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

    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0A192F, #1E3A8A);
        color: #FFFFFF;
        line-height: 1.6;
        padding: 20px;
    }

    header {
        text-align: center;
        padding: 50px 0;
        background: rgba(10, 25, 47, 0.8);
        border-radius: 15px;
        box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        border: 1px solid rgba(255, 255, 255, 0.18);
    }

    header h1 {
        font-size: 2.5em;
        color: #38BDF8;
        margin-bottom: 20px;
        animation: fadeInDown 2s ease-out;
    }

    header p {
        font-size: 1.2em;
        color: #FFFFFF;
        max-width: 800px;
        margin: 0 auto;
        animation: fadeInUp 2s ease-out;
    }

    main {
        max-width: 1200px;
        margin: 40px auto;
        display: grid;
        grid-template-columns: 1fr;
        gap: 20px;
    }

    article {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    }

    article h2 {
        color: #6841A7;
        font-size: 2em;
        margin-bottom: 20px;
        border-bottom: 2px solid #38BDF8;
        padding-bottom: 10px;
    }

    article h3 {
        color: #38BDF8;
        font-size: 1.5em;
        margin-top: 20px;
        margin-bottom: 10px;
    }

    article h4 {
        color: #a78bfa;
        font-size: 1.2em;
        margin-top: 15px;
        margin-bottom: 8px;
    }

    article p {
        margin-bottom: 15px;
        color: #FFFFFF;
    }

    article table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }

    article table, th, td {
        border: 1px solid #38BDF8;
    }

    article th, td {
        padding: 10px;
        text-align: left;
    }

    article th {
        background-color: rgba(56, 189, 248, 0.2);
    }

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

    code {
        color: #38BDF8;
        font-family: 'Courier New', Courier, monospace;
    }

    .frosted-glass {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: 10px;
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }

    .ai-animation {
        animation: fadeIn 2s ease-in-out;
    }

    .parallax {
        background-image: url('https://images.gptkong.com/demo/sample1.png');
        height: 400px;
        background-attachment: fixed;
        background-position: center;
        background-repeat: no-repeat;
        background-size: cover;
        border-radius: 15px;
    }

    footer {
        text-align: center;
        padding: 30px 0;
        color: #AAAAAA;
        font-size: 0.9em;
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        margin: 10px 0;
        border: none;
        border-radius: 25px;
        background: linear-gradient(45deg, #6841A7, #38BDF8);
        color: #FFFFFF;
        cursor: pointer;
        transition: background 0.3s ease, transform 0.3s ease;
    }

    .btn:hover {
        background: linear-gradient(45deg, #38BDF8, #6841A7);
        transform: scale(1.05);
    }

    /* 动画效果 */
    @keyframes fadeInDown {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }

    /* 响应式设计 */
    @media (min-width: 320px) {
        header h1 {
            font-size: 1.8em;
        }
        article {
            padding: 20px;
        }
    }

    @media (min-width: 480px) {
        header h1 {
            font-size: 2em;
        }
    }

    @media (min-width: 768px) {
        main {
            grid-template-columns: 1fr 1fr;
        }
        .parallax {
            height: 500px;
        }
    }

    @media (min-width: 1024px) {
        header h1 {
            font-size: 2.5em;
        }
        main {
            grid-template-columns: 1fr 1fr 1fr;
        }
    }

    @media (min-width: 1200px) {
        body {
            padding: 40px;
        }
    }

    @media (min-width: 1440px) {
        article {
            padding: 40px;
        }
    }