.page-about {
  --about-deep: #0B1D3A;
  --about-mid: #1F3A5F;
  --about-cyan: #3E9BCC;
  --about-orange: #FF7A00;
  --about-muted: #7B8A99;
  --about-text: #17202A;
  background: var(--c-bg);
  color: var(--about-text);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== Hero ===== */
.page-about .about-hero {
  background: linear-gradient(160deg, var(--about-deep) 0%, var(--about-mid) 60%, var(--about-cyan) 135%);
  color: #fff;
  padding: 40px 0 64px;
  position: relative;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(62, 155, 204, 0.18);
  top: -80px;
  right: -60px;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(255, 122, 0, 0.14);
  bottom: 20px;
  left: 8%;
  pointer-events: none;
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  margin-bottom: 40px;
  color: rgba(255, 255, 255, 0.65);
}

.page-about .breadcrumb a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--about-orange);
}

.page-about .breadcrumb-sep {
  color: rgba(255, 255, 255, 0.4);
}

.page-about .about-hero-grid {
  display: grid;
  gap: 36px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.page-about .about-hero-kicker {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--about-orange);
  margin: 0 0 12px;
}

.page-about .about-hero h1 {
  font-size: 34px;
  font-weight: 900;
  line-height: 1.18;
  margin: 0 0 10px;
  color: #fff;
}

.page-about .about-hero-lead {
  font-size: 18px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.88);
  margin: 0 0 18px;
}

.page-about .about-hero-desc {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.72);
  max-width: 520px;
  margin: 0 0 32px;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .about-hero-actions .btn--outline {
  border-color: rgba(255, 255, 255, 0.65);
  color: #fff;
}

.page-about .about-hero-actions .btn--outline:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.page-about .about-hero-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
}

.page-about .about-hero-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== Section Head ===== */
.page-about .section-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 40px;
}

.page-about .section-index {
  font-family: var(--font-caption);
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  color: var(--about-cyan);
  letter-spacing: -1px;
}

.page-about .section-title-wrap h2 {
  font-size: 26px;
  font-weight: 800;
  margin: 0;
  color: var(--about-text);
  line-height: 1.25;
}

.page-about .side-note {
  display: block;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--about-muted);
  margin-top: 4px;
}

/* ===== 品牌使命 ===== */
.page-about .about-mission {
  padding: 56px 0;
  background: var(--c-bg);
}

.page-about .mission-body {
  display: grid;
  gap: 32px;
  align-items: center;
  margin-bottom: 44px;
}

.page-about .mission-statement {
  font-size: 22px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--about-deep);
  margin: 0 0 16px;
}

.page-about .mission-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-muted);
  margin: 0;
  max-width: 620px;
}

.page-about .mission-emblem {
  margin: 0;
  display: flex;
  justify-content: center;
}

.page-about .mission-emblem-img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 16px 36px rgba(11, 29, 58, 0.18);
}

.page-about .mission-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.page-about .mission-point {
  text-align: center;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px 12px 20px;
  box-shadow: 0 8px 24px rgba(11, 29, 58, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .mission-point:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(11, 29, 58, 0.12);
}

.page-about .mission-num {
  font-family: var(--font-caption);
  font-size: 34px;
  font-weight: 800;
  color: var(--about-orange);
  display: block;
  line-height: 1;
}

.page-about .mission-point p {
  font-size: 13px;
  color: var(--about-muted);
  margin: 10px 0 0;
}

/* ===== 发展历程 ===== */
.page-about .about-timeline-section {
  padding: 56px 0 64px;
  background: linear-gradient(180deg, #EAF1F8 0%, #FFFFFF 100%);
}

.page-about .timeline {
  position: relative;
  padding-left: 34px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--about-cyan), var(--about-orange));
  border-radius: 2px;
}

.page-about .timeline-item {
  position: relative;
  margin-bottom: 44px;
}

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

.page-about .timeline-node {
  position: absolute;
  left: -34px;
  top: 6px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--about-deep);
  border: 3px solid var(--about-cyan);
  box-shadow: 0 0 0 4px #fff;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s ease, transform 0.3s ease;
}

.page-about .timeline-node-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--about-cyan);
}

.page-about .timeline-item:hover .timeline-node {
  background: var(--about-orange);
  border-color: var(--about-orange);
  transform: scale(1.1);
}

.page-about .timeline-item:hover .timeline-node-dot {
  background: #fff;
}

.page-about .timeline-content {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 22px 20px;
  box-shadow: 0 8px 24px rgba(11, 29, 58, 0.07);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .timeline-content:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(11, 29, 58, 0.13);
}

.page-about .timeline-year {
  font-family: var(--font-caption);
  font-size: 32px;
  font-weight: 800;
  color: var(--about-orange);
  line-height: 1;
  margin-bottom: 8px;
}

.page-about .timeline-content h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--about-text);
  margin: 0 0 8px;
}

.page-about .timeline-content p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--about-muted);
  margin: 0;
}

/* ===== 中国本地化 ===== */
.page-about .about-localization {
  padding: 56px 0;
  background: #fff;
}

.page-about .about-localization .section-head h2 {
  color: var(--about-text);
}

.page-about .localization-grid {
  display: grid;
  gap: 20px;
}

.page-about .localization-card {
  background: var(--c-bg);
  border: 1px solid #E8EEF4;
  border-radius: var(--radius-lg);
  padding: 30px 24px 26px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.page-about .localization-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 40px rgba(11, 29, 58, 0.1);
  border-color: var(--about-cyan);
}

.page-about .localization-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--about-cyan), var(--about-mid));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}

.page-about .localization-card h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--about-text);
  margin: 0 0 12px;
}

.page-about .localization-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-muted);
  margin: 0 0 18px;
}

.page-about .localization-link {
  font-size: 14px;
  font-weight: 700;
  color: var(--about-orange);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-about .localization-link:hover {
  color: var(--about-deep);
}

/* ===== 资质与认证 ===== */
.page-about .about-certification {
  background: linear-gradient(135deg, var(--about-deep) 0%, var(--about-mid) 100%);
  padding: 56px 0 64px;
  color: #fff;
}

.page-about .about-certification .section-head h2 {
  color: #fff;
}

.page-about .about-certification .side-note {
  color: rgba(255, 255, 255, 0.45);
}

.page-about .cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about .cert-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 24px 16px 20px;
  text-align: center;
  transition: background 0.3s ease, transform 0.3s ease;
}

.page-about .cert-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-3px);
}

.page-about .cert-badge {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--about-orange), #FFA24D);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
}

.page-about .cert-card h3 {
  font-size: 16px;
  font-weight: 800;
  margin: 0 0 6px;
}

.page-about .cert-card p {
  font-size: 12px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.62);
  margin: 0;
}

/* ===== 团队与专利 ===== */
.page-about .about-team {
  padding: 56px 0;
  background: linear-gradient(180deg, #F0F6FC 0%, #FFFFFF 100%);
}

.page-about .team-intro p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--about-muted);
  max-width: 660px;
  margin: 0 0 36px;
}

.page-about .team-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.page-about .team-stat {
  text-align: center;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px 12px 24px;
  box-shadow: 0 8px 24px rgba(11, 29, 58, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .team-stat:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(11, 29, 58, 0.12);
}

.page-about .team-stat-num {
  font-family: var(--font-caption);
  font-size: 40px;
  font-weight: 800;
  color: var(--about-cyan);
  line-height: 1;
  display: block;
}

.page-about .team-stat-label {
  font-size: 13px;
  color: var(--about-muted);
  margin-top: 12px;
  display: block;
}

.page-about .team-rd {
  margin-top: 36px;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 8px 24px rgba(11, 29, 58, 0.06);
}

.page-about .team-rd-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--about-muted);
  margin-bottom: 14px;
}

.page-about .team-rd-head strong {
  font-size: 26px;
  color: var(--about-deep);
  font-family: var(--font-caption);
}

.page-about .team-rd-track {
  height: 12px;
  border-radius: 6px;
  background: var(--c-card);
  overflow: hidden;
}

.page-about .team-rd-fill {
  display: block;
  height: 100%;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--about-cyan), var(--about-orange));
}

/* ===== 合作伙伴 ===== */
.page-about .about-partners {
  padding: 56px 0;
  background: #fff;
}

.page-about .partner-body {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-about .partner-network {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 18px 44px rgba(11, 29, 58, 0.14);
}

.page-about .partner-network-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .partner-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-muted);
  margin: 0 0 28px;
}

.page-about .partner-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about .partner-stat {
  text-align: center;
  padding: 28px 16px 24px;
  background: linear-gradient(135deg, #F0F6FC, #EAF1F8);
  border-radius: var(--radius-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .partner-stat:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(11, 29, 58, 0.1);
}

.page-about .partner-stat-num {
  font-family: var(--font-caption);
  font-size: 42px;
  font-weight: 800;
  color: var(--about-deep);
  display: block;
  line-height: 1;
}

.page-about .partner-stat-label {
  font-size: 13px;
  color: var(--about-muted);
  margin-top: 10px;
  display: block;
}

/* ===== CTA ===== */
.page-about .about-cta {
  background: linear-gradient(135deg, var(--about-mid) 0%, var(--about-deep) 100%);
  padding: 56px 0 64px;
  color: #fff;
  text-align: center;
}

.page-about .about-cta h2 {
  font-size: 26px;
  font-weight: 800;
  margin: 0 0 12px;
  line-height: 1.3;
}

.page-about .about-cta p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  margin: 0 0 32px;
}

.page-about .about-cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .about-cta-actions .btn--outline {
  border-color: rgba(255, 255, 255, 0.65);
  color: #fff;
}

.page-about .about-cta-actions .btn--outline:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

/* ===== 平板 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 56px 0 80px;
  }

  .page-about .about-hero h1 {
    font-size: 46px;
  }

  .page-about .about-hero-lead {
    font-size: 20px;
  }

  .page-about .mission-body {
    grid-template-columns: 1fr auto;
  }

  .page-about .mission-emblem-img {
    width: 200px;
    height: 200px;
  }

  .page-about .mission-num {
    font-size: 42px;
  }

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

  .page-about .cert-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .team-stat-num {
    font-size: 48px;
  }

  .page-about .team-stats {
    gap: 20px;
  }

  .page-about .partner-body {
    grid-template-columns: 1.1fr 1fr;
    gap: 40px;
  }

  .page-about .about-cta h2 {
    font-size: 32px;
  }
}

/* ===== 桌面 ===== */
@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 72px 0 100px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1fr 1.05fr;
  }

  .page-about .about-hero h1 {
    font-size: 54px;
  }

  .page-about .about-hero-desc {
    font-size: 16px;
  }

  .page-about .about-mission,
  .page-about .about-localization,
  .page-about .about-team,
  .page-about .about-partners {
    padding: 80px 0;
  }

  .page-about .about-timeline-section {
    padding: 80px 0 88px;
  }

  .page-about .about-certification {
    padding: 80px 0 88px;
  }

  .page-about .about-cta {
    padding: 80px 0 88px;
  }

  .page-about .section-index {
    font-size: 56px;
  }

  .page-about .section-title-wrap h2 {
    font-size: 34px;
  }

  .page-about .mission-statement {
    font-size: 26px;
  }

  .page-about .mission-desc {
    font-size: 16px;
    max-width: 560px;
  }

  .page-about .mission-points {
    gap: 24px;
  }

  .page-about .mission-point {
    padding: 28px 16px 24px;
  }

  .page-about .mission-num {
    font-size: 48px;
  }

  /* 时间线左右交替 */
  .page-about .timeline {
    padding-left: 0;
  }

  .page-about .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .timeline-item {
    width: 50%;
    padding-right: 52px;
    margin-bottom: 56px;
  }

  .page-about .timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 52px;
  }

  .page-about .timeline-node {
    left: auto;
    right: -14px;
    width: 32px;
    height: 32px;
  }

  .page-about .timeline-item:nth-child(even) .timeline-node {
    right: auto;
    left: -14px;
  }

  .page-about .timeline-content {
    padding: 28px 26px;
  }

  .page-about .timeline-year {
    font-size: 38px;
  }

  .page-about .localization-card {
    padding: 34px 28px 30px;
  }

  .page-about .cert-card {
    padding: 28px 20px 24px;
  }

  .page-about .team-rd {
    padding: 28px 32px;
  }
}