:root {
  --ink: #101b22;
  --ink-soft: #40515a;
  --water: #07364b;
  --water-mid: #236b80;
  --paper: #f3f0e8;
  --paper-deep: #e5dfd2;
  --white: #fff;
  --gold: #c7a66a;
  --vermilion: #a84234;
  --line: rgba(16, 27, 34, 0.17);
  --display: "Shippori Mincho", "Yu Mincho", serif;
  --body: "Zen Kaku Gothic New", "Yu Gothic UI", sans-serif;
  --content: min(1120px, calc(100% - 40px));
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 18px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--body);
  line-height: 1.9;
  letter-spacing: 0.035em;
  overflow-x: clip;
}

img {
  display: block;
  width: 100%;
}

a {
  color: inherit;
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--white);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px var(--water);
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  color: var(--white);
  background: var(--water);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  padding: 0 max(24px, 4vw);
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.24);
}

.brand {
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-decoration: none;
}

.brand small {
  display: block;
  margin-top: -0.15rem;
  font-family: var(--body);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  opacity: 0.82;
}

.site-nav {
  display: flex;
  gap: clamp(14px, 1.8vw, 26px);
  font-size: 0.78rem;
}

.site-nav a {
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  padding-bottom: 0.25rem;
  border-bottom: 1px solid currentColor;
}

.mobile-menu {
  display: none;
  position: relative;
}

.mobile-menu summary {
  min-height: 2.75rem;
  padding: 0.55rem 0.8rem;
  display: grid;
  place-items: center;
  cursor: pointer;
  list-style: none;
  border: 1px solid rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

.mobile-menu summary::-webkit-details-marker {
  display: none;
}

.mobile-menu nav {
  position: absolute;
  top: calc(100% + 0.65rem);
  right: 0;
  width: min(18rem, calc(100vw - 2rem));
  padding: 0.7rem;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid var(--line);
  box-shadow: 0 18px 46px -24px rgba(5, 20, 28, 0.8);
}

.mobile-menu nav a {
  display: block;
  min-height: 2.75rem;
  padding: 0.65rem 0.8rem;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.mobile-menu nav a:last-child {
  border-bottom: 0;
}

.hero {
  position: relative;
  min-height: 78vh;
  min-height: 78svh;
  display: grid;
  align-items: end;
  isolation: isolate;
  overflow: hidden;
  color: var(--white);
  background: var(--water);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(5, 21, 30, 0.88), rgba(5, 21, 30, 0.16) 72%),
    linear-gradient(0deg, rgba(5, 21, 30, 0.82), transparent 58%),
    var(--hero-image) center var(--hero-position, 50%) / cover no-repeat;
  transform: scale(1.01);
}

.hero--graphic::before {
  background:
    radial-gradient(circle at 75% 30%, rgba(199, 166, 106, 0.26), transparent 22%),
    repeating-linear-gradient(135deg, transparent 0 44px, rgba(255, 255, 255, 0.045) 44px 45px),
    linear-gradient(135deg, #102d39, #071a23 68%);
}

.hero--graphic::after {
  content: "";
  position: absolute;
  right: 8vw;
  top: 20%;
  z-index: -1;
  width: min(36vw, 28rem);
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  box-shadow:
    0 0 0 3rem rgba(255, 255, 255, 0.025),
    0 0 0 6rem rgba(255, 255, 255, 0.018);
}

.hero--chikaramochi::after {
  border: 4px solid rgba(255, 255, 255, 0.72);
  background:
    linear-gradient(rgba(7, 26, 35, 0.08), rgba(7, 26, 35, 0.3)),
    url("../assets/images/history/chikaramochi/carrying-rice-bales-to-market-1890s.jpg")
      52% center / cover no-repeat;
  box-shadow:
    0 0 0 3rem rgba(255, 255, 255, 0.035),
    0 0 0 6rem rgba(255, 255, 255, 0.022),
    0 1.5rem 4rem rgba(0, 0, 0, 0.38);
}

.hero--map::after {
  border: 4px solid rgba(255, 255, 255, 0.72);
  background:
    linear-gradient(rgba(7, 26, 35, 0.02), rgba(7, 26, 35, 0.28)),
    url("../assets/images/current/map/hero-eitai-bridge-walkway.webp")
      48% 42% / cover no-repeat;
  box-shadow:
    0 0 0 3rem rgba(255, 255, 255, 0.035),
    0 0 0 6rem rgba(255, 255, 255, 0.022),
    0 1.5rem 4rem rgba(0, 0, 0, 0.38);
}

.hero__inner {
  width: var(--content);
  margin: 0 auto;
  padding: 11rem 0 clamp(5.5rem, 9vw, 7.5rem);
}

.eyebrow {
  margin: 0 0 0.65rem;
  color: var(--water-mid);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.27em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--white);
}

h1,
h2,
h3 {
  overflow-wrap: normal;
  word-break: auto-phrase;
  line-break: strict;
  text-wrap: balance;
}

.hero h1,
.display-title {
  margin: 0;
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: 0.07em;
  line-height: 1.35;
  overflow-wrap: normal;
  word-break: auto-phrase;
  line-break: strict;
  text-wrap: balance;
}

.hero h1 {
  max-width: 10em;
  margin-bottom: 1rem;
  font-size: clamp(3rem, 8vw, 6.2rem);
  letter-spacing: 0.1em;
  text-shadow: 0 5px 32px rgba(0, 0, 0, 0.45);
}

.display-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
}

.hero__lead {
  max-width: 40rem;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.08rem, 2.2vw, 1.4rem);
}

.hero__credit {
  position: absolute;
  right: max(24px, 4vw);
  bottom: 1.2rem;
  max-width: 38rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.875rem;
  text-align: right;
}

.hero__credit a,
figcaption a {
  text-underline-offset: 0.2em;
}

.section {
  padding: clamp(5rem, 10vw, 8rem) 0;
}

.section--deep {
  color: var(--white);
  background: var(--ink);
}

.section--water {
  color: var(--white);
  background: var(--water);
}

.section--paper-deep {
  background: var(--paper-deep);
}

.section__inner,
.intro {
  width: var(--content);
  margin-inline: auto;
}

.intro {
  padding: clamp(5rem, 10vw, 8rem) 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(3rem, 6vw, 5rem);
}

.copy p,
.section-head p,
.media-copy p {
  color: var(--ink-soft);
}

.section--deep .eyebrow,
.section--water .eyebrow {
  color: var(--gold);
}

.section--deep .section-head p,
.section--water .section-head p,
.section--deep .media-copy p,
.section--water .media-copy p {
  color: rgba(255, 255, 255, 0.76);
}

.section-head {
  max-width: 52rem;
  margin-bottom: 2.6rem;
}

.section-head .display-title {
  margin-bottom: 0.9rem;
}

.media-split {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 1fr);
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: center;
}

.media-split--reverse {
  grid-template-columns: minmax(18rem, 1fr) minmax(0, 1.1fr);
}

.media-split--reverse .media-copy {
  order: -1;
}

.media-copy .display-title {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
}

figure {
  margin: 0;
}

.media img {
  height: clamp(26rem, 50vw, 42rem);
  object-fit: cover;
}

.media--map img {
  height: min(72vw, 52rem);
  object-fit: contain;
  background: #d8cfbc;
}

figcaption {
  margin-top: 0.7rem;
  color: var(--ink-soft);
  font-size: 0.875rem;
  line-height: 1.7;
}

.section--deep figcaption,
.section--water figcaption {
  color: rgba(255, 255, 255, 0.68);
}

.fact-grid,
.card-grid,
.photo-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.fact-grid {
  grid-template-columns: repeat(3, 1fr);
  margin-top: 2rem;
}

.fact,
.card {
  padding: 1.35rem;
  background: var(--paper);
}

.fact strong {
  display: block;
  color: var(--water);
  font-family: var(--display);
  font-size: 1.4rem;
}

.fact span,
.card p {
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.card-grid {
  grid-template-columns: repeat(3, 1fr);
}

.card h3 {
  margin: 0 0 0.55rem;
  color: var(--ink);
  font-family: var(--display);
  font-size: 1.35rem;
}

.card p {
  margin: 0;
}

.photo-grid {
  grid-template-columns: repeat(2, 1fr);
}

.photo-grid figure {
  padding: 1rem;
  background: var(--paper);
}

.section--deep .photo-grid,
.section--water .photo-grid {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.18);
}

.section--deep .photo-grid figure,
.section--water .photo-grid figure {
  background: rgba(255, 255, 255, 0.06);
}

.photo-grid img {
  height: clamp(18rem, 35vw, 30rem);
  object-fit: cover;
}

.site-spot-lead {
  margin: 2rem 0 1rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.8;
}

.site-spot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 0.5rem;
  background: var(--line);
  border: 1px solid var(--line);
}

.site-spot {
  position: relative;
  display: block;
  margin: 0;
  padding: 0;
  width: 100%;
  border: 0;
  background: var(--paper);
  color: inherit;
  text-align: left;
  font: inherit;
  cursor: default;
}

.site-spot--interactive {
  cursor: pointer;
}

.site-spot--interactive:focus-visible {
  outline: 2px solid var(--water);
  outline-offset: 2px;
  z-index: 1;
}

.site-spot img {
  display: block;
  width: 100%;
  height: clamp(14rem, 28vw, 22rem);
  object-fit: cover;
}

.site-spot figcaption,
.site-spot__meta {
  display: block;
  padding: 0.85rem 1rem 1.1rem;
}

.site-spot figcaption {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.6;
}

.site-spot__name {
  display: block;
  color: var(--ink);
  font-family: var(--display);
  font-size: 1.15rem;
  letter-spacing: 0.08em;
}

.site-spot__hint {
  display: inline-block;
  margin-top: 0.35rem;
  color: var(--water);
  font-size: 0.82rem;
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.plaque-dialog {
  width: min(56rem, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  padding: 0;
  border: 1px solid rgba(18, 24, 31, 0.18);
  background: #f7f4ef;
  color: var(--ink);
  overflow: auto;
}

.plaque-dialog::backdrop {
  background: rgba(7, 18, 26, 0.62);
}

.plaque-dialog__inner {
  display: grid;
  gap: 0;
}

.plaque-dialog__toolbar {
  display: flex;
  justify-content: flex-end;
  padding: 0.75rem 0.85rem 0;
}

.plaque-dialog__close {
  min-height: 2.75rem;
  padding: 0.45rem 0.95rem;
  border: 1px solid currentColor;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
}

.plaque-dialog__close:focus-visible {
  outline: 2px solid var(--water);
  outline-offset: 2px;
}

.plaque-dialog__photo {
  margin: 0;
  padding: 0.75rem 1.25rem 0;
}

.plaque-dialog__photo img {
  display: block;
  width: 100%;
  height: auto;
  max-height: min(48vh, 28rem);
  object-fit: contain;
  background: #ece7df;
}

.plaque-dialog__photo figcaption {
  margin-top: 0.55rem;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.plaque-dialog__copy {
  padding: 1.25rem 1.35rem 1.75rem;
}

.plaque-dialog__copy h3 {
  margin: 0.2rem 0 0.85rem;
  font-family: var(--display);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: 0.08em;
}

.plaque-dialog__label {
  margin: 0 0 0.75rem;
  color: var(--water);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
}

.plaque-dialog__body {
  display: grid;
  gap: 0.85rem;
}

.plaque-dialog__body p {
  margin: 0;
  line-height: 1.9;
}

.plaque-dialog__source {
  color: var(--ink-soft);
  font-size: 0.88rem;
}

@media (min-width: 860px) {
  .plaque-dialog__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    grid-template-rows: auto 1fr;
  }

  .plaque-dialog__toolbar {
    grid-column: 1 / -1;
  }

  .plaque-dialog__photo {
    padding: 0 0 1.5rem 1.35rem;
  }

  .plaque-dialog__photo img {
    max-height: none;
    height: 100%;
    min-height: 22rem;
    object-fit: cover;
  }
}

@media (max-width: 860px) {
  .site-spot-grid {
    grid-template-columns: 1fr;
  }
}

.step-list,
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.step-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  counter-reset: walk;
}

.step-list li {
  position: relative;
  min-height: 15rem;
  padding: 4.5rem 1.4rem 1.5rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  counter-increment: walk;
}

.step-list li + li {
  border-left: 1px solid var(--line);
}

.step-list li::before {
  content: counter(walk, decimal-leading-zero);
  position: absolute;
  top: 1rem;
  color: var(--vermilion);
  font-family: var(--display);
  font-size: 1.5rem;
}

.step-list h3 {
  margin: 0 0 0.7rem;
  font-family: var(--display);
  font-size: 1.35rem;
}

.step-list p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.timeline {
  border-top: 1px solid var(--line);
}

.timeline li {
  display: grid;
  grid-template-columns: minmax(8rem, 0.35fr) minmax(0, 1fr);
  gap: 1.5rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--line);
}

.timeline strong {
  color: var(--water);
  font-family: var(--display);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.tag-list li,
.status {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  border: 1px solid currentColor;
}

.status--fact {
  color: var(--water);
}

.status--lore {
  color: var(--vermilion);
}

.status--pending {
  color: #6f6248;
}

.note {
  margin-top: 1.5rem;
  padding: 1rem 1.1rem;
  color: var(--ink-soft);
  background: rgba(199, 166, 106, 0.14);
  border-left: 3px solid var(--gold);
  font-size: 0.875rem;
}

.section--deep .note,
.section--water .note {
  color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.07);
}

.pattern {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(3rem, 7vw, 5rem);
  color: var(--white);
  background-color: var(--vermilion);
}

.pattern::before {
  content: "";
  position: absolute;
  inset: -2rem;
  z-index: -1;
  background-image: url("../assets/patterns/sagatsunagi-mark.png");
  background-repeat: repeat;
  background-size: 180px auto;
  background-position: center;
  filter: brightness(0) invert(1);
  opacity: 0.14;
  pointer-events: none;
}

.pattern__inner {
  position: relative;
  max-width: 50rem;
  margin: auto;
  padding: clamp(2rem, 5vw, 4rem);
  background: rgba(74, 20, 17, 0.82);
}

.pattern__mark {
  display: block;
  width: min(100%, 20rem);
  height: auto;
  margin: 0 auto 2rem;
  filter: brightness(0) invert(1);
}

.pattern .eyebrow {
  color: #f2d59e;
}

.ig-embed {
  margin: 2rem 0 0;
}

.ig-embed a {
  display: block;
}

.ig-embed img {
  display: block;
  width: 100%;
  max-width: 34rem;
  height: auto;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.ig-embed figcaption {
  margin-top: 0.75rem;
  max-width: 34rem;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.15rem;
  text-decoration: none;
  border: 1px solid currentColor;
}

.btn--solid {
  color: var(--white);
  background: var(--water);
  border-color: var(--water);
}

.section--deep .btn--solid,
.section--water .btn--solid {
  color: var(--ink);
  background: var(--white);
  border-color: var(--white);
}

.site-footer {
  padding: 3.5rem max(24px, 4vw);
  color: rgba(255, 255, 255, 0.74);
  background: #071a23;
  text-align: center;
}

.site-footer__brand {
  margin: 0 0 0.5rem;
  color: var(--white);
  font-family: var(--display);
  font-size: 1.5rem;
  letter-spacing: 0.18em;
}

.site-footer p {
  margin: 0.35rem 0;
}

@media (max-width: 860px) {
  .site-nav {
    display: none;
  }

  .mobile-menu {
    display: block;
  }

  .intro,
  .media-split,
  .media-split--reverse {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .media-split--reverse .media-copy {
    order: 0;
  }

  .card-grid,
  .step-list {
    grid-template-columns: 1fr;
  }

  .step-list li + li {
    border-left: 0;
    border-top: 0;
  }
}

@media (max-width: 620px) {
  :root {
    --content: min(100% - 28px, 1120px);
  }

  html {
    font-size: 16px;
  }

  .site-header {
    min-height: 70px;
    padding-inline: 14px;
  }

  .brand {
    font-size: 1.05rem;
  }

  .brand small {
    font-size: 0.75rem;
  }

  .hero {
    min-height: 72svh;
  }

  .hero__inner {
    padding-top: 8.5rem;
  }

  .hero h1 {
    font-size: clamp(2.35rem, 11vw, 3.25rem);
    letter-spacing: 0.08em;
  }

  .hero__credit {
    left: 14px;
    right: 14px;
    text-align: left;
  }

  .fact-grid,
  .photo-grid {
    grid-template-columns: 1fr;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .media img {
    height: 26rem;
  }

  .media--map img {
    height: auto;
  }
}