/* 全局样式与渐变背景 */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1a2980, #26d0ce);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: bold;
    color: #26d0ce;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

p, li, td {
    color: #e0e0e0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 50px 20px;
    background: rgba(0, 0, 0, 0.2);
    margin-bottom: 20px;
}

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

section {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    transition: transform 0.3s ease-in-out;
}

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

pre {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

code {
    color: #26d0ce;
    font-size: 0.9rem;
}

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

th, td {
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 10px;
    text-align: left;
}

th {
    background: rgba(0, 0, 0, 0.2);
}

ul {
    list-style-type: disc;
    padding-left: 20px;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto;
    border-radius: 10px;
}

.button {
    display: inline-block;
    background: #26d0ce;
    color: #000;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    transition: all 0.3s ease-in-out;
}

.button:hover {
    transform: scale(1.05);
    background: #1a2980;
}

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

    section, .card {
        padding: 15px;
    }

    pre {
        font-size: 0.8rem;
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 1s ease-in-out;
}