/* 全局样式 */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #0a0a2a, #0d1b48);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-weight: bold;
    color: #00ffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

p {
    font-size: 1rem;
    color: #e0e0e0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.item {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
}

.button {
    background: linear-gradient(90deg, #6A0DAD, #00FFFF);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0, 255, 255, 0.5);
}

code {
    background: rgba(255, 255, 255, 0.1);
    color: #39FF14;
    padding: 5px 10px;
    border-radius: 5px;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    display: block;
    margin: 10px 0;
}

pre {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
}

header {
    background: linear-gradient(135deg, #6A0DAD, #00FFFF);
    color: white;
    text-align: center;
    padding: 50px 20px;
    position: relative;
}

header h1 {
    font-size: 2.5rem;
    margin: 0;
}

header p {
    font-size: 1.2rem;
    margin-top: 10px;
}

.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    margin-bottom: 15px;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 0.9rem;
    }

    header h1 {
        font-size: 1.8rem;
    }
}