/* ============================================
   About 页面 - 精简版
   ============================================ */

/* ---- 整体 ---- */
#about {
  background: linear-gradient(180deg, #020617 0%, #0F172A 50%, #020617 100%);
  min-height: 100vh;
}

#about .section {
  background: transparent;
}

/* ============================================
   1. Hero Banner
   ============================================ */
.about-hero {
  position: relative;
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.about-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 25% 40%, rgba(99, 102, 241, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse at 75% 60%, rgba(56, 189, 248, 0.14) 0%, transparent 55%),
    linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
}

.about-hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 20px;
}

.about-hero-badge {
  display: inline-block;
  padding: 4px 18px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2.5px;
  color: #38BDF8;
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 20px;
  margin-bottom: 20px;
}

.about-hero h1 {
  font-size: 52px;
  font-weight: 700;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #fff 30%, #38BDF8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-hero-desc {
  font-size: 16px;
  color: rgba(203, 213, 225, 0.75);
  margin-bottom: 40px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* 数据统计横排 */
.about-hero-stats {
  display: flex;
  justify-content: center;
  align-items: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 36px;
}

.stat-num {
  font-size: 30px;
  font-weight: 700;
  color: #38BDF8;
  line-height: 1.1;
}

.stat-unit {
  font-size: 16px;
  font-weight: 600;
  color: #38BDF8;
}

.stat-label {
  font-size: 12px;
  color: rgba(148, 163, 184, 0.6);
  margin-top: 4px;
  letter-spacing: 0.5px;
}

.stat-divider {
  width: 1px;
  height: 32px;
  background: rgba(148, 163, 184, 0.12);
}

/* ============================================
   2. 核心优势 — 简洁 3 列
   ============================================ */
.about-advantages {
  padding: 80px 0 60px;
}

.advantages-grid.compact {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.advantage-item {
  text-align: center;
  padding: 40px 28px;
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid rgba(148, 163, 184, 0.06);
  border-radius: 16px;
  transition: all 0.35s ease;
}

.advantage-item:hover {
  border-color: rgba(56, 189, 248, 0.15);
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
}

.advantage-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 20px;
  color: #38BDF8;
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.advantage-item:hover .advantage-icon {
  opacity: 1;
}

.advantage-icon svg {
  width: 100%;
  height: 100%;
}

.advantage-item h4 {
  font-size: 18px;
  font-weight: 600;
  color: #E2E8F0;
  margin-bottom: 8px;
}

.advantage-item p {
  font-size: 13px;
  color: rgba(148, 163, 184, 0.7);
  line-height: 1.5;
}

/* ============================================
   3. 时间轴
   ============================================ */
.about-timeline {
  padding: 70px 0;
}

.about-timeline .section-title {
  text-align: center;
  margin-bottom: 48px;
}

.about-timeline .section-title h2 {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, #F1F5F9 30%, #38BDF8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.timeline {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, #38BDF8, rgba(99, 102, 241, 0.3), transparent);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
  padding-left: 28px;
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -40px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #0F172A;
  border: 2px solid #38BDF8;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.25);
  z-index: 1;
  transition: all 0.3s ease;
}

.timeline-item:hover .timeline-dot {
  background: #38BDF8;
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.5);
}

.timeline-date {
  font-size: 13px;
  font-weight: 600;
  color: #38BDF8;
  letter-spacing: 0.5px;
  flex-shrink: 0;
  width: 68px;
}

.timeline-content h4 {
  font-size: 15px;
  font-weight: 500;
  color: rgba(226, 232, 240, 0.85);
}

/* ============================================
   4. 荣誉资质
   ============================================ */
.about-honors {
  padding: 70px 0;
}

.about-honors .section-title {
  text-align: center;
  margin-bottom: 40px;
}

.about-honors .section-title h2 {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, #F1F5F9 30%, #38BDF8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.honors-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.honor-item {
  flex: 0 1 calc(25% - 12px);
  min-width: 160px;
  max-width: 240px;
  padding: 24px 16px;
  text-align: center;
  background: rgba(30, 41, 59, 0.35);
  border: 1px solid rgba(148, 163, 184, 0.06);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.honor-item:hover {
  border-color: rgba(56, 189, 248, 0.15);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.honor-item img {
  width: 100%;
  max-width: 160px;
  height: auto;
  border-radius: 6px;
  margin-bottom: 10px;
}

.honor-item p {
  font-size: 12px;
  color: rgba(203, 213, 225, 0.7);
}

/* ============================================
   5. CTA
   ============================================ */
.about-cta {
  padding: 60px 0 90px;
}

.cta-inner {
  text-align: center;
  padding: 56px 40px;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(56, 189, 248, 0.07) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 50%, rgba(99, 102, 241, 0.05) 0%, transparent 60%),
    rgba(30, 41, 59, 0.3);
  border: 1px solid rgba(148, 163, 184, 0.06);
  border-radius: 20px;
}

.cta-inner h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #F1F5F9 30%, #38BDF8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cta-inner > p {
  font-size: 15px;
  color: rgba(148, 163, 184, 0.6);
  margin-bottom: 28px;
}

.cta-btn {
  display: inline-block;
  padding: 12px 40px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, #38BDF8 0%, #6366F1 100%);
  border-radius: 10px;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.2);
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(56, 189, 248, 0.35);
}

/* ============================================
   移动端
   ============================================ */
@media (max-width: 768px) {
  .about-hero {
    height: 300px;
  }

  .about-hero h1 {
    font-size: 32px;
  }

  .about-hero-desc {
    font-size: 14px;
  }

  .about-hero-stats {
    flex-wrap: wrap;
    gap: 8px;
  }

  .stat-item {
    padding: 0 16px;
  }

  .stat-num {
    font-size: 22px;
  }

  .stat-divider {
    display: none;
  }

  .advantages-grid.compact {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  .about-advantages {
    padding: 60px 0 40px;
  }

  .about-timeline,
  .about-honors {
    padding: 50px 0;
  }

  .about-timeline .section-title h2,
  .about-honors .section-title h2 {
    font-size: 22px;
  }

  .honor-item {
    flex: 0 1 calc(50% - 8px);
    min-width: 120px;
  }

  .about-cta {
    padding: 30px 0 60px;
  }

  .cta-inner {
    padding: 36px 20px;
  }

  .cta-inner h2 {
    font-size: 22px;
  }
}