.page-about {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

.page-about .about-wrap {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  color: var(--paper);
  background:
    radial-gradient(120% 100% at 88% 0%, rgba(61, 224, 196, .16), transparent 58%),
    radial-gradient(100% 80% at 0% 100%, rgba(232, 69, 31, .28), transparent 62%),
    var(--night);
}

.page-about .about-hero-ruler {
  height: 10px;
  background-image: repeating-linear-gradient(90deg, rgba(244, 236, 221, .55) 0 1px, transparent 1px 18px);
}

.page-about .about-hero-inner {
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(24px, 4vw, 44px) var(--gutter) clamp(34px, 5vw, 64px);
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-about .about-crumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(244, 236, 221, .58);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.page-about .about-crumb a {
  color: rgba(244, 236, 221, .78);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-crumb a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

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

.page-about .about-eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7vw, 84px);
  line-height: 1.02;
  letter-spacing: -.025em;
  text-wrap: balance;
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-about .about-lead {
  margin: 0;
  max-width: 38ch;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.85;
  color: rgba(244, 236, 221, .84);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.page-about .about-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  text-decoration: none;
  border: 2px solid transparent;
  transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}

.page-about .about-btn:hover {
  transform: translateY(-2px);
}

.page-about .about-btn:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 3px;
}

.page-about .about-btn--solid {
  background: var(--fox);
  border-color: var(--fox);
  color: var(--paper-white);
}

.page-about .about-btn--solid:hover {
  background: var(--ember);
  border-color: var(--ember);
}

.page-about .about-btn--ghost-light {
  border-color: rgba(244, 236, 221, .55);
  color: var(--paper);
}

.page-about .about-btn--ghost-light:hover {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--night);
}

.page-about .about-btn--ink {
  background: var(--night);
  border-color: var(--night);
  color: var(--paper-white);
}

.page-about .about-btn--ink:hover {
  background: var(--ink);
  border-color: var(--ink);
}

.page-about .about-hero-stats {
  list-style: none;
  margin: 8px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid rgba(244, 236, 221, .22);
  display: flex;
  flex-wrap: wrap;
  gap: clamp(22px, 5vw, 64px);
}

.page-about .about-stat {
  min-width: 0;
}

.page-about .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -.01em;
}

.page-about .stat-unit {
  font-size: .55em;
  margin-left: 2px;
}

.page-about .stat-label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: .04em;
  color: rgba(244, 236, 221, .6);
}

.page-about .about-hero-media {
  margin: 0;
  position: relative;
  background: var(--night);
}

.page-about .about-hero-media::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--fox), var(--yellow) 45%, var(--cyan));
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(.92) contrast(1.05);
}

/* ---------- 章节索引 ---------- */

.page-about .about-toc {
  position: sticky;
  top: 56px;
  z-index: 4;
  background: rgba(244, 236, 221, .95);
  border-bottom: 2px solid var(--ink);
}

.page-about .about-toc-list {
  list-style: none;
  margin: 0;
  padding: 10px var(--gutter);
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-toc-list::-webkit-scrollbar {
  display: none;
}

.page-about .about-toc-link {
  display: inline-block;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  white-space: nowrap;
  color: var(--slate);
  text-decoration: none;
  background: rgba(26, 21, 18, .07);
  clip-path: polygon(9px 0, 100% 0, calc(100% - 9px) 100%, 0 100%);
  transition: background-color .2s var(--ease), color .2s var(--ease);
}

.page-about .about-toc-link:hover,
.page-about .about-toc-link:focus-visible {
  background: var(--fox);
  color: var(--paper-white);
}

.page-about .about-toc-link:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 2px;
}

/* ---------- 通用章节 ---------- */

.page-about .about-section {
  padding-block: clamp(52px, 8vw, 108px);
  scroll-margin-top: 124px;
}

.page-about .sec-head {
  margin-bottom: clamp(26px, 4vw, 46px);
  max-width: 46rem;
}

.page-about .sec-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ember);
}

.page-about .sec-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--fox);
}

.page-about .sec-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 4.2vw, 44px);
  line-height: 1.12;
  letter-spacing: -.015em;
  text-wrap: balance;
}

.page-about .sec-intro {
  margin: 16px 0 0;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: var(--slate);
}

.page-about .about-text {
  font-size: clamp(16px, 1.35vw, 17px);
  line-height: 1.9;
  color: var(--ink);
  max-width: 36em;
}

.page-about .about-text p {
  margin: 0 0 1.1em;
}

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

.page-about .about-inline-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--ember);
  text-decoration: none;
  border-bottom: 2px solid var(--fox);
  padding-bottom: 3px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-inline-link:hover {
  color: var(--fox);
  border-bottom-color: var(--ember);
}

.page-about .about-inline-link--light {
  color: var(--cyan);
  border-bottom-color: rgba(61, 224, 196, .5);
}

.page-about .about-inline-link--light:hover {
  color: var(--paper-white);
  border-bottom-color: var(--paper-white);
}

/* ---------- 01 起点 ---------- */

.page-about .origin-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .origin-aside {
  border-left: 4px solid var(--fox);
  padding: 4px 0 4px 20px;
  align-self: start;
}

.page-about .aside-quote {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.5;
  color: var(--ink);
}

.page-about .aside-note {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--slate);
}

.page-about .about-years {
  list-style: none;
  margin: clamp(34px, 5vw, 60px) 0 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.page-about .about-year {
  position: relative;
  padding: 20px 0 20px 26px;
  border-bottom: 1px solid rgba(26, 21, 18, .16);
}

.page-about .about-year::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--fox);
}

.page-about .year-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: .02em;
  color: var(--ember);
}

.page-about .year-text {
  display: block;
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
  max-width: 44em;
}

/* ---------- 02 班次 ---------- */

.page-about .about-crew {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 3px;
  background: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-paper);
}

.page-about .crew-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0 14px;
  padding: 18px 20px;
  background: var(--paper-white);
}

.page-about .crew-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ember);
}

.page-about .crew-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-about .crew-count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--night);
}

.page-about .crew-bar {
  grid-column: 1 / -1;
  display: block;
  height: 6px;
  margin-top: 12px;
  background: rgba(26, 21, 18, .1);
}

.page-about .crew-bar-fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--fox), var(--yellow));
}

.page-about .crew-row:nth-child(1) .crew-bar-fill { width: 43%; }
.page-about .crew-row:nth-child(2) .crew-bar-fill { width: 21%; }
.page-about .crew-row:nth-child(3) .crew-bar-fill { width: 17%; }
.page-about .crew-row:nth-child(4) .crew-bar-fill { width: 19%; }

.page-about .crew-notes {
  display: grid;
  gap: 18px;
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .note-card {
  padding: 22px 22px 22px 24px;
  background: var(--paper-white);
  border-left: 4px solid var(--night);
  box-shadow: var(--shadow-paper);
}

.page-about .note-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .note-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 03 场馆库 ---------- */

.page-about .about-venues {
  background: var(--paper-white);
  border-block: 2px solid var(--ink);
}

.page-about .venue-grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .venue-copy {
  min-width: 0;
}

.page-about .venue-fields {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .venue-field {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(26, 21, 18, .22);
}

.page-about .field-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--fox);
}

.page-about .field-val {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .venue-more {
  margin: 22px 0 0;
}

.page-about .venue-figure {
  margin: 0;
  position: relative;
}

.page-about .venue-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-paper);
}

.page-about .venue-caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--slate);
  padding-left: 12px;
  border-left: 3px solid var(--yellow);
}

/* ---------- 04 校验 ---------- */

.page-about .about-checks {
  position: relative;
  overflow: hidden;
  color: var(--paper);
  background:
    radial-gradient(90% 70% at 100% 0%, rgba(61, 224, 196, .14), transparent 60%),
    var(--night);
}

.page-about .sec-head--dark .sec-title {
  color: var(--paper-white);
}

.page-about .sec-head--dark .sec-intro {
  color: rgba(244, 236, 221, .72);
}

.page-about .sec-head--dark .sec-kicker {
  color: var(--cyan);
}

.page-about .sec-head--dark .sec-kicker::before {
  background: var(--cyan);
}

.page-about .check-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 3px;
}

.page-about .check-step {
  position: relative;
  padding: 22px 22px 22px 24px;
  background: rgba(244, 236, 221, .06);
  border-left: 3px solid var(--cyan);
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .check-step:hover {
  background: rgba(244, 236, 221, .11);
  border-left-color: var(--fox);
}

.page-about .check-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: .02em;
}

.page-about .check-title {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  color: var(--paper-white);
}

.page-about .check-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 236, 221, .74);
}

.page-about .checks-figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

.page-about .checks-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid rgba(61, 224, 196, .3);
}

.page-about .checks-foot {
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: 26px;
  border-top: 1px solid rgba(61, 224, 196, .28);
}

.page-about .about-checks .about-text {
  color: rgba(244, 236, 221, .82);
}

.page-about .checks-link {
  margin: 20px 0 0;
}

/* ---------- 05 合作 ---------- */

.page-about .partner-figures {
  display: grid;
  gap: 3px;
  background: var(--ink);
  border: 2px solid var(--ink);
}

.page-about .partner-card {
  padding: 24px 22px;
  background: var(--paper);
  transition: background-color .2s var(--ease);
}

.page-about .partner-card:hover {
  background: var(--paper-white);
}

.page-about .partner-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1;
  color: var(--fox);
  letter-spacing: -.02em;
}

.page-about .partner-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16px;
  color: var(--ink);
}

.page-about .partner-text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .partner-award {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: clamp(26px, 4vw, 40px);
  padding: 18px 20px;
  background: var(--paper-white);
  border-left: 4px solid var(--yellow);
}

.page-about .award-tag {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--night);
  background: var(--yellow);
  padding: 4px 10px;
}

.page-about .award-text {
  margin: 0;
  flex: 1 1 240px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .partner-cta-line {
  margin: 24px 0 0;
}

/* ---------- 06 家庭观赛 ---------- */

.page-about .about-support {
  background: var(--paper-white);
  border-top: 2px solid var(--ink);
}

.page-about .support-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .support-tags {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .support-tag {
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--night);
  background: rgba(13, 27, 42, .09);
  clip-path: polygon(7px 0, 100% 0, calc(100% - 7px) 100%, 0 100%);
}

.page-about .support-actions {
  margin: 24px 0 0;
}

/* ---------- 收尾 CTA ---------- */

.page-about .about-cta {
  position: relative;
  overflow: hidden;
  background: var(--fox);
  color: var(--paper-white);
  padding-block: clamp(52px, 8vw, 104px);
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: 52%;
  height: 160%;
  background: var(--ember);
  transform: skewX(-12deg);
  opacity: .55;
  pointer-events: none;
}

.page-about .about-cta-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-about .cta-copy {
  min-width: 0;
}

.page-about .cta-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(255, 249, 239, .78);
}

.page-about .cta-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.8vw, 54px);
  line-height: 1.08;
  letter-spacing: -.02em;
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-about .cta-text {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: rgba(255, 249, 239, .9);
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 22px;
}

/* ---------- 断点 ---------- */

@media (min-width: 720px) {
  .page-about .about-toc {
    top: 64px;
  }

  .page-about .about-year {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
    padding-left: 30px;
  }

  .page-about .about-year::before {
    top: 26px;
  }

  .page-about .year-num {
    font-size: 22px;
  }

  .page-about .year-text {
    margin-top: 2px;
    font-size: 16px;
  }

  .page-about .venue-field {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }

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

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

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

  .page-about .cta-actions {
    gap: 14px 18px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    grid-template-areas:
      "crumb crumb"
      "eyebrow eyebrow"
      "title title"
      "lead lead"
      "actions actions"
      "stats stats";
  }

  .page-about .about-crumb { grid-area: crumb; }
  .page-about .about-eyebrow { grid-area: eyebrow; }
  .page-about .about-title { grid-area: title; }
  .page-about .about-lead { grid-area: lead; max-width: 44ch; }
  .page-about .about-hero-actions { grid-area: actions; }
  .page-about .about-hero-stats { grid-area: stats; }

  .page-about .origin-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-about .venue-grid {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 400px);
    align-items: start;
  }

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

  .page-about .support-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }

  .page-about .about-cta-inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-about .cta-actions {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-btn,
  .page-about .crew-bar-fill,
  .page-about .check-step,
  .page-about .partner-card,
  .page-about .about-toc-link {
    transition: none;
  }

  .page-about .about-btn:hover {
    transform: none;
  }
}
<<<END>>>