/* 基础样式重置 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    /* 导入Roboto字体 */
    @import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

    /* 全局字体与背景 */
    body {
        font-family: 'Roboto', sans-serif;
        background: radial-gradient(circle, rgba(0, 4, 70, 1) 0%, rgba(28, 181, 224, 1) 70%);
        color: #ffffff;
        line-height: 1.6;
        overflow-x: hidden;
        animation: aurora-move 15s linear infinite;
    }

    /* 动画效果定义 */
    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    /* 页面容器 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }

    /* 头部样式 */
    header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 0;
    }

    .logo {
        font-size: 24px;
        font-weight: bold;
        color: #ff5722;
    }

    nav ul {
        list-style: none;
        display: flex;
    }

    nav ul li {
        margin-left: 20px;
    }

    nav ul li a {
        text-decoration: none;
        color: #ffffff;
        font-weight: 500;
        transition: color 0.3s ease;
    }

    nav ul li a:hover {
        color: #feb47b;
    }

    /* 主视觉区 */
    .hero {
        position: relative;
        height: 60vh;
        background: url('https://images.gptkong.com/demo/sample12.png') center/cover no-repeat;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
    }

    .hero::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
    }

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

    .hero h1 {
        font-size: 48px;
        margin-bottom: 20px;
        background: linear-gradient(45deg, #ff7e5f, #feb47b);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

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

    .btn {
        display: inline-block;
        padding: 10px 20px;
        margin-top: 20px;
        background: #2c3e50;
        color: #ffffff;
        border: none;
        border-radius: 25px;
        cursor: pointer;
        transition: background 0.3s ease, transform 0.3s ease;
        text-decoration: none;
    }

    .btn:hover {
        background: #ff5722;
        transform: scale(1.05);
    }

    /* 内容区 */
    main {
        padding: 40px 0;
    }

    section {
        margin-bottom: 60px;
    }

    section h2 {
        font-size: 32px;
        margin-bottom: 20px;
        color: #ff5722;
        position: relative;
        display: inline-block;
    }

    section h2::after {
        content: '';
        width: 50px;
        height: 3px;
        background: #feb47b;
        position: absolute;
        left: 0;
        bottom: -10px;
    }

    /* 卡片布局 */
    .cards {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
    }

    .card {
        background: rgba(44, 62, 80, 0.8);
        border-radius: 10px;
        padding: 20px;
        flex: 1 1 calc(33.333% - 40px);
        box-shadow: 0 4px 15px rgba(0,0,0,0.3);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 20px rgba(0,0,0,0.5);
    }

    .card img {
        width: 100%;
        border-radius: 5px;
        margin-bottom: 15px;
    }

    .card h3 {
        font-size: 20px;
        margin-bottom: 10px;
        color: #ff5722;
    }

    .card p {
        font-size: 16px;
        color: #ffffff;
    }

    /* 示例展示 */
    .example {
        background: rgba(0, 0, 0, 0.7);
        padding: 20px;
        border-radius: 10px;
    }

    .example h2 {
        color: #feb47b;
    }

    .example pre {
        background: #2c3e50;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    .example code {
        color: #1cb5e0;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .hero h1 {
            font-size: 40px;
        }

        .card {
            flex: 1 1 calc(33.333% - 40px);
        }
    }

    @media (max-width: 1200px) {
        .cards {
            flex-wrap: wrap;
        }

        .card {
            flex: 1 1 calc(50% - 40px);
        }
    }

    @media (max-width: 1024px) {
        .hero h1 {
            font-size: 36px;
        }

        nav ul {
            flex-direction: column;
            align-items: center;
        }

        nav ul li {
            margin: 10px 0;
        }

        .card {
            flex: 1 1 100%;
        }
    }

    @media (max-width: 768px) {
        .hero {
            height: 50vh;
        }

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

        .container {
            width: 95%;
            padding: 10px;
        }
    }

    @media (max-width: 480px) {
        .hero h1 {
            font-size: 24px;
        }

        .card {
            flex: 1 1 100%;
        }
    }

    @media (max-width: 320px) {
        .hero h1 {
            font-size: 20px;
        }

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

    /* 代码块样式 */
    pre {
        background: #1c1c1c;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    code {
        color: #f1c40f;
        font-family: 'Courier New', Courier, monospace;
        font-size: 14px;
    }

    /* 警示语样式 */
    .note {
        background: rgba(255, 255, 255, 0.1);
        padding: 10px;
        border-left: 4px solid #ff5722;
        margin-bottom: 20px;
    }

    /* 页脚样式 */
    footer {
        text-align: center;
        padding: 20px 0;
        background: rgba(0, 0, 0, 0.8);
        color: #ffffff;
        font-size: 14px;
    }

    footer a {
        color: #ff5722;
        text-decoration: none;
    }

    footer a:hover {
        text-decoration: underline;
    }