/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #f5f8fb, #eef2f7);
    color: #333;
    line-height: 1.6;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-weight: bold;
    color: #2c3e50;
}

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

a {
    color: #007bff;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #0056b3;
}

.container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
    padding: 20px;
}

.header {
    grid-column: span 12;
    text-align: center;
    margin-bottom: 40px;
}

.header h1 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 10px;
}

.header p {
    font-size: 1.2rem;
    color: #555;
}

.section {
    grid-column: span 12;
    margin-bottom: 40px;
}

@media (min-width: 768px) {
    .section {
        grid-column: span 8;
        margin-left: auto;
        margin-right: auto;
    }
}

.card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.frosted-glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 20px;
}

.highlight {
    color: #ff9800;
    font-weight: bold;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    background-color: #0056b3;
    transform: scale(1.1);
}

pre {
    background: #f4f4f4;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 0.9rem;
}

code {
    color: #d44d26;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

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

.footer {
    grid-column: span 12;
    text-align: center;
    margin-top: 40px;
    font-size: 0.9rem;
    color: #777;
}

@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }

    .section {
        grid-column: span 12;
    }

    .header h1 {
        font-size: 2rem;
    }
}