:root {
  --bg: #070b14;
  --bg-soft: #0f1a2f;
  --card: #121f37;
  --text: #e8edf7;
  --muted: #9fb1ce;
  --primary: #3ad3c1;
  --primary-dark: #1fb8a6;
  --line: #253554;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

* {
  box-sizing: border-box;
}

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

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

body {
  font-family: "Inter", sans-serif;
  background: radial-gradient(circle at top right, #173050 0, var(--bg) 45%);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(1040px, 90%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(7, 11, 20, 0.75);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
  font-size: 1.15rem;
  letter-spacing: 0.08em;
}

.brand-logo {
  width: 24px;
  height: 24px;
  border-radius: 8px;
  object-fit: cover;
}

.main-nav {
  display: flex;
  gap: 1.2rem;
}

.main-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 0.3rem;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  display: block;
}

.hero {
  padding: 4rem 0 2.8rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.2rem;
  align-items: center;
}

.eyebrow {
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 0.8rem;
}

h1 {
  font-size: clamp(1.7rem, 3.2vw, 2.7rem);
  line-height: 1.15;
  margin: 0 0 1rem;
}

h2 {
  margin: 0 0 0.9rem;
  font-size: clamp(1.3rem, 2.4vw, 1.9rem);
  line-height: 1.3;
}

h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.hero-text {
  max-width: 58ch;
}

.hero-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin: 1.4rem 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  padding: 0.75rem 1.2rem;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: #052321;
}

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

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

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.makers {
  margin: 0;
  color: var(--text);
}

.partner-link {
  color: inherit;
  margin: 0 0.15rem;
  text-decoration-color: var(--primary);
  text-underline-offset: 0.18em;
  transition: color 0.2s ease;
}

.partner-link:hover {
  color: var(--primary);
}

.arvion-link {
  color: var(--text);
  text-decoration-color: var(--primary);
  text-underline-offset: 0.18em;
}

.arvion-link:hover {
  color: var(--primary);
}

.card {
  background: linear-gradient(180deg, rgba(26, 41, 68, 0.88), rgba(17, 28, 49, 0.94));
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.2rem;
  box-shadow: var(--shadow);
}

.hero-card .metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.8rem 0;
}

.hero-card .metric:last-child {
  border-bottom: 0;
}

.hero-card span {
  color: var(--muted);
}

.hero-card strong {
  font-size: 1.1rem;
}

.status.online {
  color: #55e09b;
}

.section {
  padding: 4rem 0;
}

.section.muted {
  background: rgba(11, 20, 36, 0.75);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.2rem;
}

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

.benefits-list li {
  margin-bottom: 0.7rem;
}

.contact-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.arvion-block {
  max-width: 760px;
}

.arvion-heading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.arvion-section-logo {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  object-fit: cover;
  border: 1px solid var(--line);
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 1.2rem 0;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-wrap p {
  margin: 0;
  font-size: 0.92rem;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .menu-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    right: 4%;
    background: var(--bg-soft);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 0.9rem;
    width: min(240px, 90vw);
    display: none;
    flex-direction: column;
  }

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

  .feature-grid {
    grid-template-columns: 1fr;
  }
}