/* 全局样式与配色方案 */
:root {
    --tech-blue: #0074D9;
    --soft-gray: #F5F5F5;
    --purple-tint: #6C5CE7;
    --orange-gold: #FFA726;
    --gradient-bg: linear-gradient(135deg, var(--tech-blue), var(--purple-tint));
    --shadow-effect: 0 4px 12px rgba(0, 0, 0, 0.1);
}
body {
    font-family: 'Open Sans', sans-serif;
    margin: 0;
    padding: 0;
    background: var(--gradient-bg);
    color: #333;
    line-height: 1.8;
}
.container {
    max-width: 1200px;
    margin: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 30px;
}
header {
    text-align: center;
    padding: 50px 20px;
    background: rgba(245, 245, 245, 0.9);
    box-shadow: var(--shadow-effect);
}
header h1 {
    font-family: 'Roboto', sans-serif;
    font-size: 2.5rem;
    color: var(--tech-blue);
    letter-spacing: 2px;
}
section {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    padding: 20px;
    box-shadow: var(--shadow-effect);
}
h2 {
    font-family: 'Roboto', sans-serif;
    font-size: 2rem;
    color: var(--purple-tint);
    margin-bottom: 15px;
}
p {
    font-size: 1rem;
    color: #444;
}
pre {
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-size: 0.9rem;
}
code {
    background: rgba(0, 116, 217, 0.2);
    padding: 2px 5px;
    border-radius: 3px;
    color: var(--tech-blue);
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
th, td {
    padding: 10px;
    border: 1px solid #ddd;
    text-align: left;
}
th {
    background: var(--tech-blue);
    color: #fff;
}
td {
    background: #f9f9f9;
}
button {
    background: var(--orange-gold);
    border: none;
    border-radius: 10px;
    padding: 10px 20px;
    color: #fff;
    cursor: pointer;
    transition: transform 0.3s ease;
}
button:hover {
    transform: scale(1.05);
}
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 20px;
}
.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.image-grid img:hover {
    transform: scale(1.1);
}
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    section {
        padding: 15px;
    }
    .container {
        gap: 20px;
    }
}
.fade-in {
    animation: fadeIn 1s ease-in-out;
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}