:root{color-scheme:dark;--ink:#edf8ff;--muted:#8ea7bd;--panel:#0d1b2a;--line:#20364a;--cyan:#51e7ff;--amber:#ffd166;--violet:#ae8cff}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 15% -10%,#173a55 0,transparent 36%),linear-gradient(155deg,#050a12,#081522 62%,#07101a);color:var(--ink);font:15px/1.5 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}main{width:min(1440px,100%);margin:auto;padding:clamp(18px,3vw,42px)}header{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:22px}.eyebrow{margin:0;color:var(--cyan);font-size:.72rem;font-weight:800;letter-spacing:.17em;text-transform:uppercase}h1{margin:.08em 0;font-size:clamp(2rem,5vw,4.5rem);line-height:1;letter-spacing:-.055em}.lede{max-width:680px;margin:10px 0 0;color:var(--muted);font-size:clamp(.95rem,1.5vw,1.15rem)}.status{flex:none;display:flex;align-items:center;gap:10px;padding:9px 14px;border:1px solid #29465e;border-radius:999px;background:#0b1a27;color:#ccecff}.status span{width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 14px var(--cyan)}.toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:10px;padding:12px;border:1px solid var(--line);border-bottom:0;border-radius:18px 18px 0 0;background:rgba(11,26,40,.88);backdrop-filter:blur(12px)}button{min-height:38px;border:1px solid #2d4a61;border-radius:10px;background:#102538;color:#d8ebf7;padding:7px 13px;font:inherit;font-weight:700;cursor:pointer}button:hover,button:focus-visible{border-color:var(--cyan);outline:none;box-shadow:0 0 0 2px #51e7ff28}button.active{background:#153a4d;border-color:var(--cyan);color:#fff}.presets{display:flex;gap:6px;padding-right:4px;border-right:1px solid var(--line)}label{display:flex;align-items:center;gap:8px;color:var(--muted);font-weight:700;padding:0 5px}input[type=range]{width:110px;accent-color:var(--cyan)}output{min-width:32px;color:var(--ink);font-variant-numeric:tabular-nums}.stage{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:0 0 18px 18px;background:#030810;box-shadow:0 30px 70px #0008}canvas{display:block;width:100%;height:auto;max-height:67vh;touch-action:none;cursor:crosshair}.legend{position:absolute;left:14px;bottom:12px;display:flex;gap:15px;padding:7px 10px;border:1px solid #20394d;border-radius:9px;background:#06121de6;color:#a9bdcd;font-size:.76rem}.legend span{display:flex;align-items:center;gap:6px}.legend i{width:14px;height:3px;border-radius:2px;background:var(--cyan)}.legend i.source{height:8px;width:8px;border-radius:50%;background:var(--amber)}.legend i.mirror{background:#dce9f2}.readout{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:12px}.readout article{padding:14px 16px;border:1px solid var(--line);border-radius:13px;background:linear-gradient(145deg,#0e1f2e,#0a1723)}.readout span{display:block;color:var(--muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.08em}.readout strong{font-size:1.25rem;font-variant-numeric:tabular-nums}details{margin-top:12px;padding:13px 17px;border:1px solid var(--line);border-radius:13px;background:#0a1723;color:var(--muted)}summary{color:var(--ink);font-weight:750;cursor:pointer}details p{margin:10px 0 2px;max-width:900px}@media(max-width:800px){header{align-items:flex-start;flex-direction:column}.status{align-self:flex-start}.toolbar{align-items:stretch}.presets{width:100%;overflow:auto;border-right:0;border-bottom:1px solid var(--line);padding-bottom:9px}.presets button{flex:1;white-space:nowrap}.readout{grid-template-columns:1fr 1fr}.legend{display:none}}@media(max-width:480px){main{padding:12px}.toolbar label{width:100%}.toolbar input{flex:1}.readout{grid-template-columns:1fr 1fr}.readout strong{font-size:1rem}}