/* roulang page: index */
:root {
            --color-primary: #1a2d47;
            --color-primary-light: #243b5e;
            --color-accent: #c8963e;
            --color-accent-light: #d4a85a;
            --color-accent-dark: #a67a2e;
            --color-bg: #f9fafb;
            --color-surface: #ffffff;
            --color-surface-alt: #f1f5f9;
            --color-text: #1a202c;
            --color-text-secondary: #4a5568;
            --color-text-muted: #718096;
            --color-border: #e2e8f0;
            --color-border-light: #edf2f7;
            --color-success: #38a169;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.09), 0 4px 10px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.11), 0 8px 18px rgba(0, 0, 0, 0.05);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }
        .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 28px;
            height: 100%;
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 0 18px;
            }
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-link:hover {
            color: var(--color-primary-light);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: var(--color-surface-alt);
        }
        .nav-links a.active {
            color: var(--color-accent-dark);
            background: #fef9f0;
            font-weight: 600;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--color-accent);
            color: #fff !important;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-cta:hover {
            background: var(--color-accent-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
            color: #fff !important;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            color: var(--color-text);
            font-size: 1.5rem;
            line-height: 1;
        }
        .mobile-menu-toggle:hover {
            background: var(--color-surface-alt);
        }
        @media (max-width: 860px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav-right .nav-cta {
                display: none;
            }
            .nav-right .nav-cta.mobile-visible {
                display: inline-flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
        }
        @media (min-width: 861px) {
            .nav-right .nav-cta.mobile-visible {
                display: none;
            }
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            display: flex;
            min-height: 560px;
            background: var(--color-surface);
            overflow: hidden;
        }
        @media (max-width: 768px) {
            .hero-section {
                flex-direction: column;
                min-height: auto;
            }
        }
        .hero-content {
            flex: 1 1 55%;
            display: flex;
            align-items: center;
            padding: 60px 40px 60px 0;
            z-index: 2;
        }
        @media (max-width: 768px) {
            .hero-content {
                flex: 1 1 auto;
                padding: 40px 18px;
                order: 2;
            }
        }
        .hero-content .container {
            max-width: 620px;
            margin: 0;
            padding: 0;
        }
        @media (max-width: 768px) {
            .hero-content .container {
                max-width: 100%;
                margin: 0 auto;
                padding: 0;
            }
        }
        .hero-visual {
            flex: 1 1 45%;
            position: relative;
            min-height: 400px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            z-index: 1;
        }
        @media (max-width: 768px) {
            .hero-visual {
                flex: 1 1 auto;
                min-height: 260px;
                order: 1;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                overflow: hidden;
                margin: 0 12px;
            }
        }
        .hero-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 45, 71, 0.25) 0%, rgba(26, 45, 71, 0.05) 60%);
            pointer-events: none;
        }
        .hero-badge {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            background: #fef9f0;
            color: var(--color-accent-dark);
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--color-primary);
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 1.8rem;
            }
        }
        .hero-subtitle {
            font-size: 1.12rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 28px;
            max-width: 500px;
        }
        @media (max-width: 768px) {
            .hero-subtitle {
                font-size: 1rem;
                max-width: 100%;
            }
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-border);
        }
        .btn-outline:hover {
            border-color: var(--color-primary);
            background: var(--color-surface-alt);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .btn:focus-visible {
            outline: 3px solid var(--color-accent-light);
            outline-offset: 3px;
        }

        /* Section Common */
        .section {
            padding: 72px 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 44px 0;
            }
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        @media (max-width: 768px) {
            .section-header {
                margin-bottom: 32px;
            }
        }
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent-dark);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
        }
        .section-desc {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* Stats Section */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        .stat-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-normal);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        @media (max-width: 768px) {
            .stat-number {
                font-size: 1.8rem;
            }
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* Cards Grid */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .cards-grid {
                grid-template-columns: 1fr;
            }
        }
        .feature-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .feature-card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: #fef9f0;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            font-size: 1.4rem;
            color: var(--color-accent);
            flex-shrink: 0;
        }
        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.93rem;
            color: var(--color-text-muted);
            line-height: 1.65;
        }

        /* Mosaic Section */
        .mosaic-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            grid-template-rows: auto auto;
            gap: 16px;
        }
        @media (max-width: 768px) {
            .mosaic-grid {
                grid-template-columns: 1fr 1fr;
                grid-template-rows: auto;
            }
        }
        @media (max-width: 500px) {
            .mosaic-grid {
                grid-template-columns: 1fr;
            }
        }
        .mosaic-item {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            cursor: pointer;
            transition: all var(--transition-normal);
            aspect-ratio: 4/3;
            min-height: 200px;
        }
        .mosaic-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        .mosaic-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .mosaic-item:hover img {
            transform: scale(1.05);
        }
        .mosaic-item-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px 20px;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
            color: #fff;
        }
        .mosaic-item-overlay h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .mosaic-item-overlay span {
            font-size: 0.82rem;
            opacity: 0.85;
        }
        .mosaic-item:nth-child(1) {
            grid-row: span 2;
            aspect-ratio: auto;
        }
        @media (max-width: 768px) {
            .mosaic-item:nth-child(1) {
                grid-row: span 1;
                aspect-ratio: 4/3;
            }
        }

        /* CMS List Section */
        .cms-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        @media (max-width: 600px) {
            .cms-list {
                grid-template-columns: 1fr;
            }
        }
        .cms-list-item {
            display: flex;
            gap: 16px;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 20px;
            transition: all var(--transition-normal);
            align-items: flex-start;
        }
        .cms-list-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: transparent;
        }
        .cms-list-item-thumb {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-md);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-surface-alt);
        }
        .cms-list-item-body {
            flex: 1;
            min-width: 0;
        }
        .cms-list-item-body h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .cms-list-item-body p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }
        .cms-list-item-meta {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }
        .cms-list-item-meta .cms-category-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 12px;
            background: #fef9f0;
            color: var(--color-accent-dark);
            font-weight: 600;
            margin-right: 8px;
            font-size: 0.75rem;
        }
        .cms-empty {
            text-align: center;
            padding: 40px;
            color: var(--color-text-muted);
            font-size: 1rem;
            grid-column: 1 / -1;
        }

        /* Compare Section */
        .compare-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }
        .compare-table th,
        .compare-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--color-border-light);
            font-size: 0.93rem;
        }
        .compare-table th {
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
        }
        .compare-table th:first-child {
            border-radius: var(--radius-sm) 0 0 0;
        }
        .compare-table th:last-child {
            border-radius: 0 var(--radius-sm) 0 0;
        }
        .compare-table tr:hover td {
            background: #fefcf7;
        }
        .compare-table .check {
            color: var(--color-success);
            font-weight: 700;
            font-size: 1.1rem;
        }
        .compare-table .dash {
            color: var(--color-text-muted);
        }

        /* Testimonials */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        @media (max-width: 1024px) {
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
        }
        .testimonial-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: all var(--transition-normal);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: transparent;
        }
        .testimonial-stars {
            color: var(--color-accent);
            font-size: 1rem;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }
        .testimonial-text {
            font-size: 0.93rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
        }
        .testimonial-author {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
        }
        .testimonial-role {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            background: var(--color-surface);
            transition: all var(--transition-fast);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: var(--color-surface-alt);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--color-accent-light);
            outline-offset: -2px;
            border-radius: var(--radius-md);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-surface-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            transition: transform var(--transition-fast);
            color: var(--color-text-muted);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: #fef9f0;
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
            font-size: 0.93rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            border-radius: var(--radius-xl);
            margin: 0 28px;
            padding: 56px 40px;
        }
        @media (max-width: 768px) {
            .cta-section {
                margin: 0 12px;
                padding: 40px 20px;
                border-radius: var(--radius-lg);
            }
        }
        .cta-section .section-title {
            color: #fff;
        }
        .cta-section .section-desc {
            color: rgba(255, 255, 255, 0.78);
        }
        .btn-cta-light {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            background: #fff;
            color: var(--color-primary);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            margin-top: 8px;
        }
        .btn-cta-light:hover {
            background: #fef9f0;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 28px;
            margin-top: 0;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: space-between;
        }
        .footer-brand {
            flex: 1 1 280px;
        }
        .footer-brand .logo-link {
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.6;
            margin-top: 8px;
        }
        .footer-links {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
        }
        @media (max-width: 600px) {
            .footer-links {
                gap: 24px;
            }
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 28px;
            margin-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
        }

        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .cards-grid,
            .testimonials-grid {
                gap: 14px;
            }
        }

/* roulang page: article */
:root {
            --primary: #1a365d;
            --primary-light: #2c5282;
            --primary-lighter: #3b6fa0;
            --accent: #d4701a;
            --accent-light: #f08c3b;
            --bg: #f5f7fa;
            --surface: #ffffff;
            --surface-alt: #edf2f7;
            --text: #1a202c;
            --text-strong: #0f1419;
            --text-muted: #5f6b7a;
            --text-light: #8b95a5;
            --border: #e2e8f0;
            --border-light: #edf2f7;
            --radius-xs: 6px;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.11);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.14);
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --max-width-article: 800px;
            --nav-height: 64px;
        }

        *,
        *::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: 16px;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            color: var(--text-strong);
            line-height: 1.35;
        }

        p {
            margin: 0 0 1em;
        }

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

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--nav-height);
            box-shadow: var(--shadow-xs);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--primary);
            text-decoration: none;
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: opacity var(--transition-fast);
        }

        .logo-link:hover {
            color: var(--primary);
            opacity: 0.84;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-xs);
            font-size: 1rem;
            font-weight: 800;
            flex-shrink: 0;
        }

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

        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

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

        .nav-links a.active {
            color: var(--primary);
            background: #e8edf5;
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: var(--accent);
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }

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

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 8px;
            border-radius: var(--radius-xs);
            transition: background var(--transition-fast);
        }

        .mobile-toggle:hover {
            background: var(--surface-alt);
        }

        /* ========== ARTICLE BANNER ========== */
        .article-banner {
            position: relative;
            background: var(--primary) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 60px 0 48px;
            min-height: 260px;
            display: flex;
            align-items: flex-end;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 54, 93, 0.78) 0%, rgba(26, 54, 93, 0.9) 100%);
            z-index: 1;
        }

        .article-banner--not-found {
            min-height: 180px;
            padding: 48px 0 36px;
        }

        .article-banner .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.9);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: rgba(255, 255, 255, 0.7);
            pointer-events: none;
        }

        .article-banner-title {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin: 0 0 12px;
            letter-spacing: 0.01em;
            text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
        }

        .article-banner-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.85);
        }

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

        .article-banner-meta .meta-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(255, 255, 255, 0.18);
            border-radius: 20px;
            font-size: 0.82rem;
            color: #fff;
            font-weight: 500;
            backdrop-filter: blur(4px);
        }

        /* ========== MAIN CONTENT ========== */
        .article-main {
            flex: 1;
            padding: 40px 0 60px;
        }

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

        .article-content-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }

        /* CMS 正文排版 */
        .article-body {
            font-size: 1.06rem;
            line-height: 1.85;
            color: var(--text);
            word-break: break-word;
        }

        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
            color: var(--text-strong);
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 28px 0 12px;
            color: var(--text-strong);
        }

        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 22px 0 10px;
        }

        .article-body p {
            margin: 0 0 16px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 20px;
            padding-left: 24px;
        }

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

        .article-body blockquote {
            margin: 24px 0;
            padding: 16px 20px;
            border-left: 4px solid var(--primary-light);
            background: var(--surface-alt);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }

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

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.95rem;
            overflow-x: auto;
            display: block;
        }

        .article-body table th,
        .article-body table td {
            padding: 10px 14px;
            border: 1px solid var(--border);
            text-align: left;
        }

        .article-body table th {
            background: var(--surface-alt);
            font-weight: 600;
            color: var(--text-strong);
        }

        .article-body code {
            background: #f1f5f9;
            padding: 2px 7px;
            border-radius: 4px;
            font-size: 0.9em;
            color: #c7254e;
        }

        .article-body pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 20px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 20px 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-body pre code {
            background: none;
            color: inherit;
            padding: 0;
            font-size: inherit;
        }

        .article-body a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-thickness: 1px;
        }

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

        /* 未找到文章 */
        .not-found-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            text-align: center;
        }

        .not-found-icon {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }

        .not-found-card h2 {
            font-size: 1.4rem;
            margin-bottom: 10px;
        }

        .not-found-card p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            transition: all var(--transition-fast);
        }

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

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

        .sidebar-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }

        .sidebar-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
            color: var(--text-strong);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h3 i {
            color: var(--accent);
            font-size: 0.9rem;
        }

        .sidebar-post-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition-fast);
            border-radius: var(--radius-xs);
        }

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

        .sidebar-post-item:hover {
            background: var(--surface-alt);
            padding-left: 8px;
            margin-left: -8px;
            padding-right: 8px;
            margin-right: -8px;
            border-radius: var(--radius-xs);
        }

        .sidebar-post-thumb {
            width: 72px;
            height: 52px;
            border-radius: var(--radius-xs);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--surface-alt);
        }

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

        .sidebar-post-info a {
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .sidebar-post-info a:hover {
            color: var(--primary-light);
        }

        .sidebar-post-date {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: 4px;
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .sidebar-tag {
            display: inline-block;
            padding: 5px 12px;
            background: var(--surface-alt);
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--text-muted);
            text-decoration: none;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .sidebar-tag:hover {
            background: #e0e8f2;
            color: var(--primary);
            border-color: var(--border);
        }

        /* ========== RELATED POSTS SECTION ========== */
        .related-section {
            padding: 0 0 60px;
        }

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

        .related-heading {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--text-strong);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-heading::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border);
            margin-left: 8px;
        }

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

        .related-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
        }

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

        .related-card-img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            background: var(--surface-alt);
        }

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

        .related-card-title {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-strong);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-date {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: auto;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--primary);
            padding: 48px 0;
            margin-top: 0;
        }

        .cta-inner {
            text-align: center;
            color: #fff;
        }

        .cta-inner h2 {
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            font-size: 1rem;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
        }

        .cta-btn:hover {
            background: var(--accent-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #101b2b;
            color: #c4cdd8;
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 24px;
        }

        .footer-brand .logo-link {
            color: #fff;
            font-size: 1.15rem;
            margin-bottom: 12px;
            display: inline-flex;
        }

        .footer-brand .logo-link:hover {
            color: #ddd;
            opacity: 1;
        }

        .footer-brand .logo-link .logo-icon {
            background: var(--accent);
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: #94a3b8;
            margin: 8px 0 0;
            line-height: 1.6;
            max-width: 340px;
        }

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

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .footer-col a {
            display: block;
            color: #94a3b8;
            font-size: 0.88rem;
            padding: 5px 0;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            text-align: center;
            font-size: 0.82rem;
            color: #6b7d92;
        }

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

            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }

            .sidebar-card {
                flex: 1;
                min-width: 260px;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .article-banner-title {
                font-size: 1.6rem;
            }

            .article-content-card {
                padding: 28px 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                flex-direction: column;
                background: var(--surface);
                border-bottom: 1px solid var(--border);
                padding: 12px 20px;
                gap: 2px;
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }

            .nav-links.open {
                display: flex;
            }

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

            .nav-cta {
                display: none;
            }

            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .article-banner {
                padding: 40px 0 32px;
                min-height: 200px;
            }

            .article-banner-title {
                font-size: 1.35rem;
            }

            .article-banner-meta {
                font-size: 0.8rem;
                gap: 10px;
            }

            .article-content-card {
                padding: 20px 16px;
                border-radius: var(--radius);
            }

            .article-body {
                font-size: 1rem;
                line-height: 1.75;
            }

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

            .article-body h3 {
                font-size: 1.1rem;
            }

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

            .related-card-img {
                height: 180px;
            }

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-links {
                grid-template-columns: 1fr 1fr;
            }

            .cta-inner h2 {
                font-size: 1.3rem;
            }

            .article-sidebar {
                flex-direction: column;
            }

            .sidebar-card {
                min-width: auto;
            }

            .not-found-card {
                padding: 32px 20px;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .article-banner-title {
                font-size: 1.2rem;
            }

            .article-banner-meta {
                font-size: 0.76rem;
                gap: 6px;
            }

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

            .article-body {
                font-size: 0.95rem;
            }

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

            .related-card-img {
                height: 160px;
            }

            .breadcrumb {
                font-size: 0.74rem;
                gap: 4px;
            }

            .article-banner {
                min-height: 160px;
                padding: 32px 0 24px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a344c;
            --primary-light: #234b6e;
            --primary-dark: #0f2233;
            --accent: #c8963e;
            --accent-light: #dba855;
            --accent-dark: #a87a2e;
            --bg: #f7f5f2;
            --bg-white: #ffffff;
            --bg-light: #f0ece6;
            --bg-dark: #1a344c;
            --text: #2c2c2c;
            --text-light: #5a5a5a;
            --text-muted: #8a8a8a;
            --text-on-dark: #e8e4dd;
            --border: #e0dcd4;
            --border-light: #ede9e2;
            --shadow-sm: 0 1px 3px rgba(15, 34, 51, 0.06);
            --shadow: 0 4px 16px rgba(15, 34, 51, 0.08);
            --shadow-md: 0 8px 30px rgba(15, 34, 51, 0.10);
            --shadow-lg: 0 16px 48px rgba(15, 34, 51, 0.12);
            --shadow-xl: 0 24px 64px rgba(15, 34, 51, 0.14);
            --radius-xs: 4px;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1220px;
            margin: 0 auto;
            padding: 0 28px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 62px;
            gap: 24px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: opacity var(--transition);
        }

        .logo-link:hover {
            opacity: 0.82;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

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

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: rgba(26, 52, 76, 0.05);
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(26, 52, 76, 0.07);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 2.5px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: var(--accent);
            white-space: nowrap;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
        }

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

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            font-size: 1.4rem;
            color: var(--primary);
            line-height: 1;
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 56px;
            }
            .nav-links {
                position: fixed;
                top: 56px;
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(14px);
                -webkit-backdrop-filter: blur(14px);
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-slow);
                z-index: 999;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-xs);
                font-size: 1rem;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .header-cta-desktop {
                display: none;
            }
        }

        @media (min-width: 769px) {
            .header-cta-desktop {
                display: inline-flex;
            }
        }

        /* ========== HERO - 分屏布局 ========== */
        .hero-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            min-height: 540px;
            background: var(--bg-white);
            overflow: hidden;
            border-bottom: 1px solid var(--border-light);
        }

        .hero-split-content {
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 60px 48px 60px 56px;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-dark);
            background: rgba(200, 150, 62, 0.1);
            margin-bottom: 20px;
            width: fit-content;
            letter-spacing: 0.03em;
        }

        .hero-badge i {
            font-size: 0.7rem;
        }

        .hero-split-content h1 {
            font-size: 2.7rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }

        .hero-split-content h1 .accent-word {
            color: var(--accent);
            position: relative;
        }

        .hero-split-content .hero-desc {
            font-size: 1.08rem;
            color: var(--text-light);
            line-height: 1.75;
            margin-bottom: 30px;
            max-width: 460px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

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

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

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

        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(26, 52, 76, 0.03);
            transform: translateY(-2px);
        }

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

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

        .hero-split-visual {
            position: relative;
            background: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .hero-split-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            opacity: 0.85;
            mix-blend-mode: luminosity;
        }

        .hero-split-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 52, 76, 0.55) 0%, rgba(26, 52, 76, 0.25) 100%);
            pointer-events: none;
        }

        .hero-stats-overlay {
            position: absolute;
            bottom: 40px;
            left: 40px;
            right: 40px;
            display: flex;
            gap: 20px;
            z-index: 3;
            flex-wrap: wrap;
        }

        .hero-stat-chip {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            text-align: center;
            min-width: 80px;
            box-shadow: var(--shadow-sm);
        }

        .hero-stat-chip .stat-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
        }

        .hero-stat-chip .stat-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 2px;
            letter-spacing: 0.04em;
        }

        @media (max-width: 1024px) {
            .hero-split {
                grid-template-columns: 1fr;
                min-height: auto;
            }
            .hero-split-content {
                padding: 44px 28px;
                order: 1;
            }
            .hero-split-content h1 {
                font-size: 2rem;
            }
            .hero-split-visual {
                height: 280px;
                order: 0;
            }
            .hero-stats-overlay {
                bottom: 16px;
                left: 16px;
                right: 16px;
                gap: 10px;
            }
            .hero-stat-chip {
                padding: 10px 14px;
                min-width: 60px;
            }
            .hero-stat-chip .stat-num {
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .hero-split-content {
                padding: 32px 18px;
            }
            .hero-split-content h1 {
                font-size: 1.6rem;
            }
            .hero-split-content .hero-desc {
                font-size: 0.95rem;
            }
            .hero-split-visual {
                height: 200px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

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

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

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 1.02rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ========== SCORE BARS SECTION ========== */
        .score-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .score-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 30px 26px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

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

        .score-card-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
        }

        .score-card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .score-card-icon.blue {
            background: rgba(26, 52, 76, 0.1);
            color: var(--primary);
        }
        .score-card-icon.gold {
            background: rgba(200, 150, 62, 0.12);
            color: var(--accent);
        }
        .score-card-icon.teal {
            background: rgba(30, 130, 120, 0.1);
            color: #1e8278;
        }

        .score-card-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--primary);
        }

        .score-bar-group {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .score-bar-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .score-bar-label-row {
            display: flex;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-light);
        }

        .score-bar-label-row .score-val {
            font-weight: 700;
            color: var(--primary);
        }

        .score-bar-track {
            height: 8px;
            background: var(--bg-light);
            border-radius: 4px;
            overflow: hidden;
        }

        .score-bar-fill {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
            transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .score-bar-fill.w90 {
            width: 90%;
        }
        .score-bar-fill.w85 {
            width: 85%;
        }
        .score-bar-fill.w80 {
            width: 80%;
        }
        .score-bar-fill.w75 {
            width: 75%;
        }
        .score-bar-fill.w88 {
            width: 88%;
        }
        .score-bar-fill.w92 {
            width: 92%;
        }
        .score-bar-fill.w82 {
            width: 82%;
        }
        .score-bar-fill.w78 {
            width: 78%;
        }
        .score-bar-fill.w95 {
            width: 95%;
        }

        @media (max-width: 1024px) {
            .score-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .score-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== SCENARIO CARDS ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: pointer;
        }

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

        .scenario-card-img {
            height: 160px;
            overflow: hidden;
            position: relative;
        }

        .scenario-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-slow);
        }

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

        .scenario-card-img .scenario-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(26, 52, 76, 0.5) 0%, transparent 60%);
            pointer-events: none;
        }

        .scenario-card-body {
            padding: 18px 16px;
        }

        .scenario-card-body h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .scenario-card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        @media (max-width: 1024px) {
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .scenario-card-img {
                height: 180px;
            }
        }

        /* ========== METHODOLOGY / STEPS ========== */
        .steps-flow {
            display: flex;
            gap: 0;
            align-items: stretch;
            position: relative;
        }

        .step-node {
            flex: 1;
            text-align: center;
            padding: 30px 20px;
            position: relative;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

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

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }

        .step-node h4 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .step-node p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        .step-connector {
            display: flex;
            align-items: center;
            flex-shrink: 0;
            padding: 0 6px;
        }

        .step-connector-line {
            width: 36px;
            height: 2px;
            background: var(--border);
            border-radius: 1px;
            position: relative;
        }

        .step-connector-line::after {
            content: '';
            position: absolute;
            right: -4px;
            top: 50%;
            transform: translateY(-50%);
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
        }

        @media (max-width: 900px) {
            .steps-flow {
                flex-direction: column;
                gap: 16px;
            }
            .step-connector {
                justify-content: center;
                padding: 0;
            }
            .step-connector-line {
                width: 2px;
                height: 28px;
            }
            .step-connector-line::after {
                right: 50%;
                top: auto;
                bottom: -4px;
                transform: translateX(50%);
            }
        }

        /* ========== INSIGHT HIGHLIGHTS ========== */
        .insight-highlight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .insight-highlight-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .insight-highlight-card .card-img-wrap {
            height: 180px;
            overflow: hidden;
        }

        .insight-highlight-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-slow);
        }

        .insight-highlight-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

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

        .insight-highlight-card .card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            color: var(--accent-dark);
            background: rgba(200, 150, 62, 0.1);
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: 10px;
            width: fit-content;
        }

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

        .insight-highlight-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
        }

        .insight-highlight-card .card-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 12px;
            display: flex;
            gap: 12px;
        }

        @media (max-width: 1024px) {
            .insight-highlight-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .insight-highlight-grid {
                grid-template-columns: 1fr;
            }
            .insight-highlight-card .card-img-wrap {
                height: 200px;
            }
        }

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

        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition);
        }

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

        .testimonial-card .quote-icon {
            font-size: 2rem;
            color: rgba(200, 150, 62, 0.3);
            line-height: 1;
            margin-bottom: 10px;
        }

        .testimonial-card .quote-text {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-card .quote-author {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--primary);
        }

        .testimonial-card .quote-role {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        @media (max-width: 1024px) {
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
        }

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

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

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

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            background: none;
            border: none;
            cursor: pointer;
            font-weight: 700;
            font-size: 0.98rem;
            color: var(--primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: color var(--transition);
        }

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

        .faq-question .faq-icon {
            font-size: 0.8rem;
            transition: transform var(--transition);
            flex-shrink: 0;
            color: var(--text-muted);
        }

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

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

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--primary-dark);
            color: var(--text-on-dark);
            text-align: center;
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(200, 150, 62, 0.12);
            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-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.85;
            margin-bottom: 28px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

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

        /* ========== FOOTER ========== */
        .site-footer {
            background: #15283a;
            color: #c5c0b8;
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .logo-link {
            color: #e8e4dd;
            margin-bottom: 10px;
            font-size: 1.15rem;
        }
        .footer-brand .logo-link .logo-icon {
            background: var(--accent);
            color: #fff;
        }
        .footer-brand p {
            color: #a09a90;
            line-height: 1.6;
            margin-top: 8px;
            max-width: 340px;
            font-size: 0.85rem;
        }

        .footer-links {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .footer-col h4 {
            color: #e8e4dd;
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .footer-col a {
            display: block;
            color: #a09a90;
            padding: 4px 0;
            font-size: 0.85rem;
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: #e8e4dd;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 18px;
            text-align: center;
            font-size: 0.8rem;
            color: #8a857c;
        }

        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-links {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 480px) {
            .footer-links {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ========== ANIMATIONS ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-on-scroll {
            animation: fadeInUp 0.7s ease forwards;
            opacity: 0;
        }

        .animate-on-scroll:nth-child(1) {
            animation-delay: 0.05s;
        }
        .animate-on-scroll:nth-child(2) {
            animation-delay: 0.15s;
        }
        .animate-on-scroll:nth-child(3) {
            animation-delay: 0.25s;
        }
        .animate-on-scroll:nth-child(4) {
            animation-delay: 0.35s;
        }

/* roulang page: category2 */
:root {
            --primary: #1a365d;
            --primary-dark: #0f2340;
            --primary-light: #2c5282;
            --primary-lighter: #3b6da8;
            --accent: #d69e2e;
            --accent-light: #e8b94d;
            --accent-dark: #b87d1e;
            --bg: #f6f7fa;
            --bg-white: #ffffff;
            --bg-light: #eef1f5;
            --bg-dark: #111c2e;
            --text: #1a202c;
            --text-secondary: #4a5568;
            --text-muted: #7b8da0;
            --text-light: #a0b0c0;
            --border: #dde3ea;
            --border-light: #edf1f5;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 6px rgba(0,0,0,0.06);
            --shadow: 0 4px 18px rgba(0,0,0,0.09);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.13);
            --shadow-xl: 0 14px 44px rgba(0,0,0,0.16);
            --radius-xs: 4px;
            --radius-sm: 7px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --radius-full: 50px;
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --nav-height: 64px;
            --container-max: 1200px;
            --container-padding: 24px;
        }

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

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

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

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

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

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

        ul, ol {
            list-style: none;
        }

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

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

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.94);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            transition: box-shadow var(--transition), background var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow);
            background: rgba(255,255,255,0.98);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 28px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 9px;
            font-weight: 700;
            font-size: 1.22rem;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }

        .logo-link:hover {
            color: var(--primary-light);
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

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

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

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: none;
        }

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

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--text);
            font-size: 1.4rem;
            line-height: 1;
            flex-shrink: 0;
        }

        /* ============ HERO ============ */
        .hero-section {
            padding-top: calc(var(--nav-height) + 38px);
            padding-bottom: 54px;
            background: var(--bg-white);
            position: relative;
            overflow: hidden;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            min-height: 460px;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            background: #fef3e0;
            color: var(--accent-dark);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
        }

        .hero-content h1 {
            font-size: 2.7rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .hero-content h1 span {
            color: var(--accent);
        }

        .hero-content .hero-desc {
            font-size: 1.08rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 500px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 12px 26px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.96rem;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 2px 10px rgba(214,158,46,0.3);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            box-shadow: 0 4px 18px rgba(214,158,46,0.4);
            transform: translateY(-2px);
            color: #fff;
        }

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

        .btn-outline:hover {
            border-color: var(--primary);
            background: var(--bg-light);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 1.02rem;
        }

        .hero-visual {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-visual-inner {
            width: 100%;
            aspect-ratio: 4/3;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-light);
            position: relative;
            box-shadow: var(--shadow-lg);
        }

        .hero-visual-inner img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .hero-visual-inner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,54,93,0.12) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-stats-float {
            position: absolute;
            bottom: -18px;
            left: -22px;
            background: #fff;
            border-radius: var(--radius);
            padding: 16px 22px;
            box-shadow: var(--shadow-lg);
            display: flex;
            gap: 22px;
            z-index: 3;
        }

        .hero-stat-item {
            text-align: center;
            min-width: 60px;
        }

        .hero-stat-item .stat-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .hero-stat-item .stat-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ============ SECTIONS ============ */
        .section {
            padding: 64px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-header .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
            background: #eef4fb;
            color: var(--primary-light);
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.02em;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1rem;
            margin-top: 8px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ============ INDUSTRY CARDS GRID ============ */
        .industry-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }

        .industry-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .industry-card-img {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-light);
            position: relative;
        }

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

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

        .industry-card-body {
            padding: 22px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .industry-card-body h3 {
            font-size: 1.18rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 6px;
        }

        .industry-card-body p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
            flex: 1;
        }

        .industry-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 14px;
        }

        .industry-tag {
            padding: 4px 10px;
            border-radius: var(--radius-full);
            font-size: 0.76rem;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--text-muted);
        }

        .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary-light);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: all var(--transition-fast);
            margin-top: auto;
        }

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

        .card-link i {
            font-size: 0.75rem;
            transition: transform var(--transition-fast);
        }

        .card-link:hover i {
            transform: translateX(3px);
        }

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

        .advantage-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

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

        .advantage-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 14px;
            background: #eef4fb;
            color: var(--primary-light);
        }

        .advantage-card h4 {
            font-size: 1.04rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--primary-dark);
        }

        .advantage-card p {
            font-size: 0.86rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ============ PROCESS ============ */
        .process-section {
            background: var(--primary-dark);
            color: #fff;
            padding: 64px 0;
        }

        .process-section .section-header h2 {
            color: #fff;
        }

        .process-section .section-header p {
            color: rgba(255,255,255,0.7);
        }

        .process-section .section-tag {
            background: rgba(255,255,255,0.12);
            color: var(--accent-light);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
            counter-reset: step;
        }

        .process-step {
            text-align: center;
            position: relative;
            padding: 28px 18px;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255,255,255,0.1);
            transition: all var(--transition);
        }

        .process-step:hover {
            background: rgba(255,255,255,0.11);
            transform: translateY(-4px);
        }

        .process-step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 14px;
        }

        .process-step h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .process-step p {
            color: rgba(255,255,255,0.65);
            font-size: 0.86rem;
            line-height: 1.5;
        }

        .process-connector {
            display: none;
        }

        /* ============ STATS BANNER ============ */
        .stats-banner {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            box-shadow: var(--shadow);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
            margin-top: -40px;
            position: relative;
            z-index: 4;
        }

        .stat-block .stat-value {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .stat-block .stat-value span {
            color: var(--accent);
        }

        .stat-block .stat-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

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

        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }

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

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

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

        .faq-question i {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

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

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            text-align: center;
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 280px;
            height: 280px;
            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(255,255,255,0.03);
            pointer-events: none;
        }

        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            color: rgba(255,255,255,0.75);
            font-size: 1.04rem;
            margin-bottom: 26px;
            position: relative;
            z-index: 1;
        }

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

        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 18px rgba(0,0,0,0.2);
        }

        .btn-white:hover {
            background: #f0f3f8;
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(0,0,0,0.28);
            color: var(--primary-dark);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.75);
            padding: 44px 0 20px;
            font-size: 0.9rem;
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 40px;
            padding-bottom: 28px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .footer-brand .logo-link {
            color: #fff;
            font-size: 1.15rem;
            margin-bottom: 10px;
            display: inline-flex;
        }

        .footer-brand .logo-link .logo-icon {
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
            color: var(--primary-dark);
        }

        .footer-brand p {
            color: rgba(255,255,255,0.55);
            line-height: 1.6;
            margin-top: 6px;
            max-width: 360px;
        }

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

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 0.86rem;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: 18px;
            color: rgba(255,255,255,0.4);
            font-size: 0.82rem;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 30px;
                min-height: auto;
            }

            .hero-content h1 {
                font-size: 2.1rem;
            }

            .hero-visual-inner {
                aspect-ratio: 16/9;
                max-height: 340px;
            }

            .hero-stats-float {
                position: static;
                margin-top: -28px;
                justify-content: center;
                box-shadow: var(--shadow);
                border-radius: var(--radius);
            }

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

            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .stats-banner {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --container-padding: 16px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 12px 16px;
                gap: 2px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--border-light);
                z-index: 999;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 0.95rem;
            }

            .nav-cta {
                display: none;
            }

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

            .hero-section {
                padding-top: calc(var(--nav-height) + 20px);
                padding-bottom: 32px;
            }

            .hero-content h1 {
                font-size: 1.7rem;
            }

            .hero-content .hero-desc {
                font-size: 0.95rem;
            }

            .hero-stats-float {
                flex-wrap: wrap;
                gap: 14px;
                padding: 14px 16px;
                margin-top: -20px;
            }

            .hero-stat-item .stat-num {
                font-size: 1.2rem;
            }

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

            .advantages-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .advantage-card {
                padding: 20px 16px;
            }

            .process-steps {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .stats-banner {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
                padding: 24px 18px;
                margin-top: -24px;
            }

            .stat-block .stat-value {
                font-size: 1.6rem;
            }

            .section {
                padding: 40px 0;
            }

            .section-header h2 {
                font-size: 1.5rem;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .cta-section p {
                font-size: 0.9rem;
            }

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

            .footer-inner {
                gap: 22px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }

            .btn-lg {
                padding: 12px 24px;
                font-size: 0.94rem;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.45rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn {
                justify-content: center;
                text-align: center;
            }

            .stats-banner {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
                padding: 18px 12px;
            }

            .stat-block .stat-value {
                font-size: 1.3rem;
            }

            .stat-block .stat-desc {
                font-size: 0.75rem;
            }

            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }

            .faq-answer {
                font-size: 0.85rem;
            }

            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }

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