:root {
  color-scheme: dark;
  --wall: #101a21;
  --wall-raised: #1a2930;
  --wall-rule: #52686d;
  --paper: #f0ebdc;
  --paper-warm: #e2dac8;
  --paper-rule: #b7ad9d;
  --ink: #172124;
  --ink-soft: #4e5755;
  --red: #e35f4b;
  --red-deep: #8d2f2a;
  --blue: #215b6d;
  --paper-muted: #bac5c1;
  --focus: #ffc36b;
  color: var(--paper);
  background: var(--wall);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  line-height: 1.7;
  scrollbar-color: var(--red) var(--wall);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--wall);
  scroll-behavior: smooth;
}

body {
  min-width: 0;
  margin: 0;
  background: var(--wall);
  color: var(--paper);
}

::selection {
  color: var(--wall);
  background: var(--red);
}

a {
  color: var(--red-deep);
  text-decoration-color: currentColor;
  text-decoration-thickness: 0.1em;
  text-underline-offset: 0.22em;
}

a:hover {
  color: #64211f;
}

a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 0.25rem;
}

.skip-link {
  position: absolute;
  z-index: 20;
  top: 0.75rem;
  left: -20rem;
  padding: 0.65rem 0.9rem;
  background: var(--paper);
  color: var(--ink);
  font-weight: 800;
}

.skip-link:focus {
  left: 1rem;
}

.site-header,
.site-main,
.site-footer {
  width: min(calc(100% - 2rem), 86rem);
  margin-inline: auto;
}

.site-header {
  display: grid;
  grid-template-columns: minmax(19rem, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(1rem, 2.5vw, 2.5rem);
  padding: clamp(1.25rem, 3vw, 2.5rem) 0 clamp(2.5rem, 5vw, 4rem);
}

.cover-panel {
  position: relative;
  display: flex;
  min-height: 34rem;
  flex-direction: column;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 3.5rem);
  border: 1px solid var(--wall-rule);
  background: var(--wall-raised);
  box-shadow: 0 1.5rem 3rem rgba(0, 0, 0, 0.28);
  isolation: isolate;
}

.cover-panel::before {
  position: absolute;
  z-index: -1;
  inset: 1rem;
  border: 1px solid rgba(226, 218, 200, 0.25);
  content: "";
  pointer-events: none;
}

.cover-panel::after {
  position: absolute;
  top: 2rem;
  right: 0.9rem;
  bottom: 2rem;
  width: 1px;
  background: var(--red);
  content: "";
  opacity: 0.8;
  pointer-events: none;
}

.cover-mark,
.sheet-heading p,
.person-file,
.directory-heading p {
  margin: 0;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  line-height: 1.4;
  text-transform: uppercase;
}

.cover-mark {
  color: var(--red);
}

.cover-panel h1,
.contents-sheet h2,
.directory-heading h2,
.people-rail h2,
.colophon-sheet h2,
.person h2 {
  font-family: Georgia, "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  font-weight: 500;
}

.cover-panel h1 {
  max-width: 6ch;
  margin: auto 0 1.5rem;
  color: var(--paper);
  font-size: clamp(3rem, 7vw, 6rem);
  letter-spacing: -0.04em;
  line-height: 1.05;
  text-wrap: balance;
}

.cover-intro {
  max-width: 32ch;
  margin: 0;
  color: var(--paper);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
}

.cover-status {
  max-width: 32ch;
  margin: 3rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--wall-rule);
  color: var(--paper-muted);
  font-size: 0.85rem;
}

.cover-status strong {
  display: inline-block;
  margin-bottom: 0.2rem;
  color: var(--paper);
  font-family: Georgia, "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  font-size: 1rem;
}

.paper-sheet,
.person-sheet,
.colophon-sheet {
  position: relative;
  border: 1px solid var(--paper-rule);
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 1.25rem 2.5rem rgba(0, 0, 0, 0.22);
}

.paper-sheet::before,
.paper-sheet::after,
.person-sheet::before,
.person-sheet::after,
.colophon-sheet::before,
.colophon-sheet::after {
  position: absolute;
  width: 1.15rem;
  height: 1.15rem;
  border-color: var(--red);
  content: "";
  pointer-events: none;
}

.paper-sheet::before,
.colophon-sheet::before {
  top: 0.85rem;
  left: 0.85rem;
  border-top: 1px solid;
  border-left: 1px solid;
}

.paper-sheet::after,
.colophon-sheet::after {
  right: 0.85rem;
  bottom: 0.85rem;
  border-right: 1px solid;
  border-bottom: 1px solid;
}

.contents-sheet {
  display: flex;
  min-height: 34rem;
  flex-direction: column;
  padding: clamp(1.35rem, 3vw, 2.75rem);
}

.sheet-heading,
.directory-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.sheet-heading {
  padding-bottom: 0.85rem;
  border-bottom: 2px solid var(--ink);
}

.contents-sheet h2,
.directory-heading h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.5rem, 2.5vw, 2.15rem);
  letter-spacing: 0.04em;
  line-height: 1.2;
}

.sheet-heading p,
.directory-heading p {
  color: var(--blue);
  text-align: right;
}

.sheet-note,
.section-note {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.sheet-note {
  margin: 0.95rem 0 0;
}

.contents-list,
.rail-list,
.directory {
  margin: 0;
  padding: 0;
  list-style: none;
}

.contents-list {
  display: flex;
  flex: 1;
  flex-direction: column;
  margin-top: 1rem;
}

.contents-item {
  flex: 1;
  border-bottom: 1px solid var(--paper-rule);
}

.contents-item:last-child {
  border-bottom: 0;
}

.contents-link {
  display: grid;
  min-height: 4.35rem;
  grid-template-columns: 2.5rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.75rem;
  color: var(--ink);
  text-decoration: none;
}

.contents-link:hover {
  background: var(--paper-warm);
  color: var(--ink);
}

.contents-link:focus-visible {
  outline-offset: -0.2rem;
}

.contents-number,
.rail-number,
.person-file,
.source-mark {
  color: var(--red-deep);
}

.contents-number,
.rail-number {
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.contents-person,
.rail-person {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.contents-name {
  font-family: Georgia, "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  font-size: clamp(1rem, 1.7vw, 1.3rem);
  line-height: 1.3;
}

.contents-reading,
.rail-reading {
  color: var(--ink-soft);
  font-size: 0.73rem;
  line-height: 1.35;
}

.contents-category,
.rail-category {
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-align: right;
}

.site-main {
  padding-bottom: clamp(3rem, 8vw, 7rem);
}

.reading-layout {
  display: grid;
  grid-template-columns: minmax(10rem, 13rem) minmax(0, 1fr);
  align-items: start;
  gap: clamp(1.25rem, 4vw, 4rem);
}

.people-rail {
  position: sticky;
  top: 1.25rem;
}

.people-rail nav {
  padding: 1rem 0;
  border-top: 1px solid var(--wall-rule);
  border-bottom: 1px solid var(--wall-rule);
}

.people-rail h2 {
  margin: 0 0 1rem;
  color: var(--paper);
  font-size: 1.2rem;
  letter-spacing: 0.05em;
}

.rail-item {
  border-top: 1px solid rgba(82, 104, 109, 0.7);
}

.rail-item:first-child {
  border-top: 0;
}

.rail-link {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.35rem 0.5rem;
  padding: 0.75rem 0.35rem;
  color: var(--paper-muted);
  text-decoration: none;
}

.rail-link:hover {
  background: var(--wall-raised);
  color: var(--paper);
}

.rail-number {
  grid-row: span 2;
  align-self: start;
}

.rail-person {
  grid-column: 2;
}

.rail-name {
  color: var(--paper);
  font-family: Georgia, "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  font-size: 0.95rem;
  line-height: 1.35;
}

.rail-category {
  grid-column: 2;
  margin-top: -0.2rem;
  color: var(--red);
  text-align: left;
}

.directory-heading {
  padding: 0.85rem 0;
  border-top: 2px solid var(--paper);
  border-bottom: 1px solid var(--wall-rule);
}

.directory-heading h2 {
  color: var(--paper);
}

.directory-heading p {
  color: var(--paper-muted);
}

.section-note {
  margin: 1rem 0 0;
  color: var(--paper-muted);
}

.directory {
  margin-top: 1.5rem;
}

.directory-item {
  list-style: none;
}

.directory-item + .directory-item {
  margin-top: 1.35rem;
}

.person {
  scroll-margin-top: 1.5rem;
}

.person-sheet {
  display: grid;
  grid-template-columns: minmax(12rem, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(1.25rem, 4vw, 3.5rem);
  min-height: 20rem;
  padding: clamp(1.35rem, 3vw, 2.7rem);
  box-shadow: 0 1.25rem 2.5rem rgba(0, 0, 0, 0.22);
}

.directory-item:nth-child(even) .person-sheet {
  margin-left: clamp(0rem, 1.8vw, 1.35rem);
}

.person-file {
  grid-column: 1 / -1;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--paper-rule);
}

.person-file span {
  color: var(--ink-soft);
  font-weight: 500;
  letter-spacing: 0.08em;
}

.person-identity {
  min-width: 0;
  padding-right: clamp(1rem, 3vw, 2.25rem);
  border-right: 1px solid var(--paper-rule);
}

.person-category {
  margin: 0 0 1.15rem;
  color: var(--blue);
  font-size: 0.83rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.person h2 {
  max-width: 6ch;
  margin: 0;
  color: var(--ink);
  font-size: clamp(2.25rem, 5vw, 4rem);
  letter-spacing: -0.04em;
  line-height: 1.12;
  text-wrap: balance;
}

.reading {
  margin: 0.65rem 0 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.person-work {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.person-bio {
  max-width: 42ch;
  margin: 0;
  color: var(--ink);
  font-size: clamp(1rem, 1.35vw, 1.12rem);
}

.official-link {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem;
  margin: auto 0 0;
  padding-top: 1.45rem;
  border-top: 1px solid var(--paper-rule);
}

.source-mark {
  flex: 0 0 auto;
  padding: 0.1rem 0.35rem;
  border: 1px solid currentColor;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.official-link a {
  color: var(--red-deep);
  font-weight: 800;
  overflow-wrap: anywhere;
}

.link-destination {
  color: var(--ink-soft);
  font-weight: 400;
}

.person:target .person-sheet {
  outline: 2px solid var(--red);
  outline-offset: 0.4rem;
}

.site-footer {
  padding-bottom: 3rem;
}

.colophon-sheet {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(18rem, 0.75fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  padding: clamp(1.35rem, 3vw, 2.75rem);
}

.colophon-sheet h2 {
  margin: 0 0 0.65rem;
  color: var(--ink);
  font-size: 1.35rem;
  letter-spacing: 0.05em;
  line-height: 1.25;
}

.colophon-sheet p {
  max-width: 58ch;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.contact-copy {
  padding-left: clamp(1rem, 3vw, 2.25rem);
  border-left: 1px solid var(--paper-rule);
}

.contact-link {
  display: inline-block;
  margin-top: 0.35rem;
  color: var(--red-deep);
  font-weight: 800;
  overflow-wrap: anywhere;
}

@media (max-width: 62rem) {
  .site-header {
    grid-template-columns: 1fr;
  }

  .cover-panel,
  .contents-sheet {
    min-height: 0;
  }

  .cover-panel {
    min-height: 30rem;
  }

  .contents-sheet {
    min-height: 30rem;
  }

  .people-rail {
    position: static;
  }

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

  .people-rail nav {
    padding: 1rem 0 0;
  }

  .rail-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
  }

  .rail-item,
  .rail-item:first-child {
    border-top: 0;
    border-left: 1px solid rgba(82, 104, 109, 0.7);
  }

  .rail-item:first-child {
    border-left: 0;
  }

  .rail-link {
    height: 100%;
    padding: 0.75rem;
  }
}

@media (max-width: 42rem) {
  html {
    scroll-behavior: auto;
  }

  .site-header,
  .site-main,
  .site-footer {
    width: min(calc(100% - 1rem), 86rem);
  }

  .site-header {
    gap: 1rem;
    padding: 0.75rem 0 3rem;
  }

  .cover-panel {
    min-height: 27rem;
    padding: 1.35rem;
  }

  .cover-panel h1 {
    font-size: clamp(2.75rem, 14vw, 4.8rem);
  }

  .cover-status {
    margin-top: 2rem;
  }

  .contents-sheet {
    min-height: 0;
    padding: 1.25rem;
  }

  .sheet-heading,
  .directory-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.35rem;
  }

  .sheet-heading p,
  .directory-heading p {
    text-align: left;
  }

  .contents-link {
    grid-template-columns: 2rem minmax(0, 1fr);
    align-items: start;
    gap: 0.2rem 0.6rem;
    padding: 0.75rem 0.25rem;
  }

  .contents-category {
    grid-column: 2;
    text-align: left;
  }

  .reading-layout {
    gap: 2rem;
  }

  .people-rail nav {
    padding-top: 0.85rem;
  }

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

  .rail-item,
  .rail-item:first-child {
    border-left: 1px solid rgba(82, 104, 109, 0.7);
  }

  .rail-item:nth-child(odd) {
    border-left: 0;
  }

  .person-sheet {
    grid-template-columns: 1fr;
    gap: 1rem;
    min-height: 0;
    padding: 1.35rem 1.1rem 1.55rem;
  }

  .directory-item:nth-child(even) .person-sheet {
    margin-left: 0;
  }

  .person-file {
    grid-column: auto;
  }

  .person-identity {
    padding: 0 0 1rem;
    border-right: 0;
    border-bottom: 1px solid var(--paper-rule);
  }

  .person h2 {
    font-size: clamp(2.2rem, 12vw, 3.4rem);
  }

  .official-link {
    margin-top: 1.35rem;
  }

  .colophon-sheet {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 1.35rem;
  }

  .contact-copy {
    padding: 1.35rem 0 0;
    border-top: 1px solid var(--paper-rule);
    border-left: 0;
  }
}

@media (max-width: 22rem) {
  .rail-list {
    grid-template-columns: 1fr;
  }

  .rail-item,
  .rail-item:first-child,
  .rail-item:nth-child(odd) {
    border-top: 1px solid rgba(82, 104, 109, 0.7);
    border-left: 0;
  }

  .rail-item:first-child {
    border-top: 0;
  }
}

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