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@media(max-width:720px){#vertex-flow .diagnostic-layout{grid-template-columns:1fr;gap:35px}#vertex-flow .diagnostic-form{padding:23px}#vertex-flow .vf-nav a{min-height:44px;display:flex;align-items:center}#vertex-flow .vf-header{gap:10px}#vertex-flow .vf-logo{min-width:110px}#vertex-flow .vf-header>.vf-button{font-size:11px}#vertex-flow .vf-resource .vf-plain{min-height:44px}#vertex-flow .vf-readingimg{max-width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}#vertex-flow #main>section:first-child{animation:none}}
#vertex-flow .diagnostic-form__intro{margin-bottom:28px}#vertex-flow .field--agreement{display:grid;grid-template-columns:20px 1fr;gap:12px;align-items:start}#vertex-flow .field--agreement input[type=checkbox]{min-height:20px;padding:0;margin:4px 0 0}#vertex-flow .field--agreement label{font-weight:400;font-size:13px;line-height:1.7}#vertex-flow .field--agreement .field-error{grid-column:1 / -1}
#vertex-flow .vf-hero>img{width:58%;left:auto;right:0;object-position:center 53%}#vertex-flow .vf-hero:before{background:linear-gradient(90deg,#051726 0%,#051726 37%,#051726a8 57%,#05172608 90%)}#vertex-flow .vf-player{aspect-ratio:9/16;width:100%;max-width:320px;height:auto!important;justify-self:center}#vertex-flow .vf-player video{aspect-ratio:9/16;object-fit:contain;height:auto}#vertex-flow .review-stars{color:#fbbc04;letter-spacing:3px;font-size:23px;margin:14px 0}#vertex-flow .vf-review{min-width:310px}#vertex-flow .vf-reviewtrack{align-items:stretch}#vertex-flow .social-section{text-align:center;background:#f5fafc}#vertex-flow .social-section>p{margin:20px auto;max-width:560px}#vertex-flow .social-badges{display:flex;justify-content:center;gap:34px;flex-wrap:wrap;margin-top:45px}#vertex-flow .social-badge{display:flex;align-items:center;gap:20px;padding:20px 28px;border:1px solid #d8e6ef;border-radius:60px;background:white;text-decoration:none;text-align:left}#vertex-flow 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.vf-lightmark{background:linear-gradient(transparent 72%,#d8f0f7 72%,#d8f0f7 94%,transparent 94%);box-decoration-break:clone}#vertex-flow .vf-seniorlead .vf-lightmark{background:none;text-decoration:underline;text-decoration-color:#66c3e5;text-underline-offset:9px;text-decoration-thickness:3px}#vertex-flow .location-section{display:grid;grid-template-columns:1fr 1fr;gap:45px;padding-top:15px}#vertex-flow .location-section p{margin:18px 0}#vertex-flow .map-shell{min-height:340px;border-radius:18px;background:#edf5f8;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:20px;text-align:center}#vertex-flow .map-shell iframe{width:100%;height:340px;border:0;border-radius:12px}#vertex-flow .journal-image{position:relative;margin-bottom:22px}#vertex-flow .journal-image img{height:280px}#vertex-flow .journal-tag{position:absolute;bottom:16px;left:16px;background:white;padding:7px 12px;border-radius:30px;color:#174785;font-size:11px;font-weight:800}#vertex-flow .journal-card>p{margin:14px 0 16px}#vertex-flow .research-reading{grid-template-columns:minmax(0,2.5fr) minmax(210px,1fr)}#vertex-flow .research-reading .vf-readingimg{height:350px}#vertex-flow .article-intro{font-size:20px;line-height:1.7}#vertex-flow .study-step{position:relative;padding:36px 0 26px;border-bottom:1px solid #dbe7ef}#vertex-flow .step-number{display:inline-block;font:700 17px 'Roboto Mono',monospace;color:#267b9b;background:#e8f6fb;padding:7px 12px;border-radius:30px;margin-bottom:10px}#vertex-flow .study-step h2{font-size:30px;margin:10px 0 20px;letter-spacing:-.9px}#vertex-flow .study-step p{font-size:16px;line-height:1.9}#vertex-flow .study-step a{color:#17568b;text-decoration-thickness:1px;text-underline-offset:3px}#vertex-flow .try-it{margin-top:24px;padding:19px 23px;border-left:3px solid #66c3e5;background:#f1f8fb;font-weight:600;font-size:15px}#vertex-flow .research-sources{padding:40px 0}#vertex-flow .research-sources h2,#vertex-flow .understanding-quiz h2{font-size:29px}#vertex-flow .research-sources li{margin:12px 0;font-size:14px}#vertex-flow .understanding-quiz{padding:30px;background:#f1f7fb;border-radius:20px}#vertex-flow .understanding-quiz fieldset{border:0;border-top:1px solid #c7dae7;margin:28px 0;padding:22px 0 0}#vertex-flow .understanding-quiz legend{font-weight:700;padding-top:24px;font-size:16px}#vertex-flow .understanding-quiz label{display:flex;align-items:baseline;gap:10px;background:white;border:1px solid #d5e3ec;padding:12px 15px;margin-top:10px;border-radius:8px;cursor:pointer;font-size:14px}#vertex-flow .understanding-quiz label:has(input:checked){border-color:#174785;background:#e4f1fa}#vertex-flow .understanding-quiz input{accent-color:#174785}#vertex-flow .quiz-result{margin-top:20px!important;font-weight:700}#vertex-flow .quiz-explanation{font-size:14px;margin-top:16px!important;color:#174785}#vertex-flow .understanding-quiz [data-correct=true] legend:after{content:' ✓';color:#187351}#vertex-flow .understanding-quiz [data-correct=false] legend:after{content:' — revisit this one';color:#8a451f;font-size:13px}
@media(max-width:720px){#vertex-flow .vf-hero>img{width:100%;object-position:center 57%}#vertex-flow .vf-hero:before{background:linear-gradient(#051726 0%,#051726ef 27%,#051726a0 55%,#05172612 90%)}#vertex-flow .location-section,#vertex-flow .research-reading{grid-template-columns:1fr}#vertex-flow .research-reading aside{order:0}#vertex-flow .social-badge{width:100%;max-width:330px}#vertex-flow .research-reading .vf-readingimg{height:230px}#vertex-flow .understanding-quiz{padding:23px}#vertex-flow .vf-player{max-width:300px}}
@media(prefers-reduced-motion:reduce){#vertex-flow .badge-stack img{transition:none}#vertex-flow .social-badge:is(:hover,:focus-visible) img{transform:none}}
#vertex-flow .vf-philosophy{grid-template-columns:1fr 1.15fr;gap:45px}#vertex-flow .teaching-videos{display:grid;grid-template-columns:1.42fr 1fr;gap:18px;align-items:start}#vertex-flow .video-option{margin:0;min-width:0}#vertex-flow .video-option video{display:block;width:100%;height:auto;object-fit:contain;background:#102d4f;border-radius:14px}#vertex-flow .video-intro video{aspect-ratio:4/5}#vertex-flow .video-demo video{aspect-ratio:9/16}#vertex-flow .video-option figcaption{padding:14px 2px;font-size:13px}#vertex-flow .video-option figcaption span{display:block;font-size:11px;color:#597488;margin-top:3px}#vertex-flow .junior-support-note{padding:45px;border-left:3px solid #66c3e5;background:linear-gradient(110deg,#eff8fc,white)}#vertex-flow .junior-support-note p{margin:20px 0}#vertex-flow .practice-samples{padding-top:30px}#vertex-flow .sample-question-list{margin:40px 0 25px}#vertex-flow .sample-question{display:grid;grid-template-columns:55px 1fr;gap:20px;border-top:1px solid #dce7ee;padding:28px 0}#vertex-flow .sample-question .step-number{height:fit-content;font-size:15px}#vertex-flow .sample-question h3{font-size:21px;line-height:1.5;letter-spacing:-.3px}#vertex-flow .sample-options{display:flex;gap:30px 70px;flex-wrap:wrap;padding-left:24px;margin:25px 0;color:#345b76}#vertex-flow .sample-options li{padding-left:8px;min-width:100px}#vertex-flow .working-prompt{display:block;color:#667c8b;font-size:12px;margin-top:18px}#vertex-flow .sample-triangle{width:100%;max-width:460px;height:auto;object-fit:contain;margin:24px 0}
@media(max-width:900px){#vertex-flow .vf-philosophy{grid-template-columns:1fr}#vertex-flow .teaching-videos{max-width:580px;width:100%;margin:0 auto}}@media(max-width:480px){#vertex-flow .teaching-videos{gap:12px}#vertex-flow .video-option figcaption{font-size:12px}#vertex-flow .video-option figcaption span{font-size:10px}#vertex-flow .sample-question{grid-template-columns:38px 1fr;gap:12px}#vertex-flow .sample-options{gap:14px 34px}#vertex-flow .sample-question h3{font-size:18px}#vertex-flow .junior-support-note{padding:25px}}

/* Original cover: roughly 10% wider framing with a subtle colour lift. */
#vertex-flow .vf-hero>img{width:52.2%;object-position:center 53%;filter:brightness(1.06) saturate(1.08)}
#vertex-flow [data-contact-section]>img{object-position:center 15%}
@media(max-width:720px){#vertex-flow .vf-hero>img{width:90%;object-position:center 57%}}

/* Show the full centre entrance at every viewport width. */
#vertex-flow .vf-contact-centre>img{width:100%;max-width:480px;height:auto;aspect-ratio:1080/1399;object-fit:contain;object-position:center;justify-self:center}