:root {
  color-scheme: dark;
  --bg: #030814;
  --ink: rgba(235, 248, 255, 0.94);
  --muted: rgba(205, 230, 255, 0.68);
  --faint: rgba(205, 230, 255, 0.48);
  --line: rgba(153, 220, 255, 0.16);
  --surface: rgba(3, 8, 20, 0.36);
  --surface-strong: rgba(3, 8, 20, 0.58);
  --cyan: #6ee7f9;
  --violet: #8b5cf6;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { background: var(--bg); }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 50% 30%, rgba(255,255,255,0.06), rgba(3,8,20,0.18) 42%, rgba(3,8,20,0.72) 82%),
    radial-gradient(circle at 18% 14%, rgba(110,231,249,0.16), transparent 28rem),
    radial-gradient(circle at 85% 18%, rgba(139,92,246,0.14), transparent 30rem),
    var(--bg);
  color: var(--ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
img { display: block; max-width: 100%; }
.container { width: min(1040px, calc(100% - 32px)); margin: 0 auto; }
.skip-link { position: absolute; left: -999px; top: 12px; z-index: 20; padding: 10px 14px; border-radius: 999px; background: var(--ink); color: var(--bg); }
.skip-link:focus { left: 12px; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 14px 0;
  background: linear-gradient(180deg, rgba(3,8,20,0.82), rgba(3,8,20,0));
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; letter-spacing: -0.02em; }
.brand img { width: 34px; height: 34px; border-radius: 10px; box-shadow: 0 0 24px rgba(110,231,249,0.16); }
.nav-links { display: flex; align-items: center; gap: 16px; color: var(--muted); font-size: 0.92rem; }
.nav-links a { text-decoration: none; }
.nav-links a:hover { color: var(--ink); }

.app-store-link { display: inline-flex; width: 150px; max-width: 100%; transition: transform 120ms ease, opacity 120ms ease; }
.app-store-link:hover { transform: translateY(-1px); opacity: 0.94; }
.app-store-link.hero-badge { width: 180px; }
.app-store-link img { width: 100%; height: auto; }

.hero {
  min-height: calc(100svh - 74px);
  display: grid;
  place-items: center;
  padding: 34px 0 72px;
  text-align: center;
}
.hero-copy { max-width: 680px; }
.eyebrow { margin: 0 0 12px; color: var(--cyan); font-size: 0.78rem; font-weight: 760; letter-spacing: 0.14em; text-transform: uppercase; }
h1 { margin: 0; max-width: 660px; font-size: clamp(3.1rem, 8vw, 6.7rem); line-height: 0.9; letter-spacing: -0.08em; }
.lede { margin: 22px 0 0; color: var(--muted); font-size: clamp(1.06rem, 2vw, 1.28rem); }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.note { margin: 14px 0 0; color: var(--faint); font-size: 0.9rem; }

.section { padding: 54px 0 72px; border-top: 1px solid var(--line); }
.section-inner { display: grid; grid-template-columns: 0.9fr 1fr; gap: clamp(22px, 5vw, 56px); align-items: center; }
.section h2 { margin: 0; font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1; letter-spacing: -0.06em; }
.section p { margin: 16px 0 0; color: var(--muted); }
.feature-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.feature-list li { padding: 14px 16px; border: 1px solid rgba(235,248,255,0.1); border-radius: 20px; background: rgba(3,8,20,0.28); color: var(--muted); }
.feature-list strong { color: var(--ink); }

.page { max-width: 780px; padding: 52px 0 84px; }
.page h1 { font-size: clamp(2.8rem, 7vw, 5.4rem); }
.doc-card { margin-top: 30px; padding: clamp(22px, 5vw, 40px); border: 1px solid rgba(235,248,255,0.11); border-radius: 28px; background: var(--surface); box-shadow: 0 20px 56px rgba(0,0,0,0.22), inset 0 1px 0 rgba(255,255,255,0.055); backdrop-filter: blur(22px) saturate(0.95); }
.doc-card h2 { margin: 30px 0 8px; }
.doc-card h2:first-child { margin-top: 0; }
.doc-card p, .doc-card li { color: var(--muted); }
.doc-card a { color: var(--cyan); font-weight: 700; }
.feedback-actions { display: grid; gap: 12px; margin: 20px 0; }
.feedback-actions .button { justify-content: flex-start; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 18px; border: 1px solid rgba(235,248,255,0.12); border-radius: 999px; background: var(--surface); color: var(--ink); text-decoration: none; font-weight: 700; }

.footer { border-top: 1px solid var(--line); padding: 24px 0 34px; color: var(--faint); }
.footer-inner { display: flex; justify-content: space-between; gap: 18px; align-items: center; font-size: 0.9rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px; }
.footer a { text-decoration: none; }
.footer a:hover { color: var(--ink); }

@media (max-width: 860px) {
  .section-inner { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .nav-links a:not(.app-store-link) { display: none; }
  .app-store-link { width: 132px; }
  .app-store-link.hero-badge { width: 168px; }
  .hero { padding-top: 24px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}