:root {
  color-scheme: light;
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-muted: #eef2f7;
  --text: #172033;
  --text-muted: #5b6475;
  --primary: #4f7cac;
  --primary-strong: #315f8a;
  --accent: #d8759a;
  --mint: #3f9f7f;
  --gold: #b88730;
  --tianyi: #4f7cac;
  --tianyi-strong: #315f8a;
  --erii: #c96782;
  --erii-strong: #8d3f61;
  --phrolova: #9a4358;
  --phrolova-strong: #6f2f42;
  --page-accent: var(--tianyi);
  --page-accent-strong: var(--tianyi-strong);
  --page-accent-soft: color-mix(in srgb, var(--page-accent) 12%, var(--surface));
  --border: #d9e1ea;
  --shadow: 0 18px 50px rgba(23, 32, 51, 0.08);
  --max-width: 1180px;
  --header-height: 72px;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111827;
  --surface: #182235;
  --surface-muted: #223049;
  --text: #e5e7eb;
  --text-muted: #a7b0c0;
  --primary: #8ab4e6;
  --primary-strong: #b5d3f5;
  --accent: #f0a3c0;
  --mint: #7dd3b8;
  --gold: #e8c074;
  --tianyi: #8ab4e6;
  --tianyi-strong: #b5d3f5;
  --erii: #f0a3c0;
  --erii-strong: #f5c3d5;
  --phrolova: #db8398;
  --phrolova-strong: #f1b0bf;
  --border: #344259;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(79, 124, 172, 0.04) 1px, transparent 1px),
    linear-gradient(0deg, rgba(216, 117, 154, 0.035) 1px, transparent 1px),
    var(--bg);
  background-size: 32px 32px;
  color: var(--text);
  font-family:
    Inter,
    "Noto Sans SC",
    "Source Han Sans SC",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
  overflow-x: hidden;
  transition:
    background-color 180ms ease,
    color 180ms ease;
}

body.menu-open {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary) 72%, white);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 100;
  transform: translateY(-140%);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  padding: 8px 12px;
  border: 1px solid var(--border);
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.container,
.hero-copy,
.publication-content,
.project-card,
.focus-card,
.note-item,
.timeline li {
  min-width: 0;
}

h1,
h2,
h3,
p,
.tag,
.button,
.eyebrow {
  overflow-wrap: anywhere;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: var(--header-height);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color 180ms ease, background-color 180ms ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--border);
  background: color-mix(in srgb, var(--bg) 96%, transparent);
}

.nav-shell {
  width: min(calc(100% - 40px), var(--max-width));
  min-height: var(--header-height);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--text);
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--text);
  color: var(--bg);
  font-size: 13px;
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
}

.brand-text {
  font-size: 17px;
}

.nav-panel {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--text-muted);
  font-size: 14px;
}

.nav-panel > a {
  position: relative;
  padding: 8px 0;
}

.nav-panel > a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 3px;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--accent);
  transition: transform 160ms ease;
}

.nav-panel > a:hover,
.nav-panel > a:focus-visible,
.nav-panel > a.is-active {
  color: var(--text);
}

.nav-panel > a:hover::after,
.nav-panel > a:focus-visible::after,
.nav-panel > a.is-active::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 4px;
  padding-left: 18px;
  border-left: 1px solid var(--border);
}

.theme-toggle,
.menu-toggle {
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background-color 160ms ease;
}

.theme-toggle {
  width: 42px;
  height: 36px;
  border-radius: 8px;
  font-size: 12px;
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
}

.theme-toggle:hover,
.menu-toggle:hover {
  border-color: var(--primary);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 8px;
}

.menu-toggle-lines,
.menu-toggle-lines::before,
.menu-toggle-lines::after {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 160ms ease, opacity 160ms ease;
}

.menu-toggle-lines {
  position: relative;
}

.menu-toggle-lines::before,
.menu-toggle-lines::after {
  content: "";
  position: absolute;
  left: 0;
}

.menu-toggle-lines::before {
  top: -6px;
}

.menu-toggle-lines::after {
  top: 6px;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-lines {
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-lines::before {
  transform: translateY(6px) rotate(90deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-lines::after {
  opacity: 0;
}

.hero-section {
  min-height: calc(82vh - var(--header-height));
  display: flex;
  align-items: center;
  padding: 64px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(340px, 0.82fr);
  align-items: center;
  gap: 48px;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--primary-strong);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
}

.hero-copy h1 {
  margin: 0;
  max-width: 720px;
  font-size: 56px;
  line-height: 1.12;
  letter-spacing: 0;
}

.hero-summary {
  max-width: 680px;
  margin: 22px 0 0;
  color: var(--text-muted);
  font-size: 18px;
}

.intro-summary {
  display: grid;
  gap: 10px;
}

.intro-summary p {
  margin: 0;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 84%, var(--primary) 16%);
  color: var(--text);
  padding: 4px 11px;
  font-size: 13px;
  line-height: 1.35;
  white-space: normal;
}

.compact {
  margin-top: 14px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 10px 16px;
  font-weight: 750;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  border-color: var(--primary);
}

.button.primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.button.secondary {
  background: var(--surface);
  color: var(--text);
}

.button.ghost {
  background: transparent;
  color: var(--text-muted);
}

.intro-card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 28px;
}

.intro-card {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 88%, var(--primary) 12%);
  padding: 14px;
}

.intro-card span {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  color: var(--primary-strong);
  font-size: 12px;
  font-weight: 900;
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
}

.intro-card h2 {
  margin: 8px 0 6px;
  font-size: 16px;
  line-height: 1.3;
  letter-spacing: 0;
}

.intro-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.55;
}

.hero-visual {
  margin: 0;
}

.visual-plate {
  position: relative;
  display: grid;
  place-items: end center;
  min-height: 520px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--surface) 86%, var(--primary) 14%), var(--surface)),
    var(--surface);
  box-shadow: var(--shadow);
}

.visual-plate::before {
  content: "";
  position: absolute;
  inset: 22px;
  border: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  border-radius: 10px;
}

.visual-plate img {
  position: relative;
  width: min(86%, 430px);
  max-height: 480px;
  object-fit: contain;
  object-position: bottom center;
  filter: drop-shadow(0 18px 28px rgba(23, 32, 51, 0.14));
}

.status-card {
  position: absolute;
  left: 18px;
  bottom: 18px;
  display: flex;
  align-items: center;
  gap: 9px;
  max-width: calc(100% - 36px);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  color: var(--text);
  padding: 10px 12px;
  font-size: 13px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--mint);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--mint) 20%, transparent);
  flex: none;
}

.hero-visual figcaption {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
}

.section {
  padding: 76px 0;
}

.page-hero {
  padding: 72px 0;
}

.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 42px;
  align-items: center;
}

.page-hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: 44px;
  line-height: 1.18;
  letter-spacing: 0;
}

.page-summary {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--text-muted);
  font-size: 18px;
}

.page-aside {
  display: grid;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  padding: 20px;
  box-shadow: var(--shadow);
}

.page-aside p {
  margin: 0;
  color: var(--text-muted);
}

.section-muted {
  background: color-mix(in srgb, var(--surface-muted) 70%, transparent);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.section-header h2,
.character-copy h2,
.timeline-intro h2 {
  margin: 0;
  font-size: 32px;
  line-height: 1.25;
  letter-spacing: 0;
}

.section-link {
  color: var(--primary-strong);
  font-weight: 750;
  white-space: nowrap;
}

.section-link:hover,
.section-link:focus-visible {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.focus-card,
.project-card,
.publication-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    box-shadow 180ms ease;
}

.focus-card:hover,
.project-card:hover,
.publication-item:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--primary) 70%, var(--border));
  box-shadow: 0 14px 32px rgba(23, 32, 51, 0.07);
}

.focus-card {
  min-height: 246px;
  padding: 20px;
}

.focus-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: color-mix(in srgb, var(--primary) 18%, var(--surface));
  color: var(--primary-strong);
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
  font-weight: 800;
}

.focus-card h3,
.project-card h3,
.publication-content h3,
.note-item h3,
.timeline h3 {
  margin: 16px 0 8px;
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: 0;
}

.focus-card p,
.project-card p,
.publication-content p,
.note-item p,
.timeline p,
.character-copy p,
.timeline-intro p,
.site-footer p {
  margin: 0;
  color: var(--text-muted);
}

.focus-card-accent .focus-icon {
  background: color-mix(in srgb, var(--accent) 18%, var(--surface));
  color: color-mix(in srgb, var(--accent) 86%, var(--text));
}

.focus-card-image {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 14px;
  align-items: start;
}

.focus-card-image img {
  width: 58px;
  height: 58px;
  border-radius: 8px;
  object-fit: cover;
  background: var(--surface-muted);
}

.focus-card-image h3 {
  margin-top: 0;
}

.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
  color: var(--text-muted);
  font-size: 13px;
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
}

.meta-line span {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 9px;
}

.publication-list {
  display: grid;
  gap: 14px;
}

.publication-item {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 22px;
  padding: 18px;
}

.paper-thumb {
  min-height: 128px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: var(--surface);
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
  font-weight: 900;
  font-size: 26px;
}

.paper-thumb-blue {
  background: linear-gradient(135deg, #315f8a, #4f7cac);
}

.paper-thumb-pink {
  background: linear-gradient(135deg, #8d3f61, #d8759a);
}

.paper-thumb-green {
  background: linear-gradient(135deg, #28775d, #3f9f7f);
}

.publication-meta,
.project-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-muted);
  font-size: 13px;
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
}

.publication-content h3 {
  margin-top: 6px;
}

.authors {
  font-size: 14px;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.link-row a,
.link-row button,
.card-link {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--primary-strong);
  padding: 6px 10px;
  font-size: 13px;
  font-weight: 760;
  cursor: pointer;
}

.link-row a:hover,
.link-row button:hover,
.card-link:hover {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 10%, transparent);
}

.section-characters {
  overflow: hidden;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.character-band {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(300px, 1.12fr);
  align-items: center;
  gap: 36px;
  min-height: 420px;
}

.character-copy {
  max-width: 520px;
}

.character-copy p:last-child {
  margin-top: 16px;
}

.character-stack {
  position: relative;
  min-height: 420px;
}

.character-stack::before {
  content: "";
  position: absolute;
  inset: 58px 6% 42px 8%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 10%, transparent), transparent 45%),
    color-mix(in srgb, var(--surface-muted) 72%, transparent);
}

.character-phrolova {
  position: absolute;
  right: 30%;
  bottom: -36px;
  width: min(42%, 300px);
  max-height: 420px;
  object-fit: contain;
  object-position: bottom center;
  filter: drop-shadow(0 20px 30px rgba(23, 32, 51, 0.18));
}

.character-erii {
  position: absolute;
  right: 4%;
  bottom: 26px;
  width: min(34%, 210px);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.project-card {
  padding: 20px;
}

.status {
  border-radius: 999px;
  padding: 2px 8px;
  border: 1px solid currentColor;
}

.status.active {
  color: var(--mint);
}

.status.stable {
  color: var(--primary-strong);
}

.status.experimental {
  color: var(--gold);
}

.card-link {
  margin-top: 18px;
}

.notes-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 42px;
  align-items: start;
}

.compact-header {
  margin-bottom: 20px;
}

.note-list {
  display: grid;
  gap: 14px;
}

.note-item {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 18px;
  border-bottom: 1px solid var(--border);
  padding: 0 0 16px;
}

.note-item time {
  color: var(--primary-strong);
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
  font-size: 13px;
  font-weight: 800;
}

.note-item h3 {
  margin-top: 0;
}

.quote-panel {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.quote-panel img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  object-position: center 22%;
}

.quote-panel::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 48%;
  background: linear-gradient(180deg, transparent, rgba(23, 32, 51, 0.72));
}

.quote-chip {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  z-index: 1;
  display: grid;
  gap: 4px;
  color: #ffffff;
}

.quote-chip span {
  font-size: 12px;
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
  opacity: 0.86;
}

.quote-chip strong {
  font-size: 20px;
}

.timeline-layout {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 54px;
}

.timeline-intro {
  position: sticky;
  top: calc(var(--header-height) + 28px);
  align-self: start;
}

.timeline-intro p:last-child {
  margin-top: 16px;
}

.timeline {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 24px;
  position: relative;
  padding: 0 0 30px;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: 92px;
  top: 9px;
  bottom: 0;
  width: 1px;
  background: var(--border);
}

.timeline li::after {
  content: "";
  position: absolute;
  left: 86px;
  top: 8px;
  width: 13px;
  height: 13px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 18%, transparent);
}

.timeline time {
  color: var(--primary-strong);
  font-weight: 900;
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
}

.timeline h3 {
  margin-top: 0;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 36px 0;
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.footer-brand {
  margin-bottom: 10px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px 18px;
  color: var(--text-muted);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--primary-strong);
  text-decoration: underline;
  text-underline-offset: 4px;
}

@media (max-width: 1080px) {
  .hero-copy h1 {
    font-size: 48px;
  }

  .hero-grid,
  .character-band,
  .timeline-layout {
    gap: 32px;
  }

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

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

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

@media (max-width: 860px) {
  .menu-toggle {
    display: inline-grid;
  }

  .nav-panel {
    position: fixed;
    inset: var(--header-height) 0 auto 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    padding: 18px 20px 24px;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 180ms ease, opacity 180ms ease;
  }

  .nav-panel.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-panel > a {
    min-height: 46px;
    display: flex;
    align-items: center;
    font-size: 17px;
  }

  .nav-actions {
    border-left: 0;
    border-top: 1px solid var(--border);
    margin-left: 0;
    padding: 18px 0 0;
    justify-content: space-between;
  }

  .hero-section {
    min-height: auto;
    padding-top: 48px;
  }

  .hero-grid,
  .page-hero-grid,
  .notes-layout,
  .timeline-layout {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 28px;
  }

  .visual-plate {
    min-height: 300px;
  }

  .visual-plate img {
    width: min(58%, 260px);
    max-height: 260px;
  }

  .hero-copy h1 {
    font-size: 38px;
  }

  .page-hero {
    padding: 56px 0;
  }

  .page-hero h1 {
    font-size: 34px;
  }

  .hero-summary {
    font-size: 16px;
  }

  .intro-card-grid {
    margin-top: 24px;
  }

  .page-summary {
    font-size: 16px;
  }

  .section {
    padding: 58px 0;
  }

  .section-header {
    align-items: start;
    flex-direction: column;
  }

  .character-band {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .character-stack {
    min-height: 340px;
  }

  .notes-layout {
    gap: 28px;
  }

  .quote-panel {
    max-width: 360px;
  }

  .timeline-intro {
    position: static;
  }

  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .container,
  .nav-shell {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .hero-section {
    padding: 34px 0 36px;
  }

  .hero-copy h1 {
    font-size: 32px;
  }

  .page-hero h1 {
    font-size: 30px;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .focus-grid,
  .intro-card-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }

  .publication-item {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .paper-thumb {
    min-height: 96px;
  }

  .section-header h2,
  .character-copy h2,
  .timeline-intro h2 {
    font-size: 26px;
  }

  .note-item,
  .timeline li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .timeline li::before,
  .timeline li::after {
    display: none;
  }

  .timeline li {
    border-bottom: 1px solid var(--border);
    padding-bottom: 22px;
  }

  .character-stack {
    min-height: 300px;
  }

  .character-stack::before {
    inset: 46px 0 30px;
  }

  .character-phrolova {
    right: 42%;
    width: 44%;
  }

  .character-erii {
    right: 0;
    width: 40%;
  }

  .quote-panel img {
    height: 360px;
  }

  .visual-plate {
    min-height: 250px;
  }

  .visual-plate img {
    width: min(56%, 220px);
    max-height: 220px;
  }

  .hero-visual figcaption {
    font-size: 12px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .button:hover,
  .button:focus-visible,
  .focus-card:hover,
  .project-card:hover,
  .publication-item:hover {
    transform: none;
  }
}

/* Character-led site system */

.theme-tianyi {
  --page-accent: var(--tianyi);
  --page-accent-strong: var(--tianyi-strong);
}

.theme-erii {
  --page-accent: var(--erii);
  --page-accent-strong: var(--erii-strong);
}

.theme-phrolova {
  --page-accent: var(--phrolova);
  --page-accent-strong: var(--phrolova-strong);
}

.site-header::before,
.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--tianyi) 0 33.333%,
    var(--erii) 33.333% 66.666%,
    var(--phrolova) 66.666%
  );
}

.site-header::before {
  top: 0;
}

.site-footer {
  position: relative;
}

.site-footer::before {
  top: 0;
}

.brand-mark {
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--page-accent) 40%, transparent);
}

.nav-panel > a::after {
  background: var(--page-accent);
}

.eyebrow,
.section-kicker,
.section-link {
  color: var(--page-accent-strong);
}

.tag {
  background: color-mix(in srgb, var(--surface) 88%, var(--page-accent) 12%);
}

.button.secondary:hover,
.button.secondary:focus-visible,
.button.ghost:hover,
.button.ghost:focus-visible {
  border-color: var(--page-accent);
  background: color-mix(in srgb, var(--page-accent) 9%, transparent);
}

.focus-card,
.project-card,
.publication-item,
.note-item {
  border-top-color: color-mix(in srgb, var(--page-accent) 42%, var(--border));
}

.focus-icon,
.focus-card-accent .focus-icon {
  background: color-mix(in srgb, var(--page-accent) 15%, var(--surface));
  color: var(--page-accent-strong);
}

.page-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 18%, color-mix(in srgb, var(--page-accent) 13%, transparent), transparent 28%),
    color-mix(in srgb, var(--surface-muted) 72%, transparent);
}

.page-hero::after {
  content: "";
  position: absolute;
  right: -72px;
  bottom: -96px;
  width: 280px;
  height: 280px;
  border: 1px solid color-mix(in srgb, var(--page-accent) 24%, transparent);
  border-radius: 50%;
  pointer-events: none;
}

.page-hero-grid {
  position: relative;
  z-index: 1;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
}

.page-hero-copy {
  min-width: 0;
}

.page-character-visual {
  --visual-min-height: 380px;
  position: relative;
  display: grid;
  grid-template-rows: 1fr auto;
  min-width: 0;
  min-height: var(--visual-min-height);
  margin: 0;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--page-accent) 36%, var(--border));
  border-radius: 16px;
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--page-accent) 13%, var(--surface)), var(--surface) 62%),
    var(--surface);
  box-shadow: var(--shadow);
  isolation: isolate;
}

.page-character-visual::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 20px;
  border: 1px solid color-mix(in srgb, var(--page-accent) 22%, transparent);
  border-radius: 12px;
  background:
    repeating-linear-gradient(
      0deg,
      transparent 0 31px,
      color-mix(in srgb, var(--page-accent) 8%, transparent) 31px 32px
    );
}

.page-character-visual::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 32px;
  right: 34px;
  width: 86px;
  height: 86px;
  border: 1px solid color-mix(in srgb, var(--page-accent) 34%, transparent);
  border-radius: 50%;
  box-shadow:
    28px 38px 0 -26px var(--page-accent),
    -30px 76px 0 -30px var(--page-accent);
}

.page-character-image {
  position: relative;
  z-index: 1;
  display: block;
  align-self: end;
  justify-self: center;
  width: min(90%, 420px);
  max-height: 420px;
  object-fit: contain;
  object-position: bottom center;
  filter: drop-shadow(0 18px 26px rgba(23, 32, 51, 0.16));
}

.visual-portrait {
  padding: 18px 18px 0;
}

.visual-portrait .page-character-image {
  align-self: stretch;
  width: 100%;
  max-height: none;
  min-height: 0;
  border-radius: 11px;
  object-fit: cover;
  object-position: center top;
  filter: saturate(0.92) contrast(0.98);
}

.page-character-visual figcaption {
  position: relative;
  z-index: 2;
  margin: 0;
  border-top: 1px solid color-mix(in srgb, var(--page-accent) 24%, var(--border));
  background: color-mix(in srgb, var(--surface) 91%, transparent);
  color: var(--text-muted);
  padding: 11px 16px 13px;
  font-size: 12px;
  line-height: 1.55;
  text-align: left;
  backdrop-filter: blur(12px);
}

.character-signature {
  --signature-color: var(--page-accent);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  border: 1px solid color-mix(in srgb, var(--signature-color) 36%, var(--border));
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 90%, var(--signature-color) 10%);
  color: var(--text);
  padding: 7px 12px 7px 9px;
}

.character-signature > span:last-child {
  display: grid;
  gap: 1px;
}

.character-signature strong,
.character-signature small {
  line-height: 1.15;
}

.character-signature strong {
  font-size: 13px;
}

.character-signature small {
  color: var(--text-muted);
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.character-mark {
  position: relative;
  display: block;
  width: 30px;
  height: 22px;
  border-radius: 7px;
  background:
    linear-gradient(
      180deg,
      transparent 0 5px,
      color-mix(in srgb, var(--signature-color) 64%, transparent) 5px 6px,
      transparent 6px 11px,
      color-mix(in srgb, var(--signature-color) 42%, transparent) 11px 12px,
      transparent 12px
    ),
    color-mix(in srgb, var(--signature-color) 12%, var(--surface));
}

.character-mark::after {
  content: "";
  position: absolute;
  right: 5px;
  top: 7px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--signature-color);
  transform: rotate(45deg);
}

.page-character-visual > .character-signature {
  position: absolute;
  z-index: 3;
  top: 16px;
  left: 16px;
}

.card-index {
  display: inline-flex;
  color: var(--page-accent-strong);
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.compact-callout {
  border: 1px solid color-mix(in srgb, var(--page-accent) 28%, var(--border));
  border-radius: 12px;
  background: color-mix(in srgb, var(--surface) 91%, var(--page-accent) 9%);
  padding: 22px;
}

.compact-callout h2,
.compact-callout h3 {
  margin: 8px 0;
}

.compact-callout p,
.section-note {
  color: var(--text-muted);
}

.section-note {
  max-width: 720px;
  margin: -12px 0 28px;
}

.empty-state {
  display: grid;
  justify-items: start;
  gap: 14px;
  max-width: 820px;
  border: 1px solid color-mix(in srgb, var(--page-accent) 30%, var(--border));
  border-radius: 14px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--page-accent) 10%, transparent), transparent 48%),
    var(--surface);
  padding: 34px;
  box-shadow: var(--shadow);
}

.empty-state h2,
.empty-state h3,
.empty-state p {
  margin: 0;
}

.empty-state p {
  color: var(--text-muted);
}

/* Homepage */

.home-hero {
  position: relative;
  min-height: calc(84vh - var(--header-height));
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 20%, color-mix(in srgb, var(--tianyi) 16%, transparent), transparent 26%),
    radial-gradient(circle at 8% 80%, color-mix(in srgb, var(--erii) 7%, transparent), transparent 24%);
}

.home-hero::before {
  content: "";
  position: absolute;
  left: -130px;
  top: 15%;
  width: 320px;
  height: 320px;
  border: 1px solid color-mix(in srgb, var(--tianyi) 18%, transparent);
  border-radius: 50%;
}

.home-hero .hero-grid {
  position: relative;
  z-index: 1;
}

.hero-note {
  max-width: 650px;
  margin: 12px 0 0;
  color: var(--text-muted);
}

.home-hero-visual {
  --visual-min-height: 540px;
}

.home-hero-visual picture {
  display: contents;
}

.home-hero-visual .page-character-image {
  width: min(94%, 480px);
  max-height: 500px;
}

.home-research {
  position: relative;
}

.home-research .focus-card {
  min-height: 276px;
}

.home-research .card-link {
  margin-top: 18px;
}

.feature-split {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(300px, 0.82fr);
  align-items: center;
  gap: 54px;
}

.feature-split-reverse {
  grid-template-columns: minmax(300px, 0.82fr) minmax(0, 1.18fr);
}

.feature-copy {
  min-width: 0;
}

.feature-copy > .character-signature {
  margin-bottom: 22px;
}

.feature-copy h2 {
  max-width: 700px;
  margin: 0;
  font-size: 38px;
  line-height: 1.18;
}

.feature-lede {
  max-width: 700px;
  margin: 18px 0 0;
  color: var(--text-muted);
  font-size: 17px;
}

.home-feature-phrolova {
  --page-accent: var(--phrolova);
  --page-accent-strong: var(--phrolova-strong);
}

.home-feature-erii {
  --page-accent: var(--erii);
  --page-accent-strong: var(--erii-strong);
}

.pathway-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 30px;
}

.pathway-card {
  min-width: 0;
  border: 1px solid color-mix(in srgb, var(--page-accent) 26%, var(--border));
  border-radius: 10px;
  background: var(--surface);
  padding: 18px;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.pathway-card:hover,
.pathway-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--page-accent);
  box-shadow: 0 14px 30px rgba(23, 32, 51, 0.07);
}

.pathway-card > span {
  color: var(--page-accent-strong);
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
  font-size: 12px;
  font-weight: 850;
}

.pathway-card h3 {
  margin: 12px 0 8px;
  font-size: 18px;
}

.pathway-card p {
  min-height: 72px;
  margin: 0 0 16px;
  color: var(--text-muted);
  font-size: 14px;
}

.feature-character {
  --visual-min-height: 520px;
}

.home-feature-erii .feature-character {
  --visual-min-height: 500px;
  max-width: 390px;
}

.home-feature-erii .visual-portrait .page-character-image {
  object-position: center 18%;
}

.memory-list {
  display: grid;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.memory-list li {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  border-bottom: 1px solid color-mix(in srgb, var(--page-accent) 22%, var(--border));
  padding: 0 0 12px;
}

.memory-list span {
  color: var(--page-accent-strong);
  font-family: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, monospace;
  font-size: 12px;
  text-transform: uppercase;
}

.memory-list strong {
  font-size: 15px;
}

.signature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.signature-card {
  --page-accent: var(--tianyi);
  min-height: 180px;
  border: 1px solid color-mix(in srgb, var(--page-accent) 30%, var(--border));
  border-radius: 12px;
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--page-accent) 10%, transparent), transparent 52%),
    var(--surface);
  padding: 22px;
}

.signature-card .character-signature {
  --signature-color: var(--page-accent);
}

.signature-card p {
  margin: 36px 0 0;
  color: var(--text-muted);
}

.signature-erii {
  --page-accent: var(--erii);
}

.signature-phrolova {
  --page-accent: var(--phrolova);
}

.closing-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  margin-top: 28px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--tianyi) 9%, transparent), transparent 36%),
    linear-gradient(270deg, color-mix(in srgb, var(--phrolova) 9%, transparent), transparent 36%),
    var(--surface);
  padding: 26px;
}

.closing-cta h2 {
  margin: 0;
  font-size: 25px;
}

.page-cv .page-character-visual {
  --visual-min-height: 260px;
}

.page-cv .page-character-image {
  align-self: center;
  width: 152px;
  max-height: 152px;
}

.page-cv .page-character-visual::before {
  inset: 14px;
}

@media (max-width: 1080px) {
  .feature-split,
  .feature-split-reverse {
    gap: 32px;
  }

  .pathway-grid {
    grid-template-columns: 1fr;
  }

  .pathway-card p {
    min-height: 0;
  }
}

@media (max-width: 860px) {
  .nav-panel {
    max-height: calc(100dvh - var(--header-height));
    overflow-y: auto;
    visibility: hidden;
  }

  .nav-panel.is-open {
    visibility: visible;
  }

  .page-hero-grid,
  .feature-split,
  .feature-split-reverse {
    grid-template-columns: 1fr;
  }

  .page-hero .page-character-visual {
    --visual-min-height: 330px;
  }

  .page-hero .page-character-image {
    max-height: 310px;
  }

  .feature-copy h2 {
    font-size: 32px;
  }

  .feature-character {
    --visual-min-height: 390px;
  }

  .home-feature-erii .feature-character {
    --visual-min-height: 420px;
    max-width: 100%;
  }

  .feature-split-reverse .feature-character {
    order: 2;
  }

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

@media (max-width: 640px) {
  .home-hero {
    min-height: auto;
  }

  .home-hero .hero-grid {
    gap: 18px;
  }

  .home-hero .hero-copy {
    display: contents;
  }

  .home-hero .eyebrow {
    order: 1;
    margin-bottom: 0;
  }

  .home-hero h1 {
    order: 2;
  }

  .home-hero .hero-summary {
    order: 3;
    margin-top: 0;
  }

  .home-hero .hero-actions {
    order: 4;
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin-top: 4px;
  }

  .home-hero .hero-actions .primary {
    grid-column: 1 / -1;
  }

  .home-hero-visual {
    --visual-min-height: 300px;
    order: 5;
  }

  .home-hero .hero-note {
    order: 6;
    margin-top: 0;
    font-size: 14px;
  }

  .home-hero .tag-row {
    order: 7;
    margin-top: 0;
  }

  .home-hero-visual .page-character-image {
    width: min(76%, 300px);
    max-height: 270px;
  }

  .page-character-visual > .character-signature {
    top: 11px;
    left: 11px;
  }

  .page-character-visual figcaption {
    padding: 9px 12px 11px;
  }

  .home-research .focus-card {
    min-height: 0;
  }

  .feature-copy h2 {
    font-size: 28px;
  }

  .feature-lede {
    font-size: 16px;
  }

  .feature-character,
  .home-feature-erii .feature-character {
    --visual-min-height: 340px;
  }

  .memory-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .signature-grid {
    grid-template-columns: 1fr;
  }

  .signature-card {
    min-height: 0;
  }

  .signature-card p {
    margin-top: 22px;
  }

  .closing-cta {
    align-items: stretch;
    flex-direction: column;
  }

  .closing-cta .button {
    width: 100%;
  }

  .empty-state {
    padding: 24px 20px;
  }

  .page-cv .page-character-visual {
    --visual-min-height: 220px;
  }
}

main [id] {
  scroll-margin-top: calc(var(--header-height) + 20px);
}

@media (max-width: 360px) {
  .home-hero .hero-actions {
    display: contents;
  }

  .home-hero .hero-actions .primary {
    order: 4;
    grid-column: 1;
    margin-top: 2px;
  }

  .home-hero-visual {
    order: 5;
  }

  .home-hero .hero-actions .secondary {
    order: 6;
  }

  .home-hero .hero-actions .ghost {
    order: 7;
  }

  .home-hero .hero-note {
    order: 8;
  }

  .home-hero .tag-row {
    order: 9;
  }
}

@media (max-height: 520px) and (max-width: 860px) {
  .nav-panel {
    max-height: calc(100dvh - var(--header-height));
    padding-bottom: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pathway-card:hover,
  .pathway-card:focus-within {
    transform: none;
  }
}