:root {
  color-scheme: light dark;
  --blue: #0071e3;
  --green: #34c759;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --paper: #ffffff;
  --soft: #f5f5f7;
  --line: rgba(0, 0, 0, 0.09);
  --shadow: 0 20px 55px rgba(0, 65, 130, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-underline-offset: 0.18em; }

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(18px);
}

.nav-inner {
  width: min(1080px, calc(100% - 36px));
  min-height: 56px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; }
.nav-links a { color: var(--muted); font-size: 14px; text-decoration: none; }
.nav-links a:hover { color: var(--blue); }

.hero {
  overflow: hidden;
  padding: 92px 18px 84px;
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(0, 113, 227, 0.16), transparent 38rem),
    linear-gradient(180deg, #fbfdff 0%, #fff 85%);
}

.app-icon {
  width: 128px;
  height: 128px;
  border-radius: 27px;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 26px 0 8px;
  color: var(--blue);
  font-weight: 700;
  font-size: 16px;
}

h1, h2, h3 { letter-spacing: -0.035em; line-height: 1.12; }
h1 { max-width: 880px; margin: 0 auto; font-size: clamp(44px, 8vw, 78px); }
h2 { margin: 0 0 18px; font-size: clamp(30px, 5vw, 48px); }
h3 { font-size: 22px; }

.hero-copy {
  max-width: 760px;
  margin: 24px auto 0;
  color: var(--muted);
  font-size: clamp(19px, 3vw, 25px);
}

.cta-row { margin-top: 34px; display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 980px;
  background: var(--blue);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}
.button.secondary { background: var(--soft); color: var(--blue); }

.section { width: min(1040px, calc(100% - 36px)); margin: 0 auto; padding: 78px 0; }
.section-copy { max-width: 720px; color: var(--muted); font-size: 20px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 34px; }
.card { padding: 26px; border: 1px solid var(--line); border-radius: 22px; background: var(--soft); }
.card .symbol { color: var(--blue); font-size: 28px; }
.card p { margin-bottom: 0; color: var(--muted); }
.privacy-band { border-radius: 28px; padding: clamp(28px, 7vw, 64px); background: #071b31; color: #fff; }
.privacy-band p { max-width: 760px; color: rgba(255,255,255,.72); font-size: 20px; }
.checklist { padding: 0; list-style: none; }
.checklist li { margin: 10px 0; }
.checklist li::before { content: "✓"; margin-right: 10px; color: var(--green); font-weight: 800; }

.legal { width: min(780px, calc(100% - 36px)); margin: 0 auto; padding: 64px 0 100px; }
.legal h1 { margin: 0 0 12px; font-size: clamp(38px, 7vw, 60px); }
.legal h2 { margin-top: 52px; font-size: 28px; }
.legal h3 { margin-top: 34px; }
.legal .updated, .legal .lede { color: var(--muted); }
.legal .lede { font-size: 20px; }
.legal address { font-style: normal; }
.notice { padding: 18px 20px; border-left: 4px solid var(--blue); border-radius: 10px; background: var(--soft); }

footer { border-top: 1px solid var(--line); }
.footer-inner {
  width: min(1040px, calc(100% - 36px));
  margin: 0 auto;
  padding: 34px 0;
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 13px;
  flex-wrap: wrap;
}
.footer-inner a { color: inherit; }

@media (max-width: 760px) {
  .grid { grid-template-columns: 1fr; }
  .nav-inner { align-items: flex-start; padding: 14px 0; }
  .nav-links { gap: 10px 14px; }
  .hero { padding-top: 62px; }
}

@media (prefers-color-scheme: dark) {
  :root { --ink: #f5f5f7; --muted: #a1a1a6; --paper: #000; --soft: #1c1c1e; --line: rgba(255,255,255,.13); }
  .nav { background: rgba(0,0,0,.78); }
  .hero { background: radial-gradient(circle at 50% 0%, rgba(0,113,227,.28), transparent 38rem), #000; }
  .privacy-band { background: #071b31; }
}