/* ===== 品牌概况 page-about ===== */
.page-about {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.75;
}

.page-about .about-hero {
  position: relative;
  padding: 44px 0 8px;
  background: linear-gradient(180deg, var(--cream) 0%, var(--mist) 100%);
  border-top: 3px solid var(--gold);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 0;
  width: 76px;
  height: 6px;
  background: var(--gold);
  z-index: 2;
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.page-about .about-hero-left {
  position: relative;
  z-index: 1;
}

.page-about .about-hero-title {
  font-family: var(--font-title);
  font-size: clamp(30px, 5.5vw, 56px);
  line-height: 1.18;
  margin: 0 0 22px;
  color: var(--primary-deep);
  letter-spacing: 0.02em;
  font-weight: 700;
}

.page-about .about-hero-lead {
  font-size: 16px;
  color: var(--ink);
  line-height: 1.9;
  max-width: 32em;
  border-left: 3px solid var(--gold);
  padding-left: 18px;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-about .about-hero-aside {
  border: 1px solid rgba(201, 162, 39, 0.5);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-card);
  padding: 22px 20px;
  position: relative;
  margin-bottom: 8px;
}

.page-about .about-hero-aside-title {
  font-family: var(--font-title);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--primary);
  margin: 0 0 18px;
  font-weight: 600;
}

.page-about .about-hero-aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--gold-soft);
}

.page-about .about-hero-aside-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 12px;
  padding: 10px 0 10px 16px;
  position: relative;
  border-bottom: 1px dotted var(--mist);
}

.page-about .about-hero-aside-item:last-child {
  border-bottom: none;
}

.page-about .about-hero-aside-item::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  border: 2px solid var(--white);
  box-shadow: 0 0 0 2px var(--gold);
}

.page-about .about-hero-aside-year {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--crimson);
  font-size: 14px;
}

.page-about .about-hero-aside-text {
  font-size: 14px;
  color: var(--ink);
}

.page-about .about-hero-aside-note {
  margin: 18px 0 0;
  font-size: 12px;
  color: var(--primary);
  letter-spacing: 0.06em;
  text-align: center;
}

.page-about .about-hero-art {
  margin-top: 40px;
}

.page-about .about-hero-art-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-float);
}

.page-about .about-mission {
  background: var(--primary);
  color: var(--white);
  padding: 60px 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-mission::before {
  content: "哨";
  position: absolute;
  right: -20px;
  top: -28px;
  font-family: var(--font-title);
  font-size: 150px;
  opacity: 0.06;
  color: var(--gold);
  z-index: 0;
}

.page-about .about-mission::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.page-about .about-mission-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  position: relative;
  z-index: 1;
}

.page-about .about-mission-note {
  align-self: start;
}

.page-about .about-mission-content {
  max-width: 48em;
}

.page-about .about-mission-title {
  font-family: var(--font-title);
  font-size: 28px;
  line-height: 1.4;
  margin: 0 0 18px;
  color: var(--white);
  font-weight: 600;
  position: relative;
  padding-bottom: 16px;
}

.page-about .about-mission-title::after {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  background: var(--gold);
  margin-top: 16px;
}

.page-about .about-mission-desc {
  font-size: 15px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.88);
  max-width: 42em;
  margin-bottom: 24px;
}

.page-about .about-mission-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  padding-top: 22px;
}

.page-about .about-mission-stat {
  padding: 4px 0;
}

.page-about .stat-num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.2;
  color: var(--gold);
  display: block;
  font-weight: 700;
}

.page-about .stat-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.74);
  margin-top: 4px;
  display: block;
}

.page-about .about-timeline {
  background: var(--white);
  padding: 64px 0;
}

.page-about .about-timeline-title {
  font-family: var(--font-title);
  font-size: 30px;
  line-height: 1.35;
  color: var(--primary-deep);
  margin: 0 0 12px;
}

.page-about .about-timeline-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-top: 36px;
}

.page-about .about-timeline-media {
  position: relative;
}

.page-about .about-timeline-media .media-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.page-about .about-timeline-media-caption {
  font-size: 12px;
  color: var(--primary);
  margin-top: 10px;
  letter-spacing: 0.05em;
}

.page-about .about-timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline-item {
  position: relative;
  padding: 0 0 0 48px;
  margin-bottom: 40px;
  border-left: 2px solid var(--mist);
  margin-left: 8px;
  transition: background 0.2s ease;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  outline: none;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gold);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--gold);
}

.page-about .about-timeline-item:hover,
.page-about .about-timeline-item:focus-within {
  background: var(--cream);
}

.page-about .about-timeline-year {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--crimson);
  font-size: 14px;
  display: inline-block;
  background: var(--cream);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  letter-spacing: 0.08em;
}

.page-about .about-timeline-item-title {
  font-family: var(--font-title);
  font-size: 19px;
  color: var(--primary-deep);
  margin: 8px 0 8px;
}

.page-about .about-timeline-item-desc {
  font-size: 14px;
  color: var(--ink);
  margin: 0 0 8px;
  line-height: 1.8;
}

.page-about .about-timeline-node-note {
  font-size: 12px;
  color: var(--crimson);
  background: var(--cream);
  border-radius: var(--radius-xs);
  padding: 6px 10px;
  font-weight: 500;
  max-height: none;
  opacity: 1;
  transition: max-height 0.3s ease, opacity 0.3s ease;
}

.page-about .about-data {
  background: var(--primary-deep);
  color: var(--white);
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-data::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 300px;
  height: 300px;
  border: 2px solid rgba(201, 162, 39, 0.2);
  border-radius: 50%;
}

.page-about .about-data-title {
  font-family: var(--font-title);
  font-size: 28px;
  line-height: 1.4;
  margin: 0 0 10px;
  color: var(--white);
}

.page-about .about-data-desc {
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  max-width: 38em;
  margin: 0;
  line-height: 1.8;
}

.page-about .about-data-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 36px;
}

.page-about .about-data-media .media-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-float);
}

.page-about .about-data-media-caption {
  font-size: 12px;
  color: var(--gold-soft);
  margin-top: 10px;
  letter-spacing: 0.04em;
}

.page-about .about-data .tabs {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 20px;
}

.page-about .about-data .tabs-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.page-about .about-data .tabs-tab {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-family: var(--font-body);
  cursor: pointer;
}

.page-about .about-data .tabs-tab[aria-selected="true"] {
  background: var(--gold);
  color: var(--primary-deep);
  border-color: var(--gold);
  font-weight: 600;
}

.page-about .about-data .tabs-panel {
  border-top: 2px solid var(--gold);
  padding-top: 18px;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.92);
}

.page-about .about-data .tabs-panel p {
  margin: 0;
}

.page-about .about-team {
  background: var(--cream);
  padding: 64px 0;
}

.page-about .about-team-title {
  font-family: var(--font-title);
  font-size: 30px;
  line-height: 1.35;
  margin: 0 0 12px;
  color: var(--primary-deep);
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 36px;
}

.page-about .about-team-card {
  border-top: 3px solid var(--gold);
  box-shadow: var(--shadow-card);
}

.page-about .about-team-card-title {
  font-family: var(--font-title);
  font-size: 18px;
  color: var(--primary);
  margin: 0 0 10px;
  font-weight: 600;
}

.page-about .about-team-card-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink);
  margin: 0;
}

.page-about .about-commitment {
  background: var(--white);
  padding: 64px 0;
}

.page-about .about-commitment-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}

.page-about .about-commitment-trust .callout {
  margin-bottom: 16px;
}

.page-about .about-commitment-meta {
  font-size: 13px;
  color: var(--primary);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  letter-spacing: 0.04em;
}

.page-about .about-commitment-meta p {
  margin: 0;
}

.page-about .about-commitment-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 64px 0 20px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1.5fr 0.9fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-hero-title {
    font-size: 52px;
  }

  .page-about .about-hero-lead {
    font-size: 17px;
  }

  .page-about .about-hero-art {
    margin-top: 48px;
  }

  .page-about .about-mission {
    padding: 72px 0;
  }

  .page-about .about-mission-grid {
    grid-template-columns: 0.4fr 1.6fr;
    gap: 56px;
  }

  .page-about .about-mission-title {
    font-size: 34px;
  }

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

  .page-about .about-timeline-grid {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
    gap: 48px;
  }

  .page-about .about-timeline-item {
    padding-left: 40px;
  }

  .page-about .about-timeline-node-note {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    padding: 0;
  }

  .page-about .about-timeline-item:hover .about-timeline-node-note,
  .page-about .about-timeline-item:focus-within .about-timeline-node-note {
    max-height: 6em;
    opacity: 1;
    padding: 6px 10px;
    margin-top: 8px;
  }

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

  .page-about .about-data-grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .about-data-title {
    font-size: 34px;
  }

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

  .page-about .about-team-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .about-commitment {
    padding: 72px 0;
  }

  .page-about .about-commitment-inner {
    grid-template-columns: 1.6fr 1fr;
    gap: 40px;
  }
}