:root{color-scheme:light;--ink:#263d35;--muted:#64736a;--paper:#f8f7f0;--green:#216a50;--green-dark:#18533d;--soft-green:#eaf1e6;--line:#e1e6db;--cream:#fffdf7;font-family:PingFang SC,Microsoft YaHei,system-ui,sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 80% 0,#edf1df 0,transparent 36%),var(--paper)}button,input,textarea,select{font:inherit;color:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}a{color:var(--green);text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #1d6d53;outline-offset:4px}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.topbar{max-width:1440px;margin:auto;min-height:88px;padding:20px 40px;display:flex;gap:22px;align-items:center}.topbar img{display:block;width:128px}.topbar-label{font-size:13px;padding-left:22px;border-left:1px solid #cfd9cc;font-weight:600}.session-note{margin-left:auto;font-size:12px;color:var(--muted)}main{max-width:1440px;margin:auto;padding:0 40px 48px}.intro{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding:24px 0 28px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:1.5px;color:var(--green);margin:0 0 11px}.intro h1{font-size:34px;letter-spacing:-1px;margin:0;font-weight:650;line-height:1.4}.intro h1 span{color:var(--green)}.intro>p{font-size:13px;line-height:1.8;color:var(--muted);margin:0}.workspace{display:grid;grid-template-columns:minmax(340px,.85fr) minmax(0,1.25fr);gap:24px;align-items:start}.panel{background:#fffefb;border:1px solid var(--line);border-radius:20px;box-shadow:0 5px 22px #334b3110}.conversation{position:sticky;top:20px;display:flex;flex-direction:column;max-height:calc(100dvh - 40px);min-height:640px;overflow:hidden}.panel-heading{display:flex;gap:12px;align-items:center;padding:22px 24px;border-bottom:1px solid var(--line)}.assistant-avatar{width:40px;height:40px;flex:none;border-radius:14px 14px 14px 3px;background:var(--green);display:grid;place-items:center;font-size:18px;font-weight:700;color:#fff}.panel-heading h2{font-size:17px;line-height:1.5;margin:0}.panel-heading p{font-size:12px;color:var(--muted);margin:2px 0 0}.conversation-mark{margin-left:auto;font-size:28px;color:#93a77a}.messages{overflow-y:auto;overscroll-behavior:contain;flex:1;min-height:230px;max-height:470px;padding:22px 24px;scroll-behavior:auto}.message{max-width:94%;margin:0 0 22px}.message-label{display:block;font-size:11px;font-weight:600;color:var(--muted);margin:0 0 7px 3px}.message-body{padding:15px 17px;border-radius:3px 16px 16px;background:#f0f3e9;font-size:14px;line-height:1.85;white-space:pre-wrap;overflow-wrap:anywhere}.message.user{margin-left:auto}.message.user .message-label{text-align:right;margin-right:3px}.message.user .message-body{border-radius:16px 3px 16px 16px;background:#e0efe6;color:#204e39}.conversation-bottom{padding:0 20px 17px;margin-top:auto}.chat-examples{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:13px}.chat-examples button,.small-button{border:1px solid #c9d7c5;border-radius:18px;background:#fff;font-size:12px;padding:8px 12px;color:#365c42;line-height:1.5}.chat-examples button:hover,.small-button:hover{background:var(--soft-green)}.composer{background:#fff;border:1px solid #bbcfb8;border-radius:14px;padding:12px 13px;box-shadow:0 2px 10px #184b3010}.composer:focus-within{border-color:var(--green)}.composer textarea{resize:vertical;min-height:72px;max-height:190px;border:0;outline-offset:0;width:100%;font-size:14px;line-height:1.65;background:transparent}.composer textarea::placeholder{color:#7b867d}.composer-footer{display:flex;align-items:center;justify-content:space-between;gap:12px}.composer-footer>span{font-size:10px;color:var(--muted)}#sendMessage{border:0;border-radius:9px;padding:9px 13px;background:var(--green);color:#fff;font-size:13px;font-weight:600}#sendMessage span{margin-left:10px}.privacy-note{font-size:10px;line-height:1.7;color:var(--muted);margin:11px 2px 0}.creation{min-width:0;display:grid;gap:16px}.creation-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:0 2px 1px}.creation-heading h2{font-size:17px;line-height:1.5;margin:0}.scene-status{color:var(--green);font-size:11px;border:1px solid #cfdcc5;background:#f1f5e9;border-radius:20px;padding:7px 11px;line-height:1.5}.brief-panel,.materials-panel,.result-panel{padding:21px 24px}.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.section-title h3{font-size:16px;line-height:1.5;margin:0}.small-mark{font-size:11px;letter-spacing:1px;color:#829576}.draft-summary{font-size:13px;line-height:1.8;color:#526358;margin:0;white-space:pre-wrap;overflow-wrap:anywhere}.draft-controls{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:15px;padding-top:14px;border-top:1px dashed var(--line);font-size:12px}.draft-controls select{border:1px solid #cbd8c5;border-radius:8px;padding:8px 28px 8px 10px;background:#fff;max-width:100%}.subtle{font-size:11px;line-height:1.7;color:var(--muted);margin:0}.template-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px;max-height:360px;overflow-y:auto;padding:4px}.template-grid:empty{display:none}.template-choice{position:relative;border:1px solid var(--line);border-radius:10px;padding:7px;background:#fff;text-align:left;min-width:0}.template-choice[aria-pressed=true]{border:2px solid var(--green);padding:6px;box-shadow:0 0 0 2px #e6eee0}.template-choice img{display:block;width:100%;height:88px;object-fit:contain;background:#f8f8f3;border-radius:5px}.template-choice span{display:block;margin-top:7px;font-size:11px;line-height:1.6;overflow-wrap:anywhere}.template-choice small{display:block;font-size:10px;color:var(--muted);line-height:1.5}.uploads{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:19px}.upload-card{min-width:0;border:1px dashed #c6d3bf;border-radius:12px;background:#f8faf4;padding:13px}.upload-label{display:flex;justify-content:space-between;align-items:center;gap:8px}.upload-label label{font-size:12px;font-weight:600}.upload-label label span{font-size:10px;font-weight:400;color:var(--muted);margin-left:4px}.text-button{border:0;background:none;padding:3px 0;font-size:11px;text-decoration:underline;color:var(--green)}.upload-hint{font-size:10px;line-height:1.7;color:var(--muted);margin:7px 0 10px}.upload-card input{font-size:10px;max-width:100%;width:100%}.upload-card input::file-selector-button{color:#395d44;background:#fff;border:1px solid #c9d6c2;border-radius:6px;padding:7px 8px;font-size:11px;cursor:pointer;margin-right:6px}.upload-thumb{width:100%;height:98px;object-fit:contain;margin-top:12px;border-radius:6px;background:#fff}.photo-thumb{height:108px}.asset-status{font-size:11px;line-height:1.7;color:#4e674c;margin:8px 0 0}.asset-status:empty{display:none}.upload-card:has([aria-invalid=true]){border-color:#a45b38}.upload-card .small-button{margin-top:10px}.preview-frame{background:#f2f3ea;border:1px solid #e1e5d8;border-radius:12px;overflow:hidden;min-height:210px;display:grid;place-items:center}.preview-frame>img{display:block;width:100%;max-height:570px;object-fit:contain}.preview-empty{text-align:center;padding:28px 18px;color:#53664c}.preview-empty>span{display:block;color:#a0b38d;font-size:46px;line-height:1.5;margin-bottom:8px}.preview-empty strong{font-weight:500;font-size:14px}.preview-empty p{font-size:11px;line-height:1.8;color:var(--muted)}.preview-full{display:block;width:fit-content;margin:12px auto;font-size:12px}.downloads{display:flex;flex-wrap:wrap;gap:9px;margin:16px 0 10px}.downloads a{border:1px solid #b8cdb5;color:var(--green);background:#f4f8f0;border-radius:9px;padding:10px 14px;font-size:12px;text-decoration:none;font-weight:600}.downloads a:first-child{background:var(--green);border-color:var(--green);color:#fff}.primary{display:flex;align-items:center;justify-content:center;gap:15px;border:0;border-radius:11px;background:var(--green);color:#fff;padding:14px 20px;width:100%;font-weight:600;font-size:14px;margin-top:19px;min-height:48px}.primary:hover,#sendMessage:hover{background:var(--green-dark)}.generation-hint{font-size:11px;line-height:1.7;color:var(--muted);text-align:center;margin:11px 0 0}.work-status{font-size:12px;line-height:1.8;color:#7b4d20;margin:13px 0 0;overflow-wrap:anywhere}.work-status:empty{display:none}dialog{width:min(430px,calc(100% - 32px));max-height:calc(100dvh - 40px);overflow:auto;border:1px solid var(--line);border-radius:22px;padding:30px;background:var(--cream);color:var(--ink)}dialog::backdrop{background:#233c2e80;backdrop-filter:blur(3px)}dialog h2{font-size:24px;margin:0 0 12px}dialog p{font-size:13px;line-height:1.8;color:var(--muted)}dialog label{display:block;font-size:13px;font-weight:600;margin-top:17px}dialog input{display:block;width:100%;font-size:16px;border:1px solid #c6d3bf;border-radius:9px;padding:11px;margin-top:7px;background:#fff}dialog .eyebrow{font-size:11px}.dialog-close{position:absolute;right:15px;top:10px;border:0;background:none;font-size:25px;line-height:1;padding:8px;color:var(--muted)}@media(min-width:1500px){.messages{max-height:550px}}@media(max-width:1000px){.topbar{padding:20px 24px}main{padding:0 24px 40px}.workspace{gap:18px;grid-template-columns:minmax(300px,.9fr) minmax(0,1fr)}.intro h1{font-size:30px}.intro>p{font-size:12px}.brief-panel,.materials-panel,.result-panel{padding:20px}.uploads{grid-template-columns:1fr}.template-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:720px){.topbar{min-height:72px;padding:18px;gap:14px}.topbar img{width:105px}.topbar-label{font-size:11px;padding-left:14px}.session-note{display:none}main{padding:0 16px 30px}.intro{padding:15px 2px 23px;display:block}.eyebrow{font-size:10px}.intro h1{font-size:27px;letter-spacing:-.6px}.intro>p{font-size:12px;margin-top:11px}.workspace{display:flex;flex-direction:column;gap:25px}.conversation,.creation{width:100%}.conversation{position:static;min-height:0;max-height:none}.panel{border-radius:16px}.panel-heading{padding:17px 18px}.panel-heading h2{font-size:16px}.messages{padding:19px 18px 0;max-height:360px;min-height:180px}.message-body{font-size:13px}.conversation-bottom{padding:8px 16px 15px}.composer textarea{font-size:16px;min-height:77px}.composer-footer>span{font-size:9px}.privacy-note{font-size:10px}.creation{gap:14px}.creation-heading{margin:0 4px}.creation-heading h2{font-size:16px}.brief-panel,.materials-panel,.result-panel{padding:19px 17px}.template-grid{grid-template-columns:repeat(2,minmax(0,1fr));max-height:325px}.template-choice img{height:86px}.uploads{grid-template-columns:1fr 1fr;gap:9px}.upload-card{padding:11px}.upload-card input{font-size:10px}.upload-card input::file-selector-button{padding:7px 6px;font-size:10px}.preview-frame{min-height:190px}.primary{font-size:14px}.creation-heading .scene-status{max-width:58%;text-align:center}dialog{padding:28px 23px}}@media(prefers-reduced-motion:reduce){.messages{scroll-behavior:auto}}