/* 基础样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Open Sans', sans-serif;
        background: linear-gradient(135deg, #1E3A8A, #6D28D9);
        color: #ffffff;
        line-height: 1.6;
    }

    a {
        color: #34D399;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #C0C0C0;
    }

    /* 导航栏 */
    .navbar {
        width: 100%;
        padding: 20px 40px;
        position: fixed;
        top: 0;
        left: 0;
        background: rgba(0, 0, 0, 0.7);
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
        transition: background 0.3s ease;
    }

    .navbar.scrolled {
        background: rgba(0, 0, 0, 0.9);
    }

    .navbar .logo {
        font-family: 'Montserrat', sans-serif;
        font-size: 24px;
        font-weight: bold;
    }

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

    .navbar ul li {
        margin-left: 20px;
    }

    .navbar ul li a {
        font-size: 16px;
        font-weight: 600;
    }

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

    .hero::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(30, 58, 138, 0.6);
    }

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

    .hero-content h1 {
        font-family: 'Montserrat', sans-serif;
        font-size: 48px;
        margin-bottom: 20px;
        animation: fadeInDown 1s ease forwards;
    }

    .hero-content p {
        font-size: 24px;
        margin-bottom: 30px;
        animation: fadeInUp 1s ease forwards;
    }

    .hero-content .btn {
        background-color: #34D399;
        padding: 15px 30px;
        border: none;
        border-radius: 25px;
        font-size: 18px;
        cursor: pointer;
        transition: background-color 0.3s ease, transform 0.3s ease;
    }

    .hero-content .btn:hover {
        background-color: #C0C0C0;
        transform: scale(1.05);
    }

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

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

    /* 主内容区 */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 100px 20px 50px 20px;
    }

    .section-title {
        font-family: 'Montserrat', sans-serif;
        font-size: 32px;
        margin-bottom: 20px;
        text-align: center;
        color: #34D399;
    }

    .article {
        background: rgba(0, 0, 0, 0.5);
        padding: 30px;
        border-radius: 10px;
        margin-bottom: 50px;
    }

    .article h2, .article h3, .article h4 {
        color: #C0C0C0;
    }

    .article pre {
        background: #1E3A8A;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin: 15px 0;
    }

    .article code {
        font-family: 'Roboto Mono', monospace;
        color: #34D399;
    }

    .data-display {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        justify-content: center;
    }

    .data-card {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        width: 300px;
        transition: transform 0.3s ease, background 0.3s ease;
    }

    .data-card:hover {
        transform: translateY(-10px);
        background: rgba(255, 255, 255, 0.2);
    }

    .data-card h4 {
        margin-bottom: 10px;
        font-family: 'Montserrat', sans-serif;
        color: #34D399;
    }

    .data-card p {
        font-size: 14px;
        line-height: 1.5;
    }

    /* 提示信息 */
    .prompt {
        text-align: center;
        font-size: 18px;
        margin-bottom: 40px;
        color: #C0C0C0;
    }

    /* 图片样式 */
    .images {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
        margin-bottom: 50px;
    }

    .images img {
        width: 100px;
        height: 100px;
        object-fit: cover;
        border-radius: 10px;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .hero-content h1 {
            font-size: 42px;
        }

        .hero-content p {
            font-size: 20px;
        }

        .container {
            padding: 80px 15px 40px 15px;
        }

        .data-card {
            width: 280px;
        }
    }

    @media (max-width: 1200px) {
        .hero-content h1 {
            font-size: 36px;
        }

        .hero-content p {
            font-size: 18px;
        }

        .data-card {
            width: 260px;
        }
    }

    @media (max-width: 1024px) {
        .navbar ul {
            display: none;
        }

        .navbar .menu-toggle {
            display: block;
            cursor: pointer;
            color: #34D399;
            font-size: 24px;
        }

        .navbar.active ul {
            display: flex;
            flex-direction: column;
            position: absolute;
            top: 60px;
            right: 20px;
            background: rgba(0, 0, 0, 0.9);
            padding: 10px;
            border-radius: 5px;
        }

        .data-card {
            width: 100%;
        }
    }

    @media (max-width: 768px) {
        .hero-content h1 {
            font-size: 30px;
        }

        .hero-content p {
            font-size: 16px;
        }

        .data-card {
            width: 100%;
        }

        .container {
            padding: 60px 10px 30px 10px;
        }
    }

    @media (max-width: 480px) {
        .hero-content h1 {
            font-size: 24px;
        }

        .hero-content p {
            font-size: 14px;
        }

        .data-card {
            width: 100%;
        }
    }

    @media (max-width: 320px) {
        .hero-content h1 {
            font-size: 20px;
        }

        .hero-content p {
            font-size: 12px;
        }
    }

    /* 动画效果 */
    .fade-in {
        opacity: 0;
        animation: fadeIn 2s forwards;
    }

    @keyframes fadeIn {
        to {
            opacity: 1;
        }
    }

    /* 按钮效果 */
    .btn {
        background-color: #34D399;
        border: none;
        padding: 10px 20px;
        color: white;
        font-weight: bold;
        border-radius: 5px;
        cursor: pointer;
        transition: background-color 0.3s ease, transform 0.3s ease;
    }

    .btn:hover {
        background-color: #C0C0C0;
        transform: scale(1.05);
    }