:root{--bg: #f4f6f8;--card: #ffffff;--line: #e0e5ea;--text: #22282e;--muted: #7b848d;--accent: #e2612b;--accent-dark: #c74f1e;--blue: #2b6cb0;--neg: #d92d20;font-family:system-ui,-apple-system,Segoe UI,Roboto,Hiragino Sans,Noto Sans JP,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);line-height:1.6;-webkit-tap-highlight-color:transparent}#app{max-width:560px;margin:0 auto;padding:12px 14px 84px}h1{font-size:1.25rem;margin:6px 0 0}h1 .brand{font-size:.75rem;color:var(--muted);font-weight:400;letter-spacing:.04em}.sub{color:var(--muted);font-size:.78rem;margin:0 0 14px}h2.group-h{font-size:.85rem;color:var(--muted);margin:18px 0 6px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin:10px 0}button,.file-btn{font:inherit;border:none;border-radius:12px;padding:10px 16px;cursor:pointer;touch-action:manipulation}button.primary{background:var(--accent);color:#fff;font-weight:700;width:100%;margin:8px 0}button.primary:active{background:var(--accent-dark)}button.big{font-size:1.15rem;padding:16px}button.secondary,.file-btn{background:#eef1f4;color:var(--text);font-weight:600}button.ghost{background:transparent;color:var(--muted)}button.small{padding:4px 10px;font-size:.85rem}button.danger,.danger{color:var(--neg)}button.finish{background:var(--blue);color:#fff;font-weight:700}.rec{border-left:5px solid var(--accent)}.rec-rest{border-left-color:var(--blue)}.rec-title{font-size:1.05rem}.rec-reason{color:var(--muted);font-size:.88rem}.active-head{display:flex;justify-content:space-between;align-items:center;border-left:5px solid var(--neg)}.elapsed{color:var(--muted);font-size:.85rem;margin-left:6px}.exercise .ex-head{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}.prev{color:var(--muted);font-size:.8rem}.badge{display:inline-block;background:#eef1f4;color:var(--muted);border-radius:6px;font-size:.7rem;padding:1px 6px;vertical-align:1px}.set-row{display:flex;align-items:center;gap:6px;margin:6px 0}.set-no{width:22px;height:22px;border-radius:50%;background:#eef1f4;color:var(--muted);font-size:.78rem;display:inline-flex;align-items:center;justify-content:center;flex:none}.set-row input{font:inherit;font-size:1.05rem;width:82px;padding:8px 10px;border:1px solid var(--line);border-radius:10px;text-align:right}.set-row .u{color:var(--muted);font-size:.8rem}.picker{padding:10px 12px}.picker-group{font-size:.8rem;color:var(--muted);margin:8px 2px 4px}button.pick{display:block;width:100%;text-align:left;background:#f7f9fa;border:1px solid var(--line);margin:4px 0;padding:10px 12px}button.pick:active{background:#fdf0e9}.stats{display:flex}.stat{flex:1;text-align:center}.stat .num{font-size:1.35rem;font-weight:700}.stat .lbl{font-size:.72rem;color:var(--muted)}.history{cursor:pointer}.hist-head{display:flex;justify-content:space-between}.hist-summary{color:var(--muted);font-size:.85rem}.hist-detail{border-top:1px solid var(--line);margin-top:8px;padding-top:8px}.hist-ex{display:flex;justify-content:space-between;gap:12px;font-size:.9rem}.hist-ex span{color:var(--muted);text-align:right}.muted{color:var(--muted)}.ex-item{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;padding:10px 14px}.row-btns{display:flex;gap:4px}.ex-form{width:100%}.ex-form label{display:block;margin:8px 0;font-size:.9rem}.ex-form input,.ex-form select{font:inherit;width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:#fff}.io{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.io>b{width:100%}.toggle{display:flex;align-items:center;gap:8px}.toggle input{width:20px;height:20px}.hint{color:var(--muted);font-size:.8rem}.tabbar{position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--card);border-top:1px solid var(--line);padding:4px max(8px,env(safe-area-inset-left)) max(8px,env(safe-area-inset-bottom))}.tab{flex:1;background:transparent;color:var(--muted);font-size:.82rem;padding:8px 0;border-radius:10px}.tab.active{color:var(--accent);font-weight:700;background:#fdf0e9}