/* octo-si-site v2 · 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. One same-origin
   script (tentaloo.js) runs the Adult Tentaloo chat; the hero art (the Adult Tentaloo picture in an SVG frame) is animated here, in CSS only. */
: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{color:var(--ink);font-weight:800;font-size:19px;letter-spacing:.02em;white-space:nowrap}
/* OCTO mark: self-hosted Twemoji. 0.85em and the -0.12em shift use this font-size. */
.brand-mark{display:inline-block;width:0.85em;height:0.85em;vertical-align:-0.12em;margin-inline-end:10px;flex:none;font-size:28px;line-height:1;font-weight:400;font-style:normal}
.brand-mark img{display:block;width:100%;height:100%}
.brand-word{color:#F59E0B}
@media (prefers-color-scheme: light){:root:not([data-theme="dark"]) .brand-word{color:#B45309}}
:root[data-theme="light"] .brand-word{color:#B45309}
.brand-shield{display:inline-block;width:0.85em;height:0.85em;vertical-align:-0.12em;margin-inline-start:.2em}
.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}}
@media (max-width:400px){header .wrap{gap:12px}nav{gap:14px}nav .mid{display:none}}

.hero{padding-block:72px 56px;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:40px;align-items:center}
.hero-copy{display:flex;flex-direction:column;gap:20px;align-items:flex-start;min-width:0}
@media (max-width:860px){.hero{grid-template-columns:minmax(0,1fr);gap:32px;padding-block:56px 48px}}
.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}
.bab{margin-top:24px;display:grid;grid-template-columns:.7fr 1.3fr;gap:16px;max-width:72ch}
@media (max-width:640px){.bab{grid-template-columns:1fr;gap:10px}}
.bab>div{padding:16px 20px;border:1px solid var(--rule)}
.bab .before{color:var(--ink-2)} .bab .after{background:var(--surface);border-left:3px solid var(--accent)}
.bab b{display:block;font-size:12px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px;color:var(--ink-2)}
.bab .after b{color:var(--accent-ink)}
.bab p{font-size:17px}
.fab{margin:12px 0 0;display:grid;grid-template-columns:1fr;gap:2px}
.fab dt{font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-ink);margin-top:8px}
.fab dd{margin:0;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)}
.next{margin-top:24px;font-size:16px}
@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 h3{font-size:19px;margin-bottom:10px}
.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}

/* Adult Tentaloo (Tentaloo × OCTO SI crossover). Tentaloo's own navy, blue, mint and amber, inside the art and console. */
.hero-art{margin:0;justify-self:center;width:100%;max-width:360px}
@media (max-width:860px){.hero-art{max-width:300px;justify-self:start}}
.tt-mascot{display:block;width:100%;height:auto;border-radius:24px}
.tt-mascot text{fill:#9FB0CC;font-family:inherit}
.hero-art figcaption{margin-top:10px;font-size:13px;color:var(--ink-2);line-height:1.45}
.hero-art figcaption a{text-decoration:underline;text-underline-offset:2px}
.tt-body{animation:tt-bob 5s ease-in-out infinite}
.tt-shadow{transform-box:fill-box;transform-origin:center;animation:tt-shade 5s ease-in-out infinite}
.tt-orbit{transform-origin:180px 160px;animation:tt-spin 18s linear infinite}
.tt-orbit.tt-rev{animation-duration:26s;animation-direction:reverse}
.tt-ripple{transform-box:fill-box;transform-origin:center;opacity:0;animation:tt-ripple 3.6s ease-out infinite}
.tt-halo{transform-box:fill-box;transform-origin:center;animation:tt-pulse 3.2s ease-in-out infinite}
.tt-pt{opacity:0;animation:tt-stream 2.8s ease-out infinite}
.tt-d1{animation-delay:-.9s} .tt-d2{animation-delay:-1.8s} .tt-d3{animation-delay:-2.6s}
@keyframes tt-bob{50%{transform:translateY(-7px)}}
@keyframes tt-shade{50%{transform:scaleX(.86);opacity:.7}}
@keyframes tt-spin{to{transform:rotate(360deg)}}
@keyframes tt-ripple{0%{transform:scale(1);opacity:.75}100%{transform:scale(4.2);opacity:0}}
@keyframes tt-pulse{50%{transform:scale(1.25);opacity:.55}}
@keyframes tt-stream{0%{transform:translateY(0);opacity:0}15%{opacity:1}100%{transform:translateY(-46px);opacity:0}}
@media (prefers-reduced-motion:reduce){
  .tt-body,.tt-shadow,.tt-orbit,.tt-ripple,.tt-halo,.tt-pt{animation:none}
  .tt-ripple{opacity:.35} .tt-pt{opacity:.8;transform:translateY(-16px)}
}

/* The chat: a launcher button fixed bottom right that opens a chat panel, like the chat boxes on most sites. */
.vh{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.tt-launch{position:fixed;right:20px;bottom:20px;z-index:30;display:flex;align-items:center;gap:10px;padding:8px 18px 8px 10px;border:1px solid #103C62;border-radius:999px;background:#0B1630;color:#E6EDF7;font:inherit;font-size:15px;font-weight:700;cursor:pointer;box-shadow:0 10px 30px rgba(0,0,0,.45)}
.tt-launch:hover{border-color:#00D68B}
.tt-launch img{width:36px;height:auto;display:block}
.tt-launch[hidden],.tt-console[hidden],.tt-nojs[hidden],.tt-try[hidden],.tt-open-row[hidden]{display:none}
.tt-open-row{margin-top:24px}
.tt-open-row .cta{border:0;cursor:pointer;font-family:inherit}
.tt-console{position:fixed;right:20px;bottom:20px;z-index:31;width:min(380px,calc(100vw - 32px));height:min(600px,calc(100dvh - 40px));display:flex;flex-direction:column;background:#0B1630;color:#E6EDF7;border:1px solid #103C62;border-radius:18px;overflow:hidden;box-shadow:0 18px 50px rgba(0,0,0,.55)}
@media (max-width:560px){.tt-console{right:0;bottom:0;width:100vw;height:100dvh;border-radius:0}.tt-launch{right:16px;bottom:16px}}
.tt-console a{color:#6DF2BE}
.tt-console :focus-visible{outline-color:#6DF2BE}
.tt-head{display:flex;align-items:center;gap:10px;padding:12px 14px;background:#132447;border-bottom:1px solid #103C62}
.tt-head img{width:32px;height:auto;display:block}
.tt-head p{flex:1;line-height:1.25}
.tt-head b{display:block;font-size:15.5px}
.tt-head small{display:block;font-size:12px;color:#9FB0CC}
.tt-close{border:0;background:transparent;color:#E6EDF7;font-size:26px;line-height:1;width:36px;height:36px;border-radius:50%;cursor:pointer}
.tt-close:hover{background:#103C62}
.tt-modes{border:0;margin:0;padding:10px 14px 0;display:flex;gap:6px}
.tt-modes label{flex:1;display:flex;justify-content:center;border:1px solid #103C62;border-radius:999px;padding:6px 10px;cursor:pointer;font-weight:700;font-size:13.5px;color:#9FB0CC}
.tt-modes label:has(input:checked){border-color:#00D68B;color:#E6EDF7;background:#103C62}
.tt-modes input{position:absolute;opacity:0;pointer-events:none}
.tt-modes label:has(input:focus-visible){outline:2px solid #6DF2BE;outline-offset:2px}
.tt-log{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:8px;padding:14px}
.tt-msg{max-width:85%;padding:9px 13px;font-size:15px;line-height:1.45;border-radius:16px}
.tt-msg b{display:none}
.tt-msg p{overflow-wrap:anywhere}
.tt-bot{align-self:flex-start;background:#132447;border-bottom-left-radius:4px}
.tt-you{align-self:flex-end;background:#00D68B;color:#0B1630;border-bottom-right-radius:4px}
.tt-wait p{display:flex;gap:4px;padding-block:6px}
.tt-wait i{width:7px;height:7px;border-radius:50%;background:#9FB0CC;animation:tt-dot 1.2s ease-in-out infinite}
.tt-wait i:nth-child(2){animation-delay:.15s} .tt-wait i:nth-child(3){animation-delay:.3s}
@keyframes tt-dot{40%{transform:translateY(-4px);opacity:.5}}
.tt-try{display:flex;flex-wrap:wrap;gap:6px;padding:0 14px 10px}
.tt-try span{display:none}
.tt-try button{font:inherit;font-size:13px;color:#E6EDF7;background:transparent;border:1px solid #103C62;border-radius:999px;padding:5px 11px;cursor:pointer}
.tt-try button:hover{border-color:#4AA2FF}
.tt-ask{padding:10px 12px;border-top:1px solid #103C62}
.tt-row{display:flex;gap:8px}
.tt-row input{flex:1;min-width:0;font:inherit;font-size:16px;color:#E6EDF7;background:#132447;border:1px solid #103C62;border-radius:999px;padding:10px 14px}
.tt-row input::placeholder{color:#9FB0CC;opacity:1}
.tt-send{border:0;border-radius:999px;cursor:pointer;font:inherit;font-weight:700;font-size:14.5px;padding:0 16px;background:#00D68B;color:#0B1630}
.tt-send:disabled{opacity:.5;cursor:default}
.tt-note{padding:0 14px 10px;font-size:11.5px;color:#9FB0CC;line-height:1.4}
@media (prefers-reduced-motion:reduce){.tt-wait i{animation:none}}
.tt-nojs{margin-top:20px;color:var(--ink-2);font-size:15px}
.tt-all{margin-top:24px;max-width:72ch}
.tt-all summary{cursor:pointer;font-weight:700;color:var(--accent-ink)}
.tt-all h3{font-size:16px;margin-top:20px;letter-spacing:.04em}
.tt-all dl{margin:8px 0 0}
.tt-all .tt-a{padding-block:10px;border-top:1px solid var(--rule)}
.tt-all dt{font-weight:700;font-size:15px}
.tt-all dd{margin:4px 0 0;color:var(--ink-2);font-size:15px}