/* Responsive layout */
@media (max-width: 1100px) {
  :root { --section-space: 82px; }
  .container { width: min(var(--container), calc(100% - 48px)); }
  .primary-nav { gap: 18px; }
  .primary-nav > a:not(.button) { font-size: .7rem; }
  .hero-grid { gap: 48px; }
  .hero-visual > img { min-height: 440px; }
  .feature-card { padding-right: 16px; }
  .feature-card + .feature-card { padding-left: 16px; }
  .program-image img { height: 280px; }
  .program-body { padding: 24px 18px; }
  .enrollment-layout { gap: 48px; }
}
@media (max-width: 900px) {
  .header-inner { min-height: 74px; }
  .menu-toggle { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; padding: 10px; border: 1px solid var(--line); background: transparent; cursor: pointer; }
  .menu-toggle span { display: block; width: 100%; height: 2px; background: var(--ink); transition: transform .2s ease, opacity .2s ease; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-7px) rotate(-45deg); }
  .primary-nav { position: fixed; top: 74px; right: 0; bottom: 0; left: 0; display: flex; flex-direction: column; align-items: stretch; gap: 0; padding: 20px 24px 40px; background: var(--white); visibility: hidden; opacity: 0; transform: translateY(-8px); transition: opacity .2s ease, transform .2s ease, visibility .2s; overflow-y: auto; }
  .primary-nav.is-open { visibility: visible; opacity: 1; transform: translateY(0); }
  .primary-nav > a:not(.button) { padding: 17px 0; border-bottom: 1px solid var(--line); font-size: .9rem; }
  .primary-nav .nav-cta { margin-top: 24px; }
  .hero { padding-top: 40px; }
  .hero-grid { grid-template-columns: 1fr .82fr; gap: 28px; }
  .hero h1 { font-size: clamp(2.65rem, 6vw, 4rem); }
  .hero-visual > img { min-height: 420px; height: 58vw; }
  .hero-stamp { right: -16px; width: 90px; height: 90px; font-size: .53rem; }
  .intro-strip-inner { grid-template-columns: 1fr auto; gap: 12px 20px; }
  .intro-strip .eyebrow { grid-column: 1; }
  .intro-strip-copy { grid-column: 1; }
  .round-link { grid-column: 2; grid-row: 1 / span 2; }
  .section-heading-split { gap: 30px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .feature-card { min-height: 235px; padding: 25px !important; }
  .feature-card:nth-child(odd) { border-left: 0; }
  .feature-card:nth-child(n+3) { border-top: 1px solid var(--line); }
  .feature-card + .feature-card { border-left: 1px solid var(--line); }
  .feature-card:nth-child(3) { border-left: 0; }
  .program-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
  .program-card:last-child { grid-column: 1 / -1; display: grid; grid-template-columns: .8fr 1fr; }
  .program-card:last-child .program-image img { height: 100%; min-height: 330px; }
  .program-card-featured { transform: none; }
  .roadmap-layout, .instructor-layout, .faq-layout { gap: 44px; }
  .instructor-image img { height: 540px; }
  .enrollment-layout { grid-template-columns: 1fr .9fr; gap: 30px; }
  .enrollment-card { padding: 26px; }
  .lead-layout { grid-template-columns: .8fr 1fr; gap: 35px; }
  .lead-form { padding: 28px; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-links { grid-column: 1 / -1; }
}
@media (max-width: 767px) {
  :root { --section-space: 64px; }
  html { scroll-padding-top: 76px; }
  body { font-size: 14px; padding-bottom: 62px; }
  .container { width: calc(100% - 40px); }
  .header-inner { min-height: 70px; }
  .brand-mark { width: 38px; height: 38px; }
  .brand-copy strong { font-size: .7rem; }
  .brand-copy small { font-size: .49rem; }
  .primary-nav { top: 70px; padding-inline: 20px; }
  .hero { padding: 30px 0 38px; }
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-content { padding: 16px 0 0; }
  .hero-content .eyebrow { margin-bottom: 20px; font-size: .61rem; }
  h1 { font-size: clamp(2.55rem, 10vw, 3.6rem); }
  h2 { font-size: clamp(2.1rem, 8vw, 3rem); }
  .hero h1 { margin-bottom: 18px; }
  .hero-description { font-size: .9rem; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 20px; margin-top: 25px; }
  .hero-actions .button { width: 100%; }
  .hero-note { margin-top: 27px; font-size: .68rem; }
  .hero-visual { justify-self: stretch; max-width: none; }
  .hero-visual > img { height: 112vw; min-height: 350px; max-height: 540px; object-position: center 30%; }
  .hero-stamp { right: 12px; bottom: 48px; }
  .hero-image-label { font-size: .52rem; }
  .intro-strip-inner { padding-block: 23px; gap: 8px 16px; }
  .intro-strip .eyebrow { font-size: .57rem; }
  .intro-strip-copy { font-size: 1rem; }
  .round-link { width: 36px; height: 36px; }
  .section-heading { margin-bottom: 32px; }
  .section-heading-split { grid-template-columns: 1fr; gap: 4px; }
  .section-heading-split .section-lead { justify-self: start; margin: 10px 0 0; }
  .section-lead { font-size: .9rem; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .feature-card { min-height: 220px; padding: 19px 14px !important; }
  .feature-card + .feature-card { border-left: 1px solid var(--line); }
  .feature-card:nth-child(odd) { border-left: 0; }
  .feature-icon { width: 42px; height: 42px; margin: 18px 0 15px; }
  .feature-card h3 { font-size: .92rem; }
  .feature-card p { font-size: .73rem; }
  .program-grid { grid-template-columns: 1fr; gap: 22px; }
  .program-card:last-child { display: block; grid-column: auto; }
  .program-image img, .program-card:last-child .program-image img { height: 100vw; min-height: 300px; max-height: 430px; }
  .program-body { padding: 24px 20px 26px; }
  .program-body > p:not(.eyebrow) { min-height: 0; }
  .roadmap-layout, .instructor-layout, .faq-layout, .enrollment-layout, .lead-layout { grid-template-columns: 1fr; gap: 38px; }
  .roadmap-intro { position: static; }
  .roadmap-intro .button { width: 100%; }
  .timeline-item { grid-template-columns: 48px 1fr; gap: 14px; padding: 21px 0; }
  .timeline-number { font-size: 1.45rem; }
  .timeline-item h3 { font-size: 1rem; }
  .timeline-item p { font-size: .78rem; }
  .instructor-layout { gap: 32px; }
  .instructor-image img { height: 110vw; min-height: 330px; max-height: 500px; }
  .image-caption { font-size: .47rem; }
  .gallery-grid { grid-template-columns: 1fr 1fr; grid-template-rows: 300px 190px; gap: 10px; }
  .gallery-tall { grid-row: span 2; }
  .gallery-item figcaption { gap: 7px; padding: 12px 10px; font-size: .52rem; }
  .enrollment-section { padding-block: 64px; }
  .enrollment-card { padding: 24px 20px; }
  .faq-layout { gap: 22px; }
  .faq-item summary { padding: 18px 0; font-size: .8rem; }
  .faq-item p { font-size: .76rem; }
  .lead-layout { gap: 28px; }
  .lead-copy { padding-top: 0; }
  .lead-contact { margin-top: 25px; }
  .lead-form { padding: 25px 20px; }
  .footer-main { grid-template-columns: 1fr; gap: 22px; padding-block: 34px; }
  .footer-links { grid-column: auto; gap: 15px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
  .mobile-sticky-cta { position: fixed; z-index: 90; right: 12px; bottom: 10px; left: 12px; display: flex; justify-content: center; align-items: center; gap: 14px; min-height: 48px; padding: 12px 16px; background: var(--accent); color: var(--ink); box-shadow: 0 5px 24px rgba(0,0,0,.18); font-size: .73rem; font-weight: 800; letter-spacing: .06em; }
}
@media (max-width: 380px) {
  .container { width: calc(100% - 30px); }
  .brand { gap: 8px; }
  .brand-copy strong { font-size: .64rem; }
  .brand-copy small { font-size: .44rem; }
  .hero h1 { font-size: 2.35rem; }
  .feature-card { padding-inline: 10px !important; }
  .feature-card h3 { font-size: .84rem; }
  .gallery-grid { grid-template-rows: 250px 160px; }
}