:root{
  --ink:#14181f;--ink-2:#3c4350;--muted:#6b7280;--faint:#9aa1ad;
  --line:rgba(20,24,31,.1);--line-2:rgba(20,24,31,.06);--paper:#fff;--bg:#f3f7f8;
  --lime:#cdf256;--lime-deep:#bce63c;--lime-soft:#eaf9bd;--coral:#ff7a45;--coral-soft:#ffe3d4;--sky:#bfe3ef;
  --sans:'Plus Jakarta Sans',-apple-system,system-ui,sans-serif;--mono:'JetBrains Mono',ui-monospace,monospace;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;line-height:1.62;}
.backdrop{position:fixed;inset:0;z-index:0;pointer-events:none;background:radial-gradient(120% 60% at 50% -10%,rgba(191,227,239,.7),rgba(243,247,248,0) 55%),linear-gradient(180deg,#eef6f8,#f5f8f6 55%,#fdf4ec);}

/* top nav */
.lnav{position:sticky;top:0;z-index:50;background:rgba(243,247,248,.82);backdrop-filter:blur(16px) saturate(1.3);border-bottom:1px solid var(--line-2);}
.lnav-in{max-width:1080px;margin:0 auto;padding:14px 28px;display:flex;align-items:center;justify-content:space-between;gap:18px;}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);}
.logo-mark{width:34px;height:34px;border-radius:11px;background:var(--ink);display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 4px 14px -4px rgba(20,24,31,.5);}
.brand-name{font-weight:800;font-size:18px;letter-spacing:-.4px;white-space:nowrap;line-height:1;}
.lnav-links{display:flex;align-items:center;gap:4px;flex-wrap:wrap;}
.lnav-links a{font-family:var(--mono);font-size:12.5px;font-weight:500;color:var(--ink-2);text-decoration:none;padding:8px 13px;border-radius:100px;transition:background .18s,color .18s;}
.lnav-links a:hover{background:rgba(20,24,31,.05);color:var(--ink);}
.lnav-links a.active{background:var(--ink);color:#fff;}

/* layout */
.shell{position:relative;z-index:1;max-width:1080px;margin:0 auto;padding:54px 28px 40px;}
.doc-head{max-width:760px;margin:0 auto 14px;}
.kicker{font-family:var(--mono);font-size:12px;letter-spacing:.8px;text-transform:uppercase;color:var(--coral);font-weight:600;}
h1{font-size:clamp(32px,5vw,46px);font-weight:800;letter-spacing:-1.4px;line-height:1.05;margin:12px 0 14px;}
.meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-family:var(--mono);font-size:12px;color:var(--muted);}
.meta .pill{background:rgba(255,255,255,.7);border:1px solid var(--line);padding:6px 13px;border-radius:100px;}
.meta .pill b{color:var(--ink);font-weight:600;}

.layout{display:grid;grid-template-columns:1fr;gap:30px;max-width:760px;margin:0 auto;}
.layout.has-toc{grid-template-columns:230px 1fr;max-width:1024px;align-items:start;}

/* TOC */
.toc{position:sticky;top:90px;align-self:start;}
.toc .toc-label{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--faint);margin-bottom:12px;}
.toc ol{list-style:none;counter-reset:t;display:flex;flex-direction:column;gap:2px;}
.toc li{counter-increment:t;}
.toc a{display:flex;gap:9px;font-size:13px;color:var(--ink-2);text-decoration:none;padding:7px 10px;border-radius:9px;line-height:1.35;transition:background .15s,color .15s;}
.toc a::before{content:counter(t,decimal-leading-zero);font-family:var(--mono);font-size:11px;color:var(--faint);flex-shrink:0;}
.toc a:hover{background:rgba(255,255,255,.7);color:var(--ink);}

/* body */
.doc{background:#fff;border:1px solid var(--line);border-radius:24px;padding:clamp(26px,4vw,46px);box-shadow:0 30px 60px -44px rgba(20,24,31,.4);}
.intro{font-size:17px;color:var(--ink-2);font-weight:500;margin-bottom:8px;}
.doc section{scroll-margin-top:90px;padding-top:30px;}
.doc section:first-of-type{padding-top:18px;}
.doc h2{font-size:20px;font-weight:800;letter-spacing:-.5px;margin-bottom:12px;display:flex;align-items:baseline;gap:10px;}
.doc h2 .n{font-family:var(--mono);font-size:13px;color:var(--coral);font-weight:600;flex-shrink:0;}
.doc h3{font-size:15px;font-weight:700;margin:20px 0 8px;}
.doc p{font-size:15px;color:var(--ink-2);margin-bottom:12px;}
.doc p:last-child{margin-bottom:0;}
.doc ul{margin:0 0 12px;padding-left:4px;list-style:none;display:flex;flex-direction:column;gap:8px;}
.doc ul li{font-size:15px;color:var(--ink-2);padding-left:24px;position:relative;line-height:1.55;}
.doc ul li::before{content:'';position:absolute;left:4px;top:9px;width:7px;height:7px;border-radius:2px;background:var(--lime-deep);}
.doc ul li b{color:var(--ink);font-weight:700;}
.doc a{color:#5b7a09;text-decoration:underline;text-underline-offset:2px;font-weight:600;}
.doc a:hover{color:#445e07;}
.doc strong, .doc b{color:var(--ink);}

.divider{height:1px;background:var(--line-2);margin:30px 0 0;}

/* callout */
.callout{background:var(--lime-soft);border:1px solid rgba(120,160,20,.25);border-radius:16px;padding:18px 20px;margin:18px 0;}
.callout.warn{background:var(--coral-soft);border-color:rgba(255,122,69,.3);}
.callout .ct{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:1px;font-weight:600;margin-bottom:8px;color:#5b7a09;}
.callout.warn .ct{color:#c8521f;}
.callout p{margin-bottom:0;font-size:14px;color:var(--ink-2);}

/* data table */
.dtable{border:1px solid var(--line);border-radius:14px;overflow:hidden;margin:6px 0 12px;}
.dtable .drow{display:grid;grid-template-columns:1fr 1.4fr;gap:0;border-bottom:1px solid var(--line-2);}
.dtable .drow:last-child{border-bottom:none;}
.dtable .dk{padding:13px 16px;font-weight:700;font-size:13.5px;background:rgba(20,24,31,.025);}
.dtable .dv{padding:13px 16px;font-size:13.5px;color:var(--ink-2);}

/* contact card */
.contact{display:flex;flex-wrap:wrap;align-items:center;gap:14px;background:var(--ink);border-radius:18px;padding:22px 24px;margin-top:8px;}
.contact .ci{flex:1;min-width:200px;}
.contact .clabel{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--lime);margin-bottom:6px;}
.contact .cval{color:#fff;font-size:15px;font-weight:600;}
.contact .cval a{color:#fff;}
.contact .btn{font-family:var(--sans);font-weight:700;font-size:14.5px;background:var(--lime);color:var(--ink);border-radius:100px;padding:13px 24px;text-decoration:none;white-space:nowrap;}
.contact .btn:hover{background:var(--lime-deep);}

footer{position:relative;z-index:1;border-top:1px solid var(--line);max-width:1024px;margin:30px auto 0;padding:30px 28px 56px;display:flex;flex-wrap:wrap;gap:18px 24px;justify-content:space-between;align-items:center;}
.foot-note{font-family:var(--mono);font-size:12.5px;color:var(--muted);position:relative;top:2px;}
.foot-links{display:flex;gap:14px 18px;flex-wrap:wrap;}
.foot-links a{font-size:13.5px;font-weight:600;color:var(--ink-2);text-decoration:none;}
.foot-links a:hover{color:var(--ink);}

@media(max-width:880px){
  .layout.has-toc{grid-template-columns:1fr;}
  .toc{position:static;display:none;}
  footer{flex-direction:column;text-align:center;gap:20px;}
  .foot-links{justify-content:center;}
}
@media print{
  *{-webkit-print-color-adjust:exact;print-color-adjust:exact;}
  @page{margin:14mm;}
  .backdrop,.lnav,.toc,footer .foot-links{display:none;}
  .layout.has-toc{grid-template-columns:1fr;}
  .doc{box-shadow:none;border:none;padding:0;}
  .shell{padding-top:10px;}
  .doc section{break-inside:avoid;}
}