/* FRST 110 water-journey styles, lifted from the retired Next.js app.
   The design tokens below came from that app's :root / .theme-frst blocks;
   they are scoped to .course-feature so they cannot leak into the kit. */

.course-feature {
  --bg: oklch(1 0 0);
  --course: oklch(0.48 0.15 260);
  --course-ink: oklch(0.29 0.09 260);
  --course-soft: oklch(0.94 0.035 260);
  --faint: oklch(0.62 0.018 28);
  --font-data: -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI", "Helvetica Neue", "Apple SD Gothic Neo", "Noto Sans KR", "Noto Sans", Arial, sans-serif;
  --ink: oklch(0.2 0.025 28);
  --line: oklch(0.88 0.008 28);
  --line-strong: oklch(0.76 0.012 28);
  --muted: oklch(0.46 0.025 28);
  --surface: oklch(0.975 0.003 28);
  --surface-strong: oklch(0.946 0.006 28);
  --water-blue: oklch(0.5 0.14 244);
  --water-ice: oklch(0.955 0.026 227);
  --water-night: oklch(0.22 0.055 248);
  --water-paper: oklch(0.955 0.035 78);
  --water-rust: oklch(0.52 0.17 32);

  /* page container the retired app's <main> used to provide */
  display: block;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  color: var(--ink);
}

.source-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  color: var(--course-ink);
  font-size: 0.76rem;
  font-weight: 650;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.water-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(480px, 1.18fr);
  gap: 34px;
  align-items: stretch;
  padding: 24px 0 22px;
  border-top: 5px solid var(--course);
  border-bottom: 1px solid var(--line);
}

.water-hero-copy {
  align-self: center;
  padding: 14px 0;
}

.frst-theme-label {
  margin-top: 10px;
  margin-bottom: 0;
  color: var(--course-ink);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.frst-context {
  margin-top: 8px;
  margin-bottom: 8px;
  color: var(--course-ink);
  font-size: 0.76rem;
  font-weight: 680;
}

.water-hero h1 {
  max-width: 650px;
  margin-bottom: 13px;
  color: var(--course-ink);
  font-size: clamp(2.6rem, 5.2vw, 4.35rem);
  font-weight: 670;
  letter-spacing: -0.04em;
  line-height: 0.91;
}

.water-hero-lede {
  max-width: 56ch;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.55;
}

.water-hero-questions {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 16px;
  padding-top: 13px;
  border-top: 1px solid var(--line-strong);
  color: var(--water-rust);
  font-size: 0.72rem;
  font-weight: 680;
}

.water-hero-art figcaption,
.yu-art figcaption,
.water-map-figure figcaption,
.water-wonder figcaption,
.sea-of-islands figcaption {
  color: var(--faint);
  font-size: 0.61rem;
  line-height: 1.4;
}

.water-hero-art a,
.yu-art a,
.water-map-figure a,
.sea-of-islands figcaption a,
.water-wonder a,
.baikal-feature a,
.sea-of-islands > div > a,
.water-contrast a,
.dujiangyan-note a {
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.water-flow-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  gap: 24px;
  min-height: 46px;
  align-items: center;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  scrollbar-width: none;
}

.water-flow-nav::-webkit-scrollbar {
  display: none;
}

.water-flow-nav a {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 0.71rem;
  font-weight: 650;
  text-decoration: none;
  transition: color 180ms ease-out;
}

.water-flow-nav a:hover {
  color: var(--course-ink);
}

.water-knowing,
.world-waters,
.strange-water,
.frst-assigned {
  padding: 46px 0;
  border-bottom: 1px solid var(--line);
}

.frst-section-heading {
  display: grid;
  grid-template-columns: minmax(300px, 0.85fr) 175px minmax(320px, 1fr);
  gap: 28px;
  align-items: start;
  margin-bottom: 26px;
}

.frst-section-heading .frst-context {
  margin-bottom: 0;
  color: var(--water-rust);
  font-size: 0.73rem;
  font-weight: 700;
}

.frst-section-heading h2,
.yu-copy h2,
.sea-of-islands h2,
.water-material h2,
.frst-works-heading h2,
.frst-arrival-note h2,
.frst-reading-guide h2 {
  margin-bottom: 0;
  font-size: clamp(1.65rem, 3vw, 2.5rem);
  font-weight: 670;
  letter-spacing: -0.035em;
  line-height: 1.02;
}

.frst-section-heading > p:last-child {
  max-width: 58ch;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.water-contrast {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.water-contrast article {
  padding: 24px 28px 24px 0;
}

.water-contrast article + article {
  padding-right: 0;
  padding-left: 28px;
  border-left: 1px solid var(--line);
}

.water-concept {
  display: block;
  margin-top: 6px;
  margin-bottom: 14px;
  color: var(--line-strong);
  font-size: 0.72rem;
  font-weight: 720;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.water-contrast-water .water-concept {
  color: var(--water-blue);
}

.water-contrast h3 {
  margin-bottom: 8px;
  font-size: 1.1rem;
  font-weight: 680;
}

.water-contrast p {
  max-width: 58ch;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.58;
}

.water-contrast a {
  color: var(--course-ink);
  font-size: 0.73rem;
  font-weight: 680;
}

.yin-maxxer {
  margin: 18px 0 0 auto;
  max-width: 750px;
  padding: 14px 18px;
  border-top: 3px solid var(--water-blue);
  background: var(--water-ice);
  color: var(--water-night);
  font-size: 0.88rem;
  line-height: 1.55;
}

.yu-story {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  gap: 44px;
  margin: 48px 0;
  padding: 34px;
  background: var(--water-paper);
}

.yu-art {
  margin: 0;
}

.yu-art img {
  display: block;
  width: 100%;
  height: 620px;
  object-fit: cover;
  object-position: 50% 46%;
}

.yu-art figcaption {
  margin-top: 7px;
  color: oklch(0.46 0.03 66);
}

.yu-copy {
  align-self: center;
}

.yu-copy h2 {
  max-width: 690px;
  margin-bottom: 16px;
}

.yu-copy > p {
  max-width: 69ch;
  color: oklch(0.4 0.025 55);
  font-size: 0.87rem;
  line-height: 1.62;
}

.yu-copy .yu-lede {
  color: var(--ink);
  font-size: 0.97rem;
}

.yu-sequence {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 22px 0;
  padding: 12px 0;
  border-top: 1px solid oklch(0.75 0.035 65);
  border-bottom: 1px solid oklch(0.75 0.035 65);
  color: oklch(0.38 0.04 52);
  font-size: 0.72rem;
}

.yu-sequence span {
  white-space: nowrap;
}

.yu-sequence i {
  color: oklch(0.58 0.04 63);
  font-style: normal;
}

.dujiangyan-note {
  margin-top: 20px;
  padding: 17px 18px;
  border: 1px solid oklch(0.78 0.035 68);
  background: oklch(0.985 0.018 78);
}

.dujiangyan-note > span {
  display: block;
  margin-bottom: 5px;
  color: var(--water-rust);
  font-size: 0.65rem;
  font-weight: 720;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.dujiangyan-note h3 {
  margin-bottom: 7px;
  font-size: 1rem;
}

.dujiangyan-note p {
  margin-bottom: 10px;
  color: oklch(0.42 0.025 55);
  font-size: 0.78rem;
  line-height: 1.55;
}

.dujiangyan-note div {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 16px;
}

.dujiangyan-note a {
  color: var(--course-ink);
  font-size: 0.69rem;
  font-weight: 680;
}

.yu-copy .water-labor-question {
  margin: 18px 0 0;
  padding-top: 15px;
  border-top: 2px solid var(--water-rust);
  color: var(--water-rust);
  font-weight: 680;
}

.map-heading {
  margin-bottom: 22px;
}

.water-map-figure {
  margin: 0;
}

.water-map {
  position: relative;
  padding: 18px;
  background: var(--water-night);
}

.water-map > img {
  display: block;
  width: 100%;
  height: auto;
  opacity: 0.86;
}

.water-map-markers {
  position: absolute;
  inset: 18px;
}

.water-map-marker {
  position: absolute;
  width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  border: 2px solid var(--bg);
  border-radius: 50%;
  background: var(--water-rust);
  color: var(--bg);
  font-size: 0.61rem;
  font-weight: 760;
  text-decoration: none;
  transform: translate(-50%, -50%);
  transition: background 180ms ease-out, transform 180ms ease-out;
}

.water-map-marker:hover,
.water-map-marker:focus-visible {
  background: oklch(0.67 0.19 42);
  transform: translate(-50%, -50%) scale(1.12);
}

.water-map-figure figcaption {
  padding: 8px 10px 0;
}

.water-map-legend {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0 28px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.water-map-legend li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 60px;
}

.water-map-legend li > span {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--water-rust);
  color: var(--bg);
  font-size: 0.59rem;
  font-weight: 740;
}

.water-map-legend h3 {
  margin-bottom: 2px;
  font-size: 0.85rem;
  font-weight: 690;
}

.water-map-legend b {
  display: block;
  margin-bottom: 5px;
  color: var(--course-ink);
  font-size: 0.63rem;
  font-weight: 660;
}

.water-map-legend p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.45;
}

.baikal-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  min-height: 390px;
  background: var(--water-ice);
}

.baikal-feature figure {
  margin: 0;
  overflow: hidden;
}

.baikal-feature img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.baikal-feature > div {
  align-self: center;
  padding: 30px;
}

.baikal-feature > div > span,
.water-wonder > div > span {
  display: block;
  margin-bottom: 16px;
  color: var(--water-blue);
  font-size: 0.65rem;
  font-weight: 760;
  letter-spacing: 0.08em;
}

.baikal-feature h3,
.water-wonder h3 {
  margin-bottom: 10px;
  font-size: 1.45rem;
  font-weight: 680;
  letter-spacing: -0.028em;
}

.baikal-feature p,
.water-wonder p {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.58;
}

.feature-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.baikal-feature a,
.water-wonder a {
  color: var(--course-ink);
  font-size: 0.69rem;
  font-weight: 680;
}

.strange-water-pair {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 24px;
  margin-top: 24px;
}

.water-wonder {
  border: 1px solid var(--line);
  background: var(--bg);
}

.water-wonder figure {
  margin: 0;
  background: var(--water-night);
}

.water-wonder img {
  display: block;
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.water-wonder figcaption {
  padding: 6px 10px;
  color: oklch(0.78 0.025 235);
}

.water-wonder > div {
  padding: 22px 24px 24px;
}

.nested-islands {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 5px 7px;
  margin: 14px 0 15px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.nested-islands b {
  color: var(--water-rust);
  font-size: 1rem;
}

.nested-islands i {
  color: var(--faint);
  font-size: 0.67rem;
  font-style: normal;
}

.sea-of-islands {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(340px, 0.82fr);
  margin: 48px 0;
  background: var(--water-night);
  color: var(--bg);
}

.sea-of-islands figure {
  position: relative;
  min-height: 460px;
  margin: 0;
  overflow: hidden;
}

.sea-of-islands figure img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 460px;
  object-fit: cover;
}

.sea-of-islands figcaption {
  position: absolute;
  left: 10px;
  bottom: 8px;
  padding: 4px 6px;
  background: oklch(0.17 0.045 248 / 0.88);
  color: oklch(0.85 0.025 230);
}

.sea-of-islands > div {
  align-self: center;
  padding: 34px;
}

.sea-of-islands .frst-context {
  color: oklch(0.75 0.08 220);
}

.sea-of-islands h2 {
  margin-bottom: 16px;
  color: var(--bg);
}

.sea-of-islands p {
  color: oklch(0.82 0.025 230);
  font-size: 0.86rem;
  line-height: 1.62;
}

.sea-of-islands .ocean-lede {
  color: var(--bg);
  font-size: 0.96rem;
}

.sea-of-islands blockquote {
  margin: 21px 0;
  padding: 14px 0;
  border-top: 1px solid oklch(0.48 0.06 235);
  border-bottom: 1px solid oklch(0.48 0.06 235);
  color: oklch(0.92 0.035 218);
  font-size: 1rem;
  font-weight: 620;
  line-height: 1.45;
}

.sea-of-islands > div > a {
  color: oklch(0.78 0.09 220);
  font-size: 0.74rem;
  font-weight: 690;
}

.water-material {
  display: grid;
  grid-template-columns: minmax(300px, 0.8fr) minmax(0, 1.2fr);
  gap: 52px;
  padding: 34px 0 44px;
  border-top: 4px solid var(--water-rust);
  border-bottom: 1px solid var(--line);
}

.water-material h2 {
  margin-bottom: 12px;
}

.water-material > div > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.58;
}

.water-material ul {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-strong);
}

.water-material li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.84rem;
  font-weight: 610;
}

.water-material li span {
  color: var(--water-rust);
  font-size: 0.66rem;
  font-weight: 740;
}

.frst-works-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 18px;
}

.frst-works-heading h2 {
  margin-bottom: 8px;
}

.frst-works-heading > div > p:last-child,
.frst-arrival-note > p:last-child {
  max-width: 70ch;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.frst-reading-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 32px;
  border-top: 1px solid var(--line-strong);
}

.frst-reading {
  display: grid;
  grid-template-columns: 116px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  min-height: 246px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.frst-reading-index {
  display: flex;
  align-items: baseline;
  gap: 9px;
  margin-bottom: 7px;
}

.frst-reading-index span {
  color: var(--line-strong);
  font-size: 1.08rem;
  font-weight: 690;
  letter-spacing: -0.04em;
  line-height: 1;
}

.frst-reading-index strong {
  color: var(--course-ink);
  font-size: 0.62rem;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.frst-reading-visual {
  width: 116px;
  margin: 0;
}

.frst-reading-image {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 3;
  background: var(--surface-strong);
  box-shadow: 0 2px 6px oklch(0.2 0.025 28 / 0.18);
  object-fit: cover;
}

.frst-reading-visual figcaption {
  margin-top: 6px;
  color: var(--faint);
  font-size: 0.56rem;
  line-height: 1.35;
}

.frst-reading-visual a {
  text-decoration-color: var(--line-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.frst-reading-copy {
  align-self: center;
}

.frst-reading-copy h3 {
  margin-bottom: 3px;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 670;
  letter-spacing: -0.015em;
}

.frst-creator {
  margin-bottom: 8px;
  color: var(--course-ink);
  font-size: 0.73rem;
  font-weight: 630;
}

.frst-invitation {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.5;
}

.frst-isbn {
  display: block;
  margin-top: 9px;
  color: var(--faint);
  font-family: var(--font-data);
  font-size: 0.64rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.frst-end-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.05fr) minmax(260px, 0.75fr);
  gap: 28px;
  padding: 40px 0 48px;
}

.frst-reading-guide,
.frst-arrival-note {
  padding: 20px;
}

.frst-reading-guide {
  border: 1px solid var(--line);
  background: var(--surface);
}

.frst-reading-guide h2,
.frst-arrival-note h2 {
  margin-bottom: 14px;
  font-size: 1.18rem;
  line-height: 1.14;
}

.frst-reading-guide ol {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: guide;
}

.frst-reading-guide li {
  position: relative;
  counter-increment: guide;
  padding: 9px 0 9px 28px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.45;
}

.frst-reading-guide li::before {
  position: absolute;
  left: 0;
  color: var(--course-ink);
  content: counter(guide, decimal-leading-zero);
  font-size: 0.62rem;
  font-weight: 700;
}

.frst-reading-guide li span {
  color: var(--ink);
  font-weight: 650;
}

.frst-arrival-note {
  border-top: 3px solid var(--course);
  background: var(--course-soft);
}

.frst-arrival-note h2 {
  color: var(--course-ink);
}

@media (max-width: 1050px) {
  .frst-people-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .water-hero {
    grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  }

  .frst-section-heading {
    grid-template-columns: minmax(0, 1fr) 140px;
  }

  .frst-section-heading > p:last-child {
    grid-column: 1 / -1;
  }

  .water-map-legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .frst-end-grid {
    grid-template-columns: 1fr 1fr;
  }

  .frst-facts {
    grid-column: 1 / -1;
  }

  .frst-facts dl {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .frst-facts dl > div {
    padding-right: 12px;
  }
}

@media (max-width: 900px) {
  .portal-intro,
  .course-content {
    grid-template-columns: 1fr;
  }

  .portal-intro {
    gap: 24px;
  }

  .course-index-row {
    grid-template-columns: 10px 1fr 28px;
    padding: 18px 0;
  }

  .course-index-meeting {
    grid-column: 2;
  }

  .course-arrow {
    grid-column: 3;
    grid-row: 1 / span 2;
  }

  .finals-list {
    grid-template-columns: 1fr;
  }

  .finals-list a + a {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .course-content {
    gap: 40px;
  }

  .water-hero {
    grid-template-columns: minmax(0, 0.85fr) minmax(390px, 1.15fr);
    gap: 24px;
  }

  .yu-story {
    grid-template-columns: minmax(240px, 0.65fr) minmax(0, 1.35fr);
    gap: 30px;
    padding: 28px;
  }

  .yu-art img {
    height: 680px;
  }

  .strange-water-pair {
    grid-template-columns: 1fr 1fr;
  }

  .sea-of-islands {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  }

  .frst-reading-list {
    grid-template-columns: 1fr;
  }

  .frst-reading {
    min-height: 0;
  }
}

@media (max-width: 720px) {
  .frst-people-intro {
    display: block;
    padding: 22px 0 18px;
  }

  .frst-people-intro h1 {
    font-size: 2.65rem;
  }

  .frst-people-count {
    margin-top: 12px;
  }

  .frst-people-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .frst-person {
    padding: 8px;
  }

  .frst-person figcaption {
    padding-top: 8px;
    font-size: 0.92rem;
  }

  .frst-people-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }

  .portal-page,
  .course-page {
    padding: 0 16px;
  }

  .portal-header {
    min-height: 64px;
  }

  .term-lockup span,
  .wordmark small {
    display: none;
  }

  .portal-intro {
    padding: 22px 0 20px;
  }

  .portal-intro h1 {
    font-size: 1.9rem;
  }

  .portal-intro > p {
    font-size: 0.9rem;
  }

  .section-heading-row {
    align-items: flex-start;
  }

  .schedule-range {
    display: none;
  }

  .week-schedule-desktop {
    display: none;
  }

  .week-schedule-mobile {
    display: block;
    border-top: 1px solid var(--line-strong);
  }

  .mobile-day {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .mobile-day h3 {
    margin: 12px 0 0;
    color: var(--muted);
    font-size: 0.77rem;
  }

  .mobile-day-classes {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .mobile-day-classes > p {
    margin: 12px 0;
    color: var(--faint);
    font-size: 0.75rem;
  }

  .mobile-class {
    min-height: 68px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 4px 16px;
    align-items: center;
    padding: 12px 14px;
    border-radius: 10px;
    text-decoration: none;
  }

  .mobile-class-time {
    grid-column: 1 / -1;
    font-size: 0.68rem;
  }

  .mobile-class strong {
    font-size: 0.84rem;
  }

  .mobile-class span:last-child {
    font-size: 0.7rem;
  }

  .schedule-section,
  .courses-section,
  .finals-section {
    margin-bottom: 36px;
  }

  .course-index-row {
    grid-template-columns: 8px 1fr 24px;
    gap: 14px;
  }

  .course-color {
    width: 8px;
  }

  .course-index-name span {
    font-size: 0.94rem;
  }

  .course-banner {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 18px 0 20px;
  }

  .course-banner h1 {
    font-size: 1.72rem;
  }

  .course-meeting-lockup {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    padding-top: 14px;
    border-top: 1px solid var(--line);
  }

  .course-meeting-lockup span:last-child {
    grid-column: 1 / -1;
  }

  .course-content {
    padding-top: 28px;
  }

  .water-hero {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 18px 0;
  }

  .water-hero-copy {
    padding: 4px 0 0;
  }

  .water-hero h1 {
    font-size: 2.85rem;
  }

  .water-hero-lede {
    font-size: 0.9rem;
  }

  .water-hero-art,
  .water-hero-art img {
    min-height: 240px;
    height: 240px;
  }

  .water-flow-nav {
    margin: 0 -16px;
    padding: 0 16px;
  }

  .frst-meeting-bar {
    grid-template-columns: 1fr;
    background: var(--bg);
  }

  .frst-meeting-bar > div,
  .frst-meeting-bar > div:first-child {
    display: grid;
    grid-template-columns: 90px minmax(0, 1fr);
    gap: 12px;
    padding: 10px 0;
  }

  .frst-meeting-bar > div + div {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .frst-meeting-bar strong {
    white-space: normal;
  }

  .water-knowing,
  .world-waters,
  .strange-water,
  .frst-assigned {
    padding: 36px 0;
  }

  .frst-section-heading {
    grid-template-columns: 1fr;
    gap: 8px;
    margin-bottom: 20px;
  }

  .frst-section-heading > p:last-child {
    grid-column: auto;
  }

  .frst-section-heading h2,
  .yu-copy h2,
  .sea-of-islands h2,
  .water-material h2,
  .frst-works-heading h2 {
    font-size: 1.8rem;
  }

  .water-contrast {
    grid-template-columns: 1fr;
  }

  .water-contrast article,
  .water-contrast article + article {
    padding: 20px 0;
  }

  .water-contrast article + article {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .water-concept {
    margin-bottom: 18px;
  }

  .yin-maxxer {
    padding: 13px 15px;
  }

  .yu-story {
    grid-template-columns: 1fr;
    gap: 24px;
    margin: 36px 0;
    padding: 20px;
  }

  .yu-art img {
    height: 430px;
    object-position: 50% 47%;
  }

  .yu-sequence {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .yu-sequence i {
    padding-left: 8px;
    transform: rotate(90deg);
  }

  .water-map {
    padding: 8px;
  }

  .water-map-markers {
    display: none;
  }

  .water-map-legend {
    grid-template-columns: 1fr;
    margin-top: 16px;
  }

  .baikal-feature,
  .strange-water-pair {
    grid-template-columns: 1fr;
  }

  .baikal-feature figure {
    height: 260px;
  }

  .baikal-feature > div,
  .water-wonder > div {
    padding: 20px;
  }

  .water-wonder img {
    height: 230px;
  }

  .sea-of-islands {
    grid-template-columns: 1fr;
    margin: 36px 0;
  }

  .sea-of-islands figure,
  .sea-of-islands figure img {
    min-height: 270px;
    height: 270px;
  }

  .sea-of-islands > div {
    padding: 24px 20px 28px;
  }

  .water-material {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 28px 0 36px;
  }

  .frst-works-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .frst-reading {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 14px;
    padding: 16px 0;
  }

  .frst-reading-visual {
    width: 92px;
  }

  .frst-reading-index {
    gap: 7px;
    margin-bottom: 6px;
  }

  .frst-reading-index span {
    font-size: 1rem;
  }

  .frst-reading-copy h3 {
    font-size: 0.96rem;
  }

  .frst-invitation {
    font-size: 0.75rem;
  }

  .frst-end-grid {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 32px 0 40px;
  }

  .frst-facts {
    grid-column: auto;
  }

  .frst-facts dl {
    display: block;
  }

  .frst-arrival-note {
    padding: 18px;
  }

  .workspace-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    padding: 14px 0;
  }

  .works-heading-row {
    flex-direction: column;
    gap: 12px;
  }

  .work-row {
    grid-template-columns: 1fr;
    gap: 7px;
    padding: 14px 0;
  }

  .work-row > span {
    white-space: normal;
  }

  .final-callout {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 20px 0;
  }
}