/* ============================================================
   experts.css — 专家团队横向滑动区域
   水平滚动卡片、区域标签配色、滑块导航控件
   ============================================================ */

/* ----------------------------------------------------------
   Section 容器
   ---------------------------------------------------------- */
.experts {
  background: var(--color-pearl-white);
  padding: var(--space-24) var(--space-6);
  overflow: hidden;
}

/* ----------------------------------------------------------
   标题区域
   ---------------------------------------------------------- */
.experts-header {
  text-align: center;
  margin-bottom: var(--space-12);
  max-width: var(--content-width);
  margin-left: auto;
  margin-right: auto;
}

.experts-header .section-subtitle {
  font-size: var(--text-md);
  color: var(--color-champagne-gold);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.experts-header h2 {
  margin-bottom: var(--space-4);
}

.experts-header p {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

/* ----------------------------------------------------------
   横向滑动轨道
   ---------------------------------------------------------- */
.experts-slider {
  display: flex;
  gap: var(--space-6);
  overflow-x: auto;
  scroll-behavior: smooth;
  overscroll-behavior-inline: contain;
  -webkit-overflow-scrolling: touch;
  cursor: grab;
  scrollbar-width: none;             /* Firefox */
  -ms-overflow-style: none;          /* IE/Edge */
  padding: var(--space-4) 0;
  padding-left: calc((100% - 1200px) / 2);
  padding-right: var(--space-6);
}

.experts-slider:focus-visible {
  outline: 2px solid var(--color-champagne-gold);
  outline-offset: 4px;
}

.experts-slider.is-dragging {
  cursor: grabbing;
  scroll-behavior: auto;
  user-select: none;
}

.experts-slider.is-dragging .expert-card {
  pointer-events: none;
}

.experts-slider::-webkit-scrollbar {
  display: none;                     /* Chrome/Safari */
}

/* ----------------------------------------------------------
   专家卡片
   ---------------------------------------------------------- */
.expert-card {
  display: flex;
  flex-direction: column;
  height: 410px;
  min-width: 320px;
  max-width: 320px;
  background: var(--color-pure-white);
  border-radius: var(--radius-xl);
  padding: 36px;
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  transition: all var(--transition-base);
  flex-shrink: 0;
  position: relative;
  -webkit-user-drag: none;
}

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

/* ----------------------------------------------------------
   专家头像徽章
   ---------------------------------------------------------- */
.expert-badge {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0F172A, #1e293b);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  position: relative;
  overflow: hidden;
}

/* 徽章光环效果 */
.expert-badge::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-champagne-gold), transparent 60%);
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.expert-card:hover .expert-badge::after {
  opacity: 1;
}

.expert-badge img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.expert-badge .badge-initials {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: var(--weight-bold);
  color: var(--color-pure-white);
  letter-spacing: var(--tracking-tight);
}

/* ----------------------------------------------------------
   专家信息
   ---------------------------------------------------------- */
.expert-name {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-graphite-black);
  margin-bottom: var(--space-2);
  font-family: var(--font-cn);
}

.expert-title {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  line-height: var(--leading-normal);
}

.expert-credentials {
  display: -webkit-box;
  overflow: hidden;
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.expert-specialty {
  display: -webkit-box;
  max-height: 10.2em;
  margin-top: var(--space-4);
  overflow: hidden;
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 6;
}

/* ----------------------------------------------------------
   区域标签 — 不同颜色变体
   ---------------------------------------------------------- */
.expert-region {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-normal);
}

/* 大陆 — 金色 */
.expert-region.mainland {
  background: var(--color-gold-light);
  color: var(--color-champagne-gold);
}

/* 香港 — 深蓝 */
.expert-region.hk {
  background: rgba(15, 23, 42, 0.08);
  color: var(--color-deep-sea-blue);
}

/* 海外 — 灰色 */
.expert-region.overseas {
  background: rgba(148, 163, 184, 0.15);
  color: var(--color-platinum-gray);
}

/* 区域标签前的圆点指示器 */
.expert-region .region-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
}

.expert-region.mainland .region-dot {
  background: var(--color-champagne-gold);
}

.expert-region.hk .region-dot {
  background: var(--color-deep-sea-blue);
}

.expert-region.overseas .region-dot {
  background: var(--color-platinum-gray);
}

/* ----------------------------------------------------------
   专家专长标签
   ---------------------------------------------------------- */
.expert-specialties {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: var(--space-4);
}

.expert-specialty-tag {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--color-pearl-white);
  color: var(--color-text-secondary);
  font-size: 0.7rem;
  font-weight: var(--weight-medium);
  border: 1px solid var(--color-border-light);
}

/* ----------------------------------------------------------
   滑块导航控件
   ---------------------------------------------------------- */
.slider-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

/* 箭头按钮 */
.slider-arrow {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border-light);
  background: var(--color-pure-white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  color: var(--color-graphite-black);
  flex-shrink: 0;
}

.slider-arrow:hover {
  background: var(--color-champagne-gold);
  border-color: var(--color-champagne-gold);
  color: var(--color-pure-white);
  box-shadow: var(--shadow-gold);
}

.slider-arrow:active {
  transform: scale(0.95);
}

.slider-arrow:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.slider-arrow:disabled:hover {
  background: var(--color-pure-white);
  border-color: var(--color-border-light);
  color: var(--color-graphite-black);
  box-shadow: none;
}

.slider-arrow svg {
  width: 18px;
  height: 18px;
}

/* 指示圆点 */
.slider-dots {
  display: flex;
  align-items: center;
  gap: 8px;
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: rgba(0, 0, 0, 0.15);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  padding: 0;
}

.slider-dot:hover {
  background: rgba(0, 0, 0, 0.3);
}

.slider-dot.active {
  width: 24px;
  background: var(--color-champagne-gold);
}

/* ----------------------------------------------------------
   响应式
   ---------------------------------------------------------- */
@media (max-width: 1024px) {
  .experts-slider {
    padding-left: var(--space-6);
  }
}

@media (max-width: 768px) {
  .experts {
    padding: var(--space-16) 0;
  }

  .experts-header {
    padding: 0 var(--space-5);
    margin-bottom: var(--space-8);
  }

  .experts-slider {
    padding-left: var(--space-5);
    gap: var(--space-4);
  }

  .expert-card {
    min-width: 280px;
    max-width: 280px;
    padding: var(--space-6);
  }

  .expert-badge {
    width: 60px;
    height: 60px;
  }

  .slider-nav {
    margin-top: var(--space-6);
  }
}

@media (max-width: 480px) {
  .expert-card {
    min-width: 260px;
    max-width: 260px;
    padding: var(--space-5);
  }
}