/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1a3a;
            --primary-light: #1a2d5e;
            --primary-dark: #080f22;
            --secondary: #c9952a;
            --secondary-light: #e0b44a;
            --secondary-dark: #a67a1e;
            --accent: #e85d2c;
            --accent-light: #f07a4a;
            --bg: #f4f5f8;
            --bg-white: #ffffff;
            --bg-dark: #0a1228;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-muted: #9ca3af;
            --text-white: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0f0f5;
            --radius: 12px;
            --radius-sm: 6px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 16px 48px rgba(15, 26, 58, 0.15);
            --transition: 0.30s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --section-gap: 80px;
            --section-gap-mobile: 48px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary);
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-sm {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-fluid {
            width: 100%;
            padding: 0 24px;
        }

        /* ===== Section ===== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-title {
            font-size: 2rem;
            text-align: center;
            margin-bottom: 12px;
            color: var(--primary);
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px auto;
            line-height: 1.7;
        }

        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--secondary);
            border-radius: 4px;
            margin: 0 auto 16px auto;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
            text-align: center;
            line-height: 1.2;
        }

        .btn-primary {
            background: var(--secondary);
            color: var(--text-white);
            border-color: var(--secondary);
        }
        .btn-primary:hover {
            background: var(--secondary-dark);
            border-color: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 149, 42, 0.35);
        }
        .btn-primary:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 3px;
        }

        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border-color: var(--text-white);
        }
        .btn-outline:hover {
            background: var(--text-white);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-outline:focus-visible {
            outline: 3px solid var(--text-white);
            outline-offset: 3px;
        }

        .btn-accent {
            background: var(--accent);
            color: var(--text-white);
            border-color: var(--accent);
        }
        .btn-accent:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 93, 44, 0.35);
        }
        .btn-accent:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
        }

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

        .btn-lg {
            padding: 18px 44px;
            font-size: 1.1rem;
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 100px;
            background: var(--bg);
            color: var(--text-light);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .badge-primary {
            background: rgba(201, 149, 42, 0.12);
            color: var(--secondary-dark);
            border-color: rgba(201, 149, 42, 0.25);
        }
        .badge-accent {
            background: rgba(232, 93, 44, 0.10);
            color: var(--accent);
            border-color: rgba(232, 93, 44, 0.20);
        }
        .badge-blue {
            background: rgba(15, 26, 58, 0.08);
            color: var(--primary);
            border-color: rgba(15, 26, 58, 0.15);
        }

        /* ===== Card ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 24px;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .card-image {
            border-radius: var(--radius) var(--radius) 0 0;
            overflow: hidden;
            margin: -28px -24px 20px -24px;
            height: 200px;
            background: var(--bg);
        }
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .card-image+.card-content {
            padding-top: 0;
        }
        .card-content {
            padding: 0;
        }
        .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary);
            line-height: 1.4;
        }
        .card-text {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .card-meta i {
            margin-right: 4px;
        }
        .card-link {
            color: var(--secondary);
            font-weight: 600;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .card-link:hover {
            color: var(--secondary-dark);
            gap: 10px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(15, 26, 58, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-logo i {
            color: var(--secondary);
            font-size: 1.6rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--secondary), #f5d68a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list a {
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-list a:hover {
            color: var(--text-white);
        }
        .nav-list a:hover::after {
            width: 100%;
        }
        .nav-list a.active {
            color: var(--text-white);
        }
        .nav-list a.active::after {
            width: 100%;
            background: var(--secondary);
        }

        .nav-cta {
            background: var(--secondary);
            color: var(--text-white) !important;
            padding: 8px 20px !important;
            border-radius: var(--radius-sm);
            font-weight: 600 !important;
        }
        .nav-cta::after {
            display: none !important;
        }
        .nav-cta:hover {
            background: var(--secondary-light) !important;
            transform: translateY(-1px);
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
            background: none;
            border: none;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-white);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--header-height);
            background: var(--primary-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.30;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 58, 0.88) 0%, rgba(15, 26, 58, 0.60) 60%, rgba(10, 18, 40, 0.80) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            padding-top: 40px;
            padding-bottom: 80px;
        }
        .hero-content {
            max-width: 620px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            background: rgba(201, 149, 42, 0.18);
            color: var(--secondary-light);
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(201, 149, 42, 0.25);
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.15;
            margin-bottom: 20px;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--secondary), #f5d68a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.70);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-visual-card {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            width: 100%;
            max-width: 460px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.30);
        }
        .hero-visual-card .stat-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 24px;
        }
        .hero-visual-card .stat-item {
            text-align: center;
            padding: 16px 8px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-visual-card .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--secondary-light);
            display: block;
        }
        .hero-visual-card .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.60);
            margin-top: 4px;
        }
        .hero-visual-card .quick-links {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 8px;
        }
        .hero-visual-card .quick-links a {
            padding: 8px 18px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 100px;
            color: rgba(255, 255, 255, 0.80);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .hero-visual-card .quick-links a:hover {
            background: rgba(201, 149, 42, 0.20);
            color: var(--secondary-light);
            border-color: rgba(201, 149, 42, 0.25);
            transform: translateY(-2px);
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            text-align: center;
            padding: 40px 28px;
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(201, 149, 42, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px auto;
            font-size: 1.6rem;
            color: var(--secondary);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--secondary);
            color: var(--text-white);
            transform: scale(1.08);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Category Spotlight ===== */
        .spotlight {
            background: var(--bg-white);
        }
        .spotlight-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .spotlight-image {
            border-radius: var(--radius);
            overflow: hidden;
            height: 360px;
            background: var(--bg);
            box-shadow: var(--shadow-lg);
        }
        .spotlight-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .spotlight-image:hover img {
            transform: scale(1.03);
        }
        .spotlight-content h2 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }
        .spotlight-content p {
            font-size: 1rem;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .spotlight-tags {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .spotlight-tags .badge {
            padding: 6px 16px;
        }

        /* ===== News / Posts ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card .card-image {
            height: 180px;
        }
        .news-card .card-title {
            font-size: 1.05rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .card-text {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            font-size: 0.9rem;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            font-size: 1.05rem;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 2.4rem;
            display: block;
            margin-bottom: 16px;
            color: var(--border);
        }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .stats-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stats-item {
            padding: 24px 16px;
        }
        .stats-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--secondary-light);
            display: block;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stats-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.70);
            font-weight: 500;
        }

        /* ===== Process ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .process-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(to right, var(--secondary), var(--secondary-light), var(--secondary));
            opacity: 0.25;
            z-index: 0;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 12px;
        }
        .process-step .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--secondary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto 16px auto;
            box-shadow: 0 4px 16px rgba(201, 149, 42, 0.30);
        }
        .process-step h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            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: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow);
        }
        .faq-question {
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question i {
            color: var(--secondary);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-light);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 80px 24px;
        }
        .cta-title {
            font-size: 2.2rem;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.65);
            max-width: 560px;
            margin: 0 auto 32px auto;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 48px 0 28px 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .site-logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.50);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.92rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.40);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.50);
        }
        .footer-bottom a:hover {
            color: var(--secondary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                text-align: center;
                padding-top: 20px;
                padding-bottom: 60px;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-desc {
                margin: 0 auto 32px auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-title {
                font-size: 2.6rem;
            }
            .hero-visual {
                display: none;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid::before {
                display: none;
            }
            .spotlight-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .spotlight-image {
                height: 260px;
                order: -1;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .stats-number {
                font-size: 2.2rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
                --section-gap: 40px;
            }
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(15, 26, 58, 0.98);
                flex-direction: column;
                padding: 24px 32px 32px 32px;
                gap: 20px;
                transform: translateY(-120%);
                opacity: 0;
                transition: transform 0.35s ease, opacity 0.35s ease;
                backdrop-filter: blur(12px);
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                pointer-events: none;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                font-size: 1.05rem;
            }
            .nav-toggle {
                display: flex;
            }
            .hero-title {
                font-size: 2.0rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-actions .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stats-number {
                font-size: 1.8rem;
            }
            .process-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px 16px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
            .cta-title {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .spotlight-content h2 {
                font-size: 1.4rem;
            }
            .container {
                padding: 0 16px;
            }
            .card-image {
                height: 160px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                font-size: 0.9rem;
            }
            .cta-section .container {
                padding: 48px 16px;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stats-item {
                padding: 16px 8px;
            }
            .stats-number {
                font-size: 1.5rem;
            }
            .process-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .process-step {
                display: flex;
                gap: 16px;
                text-align: left;
                align-items: flex-start;
            }
            .process-step .step-number {
                margin: 0 0 0 0;
                flex-shrink: 0;
            }
            .card {
                padding: 20px 16px;
            }
            .card-image {
                margin: -20px -16px 16px -16px;
                height: 140px;
            }
            .nav-list {
                padding: 20px 20px 28px 20px;
            }
            .section {
                padding: 32px 0;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 1rem;
            }
        }

        /* ===== Accessibility ===== */
        :focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
        }

        /* ===== Smooth scroll offset ===== */
        .scroll-offset {
            scroll-margin-top: calc(var(--header-height) + 24px);
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: article */
:root {
  --primary: #1a5c8a;
  --primary-light: #2a7bb5;
  --primary-dark: #0e3d5f;
  --accent: #e8a838;
  --accent-light: #f0c060;
  --accent-dark: #c88a1e;
  --bg-body: #f5f7fa;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  --bg-dark: #0e1e2d;
  --text-primary: #1a2a3a;
  --text-secondary: #4a5a6a;
  --text-muted: #7a8a9a;
  --text-light: #f0f4f8;
  --border: #dce4ec;
  --border-light: #e8eef4;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 24px 60px rgba(0,0,0,0.16);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --container: 1200px;
  --header-h: 72px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-sans);color:var(--text-primary);background:var(--bg-body);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary-light)}
img{max-width:100%;height:auto;display:block}
button,input,textarea{font-family:inherit;font-size:inherit}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media(max-width:640px){.container{padding:0 16px}}

/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;width:100%;height:var(--header-h);background:rgba(255,255,255,0.95);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);z-index:1000;transition:background var(--transition)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.site-logo{display:flex;align-items:center;gap:10px;font-size:1.35rem;font-weight:700;color:var(--primary-dark);letter-spacing:-0.3px;transition:opacity var(--transition)}
.site-logo i{font-size:1.5rem;color:var(--accent)}
.site-logo:hover{opacity:0.85;color:var(--primary-dark)}
.nav-list{display:flex;align-items:center;gap:8px}
.nav-list a{position:relative;padding:8px 18px;border-radius:var(--radius-sm);font-size:0.95rem;font-weight:500;color:var(--text-secondary);transition:all var(--transition)}
.nav-list a::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:0;height:2px;background:var(--primary);border-radius:2px;transition:width var(--transition)}
.nav-list a:hover::after,.nav-list a.active::after{width:60%}
.nav-list a:hover{color:var(--primary);background:rgba(26,92,138,0.06)}
.nav-list a.active{color:var(--primary);font-weight:600}
.nav-list a.nav-cta{background:var(--primary);color:#fff;padding:8px 22px;border-radius:var(--radius-md);font-weight:600;box-shadow:0 4px 12px rgba(26,92,138,0.25)}
.nav-list a.nav-cta i{margin-right:6px;font-size:0.85rem}
.nav-list a.nav-cta::after{display:none}
.nav-list a.nav-cta:hover{background:var(--primary-light);transform:translateY(-1px);box-shadow:0 6px 20px rgba(26,92,138,0.35)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;border-radius:var(--radius-sm)}
.nav-toggle span{display:block;width:26px;height:2.5px;background:var(--text-primary);border-radius:3px;transition:all var(--transition)}
@media(max-width:768px){
  .nav-toggle{display:flex}
  .nav-list{position:fixed;top:var(--header-h);left:0;width:100%;background:rgba(255,255,255,0.98);backdrop-filter:blur(16px);flex-direction:column;padding:16px 24px 24px;gap:4px;border-bottom:1px solid var(--border);transform:translateY(-110%);opacity:0;pointer-events:none;transition:all var(--transition);box-shadow:var(--shadow-lg)}
  .nav-list.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-list a{width:100%;padding:12px 16px;border-radius:var(--radius-sm)}
  .nav-list a.nav-cta{margin-top:8px;text-align:center}
}

/* ===== Page Banner ===== */
.page-banner{position:relative;margin-top:var(--header-h);padding:80px 0 60px;background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 50%,var(--primary-light) 100%);overflow:hidden;min-height:260px;display:flex;align-items:center}
.page-banner::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.15;mix-blend-mode:overlay}
.page-banner .container{position:relative;z-index:2;text-align:center}
.page-banner h1{font-size:2.2rem;font-weight:800;color:#fff;line-height:1.3;margin-bottom:12px;text-shadow:0 2px 20px rgba(0,0,0,0.2)}
.page-banner .breadcrumb{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;font-size:0.95rem;color:rgba(255,255,255,0.75)}
.page-banner .breadcrumb a{color:rgba(255,255,255,0.85);transition:color var(--transition)}
.page-banner .breadcrumb a:hover{color:#fff}
.page-banner .breadcrumb span{color:rgba(255,255,255,0.6)}
.page-banner .breadcrumb i{font-size:0.7rem;color:rgba(255,255,255,0.4)}
@media(max-width:768px){.page-banner{padding:60px 0 40px;min-height:200px}.page-banner h1{font-size:1.6rem}}
@media(max-width:520px){.page-banner h1{font-size:1.35rem}.page-banner .breadcrumb{font-size:0.85rem}}

/* ===== Article Main ===== */
.article-main{padding:60px 0 80px}
.article-grid{display:grid;grid-template-columns:1fr 340px;gap:48px}
.article-body{background:var(--bg-card);border-radius:var(--radius-lg);padding:40px 44px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light)}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px 28px;margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid var(--border-light)}
.article-meta .meta-item{display:flex;align-items:center;gap:8px;font-size:0.9rem;color:var(--text-muted)}
.article-meta .meta-item i{font-size:0.85rem;color:var(--primary-light)}
.article-meta .category-tag{display:inline-block;padding:4px 16px;border-radius:20px;background:rgba(26,92,138,0.08);color:var(--primary);font-size:0.85rem;font-weight:600}
.article-content{font-size:1.05rem;line-height:1.85;color:var(--text-primary)}
.article-content p{margin-bottom:1.4em}
.article-content h2,.article-content h3,.article-content h4{margin-top:1.8em;margin-bottom:0.8em;font-weight:700;color:var(--primary-dark);line-height:1.35}
.article-content h2{font-size:1.6rem}
.article-content h3{font-size:1.3rem}
.article-content ul,.article-content ol{padding-left:1.5em;margin-bottom:1.4em}
.article-content li{margin-bottom:0.5em}
.article-content img{border-radius:var(--radius-md);margin:1.5em auto;box-shadow:var(--shadow-sm)}
.article-content a{color:var(--primary);border-bottom:1px solid rgba(26,92,138,0.25)}
.article-content a:hover{border-bottom-color:var(--primary)}
.article-content blockquote{border-left:4px solid var(--accent);background:rgba(232,168,56,0.06);padding:16px 24px;margin:1.5em 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary);font-style:italic}
.article-content .highlight-box{background:linear-gradient(135deg,rgba(26,92,138,0.04),rgba(232,168,56,0.04));border:1px solid var(--border-light);border-radius:var(--radius-md);padding:20px 24px;margin:1.5em 0}
.article-nav{display:flex;justify-content:space-between;align-items:center;margin-top:40px;padding-top:28px;border-top:1px solid var(--border-light);flex-wrap:wrap;gap:16px}
.article-nav a{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--radius-md);border:1px solid var(--border);font-size:0.92rem;font-weight:500;color:var(--text-secondary);transition:all var(--transition)}
.article-nav a:hover{background:var(--bg-body);border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}

/* ===== Sidebar ===== */
.article-sidebar{display:flex;flex-direction:column;gap:32px}
.sidebar-card{background:var(--bg-card);border-radius:var(--radius-lg);padding:28px 24px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light)}
.sidebar-card h3{font-size:1.1rem;font-weight:700;color:var(--primary-dark);margin-bottom:18px;padding-bottom:12px;border-bottom:2px solid var(--accent);display:flex;align-items:center;gap:10px}
.sidebar-card h3 i{color:var(--accent);font-size:1rem}
.sidebar-related{display:flex;flex-direction:column;gap:12px}
.sidebar-related a{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--border-light);transition:all var(--transition)}
.sidebar-related a:last-child{border-bottom:none}
.sidebar-related a:hover{transform:translateX(4px)}
.sidebar-related .rel-img{width:70px;height:55px;border-radius:var(--radius-sm);object-fit:cover;flex-shrink:0;background:var(--bg-body)}
.sidebar-related .rel-info{flex:1;min-width:0}
.sidebar-related .rel-title{font-size:0.92rem;font-weight:600;color:var(--text-primary);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sidebar-related .rel-date{font-size:0.8rem;color:var(--text-muted);margin-top:4px}
.sidebar-cta{background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;text-align:center;padding:32px 20px;border-radius:var(--radius-lg)}
.sidebar-cta h4{font-size:1.15rem;font-weight:700;margin-bottom:10px}
.sidebar-cta p{font-size:0.92rem;opacity:0.85;margin-bottom:18px;line-height:1.6}
.sidebar-cta .btn-cta{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:var(--primary-dark);padding:12px 28px;border-radius:var(--radius-md);font-weight:700;font-size:0.95rem;transition:all var(--transition);box-shadow:0 6px 20px rgba(232,168,56,0.35)}
.sidebar-cta .btn-cta:hover{background:var(--accent-light);transform:translateY(-2px);box-shadow:0 8px 28px rgba(232,168,56,0.45)}
@media(max-width:1024px){.article-grid{grid-template-columns:1fr;gap:36px}.article-sidebar{max-width:520px;margin:0 auto}}
@media(max-width:640px){.article-body{padding:24px 18px}.article-meta{gap:12px 18px;font-size:0.85rem}.article-content{font-size:0.98rem}.article-content h2{font-size:1.3rem}}

/* ===== Not Found ===== */
.not-found{text-align:center;padding:80px 20px;min-height:50vh;display:flex;flex-direction:column;align-items:center;justify-content:center}
.not-found i{font-size:3.5rem;color:var(--text-muted);margin-bottom:20px;opacity:0.5}
.not-found h2{font-size:1.8rem;color:var(--text-primary);margin-bottom:12px}
.not-found p{color:var(--text-secondary);margin-bottom:24px;max-width:460px}
.not-found .btn-back{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;background:var(--primary);color:#fff;border-radius:var(--radius-md);font-weight:600;transition:all var(--transition)}
.not-found .btn-back:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:var(--shadow-md)}

/* ===== Footer ===== */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,0.8);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.08)}
.footer-brand .site-logo{color:#fff;margin-bottom:12px}
.footer-brand .site-logo i{color:var(--accent)}
.footer-brand p{font-size:0.92rem;opacity:0.7;line-height:1.7;max-width:380px}
.footer-col h4{color:#fff;font-size:1rem;font-weight:700;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:32px;height:2px;background:var(--accent);border-radius:2px}
.footer-col{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,0.65);font-size:0.92rem;transition:all var(--transition);padding:4px 0}
.footer-col a:hover{color:var(--accent);transform:translateX(4px)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding:24px 0;font-size:0.85rem;color:rgba(255,255,255,0.45)}
.footer-bottom a{color:rgba(255,255,255,0.6);border-bottom:1px solid transparent}
.footer-bottom a:hover{color:var(--accent);border-bottom-color:var(--accent)}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr;gap:32px}}

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --primary-dark: #0f2440;
            --accent: #e67e22;
            --accent-light: #f39c12;
            --accent-dark: #d35400;
            --bg-body: #f5f7fb;
            --bg-white: #ffffff;
            --bg-light: #eef1f6;
            --bg-dark: #1a2a3f;
            --text-main: #1e2a3a;
            --text-secondary: #4a5a6e;
            --text-muted: #7a8a9e;
            --text-white: #f0f4fa;
            --border-color: #dce2ea;
            --border-light: #e8edf3;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.13);
            --transition: 0.30s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 68px;
            --spacing-section: 4.5rem;
            --spacing-block: 2.5rem;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-body);
            padding-top: var(--header-height);
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--primary-dark);
        }

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

        /* ===== Header / 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            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: 0 2px 12px rgba(0, 0, 0, 0.03);
            transition: background var(--transition);
        }

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

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.3px;
            transition: opacity var(--transition);
        }
        .site-logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .site-logo span {
            color: var(--primary);
        }
        .site-logo:hover {
            opacity: 0.85;
            color: var(--primary-dark);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: background var(--transition), color var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .nav-list a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(30, 58, 95, 0.20);
        }
        .nav-list a.active:hover {
            background: var(--primary-light);
            color: #fff;
        }
        .nav-list a.nav-cta {
            background: var(--accent);
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(230, 126, 34, 0.30);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .nav-list a.nav-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(230, 126, 34, 0.40);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 36px;
            height: 36px;
            padding: 6px;
            border-radius: var(--radius-sm);
            background: var(--bg-light);
            cursor: pointer;
            transition: background var(--transition);
        }
        .nav-toggle span {
            display: block;
            height: 2.5px;
            background: var(--text-main);
            border-radius: 4px;
            transition: transform var(--transition), opacity var(--transition);
        }
        .nav-toggle:hover {
            background: var(--border-color);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(14px);
                -webkit-backdrop-filter: blur(14px);
                flex-direction: column;
                padding: 18px 24px 28px;
                gap: 8px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.40s ease, opacity 0.40s ease;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 18px;
                font-size: 1.05rem;
                justify-content: center;
            }
            .nav-list a.nav-cta {
                margin-top: 6px;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }
        }

        @media (max-width: 480px) {
            .site-logo {
                font-size: 1.25rem;
                gap: 8px;
            }
            .site-logo i {
                font-size: 1.3rem;
            }
            .nav-list a {
                font-size: 0.95rem;
                padding: 10px 14px;
            }
        }

        /* ===== Hero / 分类横幅 ===== */
        .category-hero {
            position: relative;
            padding: 4rem 0 3.5rem;
            background: var(--primary-dark);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.20;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 36, 64, 0.70) 0%, rgba(30, 58, 95, 0.45) 100%);
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            margin-bottom: 0.75rem;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.20);
        }
        .category-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 1.5rem;
            line-height: 1.7;
        }
        .category-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .category-hero .hero-tags span {
            display: inline-block;
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.13);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.90);
            border: 1px solid rgba(255, 255, 255, 0.10);
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 2.8rem 0 2.4rem;
                min-height: 210px;
            }
            .category-hero h1 {
                font-size: 1.9rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 480px) {
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .category-hero p {
                font-size: 0.92rem;
            }
            .category-hero .hero-tags span {
                font-size: 0.78rem;
                padding: 4px 14px;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-light {
            background: var(--bg-light);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: #fff;
        }

        .section-header {
            text-align: center;
            margin-bottom: 2.8rem;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.6rem;
            letter-spacing: -0.3px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
        }
        .section-dark .section-header h2 {
            color: #fff;
        }
        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.75);
        }

        @media (max-width: 768px) {
            .section {
                padding: 2.8rem 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .section-header p {
                font-size: 0.95rem;
            }
        }

        /* ===== 卡片网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-3,
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-color);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            display: block;
        }
        .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .card-body p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }
        .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .card-body .card-meta i {
            margin-right: 4px;
        }
        .card-body .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 12px;
        }
        .card-body .card-tags span {
            display: inline-block;
            padding: 2px 12px;
            background: var(--bg-light);
            border-radius: 20px;
            font-size: 0.75rem;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            transition: gap var(--transition), color var(--transition);
            margin-top: auto;
        }
        .card-body .card-link:hover {
            gap: 12px;
            color: var(--accent);
        }

        .card-featured {
            border-left: 4px solid var(--accent);
        }
        .card-featured .card-body h3 {
            color: var(--accent-dark);
        }

        @media (max-width: 520px) {
            .card-body {
                padding: 16px 18px 20px;
            }
            .card-body h3 {
                font-size: 1.05rem;
            }
        }

        /* ===== 特色图文区块 ===== */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
        }
        .feature-block.reverse {
            direction: rtl;
        }
        .feature-block.reverse>* {
            direction: ltr;
        }
        .feature-block .feature-img {
            width: 100%;
            height: 100%;
            min-height: 280px;
            object-fit: cover;
            border-radius: 0;
        }
        .feature-block .feature-content {
            padding: 40px 44px 40px 32px;
        }
        .feature-block.reverse .feature-content {
            padding: 40px 32px 40px 44px;
        }
        .feature-block .feature-content h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 12px;
        }
        .feature-block .feature-content p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .feature-block .feature-content .feature-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 20px;
        }
        .feature-block .feature-content .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }
        .feature-block .feature-content .feature-list li i {
            color: var(--accent);
            margin-top: 4px;
            font-size: 1rem;
            flex-shrink: 0;
        }

        @media (max-width: 900px) {
            .feature-block {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .feature-block .feature-img {
                min-height: 200px;
                max-height: 280px;
            }
            .feature-block .feature-content,
        .feature-block.reverse .feature-content {
                padding: 28px 24px 32px;
            }
            .feature-block .feature-content h3 {
                font-size: 1.3rem;
            }
            .feature-block.reverse {
                direction: ltr;
            }
        }

        /* ===== 分类入口网格 ===== */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .cat-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 24px 18px;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            cursor: default;
        }
        .cat-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-color);
        }
        .cat-item i {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 12px;
            display: block;
        }
        .cat-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 6px;
        }
        .cat-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .cat-item .cat-badge {
            display: inline-block;
            margin-top: 10px;
            padding: 2px 14px;
            background: var(--bg-light);
            border-radius: 20px;
            font-size: 0.72rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        @media (max-width: 1024px) {
            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .cat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .cat-item {
                padding: 18px 12px;
            }
            .cat-item i {
                font-size: 1.8rem;
            }
            .cat-item h4 {
                font-size: 0.92rem;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 28px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }
        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.80);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            background: none;
            cursor: pointer;
            text-align: left;
            transition: background var(--transition), color var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .faq-question i {
            font-size: 1.1rem;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        @media (max-width: 520px) {
            .faq-question {
                padding: 14px 18px;
                font-size: 0.92rem;
            }
            .faq-answer {
                font-size: 0.88rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            background-image: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 3.8rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            color: #fff;
            margin-bottom: 0.75rem;
            font-weight: 700;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.80);
            max-width: 580px;
            margin: 0 auto 1.8rem;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            border-radius: var(--radius-sm);
            box-shadow: 0 6px 24px rgba(230, 126, 34, 0.35);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .cta-section .cta-btn:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(230, 126, 34, 0.45);
            color: #fff;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 2.6rem 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .cta-btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.70);
            padding: 3.2rem 0 1.2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .container {
            max-width: var(--container-max);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 2.4rem;
        }
        .footer-brand .site-logo {
            margin-bottom: 12px;
            color: #fff;
        }
        .footer-brand .site-logo span {
            color: #fff;
        }
        .footer-brand .site-logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.60);
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.60);
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 1.8rem;
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: var(--accent-light);
        }
        .footer-bottom a:hover {
            color: var(--accent);
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 16px 0 0;
            margin-bottom: 0;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
            font-size: 0.75rem;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* ===== 辅助类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .gap-1 {
            gap: 1rem;
        }

        /* ===== 文章列表行 ===== */
        .article-row {
            display: flex;
            gap: 24px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .article-row:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .article-row .row-img {
            width: 260px;
            min-height: 170px;
            object-fit: cover;
            flex-shrink: 0;
            border-radius: 0;
        }
        .article-row .row-body {
            padding: 22px 24px 22px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }
        .article-row .row-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }
        .article-row .row-body p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .article-row .row-body .row-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .article-row {
                flex-direction: column;
            }
            .article-row .row-img {
                width: 100%;
                min-height: 180px;
                max-height: 220px;
            }
            .article-row .row-body {
                padding: 16px 20px 20px;
            }
        }
        @media (max-width: 480px) {
            .article-row .row-body h3 {
                font-size: 1.05rem;
            }
            .article-row .row-img {
                min-height: 150px;
            }
        }

        /* ===== 分页 ===== */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            margin-top: 2.8rem;
            flex-wrap: wrap;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            transition: background var(--transition), color var(--transition), border-color var(--transition);
        }
        .pagination a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .pagination .active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(30, 58, 95, 0.20);
        }
        .pagination .disabled {
            opacity: 0.50;
            pointer-events: none;
        }

        /* ===== 滚动动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.60s ease, transform 0.60s ease;
        }
        .fade-up.show {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            :root {
                --spacing-section: 2.4rem;
            }
        }