:root{
  --ink:#0d1b2a;--body:#25384f;--muted:#61748c;--line:#e2e8f0;
  --accent:#1d4ed8;--accent-d:#1e40af;--accent-l:#eff4ff;
  --amber:#c2410c;--amber-l:#fff7ed;--bg:#ffffff;--bg-soft:#f7f9fc;
  --radius:10px;--shadow:0 1px 2px rgba(13,27,42,.05),0 12px 30px -20px rgba(13,27,42,.35)
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  color:var(--body);background:var(--bg);line-height:1.75;font-size:16px;letter-spacing:.01em}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{color:var(--ink);line-height:1.35;letter-spacing:-.01em}
img,svg{max-width:100%;display:block}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}
.narrow{max-width:900px}

/* ---------- 顶部 ---------- */
.topbar{background:var(--ink);color:#c7d4e6;font-size:13.5px}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:38px;flex-wrap:wrap}
.topbar a{color:#fff}
.topbar .tb-r{display:flex;gap:18px;align-items:center}
.topbar .tb-r span{color:#8fa3bd}
header.site{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line)}
.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:66px}
.logo{display:flex;align-items:baseline;gap:9px;font-weight:800;font-size:21px;color:var(--ink);
  letter-spacing:-.02em;text-decoration:none}
.logo:hover{text-decoration:none}
.logo b{color:var(--accent);font-weight:800}
.logo small{font-size:12.5px;font-weight:600;color:var(--muted);letter-spacing:.02em}
nav.main{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
nav.main>.grp{position:relative}
nav.main>.grp>span,nav.main>a{padding:8px 13px;border-radius:8px;font-size:14.5px;color:var(--body);
  white-space:nowrap;cursor:default;display:inline-block}
nav.main>a{cursor:pointer}
nav.main>.grp:hover>span{background:var(--accent-l);color:var(--accent-d)}
nav.main>a:hover{background:var(--accent-l);color:var(--accent-d);text-decoration:none}
.drop{position:absolute;top:calc(100% + 4px);left:0;background:#fff;border:1px solid var(--line);
  border-radius:12px;box-shadow:var(--shadow);padding:8px;min-width:206px;display:none}
nav.main>.grp:hover .drop,nav.main>.grp:focus-within .drop{display:block}
.drop a{display:block;padding:8px 12px;border-radius:8px;font-size:14px;color:var(--body)}
.drop a:hover{background:var(--bg-soft);text-decoration:none;color:var(--accent-d)}
.btn{display:inline-block;padding:11px 20px;border-radius:9px;font-weight:600;font-size:15px;
  border:1px solid transparent;transition:.18s;cursor:pointer}
.btn-p{background:var(--accent);color:#fff}
.btn-p:hover{background:var(--accent-d);text-decoration:none;color:#fff}
.btn-g{border-color:var(--line);color:var(--ink);background:#fff}
.btn-g:hover{border-color:var(--accent);color:var(--accent-d);text-decoration:none}

/* ---------- 主体 ---------- */
main{display:block;min-height:50vh}
.crumb{font-size:13.5px;color:var(--muted);padding:18px 0 0}
.crumb a{color:var(--muted)}
.crumb span{margin:0 7px;color:#c3ceda}
.hero{padding:44px 0 8px}
.hero h1{font-size:clamp(27px,3.5vw,42px);font-weight:800;max-width:920px}
.hero .lead{margin-top:18px;font-size:17px;color:var(--body);max-width:860px}
.hero .cta{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap}
section.blk{padding:40px 0 6px}
section.blk>div>h2,section.blk h2{font-size:clamp(21px,2.3vw,28px);font-weight:750;margin-bottom:6px}
section.blk .intro{color:var(--muted);margin-bottom:22px;max-width:860px}
section.blk p{margin:12px 0}
ul.ticks{list-style:none;margin:14px 0 6px;display:grid;gap:12px}
ul.ticks>li{position:relative;padding-left:30px}
ul.ticks>li::before{content:"";position:absolute;left:4px;top:.62em;width:9px;height:9px;border-radius:2px;
  background:var(--accent);transform:rotate(45deg)}
ul.ticks b{color:var(--ink)}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(268px,1fr));margin-top:6px}
.card{border:1px solid var(--line);border-radius:14px;padding:22px;background:#fff;transition:.2s}
.card:hover{border-color:#c7d6ee;box-shadow:var(--shadow);transform:translateY(-2px)}
.card h3{font-size:17px;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--body);margin:0}
.card .more{display:inline-block;margin-top:12px;font-size:14px;font-weight:600}
.stats{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));margin-top:10px}
.stat{background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:20px}
.stat b{display:block;font-size:27px;font-weight:800;color:var(--accent-d);letter-spacing:-.02em}
.stat span{font-size:14px;color:var(--muted)}
.steps{margin-top:10px;display:grid;gap:16px;counter-reset:s}
.step{position:relative;border:1px solid var(--line);border-radius:14px;padding:22px 22px 20px 62px;background:#fff}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);position:absolute;left:20px;top:22px;
  font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.02em}
.step h3{font-size:16.5px;margin-bottom:6px}
.step p{margin:0;font-size:14.5px}
.tline{margin-top:10px;border-left:2px solid var(--line);padding-left:22px;display:grid;gap:18px}
.tline .ti{position:relative}
.tline .ti::before{content:"";position:absolute;left:-29px;top:.55em;width:11px;height:11px;border-radius:50%;
  background:#fff;border:3px solid var(--accent)}
.tline .ti b{display:block;color:var(--ink);font-size:15px}
.tline .ti p{margin:4px 0 0;font-size:14.5px}
.tblwrap{overflow-x:auto;margin:16px 0 6px;border:1px solid var(--line);border-radius:12px}
table.data{border-collapse:collapse;width:100%;min-width:620px;font-size:14.5px;background:#fff}
table.data th,table.data td{border-bottom:1px solid var(--line);padding:13px 15px;text-align:left;vertical-align:top}
table.data thead th{background:var(--bg-soft);color:var(--ink);font-weight:700;white-space:nowrap;font-size:14px}
table.data tbody tr:last-child td{border-bottom:none}
table.data td:first-child{color:var(--ink);font-weight:600}
details.faq{border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:12px;background:#fff}
details.faq[open]{border-color:#c7d6ee}
details.faq summary{cursor:pointer;font-weight:650;color:var(--ink);font-size:16px;list-style:none}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::before{content:"Q ";color:var(--accent);font-weight:800;margin-right:4px}
details.faq p{margin:12px 0 0;font-size:15px;color:var(--body)}
.cta-band{margin:44px 0 6px;background:linear-gradient(135deg,#0d1b2a,#15294a);border-radius:16px;
  padding:34px 30px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap}
.cta-band p{color:#b9c8dd;font-size:15.5px;margin:6px 0 0;max-width:620px}
.cta-band h3{color:#fff;font-size:21px;font-weight:750}
.cta-band .btn-p{background:#fff;color:var(--ink)}
.cta-band .btn-p:hover{background:#e8eefb;color:var(--ink)}
.linkmore{display:inline-block;margin-top:14px;font-weight:600;font-size:14.5px}

/* ---------- 联系/表单 ---------- */
.contact-band{margin:46px 0 0;background:var(--bg-soft);border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);padding:40px 0}
.contact-band h2{font-size:clamp(21px,2.4vw,27px);font-weight:750}
.contact-grid{display:grid;gap:26px;grid-template-columns:1fr 1fr;margin-top:22px;align-items:start}
.cinfo{display:grid;gap:14px;align-content:start}
.cinfo .row{display:flex;gap:13px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:16px}
.cinfo .row svg{flex:0 0 20px;margin-top:3px;color:var(--accent)}
.cinfo .row b{display:block;color:var(--ink);font-size:14px;margin-bottom:2px;font-weight:650}
.cinfo .row span,.cinfo .row a{font-size:15px;color:var(--body)}
.telbig{font-size:26px;font-weight:800;color:var(--accent-d);letter-spacing:-.01em}
form.lead{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow)}
form.lead h3{font-size:17px;margin-bottom:4px}
form.lead .hint{font-size:13.5px;color:var(--muted);margin-bottom:14px}
form.lead input,form.lead select{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:9px;
  font-size:15px;margin-bottom:10px;font-family:inherit;color:var(--ink);background:#fff}
form.lead input:focus,form.lead select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-l)}
form.lead button{width:100%;padding:13px;border:none;border-radius:9px;background:var(--accent);color:#fff;
  font-size:15.5px;font-weight:650;cursor:pointer;font-family:inherit}
form.lead button:hover{background:var(--accent-d)}
form.lead button[disabled]{opacity:.6;cursor:default}
.tip{margin-top:10px;font-size:14px;min-height:20px}
.tip.ok{color:#15803d}.tip.err{color:#b91c1c}

/* ---------- 页脚 ---------- */
footer.site{background:var(--ink);color:#a9b8cc;margin-top:0;padding:40px 0 26px;font-size:14px}
footer.site h4{color:#fff;font-size:15px;margin-bottom:12px}
footer.site a{color:#cdd9e8}
.fgrid{display:grid;gap:28px;grid-template-columns:1.4fr 1fr 1fr 1.2fr}
.flist{list-style:none;display:grid;gap:7px}
.fbot{border-top:1px solid rgba(255,255,255,.1);margin-top:30px;padding-top:18px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:#8798ab}
.fent{font-size:13px;color:#8798ab;line-height:1.85}
@media(max-width:900px){.contact-grid{grid-template-columns:1fr}.fgrid{grid-template-columns:1fr 1fr}}
@media(max-width:680px){
  nav.main{display:none}
  .topbar .tb-r span{display:none}
  .hero{padding:32px 0 4px}
  .fgrid{grid-template-columns:1fr}
  .cta-band{padding:26px 22px}
}