:root {
  --bg: #f4f0ea;
  --paper: #fffdf9;
  --ink: #1f1a17;
  --muted: #675f58;
  --accent: #8f3d21;
  --accent-soft: #f2dfd7;
  --line: #d9cec3;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top right, #efe5db 0, var(--bg) 42%, #ede7df 100%);
  line-height: 1.65;
}

.wrap {
  width: min(1080px, 92%);
  margin: 0 auto;
}

header {
  border-bottom: 2px solid var(--line);
  background: rgba(255, 253, 249, 0.94);
  position: sticky;
  top: 0;
  backdrop-filter: blur(3px);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 14px 0;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.4px;
  color: var(--accent);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

nav a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  font-weight: 600;
}

nav a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

main {
  padding: 28px 0 42px;
}

h1, h2, h3 {
  line-height: 1.28;
}

h1 {
  margin-top: 0;
  font-size: clamp(1.8rem, 2.8vw, 2.6rem);
}

.lead {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 6px solid var(--accent);
  border-radius: 12px;
  padding: 16px 18px;
  margin: 0 0 22px;
}

.criteria {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  margin: 0 0 28px;
}

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

.cards {
  display: grid;
  gap: 14px;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.12rem;
}

.badge {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  border-radius: 999px;
  padding: 2px 10px;
  margin-right: 8px;
}

.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.subject-grid a,
.related a {
  display: block;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  text-decoration: none;
  padding: 10px 12px;
}

.subject-grid a:hover,
.related a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.related {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}

footer {
  border-top: 2px solid var(--line);
  padding: 20px 0 26px;
  color: var(--muted);
  font-size: 0.95rem;
}