:root {
  --color-bg: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;
  --color-bg-card: #ffffff;
  --color-bg-hover: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-tertiary: #64748b;
  --color-text-muted: #94a3b8;
  --color-primary: #6366f1;
  --color-primary-hover: #4f46e5;
  --color-primary-light: #eef2ff;
  --color-primary-dark: #4338ca;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;
  --color-difficulty-easy: #10b981;
  --color-difficulty-medium: #f59e0b;
  --color-difficulty-advanced: #ef4444;
  --color-size-small: #06b6d4;
  --color-size-medium: #8b5cf6;
  --color-size-large: #f97316;
  --color-size-giant: #dc2626;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-modal: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --container-max: 1200px;
  --header-height: 72px;
}

[data-theme='dark'] {
  --color-bg: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-bg-card: #1e293b;
  --color-bg-hover: #334155;
  --color-border: #334155;
  --color-border-hover: #475569;
  --color-text: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-text-tertiary: #94a3b8;
  --color-text-muted: #64748b;
  --color-primary: #818cf8;
  --color-primary-hover: #a5b4fc;
  --color-primary-light: #312e81;
  --color-primary-dark: #6366f1;
  --color-difficulty-easy: #34d399;
  --color-difficulty-medium: #fbbf24;
  --color-difficulty-advanced: #f87171;
  --color-size-small: #22d3ee;
  --color-size-medium: #a78bfa;
  --color-size-large: #fb923c;
  --color-size-giant: #f87171;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  --shadow-modal: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--transition-normal), color var(--transition-normal);
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input {
  font-family: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.header-inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  cursor: pointer;
  flex-shrink: 0;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-primary), #ec4899);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: var(--shadow-md);
}

.logo-text {
  background: linear-gradient(135deg, var(--color-primary), #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  font-size: 18px;
  position: relative;
}

.icon-btn:hover {
  background: var(--color-bg-hover);
  color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.icon-btn:active {
  transform: translateY(0);
}

.fav-count {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  background: var(--color-danger);
  color: white;
  font-size: 11px;
  font-weight: 700;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.hero {
  padding: 48px 0 32px;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, transparent 60%);
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

.search-box {
  max-width: 560px;
  margin: 0 auto;
  position: relative;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  color: var(--color-text-muted);
  z-index: 1;
}

.search-input {
  width: 100%;
  height: 54px;
  padding: 0 18px 0 52px;
  font-size: 15px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg-card);
  color: var(--color-text);
  outline: none;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1), var(--shadow-md);
}

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

.search-clear {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  font-size: 14px;
  transition: all var(--transition-fast);
}

.search-clear.visible {
  display: flex;
}

.search-clear:hover {
  background: var(--color-border-hover);
  color: var(--color-danger);
}

.filters-section {
  padding: 28px 0 8px;
}

.filter-group {
  margin-bottom: 20px;
}

.filter-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
}

.filter-label-icon {
  font-size: 16px;
}

.tabs-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tab-btn {
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.tab-btn:hover {
  background: var(--color-bg-hover);
  color: var(--color-text);
  border-color: var(--color-border-hover);
}

.tab-btn.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.35);
}

.tab-btn .tab-emoji {
  font-size: 15px;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0 16px;
  flex-wrap: wrap;
}

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

.results-count strong {
  color: var(--color-primary);
  font-weight: 700;
}

.sort-select-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.sort-select {
  height: 38px;
  padding: 0 14px;
  font-size: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  color: var(--color-text);
  outline: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sort-select:focus {
  border-color: var(--color-primary);
}

.content-section {
  padding: 8px 0 80px;
}

.status-container {
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.loading-state,
.error-state,
.empty-state {
  text-align: center;
  padding: 60px 20px;
}

.loading-spinner {
  width: 56px;
  height: 56px;
  border: 4px solid var(--color-bg-tertiary);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 20px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.status-icon {
  font-size: 72px;
  margin-bottom: 16px;
  opacity: 0.7;
}

.status-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.status-desc {
  font-size: 15px;
  color: var(--color-text-tertiary);
  line-height: 1.7;
}

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

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  position: relative;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

.card-cover {
  position: relative;
  width: 100%;
  padding-top: 70%;
  overflow: hidden;
  background: var(--color-bg-tertiary);
}

.card-cover img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card-cover img {
  transform: scale(1.08);
}

.card-fav-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  z-index: 2;
}

[data-theme='dark'] .card-fav-btn {
  background: rgba(30, 41, 59, 0.9);
}

.card-fav-btn:hover {
  transform: scale(1.15);
  box-shadow: var(--shadow-md);
}

.card-fav-btn.active {
  color: var(--color-danger);
}

.card-size-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-full);
  color: white;
  backdrop-filter: blur(8px);
  z-index: 2;
}

.card-size-tag.size-small { background: var(--color-size-small); }
.card-size-tag.size-medium { background: var(--color-size-medium); }
.card-size-tag.size-large { background: var(--color-size-large); }
.card-size-tag.size-giant { background: var(--color-size-giant); }

.card-body {
  padding: 16px 18px 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.card-names {
  flex: 1;
  min-width: 0;
}

.card-cn-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.card-en-name {
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-top: 3px;
  font-style: italic;
}

.card-origin {
  font-size: 20px;
  flex-shrink: 0;
}

.card-meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.card-meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.card-difficulty {
  display: flex;
  align-items: center;
  gap: 5px;
  font-weight: 600;
  font-size: 13px;
}

.card-difficulty.easy { color: var(--color-difficulty-easy); }
.card-difficulty.medium { color: var(--color-difficulty-medium); }
.card-difficulty.advanced { color: var(--color-difficulty-advanced); }

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-chip {
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  transition: all var(--transition-fast);
}

[data-theme='dark'] .tag-chip {
  background: rgba(129, 140, 248, 0.15);
  color: var(--color-primary);
}

.tag-chip:hover {
  transform: translateY(-1px);
}

.card-scores {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 4px;
  border-top: 1px solid var(--color-border);
}

.score-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.score-icon {
  font-size: 16px;
  opacity: 0.8;
}

.score-label {
  font-size: 10px;
  color: var(--color-text-tertiary);
}

.score-stars {
  display: flex;
  gap: 1px;
}

.star {
  font-size: 11px;
  color: var(--color-bg-tertiary);
}

.star.filled {
  color: var(--color-warning);
}

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-lg);
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all var(--transition-normal);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.modal {
  position: relative;
  width: 100%;
  max-width: 960px;
  max-height: calc(100vh - 40px);
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-modal);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: scale(0.95) translateY(20px);
  opacity: 0;
  transition: all var(--transition-normal);
}

.modal-overlay.visible .modal {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  z-index: 10;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

[data-theme='dark'] .modal-close {
  background: rgba(30, 41, 59, 0.9);
}

.modal-close:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-danger);
  transform: rotate(90deg);
}

.modal-fav {
  position: absolute;
  top: 16px;
  right: 64px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  z-index: 10;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

[data-theme='dark'] .modal-fav {
  background: rgba(30, 41, 59, 0.9);
}

.modal-fav:hover {
  transform: scale(1.1);
}

.modal-fav.active {
  color: var(--color-danger);
}

.modal-hero {
  position: relative;
  width: 100%;
  padding-top: 38%;
  background: var(--color-bg-tertiary);
  flex-shrink: 0;
}

.modal-hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.2) 60%, transparent 100%);
}

.modal-hero-info {
  position: absolute;
  left: 28px;
  right: 120px;
  bottom: 24px;
  color: white;
  z-index: 5;
}

.modal-hero-names {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.modal-hero-cn {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.2;
}

.modal-hero-en {
  font-size: 15px;
  opacity: 0.85;
  font-style: italic;
}

.modal-hero-aliases {
  font-size: 13px;
  opacity: 0.8;
  margin-bottom: 14px;
}

.modal-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  font-size: 14px;
}

.modal-hero-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.modal-body {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.modal-tabs {
  display: flex;
  gap: 0;
  padding: 0 24px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-card);
  position: sticky;
  top: 0;
  z-index: 10;
  overflow-x: auto;
  flex-shrink: 0;
  scrollbar-width: none;
}

.modal-tabs::-webkit-scrollbar {
  display: none;
}

.modal-tab {
  padding: 16px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-tertiary);
  white-space: nowrap;
  position: relative;
  transition: all var(--transition-fast);
  border-bottom: 3px solid transparent;
}

.modal-tab:hover {
  color: var(--color-primary);
}

.modal-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.modal-content {
  padding: 28px;
  flex: 1;
}

.modal-tab-pane {
  display: none;
  animation: fadeIn 0.3s ease;
}

.modal-tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-title::before {
  content: '';
  display: block;
  width: 4px;
  height: 20px;
  background: linear-gradient(to bottom, var(--color-primary), #ec4899);
  border-radius: 2px;
}

.section-content {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.85;
}

.section-content p {
  margin-bottom: 14px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 22px;
}

.info-card {
  padding: 16px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.info-card-label {
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-bottom: 6px;
  font-weight: 500;
}

.info-card-value {
  font-size: 15px;
  color: var(--color-text);
  font-weight: 600;
}

.sub-section {
  margin-bottom: 22px;
}

.sub-section-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.list-items {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.list-item {
  display: flex;
  gap: 10px;
  padding: 12px 14px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.list-item-icon {
  color: var(--color-primary);
  font-size: 16px;
  flex-shrink: 0;
  margin-top: 1px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--color-primary);
}

.faq-question {
  padding: 16px 18px;
  background: var(--color-bg-secondary);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.faq-q {
  color: var(--color-primary);
  font-size: 16px;
  flex-shrink: 0;
}

.faq-answer {
  padding: 14px 18px 16px 44px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  border-top: 1px solid var(--color-border);
}

.related-section {
  padding: 0 28px 28px;
  flex-shrink: 0;
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
}

.related-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.related-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.related-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.related-cover {
  width: 100%;
  padding-top: 70%;
  background: var(--color-bg-tertiary);
  position: relative;
  overflow: hidden;
}

.related-cover img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.related-info {
  padding: 10px 12px;
}

.related-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 4px;
}

.related-en {
  font-size: 11px;
  color: var(--color-text-tertiary);
  margin-top: 2px;
  font-style: italic;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.footer {
  padding: 40px 0 32px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.footer-inner {
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  color: var(--color-text-tertiary);
  margin-bottom: 16px;
}

.footer-copy {
  font-size: 13px;
  color: var(--color-text-muted);
}

@media (max-width: 1200px) {
  .container {
    padding: 0 20px;
  }

  .hero-title {
    font-size: 38px;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
  }

  .modal {
    max-width: 920px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .container {
    padding: 0 16px;
  }

  .logo {
    font-size: 18px;
    gap: 8px;
  }

  .logo-icon {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  .icon-btn {
    width: 38px;
    height: 38px;
  }

  .hero {
    padding: 32px 0 20px;
  }

  .hero-title {
    font-size: 30px;
  }

  .hero-subtitle {
    font-size: 14px;
    margin-bottom: 24px;
  }

  .search-input {
    height: 50px;
    font-size: 14px;
  }

  .filters-section {
    padding: 20px 0 4px;
  }

  .tab-btn {
    padding: 7px 14px;
    font-size: 13px;
  }

  .toolbar {
    padding: 16px 0 12px;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .card-body {
    padding: 12px 14px 14px;
    gap: 10px;
  }

  .card-cn-name {
    font-size: 15px;
  }

  .card-en-name {
    font-size: 11px;
  }

  .card-meta-row {
    font-size: 12px;
    gap: 8px;
  }

  .card-tags {
    gap: 4px;
  }

  .tag-chip {
    padding: 3px 8px;
    font-size: 11px;
  }

  .card-scores {
    gap: 4px;
  }

  .score-label {
    display: none;
  }

  .modal-overlay {
    padding: 0;
    align-items: stretch;
  }

  .modal {
    max-width: 100%;
    max-height: 100vh;
    border-radius: 0;
  }

  .modal-hero {
    padding-top: 52%;
  }

  .modal-hero-info {
    left: 20px;
    right: 96px;
    bottom: 18px;
  }

  .modal-hero-cn {
    font-size: 24px;
  }

  .modal-hero-en {
    font-size: 13px;
  }

  .modal-hero-meta {
    font-size: 12px;
    gap: 8px 14px;
  }

  .modal-tabs {
    padding: 0 16px;
  }

  .modal-tab {
    padding: 14px 10px;
    font-size: 13px;
  }

  .modal-content {
    padding: 20px 18px;
  }

  .info-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .section-content {
    font-size: 14px;
  }

  .related-section {
    padding: 20px 18px;
  }

  .related-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 14px;
  }

  .header-inner {
    gap: 8px;
  }

  .logo-text {
    display: none;
  }

  .header-actions {
    gap: 8px;
  }

  .icon-btn {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .hero {
    padding: 24px 0 16px;
  }

  .hero-title {
    font-size: 24px;
    margin-bottom: 10px;
  }

  .hero-subtitle {
    font-size: 13px;
    margin-bottom: 20px;
  }

  .search-input {
    height: 46px;
    padding: 0 14px 0 44px;
    font-size: 13px;
  }

  .search-icon {
    left: 14px;
    font-size: 16px;
  }

  .filter-label {
    font-size: 13px;
  }

  .tab-btn {
    padding: 6px 12px;
    font-size: 12px;
    gap: 4px;
  }

  .tab-btn .tab-emoji {
    font-size: 13px;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .sort-select-wrapper {
    justify-content: space-between;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .card-cover {
    padding-top: 60%;
  }

  .card-body {
    padding: 14px 16px 16px;
  }

  .score-label {
    display: block;
  }

  .modal-close,
  .modal-fav {
    width: 36px;
    height: 36px;
    top: 12px;
    font-size: 18px;
  }

  .modal-fav {
    right: 56px;
  }

  .modal-hero {
    padding-top: 60%;
  }

  .modal-hero-info {
    left: 16px;
    right: 88px;
    bottom: 14px;
  }

  .modal-hero-cn {
    font-size: 20px;
  }

  .modal-hero-names {
    gap: 8px;
  }

  .modal-hero-aliases {
    font-size: 12px;
    margin-bottom: 10px;
  }

  .modal-hero-meta {
    font-size: 11px;
    gap: 6px 10px;
  }

  .modal-tabs {
    padding: 0 12px;
  }

  .modal-tab {
    padding: 12px 8px;
    font-size: 12px;
  }

  .modal-content {
    padding: 16px 14px;
  }

  .section-title {
    font-size: 16px;
    margin-bottom: 12px;
  }

  .section-content {
    font-size: 13px;
    line-height: 1.75;
  }

  .info-card {
    padding: 12px;
  }

  .info-card-value {
    font-size: 14px;
  }

  .sub-section-title {
    font-size: 14px;
  }

  .list-item {
    padding: 10px 12px;
    font-size: 13px;
  }

  .faq-question {
    padding: 14px;
    font-size: 14px;
  }

  .faq-answer {
    padding: 12px 14px 14px 38px;
    font-size: 13px;
  }

  .related-section {
    padding: 18px 14px;
  }

  .related-title {
    font-size: 15px;
  }

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

  .back-to-top {
    right: 12px;
    bottom: 12px;
    width: 40px;
    height: 40px;
    font-size: 16px;
  }
}