:root{--primary: #6366f1;--primary-soft: rgba(99, 102, 241, .1);--success: #10b981;--danger: #ef4444;--text-main: #1f2937;--text-muted: #6b7280;--bg-app: #f8fafc;--border-color: #e2e8f0;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1)}.app-container{min-height:100vh;background-color:var(--bg-app);display:flex;justify-content:center;padding:60px 20px;font-family:-apple-system,Inter,PingFang SC,sans-serif}.memo-card{width:100%;max-width:440px;background:#fff;border-radius:20px;box-shadow:var(--shadow-md);border:1px solid var(--border-color);display:flex;flex-direction:column;height:fit-content;max-height:80vh}.app-header{padding:24px 24px 16px;display:flex;justify-content:space-between;align-items:center}.brand{display:flex;align-items:center;gap:10px}.icon-brand{color:var(--primary)}.brand h1{font-size:1.1rem;font-weight:700;margin:0;color:var(--text-main)}.sync-status{display:flex;align-items:center;gap:6px;padding:4px 12px;background:#f1f5f9;border-radius:100px;font-size:11px;color:var(--text-muted);font-weight:500}.sync-status.syncing{color:var(--primary);background:var(--primary-soft)}.spin{animation:rotate 1.5s linear infinite}@keyframes rotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.input-section{padding:0 24px 20px}.input-group{display:flex;gap:8px;background:#f8fafc;padding:6px 6px 6px 16px;border-radius:12px;border:1px solid var(--border-color);transition:all .2s}.input-group:focus-within{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px var(--primary-soft)}.input-group input{flex:1;border:none;outline:none;font-size:14px;background:transparent;color:var(--text-main)}.add-btn{background:var(--primary);color:#fff;border:none;width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer}.list-scroll-area{padding:0 12px 20px;overflow-y:auto;min-height:160px}.memo-item{display:flex;align-items:center;padding:12px;margin-bottom:4px;border-radius:10px;transition:background .2s}.memo-item:hover{background:#f8fafc}.status-toggle{background:none;border:none;padding:0;margin-right:12px;cursor:pointer;display:flex;color:#cbd5e1;transition:color .2s}.status-toggle:hover{color:var(--primary)}.icon-checked{color:var(--success)}.memo-content{flex:1;font-size:14px;color:var(--text-main);line-height:1.5;transition:all .3s}.is-done .memo-content{text-decoration:line-through;color:var(--text-muted);opacity:.6}.action-delete{background:none;border:none;color:#cbd5e1;cursor:pointer;padding:6px;border-radius:6px;opacity:0;transition:all .2s}.memo-item:hover .action-delete{opacity:1}.action-delete:hover{color:var(--danger);background:#fee2e2}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 0;color:var(--text-muted)}.empty-icon{width:40px;height:40px;margin-bottom:12px;opacity:.3;color:var(--primary)}.loading-placeholder{display:flex;flex-direction:column;align-items:center;padding:40px;color:var(--text-muted);font-size:13px;gap:10px}.app-footer{padding:16px 24px;border-top:1px solid var(--border-color);background:#fafafa;border-bottom-left-radius:20px;border-bottom-right-radius:20px}.stats{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-muted);font-weight:500}.dot{opacity:.5}.list-scroll-area::-webkit-scrollbar{width:4px}.list-scroll-area::-webkit-scrollbar-thumb{background:#e2e8f0;border-radius:10px}