:root{--font: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;--bg: #f5f5f5;--surface: #ffffff;--text: #333333;--text-secondary: #8c8c8c;--text-done: #b0b0b0;--border: #ececec;--border-strong: #e0e0e0;--divider: rgba(0, 0, 0, .06);--accent: #4caf50;--accent-soft: rgba(76, 175, 80, .12);--check-border: #d0d0d0;--check-done-bg: transparent;--check-done-fg: #9ccc65;--row-radius: 10px;--row-h: 48px;--gap: 8px;--sidenav-w: 240px;--content-max: 720px;--shadow-row: 0 1px 2px rgba(0, 0, 0, .04);--shadow-focus: 0 0 0 1px var(--accent);--t: .15s cubic-bezier(.4, 0, .2, 1);--warn: #e53935}*,*:before,*:after{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:var(--font);font-size:14px;line-height:1.45;color:var(--text);background:var(--bg);overflow:hidden}[hidden]{display:none!important}.material-icons-outlined{font-size:18px;line-height:1;-webkit-user-select:none;user-select:none;opacity:0}html.fonts-ready .material-icons-outlined{opacity:1}.app{display:flex;height:100%}.nav-sidenav{width:var(--sidenav-w);flex-shrink:0;background:var(--surface);border-right:1px solid var(--divider);padding:12px 10px 24px;overflow-y:auto;display:flex;flex-direction:column}.nav-sidenav .tree{flex:1;min-height:0}.sidenav-brand{display:flex;align-items:center;gap:10px;padding:8px 12px 16px;font-weight:600;font-size:16px;color:var(--text)}.brand-mark{width:22px;height:22px;border-radius:6px;background:linear-gradient(135deg,#66bb6a,#43a047);box-shadow:inset 0 0 0 1px #ffffff40}.nav-section-label{font-size:11px;font-weight:600;letter-spacing:.04em;color:var(--text-secondary);padding:12px 12px 6px}.nav-link,.tree button{display:flex;align-items:center;gap:8px;width:100%;text-align:left;border:0;background:transparent;padding:8px 12px;margin:1px 0;border-radius:8px;cursor:pointer;font:inherit;color:var(--text-secondary);transition:background var(--t),color var(--t)}.nav-link:hover,.tree button:hover{background:#0000000a;color:var(--text)}.nav-link.active,.tree button.on{background:var(--accent-soft);color:var(--accent);font-weight:500}.nav-icon{width:20px;height:20px;display:grid;place-items:center;font-size:18px;color:inherit}.nav-label{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nav-date-jump{display:flex;align-items:center;gap:6px;padding:0 4px 4px}.jump-date-input{flex:1;min-width:0;font:inherit;font-size:12px;color:var(--text);border:1px solid var(--border-strong);border-radius:8px;background:#fafafa;padding:6px 8px;transition:border-color var(--t),box-shadow var(--t),background var(--t)}.jump-date-input:focus{outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px var(--accent-soft)}.jump-date-btn{flex-shrink:0;min-height:32px;padding:0 10px;font-size:12px}.tree,.tree ul{list-style:none;margin:0;padding:0}.tree ul{padding-left:4px}.tree .group{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-secondary);padding:8px 12px 4px}.tree .group .material-icons-outlined{font-size:16px;opacity:.7}.page{flex:1;min-width:0;display:flex;flex-direction:column;overflow:auto;background:var(--bg)}.main-header{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid transparent}.page-title{max-width:var(--content-max);margin:0 auto;padding:18px 20px 8px;width:100%}.page-title h1{margin:0;font-size:22px;font-weight:600;color:var(--text);letter-spacing:-.02em}.page-title .sub{display:block;margin-top:2px;font-size:12px;color:var(--text-secondary)}.task-list-wrapper{max-width:var(--content-max);width:100%;margin:0 auto;padding:8px 20px 64px}.add-task-bar{display:flex;align-items:center;gap:4px;background:var(--surface);border:1px solid var(--border);border-radius:var(--row-radius);box-shadow:var(--shadow-row);padding:4px 8px 4px 6px;margin-bottom:14px;transition:border-color var(--t),box-shadow var(--t)}.add-task-bar:focus-within{border-color:color-mix(in srgb,var(--accent) 55%,var(--border));box-shadow:0 0 0 3px var(--accent-soft)}.add-plus{width:36px;height:36px;border:0;background:transparent;color:var(--text-secondary);display:grid;place-items:center;border-radius:8px;pointer-events:none}.main-input{flex:1;min-width:0;border:0;outline:none;background:transparent;font:inherit;font-size:15px;color:var(--text);padding:10px 4px}.main-input::placeholder{color:#bdbdbd}.add-submit{border:0;background:transparent;color:var(--accent);font:inherit;font-size:13px;font-weight:500;padding:8px 12px;border-radius:8px;cursor:pointer;opacity:0;transition:opacity var(--t),background var(--t)}.add-task-bar:focus-within .add-submit{opacity:1}.add-submit:hover{background:var(--accent-soft)}.task-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--gap)}.task{position:relative;display:flex;align-items:center;gap:10px;min-height:var(--row-h);padding:8px 12px 8px 10px;background:var(--surface);border:1px solid var(--border);border-radius:var(--row-radius);box-shadow:var(--shadow-row);cursor:default;transition:border-color var(--t),box-shadow var(--t),background var(--t),opacity var(--t)}.task:hover{border-color:var(--border-strong)}.task.is-selected{border-color:var(--accent);box-shadow:var(--shadow-focus)}.task.is-enter{animation:task-enter .18s ease-out both}.task.d1{margin-left:22px}.task.d2{margin-left:44px}.task.done-row{background:#fafafa;cursor:default;position:relative}.task.done-row:after,#list-done .task:after{content:"";position:absolute;left:12px;right:12px;top:50%;height:1px;background:silver;transform:translateY(-50%);pointer-events:none;z-index:2}.task.done-row .body,#list-done .task .body{color:var(--text-done)!important;text-decoration:none!important}.task.done-row.is-locked .hover-controls{display:none}.task.is-dragging{opacity:.45}.task.over{border-color:var(--accent);background:var(--accent-soft)}.handle{width:18px;height:28px;display:grid;place-items:center;color:#cfcfcf;opacity:0;cursor:grab;flex-shrink:0;transition:opacity var(--t)}.task:hover .handle,.task.is-selected .handle{opacity:1}.handle .material-icons-outlined{font-size:16px}.done-toggle{width:18px;height:18px;margin:0;padding:0;flex-shrink:0;border:1.5px solid var(--check-border);border-radius:4px;background:transparent;color:transparent;cursor:pointer;display:grid;place-items:center;transition:border-color var(--t),background var(--t),color var(--t),transform 90ms ease-out}.done-toggle:hover{border-color:var(--check-done-fg)}.done-toggle:active{transform:scale(.92)}.done-toggle.on{background:var(--check-done-bg);border-color:#c5c5c5;color:var(--check-done-fg)}.done-toggle .material-icons-outlined{font-size:14px;font-weight:700}.body{flex:1;min-width:0;padding:4px 0;font-size:15px;color:var(--text);word-break:break-word;cursor:text}.task-trailing{display:flex;align-items:center;gap:2px;margin-left:auto;flex-shrink:0}.hover-controls{display:flex;align-items:center;gap:2px;opacity:0;transition:opacity var(--t)}.task:hover .hover-controls,.task.is-selected .hover-controls,.task:focus-within .hover-controls{opacity:1}.btn-expand{color:var(--text-secondary)}.btn-expand.is-open .material-icons-outlined{transform:rotate(90deg)}.btn-expand .material-icons-outlined{transition:transform var(--t);display:block}.icon-btn{width:32px;height:32px;border:0;border-radius:8px;background:transparent;color:var(--text-secondary);display:inline-grid;place-items:center;cursor:pointer;transition:background var(--t),color var(--t)}.icon-btn:hover{background:#0000000d;color:var(--text)}.icon-btn-danger:hover{background:#e539351a;color:var(--warn)}.sidenav-footer{margin-top:24px;padding-top:12px;border-top:1px solid var(--divider)}.nav-user{padding:4px 12px 8px;font-size:12px;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.auth-body{display:grid;place-items:center;min-height:100%;overflow:auto;padding:24px 16px}.auth-card{width:min(380px,100%);background:var(--surface);border-radius:14px;box-shadow:0 8px 28px #00000014;padding:28px 28px 24px}.auth-brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:16px;margin-bottom:18px}.auth-title{margin:0 0 4px;font-size:22px;font-weight:600}.auth-sub{margin:0 0 18px;color:var(--text-secondary);font-size:13px}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:#f0f0f0;border-radius:10px;padding:4px;margin-bottom:18px}.auth-tab{border:0;background:transparent;border-radius:8px;min-height:34px;font:inherit;font-size:13px;font-weight:500;color:var(--text-secondary);cursor:pointer}.auth-tab.is-active{background:var(--surface);color:var(--text);box-shadow:0 1px 2px #0000000f}.auth-form .field-label{margin-top:12px}.auth-form .field-label:first-of-type{margin-top:0}.auth-input{margin-bottom:4px}.auth-submit{width:100%;margin-top:18px;min-height:40px}.done-section{margin-top:18px}.done-toggle-head{display:inline-flex;align-items:center;gap:4px;border:0;background:transparent;padding:6px 4px;margin:0 0 10px;font:inherit;font-size:13px;color:var(--text-secondary);cursor:pointer;border-radius:6px}.done-toggle-head:hover{color:var(--text);background:#00000008}.done-toggle-head .chev{font-size:18px;transition:transform var(--t)}.done-section.is-collapsed .chev{transform:rotate(-90deg)}.done-section.is-collapsed #list-done{display:none}.empty{text-align:center;color:var(--text-secondary);padding:40px 16px;background:var(--surface);border:1px dashed var(--border-strong);border-radius:var(--row-radius)}.empty strong{display:block;font-weight:500;color:var(--text);margin-bottom:4px}.empty-hint{font-size:12px}.err{color:var(--warn);font-size:13px;margin:0 0 10px}.field-meta{font-size:13px;color:var(--text-secondary);background:#f7f7f7;border-radius:8px;padding:10px 12px;margin-bottom:12px}.tt-dialog{border:0;border-radius:12px;padding:0;width:min(440px,calc(100vw - 32px));background:var(--surface);color:var(--text);box-shadow:0 16px 40px #00000029}.tt-dialog::backdrop{background:#00000059}.dialog-inner{margin:0;padding:20px 20px 16px}.dialog-title{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:0 0 14px}.dialog-title h2{margin:0;font-size:17px;font-weight:600}.field-label{display:block;font-size:12px;color:var(--text-secondary);margin-bottom:6px}.tt-input{width:100%;font:inherit;font-size:15px;line-height:1.45;border:1px solid var(--border-strong);border-radius:8px;padding:10px 12px;resize:vertical;background:#fafafa;color:var(--text);transition:border-color var(--t),box-shadow var(--t),background var(--t)}.tt-input:focus{outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px var(--accent-soft)}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}.btn{border:0;border-radius:8px;padding:0 16px;min-height:34px;font:inherit;font-size:13px;font-weight:500;cursor:pointer}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:#0000000a;color:var(--text)}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:#43a047}@keyframes task-enter{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 720px){body{overflow:auto}.app{flex-direction:column;height:auto;min-height:100%}.nav-sidenav{width:100%;border-right:0;border-bottom:1px solid var(--divider);max-height:36vh}.handle,.hover-controls,.add-submit{opacity:1}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}