:root{
  --bg:#ffffff;
  --text:#1c1c1e;
  --muted:#5a5a5f;
  --border:#e4e4e7;
  --surface:#f6f7f8;
  --green:#3d9140;        /* darkened #4CAF50 for WCAG AA on white */
  --green-bg:#eef6ee;
  --gate:#fff7e6;
  --gate-border:#e0b252;
  --gate-text:#8a6400;
  --maxw:760px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  padding:0 20px 40px;
}
.wrap{max-width:var(--maxw);margin:0 auto;}

/* header */
header.site{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  padding:24px 0 20px;
  border-bottom:1px solid var(--border);
  margin-bottom:28px;
}
.brand{display:flex;align-items:center;gap:11px;}
.brand img{width:38px;height:38px;border-radius:9px;display:block;}
.brand .name{font-size:18px;font-weight:700;letter-spacing:-0.3px;}
.lang{font-size:13px;}
.lang a{color:var(--green);text-decoration:none;font-weight:600;}
.lang a:hover{text-decoration:underline;}
.lang .current{color:var(--muted);font-weight:400;}

/* title */
h1{font-size:27px;font-weight:700;letter-spacing:-0.5px;margin-bottom:8px;}
.updated{font-size:14px;color:var(--muted);margin-bottom:28px;}
.updated strong{color:var(--text);font-weight:600;}

/* draft / gate banner */
.banner{
  background:var(--gate);border:1px solid var(--gate-border);
  border-radius:8px;padding:12px 15px;margin-bottom:28px;
  font-size:13.5px;color:var(--gate-text);line-height:1.5;
}
.banner strong{color:#6b4e00;}

/* toc */
nav.toc{
  background:var(--surface);border:1px solid var(--border);
  border-radius:10px;padding:18px 20px;margin-bottom:40px;
}
nav.toc h2{
  font-size:12px;text-transform:uppercase;letter-spacing:0.06em;
  color:var(--muted);font-weight:600;margin-bottom:12px;
}
nav.toc ol{list-style:none;counter-reset:toc;display:grid;gap:8px;}
nav.toc li{counter-increment:toc;font-size:15px;}
nav.toc li::before{content:counter(toc) ". ";color:var(--green);font-weight:600;}
nav.toc a{color:var(--text);text-decoration:none;}
nav.toc a:hover{color:var(--green);text-decoration:underline;}

/* sections */
section{margin-bottom:34px;scroll-margin-top:20px;}
section h2.sec{font-size:20px;font-weight:700;letter-spacing:-0.3px;margin-bottom:14px;padding-top:6px;}
section h2.sec .num{color:var(--green);margin-right:8px;}
p{margin-bottom:14px;}
ul,ol.body{margin:0 0 14px 22px;}
li{margin-bottom:7px;}
h3{font-size:16px;font-weight:600;margin:18px 0 10px;}
blockquote{
  border-left:3px solid var(--gate-border);
  background:var(--gate);
  color:var(--gate-text);
  padding:10px 14px;margin:0 0 16px;border-radius:0 6px 6px 0;
  font-size:13.5px;line-height:1.5;
}

/* tables */
.tablewrap{overflow-x:auto;margin-bottom:16px;}
table{width:100%;border-collapse:collapse;font-size:14.5px;border:1px solid var(--border);border-radius:8px;overflow:hidden;}
th,td{text-align:left;padding:10px 13px;border-bottom:1px solid var(--border);vertical-align:top;}
th{background:var(--surface);font-weight:600;font-size:13px;}
tr:last-child td{border-bottom:none;}

/* contact */
.contact{background:var(--green-bg);border:1px solid #d6e8d6;border-radius:10px;padding:20px 22px;margin-top:8px;}
.contact h2{font-size:17px;font-weight:700;margin-bottom:12px;}
.contact p{margin-bottom:5px;font-size:15px;}
.contact a{color:var(--green);text-decoration:none;font-weight:600;}

/* placeholder inline */
.ph{background:var(--gate);border:1px dashed var(--gate-border);border-radius:5px;padding:1px 6px;font-size:0.92em;color:var(--gate-text);}

.totop{display:inline-block;margin-top:10px;font-size:13px;color:var(--green);text-decoration:none;}
.totop:hover{text-decoration:underline;}

/* footer with legal links */
footer.site{
  border-top:1px solid var(--border);
  margin-top:48px;padding-top:22px;
  font-size:13px;color:var(--muted);
  display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;
}
footer.site .links{display:flex;gap:18px;flex-wrap:wrap;justify-content:center;}
footer.site .links a{color:var(--green);text-decoration:none;font-weight:600;}
footer.site .links a:hover{text-decoration:underline;}
footer.site .links a.active{color:var(--muted);font-weight:400;cursor:default;}
footer.site .copy{color:#8a8a8e;}

@media (max-width:560px){
  h1{font-size:23px;}
  section h2.sec{font-size:18px;}
  body{padding:0 16px 40px;}
}