/* 创弘童趣优选官网 - 共享样式 */
:root {
  --primary: #FF6B6B;
  --primary-dark: #EE5253;
  --secondary: #4ECDC4;
  --accent: #FFE66D;
  --dark: #2D3436;
  --light: #F7F9FC;
  --text: #5A5A5A;
  --radius: 16px;
  --shadow: 0 10px 40px rgba(0,0,0,0.08);
  --shadow-hover: 0 20px 60px rgba(0,0,0,0.12);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: var(--dark);
  background: var(--light);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.05);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.3rem;
}

.nav {
  display: flex;
  gap: 35px;
}

.nav a {
  font-weight: 500;
  color: var(--dark);
  position: relative;
  transition: var(--transition);
}

.nav a:hover,
.nav a.active {
  color: var(--primary);
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}

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

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 6px 20px rgba(255,107,107,0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(255,107,107,0.45);
}

.btn-secondary {
  background: white;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

.btn-sm {
  padding: 10px 20px;
  font-size: 0.9rem;
}

/* Section styles */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2.2rem;
  margin-bottom: 12px;
  color: var(--dark);
}

.section-title p {
  color: var(--text);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255,107,107,0.1);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 15px;
}

/* Cards */
.card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.card-body {
  padding: 24px;
}

.card-title {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--dark);
}

.card-text {
  color: var(--text);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

/* Grid */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

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

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 70px;
  overflow: hidden;
  background: linear-gradient(135deg, #FFF5F5 0%, #F0FFFE 100%);
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  background: linear-gradient(90deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.7) 45%, rgba(255,255,255,0.2) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.2;
  margin-bottom: 24px;
  color: var(--dark);
}

.hero h1 span {
  color: var(--primary);
}

.hero p {
  font-size: 1.2rem;
  color: var(--text);
  margin-bottom: 32px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-note {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.hero-note span {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--text);
}

.company-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  background: linear-gradient(135deg, #FF6B6B, #FF9F43);
  border-radius: 50px;
  color: white;
  font-size: 1.1rem;
  font-weight: 600;
  margin: 20px 0;
  box-shadow: 0 8px 24px rgba(255, 107, 107, 0.3);
  animation: pulse-badge 2s ease-in-out infinite;
}

.company-badge i {
  font-size: 1.3rem;
}

@keyframes pulse-badge {
  0%, 100% { transform: scale(1); box-shadow: 0 8px 24px rgba(255, 107, 107, 0.3); }
  50% { transform: scale(1.05); box-shadow: 0 12px 32px rgba(255, 107, 107, 0.4); }
}

@media (max-width: 768px) {
  .company-badge {
    font-size: 0.95rem;
    padding: 10px 20px;
  }
}

/* Categories */
.category-card {
  text-align: center;
  padding: 35px 25px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.category-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 2rem;
  background: linear-gradient(135deg, var(--secondary), #45B7AA);
  color: white;
}

.category-card:nth-child(2) .category-icon {
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.category-card:nth-child(3) .category-icon {
  background: linear-gradient(135deg, #A29BFE, #6C5CE7);
}

.category-card h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.category-card p {
  color: var(--text);
  font-size: 0.95rem;
}

/* Features */
.features {
  background: white;
}

.feature-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  border-radius: var(--radius);
  background: var(--light);
  transition: var(--transition);
}

.feature-item:hover {
  background: #FFE5E5;
}

.feature-icon {
  width: 50px;
  height: 50px;
  min-width: 50px;
  border-radius: 12px;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.feature-item h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.feature-item p {
  color: var(--text);
  font-size: 0.9rem;
}

/* About */
.about-img {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.about-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-content h2 {
  font-size: 2rem;
  margin-bottom: 20px;
}

.about-content p {
  color: var(--text);
  margin-bottom: 16px;
}

.stats {
  display: flex;
  gap: 30px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.stat-item h3 {
  font-size: 2rem;
  color: var(--primary);
}

.stat-item p {
  color: var(--text);
  font-size: 0.9rem;
}

/* Testimonials */
.testimonials {
  background: linear-gradient(135deg, #FFF5F5 0%, #F0FFFE 100%);
}

/* Contact */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-item i {
  width: 50px;
  height: 50px;
  min-width: 50px;
  background: var(--primary);
  color: white;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.contact-item h4 {
  margin-bottom: 6px;
}

.contact-item p {
  color: var(--text);
  font-size: 0.95rem;
}

.contact-form {
  background: white;
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid #E8E8E8;
  border-radius: 12px;
  font-size: 1rem;
  transition: var(--transition);
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
}

/* Footer */
.footer {
  background: var(--dark);
  color: white;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: var(--accent);
}

.footer-brand p {
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.footer h4 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: white;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 30px;
  text-align: center;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
}

.footer-bottom a {
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

.footer-bottom a:hover {
  color: var(--accent);
}

/* Product page */
.product-filter {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 10px 22px;
  border-radius: 50px;
  border: 2px solid #E8E8E8;
  background: white;
  color: var(--text);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

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

.product-card .badge {
  position: absolute;
  top: 15px;
  left: 15px;
  padding: 6px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--accent);
  color: var(--dark);
}

.product-card {
  position: relative;
}

/* Responsive */
@media (max-width: 992px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero h1 {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    gap: 0;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transform: translateY(-150%);
    opacity: 0;
    transition: var(--transition);
  }
  .nav.open {
    transform: translateY(0);
    opacity: 1;
  }
  .nav a {
    padding: 15px 0;
    border-bottom: 1px solid #F0F0F0;
  }
  .nav a::after {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .mobile-menu-btn.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
  }
  .mobile-menu-btn.open span:nth-child(2) {
    opacity: 0;
  }
  .mobile-menu-btn.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
  }
  .hero {
    min-height: auto;
    padding: 120px 0 80px;
  }
  .hero h1 {
    font-size: 2rem;
  }
  .hero p {
    font-size: 1rem;
  }
  .section {
    padding: 60px 0;
  }
  .section-title h2 {
    font-size: 1.7rem;
  }
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .contact-form {
    padding: 25px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.7rem;
  }
  .btn {
    padding: 12px 22px;
    font-size: 0.95rem;
  }
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Animation utilities */
.fade-in {
  animation: fadeIn 0.8s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.float {
  animation: float 3s ease-in-out infinite;
}

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

/* 3D canvas hint */
#physics-canvas {
  width: 100%;
  height: 100%;
}

.scene-hint {
  position: absolute;
  bottom: 30px;
  right: 30px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--text);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  border: 1px solid rgba(255,255,255,0.5);
  transition: opacity 0.6s ease;
}

.scene-hint.hidden {
  opacity: 0;
  pointer-events: none;
}

.scene-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #4ECDC4;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}

@media (max-width: 768px) {
  .scene-hint {
    bottom: 20px;
    right: 20px;
    left: 20px;
    justify-content: center;
    font-size: 0.8rem;
  }
}

/* Product detail */
.product-gallery img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.product-detail-info h1 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.product-detail-info .desc {
  color: var(--text);
  margin-bottom: 24px;
}

.detail-list {
  list-style: none;
  margin: 20px 0;
}

.detail-list li {
  padding: 10px 0;
  border-bottom: 1px solid #F0F0F0;
  display: flex;
  justify-content: space-between;
}

.detail-list li span:first-child {
  color: var(--text);
}

.detail-list li span:last-child {
  font-weight: 600;
}