:root{
  --primary:#1a5fd0;
  --primary-dark:#134a9e;
  --text:#20262e;
  --muted:#6b7280;
  --line:#e5e8ee;
  --bg:#f5f7fa;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--text);background:#fff;line-height:1.75;font-size:15px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}

/* 顶部导航 */
.topbar{background:#0f1b2d;color:#c9d4e3;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px;flex-wrap:wrap;gap:8px}
.topbar a{color:#c9d4e3}
.topbar a:hover{color:#fff}

.nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.brand{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:700;letter-spacing:.5px}
.brand .logo{width:40px;height:40px;border-radius:9px;background:linear-gradient(135deg,var(--primary),#3f8ae8);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700}
.menu{display:flex;gap:6px;flex-wrap:wrap}
.menu a{padding:8px 14px;border-radius:8px;color:#333;font-size:15px}
.menu a:hover{background:#eef3fd;color:var(--primary)}
.menu a.active{color:var(--primary);font-weight:600;background:#eef3fd}

/* 首页横幅 */
.hero{background:linear-gradient(120deg,#0f2b57 0%,#1a5fd0 60%,#2f7fe0 100%);color:#fff;padding:88px 0 96px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.07)}
.hero h1{font-size:40px;line-height:1.35;font-weight:700;letter-spacing:1px;max-width:720px}
.hero .sub{margin-top:18px;font-size:17px;color:#dbe7fb;max-width:640px}
.hero .actions{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 30px;border-radius:8px;font-size:16px;font-weight:600;transition:.2s}
.btn-primary{background:#fff;color:var(--primary)}
.btn-primary:hover{background:#e8f0ff}
.btn-ghost{border:1px solid rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}

section.block{padding:64px 0}
section.block.alt{background:var(--bg)}
.sec-title{text-align:center;margin-bottom:14px}
.sec-title h2{font-size:28px;font-weight:700;letter-spacing:.5px}
.sec-title p{color:var(--muted);margin-top:10px;font-size:15px}
.sec-line{width:48px;height:3px;background:var(--primary);border-radius:2px;margin:16px auto 0}

.intro-text{max-width:900px;margin:0 auto;color:#4a5361;font-size:15.5px}
.intro-text p{margin-bottom:14px}

/* 卡片网格 */
.grid{display:grid;gap:24px}
.grid.col4{grid-template-columns:repeat(4,1fr)}
.grid.col3{grid-template-columns:repeat(3,1fr)}
.grid.col2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px 24px;transition:.22s}
.card:hover{box-shadow:0 10px 30px rgba(23,60,120,.10);transform:translateY(-3px);border-color:#cddcf5}
.card .icon{width:48px;height:48px;border-radius:10px;background:#eef3fd;color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;margin-bottom:16px}
.card h3{font-size:17px;font-weight:600;margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px}

.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:44px;text-align:center}
.stat-row .num{font-size:32px;font-weight:700;color:var(--primary)}
.stat-row .lbl{color:var(--muted);font-size:14px;margin-top:4px}

/* 列表页 */
.page-head{background:linear-gradient(120deg,#0f2b57,#1a5fd0);color:#fff;padding:56px 0}
.page-head h1{font-size:30px;font-weight:700}
.page-head .path{font-size:13.5px;color:#cfe0fb;margin-top:10px}
.page-head .path a:hover{text-decoration:underline}

.list-item{display:flex;justify-content:space-between;gap:24px;padding:24px 0;border-bottom:1px solid var(--line);align-items:center}
.list-item:last-child{border-bottom:none}
.list-item h3{font-size:17px;font-weight:600;margin-bottom:8px}
.list-item h3 a:hover{color:var(--primary)}
.list-item p{color:var(--muted);font-size:14.5px}
.list-item .date{color:#93a0b4;font-size:14px;white-space:nowrap}

.detail{background:#fff;border:1px solid var(--line);border-radius:12px;padding:36px 40px}
.detail h1{font-size:24px;font-weight:700;margin-bottom:12px}
.detail .meta{color:#93a0b4;font-size:13.5px;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:24px}
.detail .content p{margin-bottom:14px;color:#3c4553}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:32px;align-items:start}
.info-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px dashed var(--line)}
.info-item:last-child{border-bottom:none}
.info-item .k{width:88px;color:var(--muted);flex-shrink:0;font-size:14.5px}
.info-item .v{color:var(--text);font-size:15px;word-break:break-all}
.map-box{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--bg);min-height:360px;display:flex;align-items:center;justify-content:center;color:var(--muted);padding:24px;text-align:center}
.map-box iframe{width:100%;height:420px;border:0;display:block}

/* 页脚 */
.footer{background:#0f1b2d;color:#9fb0c7;padding:48px 0 0;margin-top:20px}
.footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;padding-bottom:36px}
.footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer p,.footer li{font-size:13.8px;line-height:2}
.footer ul{list-style:none}
.footer a:hover{color:#fff}
.footer .copy{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:13px;color:#8595ad}
.footer .copy a{color:#a9bcd8}
.footer .copy a:hover{color:#fff;text-decoration:underline}

@media (max-width:980px){
  .grid.col4{grid-template-columns:repeat(2,1fr)}
  .grid.col3{grid-template-columns:repeat(2,1fr)}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer .cols{grid-template-columns:1fr}
  .hero h1{font-size:30px}
}
@media (max-width:640px){
  .grid.col4,.grid.col3,.grid.col2{grid-template-columns:1fr}
  .nav .wrap{height:auto;padding:14px 20px;flex-direction:column;align-items:flex-start}
  .hero{padding:56px 0 64px}
  .hero h1{font-size:25px}
  .list-item{flex-direction:column;align-items:flex-start;gap:8px}
  .detail{padding:24px 20px}
}