.main-banner {
  width: 100%;
  height: 420px;
  background: url('../../img/company_banner.jpg') center center/cover no-repeat;
  margin-top: 0;
  position: relative;
  overflow: hidden;
}
.company-intro-section {
  background: #fff;
  max-width: 1100px;
  margin: 40px auto 0 auto;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  padding: 48px 32px 32px 32px;
  text-align: center;
}
.company-name {
  font-size: 2.8em;
  font-weight: bold;
  color: var(--primary);
  margin-bottom: 24px;
  letter-spacing: 2px;
}
.company-desc {
  font-size: 1.25em;
  color: #444;
  line-height: 2;
  margin-bottom: 0;
}
.history-section {
  max-width: 1100px;
  margin: 48px auto 0 auto;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  padding: 40px 32px 32px 32px;
}
.history-tabs {
  display: flex;
  gap: 24px;
  margin-bottom: 32px;
  border-bottom: 2px solid #eee;
}
.history-tab {
  padding: 14px 32px;
  font-size: 1.15em;
  color: #666;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  margin-bottom: -2px;
}
.history-tab.active {
  color: var(--primary);
  border-bottom: 3px solid var(--primary);
  font-weight: bold;
}
.history-content {
  margin-top: 12px;
  text-align: left;
}
.history-year-group {
  margin-bottom: 24px;
}
.history-year {
  font-size: 1.15em;
  color: #0070f3;
  font-weight: bold;
  margin-bottom: 6px;
}
.history-desc {
  color: #444;
  margin-left: 18px;
  margin-bottom: 10px;
  line-height: 1.8;
}
.industry-banner {
  width: 100%;
  height: 500px;
  background: url('../../img/industry_banner.jpg') center center/cover no-repeat;
  margin: 60px 0 0 0;
  position: relative;
}
.honor-section {
  max-width: 1100px;
  margin: 48px auto 60px auto;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  padding: 40px 32px 32px 32px;
}
.honor-title {
  font-size: 2em;
  color: var(--primary);
  font-weight: bold;
  margin-bottom: 32px;
  text-align: center;
}
.honor-list {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: flex-start;
}
.honor-item {
  flex: 1 1 calc(50% - 32px);
  min-width: 320px;
  background: #f7f8fa;
  border-radius: 10px;
  padding: 28px 24px;
  margin-bottom: 0;
  box-shadow: 0 1px 4px rgba(0,0,0,0.03);
  display: flex;
  flex-direction: column;
  margin-right: 0;
}

.honor-item-title {
  font-size: 1.18em;
  color: #0070f3;
  font-weight: bold;
  margin-bottom: 10px;
}
.honor-item-desc {
  color: #444;
  font-size: 1em;
  line-height: 1.7;
}

/* ══════════════════════════════════════
   腾伟了解我们：关于腾伟 + 发展历程时间轴
   ══════════════════════════════════════ */

.introduce-tw .tw-about-section,
.introduce-tw .tw-history-section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 48px 24px 0;
}

.introduce-tw .tw-history-section {
  padding-bottom: 72px;
}

.introduce-tw .tw-panel {
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  padding: 36px 40px 40px;
}

.introduce-tw .tw-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.introduce-tw .tw-section-label {
  margin: 0;
  padding: 10px 28px;
  font-size: 1.35em;
  font-weight: 700;
  color: #111;
  letter-spacing: 0.04em;
  background: linear-gradient(90deg, rgba(var(--primary-rgb), 0.22), rgba(var(--primary-rgb), 0.05));
  border-radius: 4px;
  display: inline-block;
}

.introduce-tw .tw-brand-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.introduce-tw .tw-brand-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.35), transparent 45%),
    conic-gradient(from 210deg, var(--primary), var(--accent), var(--primary));
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.15);
  position: relative;
}

.introduce-tw .tw-brand-icon::after {
  content: '';
  position: absolute;
  inset: 10px;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  border-radius: 50%;
  border-top-color: transparent;
  border-left-color: transparent;
  transform: rotate(-20deg);
}

.introduce-tw .tw-brand-text {
  font-size: 1.55em;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--primary);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.introduce-tw .tw-about-visual {
  width: 100%;
  overflow: hidden;
  margin-bottom: 28px;
  background: #0d1a2a;
}

.introduce-tw .tw-about-visual img {
  display: block;
  width: 100%;
  height: 320px;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.introduce-tw .tw-about-text {
  margin: 0 auto 36px;
  max-width: 980px;
  text-align: center;
  font-size: 1.05em;
  line-height: 2;
  color: #333;
  text-align: justify;
  text-justify: inter-ideograph;
}

.introduce-tw .tw-values {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 48px 72px;
  padding-top: 8px;
}

.introduce-tw .tw-value {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #222;
  font-size: 1.08em;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.introduce-tw .tw-value-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  color: var(--primary);
}

.introduce-tw .tw-value-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* 横向时间轴 */
.introduce-tw .tw-timeline-wrap {
  overflow-x: auto;
  padding: 8px 4px 12px;
  -webkit-overflow-scrolling: touch;
}

.introduce-tw .tw-timeline {
  position: relative;
}

.introduce-tw .tw-timeline-desktop {
  min-width: 1040px;
  display: flex;
  flex-direction: column;
}

.introduce-tw .tw-timeline-mobile {
  display: none;
}

.introduce-tw .tw-tl-row {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(96px, 1fr);
  align-items: stretch;
}

.introduce-tw .tw-tl-row-top {
  min-height: 140px;
  align-items: end;
  padding-bottom: 18px;
}

.introduce-tw .tw-tl-row-bottom {
  min-height: 140px;
  align-items: start;
  padding-top: 18px;
}

.introduce-tw .tw-tl-cell {
  padding: 0 6px;
  text-align: center;
}

.introduce-tw .tw-tl-cell-empty {
  visibility: hidden;
}

.introduce-tw .tw-tl-year {
  font-size: 1.05em;
  font-weight: 800;
  color: #111;
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.introduce-tw .tw-tl-text {
  font-size: 0.82em;
  line-height: 1.55;
  color: #333;
  word-break: break-word;
}

.introduce-tw .tw-tl-axis {
  position: relative;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(96px, 1fr);
  height: 28px;
  align-items: center;
}

.introduce-tw .tw-tl-axis::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 3px;
  background: #1a1a1a;
  transform: translateY(-50%);
  z-index: 1;
}

.introduce-tw .tw-tl-axis-cell {
  position: relative;
  height: 28px;
  z-index: 2;
}

.introduce-tw .tw-tl-node {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 14px;
  height: 14px;
  margin: -7px 0 0 -7px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 6px rgba(var(--primary-rgb), 0.18);
}

.introduce-tw .tw-tl-stem {
  position: absolute;
  left: 50%;
  width: 2px;
  height: 18px;
  background: rgba(var(--primary-rgb), 0.45);
  transform: translateX(-50%);
}

.introduce-tw .tw-tl-stem-top {
  bottom: 50%;
  margin-bottom: 7px;
}

.introduce-tw .tw-tl-stem-bottom {
  top: 50%;
  margin-top: 7px;
}

.introduce-tw .tw-values-footer {
  margin-top: 28px;
  padding-top: 8px;
}

@media (max-width: 900px) {
  .main-banner, .industry-banner { height: 220px; }
  .company-intro-section, .history-section, .honor-section { padding: 18px 8px; }
  .honor-item { min-width: 90%; flex: 1 1 100%; }
  .honor-list { gap: 16px; }
  .history-tabs { flex-direction: column; gap: 8px; }

  .introduce-tw .tw-about-section,
  .introduce-tw .tw-history-section {
    padding: 28px 14px 0;
  }

  .introduce-tw .tw-history-section {
    padding-bottom: 48px;
  }

  .introduce-tw .tw-panel {
    padding: 24px 16px 28px;
  }

  .introduce-tw .tw-section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .introduce-tw .tw-section-label {
    font-size: 1.15em;
    padding: 8px 18px;
  }

  .introduce-tw .tw-brand-text {
    font-size: 1.25em;
  }

  .introduce-tw .tw-about-visual img {
    height: 200px;
  }

  .introduce-tw .tw-about-text {
    font-size: 0.98em;
    line-height: 1.85;
    text-align: left;
  }

  .introduce-tw .tw-values {
    gap: 20px 28px;
  }

  /* 移动端改为纵向时间轴 */
  .introduce-tw .tw-timeline-wrap {
    overflow: visible;
    padding: 0;
  }

  .introduce-tw .tw-timeline-desktop {
    display: none;
  }

  .introduce-tw .tw-timeline-mobile {
    display: block;
    position: relative;
    padding-left: 22px;
  }

  .introduce-tw .tw-timeline-mobile::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 4px;
    bottom: 4px;
    width: 3px;
    background: #1a1a1a;
  }

  .introduce-tw .tw-tl-mobile-item {
    position: relative;
    padding: 0 0 24px 18px;
  }

  .introduce-tw .tw-tl-mobile-item::before {
    content: '';
    position: absolute;
    left: -23px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 5px rgba(var(--primary-rgb), 0.18);
  }

  .introduce-tw .tw-tl-year {
    margin-bottom: 4px;
  }

  .introduce-tw .tw-tl-text {
    font-size: 0.92em;
  }
}