:root {
  --bg: #07111f;
  --bg-soft: #0e1b2d;
  --card: rgba(255, 255, 255, 0.06);
  --text: #f4f7fb;
  --muted: #aab7c8;
  --accent: #f59e0b;
  --accent-strong: #ffb347;
  --border: rgba(255, 255, 255, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, var(--bg), #13263f 60%, #0a1729);
  color: var(--text);
  line-height: 1.7;
}

img {
  max-width: 100%;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(7, 17, 31, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.site-nav {
  display: flex;
  gap: 1.25rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}

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

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 0.25rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
}

.hero {
  padding: 5rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 0.8rem;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
  font-weight: 700;
}

h1,
h2,
h3,
h4 {
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin: 0 0 1rem;
}

.hero-copy,
.section-heading p,
.about-grid p,
.card p,
.metrics-box span,
.site-footer p {
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.btn:hover {
  transform: translateY(-3px) scale(1.01);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
}

.btn-primary {
  background: var(--accent);
  color: #0c1420;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.hero-card,
.card,
.metrics-box,
.quality-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.hero-card:hover,
.card:hover,
.metrics-box:hover,
.quality-panel:hover {
  transform: translateY(-4px);
  border-color: rgba(245, 158, 11, 0.45);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
}

.hero-card ul {
  padding-left: 1rem;
  margin: 0;
}

.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.03);
}

.section-heading {
  margin-bottom: 1.8rem;
}

.section-heading h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0;
}

.about-grid,
.quality-grid,
.footer-grid {
  display: grid;
  gap: 1.5rem;
}

.about-grid {
  grid-template-columns: repeat(2, 1fr);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.product-stack {
  display: grid;
  gap: 1.25rem;
}

.product-card {
  padding: 1.6rem;
}

.role {
  color: var(--accent-strong);
  font-weight: 700;
  margin-top: -0.3rem;
}

.quality-panel {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: center;
  padding: 2rem;
}

.quality-list {
  padding-left: 1.1rem;
  color: var(--muted);
  margin: 1rem 0 0;
}

.quality-list li {
  margin-bottom: 0.5rem;
}

.metrics-box {
  display: grid;
  gap: 1rem;
}

.metrics-box strong {
  display: block;
  font-size: 1.3rem;
  color: var(--accent-strong);
}

.site-footer {
  padding: 3rem 0 4rem;
  border-top: 1px solid var(--border);
}

.footer-grid {
  grid-template-columns: repeat(4, 1fr);
}

.site-footer h3,
.site-footer h4 {
  margin-bottom: 0.6rem;
}

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .quality-panel,
  .footer-grid,
  .card-grid,
  .about-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-bar {
    padding: 0.9rem 0;
  }

  .hero {
    padding: 3.5rem 0 3rem;
  }

  .section {
    padding: 3.5rem 0;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 700px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(7, 17, 31, 0.98);
    padding: 1rem;
    border-bottom: 1px solid var(--border);
  }

  .site-nav.open {
    display: flex;
  }

  .hero {
    padding-top: 3rem;
  }

  .site-header {
    position: sticky;
  }

  .brand {
    font-size: 1.1rem;
  }

  .section-heading h2 {
    font-size: 1.45rem;
  }

  .hero-card,
  .card,
  .metrics-box,
  .quality-panel {
    padding: 1.25rem;
  }
}