/* octo-si-site v1 · OCTO's own product palette (OCTO-D: #0A0E14, #00D68F, #4DA3FF), dark first, light on request.
   GrnBit's estate palette is for GrnBit documents; this is an OCTO product page. No external fonts, no scripts. */
:root{
  --bg:#0A0E14; --surface:#111823; --surface-2:#16202E; --ink:#E6EDF3; --ink-2:#A9B6C6; --rule:#243244;
  --accent:#00D68F; --accent-ink:#00D68F; --blue:#4DA3FF; --amber:#F2B84B; --on-accent:#04150E;
  --max:1080px; --measure:64ch; color-scheme:dark;
}
@media (prefers-color-scheme: light){:root:not([data-theme="dark"]){
  --bg:#F6F8FA; --surface:#FFFFFF; --surface-2:#EEF2F6; --ink:#0A0E14; --ink-2:#3F4C5C; --rule:#D5DCE4;
  --accent:#007A51; --accent-ink:#006B47; --blue:#1F5FA8; --amber:#8A5A00; --on-accent:#FFFFFF;
  color-scheme:light;}}
:root[data-theme="light"]{
  --bg:#F6F8FA; --surface:#FFFFFF; --surface-2:#EEF2F6; --ink:#0A0E14; --ink-2:#3F4C5C; --rule:#D5DCE4;
  --accent:#007A51; --accent-ink:#006B47; --blue:#1F5FA8; --amber:#8A5A00; --on-accent:#FFFFFF;
  color-scheme:light;}
*{box-sizing:border-box}
html{scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent-ink);text-decoration:none}
p a,.rung a,.legal a,footer a{text-decoration:underline;text-underline-offset:2px}
a:hover,a:focus-visible{text-decoration:underline}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.skip{position:absolute;left:-9999px;top:8px;background:var(--surface);color:var(--ink);padding:8px 12px;z-index:10}
.skip:focus{left:16px}
.wrap{max-width:var(--max);margin:0 auto;padding-inline:24px}
@media (max-width:560px){.wrap{padding-inline:16px}}
h1,h2,h3{margin:0;text-wrap:balance;letter-spacing:-0.01em;line-height:1.15}
p{margin:0}
.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;color:var(--accent-ink)}

header{background:var(--bg);border-bottom:1px solid var(--rule);position:sticky;top:0;z-index:5}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-block:12px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:19px;letter-spacing:.02em;white-space:nowrap}
.brand img{width:32px;height:32px;display:block}
.brand small{font-weight:400;font-size:12px;color:var(--ink-2);letter-spacing:.06em}
nav{display:flex;gap:20px;align-items:center}
nav a{color:var(--ink);font-size:13px;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap;padding-block:6px}
nav .lang{border:1px solid var(--rule);padding:4px 10px;letter-spacing:.08em}
@media (max-width:820px){nav .wide{display:none}}
@media (max-width:420px){.brand small{display:none}}

.hero{padding-block:72px 56px;display:flex;flex-direction:column;gap:20px;align-items:flex-start}
.hero h1{font-size:clamp(34px,6vw,64px);max-width:18ch}
.hero .lede{font-size:clamp(18px,2.1vw,21px);line-height:1.5;max-width:var(--measure)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}
.cta{display:inline-block;background:var(--accent);color:var(--on-accent);padding:12px 22px;font-weight:700;font-size:15px}
.cta:hover{text-decoration:none;filter:brightness(1.07)}
.ghost{display:inline-block;border:1px solid var(--rule);color:var(--ink);padding:11px 20px;font-size:15px}

section{padding-block:64px;border-top:1px solid var(--rule)}
section h2{font-size:clamp(26px,3.2vw,36px);margin-top:12px;max-width:26ch}
.intro{margin-top:14px;color:var(--ink-2);max-width:var(--measure)}
.rung{font-size:15px;color:var(--ink);border-left:3px solid var(--amber);padding:2px 0 2px 12px;line-height:1.5;max-width:var(--measure)}
.hero .rung{margin-top:4px}

.cards{list-style:none;padding:0;margin:32px 0 0;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media (max-width:720px){.cards{grid-template-columns:1fr}}
.cards li{background:var(--surface);border:1px solid var(--rule);border-top:3px solid var(--accent);padding:20px 22px}
.cards h3{font-size:19px}
.cards p{margin-top:8px;color:var(--ink-2);font-size:16px}

.rules{list-style:none;padding:0;margin:28px 0 0;counter-reset:r;display:flex;flex-direction:column}
.rules li{display:grid;grid-template-columns:44px 1fr;gap:12px;padding-block:16px;border-top:1px solid var(--rule)}
.rules li::before{counter-increment:r;content:counter(r);font-weight:800;color:var(--accent-ink);font-size:22px;line-height:1.2}
.rules b{display:block;font-size:17px}
.rules span{color:var(--ink-2);font-size:16px}

.evidence{margin-top:28px;background:var(--surface);border:1px solid var(--rule);border-left:4px solid var(--amber);padding:20px 24px;font-size:18px;line-height:1.55;max-width:72ch}
.evidence p+p{margin-top:10px}
.evidence .src{font-size:13px;color:var(--ink-2)}
.rows{margin-top:28px;display:flex;flex-direction:column}
.row{display:grid;grid-template-columns:120px 200px 1fr;gap:20px;padding-block:16px;border-top:1px solid var(--rule);align-items:baseline}
.row .what{font-weight:700;font-size:16px}
.row p{color:var(--ink-2);font-size:16px;max-width:var(--measure)}
@media (max-width:680px){.row{grid-template-columns:1fr;gap:6px}}
.label{display:inline-block;justify-self:start;font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;padding:3px 8px;border:1px solid currentColor;white-space:nowrap}
.l-now{color:var(--accent-ink)} .l-next{color:var(--amber)} .l-later{color:var(--ink-2)} .l-sim{color:var(--blue)}

.family{list-style:none;padding:0;margin:32px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:900px){.family{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.family{grid-template-columns:1fr}}
.family li{background:var(--surface);border:1px solid var(--rule);padding:18px 20px;display:flex;flex-direction:column;gap:8px}
.family li.core{border-color:var(--accent)}
.family .label{align-self:flex-start}
.family h3{font-size:18px}
.family p{color:var(--ink-2);font-size:15.5px}
.family .home{grid-column:1/-1;background:var(--surface-2)}

.split{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;margin-top:24px;align-items:start}
@media (max-width:860px){.split{grid-template-columns:1fr}}
.split .body p{color:var(--ink-2)} .split .body p+p{margin-top:14px}
.contact{display:flex;flex-direction:column;gap:20px;background:var(--surface);border:1px solid var(--rule);padding:22px}
.contact b{display:block;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);margin-bottom:4px}
.contact .v{font-size:17px;overflow-wrap:anywhere}
.legal{margin-top:36px;font-size:14px;color:var(--ink-2);max-width:var(--measure)}

footer{border-top:1px solid var(--rule);padding-block:28px 44px;font-size:13.5px;color:var(--ink-2)}
footer p{max-width:var(--measure)} footer p+p{margin-top:8px}

.notfound{padding-block:96px;display:flex;flex-direction:column;gap:16px;align-items:flex-start}