/* CSS 样式定义 */
body {
    margin: 0;
    font-family: 'Roboto Mono', sans-serif;
    line-height: 1.6;
    background: linear-gradient(135deg, #0A192F, #1E2D47);
    color: #FFFFFF;
    overflow-x: hidden;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 25, 47, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header nav a {
    color: #64FFDA;
    text-decoration: none;
    margin-right: 20px;
    font-size: 16px;
    transition: color 0.3s ease;
}

header nav a:hover {
    color: #00FFC1;
}

.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 100px 20px 40px;
}

.card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

h1, h2, h3 {
    color: #64FFDA;
    font-weight: bold;
}

pre {
    background: rgba(10, 25, 47, 0.9);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-size: 14px;
}

button {
    background-color: #64FFDA;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    transform: scale(1.1);
    background-color: #00FFC1;
}

.scroll-animation {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

    header nav a {
        font-size: 14px;
        margin-right: 15px;
    }
}