/* ===== 品牌总览 · 页面专属样式（作用域：.page-about） ===== */
.page-about {
  --ab-gutter: 18px;
  --ab-axis-w: 210px;
  --ab-gap: 56px;
  --ab-rule: 1px solid rgba(110, 90, 34, .42);
  --ab-fade: rgba(242, 240, 234, .84);
  --ab-dots: rgba(110, 90, 34, .45);
  background: var(--ink);
  color: var(--cloud);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  padding-bottom: 72px;
}

@media (min-width: 768px) {
  .page-about { --ab-gutter: 24px; }
}

@media (min-width: 1200px) {
  .page-about { --ab-gutter: 32px; --ab-axis-w: 224px; --ab-gap: 72px; }
}

.page-about .about-wrap {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-left: var(--ab-gutter);
  padding-right: var(--ab-gutter);
  box-sizing: border-box;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: 26px;
  padding-bottom: 4px;
  font-size: 13px;
}

.page-about .crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .crumbs__item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--silver);
}

.page-about .crumbs__item + .crumbs__item::before {
  content: "/";
  color: var(--gold-dim);
}

.page-about .crumbs__link {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .crumbs__link:hover {
  color: var(--gold-hi);
  border-bottom-color: var(--gold-hi);
}

.page-about .crumbs__item [aria-current="page"] {
  color: var(--gold);
}

/* ---------- 首屏 ---------- */
.page-about .about-masthead {
  padding-top: 40px;
  padding-bottom: 34px;
  border-bottom: var(--ab-rule);
}

.page-about .about-masthead__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-about .about-masthead__dot {
  width: 7px;
  height: 7px;
  background: var(--cinnabar);
  transform: rotate(45deg);
  flex: none;
}

.page-about .about-masthead__title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(30px, 6.4vw, 60px);
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--cloud);
  max-width: 16em;
}

.page-about .about-masthead__lede {
  margin: 22px 0 0;
  max-width: 46em;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ab-fade);
}

/* 关键数字格 */
.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 34px;
  background: var(--ab-dots);
  border: var(--ab-rule);
}

.page-about .about-facts__item {
  background: var(--ink);
  padding: 18px 16px;
}

.page-about .about-facts__value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(23px, 4.6vw, 32px);
  line-height: 1.1;
  color: var(--gold);
  letter-spacing: -.02em;
}

.page-about .about-facts__label {
  display: block;
  margin-top: 7px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--silver);
}

@media (min-width: 900px) {
  .page-about .about-facts { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ---------- 通栏主图 ---------- */
.page-about .about-hero {
  margin: 0;
  padding-top: 38px;
}

.page-about .about-hero__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--gold-dim);
  background: var(--coal);
  box-shadow: 10px 10px 0 rgba(110, 90, 34, .16);
}

.page-about .about-hero__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 13, 15, 0) 42%, rgba(11, 13, 15, .7) 100%);
  pointer-events: none;
}

.page-about .about-hero__caption {
  margin-top: 14px;
  padding-left: 12px;
  border-left: 2px solid var(--gold-dim);
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver);
}

/* ---------- 主体两栏 ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-top: 26px;
}

@media (min-width: 1024px) {
  .page-about .about-body {
    grid-template-columns: var(--ab-axis-w) minmax(0, 1fr);
    gap: var(--ab-gap);
    align-items: start;
  }
}

/* ---------- 左侧刻度轴 ---------- */
.page-about .about-axis {
  position: relative;
  padding-top: 4px;
}

@media (min-width: 1024px) {
  .page-about .about-axis {
    position: sticky;
    top: 104px;
    padding-top: 52px;
  }
}

.page-about .about-axis__caption {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--gold-dim);
}

.page-about .about-axis__list {
  display: flex;
  gap: 8px;
  margin: 0 calc(var(--ab-gutter) * -1);
  padding: 0 var(--ab-gutter) 12px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .about-axis__list li {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.page-about .about-axis__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid var(--gold-dim);
  color: var(--silver);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-about .about-axis__link:hover {
  color: var(--gold-hi);
  border-color: var(--gold-hi);
  background: rgba(201, 162, 39, .08);
}

.page-about .about-axis__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
}

.page-about .about-axis__scale { display: none; }

@media (min-width: 1024px) {
  .page-about .about-axis__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    margin: 0;
    padding: 0;
    border-left: var(--ab-rule);
    scroll-snap-type: none;
  }

  .page-about .about-axis__list li { width: 100%; }

  .page-about .about-axis__link {
    display: flex;
    width: 100%;
    box-sizing: border-box;
    border: none;
    border-left: 2px solid transparent;
    margin-left: -1px;
    padding: 9px 0 9px 16px;
    white-space: normal;
    font-size: 13.5px;
  }

  .page-about .about-axis__link:hover {
    background: linear-gradient(90deg, rgba(201, 162, 39, .12), rgba(201, 162, 39, 0) 72%);
  }

  .page-about .about-axis__scale {
    display: block;
    margin-top: 30px;
    padding-top: 20px;
    border-top: var(--ab-rule);
  }

  .page-about .about-axis__years {
    position: relative;
    margin: 0;
    padding: 0 0 0 18px;
    list-style: none;
    border-left: var(--ab-rule);
  }

  .page-about .about-axis__years li { position: relative; }

  .page-about .about-axis__years li::before {
    content: "";
    position: absolute;
    left: -19px;
    top: 15px;
    width: 7px;
    height: 1px;
    background: var(--gold-dim);
    transition: width 180ms var(--ease), background-color 180ms var(--ease);
  }

  .page-about .about-axis__years a {
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr);
    align-items: baseline;
    gap: 8px;
    padding: 5px 0;
    text-decoration: none;
    font-size: 12px;
    color: var(--silver);
    transition: color 160ms var(--ease);
  }

  .page-about .about-axis__years b {
    font-family: var(--font-mono);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -.01em;
    color: var(--gold-dim);
    transition: color 160ms var(--ease);
  }

  .page-about .about-axis__years a:hover { color: var(--cloud); }

  .page-about .about-axis__years a:hover b { color: var(--gold-hi); }

  .page-about .about-axis__years a:hover::before,
  .page-about .about-axis__years li:hover::before { width: 13px; background: var(--gold-hi); }
}

/* ---------- 内容区块 ---------- */
.page-about .about-block {
  padding: 40px 0;
  border-top: var(--ab-rule);
  scroll-margin-top: 104px;
}

.page-about .about-block:first-child {
  border-top: none;
  padding-top: 8px;
}

@media (min-width: 1024px) {
  .page-about .about-block { padding: 52px 0; }
  .page-about .about-block:first-child { padding-top: 62px; }
}

.page-about .about-block__index {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-about .about-block__title {
  margin: 0 0 20px;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: clamp(22px, 3.8vw, 33px);
  line-height: 1.32;
  letter-spacing: -.012em;
  color: var(--cloud);
  max-width: 20em;
}

.page-about .about-block__lede {
  margin: 0 0 26px;
  max-width: 42em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-prose p {
  margin: 0 0 16px;
  max-width: 44em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ab-fade);
}

.page-about .about-prose p:last-child { margin-bottom: 0; }

.page-about .about-prose strong {
  color: var(--cloud);
  font-weight: 600;
}

.page-about .about-prose a {
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-dim);
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-about .about-prose a:hover {
  color: var(--cloud);
  border-bottom-color: var(--gold-hi);
}

.page-about .about-mark {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--gold);
  border-bottom: 2px solid var(--gold-dim);
  padding-bottom: 1px;
  white-space: nowrap;
}

/* ---------- 七类游戏 ---------- */
.page-about .about-cats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 26px 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 720px) {
  .page-about .about-cats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.page-about .about-cats__item {
  position: relative;
  padding: 14px 14px 16px;
  border: 1px solid var(--ab-dots);
  background: linear-gradient(180deg, rgba(21, 25, 28, .92), rgba(11, 13, 15, .92));
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-about .about-cats__item::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 0;
  height: 2px;
  background: var(--cat, var(--gold));
  transition: width 180ms var(--ease);
}

.page-about .about-cats__item:hover {
  border-color: var(--gold-dim);
  transform: translateY(-2px);
}

.page-about .about-cats__item:hover::before { width: calc(100% + 2px); }

.page-about .about-cats__item--gold { --cat: var(--gold); }
.page-about .about-cats__item--jade { --cat: var(--jade); }
.page-about .about-cats__item--cinnabar { --cat: var(--cinnabar); }
.page-about .about-cats__item--indigo { --cat: var(--indigo-soft); }

.page-about .about-cats__name {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--cloud);
}

.page-about .about-cats__meta {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .02em;
  color: var(--silver);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: 28px;
}

@media (min-width: 900px) {
  .page-about .about-timeline-grid {
    grid-template-columns: minmax(0, 1fr) 292px;
    gap: 40px;
    align-items: start;
  }
}

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

.page-about .about-year {
  position: relative;
  padding: 0 0 32px 26px;
  border-left: 1px solid var(--ab-dots);
}

.page-about .about-year:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-about .about-year::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 6px;
  width: 9px;
  height: 9px;
  transform: translateX(-50%);
  background: var(--ink);
  border: 2px solid var(--gold);
  transition: background-color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-year:hover::before { background: var(--gold); }

.page-about .about-year__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--gold);
}

.page-about .about-year__title {
  margin: 5px 0 8px;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  color: var(--cloud);
}

.page-about .about-year__text {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--ab-fade);
}

.page-about .about-timeline-figure {
  margin: 0;
}

.page-about .about-timeline-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--gold-dim);
  background: var(--coal);
}

.page-about .about-timeline-figure figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--silver);
}

@media (min-width: 900px) {
  .page-about .about-timeline-figure {
    position: sticky;
    top: 116px;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 26px;
}

@media (min-width: 900px) {
  .page-about .about-team-grid {
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }
}

.page-about .about-team-figure {
  margin: 0;
}

.page-about .about-team-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--gold-dim);
  box-shadow: 8px 8px 0 rgba(110, 90, 34, .14);
}

.page-about .about-team-copy p {
  margin: 0 0 16px;
  max-width: 44em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ab-fade);
}

.page-about .about-team-copy strong {
  color: var(--cloud);
  font-weight: 600;
}

.page-about .about-org {
  display: block;
  width: 100%;
  max-width: 340px;
  height: auto;
  margin: 22px 0 10px;
  color: var(--gold-dim);
}

.page-about .about-org__legend {
  margin: 0 0 18px !important;
  font-family: var(--font-mono);
  font-size: 12px !important;
  color: var(--silver) !important;
}

/* ---------- 年度使用情况 ---------- */
.page-about .about-usage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 28px;
  background: var(--ab-dots);
  border: var(--ab-rule);
}

@media (min-width: 780px) {
  .page-about .about-usage { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.page-about .about-usage__cell {
  background: var(--ink);
  padding: 22px 20px 24px;
}

.page-about .about-usage__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(26px, 4.4vw, 38px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cloud);
}

.page-about .about-usage__num small {
  font-size: .46em;
  font-weight: 500;
  color: var(--gold);
  margin-left: 3px;
  letter-spacing: 0;
}

.page-about .about-usage__cap {
  display: block;
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--silver);
}

/* ---------- 联络 ---------- */
.page-about .about-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 26px;
}

@media (min-width: 780px) {
  .page-about .about-contact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.page-about .about-contact__card {
  position: relative;
  padding: 22px 20px 20px;
  border: 1px solid var(--gold-dim);
  background: linear-gradient(135deg, rgba(21, 25, 28, .96), rgba(11, 13, 15, .96));
  transition: border-color 180ms var(--ease);
}

.page-about .about-contact__card:hover { border-color: var(--gold-hi); }

.page-about .about-contact__tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink);
  background: var(--gold);
}

.page-about .about-contact__value {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--cloud);
  word-break: break-word;
}

.page-about .about-contact__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .about-contact__addr {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: var(--ab-rule);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .01em;
  color: var(--silver);
}

.page-about .about-contact__more {
  margin: 12px 0 0;
  max-width: 44em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ab-fade);
}

.page-about .about-contact__more a {
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-dim);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .about-contact__more a:hover {
  color: var(--cloud);
  border-bottom-color: var(--gold-hi);
}

/* ---------- 动效让步 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0ms !important;
    animation-duration: 0ms !important;
  }
}
</main>