:root{
  --ink:#1f2937;--muted:#6b7280;--line:#e5e7eb;--brand:#2563eb;--brand2:#0d9488;
  --bg:#f5f7fb;--card:#fff;--soft:#eef4ff;--warm:#fff7ed;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.75;font-size:16px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:980px;margin:0 auto;padding:0 18px}
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:9}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px}
.brand{font-weight:800;font-size:16px;color:var(--ink);white-space:nowrap}
.top nav{display:flex;gap:14px;font-size:14px;flex-wrap:wrap;justify-content:flex-end}
.top nav a{color:#374151}
main{padding:26px 0 40px}
.hero{background:linear-gradient(135deg,#eaf2ff,#f0fdfa);border:1px solid #dbeafe;
  border-radius:20px;padding:28px 26px;margin-bottom:22px}
.hero h1{font-size:clamp(22px,4.2vw,32px);line-height:1.35;margin-bottom:10px}
.hero p{color:#475569;font-size:15px}
.hero .tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.tag{background:#fff;border:1px solid #dbeafe;color:#1d4ed8;border-radius:999px;
  padding:3px 11px;font-size:12px}
h2{font-size:21px;margin:26px 0 12px}
h3{font-size:17px;margin:18px 0 8px}
p{margin:8px 0}
small,.small{font-size:13px;color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;margin:18px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;
  box-shadow:0 6px 20px rgba(15,23,42,.04);display:flex;flex-direction:column;gap:8px}
.card h3{margin:0;font-size:18px}
.card p{color:#4b5563;font-size:14px;flex:1}
.card .go{font-weight:700;color:var(--brand);font-size:14px}
.card:hover{border-color:#bfdbfe;transform:translateY(-1px);transition:.15s}
.badge{display:inline-block;background:var(--soft);color:#1d4ed8;border-radius:8px;
  padding:2px 9px;font-size:12px;font-weight:700}
.badge.green{background:#ecfdf5;color:#047857}
.badge.warm{background:var(--warm);color:#b45309}
.panel{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;margin:16px 0}
.form{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;align-items:end}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:5px}
.field input,.field select{width:100%;border:1px solid #d1d5db;border-radius:10px;
  padding:10px 12px;font-size:15px;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:12px;
  padding:11px 22px;font-size:15px;font-weight:700;cursor:pointer;text-align:center}
.btn:hover{background:#1d4ed8;text-decoration:none}
.btn.ghost{background:#fff;color:var(--brand);border:1px solid #bfdbfe}
.btn.small{padding:7px 14px;font-size:13px;border-radius:9px}
.result{background:linear-gradient(135deg,#eff6ff,#f0fdfa);border:1px solid #bfdbfe;
  border-radius:16px;padding:20px;margin:16px 0}
.result .big{font-size:34px;font-weight:800;color:#1d4ed8;line-height:1.2}
.result .row{display:flex;gap:22px;flex-wrap:wrap;margin-top:8px}
.result .row div{font-size:14px;color:#475569}
.result .row b{font-size:18px;color:var(--ink);display:block}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin:14px 0}
.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.stat b{display:block;font-size:22px;color:#1d4ed8}
.stat span{font-size:12px;color:var(--muted)}
table{width:100%;border-collapse:collapse;background:#fff;font-size:14px}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;margin:12px 0}
th,td{padding:9px 11px;border-bottom:1px solid #f1f5f9;text-align:left;white-space:nowrap}
th{background:#f8fafc;color:#475569;font-size:13px;font-weight:700;position:sticky;top:0}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:#f8fbff}
.num{font-variant-numeric:tabular-nums}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 16px}
.tabs a{padding:8px 14px;border-radius:999px;border:1px solid #dbeafe;background:#fff;
  font-size:14px;color:#1e40af}
.tabs a.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.grid-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:9px;margin:12px 0}
.grid-links a{background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 12px;
  font-size:14px;color:#1f2937}
.grid-links a:hover{border-color:#bfdbfe;background:#f8fbff;text-decoration:none}
.note{background:#fffbeb;border:1px solid #fde68a;border-radius:12px;padding:12px 14px;
  font-size:13px;color:#92400e;margin:12px 0}
.good{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:12px;padding:12px 14px;
  font-size:13px;color:#166534;margin:12px 0}
.cta{background:linear-gradient(135deg,#1e40af,#0f766e);border-radius:18px;padding:24px;
  text-align:center;margin:26px 0;color:#fff}
.cta .btn-plan{display:inline-block;background:#fff;color:#1e40af;font-weight:800;
  border-radius:12px;padding:13px 28px;font-size:16px}
.cta .btn-plan:hover{background:#eff6ff;text-decoration:none}
.cta-note{color:#dbeafe;font-size:13px;margin-top:10px}
.faq{border-top:1px solid var(--line);margin-top:26px;padding-top:8px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:9px 0}
.faq summary{cursor:pointer;font-weight:700;font-size:15px}
.faq p{font-size:14px;color:#4b5563}
.foot{background:#0f172a;color:#cbd5e1;padding:26px 0;font-size:13px}
.foot p{margin:7px 0}
.foot a{color:#93c5fd}
.foot .disc{color:#e2e8f0}
.foot .src{color:#94a3b8}
.foot .copy{color:#64748b;margin-top:12px}
.crumb{font-size:13px;color:var(--muted);margin-bottom:8px}
.crumb a{color:#64748b}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:700px){
  .top .wrap{height:auto;padding:10px 0;flex-direction:column;align-items:flex-start}
  .top nav{gap:10px;font-size:13px}
  main{padding-top:18px}
  .hero{padding:20px}
  .two{grid-template-columns:1fr}
  .result .big{font-size:28px}
  th,td{padding:8px}
}