*{box-sizing:border-box;margin:0;padding:0}:root{--bg:#f5f5f0;--card:#ffffff;--primary:#2563eb;--primary-light:#eff6ff;--text:#1e1e1e;--text-muted:#6b7280;--border:#e5e7eb;--checked-text:#9ca3af;--success:#16a34a;--radius:12px;--shadow:0 1px 3px rgba(0,0,0,0.08)}body{font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;font-size:16px;line-height:1.5}.app-header{background:var(--primary);color:#fff;padding:16px 20px;position:-webkit-sticky;position:sticky;top:0;z-index:10;box-shadow:0 2px 8px rgba(0,0,0,.15)}.app-header h1{font-size:18px;font-weight:700;letter-spacing:.02em}.progress-bar-wrap{margin-top:10px;background:rgba(255,255,255,.25);border-radius:999px;height:6px;overflow:hidden}.progress-bar{height:100%;background:#fff;border-radius:999px;transition:width .3s ease}.progress-text{margin-top:6px;font-size:13px;opacity:.9}.main{max-width:640px;margin:0 auto;padding:16px 12px 32px}.reset-btn{display:block;width:100%;margin-bottom:16px;padding:12px;background:#fff;border:1.5px solid var(--border);border-radius:var(--radius);font-size:14px;color:var(--text-muted);cursor:pointer;text-align:center;transition:background .15s,border-color .15s}.reset-btn:hover{background:#fef2f2;border-color:#fca5a5;color:#dc2626}.category{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden}.category-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;border-bottom:1px solid var(--border);background:var(--card);transition:background .15s}.category-header:hover{background:#fafafa}.category-header.all-done{background:#f0fdf4}.category-title{font-size:15px;font-weight:700;display:flex;align-items:center;gap:8px}.category-badge{font-size:12px;font-weight:600;color:var(--text-muted);background:var(--bg);padding:2px 8px;border-radius:999px}.category-badge.done{background:#dcfce7;color:var(--success)}.chevron{font-size:12px;color:var(--text-muted);transition:transform .2s}.chevron.open{transform:rotate(180deg)}.item-list{list-style:none}.item{display:flex;align-items:center;padding:13px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .1s;gap:12px;-webkit-tap-highlight-color:transparent}.item:last-child{border-bottom:none}.item:active{background:#f9fafb}.checkbox{width:22px;height:22px;border:2px solid var(--border);border-radius:6px;flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:border-color .15s,background .15s;font-size:13px;color:#fff}.item.checked .checkbox{background:var(--primary);border-color:var(--primary)}.item-label{font-size:15px;flex:1 1;transition:color .15s}.item.checked .item-label{color:var(--checked-text);text-decoration:line-through;-webkit-text-decoration-color:var(--checked-text);text-decoration-color:var(--checked-text)}.all-complete-banner{text-align:center;padding:24px 16px;background:#f0fdf4;border:1.5px solid #86efac;border-radius:var(--radius);color:var(--success);font-size:18px;font-weight:700;margin-top:8px}