/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #fff;
    background: linear-gradient(135deg, #0074D9, #FF851B);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
}
.container {
    max-width: 1200px;
    width: 95%;
    margin: 20px auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
h1, h2, h3, h4, h5, h6 {
    color: #0074D9;
    text-align: center;
    margin-bottom: 20px;
}
h1 {
    font-size: 36px;
    letter-spacing: 2px;
}
p {
    font-size: 16px;
    margin-bottom: 15px;
    text-align: justify;
}
a {
    color: #FF851B;
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover {
    color: #0074D9;
}
pre {
    background: rgba(0, 0, 0, 0.6);
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
}
code {
    color: #FF851B;
    font-family: 'Courier New', Courier, monospace;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
th, td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
}
th {
    background-color: #0074D9;
    color: white;
}
.button {
    background-color: #0074D9;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.button:hover {
    background-color: #FF851B;
    transform: scale(1.1);
}
.card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    padding: 20px;
    position: relative;
    overflow: hidden;
}
.card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 10%, transparent 10.01%);
    animation: rotate 10s linear infinite;
}
@keyframes rotate {
    100% {
        transform: rotate(360deg);
    }
}
img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
}
@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }
    h1 {
        font-size: 30px;
    }
}