body {
  margin: 0;
  font-family: Arial, sans-serif;
  color: #1f2937;
}

.site-body {
  position: relative;
  min-height: 100vh;
  background: #f5f7fb;
}

.page-bg {
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(10, 18, 36, 0.72), rgba(10, 18, 36, 0.72)),
    url("/static/images/forum_bg.jpg") center/cover no-repeat;
  z-index: -1;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.topbar {
  background: rgba(15, 23, 42, 0.9);
  color: white;
  padding: 1rem 0;
  backdrop-filter: blur(6px);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  width: 64px;
  height: 64px;
  object-fit: contain;
  background: white;
  border-radius: 10px;
  padding: 4px;
}

.brand {
  font-weight: 700;
  font-size: 1.05rem;
}

.subtitle {
  font-size: 0.9rem;
  opacity: 0.9;
  max-width: 520px;
}

.header-links {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
}

.nav a,
.lang-switcher a {
  color: #bfdbfe;
  text-decoration: none;
  margin-left: 1rem;
}

.nav a:hover,
.lang-switcher a:hover {
  text-decoration: underline;
}

.main-content {
  padding: 2rem 0 3rem;
}

.hero, .card {
  background: rgba(255, 255, 255, 0.92);
  border-radius: 14px;
  padding: 1.25rem;
  margin: 1rem 0;
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.12);
}

.lead {
  font-size: 1.05rem;
  line-height: 1.6;
}

.details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}