.free-course-page [hidden] { display: none !important; }
.free-course-label { margin: 0 0 16px; color: var(--green-deep); font-size: 13px; font-weight: 700; }
.free-course-feature { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 56px; align-items: center; margin-bottom: 80px; padding: 40px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); }
.free-course-feature h2 { margin-bottom: 20px; font: 700 clamp(26px, 3vw, 36px)/1.4 var(--display); letter-spacing: -0.045em; }
.free-course-feature-copy > p:not(.free-course-label):not(.free-course-feature-note) { max-width: 620px; margin-bottom: 18px; color: var(--muted); font-size: 15px; }
.free-course-feature-meta { color: var(--muted); font-size: 13px; }
.free-course-feature-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 26px; }
.free-course-feature-actions .button { font-size: 14px; }
.free-course-feature-note { margin: 12px 0 0; color: var(--muted); font-size: 12px; }
.free-course-map { display: grid; gap: 0; }
.free-course-map > div { position: relative; display: grid; grid-template-columns: 38px 1fr; gap: 2px 14px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.free-course-map > div:first-child { border-top: 1px solid var(--line); }
.free-course-map span { grid-row: span 2; align-self: center; color: var(--green-deep); font: 500 15px var(--mono); }
.free-course-map strong { font-size: 15px; font-weight: 600; }
.free-course-map small { color: var(--muted); font-size: 12px; }

.course-language { display: flex; padding: 3px; border: 1px solid var(--line); border-radius: 999px; }
.course-language a { padding: 5px 9px; border-radius: 999px; font: 500 11px/1.2 var(--mono); }
.course-language a[aria-current] { color: var(--white); background: var(--ink); }
.free-course-page .desktop-menu a[aria-current]::after { right: 0; }
.course-wrap { max-width: var(--max); margin: 0 auto; padding: 34px var(--pad) 80px; }
.course-breadcrumb { display: flex; gap: 12px; margin-bottom: 36px; color: var(--muted); font-size: 13px; }
.course-breadcrumb a:hover { color: var(--ink); text-decoration: underline; }
.course-overview-hero { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.9fr); align-items: center; gap: 64px; }
.course-overview-hero h1 { margin-bottom: 24px; font: 700 clamp(32px, 3.4vw, 47px)/1.35 var(--display); letter-spacing: -0.055em; }
.course-description { max-width: 640px; margin-bottom: 20px; color: var(--muted); font-size: 16px; line-height: 1.85; }
.free-course-page .course-meta { max-width: none; color: var(--muted); font: 400 13px/1.7 var(--body); text-align: left; }
.course-overview-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 30px; }
.course-start-note { margin: 12px 0 0; color: var(--muted); font-size: 12px; }
.course-saved-progress { margin: 10px 0 0; color: var(--green-deep); font-size: 13px; font-weight: 600; }
.course-start { font-size: 14px; }
.course-cover { overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background: var(--white); }
.course-cover > img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.course-cover > span { display: flex; align-items: center; justify-content: center; gap: 12px; padding: 18px; font-size: 14px; font-weight: 600; }
.course-cover i { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--green); color: var(--ink); font-size: 11px; font-style: normal; }
.course-overview-content { margin-top: 64px; }
.course-overview-content h2, .course-paid h2, .course-conclusion h2 { margin-bottom: 16px; font: 700 25px/1.5 var(--display); letter-spacing: -0.04em; }
.course-outcomes { padding: 34px 0; border-top: 1px solid var(--line); }
.course-outcomes ul { display: grid; gap: 13px; margin: 0 0 22px; padding: 0; list-style: none; }
.course-outcomes li { display: flex; gap: 12px; }
.course-outcomes li span { color: var(--green-deep); font-weight: 700; }
.course-outcomes > p, .course-audience p { max-width: 790px; color: var(--muted); font-size: 14px; }
.course-audience { padding: 20px 0 40px; }
.course-section-heading > p { max-width: 800px; margin-bottom: 26px; color: var(--muted); font-size: 14px; }
.course-outline { scroll-margin-top: 110px; padding-top: 30px; border-top: 1px solid var(--line); }
.course-curriculum { overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background: var(--white); }
.curriculum-section + .curriculum-section { border-top: 1px solid var(--line); }
.curriculum-section > header { display: flex; align-items: center; gap: 16px; padding: 22px 24px 12px; }
.curriculum-section-number { flex-shrink: 0; color: var(--green-deep); font: 500 13px var(--mono); }
.curriculum-section header h3 { margin: 0; font-size: 16px; font-weight: 600; }
.curriculum-section header p { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
.curriculum-section-duration { margin-left: auto; color: var(--muted); font-size: 12px; white-space: nowrap; }
.curriculum-section ol { margin: 0; padding: 0 0 12px; list-style: none; }
.curriculum-lesson { display: flex; align-items: center; gap: 14px; min-height: 60px; padding: 12px 24px; font-size: 14px; line-height: 1.55; }
.curriculum-lesson:hover { background: #f5f8f1; }
.lesson-indicator { display: grid; flex-shrink: 0; place-items: center; width: 27px; height: 27px; border: 1px solid var(--line); border-radius: 50%; color: var(--muted); font-size: 11px; }
.curriculum-lesson-name { min-width: 0; }
.curriculum-lesson-duration { margin-left: auto; flex-shrink: 0; color: var(--muted); font-size: 12px; }
.curriculum-lesson[aria-current] { background: var(--green-soft); }
.curriculum-lesson[aria-current] .curriculum-lesson-name { font-weight: 600; }
.curriculum-lesson.is-complete .lesson-indicator { border-color: var(--green-deep); color: var(--green-deep); }
.lesson-source-link { display: inline-block; margin: 0 24px 12px 66px; color: var(--green-deep); font-size: 13px; text-decoration: underline; }
.course-outline-action { display: flex; flex-wrap: wrap; align-items: center; gap: 26px; margin-top: 26px; }
.course-paid { margin-top: 64px; padding-top: 30px; border-top: 1px solid var(--line); }
.course-paid-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.course-paid-card { overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background: var(--white); }
.course-paid-card > img { width: 100%; height: auto; aspect-ratio: 403 / 262; object-fit: cover; }
.course-paid-card > div { padding: 24px; }
.course-paid-label { color: var(--muted); font-size: 12px; }
.course-paid-card h3 { margin: 12px 0; font: 700 20px/1.5 var(--display); letter-spacing: -0.04em; }
.course-paid-card p { margin-bottom: 18px; color: var(--muted); font-size: 14px; }
.course-paid-card .course-requirement { font-size: 12px; }
.course-requirement strong { display: block; margin-bottom: 4px; color: var(--ink); font-weight: 500; }
.course-paid-card a { display: inline-block; color: var(--green-deep); font-size: 14px; font-weight: 600; }
.course-paid-card a:hover { text-decoration: underline; }
.course-faq { margin-top: 64px; }
.course-faq details { border-bottom: 1px solid var(--line); }
.course-faq summary { padding: 20px 0; cursor: pointer; font-size: 15px; font-weight: 500; }
.course-faq details p { max-width: 780px; margin: 0 0 22px; color: var(--muted); font-size: 14px; }
.course-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px; padding: 30px var(--pad); border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.course-footer nav { display: flex; flex-wrap: wrap; gap: 22px; }
.course-footer a:hover { color: var(--ink); text-decoration: underline; }

.course-catalog { padding-top: 72px; padding-bottom: 90px; }
.course-catalog-heading { max-width: 760px; margin-bottom: 48px; }
.course-catalog-heading h1 { margin-bottom: 24px; font: 700 clamp(32px, 3.6vw, 47px)/1.4 var(--display); letter-spacing: -0.05em; }
.course-catalog-heading > p:last-child { max-width: 660px; color: var(--muted); font-size: 16px; }
.course-catalog-card { display: grid; grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.3fr); overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: var(--white); }
.course-catalog-cover { position: relative; align-self: center; margin: 28px; overflow: hidden; border-radius: 8px; }
.course-catalog-cover img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.course-catalog-cover > span { position: absolute; top: 12px; left: 12px; padding: 3px 10px; border-radius: 4px; background: var(--green); color: var(--ink); font-size: 12px; font-weight: 700; }
.course-catalog-copy { padding: 36px 36px 36px 8px; }
.course-catalog-copy h2 { margin-bottom: 18px; font: 700 clamp(23px, 2.4vw, 30px)/1.45 var(--display); letter-spacing: -0.04em; }
.course-catalog-copy > p:not(.course-meta):not(.course-start-note):not(.course-saved-progress) { color: var(--muted); font-size: 14px; }
.course-catalog-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 26px; }
.course-catalog-actions .text-link { font-size: 13px; }
.course-catalog-bottom { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 36px; color: var(--muted); font-size: 14px; }
.course-catalog-bottom p { margin: 0; }
.course-catalog-bottom a { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }

.learn-topbar { display: flex; align-items: center; gap: 28px; padding: 14px 32px; border-bottom: 1px solid var(--line); font-size: 13px; }
.learn-topbar > a { flex-shrink: 0; color: var(--green-deep); font-weight: 600; }
.learn-topbar > span { overflow: hidden; color: var(--muted); text-overflow: ellipsis; white-space: nowrap; }
.learn-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 32px; max-width: 1480px; margin: 0 auto; padding: 30px 32px 64px; }
.learn-sidebar { grid-column: 2; grid-row: 1; position: sticky; top: 98px; align-self: start; max-height: calc(100svh - 120px); overflow: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--white); }
.learn-sidebar details > summary { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px; cursor: pointer; list-style: none; font-size: 15px; font-weight: 600; }
.learn-sidebar details > summary::-webkit-details-marker { display: none; }
.learn-sidebar details > summary > span:last-child { color: var(--muted); font-size: 12px; font-weight: 400; }
.learn-progress { padding: 0 18px 16px; border-bottom: 1px solid var(--line); }
.learn-progress label { color: var(--green-deep); font-size: 12px; font-weight: 600; }
.learn-progress progress { display: block; width: 100%; height: 5px; margin-top: 10px; border: 0; border-radius: 4px; background: var(--paper-soft); accent-color: var(--green-deep); }
.learn-progress progress::-webkit-progress-bar { border-radius: 4px; background: var(--paper-soft); }
.learn-progress progress::-webkit-progress-value { border-radius: 4px; background: var(--green-deep); }
.learn-progress progress::-moz-progress-bar { border-radius: 4px; background: var(--green-deep); }
.learn-progress p { margin: 10px 0 0; color: var(--muted); font-size: 10px; line-height: 1.6; }
.learn-sidebar .course-curriculum { border: 0; border-radius: 0; }
.learn-sidebar .curriculum-section > header { gap: 9px; padding: 18px 16px 8px; }
.learn-sidebar .curriculum-section header h3 { font-size: 12px; }
.learn-sidebar .curriculum-section-number { font-size: 10px; }
.learn-sidebar .curriculum-lesson { gap: 10px; padding: 12px 16px; font-size: 12px; }
.learn-sidebar .curriculum-lesson-duration { font-size: 10px; }
.learn-sidebar .lesson-indicator { width: 23px; height: 23px; font-size: 10px; }
.lesson-main { grid-column: 1; grid-row: 1; min-width: 0; }
.lesson-player { position: relative; overflow: hidden; display: grid; place-items: center; width: 100%; min-height: 200px; aspect-ratio: 16 / 9; scroll-margin-top: 98px; border-radius: 12px; background: #000; color: var(--white); }
.lesson-player iframe { position: absolute; inset: 0; display: block; width: 100%; height: 100%; border: 0; }
.lesson-player noscript { padding: 28px; font-size: 14px; }
.lesson-player noscript a { color: var(--green); text-decoration: underline; }
.lesson-poster { position: absolute; inset: 0; display: block; width: 100%; height: 100%; padding: 0; border: 0; background: #000; color: var(--white); cursor: pointer; }
.lesson-poster img { width: 100%; height: 100%; object-fit: cover; }
.lesson-poster::after { content: ""; position: absolute; inset: 0; background: linear-gradient(transparent 40%, rgba(0,0,0,0.7)); pointer-events: none; }
.lesson-poster-action { position: absolute; z-index: 1; left: 50%; bottom: 28px; transform: translateX(-50%); display: flex; justify-content: center; align-items: center; gap: 12px; max-width: calc(100% - 32px); padding: 12px 20px; border-radius: 6px; background: var(--white); color: var(--ink); font-size: 14px; font-weight: 600; white-space: nowrap; }
.lesson-poster-action::before { content: "▶"; color: var(--green-deep); font-size: 11px; }
.lesson-poster:focus-visible { outline-offset: -5px; }
.player-status { margin: 8px 0 0; color: var(--muted); font-size: 12px; }
.player-status:empty { display: none; }
.lesson-heading { padding: 28px 0 22px; }
.lesson-section { margin-bottom: 12px; color: var(--green-deep); font-size: 12px; }
.lesson-heading h1 { margin-bottom: 14px; font: 700 clamp(23px, 2.3vw, 31px)/1.5 var(--display); letter-spacing: -0.045em; }
.lesson-heading > p:not(.lesson-section) { max-width: 820px; margin-bottom: 14px; color: var(--muted); font-size: 14px; }
.lesson-youtube { color: var(--green-deep); font-size: 12px; font-weight: 500; }
.lesson-youtube:hover { text-decoration: underline; }
.lesson-player-help { display: inline-block; margin-left: 12px; color: var(--muted); font-size: 11px; }
.lesson-controls { display: flex; flex-wrap: wrap; justify-content: flex-end; align-items: center; gap: 14px; padding-bottom: 26px; border-bottom: 1px solid var(--line); }
.lesson-controls > a:first-child { margin-right: auto; color: var(--muted); font-size: 13px; }
.lesson-controls button { min-height: 44px; padding: 10px 18px; border: 1px solid var(--line); border-radius: 6px; background: var(--white); font-size: 13px; cursor: pointer; }
.lesson-controls button[aria-pressed="true"] { color: var(--green-deep); border-color: var(--green-deep); }
.lesson-controls .button { min-height: 44px; padding: 12px 20px; font-size: 13px; }
.lesson-takeaway { margin-top: 28px; padding: 24px; border-left: 3px solid var(--green-deep); border-radius: 0 8px 8px 0; background: var(--white); }
.lesson-takeaway h2, .lesson-application h2 { margin-bottom: 10px; font-size: 15px; font-weight: 600; }
.lesson-takeaway p { margin: 0; font-size: 15px; line-height: 1.85; }
.lesson-application { padding: 28px 0 20px; }
.lesson-application > p { max-width: 800px; color: var(--muted); font-size: 14px; }
.lesson-notes summary, .lesson-source summary { cursor: pointer; font-size: 12px; color: var(--muted); }
.lesson-notes textarea { width: 100%; margin-top: 14px; padding: 14px; border: 1px solid var(--line); border-radius: 6px; background: var(--white); color: var(--ink); font: inherit; font-size: 14px; line-height: 1.7; resize: vertical; }
.lesson-notes-caption { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; color: var(--muted); font-size: 11px; }
.lesson-source { margin-bottom: 24px; }
.lesson-source p { margin: 12px 0 0; font-size: 13px; }
.lesson-paid-nudge { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; padding-top: 22px; border-top: 1px solid var(--line); font-size: 12px; }
.lesson-paid-nudge > span { color: var(--muted); }
.lesson-paid-nudge a { color: var(--green-deep); font-weight: 600; }
.lesson-paid-nudge a:hover { text-decoration: underline; }
.lesson-paid-nudge small { color: var(--muted); font-size: 11px; }
.course-finished { display: flex; gap: 18px; margin-top: 32px; padding: 24px; border: 1px solid var(--green-deep); border-radius: 8px; background: var(--green-soft); }
.course-finished > span { color: var(--green-deep); font-size: 24px; }
.course-finished h2 { margin: 0 0 8px; font-size: 18px; }
.course-finished p { margin: 0; font-size: 13px; }
.course-conclusion { margin-top: 38px; padding-top: 30px; border-top: 1px solid var(--line); scroll-margin-top: 110px; }
.course-conclusion > p { font-size: 16px; line-height: 1.9; }
.course-conclusion ul { padding-left: 22px; color: var(--muted); font-size: 14px; }
.course-conclusion li + li { margin-top: 10px; }
.lesson-main .course-paid { margin-top: 32px; }
.lesson-main .course-paid-card h3 { font-size: 17px; }
.lesson-main .course-paid-card > div { padding: 20px; }

@media (max-width: 1100px) {
  .course-overview-hero { gap: 36px; grid-template-columns: minmax(0, 1.2fr) minmax(270px, 0.8fr); }
  .free-course-feature { gap: 28px; padding: 32px; grid-template-columns: minmax(0, 1fr) 230px; }
  .learn-layout { gap: 24px; padding: 24px; grid-template-columns: minmax(0, 1fr) 300px; }
}
@media (max-width: 959px) {
  .learn-layout { display: flex; flex-direction: column; gap: 20px; max-width: 900px; }
  .learn-sidebar { position: static; width: 100%; max-height: none; }
  .learn-sidebar details > summary::after { content: "+"; color: var(--muted); font-size: 20px; font-weight: 400; }
  .learn-sidebar details[open] > summary::after { content: "−"; }
  .learn-sidebar details > summary > span:last-child { margin-left: auto; }
  .learn-topbar { padding: 14px 24px; }
  .lesson-heading h1 { font-size: 28px; }
}
@media (max-width: 760px) {
  .free-course-feature { grid-template-columns: 1fr; gap: 26px; padding: 26px; margin-bottom: 58px; }
  .free-course-map { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
  .free-course-map > div { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; padding: 12px 0 0; border-top: 1px solid var(--line); border-bottom: 0; }
  .free-course-map > div span { align-self: flex-start; font-size: 12px; }
  .free-course-map strong { font-size: 12px; }
  .free-course-map small { font-size: 10px; }
  .course-overview-hero { grid-template-columns: 1fr; gap: 28px; }
  .course-overview-hero h1 { max-width: 680px; font-size: 35px; }
  .course-cover { max-width: 540px; }
  .course-overview-content { margin-top: 40px; }
  .course-catalog-card { grid-template-columns: 1fr; }
  .course-catalog-cover { margin: 24px 24px 0; }
  .course-catalog-copy { padding: 24px; }
  .course-catalog { padding-top: 48px; }
  .course-catalog-heading { margin-bottom: 32px; }
  .course-paid-grid { gap: 16px; }
  .course-paid-card > div { padding: 20px; }
  .course-paid-card h3 { font-size: 18px; }
}
@media (max-width: 540px) {
  .free-course-feature { padding: 22px; }
  .free-course-feature h2 { font-size: 26px; }
  .free-course-feature-actions { gap: 16px; }
  .free-course-feature-actions .text-link { font-size: 12px; }
  .course-wrap { padding-top: 24px; padding-bottom: 54px; }
  .course-catalog { padding-top: 36px; }
  .course-catalog-heading h1 { font-size: 31px; }
  .course-catalog-heading > p:last-child { font-size: 14px; }
  .course-catalog-cover { margin: 18px 18px 0; }
  .course-catalog-copy { padding: 22px 18px; }
  .course-catalog-actions { gap: 16px; }
  .course-breadcrumb { margin-bottom: 28px; }
  .course-overview-hero h1 { font-size: 32px; }
  .course-description { font-size: 14px; }
  .course-overview-actions { gap: 18px; margin-top: 24px; }
  .course-overview-actions .text-link { font-size: 13px; }
  .curriculum-section > header { gap: 12px; padding: 20px 16px 12px; }
  .curriculum-section header h3 { font-size: 14px; }
  .curriculum-section header p { font-size: 11px; }
  .curriculum-section-duration { display: none; }
  .curriculum-lesson { gap: 10px; padding: 12px 16px; font-size: 12px; }
  .curriculum-lesson-duration { font-size: 11px; }
  .course-paid { margin-top: 46px; }
  .course-paid-grid { grid-template-columns: 1fr; gap: 24px; }
  .course-faq { margin-top: 46px; }
  .course-footer { padding: 24px 20px; }
  .learn-layout { gap: 16px; padding: 18px 16px 40px; }
  .learn-topbar { gap: 16px; padding: 12px 16px; font-size: 11px; }
  .lesson-player { border-radius: 8px; }
  .lesson-poster-action { bottom: 14px; padding: 10px 14px; font-size: 12px; }
  .lesson-heading { padding: 22px 0; }
  .lesson-heading h1 { font-size: 23px; }
  .lesson-section { font-size: 11px; }
  .lesson-heading > p:not(.lesson-section) { font-size: 13px; }
  .lesson-player-help { display: block; margin: 8px 0 0; }
  .lesson-controls { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 12px; }
  .lesson-controls > a:first-child { grid-column: 1 / -1; }
  .lesson-controls button, .lesson-controls .button { padding: 11px 10px; text-align: center; font-size: 12px; }
  .lesson-takeaway { padding: 20px; }
  .lesson-takeaway p { font-size: 14px; }
  .lesson-notes textarea { font-size: 16px; }
  .course-conclusion h2, .course-paid h2 { font-size: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  .free-course-page { scroll-behavior: auto; }
  .free-course-page * { transition: none !important; }
}