/* ===== page-about 作用域 ===== */
.page-about {
  position: relative;
  --tl-pad: 1.75rem;
  --tl-node: 10px;
  --tl-gap: 2.5rem;
}

/* ---- 左侧阅读进度细线 ---- */
.page-about .about-rail {
  position: fixed;
  top: 0;
  left: 0;
  width: 2px;
  height: 100vh;
  z-index: 20;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(201, 162, 39, .10), rgba(201, 162, 39, .02) 70%, transparent);
}
.page-about .about-rail__bar {
  display: block;
  width: 100%;
  height: 0;
  background: linear-gradient(180deg, var(--patina), var(--gold) 55%, var(--gold-bright));
}

/* ---- 首屏 ---- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(2rem, 6vw, 4rem) clamp(2rem, 5vw, 4rem);
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -16%;
  width: 44rem;
  height: 44rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 162, 39, .11), transparent 62%);
  pointer-events: none;
}
.page-about .about-hero .breadcrumb {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 3.5rem);
}

.page-about .about-hero__main .display {
  margin: .5rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.15rem, 7.4vw, 5rem);
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-about .about-hero__main .lede {
  margin: clamp(1.15rem, 3vw, 1.75rem) 0 0;
  color: var(--paper-dim);
  max-width: 46ch;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.15rem 1.5rem;
  border-top: 1px solid var(--edge);
  padding-top: 1.25rem;
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: .3rem;
}
.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(1.55rem, 5vw, 2.15rem);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--gold);
}
.page-about .about-fact__label {
  font-size: .84rem;
  line-height: 1.5;
  color: var(--note);
}

/* ---- 时间轴区块 ---- */
.page-about .about-timeline {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--edge-soft);
}

.page-about .tl-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 3rem);
  align-items: start;
}
.page-about .tl-head__title {
  margin: .5rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 4.4vw, 2.6rem);
  line-height: 1.22;
  color: var(--paper);
}
.page-about .tl-head__text-p {
  margin: 1rem 0 0;
  max-width: 48ch;
  color: var(--paper-dim);
  line-height: 1.8;
}

.page-about .ab-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--edge);
  background: var(--ink-2);
}
.page-about .ab-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(11, 12, 14, .82));
  pointer-events: none;
}
.page-about .ab-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .ab-figure__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  margin: 0;
  padding: .9rem 1.1rem;
  font-size: .8rem;
  line-height: 1.6;
  color: var(--paper-dim);
}

/* 年份快捷定位 */
.page-about .about-years {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 clamp(1.75rem, 4vw, 2.75rem);
}
.page-about .about-years a {
  display: inline-block;
  padding: .34rem .8rem;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--patina-light);
  text-decoration: none;
  transition: color .24s var(--ease), border-color .24s var(--ease);
}
.page-about .about-years a:hover,
.page-about .about-years a:focus-visible {
  color: var(--gold-bright);
  border-color: var(--gold-deep);
}

/* 时间轴本体 */
.page-about .tl {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--tl-pad);
  border-left: 1px solid var(--edge);
}
.page-about .tl__item {
  position: relative;
  padding-bottom: clamp(2rem, 5vw, 3rem);
}
.page-about .tl__item:last-child {
  padding-bottom: 0;
}
.page-about .tl__node {
  position: absolute;
  top: .45rem;
  left: calc(-1 * var(--tl-pad) - (var(--tl-node) / 2));
  width: var(--tl-node);
  height: var(--tl-node);
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(201, 162, 39, .13);
}
.page-about .tl__body {
  max-width: 46ch;
}
.page-about .tl__year {
  margin: 0 0 .35rem;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 4.6vw, 1.9rem);
  line-height: 1;
  letter-spacing: .04em;
  color: var(--gold);
}
.page-about .tl__title {
  margin: 0 0 .6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.1rem, 3.2vw, 1.45rem);
  line-height: 1.36;
  color: var(--paper);
}
.page-about .tl__text {
  margin: 0 0 .7rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--paper-dim);
}
.page-about .tl__body .archive-code {
  margin: 0;
}

/* ---- 内容团队 ---- */
.page-about .about-crew {
  padding-block: var(--section-pad);
}
.page-about .crew__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 3rem);
  align-items: center;
}
.page-about .crew__title {
  margin: .5rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 4.4vw, 2.5rem);
  line-height: 1.22;
  color: var(--paper);
}
.page-about .crew__lead {
  margin: 1rem 0 .9rem;
  max-width: 46ch;
  color: var(--paper-dim);
  line-height: 1.8;
}

.page-about .crew__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 1.5rem;
}
.page-about .crew__tabs a {
  display: inline-block;
  padding: .42rem .95rem;
  border-radius: var(--radius);
  background: var(--ink-3);
  border: 1px solid var(--edge);
  font-size: .84rem;
  color: var(--patina-light);
  text-decoration: none;
  transition: color .24s var(--ease), background-color .24s var(--ease);
}
.page-about .crew__tabs a:hover,
.page-about .crew__tabs a:focus-visible {
  color: var(--ink);
  background: var(--gold-bright);
  border-color: var(--gold-bright);
}

.page-about .crew__cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 2.75rem);
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
}
.page-about .crew__col {
  padding-top: 1.1rem;
  border-top: 1px solid var(--edge-soft);
}
.page-about .crew__col .tag {
  display: inline-block;
  margin-bottom: .75rem;
}
.page-about .crew__col h3 {
  margin: 0 0 .6rem;
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}
.page-about .crew__col p {
  margin: 0;
  color: var(--paper-dim);
  line-height: 1.8;
  font-size: .97rem;
}
.page-about .crew__col:nth-child(1) h3 { font-size: clamp(1.25rem, 3.6vw, 1.7rem); }
.page-about .crew__col:nth-child(2) h3 { font-size: clamp(1.12rem, 3.1vw, 1.42rem); }
.page-about .crew__col:nth-child(3) h3 { font-size: clamp(1.02rem, 2.8vw, 1.26rem); }

/* ---- 编号与节奏 ---- */
.page-about .about-codex {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--edge-soft);
}
.page-about .codex__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 3.25rem);
}
.page-about .codex__aside {
  border-left: 2px solid var(--patina);
  padding-left: 1.1rem;
}
.page-about .codex__aside-p {
  margin: .75rem 0 0;
  color: var(--paper-dim);
  line-height: 1.8;
  font-size: .96rem;
  max-width: 40ch;
}
.page-about .codex__title {
  margin: 0 0 clamp(1.5rem, 4vw, 2.25rem);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.2vw, 2.35rem);
  line-height: 1.24;
  color: var(--paper);
}
.page-about .codex__blocks {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.35rem, 3.5vw, 2rem);
}
.page-about .codex__block {
  padding-top: .9rem;
  border-top: 1px solid var(--edge);
}
.page-about .codex__block h3 {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.8vw, 1.24rem);
  line-height: 1.4;
  color: var(--gold-bright);
}
.page-about .codex__block p {
  margin: 0;
  color: var(--paper-dim);
  line-height: 1.8;
  font-size: .96rem;
}
.page-about .codex__callout {
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}
.page-about .codex__callout p {
  margin: 0;
  color: var(--paper);
  line-height: 1.8;
}
.page-about .codex__callout a {
  color: var(--gold-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---- 厅别对接 ---- */
.page-about .about-partners {
  padding-block: var(--section-pad);
}
.page-about .partners__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 3.25rem);
  align-items: start;
}
.page-about .partners__title {
  margin: .5rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 4.1vw, 2.3rem);
  line-height: 1.26;
  color: var(--paper);
}
.page-about .partners__text p {
  margin: 0 0 1rem;
  color: var(--paper-dim);
  line-height: 1.82;
  max-width: 56ch;
}
.page-about .partners__text .archive-code {
  margin-top: 1.4rem;
}
.page-about .partners__media {
  max-width: 30rem;
}

/* ---- 公开评价 ---- */
.page-about .about-honor {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--edge-soft);
}
.page-about .honor__title {
  margin: .5rem 0 .9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.2vw, 2.4rem);
  line-height: 1.24;
  color: var(--paper);
}
.page-about .honor__lead {
  margin: 0;
  max-width: 52ch;
  color: var(--paper-dim);
  line-height: 1.82;
}
.page-about .honor__stack {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  margin-top: clamp(1.75rem, 5vw, 2.75rem);
}
.page-about .honor__card {
  padding: 1.35rem 1.4rem 1.5rem;
  background: var(--ink-2);
  border-radius: var(--radius);
  box-shadow: 0 18px 40px -32px rgba(0, 0, 0, .9);
  border-top: 2px solid var(--gold-deep);
}
.page-about .honor__card-year {
  margin: 0 0 .5rem;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 4.2vw, 1.8rem);
  line-height: 1;
  letter-spacing: .04em;
  color: var(--gold);
}
.page-about .honor__card-title {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.08rem;
  line-height: 1.4;
  color: var(--paper);
}
.page-about .honor__card-text {
  margin: 0;
  color: var(--note);
  line-height: 1.78;
  font-size: .94rem;
}

/* ---- 长期做法 ---- */
.page-about .about-practice {
  padding-block: var(--section-pad);
  background: var(--ink-2);
}
.page-about .practice__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 3.25rem);
}
.page-about .practice__title {
  margin: .5rem 0 .9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.2vw, 2.35rem);
  line-height: 1.24;
  color: var(--paper);
}
.page-about .practice__lead {
  margin: 0;
  max-width: 42ch;
  color: var(--paper-dim);
  line-height: 1.82;
}
.page-about .practice__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.1rem);
}
.page-about .practice__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.1rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--edge);
}
.page-about .practice__no {
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: .06em;
  color: var(--patina-light);
  padding-top: .2rem;
}
.page-about .practice__body h3 {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.08rem, 3vw, 1.3rem);
  line-height: 1.4;
  color: var(--paper);
}
.page-about .practice__body p {
  margin: 0;
  color: var(--paper-dim);
  line-height: 1.82;
  font-size: .96rem;
}
.page-about .practice__body a {
  color: var(--gold-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---- 尾注 ---- */
.page-about .about-cta {
  padding-block: clamp(2.25rem, 6vw, 4rem);
}
.page-about .about-cta__inner {
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  border-top: 1px solid var(--gold-deep);
}
.page-about .about-cta__title {
  margin: .5rem 0 .9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 4.2vw, 2.25rem);
  line-height: 1.26;
  color: var(--paper);
}
.page-about .about-cta__text {
  margin: 0 0 1.5rem;
  max-width: 54ch;
  color: var(--paper-dim);
  line-height: 1.82;
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-bottom: 1.5rem;
}
.page-about .about-cta__code {
  margin: 0;
}

/* ============ 平板 ============ */
@media (min-width: 700px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .honor__stack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .honor__card--c {
    grid-column: 1 / -1;
  }
  .page-about .codex__blocks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .codex__block:first-child {
    grid-column: 1 / -1;
  }
}

/* ============ 桌面 ============ */
@media (min-width: 900px) {

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .82fr);
    align-items: end;
    gap: clamp(2rem, 5vw, 4.5rem);
  }
  .page-about .about-hero__facts {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    border-top: 0;
    padding-top: 0;
    transform: translateY(clamp(0rem, 2.5vw, 2rem));
  }
  .page-about .about-fact {
    flex-direction: row;
    align-items: baseline;
    gap: .85rem;
    padding-block: .95rem;
    border-bottom: 1px solid var(--edge-soft);
  }
  .page-about .about-fact:first-child {
    border-top: 1px solid var(--edge);
  }

  .page-about .tl-head {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
    gap: clamp(2rem, 5vw, 4rem);
  }

  /* 时间轴：轴线居中，条目左右交替 */
  .page-about .tl {
    padding-left: 0;
    border-left: 0;
  }
  .page-about .tl::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    transform: translateX(-.5px);
    background: linear-gradient(180deg, transparent, var(--edge) 6%, var(--edge) 94%, transparent);
  }
  .page-about .tl__item {
    width: calc(50% - var(--tl-gap));
    padding-bottom: clamp(2.25rem, 5vw, 3.5rem);
  }
  .page-about .tl__item:nth-child(odd) {
    margin-right: auto;
    text-align: right;
  }
  .page-about .tl__item:nth-child(odd) .tl__body {
    margin-left: auto;
  }
  .page-about .tl__item:nth-child(even) {
    margin-left: auto;
  }
  .page-about .tl__item:nth-child(odd) .tl__node {
    left: auto;
    right: calc(-1 * var(--tl-gap) - (var(--tl-node) / 2));
  }
  .page-about .tl__item:nth-child(even) .tl__node {
    left: calc(-1 * var(--tl-gap) - (var(--tl-node) / 2));
  }

  .page-about .crew__top {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  }
  .page-about .crew__tabs {
    display: none;
  }
  .page-about .crew__cols {
    grid-template-columns: 1.12fr 1fr .88fr;
    align-items: start;
    gap: clamp(1.75rem, 4vw, 3.25rem);
  }

  .page-about .codex__grid {
    grid-template-columns: minmax(0, .65fr) minmax(0, 1.35fr);
    gap: clamp(2rem, 5vw, 4rem);
  }
  .page-about .codex__blocks {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .codex__block:first-child {
    grid-column: auto;
  }

  .page-about .partners__grid {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-about .honor__head {
    max-width: 58ch;
  }
  .page-about .honor__stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
  .page-about .honor__card--a {
    transform: translateY(clamp(1rem, 2.5vw, 2.25rem));
  }
  .page-about .honor__card--c {
    grid-column: auto;
    transform: translateY(clamp(2rem, 4.5vw, 3.75rem));
    border-top-color: var(--patina);
  }

  .page-about .practice__grid {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    gap: clamp(2rem, 5vw, 4rem);
  }
  .page-about .practice__head {
    position: sticky;
    top: 6rem;
    align-self: start;
  }
}

/* ============ 大屏 ============ */
@media (min-width: 1200px) {
  .page-about .about-hero__main .display {
    max-width: 16ch;
  }
  .page-about .honor__card {
    padding: 1.6rem 1.6rem 1.75rem;
  }
}

/* ============ 动效克制 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-rail__bar {
    transition: none;
  }
  .page-about .honor__card,
  .page-about .practice__head {
    transform: none !important;
  }
}
<<<END>>>