:root{--bg:#f4f6f2;--card:#fff;--text:#1f2933;--muted:#5f6b7a;--border:#d9dee3;--green:#2f855a;--green-dark:#276749;--green-light:#c6f0d6;--green-pale:#e8f6ee;--gray-line:#9aa5b1;--danger:#b45309;--radius:14px;--tap:52px;--tabbar-height:64px}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;margin:0;padding:0;font-family:system-ui,-apple-system,Hiragino Sans,Hiragino Kaku Gothic ProN,Noto Sans JP,Yu Gothic UI,Meiryo,sans-serif;font-size:16px;line-height:1.5}button,input{font:inherit;color:inherit}button{cursor:pointer}a{color:var(--green-dark)}.app{flex-direction:column;min-height:100dvh;display:flex}.app-header{padding:calc(env(safe-area-inset-top) + 10px) 16px 8px;text-align:center}.app-header h1{color:var(--muted);letter-spacing:.04em;margin:0;font-size:1rem;font-weight:600}.app-main{flex:1;width:100%;max-width:560px;margin:0 auto;padding:0 16px 8px}.app-footer{max-width:560px;padding:8px 16px calc(var(--tabbar-height) + env(safe-area-inset-bottom) + 12px);color:var(--muted);text-align:center;margin:0 auto;font-size:.78rem}.tabbar{height:calc(var(--tabbar-height) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--card);border-top:1px solid var(--border);z-index:10;display:flex;position:fixed;bottom:0;left:0;right:0}.tabbar a{color:var(--muted);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2px;font-size:.8rem;font-weight:600;text-decoration:none;display:flex}.tabbar a[aria-current=page]{color:var(--green-dark)}.tabbar a svg{width:24px;height:24px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;padding:16px}.section-title{color:var(--text);margin:0 0 10px;font-size:.95rem;font-weight:700}.hint{color:var(--muted);margin:8px 0 0;font-size:.85rem}.date-nav{justify-content:space-between;align-items:center;gap:8px;margin:6px 0 14px;display:flex}.date-nav .date-label{text-align:center;flex:1;font-size:1.15rem;font-weight:700}.date-nav .date-status{color:var(--muted);font-size:.78rem;font-weight:500;display:block}.icon-btn{width:var(--tap);height:var(--tap);border:1px solid var(--border);background:var(--card);border-radius:50%;justify-content:center;align-items:center;font-size:1.4rem;line-height:1;display:inline-flex}.icon-btn:disabled{opacity:.3;cursor:default}.link-btn{color:var(--green-dark);background:0 0;border:none;min-height:44px;padding:4px 8px;font-weight:600;text-decoration:underline}.weight-row{justify-content:center;align-items:center;gap:10px;display:flex}.weight-input{text-align:center;border:2px solid var(--border);appearance:textfield;background:#fff;border-radius:12px;width:9rem;height:60px;font-size:1.9rem;font-weight:700}.weight-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.weight-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.weight-input:focus{border-color:var(--green);outline:none}.weight-input[aria-invalid=true]{border-color:var(--danger)}.weight-unit{color:var(--muted);font-size:1.1rem;font-weight:600}.field-error{text-align:center;color:var(--danger);margin:8px 0 0;font-size:.85rem}.toggle-group{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.toggle{min-height:var(--tap);border:2px solid var(--border);color:var(--text);background:#fff;border-radius:12px;padding:8px 4px;font-size:.95rem;font-weight:600}.toggle[aria-pressed=true]{background:var(--green);border-color:var(--green);color:#fff}.toggle:disabled{opacity:.5}.save-btn{background:var(--green);color:#fff;border:none;border-radius:14px;width:100%;min-height:56px;font-size:1.1rem;font-weight:700}.save-btn:disabled{opacity:.6}.toast{left:50%;bottom:calc(var(--tabbar-height) + env(safe-area-inset-bottom) + 20px);background:var(--text);color:#fff;z-index:20;border-radius:999px;padding:10px 18px;font-size:.95rem;position:fixed;transform:translate(-50%);box-shadow:0 4px 16px #0003}.summary-grid{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:14px;display:grid}.summary-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);text-align:center;padding:14px 12px}.summary-card .label{color:var(--muted);font-size:.8rem}.summary-card .value{color:var(--green-dark);font-size:2rem;font-weight:700;line-height:1.2}.summary-card .unit{color:var(--muted);margin-left:2px;font-size:.9rem}.range-tabs{border:1px solid var(--border);border-radius:999px;margin-bottom:8px;display:inline-flex;overflow:hidden}.range-tabs button{min-height:36px;color:var(--muted);background:0 0;border:none;padding:6px 14px;font-size:.85rem;font-weight:600}.range-tabs button[aria-pressed=true]{background:var(--green-pale);color:var(--green-dark)}.chart-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;display:flex}.chart-legend{color:var(--muted);gap:14px;font-size:.8rem;display:flex}.chart-legend span:before{content:"";vertical-align:middle;border-top:3px solid var(--green);width:18px;height:0;margin-right:6px;display:inline-block}.chart-legend span.raw:before{border-top:1.5px solid var(--gray-line)}.weight-chart{width:100%;height:auto;display:block}.empty{text-align:center;color:var(--muted);padding:24px 0;font-size:.9rem}.heatmap{grid-template-columns:2.4rem repeat(14,1fr);align-items:center;gap:4px;display:grid}.heatmap .row-label{color:var(--muted);font-size:.8rem}.heatmap .cell{aspect-ratio:1;border:1px solid var(--border);background:#fff;border-radius:4px}.heatmap .cell[data-level="1"]{background:var(--green-light);border-color:var(--green-light)}.heatmap .cell[data-level="2"]{background:var(--green);border-color:var(--green)}.heatmap .day-label{color:var(--muted);text-align:center;font-size:.65rem;line-height:1.1}.heatmap .day-label.today{color:var(--green-dark);font-weight:700}.heatmap-legend{color:var(--muted);gap:12px;margin-top:8px;font-size:.75rem;display:flex}.heatmap-legend i{border:1px solid var(--border);vertical-align:middle;background:#fff;border-radius:3px;width:12px;height:12px;margin-right:4px;display:inline-block}.heatmap-legend i[data-level="1"]{background:var(--green-light);border-color:var(--green-light)}.heatmap-legend i[data-level="2"]{background:var(--green);border-color:var(--green)}.notice-list{margin:0;padding-left:1.2em}.notice-list li{margin-bottom:10px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.encouragement{position:relative}.encouragement.highlight{background:var(--green-pale);border-color:var(--green-light)}.encouragement-body{align-items:center;gap:14px;display:flex}.encouragement-text{flex:1;min-width:0}.encouragement-message{margin:0;font-size:1rem;font-weight:600;line-height:1.5}.encouragement-sub{color:var(--muted);margin:6px 0 0;font-size:.85rem}.encouragement-close{width:40px;height:40px;color:var(--muted);background:0 0;border:none;font-size:1.4rem;line-height:1;position:absolute;top:6px;right:6px}.penguin{flex-shrink:0}.data-actions{grid-template-columns:1fr 1fr;gap:10px;margin-top:8px;display:grid}.secondary-btn{min-height:var(--tap);border:2px solid var(--green);color:var(--green-dark);background:#fff;border-radius:12px;font-weight:700}.secondary-btn:disabled{opacity:.5}.save-status{text-align:center;min-height:1.4em;color:var(--muted);margin:4px 0 8px;font-size:.85rem}.weight-input::placeholder{color:#b8c0cc;font-size:1.15rem;font-weight:500}