/* ===== COMMON PAGE STYLES ===== */
.page-header {
  text-align: center;
  margin-bottom: 60px;
}

.page-title {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--accent-red), var(--accent-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  padding: 120px 0 60px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(234,67,53,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(251,188,4,0.05) 0%, transparent 40%);
}

.hero-bg::after {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(234,67,53,0.06) 0%, transparent 70%);
  filter: blur(60px);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.hero-title .gradient {
  background: linear-gradient(135deg, var(--accent-red), var(--accent-orange), var(--accent-yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 64px;
  flex-wrap: wrap;
  margin-top: 56px;
  padding: 24px;
  background: rgba(0, 0, 0, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
}

.hero-stat {
  text-align: center;
  position: relative;
}

.hero-stat:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -32px;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 40px;
  background: var(--border-color);
}

@media (max-width: 640px) {
  .hero-stats {
    gap: 24px;
    padding: 20px;
  }
  .hero-stat:not(:last-child)::after {
    display: none;
  }
  .hero-stat-value {
    font-size: 32px;
  }
}

.hero-stat-value {
  font-size: 40px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.hero-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== SEARCH SECTION ===== */
.search-section {
  padding: 0 0 60px;
  position: relative;
  z-index: 10;
}

.search-container {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
}

.search-box {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 6px;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
}

.search-box:focus-within {
  border-color: var(--accent-red);
  box-shadow: var(--shadow-glow);
}

.search-input {
  width: 100%;
  padding: 16px 20px 16px 52px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 16px;
  outline: none;
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-icon {
  position: absolute;
  left: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-btn {
  position: absolute;
  right: 6px;
  top: 6px;
  bottom: 6px;
  padding: 0 24px;
  background: linear-gradient(135deg, var(--accent-red), var(--accent-orange));
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.search-btn:hover {
  opacity: 0.9;
}

/* ===== FEATURES SECTION ===== */
.features-section {
  padding: 60px 0;
  position: relative;
}

.features-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-red), var(--accent-orange));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(255,71,87,0.15), rgba(255,99,72,0.15));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
  border: 1px solid rgba(255,71,87,0.2);
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== FILTER SECTION ===== */
.filter-section {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 64px;
  background: var(--bg-primary);
  z-index: 100;
}

.filter-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: 4px;
}

.filter-bar::-webkit-scrollbar {
  display: none;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.filter-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
}

.filter-pills {
  display: flex;
  gap: 8px;
}

.filter-pill {
  padding: 8px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
  font-weight: 500;
}

.filter-pill:hover {
  background: var(--bg-hover);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.filter-pill.active {
  background: linear-gradient(135deg, var(--accent-red), var(--accent-orange));
  border-color: transparent;
  color: white;
}

.filter-divider {
  width: 1px;
  height: 24px;
  background: var(--border-color);
  flex-shrink: 0;
}

/* ===== SECTION HEADER ===== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-title .icon {
  font-size: 28px;
}

.section-count {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}

.btn-view-all-inline {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  text-decoration: none;
  margin-left: 12px;
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.btn-view-all-inline:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}

.view-toggle {
  display: flex;
  gap: 4px;
  background: var(--bg-tertiary);
  padding: 4px;
  border-radius: var(--radius-md);
}

.view-btn {
  padding: 8px 12px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-fast);
  font-size: 14px;
}

.view-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* ===== PRODUCTS GRID ===== */
.products-section {
  padding: 40px 0 80px;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.products-grid.list-view {
  grid-template-columns: 1fr;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-red), var(--accent-orange));
  opacity: 0;
  transition: opacity 0.3s ease;
}



.product-card:hover::before {
  opacity: 1;
}

.product-header {
  display: flex;
  gap: 14px;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.product-logo {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.product-info {
  flex: 1;
  min-width: 0;
}

.product-name {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.product-maker {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.product-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.badge {
  padding: 2px 8px;
  background: rgba(255, 71, 87, 0.15);
  border: 1px solid rgba(255, 71, 87, 0.3);
  border-radius: 100px;
  font-size: 11px;
  color: var(--accent-red);
  font-weight: 500;
}

.badge-hot {
  background: rgba(255, 71, 87, 0.2);
  border-color: var(--accent-red);
  color: var(--accent-red);
}

.badge-new {
  background: rgba(46, 213, 115, 0.2);
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.badge-free {
  background: rgba(0, 210, 211, 0.2);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.badge-featured {
  background: rgba(255, 165, 2, 0.2);
  border-color: var(--accent-yellow);
  color: var(--accent-yellow);
}

.product-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.product-price {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-orange);
}

.product-price.free {
  color: var(--accent-green);
}

.product-rating {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--text-secondary);
}

.rating-score {
  font-weight: 600;
  color: var(--accent-yellow);
}

.product-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  padding: 4px 10px;
  background: var(--bg-tertiary);
  border-radius: 100px;
  font-size: 12px;
  color: var(--text-secondary);
}

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  grid-column: 1 / -1;
}

.empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.empty-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.empty-desc {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ===== FEATURED SECTION ===== */
.featured-section {
  padding: 80px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.featured-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  transition: all 0.3s ease;
}

.featured-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.featured-icon {
  font-size: 48px;
  margin-bottom: 20px;
}

.featured-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.featured-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.featured-count {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

/* ===== PRODUCT DETAIL PAGE ===== */
.product-detail {
  padding: 100px 0 60px;
  min-height: calc(100vh - 300px);
}

.product-detail-header {
  display: flex;
  gap: 32px;
  margin-bottom: 48px;
  align-items: flex-start;
}

.product-detail-logo {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 60px;
  flex-shrink: 0;
  box-shadow: var(--shadow-lg);
}

.product-detail-info {
  flex: 1;
}

.product-detail-name {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 8px;
}

.product-detail-maker {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.product-detail-badges {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.product-detail-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 600px;
}

.product-detail-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.meta-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
}

.meta-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.meta-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.meta-value.price {
  color: var(--accent-orange);
}

.meta-value.rating {
  color: var(--accent-yellow);
}

.product-detail-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 24px;
}

.product-detail-section .section-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
}

.feature-item .feature-icon {
  font-size: 24px;
  width: auto;
  height: auto;
  background: transparent;
  border: none;
  margin: 0;
}

.feature-text {
  font-size: 14px;
  color: var(--text-secondary);
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
}

.pricing-table th,
.pricing-table td {
  padding: 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.pricing-table th {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.pricing-table td {
  font-size: 14px;
  color: var(--text-secondary);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: linear-gradient(135deg, var(--accent-red), var(--accent-orange));
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 24px;
  transition: color 0.2s;
}

.back-link:hover {
  color: var(--text-primary);
}

/* ===== ARTICLES PAGE ===== */
.articles-page {
  padding: 120px 0 80px;
  min-height: calc(100vh - 300px);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.3s ease;
  text-decoration: none;
  color: inherit;
  display: block;
}

.article-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.article-number {
  font-size: 48px;
  font-weight: 800;
  color: var(--accent-red);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}

.article-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.article-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== PRICING PAGE ===== */
.pricing-page {
  padding: 120px 0 80px;
  min-height: calc(100vh - 300px);
}

.pricing-table-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  overflow-x: auto;
}

.pricing-table-container .pricing-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 800px;
}

.pricing-table-container .pricing-table th,
.pricing-table-container .pricing-table td {
  padding: 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.pricing-table-container .pricing-table th {
  background: var(--bg-tertiary);
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.pricing-table-container .pricing-table tr:hover {
  background: var(--bg-hover);
}

.product-cell {
  display: flex;
  align-items: center;
  gap: 12px;
}

.product-logo-small {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.product-name-cell {
  font-weight: 600;
  color: var(--text-primary);
}

.product-maker-cell {
  font-size: 12px;
  color: var(--text-muted);
}

.price-cell {
  font-weight: 700;
  color: var(--accent-orange);
}

.price-cell.free {
  color: var(--accent-green);
}

.rating-cell {
  color: var(--accent-yellow);
  font-weight: 600;
}

.tag-cell {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tag-small {
  padding: 4px 10px;
  background: var(--bg-tertiary);
  border-radius: 100px;
  font-size: 11px;
  color: var(--text-secondary);
}

.action-cell a {
  color: var(--accent-red);
  text-decoration: none;
  font-weight: 500;
}

.action-cell a:hover {
  text-decoration: underline;
}

/* ===== RANKINGS PAGE ===== */
.rankings-page {
  padding: 120px 0 80px;
  min-height: calc(100vh - 300px);
}

.rankings-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ranking-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  transition: all 0.3s ease;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.ranking-item:hover {
  border-color: var(--border-hover);
  transform: translateX(8px);
}

.rank-number {
  font-size: 36px;
  font-weight: 800;
  width: 60px;
  text-align: center;
  color: var(--text-muted);
}

.rank-number.top3 {
  background: linear-gradient(135deg, var(--accent-red), var(--accent-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.rank-logo {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  flex-shrink: 0;
}

.rank-info {
  flex: 1;
  min-width: 0;
}

.rank-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.rank-maker {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.rank-desc {
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rank-score {
  text-align: center;
  padding: 0 24px;
}

.score-value {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent-yellow);
}

.score-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.rank-price {
  font-size: 16px;
  font-weight: 600;
  color: var(--accent-orange);
  min-width: 80px;
  text-align: right;
}

.rank-price.free {
  color: var(--accent-green);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .product-detail-meta {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 120px 0 60px;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat-value {
    font-size: 28px;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .featured-grid {
    grid-template-columns: 1fr;
  }

  .filter-section {
    top: 64px;
  }

  .filter-label {
    display: none;
  }
  
  .page-title {
    font-size: 32px;
  }
  
  .product-detail-header {
    flex-direction: column;
    text-align: center;
  }

  .product-detail-logo {
    margin: 0 auto;
  }

  .product-detail-meta {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-list {
    grid-template-columns: 1fr;
  }
  
  .articles-grid {
    grid-template-columns: 1fr;
  }
  
  .ranking-item {
    flex-wrap: wrap;
    gap: 16px;
  }

  .rank-number {
    font-size: 24px;
    width: 40px;
  }

  .rank-logo {
    width: 48px;
    height: 48px;
    font-size: 24px;
  }

  .rank-desc {
    display: none;
  }

  .rank-score {
    padding: 0 12px;
  }

  .score-value {
    font-size: 24px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 32px;
  }

  .search-btn {
    display: none;
  }

  .product-detail-meta {
    grid-template-columns: 1fr;
  }
}

/* ===== RESEARCH HOME PREVIEW ===== */
.research-home-section {
  padding: 0 0 80px;
}

.research-home-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

@media (max-width: 1024px) {
  .research-home-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .research-home-grid {
    grid-template-columns: 1fr;
  }
}

.research-home-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 24px;
  text-decoration: none;
  transition: var(--transition-normal);
  height: 100%;
}

.research-home-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.research-home-card[data-type="R-TECH"]:hover { border-color: var(--accent-purple); }
.research-home-card[data-type="R-BENCH"]:hover { border-color: var(--accent-blue); }
.research-home-card[data-type="R-INDUSTRY"]:hover { border-color: var(--accent-green); }
.research-home-card[data-type="R-CASE"]:hover { border-color: var(--accent-orange); }

.research-home-card-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.research-home-card-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.research-home-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}