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

        :root {
            --primary-color: #1e3a8a;
            --secondary-color: #3b82f6;
            --accent-color: #06b6d4;
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --bg-light: #f9fafb;
            --bg-white: #ffffff;
            --border-color: #e5e7eb;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background: var(--bg-light);
            padding-top: 70px;
        }

        /* 头部固定导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 70px;
            background: var(--bg-white);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            z-index: 3000;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 5%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: var(--primary-color);
            font-weight: 700;
            font-size: 24px;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 20px;
        }

        nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-item {
            position: relative;
            padding: 10px 16px;
            text-decoration: none;
            color: var(--text-dark);
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s;
            border-radius: 6px;
        }

        .nav-item:hover {
            color: var(--secondary-color);
            background: rgba(59, 130, 246, 0.08);
        }

        .nav-item.has-dropdown::after {
            content: '';
            display: inline-block;
            width: 0;
            height: 0;
            border-left: 4px solid transparent;
            border-right: 4px solid transparent;
            border-top: 4px solid currentColor;
            margin-left: 6px;
            transition: transform 0.3s;
        }

        .nav-item.has-dropdown:hover::after {
            transform: rotate(180deg);
        }

        /* 下拉菜单 */
        .dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 220px;
            background: var(--bg-white);
            border-radius: 8px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s;
            padding: 8px 0;
        }

        .nav-item:hover .dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .dropdown a {
            display: block;
            padding: 10px 20px;
            color: var(--text-dark);
            text-decoration: none;
            font-size: 14px;
            transition: all 0.2s;
        }

        .dropdown a:hover {
            background: var(--bg-light);
            color: var(--secondary-color);
            padding-left: 24px;
        }

        /* 联系按钮 */
        .header-contact {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .phone-btn {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            text-decoration: none;
            border-radius: 6px;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.3s;
        }

        .phone-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
        }

        /* 主要内容区 */
        main {
            min-height: calc(100vh - 350px);
        }

        /* Banner轮播区域 */
        .hero {
            position: relative;
            overflow: hidden;
            height: 520px;
        }

        .hero-slider {
            position: relative;
            width: 100%;
            height: 100%;
        }

        .hero-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 80px 5%;
            text-align: center;
            color: white;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.8s ease, visibility 0.8s ease;
            z-index: 1;
        }

        .hero-slide.active {
            opacity: 1;
            visibility: visible;
            z-index: 2;
        }

        .hero-slide:nth-child(1) {
            background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 50%, var(--secondary-color) 100%);
        }

        .hero-slide:nth-child(2) {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 60%, #2563eb 100%);
        }

        .hero-slide:nth-child(3) {
            background: linear-gradient(135deg, #0369a1 0%, #0ea5e9 50%, #22d3ee 100%);
        }

        .hero-slide::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('../images/hero-pattern.svg');
            opacity: 0.3;
        }

        .hero-content {
            position: relative;
            z-index: 1;
        }

        /* 轮播控制按钮 */
        .hero-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 48px;
            height: 48px;
            background: rgba(255, 255, 255, 0.18);
            border: none;
            border-radius: 50%;
            color: white;
            font-size: 28px;
            line-height: 1;
            cursor: pointer;
            z-index: 10;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s;
            backdrop-filter: blur(4px);
        }

        .hero-arrow:hover {
            background: rgba(255, 255, 255, 0.4);
            transform: translateY(-50%) scale(1.1);
        }

        .hero-arrow.prev { left: 24px; }
        .hero-arrow.next { right: 24px; }

        .hero-dots {
            position: absolute;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 10px;
            z-index: 10;
        }

        .hero-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.4);
            cursor: pointer;
            transition: all 0.3s;
        }

        .hero-dot.active {
            background: white;
            width: 30px;
            border-radius: 6px;
        }

        .hero h1 {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 16px;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }

        .hero p {
            font-size: 20px;
            opacity: 0.9;
            max-width: 800px;
            margin: 0 auto 32px;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s;
        }

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

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.15);
            color: white;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.25);
            border-color: rgba(255, 255, 255, 0.5);
        }

        /* 产品与解决方案 */
        .section {
            padding: 90px 5%;
        }

        .section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .section-title {
            font-size: 40px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 18px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .product-card {
            background: var(--bg-white);
            border-radius: 12px;
            padding: 32px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            transition: all 0.3s;
            border: 1px solid var(--border-color);
        }

        .product-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
            border-color: var(--secondary-color);
        }

        .product-icon {
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 32px;
            margin-bottom: 20px;
        }

        .product-card h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .product-card p {
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .product-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 600;
            font-size: 15px;
            transition: gap 0.3s;
        }

        .product-link:hover {
            gap: 10px;
        }

        /* 行业解决方案 */
        .solutions {
            background: var(--bg-white);
        }

        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .solution-card {
            background: var(--bg-light);
            border-radius: 10px;
            padding: 28px;
            transition: all 0.3s;
            text-decoration: none;
            color: inherit;
            display: block;
        }

        .solution-card:hover {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            transform: translateY(-5px);
        }

        .solution-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .solution-card p {
            font-size: 14px;
            opacity: 0.8;
            line-height: 1.6;
        }

        /* 关于我们 */
        .about {
            background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
        }

        .about-content {
            max-width: 1000px;
            margin: 0 auto;
            text-align: center;
        }

        .about-text {
            font-size: 18px;
            color: var(--text-dark);
            line-height: 1.8;
        }

        /* 合作客户 */
        .partners {
            background: var(--bg-white);
        }

        .partners-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .partner-card {
            background: var(--bg-light);
            border-radius: 8px;
            padding: 24px;
            border-left: 4px solid var(--secondary-color);
            transition: all 0.3s;
        }

        .partner-card:hover {
            background: white;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        .partner-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .partner-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        .view-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            background: var(--primary-color);
            color: white;
            text-decoration: none;
            border-radius: 6px;
            font-weight: 600;
            margin-top: 40px;
            transition: all 0.3s;
        }

        .view-more:hover {
            background: var(--secondary-color);
            transform: translateY(-2px);
        }

        /* 底部 */
        footer {
            background: var(--text-dark);
            color: white;
        }

        .footer-main {
            background: #1f2937;
            padding: 40px 5% 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
            gap: 40px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .footer-brand h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: white;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }

        .footer-section h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            color: white;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .footer-links a:hover {
            color: var(--accent-color);
        }

        .footer-contact p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            margin-bottom: 10px;
        }

        .footer-contact a {
            color: var(--accent-color);
            text-decoration: none;
        }

        .footer-bottom {
            background: #111827;
            padding: 16px 5%;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: white;
        }

        /* 悬浮联系 */
        .float-contact {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 998;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            transition: all 0.3s;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .float-btn.phone {
            background: linear-gradient(135deg, #10b981, #059669);
            color: white;
        }

        .float-btn.wechat {
            background: linear-gradient(135deg, #06b6d4, #0891b2);
            color: white;
        }

        .float-btn:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
        }

        .float-btn span {
            font-size: 24px;
        }

        /* 新闻资讯 */
        .news {
            background: var(--bg-white);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .news-col h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--secondary-color);
            color: var(--text-dark);
        }

        .news-list {
            list-style: none;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px dashed var(--border-color);
            text-decoration: none;
            transition: all 0.3s;
        }

        .news-item:hover {
            padding-left: 8px;
        }

        .news-date {
            flex-shrink: 0;
            width: 64px;
            height: 64px;
            background: var(--bg-light);
            border-radius: 8px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-weight: 700;
            border: 1px solid var(--border-color);
        }

        .news-date .day {
            font-size: 22px;
            line-height: 1;
        }

        .news-date .month {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 4px;
        }

        .news-info {
            flex: 1;
            min-width: 0;
        }

        .news-info h4 {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-dark);
            margin-bottom: 4px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            transition: color 0.3s;
        }

        .news-item:hover .news-info h4 {
            color: var(--secondary-color);
        }

        .news-info p {
            font-size: 13px;
            color: var(--text-light);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* 响应式设计 */
        @media (max-width: 1200px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }

        @media (max-width: 992px) {
            nav:not(header nav) {
                display: none;
            }

            .hero h1 {
                font-size: 36px;
            }

            .hero p {
                font-size: 18px;
            }

            .section-title {
                font-size: 30px;
            }

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

        @media (max-width: 768px) {
            .hero {
                height: 420px;
            }

            .hero h1 {
                font-size: 28px;
            }

            .hero p {
                font-size: 16px;
            }

            .section {
                padding: 60px 5%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            body {
                padding-bottom: 0;
            }

            .news-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero-arrow {
                width: 40px;
                height: 40px;
                font-size: 22px;
            }

            .hero-arrow.prev { left: 10px; }
            .hero-arrow.next { right: 10px; }

            .btn {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            border: none;
            background: none;
            cursor: pointer;
            position: relative;
            z-index: 3001;
            flex-direction: column;
            justify-content: space-around;
            padding: 8px;
        }

        .mobile-menu-btn span {
            display: block;
            width: 100%;
            height: 3px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: all 0.3s;
        }

        @media (max-width: 992px) {
            .mobile-menu-btn {
                display: flex;
            }

            .header-contact .phone-btn {
                padding: 8px 16px;
                font-size: 14px;
            }

            /* 移动端展开菜单 */
            header nav {
                display: flex;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                z-index: 2999;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                max-height: 0;
                overflow: hidden;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                transition: max-height 0.35s ease;
            }

            header nav.open {
                max-height: 80vh;
                overflow-y: auto;
            }

            header nav .nav-item {
                display: block;
                width: 100%;
                padding: 14px 5%;
                border-radius: 0;
                border-bottom: 1px solid var(--border-color);
                cursor: pointer;
            }

            header nav .nav-item.has-dropdown::after {
                display: none;
            }

            header nav .dropdown {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                padding: 0;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
            }

            header nav .nav-item.dropdown-open > .dropdown,
            header nav .nav-item.open > .dropdown {
                max-height: 600px;
            }

            header nav .dropdown a {
                padding: 10px 8% 10px 10%;
                font-size: 14px;
                background: var(--bg-light);
            }

            /* 汉堡按钮动画 */
            .mobile-menu-btn.active span:nth-child(1) {
                transform: translateY(11px) rotate(45deg);
            }

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

            .mobile-menu-btn.active span:nth-child(3) {
                transform: translateY(-11px) rotate(-45deg);
            }
        }

        /* ===== 联系页专用样式 ===== */

        /* 当前页高亮 */
        .nav-item.active {
            color: var(--secondary-color);
            background: rgba(59, 130, 246, 0.08);
        }

        /* 内页 Banner */
        .page-banner {
            background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 50%, var(--secondary-color) 100%);
            color: white;
            padding: 120px 5% 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .page-banner::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='0.05'%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: 0.3;
        }

        .page-banner-inner {
            position: relative;
            z-index: 1;
        }

        .page-banner h1 {
            font-size: 44px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 1px;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }

        .page-banner p {
            font-size: 19px;
            opacity: 0.9;
        }

        /* 联系布局 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1.25fr;
            gap: 48px;
            max-width: 1200px;
            margin: 0 auto;
        }

        /* 联系信息卡片 */
        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .contact-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 22px 24px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            transition: all 0.3s;
        }

        .contact-card:hover {
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
            border-color: var(--secondary-color);
            transform: translateY(-3px);
        }

        .contact-icon {
            width: 52px;
            height: 52px;
            flex-shrink: 0;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 24px;
        }

        .contact-text h3 {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
            margin-bottom: 6px;
        }

        .contact-text p {
            font-size: 17px;
            color: var(--text-dark);
            font-weight: 600;
        }

        .contact-text p a {
            color: var(--text-dark);
            text-decoration: none;
            transition: color 0.3s;
        }

        .contact-text p a:hover {
            color: var(--secondary-color);
        }

        .contact-sub {
            display: block;
            font-size: 13px;
            color: var(--text-light);
            margin-top: 4px;
        }

        /* 留言表单 */
        .contact-form-wrap {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 36px;
        }

        .contact-form-wrap h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

        .form-tip {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 24px;
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group label {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-dark);
        }

        .form-group label .req {
            color: #ef4444;
            margin-left: 2px;
        }

        .form-control {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 15px;
            font-family: inherit;
            color: var(--text-dark);
            background: var(--bg-light);
            transition: all 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--secondary-color);
            background: white;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }

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

        .submit-btn {
            align-self: flex-start;
            padding: 14px 40px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
        }

        .form-result {
            font-size: 14px;
            color: var(--text-light);
            min-height: 20px;
        }

        .form-result.ok {
            color: #16a34a;
            font-weight: 600;
        }

        /* 地图位置 */
        .contact-map {
            max-width: 1200px;
            margin: 48px auto 0;
            height: 320px;
            border-radius: 12px;
            background: linear-gradient(135deg, #1e293b, #334155);
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.9);
        }

        .contact-map::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='0.04'%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: 0.4;
        }

        .map-pin {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .map-pin .pin {
            font-size: 40px;
        }

        .map-pin p {
            margin-top: 8px;
            font-size: 15px;
        }

        @media (max-width: 992px) {
            .contact-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 100px 5% 50px;
            }

            .page-banner h1 {
                font-size: 30px;
            }

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

            .contact-form-wrap {
                padding: 24px;
            }
        }

        /* 下拉菜单当前项高亮 */
        .dropdown a.active {
            color: var(--secondary-color);
            font-weight: 600;
            background: rgba(59, 130, 246, 0.06);
        }

        /* ===== 招聘页专用样式 ===== */
        .job-list {
            max-width: 1000px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .job-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-left: 4px solid var(--secondary-color);
            border-radius: 12px;
            padding: 28px 32px;
            transition: all 0.3s;
        }

        .job-card:hover {
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
            transform: translateY(-3px);
            border-left-color: var(--primary-color);
        }

        .job-head {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .job-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
        }

        .job-tag {
            flex-shrink: 0;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--secondary-color);
            background: rgba(59, 130, 246, 0.1);
            border-radius: 20px;
        }

        .job-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            margin: 14px 0 16px;
            font-size: 13px;
            color: var(--text-light);
        }

        .job-desc {
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .job-apply {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            text-decoration: none;
            border-radius: 8px;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s;
        }

        .job-apply:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
        }

        @media (max-width: 768px) {
            .job-card {
                padding: 22px 20px;
            }

            .job-title {
                font-size: 17px;
            }
        }

        /* ===== 招聘详情页专用样式 ===== */
        .breadcrumb {
            max-width: 1000px;
            margin: 24px auto 0;
            padding: 0 20px;
            font-size: 14px;
            color: var(--text-light);
        }

        .breadcrumb a {
            color: var(--text-light);
            text-decoration: none;
        }

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

        .breadcrumb span {
            margin: 0 8px;
            color: #cbd5e1;
        }

        .job-detail {
            max-width: 860px;
            margin: 24px auto 0;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
        }

        .job-detail-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .job-detail-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 24px;
            padding-bottom: 24px;
            margin-bottom: 28px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
            color: var(--text-light);
        }

        .job-detail-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .job-detail-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 28px 0 14px;
            padding-left: 12px;
            border-left: 4px solid var(--secondary-color);
        }

        .job-detail-body p {
            color: var(--text-light);
            line-height: 1.9;
            font-size: 15px;
        }

        .job-detail-body ul {
            margin: 0;
            padding-left: 22px;
        }

        .job-detail-body li {
            color: var(--text-light);
            line-height: 1.9;
            font-size: 15px;
            margin-bottom: 8px;
        }

        .job-apply-box {
            margin-top: 36px;
            padding: 24px 28px;
            background: linear-gradient(135deg, rgba(30, 58, 138, 0.04), rgba(59, 130, 246, 0.06));
            border: 1px solid rgba(59, 130, 246, 0.2);
            border-radius: 12px;
        }

        .job-apply-box h4 {
            font-size: 16px;
            color: var(--text-dark);
            margin-bottom: 14px;
        }

        .job-apply-box .contact-line {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 28px;
            margin-bottom: 18px;
            font-size: 15px;
            color: var(--text-light);
        }

        .job-apply-box .contact-line strong {
            color: var(--text-dark);
        }

        .job-apply-box .contact-line a {
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 600;
        }

        .related-jobs {
            max-width: 860px;
            margin: 48px auto 0;
            padding: 0 20px;
        }

        .related-jobs h3 {
            font-size: 20px;
            color: var(--text-dark);
            margin-bottom: 18px;
        }

        .related-jobs ul {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 14px;
        }

        .related-jobs a {
            display: block;
            padding: 16px 18px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
        }

        .related-jobs a:hover {
            border-color: var(--secondary-color);
            color: var(--secondary-color);
            transform: translateY(-2px);
        }

        .related-jobs .rj-date {
            display: block;
            font-size: 13px;
            font-weight: 400;
            color: var(--text-light);
            margin-top: 6px;
        }

        .job-pager {
            max-width: 860px;
            margin: 40px auto 0;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            gap: 16px;
        }

        .job-pager a {
            color: var(--text-light);
            text-decoration: none;
            font-size: 14px;
        }

        .job-pager a:hover {
            color: var(--secondary-color);
        }

        .job-pager .disabled {
            color: #cbd5e1;
            cursor: default;
        }

        /* 列表页：标题可点 + 详情链接 */
        .job-title a {
            color: var(--text-dark);
            text-decoration: none;
        }

        .job-title a:hover {
            color: var(--secondary-color);
        }

        .job-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .job-detail-link {
            color: var(--secondary-color);
            text-decoration: none;
            font-size: 14px;
            font-weight: 600;
        }

        .job-detail-link:hover {
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            .job-detail {
                padding: 24px 20px;
            }

            .job-detail-title {
                font-size: 22px;
            }
        }
    
        /* ===== 移动端子菜单展开控制 ===== */
        .nav-item.dropdown-open::after {
            transform: rotate(180deg);
        }

        @media (min-width: 993px) {
            .nav-item.dropdown-open::after {
                transform: none;
            }
        }

        body.mobile-menu-open {
            overflow: hidden;
        }

        @media (max-width: 992px) {
            header nav .nav-item.dropdown-open::after {
                transform: rotate(180deg);
            }
        }

        @media (max-width: 480px) {
            header {
                padding: 0 16px;
            }

            .logo {
                gap: 8px;
                font-size: 20px;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 18px;
            }

            .header-contact {
                gap: 8px;
            }

            .header-contact .phone-btn {
                width: 42px;
                height: 42px;
                padding: 0;
                justify-content: center;
                border-radius: 10px;
            }

            .header-contact .phone-btn span:last-child {
                display: none;
            }
        }
    
        /* ===== 左侧关于我们子菜单（招聘/详情页两栏布局） ===== */
        .page-layout {
            max-width: 1280px;
            margin: 48px auto;
            padding: 0 24px;
        }

        .page-layout.has-side {
            display: flex;
            gap: 32px;
            align-items: flex-start;
        }

        .side-menu {
            flex: 0 0 220px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 14px;
            padding: 18px 0;
            position: sticky;
            top: 90px;
        }

        .side-menu-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            padding: 0 22px 12px;
            margin: 0 0 6px;
            border-bottom: 1px solid var(--border-color);
        }

        .side-menu-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .side-menu-list a {
            display: block;
            padding: 11px 22px;
            color: var(--text-light);
            text-decoration: none;
            font-size: 15px;
            border-left: 3px solid transparent;
            transition: all 0.25s;
        }

        .side-menu-list a:hover {
            color: var(--secondary-color);
            background: rgba(59, 130, 246, 0.06);
        }

        .side-menu-list a.active {
            color: var(--secondary-color);
            background: rgba(59, 130, 246, 0.08);
            border-left-color: var(--secondary-color);
            font-weight: 600;
        }

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

        @media (max-width: 768px) {
            .page-layout.has-side {
                flex-direction: column;
                gap: 20px;
                margin: 20px auto;
            }

            .page-layout {
                margin: 20px auto;
            }

            .side-menu {
                flex: none;
                width: 100%;
                position: static;
                padding: 14px 0;
            }

            .side-menu-title {
                border-bottom: none;
                padding-bottom: 6px;
            }

            .side-menu-list {
                display: flex;
                flex-wrap: wrap;
                gap: 8px;
                padding: 0 14px;
            }

            .side-menu-list a {
                border-left: none;
                border: 1px solid var(--border-color);
                border-radius: 8px;
                padding: 8px 14px;
            }
        }
        /* ===== 新闻资讯列表页样式 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 20px;
        }

        .news-card {
            display: block;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 14px;
            padding: 22px 24px;
            text-decoration: none;
            transition: all 0.3s;
        }

        .news-card:hover {
            border-color: var(--secondary-color);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(30, 58, 138, 0.08);
        }

        .news-cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            margin-bottom: 12px;
            color: #fff;
        }

        .cat-tech { background: #3b82f6; }
        .cat-news { background: #f59e0b; }
        .cat-trade { background: #10b981; }
        .cat-job { background: #8b5cf6; }

        .news-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.5;
            margin-bottom: 10px;
        }

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

        .news-excerpt {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            font-size: 13px;
            color: #94a3b8;
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
        }

        .pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .pagination a,
        .pagination span {
            min-width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0 12px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            color: var(--text-light);
            text-decoration: none;
            font-size: 14px;
            transition: all 0.25s;
        }

        .pagination a:hover {
            border-color: var(--secondary-color);
            color: var(--secondary-color);
        }

        .pagination .current {
            background: var(--secondary-color);
            border-color: var(--secondary-color);
            color: #fff;
        }

        .pagination .disabled {
            color: #cbd5e1;
            cursor: default;
        }

        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ===== 行业解决方案详情页样式 ===== */
        .solution-section {
            margin-bottom: 44px;
        }

        .sol-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 18px;
            padding-left: 14px;
            border-left: 4px solid var(--secondary-color);
        }

        .solution-intro {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-light);
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 14px;
            padding: 22px 26px;
            margin-bottom: 22px;
        }

        .pain-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .pain-list li {
            position: relative;
            padding-left: 26px;
            margin-bottom: 12px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-light);
        }

        .pain-list li::before {
            content: "\26A0";
            position: absolute;
            left: 0;
            color: #f59e0b;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 18px;
        }

        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 14px;
            padding: 22px;
            transition: all 0.3s;
        }

        .feature-card:hover {
            border-color: var(--secondary-color);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(30, 58, 138, 0.08);
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(59, 130, 246, 0.1);
            color: var(--secondary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 14px;
        }

        .feature-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-light);
            margin: 0;
        }

        .arch-diagram {
            background: var(--bg-white);
            border: 1px dashed var(--border-color);
            border-radius: 14px;
            padding: 18px;
            margin-bottom: 8px;
            text-align: center;
        }

        .arch-diagram svg {
            width: 100%;
            max-width: 760px;
            height: auto;
        }

        .arch-caption {
            margin-top: 8px;
            font-size: 13px;
            color: #94a3b8;
        }

        .solution-cta {
            background: linear-gradient(135deg, #1e3a8a, #3b82f6);
            border-radius: 16px;
            padding: 34px 32px;
            color: #fff;
            text-align: center;
        }

        .solution-cta h3 {
            color: #fff;
            font-size: 20px;
            margin-bottom: 10px;
        }

        .solution-cta p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 18px;
        }

        .solution-cta .cta-btn {
            display: inline-block;
            background: #fff;
            color: var(--secondary-color);
            padding: 11px 28px;
            border-radius: 30px;
            font-weight: 700;
            text-decoration: none;
            transition: all 0.25s;
        }

        .solution-cta .cta-btn:hover {
            background: rgba(255, 255, 255, 0.9);
        }

        @media (max-width: 768px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 服务支持页专用样式 ===== */
        .service-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 36px;
        }

        .service-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-left: 4px solid var(--secondary-color);
            border-radius: 12px;
            padding: 26px 30px;
            display: flex;
            align-items: flex-start;
            gap: 22px;
            transition: all 0.3s;
        }

        .service-card:hover {
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
            transform: translateY(-3px);
            border-left-color: var(--primary-color);
        }

        .service-icon {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: #fff;
        }

        .service-body {
            flex: 1;
            min-width: 0;
        }

        .service-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .service-card p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-light);
            margin: 0;
        }

        @media (max-width: 768px) {
            .service-card {
                flex-direction: column;
                gap: 14px;
                padding: 22px 20px;
            }

            .service-icon {
                width: 48px;
                height: 48px;
                font-size: 22px;
            }

            .service-card h3 {
                font-size: 17px;
            }
        }

        /* ===== 商务合作页专用样式 ===== */
        .coop-intro {
            background: linear-gradient(135deg, rgba(30, 58, 138, 0.04), rgba(59, 130, 246, 0.06));
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 34px 36px;
            margin-bottom: 12px;
            font-size: 16px;
            line-height: 2;
            color: var(--text-dark);
        }

        .coop-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-bottom: 40px;
        }

        .coop-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 14px;
            padding: 30px 32px;
            transition: all 0.3s;
        }

        .coop-card:hover {
            box-shadow: 0 10px 30px rgba(30, 58, 138, 0.08);
            transform: translateY(-3px);
            border-color: var(--secondary-color);
        }

        .coop-card-head {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 22px;
        }

        .coop-card-icon {
            width: 50px;
            height: 50px;
            flex-shrink: 0;
            border-radius: 13px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 24px;
        }

        .coop-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0;
        }

        .step-list {
            list-style: none;
            counter-reset: step;
            padding: 0;
            margin: 0;
        }

        .step-list li {
            position: relative;
            padding-left: 44px;
            margin-bottom: 16px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-light);
        }

        .step-list li::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            left: 0;
            top: 2px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .coop-email {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-light);
            margin: 0;
        }

        .coop-email a {
            color: var(--secondary-color);
            font-weight: 700;
            text-decoration: none;
            font-size: 18px;
        }

        .coop-email a:hover {
            text-decoration: underline;
        }

        .coop-note {
            margin-top: 16px;
            padding: 14px 18px;
            background: rgba(59, 130, 246, 0.06);
            border-radius: 10px;
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .coop-grid {
                grid-template-columns: 1fr;
            }

            .coop-intro {
                padding: 24px 20px;
                font-size: 15px;
            }
        }

        /* 业务领域标签 */
        .scope-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            margin-bottom: 8px;
        }

        .scope-tag {
            padding: 12px 26px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            transition: all 0.3s;
        }

        .scope-tag:hover {
            border-color: var(--secondary-color);
            color: var(--secondary-color);
            box-shadow: 0 6px 16px rgba(59, 130, 246, 0.12);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .scope-tag {
                font-size: 15px;
                padding: 10px 20px;
            }
        }

        /* 主要业务下拉标题可点击（指向业务总览页） */
        .nav-item.has-dropdown > a {
            color: inherit;
            text-decoration: none;
        }

        /* ===== 主营业务总览页专用样式 ===== */
        .business-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }

        .business-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 14px;
            padding: 30px 28px;
            transition: all 0.3s;
            display: flex;
            flex-direction: column;
        }

        .business-card:hover {
            box-shadow: 0 12px 32px rgba(30, 58, 138, 0.1);
            transform: translateY(-4px);
            border-color: var(--secondary-color);
        }

        .business-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: #fff;
            margin-bottom: 18px;
        }

        .business-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 10px;
        }

        .business-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-light);
            margin: 0 0 18px;
            flex: 1;
        }

        .business-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--secondary-color);
            font-weight: 600;
            font-size: 14px;
            text-decoration: none;
            transition: gap 0.25s;
        }

        .business-card:hover .business-more {
            gap: 10px;
        }

        @media (max-width: 768px) {
            .business-card {
                padding: 24px 22px;
            }

            .business-icon {
                width: 50px;
                height: 50px;
                font-size: 24px;
            }
        }

        /* ===== 主营业务子页专用样式 ===== */
        .biz-intro {
            background: linear-gradient(135deg, rgba(30, 58, 138, 0.04), rgba(59, 130, 246, 0.08));
            border-left: 4px solid var(--secondary-color);
            border-radius: 12px;
            padding: 24px 28px;
            margin-bottom: 40px;
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-light);
        }

        .biz-intro strong {
            color: var(--text-dark);
        }

        .stat-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 18px;
            margin-bottom: 12px;
        }

        .stat {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 14px;
            padding: 26px 20px;
            text-align: center;
        }

        .stat .num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1.2;
        }

        .stat .label {
            font-size: 14px;
            color: var(--text-light);
            margin-top: 6px;
        }

        .node-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
            gap: 14px;
            margin-bottom: 12px;
        }

        .node-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 16px;
            text-align: center;
            transition: all 0.25s;
        }

        .node-item:hover {
            border-color: var(--secondary-color);
            transform: translateY(-3px);
        }

        .node-item .city {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-dark);
        }

        .node-item .ms {
            font-size: 13px;
            color: var(--secondary-color);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .stat-row {
                grid-template-columns: repeat(2, 1fr);
            }

            .node-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
/* ===== 首页响应式修正：新闻区溢出 + 中小屏导航折叠 ===== */
.news-col,
.news-list,
.news-list li,
.news-item,
.news-info {
    min-width: 0;
    max-width: 100%;
}

.news-item {
    width: 100%;
}

.news-info h4,
.news-info p {
    max-width: 100%;
}

@media (max-width: 1280px) {
    .mobile-menu-btn {
        display: flex;
    }

    header nav {
        display: flex;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        z-index: 2999;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        transition: max-height 0.35s ease;
    }

    header nav.open {
        max-height: 80vh;
        overflow-y: auto;
    }

    header nav .nav-item {
        display: block;
        width: 100%;
        padding: 14px 5%;
        border-radius: 0;
        border-bottom: 1px solid var(--border-color);
        cursor: pointer;
    }

    header nav .nav-item.has-dropdown::after {
        display: none;
    }

    header nav .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    header nav .nav-item.dropdown-open > .dropdown,
    header nav .nav-item.open > .dropdown {
        max-height: 600px;
    }

    header nav .dropdown a {
        padding: 10px 8% 10px 10%;
        font-size: 14px;
        background: var(--bg-light);
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(11px) rotate(45deg);
    }

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

    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-11px) rotate(-45deg);
    }
}

@media (min-width: 1281px) {
    body.mobile-menu-open {
        overflow: auto;
    }
}

@media (max-width: 480px) {
    .hero-slide {
        padding-left: 32px;
        padding-right: 32px;
    }

    .section {
        padding-left: 16px;
        padding-right: 16px;
    }
}