* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    background: #0a0e17;
    color: #e6e6e6;
    font-family: "Microsoft Yahei", SimHei, sans-serif;
    line-height: 1.7;
}
a {
    color: #6cb4ff;
    text-decoration: none;
    transition: 0.25s;
}
a:hover {
    color: #ffc857;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* 导航栏 */
header {
    background: rgba(10,14,23,0.95);
    border-bottom: 1px solid #22334d;
    position: sticky;
    top:0;
    z-index:99;
}
.nav-wrap {
    display:flex;
    justify-content: space-between;
    align-items:center;
    padding:14px 16px;
}
.logo {
    font-size:24px;
    color:#ffc857;
    font-weight:bold;
}
.nav-menu {
    display:flex;
    gap:28px;
}
.nav-menu a {
    font-size:16px;
}
.nav-menu a.active {
    color:#ffc857;
}

/* Banner */
.banner {
    padding:60px 0;
    text-align:center;
    background:linear-gradient(160deg,#0f1724,#142236);
    border-bottom:1px solid #22334d;
}
.banner h1 {
    font-size:42px;
    color:#fff;
    margin-bottom:12px;
}
.banner p {
    font-size:18px;
    color:#b0c4de;
    max-width:800px;
    margin:0 auto 30px;
}
.btn-group {
    display:flex;
    gap:16px;
    justify-content:center;
    flex-wrap:wrap;
}
.btn {
    padding:12px 28px;
    border-radius:4px;
    font-size:16px;
    font-weight:bold;
    border:none;
    cursor:pointer;
}
.btn-primary {
    background:#ffc857;
    color:#0a0e17;
}
.btn-dark {
    background:#1d2c42;
    color:#fff;
    border:1px solid #40587c;
}

/* 区块通用 */
section {
    padding:50px 0;
    border-bottom:1px solid #1c283a;
}
section h2 {
    font-size:26px;
    margin-bottom:20px;
    color:#ffc857;
    border-left:4px solid #ffc857;
    padding-left:12px;
}
.card {
    background:#111927;
    border:1px solid #22334d;
    padding:22px;
    border-radius:6px;
    margin-bottom:18px;
}
.card h3 {
    color:#82bfff;
    margin-bottom:10px;
}

/* 列表 */
ul.info-list {
    padding-left:22px;
}
ul.info-list li {
    margin:8px 0;
}

/* 页脚 */
footer {
    padding:30px 0;
    text-align:center;
    color:#888;
    font-size:14px;
}

/* 响应式 */
@media (max-width:768px){
    .nav-wrap {
        flex-direction:column;
        gap:12px;
    }
    .banner h1 {
        font-size:30px;
    }
}