/* 基础重置 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
        color: #ffffff;
        line-height: 1.6;
        letter-spacing: 0.5px;
    }

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

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

    header .logo {
        font-size: 1.8rem;
        font-weight: bold;
        color: #FFC67D;
    }

    nav ul {
        list-style: none;
        display: flex;
        gap: 20px;
    }

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

    nav ul li a:hover {
        color: #FFC67D;
    }

    /* 主视觉 */
    .hero {
        position: relative;
        height: 80vh;
        background: url('https://images.gptkong.com/demo/sample1.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: radial-gradient(circle, rgba(0,0,0,0.7), transparent);
    }

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

    .hero-content h1 {
        font-size: 3rem;
        margin-bottom: 20px;
        color: #FFC67D;
    }

    .hero-content p {
        font-size: 1.2rem;
        margin-bottom: 30px;
    }

    .cta-button {
        padding: 10px 20px;
        background-color: #FFC67D;
        color: #333;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: transform 0.3s ease, background-color 0.3s ease;
        text-decoration: none;
    }

    .cta-button:hover {
        transform: scale(1.1);
        background-color: #FFB347;
    }

    /* 模块化卡片 */
    .cards {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        margin: 40px 0;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        flex: 1 1 calc(33.333% - 20px);
        transition: box-shadow 0.3s ease;
    }

    .card:hover {
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    }

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

    .card h3 {
        margin-bottom: 10px;
        color: #FFC67D;
    }

    .card p {
        font-size: 1rem;
    }

    /* 示例展示 */
    .example-section {
        background: rgba(255, 255, 255, 0.05);
        padding: 30px;
        border-radius: 10px;
        margin: 40px 0;
    }

    .example-section h2 {
        color: #FFC67D;
        margin-bottom: 20px;
        text-align: center;
    }

    .example-section article {
        max-height: 600px;
        overflow-y: auto;
    }

    .example-section pre {
        background: #1e1e1e;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    .example-section code {
        color: #d4d4d4;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 图片库 */
    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin: 40px 0;
    }

    .image-gallery img {
        width: calc(25% - 10px);
        border-radius: 5px;
    }

    /* 底部 */
    footer {
        text-align: center;
        padding: 20px 0;
        background: rgba(0, 0, 0, 0.5);
        border-top: 1px solid #333;
    }

    footer p {
        color: #ffffff;
        font-size: 0.9rem;
    }

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

    body {
        animation: aurora-move 15s linear infinite;
        background-size: 400% 400%;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .card {
            flex: 1 1 calc(33.333% - 20px);
        }
    }

    @media (max-width: 1200px) {
        .card {
            flex: 1 1 calc(50% - 20px);
        }

        .image-gallery img {
            width: calc(33.333% - 10px);
        }
    }

    @media (max-width: 1024px) {
        nav ul {
            flex-direction: column;
            background: rgba(0, 0, 0, 0.8);
            position: absolute;
            top: 60px;
            right: 20px;
            padding: 20px;
            border-radius: 5px;
            display: none;
        }

        nav ul.active {
            display: flex;
        }

        .menu-toggle {
            display: block;
            cursor: pointer;
            font-size: 1.5rem;
            color: #ffffff;
        }
    }

    @media (max-width: 768px) {
        .cards {
            flex-direction: column;
        }

        .card {
            flex: 1 1 100%;
        }

        .image-gallery img {
            width: calc(50% - 10px);
        }

        .hero-content h1 {
            font-size: 2rem;
        }

        .cta-button {
            padding: 8px 16px;
            font-size: 0.9rem;
        }
    }

    @media (max-width: 480px) {
        .image-gallery img {
            width: 100%;
        }

        nav ul {
            flex-direction: column;
            width: 100%;
        }
    }

    @media (max-width: 320px) {
        .hero-content h1 {
            font-size: 1.5rem;
        }

        .hero-content p {
            font-size: 1rem;
        }

        .cta-button {
            padding: 6px 12px;
            font-size: 0.8rem;
        }
    }