:root{color-scheme:light;--bg: #f3f4f6;--card: #ffffff;--text: #111827;--muted: #6b7280;--line: #e5e7eb;--accent: #2463eb}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.45 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;-webkit-tap-highlight-color:transparent}.shell{max-width:480px;margin:0 auto;padding:16px 16px 96px;min-height:100dvh}.shell.center{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding-top:48px;gap:8px}h1{font-size:1.35rem;margin:0 0 4px}h2{font-size:1.02rem;margin:0}.muted{color:var(--muted);font-size:.9rem;margin:0}.error{background:#fee2e2;color:#991b1b;border-radius:10px;padding:8px 12px;font-size:.9rem}.head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.ring{position:relative;width:64px;height:64px;flex:none}.ring svg{width:100%;height:100%}.ring span{position:absolute;inset:0;display:grid;place-items:center;font-size:.82rem;font-weight:600}.list{display:flex;flex-direction:column;gap:12px}.empty{text-align:center;padding:24px 8px}.habit{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:14px;padding:12px;display:flex;flex-direction:column;gap:10px;box-shadow:0 1px 2px #0000000a}.habit-top{display:flex;align-items:flex-start;justify-content:space-between;gap:8px}.streak{margin:0;color:var(--muted);font-size:.86rem}.grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}.cell{aspect-ratio:1;border-radius:8px;border:1px solid var(--line);background:#f9fafb;font-size:.8rem;color:#fff;cursor:pointer;padding:0}.cell.on{color:#fff;border-color:transparent}.cell.today{outline:2px solid var(--accent);outline-offset:-2px}.check{border:1px solid var(--line);background:#f9fafb;border-radius:10px;padding:10px;font-size:.92rem;cursor:pointer;color:var(--text)}.check.done{background:#ecfdf5;border-color:#10b981;color:#047857;font-weight:600}.icon-btn{border:none;background:none;cursor:pointer;font-size:1rem;opacity:.6;padding:4px}.icon-btn:hover{opacity:1}.primary{background:var(--accent);color:#fff;border:none;border-radius:12px;padding:12px 16px;font-size:.95rem;font-weight:600;cursor:pointer}.primary:disabled{opacity:.5}.fab{position:fixed;left:50%;transform:translate(-50%);bottom:16px;width:min(448px,calc(100% - 32px));box-shadow:0 4px 14px #2463eb59}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:12px}.form label,.form fieldset{display:flex;flex-direction:column;gap:6px;border:none;padding:0;margin:0;font-size:.86rem;color:var(--muted)}.form fieldset legend{padding:0}.form input{border:1px solid var(--line);border-radius:10px;padding:10px;font:inherit;color:var(--text)}.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.pick{width:38px;height:38px;border-radius:10px;border:2px solid var(--line);background:#f9fafb;font-size:1.05rem;cursor:pointer;display:grid;place-items:center;padding:0}.pick.sel{border-color:var(--accent);background:#eff6ff}.dot{width:30px;height:30px;border-radius:50%}button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}