/* Lightweight styles for the .site lab version */
:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --line: #dbe3ee;
  --brand: #0b5fff;
  --brand-ink: #ffffff;
  --accent: #e8f0ff;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  --radius: 14px;
  --shell: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, #eef4ff 0, transparent 45%),
    radial-gradient(circle at 100% 10%, #eefaf5 0, transparent 42%),
    var(--bg);
  line-height: 1.55;
}

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

a:hover {
  text-decoration: underline;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}

.skip-link:focus {
  left: 8px;
  top: 8px;
  background: #fff;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  z-index: 10;
}

.shell {
  width: min(calc(100% - 2rem), var(--shell));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: rgba(246, 248, 251, 0.85);
  border-bottom: 1px solid rgba(219, 227, 238, 0.8);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #0b5fff, #26b0ff);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.top-nav {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.top-nav a {
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  color: var(--text);
}

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

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
  padding: 2rem 0 1rem;
}

.hero-card,
.panel,
.callout {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 1rem;
}

.hero h1,
.page-head h1 {
  line-height: 1.12;
  margin: 0.25rem 0 0.75rem;
  font-size: clamp(2rem, 3.2vw, 3rem);
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.lede {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 70ch;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.7rem 0.95rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

.btn:hover {
  text-decoration: none;
  border-color: #bfd0ec;
}

.btn-primary {
  background: var(--brand);
  color: var(--brand-ink);
  border-color: var(--brand);
}

.btn-primary:hover {
  background: #0853e5;
  border-color: #0853e5;
}

.section {
  padding: 1.1rem 0 1.5rem;
}

.section-head {
  margin-bottom: 0.9rem;
}

.section-head h2 {
  margin: 0 0 0.3rem;
  font-size: 1.35rem;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.category-grid,
.track-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 0.9rem;
}

.panel {
  padding: 1rem;
}

.panel h3,
.panel h2 {
  margin-top: 0;
  margin-bottom: 0.45rem;
}

.panel p {
  margin: 0 0 0.6rem;
}

.meta {
  color: var(--muted);
  font-size: 0.88rem;
}

.mini-list,
.panel ul {
  margin: 0.5rem 0 0;
  padding-left: 1.1rem;
}

.mini-list li,
.panel li {
  margin: 0.3rem 0;
}

.page-head {
  padding: 1.5rem 0 0.5rem;
}

.stack-block + .stack-block {
  margin-top: 1.2rem;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.85rem;
}

.guide-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.95rem;
  box-shadow: var(--shadow);
}

.guide-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}

.guide-card p {
  margin: 0 0 0.45rem;
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: 1rem;
}

.flow h2 {
  margin-top: 0;
}

.flow h2 + p,
.flow h2 + ul,
.flow h2 + ol {
  margin-top: 0.35rem;
}

.flow ul,
.flow ol {
  padding-left: 1.1rem;
}

.side-stack {
  display: grid;
  gap: 0.9rem;
  align-content: start;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  background: var(--accent);
  color: #17408b;
  border: 1px solid #d8e5ff;
  font-size: 0.82rem;
}

.track-steps {
  margin: 0.4rem 0 0;
  padding-left: 1.1rem;
}

.track-flow {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.track-step-row {
  padding: 0.85rem 1rem;
}

.compact h2 {
  margin-bottom: 0.25rem;
}

.callout {
  padding: 1rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 1rem;
  background: rgba(255, 255, 255, 0.75);
}

.footer-grid {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 0 1.5rem;
  color: var(--muted);
}

.footer-grid p {
  margin: 0;
}

@media (max-width: 900px) {
  .hero,
  .two-col {
    grid-template-columns: 1fr;
  }

  .top-nav {
    justify-content: flex-end;
  }
}

@media (max-width: 640px) {
  .header-row {
    align-items: flex-start;
    padding: 0.65rem 0;
    flex-direction: column;
  }

  .top-nav {
    width: 100%;
    overflow-x: auto;
  }

  .hero {
    padding-top: 1rem;
  }

  .hero h1,
  .page-head h1 {
    font-size: 1.8rem;
  }
}