:root {
  --ink: #111827;
  --ink-muted: #6B7280;
  --ink-faint: #9CA3AF;
  --accent: #4F46E5;
  --accent-soft: #EEF2FF;
  --border: #E5E7EB;
  --bg: #ffffff;
  --bg-sunken: #F9FAFB;
  --surface: #ffffff;
  --shadow: 0 1px 2px rgba(17,24,39,0.04), 0 8px 24px rgba(17,24,39,0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #F3F4F6;
    --ink-muted: #9CA3AF;
    --ink-faint: #6B7280;
    --accent: #818CF8;
    --accent-soft: rgba(129,140,248,0.12);
    --border: #27272A;
    --bg: #0B0B0D;
    --bg-sunken: #141416;
    --surface: #141416;
    --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.4);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: saturate(180%) blur(14px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
}
.brand:hover { text-decoration: none; }
.brand .mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  display: block;
  object-fit: cover;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 12px;
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.btn-primary:hover { opacity: 0.88; }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--border);
}
.btn-ghost:hover { background: var(--bg-sunken); }
.btn-sm { padding: 8px 14px; font-size: 13px; border-radius: 10px; }

/* ---- Hero ---- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 96px 24px 72px;
  text-align: center;
}
.hero::before {
  content: "";
  position: absolute;
  top: -220px;
  left: 50%;
  width: 900px;
  height: 560px;
  transform: translateX(-50%);
  background:
    radial-gradient(closest-side, color-mix(in srgb, var(--accent) 24%, transparent), transparent),
    radial-gradient(closest-side at 30% 70%, color-mix(in srgb, var(--accent) 16%, transparent), transparent);
  filter: blur(10px);
  pointer-events: none;
  z-index: 0;
}
.hero-inner { position: relative; z-index: 1; max-width: 640px; margin: 0 auto; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 6px 12px;
  border-radius: 100px;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(34px, 6vw, 52px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}
.hero .tagline {
  font-size: 18px;
  color: var(--ink-muted);
  margin: 0 auto 32px;
  max-width: 460px;
}
.hero-ctas {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.trust-line {
  font-size: 13px;
  color: var(--ink-faint);
}

/* ---- Section headings ---- */
.section-head { text-align: center; max-width: 520px; margin: 0 auto 44px; }
.section-head h2 {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
}
.section-head p { color: var(--ink-muted); margin: 0; font-size: 15.5px; }

/* ---- Feature grid ---- */
.features { padding: 24px 24px 88px; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  max-width: 1040px;
  margin: 0 auto;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.feature-card:hover { transform: translateY(-3px); }
.feature-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.feature-card h3 { font-size: 16px; font-weight: 600; margin: 0 0 6px; }
.feature-card p { font-size: 14px; color: var(--ink-muted); margin: 0; line-height: 1.55; }

/* ---- CTA band ---- */
.cta-band {
  background: var(--ink);
  color: var(--bg);
  text-align: center;
  padding: 72px 24px;
}
.cta-band h2 {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}
.cta-band p { color: color-mix(in srgb, var(--bg) 70%, transparent); margin: 0 0 28px; font-size: 15.5px; }
.cta-band .btn-primary { background: var(--bg); color: var(--ink); }

/* ---- Footer ---- */
footer.site-footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1040px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.footer-inner .brand { font-size: 13px; color: var(--ink-faint); font-weight: 500; }
.footer-inner .brand .mark { width: 22px; height: 22px; font-size: 11px; border-radius: 6px; }
.footer-links { display: flex; gap: 20px; font-size: 13px; }
.footer-links a { color: var(--ink-faint); }

/* ---- Legal/content pages ---- */
.wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 56px 24px 80px;
}
h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}
h2 { font-size: 18px; font-weight: 600; margin: 32px 0 8px; }
p, li { color: var(--ink-muted); font-size: 15px; }
strong { color: var(--ink); }
.updated { font-size: 12px; color: var(--ink-faint); margin-top: -4px; margin-bottom: 24px; }
.card {
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
  margin: 24px 0;
}