/* Base Styles */
:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  --light-color: #ecf0f1;
  --dark-color: #2c3e50;
  --text-color: #333;
  --text-light: #7f8c8d;
  --white: #fff;
  --gray: #95a5a6;
  --light-gray: #f5f5f5;
}

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

body {
  font-family: 'Roboto', sans-serif;
  color: var(--text-color);
  line-height: 1.6;
  background-color: var(--white);
}

a {
  text-decoration: none;
  color: var(--secondary-color);
  transition: all 0.3s ease;
}

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

img {
  max-width: 100%;
  height: auto;
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--secondary-color);
  color: var(--white);
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

/* Header Styles */
.header {
  background-color: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
}

.logo a {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-color);
}

.main-nav ul {
  display: flex;
}

.main-nav ul li {
  margin-left: 30px;
}

.main-nav ul li a {
  color: var(--dark-color);
  font-weight: 500;
}

.main-nav ul li a:hover {
  color: var(--secondary-color);
}

/* Hero Section */
.hero {
  background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), 
              url('https://images.unsplash.com/photo-1560518883-ce09059eeffa?ixlib=rb-4.0.3&auto=format&fit=crop&w=1000&q=80') no-repeat center center/cover;
  height: 100vh;
  color: var(--white);
  display: flex;
  align-items: center;
  text-align: center;
  padding-top: 80px;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
}

.hero p {
  font-size: 20px;
  margin-bottom: 30px;
}

.search-box {
  max-width: 600px;
  margin: 0 auto;
}

.search-box input {
  width: 100%;
  padding: 15px;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  margin-bottom: 15px;
}

.search-btn {
  background-color: var(--accent-color);
  color: var(--white);
  padding: 15px 30px;
  font-size: 18px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.search-btn:hover {
  background-color: #c0392b;
}

/* Features Section */
.features {
  padding: 80px 0;
  text-align: center;
}

.features h2 {
  font-size: 36px;
  margin-bottom: 50px;
  color: var(--primary-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.feature-item {
  background-color: var(--white);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.feature-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.feature-icon {
  font-size: 50px;
  margin-bottom: 20px;
}

.feature-item h3 {
  font-size: 22px;
  margin-bottom: 15px;
  color: var(--primary-color);
}

/* Size Guide Section */
.size-guide {
  padding: 80px 0;
  background-color: var(--light-gray);
  text-align: center;
}

.size-guide h2 {
  font-size: 36px;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.size-guide p {
  margin-bottom: 50px;
  font-size: 18px;
}

.size-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.size-item {
  background-color: var(--white);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.size-item h3 {
  font-size: 28px;
  color: var(--secondary-color);
  margin-bottom: 10px;
}

/* Testimonials Section */
.testimonials {
  padding: 80px 0;
  text-align: center;
}

.testimonials h2 {
  font-size: 36px;
  margin-bottom: 50px;
  color: var(--primary-color);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.testimonial-item {
  background-color: var(--white);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  text-align: left;
}

.testimonial-item p {
  font-style: italic;
  margin-bottom: 20px;
}

.author {
  font-weight: 700;
  color: var(--primary-color);
}

/* CTA Section */
.cta {
  padding: 80px 0;
  background-color: var(--secondary-color);
  color: var(--white);
  text-align: center;
}

.cta h2 {
  font-size: 36px;
  margin-bottom: 30px;
}

/* Footer Styles */
.footer {
  background-color: var(--dark-color);
  color: var(--white);
  padding: 60px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h3 {
  font-size: 20px;
  margin-bottom: 20px;
  color: var(--white);
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: var(--gray);
}

.footer-col ul li a:hover {
  color: var(--white);
}

.copyright {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--gray);
}

/* Page Header */
.page-header {
  padding: 120px 0 60px;
  background-color: var(--light-gray);
  text-align: center;
}

.page-header h1 {
  font-size: 42px;
  color: var(--primary-color);
  margin-bottom: 20px;
}

/* About Page */
.about-content {
  padding: 60px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-text h2 {
  font-size: 28px;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.about-text p {
  margin-bottom: 20px;
}

.about-image img {
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.team {
  padding: 60px 0;
  background-color: var(--light-gray);
  text-align: center;
}

.team h2 {
  font-size: 36px;
  margin-bottom: 50px;
  color: var(--primary-color);
}

.commitment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.commitment-item {
  background-color: var(--white);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.commitment-item h3 {
  font-size: 22px;
  margin-bottom: 15px;
  color: var(--primary-color);
}

/* Contact Page */
.contact-content {
  padding: 60px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-form h2 {
  font-size: 28px;
  color: var(--primary-color);
  margin-bottom: 30px;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 16px;
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.submit-btn {
  background-color: var(--secondary-color);
  color: var(--white);
  padding: 12px 30px;
  font-size: 16px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

.contact-info h2 {
  font-size: 28px;
  color: var(--primary-color);
  margin-bottom: 30px;
}

.info-item {
  margin-bottom: 30px;
}

.info-item h3 {
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.faq {
  padding: 60px 0;
  background-color: var(--light-gray);
}

.faq h2 {
  font-size: 36px;
  margin-bottom: 50px;
  color: var(--primary-color);
  text-align: center;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.faq-item {
  background-color: var(--white);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.faq-item h3 {
  font-size: 22px;
  margin-bottom: 15px;
  color: var(--primary-color);
}

/* Policy Pages */
.policy-content,
.terms-content {
  padding: 60px 0;
}

.policy-section,
.terms-section {
  margin-bottom: 40px;
}

.policy-section h2,
.terms-section h2 {
  font-size: 28px;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.policy-section p,
.terms-section p {
  margin-bottom: 15px;
}

.policy-section ul,
.terms-section ul {
  margin-left: 20px;
  margin-bottom: 15px;
}

.policy-section ul li,
.terms-section ul li {
  list-style-type: disc;
  margin-bottom: 8px;
}

/* Responsive Styles */
@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
    text-align: center;
  }

  .main-nav ul {
    margin-top: 20px;
  }

  .main-nav ul li {
    margin: 0 10px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero p {
    font-size: 18px;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about-image {
    order: -1;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 28px;
  }

  .hero p {
    font-size: 16px;
  }

  .search-btn {
    width: 100%;
  }
}
/* 促销文本样式 */
.search-promo {
  color: var(--white);
  font-size: 18px;
  font-weight: 700;
  margin-top: 15px;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
}
/* 移动端菜单按钮 */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--primary-color);
  font-size: 24px;
  cursor: pointer;
}

/* 移动端菜单关闭按钮 */
.mobile-menu-close {
  display: none;
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--white);
  font-size: 28px;
  cursor: pointer;
}

/* 移动端样式 */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  .main-nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: 80%;
    height: 100vh;
    background-color: var(--primary-color);
    padding: 60px 20px 20px;
    transition: all 0.3s ease;
    z-index: 1001;
  }
  
  .main-nav.active {
    left: 0;
  }
  
  .main-nav ul {
    flex-direction: column;
  }
  
  .main-nav ul li {
    margin: 15px 0;
  }
  
  .main-nav ul li a {
    color: var(--white);
    font-size: 18px;
  }
  
  .mobile-menu-close {
    display: block;
  }
}