:root{--bg:#0e0f12;--panel:#16181d;--line:#2a2e36;--tx:#e9ecf1;--mut:#9aa3ae;--acc:#4cc9f0;--grn:#7bd88f;--warn:#ff6b6b;--gold:#ffd166;--sqh-y:#e4cf58;--sqh-b:#6a7fc4;--sqh-g:#8ab84a}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.top{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;padding:14px 16px;border-bottom:1px solid var(--line);max-width:1240px;margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;letter-spacing:.2px}
.brand b{display:block;font-weight:700;line-height:1.15}.brand b span{color:var(--acc)}
.brand small{display:block;color:var(--sqh-y);font-size:12px;letter-spacing:.6px;text-transform:uppercase}
.what{margin:22px 0 6px}.what h2{font-size:18px;margin:0 0 12px}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.steps li{background:var(--panel);border:1px solid var(--line);border-top:3px solid var(--sqh-b);border-radius:12px;padding:12px 14px}
.steps li:nth-child(2){border-top-color:var(--sqh-g)}.steps li:nth-child(3){border-top-color:var(--sqh-y)}.steps li:nth-child(4){border-top-color:var(--acc)}
.steps b{display:block;font-size:15px;margin-bottom:4px}.steps span{color:#c9cfd8;font-size:14px}
.about h2{font-size:17px;margin:0 0 6px}.about ul{margin:0;padding-left:18px;color:#c9cfd8;font-size:14.5px}.about li{margin:5px 0}
footer{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
footer img{height:auto;max-width:160px}footer p{margin:0;line-height:1.5}footer b{color:var(--sqh-y);font-weight:600}
@media (max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.steps{grid-template-columns:1fr}}
.chip{font-size:12.5px;padding:4px 10px;border-radius:999px;border:1px solid}
.chip.warn{color:var(--warn);border-color:#ff6b6b55;background:#ff6b6b12}
main{max-width:1240px;margin:0 auto;padding:0 16px}
.hero{padding:28px 0 8px}
h1{font-size:clamp(26px,5vw,38px);line-height:1.15;margin:0 0 10px}
.lead{color:var(--mut);max-width:62ch;margin:0 0 8px}
.privacy{margin:0;color:var(--grn);font-size:14.5px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px;margin:18px 0}
.drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:120px;border:1.5px dashed #3a3f49;border-radius:12px;cursor:pointer;text-align:center;padding:16px}
.drop.over{border-color:var(--acc);background:#4cc9f010}
.drop input{display:none}.drop span{color:var(--mut);font-size:14px}
.demo,.opts,.fix{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;margin-top:14px;font-size:14.5px;color:var(--mut)}
button{font:inherit;font-size:14.5px;color:var(--tx);background:#22262e;border:1px solid #343944;border-radius:10px;padding:9px 14px;min-height:42px;cursor:pointer}
button:active{transform:translateY(1px)}
button.on{border-color:var(--gold);color:var(--gold)}
button.primary{background:var(--acc);color:#071318;border-color:var(--acc);font-weight:600;width:100%;margin-top:12px}
.opts label{display:flex;align-items:center;gap:8px;color:var(--tx)}
.opts input[type=number]{width:72px;font:inherit;color:var(--tx);background:#0e0f12;border:1px solid #343944;border-radius:8px;padding:7px 8px}
.opts input[type=checkbox]{width:20px;height:20px;accent-color:var(--acc)}
.status{min-height:24px;color:var(--gold);margin:4px 0}
.results{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.7fr);gap:20px;align-items:start}
.results h2{font-size:15px;margin:4px 0 8px}.results h2 small{color:var(--mut);font-weight:400}
canvas{width:100%;display:block;border-radius:10px;background:#000}
#fundus{touch-action:manipulation}
.scans canvas{margin-bottom:16px}
.fix{margin-top:10px}.fix span{width:100%}
.meas{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;margin:14px 0 0;font-size:14px}
.meas dt{color:var(--mut)}.meas dd{margin:0;font-variant-numeric:tabular-nums}
.note{color:var(--mut);font-size:13.5px;margin:-6px 0 0}
.method h2{font-size:18px;margin:0 0 8px}.method h3{font-size:15px;margin:10px 0 4px}
.ok{color:var(--grn)}.bad{color:var(--warn)}
.method ul{margin:0;padding-left:18px;color:#c9cfd8;font-size:14.5px}.method li{margin:4px 0}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.fine{color:var(--mut);font-size:13.5px;margin:14px 0 0}
footer{max-width:1240px;margin:0 auto;padding:18px 16px 30px;color:#6b7380;font-size:13px}
@media (max-width:860px){.results,.grid2{grid-template-columns:1fr}}