:root{--text:#111113;--muted:#65656b;--line:#ececef;--soft:#f7f7f9;--soft2:#f3f3f6;--purple:#6757e5;--rail:54px;--content:820px;--radius:14px}*{box-sizing:border-box}html,body{margin:0;height:100%;font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff}button,input,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}.rail{position:fixed;inset:0 auto 0 0;width:var(--rail);border-right:1px solid #ededf0;background:#fff;z-index:30;display:flex;flex-direction:column;align-items:center}.rail-logo{border:0;background:transparent;width:52px;height:41px;display:flex;align-items:center;justify-content:center}.rail-nav{display:flex;flex-direction:column;align-items:center;gap:1px;width:100%;padding-top:4px}.rail-btn{position:relative;width:44px;height:36px;border:0;border-radius:9px;background:transparent;color:#101014;font-size:18px;display:flex;align-items:center;justify-content:center}.rail-btn:hover,.rail-btn.active{background:#f5f5f7}.rail-btn b{position:absolute;right:4px;top:2px;min-width:15px;height:15px;padding:0 4px;border-radius:8px;background:#5d5ce2;color:#fff;font-size:10px;line-height:15px}.rail-divider{height:1px;width:34px;background:#ececf0;margin:4px 0}.rail-bottom{margin-top:auto;padding-bottom:11px;display:flex;flex-direction:column;align-items:center;gap:3px}.avatar{width:30px;height:30px;border-radius:50%;border:0;background:linear-gradient(145deg,#e9eefb,#9ba7c6);display:inline-flex;align-items:center;justify-content:center;font-size:12px;color:#fff;overflow:hidden}.rail-avatar{width:24px;height:24px;font-size:10px}.bot-mark{position:relative;display:inline-flex;width:54px;height:43px;border:5px solid #090909;border-radius:12px;background:#fff;align-items:center;justify-content:center;gap:6px;box-shadow:7px 8px 0 -4px #a854ff}.bot-mark:before,.bot-mark:after{content:"";position:absolute;background:#090909}.bot-mark:before{width:29px;height:5px;top:-10px;border-radius:4px}.bot-mark:after{width:8px;height:8px;bottom:-10px;left:8px;transform:skew(-28deg);box-shadow:30px 0 0 #694de8}.bot-mark i{width:8px;height:12px;border:3px solid #090909;border-radius:4px}.bot-mark.small{transform:scale(.48);transform-origin:center;width:50px;margin:-12px}.workspace{min-height:100%;margin-left:var(--rail);position:relative}.topbar{position:fixed;left:var(--rail);right:0;top:0;height:56px;padding:8px 14px;display:flex;align-items:center;justify-content:space-between;z-index:12;background:rgba(255,255,255,.88);backdrop-filter:blur(12px)}.top-profile{border:0;background:transparent;border-radius:20px;padding:4px 8px 4px 4px;display:flex;align-items:center;gap:7px;color:#38383d}.top-profile:hover{background:#f5f5f7}.home-view{min-height:100vh;padding:150px 24px 60px}.hero{width:min(650px,calc(100vw - 100px));margin:0 auto}.brand-lockup{display:flex;align-items:center;justify-content:center;gap:18px;margin-bottom:48px}.brand-lockup h1{font-size:51px;letter-spacing:-3px;margin:0;font-weight:700}.quick-models{height:27px;display:flex;justify-content:center;align-items:center;gap:8px;margin-bottom:6px;overflow:hidden}.quick-chip{height:27px;padding:3px 8px 3px 4px;border-radius:8px;border:0;background:transparent;color:#45454a;display:flex;align-items:center;gap:5px;white-space:nowrap;font-size:12px}.quick-chip.active{background:#ececef;color:#1f1f22}.mini-icon,.model-icon{display:flex;align-items:center;justify-content:center;overflow:hidden;background:#f0f0f2;color:#fff;font-weight:700}.mini-icon{width:20px;height:20px;border-radius:6px}.mini-icon img,.model-icon img{width:100%;height:100%;object-fit:cover}.composer{position:relative;border:1px solid #e5e5e9;background:#f7f7f9;border-radius:13px;min-height:68px;box-shadow:0 1px 2px rgba(0,0,0,.02)}.composer textarea{display:block;width:100%;height:45px;max-height:160px;resize:none;border:0;outline:none;background:transparent;padding:13px 15px 4px;color:#19191d;line-height:22px}.composer textarea::placeholder{color:#6d6d73}.composer-actions{position:absolute;bottom:8px;display:flex;align-items:center;gap:3px}.composer-actions.left{left:10px}.composer-actions.right{right:10px}.plain-btn,.send-btn,.icon-btn{border:0;background:transparent;color:#151519;display:inline-flex;align-items:center;justify-content:center}.plain-btn{width:26px;height:26px;border-radius:7px;font-size:20px}.plain-btn:hover,.icon-btn:hover{background:#eaeaec}.send-btn{width:28px;height:28px;border-radius:8px;color:#818187;font-size:21px}.send-btn.ready{background:#111;color:#fff}.catalog{width:min(820px,calc(100vw - 100px));margin:106px auto 0}.model-section{margin-bottom:31px}.section-head{height:24px;display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.section-head h3{font-size:14px;margin:0}.section-head button{border:0;background:transparent;color:#5b57bb;font-size:12px}.model-strip{display:flex;gap:19px;overflow-x:auto;padding:2px 5px 7px;scrollbar-width:none}.model-strip::-webkit-scrollbar{display:none}.model-card{width:76px;flex:0 0 76px;border:0;background:transparent;padding:0;text-align:center;color:#111}.model-icon{width:58px;height:58px;border-radius:15px;margin:0 auto 8px;font-size:22px;background:linear-gradient(145deg,#715bea,#4e72f0);box-shadow:inset 0 0 0 1px rgba(0,0,0,.04)}.model-card:hover .model-icon{transform:translateY(-2px)}.model-card span{display:block;font-size:12px;line-height:14px;min-height:28px;overflow:hidden;word-break:break-word}.empty-models{text-align:center;color:#888;padding:55px 20px;border:1px dashed #ddd;border-radius:14px}.history-drawer{position:fixed;left:var(--rail);top:0;bottom:0;width:310px;background:#fff;border-right:1px solid #e8e8eb;z-index:25;transform:translateX(-102%);transition:transform .18s ease;padding:12px}.history-drawer.open{transform:translateX(0)}.drawer-head{display:flex;align-items:center;justify-content:space-between;height:42px}.icon-btn{width:32px;height:32px;border-radius:8px;font-size:20px}.history-search input{width:100%;border:1px solid #e6e6e9;background:#f7f7f9;border-radius:9px;padding:9px 11px;outline:none}.history-list{margin-top:10px;overflow:auto;height:calc(100vh - 105px)}.history-item{position:relative;width:100%;border:0;background:transparent;border-radius:9px;padding:10px 34px 10px 10px;text-align:left;margin-bottom:3px}.history-item:hover{background:#f5f5f7}.history-item b{display:block;font-size:13px;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.history-item small{color:#8a8a90}.history-item .delete-history{position:absolute;right:6px;top:8px;width:26px;height:26px;border:0;background:transparent;border-radius:7px}.history-item .delete-history:hover{background:#e9e9ec}.chat-view{display:none;min-height:100vh}.chat-view.active{display:block}.home-view.hidden-view{display:none}.chat-head{position:fixed;z-index:10;top:0;left:var(--rail);right:0;height:57px;border-bottom:1px solid #efeff1;background:rgba(255,255,255,.94);display:flex;align-items:center;justify-content:center;padding:0 18px}.model-head{border:0;background:transparent;border-radius:9px;height:40px;display:flex;align-items:center;gap:8px;padding:4px 10px}.model-head:hover{background:#f5f5f7}.model-head .mini-icon{width:27px;height:27px}.chat-head>.icon-btn{position:absolute;right:18px}.messages{width:min(760px,calc(100vw - 110px));margin:0 auto;padding:86px 0 170px}.message{display:grid;grid-template-columns:38px 1fr;gap:11px;margin-bottom:31px}.message.user{grid-template-columns:1fr}.message.user .message-body{justify-self:end;background:#f1f1f4;border-radius:18px;padding:10px 14px;max-width:78%}.message-assistant-icon{width:32px;height:32px;border-radius:9px;overflow:hidden;background:#5d5ce2;color:#fff;display:flex;align-items:center;justify-content:center}.message-assistant-icon img{width:100%;height:100%;object-fit:cover}.message-body{font-size:15px;line-height:1.8;white-space:pre-wrap;word-break:break-word}.message.streaming .message-body:after{content:"";display:inline-block;width:7px;height:17px;background:#999;margin-left:3px;vertical-align:-3px;animation:blink .9s infinite}@keyframes blink{50%{opacity:.2}}.chat-composer-wrap{position:fixed;left:var(--rail);right:0;bottom:0;padding:14px 24px 9px;background:linear-gradient(transparent,#fff 28%,#fff)}.chat-composer{width:min(760px,calc(100vw - 110px));margin:0 auto;background:#f7f7f9}.ai-note{text-align:center;font-size:11px;color:#929298;margin-top:7px}.profile-menu{position:fixed;right:14px;top:53px;width:240px;background:#fff;border:1px solid #e4e4e7;border-radius:13px;box-shadow:0 14px 40px rgba(0,0,0,.12);z-index:60;padding:8px;display:none}.profile-menu.open{display:block}.profile-summary{display:flex;gap:10px;align-items:center;padding:8px 7px 12px;border-bottom:1px solid #eee}.profile-summary div{min-width:0}.profile-summary b,.profile-summary small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.profile-summary small{color:#85858b;margin-top:2px}.menu-row{width:100%;border:0;background:transparent;border-radius:8px;padding:10px;text-align:left;display:flex;justify-content:space-between}.menu-row:hover{background:#f5f5f7}.modal{position:fixed;inset:0;background:rgba(20,20,24,.32);z-index:80;display:none;align-items:center;justify-content:center;padding:20px}.modal.open{display:flex}.modal-card{position:relative;width:min(420px,100%);background:#fff;border-radius:18px;padding:28px;box-shadow:0 25px 80px rgba(0,0,0,.18)}.modal-close{position:absolute;right:14px;top:12px;width:32px;height:32px;border:0;background:transparent;border-radius:8px;font-size:22px}.modal-close:hover{background:#f3f3f5}.auth-brand{display:flex;align-items:center;justify-content:center;gap:5px;height:35px}.auth-card h2{text-align:center;margin:13px 0 20px;font-size:23px}.segmented{display:grid;grid-template-columns:1fr 1fr;background:#f3f3f5;border-radius:10px;padding:3px;margin-bottom:13px}.segmented button{border:0;background:transparent;border-radius:8px;padding:8px}.segmented button.active{background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.08)}.mode-tabs{margin-top:-6px;background:transparent;padding:0;border-bottom:1px solid #eee;border-radius:0}.mode-tabs button{border-radius:0;border-bottom:2px solid transparent}.mode-tabs button.active{box-shadow:none;border-bottom-color:#111}form label{display:block;margin:13px 0}form label>span{display:block;font-size:13px;color:#555;margin-bottom:6px}form input{width:100%;height:43px;border:1px solid #dedee3;border-radius:10px;padding:0 12px;outline:none}form input:focus{border-color:#8b85db;box-shadow:0 0 0 3px rgba(103,87,229,.1)}.code-line{display:flex;gap:8px}.code-line button{flex:0 0 105px;border:1px solid #ddd;background:#fff;border-radius:10px}.primary-btn{width:100%;height:44px;border:0;border-radius:11px;background:#111;color:#fff;margin-top:7px}.switch-auth{display:block;margin:14px auto 0;border:0;background:transparent;color:#5d57bd}.model-picker-card{width:min(680px,100%)}.model-picker{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;max-height:62vh;overflow:auto}.model-picker .model-card{width:auto}.toast{position:fixed;left:50%;bottom:40px;transform:translate(-50%,20px);z-index:100;background:#151517;color:#fff;border-radius:10px;padding:10px 15px;font-size:13px;opacity:0;pointer-events:none;transition:.18s}.toast.show{opacity:1;transform:translate(-50%,0)}@media(max-width:760px){:root{--rail:0px}.rail{display:none}.workspace{margin-left:0}.topbar{left:0}.home-view{padding:110px 16px 40px}.hero{width:100%}.brand-lockup{margin-bottom:35px}.brand-lockup h1{font-size:43px}.catalog{width:100%;margin-top:68px}.model-strip{gap:11px}.chat-head{left:0}.messages,.chat-composer{width:calc(100vw - 28px)}.chat-composer-wrap{left:0;padding-left:14px;padding-right:14px}.history-drawer{left:0;width:min(88vw,330px)}.model-picker{grid-template-columns:repeat(3,1fr)}.top-profile span:last-child{display:none}}@media(min-width:1600px){.home-view{padding-top:150px}.catalog{margin-top:106px}}

/* v1.2.0: 可管理品牌、动态菜单、Markdown 与停止生成 */
.rail-brand{position:relative;width:100%;height:42px;display:flex;align-items:center;justify-content:center}.rail-site-name{position:fixed;left:46px;top:10px;z-index:31;max-width:150px;height:31px;display:flex;align-items:center;padding:0 8px;font-size:15px;font-weight:700;letter-spacing:-.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;pointer-events:none}.site-logo-slot{display:inline-flex;align-items:center;justify-content:center}.custom-site-logo{display:block;max-width:100%;max-height:100%;object-fit:contain}.rail-logo .site-logo-slot{width:34px;height:34px}.hero-logo-slot{width:58px;height:50px}.auth-logo-slot{width:30px;height:30px}.rail-menu-icon{font-size:18px;line-height:1}.rail-nav{overflow-y:auto;scrollbar-width:none}.rail-nav::-webkit-scrollbar{display:none}.send-btn.stop-btn{background:#111;color:#fff!important;border-radius:50%;font-size:11px;line-height:1;box-shadow:none}.send-btn.stop-btn:hover{transform:scale(1.04)}.message.stopped .message-body{opacity:.9}.markdown-body{white-space:normal;line-height:1.75}.markdown-body>:first-child{margin-top:0}.markdown-body>:last-child{margin-bottom:0}.markdown-body p{margin:0 0 14px}.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4,.markdown-body h5,.markdown-body h6{line-height:1.35;margin:22px 0 10px;font-weight:700}.markdown-body h1{font-size:24px}.markdown-body h2{font-size:21px}.markdown-body h3{font-size:18px}.markdown-body h4{font-size:16px}.markdown-body h5,.markdown-body h6{font-size:15px}.markdown-body ul,.markdown-body ol{margin:8px 0 15px;padding-left:25px}.markdown-body li{margin:4px 0}.markdown-body blockquote{margin:12px 0;padding:8px 13px;border-left:3px solid #d7d7dc;background:#f7f7f9;color:#555;border-radius:0 8px 8px 0}.markdown-body hr{border:0;border-top:1px solid #e4e4e8;margin:20px 0}.markdown-body a{color:#5351b9;text-decoration:none}.markdown-body a:hover{text-decoration:underline}.markdown-body code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-size:.9em;background:#f0f0f3;border-radius:5px;padding:2px 5px}.code-block{margin:14px 0;border:1px solid #dedee3;border-radius:11px;overflow:hidden;background:#151518}.code-head{height:36px;display:flex;align-items:center;justify-content:space-between;padding:0 11px;background:#26262b;color:#c7c7cc;font-size:12px}.code-head button{border:0;background:transparent;color:#d9d9dd;border-radius:6px;padding:5px 8px;cursor:pointer}.code-head button:hover{background:#38383e}.code-block pre{margin:0;padding:15px 16px;overflow:auto;line-height:1.65;tab-size:2}.code-block pre code{display:block;padding:0;background:transparent;color:#ececf0;border-radius:0;font-size:13px;white-space:pre;word-break:normal}.markdown-table-wrap{width:100%;overflow:auto;margin:14px 0;border:1px solid #e2e2e6;border-radius:10px}.markdown-table-wrap table{width:100%;border-collapse:collapse;min-width:420px}.markdown-table-wrap th,.markdown-table-wrap td{padding:9px 11px;border-right:1px solid #e8e8eb;border-bottom:1px solid #e8e8eb;text-align:left;vertical-align:top;font-size:13px}.markdown-table-wrap th{background:#f6f6f8;font-weight:650}.markdown-table-wrap tr:last-child td{border-bottom:0}.markdown-table-wrap th:last-child,.markdown-table-wrap td:last-child{border-right:0}.message.streaming .markdown-body:after{vertical-align:-3px}.message.user .message-body{white-space:pre-wrap}
@media(max-width:760px){.rail-site-name{display:none}.markdown-body h1{font-size:21px}.markdown-body h2{font-size:19px}.code-block pre{padding:13px}.markdown-table-wrap{max-width:calc(100vw - 75px)}}