:root {
  --green: #339966;
  --green-deep: #123f2a;
  --green-wash: #eaf5ef;
  --ink: #151815;
  --muted: #646b66;
  --paper: #f8f8f4;
  --panel: #ffffff;
  --line: #d7dbd6;
  --grey: #e5e6e4;
  --serif: Georgia, 'Times New Roman', Times, serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 14px;
  background: #fff;
  border: 2px solid var(--ink);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.overview-bar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: max(7px, env(safe-area-inset-top)) max(20px, calc((100% - 1180px) / 2));
  background: rgba(248, 248, 244, .96);
  border-bottom: 1px solid var(--ink);
  backdrop-filter: blur(12px);
}
.overview-bar a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  gap: 7px;
  font-size: .76rem;
  font-weight: 720;
  text-decoration: none;
}
.overview-bar a:first-child { font-family: var(--serif); font-size: .96rem; }
.overview-bar a:last-child span { color: var(--green-deep); font-size: 1rem; }

.masthead {
  overflow: hidden;
  background: var(--green);
  border-bottom: 1px solid var(--green-deep);
  scroll-margin-top: 52px;
}
.masthead__inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(34px, 7vw, 88px) 0 clamp(38px, 7vw, 76px);
}
.eyebrow {
  margin: 0 0 24px;
  font-size: 0.72rem;
  font-weight: 760;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.masthead__title-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid rgba(0,0,0,.38);
  padding-top: clamp(18px, 3vw, 30px);
}
.masthead h1 {
  max-width: 830px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.2rem, 9vw, 7.7rem);
  font-weight: 500;
  letter-spacing: -0.065em;
  line-height: 0.86;
}
.year-mark {
  display: grid;
  flex: 0 0 auto;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1rem, 2vw, 1.35rem);
  line-height: 1;
  text-align: center;
}
.masthead__intro {
  max-width: 650px;
  margin: clamp(28px, 5vw, 56px) 0 0 auto;
  font-family: var(--serif);
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  line-height: 1.35;
}
.overview-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 36px 0 96px;
}
.section-nav {
  display: grid;
  grid-template-columns: minmax(140px, 1fr) 3fr;
  gap: 30px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--ink);
}
.section-nav > p { margin: 0; font-weight: 750; }
.section-nav > div { display: flex; flex-wrap: wrap; gap: 8px; }
.quick-link-row { display: contents; }
.section-nav a {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  padding: 6px 9px;
  border: 1px solid var(--line);
  background: var(--panel);
  font-size: 0.72rem;
  line-height: 1.15;
  text-decoration: none;
  white-space: nowrap;
}
.section-nav a:hover { border-color: var(--green-deep); background: var(--green-wash); }

.overview-heading { max-width: 760px; padding: clamp(56px, 9vw, 104px) 0 44px; }
.eyebrow--dark { margin-bottom: 15px; color: var(--green-deep); }
.overview-heading h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.5rem, 5vw, 4.6rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1;
}
.overview-heading > p:last-child { max-width: 620px; margin: 22px 0 0; color: var(--muted); }

.section-grid { display: grid; gap: 34px; }
.course-section {
  scroll-margin-top: 20px;
  display: grid;
  grid-template-columns: minmax(250px, .78fr) 2fr;
  background: var(--panel);
  border: 1px solid var(--line);
}
.course-section__header {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 10px;
  align-content: start;
  padding: 25px;
  background: var(--grey);
  border-right: 1px solid var(--line);
}
.course-section__header > span {
  color: var(--green-deep);
  font-family: var(--serif);
  font-variant-numeric: tabular-nums;
}
.course-section__header p {
  margin: 1px 0 8px;
  color: var(--muted);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .07em;
  line-height: 1.35;
  text-transform: uppercase;
}
.course-section__header h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.2vw, 2rem);
  font-weight: 500;
  line-height: 1.08;
}
.course-list { margin: 0; padding: 0; list-style: none; }
.course-row { border-bottom: 1px solid var(--line); }
.course-row:last-child { border-bottom: 0; }
.course-row__link,
.course-row--multiple,
.course-row--unavailable {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto 24px;
  gap: 16px;
  min-height: 64px;
  align-items: center;
  padding: 13px 18px;
  text-decoration: none;
}
.course-row__link:hover { background: var(--green-wash); }
.course-row__title {
  font-family: var(--serif);
  font-size: .98rem;
  font-weight: 600;
  line-height: 1.3;
}
.course-row__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 5px;
  color: var(--muted);
  font-size: .72rem;
  white-space: nowrap;
}
.course-row__arrow { color: var(--green-deep); font-size: 1.05rem; }
.course-row--multiple { grid-template-columns: minmax(180px, 1fr) minmax(220px, auto); }
.course-row__variants { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.course-row__variants a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  background: var(--green-wash);
  border: 1px solid #bcd7c7;
  font-size: .74rem;
  font-weight: 700;
  text-decoration: none;
}
.course-row__variants a:hover { border-color: var(--green-deep); }
.variant-code { color: var(--muted); font-size: .67rem; font-weight: 550; }
.course-row--unavailable {
  grid-template-columns: minmax(0, 1fr) auto;
  color: #777c78;
  background: #fafafa;
}
.course-row__note { font-size: .72rem; }
.course-section--note { border-style: dashed; }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 26px max(20px, calc((100% - 1180px) / 2));
  background: var(--ink);
  color: white;
  font-size: .78rem;
}
.site-footer p { margin: 0; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.back-bar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  min-height: 56px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: max(10px, env(safe-area-inset-top)) max(20px, calc((100% - 1180px) / 2));
  background: rgba(248, 248, 244, .96);
  border-bottom: 1px solid var(--ink);
  backdrop-filter: blur(12px);
  font-size: .78rem;
  font-weight: 720;
  letter-spacing: .02em;
}
.back-bar a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  gap: 9px;
  text-decoration: none;
}
.back-bar a span { color: var(--green-deep); font-size: 1.25rem; }
.back-bar > span { color: var(--muted); font-variant-numeric: tabular-nums; }

.course-detail {
  width: min(980px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(42px, 7vw, 88px) 0 90px;
}
.course-hero { margin-bottom: 30px; }
.course-hero__band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: start;
  padding: clamp(22px, 4vw, 38px);
  background: var(--grey);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.course-hero__band h1 {
  max-width: 820px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2rem, 5.7vw, 4.85rem);
  font-weight: 500;
  letter-spacing: -.045em;
  line-height: .98;
}
.course-hero__band > p {
  margin: 6px 0 0;
  color: var(--green-deep);
  font-family: var(--serif);
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 700;
  white-space: nowrap;
}
.course-notes {
  padding: 12px clamp(22px, 4vw, 38px);
  background: var(--green-wash);
  border-bottom: 1px solid #bad4c4;
  color: var(--green-deep);
  font-size: .84rem;
}
.course-notes p { margin: 0; }
.course-identity {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin-top: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.course-identity > div { padding: 18px 22px; background: var(--panel); }
.course-identity span,
.fact-grid dt {
  display: block;
  margin-bottom: 5px;
  color: var(--muted);
  font-size: .66rem;
  font-weight: 760;
  letter-spacing: .075em;
  text-transform: uppercase;
}
.course-identity p { margin: 0; font-family: var(--serif); font-size: 1.07rem; }

.fact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 clamp(52px, 8vw, 86px);
  padding: 1px;
  background: var(--ink);
}
.fact-grid > div { min-height: 132px; padding: 18px; background: var(--green); }
.fact-grid dt { color: rgba(0, 0, 0, .68); }
.fact-grid dd { margin: 18px 0 0; font-family: var(--serif); font-size: 1rem; line-height: 1.3; }

.detail-section {
  display: grid;
  grid-template-columns: minmax(170px, .55fr) minmax(0, 1.45fr);
  gap: clamp(30px, 6vw, 76px);
  padding: clamp(34px, 6vw, 60px) 0;
  border-top: 1px solid var(--line);
}
.detail-section__heading { display: grid; grid-template-columns: 30px 1fr; gap: 8px; align-content: start; }
.detail-section__heading span { color: var(--green-deep); font-family: var(--serif); font-size: .88rem; }
.detail-section__heading h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 3vw, 2.25rem);
  font-weight: 500;
  letter-spacing: -.025em;
  line-height: 1.05;
}
.rich-text { max-width: 70ch; font-family: var(--serif); font-size: clamp(1.02rem, 1.5vw, 1.14rem); line-height: 1.62; }
.rich-text p { margin: 0 0 1em; }
.rich-text p:last-child { margin-bottom: 0; }
.rich-text ol,
.rich-text ul { margin: 0 0 1em; padding-left: 1.25em; }
.rich-text li { padding-left: .35em; margin-bottom: .4em; }
.rich-text a { color: var(--green-deep); text-decoration-thickness: 1px; text-underline-offset: 3px; overflow-wrap: anywhere; }
.empty-value { margin: 0; color: var(--muted); font-style: italic; }

.hours-table-wrap { min-width: 0; }
.hours-table { width: 100%; border-collapse: collapse; background: var(--panel); font-variant-numeric: tabular-nums; }
.hours-table th,
.hours-table td { padding: 14px 12px; border: 1px solid var(--line); text-align: center; }
.hours-table thead th { background: var(--grey); font-size: .75rem; }
.hours-table tbody th { width: 125px; background: #f2f3f0; font-size: .72rem; text-align: left; }
.hours-table td { font-family: var(--serif); font-size: 1.15rem; }
.hours-cards { display: none; }

.source-note {
  display: grid;
  grid-template-columns: minmax(170px, .55fr) minmax(0, 1.45fr);
  gap: clamp(30px, 6vw, 76px);
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--ink);
  color: var(--muted);
  font-size: .72rem;
}
.source-note span { color: var(--ink); font-weight: 750; text-transform: uppercase; }
.source-note p { margin: 0; }

:focus-visible { outline: 3px solid #0b5c36; outline-offset: 3px; }

@media (max-width: 800px) {
  .masthead__title-row { display: block; }
  .year-mark { display: flex; gap: 6px; margin-top: 24px; text-align: left; }
  .masthead__intro { margin-left: 0; }
  .section-nav { grid-template-columns: 1fr; gap: 15px; }
  .section-nav > .quick-links { display: grid; gap: 7px; }
  .quick-link-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; }
  .quick-link-row:first-child { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .section-nav a {
    width: 100%;
    min-height: 38px;
    justify-content: center;
    padding: 6px 7px;
    font-size: .68rem;
    text-align: center;
    white-space: normal;
  }
  .course-section { grid-template-columns: 1fr; }
  .course-section__header { border-right: 0; border-bottom: 1px solid var(--line); }
  .fact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .detail-section,
  .source-note { grid-template-columns: 1fr; gap: 25px; }
}

@media (max-width: 540px) {
  .masthead__inner,
  .overview-shell { width: min(100% - 28px, 1180px); }
  .masthead h1 { font-size: clamp(3rem, 18vw, 5rem); }
  .overview-shell { padding-top: 24px; }
  .overview-heading { padding-top: 58px; }
  .section-grid { gap: 20px; }
  .course-section__header { padding: 20px 16px; }
  .course-row__link,
  .course-row--unavailable { grid-template-columns: 1fr 20px; gap: 8px; padding: 15px 14px; }
  .course-row__meta { grid-column: 1; grid-row: 2; justify-content: flex-start; }
  .course-row__arrow { grid-column: 2; grid-row: 1 / span 2; }
  .course-row--multiple { grid-template-columns: 1fr; align-items: start; padding: 15px 14px; }
  .course-row__variants { justify-content: flex-start; }
  .course-row--unavailable .course-row__note { grid-column: 1 / -1; }
  .site-footer { display: grid; }
  .course-detail { width: min(100% - 28px, 980px); padding-top: 40px; }
  .course-hero__band { grid-template-columns: 1fr; gap: 14px; }
  .course-hero__band > p { margin-top: 0; }
  .course-identity { grid-template-columns: 1fr; }
  .fact-grid { grid-template-columns: 1fr 1fr; }
  .fact-grid > div { min-height: 114px; padding: 14px; }
  .fact-grid dd { margin-top: 12px; font-size: .9rem; }
  .hours-table-wrap { display: none; }
  .hours-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .hours-cards > div { padding: 15px; background: var(--panel); border: 1px solid var(--line); }
  .hours-cards h3 { margin: 0 0 14px; font-family: var(--serif); font-size: 1rem; }
  .hours-cards p { display: grid; grid-template-columns: auto 1fr; gap: 8px; align-items: baseline; margin: 6px 0 0; }
  .hours-cards strong { font-family: var(--serif); font-size: 1.2rem; }
  .hours-cards span { color: var(--muted); font-size: .65rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}