:root{--bg:#f6f7f9;--surface:#fff;--text:#1d2330;--muted:#5b6475;--primary:#1d3557;--primary-text:#fff;--border:#d8dde6;--error:#b42318;--band:#1d35571f;--warn:#8a5a00;--radius:12px;color:var(--text);background:var(--bg);-webkit-text-size-adjust:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}@media (prefers-color-scheme:dark){:root{--bg:#0f141c;--surface:#18202c;--text:#e8ecf2;--muted:#9aa4b5;--primary:#8ab4f8;--primary-text:#0f141c;--border:#2c3645;--error:#ff8a80;--band:#8ab4f82e;--warn:#f0c36d}}*{box-sizing:border-box}body{background:var(--bg);margin:0}h1{margin:0;font-size:1.5rem}h2{margin:0;font-size:1.1rem}p{margin:0;line-height:1.5}a{color:var(--primary)}.page{max-width:40rem;padding:max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(24px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));margin:0 auto}.narrow{max-width:26rem}.stack>*+*,.page.narrow>*+*{margin-top:12px}.row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.spread{justify-content:space-between}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.muted{color:var(--muted)}.small{font-size:.9rem}.error{color:var(--error)}.field{gap:6px;display:grid}.field span{font-weight:600}input[type=email],input[type=search],input[type=number],input[inputmode=numeric]{font:inherit;border:1px solid var(--border);background:var(--surface);min-height:44px;color:var(--text);border-radius:10px;width:100%;padding:8px 12px;font-size:1.1rem}.check{align-items:flex-start;gap:10px;display:flex}.check input{flex:none;width:22px;height:22px;margin-top:2px}button{font:inherit;border:1px solid var(--primary);background:var(--primary);min-height:44px;color:var(--primary-text);cursor:pointer;border-radius:10px;width:100%;padding:10px 16px;font-weight:600}button:disabled{opacity:.5;cursor:default}button.secondary{color:var(--primary);background:0 0}button.link{width:auto;min-height:44px;color:var(--primary);background:0 0;border:none;padding:0;font-weight:500;text-decoration:underline}.segmented{border:1px solid var(--primary);border-radius:10px;display:flex;overflow:hidden}.segmented button{color:var(--primary);background:0 0;border:none;border-radius:0}.segmented button.selected{background:var(--primary);color:var(--primary-text)}.prose article{line-height:1.6}.prose table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--border);text-align:left;vertical-align:top;padding:6px 8px}.label{font-weight:600;display:block}.nowrap{flex-wrap:nowrap}button.fit{flex:none;width:auto}input[type=range]{width:100%;min-height:44px;accent-color:var(--primary)}.badge{border:1px solid var(--border);border-radius:999px;flex:none;padding:2px 10px;font-size:.85rem;font-weight:600}.status{margin-left:8px;font-weight:600}.status.delayed,.status.outdated{color:var(--warn)}.reading{font-size:2.4rem;font-weight:700;line-height:1.1}.results{margin:0;padding:0;list-style:none}.results li{border-top:1px solid var(--border);padding:10px 0}.facts{grid-template-columns:repeat(auto-fit,minmax(7rem,1fr));gap:8px 16px;margin:0;display:grid}.facts dt{color:var(--muted);font-size:.85rem}.facts dd{margin:0;font-weight:600}.range-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.chart{margin:0}.chart>svg{width:100%;height:auto;display:block}.chart .band{fill:var(--band)}.chart .grid{stroke:var(--border);stroke-width:1px}.chart .axis{fill:var(--muted);font-size:10px}.chart .now-label{fill:var(--text)}.line{fill:none;stroke:var(--primary);stroke-width:2px;stroke-linejoin:round;stroke-linecap:round}.line.forecast{stroke-dasharray:5 4;opacity:.8}.now{stroke:var(--text);stroke-width:1.5px;stroke-dasharray:2 2}.legend{color:var(--muted);flex-wrap:wrap;gap:6px 16px;margin:8px 0 0;padding:0;font-size:.85rem;list-style:none;display:flex}.legend li{align-items:center;gap:6px;display:flex}.swatch{background:var(--band);border:1px solid var(--border);width:16px;height:12px;display:inline-block}.chart details{margin-top:8px}.chart summary{cursor:pointer;min-height:44px;color:var(--primary);align-items:center;display:flex}table.data{border-collapse:collapse;width:100%;font-size:.9rem}table.data th,table.data td{text-align:left;border-bottom:1px solid var(--border);padding:4px 6px}footer{padding-top:8px}