:root {
  color-scheme: dark;
  --bg: #07111f;
  --panel: #0e1b2d;
  --panel-2: #13243a;
  --text: #f3f7fb;
  --muted: #a9b8ca;
  --accent: #43d7ff;
  --accent-2: #8b5cf6;
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 8%, rgba(67, 215, 255, 0.15), transparent 30rem),
    radial-gradient(circle at 88% 4%, rgba(139, 92, 246, 0.16), transparent 28rem),
    var(--bg);
  line-height: 1.65;
}
a { color: var(--accent); }
a:hover { color: #9cecff; }
img { max-width: 100%; }
.shell { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background: rgba(7, 17, 31, 0.86);
  backdrop-filter: blur(18px);
}
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; font-weight: 800; }
.brand-mark { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 11px; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #06101d; }
.nav-links { display: flex; gap: 18px; flex-wrap: wrap; }
.nav-links a { color: var(--muted); text-decoration: none; font-weight: 650; }
.nav-links a:hover { color: var(--text); }
.hero { padding: 96px 0 64px; }
.eyebrow { color: var(--accent); font-size: .82rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -.025em; }
h1 { max-width: 850px; margin: 16px 0 20px; font-size: clamp(2.6rem, 7vw, 5.8rem); }
h2 { margin: 0 0 18px; font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { margin-top: 0; font-size: 1.3rem; }
.lead { max-width: 720px; color: var(--muted); font-size: clamp(1.08rem, 2.4vw, 1.35rem); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 22px; }
.card { border: 1px solid var(--border); border-radius: 24px; background: linear-gradient(145deg, rgba(19,36,58,.94), rgba(14,27,45,.86)); box-shadow: var(--shadow); overflow: hidden; }
.card-body { padding: 28px; }
.app-card { display: grid; grid-template-columns: 92px 1fr; align-items: center; gap: 24px; }
.app-icon { width: 92px; height: 92px; border-radius: 22px; box-shadow: 0 18px 40px rgba(0,0,0,.3); }
.button { display: inline-flex; align-items: center; justify-content: center; margin-top: 10px; padding: 11px 17px; border-radius: 999px; background: var(--accent); color: #06101d; font-weight: 800; text-decoration: none; }
.button:hover { color: #06101d; background: #91ebff; }
.button.secondary { border: 1px solid var(--border); background: transparent; color: var(--text); }
.section { padding: 44px 0 76px; }
.prose { width: min(820px, calc(100% - 32px)); margin: 0 auto; padding: 70px 0; }
.prose header { margin-bottom: 38px; }
.prose section { margin-top: 38px; padding-top: 8px; }
.prose p, .prose li { color: #c5d1df; }
.prose li + li { margin-top: 8px; }
.meta { color: var(--muted); font-size: .94rem; }
.app-heading { display: flex; align-items: center; gap: 20px; }
.app-heading .app-icon { width: 76px; height: 76px; border-radius: 18px; }
.notice { padding: 18px 20px; border-left: 4px solid var(--accent); border-radius: 12px; background: rgba(67, 215, 255, .08); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.footer { margin-top: 70px; padding: 28px 0 44px; border-top: 1px solid var(--border); color: var(--muted); font-size: .92rem; }
@media (max-width: 640px) {
  .nav { align-items: flex-start; padding: 16px 0; }
  .nav-links { justify-content: flex-end; }
  .hero { padding-top: 68px; }
  .app-card { grid-template-columns: 68px 1fr; }
  .app-card .app-icon { width: 68px; height: 68px; border-radius: 17px; }
}

.placeholder { display:grid; place-items:center; background:linear-gradient(135deg,var(--accent),var(--accent-2)); color:#06101d; font-size:2.4rem; font-weight:900; }
.card p { color:var(--muted); }