/* ===== 品牌档案页专属样式 ===== */
.page-about {
  --about-num-stroke: rgba(212, 175, 55, 0.85);
  --about-line-dim: rgba(212, 175, 55, 0.2);
  --about-card-deep: #0d3528;
  position: relative;
  background: var(--bg-main);
}

/* ---------- 面包屑 ---------- */
.page-about .about-hero-nav {
  position: relative;
  z-index: 2;
  padding-top: 20px;
}
.page-about .about-breadcrumb {
  margin: 0;
  font-size: 13px;
  letter-spacing: .04em;
}
.page-about .about-breadcrumb a {
  color: rgba(245, 245, 245, 0.78);
  text-decoration: none;
  transition: color .2s ease;
}
.page-about .about-breadcrumb a:hover {
  color: var(--accent-gold);
}
.page-about .about-breadcrumb .sep {
  color: var(--accent-gold);
  margin: 0 9px;
  opacity: .85;
}
.page-about .about-breadcrumb [aria-current="page"] {
  color: var(--text-main);
  font-weight: 600;
}

/* ---------- 01 品牌故事 Hero ---------- */
.page-about .about-hero {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 460px;
  isolation: isolate;
  overflow: hidden;
}
.page-about .about-hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), 0 100%);
  overflow: hidden;
  background: var(--bg-gradient);
}
.page-about .about-hero-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.82) contrast(1.08);
}
.page-about .about-hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(112deg, rgba(11, 61, 46, .94) 0%, rgba(11, 61, 46, .5) 50%, rgba(139, 0, 0, .28) 100%),
    linear-gradient(0deg, rgba(0, 0, 0, .66) 0%, rgba(0, 0, 0, .08) 58%);
}
.page-about .about-hero-body {
  position: relative;
  z-index: 1;
  padding: 32px 0 64px;
  max-width: 820px;
}
.page-about .about-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--accent-gold);
  text-transform: uppercase;
}
.page-about .about-kicker .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, .18);
  flex: 0 0 auto;
}
.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(2rem, 6vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: .01em;
  color: var(--text-main);
}
.page-about .about-title-sub {
  display: block;
  margin-top: 12px;
  font-size: clamp(1rem, 2.4vw, 1.6rem);
  line-height: 1.3;
  color: var(--accent-gold);
  letter-spacing: .06em;
}
.page-about .about-lead {
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(245, 245, 245, .86);
  max-width: 600px;
}
.page-about .about-hero-facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 16px 44px;
  margin: 30px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--border-gold);
}
.page-about .about-hero-facts li {
  font-size: 13px;
  color: rgba(245, 245, 245, .72);
}
.page-about .about-hero-facts strong {
  font-family: var(--font-title);
  font-size: 1.5em;
  font-weight: 400;
  color: var(--text-main);
  margin-right: 3px;
}
.page-about .about-hero-index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 26px;
}
.page-about .about-hero-index a {
  position: relative;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 2px;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.page-about .about-hero-index a::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 50%;
  width: 5px;
  height: 5px;
  background: var(--accent-red);
  transform: translateY(-50%);
}
.page-about .about-hero-index a:hover {
  color: var(--accent-gold);
  border-bottom-color: var(--accent-gold);
}
.page-about .about-hero-index a:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 4px;
}

/* ---------- 章节编号 ---------- */
.page-about .about-blocknum {
  display: block;
  font-family: var(--font-title);
  font-size: clamp(3.6rem, 12vw, 5.6rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--about-num-stroke);
  opacity: .55;
  user-select: none;
}

/* ---------- 02 数据能力 ---------- */
.page-about .about-data {
  position: relative;
  z-index: 2;
  margin-top: -44px;
  padding: 64px 0 56px;
  background: linear-gradient(160deg, var(--bg-main) 6%, var(--about-card-deep) 52%, var(--card-bg) 100%);
}
.page-about .about-data::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 38%;
  max-width: 420px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-red), var(--accent-gold));
}
.page-about .about-data-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
}
.page-about .about-data-side {
  position: relative;
}
.page-about .about-section-title {
  margin: 18px 0 0;
  font-family: var(--font-title);
  font-size: clamp(1.6rem, 4.6vw, 2.4rem);
  line-height: 1.12;
  letter-spacing: .02em;
  color: var(--text-main);
}
.page-about .about-section-note {
  margin: 18px 0 0;
  max-width: 620px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-secondary);
}
.page-about .about-data-link {
  display: inline-block;
  margin-top: 26px;
  padding: 12px 26px;
  font-size: 13px;
  letter-spacing: .08em;
  transition: border-color .2s ease, color .2s ease, transform .2s ease;
}
.page-about .about-data-link:hover {
  transform: translateX(5px);
}
.page-about .about-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-about .about-stat {
  position: relative;
  padding: 22px 18px 18px;
  background: linear-gradient(150deg, rgba(16, 47, 36, .92), rgba(11, 61, 46, .28));
  border: 1px solid var(--border-gold);
  transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.page-about .about-stat::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -1px;
  width: 16px;
  height: 16px;
  border-top: 2px solid var(--accent-gold);
  border-right: 2px solid var(--accent-gold);
}
.page-about .about-stat:hover,
.page-about .about-stat:focus-within {
  border-color: var(--accent-gold);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, .3);
}
.page-about .about-stat:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}
.page-about .about-stat-num {
  display: block;
  font-family: var(--font-title);
  font-size: clamp(2.3rem, 6vw, 3.4rem);
  line-height: 1;
  color: var(--text-main);
  letter-spacing: .01em;
}
.page-about .about-stat-plus {
  color: var(--accent-gold);
  font-size: .52em;
  vertical-align: top;
  margin-left: 2px;
}
.page-about .about-stat-label {
  display: block;
  margin-top: 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--accent-gold);
}
.page-about .about-stat-detail {
  display: block;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--about-line-dim);
  font-size: 12px;
  line-height: 1.75;
  color: var(--text-secondary);
}
.page-about .about-data-figure {
  margin: 30px 0 0;
  position: relative;
  padding: 0 0 16px;
  border-left: 3px solid var(--accent-gold);
  background: var(--card-bg);
}
.page-about .about-data-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 8 / 5;
  filter: saturate(.9) contrast(1.04);
}
.page-about .about-data-figure figcaption {
  padding: 14px 16px 0;
  font-size: 12px;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* ---------- 03 发展里程碑 ---------- */
.page-about .about-milestones {
  position: relative;
  padding: 64px 0 72px;
  border-top: 1px solid var(--border-gold);
  background:
    repeating-linear-gradient(-45deg, rgba(212, 175, 55, .032) 0 2px, transparent 2px 12px),
    linear-gradient(135deg, rgba(139, 0, 0, .2) 0%, rgba(139, 0, 0, 0) 44%),
    linear-gradient(180deg, var(--bg-main) 0%, var(--about-card-deep) 100%);
}
.page-about .about-milestones::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-red) 0%, var(--accent-gold) 46%, rgba(212, 175, 55, .08) 100%);
}
.page-about .about-milestones-head {
  max-width: 720px;
}
.page-about .about-timeline {
  list-style: none;
  margin: 44px 0 0;
  padding: 0;
  max-width: 860px;
  position: relative;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-gold), rgba(212, 175, 55, .12));
}
.page-about .about-timeline-item {
  position: relative;
  padding: 0 0 8px 36px;
}
.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-main);
  border: 3px solid var(--accent-gold);
  box-shadow: 0 0 0 5px rgba(212, 175, 55, .13);
  transition: box-shadow .25s ease, transform .25s ease;
}
.page-about .about-timeline-item:hover::before {
  box-shadow: 0 0 0 8px rgba(212, 175, 55, .2);
  transform: scale(1.08);
}
.page-about .about-timeline-details summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  -webkit-user-select: none;
  user-select: none;
}
.page-about .about-timeline-details summary::-webkit-details-marker {
  display: none;
}
.page-about .about-timeline-details summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-body);
  font-size: 22px;
  line-height: 1;
  color: var(--accent-gold);
  transition: transform .25s ease;
}
.page-about .about-timeline-details[open] summary::after {
  transform: rotate(45deg);
}
.page-about .about-timeline-details summary:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 4px;
}
.page-about .about-year {
  display: inline-flex;
  align-items: baseline;
  justify-content: center;
  min-width: 74px;
  padding: 5px 12px;
  font-family: var(--font-title);
  font-size: 17px;
  letter-spacing: .05em;
  color: var(--accent-gold);
  border: 1px solid var(--border-gold);
  background: rgba(212, 175, 55, .06);
}
.page-about .about-event-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}
.page-about .about-event-body {
  margin: 12px 0 18px;
  padding: 10px 0 0 16px;
  border-left: 2px solid rgba(212, 175, 55, .25);
  font-size: 13px;
  line-height: 1.9;
  color: var(--text-secondary);
}

/* ---------- 04 荣誉与认证 ---------- */
.page-about .about-honors {
  position: relative;
  padding: 64px 0 56px;
  border-top: 1px solid var(--border-gold);
  background:
    radial-gradient(circle at 12% 18%, rgba(212, 175, 55, .08), transparent 42%),
    var(--bg-main);
}
.page-about .about-honors-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
.page-about .about-honors-media {
  position: relative;
  max-width: 340px;
  margin: 0 auto;
}
.page-about .about-honors-media::before {
  content: "";
  position: absolute;
  inset: 20px -20px -20px 20px;
  border: 1px solid var(--border-gold);
  z-index: 0;
}
.page-about .about-honors-media::after {
  content: "";
  position: absolute;
  top: 0;
  right: 16px;
  width: 40px;
  height: 40px;
  border-top: 3px solid var(--accent-red);
  border-right: 3px solid var(--accent-red);
  z-index: 2;
}
.page-about .about-honors-media img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  filter: saturate(.85) contrast(1.06);
}
.page-about .about-honors-copy {
  min-width: 0;
}
.page-about .about-honor-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-about .about-honor-item {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--card-bg);
  border: 1px solid rgba(212, 175, 55, .32);
  border-left: 3px solid var(--accent-gold);
  transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.page-about .about-honor-item:hover,
.page-about .about-honor-item:focus-within {
  border-color: var(--accent-gold);
  transform: translateY(-3px);
  box-shadow: 0 12px 26px rgba(0, 0, 0, .28);
}
.page-about .about-honor-item .tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--accent-gold);
  border: 1px solid var(--border-gold);
  background: rgba(212, 175, 55, .06);
}
.page-about .about-honor-item h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text-main);
}
.page-about .about-honor-item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--text-secondary);
}
.page-about .about-honors-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.page-about .about-honors-actions .btn-red,
.page-about .about-honors-actions .btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 13px;
  letter-spacing: .08em;
  transition: border-color .2s ease, background-color .2s ease, color .2s ease, transform .2s ease;
}
.page-about .about-honors-actions .btn-red:hover,
.page-about .about-honors-actions .btn-outline:hover {
  transform: translateY(-2px);
}

/* ---------- 收尾 CTA ---------- */
.page-about .about-closing {
  position: relative;
  margin-top: 8px;
  padding: 56px 0 80px;
  text-align: center;
  border-top: 1px solid rgba(212, 175, 55, .2);
  background:
    linear-gradient(180deg, rgba(139, 0, 0, .16) 0%, rgba(11, 61, 46, 0) 70%),
    var(--bg-main);
}
.page-about .about-closing::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 3px;
  background: var(--accent-gold);
}
.page-about .about-closing h2 {
  margin: 0 auto;
  max-width: 640px;
  font-family: var(--font-title);
  font-size: clamp(1.4rem, 3.6vw, 2.1rem);
  line-height: 1.35;
  color: var(--text-main);
}
.page-about .about-closing p {
  margin: 16px auto 0;
  max-width: 560px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-secondary);
}
.page-about .about-closing-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 16px;
  margin-top: 28px;
}
.page-about .about-closing-links .btn,
.page-about .about-closing-links .btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  font-size: 13px;
  letter-spacing: .08em;
}

/* ---------- 锚点滚动偏移 ---------- */
.page-about [id="data-capability"],
.page-about [id="milestones"],
.page-about [id="honors"] {
  scroll-margin-top: 96px;
}

/* ---------- 响应式增强 ---------- */
@media (min-width: 560px) {
  .page-about .about-stats {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .about-honor-list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 640px) {
  .page-about .about-hero {
    min-height: 520px;
  }
  .page-about .about-hero-body {
    padding-bottom: 76px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    min-height: 640px;
  }
  .page-about .about-hero-body {
    padding: 48px 0 88px;
  }
  .page-about .about-data {
    padding: 96px 0 88px;
  }
  .page-about .about-milestones {
    padding: 96px 0 104px;
  }
  .page-about .about-honors {
    padding: 96px 0 80px;
  }
  .page-about .about-closing {
    padding: 72px 0 104px;
  }
}

@media (min-width: 992px) {
  .page-about .about-data-grid {
    grid-template-columns: minmax(280px, 360px) 1fr;
    gap: 72px;
    align-items: start;
  }
  .page-about .about-data-figure {
    margin-left: -56px;
    width: calc(100% + 56px);
  }
  .page-about .about-honors-grid {
    grid-template-columns: minmax(280px, 360px) 1fr;
    gap: 72px;
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-about .about-honor-list {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .page-about .about-stat {
    min-height: 150px;
  }
  .page-about .about-stat-detail {
    position: absolute;
    left: 10px;
    right: 10px;
    bottom: 10px;
    margin: 0;
    border: 1px solid var(--border-gold);
    background: rgba(11, 61, 46, .96);
    padding: 10px 12px;
    border-radius: 2px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity .25s ease, transform .25s ease;
    pointer-events: none;
  }
  .page-about .about-stat:hover .about-stat-detail,
  .page-about .about-stat:focus-within .about-stat-detail {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 1200px) {
  .page-about .about-data-side {
    margin-top: 24px;
  }
}