:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --surface: #f5f5f7;
  --surface-strong: #eeeeef;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: #d2d2d7;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --max: 980px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --surface: #1d1d1f;
    --surface-strong: #2c2c2e;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --line: #424245;
    --accent: #2997ff;
    --accent-hover: #46a6ff;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.47059 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}

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

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.site-nav {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  max-width: var(--max);
  min-height: 52px;
  padding: 0 22px;
}

.brand {
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 20px;
}

.nav-links a {
  color: var(--muted);
  font-size: 13px;
}

.page {
  margin: 0 auto;
  max-width: var(--max);
  padding: 0 22px 72px;
}

.hero {
  padding: 72px 0 48px;
  text-align: center;
}

.eyebrow {
  color: var(--muted);
  font-size: 19px;
  font-weight: 600;
  margin: 0 0 8px;
}

h1 {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(42px, 7vw, 72px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 auto 16px;
  max-width: 820px;
}

.lead {
  color: var(--muted);
  font-size: clamp(21px, 3vw, 28px);
  line-height: 1.2;
  margin: 0 auto;
  max-width: 760px;
}

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

.section:first-of-type {
  border-top: 0;
}

.section-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(180px, 0.38fr) minmax(0, 1fr);
}

h2 {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  font-size: 28px;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0;
}

h3 {
  font-size: 19px;
  margin: 0 0 6px;
}

p {
  margin: 0 0 14px;
}

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

.callout {
  background: var(--surface);
  border-radius: 18px;
  padding: 24px;
}

.app-list {
  display: grid;
  gap: 14px;
}

.app-card {
  align-items: center;
  background: var(--surface);
  border-radius: 18px;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  padding: 22px 24px;
  text-decoration: none;
}

.app-card:hover {
  background: var(--surface-strong);
  color: var(--text);
  text-decoration: none;
}

.app-card strong,
.app-card small {
  display: block;
}

.app-card small {
  color: var(--muted);
  margin-top: 3px;
}

.faq {
  display: grid;
  gap: 22px;
}

.faq-item {
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.faq-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  align-items: center;
  border-radius: 999px;
  display: inline-flex;
  font-size: 15px;
  font-weight: 600;
  min-height: 38px;
  padding: 8px 17px;
  text-decoration: none;
}

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

.button.primary:hover {
  background: var(--accent-hover);
  color: #fff;
  text-decoration: none;
}

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

.button.secondary:hover {
  background: var(--surface-strong);
  color: var(--text);
  text-decoration: none;
}

ul {
  margin: 0 0 16px 20px;
  padding: 0;
}

li {
  margin: 6px 0;
}

.footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  margin-top: 24px;
  padding: 22px 0 0;
}

@media (max-width: 700px) {
  .site-nav {
    padding: 0 16px;
  }

  .nav-links {
    gap: 14px;
  }

  .page {
    padding: 0 18px 56px;
  }

  .hero {
    padding: 52px 0 34px;
    text-align: left;
  }

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

  h1 {
    margin-left: 0;
    margin-right: 0;
  }

  .lead {
    margin-left: 0;
    margin-right: 0;
  }
}