:root{--bg:#e9efec;--sidebar:#f5f8f6;--surface:#fbfdfc;--surface-2:#eef4f1;--surface-3:#e3ece7;--line:#cbd8d2;--line-soft:#dce5e1;--text:#1a2923;--muted:#66766f;--muted-2:#899890;--primary:#167f73;--primary-strong:#0f675e;--primary-soft:#d9ece6;--amber:#c48a20;--amber-soft:#f4e7c5;--coral:#ce6652;--coral-soft:#f5ded9;--purple:#7866b2;--purple-soft:#e8e3f4;--green:#2b8b5c;--danger:#b84e46;--shadow:0 12px 32px rgba(39,67,55,0.09);--sidebar-width:340px;--font:"Microsoft YaHei UI","Microsoft YaHei","PingFang SC",system-ui,sans-serif}*{box-sizing:border-box}body,html{width:100%;min-height:100%;margin:0}body{color:var(--text);background:var(--bg);font-family:var(--font);letter-spacing:0}button,input,select,textarea{font:inherit;letter-spacing:0}a,button{color:inherit}a{text-decoration:none}.icon-button{width:40px;height:40px;padding:0;display:inline-grid;place-items:center;border:1px solid var(--line);border-radius:8px;background:var(--surface);cursor:pointer}.icon-button:hover{border-color:#9ebdb4;background:#fff}.icon-button.active,.tool-button.active{color:var(--primary);border-color:#91bfb3;background:var(--primary-soft)}.amber-button,.danger-button,.primary-button,.secondary-button{min-height:40px;padding:0 16px;border-radius:8px;cursor:pointer;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent}.primary-button{color:white;background:var(--primary)}.primary-button:hover{background:var(--primary-strong)}.primary-button:disabled{opacity:.55;cursor:not-allowed}.secondary-button{color:var(--text);background:var(--surface);border-color:var(--line)}.amber-button{color:#3d2b08;background:#e2b04b;border-color:#ce962d}.danger-button{color:var(--danger);background:#fff7f5;border-color:#e8b9b2}.text-button{border:0;background:transparent;color:var(--primary);cursor:pointer;padding:6px 8px}.app-shell{width:100vw;grid-template-columns:var(--sidebar-width) 1fr;overflow:hidden}.app-shell,.sidebar{height:100vh;display:grid}.sidebar{min-width:0;grid-template-rows:108px 76px 58px 64px 1fr 82px;border-right:1px solid #becdc6;background:var(--sidebar);box-shadow:7px 0 24px rgba(41,66,55,.05);z-index:20}.brand-row{justify-content:space-between;gap:8px;padding:0 14px 0 10px;border-bottom:1px solid var(--line-soft)}.brand,.brand-row{display:flex;align-items:center}.brand{min-width:0;gap:4px}.brand-logo{flex:0 0 auto;display:grid!important;place-items:center;margin:0!important;color:var(--text)!important}.brand-logo img{width:100%;height:100%;display:block;object-fit:contain}.brand>div{min-width:0}.brand strong{display:block;font-size:13px;line-height:1.45}.brand span{display:block;margin-top:3px;color:var(--muted-2);font-size:11px}.mobile-menu{display:none}.primary-nav{padding:10px 14px;display:grid;grid-template-columns:1fr 1fr;gap:8px;border-bottom:1px solid var(--line-soft)}.nav-button{border:1px solid transparent;border-radius:8px;background:transparent;color:var(--muted);display:flex;align-items:center;justify-content:center;gap:7px;cursor:pointer;font-size:13px;font-weight:700}.nav-button.active{color:var(--primary-strong);background:var(--primary-soft);border-color:#bad7cf}.nav-button.inspiration{color:#9b6a17}.category-tabs{margin:9px 12px;padding:3px;display:grid;grid-template-columns:repeat(5,1fr);background:#e6ede9;border:1px solid var(--line);border-radius:8px}.category-tabs button{height:32px;min-width:0;padding:0 3px;border:0;border-radius:6px;background:transparent;color:var(--muted);font-size:12px;font-weight:700;cursor:pointer}.category-tabs button.active{background:white;color:var(--primary);box-shadow:0 2px 8px rgba(42,70,58,.08)}.search-row{position:relative;padding:10px 12px;display:grid;grid-template-columns:1fr 40px;gap:8px;border-bottom:1px solid var(--line-soft)}.filter-popover{position:absolute;top:56px;right:12px;z-index:45;width:232px;padding:12px;border:1px solid var(--line);border-radius:8px;background:rgba(251,253,252,.98);box-shadow:0 18px 42px rgba(34,57,48,.16)}.filter-popover strong{display:block;margin-bottom:9px;font-size:12px}.filter-options{display:flex;flex-wrap:wrap;gap:6px}.filter-options button{min-height:30px;padding:0 9px;border:1px solid var(--line);border-radius:7px;background:white;color:var(--muted);font-size:10px;cursor:pointer}.filter-options button.active{color:var(--primary-strong);border-color:#9bc4b9;background:var(--primary-soft);font-weight:800}.search-box{height:40px;display:flex;align-items:center;gap:8px;padding:0 11px;background:var(--surface);border:1px solid var(--line);border-radius:8px}.search-box input{width:100%;border:0;outline:0;color:var(--text);background:transparent;font-size:12px}.search-box input::placeholder{color:var(--muted-2)}.model-scroll{min-height:0;overflow-y:auto;padding:10px 10px 18px;scrollbar-width:thin}.section-caption{padding:3px 7px 8px;color:var(--muted-2);font-size:11px;font-weight:700}.model-card{position:relative;width:100%;min-height:72px;margin-bottom:5px;padding:9px 24px 9px 10px;display:grid;grid-template-columns:42px 1fr auto;gap:10px;align-items:center;border:1px solid transparent;border-radius:8px;background:transparent;text-align:left;cursor:pointer}.model-card:hover{background:#eef4f1;border-color:var(--line-soft)}.model-card.active{background:#d8ebe5;border-color:#a9cec4;box-shadow:inset 3px 0 var(--primary)}.model-avatar{width:42px;height:42px;display:grid;place-items:center;border-radius:8px;background:#e3ebe7;color:#42544c;font-size:12px;font-weight:900}.model-avatar.claude{color:#b45e4a;background:var(--coral-soft)}.model-avatar.gpt{color:#25665d;background:#dcece7}.model-avatar.image{color:var(--purple);background:var(--purple-soft)}.model-avatar.video{color:#a0661d;background:var(--amber-soft)}.model-avatar.audio{color:#b64e70;background:#f3dfe7}.model-logo{width:100%;height:100%;display:grid;place-items:center}.model-logo svg{display:block;max-width:100%;max-height:100%}.model-copy{min-width:0}.model-name{display:flex;align-items:center;gap:6px;min-width:0}.model-name strong{font-size:13px}.model-desc,.model-name strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.model-desc{margin-top:5px;color:var(--muted);font-size:10px}.model-price{color:var(--amber);font-size:10px;font-weight:800;white-space:nowrap}.model-favorite{position:absolute;top:6px;right:5px;width:22px;height:22px;padding:0;display:grid;place-items:center;border:0;border-radius:6px;background:transparent;color:var(--muted-2);cursor:pointer}.model-favorite.active,.model-favorite:hover{color:var(--amber);background:var(--amber-soft)}.badge{display:inline-flex;align-items:center;height:19px;padding:0 5px;border:1px solid;border-radius:5px;font-size:9px;font-weight:800;white-space:nowrap}.badge.pro{color:#a16d12;background:var(--amber-soft)}.badge.standard{color:var(--primary);background:var(--primary-soft)}.badge.image{color:var(--purple);background:var(--purple-soft)}.badge.video{color:#a76522;background:var(--amber-soft)}.account-strip{padding:10px 12px;display:grid;grid-template-columns:1fr 94px;gap:8px;border-top:1px solid var(--line);background:#f1f5f3}.profile-button{min-width:0;padding:7px;display:grid;grid-template-columns:40px 1fr;align-items:center;gap:9px;border:1px solid var(--line);border-radius:8px;background:var(--surface);text-align:left;cursor:pointer}.user-avatar{flex:0 0 auto;display:inline-grid;place-items:center;overflow:hidden;border-radius:50%;color:var(--primary);background:var(--primary-soft)}.user-avatar img{width:100%;height:100%;display:block;object-fit:cover}.profile-name{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:800}.profile-balance{display:block;margin-top:3px;color:var(--amber);font-size:11px;font-weight:800}.account-strip .amber-button{padding:0 10px}.workspace{min-width:0;height:100vh;display:grid;grid-template-rows:70px 1fr;background:#edf2ef}.topbar{justify-content:space-between;gap:16px;padding:0 24px;border-bottom:1px solid var(--line);background:rgba(249,251,250,.93);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.topbar,.topbar-group{min-width:0;display:flex;align-items:center}.topbar-group{gap:9px}.task-button{height:40px;padding:0 14px;display:flex;align-items:center;gap:8px;border:1px solid #d7b56c;border-radius:8px;background:#f8edce;color:#8a5b0e;font-weight:800;cursor:pointer}.task-count{min-width:20px;height:20px;display:grid;place-items:center;border-radius:8px;color:white;background:var(--amber);font-size:10px}.conversation-title{max-width:380px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:13px}.status-chip{height:32px;padding:0 10px;display:flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:8px;background:white;color:var(--muted);font-size:11px}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--green)}.stage{position:relative;min-height:0;overflow:hidden}.empty-stage{position:absolute;inset:0;overflow-y:auto;padding:40px 40px 250px}.model-hero{width:min(720px,100%);margin:0 auto;text-align:center}.hero-mark{width:72px;height:72px;margin:0 auto 17px;display:grid;place-items:center;border:1px solid #b8d0c7;border-radius:8px;background:#f8fbf9;box-shadow:var(--shadow);font-size:24px;font-weight:900}.eyebrow,.hero-mark{color:var(--primary)}.eyebrow{font-size:11px;font-weight:800}.model-hero h1{margin:8px 0;font-size:28px;line-height:1.3}.model-hero p{max-width:620px;margin:0 auto;color:var(--muted);font-size:13px;line-height:1.75}.facts{margin-top:18px;display:flex;justify-content:center;flex-wrap:wrap;gap:7px}.fact{padding:7px 9px;border:1px solid var(--line);border-radius:8px;background:rgba(251,253,252,.9);color:var(--muted);font-size:10px}.fact strong{color:var(--text)}.quick-grid{width:min(900px,100%);margin:32px auto 0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.quick-item{min-width:0;height:86px;padding:12px;border:1px solid var(--line);border-radius:8px;background:rgba(250,252,251,.92);text-align:left;cursor:pointer}.quick-item:hover{border-color:#9fc2b8;background:white;transform:translateY(-1px)}.quick-item svg{color:var(--primary)}.quick-item strong{display:block;margin-top:7px;font-size:12px}.quick-item span{display:block;margin-top:4px;color:var(--muted-2);font-size:10px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.messages{position:absolute;inset:0;overflow-y:auto;padding:26px max(32px,calc((100% - 920px)/2)) 245px;scroll-behavior:smooth}.message-end{scroll-margin-bottom:245px}.message{display:grid;grid-template-columns:36px minmax(0,1fr);gap:12px;margin-bottom:24px}.message.user{grid-template-columns:minmax(0,1fr) 36px}.message.user .message-avatar{grid-column:2}.message.user .message-content{grid-column:1;grid-row:1;justify-self:end;max-width:76%;background:#dcece6;border-color:#bad8d0}.message-avatar{width:36px;height:36px;display:grid;place-items:center;border-radius:8px;background:#255f57;color:white;font-size:11px;font-weight:900}.message.user .message-avatar{background:#d8a947;color:#3f2d0b}.message-avatar .user-avatar{margin:-1px}.message-content{max-width:88%;min-width:0;padding:13px 15px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:#27372f;font-size:14px;line-height:1.8;word-break:break-word;box-shadow:0 4px 15px rgba(43,70,59,.04)}.message-body{min-width:0}.message-text{white-space:pre-wrap}.code-block{min-width:0;margin:10px 0;overflow:hidden;border:1px solid #31433b;border-radius:7px;background:#17211d;color:#edf4f1}.code-block:first-child{margin-top:0}.code-block:last-child{margin-bottom:0}.code-block-head{min-height:36px;padding:0 9px 0 12px;display:flex;align-items:center;justify-content:space-between;gap:10px;border-bottom:1px solid #33463e;background:#223029;color:#b9c8c1;font-size:10px}.code-block-head button{min-height:28px;padding:0 7px;display:inline-flex;align-items:center;gap:5px;border:0;border-radius:6px;background:transparent;color:#dfe9e5;font-size:10px;cursor:pointer}.code-block-head button:hover{background:#31443c}.code-block pre{max-width:100%;margin:0;padding:13px 14px;overflow-x:auto;white-space:pre;font:12px/1.65 Consolas,Courier New,monospace}.message-meta{margin-top:7px;color:var(--muted-2);font-size:10px}.typing{display:flex;gap:5px;align-items:center;height:22px}.typing span{width:6px;height:6px;border-radius:50%;background:var(--primary);animation:pulse 1.2s infinite}.typing span:nth-child(2){animation-delay:.15s}.typing span:nth-child(3){animation-delay:.3s}@keyframes pulse{0%,70%,to{opacity:.25;transform:translateY(0)}35%{opacity:1;transform:translateY(-3px)}}.composer-wrap{position:absolute;left:50%;bottom:20px;width:min(980px,calc(100% - 64px));transform:translateX(-50%);z-index:8}.composer-meta{min-height:34px;margin:0 4px 7px;display:flex;align-items:end;justify-content:space-between;gap:10px}.selected-sku{position:relative;display:flex;align-items:center;gap:7px}.model-picker-trigger{min-width:228px;height:42px;padding:0 10px;display:grid;grid-template-columns:24px minmax(0,1fr) 16px;align-items:center;gap:9px;border:1px solid var(--line);border-radius:8px;background:rgba(251,253,252,.97);text-align:left;cursor:pointer;box-shadow:0 4px 14px rgba(40,65,54,.05)}.model-picker-trigger>span{min-width:0}.model-picker-trigger small,.model-picker-trigger strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.model-picker-trigger strong{font-size:11px}.model-picker-trigger small{margin-top:2px;color:var(--muted-2);font-size:9px}.model-picker{position:absolute;left:0;bottom:49px;z-index:75;width:min(580px,calc(100vw - 40px));max-height:min(390px,calc(100vh - 330px));overflow-y:auto;overscroll-behavior:contain;border:1px solid var(--line);border-radius:8px;background:rgba(250,252,251,.99);box-shadow:0 22px 60px rgba(31,53,44,.21)}.model-picker-head{position:sticky;top:0;z-index:2;padding:12px 14px;background:rgba(250,252,251,.97);color:var(--muted);font-size:11px;font-weight:800}.model-picker-head,.model-picker-row{border-bottom:1px solid var(--line-soft)}.model-picker-row{min-height:68px;padding:9px 11px;display:grid;grid-template-columns:34px minmax(0,1fr) auto;align-items:center;gap:10px}.model-picker-row:hover{background:var(--surface-2)}.model-picker-row>span{min-width:0}.model-picker-row small,.model-picker-row strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.model-picker-row strong{font-size:12px}.model-picker-row small{margin-top:4px;color:var(--muted-2);font-size:9px}.model-picker-row>div{display:flex;gap:5px}.model-picker-row button{height:30px;padding:0 8px;border:1px solid var(--line);border-radius:7px;background:white;color:var(--muted);font-size:9px;cursor:pointer}.model-picker-row button.active{color:var(--primary-strong);border-color:#92bfb4;background:var(--primary-soft);font-weight:800}.model-option-row{width:100%;min-height:62px;padding:9px 12px;display:grid;grid-template-columns:34px minmax(0,1fr);align-items:center;gap:10px;border:0;border-bottom:1px solid var(--line-soft);background:transparent;text-align:left;cursor:pointer}.model-option-row.active,.model-option-row:hover{background:var(--primary-soft)}.model-option-row>span{min-width:0}.model-option-row small,.model-option-row strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.model-option-row strong{font-size:12px}.model-option-row small{margin-top:4px;color:var(--muted);font-size:9px}.context-meter{color:var(--muted-2);font-size:10px}.context-meter b{color:var(--primary)}.composer{min-height:158px;overflow:hidden;border:1px solid #afc1b9;border-radius:8px;background:rgba(250,252,251,.98);box-shadow:0 18px 46px rgba(46,72,61,.15)}.composer.drag-active{position:relative;border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,127,115,.12),0 18px 46px rgba(46,72,61,.15)}.drop-hint{position:absolute;inset:0;z-index:5;display:flex;align-items:center;justify-content:center;gap:9px;background:rgba(231,244,239,.94);color:var(--primary-strong);font-size:13px;font-weight:800;pointer-events:none}.composer textarea{width:100%;height:96px;padding:16px 18px;resize:none;border:0;outline:0;background:transparent;color:var(--text);font-size:14px;line-height:1.6}.composer textarea::placeholder{color:#8c9a93}.media-options{padding:0 14px 10px;display:flex;align-items:center;flex-wrap:wrap;gap:7px}.segmented{display:inline-flex;padding:2px;border:1px solid var(--line);border-radius:8px;background:var(--surface-2)}.segmented button{height:28px;padding:0 9px;border:0;border-radius:6px;background:transparent;color:var(--muted);font-size:10px;cursor:pointer}.segmented button.active{background:white;color:var(--primary);box-shadow:0 2px 6px rgba(40,65,54,.09)}.duration-input{display:inline-flex;align-items:center;gap:2px}.duration-input .section-caption{padding-bottom:3px}.duration-field{height:32px;display:inline-flex;align-items:center;gap:5px;padding:0 8px;border:1px solid var(--line);border-radius:8px;background:var(--surface-2);color:var(--muted);font-size:11px}.duration-field input{width:52px;min-width:0;border:0;outline:0;background:transparent;color:var(--text);font:inherit}.composer-toolbar{min-height:58px;padding:0 12px 0 13px;display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid var(--line-soft)}.hidden-input{display:none}.attachment-row{padding:0 13px 10px;display:flex;flex-wrap:wrap;gap:6px}.attachment-chip{max-width:220px;height:28px;padding:0 5px 0 8px;display:inline-flex;align-items:center;gap:5px;border:1px solid var(--line);border-radius:7px;background:var(--surface-2);color:var(--muted);font-size:10px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.attachment-chip button{width:20px;height:20px;padding:0;display:grid;place-items:center;border:0;border-radius:5px;background:transparent;color:var(--muted);cursor:pointer}.toolbar-group{gap:7px;min-width:0}.tool-button,.toolbar-group{display:flex;align-items:center}.tool-button{height:34px;padding:0 10px;gap:6px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--muted);font-size:10px;cursor:pointer}.tool-button.icon{width:34px;padding:0;justify-content:center}.price-label{color:var(--amber);font-size:11px;font-weight:900;white-space:nowrap}.send-button{width:42px;height:42px;padding:0;display:grid;place-items:center;border:0;border-radius:8px;background:var(--primary);color:white;cursor:pointer;box-shadow:0 7px 18px rgba(22,127,115,.22)}.send-button:disabled{opacity:.5;cursor:not-allowed}.advanced-panel{position:absolute;left:0;right:0;bottom:calc(100% + 9px);min-height:72px;padding:12px 12px 12px 14px;display:grid;grid-template-columns:minmax(180px,1fr) auto auto 40px;align-items:center;gap:12px;border:1px solid var(--line);border-radius:8px;background:rgba(250,252,251,.99);box-shadow:0 16px 42px rgba(35,58,49,.16)}.advanced-panel>div span,.advanced-panel>div strong{display:block}.advanced-panel>div strong{font-size:12px}.advanced-panel>div 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