:root {
  color-scheme: light;
  --ink: #123028;
  --muted: #607168;
  --soft: #f0f8ed;
  --mint: #aaf07f;
  --green: #1d6b45;
  --cream: #fffaf0;
  --line: rgba(18, 48, 40, 0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 10%, rgba(170, 240, 127, 0.45), transparent 34rem),
    linear-gradient(145deg, #fffaf0 0%, #eff8ee 52%, #dff5ed 100%);
}

a { color: inherit; }

.page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0;
}

.hero {
  min-height: 56vh;
  display: grid;
  align-content: center;
  justify-items: start;
}

.brand-mark {
  width: 96px;
  padding: 12px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 24px 80px rgba(29, 107, 69, 0.14);
}

.brand-mark svg { display: block; width: 100%; }

.eyebrow {
  margin: 28px 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--green);
}

h1 {
  max-width: 870px;
  margin: 0;
  font-family: Newsreader, Georgia, serif;
  font-size: clamp(3.8rem, 10vw, 8.8rem);
  line-height: 0.86;
  letter-spacing: -0.075em;
}

.lede {
  max-width: 760px;
  margin: 28px 0 0;
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  line-height: 1.65;
  color: var(--muted);
}

.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.contact-row a {
  text-decoration: none;
  font-weight: 800;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
}

.prototype-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.prototype-card {
  min-height: 270px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.7);
  box-shadow: 0 18px 70px rgba(29, 107, 69, 0.1);
}

.prototype-card.selected {
  background: var(--ink);
  color: white;
}

.prototype-card span {
  width: max-content;
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--mint);
  color: var(--ink);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.prototype-card h2 {
  margin: auto 0 12px;
  font-size: 1.45rem;
  letter-spacing: -0.045em;
}

.prototype-card p {
  margin: 0;
  color: color-mix(in srgb, currentColor 72%, transparent);
  line-height: 1.55;
}

.note {
  margin-top: 18px;
  padding: 18px 22px;
  border: 1px dashed var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.45);
  color: var(--muted);
  line-height: 1.55;
}

@media (max-width: 900px) {
  .prototype-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
  .page-shell { padding: 32px 0; }
  .prototype-grid { grid-template-columns: 1fr; }
  .prototype-card { min-height: 220px; }
}