/* ============================================================
   关于我们页面
   ============================================================ */

/* ---------- 2. 公司简介 ---------- */
.about-intro { padding: 80px 0; background: #ffffff; }
.about-intro-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 60px;
  align-items: start;
}
.about-intro-text .hsb-title { margin-bottom: 24px; }
.about-intro-text p {
  font-size: 1.02rem;
  line-height: 1.9;
  color: #475569;
  margin: 0 0 16px 0;
}
.about-intro-text strong { color: #0f2b5c; font-weight: 600; }
.about-intro-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.stat-item {
  background: linear-gradient(135deg, #f8fafc, #eef2f7);
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 28px 20px;
  text-align: center;
}
.stat-item strong {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-item span { font-size: 0.92rem; color: #64748b; }

/* ---------- 3. 发展历程 ---------- */
.about-history { padding: 80px 0; background: #f8fafc; }
.timeline {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  padding-left: 40px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, #3b82f6, #d200ff);
  border-radius: 2px;
}
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -35px;
  top: 8px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #ffffff;
  border: 4px solid #3b82f6;
  box-shadow: 0 0 0 4px rgba(59,130,246,.15);
}
.timeline-content {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 28px 32px;
  transition: all .3s ease;
}
.timeline-content:hover {
  transform: translateX(4px);
  border-color: transparent;
  box-shadow: 0 12px 32px rgba(15,23,42,.08);
}
.timeline-content h3 {
  font-size: 1.2rem;
  color: #1e293b;
  font-weight: 700;
  margin: 0 0 10px 0;
}
.timeline-content p {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.8;
  color: #475569;
}

/* ---------- 4. 我们的能力 ---------- */
.about-skills { padding: 80px 0; background: #ffffff; }
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 20px;
}
.skill-card {
  padding: 32px 26px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.skill-card:hover {
  transform: translateY(-6px);
  background: #ffffff;
  border-color: transparent;
  box-shadow: 0 16px 40px rgba(15,23,42,.1);
}
.skill-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}
.skill-card h3 {
  font-size: 1.15rem;
  color: #1e293b;
  margin: 0 0 12px 0;
  font-weight: 700;
}
.skill-card p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: #475569;
  margin: 0 0 18px 0;
  flex: 1;
}
.skill-card a {
  font-size: 0.92rem;
  color: #3b82f6;
  font-weight: 600;
  text-decoration: none;
}
.skill-card a:hover { color: #1d4ed8; }

/* ---------- 5. 服务承诺 ---------- */
.about-promise { padding: 80px 0; background: #f8fafc; }
.promise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.promise-item {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 32px 28px;
  transition: all .3s ease;
}
.promise-item:hover {
  transform: translateY(-4px);
  border-color: transparent;
  box-shadow: 0 12px 32px rgba(15,23,42,.08);
}
.promise-icon { font-size: 2rem; margin-bottom: 14px; }
.promise-item h4 {
  font-size: 1.1rem;
  color: #1e293b;
  margin: 0 0 10px 0;
  font-weight: 700;
}
.promise-item p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: #475569;
}

/* ---------- 6. 联系我们 ---------- */
.about-contact {
  padding: 80px 0;
  background: linear-gradient(135deg, #0f2b5c 0%, #1a2a6c 100%);
}
.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 60px;
  align-items: center;
  padding: 60px 60px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 24px;
}
.contact-left h2 {
  font-size: 1.9rem;
  color: #ffffff;
  margin: 0 0 18px 0;
  font-weight: 700;
}
.contact-left > p {
  font-size: 1rem;
  color: rgba(255,255,255,.85);
  line-height: 1.85;
  margin: 0 0 28px 0;
}
.contact-items { display: grid; gap: 14px; margin-bottom: 32px; }
.contact-line {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,.9);
  font-size: 1rem;
}
.contact-line i {
  width: 22px;
  text-align: center;
  color: #4facfe;
  font-size: 1.05rem;
}
.contact-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.contact-right { text-align: center; }
.qr-placeholder-lg {
  width: 180px;
  height: 180px;
  margin: 0 auto 14px;
  background: #ffffff;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #64748b;
}
.qr-placeholder-lg span { font-size: 13px; color: #64748b; }
.qr-placeholder-lg svg { color: #3b82f6; opacity: .8; }
.contact-right p {
  color: rgba(255,255,255,.75);
  font-size: 0.95rem;
  margin: 0;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1200px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .promise-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 992px) {
  .about-intro-wrap { grid-template-columns: 1fr; gap: 40px; }
  .contact-card { grid-template-columns: 1fr; gap: 40px; padding: 40px 28px; text-align: center; }
  .contact-actions { justify-content: center; }
  .contact-line { justify-content: center; }
}
@media (max-width: 768px) {
  .about-intro, .about-history, .about-skills, .about-promise, .about-contact { padding: 50px 0; }
  .skills-grid, .promise-grid { grid-template-columns: 1fr; gap: 16px; }
  .timeline { padding-left: 32px; }
  .timeline-content { padding: 22px 22px; }
  .timeline-content h3 { font-size: 1.05rem; }
  .timeline-content p { font-size: 0.92rem; }
  .stat-item strong { font-size: 1.8rem; }
  .contact-left h2 { font-size: 1.5rem; }
  .qr-placeholder-lg { width: 150px; height: 150px; }
}