:root {
  --ink: #12233a;
  --muted: #4a5d73;
  --paper: #f2f6fa;
  --accent: #0d6e7a;
  --line: #c5d3e0;
  --hero: #0b2c3d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'DM Sans', system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 0%, #d4e8ef 0%, transparent 42%),
    linear-gradient(180deg, #e8f1f5 0%, var(--paper) 45%, #e4edf2 100%);
  min-height: 100vh;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 6vw;
}

.brand {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--hero);
}

nav {
  display: flex;
  gap: 1.25rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 560;
}

.hero {
  min-height: 62vh;
  margin: 0 4vw;
  padding: 4rem 5vw;
  display: grid;
  align-items: end;
  background:
    linear-gradient(115deg, rgba(11, 44, 61, 0.94), rgba(13, 110, 122, 0.55)),
    url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="80" height="80" viewBox="0 0 40 40"><circle cx="20" cy="20" r="1.2" fill="%231a5a68"/></svg>');
  background-size: cover, 22px 22px;
  color: #f3fafb;
}

.hero h1 {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  line-height: 1.08;
  margin: 0 0 0.75rem;
  max-width: 12ch;
}

.hero p {
  max-width: 36rem;
  margin: 0 0 1.4rem;
  color: #cfe3e8;
  font-size: 1.08rem;
}

.cta {
  display: inline-block;
  background: #f3fafb;
  color: var(--hero);
  text-decoration: none;
  font-weight: 700;
  padding: 0.75rem 1.2rem;
}

.catalog,
.support {
  padding: 3.5rem 6vw;
}

.catalog h2,
.support h2 {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: 1.85rem;
  margin: 0 0 1.25rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.grid article {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  padding: 0.85rem;
}

.img {
  height: 160px;
  margin-bottom: 0.75rem;
}

.tone-a { background: linear-gradient(145deg, #0d6e7a, #8ec5cd); }
.tone-b { background: linear-gradient(145deg, #1f4e79, #90b4d4); }
.tone-c { background: linear-gradient(145deg, #3d5a4c, #a3c4b4); }

.grid h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
}

.grid p,
.support p {
  margin: 0;
  color: var(--muted);
}

.support .hint {
  margin-top: 1rem;
  font-size: 0.92rem;
}

.support code {
  background: #dceaf0;
  padding: 0.1rem 0.35rem;
}