.appearance-page{padding-top:clamp(64px,8vw,110px)}.container{width:min(1180px,100% - 40px)}.lab-hero{border-bottom:1px solid var(--line);padding-bottom:clamp(38px,5vw,60px)}.lab-hero h1{max-width:1100px;margin:20px 0 26px}.hero-intro{max-width:850px;color:var(--text-muted);margin:0;font-size:clamp(1.08rem,1.8vw,1.35rem);line-height:1.65}.step,.source-card em,.boundary-grid article>span{color:var(--sd-signal);letter-spacing:.06em;text-transform:uppercase;font-family:Source Code Pro Variable,monospace;font-size:.72rem}.hero-limit{max-width:850px;color:var(--text-muted);margin:20px 0 0;font-size:.9rem}.hero-tool-cta{cursor:pointer;border:0;margin-top:clamp(38px,5vw,60px)}.simulator,.decision-boundary{padding-block:clamp(64px,9vw,110px)}.lab-shell{border-radius:var(--radius-lg);overflow:hidden}.source-panel{box-sizing:border-box;gap:20px;width:min(820px,100%);margin-inline:auto;padding:clamp(24px,5vw,52px);display:grid}.panel-heading,.surface-nav-heading,.preview-heading,.result-toolbar{justify-content:space-between;align-items:center;gap:20px;display:flex}.panel-heading>div,.surface-nav-heading{align-items:center;gap:12px;display:flex}.panel-heading h3{margin:0;font-size:1.3rem}.text-action{color:var(--text-muted);font:inherit;text-underline-offset:4px;cursor:pointer;background:0 0;border:0;font-size:.78rem;text-decoration:underline}.field-grid{grid-template-columns:1fr 1.35fr;gap:14px;display:grid}.field-grid .form-field{position:relative}.source-panel .form-field-label>span{font-weight:550}.source-panel input::placeholder,.source-panel textarea::placeholder{color:var(--text-muted);opacity:.82}.source-panel input:focus::placeholder,.source-panel textarea:focus::placeholder{color:#0000}.source-panel .form-field-helper b{font-weight:500}.source-panel .form-field-error{position:absolute;top:calc(100% + 3px);left:0}.source-panel code,.method code{border:1px solid color-mix(in srgb,var(--sd-signal) 30%,transparent);background:color-mix(in srgb,var(--sd-signal) 8%,transparent);border-radius:5px;padding:2px 5px;font-family:Source Code Pro Variable,monospace;font-size:.82em}.form-action{justify-content:flex-end;padding-top:6px;display:flex}.form-action .primary-action{cursor:pointer;border:0}.form-action .primary-action:disabled{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none}.source-panel{width:100%;padding:clamp(20px,4vw,38px)}.query-field input{border-color:var(--line);box-shadow:none}.experience-panel{min-width:0;padding:clamp(20px,4vw,38px);scroll-margin-top:112px}.experience-panel[hidden],.source-panel[hidden]{display:none}.result-toolbar{justify-content:flex-end;margin-bottom:15px}.edit-source-action{flex:none;padding:10px 16px;font-size:.78rem}.surface-nav-wrap{border-bottom:1px solid var(--line);margin-bottom:4px;padding-bottom:20px}.surface-nav{scrollbar-width:thin;gap:8px;padding:2px 1px 5px;display:flex;overflow-x:auto}.surface-nav button{border:1px solid var(--line);color:var(--text-muted);font:inherit;cursor:pointer;background:0 0;border-radius:999px;flex:none;padding:9px 13px;font-size:.76rem}.surface-nav button[aria-selected=true]{border-color:color-mix(in srgb,var(--sd-signal) 52%,var(--line));background:color-mix(in srgb,var(--sd-signal) 10%,transparent);color:var(--text)}.preview-stage{padding:clamp(24px,4vw,40px) 0 0;overflow:hidden}.preview-heading{align-items:flex-start}.preview-heading h3{letter-spacing:-.035em;margin:8px 0 0;font-size:clamp(1.35rem,2.5vw,2rem);font-weight:520}.preview-heading .eyebrow{margin:0}.surface-summary{max-width:700px;color:var(--text-muted);margin:18px 0 30px;line-height:1.6}.surface-panel[hidden]{display:none}.surface-panel.is-active{animation:.3s cubic-bezier(.16,1,.3,1) surface-in}@keyframes surface-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.scenario-controls{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:6px;padding:6px;display:grid}.scenario-controls fieldset{border:0;min-width:0;margin:0;padding:0}.scenario-controls legend{color:var(--text-muted);margin-bottom:7px;font-size:.76rem}.scenario-status{min-height:2.8em;color:var(--text-muted);margin:0 6px 20px;font-size:.72rem;line-height:1.45}.classic-frame{width:100%;transition:max-width .25s}.classic-frame[data-preview-width=mobile]{max-width:390px;margin-inline:auto}.classic-result{border:1px solid var(--line);border-radius:var(--radius-lg);background:color-mix(in srgb,var(--surface) 84%,transparent);padding:30px}.site-identity{align-items:center;gap:11px;display:flex}.site-identity>span:last-child{gap:2px;display:grid}.site-identity strong{font-size:.82rem}.site-identity small{color:var(--text-muted);font-size:.72rem}.favicon{border:1px solid var(--line);width:30px;height:30px;color:var(--sd-signal);border-radius:50%;place-items:center;font-weight:650;display:grid;overflow:hidden}.favicon img{object-fit:contain;width:18px;height:18px}.favicon img[hidden],.favicon span[hidden]{display:none}.classic-result>a{-webkit-line-clamp:1;color:var(--sd-signal);-webkit-box-orient:vertical;margin:14px 0 7px;font-size:clamp(1.18rem,2.4vw,1.45rem);line-height:1.3;display:-webkit-box;overflow:hidden}.classic-result>p{-webkit-line-clamp:2;color:var(--text-muted);-webkit-box-orient:vertical;margin:0;font-size:.9rem;line-height:1.5;display:-webkit-box;overflow:hidden}.classic-frame[data-preview-width=mobile] .classic-result>a{-webkit-line-clamp:2}.classic-frame[data-preview-width=mobile] .classic-result>p{-webkit-line-clamp:4}.rich-preview{border:1px solid color-mix(in srgb,var(--sd-signal) 32%,var(--line));background:color-mix(in srgb,var(--sd-signal) 6%,transparent);border-radius:12px;margin-top:20px;padding:15px}.rich-preview[hidden]{display:none}.rich-preview>span{color:var(--sd-signal);letter-spacing:.05em;text-transform:uppercase;font-family:Source Code Pro Variable,monospace;font-size:.62rem}.rich-preview p{color:var(--text);align-items:center;gap:8px;margin:9px 0 5px;font-size:.78rem;display:flex}.rich-preview p b{font-weight:600}.rich-preview p i{color:var(--sd-signal);font-style:normal}.rich-preview small{color:var(--text-muted);font-size:.66rem;line-height:1.45;display:block}.rich-example{border-top:1px solid var(--line);color:var(--text-muted);justify-content:space-between;align-items:center;gap:10px;margin-top:19px;padding-top:16px;font-size:.72rem;display:flex}.rich-example button{color:var(--sd-signal);font:inherit;cursor:pointer;background:0 0;border:0}.width-note{color:var(--text-muted);margin:12px 2px 0;font-size:.72rem;line-height:1.45}.rewrite-disclosure{margin-top:18px}.rewrite-content{padding-top:18px}.rewrite-content>p:first-child{color:var(--text-muted);margin:0 6px 12px;font-size:.72rem;line-height:1.5}.rewrite-content .scenario-status{margin-bottom:4px}.simulation-badge{align-items:center;gap:12px;margin-bottom:20px;display:flex}.simulation-badge span{border:1px solid color-mix(in srgb,var(--sd-signal) 38%,var(--line));border-radius:999px;padding:6px 9px}.simulation-badge p{color:var(--text-muted);margin:0;font-size:.74rem}.answer-card,.conversation-card,.copilot-card,.fanout-flow{border:1px solid var(--line);border-radius:var(--radius-lg);background:color-mix(in srgb,var(--surface) 84%,transparent);padding:clamp(22px,4vw,34px)}.prompt-line{gap:6px;margin:0 0 26px;display:grid}.prompt-line span{color:var(--text-muted);font-size:.72rem}.answer-card h4{margin:0 0 12px;font-size:1.25rem}.answer-card>p:not(.prompt-line),.flow-answer p,.copilot-answer p{color:var(--text-muted);line-height:1.65}.source-strip,.source-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin-top:24px;display:grid}.source-card{border:1px solid var(--line);background:color-mix(in srgb,var(--surface) 75%,transparent);border-radius:12px;align-items:center;gap:9px;min-width:0;padding:12px;display:flex;position:relative}.source-icon{background:color-mix(in srgb,var(--sd-signal) 12%,transparent);width:25px;height:25px;color:var(--sd-signal);border-radius:7px;flex:none;place-items:center;font-size:.7rem;display:grid}.source-card>span:nth-child(2){gap:3px;min-width:0;display:grid}.source-card strong,.source-card small{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.source-card strong{font-size:.72rem;font-weight:550}.source-card small{color:var(--text-muted);font-size:.64rem}.source-card em{background:var(--surface);border-radius:4px;padding:2px 5px;font-size:.5rem;font-style:normal;position:absolute;top:-9px;right:7px}.overview-title{align-items:center;gap:10px;display:flex}.overview-title svg{fill:none;width:24px;height:24px;stroke:var(--sd-signal);stroke-width:1.4px;stroke-linecap:round;stroke-linejoin:round}.source-card.user-source{border-color:color-mix(in srgb,var(--sd-signal) 58%,var(--line));box-shadow:none}.source-icon{overflow:hidden}.source-icon img{object-fit:contain;width:16px;height:16px}.source-icon img[hidden],.source-icon span[hidden]{display:none}.favicon-fallback{place-items:center;display:grid}.favicon-fallback svg{fill:none;stroke:currentColor;stroke-width:1.25px;stroke-linecap:round;stroke-linejoin:round;width:17px;height:17px}.education-note{border-top:1px solid var(--line);margin-top:18px;padding:18px 20px}.education-note strong{font-size:.85rem}.education-note p{color:var(--text-muted);margin:7px 0 0;font-size:.78rem;line-height:1.55}.fanout-flow{justify-items:center;gap:12px;display:grid}.fanout-flow>i{color:var(--sd-signal);font-style:normal}.flow-query,.flow-answer,.flow-sources,.retrieval-paths{box-sizing:border-box;border:1px solid var(--line);border-radius:14px;width:100%;padding:17px}.flow-query,.flow-answer{gap:7px;display:grid}.flow-answer p{margin:0}.retrieval-paths>div{grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px;display:grid}.retrieval-paths>div span{background:color-mix(in srgb,var(--sd-signal) 7%,transparent);border-radius:9px;padding:10px;font-size:.72rem}.flow-sources .source-card{margin-top:12px}.user-message{background:color-mix(in srgb,var(--sd-signal) 10%,transparent);border-radius:16px 16px 4px;max-width:78%;margin:0 0 25px auto;padding:12px 16px;font-size:.85rem}.assistant-message{gap:12px;display:flex}.answer-mark{color:var(--sd-signal)}.assistant-message p{color:var(--text-muted);margin:0;line-height:1.65}.assistant-message sup{background:color-mix(in srgb,var(--sd-signal) 15%,transparent);width:18px;height:18px;color:var(--sd-signal);border-radius:50%;place-items:center;display:inline-grid}.conversation-card details{border-top:1px solid var(--line);margin-top:26px;padding-top:18px}.conversation-card summary{cursor:pointer}.conversation-card summary span{color:var(--sd-signal)}.copilot-card{grid-template-columns:1.35fr .8fr;gap:20px;display:grid}.reference-card{border-left:1px solid var(--line);padding-left:20px}.reference-card .source-card{margin-top:14px}.compare-grid{grid-template-columns:1fr auto 1fr;align-items:stretch;gap:18px;display:grid}.compare-grid>article{border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px}.compare-grid h4{margin:9px 0 18px;font-size:1.2rem}.compare-grid ul{color:var(--text-muted);padding-left:18px;font-size:.78rem;line-height:1.55}.mini-result,.mini-answer{background:color-mix(in srgb,var(--surface) 72%,transparent);border-radius:12px;min-height:175px;padding:16px}.mini-result{align-content:start;gap:8px;display:grid}.mini-result small{color:var(--text-muted)}.mini-result strong{color:var(--sd-signal)}.mini-result p,.mini-answer>p{-webkit-line-clamp:3;color:var(--text-muted);-webkit-box-orient:vertical;margin:0;font-size:.75rem;line-height:1.5;display:-webkit-box;overflow:hidden}.mini-answer .source-card{margin-top:14px}.role-shift{color:var(--text-muted);text-transform:uppercase;align-content:center;justify-items:center;gap:7px;font-family:Source Code Pro Variable,monospace;font-size:.62rem;display:grid}.role-shift i{color:var(--sd-signal);font-style:normal}.ai-mode-card{border:1px solid var(--line);border-radius:var(--radius-lg);background:color-mix(in srgb,var(--surface) 84%,transparent);padding:clamp(22px,4vw,34px)}.ai-mode-layout{grid-template-columns:minmax(0,1.35fr) minmax(220px,.75fr);align-items:start;gap:28px;display:grid}.ai-mode-response{min-width:0}.ai-mode-response>p{color:var(--text-muted);margin:0;line-height:1.7}.ai-mode-response h4{margin:26px 0 10px;font-size:1rem}.ai-mode-response ul{color:var(--text-muted);margin:0;padding-left:20px;line-height:1.65}.ai-mode-response li+li{margin-top:7px}.citation-link{background:color-mix(in srgb,var(--sd-signal) 14%,transparent);width:19px;height:19px;color:var(--sd-signal);vertical-align:-4px;border-radius:50%;place-items:center;margin-left:3px;display:inline-grid}.citation-link svg{fill:none;stroke:currentColor;stroke-width:1.45px;stroke-linecap:round;stroke-linejoin:round;width:13px;height:13px}.ai-mode-sources{border-left:1px solid var(--line);padding-left:22px}.ai-mode-sources>span{color:var(--sd-signal);letter-spacing:.06em;text-transform:uppercase;font-family:Source Code Pro Variable,monospace;font-size:.7rem}.ai-mode-sources>div{gap:10px;margin-top:14px;display:grid}.ai-mode-composer{border:1px solid var(--line);background:color-mix(in srgb,var(--surface-solid) 82%,transparent);min-height:118px;color:var(--text-muted);box-sizing:border-box;border-radius:28px;align-content:space-between;margin-top:28px;padding:18px 16px 14px;font-size:.92rem;display:grid}.ai-mode-composer>div{justify-content:space-between;align-items:center;width:100%;margin-top:24px;display:flex}.ai-mode-composer i{background:color-mix(in srgb,var(--sd-signal) 16%,transparent);width:42px;height:42px;color:var(--text);border-radius:50%;place-items:center;font-size:1.5rem;font-style:normal;display:grid}.ai-mode-composer>div svg{fill:none;stroke:currentColor;stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;width:23px;height:23px;margin-right:5px}.chatgpt-answer{color:var(--text-muted);line-height:1.72}.chatgpt-answer p{margin:0 0 18px}.inline-source-group{vertical-align:middle;white-space:nowrap;align-items:center;gap:4px;display:inline-flex}.inline-source{background:color-mix(in srgb,var(--sd-signal) 9%,var(--surface-solid));color:var(--text-muted);vertical-align:2px;white-space:nowrap;border-radius:999px;align-items:center;gap:5px;margin-inline:4px;padding:3px 7px 3px 4px;font-size:.68rem;line-height:1.2;display:inline-flex}.inline-source-group .inline-source{margin:0}.inline-source-icon{background:color-mix(in srgb,var(--sd-signal) 14%,transparent);width:18px;height:18px;color:var(--sd-signal);border-radius:50%;place-items:center;display:grid;overflow:hidden}.inline-source-icon img{object-fit:contain;width:13px;height:13px}.inline-source-icon img[hidden],.inline-source-icon span[hidden]{display:none}.inline-source-icon .favicon-fallback svg{width:13px;height:13px}.user-inline-source{box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--sd-signal) 35%,transparent)}.inline-source-count{background:color-mix(in srgb,var(--sd-signal) 9%,var(--surface-solid));width:25px;height:25px;color:var(--text-muted);border-radius:50%;place-items:center;font-size:.62rem;display:inline-grid}.chatgpt-source-row,.chatgpt-actions{align-items:center;gap:8px;display:flex}.chatgpt-source-row{margin-top:25px}.chatgpt-actions{color:var(--text-muted);margin-top:17px}.chatgpt-actions svg{fill:none;stroke:currentColor;stroke-width:1.35px;stroke-linecap:round;stroke-linejoin:round;width:19px;height:19px}.chatgpt-composer{border:1px solid var(--line);background:color-mix(in srgb,var(--surface-solid) 86%,transparent);min-height:58px;color:var(--text-muted);border-radius:999px;grid-template-columns:auto minmax(0,1fr) auto auto auto;align-items:center;gap:12px;margin-top:34px;padding:8px 9px 8px 16px;font-size:.82rem;display:grid}.chatgpt-composer>i{color:var(--text);font-size:1.4rem;font-style:normal}.chatgpt-composer>b{align-items:center;gap:4px;font-size:.7rem;font-weight:450;display:flex}.chatgpt-composer svg{fill:none;stroke:currentColor;stroke-width:1.45px;stroke-linecap:round;stroke-linejoin:round;width:19px;height:19px}.chatgpt-composer>b svg{width:14px;height:14px}.chatgpt-composer .composer-send{background:var(--text);width:38px;height:38px;color:var(--surface-solid);border-radius:50%;place-items:center;display:grid}.copilot-conversation{border:1px solid var(--line);border-radius:var(--radius-lg);background:color-mix(in srgb,var(--surface) 84%,transparent);padding:clamp(22px,4vw,34px)}.copilot-date{color:var(--text-muted);align-items:center;gap:12px;margin-bottom:28px;font-size:.72rem;display:flex}.copilot-date span{background:var(--line);flex:1;height:1px}.copilot-response{color:var(--text-muted);line-height:1.7}.copilot-response>p{margin:0}.copilot-response section{border-top:1px solid var(--line);margin-top:28px;padding-top:24px}.copilot-response h4{color:var(--text);margin:0 0 16px;font-size:1.05rem}.copilot-response ul{gap:13px;margin:0;padding-left:20px;display:grid}.copilot-response li::marker{color:var(--sd-signal)}.copilot-response strong{color:var(--text);font-weight:600}.copilot-citation{background:color-mix(in srgb,var(--sd-signal) 10%,var(--surface-solid));color:var(--text-muted);vertical-align:2px;white-space:nowrap;border-radius:7px;align-items:center;margin-inline:3px;padding:4px 7px;font-size:.62rem;line-height:1.2;display:inline-flex}.copilot-composer{border:1px solid color-mix(in srgb,var(--sd-signal) 30%,var(--line));background:color-mix(in srgb,var(--surface-solid) 88%,transparent);min-height:112px;box-shadow:inset 0 0 0 4px color-mix(in srgb,var(--sd-signal) 5%,transparent);color:var(--text-muted);border-radius:24px;gap:24px;margin-top:32px;padding:16px 14px 12px 18px;font-size:.85rem;display:grid}.copilot-composer>div,.copilot-composer>div>span,.copilot-composer b{align-items:center;display:flex}.copilot-composer>div{justify-content:space-between}.copilot-composer>div>span{gap:8px}.copilot-composer i{border:1px solid var(--line);width:36px;height:36px;color:var(--text);border-radius:50%;place-items:center;font-size:1.35rem;font-style:normal;display:grid}.copilot-composer b{border:1px solid var(--line);color:var(--text);border-radius:999px;gap:5px;padding:8px 10px;font-size:.7rem;font-weight:500}.copilot-composer svg{fill:none;stroke:currentColor;stroke-width:1.45px;stroke-linecap:round;stroke-linejoin:round;width:20px;height:20px}.copilot-composer b svg{width:14px;height:14px}.surface-reference{border-top:1px solid var(--line);padding-block:clamp(64px,9vw,105px)}.method-review{border-bottom:1px solid var(--line);letter-spacing:.03em;flex-wrap:wrap;justify-content:space-between;gap:8px;padding-bottom:14px;font-family:Source Code Pro Variable,monospace;display:flex;font-size:.68rem!important}.method-review time{color:var(--text)}.decision-boundary{border-top:1px solid var(--line)}.boundary-grid{grid-template-columns:1fr 1fr;gap:20px;display:grid}.boundary-grid article,.eligibility-note{border-radius:var(--radius-lg);padding:clamp(25px,4vw,40px)}.boundary-grid article>.eyebrow{margin:0}.boundary-grid h3,.eligibility-note h3{margin:12px 0;font-size:clamp(1.35rem,2.5vw,2rem);font-weight:520}.boundary-grid ul{color:var(--text-muted);margin:20px 0 0;padding-left:19px;line-height:1.8}.eligibility-note{margin-top:20px}.eligibility-note>p:last-child{max-width:820px;color:var(--text-muted);margin:0;line-height:1.7}.method{border-top:1px solid var(--line);grid-template-columns:.8fr 1.2fr;gap:clamp(40px,8vw,100px);padding-block:clamp(64px,9vw,110px);display:grid}.method h2{letter-spacing:-.05em;margin:15px 0 0;font-size:clamp(2rem,4vw,3.2rem);font-weight:500}.method-copy>p{color:var(--text-muted);margin:0 0 18px;line-height:1.72}.source-links{margin-top:32px}.source-links ul{color:var(--text-muted);margin:0;padding-left:18px;line-height:1.9}.source-links a{color:var(--text);text-decoration-line:underline;text-decoration-color:var(--sd-signal);text-underline-offset:4px;text-decoration-thickness:1px}.next-step{grid-template-columns:1fr auto;align-items:end;gap:30px;display:grid}.next-step h2{letter-spacing:-.04em;max-width:730px;margin:12px 0;font-size:clamp(1.8rem,3.5vw,3rem);font-weight:520}.next-step p:last-child{max-width:730px;color:var(--text-muted);line-height:1.65}:is(button,input,textarea,select,a):focus-visible{outline:2px solid var(--sd-signal);outline-offset:3px}@media (width<=980px){.method,.ai-mode-layout{grid-template-columns:1fr}.ai-mode-sources{border-left:0;border-top:1px solid var(--line);padding:18px 0 0}}@media (width<=700px){.container{width:min(100% - 28px,1180px)}.field-grid,.scenario-controls,.boundary-grid,.source-strip,.source-list{grid-template-columns:1fr}.panel-heading,.result-toolbar{align-items:flex-start}.result-toolbar{flex-direction:column-reverse;gap:14px}.preview-heading{display:grid}.classic-result{padding:22px}.classic-result>a{-webkit-line-clamp:2}.classic-result>p{-webkit-line-clamp:4}.preview-stage{min-height:0;padding-top:22px}.surface-nav-wrap{margin-inline:0}.source-panel,.experience-panel{padding:22px}.form-action{justify-content:stretch}.form-action .primary-action{justify-content:center;width:100%}.next-step{grid-template-columns:1fr;align-items:start}.chatgpt-composer{grid-template-columns:auto minmax(0,1fr) auto auto}.chatgpt-composer>b{display:none}.chatgpt-source-row{flex-wrap:wrap}}@media (prefers-reduced-motion:reduce){.surface-panel.is-active{animation:none}.classic-frame{transition:none}}