:root{color-scheme:dark;--bg:#0b1117;--panel:#111d27;--text:#ebf2f7;--muted:#99adba;--cyan:#42dddb;--border:#263744}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 'Segoe UI',Arial,sans-serif}header,main,footer{max-width:1240px;margin:auto}header{padding:28px 36px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}a{color:inherit;text-decoration:none}.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:2px;font-size:20px}.accent,h1 span{color:var(--cyan)}.tag,.eyebrow,.dot,.panel-head,.status,.scale-top,.formula>span,footer{font-size:11px;letter-spacing:1.6px}.tag{color:var(--muted)}main{padding:0 36px}.intro{padding:60px 0 40px;max-width:760px}.eyebrow{color:var(--cyan);font-weight:700}h1{font-size:clamp(40px,5vw,64px);line-height:1.1;letter-spacing:-2.5px;margin:18px 0 22px}h2{font-size:27px;line-height:1.25;margin:17px 0}h3{font-size:17px}.lead{color:var(--muted);max-width:620px;font-size:17px}.pills{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.pills span{border:1px solid var(--border);border-radius:30px;padding:6px 14px;font-size:12px;color:#b9cbd6}.workspace{display:grid;grid-template-columns:1fr 1.15fr;gap:22px}.panel{padding:30px;background:var(--panel);border:1px solid var(--border);border-radius:18px}.panel-head{display:flex;justify-content:space-between;gap:12px}.dot{color:var(--cyan);letter-spacing:1px}.muted{color:var(--muted);font-size:14px}.input-panel>.muted{margin-bottom:24px}label{display:flex;justify-content:space-between;font-size:13px;margin:14px 0 7px}label span{color:var(--muted)}input{width:100%;border:1px solid #354956;border-radius:8px;padding:12px 14px;background:#0b151e;color:var(--text);font:20px 'Segoe UI',sans-serif;font-variant-numeric:tabular-nums}input:focus{outline:2px solid var(--cyan);outline-offset:2px}.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}button{cursor:pointer;font:inherit}button:focus-visible,a:focus-visible{outline:2px solid var(--cyan);outline-offset:4px}.primary{width:100%;background:var(--cyan);color:#062125;padding:13px 18px;border:0;border-radius:8px;display:flex;justify-content:space-between;font-weight:700}.error{color:#ffb1a7;min-height:20px;font-size:13px}.examples{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px;align-items:center;font-size:11px}.examples>span{width:100%;color:var(--muted);margin-bottom:3px}.examples button{border:1px solid #354956;color:#c8d6df;background:transparent;border-radius:5px;padding:5px 9px}.examples button:hover{border-color:var(--cyan)}.status{display:inline-block;color:var(--cyan);border:1px solid #2b5b5c;background:#123438;padding:7px 10px;border-radius:5px;margin-top:28px;font-weight:700}.result-panel h2{font-size:36px;margin-top:22px}.metrics{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:22px 0;margin:25px 0}.metrics span{display:block;color:var(--muted);font-size:11px}.metrics strong{display:block;font-size:18px;font-weight:600;margin-top:8px;white-space:nowrap}.scale-box{padding:22px 18px;background:#0b151e;border-radius:10px}.scale-top{display:flex;justify-content:space-between;align-items:center;color:var(--muted)}.scale-top strong{color:var(--text);font-size:17px;letter-spacing:0}.track{height:12px;border-radius:10px;background:#34434e;position:relative;margin:33px 0 20px}.allowed{position:absolute;left:20%;right:20%;height:100%;background:#22696a}.marker{position:absolute;left:50%;top:-8px;width:4px;height:28px;background:var(--cyan);border-radius:4px;transform:translateX(-50%);box-shadow:0 0 16px #42dddb66}.scale-labels{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);gap:6px}.scale-box p{font-size:12px;margin-bottom:0}.formula{margin-top:24px}.formula>span{color:var(--muted)}.formula p{font-size:12px;color:#bdd0dd;white-space:pre-line}.outside .status{color:#ffba8f;border-color:#87583b;background:#3c291f}.outside .marker{background:#ffba8f;box-shadow:none}.knowledge{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px;padding:58px 0}.knowledge h2{font-size:26px}.knowledge p{color:var(--muted);font-size:14px}footer{border-top:1px solid var(--border);padding:24px 36px 36px;display:flex;justify-content:space-between;gap:20px;color:var(--muted);letter-spacing:1px}footer span:last-child{font-size:10px;letter-spacing:0}@media(max-width:900px){.workspace{grid-template-columns:1fr}.knowledge{grid-template-columns:1fr;gap:10px}.tag{display:none}}@media(max-width:500px){header,footer{padding:22px}main{padding:0 20px}.intro{padding-top:36px}.panel{padding:20px}.panel-head{font-size:9px}.metrics{gap:6px}.metrics strong{font-size:14px}.scale-labels{font-size:9px}footer{flex-direction:column}.result-panel h2{font-size:30px}}