:root {
  --ink: #0f172a;
  --ink-soft: #334155;
  --muted: #64748b;
  --bg: #fafaf9;
  --band: #f1f5f9;
  --line: #e2e8f0;
  --accent: #b45309;
  --max: 64rem;
}

* { box-sizing: border-box; }

html {
  font-family:
    ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

/* Header */
.site-header {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.5rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand:hover { text-decoration: none; }

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.35rem;
  background: var(--ink);
  color: var(--bg);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand__name { font-size: 1.05rem; }

.site-header nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.95rem;
}

.site-header nav a {
  color: var(--ink-soft);
  font-weight: 500;
}

/* Main layout */
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 4rem 0;
}

section.band {
  background: var(--band);
  padding: 4rem 1.5rem;
  margin: 0 -1.5rem;
}

h1, h2, h3 {
  color: var(--ink);
  letter-spacing: -0.015em;
  line-height: 1.2;
  margin: 0 0 0.75rem;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  max-width: 38rem;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

p {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  max-width: 48rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 42rem;
}

.section-lead {
  font-size: 1rem;
  color: var(--ink-soft);
  margin-bottom: 2rem;
  max-width: 44rem;
}

/* Hero */
.hero {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.5rem;
}

.grid article {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 1.5rem;
}

.grid article p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* Footer */
footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}

footer p { margin: 0; }

/* Small screens */
@media (max-width: 32rem) {
  section { padding: 3rem 0; }
  .site-header nav { font-size: 0.9rem; gap: 1rem; }
}