/* ============================================================
   products.css — AI产品导航专属样式
   适用：products/ 栏目下所有页面
   ============================================================ */

.product-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  grid-template-rows: auto 1fr;
  gap: 24px;
  max-width: var(--max-width, 1320px);
  margin: 52px auto 0;
  padding: 0 24px;
}
.search-section {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  padding: 0;
}
.search-section .search-box {
  margin: -44px 0 0;
}
.filter-sidebar {
  grid-column: 1;
  grid-row: 1 / 3;
  width: 240px;
  flex-shrink: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  height: fit-content;
  position: sticky;
  top: 80px;
}
.product-main-content {
  grid-column: 2;
  grid-row: 2;
}

.filter-sidebar h3 { font-size: 16px; font-weight: 700; margin-bottom: 16px; }
.filter-group { margin-bottom: 20px; }
.filter-group h4 { font-size: 13px; font-weight: 600; color: var(--text-muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.5px; }
.filter-group label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; cursor: pointer; transition: color var(--transition-fast); }
.filter-group label:hover { color: var(--color-accent); }
.filter-group input { margin-right: 6px; }

@media (max-width: 991px) {
  .product-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
  }
  .search-section {
    grid-column: 1;
    grid-row: 1;
  }
  .search-section .search-box {
    margin: 0;
  }
  .filter-sidebar {
    grid-column: 1;
    grid-row: 2;
    width: 100%;
    position: static;
  }
  .product-main-content {
    grid-column: 1;
    grid-row: 3;
  }
}

/* ========= Hero Section ========= */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0a1628 0%, #0f2044 30%, #132244 60%, #0e1a30 100%);
  padding: 72px 24px 88px;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%; left: -30%;
  width: 160%; height: 200%;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(14,165,233,0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 60%, rgba(124,58,237,0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(56,189,248,0.08) 0%, transparent 50%);
  pointer-events: none;
}
.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.hero-particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(14,165,233,0.3);
  animation: floatUp 8s infinite ease-in-out;
}
@keyframes floatUp {
  0%,100% { transform: translateY(0) scale(1); opacity: 0.3; }
  50% { transform: translateY(-60px) scale(1.5); opacity: 0.15; }
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-width, 1320px);
  margin: 0 auto;
  text-align: center;
}
.hero-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}
.pill {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  background: rgba(14,165,233,0.15);
  color: #38bdf8;
  border: 1px solid rgba(14,165,233,0.25);
}
.hero h1 {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: 2px;
  line-height: 1.2;
  background: linear-gradient(135deg, #ffffff 0%, #a5d6f8 40%, #c4b5fd 70%, #ffffff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 14px;
}
.hero-subtitle {
  font-size: 17px;
  color: rgba(255,255,255,0.65);
  font-weight: 400;
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}
.hero-domain {
  font-size: 14px;
  color: rgba(56,189,248,0.8);
  font-weight: 500;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  letter-spacing: 1px;
}

/* ========= Search Section ========= */
.search-section {
  max-width: var(--max-width, 1320px);
  margin: -44px auto 0;
  padding: 0 24px;
  position: relative;
  z-index: 10;
}
.search-box {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 20px 24px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}
.search-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.search-icon {
  color: var(--text-muted);
  font-size: 18px;
  flex-shrink: 0;
}
.search-input-row input {
  flex: 1;
  height: 46px;
  font-size: 15px;
  color: var(--text-primary);
  border: 1.5px solid var(--border-color);
  border-radius: 10px;
  padding: 0 16px;
  background: var(--bg-secondary);
  transition: border-color var(--transition-fast);
}
.search-input-row input:focus {
  border-color: var(--color-accent);
}
.search-input-row input::placeholder {
  color: var(--text-muted);
}
.btn-search {
  height: 46px;
  padding: 0 24px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #0ea5e9, #7c3aed);
  transition: all var(--transition-fast);
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(14,165,233,0.2);
  border: none;
  cursor: pointer;
}
.btn-search:hover {
  box-shadow: 0 4px 16px rgba(14,165,233,0.3);
}

/* ========= Section Common ========= */
.section-block {
  max-width: var(--max-width, 1320px);
  margin: 52px auto 0;
  padding: 0 24px;
}
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.section-title {
  font-size: 22px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  margin: 0;
}
.section-title-icon {
  font-size: 22px;
}
.section-more {
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
}
.section-more:hover {
  color: var(--color-accent-deep, #0369a1);
}

/* ========= Quick Entry Grid (四大入口) ========= */
.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.quick-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all var(--transition-fast);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
}
.quick-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(14,165,233,0.2);
}
.quick-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #0ea5e9, #7c3aed);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.quick-card:hover::before {
  opacity: 1;
}
.quick-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  color: #fff;
}
.quick-card-icon.cyan { background: linear-gradient(135deg, #0ea5e9, #38bdf8); }
.quick-card-icon.purple { background: linear-gradient(135deg, #7c3aed, #a78bfa); }
.quick-card-icon.green { background: linear-gradient(135deg, #10b981, #34d399); }
.quick-card-icon.orange { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.quick-card-info h4 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
  margin: 0 0 2px;
}
.quick-card-info p {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
}
@media (max-width: 991px) {
  .quick-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .quick-grid { grid-template-columns: 1fr; }
}

/* ========= Hot Scroll (大热门横向滚动) ========= */
.hot-scroll {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.hot-scroll::-webkit-scrollbar { height: 4px; }
.hot-scroll::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}
.tool-card-h {
  flex-shrink: 0;
  width: 180px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-fast);
  scroll-snap-align: start;
  position: relative;
}
.tool-card-h:hover {
  transform: translateY(-3px);
  border-color: rgba(14,165,233,0.3);
  box-shadow: var(--shadow-hover);
}
.tool-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin: 0 auto 10px;
  flex-shrink: 0;
}
.tool-card-info {
  min-width: 0;
}
.tool-card-info h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tool-card-info p {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tool-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 6px;
  line-height: 1.4;
}
.tool-badge.hot {
  background: linear-gradient(135deg, #ef4444, #f97316);
  color: #fff;
}
.tool-badge.new {
  background: linear-gradient(135deg, #10b981, #34d399);
  color: #fff;
}

/* ========= Ranking Tabs (TOP10排行标签) ========= */
.ranking-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.rank-tab {
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.rank-tab:hover {
  color: var(--color-accent);
  border-color: rgba(14,165,233,0.2);
}
.rank-tab.active {
  background: linear-gradient(135deg, #0ea5e9, #7c3aed);
  color: #fff;
  border-color: transparent;
}

/* ========= Ranking List (TOP10排行列表) ========= */
.ranking-list {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.rank-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-color);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition-fast);
}
.rank-item:last-child { border-bottom: none; }
.rank-item:hover { background: var(--bg-secondary); }
.rank-num {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  background: var(--bg-secondary);
  color: var(--text-muted);
  flex-shrink: 0;
}
.rank-item.top1 .rank-num { background: linear-gradient(135deg,#ef4444,#f97316); color:#fff; }
.rank-item.top2 .rank-num { background: linear-gradient(135deg,#f59e0b,#fbbf24); color:#fff; }
.rank-item.top3 .rank-num { background: linear-gradient(135deg,#10b981,#34d399); color:#fff; }
.rank-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.rank-info {
  flex: 1;
  min-width: 0;
}
.rank-info h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}
.rank-info p {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rank-score {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* ========= Product Grid (最新工具网格) ========= */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
@media (max-width: 1200px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 767px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ========= Tool Card (统一工具卡片) ========= */
.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}
.tool-card:hover {
  transform: translateY(-3px);
  border-color: rgba(14,165,233,0.3);
  box-shadow: var(--shadow-hover);
}
.tool-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 12px;
}
.tool-card-head .tool-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  font-size: 16px;
  margin: 0;
}
.tool-card-head .tool-badge {
  position: static;
}
.tool-card-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.tool-card-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.tool-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
}
.tool-rating {
  font-weight: 600;
  color: var(--color-accent);
}
.tool-price { font-weight: 600; }
.tool-price.free { color: #10b981; }
.tool-price.paid { color: #f59e0b; }

/* ========= Toolchain Grid (热门工具链) ========= */
.toolchain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.toolchain-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  transition: all var(--transition-fast);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}
.toolchain-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #0ea5e9, #7c3aed);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.toolchain-card:hover::before { opacity: 1; }
.toolchain-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(14,165,233,0.15);
}
.toolchain-card h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.toolchain-flow {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.toolchain-flow .tool-tag {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 500;
  white-space: nowrap;
}
.toolchain-flow .tool-arrow {
  font-size: 10px;
  color: var(--text-muted);
}
.toolchain-card:hover .tool-tag {
  background: rgba(14,165,233,0.08);
  color: var(--color-accent);
}
.toolchain-meta {
  font-size: 11px;
  color: var(--text-muted);
}
@media (max-width: 1200px) {
  .toolchain-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .toolchain-grid { grid-template-columns: 1fr; }
}

/* ========= Money Grid (赚钱用钱) ========= */
.money-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.money-col h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.money-col h3 .icon {
  font-size: 20px;
}
.money-items {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.money-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px 14px;
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
}
.money-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(14,165,233,0.2);
}
.mi-icon {
  font-size: 24px;
  margin-bottom: 8px;
}
.money-item h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
}
.money-item p {
  font-size: 11px;
  color: var(--text-muted);
}
@media (max-width: 767px) {
  .money-grid { grid-template-columns: 1fr; }
  .money-items { grid-template-columns: repeat(2, 1fr); }
}

/* ========= Review Cards (最新评测 - 参考文件样式) ========= */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
}
.review-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.review-card-header {
  padding: 18px 18px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}
.review-avatar {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #fff;
  flex-shrink: 0;
}
.review-card-header .info h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}
.review-card-header .info span {
  font-size: 11px;
  color: var(--text-muted);
}
.review-card-body {
  padding: 12px 18px 16px;
}
.review-card-body h4 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 6px;
  color: var(--text-primary);
}
.review-card-body p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.review-card-footer {
  padding: 0 18px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.review-badge {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
}
.review-badge.deep { background: rgba(14,165,233,0.1); color: #0ea5e9; }
.review-badge.compare { background: rgba(124,58,237,0.1); color: #7c3aed; }
.review-badge.workflow { background: rgba(16,185,129,0.1); color: #10b981; }
.review-stars {
  font-size: 12px;
  color: #f59e0b;
  margin-left: auto;
}
@media (max-width: 991px) {
  .review-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .review-grid { grid-template-columns: 1fr; }
}

/* ========= Identity Grid (身份场景) ========= */
.identity-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
}
.identity-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 12px;
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
}
.identity-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(14,165,233,0.15);
}
.identity-card .ic-icon {
  font-size: 28px;
  margin-bottom: 8px;
}
.identity-card h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
}
.identity-card p {
  font-size: 11px;
  color: var(--text-muted);
}
@media (max-width: 1200px) {
  .identity-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 767px) {
  .identity-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 480px) {
  .identity-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ========= Capability Grid (能力做事) ========= */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}
.capability-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}
.capability-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.capability-card:hover::before { opacity: 1; }
.capability-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.capability-card .cc-icon {
  font-size: 30px;
  margin-bottom: 10px;
}
.capability-card h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}
.capability-card p {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}
@media (max-width: 1199px) {
  .capability-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 767px) {
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ========= Problem Grid (问题解决) ========= */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}
.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px 16px;
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
}
.problem-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(14,165,233,0.2);
}
.problem-card .pc-icon {
  font-size: 32px;
  margin-bottom: 8px;
}
.problem-card h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
}
.problem-card p {
  font-size: 11px;
  color: var(--text-muted);
}
@media (max-width: 1199px) {
  .problem-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 767px) {
  .problem-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ========= CTA Banner ========= */
.cta-section {
  max-width: var(--max-width, 1320px);
  margin: 52px auto 0;
  padding: 0 24px;
}
.cta-inner {
  background: linear-gradient(135deg, #0a1628, #132244);
  border-radius: var(--radius-xl, 20px);
  padding: 40px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: relative;
  overflow: hidden;
  flex-wrap: wrap;
}
.cta-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(14,165,233,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 50%, rgba(124,58,237,0.08) 0%, transparent 60%);
}
.cta-text {
  position: relative;
  z-index: 1;
}
.cta-text h3 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.cta-text p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}
.cta-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}
.btn-primary {
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  background: linear-gradient(135deg, #0ea5e9, #7c3aed);
  color: #fff;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 16px rgba(14,165,233,0.3);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(14,165,233,0.4);
}
.btn-outline-light {
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  border: 1.5px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.85);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  background: transparent;
  cursor: pointer;
}
.btn-outline-light:hover {
  border-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.06);
}
@media (max-width: 767px) {
  .cta-inner {
    padding: 28px 20px;
    flex-direction: column;
    text-align: center;
  }
}

/* ========= Entrance Grid (旧版四大入口，供entrance.html等使用) ========= */
.entrance-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}
.entrance-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
  display: block;
  color: inherit;
  text-decoration: none;
}
.entrance-card:hover {
  transform: translateY(-3px);
  border-color: rgba(14,165,233,0.3);
  box-shadow: var(--shadow-hover);
}
.entrance-icon { font-size: 36px; margin-bottom: 16px; }
.entrance-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.entrance-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.5;
}
.entrance-meta {
  display: flex;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}
.entrance-card.money { border-top: 4px solid #f59e0b; }
.entrance-card.identity { border-top: 4px solid #10b981; }
.entrance-card.capability { border-top: 4px solid #0ea5e9; }
.entrance-card.problem { border-top: 4px solid #7c3aed; }
@media (max-width: 991px) {
  .entrance-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .entrance-grid { grid-template-columns: 1fr; }
}

/* ========= Scenario Section (垂直场景分类板块) ========= */
.scenario-section { margin-bottom: 36px; }
.scenario-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.scenario-header h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
}
.scenario-more {
  font-size: 13px;
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
}
.scenario-more:hover { opacity: 0.8; }
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 1200px) {
  .scenario-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 767px) {
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ========= Old Review Card (评测卡片，供reviews.html使用) ========= */
.review-grid-old {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}
.review-card-old {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all var(--transition-fast);
  display: block;
  color: inherit;
  text-decoration: none;
}
.review-card-old:hover {
  border-color: rgba(14,165,233,0.25);
  box-shadow: var(--shadow-hover);
}
@media (max-width: 991px) {
  .review-grid-old { grid-template-columns: 1fr; }
}

/* ========= Filter Bar (筛选器) ========= */
.filter-bar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 24px;
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}
.filter-group {
  display: flex;
  align-items: center;
  gap: 8px;
}
.filter-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}
.filter-options {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.filter-option {
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
}
.filter-option:hover {
  color: var(--color-accent);
  border-color: rgba(14,165,233,0.2);
}
.filter-option.active {
  background: linear-gradient(135deg, #0ea5e9, #7c3aed);
  color: #fff;
  font-weight: 600;
}

/* ========= Pagination (分页) ========= */
.pagination {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 32px;
}
.page-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.page-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.page-btn.active {
  background: linear-gradient(135deg, #0ea5e9, #7c3aed);
  color: #fff;
  border-color: transparent;
}
.page-btn.arrow { font-size: 16px; }

/* ========= 产品速览（小型点缀） ========= */
.spot-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}
.spot-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 14px;
  text-align: center;
  transition: all var(--transition-fast);
  position: relative;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.spot-card:hover {
  border-color: rgba(14,165,233,0.25);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.spot-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700; color: #fff;
  flex-shrink: 0;
}
.spot-info h4 {
  font-size: 13px; font-weight: 600; margin: 0;
  color: var(--text-primary);
}
.spot-info p {
  font-size: 11px; color: var(--text-tertiary); margin: 2px 0 0;
}
.spot-card .tool-badge {
  position: absolute; top: 8px; right: 8px;
}
.tool-badge.sm {
  font-size: 9px; padding: 1px 5px; border-radius: 4px;
}

/* ========= 迷你评测（小型点缀） ========= */
.review-mini-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.review-mini-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: all var(--transition-fast);
  text-decoration: none;
  color: inherit;
}
.review-mini-card:hover {
  border-color: rgba(14,165,233,0.25);
  box-shadow: var(--shadow-hover);
}
.rm-header {
  display: flex; align-items: center; gap: 10px; flex: 1;
}
.rm-header .review-avatar {
  width: 36px; height: 36px; border-radius: 10px;
  flex-shrink: 0;
}
.rm-header div { flex: 1; min-width: 0; }
.rm-header h4 {
  font-size: 13px; font-weight: 600; margin: 0 0 2px;
  color: var(--text-primary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.rm-header span {
  font-size: 11px; color: var(--text-tertiary);
}
.review-mini-card .review-badge {
  flex-shrink: 0; align-self: flex-start;
  font-size: 11px; padding: 3px 10px;
}

@media (max-width: 767px) {
  .spot-grid { grid-template-columns: repeat(3, 1fr); }
  .review-mini-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .spot-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ========= Page Layout (Sidebar + Content) ========= */
.page-layout {
  display: flex;
  gap: 24px;
  max-width: var(--max-width, 1320px);
  margin: 0 auto;
  padding: 0 24px;
  align-items: flex-start;
}

.main-content {
  flex: 1;
  min-width: 0;
}

/* ========= Left Sidebar ========= */
.left-sidebar {
  position: sticky;
  top: 80px;
  width: 220px;
  flex-shrink: 0;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  padding: 12px 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  scrollbar-width: none;
}
.left-sidebar::-webkit-scrollbar { display: none; }

.sidebar-group { margin-bottom: 4px; }

.sidebar-group-title {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  padding: 7px 14px;
  border: none;
  border-radius: 8px;
  background: transparent;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  transition: background var(--transition-fast);
  text-align: left;
}
.sidebar-group-title:hover {
  background: var(--bg-secondary);
}
.sb-arrow {
  display: inline-block;
  font-size: 10px;
  transition: transform 0.2s;
  color: var(--text-tertiary);
}
.sidebar-group.collapsed .sb-arrow {
  transform: rotate(-90deg);
}
.sidebar-group.collapsed .sidebar-group-items {
  display: none;
}

.sidebar-group-items {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 2px 0 4px 14px;
}

.sidebar-link {
  display: block;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar-link:hover {
  background: var(--bg-secondary);
  color: var(--color-accent);
}
.sidebar-link.active {
  background: rgba(14,165,233,0.1);
  color: var(--color-accent);
  font-weight: 600;
}

/* ========= Responsive: hide sidebar on small screens ========= */
@media (max-width: 1200px) {
  .left-sidebar { display: none; }
  .page-layout { padding: 0 16px; }
}
@media (max-width: 991px) {
  .page-layout { flex-direction: column; padding: 0 12px; }
}

/* ========== Qoder Banner 广告样式 ========== */
.qoder-banner-section {
  padding: 0 24px;
  margin: 52px auto;
  max-width: 1320px;
}
.qoder-banner-new {
  display: block;
  text-decoration: none;
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 24px rgba(14, 165, 233, 0.25);
}
.qoder-banner-new:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 16px 48px rgba(14, 165, 233, 0.4);
}
.qoder-banner-visual {
  position: relative;
  background: linear-gradient(135deg, #0c4a6e 0%, #1e3a8a 30%, #5b21b6 70%, #7c3aed 100%);
  padding: 48px 56px;
  min-height: 200px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
/* 背景装饰 */
.qoder-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.4;
  animation: orbFloat 8s ease-in-out infinite;
}
.orb-1 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, #0ea5e9 0%, transparent 70%);
  top: -100px;
  right: 10%;
  animation-delay: 0s;
}
.orb-2 {
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, #ec4899 0%, transparent 70%);
  bottom: -80px;
  left: 20%;
  animation-delay: 4s;
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -20px) scale(1.1); }
}
.qoder-bg-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
/* 内容布局 */
.qoder-banner-left {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
  position: relative;
  z-index: 2;
}
.qoder-icon-box {
  width: 80px;
  height: 80px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
  transition: all 0.3s ease;
}
.qoder-banner-new:hover .qoder-icon-box {
  transform: rotate(-5deg) scale(1.05);
  background: rgba(255, 255, 255, 0.25);
}
.qoder-letter {
  font-size: 42px;
  font-weight: 900;
  color: #fff;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}
.qoder-info {
  flex: 1;
}
.qoder-info h3 {
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  margin: 0 0 10px 0;
  line-height: 1.3;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}
.qoder-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
  margin: 0 0 16px 0;
  line-height: 1.5;
}
.qoder-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.qoder-tag {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  padding: 8px 16px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 600;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  transition: all 0.3s ease;
}
.qoder-banner-new:hover .qoder-tag {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}
/* CTA按钮 */
.qoder-banner-right {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
}
.qoder-cta-btn {
  background: #fff;
  color: #5b21b6;
  padding: 18px 36px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.qoder-cta-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.3) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.qoder-banner-new:hover .qoder-cta-btn::before {
  opacity: 1;
}
.qoder-banner-new:hover .qoder-cta-btn {
  transform: scale(1.08);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}
.qoder-cta-arrow {
  font-size: 22px;
  transition: transform 0.3s ease;
}
.qoder-banner-new:hover .qoder-cta-arrow {
  transform: translateX(6px);
}

/* 响应式适配 */
@media (max-width: 768px) {
  .qoder-banner-section { margin: 40px auto; padding: 0 16px; }
  .qoder-banner-visual { 
    flex-direction: column; 
    padding: 36px 28px; 
    gap: 28px;
    text-align: center;
  }
  .qoder-banner-left { 
    flex-direction: column; 
    width: 100%;
  }
  .qoder-icon-box { width: 64px; height: 64px; }
  .qoder-letter { font-size: 32px; }
  .qoder-info h3 { font-size: 20px; }
  .qoder-desc { font-size: 14px; }
  .qoder-tags { justify-content: center; }
  .qoder-cta-btn { width: 100%; justify-content: center; }
}