:root {
  --ink: #1c2420;
  --muted: #6b7671;
  --line: #e2e7e4;
  --accent: #2f6b4f;
  --bg: #fbfcfb;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.wrap { width: min(920px, 90vw); margin: 0 auto; }
a { color: var(--accent); }

.site-header {
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-weight: 600;
  letter-spacing: -.01em;
  text-decoration: none;
  color: var(--ink);
}
.mark { width: 26px; height: 26px; fill: var(--accent); }
.mark .vein { stroke: #fff; stroke-width: 1.6; fill: none; }
nav a {
  margin-left: 1.35rem;
  color: var(--muted);
  text-decoration: none;
  font-size: .95rem;
}
nav a:hover { color: var(--ink); }

.hero { padding: 4.5rem 0 3rem; }
.hero h1 {
  font-size: clamp(1.9rem, 4.4vw, 2.9rem);
  line-height: 1.15;
  letter-spacing: -.02em;
  margin: 0 0 1rem;
  max-width: 22ch;
}
.lead { font-size: 1.12rem; color: var(--muted); max-width: 58ch; margin: 0 0 1.9rem; }
.button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: .7rem 1.25rem;
  border-radius: 6px;
  font-size: .95rem;
}
.button:hover { background: #275a43; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.25rem;
  padding: 1rem 0 3rem;
}
.cards article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.35rem 1.4rem;
}
.cards h2 { font-size: 1.05rem; margin: 0 0 .5rem; }
.cards p { margin: 0; color: var(--muted); font-size: .95rem; }

.prose { padding: 0 0 4rem; max-width: 62ch; }
.prose h2 { font-size: 1.25rem; margin: 0 0 .75rem; }
.prose p { color: var(--muted); }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.6rem 0 2.4rem;
  font-size: .9rem;
  color: var(--muted);
}
.site-footer p { margin: .2rem 0; }
.muted { color: #9aa4a0; }

form.contact { max-width: 520px; }
form.contact label { display: block; margin: 1rem 0 .35rem; font-size: .92rem; }
form.contact input, form.contact textarea {
  width: 100%;
  padding: .6rem .7rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  font: inherit;
  background: #fff;
  color: var(--ink);
}
form.contact textarea { min-height: 130px; resize: vertical; }