.page-about {
  --about-muted: #6B6B6B;
  --about-soft-bg: #F7F4F0;
  --about-border: #EDE8E2;
  background: var(--white);
  color: var(--grey);
}

/* 面包屑 */
.about-breadcrumb {
  padding-top: 16px;
}
.about-breadcrumb .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 14px;
}
.about-breadcrumb .breadcrumb a {
  color: var(--blue);
  text-decoration: none;
}
.about-breadcrumb .breadcrumb a:hover {
  color: var(--red);
}
.about-breadcrumb .breadcrumb-sep {
  color: #B8B2AC;
}
.about-breadcrumb .breadcrumb span[aria-current="page"] {
  color: var(--grey);
  font-weight: 600;
}

/* 首屏 */
.about-hero {
  background:
    radial-gradient(circle at 88% 22%, rgba(212, 175, 55, .08) 0, transparent 180px),
    linear-gradient(165deg, var(--white) 0%, #F2EDE8 100%);
  padding: 28px 0 56px;
  border-bottom: 1px solid var(--light);
}
.about-hero-grid {
  display: grid;
  gap: 32px;
}
.about-hero-main {
  order: 1;
}
.about-hero-side {
  order: 2;
  background: var(--white);
  border: 1px solid var(--light);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.about-eyebrow {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--red);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.about-hero h1 {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 32px;
  line-height: 1.25;
  margin-bottom: 14px;
}
.about-hero-lead {
  font-size: 17px;
  line-height: 1.7;
  color: var(--about-muted);
  max-width: 560px;
  margin-bottom: 28px;
}
.about-hero-facts {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.about-hero-fact {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.about-hero-num {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 28px;
  line-height: 1;
  color: var(--red);
}
.about-hero-label {
  font-size: 13px;
  color: var(--about-muted);
}
.about-side-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 14px;
  color: var(--blue);
  margin-bottom: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.about-toc {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 16px;
}
.about-toc a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--grey);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.about-toc a:hover {
  background: var(--light);
  border-left-color: var(--red);
  color: var(--red);
}
.about-toc-index {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 13px;
  color: var(--gold);
}
.about-side-link {
  display: block;
  font-size: 14px;
  color: var(--blue);
  text-decoration: none;
  border-top: 1px solid var(--light);
  padding-top: 14px;
}
.about-side-link:hover {
  color: var(--red);
}

/* 通用分段 */
.about-section {
  padding: 64px 0;
}
.about-section-index {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .3em;
  color: var(--gold);
  margin-bottom: 6px;
}
.about-section h2 {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 28px;
  line-height: 1.3;
  margin-bottom: 12px;
}
.about-section-lead {
  font-size: 17px;
  line-height: 1.7;
  color: var(--about-muted);
  max-width: 560px;
  margin-bottom: 28px;
}

/* 01 品牌使命 */
.about-mission {
  background: var(--light);
  padding: 64px 0;
}
.about-mission-grid {
  display: grid;
  gap: 36px;
}
.about-mission-copy p {
  margin-bottom: 16px;
  line-height: 1.8;
}
.about-mission-intro {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  color: var(--blue);
  margin-bottom: 12px;
}
.about-mission-media {
  margin: 0;
}
.about-mission-media img {
  width: 100%;
  max-width: 500px;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: block;
}
.about-mission-media figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--about-muted);
  line-height: 1.6;
}

/* 02 发展历程 */
.about-timeline-section {
  background: var(--white);
  padding: 64px 0;
}
.about-timeline {
  position: relative;
  margin-top: 36px;
}
.about-timeline::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 7px;
  width: 2px;
  background: linear-gradient(to bottom, var(--red), rgba(160, 48, 40, .25));
}
.about-timeline-item {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
}
.about-timeline-col {
  width: 16px;
  flex-shrink: 0;
  position: relative;
}
.about-dot {
  position: relative;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--blue);
  border: 2px solid var(--white);
  box-shadow: 0 0 0 2px var(--red);
  display: block;
  margin-top: 18px;
}
.about-dot::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--gold);
}
.about-timeline-card {
  flex: 1;
  min-width: 0;
  background: var(--about-soft-bg);
  border: 1px solid var(--about-border);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: transform var(--transition), border-color var(--transition);
}
.about-timeline-card:hover {
  transform: translateX(4px);
  border-color: var(--red);
}
.about-timeline-year {
  display: inline-block;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--red);
  background: rgba(160, 48, 40, .08);
  border-radius: 999px;
  padding: 2px 10px;
  margin-bottom: 8px;
}
.about-timeline-card h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
  margin-bottom: 6px;
}
.about-timeline-card p {
  font-size: 15px;
  line-height: 1.7;
  color: #555;
}
.about-timeline-figure {
  margin: 36px 0 0;
}
.about-timeline-figure img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: block;
}

/* 03 资质与认证 */
.about-credentials {
  background: var(--light-blue);
  padding: 64px 0;
}
.about-cred-grid {
  display: grid;
  gap: 36px;
}
.about-cred-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 20px;
}
.about-cred-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  box-shadow: var(--shadow);
}
.about-cred-badge {
  flex-shrink: 0;
  background: var(--blue);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  padding: 4px 12px;
  white-space: nowrap;
}
.about-cred-item p {
  font-size: 15px;
  line-height: 1.7;
  color: #555;
  margin: 0;
}
.about-cred-media {
  margin: 0;
}
.about-cred-media img {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: block;
}
.about-cred-media figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: #5A5A5A;
  line-height: 1.6;
}

/* 04 团队与组织 */
.about-team {
  background: var(--light);
  padding: 64px 0;
}
.about-team-layout {
  display: grid;
  gap: 20px;
  margin-top: 28px;
}
.about-team-block {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.about-team-num {
  display: block;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 36px;
  line-height: 1;
  color: var(--red);
  margin-bottom: 10px;
}
.about-team-block h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
  margin-bottom: 8px;
}
.about-team-block p {
  font-size: 15px;
  line-height: 1.7;
  color: #555;
}
.about-team-note {
  background: var(--blue);
  color: var(--white);
  border-radius: var(--radius);
  padding: 24px;
}
.about-team-note p {
  color: rgba(255, 255, 255, .92);
  font-size: 15px;
  line-height: 1.8;
}
.about-team-link {
  display: inline-block;
  margin-top: 14px;
  color: var(--gold);
  font-weight: 600;
  font-size: 15px;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.about-team-link:hover {
  color: var(--white);
}

/* 05 西藏专属服务 */
.about-tibet {
  background: linear-gradient(135deg, var(--red), var(--dark-red));
  padding: 72px 0;
  color: var(--white);
}
.about-tibet-inner {
  max-width: 660px;
}
.about-tibet .about-section-index {
  color: var(--gold);
}
.about-tibet h2 {
  color: var(--white);
}
.about-tibet .about-section-lead {
  color: rgba(255, 255, 255, .88);
}
.about-tibet > .container > .about-tibet-inner p {
  color: rgba(255, 255, 255, .92);
  line-height: 1.8;
}
.about-tibet-feature {
  background: rgba(255, 255, 255, .1);
  border-left: 3px solid var(--gold);
  padding: 16px 18px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-top: 20px;
}
.about-tibet-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.about-tibet-main,
.about-tibet-ghost {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}
.about-tibet-main {
  background: var(--white);
  color: var(--red);
}
.about-tibet-main:hover {
  background: var(--light);
  transform: translateY(-2px);
}
.about-tibet-ghost {
  border: 1px solid rgba(255, 255, 255, .7);
  color: var(--white);
}
.about-tibet-ghost:hover {
  background: rgba(255, 255, 255, .12);
  border-color: var(--white);
}

/* 平板 */
@media (min-width: 600px) {
  .about-hero-facts {
    flex-direction: row;
    gap: 24px;
  }
  .about-timeline-item {
    margin-bottom: 28px;
  }
}

/* 桌面 */
@media (min-width: 960px) {
  .about-hero {
    padding: 40px 0 64px;
  }
  .about-hero-grid {
    grid-template-columns: 260px 1fr;
    gap: 48px;
    align-items: start;
  }
  .about-hero-main {
    order: 2;
  }
  .about-hero-side {
    order: 1;
    position: sticky;
    top: 88px;
  }
  .about-hero h1 {
    font-size: 48px;
  }
  .about-mission-grid {
    grid-template-columns: 1fr 420px;
    gap: 48px;
    align-items: center;
  }
  .about-cred-grid {
    grid-template-columns: 1.1fr 1fr;
    gap: 48px;
    align-items: center;
  }
  .about-team-layout {
    grid-template-columns: 1.15fr 1fr;
    margin-top: 32px;
  }
  .about-team-note {
    grid-column: 1 / -1;
  }
}