:root{--bg:#FBF7F2;--bg2:#F5EEE6;--ink:#1F1A17;--ink2:#171013;--soft:#4f4741;--muted:#8b7f75;--line:#ece3d9;--rose:#E7929A;--peach:#FFCE9E;--coral:#F4A794;--forest:#1E4638;--forestsoft:#E1EAE4;
--grad:linear-gradient(92deg,var(--peach),var(--rose));--font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;--shadow:0 1px 2px rgba(31,26,23,.04),0 12px 40px rgba(31,26,23,.06)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:84px}
body{font-family:var(--font);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;line-height:1.5;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.logo{height:24px;width:auto;display:block}.logo.f{height:22px;margin-bottom:14px}

nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);background:rgba(251,247,242,.82);border-bottom:1px solid transparent;transition:border-color .3s}
nav.sc{border-bottom-color:var(--line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
nav .links{display:flex;align-items:center;gap:28px;font-weight:600;font-size:14.5px}
nav .links a:not(.btn){color:var(--soft)}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:14px;padding:10px 18px;border-radius:999px;background:var(--grad);color:var(--ink2);box-shadow:0 10px 24px rgba(231,146,154,.28)}
@media(max-width:760px){nav .links a:not(.btn){display:none}}

.dochead{position:relative;overflow:hidden;padding:44px 0 34px}
.dochead:before{content:"";position:absolute;inset:-20% -10% 0;background:radial-gradient(45% 60% at 90% 0%,rgba(255,206,158,.5),transparent 65%),radial-gradient(40% 50% at 0% 10%,rgba(231,146,154,.22),transparent 65%);pointer-events:none}
.dochead .wrap{position:relative}
.crumb{font-size:13px;font-weight:700;color:var(--muted);display:flex;gap:8px;letter-spacing:.2px}
.crumb a:hover{color:var(--ink)}
h1{font-size:clamp(40px,7.4vw,76px);line-height:.98;letter-spacing:-.045em;font-weight:900;margin:18px 0 22px}
.meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.pill{font-size:13px;font-weight:700;color:var(--soft);background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 13px}
.print{font:inherit;font-size:13px;font-weight:700;color:var(--soft);background:transparent;border:1px dashed #dccfc2;border-radius:999px;padding:7px 13px;display:inline-flex;align-items:center;gap:7px;cursor:pointer}
.print svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2}
.print:hover{color:var(--ink);border-color:var(--muted)}
.langs{margin-top:18px;display:flex;flex-wrap:wrap;gap:6px;font-size:13px;font-weight:600}
.langs a,.langs span{padding:6px 11px;border-radius:999px;color:var(--muted)}
.langs a:hover{color:var(--ink);background:rgba(255,255,255,.7)}
.langs .on{background:var(--ink2);color:#F7F0E7}

.docgrid{display:grid;grid-template-columns:1fr;gap:18px;padding-bottom:40px}
@media(min-width:960px){.docgrid{grid-template-columns:260px minmax(0,1fr);gap:56px;align-items:start}}
.toc{position:relative}
@media(min-width:960px){.toc{position:sticky;top:88px;max-height:calc(100vh - 110px);overflow:auto}}
.toc details{background:#fff;border:1px solid var(--line);border-radius:20px;padding:6px 8px;box-shadow:var(--shadow)}
.toc summary{list-style:none;cursor:pointer;font-size:12px;font-weight:800;letter-spacing:1.8px;text-transform:uppercase;color:var(--muted);padding:12px 12px;display:flex;justify-content:space-between}
.toc summary::-webkit-details-marker{display:none}
.toc summary:after{content:"+";font-size:18px;color:var(--rose);line-height:1}
.toc details[open] summary:after{content:"−"}
.toc ol{list-style:none;padding:2px 4px 10px}
.toc a{display:block;padding:7px 10px;border-radius:10px;font-size:13.5px;font-weight:600;color:var(--soft);line-height:1.35}
.toc a:hover{background:var(--bg);color:var(--ink)}
.toc a.on{background:linear-gradient(92deg,#FFF1E3,#FBE4E6);color:var(--ink)}

.doc{background:#fff;border:1px solid var(--line);border-radius:28px;padding:22px 18px 30px;box-shadow:var(--shadow);min-width:0}
@media(min-width:760px){.doc{padding:56px 64px}}
.doc p,.doc li{font-size:16.5px;line-height:1.72;color:var(--soft)}
.doc p{margin:0 0 16px}
.doc strong{color:var(--ink);font-weight:700}
.doc a{color:var(--forest);text-decoration:underline;text-decoration-color:rgba(30,70,56,.3);text-underline-offset:3px;word-break:break-word}
.doc h2{font-size:clamp(22px,2.6vw,28px);font-weight:900;letter-spacing:-.03em;line-height:1.2;margin:48px 0 16px;padding-top:28px;border-top:1px solid var(--line);display:flex;gap:14px;align-items:baseline;position:relative}
.doc h2 .num{flex:none;font-size:14px;font-weight:800;color:#B85C66;background:linear-gradient(135deg,#FFE7D1,#F9D6DA);border-radius:10px;padding:5px 9px;letter-spacing:0;transform:translateY(-3px)}
.doc h2 .anc{margin-left:auto;font-size:16px;color:#d8c9bb;text-decoration:none;opacity:0;transition:opacity .2s}
.doc h2:hover .anc{opacity:1}
.doc h3{font-size:19px;font-weight:800;letter-spacing:-.02em;margin:34px 0 12px;color:var(--ink)}
.doc ul{list-style:none;margin:0 0 20px;display:grid;gap:10px}
.doc li{position:relative;padding-left:22px}
.doc li:before{content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--grad)}
.tldr{background:var(--forestsoft);border-radius:20px;padding:20px 20px 6px;margin-bottom:6px}
.tldr .tl-k{font-size:12px;font-weight:800;letter-spacing:1.8px;text-transform:uppercase;color:#4d6a5d;margin-bottom:10px}
.tldr p{color:#23352d;font-size:16.5px}
@media(max-width:600px){.doc p,.doc li{font-size:16px;line-height:1.66}.en{padding:18px 16px 4px}}
.en{background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:22px 22px 6px;margin:0 0 20px}
.warn{display:flex;gap:14px;background:#FCEFE7;border:1px solid #F4D9C8;border-radius:18px;padding:18px 20px;margin:0 0 18px}
.warn svg{width:22px;height:22px;flex:none;fill:none;stroke:#A2552C;stroke-width:2.2;stroke-linejoin:round;stroke-linecap:round;margin-top:3px}
.warn p{margin:0;color:#6b3a20}
.warn strong{color:#5a2d15}

.tw{margin:8px 0 22px;border:1px solid var(--line);border-radius:18px;overflow:hidden}
table{width:100%;border-collapse:collapse;font-size:14.5px}
th{text-align:left;font-size:11.5px;font-weight:800;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted);background:var(--bg2);padding:13px 16px}
td{padding:14px 16px;border-top:1px solid var(--line);vertical-align:top;color:var(--soft);line-height:1.55}
td strong{color:var(--ink)}
tbody tr:hover td{background:#fffaf5}
@media(max-width:700px){
  .tw{border:0;border-radius:0;overflow:visible}
  table,thead,tbody,tr,td{display:block}
  thead{display:none}
  tr{background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:6px 16px;margin-bottom:10px}
  td{border:0;padding:8px 0;border-top:1px dashed var(--line)}
  td:first-child{border-top:0;font-weight:700;color:var(--ink)}
  td:before{content:attr(data-l);display:block;font-size:11px;font-weight:800;letter-spacing:1.1px;text-transform:uppercase;color:var(--muted);margin-bottom:3px}
}
.endnote{margin-top:40px;padding-top:22px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.related{display:grid;gap:10px;margin-top:24px}
@media(min-width:640px){.related{grid-template-columns:1fr 1fr}}
.rel{display:flex;align-items:center;gap:12px;background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:16px 18px;text-decoration:none!important;transition:transform .2s}
.rel:hover{transform:translateY(-2px)}
.rel .k{font-size:11px;font-weight:800;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted)}
.rel .t{font-weight:800;color:var(--ink);font-size:15.5px}
.rel .ar{margin-left:auto;color:var(--rose);font-weight:800}

footer{padding:48px 0 56px;color:var(--muted);font-size:14.5px}
.fgrid{display:grid;gap:32px;border-top:1px solid var(--line);padding-top:40px}
.fcol h4{font-size:12px;font-weight:800;letter-spacing:1.8px;text-transform:uppercase;color:var(--ink);margin-bottom:14px}
.fcol a{display:block;margin-bottom:10px;color:var(--soft)}
.cosm{margin-top:12px;max-width:44ch;font-size:13px;line-height:1.55}
.fbottom{margin-top:36px;font-size:13px;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
@media(min-width:760px){.fgrid{grid-template-columns:1.6fr 1fr 1fr 1fr}}

@media print{
  nav,.toc,footer,.print,.langs,.related,.anc{display:none!important}
  body{background:#fff}.dochead{padding:0 0 10px}.dochead:before{display:none}
  .doc{border:0;box-shadow:none;padding:0}.docgrid{display:block}
  .doc p,.doc li{font-size:11pt;color:#000}h1{font-size:30pt}
  .doc h2{break-after:avoid}tr{break-inside:avoid}
}
.tnote{margin-top:14px;font-size:13.5px;color:var(--muted);max-width:60ch}