* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", sans-serif;
        }
        :root {
            --main-color: #0088ff;
            --dark-bg: #0f141e;
            --card-bg: #1a212f;
            --text-white: #f0f4f9;
            --text-gray: #a0a9b8;
            --btn-gradient: linear-gradient(135deg, #0077ee, #00b3ff);
        }
        body {
            background-color: var(--dark-bg);
            color: var(--text-white);
            line-height: 1.7;
        }
        /* 导航栏 */
        header {
            background-color: #141a26;
            border-bottom: 1px solid #232d3f;
            position: sticky;
            top: 0;
            z-index: 99;
        }
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }
        .logo {
            font-size: 22px;
            font-weight: bold;
            color: var(--main-color);
            text-decoration: none;
        }
        .nav-list {
            display: flex;
            gap: 35px;
        }
        .nav-list a {
            color: var(--text-gray);
            text-decoration: none;
            font-size: 15px;
            transition: 0.3s;
        }
        .nav-list a:hover {
            color: var(--main-color);
        }
        .download-nav-btn {
            padding: 8px 20px;
            background: var(--btn-gradient);
            border-radius: 4px;
            color: #fff !important;
        }
        /* 移动端导航适配 */
        @media(max-width:768px) {
            .nav-list {
                display: none;
            }
            .nav-container {
                height: 60px;
            }
            .logo {
                font-size: 18px;
            }
        }
        /* 通用容器 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* 头部三张展示图模块 */
        .banner-wrap {
            padding: 40px 0;
        }
        .banner-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .banner-card {
            background: var(--card-bg);
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid #2a3549;
        }
        .banner-img-box {
            width: 100%;
            height: 200px;
            background: #252f40;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-gray);
        }
        .banner-text {
            padding: 15px;
        }
        .banner-text h3 {
            margin-bottom: 8px;
            color: var(--main-color);
        }
        @media(max-width:992px) {
            .banner-row {
                grid-template-columns: repeat(2,1fr);
            }
        }
        @media(max-width:576px) {
            .banner-row {
                grid-template-columns: 1fr;
            }
            .banner-img-box {
                height: 160px;
            }
        }
        /* 主下载区块 */
        .download-block {
            padding: 60px 0;
            text-align: center;
            background: radial-gradient(circle at center, #152238 0%, var(--dark-bg) 70%);
        }
        .download-block h2 {
            font-size: 32px;
            margin-bottom: 15px;
        }
        .download-block p {
            color: var(--text-gray);
            max-width: 700px;
            margin: 0 auto 30px;
            font-size: 16px;
        }
        .download-btn-wrap {
            display: flex;
            gap: 18px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .download-btn {
            display: inline-block;
            padding: 14px 36px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: bold;
            font-size: 17px;
            transition: all 0.2s;
        }
        .btn-main {
            background: var(--btn-gradient);
            color: #fff;
        }
        .btn-secondary {
            background: transparent;
            border: 2px solid var(--main-color);
            color: var(--main-color);
        }
        .download-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 18px #0066ff40;
        }
        /* 功能卡片区域 */
        .section-title {
            text-align: center;
            font-size: 28px;
            margin-bottom: 40px;
            padding-top: 60px;
            position: relative;
        }
        .section-title::after {
            content: "";
            width: 70px;
            height: 3px;
            background: var(--main-color);
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: -10px;
        }
        .func-grid {
            display: grid;
            grid-template-columns: repeat(4,1fr);
            gap: 22px;
            padding-bottom: 40px;
        }
        .func-card {
            background: var(--card-bg);
            padding: 25px 20px;
            border-radius: 8px;
            border: 1px solid #273246;
        }
        .func-icon {
            width: 50px;
            height: 50px;
            background: #1e293b;
            border-radius: 6px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--main-color);
            font-size: 24px;
        }
        .func-card h4 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .func-card p {
            color: var(--text-gray);
            font-size: 14px;
        }
        @media(max-width:1024px) {
            .func-grid {
                grid-template-columns: repeat(2,1fr);
            }
        }
        @media(max-width:576px) {
            .func-grid {
                grid-template-columns: 1fr;
            }
        }
        /* 功能详细介绍 */
        .intro-wrap {
            padding: 40px 0 60px;
        }
        .intro-item {
            background: var(--card-bg);
            padding: 30px;
            border-radius: 10px;
            margin-bottom: 25px;
            border: 1px solid #273246;
        }
        .intro-item h3 {
            color: var(--main-color);
            margin-bottom: 12px;
            font-size: 20px;
        }
        .intro-item ul {
            padding-left: 20px;
            color: var(--text-gray);
        }
        /* 部署教程模块 */
        .tutorial-wrap {
            padding-bottom: 60px;
        }
        .step-list {
            background: var(--card-bg);
            border-radius: 10px;
            padding: 30px;
        }
        .step-item {
            display: flex;
            gap: 18px;
            margin-bottom: 24px;
        }
        .step-num {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
            background: var(--main-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }
        .step-text h4 {
            margin-bottom: 6px;
        }
        .step-text p {
            color: var(--text-gray);
        }
        /* FAQ常见问题 */
        .faq-wrap {
            padding-bottom: 60px;
        }
        .faq-box {
            background: var(--card-bg);
            border-radius: 10px;
            overflow: hidden;
        }
        .faq-item {
            border-bottom: 1px solid #273246;
            padding: 20px 25px;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-q {
            font-weight: bold;
            font-size: 17px;
            margin-bottom: 8px;
            color: var(--main-color);
        }
        .faq-a {
            color: var(--text-gray);
        }
        /* 底部信息模块 */
        footer {
            background: #0a0e16;
            border-top: 1px solid #232d3f;
            padding: 50px 0 30px;
        }
        .footer-row {
            display: grid;
            grid-template-columns: repeat(3,1fr);
            gap: 30px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-size: 18px;
            margin-bottom: 18px;
            color: var(--main-color);
        }
        .footer-col p, .footer-col a {
            color: var(--text-gray);
            font-size: 14px;
            text-decoration: none;
            line-height: 2;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #1b2330;
            color: #778293;
            font-size: 13px;
        }
        @media(max-width:768px) {
            .footer-row {
                grid-template-columns: 1fr;
                gap: 35px;
            }
        }