:root{--bg:#f6f4ef;--card:#fff;--ink:#23302f;--mute:#667472;--brand:#2f6f6a;--brand2:#e8f1ef;--warm:#d9822b;--line:#e3e0d8;--ok:#3a8a5a}
@media (prefers-color-scheme:dark){:root{--bg:#161c1b;--card:#1f2827;--ink:#e8efee;--mute:#9aaeab;--brand:#5cb3aa;--brand2:#25403d;--warm:#f0a35a;--line:#33403e;--ok:#6fcf97}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:18px/1.55 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;padding-bottom:84px}
main{max-width:640px;margin:0 auto;padding:16px}
h1{font-size:1.5rem;margin:.3rem 0}h2{font-size:1.25rem;margin:.2rem 0 .5rem}h3{font-size:1rem;margin:1rem 0 .3rem;color:var(--mute);text-transform:uppercase;letter-spacing:.04em}
p{margin:.5rem 0}.mute{color:var(--mute);font-size:.9rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;margin:14px 0}
.soft{background:var(--brand2);border-color:transparent}
button,.btn{font:inherit;border:0;border-radius:12px;padding:12px 18px;background:var(--brand);color:#fff;cursor:pointer;min-height:48px}
button.ghost{background:transparent;color:var(--brand);border:1.5px solid var(--brand)}
button.warm{background:var(--warm);color:#1b1b1b}
button:disabled{opacity:.5}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.row.sp{justify-content:space-between}
textarea,input[type=text]{width:100%;font:inherit;padding:12px;border-radius:12px;border:1.5px solid var(--line);background:var(--bg);color:var(--ink);min-height:48px}
input[type=range]{width:100%;accent-color:var(--brand)}
.frame{padding:10px 12px;border-left:4px solid var(--brand);background:var(--brand2);border-radius:8px;margin:8px 0;display:flex;justify-content:space-between;gap:8px;align-items:center}
.frame button{padding:6px 12px;min-height:36px}
.dots{display:flex;gap:6px;margin:6px 0 12px}.dots i{flex:1;height:6px;border-radius:3px;background:var(--line)}.dots i.on{background:var(--brand)}
.big{font-size:2.4rem;font-weight:700;text-align:center;font-variant-numeric:tabular-nums}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;text-align:center}.stats b{display:block;font-size:1.5rem}
.breath{width:150px;height:150px;border-radius:50%;background:var(--brand2);border:3px solid var(--brand);margin:16px auto;display:flex;align-items:center;justify-content:center;text-align:center;transition:transform 4s ease-in-out}
.breath.in{transform:scale(1.35)}.breath.out{transform:scale(.85);transition-duration:6s}
#nav{position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--card);border-top:1px solid var(--line);padding:6px env(safe-area-inset-right) calc(6px + env(safe-area-inset-bottom)) env(safe-area-inset-left)}
#nav button{flex:1;background:transparent;color:var(--mute);border-radius:0;font-size:.85rem}#nav button.on{color:var(--brand);font-weight:700}
.bar{display:flex;align-items:flex-end;gap:6px;height:110px;margin-top:8px}.bar div{flex:1;background:var(--brand);border-radius:4px 4px 0 0;min-height:4px;position:relative}.bar div.b{background:var(--line)}
audio{width:100%;margin-top:6px}
.chk label{display:flex;gap:10px;align-items:flex-start;margin:8px 0}.chk input{width:22px;height:22px;margin-top:4px;accent-color:var(--brand)}
.pill{display:inline-block;padding:2px 10px;border-radius:99px;background:var(--brand2);color:var(--brand);font-size:.85rem}
pre{white-space:pre-wrap;background:var(--bg);padding:12px;border-radius:10px;font:.85rem/1.4 ui-monospace,monospace;max-height:220px;overflow:auto}