:root {
  color-scheme: light;
  --bg: #fbf7ff;
  --panel: #ffffff;
  --panel-soft: #f5eeff;
  --text: #1a1a1b;
  --muted: #5f5867;
  --border: #1a1a1b;
  --primary: #ffe66d;
  --accent: #d9f4f2;
  --rose: #ffd9d4;
  --shadow: 10px 10px 0 rgba(26, 26, 27, 0.94);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(circle at top left, rgba(255, 230, 109, 0.45), transparent 22rem),
    radial-gradient(circle at top right, rgba(217, 244, 242, 0.85), transparent 24rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  min-height: 100vh;
  padding: 32px 16px 64px;
}

.page {
  margin: 0 auto;
  max-width: 920px;
}

.hero {
  border: 2px solid var(--border);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow);
  padding: 28px 24px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted);
}

h1 {
  margin: 0;
  font-size: clamp(2.3rem, 4vw, 3.6rem);
  line-height: 1;
}

.lede {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--muted);
}

.meta {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill {
  border: 2px solid var(--border);
  border-radius: 999px;
  background: var(--primary);
  padding: 10px 14px;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.layout {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.card {
  border: 2px solid var(--border);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 22px 20px;
}

.card.soft {
  background: var(--panel-soft);
}

.card.accent {
  background: var(--accent);
}

.card.rose {
  background: var(--rose);
}

h2 {
  margin: 0 0 12px;
  font-size: 1.25rem;
  line-height: 1.2;
}

h3 {
  margin: 20px 0 10px;
  font-size: 1rem;
  line-height: 1.3;
}

p,
li {
  font-size: 0.98rem;
  line-height: 1.72;
  color: var(--muted);
}

ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

a {
  color: inherit;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.toc {
  display: grid;
  gap: 10px;
}

.toc a {
  border: 2px solid var(--border);
  border-radius: 18px;
  background: #fff;
  box-shadow: 6px 6px 0 rgba(26, 26, 27, 0.14);
  padding: 12px 14px;
  font-weight: 700;
  text-decoration: none;
}

.foot {
  margin-top: 22px;
  font-size: 0.9rem;
}

.muted {
  color: var(--muted);
}

@media (min-width: 900px) {
  .layout {
    grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
    align-items: start;
  }

  .sticky {
    position: sticky;
    top: 24px;
  }
}

@media (max-width: 640px) {
  body {
    padding: 24px 12px 48px;
  }

  .hero,
  .card {
    border-radius: 24px;
    box-shadow: 8px 8px 0 rgba(26, 26, 27, 0.92);
  }

  .pill {
    width: 100%;
    text-align: center;
  }
}