/* roulang page: index */
:root {
            --primary: #2C7BE5;
            --primary-dark: #1a5db8;
            --primary-light: #E8F0FE;
            --secondary: #3B82F6;
            --bg: #F8FAFC;
            --bg-alt: #E8F0FE;
            --white: #FFFFFF;
            --text: #1E293B;
            --text-mid: #475569;
            --text-light: #64748B;
            --text-lighter: #94A3B8;
            --border: #E2E8F0;
            --success: #10B981;
            --warning: #F59E0B;
            --danger: #EF4444;
            --radius-sm: 8px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
            --section-gap: 80px;
        }

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

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

        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.8;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--primary);
        }
        .logo:hover {
            color: var(--primary-dark);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            flex-wrap: wrap;
        }
        .nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-mid);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-links li a.active {
            font-weight: 600;
        }
        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            padding: 8px 20px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
        }
        .nav-cta:hover {
            background: var(--primary-dark) !important;
            color: #fff !important;
        }

        /* 汉堡菜单 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 8px;
            z-index: 1001;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(44, 123, 229, 0.22) 0%, rgba(30, 41, 59, 0.55) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            padding-top: 40px;
            padding-bottom: 40px;
        }
        .hero-content {
            flex: 1 1 500px;
            max-width: 620px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .hero h1 {
            font-size: 2.5rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .hero h1 span {
            color: #FFD166;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition);
            border: 2px solid transparent;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.7);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.9rem;
            border-radius: 50px;
        }
        .btn-text {
            background: none;
            border: none;
            color: var(--primary);
            padding: 6px 0;
            font-weight: 600;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }
        .btn-text:hover {
            color: var(--primary-dark);
            gap: 10px;
        }
        .hero-stats {
            flex: 0 0 auto;
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .hero-stat-card {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            border-radius: var(--radius);
            padding: 20px 24px;
            text-align: center;
            color: #fff;
            min-width: 100px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .hero-stat-card .stat-num {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1;
            color: #FFD166;
        }
        .hero-stat-card .stat-label {
            font-size: 0.85rem;
            margin-top: 4px;
            opacity: 0.9;
        }

        /* ========== SECTIONS ========== */
        section {
            padding: var(--section-gap) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .section-header p {
            font-size: 1rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 5px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        /* ========== SERVICE CARDS GRID (券面网格) ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
            gap: 14px;
            cursor: default;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .service-card .card-tag {
            position: absolute;
            top: 14px;
            right: 14px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 50px;
            letter-spacing: 0.02em;
        }
        .service-card .card-tag.hot {
            background: #FEF3C7;
            color: #D97706;
        }
        .service-card .card-tag.new {
            background: #D1FAE5;
            color: #059669;
        }
        .service-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .service-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin: 0;
            letter-spacing: -0.01em;
        }
        .service-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            margin: 0;
            flex-grow: 1;
        }
        .service-card .card-img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: 10px;
            margin-top: 4px;
        }
        .service-card .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            margin-top: auto;
        }
        .service-card .card-link:hover {
            color: var(--primary-dark);
        }

        /* ========== STEPS (使用规则) ========== */
        .steps-section {
            background: var(--white);
        }
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            position: relative;
            background: var(--bg);
            border-radius: var(--radius);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .step-item:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.3rem;
            margin-bottom: 16px;
            box-shadow: 0 4px 14px rgba(44, 123, 229, 0.35);
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        .step-arrow {
            display: none;
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            box-shadow: var(--shadow);
            border-left: 5px solid var(--primary);
        }
        .brand-intro h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }
        .brand-intro p {
            font-size: 1rem;
            color: var(--text-mid);
            line-height: 1.9;
            max-width: 800px;
        }

        /* ========== STATS BAR ========== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .stat-card .stat-value {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.1;
        }
        .stat-card .stat-value span {
            color: var(--primary);
        }
        .stat-card .stat-desc {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 6px;
        }

        /* ========== CASE CARDS ========== */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .case-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .case-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .case-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .case-card .case-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .case-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin: 0;
        }
        .case-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            margin: 0;
            flex-grow: 1;
        }
        .case-card .case-meta {
            font-size: 0.8rem;
            color: var(--text-lighter);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            box-shadow: var(--shadow);
        }
        .deep-content h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
        }
        .deep-content p {
            font-size: 1rem;
            color: var(--text-mid);
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .deep-content .highlight-box {
            background: var(--primary-light);
            border-radius: var(--radius);
            padding: 20px 24px;
            margin: 20px 0;
            border-left: 4px solid var(--primary);
        }
        .deep-content .highlight-box p {
            margin: 0;
            font-weight: 500;
            color: var(--text);
        }

        /* ========== NEWS LIST ========== */
        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
            align-items: start;
        }
        .news-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-list li {
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all var(--transition);
        }
        .news-list li:hover {
            background: #f8fafc;
            margin: 0 -12px;
            padding-left: 12px;
            padding-right: 12px;
            border-radius: 8px;
        }
        .news-date {
            flex-shrink: 0;
            font-size: 0.85rem;
            color: var(--text-lighter);
            min-width: 90px;
            padding-top: 2px;
            font-weight: 500;
        }
        .news-info h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 4px;
            line-height: 1.4;
        }
        .news-info p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin: 0;
            line-height: 1.5;
        }
        .news-info .btn-text {
            margin-top: 6px;
            font-size: 0.85rem;
        }
        .news-sidebar {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            position: sticky;
            top: calc(var(--nav-height) + 20px);
        }
        .news-sidebar h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
        }
        .news-sidebar ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .news-sidebar ul li a {
            font-size: 0.9rem;
            color: var(--text-mid);
            display: block;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all var(--transition);
            font-weight: 500;
        }
        .news-sidebar ul li a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ========== FAQ ACCORDION ========== */
        .faq-section {
            background: var(--white);
        }
        .accordion-faq {
            max-width: 800px;
            margin: 0 auto;
        }
        .accordion-faq .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .accordion-faq .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 0;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            text-align: left;
            transition: color var(--transition);
            gap: 12px;
        }
        .accordion-faq .faq-question:hover {
            color: var(--primary);
        }
        .accordion-faq .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition);
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .accordion-faq .faq-question.active .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .accordion-faq .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .accordion-faq .faq-answer.open {
            max-height: 400px;
            padding-bottom: 20px;
        }
        .accordion-faq .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-mid);
            line-height: 1.8;
            margin: 0;
        }

        /* ========== CONTACT ========== */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .contact-form {
            background: var(--white);
            border-radius: var(--radius);
            padding: 36px 32px;
            box-shadow: var(--shadow);
        }
        .contact-form h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text);
        }
        .contact-form label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-mid);
            margin-bottom: 4px;
            display: block;
        }
        .contact-form input,
        .contact-form textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            transition: all var(--transition);
            background: var(--bg);
            margin-bottom: 16px;
            resize: vertical;
            font-family: inherit;
        }
        .contact-form input:focus,
        .contact-form textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(44, 123, 229, 0.1);
            background: #fff;
        }
        .contact-info {
            background: var(--white);
            border-radius: var(--radius);
            padding: 36px 32px;
            box-shadow: var(--shadow);
        }
        .contact-info h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text);
        }
        .contact-info .info-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            margin-bottom: 18px;
        }
        .contact-info .info-item i {
            font-size: 1.2rem;
            color: var(--primary);
            margin-top: 3px;
            width: 20px;
            text-align: center;
        }
        .contact-info .info-item span {
            font-size: 0.95rem;
            color: var(--text-mid);
            line-height: 1.6;
        }

        /* ========== CTA BANNER ========== */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary) 0%, #1a5db8 100%);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        .cta-banner h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }
        .cta-banner p {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .cta-banner .btn {
            font-size: 1.1rem;
            padding: 14px 36px;
        }
        .cta-banner .btn-primary {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
            font-weight: 700;
        }
        .cta-banner .btn-primary:hover {
            background: #f0f4ff;
            border-color: #f0f4ff;
            color: var(--primary-dark);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: #94A3B8;
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #94A3B8;
        }
        .footer-bottom a {
            color: #94A3B8;
            font-size: 0.85rem;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            display: inline-block;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 56px;
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: 1fr 1fr;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .news-sidebar {
                position: static;
                order: -1;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero {
                min-height: 360px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 40px;
                --nav-height: 56px;
            }
            .hamburger {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                transition: transform var(--transition);
                z-index: 999;
                border-bottom: 2px solid var(--border);
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-links li a {
                display: block;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .steps-list {
                grid-template-columns: 1fr 1fr;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
            .hero {
                min-height: 320px;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero .container {
                flex-direction: column;
                text-align: center;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-stats {
                justify-content: center;
            }
            .hero-content {
                max-width: 100%;
            }
            .brand-intro {
                padding: 28px 20px;
            }
            .deep-content {
                padding: 28px 20px;
            }
            .cta-banner {
                padding: 36px 20px;
            }
            .cta-banner h2 {
                font-size: 1.5rem;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .contact-form,
            .contact-info {
                padding: 24px 18px;
            }
            .news-list li {
                flex-direction: column;
                gap: 4px;
            }
            .news-date {
                min-width: auto;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.4rem;
            }
            .hero {
                min-height: 280px;
            }
            .hero-stat-card {
                padding: 14px 16px;
                min-width: 70px;
            }
            .hero-stat-card .stat-num {
                font-size: 1.4rem;
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: 1fr;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .service-card {
                padding: 20px 16px;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .container {
                padding: 0 16px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2C7BE5;
            --primary-dark: #1a5db8;
            --primary-light: #E8F0FE;
            --secondary: #3B82F6;
            --bg: #F8FAFC;
            --bg-alt: #E8F0FE;
            --white: #FFFFFF;
            --text: #1E293B;
            --text-mid: #475569;
            --text-light: #64748B;
            --text-lighter: #94A3B8;
            --border: #E2E8F0;
            --success: #10B981;
            --warning: #F59E0B;
            --danger: #EF4444;
            --radius-sm: 8px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
            --section-gap: 80px;
        }

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

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

        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.8;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--primary);
        }
        .logo:hover {
            color: var(--primary-dark);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            flex-wrap: wrap;
        }
        .nav-links li a {
            display: inline-block;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.93rem;
            color: var(--text-mid);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-links li a.active {
            font-weight: 600;
        }
        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            padding: 8px 20px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
            margin-left: 8px;
        }
        .nav-cta:hover {
            background: var(--primary-dark) !important;
            color: #fff !important;
        }

        /* 汉堡菜单 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 8px;
            z-index: 1001;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 460px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 41, 59, 0.65) 0%, rgba(44, 123, 229, 0.35) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            width: 100%;
        }
        .hero-content {
            color: #fff;
        }
        .hero-content .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 16px;
            color: #fff;
            letter-spacing: 0.02em;
        }
        .hero-content h1 {
            font-size: 2.5rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .hero-content .hero-subtitle {
            font-size: 1.1rem;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.6;
            margin-bottom: 0;
            max-width: 480px;
        }
        .hero-form-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-lg);
            z-index: 3;
        }
        .hero-form-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .hero-form-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 18px;
        }
        .hero-form-card .form-row {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .hero-form-card input[type="email"] {
            flex: 1;
            min-width: 180px;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            transition: all var(--transition);
            background: var(--bg);
            color: var(--text);
        }
        .hero-form-card input[type="email"]:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(44, 123, 229, 0.12);
            background: #fff;
        }
        .hero-form-card .btn-submit {
            padding: 12px 24px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .hero-form-card .btn-submit:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow);
        }
        .hero-form-card .form-note {
            font-size: 0.78rem;
            color: var(--text-lighter);
            margin-top: 10px;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-alt {
            background: var(--white);
        }
        .section-bg {
            background: var(--bg-alt);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: -0.02em;
        }
        .section-header .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.82rem;
            padding: 5px 14px;
            border-radius: 50px;
            margin-bottom: 10px;
            letter-spacing: 0.04em;
        }

        /* ========== CARDS ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 22px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            text-align: center;
            border: 1px solid transparent;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: var(--primary);
            transition: all var(--transition);
        }
        .card:hover .card-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== STATS BAR ========== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .stat-item {
            padding: 20px;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.03em;
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-mid);
            font-weight: 500;
        }
        .stat-suffix {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary);
        }

        /* ========== CONTENT BLOCK ========== */
        .content-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .content-block.reverse {
            direction: rtl;
        }
        .content-block.reverse .content-text {
            direction: ltr;
        }
        .content-block .content-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .content-block .content-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .content-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .content-text p {
            font-size: 1rem;
            color: var(--text-mid);
            line-height: 1.85;
            margin-bottom: 14px;
        }
        .content-text .highlight-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }
        .content-text .highlight-list li {
            padding: 8px 0 8px 28px;
            position: relative;
            font-size: 0.95rem;
            color: var(--text-mid);
        }
        .content-text .highlight-list li::before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 8px;
            color: var(--success);
            font-size: 0.9rem;
        }

        /* ========== NEWS LIST ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            background: var(--white);
            border-radius: var(--radius);
            padding: 22px 24px;
            box-shadow: var(--shadow-sm);
            display: grid;
            grid-template-columns: 90px 1fr auto;
            gap: 18px;
            align-items: center;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .news-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
            transform: translateX(3px);
        }
        .news-date {
            font-size: 0.85rem;
            color: var(--text-lighter);
            font-weight: 500;
            white-space: nowrap;
            text-align: center;
            line-height: 1.4;
        }
        .news-date strong {
            display: block;
            font-size: 1.6rem;
            color: var(--primary);
            font-weight: 700;
            line-height: 1;
        }
        .news-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .news-body p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin: 0;
            line-height: 1.5;
        }
        .news-link {
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            color: var(--primary);
            transition: all var(--transition);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
        }
        .news-link:hover {
            background: var(--primary);
            color: #fff;
        }
        .news-link i {
            margin-left: 4px;
            transition: transform var(--transition);
        }
        .news-link:hover i {
            transform: translateX(3px);
        }

        /* ========== LEAGUE GRID ========== */
        .league-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .league-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 20px 14px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border);
            cursor: default;
        }
        .league-card:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .league-card .league-icon {
            font-size: 2rem;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .league-card h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text);
            margin: 0;
        }
        .league-card span {
            font-size: 0.75rem;
            color: var(--text-lighter);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            background: none;
            border: none;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: all var(--transition);
            font-family: var(--font-stack);
        }
        .faq-question i {
            color: var(--primary);
            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 0.4s ease, padding 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-mid);
            line-height: 1.75;
            margin: 0;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--primary);
            color: #fff;
            padding: 56px 0;
            text-align: center;
            border-radius: 0;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta {
            display: inline-block;
            padding: 14px 32px;
            background: #fff;
            color: var(--primary);
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }
        .btn-cta:hover {
            background: #f0f4ff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            color: var(--primary-dark);
        }
        .btn-outline-light {
            display: inline-block;
            padding: 14px 32px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            margin-left: 12px;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #94A3B8;
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.82rem;
            color: #94A3B8;
            justify-content: space-between;
            align-items: center;
        }
        .footer-bottom a {
            color: #94A3B8;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 56px;
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .content-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .content-block.reverse {
                direction: ltr;
            }
            .hero .container {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero {
                min-height: auto;
                padding: 40px 0;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .league-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .news-item {
                grid-template-columns: 70px 1fr;
                gap: 14px;
            }
            .news-link {
                grid-column: 1 / -1;
                text-align: center;
                margin-top: 4px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 40px;
                --nav-height: 56px;
            }
            .hamburger {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                padding: 80px 24px 32px;
                gap: 8px;
                box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
                transition: right var(--transition);
                z-index: 999;
                align-items: stretch;
                overflow-y: auto;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links li a {
                display: block;
                padding: 12px 16px;
                font-size: 1rem;
                text-align: left;
                border-radius: var(--radius-sm);
            }
            .nav-cta {
                margin-left: 0;
                text-align: center;
                margin-top: 8px;
            }
            .card-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-form-card {
                padding: 22px 18px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .league-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .news-item {
                grid-template-columns: 60px 1fr;
                padding: 16px;
            }
            .cta-section .btn-outline-light {
                margin-left: 0;
                margin-top: 10px;
                display: inline-block;
            }
        }

        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
            }
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-form-card .form-row {
                flex-direction: column;
            }
            .league-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .news-item {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .news-date {
                text-align: center;
            }
            .news-link {
                text-align: center;
                display: block;
            }
        }

        /* 移动端导航遮罩 */
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 998;
        }
        .nav-overlay.show {
            display: block;
        }

/* roulang page: category2 */
:root {
            --primary: #2C7BE5;
            --primary-dark: #1a5db8;
            --primary-light: #E8F0FE;
            --secondary: #3B82F6;
            --bg: #F8FAFC;
            --bg-alt: #E8F0FE;
            --white: #FFFFFF;
            --text: #1E293B;
            --text-mid: #475569;
            --text-light: #64748B;
            --text-lighter: #94A3B8;
            --border: #E2E8F0;
            --success: #10B981;
            --warning: #F59E0B;
            --danger: #EF4444;
            --accent-orange: #F97316;
            --accent-red: #DC2626;
            --radius-sm: 8px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
            --section-gap: 80px;
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 40px;
                --nav-height: 56px;
            }
        }

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

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

        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.8;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

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

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

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

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

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }

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

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            font-size: 1.6rem;
            color: var(--primary);
        }

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

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

        .nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-mid);
            transition: all var(--transition);
            white-space: nowrap;
        }

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

        .nav-links li a.active {
            font-weight: 600;
        }

        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            padding: 8px 20px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
        }

        .nav-cta:hover {
            background: var(--primary-dark) !important;
            color: #fff !important;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 8px;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

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

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== HERO - 闪购条风格 ========== */
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 480px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 41, 59, 0.75) 0%, rgba(44, 123, 229, 0.35) 50%, rgba(30, 41, 59, 0.7) 100%);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            width: 100%;
        }

        .hero-flash-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-red), var(--accent-orange));
            color: #fff;
            padding: 10px 22px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.04em;
            animation: pulse-badge 2s ease-in-out infinite;
            white-space: nowrap;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5);
            }
            50% {
                box-shadow: 0 0 0 16px rgba(239, 68, 68, 0);
            }
        }

        .hero-flash-badge i {
            font-size: 1rem;
        }

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

        .hero-countdown-label {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
        }

        .hero-countdown {
            display: flex;
            gap: 6px;
            align-items: center;
        }

        .countdown-item {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 10px;
            padding: 8px 14px;
            text-align: center;
            min-width: 52px;
        }

        .countdown-item .count-num {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            line-height: 1;
            font-variant-numeric: tabular-nums;
            font-family: "SF Mono", "Consolas", "Monaco", monospace;
        }

        .countdown-item .count-label {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 2px;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .hero-main-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-lg);
            max-width: 440px;
            width: 100%;
            position: relative;
            overflow: hidden;
        }

        .hero-main-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-red), var(--accent-orange), var(--warning));
        }

        .hero-main-card .card-tag {
            display: inline-block;
            background: #FEF2F2;
            color: var(--accent-red);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .hero-main-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px 0;
            line-height: 1.4;
        }

        .hero-main-card .card-desc {
            font-size: 0.9rem;
            color: var(--text-light);
            margin: 0 0 16px 0;
            line-height: 1.6;
        }

        .hero-main-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-lighter);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .hero-main-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .btn-flash-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-red), var(--accent-orange));
            color: #fff;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            white-space: nowrap;
            text-decoration: none;
            box-shadow: 0 4px 16px rgba(239, 68, 68, 0.35);
        }

        .btn-flash-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(239, 68, 68, 0.5);
            color: #fff;
            background: linear-gradient(135deg, #c81e1e, #e0650f);
        }

        .hero-text-block {
            flex: 1;
            min-width: 280px;
        }

        .hero-text-block h1 {
            font-size: 2.5rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px 0;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .hero-text-block .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 0 8px 0;
            line-height: 1.5;
        }

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

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

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

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px 0;
            line-height: 1.2;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-light);
            margin: 0 0 40px 0;
            line-height: 1.6;
            max-width: 640px;
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header.centered {
            text-align: center;
        }

        .section-header.centered .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== CARDS ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }

        .card-grid.cols-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .card-grid.cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

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

        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px 0;
            line-height: 1.4;
        }

        .card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin: 0 0 16px 0;
            line-height: 1.6;
            flex: 1;
        }

        .card .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--primary);
            transition: gap var(--transition);
        }

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

        /* ========== ARTICLE LIST ========== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .article-item {
            display: flex;
            gap: 20px;
            background: var(--white);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            align-items: flex-start;
        }

        .article-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .article-thumb {
            width: 160px;
            height: 110px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-alt);
        }

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

        .article-date {
            font-size: 0.8rem;
            color: var(--text-lighter);
            margin-bottom: 4px;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .article-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 6px 0;
            line-height: 1.4;
        }

        .article-excerpt {
            font-size: 0.9rem;
            color: var(--text-light);
            margin: 0 0 10px 0;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-readmore {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition);
        }

        .article-readmore:hover {
            gap: 8px;
            color: var(--primary-dark);
        }

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

        .stat-item {
            background: var(--white);
            border-radius: var(--radius);
            padding: 32px 20px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

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

        .stat-num {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -0.02em;
        }

        .stat-num .stat-unit {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--text-light);
        }

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

        /* ========== PROCESS ========== */
        .process-list {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            counter-reset: step;
        }

        .process-item {
            flex: 1;
            min-width: 220px;
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            position: relative;
            counter-increment: step;
            transition: all var(--transition);
        }

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

        .process-step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            flex-shrink: 0;
        }

        .process-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 6px 0;
        }

        .process-item p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid var(--border);
        }

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

        .faq-question {
            width: 100%;
            padding: 18px 24px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-family: inherit;
            transition: color var(--transition);
            line-height: 1.5;
        }

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

        .faq-question .faq-icon {
            font-size: 0.9rem;
            color: var(--text-lighter);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px 24px;
            font-size: 0.9rem;
            color: var(--text-mid);
            line-height: 1.8;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 56px 0;
            text-align: center;
            border-radius: var(--radius-lg);
            margin: 0 24px;
        }

        .cta-section .cta-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px 0;
        }

        .cta-section .cta-desc {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 0 24px 0;
            line-height: 1.6;
        }

        .btn-cta-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .btn-cta-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            color: var(--primary-dark);
        }

        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            border: 2px solid rgba(255, 255, 255, 0.6);
            cursor: pointer;
            text-decoration: none;
            margin-left: 12px;
        }

        .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 48px 0 24px 0;
            margin-top: var(--section-gap);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin: 0 0 12px 0;
            letter-spacing: 0.02em;
        }

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

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

        .footer-col ul li a {
            color: #94A3B8;
            font-size: 0.9rem;
            transition: color var(--transition);
        }

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

        .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.8rem;
            color: #94A3B8;
            align-items: center;
            justify-content: space-between;
        }

        .footer-bottom a {
            color: #94A3B8;
        }

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

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .card-grid.cols-3,
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero .container {
                flex-direction: column;
                text-align: center;
            }
            .hero-main-card {
                max-width: 100%;
            }
            .hero-text-block h1 {
                font-size: 2rem;
            }
            .hero-countdown-wrap {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-item {
                flex-direction: column;
            }
            .article-thumb {
                width: 100%;
                height: 180px;
            }
            .process-list {
                flex-direction: column;
            }
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid.cols-3,
            .card-grid.cols-4 {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero {
                min-height: 360px;
            }
            .hero-text-block h1 {
                font-size: 1.7rem;
            }
            .hero-main-card {
                padding: 20px 18px;
            }
            .hero-main-card h3 {
                font-size: 1.1rem;
            }
            .countdown-item {
                padding: 6px 10px;
                min-width: 42px;
            }
            .countdown-item .count-num {
                font-size: 1.2rem;
            }
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                padding: 80px 24px 24px;
                gap: 8px;
                box-shadow: -4px 0 20px rgba(0, 0, 0, 0.12);
                transition: right var(--transition);
                z-index: 999;
                align-items: stretch;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links li a {
                display: block;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .hamburger {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .cta-section {
                margin: 0 12px;
                padding: 40px 16px;
            }
            .cta-section .cta-title {
                font-size: 1.4rem;
            }
            .btn-cta-outline {
                margin-left: 0;
                margin-top: 12px;
            }
            .section {
                padding: 40px 0;
            }
            .process-list {
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-text-block h1 {
                font-size: 1.4rem;
            }
            .hero-flash-badge {
                font-size: 0.75rem;
                padding: 8px 16px;
            }
            .countdown-item {
                padding: 5px 8px;
                min-width: 36px;
            }
            .countdown-item .count-num {
                font-size: 1rem;
            }
            .countdown-item .count-label {
                font-size: 0.6rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-num {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .article-item {
                padding: 14px 16px;
            }
            .article-thumb {
                height: 140px;
            }
            .card {
                padding: 20px 16px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2C7BE5;
            --primary-dark: #1a5db8;
            --primary-light: #E8F0FE;
            --secondary: #3B82F6;
            --bg: #F8FAFC;
            --bg-alt: #E8F0FE;
            --white: #FFFFFF;
            --text: #1E293B;
            --text-mid: #475569;
            --text-light: #64748B;
            --text-lighter: #94A3B8;
            --border: #E2E8F0;
            --success: #10B981;
            --warning: #F59E0B;
            --danger: #EF4444;
            --radius-sm: 8px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
            --section-gap: 80px;
        }

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

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

        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.8;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

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

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

        .section-gap {
            padding: var(--section-gap) 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }

        .bg-alt {
            background: var(--bg-alt);
        }

        .bg-white {
            background: var(--white);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }

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

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            font-size: 1.6rem;
            color: var(--primary);
        }

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

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

        .nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-mid);
            transition: all var(--transition);
            white-space: nowrap;
        }

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

        .nav-links li a.active {
            font-weight: 600;
        }

        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            padding: 8px 20px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
        }

        .nav-cta:hover {
            background: var(--primary-dark) !important;
            color: #fff !important;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 8px;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

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

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 440px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(44, 123, 229, 0.25) 0%, rgba(30, 41, 59, 0.6) 100%);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .hero-content {
            color: #fff;
        }

        .hero-content h1 {
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .hero-content h1 span {
            color: #FFD54F;
        }

        .hero-content .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 520px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            text-decoration: none;
            white-space: nowrap;
        }

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

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

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.7);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
        }

        .hero-visual {
            display: flex;
            flex-direction: column;
            gap: 16px;
            align-items: flex-end;
        }

        .hero-stat-card {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-radius: var(--radius);
            padding: 20px 24px;
            color: #fff;
            text-align: center;
            min-width: 180px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .hero-stat-card .stat-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: #FFD54F;
            line-height: 1;
        }

        .hero-stat-card .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.85);
            margin-top: 6px;
        }

        .hero-stat-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ========== CARDS ========== */
        .card {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

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

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

        .card-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-body p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
        }

        .card-link {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }

        .card-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        .card-link i {
            font-size: 0.8rem;
        }

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

        .service-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 32px 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            text-align: center;
            border: 1px solid transparent;
        }

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

        .service-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.6rem;
            color: var(--primary);
            transition: all var(--transition);
        }

        .service-card:hover .service-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .service-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }

        .stat-item {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 20px;
            box-shadow: var(--shadow-sm);
        }

        .stat-item .stat-num {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 6px;
        }

        .stat-item .stat-desc {
            font-size: 0.9rem;
            color: var(--text-light);
        }

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

        .case-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

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

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

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

        .case-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .case-card .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            padding: 3px 10px;
            border-radius: 50px;
            font-weight: 500;
            margin-bottom: 8px;
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .deep-content.reverse {
            direction: rtl;
        }

        .deep-content.reverse>* {
            direction: ltr;
        }

        .deep-content .content-text h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .deep-content .content-text p {
            font-size: 1rem;
            color: var(--text-mid);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        .deep-content .content-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .deep-content .content-img img {
            width: 100%;
            height: auto;
            display: block;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 16px 0;
        }

        .feature-list li {
            padding: 8px 0 8px 28px;
            position: relative;
            font-size: 0.95rem;
            color: var(--text-mid);
            line-height: 1.6;
        }

        .feature-list li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 10px;
            color: var(--success);
            font-size: 0.85rem;
        }

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

        .news-item {
            background: var(--white);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: all var(--transition);
            border-left: 3px solid transparent;
        }

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

        .news-date {
            flex-shrink: 0;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 6px 14px;
            border-radius: 50px;
            white-space: nowrap;
            text-align: center;
            min-width: 80px;
        }

        .news-body {
            flex: 1;
        }

        .news-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 8px;
        }

        .news-body .read-more {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-body .read-more:hover {
            color: var(--primary-dark);
        }

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

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

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

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            text-align: left;
            line-height: 1.5;
            transition: color var(--transition);
        }

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

        .faq-question .faq-icon {
            font-size: 1rem;
            color: var(--text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-mid);
            line-height: 1.8;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            text-align: center;
            padding: 60px 0;
            border-radius: var(--radius-lg);
            margin: 0 24px;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 24px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-primary {
            background: #fff;
            color: var(--primary);
            font-size: 1.05rem;
            padding: 14px 36px;
        }

        .cta-section .btn-primary:hover {
            background: #f0f4ff;
            color: var(--primary-dark);
        }

        /* ========== CONTACT FORM ========== */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .contact-form {
            background: var(--white);
            border-radius: var(--radius);
            padding: 32px;
            box-shadow: var(--shadow);
        }

        .contact-form label {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text);
            margin-bottom: 6px;
            display: block;
        }

        .contact-form input,
        .contact-form textarea {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 0.95rem;
            color: var(--text);
            transition: all var(--transition);
            background: var(--bg);
            margin-bottom: 16px;
            font-family: inherit;
        }

        .contact-form input:focus,
        .contact-form textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(44, 123, 229, 0.12);
            background: #fff;
        }

        .contact-form textarea {
            min-height: 120px;
            resize: vertical;
        }

        .contact-form .btn-submit {
            width: 100%;
            padding: 14px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition);
        }

        .contact-form .btn-submit:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-hover);
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .contact-info-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .contact-info-card .info-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .contact-info-card .info-text {
            font-size: 0.95rem;
            color: var(--text-mid);
            line-height: 1.5;
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            max-width: 900px;
            margin: 0 auto;
        }

        .brand-intro h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            text-align: center;
        }

        .brand-intro p {
            font-size: 1rem;
            color: var(--text-mid);
            line-height: 2;
            text-align: justify;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 48px 0 24px;
            margin-top: var(--section-gap);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

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

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

        .footer-col ul li a {
            color: #94A3B8;
            font-size: 0.9rem;
            transition: color var(--transition);
        }

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

        .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
            display: block;
            margin-bottom: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: #94A3B8;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom a {
            color: #94A3B8;
        }

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

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 56px;
            }

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

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

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

            .deep-content {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .deep-content.reverse {
                direction: ltr;
            }

            .hero .container {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .hero-content .hero-desc {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }

            .hero-buttons {
                justify-content: center;
            }

            .hero-visual {
                align-items: center;
            }

            .hero-stat-row {
                justify-content: center;
            }

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

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

        @media (max-width: 768px) {
            :root {
                --section-gap: 40px;
                --nav-height: 56px;
            }

            .hamburger {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                padding: 80px 24px 24px;
                gap: 8px;
                box-shadow: var(--shadow-lg);
                transition: right var(--transition);
                z-index: 1000;
                align-items: flex-start;
            }

            .nav-links.open {
                right: 0;
            }

            .nav-links li a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
            }

            .nav-cta {
                text-align: center;
                width: 100%;
            }

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

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

            .stats-row {
                grid-template-columns: 1fr 1fr;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .hero {
                min-height: 360px;
            }

            .hero-content h1 {
                font-size: 2rem;
            }

            .hero-stat-row {
                flex-direction: column;
                align-items: center;
            }

            .hero-stat-card {
                min-width: 140px;
            }

            .news-item {
                flex-direction: column;
                gap: 10px;
            }

            .cta-section {
                margin: 0 12px;
                padding: 40px 20px;
            }

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

            .contact-form {
                padding: 20px;
            }

            .brand-intro {
                padding: 24px;
            }

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

            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.7rem;
            }

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

            .btn {
                padding: 12px 24px;
                font-size: 0.95rem;
            }

            .stats-row {
                grid-template-columns: 1fr;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .card-body h3 {
                font-size: 1.05rem;
            }

            .hero-stat-card .stat-number {
                font-size: 1.6rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2C7BE5;
            --primary-dark: #1a5db8;
            --primary-light: #E8F0FE;
            --secondary: #3B82F6;
            --bg: #F8FAFC;
            --bg-alt: #E8F0FE;
            --white: #FFFFFF;
            --text: #1E293B;
            --text-mid: #475569;
            --text-light: #64748B;
            --text-lighter: #94A3B8;
            --border: #E2E8F0;
            --success: #10B981;
            --warning: #F59E0B;
            --danger: #EF4444;
            --radius-sm: 8px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
            --section-gap: 80px;
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 40px;
                --nav-height: 56px;
            }
        }

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

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

        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.8;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

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

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }

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

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            font-size: 1.6rem;
            color: var(--primary);
        }

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

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

        .nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-mid);
            transition: all var(--transition);
            white-space: nowrap;
        }

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

        .nav-links li a.active {
            font-weight: 600;
        }

        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            padding: 8px 20px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
        }

        .nav-cta:hover {
            background: var(--primary-dark) !important;
            color: #fff !important;
        }

        /* 汉堡菜单 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 8px;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

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

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 460px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(44, 123, 229, 0.25) 0%, rgba(30, 41, 59, 0.6) 100%);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }

        .hero-content {
            flex: 1;
            min-width: 280px;
            color: #fff;
        }

        .hero-content h1 {
            font-size: 2.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .hero-content h1 span {
            color: #FFD166;
        }

        .hero-content .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 28px;
            line-height: 1.7;
            max-width: 540px;
        }

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

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(44, 123, 229, 0.35);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(44, 123, 229, 0.45);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.7);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
        }

        .hero-visual {
            flex: 0 0 340px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            text-align: center;
        }

        .hero-visual .stat-big {
            font-size: 3rem;
            font-weight: 700;
            color: #FFD166;
            line-height: 1;
        }

        .hero-visual .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.85);
            margin-top: 6px;
        }

        .hero-visual .stat-row {
            display: flex;
            justify-content: space-around;
            margin-top: 20px;
            gap: 12px;
        }

        .hero-visual .stat-item {
            text-align: center;
        }

        .hero-visual .stat-item .num {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
        }

        .hero-visual .stat-item .lbl {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.7);
        }

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

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

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

        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: -0.02em;
        }

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

        /* ========== 课程卡片 ========== */
        .course-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .course-card {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .course-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .course-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .course-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: #fff;
            padding: 5px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            z-index: 2;
        }

        .course-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .course-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .course-card .card-body p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }

        .course-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-lighter);
            margin-bottom: 14px;
        }

        .course-card .card-meta i {
            color: var(--primary);
            margin-right: 4px;
        }

        .btn-sm {
            display: inline-block;
            padding: 9px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            border: none;
            background: var(--primary-light);
            color: var(--primary);
            align-self: flex-start;
        }

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

        /* ========== 流程 ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-step {
            text-align: center;
            position: relative;
            background: var(--white);
            border-radius: var(--radius);
            padding: 32px 20px 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

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

        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .process-step h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        .process-connector {
            display: none;
        }

        /* ========== 场景卡片 ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .scenario-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 28px 28px 80px;
            box-shadow: var(--shadow);
            position: relative;
            transition: all var(--transition);
            border-left: 4px solid transparent;
            min-height: 140px;
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            border-left-color: var(--primary);
            transform: translateX(4px);
        }

        .scenario-card .sc-icon {
            position: absolute;
            left: 22px;
            top: 28px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--primary);
        }

        .scenario-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .scenario-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ========== 新闻列表 ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            background: var(--white);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: flex-start;
            gap: 20px;
            transition: all var(--transition);
            border-left: 3px solid transparent;
        }

        .news-item:hover {
            box-shadow: var(--shadow);
            border-left-color: var(--primary);
        }

        .news-date {
            flex: 0 0 70px;
            text-align: center;
            background: var(--primary-light);
            border-radius: var(--radius-sm);
            padding: 10px 8px;
            font-weight: 700;
            color: var(--primary);
            font-size: 0.85rem;
            line-height: 1.3;
        }

        .news-date .day {
            font-size: 1.5rem;
            display: block;
        }

        .news-info {
            flex: 1;
        }

        .news-info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-info p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 8px;
        }

        .news-info .read-more {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-info .read-more i {
            transition: transform var(--transition);
        }

        .news-info .read-more:hover i {
            transform: translateX(4px);
        }

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

        .faq-item {
            background: var(--white);
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

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

        .faq-question {
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: var(--white);
            border: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition);
            user-select: none;
        }

        .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-mid);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            text-align: center;
            padding: 60px 0;
            border-radius: var(--radius-lg);
            margin: var(--section-gap) 0;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-section .btn {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        .cta-section .btn:hover {
            background: #f0f4ff;
            color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.25);
        }

        /* ========== 联系表单 ========== */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .contact-info h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }

        .contact-info .info-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
            font-size: 0.95rem;
            color: var(--text-mid);
        }

        .contact-info .info-item i {
            color: var(--primary);
            margin-top: 3px;
            flex-shrink: 0;
        }

        .contact-form {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
        }

        .contact-form label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text);
            margin-bottom: 4px;
            display: block;
        }

        .contact-form input,
        .contact-form textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            font-size: 0.95rem;
            transition: all var(--transition);
            background: var(--bg);
            margin-bottom: 16px;
            outline: none;
        }

        .contact-form input:focus,
        .contact-form textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(44, 123, 229, 0.12);
            background: #fff;
        }

        .contact-form textarea {
            min-height: 120px;
            resize: vertical;
        }

        .contact-form .btn-submit {
            width: 100%;
            padding: 13px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            background: var(--primary);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
        }

        .contact-form .btn-submit:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 48px 0 0;
            margin-top: var(--section-gap);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 4px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

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

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

        .footer-col ul li a {
            color: #94A3B8;
            font-size: 0.9rem;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 20px;
            padding: 20px 0 24px;
            font-size: 0.85rem;
            color: #94A3B8;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom a {
            color: #94A3B8;
            text-decoration: none;
        }

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

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .course-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero .container {
                flex-direction: column;
                text-align: center;
            }
            .hero-content .hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 400px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                padding: 80px 24px 40px;
                gap: 0;
                box-shadow: -4px 0 20px rgba(0, 0, 0, 0.12);
                transition: right var(--transition);
                z-index: 999;
                overflow-y: auto;
            }
            .nav-links.active {
                right: 0;
            }
            .nav-links li a {
                display: block;
                padding: 14px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .nav-cta {
                text-align: center;
                margin-top: 8px;
            }
            .hamburger {
                display: flex;
            }
            .course-grid {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
            }
            .process-steps {
                grid-template-columns: 1fr;
                max-width: 360px;
                margin: 0 auto;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .scenario-card {
                padding: 22px 20px 22px 68px;
            }
            .scenario-card .sc-icon {
                left: 14px;
                top: 22px;
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
            .news-item {
                flex-direction: column;
                gap: 10px;
                padding: 16px;
            }
            .news-date {
                flex: 0 0 auto;
                display: inline-flex;
                align-items: center;
                gap: 6px;
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .news-date .day {
                font-size: 1.1rem;
                display: inline;
            }
            .hero {
                min-height: 380px;
            }
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-content .hero-subtitle {
                font-size: 1rem;
            }
            .hero-visual {
                padding: 20px;
                max-width: 100%;
            }
            .hero-visual .stat-big {
                font-size: 2.2rem;
            }
            .hero-visual .stat-row .num {
                font-size: 1.3rem;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 4px;
                font-size: 0.8rem;
            }
            .contact-form {
                padding: 20px;
            }
        }

        @media (max-width: 520px) {
            .hero {
                min-height: 340px;
            }
            .hero-content h1 {
                font-size: 1.4rem;
            }
            .hero-buttons {
                flex-direction: column;
                gap: 10px;
            }
            .hero-buttons .btn {
                width: 100%;
                text-align: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .section-title h2 {
                font-size: 1.4rem;
            }
            .btn {
                padding: 10px 22px;
                font-size: 0.9rem;
            }
            .container {
                padding: 0 16px;
            }
            .scenario-card {
                padding: 18px 16px 18px 60px;
            }
            .scenario-card .sc-icon {
                left: 10px;
                top: 18px;
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #2C7BE5;
            --primary-dark: #1a5db8;
            --primary-light: #E8F0FE;
            --secondary: #3B82F6;
            --bg: #F8FAFC;
            --bg-alt: #E8F0FE;
            --white: #FFFFFF;
            --text: #1E293B;
            --text-mid: #475569;
            --text-light: #64748B;
            --text-lighter: #94A3B8;
            --border: #E2E8F0;
            --success: #10B981;
            --warning: #F59E0B;
            --danger: #EF4444;
            --radius-sm: 8px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
            --section-gap: 80px;
        }

        @media (max-width: 1024px) {
            :root {
                --section-gap: 56px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 40px;
                --nav-height: 56px;
            }
        }

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

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

        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.8;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

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

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

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

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

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            font-weight: 600;
            line-height: 1.3;
            color: var(--text);
        }

        h1 {
            font-size: 2.5rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2rem;
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
        }

        p {
            margin-top: 0;
            margin-bottom: 1rem;
            color: var(--text-mid);
            max-width: 720px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }

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

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            font-size: 1.6rem;
            color: var(--primary);
        }

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

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

        .nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-mid);
            transition: all var(--transition);
            white-space: nowrap;
        }

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

        .nav-links li a.active {
            font-weight: 600;
        }

        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            padding: 8px 20px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
        }

        .nav-cta:hover {
            background: var(--primary-dark) !important;
            color: #fff !important;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 8px;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

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

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== HERO - 优惠券墙 ========== */
        .hero-coupon {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 60px 0;
        }

        .hero-coupon::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(44, 123, 229, 0.18) 0%, rgba(30, 41, 59, 0.6) 60%, rgba(15, 23, 42, 0.75) 100%);
            z-index: 1;
        }

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

        .coupon-wall {
            display: flex;
            align-items: stretch;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .coupon-main {
            flex: 1 1 420px;
            max-width: 520px;
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            box-shadow: var(--shadow-lg);
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            border: 3px dashed var(--primary);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .coupon-main:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 48px rgba(44, 123, 229, 0.18);
        }

        .coupon-main .coupon-badge {
            position: absolute;
            top: -16px;
            right: 28px;
            background: var(--danger);
            color: #fff;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: 0.04em;
            box-shadow: 0 4px 14px rgba(239, 68, 68, 0.35);
            z-index: 3;
        }

        .coupon-main .coupon-icon {
            font-size: 3rem;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .coupon-main h2 {
            font-size: 1.8rem;
            margin-bottom: 4px;
            color: var(--text);
        }

        .coupon-main .coupon-subtitle {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-bottom: 16px;
        }

        .coupon-main .coupon-features {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .coupon-main .coupon-features li {
            font-size: 0.85rem;
            color: var(--text-mid);
            background: var(--bg-alt);
            padding: 4px 12px;
            border-radius: 50px;
            font-weight: 500;
        }

        .coupon-main .coupon-score {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 18px;
        }

        .coupon-main .score-stars {
            color: #F59E0B;
            font-size: 1.2rem;
            letter-spacing: 2px;
        }

        .coupon-main .score-num {
            font-weight: 700;
            font-size: 2rem;
            color: var(--primary);
            line-height: 1;
        }

        .coupon-main .score-label {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        .btn-coupon-main {
            display: inline-block;
            background: var(--primary);
            color: #fff !important;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 32px;
            border-radius: 50px;
            text-align: center;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 18px rgba(44, 123, 229, 0.3);
            letter-spacing: 0.02em;
        }

        .btn-coupon-main:hover {
            background: var(--primary-dark);
            box-shadow: 0 10px 28px rgba(44, 123, 229, 0.4);
            transform: translateY(-2px);
            color: #fff !important;
        }

        .coupon-side {
            flex: 1 1 280px;
            max-width: 340px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            justify-content: center;
        }

        .coupon-mini {
            background: rgba(255, 255, 255, 0.94);
            border-radius: var(--radius);
            padding: 18px 20px;
            box-shadow: var(--shadow);
            cursor: pointer;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 14px;
            border: 1px solid transparent;
        }

        .coupon-mini:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
            background: #fff;
        }

        .coupon-mini .mini-icon {
            font-size: 2rem;
            color: var(--primary);
            flex-shrink: 0;
        }

        .coupon-mini .mini-info h4 {
            margin: 0 0 2px;
            font-size: 1rem;
            color: var(--text);
        }

        .coupon-mini .mini-info span {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        .coupon-mini .mini-arrow {
            margin-left: auto;
            color: var(--primary);
            font-size: 1.1rem;
            transition: transform var(--transition);
        }

        .coupon-mini:hover .mini-arrow {
            transform: translateX(3px);
        }

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

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

        .section-header {
            margin-bottom: 40px;
        }

        .section-header h2 {
            margin-bottom: 8px;
        }

        .section-header .section-subtitle {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 600px;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.82rem;
            padding: 5px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        /* ========== 评测亮点卡片 ========== */
        .highlight-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }

        .highlight-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid transparent;
            text-align: left;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

        .highlight-card .hl-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .highlight-card h3 {
            font-size: 1.2rem;
            margin-bottom: 0;
        }

        .highlight-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== 评测列表 ========== */
        .review-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .review-item {
            background: var(--white);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: flex-start;
            gap: 20px;
            transition: all var(--transition);
            border-left: 4px solid transparent;
            flex-wrap: wrap;
        }

        .review-item:hover {
            box-shadow: var(--shadow-hover);
            border-left-color: var(--primary);
        }

        .review-date {
            flex-shrink: 0;
            text-align: center;
            min-width: 60px;
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            padding: 10px 8px;
            line-height: 1.2;
        }

        .review-date .day {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            display: block;
        }

        .review-date .month {
            font-size: 0.78rem;
            color: var(--text-light);
            display: block;
        }

        .review-content {
            flex: 1;
            min-width: 220px;
        }

        .review-content h4 {
            margin: 0 0 6px;
            font-size: 1.1rem;
            color: var(--text);
        }

        .review-content .review-meta {
            font-size: 0.8rem;
            color: var(--text-lighter);
            margin-bottom: 6px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .review-content .review-excerpt {
            font-size: 0.9rem;
            color: var(--text-mid);
            margin: 0;
            line-height: 1.6;
        }

        .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            margin-top: 8px;
            transition: all var(--transition);
        }

        .btn-read-more i {
            transition: transform var(--transition);
            font-size: 0.8rem;
        }

        .btn-read-more:hover {
            color: var(--primary-dark);
        }
        .btn-read-more:hover i {
            transform: translateX(4px);
        }

        .review-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 50px;
            background: var(--primary-light);
            color: var(--primary);
            margin-right: 6px;
        }

        /* ========== 评测流程 ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            counter-reset: step;
        }

        .process-step {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow);
            position: relative;
            transition: all var(--transition);
            counter-increment: step;
        }

        .process-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .process-step .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: 700;
            font-size: 1.3rem;
            margin-bottom: 14px;
        }

        .process-step h4 {
            margin-bottom: 6px;
            font-size: 1rem;
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin: 0;
            line-height: 1.5;
        }

        /* ========== 数据展示 ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            text-align: center;
        }

        .stat-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 20px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-hover);
        }

        .stat-card .stat-num {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 6px;
        }

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

        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 8px;
            opacity: 0.7;
        }

        /* ========== 推荐装备卡片 ========== */
        .gear-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .gear-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .gear-card .gear-img-wrap {
            position: relative;
            height: 200px;
            overflow: hidden;
            background: #f1f5f9;
        }

        .gear-card .gear-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .gear-card .gear-rating {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(0, 0, 0, 0.7);
            color: #FFD700;
            padding: 4px 10px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
        }

        .gear-card .gear-body {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .gear-card .gear-body h4 {
            margin: 0;
            font-size: 1.05rem;
        }

        .gear-card .gear-body .gear-price {
            font-weight: 700;
            color: var(--primary);
            font-size: 1.2rem;
        }

        .gear-card .gear-body .gear-price .original {
            text-decoration: line-through;
            color: var(--text-lighter);
            font-size: 0.85rem;
            margin-left: 6px;
            font-weight: 400;
        }

        .gear-card .gear-body p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin: 0;
            line-height: 1.5;
        }

        .gear-card .btn-gear {
            align-self: flex-start;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.85rem;
            padding: 8px 18px;
            border-radius: 50px;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            display: inline-block;
        }

        .gear-card .btn-gear:hover {
            background: var(--primary-dark);
            color: #fff;
        }

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

        .faq-item {
            background: var(--white);
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

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

        .faq-question {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            transition: color var(--transition);
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
        }

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

        .faq-question i {
            transition: transform var(--transition);
            color: var(--primary);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-mid);
            margin: 0;
            line-height: 1.7;
        }

        /* ========== CTA区域 ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #1a5db8 100%);
            padding: 60px 0;
            text-align: center;
            color: #fff;
        }

        .cta-section h2 {
            color: #fff;
            margin-bottom: 8px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            margin: 0 auto 28px;
            max-width: 560px;
            font-size: 1.05rem;
        }

        .cta-section .btn-cta-large {
            display: inline-block;
            background: #fff;
            color: var(--primary) !important;
            font-weight: 700;
            font-size: 1.1rem;
            padding: 14px 36px;
            border-radius: 50px;
            transition: all var(--transition);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            letter-spacing: 0.02em;
        }

        .cta-section .btn-cta-large:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 32px rgba(0, 0, 0, 0.22);
            background: #f0f4ff;
        }

        /* ========== 联系表单 ========== */
        .contact-form-wrap {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow);
            max-width: 640px;
            margin: 0 auto;
        }

        .contact-form-wrap input,
        .contact-form-wrap textarea {
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            padding: 12px 16px;
            font-size: 0.95rem;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
            font-family: inherit;
        }

        .contact-form-wrap input:focus,
        .contact-form-wrap textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(44, 123, 229, 0.1);
            outline: none;
        }

        .contact-form-wrap label {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-mid);
            margin-bottom: 4px;
            display: block;
        }

        .btn-submit {
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            padding: 13px 32px;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            width: 100%;
            letter-spacing: 0.02em;
        }

        .btn-submit:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 18px rgba(44, 123, 229, 0.3);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 48px 0 28px;
            font-size: 0.9rem;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 12px;
            font-weight: 600;
        }

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

        .site-footer ul li {
            margin-bottom: 6px;
        }

        .site-footer ul li a {
            color: #94A3B8;
            font-size: 0.88rem;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: #94A3B8;
        }

        .footer-bottom a {
            color: #94A3B8;
        }

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

        .footer-bottom span {
            white-space: nowrap;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .coupon-wall {
                flex-direction: column;
                align-items: center;
            }
            .coupon-main {
                max-width: 100%;
                flex: 1 1 auto;
            }
            .coupon-side {
                flex-direction: row;
                flex-wrap: wrap;
                max-width: 100%;
                flex: 1 1 auto;
                justify-content: center;
            }
            .coupon-mini {
                flex: 1 1 200px;
                max-width: 240px;
            }
            .hero-coupon {
                min-height: auto;
                padding: 40px 0;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px;
                gap: 2px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition);
                z-index: 999;
                border-bottom: 2px solid var(--border);
                max-height: 80vh;
                overflow-y: auto;
            }
            .nav-links.show {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-links li a {
                display: block;
                padding: 10px 16px;
                font-size: 1rem;
            }
            .hamburger {
                display: flex;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .coupon-main {
                padding: 24px 20px;
            }
            .coupon-main h2 {
                font-size: 1.3rem;
            }
            .coupon-side {
                flex-direction: column;
                gap: 10px;
                max-width: 100%;
            }
            .coupon-mini {
                max-width: 100%;
                flex: 1 1 auto;
            }
            .review-item {
                flex-direction: column;
                gap: 10px;
            }
            .review-date {
                flex-direction: row;
                gap: 6px;
                align-items: center;
                min-width: auto;
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .review-date .day {
                font-size: 1.1rem;
                display: inline;
            }
            .review-date .month {
                display: inline;
            }
            .section {
                padding: var(--section-gap) 0;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            h1 {
                font-size: 1.5rem;
            }
            h2 {
                font-size: 1.25rem;
            }
            .hero-coupon {
                padding: 24px 0;
                min-height: auto;
            }
            .coupon-main {
                padding: 18px 16px;
                border-radius: var(--radius);
            }
            .coupon-main .coupon-badge {
                top: -10px;
                right: 12px;
                font-size: 0.7rem;
                padding: 4px 10px;
            }
            .coupon-main h2 {
                font-size: 1.15rem;
            }
            .btn-coupon-main {
                font-size: 0.9rem;
                padding: 12px 24px;
                width: 100%;
                text-align: center;
            }
            .highlight-grid {
                grid-template-columns: 1fr;
            }
            .gear-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
            }
            .stat-card .stat-num {
                font-size: 2rem;
            }
            .contact-form-wrap {
                padding: 20px 16px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #2C7BE5;
            --primary-dark: #1a5db8;
            --primary-light: #E8F0FE;
            --secondary: #3B82F6;
            --bg: #F8FAFC;
            --bg-alt: #E8F0FE;
            --white: #FFFFFF;
            --text: #1E293B;
            --text-mid: #475569;
            --text-light: #64748B;
            --text-lighter: #94A3B8;
            --border: #E2E8F0;
            --success: #10B981;
            --warning: #F59E0B;
            --danger: #EF4444;
            --radius-sm: 8px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
            --section-gap: 80px;
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 40px;
                --nav-height: 56px;
            }
        }

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

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

        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.8;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

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

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }

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

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            font-size: 1.6rem;
            color: var(--primary);
        }

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

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

        .nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-mid);
            transition: all var(--transition);
            white-space: nowrap;
        }

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

        .nav-links li a.active {
            font-weight: 600;
        }

        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            padding: 8px 20px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
        }

        .nav-cta:hover {
            background: var(--primary-dark) !important;
            color: #fff !important;
        }

        /* 汉堡菜单 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 8px;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

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

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== HERO - 无大图首屏 图标矩阵+状态条 ========== */
        .hero {
            position: relative;
            background: linear-gradient(160deg, #E8F0FE 0%, #F0F4FB 30%, #F8FAFC 100%);
            min-height: 380px;
            display: flex;
            align-items: center;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 28px;
            padding-top: 40px;
            padding-bottom: 40px;
        }

        .hero-icon-matrix {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .hero-icon-item {
            width: 72px;
            height: 72px;
            border-radius: var(--radius);
            background: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            font-size: 1.6rem;
            color: var(--primary);
        }

        .hero-icon-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            color: var(--primary-dark);
        }

        .hero-status-bar {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            justify-content: center;
            background: var(--white);
            border-radius: 50px;
            padding: 12px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .hero-status-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-mid);
            font-weight: 500;
        }

        .hero-status-item i {
            color: var(--success);
            font-size: 0.75rem;
        }

        .hero-status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
            }
        }

        .hero-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.03em;
            line-height: 1.3;
            max-width: 700px;
        }

        .hero-title span {
            color: var(--primary);
        }

        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            line-height: 1.7;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            font-size: 0.875rem;
            color: var(--text-light);
            flex-wrap: wrap;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li a {
            color: var(--text-light);
            transition: color var(--transition);
        }

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

        .breadcrumb li:last-child {
            color: var(--text);
            font-weight: 600;
        }

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

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

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

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

        .section-header h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: -0.02em;
        }

        .section-header p {
            color: var(--text-light);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }

        /* ========== 简介区域 ========== */
        .intro-block {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            max-width: 900px;
            margin: 0 auto;
            line-height: 2;
            font-size: 1.02rem;
            color: var(--text-mid);
        }

        .intro-block strong {
            color: var(--primary);
            font-weight: 600;
        }

        .intro-block p+p {
            margin-top: 16px;
        }

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

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

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

        .news-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            background: var(--bg-alt);
        }

        .news-card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .news-card-date {
            font-size: 0.8rem;
            color: var(--text-lighter);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .news-card-date i {
            font-size: 0.7rem;
        }

        .news-card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-title a {
            color: var(--text);
            transition: color var(--transition);
        }

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

        .news-card-excerpt {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .news-card-link i {
            font-size: 0.7rem;
            transition: transform var(--transition);
        }

        .news-card-link:hover {
            color: var(--primary-dark);
        }

        .news-card-link:hover i {
            transform: translateX(4px);
        }

        /* ========== 趋势数据快报 ========== */
        .trend-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .trend-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .trend-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
        }

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

        .trend-card .trend-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .trend-card .trend-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .trend-card .trend-label {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 6px;
        }

        .trend-card .trend-change {
            font-size: 0.8rem;
            font-weight: 600;
            margin-top: 4px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .trend-up {
            color: var(--success);
        }

        .trend-down {
            color: var(--danger);
        }

        /* ========== 深度分析精选 ========== */
        .featured-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

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

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

        .featured-card-img {
            width: 100%;
            height: 240px;
            object-fit: cover;
            display: block;
        }

        .featured-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .featured-card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 50px;
            align-self: flex-start;
        }

        .featured-card-title {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
        }

        .featured-card-excerpt {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
        }

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

        .featured-card-link:hover {
            color: var(--primary-dark);
        }

        .featured-card-link i {
            transition: transform var(--transition);
        }

        .featured-card-link:hover i {
            transform: translateX(4px);
        }

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

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

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

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 28px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-align: left;
            line-height: 1.5;
            transition: all var(--transition);
            font-family: inherit;
        }

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

        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-lighter);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 16px;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 28px 20px;
            font-size: 0.95rem;
            color: var(--text-mid);
            line-height: 1.8;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.9;
            max-width: 550px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            text-decoration: none;
            font-family: inherit;
        }

        .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }

        .btn-primary:hover {
            background: #f0f4ff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
            color: var(--primary-dark);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }

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

        .btn-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }

        /* ========== 联系表单 ========== */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .contact-form-wrap {
            background: var(--white);
            border-radius: var(--radius);
            padding: 32px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .contact-form-wrap .form-group {
            margin-bottom: 18px;
        }

        .contact-form-wrap label {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-mid);
            margin-bottom: 6px;
        }

        .contact-form-wrap input,
        .contact-form-wrap textarea {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: all var(--transition);
            background: var(--bg);
            color: var(--text);
        }

        .contact-form-wrap input:focus,
        .contact-form-wrap textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(44, 123, 229, 0.1);
            background: var(--white);
        }

        .contact-form-wrap textarea {
            min-height: 120px;
            resize: vertical;
        }

        .btn-submit {
            width: 100%;
            background: var(--primary);
            color: #fff;
            padding: 14px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            font-family: inherit;
        }

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

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .contact-info-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: var(--white);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .contact-info-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
        }

        .contact-info-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .contact-info-text h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 2px;
        }

        .contact-info-text p {
            font-size: 0.875rem;
            color: var(--text-light);
            line-height: 1.5;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 48px 0 0;
            margin-top: var(--section-gap);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: #CBD5E1;
            font-size: 0.9rem;
            transition: all var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.8rem;
            color: #94A3B8;
            align-items: center;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom a {
            color: #94A3B8;
            transition: color var(--transition);
        }

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

        .footer-bottom span {
            white-space: nowrap;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .trend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-status-bar {
                gap: 16px;
                padding: 10px 20px;
                border-radius: 30px;
            }
            .hero-status-item {
                font-size: 0.8rem;
            }
            .intro-block {
                padding: 28px 24px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                padding: 80px 24px 40px;
                box-shadow: -4px 0 24px rgba(0, 0, 0, 0.12);
                transition: right var(--transition);
                z-index: 1000;
                gap: 8px;
                align-items: stretch;
                overflow-y: auto;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links li a {
                display: block;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav-cta {
                text-align: center;
                border-radius: var(--radius-sm) !important;
                margin-top: 8px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .trend-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero {
                min-height: 300px;
            }
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-icon-item {
                width: 54px;
                height: 54px;
                font-size: 1.2rem;
            }
            .hero-status-bar {
                flex-wrap: wrap;
                gap: 10px;
                padding: 10px 16px;
                border-radius: 24px;
            }
            .hero-status-item {
                font-size: 0.75rem;
            }
            .section {
                padding: 40px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .intro-block {
                padding: 20px 18px;
                font-size: 0.9rem;
                border-radius: var(--radius);
            }
            .cta-section {
                padding: 36px 24px;
                border-radius: var(--radius);
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .btn {
                padding: 10px 22px;
                font-size: 0.9rem;
            }
            .featured-card-img {
                height: 180px;
            }
            .news-card-img {
                height: 160px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .contact-form-wrap {
                padding: 20px;
            }
            .faq-question {
                padding: 16px 20px;
                font-size: 0.9rem;
            }
            .faq-answer-inner {
                padding: 0 20px 16px;
            }
        }

        @media (max-width: 520px) {
            .trend-grid {
                grid-template-columns: 1fr;
            }
            .hero-icon-matrix {
                gap: 12px;
            }
            .hero-icon-item {
                width: 48px;
                height: 48px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .hero-status-bar {
                flex-direction: column;
                align-items: center;
                gap: 6px;
                border-radius: 20px;
                padding: 10px 18px;
            }
            .hero-title {
                font-size: 1.3rem;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }