:root{color-scheme:light;--ink:#153b3b;--muted:#536c6a;--accent:#007f73;--orange:#bb5b2c;--line:#d7e3dd;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;background:#f2f5ef;color:var(--ink)}
*{box-sizing:border-box}body{margin:0}main{max-width:960px;margin:auto;padding:48px 28px 32px}header{display:flex;align-items:center;gap:18px}.mark{font-size:60px;line-height:1;color:var(--accent);font-weight:700}.eyebrow{font-size:12px;letter-spacing:2px;margin:0 0 10px;font-weight:700}h1{font-size:clamp(26px,5vw,38px);letter-spacing:-1px;margin:0;font-weight:650}.intro{color:var(--muted);line-height:1.7;margin:22px 0 30px}form,.measurement{background:#fffef9;border:1px solid var(--line);border-radius:18px;padding:26px;margin-bottom:22px}label{display:flex;flex-direction:column;gap:9px;font-size:13px;font-weight:600;margin-bottom:19px}output{font-size:16px;overflow-wrap:anywhere;color:var(--accent)}input,select,button{font:inherit}input,select{width:100%;min-height:46px;border:1px solid #b8cbc3;background:#fffef9;border-radius:8px;padding:10px 12px;color:var(--ink)}input:focus-visible,select:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #7dc9ba;outline-offset:3px}.options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}details .options{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:18px}summary{font-size:13px;cursor:pointer}button{border:1px solid var(--accent);background:var(--accent);color:white;border-radius:9px;min-height:46px;padding:10px 19px;font-weight:600;cursor:pointer}button span{margin-left:24px}.secondary{background:transparent;color:var(--ink);border-color:#b8cbc3}button:disabled{opacity:.45;cursor:default}.actions{display:flex;gap:10px;flex-wrap:wrap}.hint,footer{font-size:12px;line-height:1.8;color:var(--muted)}.hint{margin:12px 0 20px}.status{display:flex;justify-content:space-between;gap:16px;font-size:14px;line-height:1.6}#elapsed{white-space:nowrap;font-variant-numeric:tabular-nums;color:var(--muted)}progress{display:block;width:100%;height:5px;border:0;border-radius:5px;margin:16px 0 28px;accent-color:var(--accent)}progress::-webkit-progress-bar{background:#e5ece5}progress::-webkit-progress-value{background:var(--accent)}.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.metrics article+article{border-left:1px solid var(--line);padding-left:20px}h2{font-size:12px;font-weight:550;margin:0;color:var(--muted)}.metrics p{margin:15px 0 8px;display:flex;align-items:baseline;gap:7px}.metrics strong{font-size:clamp(24px,4vw,40px);font-weight:550;letter-spacing:-1px;font-variant-numeric:tabular-nums}.metrics p span{font-size:11px;color:var(--muted)}small{font-size:11px;line-height:1.7;color:var(--muted)}.chart-head{display:flex;justify-content:space-between;margin-top:32px;font-size:11px;color:var(--muted)}i{display:inline-block;width:7px;height:7px;border-radius:50%;margin:0 4px 0 10px}.download-dot{background:var(--accent)}.upload-dot{background:var(--orange)}svg{display:block;width:100%;margin-top:10px;overflow:hidden}.grid{stroke:var(--line);stroke-width:1;fill:none}polyline{fill:none;stroke-width:2;stroke-linejoin:round}.download-line{stroke:var(--accent)}.upload-line{stroke:var(--orange)}#chart-note{margin-bottom:0}footer{padding:0 4px}input:disabled,select:disabled{opacity:.6}@media(max-width:600px){main{padding:28px 16px}form,.measurement{padding:20px 16px;border-radius:14px}.options{gap:10px}.options label{font-size:12px}select{padding:10px 6px}.metrics{grid-template-columns:1fr;gap:18px}.metrics article{display:grid;grid-template-columns:1fr auto;align-items:center}.metrics article+article{border-left:0;border-top:1px solid var(--line);padding:18px 0 0}.metrics p{grid-column:2;grid-row:1 / span 2;margin:0}.metrics small{grid-column:1}.metrics strong{font-size:32px}details .options{grid-template-columns:1fr;gap:0}.actions button{flex:1;padding:10px 8px;font-size:13px;white-space:nowrap}button span{margin-left:6px}.chart-head{margin-top:26px}}