/* ====================================================
   智慧互动 关于我们页面专用样式
   about.css — 复用 style.css 设计系统
   ==================================================== */

/* ===== 页面 Hero（面包屑 + 标题区） ===== */
.page-hero {
  position: relative;
  padding: 80px 0 60px;
  overflow: hidden;
  background: linear-gradient(135deg, #0a2a6e 0%, #0052CC 55%, #0077e6 100%);
  color: #fff;
}

.page-hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 80% 50%, rgba(0,198,255,.18) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 20% 80%, rgba(255,255,255,.06) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero__content {
  position: relative;
  z-index: 1;
}

/* 面包屑 */
.breadcrumb {
  margin-bottom: 20px;
}

.breadcrumb__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: .85rem;
}

.breadcrumb__link {
  color: rgba(255,255,255,.75);
  text-decoration: none;
  transition: color .2s;
}

.breadcrumb__link:hover { color: #fff; }

.breadcrumb__sep {
  color: rgba(255,255,255,.45);
  font-size: .8rem;
}

.breadcrumb__current {
  color: rgba(255,255,255,.9);
  font-weight: 500;
}

.page-hero__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  margin: 0 0 14px;
  line-height: 1.2;
  letter-spacing: -.01em;
}

.page-hero__desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,.82);
  margin: 0;
  letter-spacing: .01em;
}

/* ===== 公司概况模块 ===== */
.about-intro {
  background: #fff;
}

.about-intro__layout {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 56px;
  align-items: start;
}

.about-section-title {
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
}

.about-intro__lead {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.about-intro__lead strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.about-intro__body {
  font-size: .95rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 14px;
}

.about-intro__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.about-tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 100px;
  font-size: .82rem;
  font-weight: 600;
  background: var(--color-bg-soft);
  color: var(--color-primary);
  border: 1px solid #d0e2ff;
  letter-spacing: .02em;
}

.about-tag--hot {
  background: linear-gradient(90deg, #0052CC, #00C6FF);
  color: #fff;
  border-color: transparent;
}

/* 右侧数据卡片 */
.about-intro__stats {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about-stats-card {
  background: linear-gradient(135deg, #0a2a6e 0%, #0052CC 100%);
  border-radius: 16px;
  padding: 32px 28px;
  color: #fff;
}

.about-stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 16px 0;
}

.about-stat-item:first-child { padding-top: 0; }
.about-stat-item:last-child  { padding-bottom: 0; }

.about-stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
  color: #fff;
}

.about-stat-unit {
  font-size: 1rem;
  font-weight: 700;
  color: rgba(255,255,255,.85);
  margin-left: 2px;
}

.about-stat-label {
  font-size: .82rem;
  color: rgba(255,255,255,.7);
  margin-top: 4px;
  letter-spacing: .02em;
}

.about-stat-divider {
  height: 1px;
  background: rgba(255,255,255,.15);
  width: 100%;
}

/* 荣誉条 */
.about-honor-strip {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  padding: 16px 20px;
}

.about-honor-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .88rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ===== 核心价值观 ===== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.value-card {
  background: #fff;
  border-radius: 14px;
  border: 1px solid var(--color-border);
  padding: 36px 28px;
  text-align: center;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.value-card:hover {
  box-shadow: 0 12px 36px rgba(0,82,204,.12);
  transform: translateY(-4px);
}

.value-card__icon {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.value-card__title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 12px;
  letter-spacing: .02em;
}

.value-card__desc {
  font-size: .9rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ===== 六大业务模块 ===== */
.biz-section {
  background: #fff;
}

.biz-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.biz-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 28px 24px 24px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  overflow: hidden;
}

.biz-card:hover {
  box-shadow: 0 10px 32px rgba(0,82,204,.10);
  transform: translateY(-3px);
}

.biz-card--featured {
  background: linear-gradient(145deg, #0052CC 0%, #0077e6 60%, #00C6FF 100%);
  border-color: transparent;
  color: #fff;
}

.biz-card__badge {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: .7rem;
  font-weight: 700;
  background: #FFE380;
  color: #172B4D;
  border-radius: 4px;
  padding: 2px 8px;
  letter-spacing: .04em;
}

.biz-card__num {
  font-size: 2.5rem;
  font-weight: 900;
  color: #e8f0fe;
  line-height: 1;
  margin-bottom: 4px;
  letter-spacing: -.03em;
}

.biz-card__num--light {
  color: rgba(255,255,255,.15);
}

.biz-card__icon {
  margin-bottom: 14px;
}

.biz-icon--blue   svg path, .biz-icon--blue   svg circle, .biz-icon--blue   svg rect { stroke-color: #0052CC; }
.biz-icon--white  { filter: brightness(10); }

.biz-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.biz-card--featured .biz-card__title {
  color: #fff;
}

.biz-card__desc {
  font-size: .87rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.biz-card--featured .biz-card__desc {
  color: rgba(255,255,255,.85);
}

/* 业务标签 */
.biz-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.biz-card__tags li {
  font-size: .75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  background: #EBF2FF;
  color: var(--color-primary);
  border: 1px solid #d0e2ff;
}

.biz-card--featured .biz-card__tags li {
  background: rgba(255,255,255,.18);
  color: #fff;
  border-color: rgba(255,255,255,.3);
}

/* ===== 平台传播能力 ===== */
.platform-section {
  background: var(--color-bg-soft);
}

.platform-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 56px;
  align-items: center;
}

.platform-items {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.platform-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.platform-item__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 6px;
}

.platform-dot--blue   { background: var(--color-primary); box-shadow: 0 0 0 4px rgba(0,82,204,.12); }
.platform-dot--green  { background: #00875A; box-shadow: 0 0 0 4px rgba(0,135,90,.12); }
.platform-dot--orange { background: #FF8B00; box-shadow: 0 0 0 4px rgba(255,139,0,.12); }
.platform-dot--purple { background: #6554C0; box-shadow: 0 0 0 4px rgba(101,84,192,.12); }

.platform-item__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.platform-item__desc {
  font-size: .88rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin: 0;
}

/* 可视化平台图 */
.platform-visual {
  display: flex;
  justify-content: center;
}

.platform-visual__card {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.platform-visual__center {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #fff;
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  width: 80px;
  height: 80px;
  justify-content: center;
  box-shadow: 0 0 0 12px rgba(0,82,204,.08), 0 0 0 24px rgba(0,82,204,.04);
}

.pv-name {
  font-size: .65rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 2px;
}

/* 平台节点 */
.platform-nodes {
  position: absolute;
  inset: 0;
}

.pnode {
  position: absolute;
  font-size: .72rem;
  font-weight: 700;
  background: #fff;
  border: 1.5px solid var(--color-border);
  border-radius: 20px;
  padding: 4px 11px;
  color: var(--color-text-secondary);
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
  white-space: nowrap;
}

/* 8个节点环绕分布 */
.pnode--1 { top:  10px; left: 50%; transform: translateX(-50%); }
.pnode--2 { top:  50px; right: 0;  }
.pnode--3 { top: 50%;   right: -10px; transform: translateY(-50%); }
.pnode--4 { bottom: 50px; right: 10px; }
.pnode--5 { bottom: 10px; left: 50%; transform: translateX(-50%); }
.pnode--6 { bottom: 50px; left: 0; }
.pnode--7 { top: 50%;   left: -10px; transform: translateY(-50%); }
.pnode--8 { top:  50px; left: 10px; }

/* ===== 发展历程 ===== */
.timeline-section {
  background: #fff;
}

.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 860px;
  margin: 0 auto;
}

/* 竖线 */
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary) 0%, #e0e8f5 100%);
  transform: translateX(-50%);
}

.timeline-item {
  display: grid;
  grid-template-columns: 1fr 40px 1fr;
  gap: 0 20px;
  align-items: flex-start;
  margin-bottom: 48px;
}

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

/* 奇数：年份左，卡片右 */
.timeline-year {
  text-align: right;
  padding-top: 8px;
  font-size: .9rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: .02em;
}

.timeline-dot {
  position: relative;
  width: 16px;
  height: 16px;
  background: #fff;
  border: 3px solid var(--color-primary);
  border-radius: 50%;
  margin: 8px auto 0;
  z-index: 1;
  flex-shrink: 0;
}

.timeline-dot--active {
  background: var(--color-primary);
  box-shadow: 0 0 0 6px rgba(0,82,204,.18);
}

.timeline-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 20px 22px;
  position: relative;
}

.timeline-card--active {
  border-color: var(--color-primary);
  box-shadow: 0 4px 20px rgba(0,82,204,.10);
}

/* 偶数条目：年份右，卡片左 */
.timeline-item--right .timeline-year {
  order: 3;
  text-align: left;
}

.timeline-item--right .timeline-dot {
  order: 2;
}

.timeline-item--right .timeline-card {
  order: 1;
  text-align: right;
}

.timeline-item--right .timeline-card__points {
  text-align: right;
  padding-right: 0;
  padding-left: 0;
}

.timeline-item--right .timeline-card__points li::before {
  content: none;
}

.timeline-now-badge {
  display: inline-block;
  font-size: .7rem;
  font-weight: 700;
  background: var(--color-primary);
  color: #fff;
  border-radius: 4px;
  padding: 2px 8px;
  margin-bottom: 8px;
  letter-spacing: .04em;
}

.timeline-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.timeline-card__desc {
  font-size: .87rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.timeline-card__points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline-card__points li {
  font-size: .82rem;
  color: var(--color-primary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.timeline-card__points li::before {
  content: '✓';
  font-size: .7rem;
  font-weight: 800;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ===== 我们的客户 ===== */
.clients-section {
  background: var(--color-bg-soft);
}

/* 数据亮点条 */
.clients-highlight {
  display: flex;
  justify-content: center;
  gap: 0;
  max-width: 720px;
  margin: 0 auto 32px;
  background: var(--color-primary);
  border-radius: 12px;
  overflow: hidden;
}

.clients-highlight__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 18px 20px;
  color: #fff;
  position: relative;
}

.clients-highlight__item + .clients-highlight__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 20%;
  bottom: 20%;
  width: 1px;
  background: rgba(255,255,255,.2);
}

.clients-highlight__num {
  font-size: 1.65rem;
  font-weight: 800;
  line-height: 1;
}

.clients-highlight__label {
  font-size: .78rem;
  color: rgba(255,255,255,.75);
  margin-top: 4px;
}

/* 行业标签行 */
.clients-industries-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.clients-industries-label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-right: 4px;
}

.clients-industries {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.industry-tag {
  font-size: .8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  background: #fff;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* Logo 墙 — 居中约束、结构化 */
.clients-logo-wall {
  max-width: 960px;
  margin: 0 auto 24px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: #fff;
  box-shadow: 0 4px 24px rgba(0,0,0,.06);
}

.clients-logo-wall__header {
  display: flex;
  align-items: center;
  padding: 14px 24px;
  background: linear-gradient(180deg, #f8fafc 0%, #fff 100%);
  border-bottom: 1px solid var(--color-border);
}

.clients-logo-wall__label {
  font-size: .82rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: .5px;
}

.clients-logo-wall__label::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--color-primary);
  margin-right: 8px;
  vertical-align: middle;
  margin-top: -1px;
}

.clients-logo-wall__body {
  padding: 24px;
}

.clients-logo-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* 底部描述 */
.clients-desc {
  text-align: center;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

.clients-desc strong {
  color: var(--color-primary);
}

/* ===== 关于页 CTA ===== */
.about-cta {
  background: linear-gradient(135deg, #0a2a6e 0%, #0052CC 60%, #0077e6 100%);
  color: #fff;
}

.about-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.about-cta__title {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 800;
  margin: 0 0 10px;
  color: #fff;
}

.about-cta__desc {
  font-size: 1rem;
  color: rgba(255,255,255,.82);
  margin: 0 0 16px;
}

.about-cta__contact {
  display: flex;
  align-items: center;
  gap: 14px;
}

.about-cta__tel {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
}

.about-cta__note {
  font-size: .82rem;
  color: rgba(255,255,255,.65);
}

.about-cta__actions {
  display: flex;
  gap: 14px;
  flex-shrink: 0;
  flex-wrap: wrap;
}

/* 白色描边按钮 */
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border: 2px solid rgba(255,255,255,.65);
  border-radius: var(--radius-full);
  background: transparent;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-base);
}

.btn-outline:hover {
  background: rgba(255,255,255,.12);
  border-color: #fff;
}

/* ===== 关于页JS辅助动画类 ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .55s ease, transform .55s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: none;
}

/* ============================================================
   响应式适配
   ============================================================ */

/* 平板 ≤ 980px */
@media (max-width: 980px) {
  .about-intro__layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-intro__stats {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 12px;
  }

  .about-stats-card {
    flex: 1;
    min-width: 220px;
  }

  .about-honor-strip {
    flex: 1;
    min-width: 220px;
  }

  .values-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .biz-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .platform-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .platform-visual {
    display: none;
  }

  .about-cta__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  /* 时间线平板：单列 */
  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    grid-template-columns: 40px 1fr;
    grid-template-rows: auto auto;
  }

  .timeline-year {
    grid-column: 2;
    grid-row: 1;
    text-align: left;
    padding-top: 4px;
  }

  .timeline-dot {
    grid-column: 1;
    grid-row: 1 / 3;
    margin: 6px 0 0 12px;
  }

  .timeline-card {
    grid-column: 2;
    grid-row: 2;
  }

  .timeline-item--right .timeline-year {
    order: unset;
    text-align: left;
  }

  .timeline-item--right .timeline-dot { order: unset; }
  .timeline-item--right .timeline-card { order: unset; text-align: left; }
  .timeline-item--right .timeline-card__points li::before { content: '✓'; }
}

/* 手机 ≤ 640px */
@media (max-width: 640px) {
  .page-hero { padding: 56px 0 40px; }
  .page-hero__title { font-size: 1.6rem; }

  .values-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .value-card { padding: 24px 20px; }

  .biz-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  /* 数据条移动端改为两行两列 */
  .clients-highlight {
    flex-wrap: wrap;
    border-radius: 10px;
  }

  .clients-highlight__item {
    flex: 0 0 50%;
  }

  .clients-highlight__item:nth-child(3)::before {
    content: '';
    position: absolute;
    left: 20%;
    right: 20%;
    top: 0;
    height: 1px;
    background: rgba(255,255,255,.2);
  }

  .clients-industries-wrap {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  .clients-desc {
    font-size: .85rem;
    padding: 0 8px;
  }

  .about-cta__actions {
    width: 100%;
  }

  .about-cta__actions .btn {
    flex: 1;
    text-align: center;
    justify-content: center;
  }
}