/* PC site header — classic articles-style nav (logo left, links right) */
.site-header,
.art-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: #004396;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.site-header-inner,
.art-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.site-brand,
.art-brand {
  display: flex;
  align-items: center;
  min-width: 0;
  flex: 1;
  text-decoration: none;
  color: #f1f5f9;
}

.site-brand img,
.art-brand img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-brand-text,
.art-brand-text {
  margin-left: 10px;
  min-width: 0;
}

.site-brand-title,
.art-brand-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.2;
  color: #f1f5f9;
}

.site-brand-sub,
.art-brand-sub {
  font-size: 12px;
  line-height: 1.2;
  color: #e2e8f0;
}

.art-brand-tag {
  display: block;
  font-size: 12px;
  color: #bfdbfe;
  margin-top: 2px;
}

.site-nav,
.art-nav,
.art-nav-desktop {
  display: none;
  align-items: center;
  gap: 6px;
}

.art-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
}

.art-menu-btn:active {
  background: rgba(255, 255, 255, 0.12);
}

.art-menu-btn svg {
  display: block;
}

.nav-tab,
.art-nav-link {
  flex-shrink: 0;
  padding: 8px 12px;
  font-size: 14px;
  color: #f1f5f9;
  text-decoration: none;
  white-space: nowrap;
  border-radius: 4px;
  transition: background 0.2s ease;
}

.nav-tab:hover,
.art-nav-link:hover {
  background: rgba(255, 255, 255, 0.08);
}

.nav-tab--active,
.art-nav-link.active {
  background: #015ccd;
  font-weight: 600;
}

.nav-more-btn,
.art-nav-more {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  font-size: 14px;
  font-weight: 600;
  color: #172554;
  background: #fbbf24;
  border-radius: 999px;
  text-decoration: none;
  margin-left: 4px;
  transition: background 0.2s ease;
}

.nav-more-btn:hover,
.art-nav-more:hover {
  background: #f59e0b;
}

@media (max-width: 1023px) {
  .site-brand-sub,
  .art-brand-sub {
    display: none;
  }
}

@media (min-width: 1024px) {
  .art-menu-btn {
    display: none;
  }

  .site-nav,
  .art-nav-desktop {
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .art-brand-tag {
    display: none;
  }

  .site-header-inner,
  .art-header-inner {
    padding: 0 32px;
    min-height: 72px;
  }

  .site-brand,
  .art-brand {
    flex: 0 1 auto;
  }

  .site-brand img,
  .art-brand img {
    width: 50px;
    height: 50px;
  }

  .site-brand-title,
  .art-brand-title {
    font-size: 24px;
  }

  .site-brand-sub,
  .art-brand-sub {
    display: block;
    font-size: 14px;
  }

  .nav-tab,
  .art-nav-link {
    padding: 24px 16px;
    font-size: 16px;
  }
}