/* ===== 页面专属：品牌档案 ===== */
.page-about {
  --about-chapter-size: 64px;
  --about-gold-soft: rgba(212, 160, 23, 0.35);
  background: var(--cream);
  scroll-behavior: smooth;
}

/* hero */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--meadow);
  color: var(--cream);
  padding: 24px 0 56px;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -160px;
  right: -70px;
  width: 360px;
  height: 360px;
  background: var(--crimson);
  transform: rotate(24deg);
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  bottom: -180px;
  left: -90px;
  width: 300px;
  height: 300px;
  border: 3px solid var(--about-gold-soft);
  transform: rotate(18deg);
}
.page-about .about-hero .container--wide {
  position: relative;
  z-index: 1;
}
.page-about .about-hero .breadcrumb-link {
  color: rgba(245, 243, 233, 0.78);
}
.page-about .about-hero .breadcrumb-link:hover {
  color: #fff;
}
.page-about .about-hero .eyebrow {
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin: 0 0 10px;
}
.page-about .about-hero-grid {
  display: grid;
  gap: 28px;
  align-items: center;
  padding-top: 28px;
}
.page-about .about-hero-title {
  font-size: clamp(40px, 10vw, 64px);
  line-height: 1.05;
  margin: 0;
  color: #fff;
  letter-spacing: 0.01em;
  font-weight: 900;
}
.page-about .about-hero-subtitle {
  margin: 10px 0 0;
  font-size: 20px;
  font-weight: 700;
  color: rgba(245, 243, 233, 0.85);
  letter-spacing: 0.02em;
}
.page-about .about-hero-intro {
  margin: 18px 0 0;
  max-width: 640px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(245, 243, 233, 0.9);
}
.page-about .about-hero .btn-row {
  margin-top: 24px;
}
.page-about .about-hero .btn-ghost {
  border-color: rgba(245, 243, 233, 0.8);
  color: var(--cream);
}
.page-about .about-hero .btn-ghost:hover {
  background: rgba(245, 243, 233, 0.1);
  border-color: #fff;
  color: #fff;
}

/* seal */
.page-about .about-hero-seal {
  display: flex;
  justify-content: center;
  align-items: center;
}
.page-about .seal-diamond {
  position: relative;
  width: 180px;
  height: 180px;
  border: 3px solid var(--gold);
  background: rgba(11, 27, 42, 0.18);
  transform: rotate(45deg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.page-about .seal-diamond::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid var(--about-gold-soft);
}
.page-about .seal-year {
  transform: rotate(-45deg);
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 900;
  font-size: 42px;
  color: var(--gold);
  line-height: 1;
}
.page-about .seal-label {
  transform: rotate(-45deg);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: rgba(245, 243, 233, 0.75);
  margin-top: 6px;
}

/* chapter index */
.page-about .chapter-index {
  background: var(--cream);
  border-bottom: 1px solid var(--edge);
}
.page-about .chapter-index-list {
  display: flex;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 14px 0;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-about .chapter-index-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--edge);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.page-about .chapter-index-list a:hover {
  border-color: var(--crimson);
  background: var(--crimson);
  color: #fff;
}
.page-about .chapter-index-list .index-num {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 900;
  color: var(--gold);
}
.page-about .chapter-index-list a:hover .index-num {
  color: #fff;
}

/* section heading */
.page-about .section-heading-row {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 24px;
}
.page-about .chapter-num {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 900;
  font-size: var(--about-chapter-size);
  line-height: 0.9;
  letter-spacing: -0.06em;
  color: transparent;
  -webkit-text-stroke: 1px var(--gold);
  -moz-text-stroke: 1px var(--gold);
  white-space: nowrap;
  min-width: 0.9em;
}
.page-about .chapter-num--light {
  -webkit-text-stroke: 1px rgba(212, 160, 23, 0.7);
}
.page-about .chapter-num--night {
  -webkit-text-stroke: 1px rgba(212, 160, 23, 0.85);
}
.page-about .chapter-heading .section-kicker {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--crimson);
}
.page-about .chapter-heading .section-title {
  margin: 0;
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 900;
  line-height: 1.2;
  color: var(--ink);
}
.page-about .section-intro {
  max-width: 760px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(26, 26, 26, 0.78);
}

/* brand story */
.page-about .brand-story-section {
  position: relative;
  background-color: var(--cream);
  background-image: repeating-linear-gradient(45deg, rgba(30, 122, 78, 0.035) 0 1px, transparent 1px 20px);
}
.page-about .story-grid {
  display: grid;
  gap: 32px;
  align-items: center;
}
.page-about .story-copy {
  font-size: 16px;
}
.page-about .story-lead {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--ink);
  margin: 0 0 12px;
}
.page-about .story-copy > p {
  line-height: 1.8;
  color: rgba(26, 26, 26, 0.82);
}
.page-about .story-points {
  margin-top: 28px;
  display: grid;
  gap: 0;
}
.page-about .story-point {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--edge);
}
.page-about .story-point:last-child {
  border-bottom: 1px solid var(--edge);
}
.page-about .point-mark {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 900;
  font-size: 22px;
  color: var(--crimson);
  line-height: 1.1;
  min-width: 34px;
}
.page-about .story-point h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 900;
  color: var(--ink);
}
.page-about .story-point p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(26, 26, 26, 0.78);
}
.page-about .story-media {
  margin: 0;
}
.page-about .story-media .media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--edge);
  box-shadow: var(--shadow-lift);
}
.page-about .story-media .media-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-about .story-media figcaption,
.page-about .timeline-banner figcaption {
  font-size: 13px;
  color: var(--data-blue);
  margin-top: 12px;
  padding-left: 12px;
  border-left: 3px solid var(--gold);
}

/* milestone */
.page-about .milestone-section {
  background-color: var(--meadow);
  background-image: repeating-linear-gradient(-45deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 22px);
  color: var(--cream);
}
.page-about .milestone-section .section-kicker {
  color: var(--gold);
}
.page-about .milestone-section .section-title {
  color: #fff;
}
.page-about .milestone-section .section-intro {
  color: rgba(245, 243, 233, 0.92);
}
.page-about .timeline-scroll {
  margin-top: 28px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 8px;
}
.page-about .timeline-track {
  display: flex;
  gap: 16px;
  min-width: max-content;
}
.page-about .timeline-item {
  position: relative;
  width: 280px;
  scroll-snap-align: start;
  padding-top: 28px;
}
.page-about .timeline-item::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 12px;
  right: -16px;
  height: 2px;
  background: rgba(212, 160, 23, 0.38);
}
.page-about .timeline-item:last-child::before {
  display: none;
}
.page-about .timeline-dot {
  position: absolute;
  top: 0;
  left: 12px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gold);
  border: 3px solid var(--meadow);
  box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.7);
  z-index: 1;
}
.page-about .timeline-card {
  background: rgba(11, 27, 42, 0.7);
  border: 1px solid rgba(212, 160, 23, 0.2);
  padding: 18px 20px;
  border-radius: 2px;
  color: var(--cream);
  box-shadow: var(--shadow-soft);
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}
.page-about .timeline-item:hover .timeline-card {
  transform: translateY(-4px);
  border-color: var(--gold);
  background: rgba(11, 27, 42, 0.85);
}
.page-about .timeline-card h3 {
  margin: 10px 0 6px;
  font-size: 18px;
  color: #fff;
  font-weight: 900;
}
.page-about .timeline-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(245, 243, 233, 0.8);
}
.page-about .timeline-banner {
  margin: 30px 0 0;
}
.page-about .timeline-banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 2px;
  box-shadow: 0 12px 30px rgba(11, 27, 42, 0.24);
}

/* credentials */
.page-about .credential-section {
  background: var(--cream);
}
.page-about .credential-layout {
  display: grid;
  gap: 28px;
}
.page-about .credential-badge {
  margin: 0;
  text-align: center;
}
.page-about .credential-badge .media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  background: var(--edge);
  border: 2px solid var(--gold);
  box-shadow: var(--shadow-lift);
}
.page-about .credential-badge .media-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-about .badge-caption {
  margin-top: 16px;
  font-size: 14px;
  color: var(--data-blue);
  line-height: 1.6;
}
.page-about .credential-grid {
  display: grid;
  gap: 16px;
}
.page-about .credential-card {
  background: #fff;
  border: 1px solid var(--edge);
  padding: 24px;
  box-shadow: var(--shadow-soft);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.page-about .credential-card:hover {
  border-color: var(--meadow);
  box-shadow: var(--shadow-lift);
  transform: translateY(-3px);
}
.page-about .credential-card h3 {
  margin: 14px 0 8px;
  font-size: 18px;
  font-weight: 900;
  color: var(--ink);
  line-height: 1.35;
}
.page-about .credential-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(26, 26, 26, 0.78);
}

/* team */
.page-about .team-section {
  background: var(--night);
  color: var(--cream);
}
.page-about .team-section .section-kicker {
  color: var(--gold);
}
.page-about .team-section .section-title {
  color: #fff;
}
.page-about .team-layout {
  display: grid;
  gap: 36px;
}
.page-about .team-copy {
  max-width: 560px;
}
.page-about .team-lead {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 900;
  line-height: 1.4;
  color: #fff;
}
.page-about .team-copy p {
  line-height: 1.8;
  color: rgba(245, 243, 233, 0.85);
}
.page-about .team-copy .btn-row {
  margin-top: 24px;
}
.page-about .team-section .btn-ghost {
  border-color: rgba(212, 160, 23, 0.6);
  color: var(--cream);
}
.page-about .team-section .btn-ghost:hover {
  background: rgba(212, 160, 23, 0.08);
  border-color: var(--gold);
  color: var(--gold);
}
.page-about .team-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-about .stat-card {
  position: relative;
  background: rgba(245, 243, 233, 0.05);
  border: 1px solid rgba(212, 160, 23, 0.28);
  padding: 22px 18px;
  overflow: hidden;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.page-about .stat-card:hover {
  background: rgba(245, 243, 233, 0.09);
  border-color: rgba(212, 160, 23, 0.55);
}
.page-about .stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--crimson);
}
.page-about .stat-num {
  display: block;
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(28px, 5vw, 38px);
  line-height: 1.05;
  color: var(--gold);
}
.page-about .stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(245, 243, 233, 0.72);
}

/* reveal */
.page-about [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* responsive */
@media (min-width: 480px) {
  .page-about .team-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1fr) 240px;
  }
  .page-about .story-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }
  .page-about .credential-layout {
    grid-template-columns: 260px minmax(0, 1fr);
  }
  .page-about .credential-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .team-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1fr) 300px;
  }
  .page-about .timeline-track {
    gap: 24px;
  }
  .page-about .timeline-item {
    width: 320px;
  }
}