/* 全局重置 */
* {margin:0;padding:0;box-sizing:border-box;}
body {font-family:"Microsoft YaHei","微软雅黑",sans-serif;line-height:1.6;color:#333;background:#f9f9f9;}
a {text-decoration:none;color:#333;transition:color .3s;}
a:hover {color:#165DFF;}
ul {list-style:none;}
img {max-width:100%;display:block;}
.container {max-width:1200px;margin:0 auto;padding:0 20px;}

/* 头部 */
.header {background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.08);position:sticky;top:0;z-index:100;}
.header-top {display:flex;justify-content:space-between;align-items:center;height:80px;}
.logo {font-size:24px;font-weight:bold;color:#165DFF;}
.nav ul {display:flex;gap:30px;}
.nav a {font-size:16px;padding:8px 0;display:block;}
.nav a.active {color:#165DFF;border-bottom:2px solid #165DFF;}
.header-phone {font-size:18px;font-weight:bold;color:#FF7D00;}

/* 面包屑 */
.breadcrumb {padding:15px 0;font-size:14px;color:#666;}
.breadcrumb a {color:#666;}
.breadcrumb span {margin:0 8px;}

/* Banner */
.banner {background:linear-gradient(135deg,#165DFF 0%,#0039CB 100%);color:#fff;padding:80px 0;text-align:center;}
.banner h1 {font-size:42px;margin-bottom:20px;}
.banner p {font-size:18px;margin-bottom:30px;opacity:.9;}
.banner-btn {display:inline-block;padding:12px 36px;background:#FF7D00;color:#fff;border-radius:4px;font-size:16px;font-weight:bold;}
.banner-btn:hover {background:#E67000;color:#fff;}

/* 通用板块 */
.section {padding:60px 0;}
.section-title {text-align:center;margin-bottom:40px;}
.section-title h2 {font-size:32px;margin-bottom:10px;color:#222;}
.section-title p {color:#666;font-size:16px;}

/* 卡片网格 */
.service-grid {display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}
.service-card {background:#fff;border-radius:8px;padding:30px 20px;text-align:center;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:transform .3s,box-shadow .3s;}
.service-card:hover {transform:translateY(-5px);box-shadow:0 8px 20px rgba(0,0,0,.1);}
.service-card h3 {font-size:18px;margin-bottom:10px;color:#222;}
.service-card p {font-size:14px;color:#666;line-height:1.5;}

.advantage-grid {display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}
.advantage-item {background:#fff;padding:30px 20px;border-radius:8px;text-align:center;}
.advantage-item h3 {font-size:16px;margin-bottom:8px;color:#222;}
.advantage-item p {font-size:13px;color:#666;}

/* 底部 */
.footer {background:#222;color:#aaa;padding:50px 0 20px;margin-top:60px;}
.footer-grid {display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:30px;}
.footer h4 {color:#fff;font-size:16px;margin-bottom:20px;}
.footer p {font-size:14px;line-height:1.8;margin-bottom:8px;}
.footer ul li {margin-bottom:10px;font-size:14px;}
.footer a {color:#aaa;}
.footer a:hover {color:#fff;}
.footer-bottom {text-align:center;padding-top:20px;border-top:1px solid #333;font-size:13px;}

/* 响应式 */
@media (max-width:992px) {
    .service-grid,.advantage-grid {grid-template-columns:repeat(2,1fr);}
    .footer-grid {grid-template-columns:1fr 1fr;}
    .banner h1 {font-size:32px;}
}
@media (max-width:768px) {
    .nav {display:none;}
    .service-grid,.advantage-grid {grid-template-columns:1fr;}
    .footer-grid {grid-template-columns:1fr;}
    .banner h1 {font-size:26px;}
    .section-title h2 {font-size:24px;}
}