.page-about {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .about-crumb {
  padding: 18px 0 10px;
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
}

.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--line);
}

.page-about .breadcrumb-link {
  color: var(--ember-deep);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.page-about .breadcrumb-link:hover,
.page-about .breadcrumb-link:focus-visible {
  border-bottom-color: var(--ember);
}

.page-about .breadcrumb-current {
  color: var(--ink);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  background: var(--indigo);
  color: var(--paper);
  border-top: var(--border) solid var(--ink);
  border-bottom: var(--border) solid var(--ink);
  padding: clamp(36px, 6vw, 80px) 0 clamp(32px, 5vw, 64px);
}

.page-about .about-hero__inner {
  display: grid;
  gap: 20px;
}

.page-about .about-hero__kicker {
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--winter);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7.4vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  max-width: 18em;
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.85;
  color: #EDE4D2;
}

.page-about .about-hero__facts {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border: var(--border) solid var(--indigo-soft);
  background: rgba(46, 60, 116, 0.45);
}

.page-about .about-fact__label {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ember);
  text-transform: uppercase;
}

.page-about .about-fact__value {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  color: var(--paper);
}

/* ---------- 通用章节 ---------- */

.page-about .about-sec {
  padding: clamp(44px, 7vw, 96px) 0;
  border-bottom: 2px solid var(--line);
}

.page-about .about-sec--tint {
  background: #F1E8D6;
}

.page-about .about-sec--dark {
  background: var(--indigo);
  color: var(--paper);
  border-bottom: var(--border) solid var(--ink);
}

.page-about .about-sec--dark .eyebrow {
  color: var(--winter);
}

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

.page-about .about-sec--dark .lead {
  color: #E3DAC8;
}

.page-about .section-title {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.01em;
}

.page-about .eyebrow {
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ember-deep);
}

.page-about .lead {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about p {
  line-height: 1.85;
}

.page-about .about-lead {
  max-width: 40em;
  margin-bottom: 26px;
}

/* ---------- 双栏 ---------- */

.page-about .about-split {
  display: grid;
  gap: 20px;
}

.page-about .about-split__main p {
  margin: 0 0 14px;
  max-width: 36em;
}

.page-about .about-split__aside {
  align-self: start;
  padding: 20px;
  border: var(--border) solid var(--ink);
  background: #FFFDF7;
  box-shadow: var(--shadow-sm);
}

.page-about .about-split__aside--plain {
  background: transparent;
  box-shadow: none;
  border-style: dashed;
}

.page-about .about-aside-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15px;
  letter-spacing: 0.02em;
}

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

.page-about .about-aside-btn {
  margin-top: 14px;
  display: inline-block;
}

.page-about .about-rot {
  display: none;
  margin: 0;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--muted);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

/* ---------- 图片 ---------- */

.page-about .about-figure,
.page-about .about-banner {
  margin: 0;
  border: var(--border) solid var(--ink);
  background: #FFFDF7;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.page-about .about-banner {
  margin-bottom: 26px;
}

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

.page-about .about-figure__cap {
  padding: 9px 12px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  border-top: 2px solid var(--line);
  background: #FBF5E8;
}

/* ---------- 五格流程 ---------- */

.page-about .about-split--flow {
  margin-bottom: 24px;
}

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

.page-about .flow__step {
  padding: 18px 16px;
  background: #FFFDF7;
}

.page-about .flow__step--b { background: #FBF3E3; }
.page-about .flow__step--c { background: #F5EAD5; }
.page-about .flow__step--d { background: #EFE2C7; }
.page-about .flow__step--e { background: #E8D9BA; }

.page-about .flow__num {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ember-deep);
  margin-bottom: 8px;
}

.page-about .flow__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.3;
}

.page-about .flow__text {
  margin: 0 0 10px;
  font-size: 13.5px;
  line-height: 1.75;
}

.page-about .flow__who {
  margin: 0;
  padding-top: 8px;
  border-top: 2px solid var(--line);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 校对细节 ---------- */

.page-about .about-check {
  display: grid;
  gap: 20px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 2px dashed var(--line);
}

.page-about .about-check__body p {
  margin: 0 0 12px;
  max-width: 32em;
  font-size: 15px;
}

.page-about .about-check__link {
  margin-top: 6px;
  display: inline-block;
}

/* ---------- 时间轴 ---------- */

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

.page-about .tl__item {
  position: relative;
  padding: 0 0 30px 26px;
  border-left: 2px solid var(--line);
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--paper);
  border: 3px solid var(--ink);
}

.page-about .tl__item--now::before {
  background: var(--ember);
  border-color: var(--ember-deep);
}

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

.page-about .tl__year {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 38px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--indigo);
  margin-bottom: 10px;
}

.page-about .tl__body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}

.page-about .tl__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.3;
}

.page-about .tl__body p {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  color: var(--muted);
}

.page-about .about-tlback {
  margin: 26px 0 0;
  padding-left: 26px;
  font-size: 14px;
  color: var(--muted);
}

.page-about .about-tlback a {
  color: var(--ember-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--ember);
}

/* ---------- 团队标签页 ---------- */

.page-about .about-tabs {
  margin-top: 6px;
}

.page-about .about-tabs .tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-tabs .tab-button {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 10px 16px;
  border: var(--border) solid var(--ink);
  border-radius: var(--pill);
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.page-about .about-tabs .tab-button[aria-selected="true"] {
  background: var(--ember);
  color: var(--ink);
  box-shadow: 3px 3px 0 var(--winter);
}

.page-about .about-tabs .tab-button:focus-visible {
  outline: 3px solid var(--winter);
  outline-offset: 3px;
}

.page-about .about-tabs .tab-panel {
  margin-top: 16px;
  padding: 20px;
  border: var(--border) solid var(--indigo-soft);
  background: rgba(46, 60, 116, 0.55);
}

.page-about .about-tabs__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  color: var(--ember);
}

.page-about .about-tabs .tab-panel p {
  margin: 0 0 10px;
  max-width: 36em;
  font-size: 15px;
  color: #E6DDCB;
}

.page-about .about-tabs .tab-panel p:last-child {
  margin-bottom: 0;
}

/* ---------- 合作生态 ---------- */

.page-about .about-eco {
  display: grid;
  gap: 16px;
}

.page-about .about-eco__card {
  padding: 20px;
  border: var(--border) solid var(--ink);
  background: #FFFDF7;
  box-shadow: var(--shadow-sm);
  border-top-width: 10px;
}

.page-about .about-eco__card--summer { border-top-color: var(--summer); }
.page-about .about-eco__card--autumn { border-top-color: var(--autumn); }
.page-about .about-eco__card--winter { border-top-color: var(--winter); }

.page-about .about-eco__num {
  margin: 0 0 6px;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 40px;
  line-height: 1;
  color: var(--indigo);
}

.page-about .about-eco__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.3;
}

.page-about .about-eco__card p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 面板迭代 ---------- */

.page-about .panel-steps {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .panel-steps__item {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border: 2px solid var(--line);
  border-left: 8px solid var(--autumn);
  background: #FFFDF7;
}

.page-about .panel-steps__item--now {
  border-left-color: var(--ember);
  border-width: var(--border);
  box-shadow: var(--shadow-sm);
}

.page-about .panel-steps__ver {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 20px;
  color: var(--ember-deep);
}

.page-about .panel-steps__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16px;
  line-height: 1.3;
}

.page-about .panel-steps__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 三个方向 ---------- */

.page-about .about-next {
  display: grid;
  gap: 14px;
}

.page-about .about-next__item {
  padding: 20px;
  border: var(--border) solid var(--ink);
  background: #FFFDF7;
  box-shadow: var(--shadow);
}

.page-about .about-next__num {
  display: block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 34px;
  line-height: 1;
  color: var(--spring);
  margin-bottom: 8px;
}

.page-about .about-next__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.3;
}

.page-about .about-next__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-cta {
  margin-top: 30px;
  padding: 24px;
  border: var(--border) solid var(--ink);
  background: var(--indigo);
  color: var(--paper);
  display: grid;
  gap: 16px;
  box-shadow: var(--shadow);
}

.page-about .about-cta__text {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.4;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

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

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

@media (min-width: 900px) {
  .page-about .about-split {
    grid-template-columns: 64px minmax(0, 1fr) minmax(0, 320px);
    gap: 28px;
    align-items: start;
  }

  .page-about .about-split__main {
    grid-column: 2;
  }

  .page-about .about-split__aside {
    grid-column: 3;
  }

  .page-about .about-rot {
    display: block;
    grid-column: 1;
    justify-self: start;
    height: 180px;
    overflow: hidden;
  }

  .page-about .about-split--flow {
    grid-template-columns: minmax(0, 7fr) 64px minmax(0, 4fr);
    align-items: end;
  }

  .page-about .about-split--flow .about-split__main {
    grid-column: 1;
  }

  .page-about .about-split--flow .about-figure {
    grid-column: 3;
  }

  .page-about .flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .tl__item {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 28px;
    padding-bottom: 42px;
  }

  .page-about .tl__year {
    font-size: 62px;
    margin-bottom: 0;
    text-align: right;
  }

  .page-about .about-tlback {
    padding-left: 228px;
  }

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

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

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 28px 32px;
  }

  .page-about .about-split__aside {
    padding: 24px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero__title {
    max-width: 16em;
  }

  .page-about .tl__year {
    font-size: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}
<<<END>>>