:root {
  --bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #22c55e;

  --max: 1100px;
  --pad: 24px;
  --radius: 10px;

  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand a {
  color: var(--text);
  text-decoration: none;
}

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

.navlinks a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}

.navlinks a:hover { text-decoration: underline; }

.main {
  padding: 44px 0 56px;
}

.hero {
  padding: 44px 0 14px;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: 44px;
  line-height: 1.12;
  letter-spacing: -0.6px;
}

.hero p {
  margin: 0;
  max-width: 720px;
  font-size: 18px;
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.button {
  display: inline-block;
  padding: 12px 16px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  border: 1px solid var(--text);
  color: var(--bg);
  background: var(--text);
}

.button.secondary {
  background: var(--bg);
  color: var(--text);
}

.grid {
  display: grid;
  gap: 18px;
  margin-top: 28px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  background: #fff;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 26px 0;
}

.section h2 {
  margin: 0 0 10px;
  font-size: 22px;
  letter-spacing: -0.2px;
}

.section p {
  margin: 0;
  color: var(--muted);
  max-width: 820px;
}

.hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 26px 0;
}

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
  padding: 22px 0;
}

.small {
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 900px) {
  .hero h1 { font-size: 36px; }
  .grid { grid-template-columns: 1fr; }
}