:root { color-scheme: light; }
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--fg);
}
code, pre, .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }

.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;
}

.muted { color: var(--muted); }
.dot { margin: 0 8px; opacity: 0.5; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 8px 12px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--panel); color: var(--fg); cursor: pointer; font-weight: 600;
}
.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn--ghost { background: transparent; }

.badge {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--panel); color: var(--muted);
  font-weight: 800; font-size: 12px; margin-left: 8px; vertical-align: middle;
}

.card { border: 1px solid var(--border); background: var(--panel); border-radius: 14px; padding: 16px; box-shadow: var(--shadow); }
.lead { font-size: 1.05rem; line-height: 1.5; color: var(--muted); }
.list { margin: 10px 0 0 18px; }

.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.chip { padding: 8px 10px; border-radius: 999px; border: 1px solid var(--border); background: var(--panel2); font-weight: 800; }

.field select { padding: 8px 10px; border-radius: 10px; border: 1px solid var(--border); background: var(--panel2); color: var(--fg); }

/* Theme tokens */
html {
  --bg: #ffffff;
  --fg: #0b3d91;
  --muted: #244d92;
  --panel: rgba(255, 255, 255, 0.88);
  --panel2: rgba(255, 255, 255, 1);
  --border: rgba(11, 61, 145, 0.18);
  --accent: #f89820;
  --accent-ink: #0b3d91;
  --shadow: 0 12px 32px rgba(11, 61, 145, 0.10);
  --code-bg: #f2f6ff;
}

html[data-theme="auto"][data-resolved-theme="light"],
html[data-theme="light"] {
  --bg: #ffffff;
  --fg: #0b3d91;
  --muted: #244d92;
  --panel: rgba(255, 255, 255, 0.88);
  --panel2: rgba(255, 255, 255, 1);
  --border: rgba(11, 61, 145, 0.18);
  --accent: #f89820;
  --accent-ink: #0b3d91;
  --shadow: 0 12px 32px rgba(11, 61, 145, 0.10);
  --code-bg: #f2f6ff;
}

html[data-theme="auto"][data-resolved-theme="dark"],
html[data-theme="dark"] {
  --bg: #ffffff;
  --fg: #0b3d91;
  --muted: #244d92;
  --panel: rgba(255, 255, 255, 0.88);
  --panel2: rgba(255, 255, 255, 1);
  --border: rgba(11, 61, 145, 0.18);
  --accent: #f89820;
  --accent-ink: #0b3d91;
  --shadow: 0 12px 32px rgba(11, 61, 145, 0.10);
  --code-bg: #f2f6ff;
}

html[data-theme="espresso"] {
  --bg: #ffffff;
  --fg: #0b3d91;
  --muted: #244d92;
  --panel: rgba(255, 255, 255, 0.88);
  --panel2: rgba(255, 255, 255, 1);
  --border: rgba(11, 61, 145, 0.18);
  --accent: #f89820;
  --accent-ink: #0b3d91;
  --shadow: 0 12px 32px rgba(11, 61, 145, 0.10);
  --code-bg: #f2f6ff;
}

/* Layout */
.app-header {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 16px; border-bottom: 1px solid var(--border);
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 12px; min-width: 260px; }
.brand__home {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand__home:hover { text-decoration: none; }
.brand__logoWrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.brand__logo { display: block; height: 40px; width: auto; }
.brand__text {
  font-weight: 900;
  letter-spacing: 0.2px;
  font-size: 1.18rem;
  color: var(--fg);
}
.brand__tag {
  font-size: 12px; color: var(--muted);
  border: 1px solid var(--border); background: var(--panel);
  padding: 3px 8px; border-radius: 999px;
}

.top-nav {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-inline-start: 20px;
  flex: 1 1 320px;
}
.top-nav a { padding: 8px 10px; border-radius: 10px; border: 1px solid transparent; color: var(--muted); font-weight: 800; }
.top-nav a.active, .top-nav a:hover { border-color: var(--border); background: var(--panel); color: var(--fg); text-decoration: none; }

.header-actions { display: flex; align-items: center; gap: 10px; }
.theme-select select,
.language-select select { padding: 8px 10px; border-radius: 10px; border: 1px solid var(--border); background: var(--panel); color: var(--fg); font-weight: 800; }
.theme-select[hidden] { display: none !important; }

.language-menu {
  position: relative;
}
.language-menu summary {
  list-style: none;
}
.language-menu summary::-webkit-details-marker { display: none; }
.language-menu__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--fg);
  cursor: pointer;
}
.language-menu__button:hover {
  background: var(--panel2);
}
.language-menu[open] .language-menu__button {
  border-color: color-mix(in oklab, var(--border) 55%, var(--accent));
}
.language-menu__panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  padding: 10px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--bg) 94%, transparent);
  box-shadow: var(--shadow);
}
.language-menu__panel .language-select,
.language-menu__panel .language-select select {
  display: block;
  width: 100%;
}

.app-shell { display: grid; grid-template-columns: 280px minmax(0, 1fr) 320px; gap: 12px; padding: 12px; }
.left-panel, .right-panel {
  border: 1px solid var(--border); background: var(--panel); border-radius: 14px; box-shadow: var(--shadow);
  overflow: hidden; min-height: calc(100vh - 130px);
}
.panel-title { padding: 12px 12px 10px; font-weight: 900; border-bottom: 1px solid var(--border); }
.panel-content { padding: 12px; }
.main-panel { min-height: calc(100vh - 130px); }
.main-content { display: flex; flex-direction: column; gap: 12px; }

.left-section + .left-section { margin-top: 14px; }
.left-section__title {
  font-weight: 900; color: var(--muted); font-size: 12px; text-transform: uppercase;
  letter-spacing: 0.08em; margin-bottom: 10px;
}
.left-links { display: flex; flex-direction: column; gap: 8px; }
.left-link {
  display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: center;
  padding: 10px 10px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--panel2);
}
.left-link:hover { text-decoration: none; border-color: color-mix(in oklab, var(--border) 60%, var(--accent)); }
.pill { padding: 3px 8px; border-radius: 999px; border: 1px solid var(--border); font-weight: 900; font-size: 12px; background: var(--panel); }

.app-footer {
  padding: 12px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  color: var(--muted);
  align-items: center;
}
.footer-rule {
  width: 100%;
  border-top: 1px solid var(--border);
  opacity: 0.9;
}
.footer-columns {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 18px;
  align-items: start;
}
.footer-column {
  display: grid;
  gap: 8px;
  align-content: start;
}
.footer-column__title {
  font-weight: 900;
  color: var(--fg);
}
.footer-column__links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-column__links a {
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
  line-height: 1.35;
}
.footer-column__links a:hover {
  color: var(--fg);
  text-decoration: underline;
}
.footer-links-header {
  font-size: 13px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  width: 100%;
  align-items: center;
}
.footer-version-links {
  font-size: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  justify-content: center;
  width: 100%;
  align-items: center;
  line-height: 1.5;
}
.footer-version-links a {
  color: var(--muted);
  text-decoration: none;
}
.footer-version-links a:hover {
  color: var(--fg);
  text-decoration: underline;
}
.footer-bottom {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 13px;
  line-height: 1.7;
}
.footer-bottom__legal {
  text-align: left;
  flex: 1 1 auto;
  justify-self: start;
  align-self: flex-start;
}
.footer-bottom__links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex: 0 1 auto;
  flex-wrap: wrap;
}
.footer-bottom a {
  color: var(--muted);
  text-decoration: none;
}
.footer-bottom a:hover {
  color: var(--fg);
  text-decoration: underline;
}
.footer-social {
  width: 100%;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 16px;
}
.footer-social__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  border: 1px solid color-mix(in oklab, var(--border) 74%, #0b3d91 26%);
  background: color-mix(in oklab, var(--panel2) 90%, white 10%);
  color: var(--muted);
  text-decoration: none;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease, color 140ms ease;
}
.footer-social__link:hover {
  transform: translateY(-1px);
  color: var(--fg);
  border-color: color-mix(in oklab, #f06b28 56%, #0b3d91 44%);
  background: color-mix(in oklab, #f06b28 10%, var(--panel2));
  text-decoration: none;
}
.footer-social__link svg {
  width: 22px;
  height: 22px;
}
.footer-legal {
  font-weight: 700;
  color: var(--muted);
  text-align: center;
}
.footer-disclaimer { font-size: 12px; line-height: 1.5; color: color-mix(in oklab, var(--muted) 88%, var(--text)); text-align: center; }
.footer-disclaimer--block {
  width: 100%;
}
.footer-sep { opacity: 0.6; }

.static-footer {
  margin-top: 48px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
}
.static-footer .footer-links-header {
  justify-content: center;
  font-size: 14px;
  flex-wrap: wrap;
}
.static-footer .footer-version-links {
  margin-top: 2px;
}

@media (max-width: 840px) {
  .app-header {
    align-items: flex-start;
  }
  .top-nav {
    margin-inline-start: 0;
    order: 3;
    flex: 1 1 100%;
    flex-wrap: wrap;
  }
  .header-actions {
    margin-left: auto;
  }
  .app-shell {
    grid-template-columns: 1fr;
  }
  .left-panel, .right-panel, .main-panel {
    min-height: auto;
  }
}
@media (max-width: 520px) {
  .footer-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-bottom__links {
    justify-content: flex-start;
  }
}

.hero h1 { margin: 0; }
.home-hero {
  overflow: hidden;
  background:
    radial-gradient(circle at top right, color-mix(in oklab, var(--accent) 18%, transparent), transparent 36%),
    linear-gradient(180deg, color-mix(in oklab, var(--panel2) 92%, transparent), var(--panel));
}

.home-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: 18px;
  align-items: stretch;
}

.home-hero__copy {
  display: grid;
  gap: 14px;
  align-content: start;
}

.home-version-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.home-version-switch__label {
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.home-version-switch__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 32px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 84%, white 16%);
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  text-decoration: none;
}

.home-version-switch__link:hover,
.home-version-switch__link.active {
  color: var(--fg);
  border-color: color-mix(in oklab, var(--border) 52%, var(--accent));
  background: color-mix(in oklab, var(--panel2) 70%, var(--accent) 10%);
  text-decoration: none;
}

.home-hero__copy h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.05;
  max-width: 12ch;
}

.home-hero__art {
  display: grid;
  gap: 14px;
  align-content: start;
}

.home-hero__brandmark {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: center;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background:
    radial-gradient(circle at top left, color-mix(in oklab, var(--accent) 12%, transparent), transparent 42%),
    linear-gradient(180deg, color-mix(in oklab, var(--panel2) 90%, white 10%), var(--panel));
  box-shadow: var(--shadow);
}

.home-hero__mascot {
  display: block;
  width: min(100%, 132px);
  height: auto;
}

.home-hero__brandcopy {
  display: grid;
  gap: 8px;
}

.home-hero__brandcopy strong {
  color: var(--fg);
  font-size: clamp(1.1rem, 1.6vw, 1.45rem);
  line-height: 1.1;
}

.home-hero__brandcopy span {
  color: var(--muted);
  line-height: 1.55;
}

.home-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 6px;
}

.home-stat {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 85%, white 15%);
}

.home-stat__value {
  color: var(--fg);
  font-size: clamp(1rem, 2vw, 1.45rem);
  font-weight: 900;
  line-height: 1.1;
}

.home-stat__label {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.home-routeboard {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: color-mix(in oklab, var(--bg) 88%, var(--panel2));
  padding: 18px;
  box-shadow: var(--shadow);
}

.home-routeboard__title {
  color: var(--fg);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.home-routeboard__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.home-routeboard__item,
.home-routeboard__wide {
  display: grid;
  gap: 6px;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel2) 88%, transparent);
  text-decoration: none;
}

.home-routeboard__item:hover,
.home-routeboard__wide:hover,
.home-vertical:hover,
.landmark-card:hover {
  text-decoration: none;
  border-color: color-mix(in oklab, var(--border) 55%, var(--accent));
  transform: translateY(-1px);
}

.home-routeboard__meta,
.home-vertical__meta {
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.home-routeboard__item strong,
.home-routeboard__wide strong {
  color: var(--fg);
  font-size: 1rem;
}

.home-routeboard__wide {
  margin-top: 10px;
}

.home-verticals {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.home-vertical {
  display: grid;
  gap: 10px;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease;
}

.home-vertical h2,
.home-section-head h2,
.home-landmarks h2 {
  margin: 0;
}

.home-vertical p,
.pathway-card p,
.landmark-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.hero__eyebrow {
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.hero-actions { display: flex; gap: 10px; margin-top: 14px; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.architecture-showcase {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.25fr);
  gap: 16px;
  align-items: center;
  margin-top: 14px;
}

.architecture-showcase h2 {
  margin: 0;
}

.architecture-showcase__copy {
  display: grid;
  gap: 12px;
}

.architecture-showcase__figure {
  display: block;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, color-mix(in oklab, var(--panel2) 90%, transparent), var(--panel));
  box-shadow: var(--shadow);
}

.architecture-showcase__figure:hover {
  text-decoration: none;
  border-color: color-mix(in oklab, var(--border) 55%, var(--accent));
}

.architecture-diagram {
  display: block;
  width: 100%;
  height: auto;
}

.compatibility-preview {
  display: grid;
  gap: 16px;
}

.compatibility-preview__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
}

.compatibility-preview__head h2 {
  margin: 0;
}

.compatibility-preview__actions {
  display: flex;
  align-items: center;
}

.compatibility-preview__table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: linear-gradient(180deg, color-mix(in oklab, var(--panel2) 92%, transparent), var(--panel));
}

.compatibility-preview__table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
}

.compatibility-preview__table th,
.compatibility-preview__table td {
  padding: 14px 16px;
  text-align: left;
  border-top: 1px solid color-mix(in oklab, var(--border) 82%, transparent);
}

.compatibility-preview__table thead th {
  border-top: 0;
  color: var(--fg);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: color-mix(in oklab, var(--panel2) 88%, white 12%);
}

.compatibility-preview__table tbody td {
  color: var(--muted);
  line-height: 1.55;
}

.compatibility-preview__table tbody td:first-child {
  color: var(--fg);
  font-weight: 800;
}

.home-pathways {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pathway-card {
  display: grid;
  gap: 12px;
  align-content: start;
}

.home-landmarks {
  display: grid;
  gap: 16px;
}

.home-section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 14px;
}

.home-landmarks__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.landmark-card {
  display: grid;
  gap: 10px;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, color-mix(in oklab, var(--panel2) 92%, transparent), var(--panel));
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease;
}

.landmark-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--fg);
}

.landmark-card__year {
  color: var(--accent);
  font-weight: 900;
  letter-spacing: 0.04em;
}

.landmark-card__highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.home-bottom-grid {
  align-items: start;
}

.environment-era-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 12px; }
.environment-card {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, color-mix(in oklab, var(--panel2) 88%, transparent), var(--panel));
  border-radius: 14px;
  padding: 14px;
}
.environment-card__head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}
.environment-card__head h3 { margin: 2px 0 0; }
.environment-card__eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.environment-points { display: grid; gap: 8px; margin-top: 12px; color: var(--muted); }
.environment-fit {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  color: var(--fg);
}

.environment-stack-list { display: grid; gap: 12px; margin-top: 12px; }
.environment-stack {
  border: 1px solid var(--border);
  background: var(--panel2);
  border-radius: 14px;
  padding: 14px;
}
.environment-stack__title {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 12px;
}
.environment-stack__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
}
.environment-stack__grid div {
  display: grid;
  gap: 4px;
  color: var(--muted);
}
.environment-stack__grid strong { color: var(--fg); }

.environment-track-list { display: grid; gap: 12px; margin-top: 12px; }
.environment-track {
  border: 1px solid var(--border);
  background: var(--panel2);
  border-radius: 14px;
  padding: 14px;
}
.environment-track__head h3 { margin: 0; }
.environment-track__head p { margin: 8px 0 0; }
.environment-track__items { display: grid; gap: 10px; margin-top: 14px; }
.environment-track__item {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.environment-track__item:first-child { border-top: none; padding-top: 0; }
.environment-track__period {
  font-weight: 800;
  color: var(--accent);
}
.environment-track__label {
  font-weight: 900;
  color: var(--fg);
  margin-bottom: 4px;
}


/* About: Glossary + Keywords */
.glossary-grid { margin-top: 10px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.glossary-card { border: 1px solid var(--border); background: var(--panel2); border-radius: 12px; padding: 12px; }
.glossary-term { font-weight: 900; margin-bottom: 6px; color: var(--text); }

.keyword-controls { margin-top: 10px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.field-input {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--fg);
}
.field-input:focus { outline: 2px solid color-mix(in oklab, var(--accent) 55%, transparent); outline-offset: 2px; }

.keyword-list { margin-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.keyword-item { border: 1px solid var(--border); background: var(--panel2); border-radius: 12px; padding: 10px 12px; }
.keyword-item summary { cursor: pointer; display: flex; gap: 10px; align-items: baseline; list-style: none; }
.keyword-item summary::-webkit-details-marker { display: none; }
.kw { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-weight: 900; color: var(--text); }
.kw-kind {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  text-transform: lowercase;
}
.keyword-body { padding-top: 10px; display: grid; gap: 10px; }
.keyword-subtitle {
  font-weight: 900;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.keyword-history { margin: 0; padding-left: 18px; color: var(--muted); }

.note { border: 1px solid var(--border); background: var(--panel2); border-radius: 12px; padding: 12px; }
.note__title { font-weight: 900; margin-bottom: 6px; }

.table { margin-top: 12px; display: grid; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.row { display: grid; grid-template-columns: 200px 140px 1fr; gap: 12px; padding: 10px 12px; border-top: 1px solid var(--border); }
.row.head { font-weight: 900; background: var(--panel2); border-top: none; }
.row:hover:not(.head) { background: color-mix(in oklab, var(--panel2) 70%, var(--accent) 8%); text-decoration: none; }

.timeline { margin-top: 10px; display: flex; flex-direction: column; gap: 8px; }
.timeline-item {
  display: grid; grid-template-columns: 240px 1fr; gap: 12px;
  padding: 12px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--panel2);
}
.timeline-item:hover { text-decoration: none; border-color: color-mix(in oklab, var(--border) 60%, var(--accent)); }

.version-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.version-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.markdown p { color: var(--muted); line-height: 1.55; }

/* Code explorer */
.code-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.code-shell { margin-top: 10px; display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 12px; }
.code-tree { border: 1px solid var(--border); border-radius: 12px; background: var(--panel2); padding: 10px; overflow: auto; max-height: 70vh; }
.code-view { border: 1px solid var(--border); border-radius: 12px; background: var(--panel2); padding: 12px; overflow: auto; max-height: 70vh; }
.code-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.path { color: var(--muted); }
.code { border: 1px solid var(--border); border-radius: 12px; background: var(--code-bg); padding: 12px; overflow: auto; line-height: 1.45; font-size: 13px; }

.tree { display: flex; flex-direction: column; gap: 6px; }
.tree-dir summary { cursor: pointer; padding: 6px 8px; border-radius: 10px; font-weight: 800; color: var(--muted); }
.tree-dir summary:hover { background: color-mix(in oklab, var(--panel2) 70%, var(--accent) 6%); }
.tree-file { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: 10px; border: 1px solid transparent; }
.tree-file:hover { text-decoration: none; background: color-mix(in oklab, var(--panel2) 70%, var(--accent) 6%); }
.tree-file.active { border-color: color-mix(in oklab, var(--border) 60%, var(--accent)); background: color-mix(in oklab, var(--panel2) 70%, var(--accent) 8%); }
.tree-ico { width: 18px; }

@media (max-width: 1100px) {
  .app-shell { grid-template-columns: 260px minmax(0, 1fr); }
  .right-panel { display: none; }
  .grid { grid-template-columns: 1fr; }
  .home-hero__inner,
  .home-verticals,
  .home-pathways,
  .home-landmarks__grid { grid-template-columns: 1fr; }
  .home-stats { grid-template-columns: 1fr; }
  .home-section-head { align-items: flex-start; flex-direction: column; }
  .architecture-showcase { grid-template-columns: 1fr; }
  .compatibility-preview__head { flex-direction: column; align-items: flex-start; }
  .home-hero__brandmark { grid-template-columns: 1fr; text-align: center; }
  .home-hero__mascot { margin: 0 auto; }
  .glossary-grid { grid-template-columns: 1fr; }
  .environment-era-grid { grid-template-columns: 1fr; }
  .environment-stack__grid { grid-template-columns: 1fr; }
}
@media (max-width: 840px) {
  .app-shell { grid-template-columns: 1fr; }
  .left-panel { min-height: auto; }
  .brand__tag { display: none; }
  .top-nav { display: none; }
  .version-grid { grid-template-columns: 1fr; }
  .code-shell { grid-template-columns: 1fr; }
  .environment-track__item { grid-template-columns: 1fr; gap: 6px; }
}


.hero__inner { display: grid; grid-template-columns: 1fr 320px; gap: 14px; align-items: center; }
.hero__art { display: flex; justify-content: flex-end; }
.hero-mascot { width: 300px; height: auto; max-width: 100%; }
@media (max-width: 1000px) {
  .hero__inner { grid-template-columns: 1fr 240px; }
  .hero-mascot { width: 220px; height: auto; }
}

@media (max-width: 840px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__art { justify-content: flex-start; }
  .hero-mascot { width: 200px; height: auto; }
  .home-routeboard__grid { grid-template-columns: 1fr; }
}




.brand__logoWrap { display: flex; align-items: center; }