:root {
  --navy: #0d2340;
  --navy-soft: #19375e;
  --mint: #38b89d;
  --mint-pale: #dff7f0;
  --orange: #f29a55;
  --canvas: #f6f3eb;
  --paper: #fffdf8;
  --ink: #142033;
  --muted: #5e6978;
  --line: #d9dedf;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.75;
}
a { color: #075f75; text-underline-offset: 0.18em; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--orange); outline-offset: 4px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; z-index: 100; padding: 10px 14px; background: white; }
.wrap { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }

header {
  position: sticky;
  top: 0;
  z-index: 20;
  color: white;
  background: color-mix(in srgb, var(--navy) 94%, transparent);
  backdrop-filter: blur(14px);
}
nav { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { color: white; font-weight: 900; letter-spacing: .04em; text-decoration: none; }
.nav-links { display: flex; flex-wrap: wrap; gap: 20px; }
.nav-links a { color: #e7f6f3; font-size: .92rem; font-weight: 700; text-decoration: none; }

.hero {
  overflow: hidden;
  color: white;
  background:
    radial-gradient(circle at 78% 20%, rgba(56,184,157,.34), transparent 34%),
    linear-gradient(145deg, var(--navy), #102f54 72%, #184963);
  padding: 76px 0 82px;
}
.hero-grid { display: grid; grid-template-columns: 1.25fr .75fr; align-items: center; gap: 68px; }
.eyebrow { color: var(--orange); font-size: .82rem; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
h1 { margin: 12px 0 18px; font-size: clamp(2.5rem, 7vw, 5.8rem); line-height: .98; letter-spacing: -.055em; }
.lead { max-width: 650px; margin: 0; color: #dce8ee; font-size: clamp(1.05rem, 2vw, 1.3rem); }
.hero-card { position: relative; justify-self: center; }
.hero-card::before { content: ""; position: absolute; inset: 12% -24%; border: 1px solid rgba(255,255,255,.17); border-radius: 50%; transform: rotate(-9deg); }
.app-icon { position: relative; display: block; width: min(300px, 64vw); border-radius: 24%; box-shadow: 0 30px 70px rgba(0,0,0,.35); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 10px 18px; border-radius: 14px; font-weight: 800; text-decoration: none; }
.button-primary { color: var(--navy); background: var(--mint); }
.button-secondary { color: white; border: 1px solid rgba(255,255,255,.5); }

main section { padding: 72px 0; }
.section-title { margin: 0 0 12px; color: var(--navy); font-size: clamp(1.8rem, 4vw, 3.1rem); line-height: 1.2; letter-spacing: -.035em; }
.section-intro { max-width: 720px; margin: 0 0 30px; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { padding: 26px; border: 1px solid var(--line); border-radius: 22px; background: var(--paper); box-shadow: 0 14px 35px rgba(13,35,64,.06); }
.card h2, .card h3 { margin-top: 0; color: var(--navy); line-height: 1.35; }
.number { display: block; margin-bottom: 16px; color: var(--mint); font-size: 2.2rem; font-weight: 950; line-height: 1; }
.band { background: var(--mint-pale); }
.timeline { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-top: 32px; }
.stage { min-height: 150px; padding: 20px; color: white; background: var(--navy); border-radius: 18px; }
.stage:nth-child(even) { background: var(--navy-soft); }
.stage strong { display: block; margin: 8px 0; font-size: 1.15rem; }
.stage small { color: #b9eee3; font-weight: 800; }
.prose { max-width: 780px; }
.prose h2 { margin-top: 2.3em; color: var(--navy); line-height: 1.35; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: 1.8em; color: var(--navy); }
.prose li + li { margin-top: .45em; }
.notice { padding: 18px 20px; border-left: 5px solid var(--mint); background: var(--mint-pale); border-radius: 6px 14px 14px 6px; }
.meta { color: var(--muted); font-size: .93rem; }
footer { padding: 36px 0; color: #d7e3e8; background: var(--navy); }
.footer-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
footer a { color: #a9eadc; }

@media (max-width: 780px) {
  .hero { padding-top: 52px; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-card { order: -1; }
  .app-icon { width: 180px; }
  .grid { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr 1fr; }
  .stage:last-child { grid-column: 1 / -1; }
  .footer-row { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 520px) {
  .wrap { width: min(calc(100% - 28px), var(--max)); }
  nav { align-items: flex-start; padding: 14px 0; flex-direction: column; gap: 5px; }
  .nav-links { gap: 14px; }
  main section { padding: 52px 0; }
  .timeline { grid-template-columns: 1fr; }
  .stage:last-child { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}