.page-about {
  --about-gutter: clamp(20px, 4.6vw, 56px);
  --about-line: rgba(201, 162, 83, 0.34);
  --about-body: #bcb7aa;
  --about-paper-ink: #23211c;
  --about-paper-muted: #55504a;
  --about-paper-gold: #8a6a20;
  position: relative;
  padding-bottom: clamp(64px, 9vw, 120px);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding: clamp(16px, 3vw, 34px) var(--about-gutter) 0;
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--gold-500);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  background: var(--ink-850);
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 8, 10, 0) 42%, rgba(7, 8, 10, 0.78) 100%);
  pointer-events: none;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-hero__cap {
  position: absolute;
  left: 18px;
  bottom: 14px;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.09em;
  color: var(--gold-300);
}

.page-about .about-hero__text {
  max-width: 920px;
  padding-top: clamp(26px, 4vw, 48px);
}

.page-about .about-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-500);
}

.page-about h1 {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 6.1vw, 74px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--gold-300);
}

.page-about .about-lead {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(16px, 1.55vw, 18px);
  line-height: 1.85;
  color: var(--paper-100);
}

.page-about .about-jumps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(26px, 3.4vw, 42px);
  padding-top: 22px;
  border-top: 1px solid var(--ink-700);
}

.page-about .about-jumps a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid rgba(201, 162, 83, 0.6);
  background: rgba(201, 162, 83, 0.05);
  color: var(--gold-300);
  text-decoration: none;
  transition: border-color 0.22s ease, color 0.22s ease, background 0.22s ease, transform 0.22s ease;
}

.page-about .about-jumps__y {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.03em;
}

.page-about .about-jumps__t {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray-400);
}

.page-about .about-jumps a:hover,
.page-about .about-jumps a:focus-visible {
  border-color: var(--cyan-400);
  background: rgba(52, 226, 216, 0.09);
  color: var(--cyan-400);
  transform: translateY(-2px);
}

.page-about .about-jumps a:hover .about-jumps__t,
.page-about .about-jumps a:focus-visible .about-jumps__t {
  color: var(--cyan-400);
}

/* ---------- 通用章节 ---------- */

.page-about .about-sec {
  padding: clamp(56px, 8vw, 108px) var(--about-gutter) 0;
}

.page-about .about-head {
  max-width: 760px;
  margin-bottom: clamp(26px, 3.6vw, 44px);
}

.page-about .about-head__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold-500);
}

.page-about .about-head__num::after {
  content: "";
  display: inline-block;
  width: 46px;
  height: 1px;
  margin-left: 12px;
  vertical-align: middle;
  background: var(--gold-500);
}

.page-about .about-head__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(25px, 3.3vw, 42px);
  line-height: 1.24;
  letter-spacing: -0.005em;
  color: var(--paper-100);
}

.page-about .about-head__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--gray-400);
}

.page-about .about-head--paper .about-head__num {
  color: var(--about-paper-gold);
}

.page-about .about-head--paper .about-head__num::after {
  background: var(--about-paper-gold);
}

.page-about .about-head--paper .about-head__title {
  color: var(--about-paper-ink);
}

.page-about .about-head--paper .about-head__lead {
  color: var(--about-paper-muted);
}

/* ---------- 时间轴 ---------- */

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, rgba(201, 162, 83, 0.05), var(--gold-500) 7%, var(--gold-500) 90%, rgba(201, 162, 83, 0.05));
}

.page-about .tl-item {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  column-gap: 16px;
  padding-bottom: clamp(32px, 4.6vw, 54px);
}

.page-about .tl-item:last-child {
  padding-bottom: 0;
}

.page-about .tl-marker {
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.page-about .tl-marker i {
  display: block;
  position: relative;
  z-index: 1;
  width: 12px;
  height: 12px;
  border: 2px solid var(--gold-500);
  border-radius: 50%;
  background: var(--ink-950);
  transition: background 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
}

.page-about .tl-item.is-in .tl-marker i,
.page-about .tl-item.is-visible .tl-marker i {
  background: var(--gold-500);
  border-color: var(--gold-300);
  box-shadow: 0 0 0 6px rgba(201, 162, 83, 0.14);
}

.page-about .tl-body {
  padding-bottom: 4px;
}

.page-about .tl-year {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 31px);
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--gold-300);
}

.page-about .tl-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.3vw, 26px);
  line-height: 1.34;
  color: var(--paper-100);
}

.page-about .tl-body p {
  margin: 0 0 10px;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-body);
}

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

.page-about .tl-detail {
  font-size: 14.5px !important;
  color: var(--gray-400) !important;
  border-left: 2px solid var(--jade-700);
  padding-left: 14px;
}

.page-about .tl-item--paper .tl-body {
  padding: clamp(20px, 3vw, 30px) clamp(20px, 3vw, 34px);
  background: var(--paper-100);
  border: 1px solid var(--paper-300);
  box-shadow: var(--shadow-hard);
}

.page-about .tl-item--paper .tl-year {
  color: var(--about-paper-gold);
}

.page-about .tl-item--paper .tl-title {
  color: var(--about-paper-ink);
}

.page-about .tl-item--paper .tl-body p {
  color: var(--about-paper-muted);
}

.page-about .tl-item--paper .tl-marker i {
  background: var(--ink-950);
  border-color: var(--gold-300);
}

.page-about .tl-item--paper.is-in .tl-marker i,
.page-about .tl-item--paper.is-visible .tl-marker i {
  background: var(--gold-300);
  box-shadow: 0 0 0 6px rgba(234, 215, 154, 0.16);
}

.page-about .tl-media {
  list-style: none;
  margin: 0 0 clamp(32px, 4.6vw, 54px);
  padding-left: 50px;
}

.page-about .tl-media figure {
  margin: 0;
  border: 1px solid var(--ink-700);
  overflow: hidden;
  background: var(--ink-850);
}

.page-about .tl-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

/* ---------- 类目收录 ---------- */

.page-about .cat-table {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ink-700);
}

.page-about .cat-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 22px 0;
  border-bottom: 1px solid var(--ink-700);
  transition: background 0.25s ease;
}

.page-about .cat-row:hover {
  background: rgba(201, 162, 83, 0.04);
}

.page-about .cat-row__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--gold-300);
  padding-left: 16px;
  position: relative;
}

.page-about .cat-row__name::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 1px;
  background: var(--gold-500);
}

.page-about .cat-row__note {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .cat-total {
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--gold-500);
  background: rgba(201, 162, 83, 0.06);
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--paper-100);
}

.page-about .cat-total strong {
  font-family: var(--font-mono);
  font-size: 1.14em;
  letter-spacing: 0.02em;
  color: var(--gold-300);
  font-weight: 500;
}

/* ---------- 团队 ---------- */

.page-about .about-inline-media {
  margin: 0 0 clamp(28px, 4vw, 44px);
  border: 1px solid var(--ink-700);
  overflow: hidden;
  background: var(--ink-850);
}

.page-about .about-inline-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .team-matrix {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--ink-700);
  background: var(--ink-850);
}

.page-about .team-col {
  padding: clamp(22px, 3vw, 32px);
}

.page-about .team-col + .team-col {
  border-top: 1px solid var(--ink-700);
}

.page-about .team-col__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  line-height: 1.3;
  color: var(--gold-300);
}

.page-about .team-col__tag {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
}

.page-about .team-col__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .team-col__list li {
  position: relative;
  padding: 0 0 0 18px;
  margin-bottom: 11px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-body);
}

.page-about .team-col__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 8px;
  height: 1px;
  background: var(--gold-500);
}

.page-about .team-col__list li:last-child {
  margin-bottom: 0;
}

/* ---------- 记录与数据 ---------- */

.page-about .about-paper {
  padding: clamp(26px, 4vw, 52px);
  background: var(--paper-100);
  border: 1px solid var(--paper-300);
  box-shadow: var(--shadow-hard);
}

.page-about .data-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--paper-300);
  border: 1px solid var(--paper-300);
}

.page-about .data-fact {
  background: var(--paper-100);
  padding: 22px 20px 24px;
}

.page-about .data-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 40px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--about-paper-ink);
}

.page-about .data-fact__unit {
  margin-left: 6px;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--about-paper-gold);
}

.page-about .data-fact__txt {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-paper-muted);
}

.page-about .about-paper__note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--paper-300);
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-paper-muted);
}

/* ---------- 供应方 ---------- */

.page-about .supply-band {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  padding: clamp(24px, 3.4vw, 40px);
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--gold-500);
  background: var(--ink-850);
}

.page-about .supply-band__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--about-body);
}

.page-about .supply-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .supply-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--ink-700);
  font-size: 14.5px;
  line-height: 1.6;
}

.page-about .supply-list li:last-child {
  border-bottom: 0;
}

.page-about .supply-list__k {
  flex: 0 0 118px;
  color: var(--gold-500);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-about .supply-list__v {
  flex: 1 1 200px;
  color: var(--paper-100);
}

/* ---------- 奖项 ---------- */

.page-about .award-band {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: clamp(24px, 3.4vw, 40px);
  border: 1px solid var(--jade-700);
  background: linear-gradient(120deg, rgba(16, 84, 76, 0.32), rgba(7, 8, 10, 0.2));
}

.page-about .award-band__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(36px, 5.6vw, 58px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold-300);
}

.page-about .award-band__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 27px);
  line-height: 1.34;
  color: var(--paper-100);
}

.page-about .award-band__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--about-body);
}

/* ---------- 后续入口 ---------- */

.page-about .about-next__title {
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.24;
  color: var(--paper-100);
}

.page-about .about-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--ink-700);
}

.page-about .about-next__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 4px;
  border-bottom: 1px solid var(--ink-700);
  text-decoration: none;
  transition: background 0.22s ease, padding-left 0.22s ease;
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  background: rgba(52, 226, 216, 0.06);
  padding-left: 14px;
}

.page-about .about-next__k {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--gold-300);
}

.page-about .about-next__link:hover .about-next__k,
.page-about .about-next__link:focus-visible .about-next__k {
  color: var(--cyan-400);
}

.page-about .about-next__v {
  font-size: 14px;
  line-height: 1.6;
  color: var(--gray-400);
}

/* ---------- 焦点态 ---------- */

.page-about a:focus-visible {
  outline: 3px solid var(--cyan-400);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-about .cat-row {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 0 28px;
    align-items: start;
    padding: 24px 0;
  }

  .page-about .cat-row__name {
    font-size: 20px;
    padding-top: 2px;
  }

  .page-about .data-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .supply-band {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .award-band {
    grid-template-columns: 168px minmax(0, 1fr);
    align-items: start;
    gap: 28px;
  }

  .page-about .about-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-left: 1px solid var(--ink-700);
  }

  .page-about .about-next__link {
    padding: 22px 20px;
    border-right: 1px solid var(--ink-700);
  }

  .page-about .about-next__link:hover,
  .page-about .about-next__link:focus-visible {
    padding-left: 28px;
  }
}

@media (min-width: 880px) {
  .page-about .tl-item {
    grid-template-columns: 140px 34px minmax(0, 1fr);
    column-gap: 22px;
  }

  .page-about .timeline::before {
    left: 157px;
  }

  .page-about .tl-marker {
    grid-column: 2;
    grid-row: 1;
    padding-top: 4px;
  }

  .page-about .tl-body {
    grid-column: 3;
    grid-row: 1;
  }

  .page-about .tl-year {
    position: absolute;
    left: 0;
    top: 2px;
    width: 120px;
    text-align: right;
    margin-bottom: 0;
  }

  .page-about .tl-item {
    position: relative;
  }

  .page-about .tl-item--paper .tl-body {
    padding-top: 26px;
    padding-bottom: 28px;
  }

  .page-about .tl-media {
    padding-left: 196px;
  }

  .page-about .tl-media figure {
    box-shadow: var(--shadow-hard);
  }
}

@media (min-width: 1040px) {
  .page-about .team-matrix {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .team-col + .team-col {
    border-top: 0;
    border-left: 1px solid var(--ink-700);
  }

  .page-about .data-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-next__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-jumps a,
  .page-about .tl-marker i,
  .page-about .cat-row,
  .page-about .about-next__link {
    transition: none;
  }

  .page-about .about-jumps a:hover,
  .page-about .about-jumps a:focus-visible {
    transform: none;
  }
}