:root{--ink:#111827;--text:#4b5563;--muted:#9ca3af;--teal:#14b8a6;--teal-d:#0f766e;--link:#4ab3c8;--line:#eef0f3;--mint:#f0fdfa}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;color:var(--text);background:#fff;-webkit-font-smoothing:antialiased}
a{color:inherit}
img,svg{display:block}

/* ---------- layout ---------- */
.wrap{max-width:880px;margin:0 auto;padding:0 32px}
main.wrap{padding-bottom:64px}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.hwrap{max-width:1240px;margin:0 auto;padding:0 32px;height:76px;display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:18.9px;flex:none}
.brand svg{width:40px;height:40px}
.mainnav{display:flex;gap:30px;margin:0 auto}
.mainnav a{text-decoration:none;color:#374151;font-size:15.3px;font-weight:500;white-space:nowrap}
.mainnav a:hover,.mainnav a.on{color:var(--teal-d)}
.search{position:relative;flex:none;width:240px}
.search svg{position:absolute;left:14px;top:50%;width:18px;height:18px;transform:translateY(-50%);color:#9ca3af}
.search input[type=search]{width:100%;height:42px;border:1px solid #e5e7eb;border-radius:8px;padding:0 14px 0 42px;font:400 14.4px 'Inter',system-ui,sans-serif;color:var(--ink);outline:none}
.search input:focus{border-color:var(--teal)}
.menu{display:none;margin-left:auto;background:none;border:0;padding:6px;cursor:pointer;color:var(--ink)}
.menu svg{width:26px;height:26px}

/* ---------- breadcrumbs ---------- */
.crumbs{background:#f9fafb;border-bottom:1px solid var(--line)}
.crumbs .wrap{padding-top:16px;padding-bottom:16px;font-size:14.4px;color:#6b7280}
.crumbs a{text-decoration:none}
.crumbs a:hover{color:var(--teal-d)}
.crumbs b{font-weight:400;color:var(--ink)}
.crumbs span{margin:0 10px;color:#9ca3af}

/* ---------- type ---------- */
h1{color:var(--ink);font-size:37.8px;line-height:1.28;font-weight:700;margin:28px 0 32px;letter-spacing:-.01em}
h2{color:var(--ink);font-size:23.4px;line-height:1.3;font-weight:700;margin:48px 0 14px}
h3{color:var(--ink);font-size:16.2px;font-weight:600;margin:28px 0 8px}
p{font-size:16.2px;line-height:1.7;margin:0 0 16px}
hr{border:0;border-top:1px solid var(--line);margin:48px 0}

/* ---------- article parts ---------- */
.jump{display:flex;justify-content:space-between;align-items:center;background:var(--link);color:#fff;font-weight:700;font-size:18px;padding:20px 24px;border-radius:12px;margin:0 0 15px;text-decoration:none;box-shadow:0 2px 6px rgba(0,0,0,.08)}
.jump:hover{filter:brightness(.96)}
.jump svg{width:20px;height:20px;flex:none;margin-left:12px}
.redir{text-align:center;color:var(--muted);font-size:15.3px;margin:-4px 0 0}
ul.dots{list-style:none;padding:0;margin:8px 0 16px}
ul.dots li{position:relative;padding-left:18px;font-size:16.2px;line-height:1.6;margin:0 0 10px}
ul.dots li::before{content:"";position:absolute;left:0;top:.6em;width:7px;height:7px;border-radius:50%;background:var(--teal)}
.tbl{border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:16px 0 8px;overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:15.3px;min-width:480px}
th{background:var(--mint);color:var(--ink);text-align:left;font-weight:600;padding:16px 20px}
td{padding:14px 20px;border-top:1px solid var(--line);color:#374151}
td.num{white-space:nowrap}
.note{font-size:12.6px;color:var(--muted);line-height:1.6;margin:6px 0 0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:20px 0 8px}
.stat{border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.stat b{display:block;color:var(--teal-d);font-size:21.6px;font-weight:700;margin-bottom:4px}
.stat span{font-size:12.6px;line-height:1.45}
.warn{border-left:4px solid #f59e0b;background:#fffbeb;border-radius:8px;padding:16px 20px;margin:20px 0}
.warn p{margin:0;font-size:15.3px;color:#78350f}
.faq h3{font-size:16.2px}
.faq p{margin-bottom:6px}
.tags{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:28px 0 36px}
.tags span{background:#f3f4f6;border-radius:999px;padding:6px 15px;font-size:13.5px;color:#4b5563}

/* ---------- cards ---------- */
.agrid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin:20px 0}
.acard{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:14px;overflow:hidden;text-decoration:none;box-shadow:0 2px 6px rgba(0,0,0,.05);transition:box-shadow .15s}
.acard:hover{box-shadow:0 6px 18px rgba(0,0,0,.08)}
.aimg svg{width:100%;height:auto}
.abody{padding:22px 24px 20px;display:flex;flex-direction:column;flex:1}
.pill{align-self:flex-start;background:var(--mint);color:var(--teal-d);font-size:12.6px;font-weight:600;padding:4px 12px;border-radius:999px}
.abody h3{font-size:18px;line-height:1.35;font-weight:700;margin:14px 0 10px}
.abody p{font-size:14.4px;line-height:1.65;margin:0 0 16px}
.meta{margin-top:auto;display:flex;gap:16px;font-size:12.6px;color:var(--muted)}
.meta .go{margin-left:auto;color:var(--teal);font-size:16.2px;line-height:1}
.explore{margin-top:56px;padding-top:40px;border-top:1px solid var(--line)}
.explore h2{margin-top:0}
.egrid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.ecard{border:1px solid var(--line);border-radius:12px;padding:20px;text-decoration:none;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.ecard:hover{box-shadow:0 4px 14px rgba(0,0,0,.07)}
.ecard i,.cathead i{display:block;width:40px;height:6px;border-radius:3px;margin-bottom:16px}
.ecard h4{color:var(--ink);font-size:15.3px;font-weight:600;margin:0 0 6px}
.ecard p{font-size:13.1px;line-height:1.6;margin:0}

/* ---------- pages ---------- */
.cathead{padding:36px 0 8px}
.cathead h1{margin:0 0 12px}
.empty{border:1px dashed #d1d5db;border-radius:12px;padding:18px 22px;margin:20px 0 0}
.empty p{margin:0;font-size:14.4px}
.hero{padding:48px 0 16px}
.hero h1{font-size:41.4px;margin:0 0 16px}
.hero p{font-size:17.1px;max-width:680px}
.hstats{display:flex;gap:40px;margin-top:28px}
.hstats b{display:block;color:var(--teal-d);font-size:25.2px}
.hstats span{font-size:12.6px}
.sec{margin-top:48px}
.prose{padding-top:8px}
.prose h2{font-size:19.8px;margin-top:36px}
.prose a{color:var(--teal-d)}
.upd{color:var(--muted);font-size:13.5px}

/* ---------- footer ---------- */
.site-foot{border-top:1px solid var(--line);background:#fafafa;padding:48px 0 32px}
.site-foot .wrap{max-width:1240px}
.fgrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:36px}
.fgrid p{font-size:13.5px;line-height:1.6;margin:14px 0 0;max-width:340px}
.fgrid h5{color:var(--ink);font-size:12.6px;letter-spacing:.05em;text-transform:uppercase;margin:6px 0 14px}
.fgrid a:not(.brand){display:block;text-decoration:none;font-size:13.5px;margin:0 0 10px}
.fgrid a:hover{color:var(--teal-d)}
.disc{border-top:1px solid var(--line);padding-top:24px}
.disc h4{font-size:13.5px;letter-spacing:.04em;color:#6b7280;margin:0 0 8px}
.disc p{font-size:13.5px;line-height:1.65;color:var(--muted)}
.copy{font-size:12.6px;color:var(--muted);margin:16px 0 0}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .search{width:190px}
  .mainnav{gap:20px}
  .mainnav a{font-size:14.4px}
}
@media (max-width:900px){
  .hwrap{height:64px;gap:12px}
  .menu{display:block}
  .search{display:none}
  .mainnav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 8px 16px rgba(0,0,0,.06)}
  .mainnav a{padding:16px 24px;border-top:1px solid var(--line)}
  body.nav-open .mainnav{display:flex}
  .egrid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .wrap,.hwrap{padding:0 24px}
  h1,.hero h1{font-size:27px}
  h2{font-size:19.8px}
  p,ul.dots li{font-size:14.8px}
  .jump{font-size:15.3px;padding:18px}
  .stats{grid-template-columns:repeat(2,1fr)}
  table{font-size:13.5px}
  th,td{padding:12px 14px}
  .agrid,.fgrid{grid-template-columns:1fr}
  .hstats{gap:24px;flex-wrap:wrap}
  .brand{font-size:17.1px}
  .brand svg{width:36px;height:36px}
}
.eyebrow{font-size:14px;letter-spacing:.1em;color:var(--ink);margin:0 0 4px}