/* ---------- 全局重置与变量 ---------- */
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --mint-50: #f2faf7;
            --mint-100: #e3f5ed;
            --mint-200: #c7ebdd;
            --mint-300: #9fdbc5;
            --mint-400: #6fc7a8;
            --mint-500: #47b18b;
            --mint-600: #358f70;
            --mint-700: #2b725a;
            --mint-800: #265c4a;
            --mint-900: #1f4b3e;
            --text-dark: #1a2e28;
            --text-body: #2e4a40;
            --text-muted: #5a736a;
            --bg-page: #f7fcf9;
            --bg-white: #ffffff;
            --bg-soft: #eef8f3;
            --shadow-sm: 0 1px 3px rgba(26, 46, 40, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 46, 40, 0.08);
            --shadow-lg: 0 12px 40px rgba(26, 46, 40, 0.10);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-page);
            color: var(--text-body);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        /* ---------- 通用容器 ---------- */
        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ---------- 排版 ---------- */
        h1 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-dark);
        }

        h2 {
            font-size: 1.65rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-dark);
        }

        h3 {
            font-size: 1.15rem;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-dark);
        }

        p {
            font-size: 0.95rem;
            color: var(--text-body);
        }

        a {
            text-decoration: none;
            color: var(--mint-600);
            transition: color var(--transition-base);
        }

        a:hover {
            color: var(--mint-700);
        }

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

        ul {
            list-style: none;
        }

        /* ---------- 按钮 ---------- */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            font-family: var(--font-sans);
            cursor: pointer;
            border: 2px solid transparent;
            transition: all var(--transition-base);
            white-space: nowrap;
            line-height: 1.4;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--mint-500), var(--mint-600));
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 14px rgba(71, 177, 139, 0.3);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, var(--mint-600), var(--mint-700));
            box-shadow: 0 6px 20px rgba(71, 177, 139, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline {
            background: transparent;
            color: var(--mint-700);
            border-color: var(--mint-400);
        }

        .btn-outline:hover {
            background: var(--mint-100);
            border-color: var(--mint-500);
            color: var(--mint-800);
            transform: translateY(-2px);
        }

        /* ---------- 顶部导航 ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(247, 252, 249, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--mint-100);
            transition: box-shadow var(--transition-base);
        }

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

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 64px;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-area .ai-page-logo {
            width: 40px;
            height: 40px;
            object-fit: contain;
            border-radius: var(--radius-sm);
        }

        .brand-name {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: 0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0;
            flex-wrap: wrap;
        }

        .nav-links a {
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-body);
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--mint-700);
            background: var(--mint-100);
        }

        .nav-cta {
            flex-shrink: 0;
            margin-left: 12px;
        }

        .nav-cta .btn {
            padding: 9px 22px;
            font-size: 0.88rem;
        }

        /* 移动菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: transparent;
            border: 1.5px solid var(--mint-300);
            border-radius: var(--radius-sm);
            cursor: pointer;
            padding: 8px;
            transition: border-color var(--transition-base);
        }

        .menu-toggle span {
            display: block;
            height: 2px;
            width: 100%;
            background: var(--mint-700);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

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

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

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

        /* ---------- Hero 区域（无图片） ---------- */
        .hero {
            position: relative;
            overflow: hidden;
            background: linear-gradient(160deg, var(--mint-50) 0%, #ffffff 45%, var(--mint-100) 100%);
            padding: 72px 0 64px;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 520px;
            height: 520px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(111, 199, 168, 0.16) 0%, transparent 70%);
            top: -180px;
            right: -120px;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(71, 177, 139, 0.10) 0%, transparent 70%);
            bottom: -140px;
            left: -100px;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 28px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: var(--mint-100);
            border: 1px solid var(--mint-200);
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--mint-700);
            animation: fadeInUp 0.6s ease both;
        }

        .hero-badge .dot {
            width: 7px;
            height: 7px;
            background: var(--mint-500);
            border-radius: 50%;
            animation: pulse 2s infinite;
        }

        .hero h1 {
            max-width: 820px;
            font-size: 2.4rem;
            letter-spacing: -0.5px;
            animation: fadeInUp 0.6s 0.1s ease both;
        }

        .hero h1 .highlight {
            color: var(--mint-600);
            position: relative;
            display: inline-block;
        }

        .hero h1 .highlight::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 2px;
            width: 100%;
            height: 8px;
            background: var(--mint-200);
            border-radius: 4px;
            z-index: -1;
        }

        .hero-desc {
            max-width: 680px;
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.75;
            animation: fadeInUp 0.6s 0.2s ease both;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
            animation: fadeInUp 0.6s 0.3s ease both;
        }

        .hero-actions .btn {
            padding: 14px 36px;
            font-size: 1rem;
        }

        .hero-stats {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
            width: 100%;
            max-width: 880px;
            padding-top: 12px;
            animation: fadeInUp 0.6s 0.4s ease both;
        }

        .hero-stat-item {
            flex: 1 1 140px;
            background: var(--bg-white);
            border: 1px solid var(--mint-200);
            border-radius: var(--radius-md);
            padding: 18px 12px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .hero-stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .hero-stat-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--mint-600);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ---------- 通用 section 样式 ---------- */
        .section {
            padding: 64px 0;
        }

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

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 40px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--mint-600);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-header h2 {
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* ---------- 卡片通用 ---------- */
        .card {
            background: var(--bg-white);
            border: 1px solid var(--mint-100);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--mint-300);
        }

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--mint-100);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 16px;
            color: var(--mint-600);
        }

        .card h3 {
            margin-bottom: 8px;
        }

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

        /* ---------- 网格布局 ---------- */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        /* ---------- 关于我们 ---------- */
        .about-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: stretch;
        }

        .about-text {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .about-text h2 {
            margin-bottom: 0;
        }

        .about-text p {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.75;
        }

        .about-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 8px;
        }

        .tag {
            padding: 6px 16px;
            background: var(--mint-100);
            border: 1px solid var(--mint-200);
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--mint-700);
            transition: all var(--transition-base);
        }

        .tag:hover {
            background: var(--mint-200);
            border-color: var(--mint-300);
        }

        .about-highlight-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .about-highlight-item {
            background: var(--bg-white);
            border: 1px solid var(--mint-100);
            border-radius: var(--radius-md);
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

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

        .about-highlight-item .number {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--mint-500);
            line-height: 1;
        }

        .about-highlight-item .label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ---------- 服务能力 ---------- */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .service-item {
            background: var(--bg-white);
            border: 1px solid var(--mint-100);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .service-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--mint-300);
        }

        .service-emoji {
            font-size: 1.8rem;
            margin-bottom: 12px;
        }

        .service-item h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }

        .service-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ---------- 流程步骤 ---------- */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-white);
            border: 1px solid var(--mint-100);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            position: relative;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

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

        .step-card .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--mint-500), var(--mint-600));
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            margin-bottom: 16px;
        }

        .step-card h3 {
            font-size: 1rem;
            margin-bottom: 6px;
        }

        .step-card p {
            font-size: 0.86rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ---------- 对比表格 ---------- */
        .table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-md);
            border: 1px solid var(--mint-100);
            background: var(--bg-white);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
            min-width: 640px;
        }

        .compare-table thead {
            background: var(--mint-50);
        }

        .compare-table th {
            padding: 16px 18px;
            text-align: left;
            font-weight: 700;
            color: var(--text-dark);
            border-bottom: 2px solid var(--mint-200);
            font-size: 0.88rem;
        }

        .compare-table th:first-child {
            border-radius: var(--radius-sm) 0 0 0;
        }

        .compare-table td {
            padding: 14px 18px;
            border-bottom: 1px solid var(--mint-100);
            color: var(--text-body);
            vertical-align: middle;
        }

        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }

        .compare-table tbody tr:hover {
            background: var(--mint-50);
        }

        .compare-table .star-rating {
            color: #f5a623;
            font-size: 1rem;
            letter-spacing: 2px;
        }

        .compare-table .score {
            font-weight: 800;
            color: var(--mint-600);
            font-size: 1.05rem;
        }

        /* ---------- 价格参考 ---------- */
        .price-card {
            background: var(--bg-white);
            border: 1px solid var(--mint-100);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

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

        .price-card .price-name {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .price-card .price-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--mint-600);
            line-height: 1.2;
        }

        .price-card .price-value small {
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
        }

        .price-card .price-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* ---------- FAQ ---------- */
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--mint-100);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .faq-item.active {
            border-color: var(--mint-300);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 18px 22px;
            background: transparent;
            border: none;
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            cursor: pointer;
            transition: background var(--transition-base);
        }

        .faq-question:hover {
            background: var(--mint-50);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--mint-100);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--mint-600);
            transition: transform var(--transition-base), background var(--transition-base);
        }

        .faq-item.active .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--mint-500);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }

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

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

        /* ---------- 用户评论 ---------- */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .review-card {
            background: var(--bg-white);
            border: 1px solid var(--mint-100);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 14px;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

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

        .review-stars {
            color: #f5a623;
            font-size: 0.9rem;
            letter-spacing: 2px;
        }

        .review-text {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.7;
            flex: 1;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--mint-100);
        }

        .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--mint-200);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--mint-800);
            flex-shrink: 0;
        }

        .review-name {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-dark);
        }

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

        /* ---------- 案例展示 ---------- */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .case-card {
            background: var(--bg-white);
            border: 1px solid var(--mint-100);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

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

        .case-img-wrap {
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--mint-50);
        }

        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .case-card:hover .case-img-wrap img {
            transform: scale(1.04);
        }

        .case-info {
            padding: 20px 22px;
        }

        .case-info h3 {
            font-size: 1rem;
            margin-bottom: 6px;
        }

        .case-info p {
            font-size: 0.86rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .case-tag {
            display: inline-block;
            margin-top: 10px;
            padding: 4px 12px;
            background: var(--mint-100);
            border-radius: 50px;
            font-size: 0.76rem;
            font-weight: 600;
            color: var(--mint-700);
        }

        /* ---------- 文章列表 ---------- */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            border: 1px solid var(--mint-100);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-white);
        }

        .article-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            border-bottom: 1px solid var(--mint-100);
            transition: background var(--transition-base);
        }

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

        .article-item:hover {
            background: var(--mint-50);
        }

        .article-item .article-title {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-dark);
            flex: 1;
        }

        .article-item .article-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--mint-600);
            flex-shrink: 0;
            transition: color var(--transition-base);
        }

        .article-item .article-link:hover {
            color: var(--mint-800);
        }

        /* ---------- 表单 ---------- */
        .form-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }

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

        .form-info h2 {
            margin-bottom: 0;
        }

        .contact-method {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px;
            background: var(--bg-white);
            border: 1px solid var(--mint-100);
            border-radius: var(--radius-md);
            transition: box-shadow var(--transition-base);
        }

        .contact-method:hover {
            box-shadow: var(--shadow-sm);
        }

        .contact-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--mint-100);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .contact-method h3 {
            font-size: 0.9rem;
            margin-bottom: 2px;
        }

        .contact-method p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .contact-method a {
            font-weight: 600;
        }

        .qr-wrap {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px;
            background: var(--bg-white);
            border: 1px solid var(--mint-100);
            border-radius: var(--radius-md);
        }

        .qr-wrap img {
            width: 80px;
            height: 80px;
            object-fit: contain;
            border-radius: var(--radius-sm);
            border: 1px solid var(--mint-100);
        }

        .qr-wrap p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .form-card {
            background: var(--bg-white);
            border: 1px solid var(--mint-100);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-md);
        }

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

        .form-group label {
            display: block;
            font-size: 0.86rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .form-group label .required {
            color: #e05a5a;
            margin-left: 2px;
        }

        .form-control {
            width: 100%;
            padding: 11px 14px;
            font-size: 0.9rem;
            font-family: var(--font-sans);
            color: var(--text-dark);
            background: var(--bg-page);
            border: 1.5px solid var(--mint-200);
            border-radius: var(--radius-sm);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
            outline: none;
        }

        .form-control:focus {
            border-color: var(--mint-500);
            box-shadow: 0 0 0 3px rgba(71, 177, 139, 0.12);
            background: #fff;
        }

        .form-control::placeholder {
            color: #9bb5aa;
        }

        textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }

        select.form-control {
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%235a736a' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
        }

        .form-submit {
            width: 100%;
            margin-top: 6px;
        }

        /* ---------- 友情链接 ---------- */
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .friend-links a {
            padding: 6px 16px;
            background: var(--bg-white);
            border: 1px solid var(--mint-100);
            border-radius: 50px;
            font-size: 0.82rem;
            color: var(--text-muted);
            transition: all var(--transition-base);
        }

        .friend-links a:hover {
            border-color: var(--mint-400);
            color: var(--mint-700);
            background: var(--mint-50);
        }

        /* ---------- 底部 ---------- */
        .site-footer {
            background: var(--mint-800);
            color: #e3f5ed;
            padding: 48px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .footer-brand .brand-name {
            color: #ffffff;
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 0.86rem;
            color: #b8dccd;
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h3 {
            color: #ffffff;
            font-size: 0.95rem;
            margin-bottom: 14px;
        }

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

        .footer-col a {
            color: #b8dccd;
            font-size: 0.86rem;
            transition: color var(--transition-base);
        }

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

        .footer-col p {
            color: #b8dccd;
            font-size: 0.86rem;
            line-height: 1.7;
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 0.8rem;
            color: #9ec9b8;
        }

        .footer-bottom a {
            color: #c7ebdd;
        }

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

        /* ---------- 浮动客服 ---------- */
        .float-service {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 900;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 1.5px solid var(--mint-200);
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            cursor: pointer;
            transition: all var(--transition-base);
            color: var(--mint-600);
            text-decoration: none;
        }

        .float-btn:hover {
            background: var(--mint-500);
            border-color: var(--mint-500);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(71, 177, 139, 0.35);
        }

        .float-btn.qr-btn {
            position: relative;
        }

        .float-qr-pop {
            position: absolute;
            right: 58px;
            bottom: 0;
            background: var(--bg-white);
            border: 1px solid var(--mint-200);
            border-radius: var(--radius-md);
            padding: 12px;
            box-shadow: var(--shadow-lg);
            opacity: 0;
            visibility: hidden;
            transition: all 0.25s ease;
            pointer-events: none;
        }

        .float-qr-pop img {
            width: 120px;
            height: 120px;
            object-fit: contain;
        }

        .float-btn.qr-btn:hover .float-qr-pop,
        .float-btn.qr-btn:focus .float-qr-pop {
            opacity: 1;
            visibility: visible;
        }

        /* 返回顶部 */
        .back-to-top {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 900;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--mint-500);
            color: #fff;
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all var(--transition-base);
        }

        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-to-top:hover {
            background: var(--mint-600);
            transform: translateY(-3px);
        }

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

        @keyframes pulse {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(0.85);
            }
        }

        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ---------- 响应式 ---------- */
        @media (max-width: 1024px) {
            .nav-links a {
                padding: 6px 9px;
                font-size: 0.82rem;
            }

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

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

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

        @media (max-width: 900px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(247, 252, 249, 0.98);
                backdrop-filter: blur(14px);
                -webkit-backdrop-filter: blur(14px);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 20px 20px;
                border-bottom: 1px solid var(--mint-100);
                box-shadow: var(--shadow-md);
                gap: 2px;
                z-index: 999;
            }

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

            .nav-links a {
                padding: 10px 14px;
                font-size: 0.9rem;
            }

            .menu-toggle {
                display: flex;
            }

            .nav-cta {
                display: none;
            }

            .hero h1 {
                font-size: 1.75rem;
            }

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

            .about-layout {
                grid-template-columns: 1fr;
            }

            .form-layout {
                grid-template-columns: 1fr;
            }

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

        @media (max-width: 640px) {
            .hero {
                padding: 48px 0 40px;
            }

            .hero h1 {
                font-size: 1.5rem;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
                max-width: 320px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .hero-stats {
                gap: 8px;
            }

            .hero-stat-item {
                flex: 1 1 calc(50% - 8px);
                padding: 14px 10px;
            }

            .hero-stat-num {
                font-size: 1.25rem;
            }

            .service-grid,
            .reviews-grid,
            .case-grid,
            .steps-row {
                grid-template-columns: 1fr;
            }

            .section {
                padding: 48px 0;
            }

            .section-header {
                margin-bottom: 28px;
            }

            .about-highlight-grid {
                grid-template-columns: 1fr;
            }

            .form-card {
                padding: 24px 18px;
            }

            .float-service {
                right: 12px;
                bottom: 72px;
            }

            .back-to-top {
                right: 12px;
                bottom: 16px;
            }

            .article-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                padding: 14px 18px;
            }

            .compare-table {
                font-size: 0.82rem;
            }

            .compare-table th,
            .compare-table td {
                padding: 10px 12px;
            }
        }