/* 全局样式 */
:root {
    --primary-color: #0A192F; /* 深蓝色 */
    --secondary-color: #64FFDA; /* 亮蓝色 */
    --background-gradient: linear-gradient(135deg, #0A192F, #000000);
    --text-color: #FFFFFF;
    --code-bg: rgba(0, 0, 0, 0.8);
    --code-color: #64FFDA;
    --hover-color: #1E3A8A;
    --transition-speed: 0.3s;
}
body {
    margin: 0;
    font-family: 'Arial', sans-serif;
    background: var(--background-gradient);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    animation: gradient-animation 10s infinite alternate;
}
@keyframes gradient-animation {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
h1, h2, h3 {
    font-weight: bold;
    color: var(--secondary-color);
    text-align: center;
    margin-bottom: 20px;
}
p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}
a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color var(--transition-speed);
}
a:hover {
    color: var(--hover-color);
}
pre {
    background: var(--code-bg);
    color: var(--code-color);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    margin-bottom: 20px;
}
code {
    background: var(--code-bg);
    color: var(--code-color);
    padding: 2px 5px;
    border-radius: 4px;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}
th, td {
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 10px;
    text-align: left;
}
th {
    background: rgba(0, 0, 0, 0.3);
    color: var(--secondary-color);
}
td {
    background: rgba(0, 0, 0, 0.2);
}
img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
}
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.card {
    background: rgba(0, 0, 0, 0.5);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}
.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
}
@media (max-width: 768px) {
    h1, h2, h3 {
        font-size: 1.5rem;
    }
    p {
        font-size: 14px;
    }
    .grid-container {
        grid-template-columns: 1fr;
    }
}