:root {
  --bg: #fafafa;
  --surface: #ffffff;
  --text: #0d0d0d;
  --text-secondary: #585858;
  --border: #e7e7e7;
  --accent: #14b8a6;
  --max: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0d0d;
    --surface: #161616;
    --text: #f4f4f4;
    --text-secondary: #a2a2a2;
    --border: #272727;
    --accent: #2dd4bf;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

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

a:hover {
  text-decoration: underline;
}

/* Header */
.site-header {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}

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

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

.brand .feather {
  font-size: 22px;
}

/* Hero */
.hero {
  padding: 72px 0 40px;
  text-align: center;
}

.hero h1 {
  font-size: 40px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}

.hero p.tagline {
  font-size: 19px;
  color: var(--text-secondary);
  margin: 0 auto;
  max-width: 540px;
}

.badges {
  margin-top: 28px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* Feature list */
.features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: 24px 0 64px;
}

@media (min-width: 560px) {
  .features {
    grid-template-columns: 1fr 1fr;
  }
}

.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 22px;
}

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

.feature p {
  margin: 0;
  font-size: 14px;
  color: var(--text-secondary);
}

/* Long-form content (privacy) */
.doc {
  padding: 48px 0 64px;
}

.doc h1 {
  font-size: 32px;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.doc .meta {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0 0 36px;
}

.doc h2 {
  font-size: 20px;
  margin: 40px 0 12px;
}

.doc h3 {
  font-size: 16px;
  margin: 24px 0 8px;
}

.doc p,
.doc li {
  color: var(--text);
  font-size: 16px;
}

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

.doc li {
  margin: 6px 0;
}

.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  padding: 16px 18px;
  margin: 24px 0;
}

.callout p {
  margin: 0;
  font-size: 15px;
  color: var(--text-secondary);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0 48px;
  color: var(--text-secondary);
  font-size: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
}

.site-footer nav a {
  margin-left: 18px;
}