:root {
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --bg: #f5f5f7;
  --paper: #ffffff;
  --line: rgba(0, 0, 0, 0.08);
  --btn: #1d1d1f;
  --btn-hover: #424245;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "SF Pro Text", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; display: block; }

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.85rem 2rem;
  background: rgba(245, 245, 247, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  font-weight: 560;
  letter-spacing: -0.02em;
}
.brand img { width: 28px; height: 28px; border-radius: 6px; }
.nav nav { display: flex; gap: 1.35rem; font-size: 0.92rem; color: var(--muted); }
.nav nav a { text-decoration: none; }
.nav nav a:hover { color: var(--ink); }

.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: flex-end;
  color: #f5f5f7;
  background: #111 url("images/hero-roof.jpg") center/cover no-repeat;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.18) 40%, rgba(0,0,0,0.72) 100%);
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 860px;
  padding: 0 2rem 5.5rem;
}
.hero-kicker {
  font-size: 0.92rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.85;
  margin: 0 0 0.8rem;
  font-weight: 500;
}
.hero h1 {
  font-family: "SF Pro Display", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin: 0 0 1rem;
}
.hero p {
  max-width: 36rem;
  font-size: 1.2rem;
  line-height: 1.4;
  color: rgba(245,245,247,0.86);
  margin: 0 0 1.8rem;
}
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn {
  display: inline-block;
  background: #f5f5f7;
  color: #1d1d1f;
  text-decoration: none;
  padding: 0.72rem 1.15rem;
  border-radius: 980px;
  font-size: 0.95rem;
  font-weight: 510;
}
.btn.ghost {
  background: transparent;
  color: #f5f5f7;
  box-shadow: inset 0 0 0 1px rgba(245,245,247,0.45);
}
.btn.dark {
  background: var(--btn);
  color: #f5f5f7;
}
.btn.dark:hover { background: var(--btn-hover); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 5.5rem 2rem; }
.wrap.narrow { max-width: 720px; }
h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  font-weight: 600;
  margin: 0 0 0.75rem;
}
.lede { color: var(--muted); font-size: 1.2rem; max-width: 38rem; margin: 0 0 2.5rem; }

.cards {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.cards li {
  background: var(--paper);
  border-radius: 18px;
  padding: 1.4rem 1.3rem 1.5rem;
  min-height: 10rem;
}
.cards h3 { margin: 0 0 0.45rem; font-size: 1.15rem; letter-spacing: -0.02em; }
.cards p { margin: 0; color: var(--muted); }

.band {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
  padding: 2rem 0 5rem;
}
.band.reverse { grid-template-columns: 0.85fr 1.15fr; }
.band.reverse .copy { order: 2; }
.band img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: 22px;
}
.band p { color: var(--muted); margin: 0; }
.band h2 { margin-bottom: 0.8rem; }

.photo-full {
  height: 62vh;
  min-height: 420px;
  background: #111 url("images/green.jpg") center/cover no-repeat;
  position: relative;
}
.photo-full .caption {
  position: absolute;
  left: 2rem;
  bottom: 1.5rem;
  color: #f5f5f7;
  font-size: 0.9rem;
  opacity: 0.85;
}

.pilot {
  background: var(--paper);
}
.pilot .wrap { padding-top: 5rem; padding-bottom: 5rem; }
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}
.stat {
  background: var(--bg);
  border-radius: 18px;
  padding: 1.3rem 1.2rem;
}
.stat b { display: block; font-size: 2rem; letter-spacing: -0.04em; }
.stat span { color: var(--muted); font-size: 0.95rem; }

footer {
  padding: 2.5rem 2rem 3.5rem;
  color: var(--muted);
  font-size: 0.82rem;
  max-width: 1080px;
  margin: 0 auto;
}
footer p { margin: 0.35rem 0; }
footer a { color: var(--ink); }

.how-hero { padding: 5rem 2rem 1rem; max-width: 720px; margin: 0 auto; }
.how-hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin: 0 0 0.8rem;
}
.steps { max-width: 720px; margin: 0 auto; padding: 1rem 2rem 5rem; }
.steps article {
  padding: 1.6rem 0;
  border-top: 1px solid var(--line);
}
.steps h2 { font-size: 1.35rem; }
.steps p { color: var(--muted); margin: 0; }

@media (max-width: 860px) {
  .nav { padding: 0.75rem 1.1rem; }
  .nav nav { display: none; }
  .hero-inner { padding: 0 1.1rem 3.2rem; }
  .wrap { padding: 3.5rem 1.1rem; }
  .cards, .stats, .band, .band.reverse { grid-template-columns: 1fr; }
  .band img { height: 260px; }
  .band.reverse .copy { order: 0; }
}