:root{--ink:#233732;--muted:#768079;--green:#174e48;--green-light:#e9f0e9;--paper:#faf9f5;--line:#e5e7de;--gold:#b78228;--cream:#f4eddd;--white:#fff;--error:#a54832;font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}button{color:inherit}button,a{touch-action:manipulation}a{color:var(--green)}button:focus-visible,a:focus-visible,select:focus-visible,textarea:focus-visible,input:focus-visible{outline:3px solid #c49b51;outline-offset:3px}[hidden]{display:none!important}button{border:0;background:none}h1,h2,h3,p{margin-top:0}p{line-height:1.8}.small{font-size:12px}.muted{color:var(--muted)}.eyebrow{font-size:11px;font-weight:600;letter-spacing:1.7px;color:var(--muted)}.green{color:var(--green)}.text-button{font-size:12px;color:var(--muted);padding:5px}.text-button:hover{color:var(--green)}.icon-button{width:34px;height:34px;border-radius:8px;font-size:20px}.icon-button:hover{background:var(--green-light)}.app-shell{display:flex;height:100dvh;min-height:500px;overflow:hidden}.sidebar{width:245px;flex:none;background:#f0f1e9;border-right:1px solid var(--line);padding:30px 22px 18px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;gap:11px;align-items:center;text-decoration:none;font-size:19px;font-weight:650;letter-spacing:.5px}.brand small{display:block;font-size:10px;letter-spacing:1px;font-weight:400;margin-top:6px;color:var(--muted)}.new-chat{display:flex;justify-content:center;align-items:center;gap:10px;border:1px solid #b7c7ba;background:#ffffff70;border-radius:9px;padding:11px;margin:30px 0;font-size:13px;color:var(--green)}.new-chat:hover{background:#fff}.new-chat span{font-size:22px;font-weight:300}.side-section select{display:block;width:100%;border:1px solid #d7ddcf;border-radius:7px;background:#f9faf5;padding:10px 7px;font-size:12px;margin:12px 0 8px;color:var(--ink)}.side-section p{font-size:10px;margin-bottom:26px}.history-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:9px}.history{overflow-y:auto;flex:1;min-height:65px}.history-item{width:100%;display:block;text-align:left;border-radius:7px;padding:11px 10px;margin:3px 0;font-size:12px;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;color:#68716b}.history-item.active{background:#e1e8dc;color:var(--green)}.history-item:hover{background:#e8ece2}.history-empty{font-size:11px;color:#8c938b;line-height:1.9;margin:12px 6px}.sidebar-bottom{padding-top:18px}.side-link{width:100%;display:flex;text-align:left;align-items:center;gap:10px;text-decoration:none;font-size:12px;color:#66726b;padding:11px 7px}.side-link>span{font-size:17px;width:20px}.side-foot{border-top:1px solid #dfe3d6;margin-top:18px;padding-top:15px;display:flex;align-items:center;justify-content:space-between;font-size:10px;color:#90988d}.main{flex:1;min-width:0;display:flex;flex-direction:column}.topbar{height:73px;flex:none;display:flex;align-items:center;justify-content:space-between;padding:0 38px;border-bottom:1px solid var(--line);background:#faf9f5ee;gap:8px}.top-left,.top-right{display:flex;align-items:center;gap:16px}.breadcrumb{font-size:12px;color:var(--muted)}.breadcrumb>span{padding:0 14px;color:#c1c8be}.breadcrumb strong{font-weight:500;color:#42564c}.status-badge{padding:6px 11px;border:1px solid #dedfcf;border-radius:20px;font-size:10px;color:#7c755b;background:#f5f1e4}.status-badge.live{color:var(--green);background:#e9f0e9;border-color:#d5e2d6}.demo-banner{display:flex;align-items:center;gap:8px;font-size:11px;color:#7f7256;padding:11px 38px;background:#f4f0e4;line-height:1.6;flex:none}.demo-banner strong{font-weight:600}.demo-dot{width:5px;height:5px;border-radius:50%;background:#b6924d;flex:none}.workspace{display:flex;flex:1;min-height:0}.conversation{flex:1;min-width:0;display:flex;flex-direction:column}.conversation-scroll{overflow-y:auto;flex:1;scroll-behavior:smooth;padding:38px 48px 20px}.welcome{max-width:820px;margin:0 auto}.welcome-top{display:flex;justify-content:space-between;gap:24px;margin-bottom:30px;align-items:center}.welcome h1{font-size:34px;line-height:1.55;letter-spacing:1px;font-weight:550;margin:14px 0 13px}.welcome-description{color:#7b837a;font-size:13px;line-height:1.95;margin-bottom:0}.orbit-art{height:210px;width:240px;position:relative;flex:none;opacity:.88;background:radial-gradient(ellipse,#e9edde00 30%,#faf9f500 70%)}.orbit{position:absolute;top:72px;left:34px;width:174px;height:64px;border:1px solid #aac2af;border-radius:50%}.orbit-a{transform:rotate(-38deg)}.orbit-b{transform:rotate(38deg)}.orbit-c{transform:rotate(90deg);border-color:#ccd2bc}.nucleus{position:absolute;top:91px;left:108px;width:26px;height:26px;border-radius:50%;background:#cf9b45;box-shadow:0 0 0 9px #e8d3a02b}.electron{position:absolute;width:10px;height:10px;border-radius:50%;background:var(--green)}.electron-a{top:53px;left:173px}.electron-b{top:132px;left:59px}.electron-c{top:20px;left:115px;background:#b2ba95}.orbit-art small{position:absolute;bottom:0;left:54px;font-size:10px;letter-spacing:2px;color:#a4ab95}.section-caption{font-size:12px;color:#515f54;font-weight:500}.section-caption>span{font-size:10px;color:#a0a698;float:right;font-weight:400}.mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin:14px 0 27px}.mode-card{text-align:left;border:1px solid var(--line);border-radius:12px;background:#fffdf9;padding:20px 18px 14px;transition:background .18s,border-color .18s,transform .18s;position:relative}.mode-card:hover{transform:translateY(-2px);border-color:#a1b5a3}.mode-card.selected{background:#edf2e9;border-color:#91ad94}.mode-card.selected:after{content:'✓';position:absolute;right:14px;top:16px;color:var(--green);font-size:11px}.mode-icon{display:flex;width:32px;height:32px;align-items:center;justify-content:center;border-radius:9px;background:#e9eee1;color:var(--green);font-size:21px;margin-bottom:15px}.mode-card:nth-child(2) .mode-icon{background:#f0eadc;color:#a17d3c}.mode-card:nth-child(3) .mode-icon{background:#e9e8ef;color:#77708e}.mode-card strong{display:block;font-size:16px;font-weight:600;margin-bottom:9px}.mode-card>span:not(.mode-icon){font-size:11px;color:#7d867a;line-height:1.9}.mode-card small{border-top:1px solid #e5e8dd;display:block;margin-top:18px;padding-top:11px;font-size:10px;color:#78866f}.mode-card small b{float:right;font-size:14px;font-weight:400}.starter-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.starter-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.starter{border:1px solid var(--line);border-radius:8px;background:#ffffff60;text-align:left;padding:12px 14px;font-size:12px;display:flex;justify-content:space-between;gap:12px;line-height:1.7}.starter span{color:#98a58f}.starter:hover{border-color:#bbc7b6;background:#fff}.composer-area{padding:12px 48px 16px;max-width:1020px;width:100%;margin:0 auto;flex:none}.composer{border:1px solid #cdd7c8;border-radius:13px;background:#fffefb;box-shadow:0 4px 20px #31492c04;padding:14px 16px 11px}.composer:focus-within{border-color:#8ba893;box-shadow:0 0 0 3px #e4ece0}.composer textarea{display:block;width:100%;resize:none;border:0;background:none;color:var(--ink);outline:none!important;line-height:1.7;font-size:13px;min-height:44px;max-height:155px;padding:0}.composer textarea::placeholder{color:#a0a69b}.composer-bottom{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:4px}.composer-bottom>span{font-size:10px;color:#97a08f}.composer-bottom>div{display:flex;align-items:center;gap:8px}.send-button,.primary-button{border-radius:8px;background:var(--green);color:#fff;padding:10px 18px;font-size:12px}.send-button span{margin-left:12px}.send-button:hover,.primary-button:hover{background:#236157}.stop-button{font-size:12px;padding:8px;border:1px solid var(--line);border-radius:7px}.composer-note{font-size:9px;color:#9ba394;line-height:1.6;margin:10px 2px 0;display:flex;justify-content:space-between;gap:10px}.quick-actions{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:10px}.quick-actions button{border:1px solid #dde3d5;border-radius:20px;font-size:10px;background:#f7f8f2;padding:7px 12px;color:#667760}.quick-actions button:hover{border-color:#9ab192}.chat-heading{max-width:750px;margin:0 auto 30px}.chat-heading h1{font-size:22px;line-height:1.6;font-weight:550;margin:9px 0 18px}.mode-tabs{display:inline-flex;border:1px solid var(--line);padding:3px;border-radius:8px;gap:3px}.mode-tabs button{font-size:11px;padding:7px 13px;border-radius:5px;color:#7b8576}.mode-tabs button.selected{background:var(--green-light);color:var(--green)}#messages{max-width:750px;margin:auto}.message{margin:0 0 25px;display:flex;gap:11px}.message-avatar{display:flex;align-items:center;justify-content:center;flex:none;width:28px;height:28px;background:var(--green);color:#fff;border-radius:8px;font-size:11px;margin-top:2px}.message-content{min-width:0;flex:1}.message-label{font-size:10px;color:#8c9786;margin:6px 0 10px}.message-body{font-size:14px;line-height:1.95;overflow-wrap:anywhere;white-space:pre-wrap}.message-body p{margin:0 0 10px;line-height:1.95}.message.user{flex-direction:row-reverse}.message.user .message-avatar{background:#e9e3d3;color:#827352}.message.user .message-content{flex:0 1 auto;max-width:90%}.message.user .message-label{text-align:right}.message.user .message-body{border-radius:12px 2px 12px 12px;background:#eaf0e5;padding:13px 17px;font-size:13px}.message-resources{display:flex;flex-wrap:wrap;gap:7px;margin-top:13px}.resource-chip{font-size:10px;color:#647c60;border:1px solid #dbe4d5;border-radius:6px;padding:7px 9px;background:#f3f7ee}.resource-chip:hover{background:#e6efdf}.summary-card{margin-top:16px;background:#f3f3e9;border:1px solid #dedfc9;border-radius:12px;padding:20px}.summary-card h3{font-size:16px;line-height:1.6;margin:8px 0 20px}.summary-section{margin:16px 0}.summary-section>strong{font-size:11px;color:#6b7d5e}.summary-section p,.summary-section li{font-size:12px;line-height:1.85;margin:8px 0}.summary-section ul{padding-left:18px}.summary-section blockquote{font-size:12px;line-height:1.8;border-left:2px solid #b7c39d;padding-left:12px;margin:12px 0;color:#62705c}.summary-card footer{border-top:1px solid #dcdcca;padding-top:12px;display:flex;align-items:center;justify-content:space-between;font-size:10px;color:#7e8975}.summary-card footer button{font-size:11px;color:var(--green)}.pending,.chat-error{max-width:750px;margin:0 auto 22px;font-size:12px;color:#7a8971;line-height:1.8}.thinking-dots{color:#92a485;font-size:9px;letter-spacing:3px;margin-right:10px;animation:pulse 1.4s infinite}.chat-error{background:#fbede5;border:1px solid #ecd2c1;border-radius:8px;padding:12px;color:var(--error)}.chat-error button{color:var(--error);margin-left:8px}.resource-rail{width:260px;flex:none;border-left:1px solid var(--line);padding:40px 24px;overflow-y:auto;background:#f7f7f0}.rail-heading h2{font-size:20px;font-weight:550;margin:14px 0 10px}.rail-heading p{font-size:11px;color:#89917f;line-height:1.9;margin-bottom:24px}.resource-card{display:block;text-align:left;width:100%;border:1px solid #dfe4d7;border-radius:10px;background:#fffef9;padding:17px 15px;margin-bottom:12px}.resource-card:hover{border-color:#95ae92}.resource-kind{font-size:9px;color:#8a9978;letter-spacing:1px}.resource-card h3{font-size:13px;font-weight:550;margin:10px 0 8px;line-height:1.6}.resource-card p{font-size:11px;line-height:1.9;color:#8b9284;margin-bottom:12px}.resource-card .resource-open{font-size:10px;color:var(--green)}.rail-note{display:flex;gap:9px;border-top:1px solid var(--line);padding-top:20px;margin-top:22px}.rail-note>span{color:#a3ae95}.rail-note p{font-size:10px;line-height:1.9;color:#929b88}.rail-empty{font-size:12px;color:#929b88;line-height:1.9}.resources-toggle{display:none}.mobile-menu{display:none}dialog{border:1px solid var(--line);border-radius:18px;color:var(--ink);background:var(--paper);box-shadow:0 20px 90px #152b2533;max-height:88dvh;overflow:auto}dialog::backdrop{background:#1b2f274d;backdrop-filter:blur(4px)}.login-dialog{width:440px;padding:38px}.login-dialog form{display:flex;flex-direction:column}.login-dialog img{margin-bottom:24px}.login-dialog h1{font-size:24px;font-weight:550;margin:12px 0}.login-dialog p{color:var(--muted);font-size:13px}.login-dialog label{font-size:12px;margin:12px 0 9px}.login-dialog input{padding:12px;background:#fff;border:1px solid #ccd6c8;border-radius:8px}.login-dialog #login-error{color:var(--error);font-size:12px;min-height:12px;margin:8px 0}.login-dialog small{font-size:10px;line-height:1.9;color:#939a8c;margin-top:22px}.detail-dialog{width:760px;padding:28px 34px}.dialog-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:24px}.detail-dialog h2{font-size:24px;line-height:1.6;font-weight:550}.detail-dialog p,.detail-dialog li{font-size:14px;line-height:1.95}.detail-dialog img.diagram{width:100%;height:auto;border-radius:8px;margin:12px 0}.detail-dialog .source{font-size:11px;color:var(--muted);border-top:1px solid var(--line);padding-top:18px;margin-top:24px}.detail-dialog .resource-card p{font-size:12px}.detail-dialog .library-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.detail-dialog .library-grid .resource-card{margin-bottom:0}.library-filters{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap}.library-filters select,.library-filters input{border:1px solid #d6ddce;background:#fff;padding:9px;border-radius:7px;font-size:12px;min-width:0}.library-filters input{flex:1}.detail-dialog details{border:1px solid var(--line);border-radius:8px;padding:15px;margin:20px 0}.detail-dialog summary{cursor:pointer;font-size:13px;color:var(--green)}.detail-dialog details p{font-size:13px;margin-top:14px}.detail-actions{display:flex;align-items:center;gap:14px;margin-top:20px}.detail-actions a{font-size:12px}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:100;background:#203e34;color:#fff;padding:12px 20px;border-radius:9px;font-size:12px;max-width:90%;line-height:1.6;box-shadow:0 5px 30px #0002}.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}@keyframes pulse{50%{opacity:.35}}@media(min-width:1500px){.conversation-scroll{padding-top:55px}.welcome-top{margin-bottom:40px}.mode-card{padding:24px}.welcome h1{font-size:39px}.orbit-art{transform:scale(1.12)}}@media(max-width:1200px){.sidebar{width:220px;padding:26px 17px 16px}.conversation-scroll{padding:30px 30px 16px}.composer-area{padding:12px 30px 14px}.resource-rail{width:220px;padding:30px 18px}.orbit-art{width:185px;transform:scale(.85);transform-origin:right center}.welcome h1{font-size:30px}.mode-card{padding:16px 13px}.welcome-top{gap:4px}.workspace.has-chat .conversation-scroll{padding-left:28px;padding-right:28px}}@media(max-width:1050px){.resource-rail{display:none}.resource-rail.show-mobile{display:block;position:absolute;right:0;top:110px;bottom:0;width:290px;z-index:15;box-shadow:-10px 0 30px #203e3410}.resources-toggle{display:inline-block}.topbar{padding:0 28px}.demo-banner{padding:10px 28px}.welcome{max-width:760px}.orbit-art{width:210px}}@media(max-width:760px){.app-shell{min-height:400px}.sidebar{position:fixed;left:0;top:0;bottom:0;width:260px;transform:translateX(-100%);transition:transform .2s}.sidebar.open{transform:translateX(0)}.sidebar-shade{position:fixed;inset:0;background:#203e3455;z-index:19}.mobile-menu{display:inline-flex;justify-content:center;align-items:center}.topbar{height:58px;padding:0 14px}.top-left,.top-right{gap:8px}.breadcrumb{font-size:11px}.breadcrumb>span{padding:0 6px}.status-badge{font-size:9px;padding:5px 8px}.demo-banner{padding:8px 18px;font-size:10px}.conversation-scroll{padding:27px 20px 16px}.welcome h1{font-size:28px;margin-top:12px}.welcome-description{font-size:12px}.welcome-top{margin-bottom:27px}.orbit-art{width:130px;transform:scale(.62);transform-origin:left center;margin-left:-5px;margin-right:5px;height:200px}.orbit-art small{display:none}.welcome .eyebrow{font-size:10px}.mode-grid{gap:8px;margin-bottom:24px}.mode-card{padding:14px 10px 11px;border-radius:10px}.mode-icon{width:29px;height:29px;font-size:19px;margin-bottom:14px}.mode-card strong{font-size:14px}.mode-card>span:not(.mode-icon){font-size:10px;line-height:1.8}.mode-card small{font-size:9px;margin-top:12px;padding-top:10px}.mode-card small b{display:none}.mode-card.selected:after{right:10px;top:14px}.starter{font-size:11px;padding:10px;gap:5px}.composer-area{padding:8px 18px 12px}.composer{padding:12px}.composer-bottom>span{font-size:9px}.composer textarea{font-size:14px}.composer-note{font-size:8px;margin-top:8px;display:block;text-align:center}.composer-note>span{display:none}.quick-actions{gap:5px}.quick-actions button{font-size:10px;padding:7px 9px}.chat-heading{margin-bottom:24px}.chat-heading h1{font-size:20px}.message{gap:8px;margin-bottom:23px}.message-body{font-size:14px}.message-avatar{width:25px;height:25px;font-size:10px}.message.user .message-content{max-width:88%}.resource-rail.show-mobile{top:95px;width:280px}.detail-dialog{padding:20px;width:calc(100% - 24px);max-height:90dvh}.detail-dialog h2{font-size:22px}.detail-dialog .library-grid{grid-template-columns:1fr}.login-dialog{width:calc(100% - 28px);padding:28px}.summary-card{padding:16px}.desktop-only{display:none}}@media(max-width:380px){.orbit-art{display:none}.mode-card>span:not(.mode-icon){font-size:9px}.mode-card{padding:12px 8px}.mode-grid{gap:6px}.welcome h1{font-size:27px}.topbar{padding:0 9px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

@media(max-width:760px){.mode-card br{display:none}.mode-card>span:not(.mode-icon){font-size:11px;color:#6d7967;line-height:1.8}.mode-card small{color:#68795d}.starter{color:#415440}}