/* =========================
   Theme tokens — Heisei Retro
   ========================= */
:root {
  --ink: #162238;
  --accent: #007fff;
  --accent-soft: #8fd0ff;
  --bg: #d8e8ff;
  --surface: #fefefe;
  --surface-strong: #f1f6ff;
  --line: #0f1a2c;
  --shadow: 6px 6px 0 rgba(15, 26, 44, 0.18);
}

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

body {
  margin: 0;
  font-family: "Zen Kaku Gothic Antique", "BIZ UDPGothic", "Hiragino Sans", "MS PGothic", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  min-height: 100vh;
}

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

a {
  color: inherit;
}

main {
  padding: 2rem 1rem 4rem;
}

/* =========================
   Marquee
   ========================= */
.marquee {
  background: #b8d8ff;
  border-bottom: 2px solid var(--line);
  overflow: hidden;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 14s linear infinite;
}

.marquee span {
  padding: 0.65rem 2rem;
  white-space: nowrap;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* =========================
   Header
   ========================= */
.retro-container {
  max-width: 1120px;
  margin: 0 auto;
}

.site-header {
  background: var(--surface);
  border-bottom: 4px solid var(--line);
  padding: 1.5rem 1rem;
  margin: 0 auto;
  box-shadow: var(--shadow);
}

.logo-block {
  border: 2px solid var(--line);
  padding: 1rem 1.5rem;
  background: var(--surface-strong);
  box-shadow: inset 0 0 0 2px #fff;
}

.logo-block h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  letter-spacing: 0.4em;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
}

.logo-sub,
.logo-note {
  margin: 0;
  font-size: 0.85rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.logo-note {
  margin-top: 0.35rem;
}

.main-nav {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.5rem;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  letter-spacing: 0.3em;
}

.main-nav a {
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 0.2rem;
}

.main-nav a:hover {
  border-color: var(--line);
}

/* =========================
   Intro board
   ========================= */
.intro-board {
  margin-top: 2rem;
  border: 3px solid var(--line);
  padding: 2rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.board-split {
  display: grid;
  gap: 2rem;
}

.board-tag {
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}

.board-column-text h2 {
  margin: 0 0 1rem;
  font-size: 2rem;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
}

.board-column-visual {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  align-items: stretch;
}

.polaroid {
  border: 2px solid var(--line);
  background: #fff;
  padding: 0.6rem;
  box-shadow: var(--shadow);
}

.polaroid img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  height: auto;
  object-fit: cover;
}

.polaroid h3 {
  min-height: 2.8em;
  margin: 0.55rem 0 0;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
}

.polaroid .visual-description {
  margin: 0.4rem 0 0;
  font-size: 0.82rem;
  letter-spacing: 0;
  line-height: 1.65;
}

/* =========================
   Info panels
   ========================= */
.info-panels {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.info-card {
  display: flex;
  flex-direction: column;
  border: 2px solid var(--line);
  background: var(--surface-strong);
  padding: 1.5rem;
  font-size: 0.95rem;
  box-shadow: var(--shadow);
}

.info-card h3 {
  margin: 0 0 0.7rem;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  letter-spacing: 0.25em;
}

.info-card ul {
  margin: 0.95rem 0 0;
  padding-left: 1.2rem;
}

.info-card-link {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 1rem;
  border-bottom: 1px solid var(--line);
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  letter-spacing: 0.12em;
  text-decoration: none;
}

/* =========================
   Board components
   ========================= */
.board {
  margin-top: 2.5rem;
  border: 3px double var(--line);
  padding: 1.8rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.board-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  letter-spacing: 0.2em;
  margin-bottom: 1rem;
}

.board-header h2 {
  margin: 0;
}

.board-header a {
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.board-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.board-list li {
  padding: 0.75rem 0;
  border-top: 1px dashed rgba(22, 34, 56, 0.4);
  font-size: 0.95rem;
}

.board-list li:first-child {
  border-top: none;
}

.board-list span {
  display: inline-block;
  width: 120px;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
}

.retro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.retro-grid article {
  border: 2px solid var(--line);
  padding: 1rem;
  background: var(--surface-strong);
}

.retro-grid h3 {
  margin: 0 0 0.5rem;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  letter-spacing: 0.15em;
}

.board-contact p {
  margin: 0;
  line-height: 1.8;
}

/* =========================
   Legacy content (news/research pages)
   ========================= */
.section {
  padding: 3rem 1rem;
}

.section-inner {
  max-width: 900px;
  margin: 0 auto;
  background: var(--surface);
  border: 2px solid var(--line);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.section-title {
  margin: 0 0 1rem;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  letter-spacing: 0.3em;
}

.news-list,
.pub-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.news-list li,
.pub-list li {
  padding: 0.8rem 0;
  border-top: 1px dashed rgba(22, 34, 56, 0.3);
}

.news-list li:first-child,
.pub-list li:first-child {
  border-top: none;
}

.news-date {
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  margin-right: 0.5rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.card {
  border: 2px solid var(--line);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.card-thumb img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-body {
  padding: 1rem;
}

.card-title {
  margin: 0 0 0.5rem;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
}

/* =========================
   Research page
   ========================= */
.research-page {
  padding-inline: 0;
}

.research-intro {
  max-width: 1120px;
}

.research-kicker,
.research-topic-kicker {
  margin: 0;
  color: var(--accent);
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.22em;
}

.research-lead {
  max-width: 850px;
  margin: 0 0 2rem;
  font-size: 1.05rem;
}

.research-topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.research-topic {
  display: flex;
  min-width: 0;
  flex-direction: column;
  border: 2px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.research-topic > img {
  width: 100%;
  aspect-ratio: 1;
  border-bottom: 2px solid var(--line);
  object-fit: cover;
}

.research-topic-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1.1rem;
}

.research-topic h3,
.research-topic h4 {
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
}

.research-topic h3 {
  min-height: 3.4em;
  margin: 0.35rem 0 0.7rem;
  font-size: 1.15rem;
}

.research-topic h4 {
  margin: auto 0 0.25rem;
  font-size: 0.9rem;
}

.research-topic p {
  margin: 0 0 1rem;
}

.research-topic ul {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.9rem;
}

.research-cycle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
  padding: 1rem;
  border: 2px dashed var(--line);
  background: var(--surface-strong);
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
}

.research-cycle p {
  margin: 0;
}

.research-cycle span {
  display: block;
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
}

/* =========================
   Publications page
   ========================= */
.publication-page {
  padding-inline: 0;
}

.publication-inner {
  max-width: 1120px;
}

.publication-kicker,
.publication-source-label {
  margin: 0;
  color: var(--accent);
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.22em;
}

.publication-lead {
  max-width: 780px;
  margin: 0 0 1.5rem;
  font-size: 1.05rem;
}

.publication-source {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  padding: 1rem 1.2rem;
  border: 2px dashed var(--line);
  background: var(--surface-strong);
}

.publication-source p:not(.publication-source-label) {
  margin: 0.3rem 0 0;
  font-size: 0.9rem;
}

.publication-source > a,
.publication-other a {
  flex: 0 0 auto;
  border-bottom: 1px solid var(--line);
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.publication-year-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.5rem 0 0;
}

.publication-year-nav a {
  min-width: 4.6rem;
  padding: 0.35rem 0.7rem;
  border: 2px solid var(--line);
  background: var(--surface);
  box-shadow: 3px 3px 0 rgba(15, 26, 44, 0.18);
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  letter-spacing: 0.08em;
  text-align: center;
  text-decoration: none;
}

.publication-year {
  margin-top: 2.5rem;
}

.publication-year-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.45rem;
  border-bottom: 3px solid var(--line);
}

.publication-year-heading h3,
.publication-other h3,
.publication-other h4 {
  margin: 0;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
}

.publication-year-heading h3,
.publication-other h3 {
  letter-spacing: 0.18em;
}

.publication-year-heading p {
  margin: 0;
  font-size: 0.85rem;
}

.publication-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.publication-list li {
  padding: 1.1rem 0;
  border-bottom: 1px dashed rgba(22, 34, 56, 0.4);
}

.publication-list h4 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.55;
}

.pub-authors,
.pub-venue {
  margin: 0.35rem 0 0;
  font-size: 0.9rem;
}

.pub-venue {
  color: #45536a;
}

.publication-other {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 3px solid var(--line);
}

.publication-other-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.publication-other article {
  padding: 1rem;
  border: 2px solid var(--line);
  background: var(--surface-strong);
}

.publication-other h4 {
  letter-spacing: 0.08em;
}

.publication-other p {
  margin: 0.7rem 0;
  font-size: 0.92rem;
}

/* =========================
   News page
   ========================= */
.news-page {
  padding-inline: 0;
}

.news-inner {
  max-width: 1120px;
}

.news-kicker,
.news-source-label,
.news-category {
  margin: 0;
  color: var(--accent);
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.22em;
}

.news-lead {
  max-width: 780px;
  margin: 0 0 1.5rem;
  font-size: 1.05rem;
}

.news-source {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  padding: 1rem 1.2rem;
  border: 2px dashed var(--line);
  background: var(--surface-strong);
}

.news-source p:not(.news-source-label) {
  margin: 0.3rem 0 0;
  font-size: 0.9rem;
}

.news-source > a {
  flex: 0 0 auto;
  border-bottom: 1px solid var(--line);
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.news-timeline {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  border-top: 3px solid var(--line);
}

.news-item {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: 1.5rem;
  padding: 1.25rem 0;
  border-bottom: 1px dashed rgba(22, 34, 56, 0.4);
}

.news-item time {
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  letter-spacing: 0.08em;
}

.news-item-body p:not(.news-category) {
  margin: 0.3rem 0 0;
}

.news-item-body a {
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

/* =========================
   Footer
   ========================= */
.site-footer {
  border-top: 3px solid var(--line);
  background: var(--surface-strong);
  margin-top: 3rem;
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.5rem;
  font-family: "DotGothic16", "Space Grotesk", sans-serif;
  letter-spacing: 0.3em;
  text-align: center;
}

/* =========================
   Responsive tweaks
   ========================= */
@media (max-width: 720px) {
  .main-nav {
    display: flex;
    flex-flow: row wrap;
    align-items: center;
    gap: 0.6rem 0.9rem;
    font-size: 0.85rem;
    letter-spacing: 0.12em;
  }

  .main-nav a {
    flex: 0 0 auto;
    padding-bottom: 0.1rem;
  }

  .board-list span {
    width: 100%;
    margin-bottom: 0.3rem;
  }

  .section-inner {
    padding: 1.25rem;
  }

  .research-topic-grid {
    grid-template-columns: 1fr;
  }

  .research-topic h3 {
    min-height: 0;
  }

  .research-cycle {
    align-items: stretch;
    flex-direction: column;
    gap: 0.35rem;
  }

  .research-cycle b {
    transform: rotate(90deg);
    align-self: center;
  }

  .publication-source {
    align-items: flex-start;
    flex-direction: column;
  }

  .publication-year-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.2rem;
  }

  .publication-other-grid {
    grid-template-columns: 1fr;
  }

  .news-source {
    align-items: flex-start;
    flex-direction: column;
  }

  .news-item {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}