:root {
  --bg: #fbfbfc;
  --fg: #1b1f27;
  --muted: #5d6573;
  --line: #e2e5ea;
  --card: #ffffff;
  --accent: #2f6fde;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --fg: #e6e8ec;
    --muted: #9aa2b1;
    --line: #2a2f38;
    --card: #1b1f26;
    --accent: #6ea0f7;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 var(--font);
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

header.top {
  border-bottom: 1px solid var(--line);
}

header.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 60px;
}

.brand {
  font-weight: 650;
  white-space: nowrap;
  color: var(--fg);
  text-decoration: none;
}

nav { display: flex; gap: 20px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
nav a:hover { color: var(--fg); }

.hero { padding-top: 72px; padding-bottom: 48px; }

.hero h1 {
  margin: 0 0 16px;
  max-width: 760px;
  font-size: clamp(30px, 5.5vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero p {
  margin: 0 0 28px;
  max-width: 640px;
  font-size: 19px;
  color: var(--muted);
}

.button {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}
.button:hover { filter: brightness(1.08); }

section { padding: 40px 0; border-top: 1px solid var(--line); }

h2 {
  margin: 0 0 20px;
  font-size: 24px;
  letter-spacing: -0.01em;
}

.services {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.services li {
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.services h3 { margin: 0 0 6px; font-size: 17px; }
.services p { margin: 0; color: var(--muted); font-size: 15px; }

footer {
  padding: 32px 0 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .services { grid-template-columns: 1fr; }
  header.top .wrap {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding-top: 12px;
    padding-bottom: 12px;
  }
  nav { gap: 16px; }
  .hero { padding-top: 48px; padding-bottom: 32px; }
}