:root {
  color-scheme: dark;
  --bg:#030303; --panel:#101010; --panel2:#171717; --text:#f4f4f4; --muted:#a7a7a7; --line:#343434; --accent:#ffffff;
}
*{box-sizing:border-box} body{margin:0;background:radial-gradient(circle at 25% 0%,#242424 0,#050505 42%,#000 100%);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;min-height:100vh} 
.shell{width:min(1180px,calc(100% - 32px));margin:0 auto;padding:56px 0}.hero{max-width:820px;margin-bottom:34px}.eyebrow{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}.hero h1{font-size:clamp(48px,8vw,104px);line-height:.88;margin:0 0 20px;font-weight:900;letter-spacing:-.07em}.lead{font-size:clamp(18px,2vw,24px);line-height:1.35;color:#d9d9d9;margin:0}.app-card{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;padding:22px;border:1px solid rgba(255,255,255,.12);border-radius:32px;background:linear-gradient(135deg,rgba(255,255,255,.08),rgba(255,255,255,.025));box-shadow:0 30px 100px rgba(0,0,0,.45);backdrop-filter:blur(12px)}.triangle-panel,.control-panel{background:rgba(10,10,10,.72);border:1px solid rgba(255,255,255,.09);border-radius:26px}.triangle-panel{padding:18px}.triangle-wrap{aspect-ratio:1.125/1;display:grid;place-items:center;min-height:420px}svg{width:100%;height:100%;max-height:650px;touch-action:none;cursor:crosshair}.vertex-label{fill:#fff;font-size:22px;font-weight:850;letter-spacing:.12em}.grid-lines line{stroke:#fff;stroke-width:1}.value-line{stroke:#fff;stroke-width:2;stroke-dasharray:8 10;opacity:.52}.pin{cursor:grab}.pin:active{cursor:grabbing}.hint{color:var(--muted);font-size:14px;text-align:center;padding:8px 0 2px}.control-panel{padding:22px;display:flex;flex-direction:column;gap:18px}.score-card{background:linear-gradient(180deg,#1c1c1c,#0c0c0c);border:1px solid rgba(255,255,255,.12);border-radius:22px;padding:20px}.muted{display:block;color:var(--muted);font-size:13px;margin-bottom:8px}.score-card strong{display:block;font-size:26px;letter-spacing:-.03em}.score-card p{color:#cfcfcf;margin:8px 0 0;line-height:1.45}.sliders{display:grid;gap:17px}.slider-row span{display:flex;justify-content:space-between;align-items:end;margin-bottom:8px}.slider-row small{color:var(--muted);font-size:14px}input[type=range]{width:100%;accent-color:#fff}details{border:1px solid rgba(255,255,255,.1);border-radius:18px;background:#0c0c0c;padding:14px}summary{cursor:pointer;font-weight:800}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}label{color:#dcdcdc;font-size:13px}input[type=number]{width:100%;margin-top:6px;background:#050505;border:1px solid #333;border-radius:12px;color:#fff;padding:11px;font:inherit}.results{display:grid;grid-template-columns:1fr;gap:10px}.results div{display:flex;justify-content:space-between;gap:14px;align-items:center;border-bottom:1px solid rgba(255,255,255,.1);padding:10px 0}.results span{color:var(--muted)}.results b{font-size:20px}.copy-btn{border:0;border-radius:999px;padding:15px 20px;background:#fff;color:#000;font-weight:900;cursor:pointer;transition:.18s transform,.18s opacity}.copy-btn:hover{transform:translateY(-1px);opacity:.92}.explain{max-width:780px;margin:34px 0 0;color:#d0d0d0}.explain h2{font-size:34px;margin:0 0 8px}.explain p{font-size:18px;line-height:1.55}.toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%) translateY(20px);background:#fff;color:#000;padding:12px 18px;border-radius:999px;font-weight:800;opacity:0;pointer-events:none;transition:.2s}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media (max-width:900px){.app-card{grid-template-columns:1fr}.triangle-wrap{min-height:330px}.field-grid{grid-template-columns:1fr}.shell{padding:34px 0}.hero h1{font-size:58px}}


.eyebrow a{
    color:#fff;
    text-decoration:none;
    font-weight:600;
}

.eyebrow a:hover{
    opacity:.8;
}