:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --panel: #ffffff;
  --text: #1f2328;
  --muted: #5f6673;
  --line: #d8dde6;
  --accent: #0f766e;
  --accent-dark: #115e59;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: var(--accent-dark);
}

.site-header {
  background: #101418;
  color: #ffffff;
  border-bottom: 1px solid #222a33;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1040px;
  margin: 0 auto;
  padding: 18px 24px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #ffffff;
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: #182027;
  font-size: 15px;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  text-decoration: none;
}

.main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 56px 24px 72px;
}

.hero {
  display: grid;
  gap: 20px;
  max-width: 820px;
}

.eyebrow {
  margin: 0;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 14px;
  font-size: 24px;
  line-height: 1.25;
}

h3 {
  margin: 28px 0 10px;
  font-size: 18px;
}

p {
  margin: 0 0 16px;
}

ul {
  margin: 0 0 18px;
  padding-left: 22px;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 19px;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 10px 16px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  color: var(--accent-dark);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 42px;
}

.card,
.document {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 26px rgba(16, 20, 24, 0.06);
}

.card {
  padding: 24px;
}

.card p {
  color: var(--muted);
}

.document {
  max-width: 860px;
  padding: 34px;
}

.meta {
  color: var(--muted);
  font-size: 14px;
}

.callback-box {
  margin-top: 24px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #eef7f5;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #ffffff;
}

.footer-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 24px;
  color: var(--muted);
  font-size: 14px;
}

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

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

  .document {
    padding: 24px;
  }
}