.lecture-intro { margin-top: 38px; padding: clamp(24px, 5vw, 44px); }
.lecture-intro h1 { max-width: 720px; letter-spacing: -.045em; }
.lecture-intro-copy { max-width: 700px; margin: 17px 0 0; font-size: 18px; line-height: 1.65; }
.lecture-intro form { max-width: 700px; }
.lecture-cta-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: stretch; }
.lecture-cta-row > button, .lecture-cta-row > a { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; padding: 11px 16px; }
.lecture-cta-row > a { color: var(--ink); font-size: 14px; }
.lecture-cta-row > a:hover, .lecture-cta-row > a:focus-visible { border-color: var(--accent); color: var(--accent); }
.lecture-price-note { max-width: 700px; margin: 20px 0 0; padding: 15px 17px; border: 1px solid #ead7cc; border-radius: 10px; background: #fff8f2; color: #55584f; font-size: 14px; }
.lecture-price-note strong { color: var(--ink); }
.lecture-how { margin-top: 64px; }
.lecture-how h2 { margin: 0 0 7px; font-size: clamp(27px, 4vw, 36px); line-height: 1.15; letter-spacing: -.04em; }
.lecture-how > .muted { max-width: 730px; margin: 0 0 24px; }
.lecture-step-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 15px; }
.lecture-step { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: var(--paper); }
.lecture-step > a { display: block; overflow: hidden; aspect-ratio: 720 / 470; border-bottom: 1px solid var(--line); background: #ebe8df; }
.lecture-step img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .2s ease; }
.lecture-step > a:hover img, .lecture-step > a:focus-visible img { transform: scale(1.025); }
.lecture-step > div { padding: 17px; }
.lecture-step-number { color: var(--accent); font: 700 11px ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .1em; }
.lecture-step h3 { margin: 8px 0 5px; font-size: 17px; line-height: 1.25; }
.lecture-step p { margin: 0; color: #686b61; font-size: 13px; line-height: 1.5; }
.lecture-example-link { display: inline-flex; margin-top: 22px; font-weight: 750; text-decoration: none; }
.lecture-example-link:hover, .lecture-example-link:focus-visible { text-decoration: underline; }
@media (max-width: 700px) {
  .lecture-step-grid { grid-template-columns: 1fr; }
  .lecture-step { display: grid; grid-template-columns: minmax(0, 44%) minmax(0, 1fr); }
  .lecture-step > a { height: 100%; aspect-ratio: auto; border-bottom: 0; border-right: 1px solid var(--line); }
  .lecture-step > div { align-self: center; }
  .lecture-how { margin-top: 46px; }
}
@media (max-width: 450px) {
  .lecture-cta-row > button, .lecture-cta-row > a { width: 100%; }
  .lecture-step { display: block; }
  .lecture-step > a { aspect-ratio: 720 / 470; border-right: 0; border-bottom: 1px solid var(--line); }
}
@media (prefers-reduced-motion: reduce) { .lecture-step img { transition: none; } }