/* 参考图的三栏工作台；尺寸按真实页面内容自适应，不使用截图背景。 */
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*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,a,input,textarea{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #93a8f1;outline-offset:3px}input:focus,textarea:focus,select:focus{outline:2px solid #b8c6f3;outline-offset:1px}button{border:0;background:none;color:inherit}a{color:#5470d0;text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,p{margin-top:0}h1{font-size:32px;line-height:1.4;letter-spacing:-1px}h2{font-size:20px}h3{font-size:17px;line-height:1.7}p{line-height:1.8}svg{width:19px;height:19px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}[hidden]{display:none!important}.muted{color:var(--muted)}.error{color:#b6454e;font-size:13px;white-space:pre-wrap;overflow-wrap:anywhere}.error:empty{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:24px;padding:11px 18px;white-space:nowrap;font-size:13px;transition:background .15s,transform .15s}.primary{background:var(--ink);color:white;box-shadow:0 2px 4px #11132918;border:1px solid #33364d}.primary:hover:not(:disabled){background:#292e4c;transform:translateY(-1px)}.secondary{background:#fff;border:1px solid #e5e5eb;box-shadow:0 2px 4px #16162904}.secondary:hover:not(:disabled){background:#f2f4fa}.wide{width:100%}.text-button{padding:10px;color:#697db9;font-size:13px}.icon-button{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;color:#868894;font-size:22px}.icon-button:hover{background:#f0f1f6;color:var(--ink)}.danger{color:#b54c54}.pill{font-size:10px;border:1px solid #e4e5ed;background:#f8f8fa;border-radius:5px;padding:3px 7px;color:#878999;white-space:nowrap}.orb{display:inline-block;width:54px;height:54px;flex-shrink:0;border-radius:50%;background:linear-gradient(175deg,#d9dfff 0%,#91a4fb 38%,#5e86ed 65%,#a4ceff 100%);box-shadow:inset 0 2px 7px #ffffffa6,0 5px 18px #8ba5eb15}.orb.small{width:38px;height:38px}.eyebrow{font-size:10px;letter-spacing:1.8px;color:#9b9da9;display:block}.button-row{display:flex;gap:8px;flex-wrap:wrap}.loading-screen{min-height:100dvh;display:flex;align-items:center;justify-content:center;flex-direction:column;color:var(--muted);gap:20px}.mobile-only{display:none}
/* 登录页与初始化入口。 */
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/* 桌面三栏布局：图标导航、历史会话、主工作区。 */
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#e8e8eb;display:flex;flex-direction:column;overflow:hidden}.intro-card{background:linear-gradient(125deg,#30343a,#242831);color:#fff;box-shadow:0 5px 12px #171c2909}.card-kicker{display:flex;gap:7px;align-items:center;font-size:10px;font-weight:400;margin-bottom:17px;color:#8c909c}.intro-card .card-kicker{color:#c5c9d6}.mini-orb{width:13px;height:13px;border-radius:50%;background:linear-gradient(#c8d5ff,#689ef0)}.tiny-tag{margin-left:auto;background:#628fe8;color:white;font-size:9px;border-radius:5px;padding:3px 6px}.intro-card h3{font-size:16px;font-weight:450;margin-bottom:9px}.intro-card p{font-size:11px;color:#aeb3c1;line-height:1.9;margin-bottom:15px}.intro-footer{margin-top:auto;font-size:10px;color:#b5bfd8;display:flex;justify-content:space-between}.prompt-card{background:white}.prompt-card .card-kicker{margin-bottom:9px}.prompt{padding:10px 0;display:flex;justify-content:space-between;gap:5px;font-size:11px;line-height:1.5;text-align:left;border-bottom:1px solid 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#0002;z-index:20;white-space:pre-wrap}.sidebar-shade{display:none}@keyframes pulse{50%{opacity:.35}}
@media(min-width:1600px){.workspace{grid-template-columns:70px 285px minmax(0,1fr)}.welcome{padding-top:8vh}.welcome-cards article{min-height:210px}}
@media(max-width:1150px){.workspace{width:calc(100% - 24px);margin:12px;height:calc(100dvh - 24px);grid-template-columns:54px 215px minmax(0,1fr);border-width:6px;border-radius:24px}.sidebar{padding:22px 12px 12px}.welcome{padding:28px 22px 18px}.welcome-cards{gap:10px}.welcome-cards article{padding:15px;min-height:180px}.tip-card{display:none!important}.welcome-cards{grid-template-columns:1fr 1fr}.composer-wrap{padding:14px 23px}.welcome>p{margin-bottom:26px}.welcome h1{font-size:27px}.welcome-chips{gap:7px}.welcome-chips>span{font-size:9px;padding:9px 11px}.content-view{padding:24px}.topbar{padding:0 19px}}
@media(max-width:760px){.workspace{margin:0;width:100%;height:100dvh;min-height:0;border:0;border-radius:0;grid-template-columns:47px minmax(0,1fr)}.rail{padding:20px 0 16px;gap:20px}.rail-button{width:35px;height:35px}.orb.small{width:29px;height:29px}.avatar{width:32px;height:32px}.sidebar{position:fixed;top:0;bottom:0;left:47px;width:min(280px,calc(100vw - 70px));background:white;z-index:12;transform:translateX(-120%);transition:transform .2s;box-shadow:10px 0 40px #161b3214}.sidebar.open{transform:translateX(0)}.sidebar-shade:not([hidden]){display:block;position:fixed;inset:0;background:#151b3533;z-index:11}.main{grid-column:2}.mobile-only{display:inline-flex}.search-symbol{display:none}.topbar{height:65px;padding:0 12px}.topbar-title{gap:5px}.topbar-title strong{font-size:12px}.topbar-title .pill{display:none}.topbar-actions{gap:5px}.topbar-actions .secondary{display:none}.topbar-actions .primary{font-size:10px;padding:7px 10px}.view{margin:0 5px 0;border-radius:12px 0 0 0}.welcome{padding:28px 15px 14px}.hero-orb{width:45px;height:45px;margin-bottom:17px}.welcome>.eyebrow{font-size:6px;letter-spacing:.8px}.welcome h1{font-size:23px}.welcome>p{font-size:11px;margin-bottom:25px}.welcome-cards{grid-template-columns:1fr}.welcome-cards article{min-height:auto}.intro-card{display:none!important}.prompt-card .prompt{font-size:11px;padding:11px 0}.welcome-chips{display:none}.composer-wrap{padding:12px 10px 10px}.composer{border-radius:17px;padding:13px 12px 10px}.composer textarea{font-size:13px;min-height:65px}.composer-footer{gap:7px}.composer-footer>.muted{display:none}.composer-footer .primary{margin-left:auto}.scope{font-size:9px;padding:7px}.composer-note{display:block;text-align:center;font-size:8px;line-height:1.7}.composer-note span{display:block}.messages{padding:20px 13px}.question-bubble{max-width:90%;font-size:12px}.answer-row{gap:8px}.answer-row .orb{width:22px;height:22px}.answer-text{font-size:12px}.answer-images img{max-width:100%;max-height:230px}.content-view{padding:20px 13px}.section-heading{align-items:flex-start;flex-direction:column;gap:12px}.section-heading h1{font-size:22px}.base-grid{grid-template-columns:1fr}.item-row{gap:9px;flex-wrap:wrap;padding:13px}.item-icon{display:none}.item-actions{width:100%;justify-content:flex-start}.upload-zone{padding:13px;gap:9px}.upload-zone>svg{display:none}.session-delete{opacity:1}.auth-screen{display:block;padding:30px 18px}.auth-story{display:none}.auth-card{padding:30px;max-width:420px;margin:5vh auto}.toast{bottom:18px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}