:root {
  --bg-main: #05070b;
  --bg-alt: #0b0f18;
  --bg-elevated: #111827;
  --border-subtle: #1f2937;
  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --accent: #00e0ff;
  --accent-soft: rgba(0, 224, 255, 0.15);
  --accent-strong: #38bdf8;
  --danger: #f97373;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-soft: 0 20px 60px rgba(0, 0, 0, 0.6);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background: radial-gradient(circle at top, #111827 0, #020617 55%, #000 100%);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

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

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.85), transparent);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  width: 44px;
  height: 44px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-name {
  font-weight: 700;
  letter-spacing: 0.2em;
  font-size: 12px;
}

.brand-sub {
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--text-muted);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 14px;
}

.nav-link {
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--text-muted);
  border: 1px solid transparent;
  transition: all 0.18s ease;
}

.nav-link:hover {
  color: var(--text-main);
  border-color: rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.9);
}

.nav-link.active {
  color: var(--bg-main);
  background: var(--accent);
  border-color: var(--accent);
}

.nav-cta {
  border-color: rgba(148, 163, 184, 0.7);
}

/* Hero */

.hero {
  padding: 56px 0 40px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: rgba(148, 163, 184, 0.12);
  color: var(--text-muted);
}

.hero h1 {
  margin: 18px 0 14px;
  font-size: 32px;
  line-height: 1.2;
}

.hero-sub {
  margin: 0 0 20px;
  color: var(--text-muted);
  max-width: 520px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.hero-footnote {
  font-size: 13px;
  color: var(--text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: transparent;
  cursor: pointer;
  transition: all 0.18s ease;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #020617;
  border-color: transparent;
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.5);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 45px rgba(56, 189, 248, 0.5);
}

.btn.ghost {
  color: var(--text-main);
  background: rgba(15, 23, 42, 0.8);
}

.btn.large {
  padding-inline: 24px;
  height: 44px;
}

.hero-visual {
  position: relative;
  min-height: 260px;
}

.orb {
  position: absolute;
  border-radius: 999px;
  filter: blur(0);
}

.orb-main {
  width: 220px;
  height: 220px;
  top: 12%;
  left: 16%;
  background: radial-gradient(circle at 30% 20%, #22d3ee 0, #0f172a 60%, transparent 100%);
  box-shadow: 0 0 120px rgba(34, 211, 238, 0.55);
}

.orb-sub {
  width: 120px;
  height: 120px;
  right: 6%;
  bottom: 8%;
  background: radial-gradient(circle at 40% 30%, #38bdf8 0, #020617 60%, transparent 100%);
  box-shadow: 0 0 80px rgba(56, 189, 248, 0.6);
}

.grid-card {
  position: relative;
  margin-top: 70px;
  padding: 18px 18px 16px;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top left, rgba(34, 211, 238, 0.18), rgba(15, 23, 42, 0.98));
  border: 1px solid rgba(148, 163, 184, 0.3);
  box-shadow: var(--shadow-soft);
}

.grid-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.grid-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

.grid-card li + li {
  margin-top: 4px;
}

.dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
  margin-right: 6px;
}

/* Sections */

.section {
  padding: 40px 0;
}

.section-alt {
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.96) 0, rgba(15, 23, 42, 0.9) 40%, rgba(15, 23, 42, 0.85) 100%);
  border-top: 1px solid rgba(15, 23, 42, 1);
  border-bottom: 1px solid rgba(15, 23, 42, 1);
}

.section-header {
  text-align: left;
  margin-bottom: 22px;
}

.section-header h2 {
  margin: 0 0 6px;
}

.section-header p {
  margin: 0;
  color: var(--text-muted);
}

/* Cards */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.card {
  padding: 18px 16px 16px;
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.96));
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 16px;
}

.card p {
  margin: 0 0 10px;
  color: var(--text-muted);
  font-size: 13px;
}

.card-points {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

.card-points li + li {
  margin-top: 4px;
}

/* Trust section */

.trust-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 32px;
}

.trust-highlights {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.trust-item {
  padding: 10px 12px;
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.25);
  font-size: 13px;
}

.trust-label {
  display: block;
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.trust-value {
  font-size: 13px;
}

/* CTA */

.section-cta .cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* Page hero */

.page-hero {
  padding: 52px 0 16px;
}

.page-hero .lead {
  color: var(--text-muted);
}

.narrow {
  max-width: 720px;
}

/* Two-column / products / contact */

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
}

.tag-list li {
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.4);
  font-size: 12px;
  color: var(--text-muted);
}

.bullet-list {
  margin: 0;
  padding-left: 18px;
  color: var(--text-muted);
  font-size: 13px;
}

.bullet-list li + li {
  margin-top: 4px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.product-card {
  padding: 20px 18px 16px;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(15, 23, 42, 1), rgba(15, 23, 42, 0.96));
  border: 1px solid rgba(148, 163, 184, 0.28);
  box-shadow: var(--shadow-soft);
}

.product-card h2 {
  margin: 0 0 8px;
}

.product-card p {
  margin: 0 0 12px;
  color: var(--text-muted);
}

.product-sub {
  font-size: 13px;
  margin-bottom: 6px;
}

/* Contact */

.contact-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.contact-email a {
  color: var(--accent);
}

/* Footer */

.site-footer {
  border-top: 1px solid rgba(15, 23, 42, 1);
  background: rgba(3, 7, 18, 0.98);
  padding: 18px 0;
  margin-top: 10px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 14px;
}

.footer-links a {
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--accent);
}

/* Responsive */

@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero-visual {
    order: -1;
  }
  .cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .trust-grid,
  .two-column,
  .product-grid,
  .contact-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .section-cta .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 10px;
  }
  .main-nav {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
  .hero h1 {
    font-size: 26px;
  }
  .cards-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .product-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}