/* 基础样式与变量定义 */
    :root {
        --bg-color: #F5F5DC; /* 米色背景 */
        --primary-color: #2E86C1; /* 科技蓝 */
        --accent-color: #FFC300; /* 点缀色 - 亮黄 */
        --text-color: #333333; /* 主文本颜色 */
        --secondary-color: #555555; /* 次文本颜色 */
        --font-family-sans: 'Roboto', sans-serif;
        --font-family-serif: 'Open Sans', sans-serif;
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        background: linear-gradient(135deg, #F5F5DC, #E0E0E0);
        color: var(--text-color);
        font-family: var(--font-family-sans);
        line-height: 1.6;
        padding: 20px;
    }

    header {
        background: linear-gradient(135deg, #2E86C1, #0074D9);
        color: white;
        padding: 20px;
        text-align: center;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        margin-bottom: 30px;
    }

    header h1 {
        font-size: 2.5em;
        margin-bottom: 10px;
        font-family: 'Poppins', sans-serif;
    }

    header p {
        font-size: 1.2em;
        color: #FFD700;
    }

    .container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 30px;
        margin-bottom: 50px;
    }

    .left-section, .right-section {
        padding: 20px;
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.8);
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }

    .left-section {
        background: radial-gradient(circle, rgba(255,87,34,0.3), transparent), url('https://images.gptkong.com/demo/sample1.png') no-repeat center;
        background-size: cover;
    }

    .right-section {
        background: #ffffff;
    }

    .section-title {
        font-size: 1.8em;
        margin-bottom: 15px;
        color: var(--primary-color);
        font-family: 'Poppins', sans-serif;
    }

    .section-content p {
        margin-bottom: 15px;
        font-family: var(--font-family-serif);
    }

    .section-content pre {
        background: #f0f0f0;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        font-size: 0.9em;
        font-family: 'Courier New', Courier, monospace;
    }

    .section-content code {
        background: #f0f0f0;
        padding: 2px 4px;
        border-radius: 3px;
        font-size: 0.95em;
    }

    .image-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 20px;
    }

    .image-grid img {
        width: calc(33.333% - 10px);
        border-radius: 5px;
    }

    .highlight {
        background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    footer {
        text-align: center;
        padding: 20px;
        background: linear-gradient(135deg, #2E86C1, #0074D9);
        color: white;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }

    /* 动画效果 */
    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    .animated-background {
        background: radial-gradient(circle, #FF5733, transparent);
        animation: aurora-move 15s linear infinite;
    }

    @keyframes grow {
        from { transform: scale(0); opacity: 0; }
        to { transform: scale(1); opacity: 1; }
    }

    .plant {
        animation: grow 2s ease forwards;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        header h1 {
            font-size: 2.2em;
        }
    }

    @media (max-width: 1200px) {
        .container {
            grid-template-columns: 1fr 1fr;
        }

        .image-grid img {
            width: calc(50% - 10px);
        }
    }

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

        .image-grid img {
            width: 100%;
        }
    }

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

        .left-section, .right-section {
            padding: 15px;
        }

        header h1 {
            font-size: 2em;
        }
    }

    @media (max-width: 480px) {
        body {
            padding: 10px;
        }

        header h1 {
            font-size: 1.5em;
        }

        .section-title {
            font-size: 1.5em;
        }

        .section-content pre {
            font-size: 0.8em;
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 1.2em;
        }

        .section-title {
            font-size: 1.2em;
        }

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

        .image-grid img {
            width: 100%;
        }
    }

    /* 链接样式 */
    a {
        color: var(--primary-color);
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: var(--accent-color);
    }

    /* 提示样式 */
    .reference-note {
        background: #FFF3CD;
        color: #856404;
        padding: 10px 20px;
        border-left: 5px solid #FFEEBA;
        border-radius: 5px;
        margin-bottom: 20px;
        font-family: var(--font-family-serif);
    }