/* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0047ab, #6f0391, #1e90ff);
        background-size: 200% 200%;
        animation: gradient-animation 10s ease infinite;
        color: #f0f0f0;
        overflow-x: hidden;
    }

    @keyframes gradient-animation {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    a {
        color: #1e90ff;
        text-decoration: none;
    }

    a[rel="nofollow"] {
        /* 不同状态的链接样式 */
        color: #ff69b4;
    }

    header {
        position: fixed;
        width: 100%;
        top: 0;
        left: 0;
        background: rgba(0, 0, 0, 0.6);
        padding: 20px 0;
        z-index: 1000;
    }

    .nav-container {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 30px;
    }

    .nav-item {
        width: 50px;
        height: 50px;
        background: rgba(255, 215, 0, 0.8);
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .nav-item:hover {
        transform: scale(1.1);
        box-shadow: 0 0 15px rgba(255, 215, 0, 0.6);
    }

    main {
        padding: 100px 20px 50px 20px;
        max-width: 1200px;
        margin: 0 auto;
    }

    .intro {
        text-align: center;
        margin-bottom: 50px;
    }

    .intro h1 {
        font-family: 'Futura', sans-serif;
        font-size: 3rem;
        color: #ffffff;
        text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
        margin-bottom: 20px;
    }

    .intro p {
        font-size: 1.2rem;
        line-height: 1.8;
        color: #dcdcdc;
    }

    .features {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
        margin-bottom: 50px;
    }

    .feature-card {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 15px;
        padding: 20px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.3);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .feature-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 25px rgba(0,0,0,0.4);
    }

    .feature-card img {
        width: 100%;
        border-radius: 10px;
        margin-bottom: 15px;
    }

    .feature-card h3 {
        font-family: 'Futura', sans-serif;
        font-size: 1.5rem;
        margin-bottom: 10px;
    }

    .feature-card p {
        font-size: 1rem;
        line-height: 1.6;
        color: #e0e0e0;
    }

    .sample-article {
        background: rgba(0, 0, 0, 0.7);
        padding: 30px;
        border-radius: 10px;
        margin-bottom: 50px;
    }

    .sample-article h2 {
        font-family: 'Orbitron', sans-serif;
        font-size: 2rem;
        color: #ff1493;
        margin-bottom: 20px;
        text-align: center;
    }

    .sample-article p, 
    .sample-article h3, 
    .sample-article h4, 
    .sample-article ul {
        color: #f0f0f0;
        line-height: 1.8;
    }

    .sample-article pre {
        background: #2e2e2e;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    .sample-article code {
        color: #00ff7f;
        font-family: 'Courier New', Courier, monospace;
    }

    .gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 15px;
        justify-content: center;
        margin-bottom: 50px;
    }

    .gallery img {
        width: 150px;
        height: 150px;
        object-fit: cover;
        border-radius: 10px;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }

    .gallery img:hover {
        transform: scale(1.1);
        opacity: 0.8;
    }

    footer {
        text-align: center;
        padding: 20px 0;
        background: rgba(0, 0, 0, 0.6);
        color: #dcdcdc;
    }

    .reference-note {
        font-size: 0.9rem;
        margin-top: 10px;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .features {
            grid-template-columns: repeat(3, 1fr);
        }
    }

    @media (max-width: 1200px) {
        .features {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (max-width: 1024px) {
        .features {
            grid-template-columns: 1fr;
        }

        .nav-container {
            gap: 20px;
        }
    }

    @media (max-width: 768px) {
        .intro h1 {
            font-size: 2.5rem;
        }

        .features {
            grid-template-columns: 1fr;
        }

        .gallery img {
            width: 100px;
            height: 100px;
        }
    }

    @media (max-width: 480px) {
        .intro h1 {
            font-size: 2rem;
        }

        .feature-card h3 {
            font-size: 1.2rem;
        }

        .feature-card p {
            font-size: 0.9rem;
        }

        .gallery img {
            width: 80px;
            height: 80px;
        }
    }

    @media (max-width: 320px) {
        .nav-container {
            gap: 15px;
        }

        .intro h1 {
            font-size: 1.8rem;
        }

        .feature-card h3 {
            font-size: 1rem;
        }

        .feature-card p {
            font-size: 0.8rem;
        }

        .gallery img {
            width: 70px;
            height: 70px;
        }
    }