:root {
  --brand-ink: #f5f7fb;
  --brand-soft: #c9d4e8;
  --brand-line: #2b3a56;
  --brand-paper: #0b1222;
  --brand-accent: #c5162e;
  --brand-accent-deep: #951123;
  --brand-accent-soft: #ffd8de;
}

html,
body {
  background:
    radial-gradient(circle at 14% 0%, rgba(79, 99, 137, 0.24) 0%, rgba(79, 99, 137, 0) 32%),
    radial-gradient(circle at 86% 10%, rgba(197, 22, 46, 0.16) 0%, rgba(197, 22, 46, 0) 22%),
    linear-gradient(158deg, #121b2f 0%, #0a101d 100%) !important;
  color: var(--brand-ink);
  font-family: "Manrope", "Segoe UI", sans-serif !important;
}

.shell-wrap {
  width: min(1160px, 92vw);
  margin: 0 auto;
}

.site-shell-header {
  position: sticky;
  top: 0;
  z-index: 40;
  padding: 16px 0;
  border-bottom: 1px solid #23314d;
  background: rgba(11, 18, 34, 0.88);
  backdrop-filter: blur(12px);
}

.site-shell-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.site-shell-brand img {
  width: min(280px, 58vw);
  height: auto;
  display: block;
}

.site-shell-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.site-shell-links a {
  border: 1px solid #334669;
  border-radius: 999px;
  padding: 6px 11px;
  background: rgba(18, 29, 51, 0.92);
  color: var(--brand-soft);
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
}

.site-shell-links a.current {
  border-color: rgba(197, 22, 46, 0.32);
  background: rgba(197, 22, 46, 0.12);
  color: var(--brand-accent-soft);
}

.site-shell-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 1px solid transparent;
  padding: 11px 15px;
  font-weight: 700;
  line-height: 1.1;
  text-decoration: none;
  white-space: nowrap;
  background: linear-gradient(145deg, var(--brand-accent), var(--brand-accent-deep));
  color: #fff;
  box-shadow: 0 14px 30px rgba(197, 22, 46, 0.26);
}

.site-shell-footer {
  border-top: 1px solid var(--brand-line);
  color: #aab8cf;
  font-size: 0.88rem;
  padding: 16px 0 26px;
}

@media (max-width: 980px) {
  .site-shell-brand img {
    width: min(220px, 70vw);
  }
}