/* 知识库等内页的扩展样式 */

.page-main {
  max-width: 900px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 32px) 24px 64px;
}

.page-hero {
  margin-bottom: 40px;
  text-align: center;
}

.page-hero h1 {
  font-size: 1.85rem;
  margin: 0 0 8px;
}

.page-hero p {
  color: var(--text-muted);
  margin: 0;
}

/* 知识库目录 */
.kb-toc {
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 32px;
  box-shadow: var(--shadow);
}

.kb-toc h2 {
  font-size: 1rem;
  margin: 0 0 12px;
}

.kb-toc ol {
  margin: 0;
  padding-left: 1.25em;
}

.kb-toc li {
  margin-bottom: 6px;
}

.kb-section {
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}

.kb-section h2 {
  font-size: 1.35rem;
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--card-border);
}

.kb-section h3 {
  font-size: 1.1rem;
  margin: 24px 0 10px;
  color: var(--primary);
}

.kb-section h4 {
  font-size: 1rem;
  margin: 16px 0 8px;
}

.kb-section p,
.kb-section li {
  font-size: 0.95rem;
  color: #374151;
}

.kb-section ul,
.kb-section ol {
  padding-left: 1.3em;
}

.kb-section code {
  background: #f3e8ff;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

.kb-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 12px 0 20px;
}

.kb-table th,
.kb-table td {
  border: 1px solid var(--card-border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

.kb-table th {
  background: #faf5ff;
  font-weight: 600;
}

.kb-table tr:nth-child(even) td {
  background: #fdfcff;
}

.kb-tip {
  background: #ecfdf5;
  border-left: 4px solid var(--success);
  padding: 12px 16px;
  margin: 16px 0;
  border-radius: 0 8px 8px 0;
  font-size: 0.9rem;
}

.kb-warn {
  background: #fff7ed;
  border-left: 4px solid var(--accent);
  padding: 12px 16px;
  margin: 16px 0;
  border-radius: 0 8px 8px 0;
  font-size: 0.9rem;
}

.nav-links a.nav-active {
  color: var(--primary);
  font-weight: 700;
}

/* —— 前台会员套餐页 —— */
.page-main--plans {
  max-width: 1280px;
  padding-top: calc(var(--nav-h, 64px) + 24px);
}

.plans-layout {
  display: grid;
  grid-template-columns: 252px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.plans-sidebar {
  position: sticky;
  top: calc(var(--nav-h, 64px) + 20px);
  padding: 22px 18px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 40px rgba(6, 10, 38, 0.08);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.plans-sidebar-head {
  padding-bottom: 16px;
  margin-bottom: 14px;
  border-bottom: 1px solid rgba(139, 92, 246, 0.12);
}

.plans-sidebar-title {
  margin: 0 0 8px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.02em;
}

.plans-sidebar-desc {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.plans-sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.plans-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 0.92rem;
  font-weight: 600;
  color: #4b5563;
  text-decoration: none;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
}

.plans-nav-link:hover {
  background: #f5f3ff;
  color: var(--primary);
  text-decoration: none;
}

.plans-nav-link.is-active {
  background: linear-gradient(135deg, #ede9fe, #fdf2f8);
  color: #5b21b6;
  box-shadow: inset 0 0 0 1px #ddd6fe;
}

.plans-nav-icon {
  font-size: 1.05rem;
  line-height: 1;
}

.plans-sidebar-tip {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed #e9d5ff;
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.plans-main {
  min-width: 0;
}

.plans-empty {
  text-align: center;
  padding: 3rem 1.5rem;
  background: #fff;
  border: 1px dashed var(--card-border);
  border-radius: var(--radius);
  color: var(--text-muted);
}

.plans-empty--inline {
  margin-top: 0;
}

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  align-items: stretch;
}

.plans-card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(233, 213, 255, 0.8);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(139, 92, 246, 0.08);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.plans-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(139, 92, 246, 0.14);
  border-color: #c4b5fd;
}

.plans-card--featured {
  border-color: #a78bfa;
  box-shadow: 0 12px 36px rgba(139, 92, 246, 0.16);
}

.plans-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 1;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #8b5cf6, #ec4899);
  box-shadow: 0 4px 12px rgba(236, 72, 153, 0.35);
}

.plans-card-head {
  padding: 26px 24px 18px;
  border-bottom: 1px solid #f3e8ff;
  background: linear-gradient(180deg, #faf5ff 0%, #fff 100%);
}

.plans-card--vip .plans-card-head {
  background: linear-gradient(180deg, #f5f3ff 0%, #fff 100%);
}

.plans-card--svip .plans-card-head {
  background: linear-gradient(180deg, #fdf2f8 0%, #fff 100%);
}

.plans-card--enterprise .plans-card-head {
  background: linear-gradient(180deg, #eff6ff 0%, #fff 100%);
}

.plans-card-type {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 8px;
}

.plans-card-name {
  margin: 0 0 12px;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.02em;
}

.plans-card-price-row {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 14px;
}

.plans-card-price {
  margin: 0;
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.plans-card-meta {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.plans-card-blurb {
  margin: 14px 0 0;
  font-size: 0.88rem;
  color: #4b5563;
  line-height: 1.55;
}

.plans-card-foot {
  padding: 20px 24px 24px;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid #f3e8ff;
}

.plans-card-btn {
  display: block;
  width: 100%;
  text-align: center;
  padding: 12px 16px;
  font-weight: 700;
  border-radius: 10px;
}

.plans-card-compare-link {
  display: block;
  text-align: center;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
}

.plans-card-compare-link:hover {
  text-decoration: underline;
}
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(233, 213, 255, 0.8);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(139, 92, 246, 0.08);
  overflow: hidden;
}

.plans-compare-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.plans-compare-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.plans-compare-table th,
.plans-compare-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #f3e8ff;
  text-align: center;
  vertical-align: middle;
}

.plans-compare-table thead th {
  background: linear-gradient(180deg, #faf5ff, #fff);
  font-weight: 700;
  color: var(--dark);
}

.plans-compare-sticky {
  position: sticky;
  left: 0;
  z-index: 2;
  text-align: left !important;
  background: #fff;
  box-shadow: 4px 0 8px rgba(0, 0, 0, 0.04);
}

.plans-compare-table thead .plans-compare-sticky {
  background: #faf5ff;
}

.plans-compare-plan-name {
  display: block;
  font-size: 0.95rem;
}

.plans-compare-plan-price {
  display: block;
  margin-top: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
}

.plans-compare-feature-label {
  font-weight: 500;
  color: #374151;
  min-width: 160px;
}

.plans-compare-cat-row td {
  background: #f5f3ff;
  font-size: 0.78rem;
  font-weight: 700;
  color: #5b21b6;
  text-align: left !important;
  letter-spacing: 0.02em;
}

.plans-compare-cell {
  width: 120px;
}

.plans-compare-yes {
  color: #059669;
  font-weight: 800;
  font-size: 1rem;
}

.plans-compare-no {
  color: #d1d5db;
}

.plans-compare-buy-row td {
  background: #fdfcff;
  border-bottom: none;
  padding-top: 16px;
  padding-bottom: 16px;
}

.plans-compare-buy-row .plans-compare-sticky {
  background: #fdfcff;
}

.plans-compare-buy-btn {
  white-space: nowrap;
  max-width: 100%;
  padding-left: 10px;
  padding-right: 10px;
}

.plans-footnote {
  margin-top: 24px;
  padding: 16px 20px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid #ede9fe;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: left;
  line-height: 1.7;
}

.plans-footnote p {
  margin: 0 0 0.5rem;
}

.plans-footnote p:last-child {
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .plans-layout {
    grid-template-columns: 1fr;
  }

  .plans-sidebar {
    position: static;
  }

  .plans-sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .plans-nav-link {
    flex: 1 1 auto;
    justify-content: center;
    min-width: 140px;
  }
}

@media (max-width: 640px) {
  .plans-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .plans-compare-buy-btn {
    white-space: normal;
    font-size: 0.78rem;
    line-height: 1.3;
  }
}