:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #dbe3ee;
  --accent: #0f4c81;
  --accent-soft: #e8f1fb;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #ffffff 0%, var(--bg) 60%);
  min-height: 100dvh;
  padding: 12px 0;
}

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

a:hover {
  text-decoration: underline;
}

.page-shell {
  width: min(1080px, calc(100% - 32px));
  margin: 24px auto 40px;
}

.site-header,
.card {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 24px;
  backdrop-filter: blur(12px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand img {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--border);
}

.brand h1,
.hero h2,
.card h3,
.prose h2,
.prose h3,
.eyebrow,
.site-footer {
  margin: 0;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.hero,
.card,
.prose {
  padding: 28px;
}

main {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 24px;
  min-height: 80vh;
}

.hero {
  background: linear-gradient(135deg, #ffffff 0%, var(--accent-soft) 100%);
}

.hero h2 {
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.08;
  margin-top: 10px;
}

.hero p,
.card p,
.prose p,
.prose li {
  line-height: 1.7;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.card h3,
.prose h3 {
  font-size: 1.2rem;
  color: var(--text);
  margin-bottom: 10px;
}

.prose ul {
  margin: 0 0 1rem 1.2rem;
  padding: 0;
}

.prose li + li {
  margin-top: 0.5rem;
}

.site-footer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  color: var(--muted);
}

.page-shell {
  margin: 0 auto;
  width: 90%;
  max-width: 768px;
}

@media (max-width: 720px) {
  .site-header,
  .grid {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: flex-start;
  }

  .grid {
    display: grid;
  }

  .hero,
  .card,
  .prose,
  .site-header {
    padding: 20px;
  }
}