:root {
  --bg: #f5f5f7;
  --bg-alt: #ffffff;
  --fg: #1d1d1f;
  --muted: #6e6e73;
  --line: rgba(0, 0, 0, .08);
  --card: #ffffff;
  --accent: #0a84ff;
  --bezel: #1c1c1e;
  --frame: #3a3a3c;
  --glow: rgba(10, 132, 255, .18);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000;
    --bg-alt: #0b0b0d;
    --fg: #f5f5f7;
    --muted: #a1a1a6;
    --line: rgba(255, 255, 255, .1);
    --card: #161618;
    --accent: #409cff;
    --bezel: #000;
    --frame: #48484a;
    --glow: rgba(64, 156, 255, .22);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.5 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3 { font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif; letter-spacing: -.02em; margin: 0; }

.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px max(20px, env(safe-area-inset-left));
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.brand { display: flex; gap: 10px; align-items: center; color: var(--fg); font-weight: 600; }
.brand:hover { text-decoration: none; }
.brand img { border-radius: 7px; }
.nav nav { display: flex; gap: 22px; }
.nav nav a { color: var(--muted); }
.nav nav a:hover { color: var(--fg); text-decoration: none; }

main { overflow: hidden; }

.eyebrow {
  margin: 0 0 10px; color: var(--accent);
  font-size: 15px; font-weight: 600; letter-spacing: .01em;
}

.hero {
  max-width: 1120px; margin: 0 auto;
  padding: 72px 24px 64px;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center;
}
.app-icon {
  width: 112px; height: 112px; border-radius: 25px; margin-bottom: 28px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, .25);
}
.hero h1 { font-size: clamp(44px, 7vw, 80px); line-height: 1.02; font-weight: 700; }
.lede { font-size: clamp(19px, 2vw, 22px); color: var(--muted); margin: 24px 0 16px; max-width: 34ch; }
.lede a { color: var(--fg); border-bottom: 1px solid var(--line); }
.lede a:hover { text-decoration: none; border-color: var(--fg); }
.note {
  display: inline-block; margin: 8px 0 0; padding: 8px 14px;
  font-size: 14px; color: var(--muted);
  border: 1px solid var(--line); border-radius: 14px;
}

/* CSS iPhone frame */
.phone {
  position: relative; margin: 0 auto;
  width: min(340px, 78vw);
  padding: 11px;
  border-radius: 58px;
  background: var(--bezel);
  box-shadow:
    0 0 0 1.5px var(--frame),
    0 0 0 4px var(--bezel),
    0 30px 80px -20px rgba(0, 0, 0, .45),
    0 0 120px var(--glow);
}
.phone::after { /* dynamic island */
  content: ""; position: absolute; left: 50%; top: 22px;
  width: 30%; height: 26px; transform: translateX(-50%);
  background: #000; border-radius: 20px;
}
.phone img { width: 100%; border-radius: 47px; aspect-ratio: 660 / 1434; object-fit: cover; background: #000; }
.phone-hero { width: min(360px, 80vw); }

.showcase {
  max-width: 1040px; margin: 0 auto; padding: 72px 24px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
  border-top: 1px solid var(--line);
}
.showcase.flip .show-copy { order: 2; }
.show-copy h2 { font-size: clamp(30px, 4vw, 44px); line-height: 1.1; font-weight: 700; margin-bottom: 18px; }
.show-copy p:not(.eyebrow) { color: var(--muted); font-size: 19px; margin: 0; max-width: 40ch; }
.show-copy strong { color: var(--fg); }

.features {
  background: var(--bg-alt);
  padding: 88px 24px;
  border-top: 1px solid var(--line);
}
.features h2, .built h2 { text-align: center; font-size: clamp(32px, 4.5vw, 48px); margin-bottom: 48px; }
.grid {
  max-width: 1080px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.grid article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px; padding: 22px 20px;
}
@media (prefers-color-scheme: light) {
  .grid article { background: var(--bg); border-color: transparent; }
}
.ico { font-size: 28px; line-height: 1; display: block; margin-bottom: 14px; }
.grid h3 { font-size: 17px; margin-bottom: 6px; }
.grid p { margin: 0; font-size: 15px; color: var(--muted); line-height: 1.45; }

.built { max-width: 760px; margin: 0 auto; padding: 88px 24px 64px; }
.built ul { margin: 0; padding: 0; list-style: none; }
.built li {
  padding: 16px 0; border-bottom: 1px solid var(--line);
  color: var(--muted); font-size: 17px;
}
.built li strong { color: var(--fg); }
.fine { font-size: 13px; color: var(--muted); margin-top: 28px; text-align: center; }

footer {
  border-top: 1px solid var(--line);
  padding: 28px 24px calc(28px + env(safe-area-inset-bottom));
  text-align: center; font-size: 13px; color: var(--muted);
}
footer p { margin: 0; }

@media (max-width: 960px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; text-align: center; padding-top: 48px; gap: 48px; }
  .hero .app-icon { margin-left: auto; margin-right: auto; }
  .lede { margin-left: auto; margin-right: auto; }
  .showcase { grid-template-columns: 1fr; gap: 40px; text-align: center; padding: 56px 24px; }
  .showcase.flip .show-copy { order: 0; }
  .show-copy p:not(.eyebrow) { margin: 0 auto; }
  .nav nav { display: none; }
}
@media (max-width: 480px) {
  .grid { gap: 10px; }
  .grid article { padding: 16px 14px; border-radius: 16px; }
  .grid p { font-size: 14px; }
  .phone { border-radius: 50px; padding: 9px; }
  .phone img { border-radius: 41px; }
  .phone::after { top: 18px; height: 22px; }
}
@media (max-width: 340px) { .grid { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }