:root{
  --bg:#070709;--bg2:#0c0c10;--panel:#121218;--panel2:#18181f;
  --inset:#0a0a0e;--border:#22222a;--border-strong:#33333e;
  --text:#eceae3;--muted:#95938b;--faint:#5f5e58;
  --accent:#c8f04a;--accent-ink:#12160a;--accent-dim:rgba(200,240,74,.12);
  --danger:#e5534b;--amber:#e0a23f;--ok:#7ed06f;
  --radius:12px;--radius-sm:7px;
  --mono:"Cascadia Code","JetBrains Mono",Consolas,monospace;
  --sans:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --display:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}[hidden]{display:none!important}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:15px/1.55 var(--sans);color-scheme:dark;min-height:100%}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.top{display:flex;align-items:center;justify-content:space-between;padding:14px 28px;border-bottom:1px solid transparent;background:rgba(7,7,9,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);position:sticky;top:0;z-index:40}
.top.solid{border-bottom-color:var(--border)}
.brand{font:600 12px/1 var(--sans);letter-spacing:.34em;text-transform:uppercase;color:var(--text)}
.brand span{color:var(--muted);letter-spacing:.08em;margin-left:10px;font-weight:500;text-transform:none}
.nav{display:flex;gap:2px;flex-wrap:wrap}
.nav a{padding:7px 12px;border-radius:999px;color:var(--muted);font-size:11px;font-weight:600;letter-spacing:.35px;text-transform:uppercase;text-decoration:none}
.nav a:hover{color:var(--text);background:var(--panel);text-decoration:none}
.nav a.on{color:var(--accent-ink);background:var(--accent)}
.wrap{max-width:1100px;margin:0 auto;padding:28px 22px 60px}
.wrap-wide{max-width:1180px;margin:0 auto;padding:0 28px}
.hero{padding:48px 0 28px}
.hero h1{font-size:clamp(28px,5vw,44px);font-weight:600;letter-spacing:-.02em;margin:0 0 12px;line-height:1.15}
.hero p{color:var(--muted);max-width:540px;font-size:15px;margin:0 0 22px}
.row{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:7px;background:var(--panel2);border:1px solid var(--border-strong);border-radius:var(--radius-sm);color:var(--text);font:inherit;font-weight:600;font-size:12px;padding:9px 15px;cursor:pointer;white-space:nowrap;text-decoration:none}
.btn:hover{border-color:var(--faint);text-decoration:none}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{background:#d5f76b}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn.ghost{background:transparent}
.btn.lg{padding:12px 18px;font-size:13px;border-radius:999px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin-top:28px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:8px;transition:border-color .2s,transform .2s}
.card:hover{border-color:var(--border-strong);text-decoration:none;transform:translateY(-1px)}
.card h3{margin:0;font-size:15px;font-weight:600;color:var(--text)}
.card p{margin:0;color:var(--muted);font-size:13px;flex:1}
.tag{display:inline-block;font-size:10px;font-family:var(--mono);padding:1px 7px;border:1px solid var(--border-strong);border-radius:3px;color:var(--muted);letter-spacing:.3px;text-transform:uppercase}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:600;padding:3px 9px;border-radius:999px;border:1px solid var(--border-strong);background:var(--panel2)}
.badge.warn{border-color:var(--amber);color:var(--amber);background:rgba(224,162,63,.1)}
.badge.bad{border-color:var(--danger);color:var(--danger);background:rgba(229,83,75,.1)}
.badge.ok{border-color:var(--ok);color:var(--ok);background:rgba(126,208,111,.1)}
.muted{color:var(--muted)}.faint{color:var(--faint);font-size:12px}.mono{font-family:var(--mono)}
.fld{display:block;margin-bottom:14px}
.fld>span{display:block;font-size:11px;font-weight:600;letter-spacing:.4px;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
input[type=text],input[type=url],input[type=file],select,textarea{
  width:100%;background:var(--inset);border:1px solid var(--border);border-radius:var(--radius-sm);
  color:var(--text);font:inherit;padding:8px 10px;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--accent)}
.dropzone{border:1px dashed var(--border-strong);border-radius:var(--radius);background:var(--inset);min-height:160px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--faint);font-size:13px;cursor:pointer;text-align:center;padding:22px;position:relative}
.dropzone:hover,.dropzone.drag{border-color:var(--accent);color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.cell{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.cell .thumb{aspect-ratio:1;background:var(--inset);display:flex;align-items:center;justify-content:center;position:relative}
.cell .thumb canvas,.cell .thumb img,.cell .thumb video{width:100%;height:100%;object-fit:contain;display:block}
.cell .meta{padding:10px 12px;font-size:12px;display:flex;flex-direction:column;gap:4px}
.cell .meta .nm{font-family:var(--mono);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--muted)}
.panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px}
.layout2{display:grid;grid-template-columns:320px 1fr;gap:18px}
@media(max-width:820px){.layout2{grid-template-columns:1fr}}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{padding:5px 10px;border-radius:999px;border:1px solid var(--border-strong);background:var(--panel2);font-size:12px;cursor:pointer;color:var(--muted)}
.chip.on{border-color:var(--accent);color:var(--accent-ink);background:var(--accent)}
.toggle{display:inline-flex;border:1px solid var(--border-strong);border-radius:999px;overflow:hidden}
.toggle button{background:transparent;border:0;color:var(--muted);padding:6px 14px;font:inherit;font-size:12px;font-weight:600;cursor:pointer}
.toggle button.on{background:var(--accent);color:var(--accent-ink)}
.footer{margin-top:48px;padding-top:18px;border-top:1px solid var(--border);color:var(--faint);font-size:12px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.log{background:var(--inset);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px;font:12px/1.45 var(--mono);max-height:220px;overflow:auto;white-space:pre-wrap;color:var(--muted)}
.progress{height:3px;background:var(--border);border-radius:2px;overflow:hidden;margin:8px 0}
.progress>i{display:block;height:100%;width:0;background:var(--accent);transition:width .4s}

/* ——— marketing launch page ——— */
.mkt-hero{
  display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;
  padding:64px 0 48px;min-height:min(78vh,760px);
}
@media(max-width:960px){
  .mkt-hero{grid-template-columns:1fr;min-height:0;padding:40px 0 28px}
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:11px;font-weight:600;
  letter-spacing:.22em;text-transform:uppercase;color:var(--accent);margin-bottom:18px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--accent);opacity:.7}
.mkt-hero h1{
  font-family:var(--display);font-size:clamp(40px,6.4vw,68px);font-weight:560;
  letter-spacing:-.045em;line-height:1.02;margin:0 0 18px;color:var(--text);
}
.mkt-hero .pitch{
  font-size:clamp(16px,2vw,19px);color:var(--muted);max-width:34em;margin:0 0 28px;line-height:1.5;
}
.hero-stage-wrap{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid var(--border);background:
    radial-gradient(120% 80% at 50% 20%, rgba(200,240,74,.08), transparent 55%),
    linear-gradient(180deg,#101016 0%,#070709 100%);
  aspect-ratio:1.05/1;min-height:320px;box-shadow:0 30px 80px rgba(0,0,0,.45);
}
#heroSplat{position:absolute;inset:0}
#heroSplat canvas{width:100%!important;height:100%!important}
.hero-stage-meta{
  position:absolute;left:14px;right:14px;bottom:14px;z-index:3;
  display:flex;justify-content:space-between;align-items:flex-end;gap:10px;flex-wrap:wrap;
  pointer-events:none;
}
.hero-stage-meta .badge{pointer-events:auto}
.section{padding:72px 0;border-top:1px solid var(--border)}
.section-kicker{
  font-size:11px;font-weight:700;letter-spacing:.24em;text-transform:uppercase;
  color:var(--accent);margin:0 0 14px;
}
.section h2{
  font-size:clamp(28px,4vw,42px);font-weight:560;letter-spacing:-.035em;
  line-height:1.1;margin:0 0 16px;max-width:16em;
}
.section .lede{color:var(--muted);font-size:17px;max-width:40em;margin:0 0 28px;line-height:1.55}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:820px){.pillars{grid-template-columns:1fr}}
.pillar{
  display:flex;flex-direction:column;gap:12px;padding:26px 24px 24px;
  background:linear-gradient(180deg,rgba(255,255,255,.025),transparent 40%),var(--panel);
  border:1px solid var(--border);border-radius:18px;min-height:220px;
  transition:border-color .2s, transform .2s;text-decoration:none;color:inherit;
}
.pillar:hover{border-color:rgba(200,240,74,.35);transform:translateY(-2px);text-decoration:none}
.pillar .num{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.08em}
.pillar h3{margin:0;font-size:22px;font-weight:600;letter-spacing:-.02em;color:var(--text)}
.pillar p{margin:0;color:var(--muted);font-size:14px;flex:1}
.pillar .go{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.vocab{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(max-width:720px){.vocab{grid-template-columns:1fr}}
.vocab-card{
  padding:22px 22px 20px;border-radius:16px;border:1px solid var(--border);background:var(--panel);
}
.vocab-card dt{
  font-family:var(--mono);font-size:13px;color:var(--accent);margin:0 0 8px;letter-spacing:.02em;
}
.vocab-card dd{margin:0;color:var(--muted);font-size:14px;line-height:1.5}
.sixdof{
  display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center;
}
@media(max-width:900px){.sixdof{grid-template-columns:1fr}}
.sixdof-diagram{
  border:1px solid var(--border);border-radius:18px;background:var(--panel);
  padding:18px;overflow:hidden;
}
.sixdof-diagram svg{width:100%;height:auto;display:block}
.angle-list{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 0}
.angle-list span{
  font-family:var(--mono);font-size:11px;padding:5px 9px;border-radius:999px;
  border:1px solid var(--border-strong);color:var(--muted);background:var(--panel2);
}
.mode-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.mode-pill{
  padding:10px 14px;border-radius:12px;border:1px solid var(--border);background:var(--inset);
  font-size:13px;color:var(--muted);
}
.mode-pill b{display:block;color:var(--text);font-size:13px;margin-bottom:2px}
.coming{
  display:inline-flex;align-items:center;gap:8px;padding:4px 10px;border-radius:999px;
  border:1px dashed var(--border-strong);color:var(--amber);font-size:11px;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;
}
.presets{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:820px){.presets{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.presets{grid-template-columns:1fr}}
.preset{
  padding:16px 16px 14px;border-radius:14px;border:1px solid var(--border);background:var(--panel);
}
.preset .nm{font-family:var(--mono);font-size:13px;color:var(--text);margin:0 0 6px}
.preset p{margin:0;font-size:12px;color:var(--muted);line-height:1.45}
.sister{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:28px 30px;border-radius:18px;border:1px solid var(--border);
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(200,240,74,.1), transparent 50%),
    var(--panel);
}
.sister h3{margin:0 0 6px;font-size:22px;letter-spacing:-.02em}
.sister p{margin:0;color:var(--muted);max-width:36em;font-size:14px}
.mkt-footer{
  margin-top:0;padding:36px 0 48px;border-top:1px solid var(--border);
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px;color:var(--faint);font-size:13px;
}
@media(max-width:720px){.mkt-footer{grid-template-columns:1fr}}
.mkt-footer .brand-foot{font:600 12px/1 var(--sans);letter-spacing:.3em;text-transform:uppercase;color:var(--text);margin-bottom:10px}
.mkt-footer a{color:var(--muted)}
.mkt-footer a:hover{color:var(--accent)}
.mkt-footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.mkt-footer h4{margin:0 0 12px;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.fade-up{animation:fadeUp .7s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.about-hero{padding:56px 0 20px}
.about-hero h1{font-size:clamp(34px,5vw,52px);letter-spacing:-.04em;margin:0 0 14px;font-weight:560}
.stack{display:flex;flex-direction:column;gap:14px;margin-top:8px}

/* hero SPLF mark, styled like the SPLFY logo (2026-11-05) */
.mkt-hero h1 .splf-mark{text-transform:uppercase;letter-spacing:.32em;margin-right:-.12em;font-weight:inherit}