:root {
  --bg: #fbf6ef;
  --surface: #fffaf4;
  --surface-strong: #ffffff;
  --ink: #281923;
  --muted: #6f5d65;
  --brand: #7a3651;
  --brand-dark: #57223a;
  --accent: #d8a75f;
  --line: #eadfd3;
  --shadow: 0 16px 40px rgba(73, 45, 36, 0.12);
  --radius: 8px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}
a { color: var(--brand-dark); }
.skip-link {
  position: absolute;
  left: -999px;
  top: 1rem;
  background: var(--ink);
  color: white;
  padding: .75rem 1rem;
  z-index: 20;
}
.skip-link:focus { left: 1rem; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251, 246, 239, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.site-nav {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: .85rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.site-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.site-logo img {
  display: block;
  width: auto;
  height: clamp(54px, 7vw, 88px);
  object-fit: contain;
}
.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: .35rem;
}
.product-status {
  color: var(--brand);
  font-weight: 800;
  margin-top: auto;
}
.nav-links a,
.footer a {
  border-radius: 999px;
  color: var(--ink);
  font-weight: 700;
  padding: .55rem .78rem;
  text-decoration: none;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  background: #f0e2d4;
  color: var(--brand-dark);
}
.hero,
.section,
.lesson-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}
.hero { padding: 4rem 0 2rem; }
.hero-card {
  background: linear-gradient(135deg, #fffaf4, #f5e8dd);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(2rem, 5vw, 4rem);
}
.eyebrow,
.tag {
  color: var(--brand);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
h1,
h2,
h3 { line-height: 1.15; }
h1 {
  font-size: clamp(2.25rem, 5vw, 4.6rem);
  margin: .25rem 0 1rem;
}
h2 { font-size: clamp(1.45rem, 3vw, 2.25rem); }
p { max-width: 72ch; }
.lead {
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 1.4rem;
}
.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 800;
  padding: .78rem 1.05rem;
  text-decoration: none;
}
.button {
  background: var(--brand);
  color: white;
  box-shadow: 0 10px 22px rgba(122, 54, 81, .18);
}
.button-secondary {
  background: #f1e3d5;
  color: var(--brand-dark);
}
.section { padding: 2rem 0; }
.section-header {
  margin-bottom: 1.25rem;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.card,
.lesson-article {
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 28px rgba(63, 44, 34, .08);
}
.card {
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
}
.card h2,
.card h3 { margin: .2rem 0 .35rem; }
.card .button { margin-top: auto; align-self: flex-start; }
.split-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.lesson-shell {
  padding: 3rem 0;
}
.lesson-article {
  padding: clamp(1.5rem, 4vw, 3rem);
}
.lesson-section {
  border-top: 1px solid var(--line);
  margin-top: 1.7rem;
  padding-top: 1.2rem;
}
.lesson-section li { margin: .35rem 0; }
.lesson-callout,
.lesson-takeaway {
  border-left: 4px solid var(--accent);
  background: #fff6e7;
  border-radius: var(--radius);
  margin: 1.4rem 0;
  padding: 1rem 1.1rem;
}
.lesson-takeaway {
  background: #f6ecef;
  border-left-color: var(--brand);
}
.footer {
  width: min(1120px, calc(100% - 32px));
  margin: 3rem auto 0;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0 2.5rem;
}
.footer-brand { font-weight: 800; margin-bottom: 0; }
.footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: .25rem;
}
@media (max-width: 760px) {
  .site-nav,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }
  .nav-links {
    justify-content: flex-start;
  }
  .nav-links a,
  .footer a {
    padding: .45rem .62rem;
  }
  .card-grid,
  .split-grid {
    grid-template-columns: 1fr;
  }
  .hero { padding-top: 2rem; }
  h1 { font-size: 2.35rem; }
}