/* ============================================
   关于我们 页面专属样式（参照 document/aboutus 版式）
   配色已适配全站青蓝商务科技风：#15B0ED → #0E8FC0
   全部类名 ab- 前缀，避免与 style.css 冲突
   ============================================ */

:root {
  --ab-primary: #15B0ED;
  --ab-primary-dark: #0E8FC0;
  --ab-primary-light: #E6F6FD;
  --ab-text: #0F2F3F;
  --ab-text-secondary: #5F5D5D;
  --ab-text-light: #9AA5AC;
  --ab-bg-secondary: #F5FAFC;
  --ab-border: #E2EAF0;
  --ab-border-light: #EFF4F8;
  --ab-grad: linear-gradient(120deg, #15B0ED, #0E8FC0);
  --ab-grad-90: linear-gradient(90deg, #15B0ED, #0E8FC0);
  --ab-radius-md: 8px;
  --ab-radius-lg: 12px;
  --ab-radius-xl: 16px;
  --ab-transition: all 0.3s ease;
}

/* ---------- 通用区块头 ---------- */
.ab-sec-header {
  text-align: center;
  margin-bottom: 56px;
}
.ab-sec-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 14px;
  background: linear-gradient(120deg, rgba(21,176,237,.1), rgba(14,143,192,.1));
  border: 1px solid rgba(21,176,237,.18);
  color: var(--ab-primary-dark);
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}
.ab-sec-label::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ab-grad);
  box-shadow: 0 0 0 4px rgba(21,176,237,.14);
  animation: abPulse 2s ease-in-out infinite;
}
@keyframes abPulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(21,176,237,.15); }
  50% { box-shadow: 0 0 0 9px rgba(21,176,237,.04); }
}
.ab-sec-title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--ab-text);
}
.ab-sec-desc {
  font-size: 17px;
  color: var(--ab-text-secondary);
  max-width: 760px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ---------- 入场动画 ---------- */
.ab-fade {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.ab-fade.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   1. 公司简介：左文 + 右企业核心信息
   ============================================ */
.ab-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: end;
}

/* 左侧：公司简介 */
.ab-intro {
  position: relative;
  overflow: hidden;
  background: linear-gradient(155deg, #ffffff 0%, #F0F9FE 55%, #F4FBFE 100%);
  border: 1px solid rgba(21,176,237,.16);
  border-radius: var(--ab-radius-xl);
  padding: 48px 44px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  box-shadow: 0 24px 60px -28px rgba(21,176,237,.4);
  transition: transform .4s ease, box-shadow .4s ease;
}
.ab-intro:hover {
  transform: translateY(-4px);
  box-shadow: 0 32px 70px -28px rgba(21,176,237,.5);
}
.ab-intro::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(14,143,192,.06) 50%, transparent 70%);
  background-size: 200% 100%;
  animation: abShine 6s linear infinite;
  pointer-events: none;
}
@keyframes abShine {
  0% { background-position: 120% 0; }
  100% { background-position: -20% 0; }
}
.ab-glow {
  position: absolute;
  top: -90px;
  right: -70px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle at center, rgba(21,176,237,.24), transparent 70%);
  filter: blur(6px);
  pointer-events: none;
}
.ab-label {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--ab-primary-dark);
  margin-bottom: 16px;
}
.ab-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ab-grad);
  box-shadow: 0 0 0 4px rgba(21,176,237,.15);
  animation: abPulse 2s ease-in-out infinite;
}
.ab-title {
  position: relative;
  z-index: 1;
  font-size: 31px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 22px;
  color: var(--ab-text);
}
.ab-title-accent {
  background: var(--ab-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.ab-p {
  position: relative;
  z-index: 1;
  font-size: 16px;
  color: var(--ab-text-secondary);
  line-height: 1.95;
  margin-bottom: 14px;
}
.ab-p strong { color: var(--ab-primary-dark); }
.ab-badges {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}
.ab-badge {
  font-size: 14px;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: 999px;
  background: rgba(21,176,237,.08);
  color: var(--ab-primary-dark);
  border: 1px solid rgba(21,176,237,.18);
  transition: transform .25s ease;
}
.ab-badge:hover { transform: translateY(-2px); }
.ab-badge-grad {
  background: var(--ab-grad);
  color: #fff;
  border: none;
  box-shadow: 0 10px 24px -10px rgba(14,143,192,.65);
}

/* 右侧：企业核心信息 */
.ab-info { display: flex; flex-direction: column; gap: 22px; }
.ab-info-card {
  position: relative;
  background: rgba(255,255,255,.78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(21,176,237,.16);
  border-radius: var(--ab-radius-xl);
  padding: 34px 38px;
  box-shadow: 0 24px 60px -30px rgba(21,176,237,.45);
  overflow: hidden;
}
.ab-info-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #15B0ED, #0E8FC0, #15B0ED);
  background-size: 200% 100%;
  animation: abBar 4s linear infinite;
}
@keyframes abBar {
  0% { background-position: 0 0; }
  100% { background-position: 200% 0; }
}
.ab-info-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.ab-info-head h3 { font-size: 20px; font-weight: 800; color: var(--ab-text); margin: 0; }
.ab-info-tag {
  font-size: 12px;
  font-weight: 700;
  padding: 6px 13px;
  border-radius: 999px;
  background: var(--ab-grad);
  color: #fff;
  box-shadow: 0 8px 18px -8px rgba(14,143,192,.65);
}
.ab-info-list { list-style: none; margin: 0; padding: 0; }
.ab-info-list li {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 13px 14px;
  border-radius: 12px;
  border-bottom: 1px solid var(--ab-border);
  transition: background .3s ease, transform .3s ease, border-color .3s ease;
}
.ab-info-list li:last-child { border-bottom: none; }
.ab-info-list li:hover {
  background: linear-gradient(90deg, rgba(21,176,237,.07), rgba(14,143,192,.03));
  transform: translateX(5px);
  border-bottom-color: transparent;
}
.ab-k { color: var(--ab-text-secondary); font-size: 15px; white-space: nowrap; }
.ab-v { font-weight: 600; color: var(--ab-text); font-size: 15px; text-align: right; }
.ab-v-grad {
  background: var(--ab-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.ab-highlight::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 58%;
  border-radius: 3px;
  background: linear-gradient(180deg, #15B0ED, #0E8FC0);
}

/* 使命 / 愿景 */
.ab-mv-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.ab-mv-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--ab-radius-lg);
  padding: 22px 20px;
  transition: transform .3s ease, box-shadow .3s ease;
}
.ab-mv-card:hover { transform: translateY(-5px); }
.ab-mv-mission {
  background: linear-gradient(135deg, #E8F6FD, #EFF9FE);
  box-shadow: 0 16px 36px -20px rgba(21,176,237,.55);
}
.ab-mv-vision {
  background: linear-gradient(135deg, #e6faf1, #EFF9FE);
  box-shadow: 0 16px 36px -20px rgba(5,122,85,.5);
}
.ab-mv-title { font-size: 13px; font-weight: 800; margin-bottom: 8px; }
.ab-mv-mission .ab-mv-title { color: var(--ab-primary-dark); }
.ab-mv-vision .ab-mv-title { color: #057a55; }
.ab-mv-card p { font-size: 14px; color: var(--ab-text); line-height: 1.7; margin: 0; }

/* ============================================
   2. 发展历程 · 横向时间轴
   ============================================ */
.ab-timeline-header { margin-bottom: 32px; text-align: center; }
.ab-timeline {
  display: flex;
  gap: 22px;
  position: relative;
  padding-top: 36px;
}
.ab-timeline::before {
  content: '';
  position: absolute;
  left: 12.5%;
  right: 12.5%;
  top: 26px;
  height: 3px;
  border-radius: 3px;
  background:
    radial-gradient(circle at left center, #15B0ED 0 4px, transparent 4.6px),
    radial-gradient(circle at right center, #0E8FC0 0 4px, transparent 4.6px),
    linear-gradient(90deg, #15B0ED, #0E8FC0);
  z-index: 4;
}
.ab-timeline-item {
  flex: 1 1 0;
  position: relative;
  background: var(--ab-bg-secondary);
  border-radius: var(--ab-radius-lg);
  padding: 40px 24px 28px;
  text-align: center;
  transition: transform .3s ease, box-shadow .3s ease;
}
.ab-timeline-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 34px -10px rgba(21,176,237,.22);
}
.ab-timeline-dot {
  position: absolute;
  top: -19px;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--ab-grad);
  box-shadow: 0 0 0 4px rgba(14,143,192,.2), 0 0 12px rgba(21,176,237,.4);
  z-index: 6;
}
.ab-timeline-year {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 10px;
  background: var(--ab-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.ab-timeline-content {
  font-size: 14px;
  color: var(--ab-text-secondary);
  line-height: 1.75;
}
.ab-timeline-content strong { color: var(--ab-primary-dark); }
/* 主线流动光效 */
.ab-timeline::after {
  content: '';
  position: absolute;
  left: 12.5%;
  right: 12.5%;
  top: 26px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0) 15%, rgba(255,255,255,.9) 50%, rgba(255,255,255,0) 85%, transparent 100%);
  background-size: 200% 100%;
  animation: abLineFlow 2.8s linear infinite;
  z-index: 5;
  pointer-events: none;
}
@keyframes abLineFlow {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============================================
   3. 授权资质
   ============================================ */
.ab-cert-subheader {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--ab-border);
}
.ab-cert-subheader:first-of-type { margin-top: 0; }
.ab-cert-sub-icon {
  font-size: 22px;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #E8F6FD, #EFF9FE);
  border-radius: 10px;
  flex-shrink: 0;
}
.ab-cert-subheader h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--ab-text);
  margin: 0;
  flex: 1;
}
.ab-cert-sub-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--ab-grad);
  color: #fff;
  white-space: nowrap;
  box-shadow: 0 4px 12px -4px rgba(14,143,192,.5);
}
.ab-cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.ab-cert-card {
  position: relative;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--ab-border);
  border-radius: var(--ab-radius-lg);
  transition: var(--ab-transition);
}
.ab-cert-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: var(--ab-grad-90);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s ease;
  z-index: 2;
}
.ab-cert-card:hover::before { transform: scaleX(1); }
.ab-cert-card:hover {
  transform: translateY(-6px);
  border-color: rgba(14,143,192,.35);
  box-shadow: 0 26px 55px -26px rgba(21,176,237,.5);
}
.ab-cert-card-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, #F0F9FE 0%, #E6F6FD 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--ab-primary-dark);
  font-weight: 600;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.ab-cert-card-image::after {
  content: '点击查看高清原图';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 8px;
  background: rgba(15,47,63,.72);
  color: #fff;
  font-size: 12px;
  text-align: center;
  transform: translateY(100%);
  transition: var(--ab-transition);
}
.ab-cert-card-image:hover::after { transform: translateY(0); }
.ab-cert-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 8px;
  border-radius: var(--ab-radius-md);
  transition: transform .3s ease, opacity .3s ease;
}
.ab-cert-card-image:hover img { transform: scale(1.03); }
.ab-cert-fallback {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  height: 100%;
  font-size: 28px;
  color: var(--ab-primary-dark);
  font-weight: 600;
}
.ab-cert-fallback span:last-child { font-size: 13px; font-weight: 500; }
.ab-cert-card-body { padding: 20px; }
.ab-cert-card-title { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--ab-text); }
.ab-cert-card-info { font-size: 14px; color: var(--ab-text-secondary); }
.ab-cert-card-info span { display: block; margin-bottom: 4px; }

/* 软著网格（更紧凑） */
.ab-cert-grid-copyright {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.ab-cert-grid-copyright .ab-cert-card-image { height: 160px; }
.ab-cert-grid-copyright .ab-cert-card-body { padding: 14px; }
.ab-cert-grid-copyright .ab-cert-card-title { font-size: 14px; }
.ab-cert-grid-copyright .ab-cert-card-info span { font-size: 12px; }

/* 核验提示横幅 */
.ab-verify-banner {
  background: linear-gradient(135deg, rgba(21,176,237,.08), rgba(14,143,192,.08));
  border: 1px solid rgba(21,176,237,.18);
  border-radius: var(--ab-radius-lg);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 32px;
}
.ab-verify-icon { font-size: 32px; flex-shrink: 0; }
.ab-verify-text h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ab-primary-dark);
  margin: 0 0 4px;
}
.ab-verify-text p { font-size: 14px; color: var(--ab-text-secondary); margin: 0; }

/* ============================================
   4. 我们的客户 · Logo 墙
   ============================================ */
.ab-clients-desc {
  white-space: nowrap;
  font-size: 15px;
  max-width: none;
}
.ab-client-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
  padding: 8px 0;
}
.ab-client-card {
  background: #fff;
  border-radius: var(--ab-radius-md);
  padding: 20px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  transition: var(--ab-transition);
  box-shadow: 0 1px 4px rgba(15,47,63,.06);
  border: 1px solid rgba(15,47,63,.06);
}
.ab-client-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(21,176,237,.14);
  border-color: rgba(21,176,237,.25);
}
.ab-client-card img {
  max-width: 100%;
  max-height: 56px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(30%);
  opacity: .85;
  transition: var(--ab-transition);
}
.ab-client-card:hover img { filter: none; opacity: 1; }

/* ============================================
   5. 经营数据
   ============================================ */
.ab-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.ab-stat-card {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 32px 16px;
  background: #fff;
  border-radius: var(--ab-radius-lg);
  border: 1px solid var(--ab-border);
  transition: var(--ab-transition);
}
.ab-stat-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: var(--ab-grad-90);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s ease;
}
.ab-stat-card:hover::before { transform: scaleX(1); }
.ab-stat-card:hover {
  transform: translateY(-6px);
  border-color: rgba(14,143,192,.35);
  box-shadow: 0 26px 55px -26px rgba(21,176,237,.5);
}
.ab-stat-number {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 8px;
  background: var(--ab-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.ab-stat-label {
  font-size: 15px;
  color: var(--ab-text-secondary);
  font-weight: 500;
}

/* ============================================
   6. CTA
   ============================================ */
.ab-cta {
  background: linear-gradient(135deg, #15B0ED, #0E8FC0);
  color: #fff;
  text-align: center;
}
.ab-cta h2 { font-size: 32px; font-weight: 800; margin: 0 0 16px; }
.ab-cta p { font-size: 17px; opacity: .92; margin: 0 0 32px; }
.ab-cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.ab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--ab-radius-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--ab-transition);
  border: none;
  text-decoration: none;
}
.ab-btn-white { background: #fff; color: var(--ab-primary-dark); }
.ab-btn-white:hover { background: var(--ab-primary-light); transform: translateY(-2px); }
.ab-btn-ghost { background: transparent; color: #fff; border: 2px solid #fff; }
.ab-btn-ghost:hover { background: rgba(255,255,255,.12); transform: translateY(-2px); }

/* ============================================
   证书弹窗
   ============================================ */
.ab-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,47,63,.82);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.ab-modal-overlay.active { display: flex; }
.ab-modal-preview {
  max-width: 600px;
  max-height: 84vh;
  overflow: auto;
  background: #fff;
  border-radius: var(--ab-radius-lg);
  padding: 24px;
  text-align: center;
  cursor: default;
  position: relative;
}
.ab-modal-close {
  position: absolute;
  top: 10px;
  right: 14px;
  background: none;
  border: none;
  color: var(--ab-text-light);
  font-size: 30px;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}
.ab-modal-close:hover { color: var(--ab-text); }
.ab-modal-preview h3 { margin: 0 0 16px; font-size: 18px; color: var(--ab-text); padding-right: 30px; }
.ab-modal-img {
  display: none;
  max-width: 100%;
  max-height: 70vh;
  margin: 0 auto;
  border-radius: var(--ab-radius-md);
  box-shadow: 0 10px 40px rgba(15,47,63,.2);
}
.ab-modal-placeholder {
  width: 100%;
  height: 300px;
  background: linear-gradient(135deg, #F0F9FE 0%, #E6F6FD 100%);
  border-radius: var(--ab-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--ab-text-secondary);
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1023px) {
  .ab-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .ab-client-grid { grid-template-columns: repeat(4, 1fr); gap: 18px; }
}
@media (max-width: 767px) {
  .ab-sec-title { font-size: 28px; }
  .ab-overview { grid-template-columns: 1fr; gap: 28px; }
  .ab-intro { padding: 36px 28px; }
  .ab-info-card { padding: 28px 24px; }
  .ab-stats-grid { grid-template-columns: 1fr; }
  .ab-client-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; }
  .ab-client-card { min-height: 80px; padding: 14px 12px; }
  .ab-client-card img { max-height: 44px; }
  .ab-clients-desc { white-space: normal; font-size: 13px; }
  .ab-cert-grid, .ab-cert-grid-copyright { grid-template-columns: 1fr; }
  .ab-cert-subheader { flex-wrap: wrap; gap: 8px; }
  .ab-cert-subheader h3 { font-size: 15px; width: 100%; margin-bottom: 2px; }
  .ab-cta h2 { font-size: 26px; }
  /* 横向时间轴转纵向 */
  .ab-timeline { flex-direction: column; gap: 0; padding-top: 0; }
  .ab-timeline::before {
    left: 8px;
    top: 6px;
    bottom: 6px;
    right: auto;
    width: 2px;
    height: auto;
    background: linear-gradient(180deg, #15B0ED, #0E8FC0);
  }
  .ab-timeline::after { display: none; }
  .ab-timeline-item { text-align: left; padding: 0 0 30px 34px; background: none; border-radius: 0; }
  .ab-timeline-item:last-child { padding-bottom: 0; }
  .ab-timeline-item:hover { transform: none; box-shadow: none; }
  .ab-timeline-dot { top: 6px; left: 8px; transform: translateX(-50%); }
}