:root{--blue:#016FFF;--blue-d:#0b4ed6;--ink:#0e1a2b;--muted:#5b6b82;--line:#e4ecf7;--bg:#f5f9ff;--ok:#0a8f5b}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;color:var(--ink);background:#fff;line-height:1.85;font-size:16px}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
/* header */
.site-head{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;gap:18px;height:62px}
.brand{display:flex;align-items:baseline;gap:8px;font-weight:700;font-size:19px;color:var(--ink);white-space:nowrap}
.brand:hover{text-decoration:none}
.brand span{font-size:12px;font-weight:400;color:var(--muted)}
.nav{display:flex;gap:2px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav a{color:#33445c;font-size:14px;padding:7px 10px;border-radius:6px;white-space:nowrap}
.nav a:hover{background:var(--bg);color:var(--blue);text-decoration:none}
.nav a.on{color:var(--blue);background:#eaf2ff;font-weight:600}
.tel-btn{display:inline-flex;align-items:center;gap:6px;background:var(--blue);color:#fff!important;font-size:14px;font-weight:600;padding:9px 15px;border-radius:8px;white-space:nowrap}
.tel-btn:hover{background:var(--blue-d);text-decoration:none}
/* hero */
.hero{background:linear-gradient(180deg,#eef5ff 0%,#f8fbff 100%);border-bottom:1px solid var(--line);padding:52px 0 44px}
.crumb{font-size:13px;color:var(--muted);margin-bottom:16px}
.crumb a{color:var(--muted)}
h1{font-size:33px;line-height:1.35;letter-spacing:-.3px;max-width:900px}
.lead{margin-top:18px;font-size:17px;color:#2a3a52;max-width:880px;padding-left:16px;border-left:4px solid var(--blue);background:rgba(255,255,255,.7);padding:14px 18px;border-radius:0 8px 8px 0}
.facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.fact{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 14px;font-size:13.5px;color:var(--muted)}
.fact b{display:block;color:var(--ink);font-size:15px;font-weight:600;margin-top:2px}
/* main */
main{padding:46px 0 10px}
section{margin-bottom:44px;scroll-margin-top:80px}
h2{font-size:23px;line-height:1.5;margin-bottom:14px;padding-left:12px;border-left:5px solid var(--blue)}
h3{font-size:17.5px;margin:22px 0 8px;color:#152238}
p{margin:10px 0;color:#2b3a50}
ul,ol{margin:10px 0 10px 22px;color:#2b3a50}
li{margin:6px 0}
strong{color:#0d1b2e}
table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14.5px;background:#fff}
th,td{border:1px solid var(--line);padding:11px 12px;text-align:left;vertical-align:top}
th{background:#eff5ff;font-weight:600;color:#152238;white-space:nowrap}
tbody tr:nth-child(even){background:#fafcff}
.note{background:#f5f9ff;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:0 8px 8px 0;padding:14px 18px;font-size:14.5px;color:#33445c;margin:16px 0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;margin:18px 0}
.card{border:1px solid var(--line);border-radius:12px;padding:18px 18px 16px;background:#fff}
.card h4{font-size:16px;margin-bottom:6px;color:#0d1b2e}
.card p{font-size:14px;color:var(--muted);margin:0}
.card .tag{display:inline-block;font-size:12px;color:var(--blue);background:#eaf2ff;border-radius:5px;padding:2px 8px;margin-bottom:9px}
/* faq */
details{border:1px solid var(--line);border-radius:10px;padding:0;margin:10px 0;background:#fff}
details[open]{border-color:#cfe0ff;background:#fbfdff}
summary{cursor:pointer;padding:14px 18px;font-weight:600;font-size:15.5px;color:#152238;list-style:none}
summary::-webkit-details-marker{display:none}
summary::before{content:"Q ";color:var(--blue);font-weight:700}
details p{padding:0 18px 14px;margin:0;font-size:14.8px;color:#3a4a60}
/* cta */
.cta{background:linear-gradient(135deg,#0b4ed6,#016FFF);border-radius:16px;color:#fff;padding:32px 30px;margin:10px 0 46px}
.cta h2{border:0;padding:0;color:#fff;font-size:22px;margin-bottom:8px}
.cta p{color:rgba(255,255,255,.9);margin:6px 0 16px}
.cta .btns{display:flex;flex-wrap:wrap;gap:12px}
.cta .b1{background:#fff;color:var(--blue);font-weight:700;padding:11px 20px;border-radius:9px}
.cta .b2{border:1px solid rgba(255,255,255,.6);color:#fff;padding:11px 20px;border-radius:9px}
.cta a:hover{text-decoration:none;opacity:.92}
/* footer */
.site-foot{border-top:1px solid var(--line);background:#f8fbff;padding:34px 0 40px;font-size:13.5px;color:var(--muted)}
.site-foot .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:26px}
.site-foot h5{font-size:14px;color:var(--ink);margin-bottom:8px}
.site-foot a{color:#41536b}
.site-foot .cp{margin-top:24px;padding-top:16px;border-top:1px solid var(--line);font-size:12.5px;color:#7b8aa0}
@media(max-width:820px){
  h1{font-size:25px}
  h2{font-size:19.5px}
  .hero{padding:34px 0 30px}
  .site-foot .cols{grid-template-columns:1fr}
  .nav{display:none}
  .site-head .wrap{justify-content:space-between}
  table{font-size:13px}
  th,td{padding:9px 8px}
}