:root{
  --bg:#0f172a; --bg-2:#0b1120; --surface:#172033; --surface-2:#1e293b;
  --border:rgba(148,163,184,.14); --border-strong:rgba(148,163,184,.26);
  --teal:#14b8a6; --teal-bright:#2dd4bf; --teal-soft:rgba(20,184,166,.12);
  --text:#f1f5f9; --muted:#94a3b8; --muted-2:#64748b; --maxw:820px;
}
:root[data-theme="light"]{
  --bg:#f3f6fb; --bg-2:#e9eef5; --surface:#fff; --surface-2:#fff;
  --border:rgba(15,23,42,.10); --border-strong:rgba(15,23,42,.16);
  --teal-soft:rgba(20,184,166,.13); --text:#0f172a; --muted:#52617a; --muted-2:#8a97ab;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'DM Sans',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased;transition:background-color .45s ease,color .45s ease}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:'Bricolage Grotesque',sans-serif;letter-spacing:-.02em;line-height:1.1}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* nav */
.lnav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(14px) saturate(140%);border-bottom:1px solid var(--border)}
.lnav-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.logo{display:flex;align-items:center;gap:11px}
.logo-chip{display:grid;place-items:center;background:#fff;border-radius:9px;padding:5px 8px;flex:none;border:1px solid rgba(15,23,42,.08);box-shadow:0 1px 3px rgba(15,23,42,.12)}
.logo-chip img{height:26px;width:auto;display:block}
.logo-txt{display:flex;flex-direction:column;line-height:1.05}
.logo-main{font-family:'Bricolage Grotesque';font-weight:700;font-size:18px}
.logo-main b{color:var(--teal-bright)}
:root[data-theme="light"] .logo-main b{color:#0d9488}
.logo-sub{font-size:11px;color:var(--muted-2);letter-spacing:.04em;text-transform:uppercase}
.lnav-actions{display:flex;align-items:center;gap:12px}
.theme-toggle{width:40px;height:40px;border-radius:10px;flex:none;cursor:pointer;border:1px solid var(--border-strong);background:var(--surface-2);color:var(--text);display:grid;place-items:center;transition:.2s}
.theme-toggle:hover{border-color:rgba(45,212,191,.45);color:var(--teal);transform:translateY(-1px)}
.theme-toggle svg{width:18px;height:18px}
.theme-toggle .ic-moon{display:none}.theme-toggle .ic-sun{display:block}
:root[data-theme="light"] .theme-toggle .ic-sun{display:none}
:root[data-theme="light"] .theme-toggle .ic-moon{display:block}
.back-link{font-size:14px;font-weight:600;color:#06231f;background:var(--teal);padding:10px 16px;border-radius:9px;transition:.2s;white-space:nowrap}
.back-link:hover{background:var(--teal-bright);transform:translateY(-1px)}

/* document */
.doc{padding:60px 0 90px}
.doc-eyebrow{font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--teal);margin-bottom:14px}
.doc h1{font-size:clamp(32px,5vw,46px);font-weight:700;margin-bottom:12px}
.doc .updated{font-size:14px;color:var(--muted-2);margin-bottom:44px}
.doc h2{font-size:22px;font-weight:700;margin:42px 0 14px;padding-top:24px;border-top:1px solid var(--border)}
.doc h2:first-of-type{border-top:none;padding-top:0}
.doc h3{font-size:17px;font-weight:600;font-family:'DM Sans';margin:22px 0 8px}
.doc p{font-size:16px;color:var(--muted);margin-bottom:14px;text-wrap:pretty}
.doc strong{color:var(--text);font-weight:600}
.doc a{color:var(--teal);text-decoration:underline;text-underline-offset:2px}
:root[data-theme="light"] .doc a{color:#0d9488}
.doc ul{margin:0 0 16px 0;padding-left:22px;display:flex;flex-direction:column;gap:8px}
.doc li{font-size:16px;color:var(--muted)}
.doc li::marker{color:var(--teal)}
.callout{background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--teal);border-radius:12px;padding:18px 22px;margin:22px 0;font-size:15px;color:var(--muted)}
.callout b{color:var(--text)}
.todo{background:rgba(245,158,11,.10);border:1px dashed rgba(245,158,11,.45);border-radius:8px;padding:2px 7px;color:#d97706;font-weight:600;font-size:.92em}
:root[data-theme="light"] .todo{color:#b45309}
.infogrid{display:grid;grid-template-columns:auto 1fr;gap:10px 26px;margin:8px 0 18px;font-size:15.5px}
.infogrid dt{color:var(--muted-2);font-weight:500}
.infogrid dd{color:var(--text);font-weight:600}

/* footer */
.lfoot{border-top:1px solid var(--border);background:var(--bg-2);padding:36px 0}
.lfoot-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;font-size:13.5px;color:var(--muted-2)}
.lfoot-links{display:flex;gap:22px;flex-wrap:wrap}
.lfoot-links a{transition:color .2s}
.lfoot-links a:hover{color:var(--teal-bright)}
@media(max-width:560px){
  .wrap{padding:0 20px}
  .logo-sub{display:none}
  .lnav-inner{height:62px}
  .logo-main{font-size:16px}
  .logo-chip img{height:22px}
  .back-link{padding:9px 13px;font-size:13px}
  .doc h1{font-size:30px}
}