/* ===== CSS Reset & 基础变量 ===== */
        *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
        :root {
            --primary: #1e3a8a;
            --primary-light: #2563eb;
            --primary-dark: #1e2d5f;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --text-dark: #1f2937;
            --text-gray: #6b7280;
            --text-light: #9ca3af;
            --bg-white: #ffffff;
            --bg-light: #f8fafc;
            --bg-gray: #f1f5f9;
            --border: #e5e7eb;
            --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
            --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
            --radius: 8px;
            --radius-lg: 12px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: "Microsoft YaHei", "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            color: var(--text-dark);
            line-height: 1.7;
            background: var(--bg-white);
            overflow-x: hidden;
        }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

        /* 顶栏+导航总高度由 JS 写入，避免顶栏换行时压住下面导航 */
        :root { --header-offset: 104px; }

        /* ===== 顶部：咨询条 + 主导航（同一固定块，绝不互相遮挡） ===== */
        .header {
            position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
            background: transparent;
            transition: var(--transition);
        }
        .header.scrolled .header-main { box-shadow: var(--shadow); }
        .site-topbar {
            background: #0f172a; color: #cbd5e1; text-align: center;
            display: flex; align-items: center; justify-content: center;
            flex-wrap: wrap; gap: 4px 10px;
            padding: calc(6px + env(safe-area-inset-top, 0px)) 12px 8px;
            font-size: 12px; line-height: 1.45;
        }
        @media (min-width: 769px) {
            .site-topbar { font-size: 13px; padding-left: 16px; padding-right: 16px; }
        }
        .site-topbar a { color: #fbbf24; font-weight: 600; white-space: nowrap; }
        .topbar-short { display: none !important; }
        @media (max-width: 768px) {
            .topbar-long { display: none !important; }
            .topbar-short { display: inline !important; }
        }
        .header-main {
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(10px);
            box-shadow: 0 1px 3px rgba(0,0,0,0.08);
        }
        .header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 70px;
        }
        .logo { display: flex; align-items: center; gap: 10px; }
        .logo-icon {
            width: 42px; height: 42px; background: var(--primary);
            border-radius: var(--radius); display: flex; align-items: center;
            justify-content: center; color: #fff; font-weight: 700; font-size: 18px;
        }
        .logo-text h1, .logo-text .site-title-text { font-size: 18px; color: var(--primary); line-height: 1.2; font-weight: 700; display: block; }
        .logo-text span { font-size: 11px; color: var(--text-light); letter-spacing: 1px; }

        .nav-links { display: flex; gap: 6px; align-items: center; }
        .nav-links a {
            padding: 8px 14px; font-size: 14px; color: var(--text-dark);
            border-radius: 6px; font-weight: 500; position: relative;
        }
        .nav-links a:hover, .nav-links a.active {
            color: var(--primary); background: rgba(30,58,138,0.06);
        }
        .nav-cta {
            background: var(--primary) !important; color: #fff !important;
            border-radius: 20px !important; padding: 8px 20px !important;
        }
        .nav-cta:hover { background: var(--primary-light) !important; }

        .mobile-toggle {
            display: none; background: none; border: none; font-size: 24px;
            color: var(--primary); cursor: pointer; padding: 5px;
        }

        /* ===== 面包屑导航 ===== */
        .breadcrumb {
            padding: 12px 0; font-size: 13px; color: var(--text-light);
        }
        .breadcrumb a { color: var(--primary-light); }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb span { margin: 0 6px; }

        /* ===== 通用模块样式 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-light); }
        .section-header { text-align: center; margin-bottom: 50px; }
        .section-header h2 {
            font-size: 32px; color: var(--primary-dark); margin-bottom: 12px;
            position: relative; display: inline-block;
        }
        .section-header h2::after {
            content: ''; position: absolute; bottom: -8px; left: 50%; transform: translateX(-50%);
            width: 50px; height: 3px; background: var(--accent); border-radius: 2px;
        }
        .section-header p { color: var(--text-gray); font-size: 16px; margin-top: 18px; max-width: 600px; margin-left: auto; margin-right: auto; }

        /* ===== Banner 首屏 ===== */
        .hero {
            position: relative; min-height: 100vh; display: flex; align-items: center;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, #0f172a 100%);
            overflow: hidden; padding-top: var(--header-offset, 104px);
        }
        .hero::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            opacity: 1;
        }
        .hero-content {
            position: relative; z-index: 2; max-width: 700px;
        }
        .hero-badge {
            display: inline-block; background: rgba(245,158,11,0.15);
            color: var(--accent); font-size: 13px; padding: 6px 16px;
            border-radius: 20px; margin-bottom: 20px; font-weight: 500;
            border: 1px solid rgba(245,158,11,0.3);
        }
        .hero h2 {
            font-size: 46px; color: #fff; line-height: 1.3; margin-bottom: 20px; font-weight: 700;
        }
        .hero h2 em {
            font-style: normal; color: var(--accent);
            background: linear-gradient(135deg, var(--accent), #fbbf24);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 17px; color: rgba(255,255,255,0.8); margin-bottom: 35px;
            line-height: 1.8;
        }
        .hero-desc-secondary {
            font-size: 15px !important; color: rgba(255,255,255,0.75) !important;
            margin-top: -20px !important; margin-bottom: 28px !important;
            line-height: 1.75;
        }
        .hero-actions { display: flex; gap: 15px; flex-wrap: wrap; }
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 14px 32px; border-radius: 28px; font-size: 15px;
            font-weight: 600; cursor: pointer; border: none;
            transition: var(--transition); text-align: center;
        }
        .btn-primary {
            background: var(--accent); color: #fff;
            box-shadow: 0 4px 15px rgba(245,158,11,0.4);
        }
        .btn-primary:hover {
            background: var(--accent-hover); transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245,158,11,0.5);
        }
        .btn-outline {
            background: transparent; color: #fff;
            border: 2px solid rgba(255,255,255,0.4);
        }
        .btn-outline:hover {
            border-color: #fff; background: rgba(255,255,255,0.1);
        }
        .hero-stats {
            display: flex; gap: 40px; margin-top: 50px;
            padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.15);
        }
        .hero-stat h3 { font-size: 36px; color: var(--accent); font-weight: 700; }
        .hero-stat p { font-size: 13px; color: rgba(255,255,255,0.6); margin-top: 4px; }
        .hero-float {
            position: absolute; right: 0; top: 50%; transform: translateY(-50%);
            width: 45%; max-width: 500px; z-index: 2;
        }
        .hero-card {
            background: rgba(255,255,255,0.08); backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.12); border-radius: 20px;
            padding: 40px; color: #fff;
        }
        .hero-card h3 { font-size: 20px; margin-bottom: 25px; font-weight: 600; }
        .hero-card-item {
            display: flex; align-items: center; gap: 15px;
            padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .hero-card-item:last-child { border-bottom: none; }
        .hero-card-icon {
            width: 44px; height: 44px; border-radius: 10px;
            background: rgba(245,158,11,0.15); display: flex;
            align-items: center; justify-content: center;
            color: var(--accent); font-size: 18px; flex-shrink: 0;
        }
        .hero-card-item h4 { font-size: 15px; font-weight: 600; }
        .hero-card-item p { font-size: 12px; color: rgba(255,255,255,0.5); margin-top: 2px; }

        /* ===== 核心服务概览（5 张卡片：首行 3 个，次行 2 个居中） ===== */
        .services-overview {
            display: flex; flex-wrap: wrap; justify-content: center; gap: 24px;
        }
        .service-card {
            flex: 0 0 calc((100% - 48px) / 3);
            max-width: 340px;
            background: var(--bg-white); border: 1px solid var(--border);
            border-radius: var(--radius-lg); padding: 35px 25px;
            text-align: center; transition: var(--transition);
            position: relative; overflow: hidden;
        }
        .service-card::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0;
            height: 3px; background: var(--primary); transform: scaleX(0);
            transition: transform 0.3s ease; transform-origin: center;
        }
        .service-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-xl); }
        .service-card:hover::before { transform: scaleX(1); }
        .service-icon {
            width: 64px; height: 64px; border-radius: 16px;
            background: linear-gradient(135deg, rgba(30,58,138,0.08), rgba(37,99,235,0.12));
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 20px; font-size: 26px; color: var(--primary);
        }
        .service-card h3 { font-size: 18px; margin-bottom: 10px; color: var(--primary-dark); }
        .service-card p { font-size: 14px; color: var(--text-gray); line-height: 1.6; margin-bottom: 15px; }
        .service-link {
            font-size: 13px; color: var(--primary-light); font-weight: 500;
            display: inline-flex; align-items: center; gap: 4px;
        }
        .service-link:hover { gap: 8px; }

        /* ===== 精选案例展示（首页） ===== */
        .featured-cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .case-card {
            border-radius: var(--radius-lg); overflow: hidden;
            box-shadow: var(--shadow); transition: var(--transition);
            background: var(--bg-white);
        }
        .case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-xl); }
        .case-thumb {
            height: 220px; display: flex; align-items: center; justify-content: center;
            font-size: 14px; color: #fff; position: relative; overflow: hidden;
        }
        .case-thumb-1 { background: linear-gradient(135deg, #667eea, #764ba2); }
        .case-thumb-2 { background: linear-gradient(135deg, #f093fb, #f5576c); }
        .case-thumb-3 { background: linear-gradient(135deg, #4facfe, #00f2fe); }
        .case-thumb span {
            position: relative; z-index: 2; background: rgba(0,0,0,0.2);
            padding: 8px 16px; border-radius: 6px; font-size: 13px;
        }
        .case-info { padding: 24px; }
        .case-tag {
            display: inline-block; background: rgba(30,58,138,0.08);
            color: var(--primary); font-size: 12px; padding: 3px 10px;
            border-radius: 4px; margin-bottom: 10px;
        }
        .case-info h3 { font-size: 17px; margin-bottom: 8px; font-weight: 600; }
        .case-info p { font-size: 14px; color: var(--text-gray); margin-bottom: 15px; }
        .case-result {
            display: flex; gap: 20px; padding-top: 12px;
            border-top: 1px solid var(--border);
        }
        .case-result-item strong { font-size: 20px; color: var(--primary); display: block; }
        .case-result-item span { font-size: 12px; color: var(--text-light); }

        /* ===== 信任背书 ===== */
        .trust-section { background: var(--bg-gray); padding: 50px 0; }
        .trust-clients {
            display: grid; grid-template-columns: repeat(2, 1fr);
            gap: 20px 28px; margin-bottom: 30px; max-width: 960px; margin-left: auto; margin-right: auto;
        }
        .trust-client-card {
            background: var(--bg-white); border: 1px solid var(--border);
            border-radius: var(--radius); padding: 18px 20px;
            text-align: left; transition: var(--transition);
        }
        .trust-client-card:hover { box-shadow: var(--shadow); border-color: var(--primary-light); }
        .trust-client-name { font-size: 15px; font-weight: 600; color: var(--primary-dark); margin-bottom: 6px; }
        .trust-client-years { font-size: 12px; color: var(--text-light); margin-bottom: 8px; }
        .trust-client-desc { font-size: 13px; color: var(--text-gray); line-height: 1.6; }
        .trust-logos { display: none; }
        .trust-logo { width: 120px; height: 50px; background: var(--bg-white);
            border: 1px solid var(--border); border-radius: var(--radius);
            display: flex; align-items: center; justify-content: center;
            font-size: 12px; color: var(--text-light); transition: var(--transition);
        }
        .trust-logo:hover { box-shadow: var(--shadow); border-color: var(--primary-light); }
        .trust-tags {
            display: flex; justify-content: center; gap: 12px; flex-wrap: wrap;
        }
        .trust-tag {
            display: inline-flex; align-items: center; gap: 6px;
            background: var(--bg-white); padding: 8px 18px;
            border-radius: 20px; font-size: 13px; color: var(--text-dark);
            border: 1px solid var(--border);
        }
        .trust-tag i { color: var(--accent); }

        /* ===== 关于我们 ===== */
        .about-grid {
            display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
            align-items: center; margin-bottom: 60px;
        }
        .about-img {
            height: 380px; background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-lg); display: flex; align-items: center;
            justify-content: center; color: #fff; font-size: 14px;
            position: relative; overflow: hidden;
        }
        .about-img img {
            width: 100%; height: 100%; object-fit: cover; display: block;
        }
        .about-img::after {
            content: ''; position: absolute; bottom: -30px; right: -30px;
            width: 120px; height: 120px; border: 3px solid rgba(255,255,255,0.15);
            border-radius: 50%;
        }
        .about-content h3 {
            font-size: 26px; color: var(--primary-dark); margin-bottom: 15px;
        }
        .about-content > p {
            color: var(--text-gray); margin-bottom: 20px; line-height: 1.8;
        }
        .about-features {
            display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 25px;
        }
        .about-feature {
            display: flex; align-items: flex-start; gap: 12px; padding: 12px;
            background: var(--bg-light); border-radius: var(--radius);
        }
        .about-feature i {
            color: var(--primary); font-size: 18px; margin-top: 2px; flex-shrink: 0;
        }
        .about-feature h4 { font-size: 14px; font-weight: 600; margin-bottom: 2px; }
        .about-feature p { font-size: 13px; color: var(--text-gray); }

        /* 发展历程 */
        .timeline {
            display: flex; gap: 0; position: relative; margin: 40px 0;
            padding: 30px 0;
        }
        .timeline::before {
            content: ''; position: absolute; top: 24px; left: 0; right: 0;
            height: 2px; background: var(--border);
        }
        .timeline-item {
            flex: 1; text-align: center; position: relative; padding-top: 50px;
        }
        .timeline-dot {
            width: 12px; height: 12px; background: var(--primary);
            border-radius: 50%; position: absolute; top: 24px; left: 50%;
            transform: translate(-50%, -50%); z-index: 2;
            border: 3px solid var(--bg-white); box-shadow: 0 0 0 2px var(--primary);
        }
        .timeline-item h4 { font-size: 20px; color: var(--primary); margin-bottom: 4px; margin-top: 0; }
        .timeline-item p { font-size: 13px; color: var(--text-gray); }

        /* 团队风采 */
        .team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .team-card {
            text-align: center; background: var(--bg-white);
            border: 1px solid var(--border); border-radius: var(--radius-lg);
            padding: 30px 20px; transition: var(--transition);
        }
        .team-card:hover { box-shadow: var(--shadow-lg); }
        .team-avatar {
            width: 90px; height: 90px; border-radius: 50%;
            background: linear-gradient(135deg, var(--bg-gray), var(--border));
            margin: 0 auto 15px; display: flex; align-items: center;
            justify-content: center; font-size: 12px; color: var(--text-light);
        }
        .team-card h4 { font-size: 16px; margin-bottom: 4px; }
        .team-card .role { font-size: 13px; color: var(--primary-light); margin-bottom: 8px; }
        .team-card p { font-size: 13px; color: var(--text-gray); }

        /* 资质荣誉 - 证书纵向展示（PNG 专利/商标证） */
        .honor-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
            justify-items: center;
        }
        .honor-item {
            background: var(--bg-light); border: 1px solid var(--border);
            border-radius: var(--radius); padding: 16px; text-align: center;
            max-width: 200px; margin: 0 auto;
        }
        .honor-item .img-wrap {
            width: 100%; aspect-ratio: 3/4; margin: 0 auto 12px;
            display: flex; align-items: center; justify-content: center;
            overflow: hidden; border-radius: var(--radius);
        }
        .honor-item .img-wrap img {
            width: auto; height: 100%; object-fit: contain; object-position: center;
        }
        /* 证书照片若为横向拍摄，旋转 90° 为纵向便于阅读 */
        .honor-item .img-wrap img.cert-portrait {
            width: 100%; height: auto; object-fit: contain;
            transform: rotate(0deg);
        }
        .honor-item h4 { font-size: 14px; margin-bottom: 4px; font-weight: 600; }
        .honor-item p { font-size: 12px; color: var(--text-gray); }

        /* ===== 服务详情页 ===== */
        .service-detail { padding: 60px 0; }
        .service-detail:nth-child(even) { background: var(--bg-light); }
        .service-detail-header {
            display: flex; align-items: center; gap: 20px; margin-bottom: 35px;
        }
        .service-detail-icon {
            width: 56px; height: 56px; border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex; align-items: center; justify-content: center;
            color: #fff; font-size: 24px; flex-shrink: 0;
        }
        .service-detail-header div h3 { font-size: 24px; color: var(--primary-dark); }
        .service-detail-header div p { font-size: 14px; color: var(--text-gray); margin-top: 4px; }

        .service-detail-grid {
            display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
        }
        .service-intro h4 { font-size: 17px; margin-bottom: 12px; color: var(--text-dark); }
        .service-intro p { color: var(--text-gray); line-height: 1.8; margin-bottom: 15px; }
        .service-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
        .service-tags span {
            background: rgba(30,58,138,0.06); color: var(--primary);
            padding: 5px 14px; border-radius: 15px; font-size: 13px;
        }

        .service-process { margin-top: 30px; }
        .process-steps {
            display: flex; gap: 20px; margin-top: 20px; flex-wrap: nowrap;
            justify-content: space-between;
        }
        .process-step {
            flex: 1;
            min-width: 0;
            text-align: center;
            position: relative; padding: 20px 8px;
        }
        .step-num {
            width: 36px; height: 36px; border-radius: 50%;
            background: var(--primary); color: #fff; font-size: 14px;
            font-weight: 700; display: flex; align-items: center;
            justify-content: center; margin: 0 auto 10px;
        }
        .process-step h5 { font-size: 14px; margin-bottom: 4px; }
        .process-step p { font-size: 12px; color: var(--text-gray); }

        .service-price {
            margin-top: 20px; padding: 16px 20px;
            background: rgba(245,158,11,0.06); border-left: 3px solid var(--accent);
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .service-price strong { color: var(--accent); }

        .service-scene {
            margin-top: 20px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
        }
        .scene-item {
            display: flex; align-items: center; gap: 8px;
            font-size: 14px; color: var(--text-gray);
        }
        .scene-item i { color: var(--primary-light); font-size: 12px; }

        .service-faq { margin-top: 25px; }
        .service-faq-item {
            padding: 12px 0; border-bottom: 1px solid var(--border);
        }
        .service-faq-item strong { font-size: 14px; color: var(--text-dark); display: block; margin-bottom: 4px; }
        .service-faq-item p { font-size: 13px; color: var(--text-gray); }

        .btn-consult {
            display: inline-flex; align-items: center; gap: 8px;
            margin-top: 20px; padding: 10px 24px;
            background: var(--primary); color: #fff;
            border-radius: 20px; font-size: 14px; font-weight: 500;
            border: none; cursor: pointer; transition: var(--transition);
        }
        .btn-consult:hover { background: var(--primary-light); transform: translateY(-1px); }

        /* ===== 案例展示详情 ===== */
        .case-filters {
            display: flex; justify-content: center; gap: 10px;
            margin-bottom: 40px; flex-wrap: wrap;
        }
        .case-filter {
            padding: 8px 20px; border-radius: 20px; font-size: 14px;
            background: var(--bg-white); border: 1px solid var(--border);
            cursor: pointer; transition: var(--transition);
        }
        .case-filter:hover, .case-filter.active {
            background: var(--primary); color: #fff; border-color: var(--primary);
        }
        .case-detail-card {
            background: var(--bg-white); border: 1px solid var(--border);
            border-radius: var(--radius-lg); overflow: hidden;
            margin-bottom: 30px;
        }
        .case-detail-top {
            display: grid; grid-template-columns: 1fr 1fr; gap: 0;
        }
        .case-detail-img {
            min-height: 280px; display: flex; align-items: center;
            justify-content: center; color: #666; font-size: 14px;
            position: relative; overflow: hidden;
            background: var(--bg-light);
        }
        .case-detail-img img {
            position: relative; z-index: 1;
            width: 100%; height: 100%; min-height: 280px; object-fit: cover; display: block;
        }
        .case-detail-img-1 { background: linear-gradient(135deg, #e8e8e8, #d0d0d0); }
        .case-detail-img-2 { background: linear-gradient(135deg, #e0e0e0, #c8c8c8); }
        .case-detail-img-3 { background: linear-gradient(135deg, #d8d8d8, #d0d0d0); }
        .case-detail-img-4 { background: linear-gradient(135deg, #e0e0e0, #d8d8d8); }
        .case-detail-text { padding: 35px; }
        .case-detail-text h3 { font-size: 22px; margin-bottom: 15px; color: var(--primary-dark); }
        .case-detail-text h4 {
            font-size: 14px; color: var(--text-gray); margin-bottom: 8px;
            font-weight: 600; margin-top: 15px;
        }
        .case-detail-text p { font-size: 14px; color: var(--text-gray); line-height: 1.7; }
        .case-metrics {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px;
            margin-top: 20px;
        }
        .case-metric {
            background: var(--bg-light); padding: 15px; border-radius: var(--radius);
            text-align: center;
        }
        .case-metric strong { font-size: 22px; color: var(--primary); display: block; }
        .case-metric span { font-size: 12px; color: var(--text-gray); }
        .case-quote {
            margin-top: 20px; padding: 15px 20px;
            background: var(--bg-light); border-radius: var(--radius);
            border-left: 3px solid var(--accent); font-style: italic;
            font-size: 14px; color: var(--text-gray);
        }

        /* ===== 新闻动态 ===== */
        .news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
        .news-card {
            background: var(--bg-white); border: 1px solid var(--border);
            border-radius: var(--radius-lg); overflow: hidden;
            transition: var(--transition);
            cursor: pointer;
        }
        .news-card:hover { box-shadow: var(--shadow-lg); }
        .news-thumb {
            height: 180px; display: flex; align-items: center;
            justify-content: center; color: #fff; font-size: 14px;
            position: relative; overflow: hidden;
        }
        .news-thumb img {
            position: absolute; inset: 0; width: 100%; height: 100%;
            object-fit: cover; display: block;
        }
        .news-thumb-1 { background: linear-gradient(135deg, #1e3a8a, #3b82f6); }
        .news-thumb-2 { background: linear-gradient(135deg, #059669, #34d399); }
        .news-body { padding: 24px; }
        .news-meta { display: flex; gap: 15px; margin-bottom: 10px; }
        .news-meta span { font-size: 12px; color: var(--text-light); display: flex; align-items: center; gap: 4px; }
        .news-body h3 { font-size: 18px; margin-bottom: 10px; line-height: 1.4; }
        .news-body h3:hover { color: var(--primary); }
        .news-body p { font-size: 14px; color: var(--text-gray); line-height: 1.6; }
        .news-more {
            display: inline-flex; align-items: center; gap: 5px;
            color: var(--primary-light); font-size: 14px; margin-top: 12px;
            font-weight: 500;
        }

        /* ===== 滚动新闻条 ===== */
        .news-ticker {
            background: var(--primary-dark); color: #fff; padding: 10px 0;
            overflow: hidden; white-space: nowrap;
        }
        .news-ticker-inner {
            display: inline-block; animation: tickerScroll 30s linear infinite;
        }
        .news-ticker-item {
            display: inline-flex; align-items: center; gap: 8px;
            margin-right: 60px; font-size: 14px;
        }
        .news-ticker-item i { color: var(--accent); }
        @keyframes tickerScroll {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px; margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border); border-radius: var(--radius);
            margin-bottom: 12px; overflow: hidden; background: var(--bg-white);
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            display: flex; align-items: center; justify-content: space-between;
            padding: 18px 24px; cursor: pointer; font-size: 15px;
            font-weight: 600; color: var(--text-dark); gap: 10px;
        }
        .faq-question i {
            color: var(--primary); transition: transform 0.3s ease;
            font-size: 14px; flex-shrink: 0;
        }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 20px; font-size: 14px;
            color: var(--text-gray); line-height: 1.8;
        }
        .faq-item.active .faq-answer { max-height: 500px; }

        /* ===== 联系我们 ===== */
        .contact-grid {
            display: grid; grid-template-columns: 1fr 1fr; gap: 50px;
        }
        .contact-info-list { margin-top: 20px; }
        .contact-info-item {
            display: flex; align-items: flex-start; gap: 16px;
            padding: 18px 0; border-bottom: 1px solid var(--border);
        }
        .contact-info-icon {
            width: 46px; height: 46px; border-radius: 12px;
            background: rgba(30,58,138,0.08); display: flex;
            align-items: center; justify-content: center;
            color: var(--primary); font-size: 18px; flex-shrink: 0;
        }
        .contact-info-item h4 { font-size: 14px; color: var(--text-light); margin-bottom: 4px; font-weight: 500; }
        .contact-info-item p { font-size: 15px; font-weight: 500; }
        .contact-info-item a { color: var(--primary); }
        .contact-info-item a:hover { text-decoration: underline; }

        .contact-qr {
            margin-top: 25px; display: flex; gap: 20px;
        }
        .qr-box {
            width: 110px; text-align: center;
        }
        .qr-placeholder {
            width: 110px; height: 110px; background: var(--bg-gray);
            border: 1px solid var(--border); border-radius: var(--radius);
            display: flex; align-items: center; justify-content: center;
            font-size: 12px; color: var(--text-light); margin-bottom: 6px;
        }
        .qr-box a.qr-phone {
            display: flex; align-items: center; justify-content: center;
            width: 110px; min-height: 44px; padding: 8px;
            background: var(--bg-gray); border: 1px solid var(--border);
            border-radius: var(--radius); font-size: 12px; color: var(--text-light);
            text-decoration: none; margin-bottom: 6px;
        }
        .qr-box a.qr-phone:hover { background: var(--border); color: var(--text-dark); }
        .qr-box img.qr-img {
            width: 110px; height: 110px; object-fit: contain;
            border-radius: var(--radius); margin-bottom: 6px;
            display: block; border: 1px solid var(--border);
        }
        .qr-box span { font-size: 12px; color: var(--text-gray); }

        .contact-form {
            background: var(--bg-light); border-radius: var(--radius-lg);
            padding: 35px;
        }
        .contact-form h3 { font-size: 22px; margin-bottom: 8px; color: var(--primary-dark); }
        .contact-form > p { font-size: 14px; color: var(--text-gray); margin-bottom: 25px; }
        .form-group { margin-bottom: 18px; }
        .form-group label {
            display: block; font-size: 14px; font-weight: 500;
            margin-bottom: 6px; color: var(--text-dark);
        }
        .form-group input, .form-group select, .form-group textarea {
            width: 100%; padding: 12px 16px; border: 1px solid var(--border);
            border-radius: var(--radius); font-size: 14px;
            font-family: inherit; transition: var(--transition);
            background: var(--bg-white);
        }
        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            outline: none; border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
        }
        .form-group textarea { resize: vertical; min-height: 100px; }
        .form-submit {
            width: 100%; padding: 14px; background: var(--primary);
            color: #fff; border: none; border-radius: var(--radius);
            font-size: 16px; font-weight: 600; cursor: pointer;
            transition: var(--transition); font-family: inherit;
        }
        .form-submit:hover { background: var(--primary-light); }

        .contact-extra {
            margin-top: 20px; display: flex; gap: 15px; flex-wrap: wrap;
        }
        .contact-extra-item {
            display: flex; align-items: center; gap: 8px;
            font-size: 13px; color: var(--text-gray);
        }
        .contact-extra-item i { color: var(--primary-light); }

        /* ===== 底部 Footer ===== */
        .footer {
            background: #0f172a; color: rgba(255,255,255,0.7); padding: 60px 0 0;
        }
        .footer-grid {
            display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
            padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-brand h3 { color: #fff; font-size: 20px; margin-bottom: 12px; }
        .footer-brand p { font-size: 14px; line-height: 1.7; margin-bottom: 15px; }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 36px; height: 36px; border-radius: 50%;
            background: rgba(255,255,255,0.1); display: flex;
            align-items: center; justify-content: center;
            color: rgba(255,255,255,0.7); font-size: 16px;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; }

        .footer-col h4 {
            color: #fff; font-size: 15px; margin-bottom: 18px;
            position: relative; padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: ''; position: absolute; bottom: 0; left: 0;
            width: 24px; height: 2px; background: var(--accent);
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            font-size: 14px; color: rgba(255,255,255,0.6);
            display: flex; align-items: center; gap: 6px;
        }
        .footer-col ul li a:hover { color: var(--accent); }
        .footer-contact-item {
            display: flex; align-items: center; gap: 10px;
            margin-bottom: 12px; font-size: 14px;
        }
        .footer-contact-item i { color: var(--accent); width: 16px; text-align: center; }

        .footer-bottom {
            padding: 20px 0; text-align: center;
            font-size: 13px; color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        .footer-links {
            padding: 16px 0; margin-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 13px; color: rgba(255,255,255,0.6);
        }
        .footer-links-label { margin-right: 8px; }
        .footer-links a { color: rgba(255,255,255,0.7); }
        .footer-links a:hover { color: var(--accent); }
        .footer-links .sep { color: rgba(255,255,255,0.35); margin: 0 8px; user-select: none; }

        /* ===== 回到顶部按钮 ===== */
        .back-to-top {
            position: fixed; bottom: 30px; right: 30px;
            width: 46px; height: 46px; border-radius: 50%;
            background: var(--primary); color: #fff; border: none;
            font-size: 18px; cursor: pointer; z-index: 999;
            box-shadow: var(--shadow-lg); transition: var(--transition);
            opacity: 0; visibility: hidden; transform: translateY(10px);
        }
        .back-to-top.visible {
            opacity: 1; visibility: visible; transform: translateY(0);
        }
        .back-to-top:hover { background: var(--primary-light); transform: translateY(-3px); }

        /* ===== 悬浮联系按钮 ===== */
        .float-contact {
            position: fixed; bottom: 90px; right: 30px; z-index: 998;
            display: flex; flex-direction: column; gap: 10px;
        }
        .float-btn {
            width: 46px; height: 46px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            font-size: 18px; color: #fff; border: none; cursor: pointer;
            box-shadow: var(--shadow-lg); transition: var(--transition);
            position: relative;
        }
        .float-btn:hover { transform: scale(1.1); }
        .float-btn-phone { background: #10b981; }
        .float-btn-wechat { background: #07c160; }
        .float-btn-tooltip {
            position: absolute; right: 56px; top: 50%; transform: translateY(-50%);
            background: var(--text-dark); color: #fff; font-size: 13px;
            padding: 6px 12px; border-radius: 6px; white-space: nowrap;
            opacity: 0; visibility: hidden; transition: var(--transition);
        }
        .float-btn:hover .float-btn-tooltip { opacity: 1; visibility: visible; }

        /* 微信二维码弹窗 */
        .wechat-qr-modal {
            display: none; position: fixed; inset: 0; z-index: 9999;
            align-items: center; justify-content: center;
            background: rgba(0,0,0,0.5); padding: 20px;
        }
        .wechat-qr-modal.show { display: flex; }
        .wechat-qr-modal .modal-box {
            background: #fff; border-radius: 16px; padding: 24px;
            text-align: center; box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            position: relative; max-width: 90vw;
        }
        .wechat-qr-modal .modal-box .modal-close {
            position: absolute; right: 12px; top: 12px; width: 32px; height: 32px;
            border: none; background: var(--bg-gray); border-radius: 50%;
            cursor: pointer; font-size: 18px; line-height: 1; color: var(--text-gray);
        }
        .wechat-qr-modal .modal-box .modal-close:hover { background: var(--border); color: var(--text-dark); }
        .wechat-qr-modal .modal-box img { display: block; width: 200px; height: 200px; margin: 0 auto 12px; border-radius: 8px; }
        .wechat-qr-modal .modal-box p { margin: 0; font-size: 14px; color: var(--text-gray); }

        /* ===== 动画 ===== */
        .fade-in {
            opacity: 0; transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in.visible { opacity: 1; transform: translateY(0); }
        .fade-in-delay-1 { transition-delay: 0.1s; }
        .fade-in-delay-2 { transition-delay: 0.2s; }
        .fade-in-delay-3 { transition-delay: 0.3s; }
        .fade-in-delay-4 { transition-delay: 0.4s; }

        /* ===== 响应式：平板 ===== */
        @media (max-width: 992px) {
            .hero h2 { font-size: 34px; }
            .hero-float { display: none; }
            .hero-content { max-width: 100%; }
            .services-overview { gap: 20px; }
            .service-card { flex: 0 0 calc((100% - 20px) / 2); max-width: none; }
            .featured-cases { grid-template-columns: 1fr; }
            .about-grid { grid-template-columns: 1fr; gap: 30px; }
            .about-img { height: 260px; }
            .team-grid { grid-template-columns: repeat(2, 1fr); }
            .honor-grid { grid-template-columns: repeat(3, 1fr); }
            .honor-item { max-width: 180px; }
            .process-steps { flex-wrap: wrap; justify-content: center; }
            .process-step { flex: 0 0 calc((100% - 40px) / 3); min-width: 100px; }
            .service-detail-grid { grid-template-columns: 1fr; }
            .case-detail-top { grid-template-columns: 1fr; }
            .case-detail-img { min-height: 300px; }
            .news-grid { grid-template-columns: 1fr; }
            .contact-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        /* ===== 响应式：手机 ===== */
        @media (max-width: 768px) {
            .nav-links {
                display: none; position: fixed;
                top: var(--header-offset, 120px);
                left: 0; right: 0;
                background: var(--bg-white); flex-direction: column;
                padding: 20px; gap: 5px; box-shadow: var(--shadow-lg);
                border-top: 1px solid var(--border);
            }
            .nav-links.active { display: flex; }
            .nav-links a { padding: 12px 16px; width: 100%; }
            .mobile-toggle { display: block; }

            .hero { min-height: auto; padding: var(--header-offset, 124px) 0 60px; }
            .hero h2 { font-size: 28px; }
            .hero p { font-size: 15px; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { justify-content: center; }
            .hero-stats { gap: 20px; }
            .hero-stat h3 { font-size: 26px; }

            .section { padding: 50px 0; }
            .section-header h2 { font-size: 24px; }
            .section-header p { font-size: 14px; }

            .service-card { flex: 0 0 100%; max-width: none; }
            .team-grid { grid-template-columns: 1fr 1fr; }
            .honor-grid { grid-template-columns: repeat(2, 1fr); }
            .process-steps { flex-wrap: wrap; justify-content: center; }
            .process-step { flex: 0 0 calc((100% - 20px) / 2); min-width: 100px; }
            .timeline { flex-direction: column; gap: 20px; }
            .timeline::before { display: none; }
            .timeline-item { padding-top: 0; }
            .timeline-dot { position: static; transform: none; margin: 0 auto 10px; }
            .case-metrics { grid-template-columns: 1fr; }
            .contact-form { padding: 25px 20px; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .about-features { grid-template-columns: 1fr; }
            .service-scene { grid-template-columns: 1fr; }
            .contact-qr { flex-direction: column; align-items: center; }

            .float-contact { bottom: 70px; right: 15px; }
            .back-to-top { bottom: 20px; right: 15px; display: none; }
            .footer { padding-bottom: 60px; }
            .footer-bottom { padding-bottom: 20px; }
            .case-detail-text { padding: 20px; }
            .case-detail-text h3 { font-size: 18px; }
            .service-detail-header { flex-direction: column; text-align: center; }
            .service-price { font-size: 13px; }
            .news-body h3 { font-size: 16px; }
            .logo-text h1 { font-size: 16px; }
            .header .container { height: 60px; }
        }

        @media (max-width: 480px) {
            .hero h2 { font-size: 22px; }
            .hero p { font-size: 14px; }
            .hero-stats { flex-wrap: wrap; gap: 15px; }
            .hero-stat h3 { font-size: 22px; }
            .trust-logos { gap: 12px; }
            .trust-logo { width: 90px; height: 38px; font-size: 11px; }
            .trust-clients { grid-template-columns: 1fr; gap: 16px; }
            .section-header h2 { font-size: 21px; }
            .btn { padding: 12px 24px; font-size: 14px; }
            .contact-info-item p { font-size: 14px; }
            .honor-grid { grid-template-columns: repeat(2, 1fr); }
            .honor-item { max-width: 160px; padding: 10px; }
            .process-step { flex: 0 0 100%; }
            .case-detail-img { min-height: 200px; }
            .case-detail-img img { min-height: 200px; }
            .form-group input, .form-group select, .form-group textarea {
                font-size: 16px; /* 防止iOS自动缩放 */
            }
        }

        /* 安全区域适配（iPhone X 及以上刘海屏） */
        @supports (padding-bottom: env(safe-area-inset-bottom)) {
            .btn-call-mobile {
                padding-bottom: calc(14px + env(safe-area-inset-bottom));
            }
            .footer-bottom {
                padding-bottom: calc(20px + env(safe-area-inset-bottom));
            }
        }

        /* 打印样式 */
        @media print {
            .header, .float-contact, .back-to-top, .btn-call-mobile,
            .mobile-toggle, .news-ticker { display: none !important; }
            .hero { min-height: auto; padding: 30px 0; }
            .section { padding: 20px 0; }
            body { font-size: 12pt; color: #000; }
            a { color: #000; }
        }