:root {
  --brand: #5C4EE8;
  --brand-tint: #EEEDF8;
  --brand-dark: #4338CA;
  --safe: #22C55E;
  --safe-tint: #DCFCE7;
  --warning: #F59E0B;
  --warning-tint: #FEF3C7;
  --danger: #EF4444;
  --danger-tint: #FEE2E2;

  --bg: #FFFFFF;
  --surface: #F7F7FB;
  --surface-2: #EEEDF8;
  --border: #E5E5EA;

  --text-primary: #1C1C1E;
  --text-secondary: #4A4A52;
  --text-tertiary: #8E8E93;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(15, 14, 26, 0.04), 0 1px 1px rgba(15, 14, 26, 0.04);
  --shadow-md: 0 6px 24px rgba(15, 14, 26, 0.06), 0 2px 6px rgba(15, 14, 26, 0.04);

  --max-width: 960px;
  --content-width: 680px;

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #7C71EF;
    --brand-tint: #1E1B3A;
    --brand-dark: #A99EFF;
    --safe-tint: #0E2A1A;
    --warning-tint: #2A1F0A;
    --danger-tint: #2A1212;

    --bg: #0F0E1A;
    --surface: #1A1928;
    --surface-2: #25243A;
    --border: #2C2B3D;

    --text-primary: #EEEDF8;
    --text-secondary: #B6B5C5;
    --text-tertiary: #7E7D8E;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.45);
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  text-decoration: underline;
}

h1, h2, h3 {
  color: var(--text-primary);
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.025em; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-top: 2.5em; }
h3 { font-size: 1.15rem; margin-top: 1.75em; }

p { margin: 0 0 1em; }

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--surface-2);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

ul {
  padding-left: 1.25em;
}

li + li {
  margin-top: 0.25em;
}

/* === Layout === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.prose {
  max-width: var(--content-width);
}

main {
  padding: 48px 0 96px;
}

/* === Site header === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-primary);
}

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

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.95rem;
}

.nav-links a {
  color: var(--text-secondary);
}

.nav-links a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

@media (max-width: 540px) {
  .nav-links { gap: 18px; font-size: 0.9rem; }
  .nav-links a:first-child { display: none; }
}

/* === Hero === */
.hero {
  padding: 80px 0 64px;
  text-align: center;
}

.hero-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  box-shadow: var(--shadow-md);
  margin: 0 auto 24px;
  display: block;
}

.hero h1 {
  margin: 0 auto 16px;
  max-width: 18ch;
}

.hero-subhead {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 36ch;
  margin: 0 auto 32px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--brand-tint);
  color: var(--brand);
  font-size: 0.95rem;
  font-weight: 500;
}

.badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 20%, transparent);
}

/* === Feature grid === */
.section {
  padding: 64px 0;
}

.section-eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
  margin: 0 0 8px;
}

.section-title {
  margin: 0 0 12px;
}

.section-lede {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 50ch;
  margin: 0 0 40px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.feature-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 14px;
}

.feature-mark.brand { background: var(--brand-tint); color: var(--brand); }
.feature-mark.safe { background: var(--safe-tint); color: var(--safe); }
.feature-mark.warning { background: var(--warning-tint); color: var(--warning); }
.feature-mark.danger { background: var(--danger-tint); color: var(--danger); }

.feature-card h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.feature-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* === Why section === */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}

.why-grid h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.why-grid p {
  margin: 0;
  color: var(--text-secondary);
}

/* === Privacy strip === */
.privacy-strip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.privacy-strip p {
  margin: 0;
  color: var(--text-secondary);
  max-width: 50ch;
}

.privacy-strip strong {
  color: var(--text-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  background: var(--brand);
  color: white;
  font-weight: 500;
  font-size: 0.95rem;
  white-space: nowrap;
}

.btn:hover {
  background: var(--brand-dark);
  text-decoration: none;
  color: white;
}

/* === Footer === */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  font-size: 0.9rem;
  color: var(--text-tertiary);
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer a {
  color: var(--text-secondary);
}

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

/* === Document pages (privacy, terms) === */
.doc-header {
  padding: 64px 0 32px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}

.doc-meta {
  color: var(--text-tertiary);
  font-size: 0.95rem;
  margin: 0;
}

.callout {
  background: var(--brand-tint);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin: 24px 0;
  color: var(--text-primary);
}

.callout p { margin: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.95rem;
}

th, td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--surface);
  font-weight: 600;
  color: var(--text-primary);
}