:root {
  --bg: #f4fbff;
  --bg-soft: #dff3ff;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-strong: rgba(255, 255, 255, 0.96);
  --line: rgba(15, 23, 42, 0.12);
  --text: #050505;
  --muted: #425466;
  --primary: #7dd3fc;
  --primary-strong: #38bdf8;
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(125, 211, 252, 0.3), transparent 32%),
    radial-gradient(circle at top right, rgba(186, 230, 253, 0.45), transparent 28%),
    linear-gradient(160deg, #ffffff 0%, #f4fbff 48%, #dff3ff 100%);
}

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

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(18px);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.nav {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 1.1rem;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), #e0f2fe);
  color: #050505;
  font-weight: 900;
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.22);
}

.brand-logo {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.22);
  flex: 0 0 auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-links a,
.mobile-links a,
.footer-links a {
  color: #111111;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.mobile-links a:hover,
.footer-links a:hover,
.nav-links a[aria-current="page"],
.mobile-links a[aria-current="page"] {
  color: #0ea5e9;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: none;
  border-radius: 999px;
  padding: 14px 22px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  font-size: 0.96rem;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #050505;
  box-shadow: 0 16px 34px rgba(56, 189, 248, 0.24);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.84);
  color: var(--text);
  border: 1px solid rgba(15, 23, 42, 0.14);
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  border: 1px solid rgba(15, 23, 42, 0.14);
  background: rgba(255, 255, 255, 0.88);
  color: #050505;
  font-size: 1.3rem;
  cursor: pointer;
}

.nav-panel {
  display: none;
}

.site-header.open .nav-panel {
  display: block;
}

.mobile-links {
  display: grid;
  gap: 12px;
  padding: 0 0 18px;
}

.mobile-links a {
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(15, 23, 42, 0.1);
  text-align: left;
}

.site-footer {
  padding: 60px 0 24px;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(234, 247, 255, 0.92);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 20px;
  margin-bottom: 28px;
}

.footer-copy,
.footer-bottom,
.footer-links span {
  color: var(--muted);
}

.footer-links {
  display: grid;
  gap: 12px;
}

.footer-links h4 {
  font-size: 1rem;
  margin: 0 0 4px;
  color: #050505;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  padding-top: 20px;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  font-size: 0.92rem;
}

@media (max-width: 1080px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .nav-links,
  .nav-actions .btn-secondary {
    display: none;
  }

  .menu-toggle {
    display: inline-grid;
    place-items: center;
  }

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

@media (max-width: 560px) {
  .btn,
  .mobile-links a {
    width: 100%;
    justify-content: center;
  }
}