:root {
  --shell-top: #11444a;
  --shell-mid: #2bbfb5;
  --shell-bottom: #eef8f7;
  --shell-panel: rgba(8, 26, 33, 0.28);
  --shell-border: rgba(255, 255, 255, 0.18);
  --shell-text: #ffffff;
  --shell-muted: rgba(255, 255, 255, 0.82);
  --shell-active: #0e5c63;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-family: "DM Sans", system-ui, sans-serif;
  background:
    radial-gradient(circle at 8% 18%, rgba(255,255,255,0.12) 0, rgba(255,255,255,0.12) 115px, transparent 116px),
    radial-gradient(circle at 89% 18%, rgba(255,255,255,0.12) 0, rgba(255,255,255,0.12) 145px, transparent 146px),
    linear-gradient(180deg, var(--shell-top) 0%, var(--shell-mid) 55%, var(--shell-bottom) 100%);
}

.variant-header-shell {
  flex: 0 0 auto;
  padding: 16px 16px 0;
}

.variant-header {
  max-width: 1240px;
  margin: 0 auto;
  border-radius: 28px;
  padding: 20px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--shell-panel);
  border: 1px solid var(--shell-border);
  backdrop-filter: blur(8px);
}

.variant-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: inherit;
}

.variant-brand img {
  width: 68px;
  height: 68px;
  border-radius: 18px;
  object-fit: cover;
}

.variant-brand-name {
  margin: 0;
  color: var(--shell-text);
  font-family: "Sora", system-ui, sans-serif;
  font-size: 2rem;
  font-weight: 800;
}

.variant-brand-tag {
  margin: 4px 0 0;
  color: var(--shell-muted);
  font-size: 1rem;
  font-weight: 600;
}

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

.variant-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--shell-border);
  color: var(--shell-text);
  text-decoration: none;
  font-weight: 700;
  background: transparent;
}

.variant-nav a.active {
  background: var(--shell-active);
  border-color: transparent;
}

#root {
  display: flex;
  flex: 1;
  min-height: 0;
}

@media (max-width: 960px) {
  .variant-header {
    padding: 18px;
  }

  .variant-brand-name {
    font-size: 1.6rem;
  }

  .variant-brand img {
    width: 56px;
    height: 56px;
    border-radius: 16px;
  }
}