:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #111827;
  --muted: #5b6473;
  --border: #d9e0ea;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --soft: #eef4ff;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

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

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

a:hover {
  text-decoration: underline;
}

.page {
  width: min(1040px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 48px 0 80px;
}

.page-narrow {
  width: min(840px, calc(100vw - 32px));
}

.hero,
.section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero {
  padding: 40px;
}

.section {
  margin-top: 20px;
  padding: 28px 32px;
}

.eyebrow {
  font-size: 13px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

h1,
h2,
h3 {
  margin: 0 0 12px;
  line-height: 1.2;
}

h1 {
  font-size: clamp(36px, 5vw, 56px);
  max-width: 12ch;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
  margin-top: 20px;
}

p,
ul,
ol {
  margin: 0 0 14px;
}

ul,
ol {
  padding-left: 20px;
}

.lead {
  max-width: 760px;
  font-size: 18px;
  color: var(--muted);
  margin-top: 16px;
}

.sublead {
  max-width: 760px;
  font-size: 16px;
  color: var(--text);
  margin-top: 14px;
}

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

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 600;
}

.button:hover {
  text-decoration: none;
}

.button-primary {
  background: var(--blue);
  color: #fff;
}

.button-primary:hover {
  background: var(--blue-dark);
}

.button-secondary {
  background: var(--soft);
  border-color: #c9dafc;
  color: var(--blue-dark);
}

.topnav {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  font-size: 14px;
}

.feature-list li,
.link-list li {
  margin-bottom: 8px;
}

.section-note {
  color: var(--muted);
  margin-top: 8px;
}

code {
  font-family: Consolas, "SFMono-Regular", monospace;
  background: #f3f4f6;
  padding: 1px 6px;
  border-radius: 6px;
}

@media (max-width: 640px) {
  .page,
  .page-narrow {
    width: calc(100vw - 24px);
    padding: 24px 0 48px;
  }

  .hero {
    padding: 28px 20px;
  }

  .section {
    padding: 22px 20px;
  }

  h1 {
    font-size: 36px;
  }

  .lead {
    font-size: 16px;
  }
}