/* 全局样式 */
body {
    margin: 0;
    font-family: 'Open Sans', sans-serif;
    color: #fff;
    background: linear-gradient(135deg, #0A192F, #6C5CE7);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Futura', sans-serif;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

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

/* 标题与导航 */
header {
    position: relative;
    text-align: center;
    padding: 50px 20px;
    background: linear-gradient(135deg, #000, #0A192F);
}

header h1 {
    font-size: 3rem;
    color: #FF6B6B;
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
}

nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

nav a {
    color: #6C5CE7;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

nav a:hover {
    color: #FF6B6B;
    transform: scale(1.1);
}

/* 主体内容 */
main {
    background: linear-gradient(135deg, #0A192F, #000);
    padding: 40px 20px;
}

section {
    margin-bottom: 40px;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

pre {
    background: rgba(0, 0, 0, 0.7);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

code {
    color: #6C5CE7;
    font-size: 0.9rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: rgba(0, 0, 0, 0.5);
}

th, td {
    padding: 10px;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

th {
    background: #6C5CE7;
    color: #fff;
}

/* 响应式布局 */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    nav {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    pre {
        font-size: 0.8rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

section {
    animation: fadeIn 1s ease-in-out;
}