.page-about {
  --about-hair: rgba(42, 45, 53, .86);
  --about-glow: rgba(228, 3, 46, .16);
}

.page-about .about-crumb-wrap {
  padding-top: 20px;
  padding-bottom: 4px;
}

.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--c-muted);
}

.page-about .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--c-grid);
}

.page-about .breadcrumb a {
  color: var(--c-muted);
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  color: var(--c-white);
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--c-white);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-top: 24px;
  padding-bottom: 56px;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 32px;
}

.page-about .about-hero-kicker {
  color: var(--c-gold);
  margin: 0 0 10px;
}

.page-about .about-hero-title {
  margin: 0 0 18px;
  max-width: 20ch;
}

.page-about .about-hero-lede {
  max-width: 62ch;
  margin: 0 0 26px;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  background: var(--c-grid);
  border: 1px solid var(--c-grid);
}

.page-about .hero-stat {
  background: var(--c-panel);
  padding: 16px 18px;
  display: flex;
  flex-direction: column-reverse;
  gap: 6px;
}

.page-about .hero-stat dt {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-muted);
  margin: 0;
}

.page-about .hero-stat-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--c-white);
  letter-spacing: -.02em;
}

.page-about .hero-stat:first-child .hero-stat-num {
  color: var(--c-red);
}

/* ---------- 目录 ---------- */

.page-about .about-toc {
  margin-top: 44px;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--c-grid);
}

.page-about .about-toc-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--c-grid);
  font-size: 14px;
  color: var(--c-text);
  text-decoration: none;
  transition: color var(--dur) ease, padding-left var(--dur) ease;
}

.page-about .about-toc-link .toc-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-gold);
  letter-spacing: .04em;
}

.page-about .about-toc-link:hover {
  color: var(--c-white);
  padding-left: 6px;
}

.page-about .about-toc-link[aria-current="true"] {
  color: var(--c-red);
}

.page-about .about-toc-link[aria-current="true"] .toc-num {
  color: var(--c-red);
}

/* ---------- 章节头通用微调 ---------- */

.page-about .section-head {
  margin-bottom: 32px;
}

.page-about .section-title {
  max-width: 26ch;
}

/* ---------- 01 起步 ---------- */

.page-about .about-origin-split {
  display: grid;
  gap: 36px;
}

.page-about .about-origin-text p {
  margin: 0 0 1.1em;
  max-width: 62ch;
}

.page-about .about-origin-text strong {
  color: var(--c-white);
}

.page-about .about-origin-text a {
  color: var(--c-red);
  text-decoration: none;
  border-bottom: 1px solid rgba(228, 3, 46, .4);
}

.page-about .about-origin-text a:hover {
  border-bottom-color: var(--c-red);
}

.page-about .about-origin-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-about .fact-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--c-grid);
  background: var(--c-panel);
}

.page-about .fact-num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--c-gold);
}

.page-about .fact-label {
  font-size: 13px;
  color: var(--c-muted);
}

.page-about .about-origin-figure {
  margin: 0;
  border: 1px solid var(--about-hair);
  background:
    linear-gradient(180deg, rgba(22, 24, 29, .9), rgba(10, 11, 14, .96));
  padding: 20px 16px 14px;
}

.page-about .region-dots {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

.page-about .region-dots circle {
  fill: var(--c-grid);
}

.page-about .region-dots-row--a circle,
.page-about .region-dots-row--b circle {
  fill: var(--c-white);
  opacity: .92;
}

.page-about .region-dots-row--c circle,
.page-about .region-dots-row--d circle,
.page-about .region-dots-row--e circle {
  fill: var(--c-gold);
  opacity: .78;
}

.page-about .region-dots-row--f circle,
.page-about .region-dots-row--g circle {
  fill: var(--c-red);
  opacity: .6;
}

.page-about .about-origin-figure .media-caption {
  margin-top: 14px;
}

/* ---------- 02 工作室 ---------- */

.page-about .about-studios-figure {
  margin: 0 0 34px;
  border: 1px solid var(--about-hair);
}

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

.page-about .studio-board {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.page-about .studio-card {
  border: 1px solid var(--c-grid);
  background: var(--c-panel);
  padding: 22px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  overflow: hidden;
}

.page-about .studio-card::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--c-grid);
  transition: background var(--dur) ease;
}

.page-about .studio-card:hover::after {
  background: var(--c-red);
}

.page-about .studio-card--lead {
  border-color: rgba(228, 3, 46, .42);
}

.page-about .studio-card--lead::after {
  background: var(--c-red);
}

.page-about .studio-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-about .studio-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-gold);
  letter-spacing: .06em;
}

.page-about .studio-name {
  margin: 0;
  flex: 1 1 auto;
}

.page-about .studio-count {
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--c-white);
  border: 1px solid var(--c-grid);
  padding: 2px 9px;
  letter-spacing: .04em;
}

.page-about .studio-card p {
  margin: 0;
  font-size: 15px;
  color: var(--c-text);
}

.page-about .studio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .studio-tags li {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-muted);
  border: 1px solid var(--c-grid);
  padding: 4px 10px;
}

.page-about .about-studios-note {
  margin: 26px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--c-gold);
  font-size: 14px;
  color: var(--c-muted);
  max-width: 74ch;
}

/* ---------- 03 质检四关 ---------- */

.page-about .gate-list {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--c-grid);
  border: 1px solid var(--c-grid);
}

.page-about .gate-item {
  background: var(--c-black);
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 18px;
  align-items: start;
  transition: background var(--dur) ease;
}

.page-about .gate-item:hover {
  background: var(--c-panel);
}

.page-about .gate-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--c-gold);
  line-height: 1;
  padding-top: 2px;
}

.page-about .gate-title {
  margin: 0 0 8px;
}

.page-about .gate-body p {
  margin: 0;
  font-size: 15px;
  color: var(--c-text);
  max-width: 64ch;
}

.page-about .about-quality-figure {
  margin: 0;
  border: 1px solid var(--about-hair);
  max-width: 780px;
}

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

.page-about .about-quality-figure .media-caption {
  padding: 12px 16px 14px;
}

/* ---------- 04 时间轴 ---------- */

.page-about .about-timeline {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 7px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-red), var(--c-gold) 55%, var(--c-grid));
}

.page-about .tl-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 0 0 34px 30px;
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--c-black);
  border: 2px solid var(--c-grid);
}

.page-about .tl-item:first-child::before {
  border-color: var(--c-red);
  background: var(--c-red);
}

.page-about .tl-item--now::before {
  border-color: var(--c-green);
  background: var(--c-green);
}

.page-about .tl-year {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .tl-year-num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--c-white);
  letter-spacing: -.02em;
  line-height: 1;
}

.page-about .tl-year-tag {
  color: var(--c-gold);
}

.page-about .tl-title {
  margin: 4px 0 8px;
}

.page-about .tl-text {
  margin: 0;
  font-size: 15px;
  color: var(--c-text);
  max-width: 66ch;
}

.page-about .tl-text a {
  color: var(--c-red);
  text-decoration: none;
  border-bottom: 1px solid rgba(228, 3, 46, .4);
}

.page-about .tl-text a:hover {
  border-bottom-color: var(--c-red);
}

.page-about .about-timeline-figure {
  margin: 0;
  border: 1px solid var(--about-hair);
}

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

/* ---------- 05 伙伴 ---------- */

.page-about .partner-split {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.page-about .partner-card {
  padding: 24px 22px 26px;
  border: 1px solid var(--c-grid);
  background: linear-gradient(160deg, rgba(22, 24, 29, .96), rgba(10, 11, 14, 1));
}

.page-about .partner-card--local {
  border-left: 3px solid var(--c-red);
}

.page-about .partner-card--tech {
  border-left: 3px solid var(--c-gold);
}

.page-about .partner-badge {
  display: inline-block;
  color: var(--c-muted);
  border: 1px solid var(--c-grid);
  padding: 3px 10px;
  margin-bottom: 14px;
}

.page-about .partner-name {
  margin: 0 0 12px;
}

.page-about .partner-card p {
  margin: 0 0 12px;
  font-size: 15px;
  color: var(--c-text);
  max-width: 60ch;
}

.page-about .partner-effect {
  color: var(--c-muted) !important;
  font-size: 14px !important;
  padding-top: 12px;
  border-top: 1px solid var(--c-grid);
  margin-bottom: 0 !important;
}

.page-about .partner-strip {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  padding-top: 20px;
  border-top: 1px solid var(--c-grid);
}

/* ---------- 06 数字 ---------- */

.page-about .number-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--c-grid);
  border: 1px solid var(--c-grid);
}

.page-about .number-cell {
  background: var(--c-panel);
  padding: 20px 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .number-cell--accent {
  background:
    linear-gradient(150deg, rgba(228, 3, 46, .14), rgba(22, 24, 29, 1) 62%),
    var(--c-panel);
}

.page-about .number-value {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--c-white);
  letter-spacing: -.03em;
}

.page-about .number-cell--accent .number-value {
  color: var(--c-red);
}

.page-about .number-unit {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-gold);
}

.page-about .number-label {
  font-size: 14px;
  color: var(--c-text);
  margin-top: 4px;
}

.page-about .number-note {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--c-muted);
  max-width: 40ch;
}

.page-about .about-closing {
  margin-top: 32px;
  padding: 26px 22px;
  border: 1px solid var(--c-grid);
  background: var(--c-black);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.page-about .about-closing p {
  margin: 0;
  font-size: 15px;
  color: var(--c-text);
  max-width: 60ch;
}

.page-about .about-closing a {
  color: var(--c-red);
  text-decoration: none;
  border-bottom: 1px solid rgba(228, 3, 46, .4);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-toc {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-toc-link {
    padding: 16px 14px 16px 2px;
    border-right: 1px solid var(--c-grid);
  }

  .page-about .about-toc-link:nth-child(2n) {
    border-right: 0;
    padding-left: 16px;
  }

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

  .page-about .number-cell--wide {
    grid-column: span 2;
  }

  .page-about .gate-item {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 22px;
    padding: 24px 24px;
  }

  .page-about .gate-num {
    font-size: 32px;
  }
}

@media (min-width: 760px) {
  .page-about .studio-board {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .studio-card--lead {
    grid-column: span 4;
  }

  .page-about .studio-card--sm {
    grid-column: span 2;
  }

  .page-about .partner-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 20px;
  }

  .page-about .about-closing {
    padding: 30px 28px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: end;
  }

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

  .page-about .about-origin-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

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

  .page-about .about-toc-link:nth-child(3n) {
    border-right: 0;
  }

  .page-about .about-toc-link:nth-child(2n) {
    padding-left: 16px;
  }

  .page-about .about-timeline {
    padding-left: 8px;
  }

  .page-about .tl-item {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 28px;
    padding-left: 34px;
  }

  .page-about .about-timeline::before {
    left: 7px;
  }

  .page-about .tl-year {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

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

  .page-about .number-cell--wide {
    grid-column: span 2;
    grid-row: span 2;
    justify-content: center;
  }

  .page-about .number-cell--wide .number-value {
    font-size: 76px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-toc {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-toc-link,
  .page-about .about-toc-link:nth-child(2n),
  .page-about .about-toc-link:nth-child(3n) {
    padding: 18px 14px 18px 2px;
    border-right: 1px solid var(--c-grid);
  }

  .page-about .about-toc-link:last-child {
    border-right: 0;
  }

  .page-about .about-hero-title {
    font-size: 62px;
  }

  .page-about .hero-stat-num {
    font-size: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-toc-link,
  .page-about .studio-card::after,
  .page-about .gate-item {
    transition: none;
  }
}
<<<END>>>