.course-page { color: #142d39; background: #fff; }
.course-page .container { max-width: 1240px; }
.course-hero { border-bottom: 1px solid #d9ddda; padding: clamp(3.5rem, 7vw, 6rem) 0 clamp(3rem, 5vw, 4.5rem); }
.course-hero .container { max-width: 1060px; }
.course-back, .course-breadcrumb a, .course-return { color: #a86f29; font-weight: 650; text-decoration: none; }
.course-back { display: inline-block; margin-bottom: 3rem; font-size: .95rem; }
.course-back::before { content: '←'; margin-right: .55rem; }
.course-hero .eyebrow, .course-lesson-header .eyebrow, .course-overview-grid .eyebrow, .course-reading-aside .eyebrow { color: #aa762e; letter-spacing: .07em; text-transform: uppercase; font-weight: 700; font-size: .8rem; }
.course-hero h1, .course-lesson-header h1 { max-width: 850px; margin: .4rem 0 1.1rem; color: #102b39; font-size: clamp(2.35rem, 5vw, 4rem); line-height: 1.09; letter-spacing: -.035em; }
.course-hero p:not(.eyebrow):not(.course-count) { max-width: 750px; margin: 0; font-size: clamp(1.1rem, 1.6vw, 1.35rem); line-height: 1.6; }
.course-count, .course-hero-meta { margin-top: 1.5rem; color: #53636a; font-size: .95rem; }
.course-hero-meta { display: flex; gap: 1.2rem; }
.course-button { display: inline-flex; align-items: center; min-height: 48px; margin-top: 2rem; padding: .7rem 1.3rem; background: #102b39; color: #fff; text-decoration: none; font-weight: 700; }
.course-button:hover, .course-button:focus-visible { background: #274a5c; color: #fff; }
.course-unavailable { margin-top: 1.7rem !important; padding: 1rem 1.2rem; border-left: 3px solid #ad7b38; background: #f6f5f1; font-size: 1rem !important; }
.course-section { padding: clamp(2.7rem, 5vw, 4.5rem) 0 5rem; }
.course-section-head { display: flex; align-items: baseline; gap: 1.5rem; border-top: 1px solid #d8deda; margin: 0 0 1.35rem; padding-top: 1.15rem; }
.course-section-head:not(:first-child) { margin-top: 3.5rem; }
.course-section-head h2, .course-overview-grid h2 { margin: 0; color: #102b39; font-size: clamp(1.5rem, 2.4vw, 2.1rem); letter-spacing: -.025em; }
.course-section-head p { margin: 0; color: #50616a; font-size: 1rem; }
.course-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin: 0; padding: 0; list-style: none; }
.course-card { display: flex; flex-direction: column; min-height: 245px; padding: 1.55rem 1.7rem; border: 1px solid #d9ddda; color: #142d39; text-decoration: none; transition: border-color .15s ease, background .15s ease; }
.course-card:hover, .course-card:focus-visible { border-color: #b17b37; background: #faf9f6; color: #142d39; }
.course-card-top, .course-card-foot { display: flex; justify-content: space-between; gap: 1rem; font-size: .85rem; font-weight: 700; color: #a17131; }
.course-access { color: #53636a; }
.course-card h3 { margin: 1.25rem 0 .55rem; font-size: clamp(1.25rem, 2vw, 1.6rem); line-height: 1.25; letter-spacing: -.02em; }
.course-card p { margin: 0 0 1.5rem; font-size: 1rem; line-height: 1.55; color: #4c5b61; }
.course-card-foot { margin-top: auto; color: #53636a; }
.course-card-foot strong { color: #a17131; }
.course-overview-grid { display: grid; grid-template-columns: minmax(0, 1fr) 285px; gap: clamp(2rem, 6vw, 5rem); }
.course-overview-grid h2 { margin: .4rem 0 .75rem; }
.course-overview-note { color: #53636a; font-size: 1rem; line-height: 1.55; }
.course-lessons { margin: 1.5rem 0 0; padding: 0; list-style: none; border-top: 1px solid #d9ddda; }
.course-lessons li { border-bottom: 1px solid #d9ddda; }
.course-lessons a { display: grid; grid-template-columns: 2.2rem minmax(0, 1fr); gap: .7rem; align-items: start; padding: .95rem .25rem; color: #142d39; text-decoration: none; font-weight: 600; line-height: 1.4; }
.course-lessons a:hover, .course-lessons a:focus-visible { color: #a17131; }
.course-lessons a[aria-current="page"] { background: #102b39; color: #fff; padding-left: .55rem; }
.course-lesson-number { color: #a17131; font-size: .85rem; font-weight: 750; }
.course-lessons a[aria-current="page"] .course-lesson-number { color: #d8a55e; }
.course-overview-aside { border-top: 3px solid #b17b37; padding: 1.2rem 0; }
.course-overview-aside h2 { margin: 0 0 .5rem; font-size: 1.2rem; }
.course-overview-aside h2:not(:first-child) { margin-top: 1.8rem; }
.course-overview-aside p { margin: 0; color: #53636a; font-size: 1rem; line-height: 1.6; }
.course-overview-aside a { display: inline-block; margin-top: 1.8rem; color: #a17131; font-weight: 700; }
.course-lesson-page { padding: 2.25rem 0 5rem; }
.course-breadcrumb { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 2.4rem; font-size: .95rem; }
.course-breadcrumb span { color: #879095; }
.course-lesson-header { max-width: 850px; margin-bottom: 2.5rem; }
.course-lesson-header h1 { font-size: clamp(2.2rem, 4.1vw, 3.5rem); }
.course-reading-grid { display: grid; grid-template-columns: minmax(0, 720px) minmax(245px, 1fr); gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.course-reading-main { min-width: 0; }
.course-prose { font-size: 1.05rem; line-height: 1.75; overflow-wrap: anywhere; }
.course-prose h2, .course-prose h3 { color: #102b39; line-height: 1.25; letter-spacing: -.02em; }
.course-prose h2 { margin: 2.6rem 0 1rem; font-size: 1.75rem; }
.course-prose h3 { margin: 2rem 0 .85rem; font-size: 1.3rem; }
.course-prose p, .course-prose ul, .course-prose ol, .course-prose blockquote, .course-prose table { margin: 0 0 1.4rem; }
.course-prose li { margin: .35rem 0; }
.course-prose a { color: #986628; text-underline-offset: .16em; }
.course-prose blockquote { border-left: 3px solid #b7894f; background: #f6f5f1; padding: 1rem 1.35rem; color: #273f49; }
.course-prose blockquote p:last-child, .course-prose blockquote ul:last-child { margin-bottom: 0; }
.course-callout { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 1rem; align-items: start; margin: 0 0 1.4rem; padding: 1.15rem 1.3rem; border-left: 3px solid #b7894f; background: #f6f5f1; color: #273f49; }
.course-callout-icon { display: grid; width: 32px; height: 32px; place-items: center; }
.course-callout-icon img { display: block; width: 28px; height: 28px; object-fit: contain; }
.course-callout-number { display: grid; width: 29px; height: 29px; place-items: center; border: 1.8px solid #102936; border-radius: 50%; color: #102936; font-size: .9rem; font-weight: 750; line-height: 1; }
.course-callout-body > :last-child { margin-bottom: 0; }
.course-callout--accent { grid-template-columns: 24px minmax(0, 1fr); gap: .85rem; padding: .15rem 0 .15rem 1.1rem; border-left: 2px solid #d8c29d; background: transparent; color: #24404c; }
.course-callout--accent .course-callout-icon { width: 24px; height: 24px; margin-top: .2rem; opacity: .8; }
.course-callout--accent .course-callout-icon img { width: 22px; height: 22px; }
.course-prose table { width: 100%; border-collapse: collapse; display: block; overflow-x: auto; font-size: .95rem; }
.course-prose th, .course-prose td { min-width: 120px; padding: .7rem .8rem; border: 1px solid #d9ddda; text-align: left; vertical-align: top; }
.course-prose th { background: #f3f5f4; }
.course-reading-aside { position: sticky; top: 1.5rem; max-height: calc(100vh - 3rem); overflow: auto; border-top: 3px solid #b17b37; background: #f8f8f6; padding: 1.4rem 1.3rem; }
.course-reading-aside h2 { margin: .4rem 0 1.1rem; font-size: 1.25rem; line-height: 1.3; }
.course-reading-aside .course-lessons { margin-top: .8rem; }
.course-reading-aside .course-lessons a { font-size: .9rem; padding-top: .75rem; padding-bottom: .75rem; }
.course-sidebar-back { display: inline-block; margin-top: 1.3rem; color: #a17131; font-weight: 700; }
.course-sequence { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 3.5rem; border-top: 1px solid #d9ddda; padding-top: 1.2rem; }
.course-sequence a { display: flex; flex-direction: column; gap: .3rem; color: #102b39; text-decoration: none; }
.course-sequence a:last-child { text-align: right; }
.course-sequence span { color: #a17131; font-size: .9rem; font-weight: 700; }
.course-sequence strong { font-size: 1rem; line-height: 1.4; }
.course-return { display: inline-block; margin-top: 2.2rem; }
.course-lesson-lead { max-width: 760px; margin: 0 0 1.1rem; color: #34474f; font-size: clamp(1.1rem, 1.6vw, 1.3rem); line-height: 1.55; }
.course-lesson-facts { display: flex; flex-wrap: wrap; gap: .35rem 1rem; margin: 0; color: #5a6a70; font-size: .92rem; }
.course-lesson-facts span + span::before { content: '·'; margin-right: 1rem; color: #b7894f; }
.course-goals { margin: 0 0 2.2rem; padding: 1.35rem 1.5rem 1.2rem; border: 1px solid #e2ddd2; border-top: 3px solid #b17b37; background: #faf8f3; }
.course-goals h2 { margin: 0 0 .7rem; color: #102b39; font-size: 1.15rem; letter-spacing: -.01em; }
.course-goals ul { margin: 0 0 .9rem; padding: 0; list-style: none; }
.course-goals li { position: relative; margin: .45rem 0; padding-left: 1.6rem; line-height: 1.55; }
.course-goals li::before { content: ''; position: absolute; left: .15rem; top: .5em; width: .55rem; height: .3rem; border-left: 2px solid #a17131; border-bottom: 2px solid #a17131; transform: rotate(-45deg); }
.course-goals p { margin: 0 0 .5rem; line-height: 1.55; }
.course-goals-row { padding-top: .6rem; border-top: 1px solid #e6e1d6; color: #4c5b61; font-size: .95rem; }
.course-goals-row strong { display: block; margin-bottom: .15rem; color: #102b39; font-size: .8rem; letter-spacing: .06em; text-transform: uppercase; }
.course-toc { margin: 0 0 2.4rem; padding: .2rem 0 .2rem 1.2rem; border-left: 3px solid #d9ddda; }
.course-toc p { margin: 0 0 .5rem; color: #aa762e; font-size: .8rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; }
.course-toc ul { margin: 0; padding: 0; list-style: none; font-size: .97rem; }
.course-toc li { margin: .3rem 0; line-height: 1.45; }
.course-toc a { color: #102b39; text-decoration: none; }
.course-toc a:hover, .course-toc a:focus-visible { color: #a17131; text-decoration: underline; }
.course-prose h2[id] { scroll-margin-top: 6rem; }
.course-route-compact { display: none; }
@media (max-width: 820px) {
  .course-overview-grid, .course-reading-grid { grid-template-columns: 1fr; }
  .course-reading-aside { display: none; }
  .course-toc { display: none; }
  .course-overview-aside { max-width: 550px; }
  .course-route-compact { display: block; margin: 0 0 2rem; border: 1px solid #d9ddda; border-top: 3px solid #b17b37; background: #f8f8f6; }
  .course-route-compact summary { display: flex; flex-direction: column; gap: .15rem; padding: .85rem 2.6rem .85rem 1rem; cursor: pointer; list-style: none; position: relative; }
  .course-route-compact summary::-webkit-details-marker { display: none; }
  .course-route-compact summary::after { content: ''; position: absolute; right: 1.1rem; top: 50%; width: .5rem; height: .5rem; border-right: 2px solid #a17131; border-bottom: 2px solid #a17131; transform: translateY(-70%) rotate(45deg); transition: transform .15s ease; }
  .course-route-compact[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
  .course-route-compact summary span { color: #aa762e; font-size: .78rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; }
  .course-route-compact summary strong { color: #102b39; font-size: 1rem; }
  .course-route-compact .course-lessons { margin: 0 1rem; }
  .course-route-compact .course-lessons a { font-size: .92rem; padding: .7rem .25rem; }
  .course-route-compact .course-sidebar-back { margin: 1rem 1rem 1.1rem; }
}
@media (max-width: 620px) {
  .course-grid { grid-template-columns: 1fr; }
  .course-section-head { display: block; }
  .course-section-head p { margin-top: .4rem; }
  .course-reading-aside .course-lessons { grid-template-columns: 1fr; }
  .course-sequence { gap: .6rem; }
  .course-card { min-height: 0; }
  .course-lesson-header { margin-bottom: 1.8rem; }
  .course-goals { padding: 1.1rem 1.05rem 1rem; }
  .course-callout { display: flow-root; padding: 1rem 1.05rem; }
  .course-callout--accent { padding: .1rem 0 .1rem .9rem; }
  .course-callout-icon { float: left; width: 24px; height: 24px; margin: .2rem .65rem .25rem 0; }
  .course-callout-icon img { width: 22px; height: 22px; }
  .course-callout-number { width: 24px; height: 24px; font-size: .8rem; }
  .course-prose { font-size: 1rem; line-height: 1.7; }
}