.app{max-width:440px;margin:0 auto;padding:calc(20px + env(safe-area-inset-top)) 16px calc(48px + env(safe-area-inset-bottom))}.header{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.brand{display:flex;align-items:center;gap:10px}.logo{width:40px;height:40px}.header h1{margin:0;font-size:20px;letter-spacing:.02em}.switcher{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:14px}.switcher button{border:1px solid var(--line);background:var(--card);border-radius:16px;padding:14px 10px;font-size:16px;font-weight:700}.switcher button.active{background:var(--ink);color:#fff;border-color:var(--ink)}.ios-hint{background:var(--ink);color:#fff;border-radius:16px;padding:14px 16px;margin-bottom:14px;font-size:14px;line-height:1.6}.ios-hint p{margin:0 0 10px}.share-card{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:18px;margin-bottom:14px;text-align:center}.share-card p{margin:0 0 12px;font-size:14px;line-height:1.6}.share-card img{width:220px;height:220px;background:#fff;border-radius:12px}.share-url{display:block;margin:12px 0;word-break:break-all;font-size:13px;color:var(--muted)}.share-card .copy{width:100%;border:0;border-radius:12px;background:var(--ink);color:#fff;padding:12px;font-size:16px;font-weight:700}.ios-hint-main{display:block;width:100%;margin:0 0 8px;border:0;border-radius:12px;background:#fff;color:var(--ink);padding:12px;font-size:16px;font-weight:700}.ios-hint button:not(.ios-hint-main){display:block;margin-top:8px;border:0;background:transparent;color:#f4efe6;padding:0;font-size:13px}.rename{display:block;margin:-6px auto 14px;border:0;background:transparent;color:var(--muted);font-size:12px;padding:4px 8px}.header p{margin:2px 0 0;color:var(--muted);font-size:12px}.export{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:8px 12px;font-size:12px}.hero,.card{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:18px;margin-bottom:14px}.hero-label{color:var(--muted);font-size:13px}.hero-weight{display:flex;align-items:baseline;gap:6px;margin:4px 0 8px}.hero-weight strong{font-size:56px;line-height:1;letter-spacing:-.04em}.hero-weight span{font-size:20px;color:var(--muted)}.delta{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700}.delta.up{color:var(--up)}.delta.down{color:var(--down)}.delta.flat{color:var(--flat)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}.form-row.weight-row{grid-template-columns:1fr}label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}input[type=date],input[type=time],input[type=number],textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px;color:var(--ink)}.weight-pad{display:flex;align-items:center;gap:10px}.weight-pad input{text-align:center;font-size:28px;font-weight:900;padding:10px 8px}.time-row{display:flex;gap:8px}.now{flex:0 0 56px;border:1px solid var(--line);background:var(--ink);color:#fff;border-radius:12px;font-size:13px;font-weight:700}.step{width:52px;height:52px;border:0;border-radius:16px;background:var(--ink);color:#fff;font-size:28px;line-height:1;flex:0 0 52px}textarea{min-height:72px;resize:vertical}.save{width:100%;margin-top:12px;border:0;border-radius:16px;background:var(--ink);color:#fff;padding:16px;font-size:18px;font-weight:700}.grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.stat{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px}.stat small{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}.stat b{font-size:22px}.insight{margin-top:12px;font-size:14px;line-height:1.7}.periods{display:flex;gap:8px;margin-bottom:12px}.periods button{flex:1;border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 0;font-size:13px}.periods button.active{background:var(--ink);color:#fff;border-color:var(--ink)}.chart-wrap{overflow:hidden}.chart{width:100%;height:220px;display:block}.axis{fill:var(--muted);font-size:10px}.line{fill:none;stroke:var(--ink);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.avg{fill:none;stroke:#b08968;stroke-width:2;stroke-dasharray:4 4}.dot{fill:var(--ink)}.empty{color:var(--muted);text-align:center;padding:28px 8px}.history-item{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}.history-item:last-child{border-bottom:0}.history-item button{border:0;background:transparent;color:var(--muted);font-size:12px}.memo{color:var(--muted);font-size:12px;margin-top:2px}.hint{margin-top:18px;color:var(--muted);font-size:12px;line-height:1.6}:root{--bg: #f4efe6;--ink: #1a1714;--muted: #6b635a;--card: #fffdf8;--line: #d8d0c4;--up: #b42318;--down: #1f6b4a;--flat: #6b635a;--shadow: 0 10px 30px rgba(26, 23, 20, .08)}*{box-sizing:border-box}html{font-size:16px}html,body,#root{min-height:100%;min-height:100dvh}body{margin:0;background:var(--bg);color:var(--ink);font-family:Zen Maru Gothic,Hiragino Sans,sans-serif;-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%}button,input,textarea,select{font:inherit;font-size:16px}button{cursor:pointer}