/* 头部样式 */
.site-header {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  padding: 0 20px;
}

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

.logo img {
  height: 40px;
  width: auto;
}

.logo span {
  font-size: 0.95rem;
  color: var(--text-color);
  font-weight: 400;
}

.main-nav ul {
  display: flex;
  gap: 35px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--text-color);
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 500;
  padding: 8px 0;
  position: relative;
  transition: var(--transition);
}

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

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

.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary-color);
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.language-selector {
  position: relative;
  margin-left: 5px;
}

.current-lang {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  cursor: pointer;
  border-radius: 6px;
  transition: var(--transition);
}

.current-lang:hover {
  background: rgba(0, 0, 0, 0.05);
}

.current-lang i {
  font-size: 0.95rem;
  color: var(--text-color);
}

.current-lang span {
  font-size: 0.95rem;
  color: var(--text-color);
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--white);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  padding: 8px 0;
  margin-top: 5px;
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
}

.language-selector:hover .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-dropdown li {
  padding: 8px 16px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.lang-dropdown li:hover {
  background: rgba(0, 0, 0, 0.05);
}

.lang-dropdown li i {
  font-size: 0.9rem;
  color: var(--primary-color);
}

.mobile-menu-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .site-header .container {
    height: 60px;
    padding: 0 15px;
  }

  .logo img {
    height: 30px;
  }

  .logo span {
    display: none;
  }

  .main-nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: block;
  }
}

/* 常见问题页面样式 */

/* 页面头部 */
.page-header {
  background: var(--gradient-primary);
  color: var(--white);
  padding: 120px 0 60px;
  position: relative;
  overflow: hidden;
}

.page-header h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.page-header p {
  font-size: 1.2rem;
  max-width: 700px;
  opacity: 0.9;
}

.header-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100px;
  min-height: 100px;
  z-index: 5;
  overflow: hidden;
}

.header-wave svg {
  display: block;
  width: 100%;
  height: 100%;
}

/* FAQ布局 */
.faq-section {
  padding: 80px 0;
  background-color: var(--white);
}

.faq-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
}

/* 左侧边栏 */
.faq-sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
  background-color: var(--background-color);
  border-radius: 10px;
  padding: 25px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.search-box {
  display: flex;
  margin-bottom: 25px;
}

.search-box input {
  flex: 1;
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: 6px 0 0 6px;
  font-size: 0.95rem;
}

.search-box button {
  background-color: var(--primary-color);
  color: var(--white);
  border: none;
  padding: 0 15px;
  border-radius: 0 6px 6px 0;
  cursor: pointer;
  transition: var(--transition);
}

.search-box button:hover {
  background-color: var(--primary-dark);
}

.category-nav h3 {
  font-size: 1.1rem;
  margin-bottom: 15px;
  color: var(--text-color);
  font-weight: 600;
}

.category-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.category-nav li {
  padding: 12px 15px;
  margin-bottom: 5px;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-color);
}

.category-nav li i {
  width: 20px;
  text-align: center;
  color: var(--primary-color);
}

.category-nav li:hover {
  background-color: rgba(0, 0, 0, 0.03);
}

.category-nav li.active {
  background-color: var(--primary-color);
  color: var(--white);
}

.category-nav li.active i {
  color: var(--white);
}

.contact-support {
  margin-top: 30px;
  text-align: center;
}

.support-btn {
  background-color: var(--primary-color);
  color: var(--white);
  border: none;
  padding: 12px 20px;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-bottom: 10px;
}

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

.support-hours {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* 右侧FAQ内容 */
.faq-content {
  background-color: var(--white);
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  padding: 30px;
}

.faq-category {
  display: none;
}

.faq-category.active {
  display: block;
}

.faq-category h2 {
  font-size: 1.8rem;
  margin-bottom: 25px;
  color: var(--primary-color);
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border-color);
}

.faq-item {
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.faq-question {
  padding: 20px;
  background-color: var(--background-color);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover {
  background-color: rgba(0, 0, 0, 0.02);
}

.faq-question h3 {
  font-size: 1.1rem;
  margin: 0;
  color: var(--text-color);
  font-weight: 600;
}

.toggle-icon {
  color: var(--primary-color);
  transition: var(--transition);
}

.faq-item.active .toggle-icon i {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  padding: 20px;
  max-height: 1000px;
}

.faq-answer p {
  margin-bottom: 15px;
  line-height: 1.6;
  color: var(--text-color);
}

.faq-answer ul {
  margin-bottom: 15px;
  padding-left: 20px;
}

.faq-answer li {
  margin-bottom: 8px;
  line-height: 1.5;
  color: var(--text-color);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.faq-answer li i {
  margin-top: 5px;
  color: var(--primary-color);
}

.faq-answer li i.fa-times {
  color: var(--danger-color);
}

/* 计算器样式 */
.calculator {
  background-color: var(--background-color);
  border-radius: 8px;
  padding: 20px;
  margin: 20px 0;
}

.calculator h4 {
  font-size: 1.1rem;
  margin-bottom: 15px;
  color: var(--text-color);
}

.calc-input {
  margin-bottom: 15px;
}

.calc-input label {
  display: block;
  margin-bottom: 5px;
  font-size: 0.9rem;
  color: var(--text-light);
}

.calc-input input {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 1rem;
}

.calc-btn {
  background-color: var(--primary-color);
  color: var(--white);
  border: none;
  padding: 10px 15px;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.95rem;
}

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

.calc-result {
  margin-top: 15px;
  padding: 10px;
  background-color: var(--white);
  border-radius: 6px;
  text-align: center;
  font-weight: 600;
  color: var(--primary-color);
}

/* 图片样式 */
.process-image, .price-curve, .delivery-map {
  margin: 20px 0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.process-image img, .price-curve img, .delivery-map img {
  width: 100%;
  display: block;
}

/* 折扣滑块 */
.discount-slider {
  margin: 20px 0;
}

.discount-slider label {
  display: block;
  margin-bottom: 10px;
  font-size: 0.95rem;
  color: var(--text-color);
}

.discount-slider input[type="range"] {
  width: 100%;
  height: 8px;
  -webkit-appearance: none;
  background: var(--background-color);
  border-radius: 4px;
  outline: none;
}

.discount-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  background: var(--primary-color);
  border-radius: 50%;
  cursor: pointer;
}

/* NFT分红示例 */
.nft-dividend-example {
  background-color: var(--background-color);
  border-radius: 8px;
  padding: 20px;
  margin: 20px 0;
}

.nft-dividend-example h4 {
  font-size: 1.1rem;
  margin-bottom: 15px;
  color: var(--text-color);
}

.nft-dividend-example p {
  margin-bottom: 10px;
  line-height: 1.5;
}

.nft-dividend-example p:last-child {
  font-weight: 600;
  color: var(--primary-color);
  font-size: 1.1rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .faq-layout {
    grid-template-columns: 1fr;
  }
  
  .faq-sidebar {
    position: relative;
    top: 0;
    margin-bottom: 30px;
  }
  
  .category-nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }
  
  .category-nav li {
    flex: 1;
    min-width: 150px;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .page-header {
    padding: 80px 0 40px;
  }
  
  .page-header h1 {
    font-size: 2.2rem;
  }
  
  .page-header p {
    font-size: 1rem;
  }
  
  .header-wave {
    height: 50px;
    min-height: 50px;
  }
  
  .faq-section {
    padding: 50px 0;
  }
  
  .faq-content {
    padding: 20px;
  }
  
  .faq-category h2 {
    font-size: 1.5rem;
  }
  
  .category-nav li {
    min-width: 120px;
    padding: 10px;
    font-size: 0.9rem;
  }
}

@media (max-width: 576px) {
  .page-header h1 {
    font-size: 1.8rem;
  }
  
  .page-header {
    padding: 80px 0 30px;
  }
  
  .header-wave {
    height: 30px;
    min-height: 30px;
  }
  
  .faq-question h3 {
    font-size: 1rem;
  }
  
  .faq-answer {
    padding: 0 15px;
  }
  
  .faq-item.active .faq-answer {
    padding: 15px;
  }
  
  .calculator, .nft-dividend-example {
    padding: 15px;
  }
}