:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --accent: #0f766e;
  --accent-2: #2563eb;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 20px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  text-rendering: optimizeLegibility;
}

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

a:hover,
a:focus-visible {
  text-decoration: underline;
}

img,
svg {
  max-width: 100%;
  display: block;
}

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

.section {
  padding: 5rem 0;
}

.alt {
  background: var(--bg-alt);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

.header-inner {
  min-height: 4.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 2.5rem;
  height: 2.5rem;
}

.brand-text {
  font-size: 1.1rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.95rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
}

h1,
h2,
h3 {
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-top: 0;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.6rem);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  margin-bottom: 0.75rem;
}

h3 {
  font-size: 1.15rem;
  margin-bottom: 1rem;
}

.lead {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 60ch;
  margin-bottom: 1.5rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.875rem;
  padding: 0.75rem 1.1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.button-secondary {
  color: var(--text);
  border-color: var(--border);
  background: #fff;
}

.hero-card,
.resource-card,
.checklist-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 1.5rem;
}

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

.resource-card {
  padding: 1.25rem;
}

.resource-card ul,
.check-list {
  margin: 0;
  padding-left: 1.2rem;
}

.resource-card li + li,
.check-list li + li {
  margin-top: 0.65rem;
}

.section-heading {
  margin-bottom: 1.5rem;
}

.pill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.pill {
  padding: 0.8rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
}

.checklist-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 1.5rem;
  align-items: start;
}

.checklist-card {
  padding: 1.5rem;
}

.about {
  max-width: 70ch;
}

.site-footer {
  padding: 1.5rem 0 2rem;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 100;
  background: #fff;
  border: 2px solid var(--accent);
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
}

:focus-visible {
  outline: 3px solid rgba(15, 118, 110, 0.25);
  outline-offset: 3px;
}

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

@media (max-width: 640px) {
  .section {
    padding: 4rem 0;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.9rem 0;
  }

  .site-nav {
    gap: 0.75rem 1rem;
  }

  h1 {
    font-size: clamp(2.2rem, 11vw, 3.4rem);
  }
}