:root {
  --bg: #07111f;
  --panel: #0f1f34;
  --panel-light: #142844;
  --text: #f3f8ff;
  --muted: #a9bad1;
  --blue: #2f8cff;
  --blue-dark: #1269ca;
  --border: rgba(255,255,255,.12);
}

* { box-sizing: border-box; }

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 top, #123a6d 0, var(--bg) 45%, #03070d 100%);
}

a { color: inherit; }

.site-header {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.35rem;
}

.logo-mark, .logo-big {
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 18px 40px rgba(255, 95, 180, .28));
}

.logo-mark {
  width: 46px;
  height: 46px;
}

.logo-big {
  width: 240px;
  height: 240px;
  margin: 0 auto 24px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 9px 13px;
  border-radius: 999px;
}

nav a:hover, nav a.active {
  color: var(--text);
  background: rgba(255,255,255,.08);
}

.hero, .page {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 70px 0 90px;
}

.hero-card, .content-card {
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: 0 24px 80px rgba(0,0,0,.35);
}

.hero-card {
  text-align: center;
  padding: 70px 28px;
}

.content-card {
  padding: 44px;
}

h1 {
  margin: 0 0 14px;
  font-size: clamp(2.4rem, 7vw, 5.2rem);
  line-height: 1;
}

.content-card h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 { margin-top: 34px; }

p, li {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.lead, .tagline {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.22rem;
}

.actions {
  margin-top: 32px;
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 150px;
  padding: 14px 20px;
  border-radius: 999px;
  text-decoration: none;
  background: rgba(255,255,255,.08);
  border: 1px solid var(--border);
  font-weight: 700;
}

.button.primary {
  background: var(--blue);
  border-color: var(--blue);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 32px;
}

.download-card {
  display: block;
  text-decoration: none;
  padding: 24px;
  border-radius: 22px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
}

.download-card:hover { background: rgba(255,255,255,.1); }
.download-card h2 { margin-top: 0; }
.download-card span { color: #80c2ff; font-weight: 800; }
.contact-card a { color: #8cc8ff; }

footer {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 0 0 28px;
  text-align: center;
}

@media (max-width: 720px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .hero, .page { padding-top: 36px; }
  .content-card { padding: 28px; }
  .logo-big { width: 180px; height: 180px; }
}