/* =========================================================
   品牌自述 /who-we-are/
   页面作用域：.page-about
   ========================================================= */

.page-about {
  --about-hair: rgba(42, 50, 59, 0.72);
  --about-grid: rgba(42, 50, 59, 0.24);
  display: block;
  background-color: var(--ink);
  color: var(--silver);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.page-about .breadcrumb {
  padding-top: calc(var(--baseline) * 3);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: calc(var(--baseline) * 4) 0 calc(var(--baseline) * 9);
  border-bottom: 1px solid var(--about-hair);
  background-image:
    linear-gradient(var(--about-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 12, 15, 0.30), rgba(10, 12, 15, 0.90) 76%, var(--ink));
  pointer-events: none;
}

.page-about .about-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--baseline) * 5);
  align-items: start;
}

.page-about .about-hero__eyebrow {
  margin: 0 0 14px;
  font-size: var(--fs-12);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-hero__title {
  margin: 0 0 calc(var(--baseline) * 2.5);
  font-family: var(--font-head);
  font-size: clamp(30px, 7vw, 58px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: #EDF1F5;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 54ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--fog);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: calc(var(--baseline) * 4) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--panel);
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 600;
  line-height: 1.05;
  color: var(--gold);
}

.page-about .about-stat__label {
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--fog);
}

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

.page-about .about-hero__figure .figure__media {
  aspect-ratio: 3 / 2;
  overflow: hidden;
}

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: calc(var(--baseline) * 6) 0 calc(var(--baseline) * 11);
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: calc(var(--baseline) * 7);
  }

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

  .page-about .about-hero__figure::before {
    content: "";
    position: absolute;
    inset: -12px -12px 12px 12px;
    border: 1px solid var(--line);
    pointer-events: none;
  }
}

/* ---------- 章节通用 ---------- */

.page-about .section__head {
  max-width: 62ch;
}

.page-about .section__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-44);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.02em;
  color: rgba(232, 178, 58, 0.34);
}

.page-about .section__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: clamp(24px, 4.4vw, 38px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.012em;
  color: #EDF1F5;
}

.page-about .section__lede {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--fog);
}

.page-about .about-flow,
.page-about .about-timeline,
.page-about .about-team,
.page-about .about-partners,
.page-about .about-standard {
  padding-block: calc(var(--baseline) * 8);
}

/* ---------- 01 每天在做的事 ---------- */

.page-about .about-flow__lanes {
  margin-top: calc(var(--baseline) * 4);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .about-lane {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: calc(var(--baseline) * 3);
  background: var(--panel);
  transition: background-color 180ms ease;
}

.page-about .about-lane:hover {
  background: var(--graphite);
}

.page-about .about-lane__idx {
  width: fit-content;
  padding: 2px 9px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  color: var(--cyan);
  border: 1px solid rgba(53, 218, 209, 0.34);
}

.page-about .about-lane__title {
  margin: 0;
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.35;
  color: #E4E9EE;
}

.page-about .about-lane__text {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--fog);
}

@media (min-width: 860px) {
  .page-about .about-flow__lanes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 衬线强调句 ---------- */

.page-about .about-quote {
  max-width: 26ch;
  margin: calc(var(--baseline) * 6) 0 0;
  padding-left: calc(var(--baseline) * 3);
  border-left: 2px solid var(--gold);
  font-family: var(--font-serif);
  font-size: clamp(20px, 4vw, 32px);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.005em;
  color: #E4E9EE;
}

/* ---------- 02 运营阶段 ---------- */

.page-about .about-timeline__grid {
  margin-top: calc(var(--baseline) * 4);
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--baseline) * 5);
  align-items: start;
}

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

.page-about .about-node {
  position: relative;
  padding-left: 34px;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-node:first-child {
  border-top: 1px solid var(--about-hair);
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  width: 9px;
  height: 9px;
  background: var(--ink);
  border: 1px solid var(--gold-soft);
  transition: background-color 180ms ease, border-color 180ms ease;
}

.page-about .about-node::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 35px;
  bottom: -1px;
  width: 1px;
  background: var(--line);
}

.page-about .about-node:last-child::after {
  display: none;
}

.page-about .about-node:has(details[open])::before {
  background: var(--gold);
  border-color: var(--gold);
}

.page-about .about-node__summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 0 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-node__idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .about-node__stage {
  flex: 1 1 auto;
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.4;
  color: #E4E9EE;
  transition: color 180ms ease;
}

.page-about .about-node__summary:hover .about-node__stage,
.page-about .about-node__summary:focus-visible .about-node__stage {
  color: var(--cyan);
}

.page-about .about-node__toggle {
  flex: 0 0 auto;
  align-self: center;
  width: 8px;
  height: 8px;
  margin-top: -5px;
  border-right: 1px solid var(--fog-dim);
  border-bottom: 1px solid var(--fog-dim);
  transform: rotate(45deg);
  transition: transform 180ms ease, border-color 180ms ease;
}

.page-about .about-node details[open] .about-node__toggle {
  transform: rotate(-135deg);
  margin-top: 2px;
  border-color: var(--cyan);
}

.page-about .about-node__body {
  padding: 0 0 calc(var(--baseline) * 3);
  max-width: 58ch;
}

.page-about .about-node__body p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.9;
  color: var(--fog);
}

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

.page-about .about-timeline__figure .figure__media {
  aspect-ratio: 5 / 7;
  overflow: hidden;
}

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

@media (min-width: 960px) {
  .page-about .about-timeline__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.66fr);
    gap: calc(var(--baseline) * 8);
  }

  .page-about .about-timeline__figure {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    max-width: 420px;
    margin-left: auto;
  }
}

/* ---------- 03 团队分工 ---------- */

.page-about .about-team__cards {
  margin-top: calc(var(--baseline) * 4);
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--baseline) * 2);
}

.page-about .about-team__card {
  position: relative;
  padding: calc(var(--baseline) * 3);
  background: var(--panel);
  border: 1px solid var(--line);
  outline: none;
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.page-about .about-team__card:hover,
.page-about .about-team__card:focus-visible {
  border-color: var(--cyan);
  background: var(--graphite);
  transform: translateY(-2px);
}

.page-about .about-team__count {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-44);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-about .about-team__count span {
  margin-left: 5px;
  font-size: var(--fs-14);
  font-weight: 400;
  color: var(--fog);
}

.page-about .about-team__name {
  margin: 0 0 10px;
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.35;
  color: #E4E9EE;
}

.page-about .about-team__duty {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--fog);
}

.page-about .about-team__figure {
  max-width: 720px;
  margin: calc(var(--baseline) * 6) auto 0;
}

.page-about .about-team__figure .figure__media {
  aspect-ratio: 11 / 7;
  overflow: hidden;
}

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

@media (min-width: 800px) {
  .page-about .about-team__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__card:hover,
  .page-about .about-team__card:focus-visible {
    transform: none;
  }
}

/* ---------- 04 合作共建 ---------- */

.page-about .about-partners__grid {
  margin-top: calc(var(--baseline) * 4);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .about-partner {
  padding: calc(var(--baseline) * 3);
  background: var(--ink);
  border-left: 2px solid transparent;
  transition: border-color 180ms ease, background-color 180ms ease;
}

.page-about .about-partner:hover {
  border-left-color: var(--gold);
  background: var(--panel);
}

.page-about .about-partner__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--fog-dim);
}

.page-about .about-partner__title {
  margin: 0 0 10px;
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.35;
  color: #E4E9EE;
}

.page-about .about-partner__text {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--fog);
}

@media (min-width: 700px) {
  .page-about .about-partners__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 05 服务规矩 ---------- */

.page-about .about-standard__log {
  margin: calc(var(--baseline) * 4) 0 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-standard__log .log__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-standard__log .log__key {
  font-size: var(--fs-16);
  color: var(--silver);
}

.page-about .about-standard__log .log__val {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.02em;
  color: var(--gold);
}

@media (min-width: 720px) {
  .page-about .about-standard__log .log__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    gap: 24px;
  }

  .page-about .about-standard__log .log__val {
    text-align: right;
  }
}

/* ---------- 下一步 ---------- */

.page-about .about-next {
  margin-top: calc(var(--baseline) * 4);
  padding-block: calc(var(--baseline) * 6);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel), var(--ink));
}

.page-about .about-next__inner {
  display: flex;
  flex-direction: column;
  gap: calc(var(--baseline) * 3);
}

.page-about .about-next__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 3.6vw, 30px);
  font-weight: 800;
  letter-spacing: -0.012em;
  color: #EDF1F5;
}

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

@media (min-width: 760px) {
  .page-about .about-next__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}
<<<END>>>
</<PAGE_CSS>>>