/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.9);
  box-shadow: var(--shadow-xs);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 20px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  transition: opacity var(--transition);
}
.logo:hover { opacity: 0.88; }
.logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  box-shadow: 0 4px 12px rgba(232, 93, 4, 0.28);
  position: relative;
  flex-shrink: 0;
}
.logo-icon::before {
  content: '';
  position: absolute;
  inset: 9px 8px 11px 8px;
  border: 2px solid rgba(255, 255, 255, 0.95);
  border-radius: 6px 6px 3px 3px;
}
.logo-icon::after {
  content: '';
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  bottom: 8px;
  right: 9px;
}
.logo-text { line-height: 1; }
.nav {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
}
.nav > a,
.nav-item > a {
  padding: 8px 14px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  font-weight: 500;
  transition: color var(--transition), background var(--transition);
}
.nav > a:hover,
.nav-item > a:hover,
.nav-item.is-open > a {
  color: var(--color-text);
  background: var(--color-surface-2);
}
.nav > a.active,
.nav-item.is-active > a,
.nav-item > a.active {
  color: var(--color-primary);
  background: var(--color-primary-soft);
  font-weight: 600;
}

/* 导航悬停展开（资讯分类 / 浏览类型） */
.nav-item {
  position: relative;
}
.nav-dropdown {
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%) translateY(6px);
  min-width: 280px;
  padding-top: 10px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.16s ease, visibility 0.16s ease, transform 0.16s ease;
  z-index: 120;
}
.nav-item:hover .nav-dropdown,
.nav-item:focus-within .nav-dropdown,
.nav-item.is-open .nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown-panel {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 14px 14px 12px;
}
.nav-dropdown-heading {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}
.nav-dropdown-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}
.nav-dropdown-link {
  display: block;
  padding: 8px 10px;
  border-radius: var(--radius);
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.3;
  transition: color var(--transition), background var(--transition);
}
.nav-dropdown-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}
.nav-dropdown-link.is-current {
  color: var(--color-primary);
  background: var(--color-primary-soft);
  font-weight: 600;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), color var(--transition);
  font-family: inherit;
  line-height: 1.2;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-on-primary);
  box-shadow: 0 4px 14px rgba(232, 93, 4, 0.25);
}
.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(232, 93, 4, 0.32);
}
.btn-sm { padding: 7px 14px; font-size: 13px; }
.btn-block { width: 100%; }
.btn-outline {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-soft);
}
.btn-danger {
  background: var(--color-surface);
  border: 1px solid var(--color-danger);
  color: var(--color-danger);
}
.btn-danger:hover {
  background: var(--color-danger);
  color: #fff;
}

/* Category tag */
.category-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  background: linear-gradient(180deg, #fff7ed 0%, #ffedd5 100%);
  color: #c2410c;
  border: 1px solid rgba(232, 93, 4, 0.16);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Model card grid */
.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 22px;
}
.model-card {
  position: relative;
  background:
    linear-gradient(180deg, #ffffff 0%, #fcfcfd 100%);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: var(--shadow-sm);
  transition:
    transform 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    border-color 0.28s ease;
  cursor: pointer;
  display: block;
  text-decoration: none;
  color: inherit;
  isolation: isolate;
}
.model-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
}
.model-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232, 93, 4, 0.28);
}
.model-card:focus-visible {
  outline: none;
  border-color: rgba(232, 93, 4, 0.45);
  box-shadow: var(--focus-ring), var(--shadow-md);
}
.model-card-media {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 80% at 50% 0%, #fff7ed 0%, transparent 55%),
    linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
}
.model-card-media::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 36%;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.55));
  pointer-events: none;
}
.model-card-img {
  aspect-ratio: 4/3;
  object-fit: contain;
  width: 100%;
  display: block;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.model-card:hover .model-card-img {
  transform: scale(1.04);
}
.model-card-img.is-loading {
  background: #eef2f7;
  animation: model-img-pulse 1.2s ease-in-out infinite;
}
@keyframes model-img-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.72; }
}
.model-card-body { padding: 14px 16px 18px; }
.model-card-brand {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}
.model-card-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--color-text);
}
.model-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 10px;
}
.model-card-spec {
  padding: 2px 0;
}
.model-card-summary {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 8px;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Brand grid */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}
.brand-card {
  position: relative;
  background:
    linear-gradient(165deg, #ffffff 0%, #fffaf5 100%);
  border-radius: var(--radius-xl);
  padding: 22px 14px 18px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition:
    transform 0.28s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.28s ease,
    border-color 0.28s ease;
  border: 1px solid rgba(15, 23, 42, 0.06);
  cursor: pointer;
  display: block;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
}
.brand-card::before {
  content: '';
  position: absolute;
  inset: auto -30% -45% auto;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 93, 4, 0.12) 0%, transparent 70%);
  pointer-events: none;
  transition: transform 0.35s ease;
}
.brand-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232, 93, 4, 0.28);
}
.brand-card:hover::before {
  transform: translate(-10px, -8px) scale(1.15);
}
.brand-card:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring), var(--shadow-md);
}
.brand-card-logo {
  width: 56px;
  height: 56px;
  margin: 0 auto 12px;
  border-radius: 16px;
  background: linear-gradient(160deg, #fff7ed 0%, #ffedd5 100%);
  border: 1px solid rgba(232, 93, 4, 0.14);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: #c2410c;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
  transition: transform 0.28s ease;
}
.brand-card:hover .brand-card-logo {
  transform: scale(1.05);
}
.brand-card-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.brand-card-name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand-card-count {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* Compact brand cards (home) */
.brand-grid-compact {
  grid-template-columns: repeat(auto-fill, minmax(92px, 1fr));
  gap: 12px;
}
.brand-grid-compact .brand-card {
  padding: 14px 8px 12px;
  border-radius: var(--radius-lg);
}
.brand-grid-compact .brand-card-logo {
  width: 40px;
  height: 40px;
  margin-bottom: 8px;
  border-radius: 12px;
  font-size: 15px;
}
.brand-grid-compact .brand-card-name { font-size: 12px; font-weight: 700; }
.brand-grid-compact .brand-card-count { font-size: 10px; margin-top: 2px; }

.brand-load-more-tail {
  border-style: dashed;
  background: linear-gradient(180deg, #fafafa 0%, #fff 100%);
  color: inherit;
  font: inherit;
  width: 100%;
}
.brand-load-more-tail:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.brand-load-more-tail:disabled {
  opacity: 0.6;
  cursor: wait;
}
.brand-load-more-tail .brand-card-logo {
  background: transparent;
  border: 1px dashed var(--color-border-strong);
  color: var(--color-text-muted);
  font-size: 20px;
  font-weight: 400;
  box-shadow: none;
}

/* Compact model cards (home recommendations) */
.model-grid-compact {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}
.model-grid-compact .model-card-body { padding: 12px 14px 14px; }
.model-grid-compact .model-card-title { font-size: 14px; }
.model-grid-compact .model-card-brand { font-size: 10px; }
.model-grid-compact .model-card-meta { font-size: 11px; margin-top: 8px; }
.model-grid-compact .model-card-summary { display: none; }
.model-grid-compact .model-card-img { aspect-ratio: 16/10; }

.home-recommend .model-grid-compact {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 18px;
}

@media (prefers-reduced-motion: reduce) {
  .model-card,
  .model-card-img,
  .brand-card,
  .brand-card-logo,
  .brand-card::before {
    transition: none;
  }
  .model-card:hover,
  .brand-card:hover {
    transform: none;
  }
  .model-card:hover .model-card-img {
    transform: none;
  }
}

/* Admin standalone header */
.admin-only-header .admin-logo-text { cursor: default; }
.admin-only-footer { margin-top: 32px; font-size: 12px; }

/* Footer */
.footer {
  margin-top: auto;
  padding: 32px 0 40px;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  line-height: 1.8;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.65));
}
.footer p + p { margin-top: 4px; }
.footer-icp {
  margin-top: 10px;
  font-size: 12px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 6px 10px;
}
.footer-icp-sep {
  color: var(--color-border-strong);
  user-select: none;
}
.footer-icp a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.footer-icp a:hover { color: var(--color-primary); }
.footer-beian-mps {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.footer-beian-icon {
  width: auto;
  height: 16px;
  flex-shrink: 0;
  vertical-align: middle;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.pagination button {
  min-width: 40px;
  padding: 8px 14px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.pagination button:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-soft);
}
.pagination button.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(232, 93, 4, 0.22);
}
.pagination button:disabled { opacity: .45; cursor: not-allowed; }
.pagination-info { font-size: 13px; color: var(--color-text-muted); }

/* Spec table */
.spec-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}
.spec-table th,
.spec-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}
.spec-table th {
  width: 140px;
  color: var(--color-text);
  font-weight: 600;
  background: var(--color-surface-2);
}
.spec-table tr:last-child th,
.spec-table tr:last-child td { border-bottom: none; }

/* Markdown body */
.markdown-body { line-height: 1.8; font-size: 15px; }
.markdown-body h2 {
  font-size: 18px;
  margin: 24px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}
.markdown-body h2:first-child { margin-top: 0; }
.markdown-body p { margin-bottom: 12px; }
.markdown-body ul, .markdown-body ol { margin: 0 0 12px 20px; }
.markdown-body li { margin-bottom: 4px; }
.markdown-body strong { font-weight: 600; }