:root {
  color-scheme: light;
  --ink: #14211b;
  --muted: #5d6d65;
  --line: #dce6e0;
  --brand: #0d7750;
  --brand-dark: #075a3b;
  --surface: #ffffff;
  --soft: #f1f7f3;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: #f8fbf9;
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

a { color: var(--brand-dark); }
a:hover { color: var(--brand); }

.shell { width: min(820px, calc(100% - 32px)); margin: 0 auto; }

header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .94);
}

nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand { color: var(--ink); font-size: 1.15rem; font-weight: 760; text-decoration: none; }
.brand span { color: var(--brand); }
.nav-links { display: flex; gap: 18px; flex-wrap: wrap; }
.nav-links a { color: var(--muted); font-size: .92rem; font-weight: 650; text-decoration: none; }

main {
  margin: 42px auto;
  padding: clamp(26px, 5vw, 54px);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: 0 18px 55px rgba(18, 64, 42, .08);
}

.eyebrow { color: var(--brand); font-size: .8rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 8px 0 14px; font-size: clamp(2rem, 6vw, 3.4rem); line-height: 1.08; letter-spacing: -.04em; }
h2 { margin-top: 34px; font-size: 1.3rem; line-height: 1.25; }
p, li { color: var(--muted); }
strong { color: var(--ink); }

.lead { max-width: 64ch; font-size: 1.08rem; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 30px; }
.card { padding: 20px; border: 1px solid var(--line); border-radius: 17px; background: var(--soft); text-decoration: none; }
.card strong { display: block; margin-bottom: 6px; }
.card span { color: var(--muted); font-size: .9rem; }
.callout { margin: 26px 0; padding: 18px 20px; border-left: 4px solid var(--brand); border-radius: 12px; background: var(--soft); }

footer { padding: 8px 0 40px; color: var(--muted); font-size: .88rem; text-align: center; }

@media (max-width: 680px) {
  nav { align-items: flex-start; flex-direction: column; padding: 16px 0; }
  .cards { grid-template-columns: 1fr; }
  main { margin-top: 24px; border-radius: 18px; }
}