:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --surface: #ffffff;
  --text: #18202a;
  --muted: #5d6875;
  --line: #d9dee7;
  --primary: #1163d8;
  --primary-dark: #0b47a1;
  --accent: #0a8f6a;
  --max: 1040px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

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

a:hover {
  text-decoration: underline;
}

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

.nav {
  align-items: center;
  display: flex;
  gap: 24px;
  justify-content: space-between;
  margin: 0 auto;
  max-width: var(--max);
  padding: 18px 20px;
}

.brand {
  align-items: center;
  color: var(--text);
  display: inline-flex;
  font-size: 20px;
  font-weight: 700;
  gap: 10px;
}

.brand-mark {
  align-items: center;
  background: var(--primary);
  border-radius: 8px;
  color: #fff;
  display: inline-flex;
  font-size: 18px;
  font-weight: 700;
  height: 36px;
  justify-content: center;
  width: 36px;
}

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

.nav-links a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.hero,
.page,
.section {
  margin: 0 auto;
  max-width: var(--max);
  padding: 54px 20px;
}

.hero {
  display: grid;
  gap: 32px;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
}

.hero h1,
.page h1 {
  font-size: 44px;
  line-height: 1.1;
  margin: 0 0 18px;
}

.hero p,
.lead {
  color: var(--muted);
  font-size: 18px;
  margin: 0 0 22px;
}

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

.button {
  background: var(--primary);
  border-radius: 6px;
  color: #fff;
  display: inline-flex;
  font-weight: 700;
  padding: 12px 16px;
}

.button.secondary {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
}

.feature-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
}

.feature-panel h2,
.section h2,
.page h2 {
  font-size: 24px;
  margin: 0 0 14px;
}

.feature-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
}

.feature-list li {
  background: #f1f5fb;
  border-radius: 6px;
  list-style: none;
  padding: 14px;
}

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

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

.card h3 {
  margin: 0 0 8px;
}

.page {
  max-width: 860px;
}

.page section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  margin: 18px 0;
  padding: 22px;
}

.page ul {
  padding-left: 22px;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  margin-top: 30px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  margin: 0 auto;
  max-width: var(--max);
  padding: 24px 20px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

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

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

  .hero h1,
  .page h1 {
    font-size: 34px;
  }
}