:root{
  --bg:#f6f7f9; --surface:#ffffff; --ink:#14181f; --muted:#5a6472; --line:#e3e7ee;
  --accent:#1f5f8b; --accent-2:#2a86c4; --accent-ink:#ffffff; --soft:#eaf2f8;
  --hero-a:#e9f3fb; --hero-b:#f6f7f9; --shadow:0 1px 2px rgba(16,24,40,.05),0 8px 24px rgba(16,24,40,.06);
  --maxw:48rem; --radius:14px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#0e1116; --surface:#161b22; --ink:#e8ecf2; --muted:#9aa5b4; --line:#262d38;
         --accent:#7fb6dd; --accent-2:#5aa2d6; --accent-ink:#0b1620; --soft:#16212c;
         --hero-a:#13222f; --hero-b:#0e1116; --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35); }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:var(--accent);text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
a:focus-visible,.btn:focus-visible{outline:3px solid var(--accent-2);outline-offset:3px;border-radius:6px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

header.site{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--surface) 88%,transparent);
  -webkit-backdrop-filter:saturate(1.4) blur(10px);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:.5rem 1.2rem;min-height:62px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px}
.brand{font-weight:700;letter-spacing:.01em;text-decoration:none;color:var(--ink);display:flex;align-items:center;gap:.6rem}
.brand svg{width:30px;height:30px;flex:none;color:var(--accent)}
nav.top{display:flex;gap:.2rem;flex-wrap:wrap;font-size:.95rem;align-items:center}
nav.top a{color:var(--muted);text-decoration:none;padding:.35rem .7rem;border-radius:999px}
nav.top a:hover{color:var(--ink);background:var(--soft)}
nav.top a[aria-current=page]{color:var(--ink);background:var(--soft);font-weight:600}
nav.top a.lang{border:1px solid var(--line);margin-left:.3rem}

main{padding:2.2rem 0 3.5rem}
h1{font-size:2.1rem;line-height:1.2;margin:0 0 .6rem;letter-spacing:-.02em}
h2{font-size:1.3rem;margin:2.4rem 0 .7rem;letter-spacing:-.01em}
h3{font-size:1.05rem;margin:1.5rem 0 .4rem}
p{margin:.7rem 0}
.lead{font-size:1.2rem;color:var(--muted);margin:0 0 1.5rem}
.updated{color:var(--muted);font-size:.9rem;margin:.2rem 0 1.8rem}

.hero{background:linear-gradient(160deg,var(--hero-a),var(--hero-b));border:1px solid var(--line);
  border-radius:22px;padding:3rem 1.6rem 2.6rem;margin:0 0 1rem;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,var(--accent-2),transparent 70%);opacity:.18;pointer-events:none}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:var(--accent);background:var(--surface);border:1px solid var(--line);padding:.25rem .7rem;border-radius:999px;margin-bottom:1rem}
.hero h1{font-size:clamp(2rem,6vw,3rem);line-height:1.1;max-width:18ch}
.hero .lead{max-width:34rem;margin-bottom:1.6rem}
.actions{display:flex;gap:.7rem;flex-wrap:wrap}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);padding:.7rem 1.15rem;border-radius:10px;
  text-decoration:none;font-weight:600;box-shadow:var(--shadow)}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line);box-shadow:none}
.btn.ghost:hover{background:var(--soft)}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.15rem 1.3rem;margin:1rem 0;box-shadow:var(--shadow)}
.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));margin:1rem 0}
.grid .card{margin:0}
.card h3{margin:.2rem 0 .3rem}
.card p{color:var(--muted);margin:.3rem 0 0}
.ico{width:42px;height:42px;border-radius:11px;background:var(--soft);color:var(--accent);display:grid;place-items:center;margin-bottom:.6rem}
.ico svg{width:22px;height:22px}
.soon{border-style:dashed;box-shadow:none;text-align:center;padding:1.6rem 1.3rem}
.soon p{max-width:30rem;margin:.4rem auto 0}

dl.data{display:grid;grid-template-columns:max-content 1fr;gap:.45rem 1.2rem;margin:0}
dl.data dt{color:var(--muted)}
dl.data dd{margin:0;overflow-wrap:anywhere}
@media (max-width:540px){dl.data{grid-template-columns:1fr;gap:.1rem}dl.data dd{margin-bottom:.7rem}}

.note{background:var(--soft);border-radius:var(--radius);padding:.9rem 1.2rem;border:1px solid var(--line)}
.note p{margin:.2rem 0}
table{border-collapse:collapse;width:100%;font-size:.93rem;margin:1rem 0;background:var(--surface)}
th,td{border:1px solid var(--line);padding:.55rem .7rem;text-align:left;vertical-align:top}
th{background:var(--soft)}
.tablewrap{overflow-x:auto;border-radius:10px}
ul,ol{padding-left:1.3rem}
li{margin:.3rem 0}

footer.site{border-top:1px solid var(--line);background:var(--surface);color:var(--muted);font-size:.88rem;padding:1.8rem 0 2.5rem}
footer.site nav{display:flex;flex-wrap:wrap;gap:.4rem 1.2rem;margin-bottom:.9rem}
footer.site a{color:var(--muted)}
footer.site a:hover{color:var(--ink)}
footer.site p{color:var(--muted);margin:.25rem 0}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{header.site,footer.site nav{display:none}body{background:#fff;color:#000}.card{box-shadow:none}}