/* ===== 全局重置 ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background: #fafbff;
            color: #1e293b;
            line-height: 1.6;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航栏 ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: #ffffff;
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
            transition: box-shadow 0.3s;
        }

        .navbar.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }

        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        /* ===== Logo 设计 ===== */
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.5rem;
            letter-spacing: -0.5px;
            color: #0f172a;
            cursor: default;
        }

        .logo-icon {
            position: relative;
            width: 44px;
            height: 44px;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 100%;
            height: 100%;
            display: block;
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .logo-text .brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #000000;
            -webkit-text-fill-color: #000000;
            background: none;
            letter-spacing: -0.3px;
        }

        .logo-text .sub {
            font-size: 0.6rem;
            font-weight: 500;
            color: #64748b;
            letter-spacing: 0.8px;
            text-transform: uppercase;
            -webkit-text-fill-color: #64748b;
            background: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
            font-weight: 500;
            color: #334155;
        }

        .nav-links a {
            transition: color 0.2s;
            font-size: 0.95rem;
            position: relative;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: #2563eb;
            transition: width 0.3s;
        }

        .nav-links a:hover {
            color: #2563eb;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .btn-nav {
            background: #2563eb;
            color: #fff !important;
            padding: 8px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: background 0.3s, transform 0.2s;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
            cursor: pointer;
            border: none;
        }

        .btn-nav::after {
            display: none !important;
        }

        .btn-nav:hover {
            background: #1d4ed8;
            transform: translateY(-2px);
            color: #fff !important;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #1e293b;
            border-radius: 4px;
            transition: 0.3s;
        }

        /* ===== 通用按钮 ===== */
        .btn-primary {
            display: inline-block;
            background: #2563eb;
            color: #fff;
            padding: 14px 40px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
            letter-spacing: 0.3px;
        }

        .btn-primary:hover {
            background: #1d4ed8;
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(37, 99, 235, 0.45);
        }

        .btn-outline {
            display: inline-block;
            background: transparent;
            color: #2563eb;
            padding: 13px 38px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid #2563eb;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-left: 16px;
        }

        .btn-outline:hover {
            background: #2563eb;
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            padding: 140px 0 80px;
            background: linear-gradient(178deg, #f0f4ff 0%, #ffffff 100%);
            position: relative;
            overflow: hidden;
        }

        .hero .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.5px;
            color: #0f172a;
            margin-bottom: 20px;
            white-space: nowrap;
        }

        .hero-content h1 .highlight {
            background: linear-gradient(135deg, #2563eb, #2563eb);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content p {
            font-size: 1.2rem;
            color: #475569;
            max-width: 520px;
            margin-bottom: 36px;
            line-height: 1.7;
        }

        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(0, 0, 0, 0.05);
        }

        .hero-stats div {
            text-align: left;
        }

        .hero-stats strong {
            display: block;
            font-size: 1.8rem;
            font-weight: 700;
            color: #0f172a;
            letter-spacing: -0.5px;
        }

        .hero-stats span {
            font-size: 0.95rem;
            color: #64748b;
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }

        .hero-visual svg {
            width: 100%;
            max-width: 520px;
            height: auto;
        }

        /* ===== 通用 Section ===== */
        .section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 56px;
        }

        .section-header h2 {
            font-size: 2.4rem;
            font-weight: 700;
            letter-spacing: -1px;
            color: #0f172a;
            margin-bottom: 12px;
        }

        .section-header p {
            color: #64748b;
            font-size: 1.1rem;
        }

        .section-header .badge {
            display: inline-block;
            background: #dbeafe;
            color: #2563eb;
            padding: 4px 18px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        /* ===== 产品矩阵 ===== */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .product-card {
            background: #fff;
            padding: 28px 18px;
            border-radius: 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
            border: 1px solid rgba(0, 0, 0, 0.03);
            transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            position: relative;
            overflow: hidden;
        }

        .product-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, #2563eb, #2563eb);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(37, 99, 235, 0.08);
            border-color: rgba(37, 99, 235, 0.15);
        }

        .product-card:hover::before {
            opacity: 1;
        }

        .product-card .icon {
            font-size: 2.2rem;
            color: #2563eb;
            margin-bottom: 16px;
            display: inline-block;
            background: #eff6ff;
            padding: 12px;
            border-radius: 16px;
            line-height: 1;
        }

        .product-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #0f172a;
        }

        .product-card p {
            color: #64748b;
            font-size: 0.9rem;
            margin-bottom: 14px;
        }

        .product-card .feature-list {
            font-size: 0.88rem;
            color: #475569;
        }

        .product-card .feature-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 6px;
        }

        .product-card .feature-list li i {
            color: #2563eb;
            font-size: 0.7rem;
        }

        /* ===== 优势赋能 ===== */
        .advantages {
            background: #0f172a;
            color: #fff;
        }

        .advantages .section-header h2 {
            color: #fff;
        }

        .advantages .section-header p {
            color: #94a3b8;
        }

        .advantages .section-header .badge {
            background: rgba(37, 99, 235, 0.3);
            color: #60a5fa;
        }

        .adv-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        .adv-item {
            background: rgba(255, 255, 255, 0.04);
            backdrop-filter: blur(4px);
            padding: 32px 24px;
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.3s;
        }

        .adv-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: scale(1.02);
        }

        .adv-item .icon {
            font-size: 2rem;
            color: #60a5fa;
            margin-bottom: 16px;
        }

        .adv-item h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .adv-item p {
            color: #cbd5e1;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* ===== 解决方案 ===== */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .solution-card {
            background: #fff;
            padding: 32px 28px;
            border-radius: 24px;
            border: 1px solid #f1f5f9;
            display: flex;
            align-items: flex-start;
            gap: 20px;
            transition: all 0.3s;
        }

        .solution-card:hover {
            border-color: #2563eb;
            box-shadow: 0 12px 30px rgba(37, 99, 235, 0.06);
        }

        .solution-card .icon {
            font-size: 1.8rem;
            color: #2563eb;
            background: #eff6ff;
            padding: 12px;
            border-radius: 16px;
            flex-shrink: 0;
        }

        .solution-card h4 {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 6px;
            color: #0f172a;
        }

        .solution-card p {
            color: #64748b;
            font-size: 0.95rem;
        }

        /* ===== 信任数据 ===== */
        .trust {
            background: linear-gradient(135deg, #f8faff, #ffffff);
            border-top: 1px solid #eef2f6;
            border-bottom: 1px solid #eef2f6;
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }

        .trust-item h3 {
            font-size: 2.8rem;
            font-weight: 700;
            color: #0f172a;
            letter-spacing: -1px;
        }

        .trust-item h3 .counter {
            background: linear-gradient(135deg, #2563eb, #2563eb);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .trust-item p {
            color: #64748b;
            font-weight: 500;
            font-size: 1rem;
        }

        /* ===== 新闻动态 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 30px;
        }

        .news-card {
            background: #fff;
            padding: 24px;
            border-radius: 20px;
            border: 1px solid #f1f5f9;
            transition: 0.3s;
        }

        .news-card:hover {
            border-color: #dbeafe;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.02);
        }

        .news-card .date {
            color: #94a3b8;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .news-card h4 {
            font-weight: 600;
            margin: 10px 0 8px;
            font-size: 1.05rem;
            color: #0f172a;
        }

        .news-card p {
            color: #64748b;
            font-size: 0.9rem;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #0f172a;
            color: #e2e8f0;
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-wechat {
            text-align: left;
        }

        .footer-wechat h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .footer-wechat .qr-box {
            display: inline-block;
            background: #fff;
            border-radius: 10px;
            padding: 6px;
            line-height: 0;
        }

        .footer-wechat .qr-box img {
            width: 110px;
            height: 110px;
            object-fit: cover;
            border-radius: 6px;
            display: block;
        }

        .footer-wechat .wechat-tip {
            color: #94a3b8;
            font-size: 0.82rem;
            margin-top: 8px;
        }

        .footer-wechat .wechat-phone {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 600;
            margin-top: 8px;
            letter-spacing: 0.5px;
        }

        .footer-wechat .wechat-phone i {
            color: #3b82f6;
            margin-right: 6px;
        }

        .footer-brand p {
            color: #94a3b8;
            margin-top: 12px;
            max-width: 280px;
            font-size: 0.95rem;
        }

        .footer-brand .logo-text .brand {
            font-size: 1.3rem;
            -webkit-text-fill-color: #fff;
            background: linear-gradient(135deg, #60a5fa, #22d3ee);
            -webkit-background-clip: text;
            background-clip: text;
        }

        .footer-brand .logo-text .sub {
            -webkit-text-fill-color: #94a3b8;
        }

        .footer-col h5 {
            color: #fff;
            font-weight: 600;
            margin-bottom: 16px;
            font-size: 1rem;
        }

        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: #94a3b8;
            transition: color 0.2s;
            cursor: pointer;
        }

        .footer-col ul li:hover {
            color: #60a5fa;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #64748b;
        }

        .footer-bottom .footer-left {
            display: flex;
            flex-direction: column;
            gap: 6px;
            text-align: left;
        }

        .footer-bottom .footer-telecom {
            color: #64748b;
        }

        .footer-social a {
            color: #94a3b8;
            margin-left: 18px;
            font-size: 1.2rem;
            transition: color 0.2s;
        }

        .footer-social a:hover {
            color: #60a5fa;
        }

        /* 右侧居中容器 */
        .side-float {
            position: fixed;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .float-item {
            position: relative;
            display: flex;
            justify-content: flex-end;
            align-items: center;
        }

        /* 圆形按钮样式 */
        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: #333;
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
            transition: background-color 0.3s;
            color: #fff; /* 图标颜色 */
            font-size: 22px; /* 图标大小 */
        }

        /* 电话按钮颜色 */
        #phone-btn {
            background-color: #007bff;
        }

        #phone-btn:hover {
            background-color: #0056b3;
        }

        /* 微信按钮颜色 */
        #wechat-btn {
            background-color: #07c160;
        }

        #wechat-btn:hover {
            background-color: #059b4d;
        }

        /* 弹出框样式 */
        .popup {
            position: absolute;
            right: 70px;
            background: #fff;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            opacity: 0;
            visibility: hidden;
            transform: translateX(10px);
            transition: all 0.3s ease;
            white-space: nowrap;
            color: #333; /* 弹出框字体颜色 */
        }

        /* 鼠标悬浮时，显示对应的弹窗 */
        .float-item:hover .popup {
            opacity: 1;
            visibility: visible;
            transform: translateX(0);
        }

        /* 电话弹窗专属样式 */
        #phone-popup {
            font-weight: bold;
            font-size: 18px;
            color: #007bff;
            line-height: 50px;
        }

        /* 微信弹窗专属样式 */
        #wechat-popup {
            text-align: center;
            padding: 10px;
        }

        #wechat-popup img {
            width: 160px;
            height: 160px;
            display: block;
        }

        /* 小屏适配 */
        @media (max-width: 768px) {
            .float-widget {
                right: 12px;
                gap: 12px;
            }

            .float-widget .float-item {
                width: 48px;
                height: 48px;
            }

            .float-widget .float-icon {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }

            .float-widget .float-item:hover {
                width: 200px;
            }

            .float-widget .float-item:hover .float-content {
                width: 152px;
                padding: 0 12px 0 16px;
            }

            .float-content .phone-number {
                font-size: 0.8rem;
            }

            .float-content .wechat-qr img {
                width: 32px;
                height: 32px;
            }

            .float-content .wechat-qr .qr-label {
                font-size: 0.75rem;
            }

            .float-content .phone-call-btn {
                width: 28px;
                height: 28px;
                font-size: 0.7rem;
            }
        }

        @media (max-width: 480px) {
            .float-widget {
                right: 8px;
                gap: 10px;
                top: 55%;
            }

            .float-widget .float-item {
                width: 42px;
                height: 42px;
            }

            .float-widget .float-icon {
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }

            .float-widget .float-item:hover {
                width: 170px;
            }

            .float-widget .float-item:hover .float-content {
                width: 128px;
                padding: 0 10px 0 14px;
            }

            .float-content .phone-number {
                font-size: 0.7rem;
            }

            .float-content .wechat-qr img {
                width: 28px;
                height: 28px;
            }

            .float-content .wechat-qr .qr-label {
                font-size: 0.65rem;
            }

            .float-content .phone-call-btn {
                width: 24px;
                height: 24px;
                font-size: 0.6rem;
            }
        }

        /* ======================================================
                   模态框系统
                   ====================================================== */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(15, 23, 42, 0.6);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            z-index: 9999;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 24px;
            animation: fadeIn 0.25s ease;
        }

        .modal-overlay.active {
            display: flex;
        }

        .modal-box {
            background: #fff;
            border-radius: 32px;
            max-width: 520px;
            width: 100%;
            padding: 40px 36px 36px;
            position: relative;
            box-shadow: 0 40px 80px rgba(0, 0, 0, 0.3);
            animation: slideUp 0.35s ease;
            max-height: 90vh;
            overflow-y: auto;
        }

        .modal-box .modal-close {
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 1.6rem;
            color: #94a3b8;
            cursor: pointer;
            transition: color 0.2s, transform 0.2s;
            background: none;
            border: none;
            line-height: 1;
        }

        .modal-box .modal-close:hover {
            color: #1e293b;
            transform: rotate(90deg);
        }

        .modal-box .modal-icon {
            font-size: 2.8rem;
            color: #2563eb;
            margin-bottom: 12px;
        }

        .modal-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }

        .modal-box .modal-desc {
            color: #64748b;
            font-size: 0.95rem;
            margin-bottom: 24px;
        }

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

        .modal-box .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.85rem;
            color: #334155;
            margin-bottom: 4px;
        }

        .modal-box .form-group input,
        .modal-box .form-group select,
        .modal-box .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1.5px solid #e2e8f0;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border-color 0.25s, box-shadow 0.25s;
            background: #f8fafc;
        }

        .modal-box .form-group input:focus,
        .modal-box .form-group select:focus,
        .modal-box .form-group textarea:focus {
            outline: none;
            border-color: #2563eb;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
            background: #fff;
        }

        .modal-box .form-group textarea {
            resize: vertical;
            min-height: 80px;
        }

        .modal-box .btn-submit {
            width: 100%;
            padding: 14px;
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
            margin-top: 6px;
        }

        .modal-box .btn-submit:hover {
            background: #1d4ed8;
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(37, 99, 235, 0.4);
        }

        .modal-box .form-success {
            display: none;
            text-align: center;
            padding: 20px 0;
        }

        .modal-box .form-success .success-icon {
            font-size: 4rem;
            color: #22c55e;
            margin-bottom: 16px;
        }

        .modal-box .form-success h3 {
            font-size: 1.4rem;
            color: #0f172a;
            margin-bottom: 8px;
        }

        .modal-box .form-success p {
            color: #64748b;
        }

        /* ===== 动画 ===== */
        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(40px) scale(0.96);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }

        /* ===== 滚动动画 ===== */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.7s ease;
        }

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

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .product-grid {
                grid-template-columns: repeat(3, 1fr);
            }

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

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

            .hero-content p {
                margin-left: auto;
                margin-right: auto;
            }

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

            .hero-visual svg {
                max-width: 400px;
            }

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

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

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                background: #fff;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                padding: 24px;
                gap: 20px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
                border-bottom: 1px solid #eef2f6;
            }

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

            .hamburger {
                display: flex;
            }

            .hero {
                padding: 120px 0 60px;
            }

            .hero-content h1 {
                font-size: 1.2rem;
                white-space: normal;
                line-height: 1.4;
            }

            .hero-stats {
                flex-direction: column;
                gap: 20px;
                align-items: center;
            }

    
    
        .product-grid,
            .adv-grid,
            .trust-grid,
            .news-grid {
                grid-template-columns: 1fr;
            }

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

            .footer-bottom {
                flex-direction: column;
                gap: 16px;
            }

            .btn-outline {
                margin-left: 0;
                margin-top: 12px;
            }

            .modal-box {
                padding: 28px 20px 24px;
            }

            .modal-box h2 {
                font-size: 1.3rem;
            }
        }


    /* ===== 新闻资讯三栏（haoma360 效果：透明无卡片 + 点线行） ===== */
        .news-section {
            background: #f6f8fb;
            overflow: hidden;
        }

        .news-section .news-columns {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 56px;
        }

        .news-col h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 18px;
            padding-bottom: 12px;
            position: relative;
        }

        .news-col h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 32px;
            height: 3px;
            border-radius: 2px;
            background: #2563eb;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 0;
        }

        .news-item a.news-title {
            flex: 1;
            min-width: 0;
            font-size: 0.9rem;
            color: #475569;
            line-height: 1.6;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color 0.2s;
        }

        .news-item a.news-title:hover {
            color: #2563eb;
        }

        .news-item .news-date {
            flex-shrink: 0;
            font-size: 0.8rem;
            color: #94a3b8;
            font-family: 'Inter', sans-serif;
        }

        @media (max-width: 900px) {
            .news-section .news-columns {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }
    
        /* ===== 产品服务下拉菜单 ===== */
        .nav-dd { position: relative; }
        .nav-dd > a .dd-arrow { font-size: 10px; margin-left: 4px; transition: transform .25s; display: inline-block; }
        .nav-dd:hover > a .dd-arrow { transform: rotate(180deg); }
        .nav-dd::after { content: ''; position: absolute; left: 0; right: 0; top: 100%; height: 18px; }
        .dd-menu {
            position: absolute; top: calc(100% + 16px); left: 50%;
            transform: translateX(-50%) translateY(8px);
            min-width: 250px; background: #fff; border-radius: 14px;
            box-shadow: 0 18px 50px rgba(15, 23, 42, .14);
            border: 1px solid #eef2f6; padding: 10px; margin: 0;
            opacity: 0; visibility: hidden; transition: all .25s; list-style: none; z-index: 1100;
        }
        .nav-dd:hover .dd-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
        .dd-menu li { width: 100%; }
        .dd-menu li a { display: flex; align-items: center; gap: 12px; padding: 11px 14px; border-radius: 10px; }
        .dd-menu li a::after { display: none; }
        .dd-menu li a:hover { background: #f1f5ff; }
        .dd-menu li a i.fa-database, .dd-menu li a i.fa-robot, .dd-menu li a i.fa-headset, .dd-menu li a i.fa-users, .dd-menu li a i.fa-user-shield {
            width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
            background: #e8effd; color: #2563eb; border-radius: 9px; font-size: 14px; flex-shrink: 0;
        }
        .dd-menu li a b { display: block; font-size: .9rem; color: #1e293b; font-weight: 600; }
        .dd-menu li a span { display: block; font-size: .74rem; color: #94a3b8; margin-top: 2px; }
        @media (max-width: 768px) {
            .nav-dd::after { display: none; }
            .dd-menu {
                position: static; opacity: 1; visibility: visible; transform: none;
                box-shadow: none; border: none; background: #f8fafc;
                min-width: 0; width: 100%; padding: 6px 0 6px 10px; margin-top: 6px;
            }
        }

        /* ===== 产品服务下拉菜单 ===== */
        .nav-dd { position: relative; }
        .nav-dd > a .dd-arrow { font-size: 10px; margin-left: 4px; transition: transform .25s; display: inline-block; }
        .nav-dd:hover > a .dd-arrow { transform: rotate(180deg); }
        .nav-dd::after { content: ''; position: absolute; left: 0; right: 0; top: 100%; height: 18px; }
        .dd-menu {
            position: absolute; top: calc(100% + 16px); left: 50%;
            transform: translateX(-50%) translateY(8px);
            min-width: 250px; background: #fff; border-radius: 14px;
            box-shadow: 0 18px 50px rgba(15, 23, 42, .14);
            border: 1px solid #eef2f6; padding: 10px; margin: 0;
            opacity: 0; visibility: hidden; transition: all .25s; list-style: none; z-index: 1100;
        }
        .nav-dd:hover .dd-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
        .dd-menu li { width: 100%; }
        .dd-menu li a { display: flex; align-items: center; gap: 12px; padding: 11px 14px; border-radius: 10px; }
        .dd-menu li a::after { display: none; }
        .dd-menu li a:hover { background: #f1f5ff; }
        .dd-menu li a i.fa-database, .dd-menu li a i.fa-robot, .dd-menu li a i.fa-headset, .dd-menu li a i.fa-users, .dd-menu li a i.fa-user-shield {
            width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
            background: #e8effd; color: #2563eb; border-radius: 9px; font-size: 14px; flex-shrink: 0;
        }
        .dd-menu li a b { display: block; font-size: .9rem; color: #1e293b; font-weight: 600; }
        .dd-menu li a span { display: block; font-size: .74rem; color: #94a3b8; margin-top: 2px; }
        @media (max-width: 768px) {
            .nav-dd::after { display: none; }
            .dd-menu {
                position: static; opacity: 1; visibility: visible; transform: none;
                box-shadow: none; border: none; background: #f8fafc;
                min-width: 0; width: 100%; padding: 6px 0 6px 10px; margin-top: 6px;
            }
        }