:root{
  --bg:#ffffff;--bg2:#f5f7fa;--fg:#0f172a;--muted:#55627a;--line:#e3e8ef;
  --accent:#0e7490;--accent2:#22d3ee;--card:#ffffff;--code:#0f172a;--codefg:#d6e4f0;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0b1020;--bg2:#101730;--fg:#e8edf6;--muted:#9aa7bd;--line:#223052;
    --accent:#22d3ee;--accent2:#67e8f9;--card:#121a33;--code:#060a16;--codefg:#c9d6e6;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Inter,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
header{position:sticky;top:0;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:10}
nav{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--fg);letter-spacing:.2px}
.logo svg{width:28px;height:28px}
nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0}
nav ul a{color:var(--muted);font-size:15px}
nav ul a:hover{color:var(--fg);text-decoration:none}
@media (max-width:640px){nav ul{display:none}}
.btn{display:inline-block;padding:11px 18px;border-radius:8px;font-weight:600;border:1px solid var(--accent);color:var(--accent)}
.btn.primary{background:var(--accent);color:#fff}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn.primary{color:#06202a}}
.btn:hover{text-decoration:none;filter:brightness(1.08)}
.hero{padding:84px 0 56px}
.hero .kicker{color:var(--accent);font-weight:600;text-transform:uppercase;letter-spacing:.08em;font-size:13px}
.hero h1{font-size:clamp(32px,5vw,52px);line-height:1.1;margin:12px 0 18px;letter-spacing:-.02em}
.hero p.lead{font-size:19px;color:var(--muted);max-width:720px;margin:0 0 28px}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin:48px 0 0}
.stat{border:1px solid var(--line);border-radius:12px;padding:18px;background:var(--card)}
.stat b{display:block;font-size:30px;letter-spacing:-.02em;line-height:1.1}
.stat span{color:var(--muted);font-size:14px}
section{padding:64px 0;border-top:1px solid var(--line)}
section.alt{background:var(--bg2)}
h2{font-size:clamp(26px,3.4vw,34px);letter-spacing:-.02em;margin:0 0 10px}
.sub{color:var(--muted);max-width:720px;margin:0 0 36px;font-size:17px}
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card{border:1px solid var(--line);border-radius:14px;padding:24px;background:var(--card)}
.card h3{margin:0 0 8px;font-size:19px}
.card .tag{display:inline-block;font-size:12px;font-weight:600;color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,transparent);padding:3px 9px;border-radius:999px;margin-bottom:12px}
.card p{margin:0;color:var(--muted)}
.card ul{margin:10px 0 0;padding-left:18px;color:var(--muted)}
.card li{margin:4px 0}
.steps{counter-reset:s;display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.step{position:relative;border-left:3px solid var(--accent);padding:4px 0 4px 18px}
.step::before{counter-increment:s;content:counter(s);position:absolute;left:-15px;top:0;width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .step::before{color:#06202a}}
.step b{display:block;margin-bottom:4px}
.step span{color:var(--muted);font-size:15px}
pre{background:var(--code);color:var(--codefg);border-radius:12px;padding:18px 20px;overflow:auto;font:13.5px/1.55 ui-monospace,SFMono-Regular,Consolas,monospace;margin:0}
pre .c{color:#7c8ba1}pre .k{color:#67e8f9}pre .g{color:#86efac}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}
th{color:var(--muted);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.05em}
td.num{text-align:right;font-variant-numeric:tabular-nums}
.note{font-size:14px;color:var(--muted);border-left:3px solid var(--line);padding-left:14px;margin-top:22px}
.team{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.person{display:flex;gap:16px;align-items:flex-start}
.avatar{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));flex:none;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:20px}
.person b{display:block}
.person span{color:var(--muted);font-size:15px}
footer{padding:36px 0;color:var(--muted);font-size:14px;border-top:1px solid var(--line)}
footer .row{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* sub-pages */
.page{padding:56px 0 72px;max-width:760px}
.page h1{font-size:clamp(30px,4vw,42px);letter-spacing:-.02em;margin:0 0 8px}
.page .meta{color:var(--muted);margin:0 0 32px}
.page h2{font-size:22px;margin:36px 0 8px}
.page p,.page li{color:var(--fg)}
.page ul{padding-left:20px}
.facts{display:grid;grid-template-columns:max-content 1fr;gap:8px 24px;margin:0 0 8px}
.facts dt{color:var(--muted)}
.facts dd{margin:0}
@media (max-width:520px){.facts{grid-template-columns:1fr}.facts dt{margin-top:8px}}
footer nav.flinks{display:flex;gap:16px;flex-wrap:wrap;height:auto}
footer nav.flinks a{color:var(--muted)}

/* prevent horizontal overflow on narrow screens */
html,body{overflow-x:hidden}
.grid>*,.stats>*,.steps>*,.team>*{min-width:0}
pre{max-width:100%}
.hero h1{overflow-wrap:anywhere}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -20px;padding:0 20px}
@media (max-width:560px){.tablewrap table{font-size:13px}.tablewrap th,.tablewrap td{padding:8px 6px}.tablewrap th:nth-child(3),.tablewrap td:nth-child(3){display:none}}