:root{--paper:#fafaf7;--ink:#182326;--blue:#17647e;--blue2:#27829c;--ice:#52acd0;--muted:#5b6d72;--rule:#d8e0df;--serif:Georgia,'Times New Roman',serif;--sans:-apple-system,BlinkMacSystemFont,'Helvetica Neue',Arial,sans-serif;--ease:cubic-bezier(.2,.75,.25,1)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 var(--sans);-webkit-font-smoothing:antialiased}button,input,textarea{font:inherit}button{color:inherit;cursor:pointer}button,a,input,textarea,summary{-webkit-tap-highlight-color:transparent}a{color:inherit;text-underline-offset:4px}button{border:0;background:none}button:disabled{cursor:not-allowed}button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--blue2);outline-offset:5px}textarea:focus{outline:none}button svg,a svg{display:block;flex:none}button{touch-action:manipulation}svg{max-width:100%}[hidden]{display:none!important}.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}.skip-link{position:fixed;top:-60px;left:20px;z-index:1000;padding:12px 20px;background:var(--ink);color:white}.skip-link:focus{top:12px}.app-shell{max-width:1440px;margin:auto;padding:0 clamp(24px,5.7vw,86px)}.app-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:91px;border-bottom:1px solid var(--rule)}.app-logo{display:flex;align-items:center;min-height:44px;padding:0}.app-logo img{width:158px;height:auto;display:block}.app-bar-right{display:flex;align-items:center;gap:27px}.app-nav-button{font-size:13px;min-height:44px;display:flex;align-items:center;gap:9px;padding:0}.app-nav-button:hover{color:var(--blue)}.status-dot{width:5px;height:5px;border-radius:50%;background:var(--blue2);display:inline-block}.preview-label{font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:8px}.preview-label:hover{color:var(--blue)}.circle-arrow{width:27px;height:27px;border:1px solid #c4d3d5;border-radius:50%;display:grid;place-items:center}.circle-arrow svg{width:13px;height:13px}.home-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,1fr);gap:30px;align-items:center;padding:53px 0 58px;min-height:620px}.home-intro{position:relative;z-index:2}.eyebrow{font-size:10px;text-transform:uppercase;letter-spacing:.16em;color:var(--blue);font-weight:600;margin:0 0 24px;display:flex;align-items:center;gap:10px}.eyebrow:before{content:'';width:24px;height:1px;background:currentColor}.hero-title{font-family:var(--serif);font-size:clamp(45px,4.8vw,70px);line-height:1.05;font-weight:400;letter-spacing:-.055em;margin:0 0 23px;max-width:680px}.hero-title em{font-weight:400;color:var(--blue)}.hero-intro{font-size:15px;line-height:1.7;color:var(--muted);max-width:440px;margin:0 0 29px}.query-box{position:relative;z-index:25;max-width:650px}.query-form{background:#fff;position:relative;display:flex;align-items:center;gap:8px;border:1px solid #aabfc5;border-radius:4px;box-shadow:0 4px 0 #edf0ed,0 5px 0 #d8e1df,0 14px 26px #24465109;padding:10px 11px 10px 18px;transition:border-color .2s,box-shadow .2s}.query-form:focus-within{border-color:var(--blue);box-shadow:0 4px 0 #e8f0ef,0 5px 0 #b3cdd3,0 14px 32px #24465110}.search-mark{width:18px;color:var(--blue);align-self:center;margin-right:4px}.query-form textarea{display:block;resize:none;width:100%;height:40px;min-height:40px;max-height:132px;line-height:24px;padding:8px 0;border:0;background:transparent;color:var(--ink);font-size:15px;overflow-y:auto;appearance:none}.query-form textarea::placeholder{color:var(--muted);opacity:1}.query-submit{width:44px;height:44px;flex:0 0 44px;background:var(--blue);color:white;border-radius:50%;display:grid;place-items:center;transition:transform .2s,background .2s}.query-submit:hover{background:#114b60;transform:translateX(2px)}.query-submit svg{width:20px;height:20px}.query-clear{min-width:30px;height:44px;padding:7px;color:var(--muted)}.query-clear svg{width:14px;height:14px}.query-foot{font-size:11px;color:var(--muted);display:flex;justify-content:space-between;gap:10px;align-items:center;padding:13px 0 0}.query-foot kbd{font:10px var(--sans);border:1px solid var(--rule);padding:1px 4px;border-radius:3px}.query-foot .small-link{color:var(--blue);padding:0;min-height:24px;font-size:11px}.suggestions{position:absolute;left:0;right:0;top:calc(100% - 20px);z-index:40;box-shadow:0 12px 30px #1737451f;background:#fff;border:1px solid #aabfc5;border-top:2px solid var(--blue);border-radius:0 0 4px 4px;list-style:none;padding:8px;margin:0}.suggestions li{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 13px;min-height:48px;cursor:pointer;border-radius:2px;font-size:14px}.suggestions li[data-active=true],.suggestions li:hover{background:#edf4f4;color:var(--blue)}.suggestions small{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);white-space:nowrap}.prompt-label{font-size:10px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin:29px 0 8px}.example-questions{display:grid;gap:0;max-width:500px}.example-question{border-bottom:1px solid var(--rule);display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;text-align:left;min-height:44px;font-size:13px}.example-question:first-child{border-top:1px solid var(--rule)}.example-question svg{width:15px;height:15px;color:var(--blue);transition:transform .2s}.example-question:hover{color:var(--blue)}.example-question:hover svg{transform:translateX(4px)}.home-art{align-self:stretch;display:flex;align-items:center;position:relative;min-width:0}.home-art:before{content:'';position:absolute;inset:9% -6% 8% -5%;background:radial-gradient(ellipse,#e2ecec 0%,#f2f5f1 45%,transparent 70%);pointer-events:none}.hero-canvas{position:relative;z-index:1;width:100%;min-width:0}.learning-strip{display:grid;grid-template-columns:.65fr 1fr 1fr 1fr;gap:28px;align-items:center;padding:28px 0 32px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);margin-bottom:38px}.learning-strip>p{font:italic 23px/1.2 var(--serif);color:var(--blue);margin:0}.strip-item{display:flex;gap:12px;align-items:flex-start;min-height:54px}.strip-item svg{width:26px;height:26px;color:var(--blue);margin-top:1px}.strip-item strong{font-size:12px;font-weight:600;display:block;margin:0 0 4px}.strip-item span{font-size:11px;color:var(--muted);display:block;max-width:200px;line-height:1.6}.home-index{display:flex;justify-content:space-between;align-items:center;gap:30px;margin:0 0 55px}.home-index p{font-size:12px;color:var(--muted);margin:0}.text-button{color:var(--blue);display:inline-flex;align-items:center;gap:12px;min-height:44px;font-size:13px;padding:0}.text-button svg{width:17px;height:17px}.text-button:hover{text-decoration:underline;text-underline-offset:5px}.page-footer{border-top:1px solid var(--rule);padding:22px 0 30px;display:flex;justify-content:space-between;gap:24px;color:var(--muted);font-size:10px;line-height:1.7}.page-footer>div{max-width:660px}.page-footer button{font-size:11px;color:var(--blue);white-space:nowrap;padding:0;min-height:32px}.footer-links{display:flex;gap:25px;align-items:flex-start}
/* Answer workspace */
.answer-search-bar{padding:26px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:30px;border-bottom:1px solid var(--rule)}.answer-search-bar .query-box{width:100%;max-width:720px}.answer-search-bar .query-form{padding-block:6px;box-shadow:0 2px 0 #edf0ed,0 3px 0 #d8e1df}.answer-search-bar .query-foot{padding-top:7px}.back-home{color:var(--muted);display:flex;align-items:center;gap:10px;white-space:nowrap;font-size:12px;min-height:44px;padding:0}.back-home svg{width:16px;height:16px}.answer-layout{display:grid;grid-template-columns:minmax(0,1.03fr) minmax(0,1fr);gap:64px;padding:40px 0 46px;align-items:start}.answer-copy{min-width:0}.answer-meta{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:0 0 20px}.answer-meta .eyebrow{margin:0;font-size:9px}.evidence-tag{font-size:10px;color:var(--muted);padding:5px 8px;background:#eef2ee;border:1px solid #dde5e1;border-radius:2px;white-space:nowrap}.answer-title{font:400 clamp(35px,3.35vw,50px)/1.1 var(--serif);letter-spacing:-.045em;margin:0 0 24px}.answer-summary{font-size:17px;line-height:1.75;margin:0 0 25px;color:#243a43}.answer-summary p{margin:0 0 14px}.meaning-block{margin:25px 0 22px;border-top:1px solid var(--rule);padding-top:20px}.micro-heading{font-size:10px;font-weight:600;color:var(--blue);letter-spacing:.1em;text-transform:uppercase;margin:0 0 10px}.meaning-block p{font-size:14px;line-height:1.8;margin:0}.answer-limit{margin:22px 0;background:#eef3f1;border-left:2px solid var(--blue2);padding:13px 16px;font-size:12px;color:#36545e;line-height:1.7}.answer-limit strong{font-weight:600;display:block;margin-bottom:3px;font-size:10px;letter-spacing:.07em;text-transform:uppercase}.answer-visual-column{min-width:0;position:sticky;top:104px}.visual-frame{position:relative;padding:24px 20px 15px;background:linear-gradient(125deg,#f2f5f0,#eaf1ef);border:1px solid #ccd9d7;border-radius:3px;box-shadow:0 3px 0 #e3ebe6,0 4px 0 #ccd9d7,0 18px 38px #1b414909}.visual-frame:before{content:'';position:absolute;left:12px;top:12px;width:5px;height:5px;border:1px solid #93b2ba;border-radius:50%;box-shadow:calc(100% - 20px) 0 0 #93b2ba}.visual-caption{margin:17px 0 0;display:flex;justify-content:space-between;gap:12px;font-size:10px;color:var(--muted);line-height:1.5}.visual-caption span:first-child{text-transform:uppercase;letter-spacing:.1em;color:var(--blue)}.answer-secondary{padding:15px 0 3px;display:flex;gap:23px;align-items:center}.secondary-button{font-size:12px;color:var(--blue);min-height:44px;display:flex;align-items:center;gap:9px;padding:0}.secondary-button svg{width:16px;height:16px}.secondary-button:hover{text-decoration:underline;text-underline-offset:5px}.deep-toggle{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:17px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);width:100%;text-align:left;margin-top:18px;min-height:60px}.deep-toggle>span{font:21px var(--serif);letter-spacing:-.02em}.deep-toggle .circle-arrow{transition:transform .3s}.deep-toggle[aria-expanded=true] .circle-arrow{transform:rotate(45deg)}.technical-detail{padding:10px 0 22px}.technical-section{padding:17px 0;border-bottom:1px solid #e3e8e3}.technical-section h3{font:600 12px var(--sans);margin:0 0 9px;color:var(--blue)}.technical-section p{font-size:13px;line-height:1.8;margin:0}.fact-list{margin:15px 0 20px;border-top:1px solid var(--rule)}.fact-row{display:grid;grid-template-columns:1fr 1.15fr;gap:14px;padding:11px 0;border-bottom:1px solid var(--rule);font-size:12px}.fact-row dt{color:var(--muted)}.fact-row dd{margin:0;text-align:right}.fact-row dd strong{font-size:14px;font-weight:500}.fact-row dd small{display:block;font-size:10px;color:var(--muted);margin-top:3px}.followup-section{border-top:1px solid var(--rule);padding:25px 0 36px;display:grid;grid-template-columns:1fr 3fr;gap:30px}.followup-section h2{font:25px/1.2 var(--serif);margin:0;letter-spacing:-.03em}.followup-list{display:flex;flex-wrap:wrap;gap:4px 25px}.followup-button{display:flex;align-items:center;gap:14px;font-size:12px;min-height:44px;padding:0;color:var(--blue);text-align:left}.followup-button svg{width:14px;height:14px}.followup-button:hover{text-decoration:underline;text-underline-offset:5px}.options-list{display:grid;gap:10px;margin:25px 0}.option-button{display:flex;align-items:center;justify-content:space-between;gap:15px;min-height:66px;padding:16px 18px;border:1px solid #c5d6d9;background:#fff;text-align:left;font-size:14px;transition:background .2s,border-color .2s}.option-button:hover{border-color:var(--blue);background:#f1f6f5}.option-button svg{width:16px;height:16px;color:var(--blue)}.input-original{margin:20px 0;padding:16px;background:#f1f3ee;border:1px solid var(--rule)}.input-original p{font-size:12px;margin:8px 0 0;overflow-wrap:anywhere}.input-original .micro-heading{font-size:9px}.coverage-art{position:relative;padding:35px 20px;border:1px solid var(--rule);background:#f2f5f0;min-height:310px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.coverage-art>svg{width:145px;height:145px;color:var(--blue);margin-bottom:22px}.coverage-art p{max-width:280px;font-size:12px;color:var(--muted);margin:0}.comparison-panel{margin:24px 0;border:1px solid #cad9d9;border-radius:3px;overflow:hidden}.compare-head{display:grid;grid-template-columns:1fr 1fr 1fr;background:#eaf0ee;gap:12px;padding:14px 16px;font-size:11px;color:var(--blue);font-weight:600}.compare-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;padding:13px 16px;font-size:12px;border-top:1px solid #dce5e1;align-items:start}.compare-row>span:first-child{color:var(--muted);font-size:11px}.compare-row[data-state=different]{background:#f0f6f5}.compare-row[data-state=missing]{background:#f5f4ed}.compare-row em{display:block;font-size:9px;color:var(--muted);font-style:normal;margin-top:2px}.compare-note{font-size:10px;color:var(--muted);margin:0 0 10px}.compact-answer .answer-layout{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr)}
/* Browse index */
.topics-heading{display:grid;grid-template-columns:1.15fr 1fr;gap:40px;padding:47px 0 37px;align-items:end}.topics-heading h1{font:48px/1.13 var(--serif);letter-spacing:-.045em;max-width:600px;margin:0}.topics-heading p{font-size:14px;line-height:1.8;color:var(--muted);margin:0;max-width:350px}.topics-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 55px;padding-bottom:55px}.topic-item{border-top:1px solid var(--rule)}.topic-trigger{display:flex;align-items:center;text-align:left;gap:18px;min-height:105px;width:100%;padding:20px 0}.topic-number{font:italic 24px var(--serif);color:#72949f}.topic-title{font:25px/1.2 var(--serif);letter-spacing:-.025em;flex:1}.topic-trigger:hover .topic-title{color:var(--blue)}.topic-trigger .circle-arrow{transition:transform .2s}.topic-trigger[aria-expanded=true] .circle-arrow{transform:rotate(45deg);background:var(--blue);color:white;border-color:var(--blue)}.topic-questions{padding:0 0 23px 45px}.topic-questions>p{font-size:12px;color:var(--muted);margin:0 0 12px}.topic-questions button{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;padding:11px 0;text-align:left;color:var(--blue);font-size:12px;min-height:44px}.topic-questions svg{width:13px;height:13px;flex:none}
/* Evidence and review */
.ap-dialog{border:1px solid #bfced0;background:var(--paper);color:var(--ink);padding:0;max-width:calc(100vw - 32px);box-shadow:0 25px 90px #18394435;max-height:calc(100dvh - 56px);overflow:auto;border-radius:4px}.ap-dialog::backdrop{background:#17323c50;backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px)}.ap-dialog[open]{animation:dialog-in .24s var(--ease)}.dialog-head{padding:27px 30px 22px;border-bottom:1px solid var(--rule);display:flex;align-items:flex-start;gap:25px;justify-content:space-between;position:sticky;top:0;background:var(--paper);z-index:2}.dialog-head .eyebrow{font-size:9px;margin-bottom:10px}.dialog-head h2{font:34px/1.1 var(--serif);letter-spacing:-.04em;margin:0}.close-dialog{width:40px;height:40px;min-width:40px;border:1px solid #c5d3d5;border-radius:50%;display:grid;place-items:center;color:var(--blue);margin-top:4px}.close-dialog svg{width:17px;height:17px}.close-dialog:hover{background:#e8f0ee}.dialog-body{padding:25px 30px 32px}.dialog-body>p{font-size:13px;color:var(--muted);line-height:1.75;margin:0 0 23px}.sources-dialog{width:570px;margin:auto 24px auto auto}.source-item{padding:22px 0;border-top:1px solid var(--rule)}.source-item .source-type{font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:var(--blue);margin:0 0 9px}.source-item h3{font:23px/1.25 var(--serif);letter-spacing:-.03em;margin:0 0 12px}.source-item p{font-size:12px;line-height:1.75;margin:0 0 12px;color:var(--muted)}.source-item dl{margin:0 0 16px}.source-item dl div{display:flex;justify-content:space-between;gap:20px;margin:7px 0;font-size:10px}.source-item dt{color:var(--muted)}.source-item dd{margin:0;text-align:right}.source-item>a{font-size:12px;color:var(--blue)}.correction-toggle{width:100%;display:flex;justify-content:space-between;align-items:center;min-height:50px;border-top:1px solid var(--rule);padding:16px 0 8px;text-align:left;font-size:12px;color:var(--blue)}.correction-form label{font-size:12px;display:block;margin:14px 0 7px}.correction-form textarea{width:100%;min-height:90px;resize:vertical;border:1px solid #aebfc2;padding:12px;border-radius:3px;background:white;font-size:13px}.correction-form p{font-size:10px;color:var(--muted);line-height:1.6}.solid-button{background:var(--blue);color:white;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:44px;padding:10px 18px;font-size:12px;border-radius:3px}.solid-button:hover{background:#104b60}.guide-dialog{width:830px}.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}.guide-state{display:flex;align-items:center;gap:13px;min-height:61px;border-top:1px solid var(--rule);padding:12px 0;text-align:left;width:100%;font-size:12px}.guide-state .guide-number{font:italic 20px var(--serif);color:#72949f;min-width:25px}.guide-state strong{font-weight:500;flex:1}.guide-state:hover{color:var(--blue)}.guide-state svg{width:14px;height:14px;color:var(--blue)}.guide-boundary{padding:15px;background:#eef2ed;border-left:2px solid var(--blue);font-size:11px;color:var(--muted);line-height:1.7;margin:20px 0 0}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;border-radius:3px;padding:13px 19px;z-index:100;font-size:12px;max-width:calc(100vw - 40px);box-shadow:0 5px 20px #18232620}.result-enter{animation:result-in .35s var(--ease)}@keyframes dialog-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes result-in{from{opacity:.4;transform:translateY(9px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1650px){.home-grid{min-height:690px;gap:65px}.hero-title{font-size:76px}}
@media(max-width:1150px){.app-shell{padding-inline:35px}.home-grid{gap:14px}.hero-title{font-size:52px}.answer-layout{gap:32px}.learning-strip{gap:18px}.learning-strip>p{font-size:21px}.strip-item{gap:9px}.topics-grid{gap:0 30px}.topic-title{font-size:23px}.query-form{padding-left:13px}.query-form textarea{font-size:14px}}
@media(max-width:900px){.home-grid{grid-template-columns:1.15fr .85fr;gap:0;min-height:560px;padding-top:38px}.hero-title{font-size:44px}.hero-intro{font-size:13px}.home-art{margin-left:-35px;pointer-events:auto}.home-intro{z-index:3}.home-intro .query-box{max-width:unset;width:calc(100% + 25px)}.learning-strip{grid-template-columns:1fr 1fr 1fr}.learning-strip>p{grid-column:1/-1;font-size:21px}.answer-layout{grid-template-columns:1fr 1fr;gap:24px}.answer-title{font-size:37px}.answer-summary{font-size:15px}.answer-meta{align-items:flex-start;flex-direction:column;gap:10px}.visual-frame{padding:18px 12px 12px}.answer-search-bar{gap:20px}.back-home>span{display:none}.topics-heading h1{font-size:40px}}
@media(max-width:700px){html{scroll-padding-top:85px}.app-shell{padding-inline:22px}.app-bar{min-height:76px;gap:14px}.app-logo img{width:138px}.app-bar-right{gap:15px}.app-nav-button{font-size:11px}.app-nav-button .circle-arrow{display:none}.preview-label{font-size:8px;letter-spacing:.05em}.preview-label .preview-word{display:none}.home-grid{display:flex;flex-direction:column;align-items:stretch;gap:0;padding:35px 0 24px;min-height:0}.home-intro{z-index:4}.eyebrow{font-size:9px;margin-bottom:17px}.hero-title{font-size:clamp(39px,7.5vw,55px);max-width:540px;margin-bottom:18px}.hero-intro{font-size:14px;max-width:430px;margin-bottom:24px}.home-intro .query-box{width:100%;max-width:100%}.query-form{padding:8px 9px 8px 12px;gap:5px}.search-mark{width:16px;margin-right:0}.query-form textarea{font-size:14px}.query-submit{width:42px;height:42px;flex-basis:42px}.query-clear{min-width:26px;width:26px;padding:5px}.query-foot{font-size:10px}.query-foot .keyboard-hint{display:none}.prompt-label{margin-top:25px;font-size:9px}.example-questions{max-width:none}.example-question{font-size:12px;padding-block:11px}.home-art{margin:18px 0 -6px;min-height:250px;max-width:540px;align-self:center;width:100%}.home-art:before{inset:0}.learning-strip{padding:24px 0;gap:20px 12px;margin-bottom:20px}.learning-strip>p{font-size:22px}.strip-item{flex-direction:column;gap:9px}.strip-item strong{font-size:11px}.strip-item span{font-size:10px}.strip-item svg{width:24px;height:24px}.home-index{margin-bottom:32px;gap:20px;align-items:flex-start}.home-index p{font-size:11px;max-width:160px}.home-index .text-button{font-size:11px;line-height:1.6;min-width:150px;justify-content:flex-end}.page-footer{font-size:9px;flex-direction:column;gap:12px;padding-top:18px}.footer-links{gap:25px}.answer-search-bar{padding:20px 0;gap:12px;align-items:flex-start}.answer-search-bar .back-home{margin-top:5px}.answer-search-bar .query-box{max-width:unset}.answer-search-bar .query-form{padding:6px 8px 6px 10px}.answer-search-bar .search-mark{display:none}.answer-search-bar .query-foot{font-size:9px}.answer-layout,.compact-answer .answer-layout{display:flex;flex-direction:column;gap:27px;padding:30px 0}.answer-copy{width:100%}.answer-title{font-size:40px;margin-bottom:19px}.answer-meta{flex-direction:row;align-items:center;gap:10px;margin-bottom:19px}.answer-meta .eyebrow{font-size:8px}.evidence-tag{font-size:8px;padding:4px 6px;white-space:normal;text-align:right}.answer-summary{font-size:16px;line-height:1.7}.meaning-block{margin:20px 0}.meaning-block p{font-size:13px}.answer-limit{font-size:12px}.answer-visual-column{position:static;width:100%}.visual-frame{padding:22px 14px 16px}.answer-secondary{gap:25px}.followup-section{display:block;padding:24px 0 28px}.followup-section h2{font-size:23px;margin-bottom:14px}.followup-list{display:block}.followup-button{width:100%;justify-content:space-between;border-top:1px solid var(--rule);font-size:12px}.topics-heading{display:block;padding:32px 0 26px}.topics-heading h1{font-size:39px;margin-bottom:18px}.topics-heading p{font-size:13px}.topics-grid{grid-template-columns:1fr;gap:0;padding-bottom:25px}.topic-trigger{min-height:90px;gap:15px}.topic-title{font-size:25px}.topic-questions{padding-left:40px}.ap-dialog{max-width:calc(100vw - 20px);max-height:calc(100dvh - 28px);border-radius:4px;margin:auto}.sources-dialog{width:calc(100vw - 20px)}.dialog-head{padding:22px 22px 18px;gap:15px}.dialog-head h2{font-size:30px}.dialog-body{padding:20px 22px 26px}.guide-grid{grid-template-columns:1fr}.guide-state{min-height:57px}.dialog-body>p{font-size:12px}.source-item h3{font-size:23px}.compare-head,.compare-row{padding:12px 10px;gap:10px;grid-template-columns:.82fr 1fr 1fr;font-size:11px}.compare-row>span:first-child{font-size:10px}.compare-head{font-size:10px}.fact-row{font-size:11px}.answer-search-bar .query-form textarea{font-size:13px}}
@media(max-width:360px){.app-shell{padding-inline:17px}.app-logo img{width:120px}.app-bar-right{gap:10px}.app-nav-button{font-size:10px}.hero-title{font-size:36px}.preview-label{font-size:7px}.preview-label .status-dot{display:none}.query-foot{font-size:9px}.query-submit{width:38px;height:38px;flex-basis:38px}.query-form textarea{font-size:13px}.search-mark{display:none}.example-question{font-size:11px}.answer-title{font-size:35px}.answer-meta .eyebrow:before{width:13px}.answer-meta{gap:7px}.secondary-button{font-size:11px}.guide-state{font-size:11px}.home-index{flex-direction:column;gap:7px}.home-index p{max-width:none}.topics-heading h1{font-size:35px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}.query-submit:hover,.example-question:hover svg{transform:none}}

.query-label{display:block;font-size:10px;color:var(--blue);letter-spacing:.045em;margin-bottom:9px}.correction-form textarea:focus{outline:2px solid var(--blue);outline-offset:3px}.answer-search-bar #answer-query-slot{width:100%;max-width:720px}.compare-row,.compare-head,.fact-row{overflow-wrap:anywhere}

/* R2: a phone workspace, with the shared desktop composition retained. */
.mobile-site-menu,.mobile-dock,.mobile-query-edit,.mobile-answer-nav{display:none}
.recent-dialog,.composer-dialog{width:570px}.recent-question{display:grid;grid-template-columns:1fr 22px;gap:6px 14px;width:100%;padding:18px 0;border-top:1px solid var(--rule);text-align:left}.recent-question strong{font:23px/1.2 var(--serif);letter-spacing:-.025em}.recent-question>span{font-size:13px;color:var(--muted);grid-column:1;overflow-wrap:anywhere}.recent-question>svg{grid-row:1/3;grid-column:2;align-self:center;width:20px;color:var(--blue)}.recent-empty{padding:22px 0 28px}.recent-empty>p:not(.micro-heading){font:29px/1.25 var(--serif);margin:10px 0 24px}.composer-example{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:54px;border-top:1px solid var(--rule);width:100%;text-align:left;font-size:15px;color:var(--blue)}
@media(max-width:700px){
 html{scroll-padding-top:calc(76px + env(safe-area-inset-top))}
 body{padding-bottom:calc(88px + env(safe-area-inset-bottom));font-size:16px}
 .hs-header{display:none!important}
 .app-shell{padding-inline:max(18px,env(safe-area-inset-left));max-width:100%}
 .app-bar{position:sticky;top:0;z-index:60;min-height:calc(64px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 18px 0;margin-inline:-18px;background:#fafaf7f5;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);gap:12px}
 .app-logo img{width:144px}.app-logo{min-height:48px}.app-bar-right{display:none}
 .mobile-site-menu{display:grid;place-items:center;width:44px;height:44px;flex:0 0 44px;border:1px solid var(--rule);border-radius:50%;margin-left:auto;color:var(--blue)}.mobile-site-menu svg{width:20px;height:20px}
 .home-grid{padding:25px 0 20px}.home-intro>.eyebrow{font-size:10px;letter-spacing:.08em;margin-bottom:16px}.hero-title{font-size:clamp(35px,9vw,49px);line-height:1.08;margin-bottom:16px;letter-spacing:-.045em}.hero-title br{display:none}.hero-intro{font-size:14px;line-height:1.55;margin:0 0 22px;max-width:39ch}
 .query-label{font-size:12px;letter-spacing:0;margin-bottom:8px}.query-form{padding:7px 8px 7px 12px;gap:6px;border-radius:8px}.query-form textarea,.answer-search-bar .query-form textarea{font-size:16px;line-height:24px}.query-submit{height:48px;width:48px;flex:0 0 48px}.query-clear{height:44px;width:44px;min-width:44px;padding:12px}.search-mark{display:none}.query-foot{font-size:11px;line-height:1.5;padding-top:13px;max-width:36ch}.prompt-label{font-size:11px;letter-spacing:.08em;margin:27px 0 9px}.example-question{font-size:15px;line-height:1.45;min-height:56px;padding-block:13px;gap:20px}.example-question svg{width:18px;height:18px;flex-shrink:0}.home-art{margin:16px 0 4px;max-width:420px}.learning-strip{display:none}.home-index{padding-top:20px;border-top:1px solid var(--rule);display:block}.home-index p{font-size:14px;max-width:none}.home-index p br{display:none}.home-index .text-button{font-size:14px;justify-content:flex-start;margin-top:10px}.page-footer{font-size:11px;line-height:1.6;padding-bottom:22px}.page-footer button{font-size:12px;min-height:44px}.footer-links{gap:18px;flex-wrap:wrap}
 .mobile-dock{position:fixed;left:0;right:0;bottom:0;z-index:70;display:grid;grid-template-columns:1fr 2.2fr 1fr;gap:9px;align-items:center;background:#fafaf7f5;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-top:1px solid #ccd9d7;box-shadow:0 -5px 22px #24465108;padding:8px max(14px,env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(14px,env(safe-area-inset-left))}
 .mobile-dock>button{min-height:54px;min-width:44px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;line-height:1.25;color:var(--muted);border-radius:6px}.mobile-dock>button svg{width:21px;height:21px}.mobile-dock>.dock-ask{background:var(--blue);color:white;flex-direction:row;gap:9px;font-size:13px;font-weight:500;border:1px solid #0f536b;box-shadow:inset 0 1px 0 #ffffff30}.mobile-dock>button[aria-current=page]{color:var(--blue);background:#e9f0ed}
 .answer-search-bar{display:none}.mobile-query-edit:not([hidden]){display:flex;width:100%;align-items:center;gap:16px;text-align:left;border-bottom:1px solid var(--rule);padding:17px 0;min-height:76px;color:var(--blue)}.mobile-query-edit>span:first-child{flex:1;min-width:0}.mobile-query-edit small{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:5px}.mobile-query-edit #mobile-current-query{font-size:14px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.mobile-query-edit>svg{width:21px;height:21px;flex:0 0 21px;margin-right:9px}
 .answer-layout,.compact-answer .answer-layout{display:block;padding:23px 0 28px}.answer-copy{display:contents}.answer-overview{margin-bottom:19px}.answer-meta{margin-bottom:13px;flex-wrap:wrap;align-items:flex-start;justify-content:flex-start}.answer-meta .eyebrow{font-size:10px;line-height:1.4}.answer-meta .eyebrow:before{display:none}.evidence-tag{font-size:10px;line-height:1.5;text-align:left;padding:3px 7px}.answer-title{font-size:clamp(32px,8.7vw,41px);line-height:1.12;margin:0;letter-spacing:-.04em}
 .mobile-answer-nav{display:flex;align-items:center;gap:7px;position:sticky;top:calc(64px + env(safe-area-inset-top));z-index:45;padding:8px 0 12px;background:var(--paper);margin:0 0 19px;border-bottom:1px solid var(--rule)}.mobile-answer-nav>[role=tablist]{display:flex;gap:3px;flex:1;padding:3px;background:#eaf0ec;border-radius:7px}.mobile-answer-nav button{min-height:44px;padding:10px 11px;font-size:13px;line-height:1.2;white-space:nowrap;border-radius:5px}.mobile-answer-nav [role=tab]{flex:1;color:var(--muted)}.mobile-answer-nav [aria-selected=true]{background:white;color:var(--blue);box-shadow:0 1px 3px #19363d15}.mobile-answer-nav>[data-sources]{display:flex;align-items:center;gap:6px;color:var(--blue);padding-inline:9px}.mobile-answer-nav>[data-sources] svg{width:17px;height:17px}.mobile-answer-nav>[data-sources]>span{font-size:10px;border-radius:50%;background:#e9efec;min-width:17px;padding:3px}
 #answer-reading:focus:not(:focus-visible),#answer-diagram:focus:not(:focus-visible){outline:none}.answer-summary{font-size:17px;line-height:1.7;margin-bottom:22px}.meaning-block p{font-size:15px;line-height:1.7}.micro-heading{font-size:11px;letter-spacing:.08em}.answer-limit{font-size:13px;line-height:1.65;padding:14px}.answer-limit strong{font-size:11px;margin-bottom:6px}.technical-section h3{font-size:14px}.technical-section p{font-size:15px;line-height:1.75}.deep-toggle{min-height:60px}.deep-toggle>span{font-size:22px}.answer-secondary{gap:20px;flex-wrap:wrap}.secondary-button{font-size:13px;min-height:48px}.visual-frame{padding:0;background:transparent;border:0;box-shadow:none}.visual-frame:before{display:none}.visual-caption{font-size:11px;margin-top:15px;line-height:1.5}.visual-caption span:first-child{letter-spacing:.06em}.followup-section{padding:22px 0 15px}.followup-section h2{font-size:25px}.followup-section h2 br{display:none}.followup-button{font-size:15px;min-height:56px;line-height:1.5;padding-block:13px}.option-button{font-size:16px;line-height:1.45;min-height:65px;padding:16px}.solid-button{font-size:14px;min-height:48px}.input-original p{font-size:14px;line-height:1.6}.coverage-art{display:none}
 .comparison-panel{border-radius:7px;margin-top:20px}.compare-head{display:none}.compare-row{display:grid;grid-template-columns:1fr 1fr;gap:10px 18px;padding:15px;font-size:15px}.compare-row:first-of-type{border-top:0}.compare-row>span:first-child{grid-column:1/-1;font-size:12px;font-weight:600;color:var(--blue);display:flex;justify-content:space-between;gap:12px}.compare-row em{font-size:11px;font-weight:400}.compare-value:before{content:attr(data-column);display:block;font-size:11px;color:var(--muted);line-height:1.4;margin-bottom:5px}.compare-note{font-size:12px;line-height:1.5}.fact-row{font-size:14px;line-height:1.5;padding-block:14px}.fact-row dd strong{font-size:16px}.fact-row dd small{font-size:12px;line-height:1.45}
 .topics-heading{padding:30px 0 27px}.topics-heading h1{font-size:37px;line-height:1.12}.topics-heading p{font-size:15px;line-height:1.65}.topic-trigger{min-height:88px}.topic-title{font-size:27px}.topic-questions{padding-left:0}.topic-questions>p{font-size:14px}.topic-questions button{font-size:15px;line-height:1.45;min-height:54px;padding:14px 0}.topic-number{font-size:22px}.text-button{font-size:14px}
 .ap-dialog{position:fixed;inset:auto 0 0;margin:0;width:100%;max-width:100%;max-height:calc(var(--visible-height,100dvh) - 12px);border:1px solid #c2d2d4;border-bottom:0;border-radius:18px 18px 0 0;overscroll-behavior:contain;scroll-padding-top:100px}.ap-dialog[open]{animation:phone-sheet-in .2s var(--ease)}.dialog-head{padding:22px 20px 18px;align-items:center}.dialog-head .eyebrow{font-size:10px;letter-spacing:.08em;margin-bottom:9px}.dialog-head h2{font-size:31px}.close-dialog{width:44px;height:44px;min-width:44px;margin:0}.dialog-body{padding:22px 20px calc(25px + env(safe-area-inset-bottom))}.dialog-body>p{font-size:14px;line-height:1.65}.source-item h3{font-size:26px}.source-item p{font-size:14px;line-height:1.65}.source-item .source-type{font-size:11px;line-height:1.5}.source-item dl div{font-size:12px;gap:15px;margin:12px 0}.source-item dd{max-width:64%;overflow-wrap:anywhere}.source-item>a{font-size:14px;display:inline-flex;min-height:44px;align-items:center}.correction-toggle{font-size:14px;min-height:54px;gap:20px}.correction-form label{font-size:14px}.correction-form textarea{font-size:16px;line-height:1.5;min-height:110px}.correction-form p{font-size:12px}.guide-state{font-size:14px;min-height:62px}.guide-boundary{font-size:12px;line-height:1.6}
 .composer-dialog{inset:var(--visible-top,0px) 0 auto;height:var(--visible-height,100dvh);max-height:var(--visible-height,100dvh);border:0;border-radius:0;overflow:auto;display:none}.composer-dialog[open]{display:flex;flex-direction:column}.composer-dialog .dialog-head{padding-top:calc(18px + env(safe-area-inset-top));flex:none}.composer-dialog .dialog-body{padding-top:18px;overflow:auto;min-height:0;flex:1}.composer-dialog .query-box{width:100%;max-width:100%}.composer-dialog .query-form{align-items:flex-end;padding:10px 8px 10px 12px}.composer-dialog .query-form textarea{min-height:80px;max-height:144px}.composer-dialog .query-clear{align-self:flex-start}.composer-dialog .query-submit{align-self:flex-end}.composer-dialog .query-foot{font-size:12px;max-width:none}.composer-dialog .suggestions{position:static;box-shadow:none;border:0;border-top:1px solid var(--rule);padding:6px 0;margin-top:18px;background:transparent}.composer-dialog .suggestions li{padding:14px 2px;font-size:15px;line-height:1.45;gap:12px;border-bottom:1px solid var(--rule);min-height:60px;flex-wrap:wrap}.composer-dialog .suggestions small{font-size:10px}.composer-dialog .query-label{font-size:13px}.composer-dialog .prompt-label{margin-top:26px}.composer-dialog .composer-example{font-size:15px;line-height:1.45;padding:12px 0}.recent-question strong{font-size:25px}.recent-question>span{font-size:14px}.toast{bottom:calc(88px + env(safe-area-inset-bottom));font-size:13px;width:max-content;line-height:1.5}
 .hs-dialog{inset:auto 0 0;margin:0;width:100%;max-height:calc(100dvh - 12px);border-radius:18px 18px 0 0;padding-bottom:env(safe-area-inset-bottom)}.hs-dialog .hs-dialog-top{position:sticky;top:0;background:var(--paper);z-index:2}.hs-dialog .hs-menu-link small{font-size:13px}.hs-dialog .hs-menu-footer{font-size:13px}.hs-dialog .hs-menu-footer>a{min-height:44px;display:flex;align-items:center}
}
@media(max-width:360px){.mobile-dock{gap:6px;padding-inline:10px}.mobile-dock>.dock-ask{font-size:12px;gap:7px}.app-logo img{width:134px}.hero-title{font-size:35px}.mobile-answer-nav{gap:3px}.mobile-answer-nav button{font-size:12px;padding-inline:9px}.mobile-answer-nav>[data-sources]{padding-inline:5px;gap:4px}.mobile-answer-nav>[data-sources]>span{display:none}.dialog-head{padding-inline:17px}.dialog-head h2{font-size:28px}.dialog-body{padding-inline:17px}.answer-title{font-size:32px}}
@media(max-width:700px) and (max-height:500px){.composer-dialog .dialog-head{padding-block:10px}.composer-dialog .dialog-head .eyebrow{display:none}.composer-dialog .dialog-head h2{font-size:25px}.composer-dialog .dialog-body{padding-top:12px}.composer-dialog .query-label{margin-bottom:6px}.composer-dialog .query-foot{padding-top:8px}.composer-dialog .query-form textarea{min-height:64px}.composer-dialog .suggestions{margin-top:12px}}
@keyframes phone-sheet-in{from{opacity:.5;transform:translateY(25px)}to{opacity:1;transform:translateY(0)}}

.phone-title,.phone-intro,.mobile-edit{display:none}
@media(max-width:700px){.desktop-title,.desktop-intro{display:none}.phone-title,.phone-intro{display:inline}.hero-title .phone-title br{display:block}.mobile-edit:not([hidden]){display:grid;place-items:center;width:44px;height:44px;flex:0 0 44px;margin-left:auto;color:var(--blue);border:1px solid var(--rule);border-radius:50%}.mobile-edit svg{width:19px;height:19px}.mobile-edit:not([hidden])+.mobile-site-menu{margin-left:0}.app-bar{gap:8px}.hero-intro{margin-bottom:19px}.query-foot{max-width:none}}

@media(max-width:700px){.ap-dialog:not(.composer-dialog){bottom:var(--visible-bottom,0px)}}