/* Atlas checkout: the same paper, ink and lettering as the course map. */
@font-face{font-family:"Atlas Serif";src:url(/atlas-landing/assets/optimized/serif.1c7136dcfe2b.woff2) format("woff2");font-weight:300 700;font-display:swap}
@font-face{font-family:"Atlas Sans";src:url(/atlas-landing/assets/optimized/sans.177af0794fb0.woff2) format("woff2");font-weight:100 900;font-display:swap}
.atlas-checkout{--paper:#f7f5ef;--ink:#26251f;--muted:#716e64;--line:#d5d0c3;--action:#a65b3d;--sans:"Atlas Sans",Arial,sans-serif;--serif:"Atlas Serif",Georgia,serif;background:var(--paper);color:var(--ink);font-family:var(--sans);min-height:100dvh}
.anthropic-page.atlas-checkout{padding-top:0}
.atlas-checkout *{box-sizing:border-box}
.atlas-checkout ::selection{background:#e5c8b8;color:var(--ink)}
.atlas-checkout :is(a,button,input,summary):focus-visible{outline:2px solid var(--action);outline-offset:4px}
.atlas-checkout a{color:var(--action);text-underline-offset:4px}
.atlas-checkout-header{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:98px;padding:20px max(40px,calc((100% - 1280px)/2));border-bottom:1px solid var(--line)}
.atlas-checkout .atlas-checkout-brand{font:600 49px/1 var(--serif);letter-spacing:-.035em;color:var(--ink);text-decoration:none}
.atlas-checkout-brand span{color:var(--action)}
.atlas-checkout-header nav{display:flex;align-items:center;gap:32px;font:400 14px/1.4 var(--sans)}
.atlas-checkout-header nav>a{color:var(--ink);text-decoration:none}
.atlas-checkout-header nav>a:hover{color:var(--action)}
.atlas-checkout .checkout-page{min-height:0;background:transparent;padding:32px 40px 48px}
.atlas-checkout .checkout-panel{max-width:1160px;margin:auto;padding:0;border:0;border-radius:0;background:transparent;color:var(--ink)}
.atlas-checkout .checkout-panel__header{max-width:none;margin-bottom:32px;display:flex;align-items:flex-end;justify-content:space-between;gap:40px}
.atlas-checkout .checkout-panel h1{font:600 56px/1.05 var(--serif);letter-spacing:-.03em;color:var(--ink);text-wrap:balance}
.atlas-checkout .checkout-panel__intro{max-width:34ch;margin:0 0 4px;font:400 17px/1.6 var(--sans);color:var(--muted)}
.atlas-checkout .checkout-options{grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch;gap:24px;margin-top:0}
.atlas-checkout .checkout-option{overflow:visible;border:1px solid var(--line);border-radius:6px;background:#fcfaf5;scroll-margin-top:24px}
.atlas-checkout .checkout-option__summary{align-items:flex-start;justify-content:flex-start;min-height:238px;padding:32px 28px 24px;background:transparent;text-align:left;border-bottom:1px solid var(--line)}
.atlas-checkout .checkout-option--featured .checkout-option__summary{background:transparent}
.atlas-checkout .checkout-option__label{color:var(--muted);font:500 14px/1.4 var(--sans);letter-spacing:0;text-transform:none}
.atlas-checkout .checkout-option__badge{top:16px;right:24px;padding:5px 9px;border:0;border-radius:3px;background:#eae2d5;color:#874b34;font:500 12px/1.4 var(--sans)}
.atlas-checkout .checkout-option h2{max-width:65%;min-height:64px;margin:0;color:var(--ink);font:600 36px/1.12 var(--serif);letter-spacing:-.02em;text-wrap:balance}
.atlas-checkout .checkout-option__price{justify-content:flex-start;flex-wrap:wrap;gap:10px;margin-top:24px}
.atlas-checkout .checkout-option__price strong{font:500 36px/1.15 var(--sans);font-variant-numeric:lining-nums tabular-nums;letter-spacing:-.025em;white-space:normal;color:var(--ink)}
.atlas-checkout .checkout-option__price del{font:400 17px/1.4 var(--sans);font-variant-numeric:lining-nums tabular-nums;color:var(--muted)}
.atlas-checkout .checkout-option__payment{margin-top:7px;font:400 13px/1.5 var(--sans);color:var(--muted)}
.atlas-checkout .checkout-option__body{padding:24px 28px 28px;gap:0}
.atlas-checkout .checkout-option__benefits-title{font:600 14px/1.5 var(--sans);color:var(--ink);letter-spacing:0;text-transform:none}
.atlas-checkout .checkout-panel__list{margin:12px 0 20px;padding:0 0 0 20px;color:var(--ink);font:400 14px/1.65 var(--sans)}
.atlas-checkout .checkout-panel__list{list-style:disc;gap:8px}
.atlas-checkout .checkout-panel__list li::before{display:none}
.atlas-checkout .checkout-panel__list li{margin:0;padding-left:3px}
.atlas-checkout .checkout-panel__list li::marker{color:var(--action)}
.atlas-checkout .checkout-option__benefit{margin:12px 0 0;padding:0;border-radius:0;background:transparent;color:var(--muted);font:400 14px/1.65 var(--sans)}
.atlas-checkout .checkout-option__bundle-composition{gap:0;margin-top:12px}
.atlas-checkout .checkout-option__course-group,.atlas-checkout .checkout-option__future{padding:12px 0;border-radius:0;background:transparent;border-bottom:1px solid var(--line);color:var(--ink);font:400 14px/1.6 var(--sans)}
.atlas-checkout .checkout-option__course-group summary,.atlas-checkout .checkout-option__future summary{cursor:pointer;font-weight:500;min-height:24px}
.atlas-checkout .checkout-option__course-group summary::marker,.atlas-checkout .checkout-option__future summary::marker{color:var(--action)}
.atlas-checkout .checkout-option__course-group ul{gap:6px;margin-top:14px;padding-left:20px;color:var(--muted)}
.atlas-checkout .checkout-option__bundle-price-note{margin-top:16px;color:var(--muted);font:400 14px/1.65 var(--sans)}
.atlas-checkout .checkout-option__future{margin-top:6px}
.atlas-checkout .checkout-option__promotion-form{margin-top:12px;padding-top:0;border-top:0}
.atlas-checkout .checkout-option__promotion{gap:8px;color:var(--ink);font:500 14px/1.5 var(--sans)}
.atlas-checkout .checkout-option__promotion-control{gap:8px}
.atlas-checkout .checkout-option__promotion input{min-height:46px;border:1px solid #bdb5a7;border-radius:4px;background:#fffcf7;padding:11px 12px;color:var(--ink);font:400 16px/1.4 var(--sans);box-shadow:none;caret-color:var(--action)}
.atlas-checkout .checkout-option__promotion input::placeholder{color:var(--muted)}
.atlas-checkout .checkout-option__promotion-apply{min-height:46px;border:1px solid #bdb5a7;border-radius:4px;background:transparent;padding:10px 15px;color:var(--ink);font:500 14px/1.4 var(--sans)}
.atlas-checkout .checkout-option__promotion-apply:hover{background:#eee8dc}
.atlas-checkout .checkout-option__promotion input:focus-visible{border-color:var(--action);outline-color:var(--action)}
.atlas-checkout .checkout-option__promotion-hint,.atlas-checkout .checkout-option__promotion-feedback{margin-top:8px;color:var(--muted);font:400 12px/1.5 var(--sans)}
.atlas-checkout .checkout-option__promotion-feedback--applied{color:#386141}
.atlas-checkout .checkout-option__promotion-feedback--unavailable,.atlas-checkout .checkout-option__promotion-feedback--rate-limited{color:#8b3026}
.atlas-checkout .checkout-option__form{margin-top:0;padding-top:16px}
.atlas-checkout .checkout-option__form::before{display:none}
.atlas-checkout .checkout-option__consent{align-items:flex-start;gap:10px;color:var(--ink);font:400 14px/1.6 var(--sans)}
.atlas-checkout .checkout-option__consent input{width:18px;height:18px;min-width:18px;margin-top:3px;accent-color:var(--action)}
.atlas-checkout .checkout-option__consent :is(label,a){font:inherit;color:inherit}
.atlas-checkout .checkout-option__consent a{color:var(--action)}
.atlas-checkout .checkout-panel__pay{width:100%;min-height:50px;margin-top:18px;border:1px solid var(--ink);border-radius:4px;background:var(--ink);color:var(--paper);font:500 15px/1.4 var(--sans);box-shadow:none;transition:background .18s,transform .22s cubic-bezier(.22,1,.36,1)}
.atlas-checkout .checkout-panel__pay:hover{background:#414034;border-color:#414034}
.atlas-checkout .checkout-panel__pay:disabled{opacity:.6;cursor:wait}
.atlas-checkout .checkout-option__consent-error,.atlas-checkout .checkout-panel__error{font:400 14px/1.5 var(--sans);color:#8b3026}
.atlas-checkout .checkout-panel__error{margin-bottom:24px;border-color:#c98376;background:#f5e8e1}
.atlas-checkout .checkout-panel__legal{max-width:82ch;margin:28px auto 0;padding:0;border:0;border-radius:0;background:transparent;color:var(--muted);font:400 13px/1.6 var(--sans)}
.atlas-checkout .checkout-panel__legal p{margin:0;font:inherit;color:inherit}
.atlas-checkout .checkout-panel__legal-marker{background:transparent;color:var(--muted);padding:0}
.atlas-checkout .checkout-panel__legal-marker svg{width:20px;height:20px}
.atlas-checkout .checkout-panel__actions{display:none}
.atlas-checkout .checkout-panel__back{font:400 14px/1.5 var(--sans);color:var(--action)}
.atlas-checkout .atlas-auth-footer{border-top:1px solid var(--line);padding:28px 40px;background:var(--paper)}
.atlas-checkout .atlas-auth-footer-inner{max-width:1280px;margin:auto;display:flex;gap:32px;align-items:flex-start;font:400 12px/1.6 var(--sans);color:var(--muted)}
.atlas-checkout .atlas-auth-copyright{margin:0;white-space:nowrap}
.atlas-checkout .atlas-auth-legal{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:12px 20px;margin-left:auto}
.atlas-checkout .atlas-auth-legal a{color:var(--muted);text-decoration:none}
.atlas-checkout .atlas-auth-legal a:hover{text-decoration:underline;color:var(--action)}

/* Pricing-card hierarchy informed by 21st.dev / Flexnative Card09 (MIT).
   Existing Atlas illustrations and tokens remain the visual authority. */
.atlas-checkout .checkout-return{display:inline-flex;align-items:center;gap:8px;margin-bottom:24px;color:var(--muted);font:400 14px/1.5 var(--sans);text-decoration:none}
.atlas-checkout .checkout-return:hover{color:var(--action)}
.atlas-checkout .checkout-panel h1 span{display:block;color:var(--action);font-style:italic}
.atlas-checkout .checkout-option--featured{border-color:#c2a58b;background:#f2ecdf}
.atlas-checkout .checkout-option__art{position:absolute;right:16px;top:46px;width:180px;height:184px;background:center/contain no-repeat;pointer-events:none}
.atlas-checkout .checkout-option__art--single{background-image:url(/atlas-landing/assets/optimized/pricing-single-book-atlas-mobile.eb43b2635b86.webp)}
.atlas-checkout .checkout-option__art--library{width:200px;background-image:url(/atlas-landing/assets/optimized/pricing-library-distinct-mobile.583d4c9efe44.webp)}
.atlas-checkout .checkout-option__summary h2,.atlas-checkout .checkout-option__price,.atlas-checkout .checkout-option__payment{position:relative}
.atlas-checkout .checkout-option__badge{background:#e7dbc8}
.atlas-checkout .checkout-option__purchase{margin-top:auto;padding-top:16px}
.atlas-checkout .checkout-promotion{border-top:1px solid var(--line);padding-top:4px}
.atlas-checkout .checkout-promotion>summary{display:flex;align-items:center;justify-content:space-between;min-height:44px;cursor:pointer;color:var(--muted);font:400 14px/1.5 var(--sans);list-style:none}
.atlas-checkout .checkout-promotion>summary::-webkit-details-marker{display:none}
.atlas-checkout .checkout-promotion>summary::after{content:"";width:8px;height:8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);margin-right:4px;transition:transform .22s cubic-bezier(.22,1,.36,1)}
.atlas-checkout .checkout-promotion[open]>summary::after{transform:rotate(225deg)}
.atlas-checkout .checkout-promotion>summary:hover{color:var(--action)}
.atlas-checkout .checkout-panel__pay:active{transform:scale(.985)}
.atlas-checkout .checkout-option--featured .checkout-panel__pay{background:var(--action);border-color:var(--action)}
.atlas-checkout .checkout-option--featured .checkout-panel__pay:hover{background:#88462e;border-color:#88462e}
.atlas-checkout .checkout-option__course-group summary,.atlas-checkout .checkout-option__future summary{min-height:32px;align-content:center}
@media(min-width:761px){.atlas-checkout .checkout-option:only-child{max-width:760px;margin-inline:auto;width:100%}.atlas-checkout .checkout-options:has(>.checkout-option:only-child){grid-template-columns:1fr}}
@media(max-width:1100px){
 .atlas-checkout-header{padding-inline:32px}
 .atlas-checkout .checkout-page{padding:32px}
 .atlas-checkout .checkout-panel h1{font-size:48px}
 .atlas-checkout .checkout-option__summary{padding-inline:24px}
 .atlas-checkout .checkout-option__body{padding-inline:24px}
 .atlas-checkout .checkout-option h2{font-size:32px;max-width:65%}
 .atlas-checkout .checkout-option__art{width:140px;right:8px}
 .atlas-checkout .checkout-option__art--library{width:160px}
}
@media(max-width:980px){
 .atlas-checkout .checkout-panel__header{display:block}
 .atlas-checkout .checkout-panel__intro{margin-top:16px;max-width:48ch}
 .atlas-checkout .checkout-options{grid-template-columns:1fr}
 .atlas-checkout .checkout-option{width:100%;max-width:640px;margin-inline:auto}
 .atlas-checkout .checkout-option__art{width:180px}
 .atlas-checkout .checkout-option__art--library{width:200px}
}
@media(max-width:760px){
 .atlas-checkout-header{min-height:78px;padding:16px 22px;gap:16px}
 .atlas-checkout .atlas-checkout-brand{font-size:39px}
 .atlas-checkout-header nav{gap:18px}
 .atlas-checkout .checkout-page{padding:24px 22px 32px}
 .atlas-checkout .checkout-return{margin-bottom:22px}
 .atlas-checkout .checkout-panel__header{display:block;margin-bottom:28px}
 .atlas-checkout .checkout-panel h1{font-size:40px;line-height:1.08}
 .atlas-checkout .checkout-panel__intro{font-size:15px;margin-top:16px;max-width:40ch}
 .atlas-checkout .checkout-options{grid-template-columns:1fr;gap:24px}
 .atlas-checkout .checkout-option__summary{min-height:246px;padding:28px 22px 22px}
 .atlas-checkout .checkout-option__body{padding:20px 22px 24px}
 .atlas-checkout .checkout-option h2{font-size:30px;min-height:72px;max-width:66%}
 .atlas-checkout .checkout-option__price strong{font-size:32px}
 .atlas-checkout .checkout-option__badge{top:12px;right:16px;font-size:11px}
 .atlas-checkout .checkout-option__art{top:48px;width:120px;height:152px;right:6px}
 .atlas-checkout .checkout-option__art--library{width:140px;height:120px}
 .atlas-checkout .checkout-option__price{gap:8px}
 .atlas-checkout .checkout-option__price del{font-size:15px}
 .atlas-checkout .checkout-panel__legal{margin-top:28px}
 .atlas-checkout .atlas-auth-footer{padding:24px 22px}
 .atlas-checkout .atlas-auth-footer-inner{display:block}
 .atlas-checkout .atlas-auth-legal{justify-content:flex-start;margin-top:16px;gap:10px 16px}
 .atlas-checkout-header .atlas-account-panel{right:0}
}
@media(max-width:360px){
 .atlas-checkout-header{padding-inline:16px}
 .atlas-checkout-header nav{gap:12px}
 .atlas-checkout .checkout-page{padding-inline:16px}
 .atlas-checkout .checkout-panel h1{font-size:36px}
 .atlas-checkout .checkout-option__summary,.atlas-checkout .checkout-option__body{padding-inline:18px}
 .atlas-checkout .checkout-option__art{width:100px;right:2px}
 .atlas-checkout .checkout-option__art--library{width:115px}
 .atlas-checkout .checkout-option__promotion-control{grid-template-columns:minmax(0,1fr) auto}
 .atlas-checkout .checkout-option__promotion-apply{padding-inline:10px}
}
@media(prefers-reduced-motion:reduce){.atlas-checkout .checkout-panel__pay,.atlas-checkout .checkout-promotion>summary::after{transition:none}.atlas-checkout .checkout-panel__pay:active{transform:none}}

/* Working document/contact links use the shared footer's typography. */
.atlas-checkout .atlas-home-tail :is(.footer-documents,.footer-contacts)>a{display:block;padding:3px 0;font:400 15px/1.5 var(--sans);color:var(--ink);text-decoration:none}
.atlas-checkout .atlas-home-tail .footer-documents .footer-section-content>a{color:var(--ink);text-decoration:none}
.atlas-checkout .atlas-home-tail :is(.footer-documents,.footer-contacts) a:hover{text-decoration:underline;text-underline-offset:5px}