/* Opal-flavored: Apple-premium minimalism, heavy whitespace, alternating rhythm */
:root {
  --bg: #ffffff;
  --ink: #1A1A1C;
  --muted: #6E6E73;
  --line: #E8E8EA;
  --soft: #F5F5F7;
  --accent: #E03A24;
  --font: 'Geist', 'SF Pro Display', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --ease: cubic-bezier(.22,.61,.36,1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 17px; line-height: 1.55; -webkit-font-smoothing: antialiased; text-wrap: pretty; }
.wrap { max-width: 1080px; margin-inline: auto; padding-inline: 28px; }
a { color: inherit; text-decoration: none; }

.btn { display: inline-flex; align-items: center; justify-content: center; font-weight: 500; font-size: 15px; padding: 11px 22px; border-radius: 999px; background: var(--ink); color: #fff; cursor: pointer; transition: transform .2s var(--ease), opacity .2s var(--ease); }
.btn:hover { transform: translateY(-1px); opacity: .9; }
.btn-lg { font-size: 17px; padding: 15px 32px; }
.link { font-size: 17px; font-weight: 500; color: var(--accent); }
.link:hover { opacity: .75; }

.nav { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.7); backdrop-filter: saturate(180%) blur(20px); border-bottom: 1px solid transparent; transition: border-color .25s var(--ease); }
.nav.scrolled { border-bottom-color: var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 600; font-size: 19px; }
.brand .mark { display: block; }
.nav .btn { padding: 8px 18px; font-size: 14px; }

/* hero */
.hero { text-align: center; padding: 90px 0 0; }
.kicker { font-size: 15px; font-weight: 500; color: var(--accent); margin-bottom: 18px; }
.hero h1 { font-size: clamp(44px, 7vw, 88px); font-weight: 600; line-height: 1.03; letter-spacing: -0.04em; margin-bottom: 22px; }
.sub { font-size: clamp(19px, 2.4vw, 26px); color: var(--muted); max-width: 30ch; margin: 0 auto 26px; font-weight: 400; }
.micro { font-size: 13px; color: var(--muted); margin-top: 14px; }
.stage { max-width: 980px; margin: 64px auto 0; padding-inline: 28px; }
.stage img { width: 100%; height: auto; display: block; border-radius: 18px; box-shadow: 0 2px 8px rgba(0,0,0,.05), 0 40px 90px rgba(0,0,0,.12); }

/* spec strip */
.specs { padding: 88px 0; border-bottom: 1px solid var(--line); }
.spec-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.spec-grid b { display: block; font-size: 30px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 6px; }
.spec-grid span { font-size: 14px; color: var(--muted); }

/* alternating rows */
.row { padding: 110px 0; }
.row.alt { background: var(--soft); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.copy .tag { font-size: 14px; font-weight: 600; color: var(--accent); margin-bottom: 14px; }
.copy h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.08; margin-bottom: 16px; }
.copy p { font-size: 18px; color: var(--muted); }
.media img { width: 100%; height: auto; display: block; border-radius: 16px; box-shadow: 0 2px 8px rgba(0,0,0,.05), 0 24px 60px rgba(0,0,0,.10); }

/* statement */
.statement { padding: 130px 0; text-align: center; }
.statement h2 { font-size: clamp(32px, 5vw, 60px); font-weight: 600; letter-spacing: -0.035em; line-height: 1.05; margin-bottom: 18px; }
.statement p { font-size: 19px; color: var(--muted); max-width: 52ch; margin: 0 auto; }

/* download */
.download { text-align: center; padding: 110px 28px 130px; background: var(--soft); }
.dl-icon { margin-bottom: 24px; }
.download h2 { font-size: clamp(30px, 5vw, 52px); font-weight: 600; letter-spacing: -0.03em; margin-bottom: 12px; }
.download p { font-size: 18px; color: var(--muted); margin-bottom: 28px; }

.footer { padding: 36px 0; border-top: 1px solid var(--line); }
.footer-inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px 28px; font-size: 13px; color: var(--muted); }
.foot-brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: var(--ink); justify-self: start; }
.foot-brand .mark { display: block; }
.foot-credit { color: var(--muted); justify-self: center; text-align: center; }
.foot-legal { justify-self: end; text-align: right; }

.rise { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.rise.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce){ .rise{opacity:1;transform:none;transition:none} html{scroll-behavior:auto} }

@media (max-width: 760px){
  .split { grid-template-columns: 1fr; gap: 32px; }
  .row.alt .split .media { order: 2; }
  .spec-grid { grid-template-columns: repeat(2, 1fr); gap: 36px 24px; }
}
@media (max-width: 600px){
  .footer-inner { grid-template-columns: 1fr; justify-items: center; gap: 10px; }
  .foot-brand, .foot-legal { justify-self: center; text-align: center; }
}