/* ========== 全局重置 & 基础 ========== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        body {
            background: #f5f7fa;
            color: #333;
            line-height: 1.6;
            padding-bottom: 0px;
            scroll-behavior: smooth;
        }

        a {
            text-decoration: none;
            color: inherit;
            cursor: pointer;
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            display: block;
        }

        /* ========== 颜色变量 ========== */
        :root {
            --primary: #1a7bff;
            --primary-dark: #0e5fd4;
            --primary-light: #e8f0fe;
            --orange: #ff7a2f;
            --gray-bg: #f5f7fa;
            --text-dark: #222;
            --text-gray: #666;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --radius: 12px;
        }

        /* ========== 顶部导航 ========== */
        .header {
            background: #fff;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 999;
            padding: 0 16px;
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            position: relative;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
        }
        .logo i {
            font-size: 28px;
            color: var(--primary);
        }
        .logo span {
            color: var(--text-dark);
        }
        .logo .sub {
            font-size: 12px;
            font-weight: 400;
            color: var(--text-gray);
            margin-left: 4px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-menu a {
            font-size: 15px;
            color: var(--text-dark);
            font-weight: 500;
            transition: color 0.2s;
            position: relative;
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--primary);
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-menu .nav-phone {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--orange);
            font-weight: 600;
            font-size: 16px;
            background: #fff5ed;
            padding: 4px 14px;
            border-radius: 20px;
            border: 1px solid #ffdcc4;
            margin-left: 8px;
        }
        .nav-menu .nav-phone i {
            font-size: 14px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
            background: none;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-dark);
            border-radius: 4px;
            transition: 0.3s;
        }

        /* ========== 移动端导航抽屉 ========== */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 998;
            backdrop-filter: blur(2px);
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav-inner {
            background: #fff;
            padding: 24px 20px;
            max-height: calc(100vh - 60px);
            overflow-y: auto;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            border-radius: 0 0 20px 20px;
        }
        .mobile-nav-inner a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid #f0f0f0;
            color: var(--text-dark);
        }
        .mobile-nav-inner a:last-child {
            border-bottom: none;
        }
        .mobile-nav-inner a i {
            margin-right: 10px;
            color: var(--primary);
            width: 20px;
            text-align: center;
        }
        .mobile-nav-inner .m-phone {
            margin-top: 16px;
            background: var(--primary);
            color: #fff;
            padding: 14px;
            border-radius: var(--radius);
            text-align: center;
            font-weight: 600;
            font-size: 18px;
            border: none;
        }
        .mobile-nav-inner .m-phone i {
            margin-right: 8px;
        }

        /* ========== Banner ========== */
        .banner {
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, #0a4b9e, #1a7bff);
            min-height: 340px;
            display: flex;
            align-items: center;
            padding: 0 16px;
            scroll-margin-top: 60px;
        }
        .banner-slide {
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 30px 0;
            gap: 30px;
            flex-wrap: wrap;
        }
        .banner-text {
            flex: 1 1 400px;
            color: #fff;
        }
        .banner-text h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 12px;
        }
        .banner-text h1 span {
            color: #ffd966;
        }
        .banner-text p {
            font-size: 16px;
            opacity: 0.9;
            margin-bottom: 20px;
            max-width: 480px;
        }
        .banner-btns {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: 0.25s;
        }
        .btn-primary {
            background: #fff;
            color: var(--primary);
        }
        .btn-primary:hover {
            background: #f0f4ff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 255, 255, 0.25);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
        }

        .banner-image {
            flex: 0 0 280px;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .banner-image .phone-mock {
            width: 200px;
            height: 320px;
            background: #0a2e5e;
            border-radius: 30px;
            border: 3px solid rgba(255, 255, 255, 0.2);
            padding: 16px 12px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: #fff;
            text-align: center;
        }
        .phone-mock .number-display {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: 2px;
            color: #ffd966;
            margin-bottom: 6px;
            line-height: 1.2;
        }
        .phone-mock .number-display small {
            font-size: 20px;
            font-weight: 400;
            opacity: 0.7;
        }
        .phone-mock .label {
            font-size: 13px;
            opacity: 0.7;
        }
        .phone-mock .tag {
            background: rgba(255, 255, 255, 0.15);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 12px;
            margin-top: 10px;
        }

        /* ========== 快捷入口 ========== */
        .quick-entry {
            max-width: 1200px;
            margin: -30px auto 30px;
            padding: 0 16px;
            position: relative;
            z-index: 2;
        }
        .quick-entry-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 20px 16px;
        }
        .quick-item {
            text-align: center;
            padding: 12px 4px;
            border-radius: 10px;
            transition: 0.2s;
            cursor: pointer;
        }
        .quick-item:hover {
            background: var(--primary-light);
        }
        .quick-item .icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .quick-item .name {
            font-size: 14px;
            font-weight: 500;
        }
        .quick-item .desc {
            font-size: 12px;
            color: var(--text-gray);
            margin-top: 2px;
        }

        /* ========== 通用标题 ========== */
        .section-title {
            text-align: center;
            margin-bottom: 32px;
        }
        .section-title h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .section-title h2 span {
            color: var(--primary);
        }
        .section-title p {
            color: var(--text-gray);
            font-size: 15px;
            margin-top: 6px;
        }

        /* ========== 各内容区域通用样式 ========== */
        .content-section {
            max-width: 1200px;
            margin: 40px auto 20px;
            padding: 0 16px;
            scroll-margin-top: 70px;
        }
        .content-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 30px 24px;
            box-shadow: var(--shadow);
            border: 1px solid #f0f0f0;
        }
        .content-card h3 {
            font-size: 22px;
            margin-bottom: 16px;
            color: var(--text-dark);
        }
        .content-card p {
            color: var(--text-gray);
            line-height: 1.8;
        }
        .content-card ul {
            padding-left: 20px;
            list-style: disc;
            color: var(--text-gray);
        }
        .content-card ul li {
            margin-bottom: 8px;
        }

        /* ========== 精选靓号卡片 ========== */
        .number-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 10px;
        }
        .number-card {
            background: #fafbff;
            border-radius: var(--radius);
            padding: 24px 16px;
            text-align: center;
            border: 1px solid #e9ecf5;
            transition: 0.3s;
            box-shadow: 0 2px 8px rgba(0,0,0,0.04);
        }
        .number-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
            box-shadow: 0 8px 24px rgba(26,123,255,0.10);
        }
        .number-card .number {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
            background: var(--primary-light);
            display: inline-block;
            padding: 4px 18px;
            border-radius: 30px;
            margin-bottom: 10px;
        }
        .number-card .meaning {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dark);
            margin: 6px 0;
        }
        .number-card .price {
            font-size: 18px;
            font-weight: 700;
            color: var(--orange);
        }
        .number-card .price small {
            font-size: 13px;
            font-weight: 400;
            color: var(--text-gray);
        }
        .number-card .btn-sm {
            display: inline-block;
            margin-top: 12px;
            padding: 6px 24px;
            font-size: 14px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            cursor: pointer;
            transition: 0.2s;
            text-decoration: none;
        }
        .number-card .btn-sm:hover {
            background: var(--primary-dark);
        }

        /* ========== 产品服务 ========== */
        .section-products {
            max-width: 1200px;
            margin: 40px auto 20px;
            padding: 0 16px;
            scroll-margin-top: 70px;
        }
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .product-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 20px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: 0.3s;
            border: 1px solid #f0f0f0;
        }
        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 10px 40px rgba(26, 123, 255, 0.12);
            border-color: var(--primary);
        }
        .product-card .icon {
            font-size: 42px;
            color: var(--primary);
            margin-bottom: 12px;
            display: inline-block;
            background: var(--primary-light);
            padding: 16px;
            border-radius: 50%;
            width: 74px;
            height: 74px;
            line-height: 42px;
        }
        .product-card h3 {
            font-size: 18px;
            margin-bottom: 6px;
        }
        .product-card p {
            font-size: 14px;
            color: var(--text-gray);
            margin-bottom: 14px;
        }
        .product-card .price {
            font-size: 20px;
            font-weight: 700;
            color: var(--orange);
        }
        .product-card .price small {
            font-size: 13px;
            font-weight: 400;
            color: var(--text-gray);
        }
        .product-card .btn-sm {
            display: inline-block;
            margin-top: 12px;
            padding: 8px 28px;
            font-size: 14px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            cursor: pointer;
            transition: 0.2s;
            text-decoration: none;
        }
        .product-card .btn-sm:hover {
            background: var(--primary-dark);
        }

        /* ========== 优势特点 ========== */
        .section-advantages {
            background: #fff;
            padding: 50px 16px;
            margin: 30px 0;
            scroll-margin-top: 70px;
        }
        .advantages-inner {
            max-width: 1200px;
            margin: 0 auto;
        }
        .adv-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .adv-item {
            text-align: center;
            padding: 16px 8px;
        }
        .adv-item .num {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }
        .adv-item .num small {
            font-size: 18px;
            font-weight: 400;
        }
        .adv-item .label {
            font-size: 15px;
            font-weight: 500;
            margin-top: 6px;
            color: var(--text-dark);
        }
        .adv-item .sub {
            font-size: 13px;
            color: var(--text-gray);
        }

        /* ========== 客户案例 ========== */
        .section-cases {
            max-width: 1200px;
            margin: 30px auto;
            padding: 0 16px;
            scroll-margin-top: 70px;
        }
        .case-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .case-item {
            background: #fff;
            border-radius: var(--radius);
            padding: 20px 16px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid #f0f0f0;
            transition: 0.2s;
            cursor: pointer;
        }
        .case-item:hover {
            border-color: var(--primary);
        }
        .case-item .logo-placeholder {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--primary-light);
            margin: 0 auto 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            font-weight: 700;
        }
        .case-item .name {
            font-weight: 600;
            font-size: 15px;
        }
        .case-item .tag {
            font-size: 12px;
            color: var(--text-gray);
            background: #f0f0f0;
            padding: 2px 12px;
            border-radius: 20px;
            display: inline-block;
            margin-top: 4px;
        }

        /* ========== 新闻资讯 ========== */
        .section-news {
            max-width: 1200px;
            margin: 30px auto;
            padding: 0 16px;
            scroll-margin-top: 70px;
        }
        .news-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .news-item {
            background: #fff;
            border-radius: var(--radius);
            padding: 18px 20px;
            box-shadow: var(--shadow);
            display: flex;
            align-items: center;
            gap: 14px;
            transition: 0.2s;
            border: 1px solid #f0f0f0;
            cursor: pointer;
        }
        .news-item:hover {
            border-color: var(--primary);
        }
        .news-item .date {
            flex-shrink: 0;
            text-align: center;
            background: var(--primary-light);
            padding: 6px 12px;
            border-radius: 8px;
            min-width: 56px;
        }
        .news-item .date .day {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
        }
        .news-item .date .month {
            font-size: 12px;
            color: var(--text-gray);
        }
        .news-item .content {
            flex: 1;
        }
        .news-item .content .title {
            font-weight: 600;
            font-size: 15px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .content .summary {
            font-size: 13px;
            color: var(--text-gray);
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-top: 2px;
        }

        /* ========== 底部 ========== */
        .footer {
            background: #0e1a2b;
            color: #b0c4de;
            padding: 40px 16px 24px;
            margin-top: 30px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 14px;
            font-weight: 600;
        }
        .footer-col p,
        .footer-col a {
            font-size: 14px;
            color: #b0c4de;
            line-height: 2;
            display: block;
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            max-width: 1200px;
            margin: 30px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            font-size: 13px;
            color: #6a7f9e;
        }
        .footer-bottom .company {
            color: #b0c4de;
            font-weight: 500;
        }

        /* ========== 浮动按钮 ========== */
        .float-btns {
            position: fixed;
            right: 16px;
            bottom: 80px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 900;
        }
        .float-btns a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 22px;
            box-shadow: 0 6px 24px rgba(26, 123, 255, 0.35);
            transition: 0.2s;
        }
        .float-btns a:hover {
            transform: scale(1.06);
            background: var(--primary-dark);
        }
        .float-btns .phone-btn {
            background: var(--orange);
            box-shadow: 0 6px 24px rgba(255, 122, 47, 0.35);
        }
        .float-btns .phone-btn:hover {
            background: #e0661a;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .adv-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .number-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .nav-phone {
                display: none;
            }

            .header-inner {
                height: 56px;
            }
            .logo {
                font-size: 18px;
            }
            .logo .sub {
                display: none;
            }

            .banner {
                min-height: 280px;
                padding: 0 14px;
            }
            .banner-text h1 {
                font-size: 26px;
            }
            .banner-text p {
                font-size: 14px;
            }
            .banner-image {
                flex: 0 0 180px;
            }
            .banner-image .phone-mock {
                width: 150px;
                height: 240px;
                padding: 12px;
            }
            .phone-mock .number-display {
                font-size: 26px;
            }
            .btn {
                padding: 10px 24px;
                font-size: 14px;
            }

            .quick-entry-grid {
                grid-template-columns: repeat(2, 1fr);
                padding: 16px 12px;
            }

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

            .adv-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .adv-item .num {
                font-size: 30px;
            }

            .case-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .news-list {
                grid-template-columns: 1fr;
            }
            .news-item {
                padding: 14px 16px;
            }

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .float-btns {
                right: 12px;
                bottom: 70px;
            }
            .float-btns a {
                width: 46px;
                height: 46px;
                font-size: 18px;
            }
            .number-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .number-card .number {
                font-size: 20px;
            }
        }

        @media (max-width: 480px) {
            .product-grid {
                grid-template-columns: 1fr;
            }
            .banner-text h1 {
                font-size: 22px;
            }
            .banner-image {
                flex: 0 0 140px;
            }
            .banner-image .phone-mock {
                width: 120px;
                height: 200px;
                padding: 10px;
            }
            .phone-mock .number-display {
                font-size: 20px;
            }
            .section-title h2 {
                font-size: 22px;
            }
            .case-grid {
                grid-template-columns: 1fr 1fr;
            }
            .quick-entry-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .quick-item .icon {
                font-size: 22px;
            }
            .quick-item .name {
                font-size: 13px;
            }
            .quick-item .desc {
                font-size: 11px;
            }
            .number-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 工具类 ========== */
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .wechat-btn {
            display: inline-block;
            background: #07c160;
            color: #fff;
            padding: 10px 28px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: 0.2s;
            margin-top: 10px;
        }
        .wechat-btn:hover {
            background: #06ad56;
            transform: scale(1.02);
        }