:root {
  --color-bg: #FFF8F0;
  --color-bg-light: #FFF5EB;
  --color-card: #FFFFFF;
  --color-text: #4A4A4A;
  --color-text-light: #7A7A7A;
  --color-text-muted: #9A9A9A;
  --color-border: #E8E4E0;
  --color-primary: #8BA88E;
  --color-primary-light: #A7C4BC;
  --color-accent: #E8B4B8;
  --color-accent-light: #F0D0D4;
  
  --color-emotion: #E8B4B8;
  --color-career: #E8D4B8;
  --color-psychology: #C4B8D4;
  --color-cognitive: #A7C4BC;
  --color-academic: #8BA88E;
  --color-tools: #D4C4B0;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --transition: all 0.3s ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1a1a2e;
    --color-bg-light: #16213e;
    --color-card: #0f0f23;
    --color-text: #e8e8e8;
    --color-text-light: #b8b8b8;
    --color-text-muted: #888888;
    --color-border: #2a2a4a;
    --color-primary: #8BA88E;
    --color-primary-light: #6a886e;
    --color-accent: #E8B4B8;
    --color-accent-light: #c49498;
    
    --color-emotion: #8B5A5A;
    --color-career: #8B7A5A;
    --color-psychology: #7A5A8B;
    --color-cognitive: #5A8B7A;
    --color-academic: #5A6B5A;
    --color-tools: #7A6A5A;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  }
}

[data-theme="dark"] {
  --color-bg: #1a1a2e;
  --color-bg-light: #16213e;
  --color-card: #0f0f23;
  --color-text: #e8e8e8;
  --color-text-light: #b8b8b8;
  --color-text-muted: #888888;
  --color-border: #2a2a4a;
  --color-primary: #8BA88E;
  --color-primary-light: #6a886e;
  --color-accent: #E8B4B8;
  --color-accent-light: #c49498;
  
  --color-emotion: #8B5A5A;
  --color-career: #8B7A5A;
  --color-psychology: #7A5A8B;
  --color-cognitive: #5A8B7A;
  --color-academic: #5A6B5A;
  --color-tools: #7A6A5A;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
}

[data-theme="light"] {
  --color-bg: #FFF8F0;
  --color-bg-light: #FFF5EB;
  --color-card: #FFFFFF;
  --color-text: #4A4A4A;
  --color-text-light: #7A7A7A;
  --color-text-muted: #9A9A9A;
  --color-border: #E8E4E0;
  --color-primary: #8BA88E;
  --color-primary-light: #A7C4BC;
  --color-accent: #E8B4B8;
  --color-accent-light: #F0D0D4;
  
  --color-emotion: #E8B4B8;
  --color-career: #E8D4B8;
  --color-psychology: #C4B8D4;
  --color-cognitive: #A7C4BC;
  --color-academic: #8BA88E;
  --color-tools: #D4C4B0;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 248, 240, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 18px;
  color: var(--color-text);
}

.logo-icon {
  font-size: 24px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 15px;
  color: var(--color-text-light);
  transition: var(--transition);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
  border-radius: 1px;
}

.nav-link:hover::after {
  width: 100%;
}

.search-box {
  position: relative;
  width: 200px;
}

.search-input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-card);
  font-size: 14px;
  color: var(--color-text);
  transition: var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(139, 168, 142, 0.1);
}

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

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--color-text-muted);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: var(--transition);
}

.auth-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 8px 12px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 16px;
}

.theme-toggle:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

.theme-icon-dark {
  display: none;
}

[data-theme="dark"] .theme-icon-light {
  display: none;
}

[data-theme="dark"] .theme-icon-dark {
  display: inline;
}

.logout-btn {
  padding: 6px 12px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  font-size: 13px;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition);
  margin-left: 8px;
}

.logout-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: #EF4444;
  color: #EF4444;
}

.auth-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.vip-badge {
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 12px;
  background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
  color: #333;
}

.vip-badge .vip-active {
  color: #333;
  font-weight: 500;
}

.vip-badge .vip-link {
  color: #667eea;
  text-decoration: none;
}

.user-link {
  font-size: 14px;
  color: var(--color-text);
  padding: 6px 12px;
  border-radius: 16px;
  background: var(--color-bg-light);
  transition: var(--transition);
}

.user-link:hover {
  background: var(--color-primary-light);
}

.btn-login {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  font-size: 14px;
  font-weight: 500;
  border-radius: 20px;
  transition: var(--transition);
}

.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.vip-link {
  background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-light) 100%);
  overflow: hidden;
}

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

.floating-leaves {
  position: absolute;
  inset: 0;
}

.leaf {
  position: absolute;
  font-size: 24px;
  opacity: 0.3;
  animation: float 6s ease-in-out infinite;
}

.leaf-1 { top: 20%; left: 10%; animation-delay: 0s; }
.leaf-2 { top: 40%; right: 15%; animation-delay: 1.5s; }
.leaf-3 { bottom: 30%; left: 20%; animation-delay: 3s; }
.leaf-4 { top: 60%; right: 25%; animation-delay: 4.5s; }

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(10deg); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 640px;
}

.hero-title {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--color-primary);
  margin-bottom: 24px;
  font-weight: 500;
}

.hero-desc {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 40px;
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

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

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-lg);
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: #7A9A7E;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--color-card);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.hot-rankings {
  padding: 80px 0;
  background: var(--color-card);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.section-title {
  font-size: 28px;
  font-weight: 600;
  color: var(--color-text);
}

.section-title.center {
  text-align: center;
  width: 100%;
}

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

.rank-tab {
  padding: 8px 16px;
  font-size: 14px;
  color: var(--color-text-light);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

.rank-tab.active,
.rank-tab:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

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

.rank-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.rank-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.rank-badge {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.rank-info {
  flex: 1;
}

.rank-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

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

.rank-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

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

.rank-users {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.rank-btn {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
}

.rank-btn:hover {
  background: #7A9A7E;
}

.categories {
  padding: 60px 0;
  background: var(--color-bg);
}

.category-nav {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.category-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px;
  background: var(--color-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  text-align: center;
}

.category-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.category-item[data-category="emotion"]:hover { background: var(--color-emotion); }
.category-item[data-category="career"]:hover { background: var(--color-career); }
.category-item[data-category="psychology"]:hover { background: var(--color-psychology); }
.category-item[data-category="cognitive"]:hover { background: var(--color-cognitive); }
.category-item[data-category="academic"]:hover { background: var(--color-academic); }
.category-item[data-category="tools"]:hover { background: var(--color-tools); }

.category-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.category-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

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

.products {
  padding: 40px 0 80px;
}

.product-section {
  margin-bottom: 60px;
}

.product-section:last-child {
  margin-bottom: 0;
}

.product-section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

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

.section-desc {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-muted);
  margin-left: auto;
}

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

.product-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.product-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

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

.product-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.product-tag {
  padding: 4px 10px;
  font-size: 12px;
  color: var(--color-text-light);
  background: var(--color-bg);
  border-radius: var(--radius-sm);
}

.product-duration {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  margin-top: auto;
}

.product-btn {
  width: 100%;
  padding: 12px;
  font-size: 14px;
  font-weight: 500;
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

.product-btn:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.features {
  padding: 80px 0;
  background: var(--color-card);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.feature-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

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

.feature-icon {
  font-size: 40px;
  margin-bottom: 16px;
  display: block;
}

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

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

.footer {
  background: var(--color-bg);
  padding: 60px 0 24px;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 280px;
}

.footer-brand .logo-icon {
  font-size: 28px;
}

.footer-brand .logo-text {
  font-size: 20px;
  font-weight: 600;
}

.footer-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 12px;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 64px;
}

.footer-column h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
}

.footer-column a {
  display: block;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 10px;
  transition: var(--transition);
}

.footer-column a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

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

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-content {
  position: absolute;
  top: 70px;
  left: 16px;
  right: 16px;
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  transform: translateY(-20px);
  transition: var(--transition);
}

.mobile-menu.active .mobile-menu-content {
  transform: translateY(0);
}

.mobile-menu-link {
  display: block;
  padding: 12px 0;
  font-size: 16px;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu-link:last-of-type {
  border-bottom: none;
}

.mobile-search {
  margin-top: 16px;
}

.mobile-search .search-input {
  width: 100%;
}

@media (max-width: 1024px) {
  .category-nav {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav, .search-box {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .mobile-menu {
    display: block;
  }
  
  .hero {
    padding: 100px 16px 60px;
    min-height: auto;
  }
  
  .hero-title {
    font-size: 32px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .hero-stats {
    gap: 24px;
  }
  
  .stat-number {
    font-size: 24px;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  
  .rank-item {
    flex-wrap: wrap;
    gap: 12px;
  }
  
  .rank-meta {
    width: 100%;
    justify-content: flex-start;
    order: 3;
  }
  
  .rank-btn {
    width: 100%;
    order: 4;
  }
  
  .category-nav {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .product-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 32px;
  }
  
  .footer-links {
    flex-wrap: wrap;
    gap: 32px;
  }
}