:root {
  --navy-900: #0b1526;
  --navy-800: #101f36;
  --navy-700: #16294a;
  --slate-200: #dbe4f0;
  --slate-400: #8fa3c2;
  --accent: #3ea6ff;
  --accent-dark: #1f7fd1;
  --white: #ffffff;
  --max-width: 1100px;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--navy-900);
  color: var(--slate-200);
  line-height: 1.6;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  color: var(--white);
  line-height: 1.25;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  background: rgba(11, 21, 38, 0.9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--white);
}

.logo:hover {
  text-decoration: none;
}

.logo-accent {
  color: var(--accent);
}

.nav {
  display: flex;
  gap: 24px;
}

.nav a {
  color: var(--slate-200);
  font-size: 0.95rem;
}

/* Hero */

.hero {
  padding: 96px 0 72px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  max-width: 760px;
  margin: 0 auto 20px;
}

.hero-sub {
  max-width: 620px;
  margin: 0 auto 32px;
  color: var(--slate-400);
  font-size: 1.05rem;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--navy-900);
}

.btn-primary:hover {
  background: var(--accent-dark);
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 10px 22px;
}

.btn-secondary:hover {
  background: rgba(62, 166, 255, 0.1);
}

/* Products */

.products {
  padding: 64px 0;
  background: var(--navy-800);
}

.products h2, .about h2 {
  text-align: center;
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.section-sub {
  text-align: center;
  color: var(--slate-400);
  margin-bottom: 40px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--navy-700);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.product-card h3 {
  font-size: 1.25rem;
  margin: 0 0 12px;
}

.tld {
  color: var(--slate-400);
  font-weight: 400;
}

.product-card p {
  color: var(--slate-200);
  flex-grow: 1;
  margin-bottom: 20px;
}

.product-card .btn {
  align-self: flex-start;
}

.product-card-upcoming {
  opacity: 0.85;
  border-style: dashed;
}

.badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(62, 166, 255, 0.15);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Platform note */

.platform {
  padding: 40px 0;
  text-align: center;
}

.platform p {
  max-width: 700px;
  margin: 0 auto;
  color: var(--slate-400);
  font-size: 0.98rem;
}

/* About */

.about {
  padding: 64px 0 80px;
  background: var(--navy-800);
}

.about-inner {
  max-width: 700px;
  text-align: center;
}

.about p {
  margin-bottom: 20px;
}

/* Footer */

.site-footer {
  padding: 32px 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-inner p {
  margin: 6px 0;
}

.copyright {
  color: var(--slate-400);
  font-size: 0.85rem;
}

/* Responsive */

@media (max-width: 640px) {
  .nav {
    gap: 14px;
  }

  .nav a {
    font-size: 0.85rem;
  }

  .hero {
    padding: 64px 0 48px;
  }
}