/* 全局样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Poppins', sans-serif;
        background: linear-gradient(135deg, #0000ff, #8a2be2);
        color: #ffffff;
        line-height: 1.6;
        overflow-x: hidden;
    }

    a {
        color: #ff4500;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #ffffff;
    }

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

    /* 头部 */
    header {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.7);
        padding: 10px 0;
        z-index: 1000;
        transition: background 0.3s ease;
    }

    header.scrolled {
        background: rgba(0, 0, 0, 0.9);
    }

    header .logo {
        font-size: 24px;
        font-weight: bold;
        text-align: center;
    }

    /* 导航 */
    nav {
        display: flex;
        justify-content: center;
        gap: 30px;
        margin-top: 60px;
    }

    nav a {
        font-size: 18px;
        position: relative;
    }

    nav a::after {
        content: '';
        width: 0;
        height: 2px;
        background: #ff4500;
        position: absolute;
        left: 0;
        bottom: -5px;
        transition: width 0.3s;
    }

    nav a:hover::after {
        width: 100%;
    }

    /* 主视觉 */
    .hero {
        height: 100vh;
        background: url('https://images.gptkong.com/demo/sample1.png') center/cover no-repeat;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        animation: aurora-move 15s linear infinite;
    }

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle, rgba(255,87,34,0.5), transparent);
        z-index: 1;
    }

    .hero-content {
        position: relative;
        z-index: 2;
        text-align: center;
    }

    .hero h1 {
        font-size: 48px;
        margin-bottom: 20px;
        color: #ffffff;
    }

    .hero p {
        font-size: 20px;
    }

    /* 文章内容 */
    .content {
        padding: 100px 0 50px 0;
    }

    .content h2, .content h3, .content h4 {
        color: #ff4500;
        margin-bottom: 20px;
    }

    .content p {
        margin-bottom: 20px;
        color: #ffffff;
    }

    .content pre {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 5px;
        overflow: auto;
    }

    .content code {
        color: #00ff00;
        font-family: 'Courier New', Courier, monospace;
    }

    .content table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }

    .content th, .content td {
        border: 1px solid #ffffff;
        padding: 10px;
        text-align: left;
    }

    .content th {
        background: #00008b;
    }

    /* 图片展示 */
    .gallery {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
        margin-bottom: 20px;
    }

    .gallery img {
        width: 100%;
        border-radius: 5px;
    }

    /* 提示信息 */
    .note {
        background: rgba(255, 165, 0, 0.2);
        padding: 15px;
        border-left: 5px solid #ffa500;
        margin-bottom: 20px;
    }

    /* 响应式设计 */
    @media (max-width: 320px) {
        .hero h1 {
            font-size: 24px;
        }

        nav {
            flex-direction: column;
            gap: 15px;
        }
    }

    @media (min-width: 321px) and (max-width: 480px) {
        .hero h1 {
            font-size: 28px;
        }

        nav a {
            font-size: 16px;
        }
    }

    @media (min-width: 481px) and (max-width: 768px) {
        .hero h1 {
            font-size: 36px;
        }

        .content h2 {
            font-size: 28px;
        }
    }

    @media (min-width: 769px) and (max-width: 1024px) {
        .hero h1 {
            font-size: 40px;
        }

        .content h2 {
            font-size: 32px;
        }
    }

    @media (min-width: 1025px) and (max-width: 1200px) {
        .hero h1 {
            font-size: 44px;
        }

        .content h2 {
            font-size: 36px;
        }
    }

    @media (min-width: 1201px) {
        .hero h1 {
            font-size: 48px;
        }

        .content h2 {
            font-size: 40px;
        }
    }

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