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@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-outline-style:solid}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color 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components;@layer utilities{.relative{position:relative}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.block{display:block}.table{display:table}.outline{outline-style:var(--tw-outline-style);outline-width:1px}}:root{--ink:#1e2521;--muted:#6f7771;--paper:#fbfaf6;--canvas:#f3f1ea;--line:#dedfd8;--green:#1f684d;--green-dark:#174e3b;--green-soft:#e8f1ec;--gold:#a46d2d;--white:#fff}*{box-sizing:border-box}html,body{background:var(--canvas);height:100%;color:var(--ink);margin:0;font-family:PingFang SC,Microsoft YaHei,Noto Sans CJK SC,Arial,sans-serif;overflow:hidden}button,textarea{font:inherit}button{cursor:pointer}button:focus-visible,textarea:focus-visible{outline-offset:2px;outline:3px solid #1f684d33}.app-shell{grid-template-rows:72px minmax(0,1fr);height:100dvh;display:grid;overflow:hidden}.topbar{border-bottom:1px solid var(--line);z-index:20;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fbfaf6f2;grid-template-columns:1fr 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p{color:var(--muted);margin:0;font-size:10px}.sidebar-heading{color:#8b908c;letter-spacing:.13em;text-transform:uppercase;margin:0 8px 8px;font-size:10px;font-weight:700}.outline{flex-direction:column;gap:3px;display:flex}.outline-item{color:#5f6661;text-align:left;background:0 0;border:0;border-radius:8px;align-items:center;gap:9px;width:100%;padding:8px;font-size:12px;display:flex}.outline-item.active{color:var(--ink);background:#ffffffe0;box-shadow:0 3px 12px #353a360d}.outline-item em{color:var(--green);margin-left:auto;font-size:9px;font-style:normal}.check{color:#929791;border:1px solid #c8cac4;border-radius:999px;justify-content:center;align-items:center;width:19px;height:19px;font-size:9px;display:inline-flex}.check.done{background:var(--green);border-color:var(--green);color:#fff}.chat-panel{flex-direction:column;min-width:0;min-height:0;padding:32px clamp(25px,3vw,48px) 24px;display:flex;overflow:hidden}.chat-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;padding-bottom:22px;display:flex}.eyebrow{color:var(--gold);letter-spacing:.16em;margin-bottom:8px;font-size:9px;font-weight:800;display:block}.chat-heading h1{letter-spacing:.01em;margin:0;font-family:STSong,SimSun,serif;font-size:clamp(24px,2.1vw,33px);font-weight:600;line-height:1.32}.chat-heading p{color:var(--muted);margin:8px 0 0;font-size:12px;line-height:1.7}.model-alert{color:#72501f;background:#fff8ea;border:1px solid #ead7ae;border-radius:10px;align-items:center;gap:9px;margin-top:14px;padding:10px 12px;font-size:11px;display:flex}.model-alert span{color:#8b6b3b}.step-pill{background:var(--green-soft);color:var(--green);border:1px solid #d4e4da;border-radius:99px;flex:none;margin-left:16px;padding:7px 10px;font-size:10px;font-weight:700}.messages{overscroll-behavior:contain;scrollbar-gutter:stable;scroll-behavior:smooth;flex-direction:column;flex:1;gap:15px;min-height:0;padding:25px 3px;display:flex;overflow-y:auto}.messages-end{flex:0 0 1px;height:1px}.message-row{align-items:flex-start;gap:9px;max-width:88%;display:flex}.message-row.user{align-self:flex-end}.message-avatar{border-radius:9px 9px 9px 3px;width:29px;height:29px;margin-top:2px;font-family:STKaiti,KaiTi,serif;font-size:12px}.message-bubble{white-space:pre-wrap;background:#fff;border:1px solid #e4e3dc;border-radius:4px 13px 13px;padding:11px 14px;font-size:13px;line-height:1.72;box-shadow:0 5px 20px #212a250b}.user .message-bubble{background:var(--green);border-color:var(--green);color:#fff;border-radius:13px 4px 13px 13px}.thinking-panel{min-width:min(430px,72vw);padding:14px 15px}.processing-title{grid-template-columns:auto 1fr auto;align-items:center;gap:8px;margin-bottom:13px;display:grid}.processing-title strong{font-size:12px}.processing-title small{color:#8d9790;font-size:9px}.processing-pulse{background:var(--green);border-radius:999px;width:8px;height:8px;animation:1.4s ease-in-out infinite processingPulse;box-shadow:0 0 #1f684d40}.processing-stages{gap:7px;display:grid}.processing-stage{color:#a2a8a3;align-items:center;gap:9px;transition:color .18s,opacity .18s;display:flex}.processing-stage>span:last-child{flex-direction:column;display:flex}.processing-stage strong{font-size:10px;font-weight:650}.processing-stage small{margin-top:1px;font-size:8px}.processing-stage.active{color:var(--ink)}.processing-stage.done{color:var(--green)}.stage-marker{border:1px solid #d8dcd8;border-radius:999px;flex:none;justify-content:center;align-items:center;width:20px;height:20px;font-size:8px;display:flex}.processing-stage.active .stage-marker{background:var(--green-soft);color:var(--green);border-color:#bcd6c7;animation:1.2s ease-in-out infinite stageGlow}.processing-stage.done .stage-marker{background:var(--green);border-color:var(--green);color:#fff}.processing-track{background:#edf0ec;border-radius:999px;height:3px;margin-top:13px;overflow:hidden}.processing-track 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#1f684d14}}.composer-wrap{flex:none;margin-top:auto}.quick-options{flex-wrap:wrap;gap:7px;margin-bottom:9px;display:flex}.quick-options button{color:#526159;background:#ffffffbf;border:1px solid #d9dcd6;border-radius:99px;padding:7px 10px;font-size:10px}.quick-options button:hover{background:var(--green-soft);color:var(--green);border-color:#c8ded1}.composer{background:#fff;border:1px solid #d9dbd5;border-radius:14px;overflow:hidden;box-shadow:0 11px 35px #27302b14}.composer:focus-within{border-color:#7aa990;box-shadow:0 0 0 3px #1f684d14,0 11px 35px #27302b14}.file-input{display:none}.attachment-list{flex-wrap:wrap;gap:7px;padding:11px 12px 0;display:flex}.attachment-chip{background:#f5f7f3;border:1px solid #dce2dc;border-radius:9px;align-items:center;gap:7px;max-width:100%;padding:7px 8px;display:flex}.attachment-icon{background:var(--green-soft);color:var(--green);border-radius:6px;flex:none;justify-content:center;align-items:center;width:26px;height:26px;font-size:9px;font-weight:800;display:flex}.attachment-meta{flex-direction:column;min-width:0;display:flex}.attachment-meta strong{text-overflow:ellipsis;white-space:nowrap;max-width:160px;font-size:10px;overflow:hidden}.attachment-meta small{color:#929b95;font-size:8px}.attachment-chip>button{color:#879089;background:0 0;border:0;padding:3px;font-size:16px;line-height:1}.file-error{color:#a04d3d;padding:8px 15px 0;font-size:9px}.composer textarea{color:var(--ink);resize:none;background:0 0;border:0;outline:0;width:100%;min-height:68px;padding:13px 15px 3px;font-size:12px;line-height:1.6;display:block}.composer textarea::placeholder{color:#a4aaa5}.composer-footer{color:#a0a6a1;justify-content:space-between;padding:4px 8px 8px 15px;font-size:9px}.composer-actions{align-items:center;gap:7px;display:flex}.attach-button{color:var(--green);background:#f1f5f2;border:1px solid #d9e2dc;border-radius:8px;height:34px;padding:0 10px;font-size:10px;font-weight:650}.attach-button:hover:not(:disabled){background:var(--green-soft)}.attach-button:disabled{color:#a7afa9;cursor:not-allowed}.send-button{background:var(--green);color:#fff;border:0;border-radius:9px;width:34px;height:34px;font-size:17px}.send-button:disabled{cursor:not-allowed;background:#cdd2cf}.completion-card{background:var(--green-soft);border:1px solid #cfe0d6;border-radius:13px;gap:11px;padding:14px}.completion-card>span{background:var(--green);color:#fff;border-radius:99px;justify-content:center;align-items:center;width:28px;height:28px;display:flex}.completion-card div{flex:1}.completion-card strong{font-size:12px}.completion-card p{color:var(--muted);margin:3px 0 0;font-size:10px}.completion-card button{color:var(--green);background:#fff;border:1px solid #c9d9d0;border-radius:8px;padding:8px 10px;font-size:10px}.preview-panel{border-left:1px solid var(--line);background:#e9e7df;flex-direction:column;min-width:0;min-height:0;padding:25px clamp(18px,2vw,30px) 20px;display:flex;overflow:hidden}.preview-toolbar{justify-content:space-between;margin-bottom:13px}.preview-toolbar div{flex-direction:column;display:flex}.preview-toolbar .eyebrow{margin-bottom:3px}.preview-toolbar strong{font-family:STSong,SimSun,serif;font-size:17px}.autosave{color:#65967e;font-size:9px}.document{background:var(--paper);overscroll-behavior:contain;scrollbar-gutter:stable;border:1px solid #d9d4c8;flex:1;min-height:0;padding:clamp(28px,3vw,48px);overflow-y:auto;box-shadow:0 12px 35px #38332a1a}.paper-kicker{color:var(--gold);letter-spacing:.18em;text-align:center;margin-bottom:15px;font-size:9px;font-weight:700}.document h2{text-align:center;margin:0;font-family:STSong,SimSun,serif;font-size:clamp(22px,2vw,31px);font-weight:600;line-height:1.45}.paper-rule{background:var(--ink);width:56px;height:2px;margin:22px auto 25px;position:relative}.paper-rule:after{background:var(--gold);content:"";width:12px;height:2px;position:absolute;right:-17px}.document section{border-bottom:1px solid #e8e4da;margin-bottom:15px;padding:0 0 14px}.document section:last-child{border-bottom:0}.document h3{margin:0 0 7px;font-family:STSong,SimSun,serif;font-size:13px}.document p{color:#505751;margin:0;font-family:STSong,SimSun,serif;font-size:11px;line-height:1.82}.document .preview-placeholder{color:#b3b2aa;font-style:italic}.preview-actions{grid-template-columns:1fr 1.25fr;gap:8px;margin-top:12px;display:grid}.copy-button,.download-button{padding:11px}.copy-button{color:#505952;background:#fff;border:1px solid #d3d4ce}.download-button{background:var(--ink);border:1px solid var(--ink);color:#fff}.copy-button:hover,.ghost-button:hover{background:#f7f8f5;border-color:#c6cbc6}.download-button:hover{background:#333c37}@media (width<=1180px){.topbar{grid-template-columns:1fr auto}.workspace{grid-template-columns:210px minmax(360px,1.08fr) minmax(320px,.92fr)}.brief-sidebar{padding:20px 14px}.preview-panel{padding-inline:18px}}@media (width<=980px){.topbar{grid-template-columns:1fr auto}.workspace{grid-template-columns:minmax(360px,1.05fr) minmax(320px,.95fr)}.brief-sidebar{display:none}}@media (width<=760px){html,body{height:auto;min-height:100%;overflow:auto}.app-shell{height:auto;min-height:100dvh;display:block;overflow:visible}.topbar{grid-template-columns:1fr auto;height:64px;padding:0 14px;position:sticky;top:0}.brand span,.ghost-button{display:none}.workspace{display:block;overflow:visible}.brief-sidebar{display:none}.chat-panel{height:calc(100dvh - 64px);min-height:560px;padding:25px 17px 20px;overflow:hidden}.chat-heading{padding-bottom:18px}.chat-heading h1{font-size:25px}.chat-heading p{max-width:88%}.message-row{max-width:96%}.thinking-panel{min-width:min(330px,80vw)}.processing-title{grid-template-columns:auto 1fr}.processing-title small{display:none}.preview-panel{min-height:100dvh;padding:20px 14px;overflow:visible}.document{min-height:600px;padding:30px 24px;overflow:visible}}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}