:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#253044;background:#fff;font-synthesis:none;--blue:#3264db;--muted:#8a92a2;--line:#e9ecf2}*{box-sizing:border-box}body{margin:0;display:flex;height:100dvh;overflow:hidden}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;background:none;color:inherit}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible{outline:3px solid #a1bcff;outline-offset:3px}button:hover{filter:brightness(.97)}[hidden]{display:none!important}aside{width:262px;flex-shrink:0;background:#f7f8fa;border-right:1px solid #edf0f4;padding:32px 20px 16px;display:flex;flex-direction:column}.brand{display:flex;gap:11px;align-items:center;color:#273348;text-decoration:none;font-size:17px;font-weight:650;white-space:nowrap}.logo{width:37px;height:39px;border-radius:12px;background:var(--blue);color:white;display:grid;place-items:center;font-weight:600;font-size:21px;box-shadow:0 4px 12px #3264db20}.brand small{display:block;font-size:9px;letter-spacing:2.8px;font-weight:500;color:#8e97aa;margin-top:5px}.new-chat{margin:32px 0 30px;border:1px solid #d5dff6;border-radius:10px;background:#eef3ff;color:#345db9;padding:12px 10px;display:flex;align-items:center;gap:8px;font-size:13px;font-weight:550}.new-chat>span{font-size:23px;line-height:20px}.new-chat kbd{margin-left:auto;font-size:10px;border:1px solid #d7e0f5;border-radius:4px;padding:2px 4px;color:#8092b4}.side-label,.history-head{font-size:11px;color:#9299a7;margin:0 10px 12px}.nav{display:flex;align-items:center;gap:12px;text-align:left;padding:12px;border-radius:9px;font-size:13px;margin:2px 0}.nav>span:first-child{font-size:19px;line-height:19px}.nav.active{background:#e9edf5;color:#3258a8;font-weight:550}.nav small{font-size:9px;color:#9ba1ac;border:1px solid #e0e4eb;border-radius:4px;padding:2px 4px;margin-left:auto}.nav-dot{width:5px;height:5px;background:#6487d3;border-radius:50%;margin-left:auto}.history-head{display:flex;align-items:center;justify-content:space-between;margin-top:32px}.history-head button{font-size:23px;line-height:18px}#history{overflow-y:auto;flex:1;min-height:40px}.empty-history{text-align:left;margin:10px 10px;color:#a0a6b2;font-size:12px;line-height:2.1}.history-item{display:flex;align-items:center;border-radius:7px;margin:3px 0}.history-item.selected{background:#e9edf5}.history-item>button:first-child{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:left;font-size:12px;padding:11px}.delete-chat{color:#9ca4b1;padding:8px}#history-search{width:100%;border:1px solid var(--line);border-radius:7px;padding:8px;font-size:12px}.sidebar-bottom{padding-top:18px}.knowledge-note{padding:14px 12px;font-size:11px;letter-spacing:.5px;border:1px solid #e6eaf0;border-radius:10px;background:linear-gradient(120deg,#f1f5fb,#f9fafc)}.tiny-dot,.model i{display:inline-block;border-radius:50%;width:5px;height:5px;background:#5f9b8b;margin-right:7px}.knowledge-note p{margin:7px 0 0 12px;color:#9aa2b0;font-size:10px}.account{margin-top:18px;display:flex;align-items:center;gap:10px;width:100%;text-align:left;font-size:12px}.avatar{background:#e7eaf0;color:#8190a8;border-radius:50%;width:33px;height:33px;display:grid;place-items:center}.account #account-label{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account small{display:block;color:#9aa2b0;font-size:10px;margin-top:4px}.account>span:last-child{color:#8a95aa}main{position:relative;flex:1;min-width:0;display:flex;flex-direction:column;background:radial-gradient(ellipse at 49% 35%,#f8faff 0%,#fff 65%)}header{height:80px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:0 37px;font-size:14px}.header-left,.header-right{display:flex;align-items:center;gap:17px}.version{font-size:9px;color:#8d96a9;padding:2px 5px;margin-left:6px;border:1px solid #e2e6ee;border-radius:4px;vertical-align:middle}.model{font-size:11px;color:#8993a4}.model i{width:5px;height:5px;background:#7f9bbc}.header-right button{font-size:18px;color:#929aac}#menu{display:none}#welcome{width:min(790px,calc(100% - 80px));margin:auto auto 0;text-align:center;padding:24px 0 22px}.welcome-symbol{width:64px;height:64px;margin:0 auto 20px;display:grid;place-items:center;border-radius:22px;background:linear-gradient(145deg,#fff,#eff4ff);border:1px solid #e2eafa;box-shadow:0 7px 30px #3c65aa0a;color:var(--blue);font-size:45px}.eyebrow{font-size:10px;letter-spacing:2px;color:#889bbd}h1{font-size:30px;letter-spacing:1px;font-weight:600;margin:16px 0}h1 span{color:var(--blue)}.intro{font-size:13px;color:#9299a9;line-height:1.95;margin:0}.suggestions{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:35px;text-align:left}.suggestions button{padding:18px 15px 17px;border:1px solid #e5eaf2;border-radius:13px;background:#ffffffb0;text-align:left;transition:transform .2s,border-color .2s}.suggestions button:hover{transform:translateY(-3px);border-color:#b6caf4}.card-icon{display:grid;place-items:center;width:31px;height:31px;border-radius:9px;margin-bottom:18px;font-size:23px}.blue{color:#5779ca;background:#eef3ff}.purple{color:#8a71bb;background:#f4effb}.green{color:#5b9d96;background:#edf6f4}.orange{color:#c5975f;background:#fcf5e9}.suggestions strong{font-size:13px;font-weight:550;display:block}.suggestions b{float:right;font-weight:400;color:#9fa8b7}.suggestions p{font-size:10px;color:#929aab;line-height:1.7;margin:9px 0 0;white-space:nowrap}.inspiration{display:flex;justify-content:center;gap:12px;align-items:center;font-size:10px;color:#a4abba;margin-top:21px}.inspiration button{color:#8c96a9;padding:4px}.composer-wrap{width:min(790px,calc(100% - 80px));margin:27px auto 0;padding-bottom:19px}#composer{padding:17px 18px 12px;background:#fff;border:1px solid #dfe5ef;border-radius:17px;box-shadow:0 7px 28px #223d7210}textarea{width:100%;resize:none;border:0;outline:0;color:#303d55;background:transparent;line-height:1.7;font-size:13px;min-height:57px;max-height:180px}textarea::placeholder{color:#a3abbb}.composer-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:6px}.scope{display:flex;align-items:center;gap:7px;font-size:10px;color:#7183a5;background:#f3f6fb;border-radius:6px;padding:6px 9px}.scope>span{font-size:15px}.composer-bottom>div{display:flex;align-items:center;gap:12px}.keyboard-hint{font-size:9px;color:#adb3c0}#send{width:34px;height:34px;border-radius:10px;background:var(--blue);color:#fff;font-size:24px}#stop{background:#edf2ff;border-radius:7px;padding:8px;color:var(--blue);font-size:12px}footer{text-align:center;font-size:10px;color:#a3aab8;margin-top:14px}footer>span{margin:0 8px}#service-notice{font-size:11px;color:#9a783d;margin-bottom:9px;text-align:center}#conversation{flex:1;overflow-y:auto;padding:25px max(40px,calc((100% - 790px)/2));scroll-behavior:smooth}.message{margin-bottom:28px;font-size:14px;line-height:1.9;overflow-wrap:anywhere}.message.user{display:flex;justify-content:flex-end}.message.user .content{background:#edf2fc;border-radius:14px 14px 3px 14px;padding:11px 17px;max-width:85%;white-space:pre-wrap}.assistant-label{display:flex;align-items:center;gap:9px;margin-bottom:10px;font-size:12px;color:#657798}.assistant-label span{color:var(--blue);font-size:22px}.message.assistant .content{padding-left:30px}.message p{margin:7px 0}.message pre{white-space:pre-wrap;background:#f3f5f9;padding:14px;border-radius:9px;font-size:12px}.message h3{font-size:16px;margin:16px 0 8px}.message ul,.message ol{padding-left:20px}.message code{background:#f0f3f9;padding:2px 4px;border-radius:3px}.copy{font-size:11px;color:#8d99ac;margin:8px 0 0 25px}.error{color:#b55555;font-size:12px;line-height:1.6}dialog{width:420px;max-width:calc(100vw - 32px);border:1px solid #e3e9f3;border-radius:20px;padding:34px;color:#29374d;box-shadow:0 20px 80px #233f6925}dialog::backdrop{background:#1e2c4840;backdrop-filter:blur(4px)}.close{position:absolute;right:17px;top:12px;font-size:25px;color:#9aa5b6}.auth-logo{margin-bottom:22px}dialog h2{font-size:24px;margin:12px 0}dialog p{color:#9099aa;font-size:13px;line-height:1.9}label{display:block;font-size:12px;margin-top:19px}label input{display:block;width:100%;margin-top:8px;border:1px solid #dce3ee;border-radius:9px;padding:12px;font-size:13px;outline-color:#7da2f4}.primary{background:var(--blue);color:white;border-radius:9px;padding:12px;width:100%;font-size:14px;margin-top:8px}#auth-switch{display:block;margin:19px auto 0;font-size:12px;color:var(--blue)}dialog .privacy-note{font-size:10px;color:#a3abba;margin-top:22px}#info-content{font-size:14px;line-height:1.9;color:#7a879a}#toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);padding:12px 20px;background:#2f3d55;color:white;border-radius:10px;font-size:12px;z-index:10;max-width:90vw}
@media(min-height:850px){#welcome{margin-top:auto}.composer-wrap{margin-bottom:auto;margin-top:35px}}@media(max-width:1100px){aside{width:230px;padding-left:16px;padding-right:16px}.brand{font-size:15px}#welcome,.composer-wrap{width:calc(100% - 48px)}.suggestions{gap:8px}.suggestions button{padding:14px 10px}.suggestions p{font-size:9px}h1{font-size:26px}.inspiration{gap:3px}}@media(max-width:760px){aside{display:none;position:fixed;z-index:5;height:100dvh;width:262px;box-shadow:15px 0 80px #24334720}aside.open{display:flex}#menu{display:block}header{height:65px;padding:0 20px}.header-right{gap:8px}.model{font-size:9px}#welcome{width:calc(100% - 36px);padding-top:16px;overflow:auto}.welcome-symbol{width:48px;height:48px;border-radius:16px;font-size:34px;margin-bottom:16px}h1{font-size:23px;line-height:1.65;margin:12px 0}.intro{font-size:11px}.suggestions{grid-template-columns:repeat(2,1fr);margin-top:23px;gap:10px}.suggestions button{padding:13px}.card-icon{float:left;margin:0 10px 0 0;width:28px;height:28px;font-size:20px}.suggestions strong{font-size:12px;padding-top:4px}.suggestions p{clear:both;padding-top:10px;font-size:10px}.inspiration{display:none}.composer-wrap{width:calc(100% - 30px);margin-top:16px;padding-bottom:12px}.keyboard-hint{display:none}textarea{font-size:13px}footer{font-size:8px}#conversation{padding:18px}.message{font-size:13px}#service-notice{font-size:10px}}@media(max-height:720px) and (min-width:761px){#welcome{padding-top:0}.welcome-symbol{margin-bottom:10px;width:46px;height:46px;font-size:34px;border-radius:15px}h1{font-size:25px;margin:10px 0}.suggestions{margin-top:20px}.inspiration{margin-top:12px}.composer-wrap{margin-top:10px}.card-icon{margin-bottom:10px}}
/* Structured answers and traceable web sources */
.message.assistant .content{min-width:0;max-width:100%;overflow-wrap:anywhere}.message .table-scroll{width:100%;max-width:100%;overflow-x:auto;margin:16px 0;border:1px solid #dfe6f1;border-radius:10px;background:#fff}.message table{width:100%;border-collapse:collapse;font-size:13px;line-height:1.75}.message th,.message td{padding:11px 14px;text-align:left;border-bottom:1px solid #e6ebf3;border-right:1px solid #e6ebf3;min-width:110px;max-width:360px;vertical-align:top;overflow-wrap:normal;word-break:normal}.message th{background:#f0f4fc;color:#344d78;font-weight:600}.message td:last-child,.message th:last-child{border-right:0}.message tr:last-child td{border-bottom:0}.message tbody tr:nth-child(even){background:#f9fbfe}.message .align-center{text-align:center}.message .align-right{text-align:right}.message .align-left{text-align:left}.message .content a{color:#3264db;text-decoration:underline;text-underline-offset:3px}.message a.citation{display:inline-block;text-decoration:none;font-size:11px;background:#edf3ff;border-radius:4px;padding:0 4px;line-height:1.7;vertical-align:super;margin:0 2px}.message blockquote{margin:12px 0;padding:4px 15px;border-left:3px solid #cbd9f5;background:#f6f8fc;color:#63728b}.message pre{overflow:auto;white-space:pre}.message pre code{background:none;padding:0}.message h1,.message h2,.message h3{letter-spacing:0;font-size:17px;line-height:1.7;margin:18px 0 8px}.sources-panel{margin:18px 0 0 30px;padding-top:13px;border-top:1px solid #e6ebf3}.sources-heading{font-size:12px;color:#596d8b;font-weight:600}.message .sources-note{font-size:11px;color:#8b97aa;line-height:1.7;margin:5px 0 10px}.source-card{display:block;text-decoration:none;color:#3f5c89;padding:10px 12px;border:1px solid #e2e8f3;background:#fafcff;border-radius:8px;margin:7px 0}.source-card:hover{border-color:#a9c2f2;background:#f1f6ff}.source-card strong{font-size:12px;font-weight:500;display:block;line-height:1.7}.source-card small{font-size:10px;color:#93a0b3;display:block;margin-top:4px}.composer-tools{display:flex;align-items:center;gap:10px}.search-option{margin:0;display:flex;align-items:center;gap:5px;color:#6780aa;font-size:10px;white-space:nowrap;cursor:pointer}.search-option input{width:13px;height:13px;padding:0;margin:0;accent-color:#3264db}.composer-bottom>.composer-tools{gap:10px}.keyboard-hint{font-size:8px}@media(max-width:760px){.sources-panel{margin-left:0}.message.assistant .content{padding-left:0}.message table{font-size:12px}.message th,.message td{padding:9px 11px}.composer-tools{gap:6px}}
/* Compact search modes, process disclosure and source drawer */
.mode-chip{position:relative;display:flex;align-items:center;gap:6px;font-size:11px;margin:0;padding:7px 10px;border:1px solid #e2e6ed;border-radius:20px;color:#778399;cursor:pointer;transition:background .15s}.mode-chip input{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}.mode-chip:has(input:checked){color:#3264db;border-color:#cbd9f5;background:#edf3ff}.mode-chip:has(input:focus-visible){outline:2px solid #759ef5;outline-offset:2px}.mode-chip svg,.process-icon svg{width:15px;height:15px;display:block}.mode-icon{display:block}.process-panel{margin:0 0 20px 30px;font-size:12px;color:#8390a5}.process-summary{display:flex;gap:8px;align-items:center;width:fit-content;cursor:pointer;list-style:none;padding:5px 0}.process-summary::-webkit-details-marker{display:none}.process-title{font-weight:500;color:#72829b}.process-time{font-size:10px;color:#a0a9b8}.chevron{font-size:19px;line-height:14px;transition:transform .15s;margin-left:2px}.process-panel[open] .chevron{transform:rotate(90deg)}.process-panel:not([data-phase="done"]):not([data-phase="error"]):not([data-phase="stopped"]) .process-icon{animation:process-pulse 1.5s ease-in-out infinite;color:#527cd3}.process-body{border-left:2px solid #e4eaf3;padding:2px 0 0 15px;margin:7px 0 0 7px;max-height:300px;overflow:auto}.process-steps{list-style:none;padding:0!important;margin:0 0 10px!important;line-height:2.2}.process-steps li:before{content:'·';margin-right:8px;color:#7293bd}.reasoning-text{font-size:12px;line-height:1.9;white-space:pre-wrap;color:#8b97aa;padding-top:8px;border-top:1px solid #edf0f5}.message.assistant .content:empty{display:none}.sources-panel{display:flex;align-items:center;flex-wrap:wrap;gap:10px;border:0;margin-top:18px;padding:0}.sources-trigger{display:flex;align-items:center;gap:7px;font-size:11px;color:#67758b;background:#f6f8fb;border:1px solid #e8edf4;border-radius:22px;padding:7px 11px;white-space:nowrap}.source-stack{display:flex;padding-left:4px}.domain-badge{display:grid;place-items:center;width:19px;height:19px;font-size:9px;font-weight:650;border-radius:50%;border:2px solid white;margin-left:-4px;background:#e4edfa;color:#5174ab}.tone-1{background:#e4f0ed;color:#578e7e}.tone-2{background:#eee8f6;color:#8971aa}.source-arrow{font-size:13px;color:#97a5b9}.sources-preview{display:flex;gap:7px;min-width:0;flex:1}.source-peek{max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:10px;color:#94a0b2;padding:3px 0;text-align:left}.source-peek+.source-peek{border-left:1px solid #e8edf4;padding-left:9px}.source-empty{font-size:10px;color:#a0a9b8}.message .copy{margin-top:13px}.source-drawer{inset:0 0 0 auto;margin:0;height:100dvh;max-height:100dvh;width:410px;max-width:100vw;border:0;border-left:1px solid #e5eaf1;border-radius:0;padding:28px;box-shadow:-12px 0 60px #233f6915}.source-drawer::backdrop{background:#22324a20;backdrop-filter:blur(1px)}.drawer-head{display:flex;justify-content:space-between;align-items:center}.drawer-eyebrow{font-size:10px;color:#95a2b6;letter-spacing:1.5px}.drawer-head h2{font-size:21px;margin:7px 0}.drawer-count{color:#9aa8bd;font-size:15px;font-weight:400;margin-left:5px}.drawer-close{font-size:26px;color:#9ba6b8;padding:3px 8px}.source-drawer .drawer-note{font-size:11px;line-height:1.8;margin:16px 0 24px;color:#8e9bb0}.drawer-source{padding:17px 13px;border-bottom:1px solid #edf0f5;border-radius:9px;outline:none}.drawer-source.highlighted,.drawer-source:focus{background:#f1f6ff;box-shadow:inset 0 0 0 1px #dce8ff}.source-meta{display:flex;align-items:center;gap:7px;color:#91a0b6;font-size:10px;margin-bottom:8px}.source-number{width:20px;height:20px;border-radius:6px;background:#edf2fb;color:#6381b7;display:grid;place-items:center}.drawer-source>a{color:#3e587e;text-decoration:none;font-size:13px;line-height:1.8;font-weight:500}.drawer-source>a:hover{text-decoration:underline}.source-drawer .source-date{font-size:10px;color:#9da9ba;margin:8px 0 0}.message a.citation{font-size:10px;border-radius:5px;padding:0 4px;background:#edf2fa;color:#728aac;vertical-align:baseline}.message a.citation:hover{background:#dbe8ff;color:#3264db}@keyframes process-pulse{50%{opacity:.35}}@media(prefers-reduced-motion:reduce){.process-icon{animation:none!important}}@media(max-width:760px){.process-panel{margin-left:0}.source-drawer{width:100%;height:82dvh;max-height:82dvh;inset:auto 0 0;border-radius:20px 20px 0 0;padding:23px}.sources-preview{display:none}.mode-chip{font-size:10px;padding:6px 9px}.keyboard-hint{display:none}}

.campus-login{display:flex;justify-content:center;gap:15px;text-decoration:none;background:#edf3ff;border:1px solid #cedcf6;border-radius:9px;color:#3264db;padding:12px;margin-top:20px;font-size:13px}.campus-note{font-size:10px!important;text-align:center;margin:6px 0 15px}.auth-divider{display:flex;gap:10px;align-items:center;color:#a2aaba;font-size:10px}.auth-divider:before,.auth-divider:after{content:'';height:1px;background:#e7ecf4;flex:1}