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dialog{width:min(560px,calc(100% - 32px));max-height:calc(100dvh - 40px);padding:40px;border:1px solid #afc8d5;background:var(--paper);color:var(--ink);box-shadow:0 40px 100px #102e4340}dialog::backdrop{background:#102e437a;backdrop-filter:blur(6px)}body.dialog-open{overflow:hidden}.dialog-close{position:absolute;top:14px;right:16px;font-size:26px;font-weight:300;width:40px;height:40px}.dialog-close:hover{background:#edf5fa}dialog>.eyebrow{color:var(--gold);font-size:9px;padding-right:25px}dialog h2{font-size:33px;margin-top:18px}fieldset{padding:0;border:0;margin:24px 0}legend{font-size:12px;margin-bottom:12px}fieldset label{display:flex;align-items:center;gap:14px;padding:12px 14px;margin-bottom:8px;border:1px solid var(--line);cursor:pointer;font-size:13px}fieldset label:has(input:checked){background:#edf5fa;border-color:#8ab1c8}fieldset label input{accent-color:var(--ink);width:16px;height:16px;flex-shrink:0}fieldset small{display:block;color:var(--muted);font-size:10px;margin-top:2px}dialog .button{width:100%}dialog .subtle-note{margin-top:12px;font-size:9px}#assessment-result{margin-top:30px}#assessment-result>.eyebrow{color:var(--gold)}#assessment-result h3{font-size:25px;font-weight:400;line-height:1.5;margin:15px 0}#recommend-description{font-size:13px;color:var(--muted);line-height:2}.recommend-note{font-size:10px;color:var(--muted);border-top:1px solid var(--line);padding-top:18px;margin:22px 0}#assessment-restart{display:flex;margin:12px auto 0}.fade-in{animation:fade-in .45s ease}@keyframes fade-in{from{opacity:.4;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1650px){:root{--gutter:max(5vw,calc((100vw - 1520px)/2))}.hero-art{left:43%;width:57%}.hero-copy{width:57%}}
@media(max-width:1150px){.brand{gap:13px}.brand img{width:122px}.brand-project{font-size:12px}.brand-project>span{font-size:7px}.site-header nav{gap:21px;font-size:12px}.site-header nav>.nav-cta{padding:8px 12px;gap:12px}.hero-copy{width:60%}.hero-art{left:42%;width:64%}.program-facts>div{gap:15px;padding-inline:20px}.program-facts strong{font-size:45px}.program-facts p{font-size:12px}.program-facts p>span{font-size:10px}.program-facts .fact-text strong{font-size:28px}.project{grid-template-columns:20px 128px 1fr 82px 40px;gap:20px}.project-copy h3{font-size:21px}.project-tags>span{font-size:9px}.stage-panel{gap:5vw}.tab-arrow{right:12px}.curriculum-tabs strong{font-size:16px}.tab-en{font-size:8px}.orbit-grid{transform:scale(.93)}.evidence-layout{gap:6vw}.hero-actions{gap:20px}}
@media(max-width:850px){:root{--gutter:6vw}.site-header{padding-block:16px}.site-header nav{gap:17px}.brand-project,.brand-divider{display:none}.hero{min-height:760px}.hero-art{left:44%;width:65%;top:18%;height:67%}.hero-copy{width:65%}h1{font-size:65px}.hero-statement{font-size:18px}.hero-description{font-size:12px}.hero-actions{gap:18px}.button{padding:13px 18px;gap:18px}.text-button{font-size:12px}.art-coordinate{font-size:7px}.about-top{gap:6vw}.section{padding-top:65px;padding-bottom:70px}.section-meta{margin-bottom:40px}.program-facts>div{align-items:flex-start;flex-direction:column}.program-facts .fact-text strong{line-height:54px}.section-heading{gap:30px}.section-heading>p{font-size:12px;max-width:280px}.stage-copy h3{font-size:25px}.stage-copy>p:not(.eyebrow,.stage-outcome){font-size:12px}.stage-outcome{flex-direction:column;gap:6px}.notebook-bar{padding:14px}.notebook-bar>span:last-child{display:none}.notebook-content{padding:20px}.notebook-content pre{font-size:10px}.notebook-output{font-size:10px}.project{grid-template-columns:18px 100px 1fr 35px;gap:18px}.project-art{height:95px}.project-tags{display:none}.project-copy h3{font-size:20px}.project-copy p{font-size:11px}.project-copy .eyebrow{font-size:8px}.digits>span{left:35px;top:17px;font-size:60px}.circle-arrow{width:35px;height:35px}.evidence-layout{gap:5vw;grid-template-columns:1fr 1fr}.orbit-grid{transform:scale(.8);margin-inline:-30px}.experiment-caption{gap:12px}.experiment-caption>.mono{font-size:8px}.experiment-caption>p{font-size:13px}.faq-layout{gap:5vw}.faq h2{font-size:32px}summary{font-size:12px}.join-circle{width:148px;height:148px;padding-left:28px}.join-bottom{font-size:9px}footer{gap:20px}footer>p{font-size:10px}}
@media(max-width:640px){:root{--gutter:22px}html{scroll-padding-top:82px}.site-header{padding:15px 22px;background:#f5fafdde;backdrop-filter:blur(10px)}.site-header .brand img{width:117px}.brand-project,.brand-divider{display:block}.brand-project{font-size:11px}.brand-project>span{font-size:6px}.brand-divider{height:22px}.brand{gap:12px}.menu-toggle{display:flex;align-items:center;gap:9px;min-height:40px;font-size:12px;padding:7px 9px;border:1px solid #99794350}.menu-toggle i{position:relative;display:block;width:15px;height:10px}.menu-toggle i:before,.menu-toggle i:after{content:'';position:absolute;left:0;width:15px;height:1px;background:var(--ink);transition:transform .2s,top .2s}.menu-toggle i:before{top:1px}.menu-toggle i:after{top:8px}.site-header nav{display:none;position:absolute;top:100%;left:0;right:0;background:#f8fcfe;min-height:calc(100dvh - 75px);padding:30px 26px;flex-direction:column;gap:0;align-items:stretch}.site-header.menu-open nav{display:flex}.site-header.menu-open .menu-toggle i:before{top:5px;transform:rotate(45deg)}.site-header.menu-open .menu-toggle i:after{top:5px;transform:rotate(-45deg)}.site-header nav>a{padding:19px 0;font-size:22px;border-bottom:1px solid var(--line)}.site-header nav>a:after{display:none}.site-header nav>.nav-cta{margin-top:25px;padding:16px 18px;border:1px solid #99794370;justify-content:space-between;font-size:17px}body.menu-open{overflow:hidden}.hero{height:100svh;min-height:850px;max-height:none;display:block;background:linear-gradient(160deg,#fcfdfd 4%,#edf5fa 43%,#d4e7f3 100%)}.hero-copy{padding:128px var(--gutter) 0;width:100%}.hero-copy>.eyebrow{font-size:9px;letter-spacing:.075em;gap:9px}.hero-copy>.eyebrow>span{width:16px}h1{font-size:clamp(53px,14.1vw,75px);margin:25px 0 20px;line-height:1.12;letter-spacing:-.05em}h1 br{display:none}h1 em{display:block}.hero-statement{font-size:15px;margin-bottom:12px}.hero-description{font-size:11px;line-height:1.85}.hero-actions{margin-top:23px;gap:22px;flex-wrap:wrap}.hero-actions .button{font-size:11px;min-height:46px;padding:10px 17px}.hero-actions .text-button{font-size:11px;gap:9px}.hero-art{left:-7%;top:440px;width:114%;height:350px}.art-coordinate.top{top:5%;right:12%;font-size:6px;opacity:.8}.art-coordinate.bottom{display:none}.art-label{font-size:8px;gap:5px}.label-data{left:14%;bottom:16%}.label-model{top:23%;left:49%}.label-insight{right:13%;bottom:26%}.hero-bottom{bottom:21px;padding-top:15px}.scroll-hint{font-size:10px;gap:8px}.scroll-line{height:22px}.scroll-hint .mono{display:none}.hero-caption{font-size:9px;gap:7px}.hero-caption button{margin-left:2px;width:30px;height:30px;min-width:30px;min-height:30px}.chapter-number{display:none}.section{padding-top:44px;padding-bottom:48px;scroll-margin-top:70px}.section-meta{margin-bottom:30px}.section-meta .eyebrow{font-size:8px;letter-spacing:.1em}.section-meta .eyebrow:before{width:13px;margin-right:9px}.section-meta>.mono{display:none}h2{font-size:clamp(28px,7.6vw,41px);line-height:1.45;letter-spacing:-.04em}.about-top{grid-template-columns:1fr;gap:24px}.about-prose p{font-size:12px;line-height:2;margin-bottom:14px}.line-link{font-size:11px;gap:20px}.program-facts{margin-top:35px;padding-top:27px;gap:10px}.program-facts>div{padding:0 8px;gap:13px}.program-facts>div:first-child{padding-left:0}.program-facts strong{font-size:35px;gap:5px}.program-facts strong>span{font-size:9px}.program-facts p{font-size:10px}.program-facts p>span{font-size:9px;line-height:1.7;max-width:9em;margin-top:7px}.program-facts .fact-text strong{font-size:23px;line-height:42px;gap:3px}.section-heading{display:block;margin-bottom:28px}.section-heading>p{font-size:11px;line-height:1.9;margin-top:21px;max-width:none;padding:0}.curriculum-tabs{grid-template-columns:repeat(2,1fr);border:0;row-gap:0}.curriculum-tabs button{padding:19px 12px 19px 0;border-bottom:1px solid #adc7d5}.curriculum-tabs button:not(:first-child){padding-left:16px}.curriculum-tabs button:nth-child(3){padding-left:0;border-top:0}.curriculum-tabs button:nth-child(4){border-top:0}.curriculum-tabs strong{font-size:14px}.curriculum-tabs button .mono{font-size:10px}.curriculum-tabs button[aria-selected=true]{padding-left:12px}.tab-en{font-size:7px}.tab-arrow{right:13px;top:17px;font-size:13px}.stage-panel{display:block;padding-top:29px}.stage-copy>.eyebrow{font-size:9px}.stage-copy h3{font-size:27px;margin:15px 0}.stage-copy>p:not(.eyebrow,.stage-outcome){font-size:12px;max-width:none}.stage-copy ul{font-size:12px;gap:9px;margin-block:19px}.stage-outcome{flex-direction:row;font-size:10px;gap:16px;padding-top:17px}.notebook{margin-top:29px}.notebook-content{padding:21px}.notebook-content pre{font-size:11px;min-height:174px}.notebook-bar{font-size:9px}.notebook-footer{padding:12px 15px;font-size:9px}.filter-bar{gap:5px;padding-bottom:14px}.filters{gap:3px}.filters button{font-size:10px;padding:7px 10px}.filters button span{font-size:8px;margin-left:4px}.filter-bar>.mono{font-size:8px;letter-spacing:0}.project{position:relative;grid-template-columns:70px 1fr;gap:16px;padding:24px 0;align-items:start}.project-index{display:none}.project-art{height:77px;margin-top:1px}.project-copy .eyebrow{font-size:7px;line-height:1.6;letter-spacing:.025em;padding-right:0}.project-copy h3{font-size:18px;margin:8px 0}.project-copy h3>span{font-size:11px;line-height:1.7;margin-top:6px}.project-copy p{font-size:10px;line-height:1.8;padding-right:15px}.project .circle-arrow{position:absolute;right:0;bottom:20px;border:0;font-size:18px;width:22px;height:22px}.digits>span{font-size:44px;left:23px;top:13px}.subtle-note{font-size:9px;margin-top:15px}.evidence-layout{display:block}.evidence-copy>p{font-size:11px;margin:20px 0 25px;line-height:2}.evidence-list li{gap:18px;padding:18px 0}.evidence-list h3{font-size:13px}.evidence-list p{font-size:10px}.experiment-art{margin-top:27px}.experiment-heading{font-size:8px}.experiment-heading>.mono{font-size:8px}.orbit-grid{height:335px;transform:scale(.89);margin-inline:-18px}.p2{right:0}.experiment-caption>p{font-size:13px}.experiment-caption{padding-top:20px}.faq-layout{display:block}.faq h2{font-size:31px}.faq-intro{font-size:11px;margin:18px 0 9px}.faq-list{margin-top:29px}summary{font-size:12px;padding:20px 0}details>p{font-size:11px;line-height:2;padding-bottom:21px}.join-main{display:block;padding-top:0;padding-bottom:30px}.join-main h2{font-size:33px}.join-main p{font-size:12px;margin-top:18px}.join-circle{width:125px;height:125px;margin:32px 0 0 auto;padding-left:24px}.join-circle>span:first-child{font-size:14px}.join-circle>.join-arrow{font-size:30px;line-height:1.4}.join-circle>small{font-size:7px}.join-bottom{display:block;font-size:8px;padding-top:16px;line-height:1.8}.join-bottom a{display:block;font-size:10px;margin-top:8px}.join.section{padding-bottom:25px}footer{padding:27px var(--gutter);gap:16px;display:grid;grid-template-columns:1fr auto}footer .brand img{width:116px}footer>p{font-size:9px;grid-column:1;grid-row:2}footer>div{grid-column:1;grid-row:3;margin:0;font-size:8px;flex-direction:row;gap:15px}.back-top{grid-column:2;grid-row:1/4;margin:0}dialog{padding:30px 24px}dialog h2{font-size:29px}dialog .eyebrow{font-size:8px}fieldset{margin-top:20px}fieldset label{font-size:12px;padding:10px}fieldset small{font-size:9px}#assessment-result h3{font-size:22px}}
@media(max-width:360px){:root{--gutter:18px}.brand-project{font-size:9px}.brand-project>span{font-size:5px}.brand{gap:8px}.site-header{padding-inline:18px}.site-header .brand img{width:105px}.hero{min-height:850px}h1{font-size:51px}.hero-copy{padding-top:118px}.hero-actions{gap:16px}.hero-art{top:428px;height:350px}.hero-statement{font-size:14px}.hero-caption{font-size:8px}.program-facts strong{font-size:31px}.program-facts .fact-text strong{font-size:20px}.program-facts strong>span{font-size:8px}.orbit-grid{transform:scale(.79);margin-inline:-28px}.filters button{padding-inline:8px}.join-main h2{font-size:29px}footer>div{flex-direction:column;gap:4px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}
/* Columbia blue is the field color; white supports the reading surfaces. */
:root{--gold:#71572e;--muted:#365b72}
body{background:#b9d9eb}
.hero{background:#b9d9eb}
.hero-grid{background-image:linear-gradient(#5286a210 1px,transparent 1px),linear-gradient(90deg,#5286a210 1px,transparent 1px)}
.site-header{background:linear-gradient(180deg,#b9d9ebf5,#b9d9ebba,transparent)}
.site-header.scrolled{background:#b9d9ebee;border-bottom-color:#698da136}
h1 em{color:#315f7a}
.hero-description,.hero-bottom{color:#365b72}
.hero-bottom{border-color:#557e9542}
.hero-copy>.eyebrow>span{background:#997943}
.hero-art .art-coordinate{color:#466d85}
.hero-art .art-label{color:#315f7a}
.about{background:#b9d9eb;border-top:1px solid #557e9530}
.about-prose p,.about .section-meta,.about .program-facts p>span{color:#365b72}
.program-facts,.program-facts>div{border-color:#648ca34d}
.blue-section{background:#cbe2ef}
.notebook{background:#f8fcfe;border-color:#93b9ce;box-shadow:0 24px 60px #3265820b}
.curriculum-tabs button[aria-selected=true]{background:#f7fbfe}
.curriculum-tabs button:hover{background:#e8f4fb}
.practice{background:#b9d9eb}
.practice .project-art{background:#f4f9fc}
.practice .filter-bar,.practice .project{border-color:#648ca34d}
.practice .project-tags>span{border-color:#6c92a94d;color:#365b72}
.practice .project:hover{background:#d9ebf5}
.practice .subtle-note,.practice .project-copy p,.practice .section-heading>p,.practice .section-meta,.practice .filter-bar>.mono{color:#365b72}
.faq{background:#cbe2ef}
.faq-list,details{border-color:#6c92a944}
.evidence{background:#173c55}
.orbit-point{background:#173c55}
.join{background:#b9d9eb}
footer{background:#f8fcfe}
@media(max-width:640px){.site-header{background:#b9d9ebed}.site-header nav{background:#b9d9eb}.hero{background:#b9d9eb}}
.code-comment{color:#526e80}.cell-label,.notebook-footer{color:#536f80}.curriculum-tabs button .mono{color:#48687c}
.section-meta{color:#3f596b}.notebook-bar{color:#466477}.sample-table>div:first-child{color:#466477}
@media(prefers-reduced-motion:reduce){#motion-toggle{display:none}}

/* Keep explanatory copy readable on narrow screens. */
@media(max-width:640px){.hero-description{font-size:12px}.about-prose p,.stage-copy>p:not(.eyebrow,.stage-outcome),.evidence-copy>p,.section-heading>p{font-size:13px}.project-copy p,.evidence-list p{font-size:12px}.project-copy h3>span{font-size:13px}.subtle-note{font-size:11px}.faq-intro,details>p{font-size:13px}summary{font-size:14px}.program-facts p{font-size:11px}.program-facts p>span{font-size:10px}.hero-actions .button,.hero-actions .text-button{font-size:12px}}