/* 全局样式 */
    @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;700&family=Merriweather:wght@400;700&display=swap');

    :root {
        --primary-color: #0A192F;
        --secondary-color: #6C5CE7;
        --gradient-purple: linear-gradient(135deg, #6C5CE7, #B8E9FF);
        --highlight-color: #FFD700;
        --text-color: #FFFFFF;
        --background-gradient: radial-gradient(circle, rgba(255,87,34,0.5), transparent);
        --transition-speed: 0.3s;
    }

    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    body {
        font-family: 'Merriweather', serif;
        background: var(--gradient-purple);
        color: var(--text-color);
        line-height: 1.6;
        overflow-x: hidden;
    }

    h1, h2, h3, h4, h5, h6 {
        font-family: 'Poppins', sans-serif;
        margin-bottom: 1rem;
    }

    h1 {
        font-size: 3rem;
        color: var(--highlight-color);
        text-align: center;
        margin: 2rem 0;
    }

    h2 {
        font-size: 2.5rem;
        margin-top: 2rem;
    }

    h3 {
        font-size: 2rem;
        margin-top: 1.5rem;
    }

    p {
        font-size: 1rem;
        margin-bottom: 1rem;
    }

    pre {
        background: #1e2a38;
        padding: 1rem;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 1rem;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #FFD700;
    }

    a {
        color: var(--highlight-color);
        text-decoration: none;
        transition: color var(--transition-speed);
    }

    a:hover {
        color: #B8E9FF;
    }

    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(10, 25, 47, 0.8);
        padding: 1rem 2rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
    }

    .navbar a {
        margin-left: 1rem;
        font-weight: 700;
    }

    .hero {
        height: 100vh;
        background: var(--background-gradient);
        display: flex;
        justify-content: center;
        align-items: center;
        text-align: center;
        position: relative;
        animation: aurora-move 15s linear infinite;
    }

    @keyframes aurora-move {
        0% { background: radial-gradient(circle, #FF5722, transparent); }
        50% { background: radial-gradient(circle, #FF5722, rgba(255, 255, 255, 0.5)); }
        100% { background: radial-gradient(circle, #FF5722, transparent); }
    }

    .hero h1 {
        font-size: 2.5rem;
        padding: 0 1rem;
    }

    .section {
        padding: 4rem 2rem;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .section:nth-child(even) {
        background: rgba(10, 25, 47, 0.9);
    }

    .section:nth-child(odd) {
        background: rgba(10, 25, 47, 0.7);
    }

    .grid-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 2rem;
    }

    .grid-item {
        background: rgba(255, 255, 255, 0.1);
        padding: 2rem;
        border-radius: 10px;
        transition: transform var(--transition-speed);
    }

    .grid-item:hover {
        transform: scale(1.05);
    }

    .button {
        padding: 0.75rem 1.5rem;
        background: var(--highlight-color);
        color: var(--primary-color);
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: background var(--transition-speed), transform var(--transition-speed);
        font-weight: bold;
    }

    .button:hover {
        background: #B8E9FF;
        transform: scale(1.05);
    }

    .code-block {
        background: #1e2a38;
        padding: 1rem;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 1rem;
    }

    .code-block code {
        color: #FFD700;
        font-family: 'Courier New', Courier, monospace;
    }

    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
        justify-content: center;
        margin-top: 2rem;
    }

    .image-gallery img {
        width: 150px;
        height: 150px;
        object-fit: cover;
        border-radius: 10px;
    }

    .footer {
        background: rgba(10, 25, 47, 0.9);
        text-align: center;
        padding: 2rem;
        color: #B8E9FF;
    }

    /* 响应式设计 */
    @media (max-width: 1200px) {
        h1 {
            font-size: 2.5rem;
        }
        .hero h1 {
            font-size: 2rem;
        }
    }

    @media (max-width: 1024px) {
        .navbar {
            flex-direction: column;
        }
        .grid-container {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 768px) {
        .section {
            padding: 2rem 1rem;
        }
        h1 {
            font-size: 2rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.5rem;
        }
    }

    @media (max-width: 480px) {
        .hero h1 {
            font-size: 1.5rem;
        }
        .button {
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
        }
    }

    @media (max-width: 320px) {
        h1 {
            font-size: 1.5rem;
        }
        .image-gallery img {
            width: 100px;
            height: 100px;
        }
    }