:root {
  --bg: #f7f3f1;
  --paper: #fffdfb;
  --text: #222222;
  --muted: #666666;
  --light-muted: #999999;

  /* Chuo-like restrained red */
  --accent: #a53a2a;
  --accent-dark: #7f241c;
  --accent-soft: #f3e1dc;

  --border: #dec9c3;
  --max-width: 960px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Helvetica Neue",
    Arial,
    "Hiragino Kaku Gothic ProN",
    "Yu Gothic",
    Meiryo,
    sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  font-size: 16px;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}

.container {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
}

/* Header */

.site-header {
  background: var(--paper);
  border-bottom: 2px solid var(--accent);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 20px 0;
}

.site-title a {
  display: inline-flex;
  flex-direction: column;
  color: var(--text);
  text-decoration: none;
}

.site-title-ja {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.site-title-en {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.92rem;
}

.nav a {
  color: var(--text);
}

.nav a:hover {
  color: var(--accent);
  text-decoration: none;
}

/* Mobile menu */

.mobile-menu {
  display: none;
}

.mobile-menu summary {
  list-style: none;
}

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

/* Top page */

.top {
  padding: 70px 0 54px;
}

.top-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) 300px;
  gap: 34px;
  align-items: stretch;
}

.profile-panel,
.menu-panel {
  background: var(--paper);
  border: 1px solid var(--border);
}

.profile-panel {
  padding: 48px 52px;
  min-height: 420px;
}

.small-label {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.profile-panel h1 {
  margin: 0;
  font-size: 2.45rem;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.name-en {
  margin: 4px 0 26px;
  color: var(--muted);
  font-size: 1.05rem;
}

.affiliation {
  margin: 0 0 24px;
  color: var(--muted);
}

.description {
  max-width: 620px;
  margin: 0 0 30px;
}

.keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 34px;
}

.keywords span {
  padding: 4px 10px;
  background: var(--accent-soft);
  border-radius: 999px;
  color: var(--accent-dark);
  font-size: 0.86rem;
}

.contact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.92rem;
}

.contact-line span {
  color: var(--text);
  font-weight: 600;
}

/* Menu panel */

.menu-panel {
  padding: 30px 28px;
}

.menu-panel h2 {
  margin: 0 0 20px;
  color: var(--accent);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.menu-item {
  display: block;
  padding: 15px 0;
  border-top: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
}

.menu-item:last-child {
  border-bottom: 1px solid var(--border);
}

.menu-item:hover {
  color: var(--accent);
  text-decoration: none;
}

.menu-ja {
  display: block;
  font-size: 1rem;
}

.menu-en {
  display: block;
  color: var(--light-muted);
  font-size: 0.78rem;
  line-height: 1.4;
}

/* Bottom info */

.bottom-info {
  padding: 0 0 58px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.info-grid section {
  padding: 24px 0 0;
  border-top: 1px solid var(--border);
}

.info-grid h2 {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 1rem;
  font-weight: 600;
}

.info-grid p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.94rem;
}

.info-grid a {
  font-size: 0.9rem;
}

/* Sub pages */

.page {
  padding: 54px 0 70px;
}

.page-header {
  margin-bottom: 36px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.page-header h1,
.page-header h2 {
  margin: 0;
  font-size: 1.8rem;
  font-weight: 500;
}

.page-header p {
  margin: 4px 0 0;
  color: var(--light-muted);
}

.content {
  max-width: 820px;
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 36px 42px;
}

.content h2,
.content h3 {
  margin: 36px 0 12px;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--accent);
}

.content h2:first-child,
.content h3:first-child {
  margin-top: 0;
}

.content p {
  margin: 0 0 18px;
}

.content ul {
  padding-left: 1.4em;
}
.content ol {
  padding-left: 0.0em;
}

.content li {
  margin-bottom: 8px;
}

/* CV tables */

.cv-table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 34px;
  font-size: 0.95rem;
  background: var(--paper);
}

.cv-table th,
.cv-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.cv-table tr:first-child th,
.cv-table tr:first-child td {
  border-top: 1px solid var(--border);
}

.cv-table th {
  width: 180px;
  color: var(--muted);
  font-weight: 500;
  text-align: right;
  white-space: nowrap;
  background: rgba(165, 58, 42, 0.04);
  font-family:
    "SFMono-Regular",
    Consolas,
    "Liberation Mono",
    Menlo,
    monospace;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
}

.cv-table td {
  color: var(--text);
}

.cv-table a {
  word-break: break-all;
}

/* Tables without dates, such as basic information */

.cv-table.basic th {
  width: 120px;
  text-align: left;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--accent);
}

/* Footer */

.site-footer {
  padding: 24px 0;
  background: var(--paper);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.88rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.site-footer p {
  margin: 0;
}

/* Teaching */

.teaching-table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 34px;
  font-size: 0.95rem;
  background: var(--paper);
}

.teaching-table th,
.teaching-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.teaching-table tr:first-child th,
.teaching-table tr:first-child td {
  border-top: 1px solid var(--border);
}

.teaching-table th {
  width: 180px;
  color: var(--muted);
  font-weight: 500;
  text-align: right;
  white-space: nowrap;
  background: rgba(165, 58, 42, 0.04);
  font-family:
    "SFMono-Regular",
    Consolas,
    "Liberation Mono",
    Menlo,
    monospace;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
}

.teaching-table td {
  color: var(--text);
}

.course-title {
  display: block;
  color: var(--text);
  font-weight: 500;
}

.course-note {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Publications */

.paper-list {
  margin: 18px 0 0;
  padding: 0;
}

.paper-item {
  display: block;
  margin: 0 0 24px;
  padding: 0;
  border: none;
}

.paper-title {
  display: block;
  margin: 0;
  padding: 0;
  color: var(--text);
  font-weight: 600;
  line-height: 1.55;
}

.paper-meta {
  display: block;
  margin: 4px 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

.paper-meta a {
  color: var(--accent);
  text-decoration: none;
}

.paper-meta a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}

.pub-year {
  margin: 38px 0 16px;
  padding: 0;
  color: var(--accent);
  font-size: 1.2rem;
  font-weight: 600;
  border: none;
}

.more-link {
  margin-top: 28px;
}

.more-link a {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--border);
  color: var(--accent);
  background: var(--paper);
  text-decoration: none;
}

.more-link a:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
  text-decoration: none;
}

/* Smartphone */

@media (max-width: 800px) {
  .container {
    width: min(100% - 28px, var(--max-width));
  }

  .header-inner {
    flex-direction: row;
    align-items: center;
    padding: 13px 0;
  }

  .site-title-ja {
    font-size: 1.05rem;
  }

  .site-title-en {
    display: none;
  }

  .desktop-nav {
    display: none;
  }

  .mobile-menu {
    display: block;
    position: relative;
  }

  .mobile-menu summary {
    cursor: pointer;
    font-size: 1.45rem;
    line-height: 1;
    color: var(--text);
    padding: 4px 0 4px 12px;
  }

  .mobile-nav {
    position: absolute;
    right: 0;
    top: 34px;
    min-width: 190px;
    padding: 8px 0;
    background: var(--paper);
    border: 1px solid var(--border);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.10);
    z-index: 20;
  }

  .mobile-nav a {
    display: block;
    padding: 10px 18px;
    color: var(--text);
    white-space: nowrap;
  }

  .mobile-nav a:hover {
    color: var(--accent-dark);
    background: var(--accent-soft);
    text-decoration: none;
  }

  .top {
    padding: 34px 0 34px;
  }

  .top-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .profile-panel {
    padding: 32px 26px;
    min-height: auto;
  }

  .profile-panel h1 {
    font-size: 2rem;
  }

  .name-en {
    margin-bottom: 20px;
  }

  .description {
    margin-bottom: 24px;
  }

  .keywords {
    margin-bottom: 26px;
  }

  .menu-panel {
    padding: 24px 24px;
  }

  .bottom-info {
    padding-bottom: 42px;
  }

  .info-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .page {
    padding: 40px 0 56px;
  }

  .page-header {
    margin-bottom: 24px;
  }

  .content {
    padding: 28px 24px;
  }
  
  .cv-table,
  .cv-table tbody,
  .cv-table tr,
  .cv-table th,
  .cv-table td {
    display: block;
    width: 100%;
  }

  .cv-table {
    border-top: 1px solid var(--border);
    margin-top: 12px;
  }

  .cv-table tr {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
  }

  .cv-table tr:first-child {
    border-top: none;
  }

  .cv-table th,
  .cv-table td,
  .cv-table tr:first-child th,
  .cv-table tr:first-child td {
    border: none;
  }

  .cv-table th {
    padding: 0 0 4px;
    background: transparent;
    color: var(--accent);
    text-align: left;
    font-size: 0.86rem;
    font-family:
      "SFMono-Regular",
      Consolas,
      "Liberation Mono",
      Menlo,
      monospace;
  }

  .cv-table.basic th {
    font-family: inherit;
    font-size: 0.9rem;
  }

  .cv-table td {
    padding: 0;
  }

  .teaching-table,
  .teaching-table tbody,
  .teaching-table tr,
  .teaching-table th,
  .teaching-table td {
    display: block;
    width: 100%;
  }

  .teaching-table {
    border-top: 1px solid var(--border);
    margin-top: 12px;
  }

  .teaching-table tr {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
  }

  .teaching-table tr:first-child {
    border-top: none;
  }

  .teaching-table th,
  .teaching-table td,
  .teaching-table tr:first-child th,
  .teaching-table tr:first-child td {
    border: none;
  }

  .teaching-table th {
    padding: 0 0 4px;
    background: transparent;
    color: var(--accent);
    text-align: left;
    font-size: 0.86rem;
    font-family:
      "SFMono-Regular",
      Consolas,
      "Liberation Mono",
      Menlo,
      monospace;
  }

  .teaching-table td {
    padding: 0;
  }

  .paper-list {
    margin-top: 16px;
    padding: 0;
  }

  .paper-item {
    margin-bottom: 22px;
    padding: 0;
  }

  .paper-title {
    line-height: 1.55;
  }

  .paper-meta {
    line-height: 1.55;
  }

  .pub-year {
    margin: 32px 0 14px;
    font-size: 1.15rem;
  }
}