:root{--red:#ff2b20;--paper:#f5f5f7;--ink:#1d1d1f;--muted:#86868b;--border:#dedee1;--max:1180px;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",Arial,sans-serif;color:var(--paper);background:#050506}*{box-sizing:border-box}body{margin:0;-webkit-font-smoothing:antialiased}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{text-decoration:none;color:inherit}button{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--red);outline-offset:5px}button:active{scale:.97}button{transition:background .2s,color .2s}img{max-width:100%;display:block}[hidden]{display:none!important}.shell{width:min(var(--max),calc(100% - 80px));margin-inline:auto}.nav{height:64px;position:sticky;top:0;z-index:20;background:#080809f0;backdrop-filter:blur(20px);border-bottom:1px solid #ffffff19}.nav-in{max-width:var(--max);width:calc(100% - 80px);height:100%;display:flex;align-items:center;margin:auto}.brand{width:116px;margin-right:auto}.nav-links{display:flex;align-items:center;gap:30px;color:#b0b0b6;font-size:12px}.nav-links a:hover,.nav-links .current{color:#fff}.nav-links .current{position:relative}.nav-links .current:after{content:"";position:absolute;bottom:-13px;left:calc(50% - 2px);width:4px;height:4px;background:var(--red)}.pill{padding:10px 16px;border-radius:24px;background:var(--red);color:white}.eyebrow{font-size:12px;color:var(--red);letter-spacing:.06em;margin:0 0 22px;font-weight:600}.qa-hero{overflow:hidden;background:#080809;padding-bottom:40px}.hero-heading{padding-top:57px}.title-row{display:flex;align-items:flex-end;justify-content:space-between;gap:36px}.title-row h1{font-size:clamp(34px,3.55vw,49px);line-height:1.22;font-weight:600;letter-spacing:-.035em;margin:0}.red-square{display:inline-block;width:.3em;height:.3em;background:var(--red);margin-left:.22em;vertical-align:.12em}.hero-aside{min-width:220px;padding-bottom:4px}.hero-aside p{color:#98989e;font-size:14px;line-height:1.8;margin:0 0 18px}.text-link{font-size:14px;display:inline-flex;align-items:center;gap:30px}.text-link:hover{color:var(--red)}.text-link span{font-size:19px}.deck{margin:18px auto 0;position:relative;touch-action:pan-y;outline-offset:-6px!important}.deck-stage{height:415px;position:relative;max-width:1440px;margin:auto;perspective:1300px}.qcard{--x:0px;--y:0px;--rotate:0deg;--scale:1;position:absolute;left:50%;top:42px;width:338px;height:344px;margin-left:-169px;border:1px solid #dedee3;border-radius:16px;background:#e9e9ec;color:var(--ink);padding:29px 30px;display:flex;flex-direction:column;transform:translate3d(var(--x),var(--y),0) rotate(var(--rotate)) scale(var(--scale));transition:transform .65s cubic-bezier(.22,.8,.22,1),opacity .45s;box-shadow:0 18px 38px #0003;text-align:left;isolation:isolate;cursor:pointer;overflow:hidden}.qcard.is-active{background:#fff;box-shadow:0 24px 60px #0005;cursor:default}.qcard.is-active:before{content:"";position:absolute;top:0;left:30px;right:30px;height:3px;background:var(--red)}.card-top{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:10px;color:#6e6e73;letter-spacing:.04em}.card-top .qnum{font-family:ui-monospace,Menlo,monospace;color:#99999f}.qcard h2{font-size:24px;font-weight:600;line-height:1.5;letter-spacing:-.03em;margin:26px 0 17px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.qcard p{font-size:13px;line-height:1.85;color:#77777e;margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.card-foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:18px;border-top:1px solid #00000015}.card-link{font-size:12px;color:#d72019;display:flex;justify-content:space-between;width:100%}.card-link span{font-size:18px}.qcard:not(.is-active) .card-foot{visibility:hidden;pointer-events:none}.deck-controls{display:flex;align-items:center;justify-content:space-between;max-width:1050px;margin-top:10px}.controls{display:flex;align-items:center;gap:18px}.circle{width:40px;height:40px;border-radius:50%;border:1px solid #ffffff30;background:transparent;font-size:18px}.circle:hover{background:#fff;color:#111}.controls>span{font-family:ui-monospace,Menlo,monospace;color:#99999f;font-size:11px;min-width:48px;text-align:center}.articles{background:var(--paper);color:var(--ink);padding:66px 0 76px}.article-heading{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:34px;gap:24px}.article-heading .eyebrow{margin-bottom:14px;color:#d72019}.article-heading h2{font-size:30px;font-weight:600;letter-spacing:-.03em;margin:0}.article-heading>p{font-size:12px;color:var(--muted);margin-bottom:4px}.article-row{display:grid;grid-template-columns:140px minmax(0,1fr) 40px;align-items:center;gap:34px;padding:29px 0;border-top:1px solid #00000020}.article-row:last-child{border-bottom:1px solid #00000020}.article-meta{display:grid;gap:10px;font-size:11px;color:#86868b;letter-spacing:.03em}.article-meta span{color:#b21f1a}.article-row h3{font-size:22px;font-weight:600;margin:0 0 10px;line-height:1.4;transition:color .2s}.article-row p{font-size:13px;line-height:1.7;color:#86868b;margin:0;max-width:770px}.article-row:hover h3{color:#c5221b}.row-arrow{text-align:right;font-size:24px;font-weight:300}footer.shell{padding:38px 0;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:#999}footer img{width:105px}
/* Three-column reading room */
body[data-view=reader]{background:#f1f1f3;color:var(--ink)}.reader-heading{height:86px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 34px;background:#fff;border-bottom:1px solid var(--border)}.reader-heading p{font-size:18px;font-weight:600;margin:0}.back-link,.copy-link{font-size:12px;color:#797980}.copy-link{border:0;background:transparent;padding:10px 0}.copy-link:hover,.back-link:hover{color:#d72019}.reader-grid{display:grid;grid-template-columns:210px 310px minmax(0,1fr);height:calc(100dvh - 64px);max-width:1680px;margin:auto}.chapters{padding:32px 20px 24px 28px;border-right:1px solid var(--border);background:#ededf0;display:flex;flex-direction:column;overflow-y:auto}.column-label{font-size:11px;color:#919197;letter-spacing:.09em;margin:0 0 24px 10px}.chapter-list{display:grid;gap:9px}.chapter-button{width:100%;display:flex;align-items:baseline;gap:12px;text-align:left;border:0;background:transparent;color:#717178;padding:13px 10px;line-height:1.6;font-size:13px;border-radius:7px}.chapter-button>span{font-size:10px;font-family:ui-monospace,Menlo,monospace;color:#9d9da3;flex-shrink:0}.chapter-button:hover{background:#e3e3e7}.chapter-button.selected{background:#fff;color:#1d1d1f;font-weight:600;box-shadow:0 2px 8px #00000004}.chapter-button.selected>span{color:#e02a21}.side-home{font-size:11px;color:#88888f;margin:40px 10px 0;padding-top:25px;border-top:1px solid #d9d9de}.question-panel{padding:30px 22px;background:#f8f8fa;border-right:1px solid var(--border);overflow:auto}.question-panel>label{display:block;font-size:11px;color:#88888f;margin-bottom:12px}.search-box{position:relative}.search-box input{display:block;width:100%;min-width:0;border:1px solid #dddde2;background:#fff;border-radius:7px;padding:12px 30px 12px 12px;font-size:12px;color:#222}.search-box>span{position:absolute;right:11px;top:9px;font-size:20px;color:#999;pointer-events:none}.list-caption{font-size:11px;line-height:1.6;color:#88888e;margin:25px 0 14px}.question-link{display:grid;grid-template-columns:24px 1fr;gap:10px;padding:16px 11px;border-radius:8px;font-size:13px;line-height:1.75;color:#77777e;border:1px solid transparent}.question-link>span:first-child{font-family:ui-monospace,Menlo,monospace;font-size:10px;color:#a3a3a8;padding-top:2px}.question-link:hover{background:#eeeeF1;color:#222}.question-link.selected{background:#fff;color:#1d1d1f;border-color:#dfdfe3;box-shadow:0 3px 10px #00000003}.question-link.selected>span:first-child{color:#d72019}.reading-panel{min-width:0;padding:34px;overflow:auto;scroll-behavior:auto}.answer-card{max-width:820px;margin:0 auto;background:#fff;border:1px solid #e3e3e7;border-radius:12px;padding:38px 44px 28px;box-shadow:0 8px 32px #000000025}.answer-meta{display:flex;justify-content:space-between;gap:20px;color:#93939a;font-size:11px}.answer-meta span:first-child{color:#c12a23}.answer-meta span:last-child{font-family:ui-monospace,Menlo,monospace}.answer-card h1{font-size:29px;font-weight:600;line-height:1.55;letter-spacing:-.025em;margin:23px 0 28px;padding-bottom:28px;border-bottom:1px solid #ededf0;overflow-wrap:anywhere}.answer-body{font-size:15px;line-height:1.95;color:#515158;overflow-wrap:anywhere}.answer-body p{margin:0 0 22px}.answer-body strong{font-weight:600;color:#252529}.answer-body mark{background:transparent;color:#1d1d1f;font-weight:600}.answer-body img{width:100%;height:auto;border-radius:8px;margin:28px 0}.answer-body pre{white-space:pre-wrap;overflow-wrap:anywhere;padding:22px;background:#f5f5f7;border-left:2px solid #d72019;border-radius:0 7px 7px 0;font:13px/1.9 inherit;color:#616168}.answer-body ul,.answer-body ol{padding-left:24px}.answer-body a{color:#c12a23;text-decoration:underline}.service-link{margin-top:36px;padding-top:24px;border-top:1px solid #ededf0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;font-size:12px;color:#98989e}.service-link a{color:#c12a23}.answer-pagination{border-top:1px solid #ededf0;margin-top:26px;padding-top:20px;display:flex;justify-content:space-between;font-size:12px;color:#7a7a82;gap:20px}.answer-pagination a:hover{color:#d72019}.mobile-back{display:none}.empty{font-size:13px;color:#888;line-height:1.8;padding:15px 0}#notice{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:12px 20px;border-radius:30px;background:#222;color:#fff;font-size:12px;z-index:40;pointer-events:none;opacity:0;transition:opacity .2s}#notice.show{opacity:1}#load-error{padding:20px;text-align:center;color:#d72019;font-size:14px}
@media(min-width:1500px){.reader-grid{grid-template-columns:230px 350px minmax(0,1fr)}.answer-card{padding:44px 55px}}
@media(max-width:1100px){.reader-grid{grid-template-columns:170px 250px minmax(0,1fr)}.chapters{padding-left:14px;padding-right:12px}.chapter-button{font-size:12px;gap:8px}.question-panel{padding:27px 15px}.reading-panel{padding:24px 20px}.answer-card{padding:28px}.answer-card h1{font-size:25px}.answer-body{font-size:14px}.hero-heading{padding-top:46px}}
@media(max-width:800px){.shell,.nav-in{width:calc(100% - 40px)}.nav{height:58px}.brand{width:96px}.nav-links{gap:18px}.nav-links .pill{display:none}.title-row h1{font-size:36px}.hero-aside{min-width:180px}.deck-stage{height:410px}.qcard{width:308px;margin-left:-154px;height:336px;padding:26px}.qcard h2{font-size:23px}.hero-aside p{font-size:12px}.article-heading{display:block}.article-heading>p{margin-top:17px}.article-row{grid-template-columns:95px 1fr 24px;gap:18px}.article-row h3{font-size:18px}.article-row p{font-size:12px}.reader-heading{height:75px;padding:0 20px}.reader-heading p{font-size:14px}.copy-link{font-size:11px}.reader-grid{grid-template-columns:1fr;height:auto;display:block}.chapters{padding:18px 20px;border-right:0;border-bottom:1px solid var(--border);overflow:hidden}.column-label,.side-home{display:none}.chapter-list{display:flex;overflow-x:auto;gap:8px;padding-bottom:4px}.chapter-button{white-space:nowrap;width:auto;flex-shrink:0;padding:8px 12px}.question-panel{padding:24px 20px;min-height:calc(100dvh - 143px);border-right:0}.question-link{padding:16px;font-size:14px}.reading-panel{display:none;padding:18px 16px 36px}.reader.reading .question-panel,.reader.reading .chapters{display:none}.reader.reading .reading-panel{display:block}.mobile-back{display:inline-block;border:0;background:transparent;color:#888;font-size:12px;padding:0 0 19px}.answer-card{padding:26px 24px}.answer-card h1{font-size:25px}.answer-body{font-size:15px}.reader-heading .copy-link{max-width:70px;line-height:1.6}.reader-heading .back-link{font-size:11px;white-space:nowrap}}
@media(max-width:540px){.nav-links{gap:16px;font-size:11px}.title-row{display:block}.hero-heading{padding-top:35px}.hero-heading .eyebrow{margin-bottom:18px}.title-row h1{font-size:34px}.hero-aside{display:flex;justify-content:space-between;align-items:center;margin-top:22px;gap:16px}.hero-aside p{margin:0;font-size:11px}.hero-aside .text-link{font-size:12px;gap:8px}.deck{margin-top:8px}.deck-stage{height:374px}.qcard{top:28px;width:278px;margin-left:-139px;height:316px;padding:25px 24px;border-radius:13px}.qcard h2{font-size:22px;margin-top:22px;margin-bottom:14px}.qcard p{font-size:12px}.card-top{font-size:9px}.deck-controls{margin-top:6px}.circle{width:36px;height:36px}.controls{gap:12px}.qa-hero{padding-bottom:28px}.articles{padding-top:42px;padding-bottom:45px}.article-heading h2{font-size:25px}.article-row{grid-template-columns:1fr 24px;gap:12px;padding:23px 0}.article-meta{grid-column:1/-1;display:flex;gap:15px;font-size:10px}.article-row h3{font-size:18px;margin-bottom:9px}.article-row p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.reader-heading{padding:0 16px;gap:12px}.reader-heading p{font-size:12px}.reader-heading p .red-square{display:none}.answer-card h1{font-size:23px}.answer-card{padding:24px 21px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}

@media(min-width:801px){.question-panel{display:flex;flex-direction:column;overflow:hidden}.question-panel>label,.search-box,.list-caption{flex-shrink:0}#question-list{overflow:auto;min-height:0;padding-right:3px;scrollbar-width:thin}.chapters,.reading-panel{scrollbar-width:thin}}

/* Primary entry to the complete question collection. */
.deck-controls{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;margin-top:28px}.deck-controls .controls{justify-self:end}.browse-button{display:inline-flex;align-items:center;justify-content:center;gap:25px;min-width:232px;min-height:58px;padding:17px 30px;border-radius:999px;background:var(--red);color:#fff;font-size:16px;font-weight:600;line-height:1.5;transition:background .2s,transform .2s}.browse-button:hover{background:#e7261d}.browse-button:active{transform:scale(.97)}.hero-aside p{margin-bottom:0}
@media(max-width:800px){.deck-controls{grid-template-columns:1fr 1fr;gap:20px;margin-top:22px}.browse-button{grid-column:1/-1;grid-row:1;justify-self:center;min-width:224px;min-height:56px}.deck-controls .controls{grid-column:2;grid-row:2}}
@media(prefers-reduced-motion:reduce){.browse-button{transition:none}}

/* Clear primary and secondary actions on the gallery page. */
body[data-view] .nav-links .pill{background:transparent;border:1px solid #ffffff45;color:#d2d2d7;padding:9px 15px}
body[data-view] .nav-links .pill:hover{background:#ffffff10;border-color:#ffffff80;color:#fff}
@media(min-width:801px){.browse-button{grid-column:2;grid-row:1}.deck-controls .controls{grid-column:3;grid-row:1}}
@media(max-width:800px){.deck-controls .controls{grid-column:1/-1;justify-self:center}}

/* Read one answer without leaving the card gallery. */
.card-link{border:0;background:transparent;padding:0;text-align:left;font-family:inherit;cursor:pointer}
html:has(.question-dialog[open]){scrollbar-gutter:stable}
.question-dialog{width:min(720px,calc(100% - 48px));max-width:none;max-height:84dvh;margin:auto;padding:0;border:1px solid #e3e3e7;border-radius:18px;background:#fff;color:var(--ink);box-shadow:0 30px 100px #0005;overflow:hidden}
.question-dialog[open]{display:flex;flex-direction:column;animation:dialog-enter .22s cubic-bezier(.22,.8,.22,1)}
.question-dialog::backdrop{background:rgba(0,0,0,.65);backdrop-filter:blur(5px)}
.dialog-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 28px 16px 36px;border-bottom:1px solid #ededf0;flex-shrink:0}
#dialog-category{color:#c12a23;font-size:12px}.dialog-tools{display:flex;align-items:center;gap:20px}#dialog-number{font:11px ui-monospace,Menlo,monospace;color:#93939a}
.dialog-close{display:grid;place-items:center;width:36px;height:36px;flex-shrink:0;padding:0;border:0;border-radius:50%;background:#f2f2f4;color:#77777e}.dialog-close:hover{background:#e6e6e9;color:#1d1d1f}
.dialog-scroll{overflow-y:auto;overscroll-behavior:contain;min-height:0;padding:28px 40px 34px;scrollbar-width:thin}
#dialog-title{margin:0 0 27px;font-size:27px;font-weight:600;line-height:1.5;letter-spacing:-.025em;overflow-wrap:anywhere}
.dialog-scroll .answer-body>p:last-child{margin-bottom:0}
@keyframes dialog-enter{from{opacity:0;transform:translateY(10px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}
@media(max-width:540px){.question-dialog{width:calc(100% - 28px);max-height:86dvh;border-radius:14px}.dialog-toolbar{padding:14px 16px 12px 22px;gap:10px}.dialog-tools{gap:12px}#dialog-category{font-size:10px}.dialog-scroll{padding:23px 23px 28px}#dialog-title{font-size:23px;margin-bottom:23px}.dialog-scroll .answer-body{font-size:14px;line-height:1.95}}

.nav-brand{width:116px;margin-right:auto}.nav-links a[aria-current="page"]{color:#fff}.qa-articles-title{font-size:30px;font-weight:600;margin:16px 0 0;letter-spacing:-.03em}.qa-articles-lead{color:#86868b;font-size:13px;margin:16px 0 0}.question-directory{max-width:960px;margin:auto;padding:48px 24px 80px;color:#1d1d1f}.question-directory h1{font-size:32px}.question-directory section{padding:24px 0;border-bottom:1px solid #ddd}.question-directory li{margin:16px 0;line-height:1.7}.question-directory a:hover{color:#c12a23}body[data-view="collection"]{background:#f5f5f7}.chapter-button{text-decoration:none}.nav-links .pill{font-family:inherit}@media(max-width:800px){.nav-brand{width:96px}}