* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
    background: #0f172a;
    color: #e2e8f0;
}

/* 头部 */
.hero {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.hero h1 {
    font-size: 40px;
    margin-bottom: 10px;
}

.hero p {
    opacity: 0.9;
}

/* 内容 */
.container {
    max-width: 1000px;
    margin: auto;
    padding: 40px 20px;
}

.card {
    background: #1e293b;
    padding: 25px;
    border-radius: 14px;
    margin-bottom: 20px;
    transition: 0.3s;
}

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

.card h2 {
    color: #60a5fa;
    margin-bottom: 12px;
}

.card ul {
    padding-left: 20px;
}

.card li {
    margin-bottom: 8px;
}

/* 页脚 */
footer {
    text-align: center;
    padding: 20px;
    background: #020617;
    font-size: 14px;
}

footer a {
    color: #38bdf8;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* 响应式 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 26px;
    }
}