/* 全局最大宽度限制 */
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            background-color: #f8f9fa;
            color: #212529;
            width: 100%;
            margin: 0 auto;
        }
        .container {
            max-width: 1920px;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1400px;
            }
        }
        @media (min-width: 1600px) {
            .container {
                max-width: 1500px;
            }
        }
        /* 导航栏样式 */
        .site-header {
            background: #ffffff;
            box-shadow: 0 2px 12px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid #eef2f6;
        }
        .header-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 0.8rem 0;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }
        .logo-img {
            height: 44px;
            width: auto;
            border-radius: 10px;
        }
        .logo-text {
            display: flex;
            flex-direction: column;
        }
        .company-name {
            font-size: 1.3rem;
            font-weight: 800;
            color: #1e3a5f;
            letter-spacing: -0.3px;
            line-height: 1.2;
        }
        .company-desc {
            font-size: 0.7rem;
            color: #5b6e8c;
            margin-top: 2px;
        }
        .header-nav {
            flex: 1;
            display: flex;
            justify-content: center;
        }
        .nav-menu {
            display: flex;
            gap: 1.8rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu li a {
            text-decoration: none;
            font-weight: 500;
            color: #2c3e50;
            font-size: 0.95rem;
            transition: 0.2s;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-menu li a:hover, .nav-menu li a.active {
            color: #e67e22;
        }
        .nav-menu li a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: #e67e22;
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        .phone-number {
            background: #f8f9fa;
            padding: 8px 16px;
            border-radius: 40px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: #1e3a5f;
        }
        .phone-number i { color: #e67e22; font-size: 1rem; }
        .phone-number a { text-decoration: none; color: #1e3a5f; }
        .search-icon, .mobile-toggle {
            cursor: pointer;
            font-size: 1.2rem;
            color: #2c3e50;
            transition: 0.2s;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: #f8f9fa;
        }
        .search-icon:hover, .mobile-toggle:hover {
            background: #eef2ff;
            color: #e67e22;
        }
        .mobile-toggle { display: none; }
        .mobile-menu {
            display: none;
            background: white;
            border-top: 1px solid #eef2f6;
            padding: 1rem 0;
        }
        .mobile-nav-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .mobile-nav-list li a {
            text-decoration: none;
            color: #2c3e50;
            font-weight: 500;
            display: block;
            padding: 0.5rem 0;
            border-bottom: 1px solid #f0f2f5;
        }
        .mobile-nav-list li a:hover { color: #e67e22; }

        /* 全屏搜索浮层 */
        .fullscreen-search {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.95);
            z-index: 2000;
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            backdrop-filter: blur(8px);
        }
        .search-container {
            width: 80%;
            max-width: 700px;
            display: flex;
            align-items: center;
            background: white;
            border-radius: 60px;
            padding: 0.2rem 0.5rem;
            margin-bottom: 2rem;
        }
        .search-form { flex: 1; display: flex; align-items: center; }
        .search-form input {
            flex: 1;
            border: none;
            padding: 1rem 1.5rem;
            font-size: 1.2rem;
            outline: none;
            background: transparent;
            font-family: inherit;
        }
        .search-form button {
            background: none;
            border: none;
            color: #e67e22;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0 0.8rem;
        }
        .close-search {
            font-size: 2rem;
            color: white;
            cursor: pointer;
            margin-left: 1rem;
            transition: 0.2s;
        }
        .close-search:hover { color: #e67e22; }
        .search-tips {
            color: rgba(255,255,255,0.8);
            text-align: center;
            font-size: 0.9rem;
        }
        .search-tips span {
            display: inline-block;
            background: rgba(255,255,255,0.2);
            padding: 4px 12px;
            border-radius: 30px;
            margin: 0 6px;
            cursor: pointer;
            transition: 0.2s;
        }
        .search-tips span:hover { background: #e67e22; color: white; }

        /* Hero 区域 */
        .hero-banner {
            background: linear-gradient(rgba(0,0,0,0.65), rgba(0,0,0,0.65)), url('/images/1523500997605565.jpg');
            background-size: cover;
            background-position: center 30%;
            color: white;
            padding: 100px 0;
        }
        .hero-banner h1 { font-size: 3rem; font-weight: 700; }
        @media (max-width: 992px) { .hero-banner h1 { font-size: 2.2rem; } }

        /* 卡片与通用组件 */
        .card-hover {
            transition: transform 0.2s, box-shadow 0.2s;
            border-radius: 1rem;
            overflow: hidden;
        }
        .card-hover:hover {
            transform: translateY(-5px);
            box-shadow: 0 1rem 2rem rgba(0,0,0,0.1) !important;
        }
        .icon-lg {
            font-size: 2.5rem;
            color: #0d6efd;
            margin-bottom: 1rem;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 2.5rem;
            text-align: center;
            position: relative;
        }
        .section-title:after {
            content: '';
            display: block;
            width: 80px;
            height: 3px;
            background: #0d6efd;
            margin: 1rem auto 0;
            border-radius: 4px;
        }
        .form-card {
            background: white;
            border-radius: 1.5rem;
            box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.05);
            padding: 2rem;
            border: 1px solid #e9ecef;
        }
        #homeQuote {
            padding: 1.5rem 2rem !important;
            margin-top: 2rem !important;
            margin-bottom: 0 !important;
        }
        #homeQuote h3 { font-size: 1.6rem; margin-bottom: 1.2rem !important; }
        #homeQuote .g-3 { --bs-gutter-y: 0.6rem; --bs-gutter-x: 1rem; }
        #homeQuote .form-control, #homeQuote textarea { padding: 0.6rem 1rem; font-size: 1rem; }
        #homeQuote .btn-primary { padding: 0.6rem 1rem; font-size: 1rem; }
        .news-item {
            border-left: 3px solid #0d6efd;
            padding-left: 1rem;
            margin-bottom: 1rem;
        }
        .footer {
            background-color: #212529;
            color: #adb5bd;
            padding: 3rem 0;
            margin-top: 3rem;
        }
        .product-tag {
            background: #e9ecef;
            color: #0d6efd;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 30px;
            display: inline-block;
            margin-bottom: 0.8rem;
        }
        .search-input {
            border-radius: 40px;
            border: 1px solid #ced4da;
            padding: 0.5rem 1rem;
        }
        .transition-card {
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }
        .transition-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 20px -8px rgba(0,0,0,0.15) !important;
        }
        .modal-content { border-radius: 28px; }

        /* 合作客户样式 */
        .customers-section {
            background: #ffffff;
            padding: 70px 0;
        }
        .customers-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .customers-header .title h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0;
            color: #1e3a5f;
        }
        .customers-header .title p {
            font-size: 0.9rem;
            color: #6c757d;
            letter-spacing: 2px;
            margin-top: 4px;
        }
        .more-btn .btn-more {
            background: #f8f9fa;
            border: 1px solid #e2e8f0;
            padding: 8px 24px;
            border-radius: 40px;
            text-decoration: none;
            color: #1e3a5f;
            font-weight: 500;
            transition: 0.2s;
        }
        .more-btn .btn-more i {
            margin-left: 6px;
            font-size: 0.8rem;
        }
        .more-btn .btn-more:hover {
            background: #e67e22;
            color: white;
            border-color: #e67e22;
        }
        .customer-logo-item {
            background: #ffffff;
            border-radius: 20px;
            padding: 20px;
            transition: all 0.25s ease;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.02);
            border: 1px solid #f0f2f5;
            height: 100%;
        }
        .customer-logo-item img {
            max-width: 100%;
            max-height: 80px;
            filter: grayscale(0%);
            transition: 0.3s;
            margin: 0 auto;
        }
        .customer-logo-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 20px -8px rgba(0,0,0,0.1);
            border-color: #e2e8f0;
        }
        .customer-logo-item:hover img {
            filter: grayscale(0%);
            transform: scale(1.02);
        }

        /* 响应式微调 */
        @media (max-width: 992px) {
            .header-nav { display: none; }
            .mobile-toggle { display: flex; }
            .phone-number a { display: none; }
            .phone-number { padding: 8px 12px; }
            .company-desc { display: none; }
            .logo-img { height: 36px; }
            .company-name { font-size: 1.1rem; }
            .hero-banner { padding: 70px 0; }
            .section-title { font-size: 1.8rem; }
            .customers-header .title h2 { font-size: 1.6rem; }
        }
        @media (max-width: 768px) {
            .hero-banner h1 { font-size: 1.8rem; }
            #homeQuote { padding: 1rem !important; }
        }
        @media (max-width: 576px) {
            .phone-number { padding: 6px 10px; }
            .search-container { width: 90%; }
            .search-form input { font-size: 1rem; padding: 0.8rem 1rem; }
        }

        /* 悬浮按钮样式 */
        .floating-btns {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 1050;
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: opacity 0.3s ease, visibility 0.3s ease;
            opacity: 1;
            visibility: visible;
        }
        .floating-btns.hide-btns { opacity: 0; visibility: hidden; }
        .float-item {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #0d6efd;
            color: white;
            font-size: 1.5rem;
            box-shadow: 0 4px 14px rgba(0,0,0,0.2);
            transition: all 0.2s ease;
            cursor: pointer;
            text-decoration: none;
            position: relative;
        }
        .float-item.phone-btn { background: #198754; }
        .float-item.top-btn { background: #6c757d; }
        .float-item.wechat-btn { background: #2cbb5c; }
        .float-item.quote-btn { background: #e67e22; }
        .float-item:hover { transform: scale(1.08); box-shadow: 0 6px 18px rgba(0,0,0,0.25); }
        .tooltip-text {
            position: absolute;
            right: 68px;
            background: rgba(0,0,0,0.7);
            color: #fff;
            padding: 6px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: 0.2s;
            pointer-events: none;
            font-weight: 500;
        }
        .float-item:hover .tooltip-text { opacity: 1; visibility: visible; }
        @media (max-width: 768px) {
            .floating-btns { right: 12px; bottom: 70px; gap: 10px; }
            .float-item { width: 46px; height: 46px; font-size: 1.3rem; }
            .tooltip-text { display: none; }
        }