* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", SimHei, sans-serif;
        }
        :root {
            --main-bg: #0a0e1b;
            --second-bg: #12182c;
            --card-bg: #19213a;
            --main-color: #1677ff;
            --highlight: #ff453a;
            --text-white: #f0f4ff;
            --text-gray: #a0a8c3;
            --border-color: #273254;
        }
        body {
            background-color: var(--main-bg);
            color: var(--text-gray);
            line-height: 1.7;
        }
        /* 容器通用 */
        .container {
            width: 92%;
            max-width: 1200px;
            margin: 0 auto;
        }
        /* 顶部导航 */
        header {
            background-color: var(--second-bg);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 99;
        }
        .nav-wrap {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 0;
        }
        .logo {
            font-size: 24px;
            font-weight: bold;
            color: var(--text-white);
        }
        .logo span {
            color: var(--highlight);
        }
        .nav-list {
            display: flex;
            gap: 32px;
        }
        .nav-list a {
            color: var(--text-gray);
            text-decoration: none;
            font-size: 15px;
            transition: 0.2s;
        }
        .nav-list a:hover {
            color: var(--main-color);
        }
        .nav-download-btn {
            background: linear-gradient(90deg, var(--main-color), #0050e6);
            color: #fff;
            padding: 9px 22px;
            border-radius: 4px;
            text-decoration: none;
        }
        .nav-download-btn:hover {
            opacity: 0.9;
        }
        /* 移动端导航适配 */
        @media (max-width:768px) {
            .nav-list {
                display: none;
            }
            .logo {
                font-size: 20px;
            }
        }
        /* 头部三张主图模块 */
        .banner-area {
            padding: 40px 0;
        }
        .banner-box-wrap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .banner-card {
            height: 240px;
            background-color: var(--card-bg);
            border-radius: 8px;
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-white);
            font-size: 18px;
            overflow: hidden;
            position: relative;
        }
        /* 图片占位，替换src为本地图片即可 */
        .banner-card .img-placeholder {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.7;
        }
        .banner-text-mask {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            padding: 12px;
            background: linear-gradient(transparent, rgba(0,0,0,0.75));
        }
        @media (max-width:992px) {
            .banner-box-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width:600px) {
            .banner-box-wrap {
                grid-template-columns: 1fr;
            }
            .banner-card {
                height: 180px;
            }
        }
        /* 通用区块标题 */
        .section-title {
            text-align: center;
            margin: 60px 0 30px;
        }
        .section-title h2 {
            font-size: 28px;
            color: var(--text-white);
            margin-bottom: 8px;
        }
        .section-title p {
            font-size: 15px;
            color: var(--text-gray);
        }
        /* 功能卡片模块 */
        .card-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }
        .func-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 24px;
            transition: all 0.3s;
        }
        .func-card:hover {
            border-color: var(--main-color);
            transform: translateY(-4px);
        }
        .func-card h3 {
            color: var(--text-white);
            font-size: 18px;
            margin: 10px 0 12px;
        }
        .func-card .icon-box {
            width: 46px;
            height: 46px;
            background-color: rgba(22, 119, 255, 0.12);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--main-color);
            font-size: 22px;
        }
        @media (max-width:1024px) {
            .card-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width:600px) {
            .card-wrap {
                grid-template-columns: 1fr;
            }
        }
        /* 功能介绍区块 */
        .intro-area {
            padding: 30px 0;
        }
        .intro-content {
            background: var(--second-bg);
            border-radius: 10px;
            border: 1px solid var(--border-color);
            padding: 35px;
        }
        .intro-content h3 {
            color: var(--text-white);
            margin-bottom: 16px;
            font-size: 20px;
        }
        .intro-content ul {
            padding-left: 20px;
            gap: 10px;
            display: flex;
            flex-direction: column;
        }
        .intro-content li {
            padding-left: 8px;
        }
        .intro-content li strong {
            color: var(--main-color);
        }
        /* 部署教程模块 */
        .tutorial-area {
            margin: 40px 0;
        }
        .tutorial-step {
            background: var(--card-bg);
            border-radius: 8px;
            padding: 22px;
            margin-bottom: 18px;
            border-left: 4px solid var(--main-color);
        }
        .tutorial-step h4 {
            color: var(--text-white);
            font-size: 17px;
            margin-bottom: 8px;
        }
        /* FAQ问答模块 */
        .faq-wrap {
            background: var(--second-bg);
            border-radius: 10px;
            padding: 30px;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-q {
            color: var(--text-white);
            font-weight: 500;
            font-size: 16px;
            margin-bottom: 6px;
        }
        /* 下载中心模块 */
        .download-area {
            margin: 70px 0;
            text-align: center;
            background: linear-gradient(135deg, #0f1730, #152550);
            padding: 50px 20px;
            border-radius: 12px;
        }
        .download-area h2 {
            color: #fff;
            font-size: 30px;
            margin-bottom: 12px;
        }
        .download-area p {
            margin-bottom: 30px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }
        .download-btn-main {
            display: inline-block;
            background: linear-gradient(90deg, var(--highlight), #ff2b2b);
            color: #fff;
            font-size: 18px;
            font-weight: bold;
            padding: 14px 42px;
            border-radius: 6px;
            text-decoration: none;
        }
        .download-btn-main:hover {
            opacity: 0.9;
        }
        /* 底部参数栏 */
        footer {
            background: #050812;
            border-top: 1px solid var(--border-color);
            padding: 45px 0 25px;
            margin-top: 50px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 17px;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: var(--text-gray);
            text-decoration: none;
            margin-bottom: 9px;
            font-size: 14px;
        }
        .footer-col a:hover {
            color: var(--main-color);
        }
        .copyright {
            text-align: center;
            font-size: 13px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }
        @media (max-width:992px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width:600px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }