:root{--bg: #f7f6f2;--surface: #ffffff;--ink: #1f2330;--muted: #5f6475;--line: #e3e1da;--accent: #3b4a8a;--accent-ink: #ffffff;--accent-soft: #e6e9f6;--nap: #9aa9e0;--night: #3b4a8a;--band: rgba(59, 74, 138, .1);--good: #2f7d57;--warn: #9a6400;--bad: #b3261e;--t1: #2f7d57;--t2: #3b4a8a;--t3: #8a5a00;--radius: 14px;color-scheme:light}@media(prefers-color-scheme:dark){:root{--bg: #12141b;--surface: #1b1e28;--ink: #eceef5;--muted: #a3a8b8;--line: #2c3040;--accent: #9fb0f5;--accent-ink: #12141b;--accent-soft: #252b44;--nap: #5d6bab;--night: #9fb0f5;--band: rgba(159, 176, 245, .12);--good: #6fcf9c;--warn: #e8b64c;--bad: #ff8a80;--t1: #6fcf9c;--t2: #9fb0f5;--t3: #e8b64c;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-text-size-adjust:100%}h1{font-size:1.6rem;margin:0;line-height:1.2}h2{font-size:1.05rem;margin:0 0 .5rem}p{margin:0 0 .5rem}a{color:var(--accent)}.app main{max-width:560px;margin:0 auto;padding:20px 16px calc(96px + env(safe-area-inset-bottom))}.loading{display:grid;place-items:center;min-height:60vh;color:var(--muted)}.stack{display:flex;flex-direction:column;gap:14px}.row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}.row-between{display:flex;justify-content:space-between;align-items:baseline;gap:10px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:10px}@media(max-width:520px){.grid-2{grid-template-columns:1fr}}.page-head{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:8px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;display:block;color:inherit;text-decoration:none}.card>:last-child{margin-bottom:0}.card ul{padding-left:1.2rem;margin:0 0 .75rem}.hero{display:flex;flex-direction:column;gap:6px;border-width:2px}.hero.status-in-window{border-color:var(--good)}.hero.status-past{border-color:var(--warn)}.hero.asleep{background:var(--accent-soft)}.eyebrow{text-transform:uppercase;letter-spacing:.06em;font-size:.78rem;font-weight:600;color:var(--muted);margin:0}.nowrap{white-space:nowrap}.big{font-size:clamp(1.7rem,7.5vw,2.2rem);font-weight:650;line-height:1.1;margin:0;font-variant-numeric:tabular-nums}.status{font-weight:600}.status-in-window .status{color:var(--good)}.status-past .status{color:var(--warn)}.note{font-size:.92rem;border-left:3px solid var(--line);padding-left:10px;color:var(--muted)}.lead{font-size:1.05rem}.muted{color:var(--muted)}.small{font-size:.85rem}.error{color:var(--bad)}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer;border-radius:10px;padding:10px 16px;border:1px solid transparent;background:none;min-height:44px}button:disabled{opacity:.5;cursor:default}button.primary{background:var(--accent);color:var(--accent-ink);font-weight:600}button.secondary{border-color:var(--line);background:var(--surface)}button.danger{background:var(--bad);color:#fff;font-weight:600}button.link{color:var(--accent);padding:6px 0;min-height:0;text-align:left}button.link.danger-link{color:var(--bad)}button.icon{border-color:var(--line);padding:4px 12px;min-height:36px}.big-button{font-size:1.1rem;padding:14px 24px}.link{font-size:.95rem}input,select,textarea{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--surface);min-height:44px;min-width:0;max-width:100%}input[type=checkbox]{width:20px;height:20px;min-height:0;accent-color:var(--accent)}.field{display:flex;flex-direction:column;gap:4px}.field-label{font-weight:600;font-size:.92rem}.field-hint{font-size:.85rem;color:var(--muted)}.check{display:flex;align-items:center;gap:10px}.segmented{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}.segmented button{border-radius:0;min-height:40px;padding:6px 16px}.segmented button.on{background:var(--accent-soft);font-weight:600}.tier{display:inline-block;font-size:.75rem;font-weight:600;padding:2px 8px;border-radius:999px;border:1px solid currentColor;white-space:nowrap}.tier-1{color:var(--t1)}.tier-2{color:var(--t2)}.tier-3{color:var(--t3)}.tier-general{color:var(--muted)}.basis summary{cursor:pointer;list-style:none;font-size:.9rem}.basis summary::-webkit-details-marker{display:none}.sources{font-size:.88rem;padding-left:1.1rem;margin:8px 0 0}.safe-sleep{display:block;padding:10px 14px;border-radius:var(--radius);background:var(--accent-soft);color:var(--ink);text-decoration:none;font-size:.92rem}.sleep-list{list-style:none;padding:0;margin:0}.sleep-list li+li{border-top:1px solid var(--line)}.sleep-list a{display:grid;grid-template-columns:12px 56px 1fr auto;align-items:center;gap:10px;padding:10px 0;color:inherit;text-decoration:none;font-variant-numeric:tabular-nums}.dot{width:10px;height:10px;border-radius:50%}.dot-nap{background:var(--nap)}.dot-night{background:var(--night)}.sleep-kind{font-weight:600}.chart{width:100%;height:auto;display:block}.chart .band{fill:var(--band)}.chart .band-soft{fill:var(--band);stroke:var(--line);stroke-dasharray:4 4}.chart .grid{stroke:var(--line)}.chart .axis{fill:var(--muted);font-size:11px}.chart .bar-night{fill:var(--night)}.chart .bar-nap{fill:var(--nap)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:12px 0 8px}.stats dt{font-size:.8rem;color:var(--muted)}.stats dd{margin:0;font-size:1.25rem;font-weight:650;font-variant-numeric:tabular-nums}.insight{border-left-width:4px}.insight.sev-info{border-left-color:var(--accent)}.insight.sev-watch{border-left-color:var(--warn)}.insight.sev-talk-to-doctor{border-left-color:var(--bad)}.article-link h2{margin:0}.article-link p{margin:6px 0 0}.prose table{border-collapse:collapse;width:100%;margin:8px 0 12px;font-size:.95rem}.prose th,.prose td{text-align:left;border-bottom:1px solid var(--line);padding:6px 8px 6px 0}.prose ul{padding-left:1.2rem}.prose li{margin-bottom:4px}.tabs{position:fixed;left:0;right:0;bottom:0;display:flex;justify-content:center;background:var(--surface);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.tabs a{flex:1;max-width:112px;text-align:center;padding:14px 4px;color:var(--muted);text-decoration:none;font-size:.88rem;font-weight:600}.tabs a[aria-current=page]{color:var(--accent);box-shadow:inset 0 3px 0 var(--accent)}.banner{background:var(--accent-soft);text-align:center;padding:8px 16px;font-size:.9rem}.toast{position:fixed;top:12px;left:50%;transform:translate(-50%);background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:10px;z-index:10;max-width:calc(100% - 32px)}