@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Manrope:wght@400;500;600;650;700;750;800&display=swap');

:root{
 --bg:#fcfaf7;--surface:#ffffff;--surface-2:#f6f2ec;--ink:#272626;--muted:#797674;
 --coral:#ef6957;--coral-ink:#c8432f;--line:#e9e4de;--soft:#f3efe9;
 --sans:'DM Sans',system-ui,sans-serif;--display:'Manrope',system-ui,sans-serif;--radius:18px;
}
:root:not([data-theme="light"]) { }
@media(prefers-color-scheme:dark){
 :root:not([data-theme="light"]){
  --bg:#161615;--surface:#1f1e1d;--surface-2:#242321;--ink:#e7e5e1;--muted:#a49d95;
  --coral:#ef6957;--coral-ink:#ff8a76;--line:#38342f;--soft:#232221;
 }
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.72;-webkit-font-smoothing:antialiased;-webkit-text-size-adjust:100%}
a{color:var(--coral-ink);text-decoration:none}
a:hover{text-decoration:underline}

/* top bar */
.topbar{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:saturate(1.3) blur(10px);border-bottom:1px solid var(--line)}
.topbar-in{max-width:1060px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{width:32px;height:32px;display:block}
.brand b{font-family:var(--display);font-weight:800;font-size:21px;letter-spacing:-.6px}
.brand b i{color:var(--coral);font-style:normal}
.back{font-size:14px;font-weight:600;color:var(--muted);display:inline-flex;align-items:center;gap:6px}
.back:hover{color:var(--coral-ink);text-decoration:none}

/* hero */
.hero{max-width:1060px;margin:0 auto;padding:56px 24px 30px}
.eyebrow{font-family:var(--display);font-weight:700;font-size:12px;letter-spacing:2.4px;text-transform:uppercase;color:var(--coral-ink);margin:0 0 14px}
.hero h1{font-family:var(--display);font-weight:800;font-size:clamp(32px,6vw,46px);line-height:1.08;letter-spacing:-1.4px;margin:0 0 14px}
.updated{color:var(--muted);font-size:14px;margin:0}
.lead{font-size:18px;line-height:1.65;color:var(--ink);max-width:62ch;margin:20px 0 0}

/* layout: table of contents + article */
.wrap{max-width:1060px;margin:0 auto;padding:18px 24px 90px;display:grid;grid-template-columns:230px minmax(0,1fr);gap:48px;align-items:start}
.toc{position:sticky;top:84px;font-size:14px}
.toc strong{display:block;font-family:var(--display);font-size:12px;letter-spacing:1.6px;text-transform:uppercase;color:var(--muted);margin:0 0 12px}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:toc}
.toc li{counter-increment:toc;margin:0}
.toc a{display:flex;gap:9px;padding:7px 10px;border-radius:9px;color:var(--muted);line-height:1.4}
.toc a::before{content:counter(toc,decimal-leading-zero);font-variant-numeric:tabular-nums;color:var(--coral);font-weight:650;font-size:12px;padding-top:1px}
.toc a:hover{background:var(--soft);color:var(--ink);text-decoration:none}

article{min-width:0}
.note{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--coral);border-radius:12px;padding:16px 18px;margin:0 0 30px;font-size:15px;color:var(--muted)}
.warn{background:color-mix(in srgb,var(--coral) 10%,var(--surface));border:1px solid color-mix(in srgb,var(--coral) 35%,var(--line));border-left:4px solid var(--coral);border-radius:12px;padding:18px 20px;margin:0 0 30px}
.warn strong{font-family:var(--display);font-weight:750;color:var(--coral-ink);display:block;margin-bottom:6px;font-size:16px}
.warn p{margin:0;color:var(--ink);font-size:15px}
section{padding:14px 0;border-top:1px solid var(--line);scroll-margin-top:88px}
section:first-of-type{border-top:0}
section h2{font-family:var(--display);font-weight:750;font-size:21px;letter-spacing:-.5px;margin:10px 0 10px;display:flex;align-items:baseline;gap:12px}
section h2 .n{font-size:14px;font-weight:700;color:var(--coral);font-variant-numeric:tabular-nums;min-width:26px}
p,li{color:var(--ink)}
p{margin:12px 0}
ul{padding-left:20px;margin:12px 0}
li{margin:7px 0}
strong{font-weight:650}

/* data table */
.table-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;margin:16px 0}
table{border-collapse:collapse;width:100%;font-size:14.5px}
th,td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
th{background:var(--surface-2);font-family:var(--display);font-weight:650;color:var(--ink)}
tr:last-child td{border-bottom:0}
td:first-child{font-weight:600;white-space:nowrap}
@media(max-width:600px){td:first-child{white-space:normal}}

/* contact */
.contact{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 22px;margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}
.contact p{margin:0;color:var(--muted);font-size:15px}
.contact a{font-family:var(--display);font-weight:700;font-size:16px}

/* footer */
footer{border-top:1px solid var(--line);background:var(--surface)}
.foot{max-width:1060px;margin:0 auto;padding:26px 24px;display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center;color:var(--muted);font-size:13px}
.foot .sp{flex:1}
.foot a{color:var(--muted);font-weight:550}

@media(max-width:860px){
 .wrap{grid-template-columns:1fr;gap:8px;padding-top:4px}
 .toc{display:none}
 .hero{padding-top:40px}
}