/* 全局样式 */
body {
    margin: 0;
    font-family: 'Inter', 'SF Pro Display', sans-serif;
    background: linear-gradient(135deg, #0074D9, #B3C6FF);
    color: #333;
    line-height: 1.6;
    padding: 20px;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    color: #0074D9;
    margin-top: 20px;
    margin-bottom: 10px;
}

p {
    margin-bottom: 15px;
    font-size: 1rem;
}

a {
    color: #0074D9;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #B3C6FF;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.card {
    background: rgba(255, 255, 255, 0.6);
    border-radius: 12px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    padding: 20px;
    margin-bottom: 20px;
    width: calc(50% - 10px);
    position: relative;
}

.card:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
}

@media (max-width: 768px) {
    .card {
        width: 100%;
    }
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin-bottom: 20px;
}

.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    object-fit: cover;
}

.code-block {
    background: #f4f4f4;
    border-radius: 8px;
    padding: 15px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: #555;
}

.table-container {
    overflow-x: auto;
    margin-bottom: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

th {
    background-color: #0074D9;
    color: white;
}

.particle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: float 5s infinite ease-in-out;
}

@keyframes float {
    0% { transform: translateY(0); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: translateY(-300px); opacity: 0; }
}

.header {
    text-align: center;
    margin-bottom: 30px;
}

.header h1 {
    font-size: 2.5rem;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.footer {
    text-align: center;
    margin-top: 40px;
    font-size: 0.9rem;
    color: #fff;
}