/* 全局样式定义 */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(to bottom, #0A2463, #000000);
    color: #FFFFFF;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 50px 0;
    background: linear-gradient(135deg, #0A2463, #9C27B0);
    position: relative;
    z-index: 1;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2);
    z-index: -1;
}

header h1 {
    font-size: 3rem;
    color: #FFEB3B;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    margin: 0;
}

header p {
    font-size: 1.2rem;
    color: #FFFFFF;
    margin-top: 10px;
}

section {
    margin-bottom: 40px;
}

h2 {
    font-size: 2rem;
    color: #FFEB3B;
    text-transform: uppercase;
    margin-bottom: 20px;
}

h3 {
    font-size: 1.5rem;
    color: #9C27B0;
    margin-bottom: 15px;
}

p {
    font-size: 1rem;
    color: #FFFFFF;
    line-height: 1.8;
}

button {
    background-color: #FFEB3B;
    border: none;
    color: #0A2463;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 5px;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

button:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}

pre {
    background-color: #0A2463;
    color: #FFEB3B;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.grid-item {
    background-color: #FFFFFF;
    color: #0A2463;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.grid-item img {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    header p {
        font-size: 1rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.2rem;
    }

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