria-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: transparent;
        }

        .criteria-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: var(--accent);
            transition: all var(--transition);
        }
        .criteria-card:hover .criteria-icon {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 8px 22px var(--accent-glow);
        }
        .criteria-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }
        .criteria-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 0;
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        @media (max-width: 768px) {
            .faq-section {
                padding: 32px 18px;
                border-radius: var(--radius);
            }
        }
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 18px 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .faq-item:first-child {
            padding-top: 0;
        }
        .faq-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-weight: 650;
            font-size: 1rem;
            color: var(--text);
            user-select: none;
        }
        .faq-question i {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding-top var(--transition-fast);
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.65;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 10px;
        }
        .faq-item:hover .faq-question {
            color: var(--accent);
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-xl);
            padding: 52px 44px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(255,255,255,0.03);
            pointer-events: none;
        }
        .cta-section h3 {
            color: #fff;
            font-size: 1.65rem;
            font-weight: 750;
            margin-bottom: 10px;
            position: relative;
            z-index: 2;
        }
        .cta-section p {
            color: rgba(255,255,255,0.75);
            font-size: 1rem;
            max-width: 500px;
            margin: 0 auto 24px;
            position: relative;
            z-index: 2;
        }
        .btn-cta {
            display: inline-block;
            padding: 14px 36px;
            font-size: 1rem;
            font-weight: 650;
            color: var(--accent);
            background: #ffffff;
            border: none;
            border-radius: 30px;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition);
            position: relative;
            z-index: 2;
            box-shadow: 0 6px 22px rgba(0,0,0,0.18);
            letter-spacing: 0.3px;
        }
        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.25);
            color: var(--accent-hover);
            background: #f8faff;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 36px 22px;
                border-radius: var(--radius-lg);
            }
            .cta-section h3 { font-size: 1.35rem; }
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--primary);
            color: rgba(255,255,255,0.75);
            padding: 52px 0 28px;
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .site-footer a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
        }
        .footer-brand-name {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.15rem;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-brand-desc {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            max-width: 360px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 0.9rem;
            font-weight: 650;
            margin-bottom: 12px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .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);
        }

        /* ============ 通用按钮 ============ */
        .btn-outline-accent {
            display: inline-block;
            padding: 10px 24px;
            font-size: 0.9rem;
            font-weight: 550;
            color: var(--accent);
            background: transparent;
            border: 1.5px solid var(--accent);
            border-radius: 28px;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.2px;
        }
        .btn-outline-accent:hover {
            color: #fff;
            background: var(--accent);
            border-color: var(--accent);
            box-shadow: 0 4px 14px var(--accent-glow);
        }

        /* ============ 加载更多按钮容器 ============ */
        .load-more-wrap {
            text-align: center;
            margin-top: 36px;
        }

        /* ============ 响应式微调 ============ */
        @media (max-width: 520px) {
            .page-banner .banner-title {
                font-size: 1.5rem;
            }
            .ranking-list .ranking-item {
                gap: 10px;
                padding: 10px 0;
            }
            .ranking-thumb {
                width: 42px;
                height: 42px;
            }
            .ranking-num {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }
        }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #1a56db;
            --color-primary-dark: #1e40af;
            --color-primary-light: #dbeafe;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-accent-light: #fef3c7;
            --color-bg: #f8fafc;
            --color-bg-alt: #f1f5f9;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-secondary: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.03);
            --shadow-xl: 0 20px 48px rgba(0,0,0,0.1), 0 4px 12px rgba(0,0,0,0.04);
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
            --max-width: 1200px;
            --nav-height: 68px;
        }
        
        /* ========== 基础 Reset ========== */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        
        /* ========== 容器 ========== */
        .container-custom {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        
        @media (max-width: 768px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        
        /* ========== Header / 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }
        
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }
        
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: -0.5px;
        }
        
        .logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        
        .logo-text span {
            color: var(--color-primary);
        }
        
        .nav-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 32px;
        }
        
        .nav-links li {
            margin: 0;
        }
        
        .nav-links a {
            display: inline-block;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.2px;
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: width var(--transition-base);
        }
        
        .nav-links a:hover {
            color: var(--color-text);
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .nav-links a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        
        .nav-links a.active::after {
            width: 100%;
            height: 2.5px;
        }
        
        /* 移动端菜单按钮 */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--color-text);
            font-size: 1.4rem;
            line-height: 1;
            transition: color var(--transition-fast);
        }
        
        .mobile-menu-toggle:hover {
            color: var(--color-primary);
        }
        
        @media (max-width: 768px) {
            .header-inner {
                padding: 0 16px;
            }
            
            .mobile-menu-toggle {
                display: block;
                z-index: 1050;
            }
            
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                gap: 0;
                padding: 80px 24px 40px;
                box-shadow: var(--shadow-xl);
                transition: right var(--transition-slow);
                z-index: 1045;
                align-items: flex-start;
            }
            
            .nav-links.open {
                right: 0;
            }
            
            .nav-links li {
                width: 100%;
                border-bottom: 1px solid var(--color-border-light);
            }
            
            .nav-links a {
                display: block;
                padding: 14px 0;
                font-size: 1.05rem;
                color: var(--color-text);
            }
            
            .nav-links a::after {
                display: none;
            }
            
            .nav-links a.active {
                color: var(--color-primary);
            }
            
            /* 遮罩 */
            .mobile-overlay {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0,0,0,0.4);
                z-index: 1040;
                opacity: 0;
                transition: opacity var(--transition-base);
            }
            
            .mobile-overlay.show {
                display: block;
                opacity: 1;
            }
        }
        
        /* ========== 面包屑 ========== */
        .breadcrumb-wrapper {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 12px 0;
        }
        
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--color-text-muted);
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .breadcrumb-custom a {
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }
        
        .breadcrumb-custom a:hover {
            color: var(--color-primary);
        }
        
        .breadcrumb-custom .separator {
            color: var(--color-text-muted);
            font-size: 0.7rem;
        }
        
        .breadcrumb-custom .current {
            color: var(--color-text);
            font-weight: 500;
        }
        
        /* ========== 页面 Banner ========== */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 40%, #1a4b8c 100%);
            padding: 56px 0;
            overflow: hidden;
        }
        
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.18;
            pointer-events: none;
        }
        
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--color-bg), transparent);
            pointer-events: none;
        }
        
        .banner-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        
        .banner-badge {
            display: inline-block;
            background: rgba(255,255,255,0.12);
            color: #e2e8f0;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.8px;
            text-transform: uppercase;
            margin-bottom: 16px;
            border: 1px solid rgba(255,255,255,0.15);
        }
        
        .banner-content h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #ffffff;
            margin: 0 0 12px;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }
        
        .banner-content p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.75);
            margin: 0;
            line-height: 1.6;
        }
        
        @media (max-width: 768px) {
            .page-banner {
                padding: 40px 0;
            }
            .banner-content h1 {
                font-size: 1.7rem;
            }
            .banner-content p {
                font-size: 0.95rem;
            }
        }
        
        /* ========== 板块标题 ========== */
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--color-primary);
            text-transform: uppercase;
            letter-spacing: 1.2px;
            margin-bottom: 8px;
        }
        
        .section-header h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 8px;
            letter-spacing: -0.3px;
        }
        
        .section-header p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            margin: 0;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        
        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 1.4rem;
            }
        }
        
        /* ========== 标签筛选区 ========== */
        .filter-tags-area {
            padding: 32px 0 8px;
        }
        
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        
        .filter-tag {
            display: inline-block;
            padding: 8px 18px;
            font-size: 0.875rem;
            font-weight: 500;
            border-radius: 24px;
            border: 1.5px solid var(--color-border);
            background: var(--color-surface);
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }
        
        .filter-tag:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        
        .filter-tag.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 600;
        }
        
        .filter-tag .count {
            display: inline-block;
            background: rgba(0,0,0,0.06);
            padding: 1px 7px;
            border-radius: 10px;
            font-size: 0.75rem;
            margin-left: 4px;
            font-weight: 600;
        }
        
        .filter-tag.active .count {
            background: rgba(255,255,255,0.25);
        }
        
        /* ========== 文章卡片网格 ========== */
        .articles-section {
            padding: 40px 0 56px;
        }
        
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        
        @media (max-width: 992px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 600px) {
            .articles-grid {
                grid-template-columns: 1fr;
            }
        }
        
        .article-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            height: 100%;
            box-shadow: var(--shadow-sm);
        }
        
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border);
        }
        
        .article-card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--color-bg-alt);
        }
        
        .article-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        
        .article-card:hover .article-card-img-wrap img {
            transform: scale(1.04);
        }
        
        .article-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-primary);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            z-index: 1;
            letter-spacing: 0.3px;
        }
        
        .article-card-body {
            padding: 18px 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        
        .article-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 8px;
            line-height: 1.45;
            color: var(--color-text);
            letter-spacing: -0.2px;
        }
        
        .article-card-body h3 a {
            color: inherit;
            transition: color var(--transition-fast);
        }
        
        .article-card-body h3 a:hover {
            color: var(--color-primary);
        }
        
        .article-card-excerpt {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0 0 14px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .article-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.78rem;
            color: var(--color-text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--color-border-light);
        }
        
        .article-card-meta .price-range {
            font-weight: 600;
            color: var(--color-accent-dark);
            background: var(--color-accent-light);
            padding: 2px 8px;
            border-radius: 10px;
            font-size: 0.72rem;
        }
        
        /* 空结果 */
        .no-results {
            text-align: center;
            padding: 60px 20px;
            color: var(--color-text-secondary);
        }
        
        .no-results i {
            font-size: 3rem;
            color: var(--color-text-muted);
            display: block;
            margin-bottom: 12px;
        }
        
        .no-results p {
            font-size: 1rem;
            margin: 0;
        }
        
        .no-results .reset-link {
            display: inline-block;
            margin-top: 12px;
            color: var(--color-primary);
            font-weight: 600;
        }
        
        /* ========== 购机流程步骤区 ========== */
        .steps-section {
            padding: 56px 0;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }
        
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            counter-reset: step;
        }
        
        @media (max-width: 992px) {
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 520px) {
            .steps-list {
                grid-template-columns: 1fr;
            }
        }
        
        .step-item {
            text-align: center;
            position: relative;
            padding: 28px 16px 20px;
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        
        .step-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }
        
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 14px;
            box-shadow: 0 4px 14px rgba(26,86,219,0.3);
        }
        
        .step-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 6px;
        }
        
        .step-item p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.5;
        }
        
        /* ========== 价位推荐对比区 ========== */
        .price-comparison-section {
            padding: 56px 0;
        }
        
        .price-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        
        .price-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 640px;
            background: var(--color-surface);
            font-size: 0.9rem;
        }
        
        .price-table thead th {
            background: var(--color-bg-alt);
            font-weight: 700;
            color: var(--color-text);
            padding: 14px 16px;
            text-align: left;
            border-bottom: 2px solid var(--color-border);
            white-space: nowrap;
            font-size: 0.85rem;
            letter-spacing: 0.3px;
        }
        
        .price-table tbody td {
            padding: 13px 16px;
            border-bottom: 1px solid var(--color-border-light);
            color: var(--color-text-secondary);
            vertical-align: middle;
        }
        
        .price-table tbody tr:last-child td {
            border-bottom: none;
        }
        
        .price-table tbody tr:hover {
            background: var(--color-bg);
        }
        
        .price-table .tier-label {
            font-weight: 700;
            color: var(--color-text);
            white-space: nowrap;
        }
        
        .price-table .tier-icon {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            margin-right: 6px;
        }
        
        .tier-icon.budget { background: #10b981; }
        .tier-icon.mid { background: #3b82f6; }
        .tier-icon.premium { background: #8b5cf6; }
        .tier-icon.flagship { background: #ef4444; }
        
        .badge-recommend {
            display: inline-block;
            background: #dbeafe;
            color: #1a56db;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 10px;
        }
        
        /* ========== FAQ 区 ========== */
        .faq-section {
            padding: 56px 0;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border-light);
        }
        
        .faq-accordion {
            max-width: 760px;
            margin: 0 auto;
        }
        
        .faq-accordion .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            background: var(--color-bg);
            transition: all var(--transition-fast);
        }
        
        .faq-accordion .accordion-item:hover {
            border-color: var(--color-border);
        }
        
        .faq-accordion .accordion-button {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text);
            background: transparent;
            box-shadow: none !important;
            padding: 16px 20px;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-fast);
            letter-spacing: 0.1px;
        }
        
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background: var(--color-primary-light);
            border-bottom: 1px solid var(--color-border-light);
        }
        
        .faq-accordion .accordion-button::after {
            filter: none;
            opacity: 0.5;
            transition: all var(--transition-base);
        }
        
        .faq-accordion .accordion-button:not(.collapsed)::after {
            opacity: 1;
            filter: invert(18%) sepia(88%) saturate(3168%) hue-rotate(218deg) brightness(92%) contrast(91%);
        }
        
        .faq-accordion .accordion-body {
            padding: 18px 20px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            background: var(--color-surface);
        }
        
        /* ========== CTA 区 ========== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
            position: relative;
            overflow: hidden;
        }
        
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
        }
        
        .cta-content h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 10px;
            letter-spacing: -0.3px;
        }
        
        .cta-content p {
            font-size: 1rem;
            color: rgba(255,255,255,0.7);
            margin: 0 0 28px;
        }
        
        .btn-cta-primary {
            display: inline-block;
            background: var(--color-accent);
            color: #1e293b;
            font-weight: 700;
            padding: 12px 32px;
            border-radius: 28px;
            font-size: 1rem;
            transition: all var(--transition-base);
            text-decoration: none;
            letter-spacing: 0.2px;
        }
        
        .btn-cta-primary:hover {
            background: var(--color-accent-dark);
            color: #1e293b;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.35);
        }
        
        /* ========== Footer ========== */
        .site-footer {
            background: #0f172a;
            color: rgba(255,255,255,0.7);
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }
        
        .footer-brand-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        
        .footer-brand-desc {
            font-size: 0.85rem;
            line-height: 1.6;
            margin: 0;
            max-width: 340px;
        }
        
        .footer-col h5 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            letter-spacing: 0.4px;
            text-transform: uppercase;
        }
        
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        
        .footer-col ul li {
            margin-bottom: 7px;
        }
        
        .footer-col ul li a {
            color: rgba(255,255,255,0.55);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        
        .footer-col ul li a:hover {
            color: #fff;
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 18px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.35);
        }
        
        /* ========== 通用辅助类 ========== */
        .section-padding {
            padding: 56px 0;
        }
        
        @media (max-width: 768px) {
            .section-padding {
                padding: 40px 0;
            }
        }
        
        /* ========== 搜索结果计数 ========== */
        .results-count {
            text-align: center;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
        }
        
        .results-count strong {
            color: var(--color-primary);
            font-weight: 700;
        }