/* 基本样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0B132B, #1F4068);
        color: #FFFFFF;
        overflow-x: hidden;
    }

    /* 动态星空背景 */
    .star-background {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: -1;
        background: radial-gradient(circle, rgba(255, 255, 255, 0.1), transparent);
        animation: aurora-move 15s linear infinite;
    }

    @keyframes aurora-move {
        from {
            transform: translateX(0);
        }
        to {
            transform: translateX(-100%);
        }
    }

    /* 网格系统 */
    .grid-container {
        display: grid;
        grid-template-columns: repeat(12, 1fr);
        gap: 20px;
        padding: 20px;
    }

    .grid-item {
        grid-column: span 12;
    }

    @media (min-width: 480px) {
        .grid-item-half {
            grid-column: span 6;
        }
    }

    @media (min-width: 768px) {
        .grid-item-third {
            grid-column: span 4;
        }
    }

    @media (min-width: 1024px) {
        .grid-item-quarter {
            grid-column: span 3;
        }
    }

    /* 头部导航栏 */
    header {
        background: #1F4068;
        padding: 20px 0;
        position: fixed;
        width: 100%;
        top: 0;
        z-index: 1000;
        box-shadow: 0 2px 5px rgba(0,0,0,0.5);
    }

    .navbar {
        width: 90%;
        margin: 0 auto;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .navbar a {
        color: #FFC107;
        text-decoration: none;
        margin: 0 15px;
        font-family: 'Orbitron', sans-serif;
        position: relative;
    }

    .navbar a::after {
        content: '';
        display: block;
        width: 0;
        height: 2px;
        background: #FFC107;
        transition: width 0.3s;
    }

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

    /* 主标题样式 */
    .main-title {
        text-align: center;
        font-family: 'Orbitron', sans-serif;
        font-size: 3em;
        margin: 100px 0 40px 0;
        color: #FFC107;
        text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    }

    /* 内容区域 */
    .content {
        width: 90%;
        margin: 0 auto;
        padding: 20px 0;
    }

    .content h2, .content h3 {
        color: #FFC107;
        font-family: 'Orbitron', sans-serif;
    }

    .content p {
        line-height: 1.6;
        margin: 15px 0;
    }

    .content pre {
        background: #1F4068;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

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

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }

    table, th, td {
        border: 1px solid #FFC107;
    }

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

    th {
        background: #0B132B;
    }

    /* 按钮样式 */
    .button-primary {
        background-color: #FFC107;
        color: #0B132B;
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        font-size: 1em;
        cursor: pointer;
        transition: background-color 0.3s ease;
    }

    .button-primary:hover {
        background-color: #F8A400;
    }

    /* 图像样式 */
    .images {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
        margin: 20px 0;
    }

    .images img {
        width: 100px;
        height: 100px;
        object-fit: cover;
        border-radius: 10px;
        transition: transform 0.3s ease;
    }

    .images img:hover {
        transform: scale(1.1);
    }

    /* 链接样式 */
    a {
        color: #00FFEA;
        text-decoration: none;
    }

    a:hover {
        text-decoration: underline;
    }

    /* 响应式设计 */
    @media (max-width: 320px) {
        .main-title {
            font-size: 2em;
        }
    }

    @media (max-width: 480px) {
        .navbar {
            flex-direction: column;
        }

        .navbar a {
            margin: 10px 0;
        }
    }

    @media (max-width: 768px) {
        .grid-container {
            grid-template-columns: repeat(6, 1fr);
        }
    }

    @media (max-width: 1024px) {
        .grid-container {
            grid-template-columns: repeat(8, 1fr);
        }
    }

    @media (min-width: 1200px) {
        .main-title {
            font-size: 4em;
        }
    }

    @media (min-width: 1440px) {
        .content {
            width: 80%;
        }
    }