:root{--bg:#f6f7f9;--card:#fff;--line:#e6e8ec;--text:#1f2430;--muted:#6b7280;--primary:#2f6fed;--primary-soft:#eaf0fe;--danger:#dc2626;--danger-soft:#fdecec;--warn:#b45309;--warn-soft:#fef3e2;--ok:#15803d;--radius:12px;--shadow:0 1px 2px #1018280f, 0 8px 24px #1018280d}*{box-sizing:border-box}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans CJK SC,sans-serif;font-size:15px;line-height:1.55}button{font:inherit;cursor:pointer}input,textarea,select{font:inherit;color:inherit}.field{flex-direction:column;gap:6px;display:flex}.field>span{color:var(--muted);font-size:13px}input,textarea,select{border:1px solid var(--line);background:#fff;border-radius:9px;outline:none;width:100%;padding:9px 11px;transition:border-color .15s,box-shadow .15s}input:focus,textarea:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}textarea{resize:vertical}.primary,.ghost,.danger{border:1px solid #0000;border-radius:9px;padding:9px 14px;transition:background .15s,color .15s,border-color .15s}.primary{background:var(--primary);color:#fff}.primary:hover:not(:disabled){background:#245bd0}.primary:disabled{opacity:.5;cursor:not-allowed}.ghost{color:var(--muted);border-color:var(--line);background:0 0}.ghost:hover:not(:disabled){color:var(--text);background:#f2f4f7}.ghost:disabled{opacity:.45;cursor:not-allowed}.danger{background:var(--danger);color:#fff}.danger:hover{background:#b91c1c}.link{color:var(--primary);background:0 0;border:none;padding:0 4px}.auth{justify-content:center;align-items:center;min-height:100%;padding:24px;display:flex}.auth-card{background:var(--card);border:1px solid var(--line);width:100%;max-width:360px;box-shadow:var(--shadow);border-radius:16px;flex-direction:column;gap:16px;padding:28px 24px;display:flex}.auth-head{text-align:center;flex-direction:column;align-items:center;gap:4px;display:flex}.auth-head h1{margin:6px 0 0;font-size:20px}.auth-head p{color:var(--muted);margin:0;font-size:13px}.auth-error{background:var(--danger-soft);color:var(--danger);border-radius:8px;margin:0;padding:8px 10px;font-size:13px}.auth-switch{text-align:center;color:var(--muted);margin:0;font-size:13px}.brand-mark{background:var(--primary);color:#fff;border-radius:10px;justify-content:center;align-items:center;width:34px;height:34px;font-size:18px;font-weight:700;display:inline-flex}.app{max-width:760px;margin:0 auto;padding:20px 16px 64px}.app-header{justify-content:space-between;align-items:center;gap:12px;padding:4px 0 18px;display:flex}.brand{align-items:center;gap:12px;display:flex}.brand h1{margin:0;font-size:19px}.brand-sub{color:var(--muted);margin:0;font-size:13px}.header-actions{gap:8px;display:flex}.stats{grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px;display:grid}.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);flex-direction:column;padding:10px 12px;display:flex}.stat-value{font-size:20px;font-weight:650}.stat-label{color:var(--muted);font-size:12px}.stat-overdue .stat-value{color:var(--danger)}.stat-done .stat-value{color:var(--ok)}.stat-active .stat-value{color:var(--primary)}.composer{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);flex-direction:column;gap:10px;padding:12px;display:flex}.composer-title{border:none;padding:4px 2px;font-size:16px}.composer-title:focus{box-shadow:none;border-color:#0000}.composer-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.composer-date{flex:none;width:auto}.segmented{border:1px solid var(--line);border-radius:9px;display:inline-flex;overflow:hidden}.seg{color:var(--muted);background:#fff;border:none;padding:7px 12px}.seg+.seg{border-left:1px solid var(--line)}.seg.is-on{background:var(--primary-soft);color:var(--primary);font-weight:600}.toolbar{flex-wrap:wrap;align-items:center;gap:10px;margin:16px 0 10px;display:flex}.tabs{background:#eceef2;border-radius:9px;gap:2px;padding:3px;display:inline-flex}.tab{color:var(--muted);background:0 0;border:none;border-radius:7px;padding:6px 13px}.tab.is-on{color:var(--text);background:#fff;font-weight:600;box-shadow:0 1px 2px #10182814}.search{flex:160px;min-width:0}.banner{border-radius:10px;justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px;padding:10px 12px;font-size:14px;display:flex}.banner-error{background:var(--danger-soft);color:var(--danger)}.todo-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.todo{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);align-items:flex-start;gap:12px;padding:12px;display:flex;box-shadow:0 1px 2px #1018280a}.todo.is-done{background:#fbfbfc}.todo.is-done .todo-title{color:var(--muted);text-decoration:line-through}.todo.is-overdue{border-color:#f3c6c6}.check{align-items:center;padding-top:2px;display:inline-flex}.check input{opacity:0;width:0;height:0;position:absolute}.check .box{border:1.5px solid #c3c8d1;border-radius:6px;width:20px;height:20px;transition:background .15s,border-color .15s;display:inline-block;position:relative}.check input:checked+.box{background:var(--primary);border-color:var(--primary)}.check input:checked+.box:after{content:"";border:2px solid #fff;border-width:0 2px 2px 0;width:5px;height:10px;position:absolute;top:2px;left:6px;transform:rotate(45deg)}.check input:focus-visible+.box{box-shadow:0 0 0 3px var(--primary-soft)}.todo-body{flex:auto;min-width:0}.todo-line{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.todo-title{word-break:break-word;font-weight:550}.todo-note{color:var(--muted);white-space:pre-wrap;word-break:break-word;margin:4px 0 0;font-size:13px}.badge{white-space:nowrap;border:1px solid #0000;border-radius:999px;padding:1px 7px;font-size:11px}.badge-high{background:var(--danger-soft);color:var(--danger)}.badge-low{color:var(--muted);background:#eef1f5}.badge-date{background:var(--primary-soft);color:var(--primary)}.badge-date-overdue{background:var(--danger-soft);color:var(--danger)}.todo-actions{flex-shrink:0;gap:6px;display:flex}.todo-actions .ghost,.todo-actions .danger{padding:5px 10px;font-size:13px}.todo-editing{display:block}.edit-grid{flex-direction:column;gap:10px;width:100%;display:flex}.edit-row{flex-wrap:wrap;gap:10px;display:flex}.edit-row .field{flex:150px}.edit-actions{gap:8px;display:flex}.empty{text-align:center;color:var(--muted);padding:36px 0}.toast{color:#fff;box-shadow:var(--shadow);background:#1f2430;border-radius:999px;max-width:calc(100% - 32px);padding:10px 16px;font-size:13px;position:fixed;bottom:24px;left:50%;transform:translate(-50%)}@media (width<=560px){.stats{grid-template-columns:repeat(2,1fr)}.app{padding:14px 12px 56px}.todo{flex-wrap:wrap}.todo-actions{justify-content:flex-end;width:100%}}