:root {
  --bg: #fdfbf7;
  --surface: #ffffff;
  --text: #1a1a1a;
  --muted: #575757;
  --accent: #ff8b7b;
  --line: #e5e5e5;
  --shadow: 4px 4px 0 rgba(0, 0, 0, 0.9);
  --radius: 16px;
  --max: 920px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  background: linear-gradient(170deg, #fffefc 0%, var(--bg) 55%, #fff5ef 100%);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(var(--max), 92vw);
  margin: 0 auto;
}

header {
  padding: 28px 0 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
}

.brand-badge {
  width: 28px;
  height: 28px;
  border-radius: 10px;
  background: var(--accent);
  border: 2px solid #111;
  box-shadow: 2px 2px 0 #111;
}

nav {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

nav a {
  text-decoration: none;
  color: #111;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 14px;
}

nav a:hover,
nav a:focus-visible {
  border: 2px solid #111;
  padding: 7px 13px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(16px, 2vw, 26px);
  margin: 16px 0;
}

.card.featured {
  border: 2px solid #111;
  box-shadow: var(--shadow);
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 {
  margin-top: 0;
  font-size: clamp(30px, 5vw, 42px);
}

h2 {
  margin-top: 30px;
  margin-bottom: 10px;
  font-size: clamp(22px, 3.5vw, 30px);
}

h3 {
  margin-top: 20px;
  margin-bottom: 8px;
  font-size: 18px;
}

p,
ul,
ol {
  margin: 10px 0;
}

small,
.meta {
  color: var(--muted);
}

a {
  color: #0b4f9c;
}

.grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.tile {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
}

.tile h3 {
  margin-top: 0;
}

footer {
  padding: 14px 0 40px;
}

footer .card {
  margin-top: 28px;
}

code {
  background: #f4f4f4;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  padding: 1px 5px;
}

@media (max-width: 560px) {
  nav {
    gap: 8px;
  }

  nav a {
    font-size: 13px;
    padding: 7px 11px;
  }
}