:root{color:#24251f;background:#f4f0e8;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;--ink: #24251f;--muted: #6f695f;--paper: #f4f0e8;--surface: #fbfaf6;--line: #cec7bb;--accent: #225c46;--accent-strong: #164532;--danger: #a54236}*,*:before,*:after{box-sizing:border-box}html{min-width:320px;min-height:100%}body{margin:0;min-width:320px;min-height:100vh;-webkit-font-smoothing:antialiased;background:var(--paper)}button,input,textarea,select{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(34,92,70,.24);outline-offset:2px}.auth-layout{display:grid;min-height:100vh;grid-template-columns:minmax(0,1.05fr) minmax(420px,.95fr)}.auth-intro,.auth-form-panel{display:flex;flex-direction:column;justify-content:center;padding:clamp(40px,8vw,112px)}.auth-intro{position:relative;background:#1f2924;color:#f9f6ed}.brand-mark{display:grid;width:42px;height:42px;place-items:center;margin-bottom:52px;border:1px solid rgba(255,255,255,.3);border-radius:8px;color:#f3a16e}.eyebrow,.auth-date{margin:0 0 12px;color:#9aa59f;font-size:12px;font-weight:700;letter-spacing:0}.auth-intro h1{max-width:560px;margin:0;font-family:Georgia,Songti SC,serif;font-size:clamp(42px,6vw,72px);font-weight:500;line-height:1.12}.auth-intro-copy{max-width:480px;margin:30px 0 0;color:#c2cac5;font-size:16px;line-height:1.8}.auth-note{margin:52px 0 0;color:#87928c;font-size:12px}.auth-form-panel{background:var(--paper)}.auth-form-wrap{width:min(100%,400px);margin:0 auto}.auth-form-wrap h2{margin:0 0 36px;font-family:Georgia,Songti SC,serif;font-size:34px;font-weight:500;line-height:1.2}.mode-badge{width:fit-content;margin:-20px 0 26px;padding:5px 8px;border:1px solid #b8b1a6;border-radius:5px;color:#6f695f;font-size:11px;font-weight:700}.auth-form{display:grid;gap:22px}.field{display:grid;gap:8px}.field label{color:#4b4a43;font-size:13px;font-weight:700}.field-label-row{display:flex;align-items:center;justify-content:space-between}.field input{width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:6px;background:#ffffff8a;color:var(--ink)}.field input::placeholder{color:var(--muted);opacity:1}.field input:hover{border-color:#a9a296}.primary-button{min-height:48px;border:0;border-radius:6px;background:var(--accent);color:#fff;font-weight:700;transition:background .15s ease,transform .15s ease}.primary-button:disabled{cursor:wait;opacity:.65}.primary-button svg{display:inline-block;margin-right:6px;vertical-align:-4px}.primary-button:hover{background:var(--accent-strong)}.primary-button:active{transform:translateY(1px)}.text-button{margin:0;padding:0;border:0;background:transparent;color:var(--accent);font-size:13px;font-weight:700}.text-button:hover{text-decoration:underline}.auth-switch{margin:24px 0 0;color:var(--muted);font-size:13px;text-align:center}.form-message{margin:-8px 0 0;color:var(--accent);font-size:13px;line-height:1.5}.error-message{color:var(--danger)}.spin{animation:spin .9s linear infinite}.signed-in-placeholder{display:grid;min-height:100vh;place-content:center;gap:16px;text-align:center}.todo-shell{min-height:100vh;padding-bottom:32px;background:var(--paper)}.app-header{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;min-height:66px;padding:0 clamp(20px,4vw,56px);border-bottom:1px solid rgba(154,146,132,.35);background:#f4f0e8f0;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.app-brand{display:inline-flex;width:fit-content;align-items:center;gap:8px;color:var(--ink);font-size:14px;font-weight:800;text-decoration:none}.app-brand svg{color:var(--accent)}.desktop-nav{display:flex;align-items:center;gap:28px}.desktop-nav button{position:relative;padding:22px 1px 20px;border:0;background:transparent;color:var(--muted);font-size:13px;font-weight:700}.desktop-nav button:after{position:absolute;right:0;bottom:-1px;left:0;height:2px;background:transparent;content:""}.desktop-nav button.active{color:var(--ink)}.desktop-nav button.active:after{background:var(--accent)}.account-area{display:flex;min-width:0;align-items:center;justify-content:flex-end;gap:12px}.sync-status{display:inline-flex;align-items:center;gap:5px;color:var(--accent);font-size:11px;font-weight:700}.sync-status.demo{color:#866340}.account-email{overflow:hidden;max-width:180px;color:var(--muted);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.icon-button{display:inline-grid;width:34px;height:34px;flex:0 0 auto;place-items:center;padding:0;border:0;border-radius:6px;background:transparent;color:#6e6b62}.icon-button:hover{background:#313a3514;color:var(--ink)}.icon-button:disabled,.task-content-button:disabled,.task-check input:disabled+span{cursor:not-allowed;opacity:.45}.icon-button.danger:hover{background:#a5423617;color:var(--danger)}.todo-main{width:min(100% - 40px,900px);margin:0 auto;padding:70px 0 64px}.today-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:24px}.eyebrow.dark{color:var(--muted)}.today-heading h1{margin:0;font-family:Georgia,Songti SC,serif;font-size:clamp(34px,5vw,56px);font-weight:500;line-height:1.1}.progress-number,.view-count{flex:0 0 auto;text-align:right}.progress-number strong,.view-count strong{display:block;font-family:Georgia,Songti SC,serif;font-size:28px;font-weight:500}.progress-number span,.view-count span{display:block;margin-top:2px;color:var(--muted);font-size:11px}.progress-track{height:2px;margin:24px 0 30px;overflow:hidden;background:#d7d0c4}.progress-track span{display:block;height:100%;background:var(--accent);transition:width .22s ease}.task-composer{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;align-items:center;gap:10px;min-height:58px;padding:10px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);color:var(--accent)}.composer-error{margin:8px 0 0;color:var(--danger);font-size:12px}.task-composer textarea{min-width:0;max-height:110px;resize:vertical;padding:8px 0;border:0;outline:0;background:transparent;color:var(--ink);font-size:15px;line-height:1.5}.task-composer textarea::placeholder{color:var(--muted);opacity:1}.task-composer button{padding:8px 11px;border:0;border-radius:5px;background:transparent;color:var(--accent);font-size:12px;font-weight:800}.task-composer button:hover:not(:disabled){background:#225c4614}.task-composer button:disabled{cursor:default;color:#aaa397}.line-count{color:var(--muted);font-size:11px}.list-section{margin-top:52px}.list-toolbar{display:flex;min-height:50px;align-items:end;justify-content:space-between;gap:20px;padding-bottom:14px;border-bottom:1px solid var(--line)}.list-toolbar .eyebrow{margin-bottom:3px}.list-toolbar h2{margin:0;font-size:18px}.list-tools{display:flex;align-items:center;gap:8px}.search-control,.search-control input{min-width:0;border:0;outline:0;background:transparent;color:var(--ink);font-size:12px}.search-control input{width:120px}.search-control input::placeholder{color:var(--muted);opacity:1}.task-list{margin:0;padding:0;list-style:none}.task-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;min-height:76px;border-bottom:1px solid rgba(206,199,187,.68)}.task-row:hover .task-actions,.task-row:focus-within .task-actions{opacity:1}.task-check{display:grid;width:22px;height:22px;place-items:center}.task-check input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.task-check span{display:block;width:17px;height:17px;border:1.5px solid #8e8a80;border-radius:50%;transition:background .15s ease,border-color .15s ease}.task-check input:focus-visible+span{outline:3px solid rgba(34,92,70,.24);outline-offset:3px}.task-check input:checked+span{border:5px solid var(--accent);background:#fff}.task-content{display:flex;min-width:0;flex-direction:column;padding:14px 0}.task-title{max-width:100%;overflow-wrap:anywhere;font-size:15px;font-weight:700;line-height:1.45}.task-actions{display:flex;align-items:center;opacity:.68;transition:opacity .15s ease}.task-actions .icon-button:disabled{opacity:.24}.task-row.is-completed .task-title{color:var(--muted);text-decoration:line-through;text-decoration-thickness:1px}.task-row.is-completed .task-check span{opacity:.65}.empty-state{display:grid;min-height:260px;place-items:center;align-content:center;color:var(--muted);text-align:center}.empty-state svg{margin-bottom:14px;color:#9a958b}.empty-state h3{margin:0;color:#56534c;font-size:15px}.empty-state p{margin:8px 0 0;font-size:12px}.task-skeleton{display:grid}.task-skeleton i{display:block;height:76px;border-bottom:1px solid var(--line);background:linear-gradient(90deg,transparent,rgba(255,255,255,.45),transparent);background-size:200% 100%;animation:loading 1.3s ease-in-out infinite}.error-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid rgba(165,66,54,.3);color:var(--danger);font-size:13px}.error-banner button{border:0;background:transparent;color:var(--danger);font-weight:800}.task-dialog{width:min(92vw,540px);padding:0;border:0;border-radius:8px;background:#f8f5ee;color:var(--ink);box-shadow:0 22px 70px #191c193d}.task-dialog::backdrop{background:#1d221f7a;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.task-dialog-form{padding:28px}.task-dialog-form header,.task-dialog-form footer{display:flex;align-items:center;justify-content:space-between;gap:16px}.data-dialog{width:min(92vw,620px)}.transfer-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;padding:22px 0;border-bottom:1px solid var(--line)}.transfer-row:first-of-type{margin-top:20px;border-top:1px solid var(--line)}.transfer-icon{display:grid;width:38px;height:38px;place-items:center;border:1px solid var(--line);border-radius:6px;color:var(--accent)}.transfer-row h3,.transfer-row p{margin:0}.transfer-row h3{font-size:14px}.transfer-row p{margin-top:5px;color:var(--muted);font-size:12px;line-height:1.5}.file-picker{display:inline-flex;max-width:100%;align-items:center;gap:6px;margin-top:10px;color:var(--accent);font-size:12px;font-weight:800;cursor:pointer}.file-picker span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-picker input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.file-picker:focus-within{outline:3px solid rgba(34,92,70,.24);outline-offset:3px}.transfer-message{margin:16px 0 0;color:var(--accent);font-size:13px}.task-dialog-form h2{margin:0;font-family:Georgia,Songti SC,serif;font-size:28px;font-weight:500}.task-dialog-form>.field{margin-top:28px}.task-dialog textarea,.task-dialog input,.task-dialog select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:6px;background:#ffffff9e;color:var(--ink)}.task-dialog textarea{resize:vertical;line-height:1.6}.dialog-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}.dialog-error{margin:14px 0 0;color:var(--danger);font-size:12px}.task-dialog-form footer{justify-content:flex-end;margin-top:28px}.secondary-button{min-height:40px;padding:0 16px;border:1px solid var(--line);border-radius:6px;background:transparent;color:var(--ink);font-weight:700}.primary-button.compact{min-height:40px;padding:0 18px}.toast{position:fixed;right:24px;bottom:24px;z-index:40;display:flex;min-width:250px;align-items:center;gap:14px;padding:13px 14px;border-radius:7px;background:#202a25;color:#fff;box-shadow:0 12px 32px #181c1938;font-size:13px}.toast span{flex:1}.toast button{border:0;background:transparent;color:#f3ae79;font-weight:800}.toast .toast-close{color:#c8cfca;font-size:18px;font-weight:400}.mobile-nav{display:none}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}@keyframes loading{to{background-position:-200% 0}}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:840px){.auth-layout{grid-template-columns:1fr}.auth-intro{min-height:36vh;padding:36px 24px}.brand-mark{margin-bottom:28px}.auth-intro h1{font-size:clamp(36px,11vw,50px)}.auth-intro-copy{margin-top:18px;font-size:14px}.auth-note{display:none}.auth-form-panel{justify-content:flex-start;padding:42px 24px 56px}}@media(max-width:720px){.todo-shell{padding-bottom:88px}.app-header{grid-template-columns:1fr auto;min-height:58px;padding:0 18px}.desktop-nav,.account-email,.sync-status{display:none}.todo-main{width:min(100% - 32px,900px);padding:38px 0 36px}.today-heading{align-items:flex-start}.today-heading h1{max-width:270px;font-size:clamp(32px,10vw,44px)}.progress-number strong,.view-count strong{font-size:22px}.task-composer{grid-template-columns:auto minmax(0,1fr) auto}.line-count{display:none}.task-composer button{max-width:74px}.list-section{margin-top:38px}.list-toolbar{align-items:flex-start;flex-direction:column}.list-tools{width:100%}.search-control{flex:1}.search-control input{width:100%}.task-row{gap:10px}.task-actions{opacity:1}.task-actions .icon-button:first-child{display:none}.mobile-nav{position:fixed;right:0;bottom:0;left:0;z-index:30;display:grid;grid-template-columns:repeat(3,1fr);min-height:68px;padding:7px max(8px,env(safe-area-inset-right)) max(7px,env(safe-area-inset-bottom)) max(8px,env(safe-area-inset-left));border-top:1px solid rgba(154,146,132,.4);background:#f8f5eef5;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.mobile-nav button{display:flex;align-items:center;flex-direction:column;justify-content:center;gap:4px;border:0;background:transparent;color:var(--muted);font-size:10px;font-weight:700}.mobile-nav button.active{color:var(--accent)}.task-dialog{width:100%;max-width:none;max-height:86vh;margin:auto 0 0;border-radius:8px 8px 0 0}.task-dialog-form{padding:24px 20px max(28px,env(safe-area-inset-bottom))}.dialog-grid{grid-template-columns:1fr}.transfer-row{grid-template-columns:auto minmax(0,1fr)}.transfer-row>button{grid-column:2;width:fit-content}.toast{right:12px;bottom:82px;left:12px;min-width:0}}@media(max-width:390px){.todo-main{width:calc(100% - 28px)}.today-heading h1{max-width:230px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}