:root{--bg: #f5f6f8;--panel: #ffffff;--border: #e8eaf0;--text: #1f2329;--muted: #8a8f99;--accent: #4f46e5}*{box-sizing:border-box}html,body,#app{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}.app-shell{max-width:960px;margin:0 auto;padding:24px 20px 48px}.app-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.app-header h1{font-size:22px;margin:0}.app-header .brand{display:flex;align-items:center;gap:8px;font-size:22px}.brand-logo{width:30px;height:30px;object-fit:contain}.app-header .user-line{color:var(--muted);font-size:13px;display:flex;gap:12px;align-items:center}.workspace{display:flex;gap:16px;align-items:flex-start}.side{width:210px;flex-shrink:0;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:10px}.main{flex:1;min-width:0}.filter-item{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:8px;cursor:pointer;font-size:14px}.filter-item.active{background:#eef0ff;color:var(--accent);font-weight:600}.filter-item:hover:not(.active){background:#f2f3f5}.filter-item .count{margin-left:auto;color:var(--muted);font-size:12px}.filter-sep{height:1px;background:var(--border);margin:8px 4px}.todo-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:14px 16px;margin-bottom:10px;display:flex;align-items:flex-start;gap:12px}.todo-card.done .todo-title{text-decoration:line-through;color:var(--muted)}.todo-body{flex:1;min-width:0;cursor:pointer}.todo-title{font-size:15px;word-break:break-word}.todo-meta{display:flex;gap:10px;margin-top:6px;font-size:12px;color:var(--muted);flex-wrap:wrap}.cat-dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:4px}.todo-actions{display:flex;gap:4px}.date-group-title{font-size:13px;color:var(--muted);margin:14px 4px 8px;font-weight:600}.quick-add{margin-bottom:14px}.auth-wrap{display:flex;justify-content:center;padding-top:8vh}.auth-card{width:360px;background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:28px}.auth-card h2{margin:0 0 4px}.auth-card .sub{color:var(--muted);font-size:13px;margin-bottom:20px}.auth-card .field{margin-bottom:14px}.auth-switch{text-align:center;margin-top:14px;font-size:13px;color:var(--muted)}.auth-switch a{color:var(--accent);cursor:pointer}