:root {
  color-scheme: light;
  --ink: #18221f;
  --muted: #56615c;
  --line: #d9ded9;
  --paper: #f7f8f4;
  --white: #ffffff;
  --accent: #3d6c57;
  --accent-dark: #214534;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px clamp(20px, 6vw, 72px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 750;
  text-decoration: none;
}

.mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  background: var(--ink);
  color: var(--white);
  font-weight: 800;
}

nav {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

nav a {
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.75fr);
  align-items: center;
  gap: clamp(36px, 7vw, 92px);
  min-height: 72vh;
  padding: clamp(56px, 8vw, 110px) clamp(20px, 6vw, 72px);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 20px;
  font-size: clamp(4rem, 12vw, 10rem);
  line-height: 0.9;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 24px;
  font-size: clamp(2rem, 5vw, 4.6rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.05rem;
}

.hero p {
  max-width: 650px;
  color: var(--muted);
  font-size: clamp(1.15rem, 2vw, 1.6rem);
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  margin-top: 18px;
  padding: 0 22px;
  background: var(--accent-dark);
  color: var(--white);
  font-weight: 700;
  text-decoration: none;
}

.signal {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  background: var(--white);
  border: 1px solid var(--line);
}

.signal svg {
  width: min(78%, 360px);
  height: auto;
  color: var(--accent);
}

.signal circle,
.signal path {
  fill: none;
  stroke: currentColor;
  stroke-width: 14;
  stroke-linejoin: round;
}

.band {
  padding: clamp(56px, 7vw, 96px) clamp(20px, 6vw, 72px);
  background: var(--white);
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.focus-grid article {
  min-height: 220px;
  padding: 28px;
  background: var(--white);
}

.focus-grid p,
.contact p {
  color: var(--muted);
}

.contact {
  max-width: 760px;
  padding: clamp(56px, 7vw, 96px) clamp(20px, 6vw, 72px);
}

.contact a {
  font-size: 1.2rem;
  font-weight: 750;
}

footer {
  padding: 28px clamp(20px, 6vw, 72px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .signal {
    max-width: 420px;
  }

  .focus-grid {
    grid-template-columns: 1fr;
  }
}