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

    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #000046, #1cb5e0);
        color: #ffffff;
        line-height: 1.6;
        overflow-x: hidden;
    }

    header {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.7);
        padding: 20px;
        z-index: 1000;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    header h1 {
        font-family: 'Orbitron', sans-serif;
        font-size: 2rem;
        color: #00ff99;
    }

    nav ul {
        list-style: none;
        display: flex;
        gap: 15px;
    }

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

    nav ul li a:hover {
        color: #1cb5e0;
    }

    .hero {
        height: 100vh;
        background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center/cover;
        display: flex;
        justify-content: center;
        align-items: center;
        position: relative;
    }

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

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

    .hero-content h2 {
        font-family: 'Orbitron', sans-serif;
        font-size: 3rem;
        color: #00ff99;
        margin-bottom: 20px;
        text-shadow: 2px 2px 10px rgba(0,0,0,0.7);
    }

    .hero-content p {
        font-size: 1.2rem;
        max-width: 600px;
        margin: 0 auto;
    }

    section {
        padding: 80px 20px;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .section-title {
        font-family: 'Orbitron', sans-serif;
        font-size: 2.5rem;
        color: #00ff99;
        margin-bottom: 40px;
        text-align: center;
    }

    .content-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 40px;
        width: 100%;
        max-width: 1200px;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 15px;
        position: relative;
        overflow: hidden;
        transition: transform 0.3s;
    }

    .card:hover {
        transform: translateY(-10px);
    }

    .card img {
        width: 100%;
        border-radius: 10px;
    }

    .card h3 {
        font-family: 'Orbitron', sans-serif;
        font-size: 1.5rem;
        color: #1cb5e0;
        margin: 15px 0;
    }

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

    pre {
        background: rgba(0, 0, 0, 0.7);
        padding: 15px;
        border-radius: 10px;
        overflow: auto;
        margin: 20px 0;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #00ff99;
    }

    footer {
        background: rgba(0, 0, 0, 0.8);
        padding: 40px 20px;
        text-align: center;
        color: #ffffff;
    }

    footer p {
        margin-bottom: 10px;
    }

    .particles {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
        background: rgba(0, 0, 0, 0.1);
        animation: particle-animation 5s infinite;
    }

    @keyframes particle-animation {
        0% { transform: scale(1); }
        50% { transform: scale(1.2); }
        100% { transform: scale(1); }
    }

    @media (max-width: 480px) {
        header h1 {
            font-size: 1.5rem;
        }
        .hero-content h2 {
            font-size: 2rem;
        }
        .section-title {
            font-size: 2rem;
        }
    }

    @media (min-width: 481px) and (max-width: 768px) {
        .hero-content h2 {
            font-size: 2.5rem;
        }
        .section-title {
            font-size: 2.2rem;
        }
    }

    @media (min-width: 769px) and (max-width: 1024px) {
        .hero-content h2 {
            font-size: 2.8rem;
        }
        .section-title {
            font-size: 2.4rem;
        }
    }

    @media (min-width: 1025px) and (max-width: 1440px) {
        .hero-content h2 {
            font-size: 3rem;
        }
        .section-title {
            font-size: 2.5rem;
        }
    }

    @media (min-width: 1441px) {
        .hero-content h2 {
            font-size: 3.5rem;
        }
        .section-title {
            font-size: 3rem;
        }
    }

    .highlight {
        background: rgba(255, 255, 255, 0.2);
        padding: 10px;
        border-radius: 5px;
        font-family: 'Courier New', Courier, monospace;
    }

    .code-preview {
        background: rgba(0, 0, 0, 0.8);
        padding: 20px;
        border-radius: 10px;
        overflow-x: auto;
    }

    .note {
        font-style: italic;
        color: #ffcc00;
        margin-top: 10px;
    }

    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
        margin-top: 20px;
    }

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

    .demo-article {
        background: rgba(255, 255, 255, 0.1);
        padding: 30px;
        border-radius: 15px;
        margin: 40px 0;
    }

    .demo-article h2,
    .demo-article h3,
    .demo-article h4 {
        color: #00ff99;
    }

    .demo-article ul {
        list-style: disc;
        margin-left: 20px;
    }

    .visual-impact {
        margin: 40px 0;
        text-align: center;
    }

    .visual-impact img {
        width: 200px;
        height: 200px;
        object-fit: cover;
        border-radius: 10px;
        margin: 10px;
        transition: transform 0.3s;
    }

    .visual-impact img:hover {
        transform: scale(1.1);
    }

    .reference-note {
        position: fixed;
        bottom: 10px;
        right: 10px;
        background: rgba(0, 0, 0, 0.7);
        padding: 10px 15px;
        border-radius: 5px;
        font-size: 0.9rem;
        color: #ffffff;
    }