:root {
  --bg: #ffffff;
  --bg-gray: #f5f5f7;          /* Apple's section band */
  --ink: #1d1d1f;
  --gray: #6e6e73;
  --gray-2: #86868b;
  --line: rgba(0, 0, 0, 0.1);
  --blue: #0071e3;
  --blue-h: #0077ed;
  --maxw: 1000px;
  --sans: -apple-system, "SF Pro Display", "InterVariable", "Inter", system-ui, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--ink); font-family: var(--sans);
  line-height: 1.5; -webkit-font-smoothing: antialiased;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11"; overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
img { display: block; max-width: 100%; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
h1, h2 { font-weight: 600; letter-spacing: -0.022em; line-height: 1.07; text-wrap: balance; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.8); backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 52px; max-width: 1024px; }
.brand { display: flex; align-items: center; gap: 9px; }
.brand img { width: 26px; height: 26px; border-radius: 7px; }
.brand-name { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { color: var(--gray); font-size: 14px; transition: color .2s; }
.nav-links a:hover { color: var(--ink); }

/* Buttons + links */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--blue); color: #fff; font-size: 16px; font-weight: 500;
  padding: 12px 24px; border-radius: 980px; border: 0; cursor: pointer; transition: background .2s, transform .12s;
}
.btn:hover { background: var(--blue-h); }
.btn:active { transform: scale(0.98); }
.link { color: var(--blue); font-size: 16px; }
.link:hover { text-decoration: underline; }
.overline { font-size: 15px; font-weight: 600; letter-spacing: -0.01em; color: var(--gray-2); }
.overline.blue { color: var(--blue); }

/* Hero */
.hero { text-align: center; padding: 84px 0 0; }
.hero .overline { margin-bottom: 16px; }
.hero h1 { font-size: clamp(42px, 7vw, 82px); max-width: 15ch; margin: 0 auto; }
.hero .lede { color: var(--gray); font-size: clamp(19px, 2.4vw, 25px); font-weight: 400; max-width: 36ch; margin: 22px auto 28px; }
.cta-row { display: flex; gap: 24px; align-items: center; justify-content: center; flex-wrap: wrap; }
.hero-shot { margin: 60px auto 0; width: 330px; max-width: 78vw; }
.hero-shot img { border-radius: 44px; box-shadow: 0 34px 70px rgba(0, 0, 0, 0.18); }

/* Feature sections */
.feature { padding: 112px 0; text-align: center; }
.feature.alt { background: var(--bg-gray); }
.feature .overline { margin-bottom: 12px; }
.feature h2 { font-size: clamp(32px, 4.8vw, 54px); max-width: 17ch; margin: 0 auto; }
.feature .lede { color: var(--gray); font-size: clamp(18px, 2.2vw, 22px); font-weight: 400; max-width: 34ch; margin: 18px auto 0; }
.feature-shot { margin: 52px auto 0; width: 312px; max-width: 74vw; }
.feature-shot img { border-radius: 42px; box-shadow: 0 26px 56px rgba(0, 0, 0, 0.15); }

/* Closing */
.closing { text-align: center; padding: 124px 0; }
.closing h2 { font-size: clamp(34px, 5.2vw, 60px); }
.closing .lede { color: var(--gray); font-size: 21px; font-weight: 400; margin: 18px auto 30px; max-width: 34ch; }

/* Footer */
footer { background: var(--bg-gray); border-top: 1px solid var(--line); padding: 34px 0; }
footer .wrap { max-width: 1024px; }
.foot-top { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; }
.foot-brand { display: flex; align-items: center; gap: 9px; font-size: 15px; font-weight: 600; }
.foot-brand img { width: 22px; height: 22px; border-radius: 6px; }
.foot-links { display: flex; gap: 24px; }
.foot-links a { color: var(--gray); font-size: 13px; }
.foot-links a:hover { color: var(--ink); }
.foot-legal { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 12px; color: var(--gray-2); }

/* Article (privacy) */
.article { max-width: 700px; margin: 0 auto; padding: 72px 24px 48px; }
.article h1 { font-size: clamp(34px, 5vw, 48px); font-weight: 600; }
.article .updated { color: var(--gray-2); margin: 10px 0 34px; }
.article h2 { font-size: 24px; font-weight: 600; margin: 38px 0 12px; }
.article p, .article li { color: var(--gray); font-size: 17px; margin-bottom: 12px; }
.article ul { padding-left: 22px; }
.article strong { color: var(--ink); font-weight: 500; }
.back { color: var(--blue); margin-bottom: 28px; display: inline-block; }

@media (max-width: 760px) {
  .hero { padding: 56px 0 0; }
  .feature { padding: 84px 0; }
  .closing { padding: 96px 0; }
  .nav-links { gap: 18px; }
}