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

    body {
        font-family: 'Poppins', sans-serif;
        background: linear-gradient(135deg, #8e44ad, #f39c12);
        color: #2c3e50;
        line-height: 1.6;
    }

    a {
        color: #3498db;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #2980b9;
    }

    /* 导航栏样式 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.8);
        backdrop-filter: blur(10px);
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 50px;
        z-index: 1000;
    }

    .navbar .logo {
        font-size: 1.5rem;
        font-weight: bold;
        color: #8e44ad;
    }

    .navbar ul {
        list-style: none;
        display: flex;
    }

    .navbar ul li {
        margin-left: 30px;
    }

    .navbar ul li a {
        font-size: 1rem;
        color: #2c3e50;
        position: relative;
        transition: color 0.3s ease;
    }

    .navbar ul li a::after {
        content: '';
        width: 0%;
        height: 2px;
        background: #2c3e50;
        position: absolute;
        left: 0;
        bottom: -5px;
        transition: width 0.3s ease;
    }

    .navbar ul li a:hover::after {
        width: 100%;
    }

    /* 主体内容样式 */
    .hero {
        height: 100vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        background: radial-gradient(circle, rgba(255, 255, 255, 0.2), transparent);
        animation: aurora-move 15s linear infinite;
        text-align: center;
        padding: 0 20px;
    }

    .hero h1 {
        font-size: 3rem;
        color: #ffffff;
        margin-bottom: 20px;
        animation: slide-in 1s ease-out forwards;
    }

    .hero p {
        font-size: 1.2rem;
        color: #ffffff;
        max-width: 600px;
        margin-bottom: 40px;
        animation: fade-in 2s ease-out forwards;
    }

    .hero .cta-button {
        background-color: #3498db;
        color: #ffffff;
        padding: 15px 30px;
        border: none;
        border-radius: 50px;
        font-size: 1rem;
        cursor: pointer;
        transition: background-color 0.3s ease, transform 0.3s ease;
    }

    .hero .cta-button:hover {
        background-color: #2980b9;
        transform: scale(1.05);
    }

    /* 动画关键帧 */
    @keyframes aurora-move {
        0% {
            background: radial-gradient(circle, rgba(255, 87, 34, 0.5), transparent);
        }
        50% {
            background: radial-gradient(circle, rgba(255, 87, 34, 0.2), transparent);
        }
        100% {
            background: radial-gradient(circle, rgba(255, 87, 34, 0.5), transparent);
        }
    }

    @keyframes slide-in {
        from {
            transform: translateY(50px);
            opacity: 0;
        }
        to {
            transform: translateY(0);
            opacity: 1;
        }
    }

    @keyframes fade-in {
        from {
            opacity: 0;
        }
        to {
            opacity: 1;
        }
    }

    /* 内容区样式 */
    .content {
        padding: 100px 50px 50px 50px;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        background: linear-gradient(135deg, #f39c12, #8e44ad);
    }

    .card {
        background-color: rgba(255, 255, 255, 0.9);
        border-radius: 15px;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
        margin: 20px;
        padding: 20px;
        width: calc(33.333% - 40px);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
    }

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

    .card h3 {
        font-size: 1.5rem;
        margin-bottom: 10px;
        color: #2c3e50;
    }

    .card p {
        font-size: 1rem;
        color: #34495e;
        margin-bottom: 15px;
    }

    .card .btn {
        background-color: #2ecc71;
        color: #ffffff;
        padding: 10px 20px;
        border: none;
        border-radius: 25px;
        cursor: pointer;
        transition: background-color 0.3s ease, transform 0.3s ease;
    }

    .card .btn:hover {
        background-color: #27ae60;
        transform: scale(1.05);
    }

    /* 示例展示区样式 */
    .example-section {
        padding: 50px;
        background: #ecf0f1;
    }

    .example-section h2 {
        font-size: 2rem;
        margin-bottom: 20px;
        text-align: center;
        color: #2c3e50;
    }

    .example-section article {
        background: #ffffff;
        padding: 30px;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    .example-section article h2 {
        font-size: 1.8rem;
        margin-bottom: 15px;
        color: #8e44ad;
    }

    .example-section article h3 {
        font-size: 1.5rem;
        margin-top: 20px;
        color: #2980b9;
    }

    .example-section article p {
        margin-bottom: 15px;
        color: #34495e;
    }

    .example-section article pre {
        background: #2c3e50;
        color: #ecf0f1;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 15px;
    }

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

    /* 底部样式 */
    .footer {
        text-align: center;
        padding: 20px;
        background: rgba(44, 62, 80, 0.9);
        color: #ffffff;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .card {
            width: calc(33.333% - 40px);
        }
    }

    @media (max-width: 1200px) {
        .navbar {
            padding: 20px 30px;
        }

        .content {
            padding: 80px 30px 30px 30px;
        }

        .card {
            width: calc(33.333% - 40px);
        }
    }

    @media (max-width: 1024px) {
        .card {
            width: calc(50% - 40px);
        }
    }

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

        .navbar ul {
            flex-direction: column;
            align-items: center;
        }

        .navbar ul li {
            margin: 10px 0;
        }

        .card {
            width: calc(50% - 40px);
        }
    }

    @media (max-width: 480px) {
        .navbar {
            padding: 15px 20px;
        }

        .content {
            padding: 60px 20px 20px 20px;
        }

        .card {
            width: 100%;
            margin: 10px 0;
        }

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

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

        .hero .cta-button {
            padding: 10px 20px;
            font-size: 0.9rem;
        }
    }

    @media (max-width: 320px) {
        .hero h1 {
            font-size: 2rem;
        }

        .hero p {
            font-size: 0.9rem;
        }

        .navbar ul li {
            margin: 5px 0;
        }
    }