:root {
  color-scheme: light;
  --page: #fffffb;
  --ink: #141414;
  --muted: #55534d;
  --faint: #efede4;
  --line: #d9d5c8;
  --link: #0645ad;
  --visited: #5a3286;
  --accent: #8f2b18;
  --accent-soft: #f3e1d1;
  --glow: rgba(143, 43, 24, 0.11);
  --button-ink: #fffffb;
}

[data-theme="black"] {
  color-scheme: dark;
  --page: #090909;
  --ink: #eeeeea;
  --muted: #b7b2a7;
  --faint: #171717;
  --line: #34322d;
  --link: #8ab4ff;
  --visited: #c59aff;
  --accent: #e29b75;
  --accent-soft: #241712;
  --glow: rgba(138, 180, 255, 0.11);
  --button-ink: #080808;
}

[data-theme="night"] {
  color-scheme: dark;
  --page: #080000;
  --ink: #ff6b5f;
  --muted: #c2473d;
  --faint: #150101;
  --line: #4c0805;
  --link: #ff3b30;
  --visited: #d31812;
  --accent: #ff6b5f;
  --accent-soft: #240302;
  --glow: rgba(255, 59, 48, 0.12);
  --button-ink: #170000;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 86% 8%, var(--glow), transparent 30rem),
    linear-gradient(180deg, var(--page), color-mix(in srgb, var(--page) 82%, var(--faint))),
    var(--page);
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  font-size: 18px;
  line-height: 1.58;
  letter-spacing: 0;
}

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.13em;
}

a:visited {
  color: var(--visited);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

button {
  font: inherit;
}

.plain-page {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 72px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: 12px;
  padding: 4px 8px;
  color: var(--button-ink);
  background: var(--accent);
  transform: translateY(-140%);
}

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

.plain-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.plain-nav a,
.theme-links button {
  min-height: 32px;
}

.plain-nav strong {
  margin-right: 10px;
  color: var(--ink);
}

.plain-links,
.plain-tools,
.theme-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: baseline;
}

.plain-tools {
  justify-content: flex-end;
}

.plain-tools span {
  color: var(--muted);
}

.theme-links button {
  padding: 0;
  border: 0;
  color: var(--link);
  background: transparent;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.13em;
}

.theme-links button[aria-pressed="true"] {
  color: var(--button-ink);
  background: var(--accent);
  text-decoration: none;
}

.classic-topbar {
  min-height: 76px;
  padding-bottom: 12px;
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 22px;
  align-items: center;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.classic-mark {
  width: 52px;
  height: 52px;
  display: inline-grid;
  place-items: center;
  border: 3px solid #090909;
  border-radius: 10px;
  color: #090909;
  background: #ffffff;
  font-weight: 800;
  font-size: 1.35rem;
  line-height: 1;
  text-decoration: none;
  overflow: hidden;
}

.classic-mark:visited {
  color: #090909;
}

[data-theme="black"] .classic-mark {
  border-color: #f7f7f3;
  color: #f7f7f3;
  background: #080808;
}

[data-theme="black"] .classic-mark:visited {
  color: #f7f7f3;
}

[data-theme="night"] .classic-mark {
  border-color: var(--accent);
  color: var(--accent);
  background: #080000;
}

[data-theme="night"] .classic-mark:visited {
  color: var(--accent);
}

.classic-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  justify-content: center;
  color: var(--muted);
}

.classic-nav-links a {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  text-decoration: none;
}

.classic-nav-links a:visited {
  color: var(--muted);
}

.classic-nav-links a:hover {
  color: var(--link);
}

.classic-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
}

.mobile-menu {
  display: none;
}

.mobile-menu summary {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: color-mix(in srgb, var(--page) 88%, var(--faint));
  cursor: pointer;
  list-style: none;
}

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

.mobile-menu[open] summary {
  color: var(--button-ink);
  background: var(--accent);
}

.mobile-menu-panel {
  width: max-content;
  max-width: calc(100vw - 24px);
  padding: 12px;
  position: absolute;
  top: 58px;
  right: 0;
  z-index: 10;
  display: grid;
  gap: 10px;
  justify-items: start;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--page) 94%, var(--faint));
  box-shadow: 0 18px 48px color-mix(in srgb, var(--ink) 12%, transparent);
}

.mobile-menu-links {
  max-width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
}

.mobile-menu-links a {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  text-decoration: none;
}

.classic-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--page) 86%, var(--faint));
  overflow: hidden;
}

.classic-switch a,
.classic-switch button {
  min-height: 38px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font: inherit;
  font-size: 0.86rem;
  text-decoration: none;
  white-space: nowrap;
}

.classic-switch a:last-child,
.classic-switch button:last-child {
  border-right: 0;
}

.classic-switch a:visited {
  color: var(--muted);
}

.classic-switch .is-current,
.classic-switch a.is-current:link,
.classic-switch a.is-current:visited,
.classic-switch button[aria-pressed="true"] {
  color: var(--button-ink);
  -webkit-text-fill-color: var(--button-ink);
  background: var(--accent);
}

.spectrum-divider {
  height: 12px;
  width: 100%;
  border: 1px solid var(--line);
  background:
    linear-gradient(90deg, #354fbd, #4ebbdc 27%, #7abf6b 47%, #e0bf55 66%, #d56d50 84%, #9c60bd);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--page) 45%, transparent);
}

[data-theme="night"] .spectrum-divider {
  filter: saturate(0.75) brightness(0.82);
}

.intro {
  padding: 52px 0 34px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(190px, 240px);
  gap: 36px;
  align-items: center;
}

.landing {
  min-height: calc(100svh - 150px);
  align-content: center;
}

.intro h1 {
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 4.8rem);
  line-height: 1;
  letter-spacing: 0;
}

.hello {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 1.05rem;
  font-weight: 700;
}

.intro-text {
  margin: 18px 0 0;
  max-width: 690px;
  text-align: justify;
}

.portrait {
  margin: 0;
  display: grid;
  gap: 7px;
}

.portrait img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  display: block;
  border: 1px solid var(--line);
  border-radius: 2px;
  object-fit: cover;
}

.quick-links {
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  list-style: none;
}

.identity-links {
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
}

.identity-links a {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--accent);
  background: color-mix(in srgb, var(--page) 88%, var(--faint));
  text-decoration: none;
}

.identity-links a:hover {
  border-color: var(--accent);
  color: var(--button-ink);
  background: var(--accent);
}

.identity-links svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.bio-contact {
  margin-top: 24px;
}

.bio-contact p {
  margin: 0 0 8px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.95rem;
}

.quiet-strip {
  margin: 4px 0 22px;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 72px;
  gap: 14px;
  align-items: center;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.78rem;
}

.quiet-strip::before,
.quiet-strip::after {
  content: "";
  height: 1px;
  background: var(--line);
}

.spectrum-rule {
  height: 10px;
  border: 1px solid var(--line);
  background:
    linear-gradient(90deg, #354fbd, #4ebbdc 27%, #7abf6b 47%, #e0bf55 66%, #d56d50 84%, #9c60bd);
}

[data-theme="night"] .spectrum-rule {
  background:
    linear-gradient(90deg, #240000, #600704 27%, #ad120b 55%, #ff3b30 72%, #7a0805);
}

.section {
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.section h2 {
  margin: 0 0 12px;
  font-size: 1.35rem;
  line-height: 1.25;
}

.section p {
  max-width: 760px;
}

.plain-list {
  margin: 0;
  padding-left: 1.2rem;
}

.plain-list li + li {
  margin-top: 8px;
}

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

.paper-list li {
  padding: 14px 0;
  border-top: 1px solid var(--faint);
}

.paper-list li:first-child {
  border-top: 0;
}

.paper-title {
  display: block;
  font-weight: 700;
}

.paper-meta,
.app-meta {
  display: block;
  color: var(--muted);
  font-size: 0.95rem;
}

.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-top: 3px;
  font-size: 0.95rem;
}

.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.compact-links {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  list-style: none;
}

.compact-links li {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr);
  gap: 12px;
}

.compact-links strong {
  color: var(--muted);
  font-weight: 400;
}

.app-table {
  width: 100%;
  border-collapse: collapse;
}

.app-table th,
.app-table td {
  padding: 8px 8px 8px 0;
  border-top: 1px solid var(--faint);
  text-align: left;
  vertical-align: top;
}

.app-table th {
  color: var(--muted);
  font-weight: 400;
}

.language-note {
  margin: 12px 0 0;
  color: var(--muted);
}

.footer {
  padding-top: 28px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 720px) {
  body {
    font-size: 17px;
  }

  .plain-page {
    width: min(100% - 24px, 900px);
    padding-top: 18px;
  }

  .plain-nav,
  .plain-tools {
    justify-content: flex-start;
  }

  .classic-topbar {
    grid-template-columns: auto auto;
    gap: 12px;
    justify-content: space-between;
    min-height: auto;
  }

  .classic-nav-links,
  .classic-actions {
    display: none;
  }

  .mobile-menu {
    display: block;
    justify-self: end;
  }

  .classic-switch {
    max-width: 100%;
    overflow-x: auto;
  }

  .classic-switch a,
  .classic-switch button {
    min-height: 36px;
    padding: 0 10px;
  }

  .mobile-menu-panel .classic-switch {
    width: max-content;
    max-width: 100%;
    justify-self: start;
    overflow-x: auto;
  }

  .mobile-menu-panel .classic-switch a,
  .mobile-menu-panel .classic-switch button {
    padding: 0 9px;
    font-size: 0.82rem;
  }

  .intro,
  .two-column {
    grid-template-columns: 1fr;
  }

  .intro {
    grid-template-columns: minmax(0, 1fr) minmax(88px, 30vw);
    gap: 14px;
    padding-top: 34px;
    align-items: start;
  }

  .intro > div {
    display: contents;
  }

  .hello,
  .intro-text,
  .bio-contact {
    grid-column: 1 / -1;
  }

  .intro h1 {
    grid-column: 1;
    max-width: 100%;
    font-size: clamp(2.25rem, 10vw, 3.15rem);
    line-height: 0.98;
    overflow-wrap: anywhere;
  }

  .portrait {
    grid-column: 2;
    grid-row: 2;
    justify-self: end;
  }

  .landing {
    min-height: auto;
  }

  .portrait {
    width: min(124px, 30vw);
  }

  .portrait img {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
  }

  .app-table,
  .app-table tbody,
  .app-table tr,
  .app-table th,
  .app-table td {
    display: block;
  }

  .app-table th {
    padding-bottom: 0;
  }

  .app-table td {
    padding-top: 0;
    border-top: 0;
  }

  .quiet-strip {
    grid-template-columns: 40px minmax(0, 1fr) 40px;
  }

  .compact-links li {
    grid-template-columns: 1fr;
    gap: 0;
  }
}