/* ===== 看台团队页 ===== */
.page-about {
  --about-title: #E9F6F1;
  --about-dim: #86AEA2;
  --about-hair: rgba(74, 107, 98, 0.42);
}

/* ---------- 页首 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(26px, 5vw, 62px) clamp(20px, 3.4vw, 44px);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: var(--gutter);
  right: var(--gutter);
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), rgba(53, 240, 192, 0.06) 78%);
}

.page-about .about-hero .eyebrow {
  margin-top: clamp(16px, 2.4vw, 26px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-about .about-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(30px, 6.4vw, 68px);
  line-height: 1.12;
  letter-spacing: -0.022em;
  color: var(--about-title);
}

.page-about .about-hero__lead {
  margin: clamp(16px, 2.6vw, 26px) 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-hero__figs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: clamp(22px, 3.4vw, 36px);
  border-top: 1px solid var(--about-hair);
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-hero__fig {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 14px 16px 0;
  border-left: 1px solid var(--about-hair);
}

.page-about .about-hero__fig:nth-child(odd) {
  border-left: 0;
}

.page-about .about-hero__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(30px, 9vw, 50px);
  line-height: 0.95;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-about .about-hero__num small {
  margin-left: 3px;
  font-size: 0.34em;
  font-weight: 600;
  color: var(--mist);
}

.page-about .about-hero__lbl {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--about-dim);
}

@media (min-width: 760px) {
  .page-about .about-hero__figs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-hero__fig {
    padding-left: 18px;
  }
  .page-about .about-hero__fig:nth-child(odd) {
    border-left: 1px solid var(--about-hair);
  }
  .page-about .about-hero__fig:first-child {
    border-left: 0;
    padding-left: 0;
  }
}

/* ---------- 左轨 + 主内容 ---------- */
.page-about .rail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 34px);
  padding-block: clamp(22px, 4vw, 52px) clamp(52px, 8vw, 104px);
}

.page-about .rail {
  position: relative;
}

.page-about .rail__caption {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--about-dim);
}

.page-about .rail__stops {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .rail__stop {
  position: relative;
  flex: 0 0 auto;
  padding: 8px 12px;
  background: var(--panel);
  border: 1px solid var(--about-hair);
  clip-path: var(--cut-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--about-dim);
  white-space: nowrap;
}

.page-about .rail__label {
  display: inline;
}

.page-about .rail__value {
  display: inline;
  margin-left: 7px;
  font-size: 10px;
  color: var(--line);
}

@media (min-width: 1040px) {
  .page-about .rail-layout {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: clamp(28px, 4.5vw, 60px);
    align-items: start;
  }

  .page-about .rail {
    position: sticky;
    top: 108px;
  }

  .page-about .rail__stops {
    flex-direction: column;
    gap: 0;
    padding: 0;
    overflow: visible;
    border-left: 1px solid var(--about-hair);
  }

  .page-about .rail__stop {
    padding: 11px 0 11px 18px;
    background: none;
    border: 0;
    clip-path: none;
    white-space: normal;
    transition: color 0.25s ease;
  }

  .page-about .rail__stop::before {
    content: "";
    position: absolute;
    left: -3.5px;
    top: 16px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--line);
    transition: background 0.25s ease, box-shadow 0.25s ease;
  }

  .page-about .rail__stop.is-current {
    color: var(--cyan);
  }

  .page-about .rail__stop.is-current::before {
    background: var(--amber);
    box-shadow: 0 0 0 4px rgba(255, 194, 75, 0.18);
  }

  .page-about .rail__label {
    display: block;
  }

  .page-about .rail__value {
    display: block;
    margin: 3px 0 0;
    font-size: 10px;
  }
}

/* ---------- 内容块 ---------- */
.page-about .about-block {
  position: relative;
  padding-block: clamp(28px, 4.6vw, 62px);
}

.page-about .about-block:first-child {
  padding-top: 0;
}

.page-about .about-block + .about-block {
  border-top: 1px solid var(--about-hair);
}

@media (min-width: 1040px) {
  .page-about .about-block + .about-block {
    padding-left: clamp(16px, 4vw, 56px);
  }
}

.page-about .about-block__head {
  margin-bottom: clamp(16px, 2.6vw, 30px);
}

.page-about .about-block__head .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-about .about-block h2 {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(24px, 3.8vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.022em;
  color: var(--about-title);
}

.page-about .about-block__note {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-block__body p {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-about .about-block a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 01 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.4vw, 40px);
}

.page-about .about-roles {
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
  border-left: 2px solid var(--cyan);
}

.page-about .about-roles li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 13px 0 13px 16px;
}

.page-about .about-roles li + li {
  border-top: 1px solid var(--about-hair);
}

.page-about .about-roles__role {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.07em;
  color: var(--cyan);
}

.page-about .about-roles__desc {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .about-team__figure {
  margin: 0;
}

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

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: clamp(28px, 4.4vw, 56px);
    align-items: start;
  }

  .page-about .about-team__figure {
    margin-top: clamp(14px, 3vw, 42px);
  }
}

/* ---------- 02 流程 ---------- */
.page-about .about-flow {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-about .about-flow__step {
  position: relative;
  padding-left: 38px;
}

.page-about .about-flow__step::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(53, 240, 192, 0.08));
}

.page-about .about-flow__step:last-child::before {
  bottom: 50%;
}

.page-about .about-flow__step::after {
  content: "";
  position: absolute;
  left: 5.5px;
  top: 22px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--amber);
}

.page-about .about-flow__detail[open] > .about-flow__sum ~ .about-flow__panel {
  animation: about-flow-in 0.28s ease both;
}

@keyframes about-flow-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-about .about-flow__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 15px 0 13px;
  cursor: pointer;
  list-style: none;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-flow__sum::-webkit-details-marker {
  display: none;
}

.page-about .about-flow__sum::marker {
  content: "";
}

.page-about .about-flow__idx {
  min-width: 26px;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 22px;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-flow__name {
  font-size: 17px;
  font-weight: 700;
  color: var(--about-title);
  transition: color 0.22s ease;
}

.page-about .about-flow__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--about-dim);
}

.page-about .about-flow__detail[open] .about-flow__name {
  color: var(--cyan);
}

.page-about .about-flow__detail[open] .about-flow__sum {
  border-bottom-color: rgba(53, 240, 192, 0.45);
}

.page-about .about-flow__panel {
  padding: 14px 0 18px;
}

.page-about .about-flow__panel p {
  margin: 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

@media (hover: hover) {
  .page-about .about-flow__sum:hover .about-flow__name {
    color: var(--cyan);
  }
}

/* ---------- 03 覆盖范围 ---------- */
.page-about .about-coverage {
  position: relative;
}

.page-about .about-coverage__map {
  position: absolute;
  top: 4px;
  right: 0;
  width: min(38%, 240px);
  height: auto;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-coverage .about-block__head,
.page-about .about-coverage .filter-bar,
.page-about .about-coverage .about-cover,
.page-about .about-coverage .about-coverage__figure,
.page-about .about-coverage .about-coverage__foot {
  position: relative;
  z-index: 1;
}

.page-about .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(14px, 2.2vw, 22px);
}

.page-about .filter-btn {
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  background: var(--panel);
  border: 1px solid var(--about-hair);
  clip-path: var(--cut-sm);
  cursor: pointer;
  transition: background 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}

.page-about .filter-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-about .filter-btn[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-about .about-cover {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 0 0 clamp(22px, 3.4vw, 36px);
  padding: 0;
  list-style: none;
}

.page-about .about-cover__item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-cover__city {
  flex: 0 0 58px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-about .about-cover__name {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  color: var(--about-title);
}

.page-about .about-cover__type {
  flex: 0 0 auto;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--about-dim);
  border: 1px solid var(--about-hair);
}

.page-about .about-coverage__figure {
  margin: 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-coverage__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 30, 25, 0.15), rgba(7, 21, 18, 0.72));
  pointer-events: none;
}

.page-about .about-coverage__foot {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

@media (min-width: 680px) {
  .page-about .about-cover {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 52px);
  }
}

@media (min-width: 1100px) {
  .page-about .about-cover {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 04 时间轨 ---------- */
.page-about .about-tl {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--amber), var(--cyan) 58%, var(--line));
}

.page-about .about-tl__node {
  position: relative;
  padding: 0 0 clamp(22px, 3vw, 32px) 34px;
}

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

.page-about .about-tl__dot {
  position: absolute;
  left: 0;
  top: 8px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--amber);
  transition: box-shadow 0.28s ease;
}

.page-about .about-tl__node:nth-child(even) .about-tl__dot {
  border-color: var(--cyan);
}

.page-about .about-tl__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 16px;
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.page-about .about-tl__year {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 36px);
  line-height: 0.95;
  letter-spacing: 0.01em;
  color: var(--cyan);
}

.page-about .about-tl__title {
  color: var(--about-title);
  transition: color 0.24s ease;
}

.page-about .about-tl__text {
  margin: 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

@media (hover: hover) {
  .page-about .about-tl__node:hover .about-tl__dot {
    box-shadow: 0 0 0 6px rgba(255, 194, 75, 0.14);
  }
  .page-about .about-tl__node:hover .about-tl__title {
    color: var(--cyan);
  }
}

.page-about .about-timeline__figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
  position: relative;
}

.page-about .about-timeline__figure img {
  aspect-ratio: 1 / 1;
}

.page-about .about-timeline__figure .frame__cap {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--about-dim);
}

@media (min-width: 900px) {
  .page-about .about-timeline__figure {
    max-width: 62%;
  }
}

/* ---------- 05 协作 ---------- */
.page-about .about-partner__ways {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0 0 clamp(22px, 3.4vw, 34px);
}

.page-about .about-partner__way {
  padding: 18px 20px 20px;
  background: var(--panel);
  clip-path: var(--cut-tr);
}

.page-about .about-partner__way h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 16.5px;
  font-weight: 700;
  color: var(--about-title);
}

.page-about .about-partner__way p {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--mist);
}

.page-about .about-partner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-partner__more {
  margin: 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-dim);
}

@media (min-width: 760px) {
  .page-about .about-partner__ways {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(16px, 2.4vw, 26px);
    align-items: start;
  }

  .page-about .about-partner__way:nth-child(2) {
    margin-top: 26px;
  }

  .page-about .about-partner__way:nth-child(3) {
    margin-top: 52px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-flow__detail[open] > .about-flow__sum ~ .about-flow__panel {
    animation: none;
  }
  .page-about * {
    transition-duration: 0.01ms !important;
  }
}
<<<END>>>