/* ============ 品牌档案 / page-about ============ */
.page-about {
  --ab-cut: 18px;
  --ab-cut-sm: 12px;
  --ab-rail: 132px;
  --ab-hair: rgba(36, 64, 95, 0.85);
  --ab-card: linear-gradient(180deg, rgba(18, 39, 63, 0.96), rgba(14, 32, 54, 0.9));
  --ab-card-hover: linear-gradient(180deg, rgba(26, 50, 78, 0.98), rgba(18, 39, 63, 0.94));
  padding-bottom: clamp(48px, 8vw, 104px);
}

.page-about .breadcrumb {
  margin-top: clamp(14px, 3vw, 26px);
  margin-bottom: clamp(14px, 3vw, 26px);
}
.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gray-200);
}
.page-about .breadcrumb__link {
  color: var(--gray-200);
  text-decoration: none;
}
.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  color: var(--gold-400);
}
.page-about .breadcrumb__link[aria-current="page"] {
  color: var(--paper-100);
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  padding-bottom: clamp(32px, 6vw, 60px);
}

.page-about .about-frame {
  position: relative;
  padding: clamp(34px, 5.4vw, 66px) clamp(20px, 4vw, 56px) clamp(28px, 4.4vw, 52px);
  background:
    radial-gradient(120% 150% at 88% 4%, rgba(214, 169, 76, 0.14), transparent 56%),
    radial-gradient(90% 120% at 4% 96%, rgba(47, 143, 121, 0.12), transparent 60%),
    linear-gradient(180deg, rgba(18, 39, 63, 0.97), rgba(10, 26, 46, 0.94));
  border: 1px solid var(--ink-500);
  clip-path: polygon(
    var(--ab-cut) 0,
    100% 0,
    100% calc(100% - var(--ab-cut)),
    calc(100% - var(--ab-cut)) 100%,
    0 100%,
    0 var(--ab-cut)
  );
  overflow: hidden;
}
.page-about .about-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(168, 176, 184, 0.16) 0 1px,
    transparent 1px 40px
  );
  background-size: 100% 12px;
  background-repeat: no-repeat;
  opacity: 0.7;
  pointer-events: none;
}
.page-about .about-frame::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 220px;
  border: 1px solid rgba(214, 169, 76, 0.34);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-about .about-frame .frame__label {
  position: absolute;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gray-200);
  padding: 4px 8px;
  background: rgba(10, 26, 46, 0.86);
  border: 1px solid var(--ink-500);
}
.page-about .about-frame .frame__label--tl { top: 10px; left: 10px; }
.page-about .about-frame .frame__label--tr { top: 10px; right: 10px; }
.page-about .about-frame .frame__label--bl { bottom: 10px; left: 10px; }
.page-about .about-frame .frame__label--br { bottom: 10px; right: 10px; }

.page-about .about-frame__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
  max-width: 74ch;
  padding-top: clamp(12px, 2vw, 20px);
  padding-bottom: clamp(8px, 1.6vw, 16px);
}

.page-about .kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-400);
}

.page-about h1 {
  margin: 0;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  font-weight: 700;
  color: var(--paper-100);
  max-width: 22ch;
}

.page-about .about-frame__lede {
  margin: 0;
  font-size: clamp(15px, 1.1vw + 13px, 16px);
  line-height: 2;
  color: var(--text-soft);
  max-width: 62ch;
}

.page-about .about-stats {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: rgba(10, 26, 46, 0.72);
  border: 1px solid var(--ink-500);
  border-left: 2px solid var(--gray-400);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut-sm)), calc(100% - var(--ab-cut-sm)) 100%, 0 100%);
}
.page-about .about-stat.stat--gold { border-left-color: var(--gold-400); }
.page-about .about-stat.stat--jade { border-left-color: var(--jade-300); }
.page-about .about-stat.stat--cinnabar { border-left-color: var(--cinnabar-300); }

.page-about .about-stat .stat__label {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gray-200);
  text-transform: uppercase;
}
.page-about .about-stat .stat__value {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--paper-100);
  line-height: 1.1;
}
.page-about .about-stat.stat--gold .stat__value { color: var(--gold-400); }
.page-about .about-stat.stat--jade .stat__value { color: var(--jade-300); }
.page-about .about-stat.stat--cinnabar .stat__value { color: var(--cinnabar-300); }
.page-about .about-stat .stat__unit {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-200);
  letter-spacing: 0;
}
.page-about .about-stat .stat__hint {
  font-size: 12px;
  line-height: 1.7;
  color: var(--gray-200);
}

.page-about .about-frame__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ---------- 通用章节节奏 ---------- */
.page-about .section {
  padding-block: clamp(40px, 6.6vw, 84px);
}

.page-about .index-line {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.page-about .index-line__num {
  font-size: clamp(22px, 3.4vw, 34px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--clay-500);
  text-decoration: none;
  line-height: 1;
  border-radius: 2px;
}
.page-about .index-line__num:hover,
.page-about .index-line__num:focus-visible {
  color: var(--gold-400);
  outline: 2px solid var(--gold-400);
  outline-offset: 4px;
}
.page-about .index-line__rule {
  flex: 1 1 auto;
  height: 1px;
  min-width: 24px;
  background: linear-gradient(90deg, var(--ab-hair), transparent);
}
.page-about .index-line__label {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-200);
  white-space: nowrap;
}

.page-about .section__head {
  max-width: 68ch;
  margin-bottom: clamp(24px, 3.6vw, 40px);
}
.page-about .section__title {
  margin: 0 0 14px;
  font-size: clamp(22px, 2.2vw + 14px, 34px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper-100);
}
.page-about .section__lede {
  margin: 0;
  font-size: 15px;
  line-height: 2;
  color: var(--text-soft);
}

/* ---------- 图片通用 ---------- */
.page-about .about-figure {
  margin: 0;
}
.page-about .about-figure--band {
  margin-bottom: clamp(26px, 4vw, 48px);
  border: 1px solid var(--ink-500);
  background: var(--ink-800);
  clip-path: polygon(0 var(--ab-cut), var(--ab-cut) 0, 100% 0, 100% calc(100% - var(--ab-cut)), calc(100% - var(--ab-cut)) 100%, 0 100%);
  overflow: hidden;
}
.page-about .about-figure .media__inner {
  overflow: hidden;
  background:
    repeating-linear-gradient(180deg, rgba(36, 64, 95, 0.5) 0 1px, transparent 1px 18px),
    var(--ink-800);
}
.page-about .about-figure .media__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .about-figure .media__caption {
  display: block;
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--gray-200);
  border-top: 1px solid var(--ink-500);
}
.page-about .about-figure--band .media__caption {
  border-top: none;
  padding: 8px 2px 0;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
  position: relative;
}
.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(
    180deg,
    var(--gold-400) 0,
    var(--ink-500) 14%,
    var(--ink-500) 84%,
    rgba(36, 64, 95, 0) 100%
  );
}

.page-about .timeline__item {
  position: relative;
  display: grid;
  gap: 10px;
  padding-bottom: clamp(20px, 3vw, 32px);
  outline: none;
}
.page-about .timeline__item:last-child {
  padding-bottom: 0;
}
.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: 11px;
  height: 11px;
  background: var(--ink-900);
  border: 1px solid var(--gold-400);
  transform: rotate(45deg);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .timeline__item:hover::before,
.page-about .timeline__item:focus-within::before,
.page-about .timeline__item:focus-visible::before {
  background: var(--gold-400);
}
.page-about .timeline__item:focus-visible {
  box-shadow: 0 0 0 2px var(--gold-400);
  border-radius: 2px;
}

.page-about .timeline__year {
  font-size: 20px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  color: var(--gold-400);
}

.page-about .timeline__card {
  position: relative;
  padding: 18px 18px 16px;
  background: var(--ab-card);
  border: 1px solid var(--ink-500);
  border-top: 1px solid rgba(214, 169, 76, 0.42);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut-sm)), calc(100% - var(--ab-cut-sm)) 100%, 0 100%);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .timeline__card:hover,
.page-about .timeline__item:focus-within .timeline__card {
  transform: translateY(-2px);
  background: var(--ab-card-hover);
  border-color: var(--ink-500);
  box-shadow: inset 0 2px 0 0 rgba(214, 169, 76, 0.5);
}

.page-about .timeline__card .panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.page-about .timeline__card .panel__title {
  margin: 0;
  font-size: 17px;
  line-height: 1.45;
  color: var(--paper-100);
}
.page-about .timeline__card .panel__body {
  margin: 0;
  font-size: 14px;
  line-height: 1.95;
  color: var(--text-soft);
}
.page-about .timeline__note {
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--jade-300);
  border-left: 2px solid rgba(87, 180, 155, 0.5);
  padding-left: 0;
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease), margin-top var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.page-about .timeline__item:hover .timeline__note,
.page-about .timeline__item:focus-within .timeline__note {
  max-height: 160px;
  opacity: 1;
  margin-top: 10px;
  padding-left: 10px;
}
.page-about .timeline__card .panel__meta {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--ab-hair);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-400);
}

/* ---------- 栏目体系 ---------- */
.page-about .about-split {
  display: grid;
  gap: clamp(20px, 3.6vw, 36px);
}
.page-about .about-split__aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .column-map {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .column-node {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 16px 18px 14px;
  text-decoration: none;
  background: var(--ab-card);
  border: 1px solid var(--ink-500);
  border-left: 3px solid var(--gray-400);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut-sm)), calc(100% - var(--ab-cut-sm)) 100%, 0 100%);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.page-about .column-node:hover,
.page-about .column-node:focus-visible,
.page-about .column-node.is-linked {
  transform: translateY(-2px);
  background: var(--ab-card-hover);
  border-color: var(--gold-400);
  border-left-color: var(--gold-400);
  box-shadow: inset 0 2px 0 0 rgba(214, 169, 76, 0.4);
}
.page-about .column-node:focus-visible {
  outline: 2px solid var(--gold-400);
  outline-offset: 3px;
}

.page-about .column-node--check { border-left-color: var(--cinnabar-300); }
.page-about .column-node--trend { border-left-color: var(--jade-300); }
.page-about .column-node--prize { border-left-color: var(--cinnabar-500); }
.page-about .column-node--find { border-left-color: var(--gold-400); }
.page-about .column-node--news { border-left-color: var(--clay-500); }
.page-about .column-node--help { border-left-color: var(--moss-400); }

.page-about .column-node__idx {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gray-400);
}
.page-about .column-node__name {
  font-size: 16px;
  font-weight: 600;
  color: var(--paper-100);
  letter-spacing: 0.01em;
}
.page-about .column-node__desc {
  font-size: 13px;
  line-height: 1.85;
  color: var(--gray-200);
}
.page-about .column-node__go {
  margin-top: 4px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold-400);
}
.page-about .column-node__go::after {
  content: " →";
}

/* ---------- 流程步骤 ---------- */
.page-about .flow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: flow;
}
.page-about .flow-step {
  position: relative;
  padding: 16px 18px;
  background: var(--ab-card);
  border: 1px solid var(--ink-500);
  clip-path: polygon(var(--ab-cut-sm) 0, 100% 0, 100% 100%, 0 100%, 0 var(--ab-cut-sm));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .flow-step:hover {
  transform: translateY(-2px);
  border-color: var(--jade-500);
}
.page-about .flow-step__idx {
  display: block;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--jade-300);
  margin-bottom: 8px;
}
.page-about .flow-step__title {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--paper-100);
}
.page-about .flow-step__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--text-soft);
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}
.page-about .team-card {
  position: relative;
  padding: 22px 20px 20px;
  background: var(--ab-card);
  border: 1px solid var(--ink-500);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut)), calc(100% - var(--ab-cut)) 100%, 0 100%);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .team-card:hover {
  transform: translateY(-2px);
  border-color: var(--gold-400);
}
.page-about .team-card::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 46px;
  height: 2px;
  background: var(--clay-500);
}
.page-about .team-card--tech::after {
  background: var(--jade-500);
}
.page-about .team-card__num {
  display: block;
  font-size: clamp(32px, 5vw, 46px);
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: rgba(168, 176, 184, 0.35);
  margin-bottom: 12px;
}
.page-about .team-card__name {
  margin: 0 0 10px;
  font-size: 17px;
  color: var(--paper-100);
}
.page-about .team-card__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--text-soft);
}
.page-about .team-card__meta {
  margin: 14px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--ab-hair);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gray-400);
  text-transform: uppercase;
}

/* ---------- 口径条目 ---------- */
.page-about .notation-row {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-top: 1px solid var(--ab-hair);
}
.page-about .notation-row:last-child {
  border-bottom: 1px solid var(--ab-hair);
}
.page-about .notation-row__key {
  margin: 0;
  font-size: 16px;
  color: var(--paper-100);
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-about .notation-row__key::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--cinnabar-500);
  transform: rotate(45deg);
  flex: 0 0 auto;
}
.page-about .notation-row__val {
  margin: 0;
  font-size: 14px;
  line-height: 2;
  color: var(--text-soft);
  max-width: 64ch;
}
.page-about .notation-row__link {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold-400);
  text-decoration: none;
  justify-self: start;
  border-bottom: 1px solid rgba(214, 169, 76, 0.4);
  padding-bottom: 2px;
}
.page-about .notation-row__link:hover,
.page-about .notation-row__link:focus-visible {
  color: var(--paper-100);
  border-bottom-color: var(--paper-100);
  outline: none;
}

.page-about .about-note {
  padding: 16px 18px;
  font-size: 12.5px;
  line-height: 1.95;
  color: var(--gray-200);
  background: rgba(10, 26, 46, 0.62);
  border: 1px solid var(--ink-500);
}
.page-about .about-note--boxed,
.page-about .note--boxed.about-note {
  border-left: 2px solid var(--gold-400);
}
.page-about .about-note p {
  margin: 0 0 8px;
}
.page-about .about-note p:last-child {
  margin-bottom: 0;
}
.page-about .about-note__title {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-400);
}
.page-about .about-note__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-about .about-note__list a {
  color: var(--text-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.page-about .about-note__list a:hover,
.page-about .about-note__list a:focus-visible {
  color: var(--gold-400);
  border-bottom-color: rgba(214, 169, 76, 0.5);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .column-map {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .flow-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .notation-row {
    grid-template-columns: minmax(120px, 0.32fr) minmax(0, 1fr);
    grid-template-areas:
      "key val"
      "key link";
    column-gap: 24px;
    align-items: start;
  }
  .page-about .notation-row__key { grid-area: key; }
  .page-about .notation-row__val { grid-area: val; }
  .page-about .notation-row__link { grid-area: link; margin-top: 4px; }
}

@media (min-width: 980px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.85fr);
    align-items: start;
  }
  .page-about .about-split--reverse {
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.9fr);
  }
  .page-about .about-split--note {
    grid-template-columns: minmax(0, 1.75fr) minmax(260px, 0.78fr);
  }
  .page-about .column-map {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .flow-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .timeline__item {
    grid-template-columns: var(--ab-rail) minmax(0, 1fr);
    column-gap: clamp(20px, 3vw, 36px);
    align-items: start;
  }
  .page-about .timeline__year {
    position: sticky;
    top: 96px;
    font-size: 26px;
    text-align: right;
    padding-right: 4px;
  }
  .page-about .timeline__item:nth-child(odd) .timeline__card {
    margin-right: 4%;
  }
  .page-about .timeline__item:nth-child(even) .timeline__card {
    margin-left: 6%;
  }
}

@media (min-width: 1200px) {
  .page-about .column-map {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .flow-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-frame__inner {
    padding-inline: 8px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__card,
  .page-about .column-node,
  .page-about .flow-step,
  .page-about .team-card {
    transition: none;
  }
  .page-about .timeline__card:hover,
  .page-about .column-node:hover,
  .page-about .flow-step:hover,
  .page-about .team-card:hover {
    transform: none;
  }
  .page-about .timeline__note {
    max-height: none;
    opacity: 1;
    margin-top: 10px;
    padding-left: 10px;
    transition: none;
  }
}
<<<END>>>