:root {
  color-scheme: light dark;
  --bg: #0b1020;
  --bg-soft: #111831;
  --card: rgba(255,255,255,.08);
  --card-border: rgba(255,255,255,.12);
  --text: #f7f8fb;
  --muted: #aeb7cc;
  --accent: #6ea8ff;
  --accent-2: #9e7cff;
  --shadow: 0 22px 60px rgba(0,0,0,.28);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
               "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 18% 0%, rgba(110,168,255,.18), transparent 34%),
    radial-gradient(circle at 88% 8%, rgba(158,124,255,.18), transparent 30%),
    var(--bg);
  color: var(--text);
}

a { color: inherit; text-decoration: none; }

.container {
  width: min(1080px, calc(100% - 36px));
  margin: 0 auto;
}

nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  background: rgba(11,16,32,.72);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.nav-inner {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -.02em;
}

.logo {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 10px 30px rgba(110,168,255,.25);
}

.nav-links {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover { color: var(--text); }

.hero {
  padding: 92px 0 54px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border: 1px solid var(--card-border);
  background: var(--card);
  border-radius: 999px;
  color: #cdd6ea;
  font-size: 13px;
  font-weight: 700;
}

h1 {
  margin: 20px 0 14px;
  max-width: 820px;
  font-size: clamp(42px, 7vw, 74px);
  line-height: .98;
  letter-spacing: -.05em;
}

h2 {
  margin: 0 0 12px;
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -.035em;
}

h3 {
  margin: 0 0 10px;
  font-size: 22px;
  letter-spacing: -.02em;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(18px, 2.3vw, 22px);
  line-height: 1.55;
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 17px;
  border-radius: 14px;
  font-weight: 800;
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,.06);
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
}

.section { padding: 42px 0 70px; }

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}

.card {
  grid-column: span 6;
  padding: 26px;
  border: 1px solid var(--card-border);
  background: var(--card);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.card p, .prose p, .prose li {
  color: var(--muted);
  line-height: 1.7;
}

.app-card {
  display: flex;
  align-items: center;
  gap: 18px;
}

.app-icon {
  width: 76px;
  height: 76px;
  border-radius: 19px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 25px;
  background: linear-gradient(145deg, #39a7ff, #4f65ff 60%, #8b5cff);
  box-shadow: inset 0 1px rgba(255,255,255,.35), 0 14px 35px rgba(41,90,255,.27);
}

.meta {
  color: var(--muted);
  font-size: 14px;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 26px;
}

.feature {
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,.045);
}

.feature strong { display: block; margin-bottom: 6px; }

.prose {
  max-width: 860px;
  padding: 34px;
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,.055);
  border-radius: 26px;
  box-shadow: var(--shadow);
}

.prose h2 { margin-top: 34px; font-size: 26px; }
.prose h2:first-child { margin-top: 0; }
.prose ul { padding-left: 22px; }
.prose a { color: #a9caff; text-decoration: underline; text-underline-offset: 3px; }

.notice {
  padding: 16px 18px;
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  background: rgba(110,168,255,.08);
  color: #dce8ff;
}

footer {
  padding: 38px 0 54px;
  color: var(--muted);
  font-size: 14px;
}

.small { font-size: 13px; color: var(--muted); }

@media (max-width: 780px) {
  .nav-links { display: none; }
  .hero { padding-top: 64px; }
  .card { grid-column: 1 / -1; }
  .features { grid-template-columns: 1fr; }
  .prose { padding: 24px; }
}