/* ===== 品牌愿景页 /mission/ ===== */

.page-about {
  padding-bottom: 0;
  overflow-x: hidden;
}

/* --- 面包屑 --- */
.page-about .breadcrumb {
  padding: 24px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}
.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--dim);
}
.page-about .breadcrumb li + li::before {
  content: "/";
  margin: 0 8px;
  color: var(--line);
}
.page-about .breadcrumb a {
  color: var(--silver);
  text-decoration: none;
}
.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--cyan);
}
.page-about .breadcrumb li[aria-current="page"] {
  color: var(--white);
}

/* --- 首屏 --- */
.page-about .intro {
  padding-top: 34px;
}
.page-about .intro .eyebrow {
  color: var(--cyan);
}
.page-about .intro__title {
  margin: 16px 0 0;
  max-width: 19em;
  font-family: var(--font-sans);
  font-size: clamp(27px, 5.6vw, 52px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--white);
}
.page-about .intro__lede {
  margin: 22px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--silver);
}
.page-about .intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-about .intro__index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}
.page-about .intro__index a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(18, 32, 54, .5);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--silver);
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease;
}
.page-about .intro__index a:hover,
.page-about .intro__index a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}
.page-about .intro__index .idx {
  font-weight: 700;
  color: var(--orange);
}

/* --- 首屏主图 --- */
.page-about .hero-figure {
  margin: 42px 0 0;
}
.page-about .hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  filter: saturate(.55) contrast(1.06) brightness(.82);
  object-fit: cover;
}
.page-about .hero-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--dim);
}

/* --- 章节骨架 --- */
.page-about .flow {
  padding-top: 44px;
}
.page-about .chapter {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 26px 0 42px;
  border-top: 1px solid var(--line);
}
.page-about .chapter__rail {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}
.page-about .chapter__num {
  font-family: var(--font-cond);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--cyan);
}
.page-about .chapter__note {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--dim);
}
.page-about .chapter__title {
  margin: 0 0 18px;
  font-family: var(--font-sans);
  font-size: clamp(21px, 3.6vw, 30px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
}
.page-about .chapter__body > p {
  margin: 0 0 15px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--silver);
}
.page-about .chapter__tail {
  margin-top: 22px !important;
  padding-left: 14px;
  border-left: 2px solid var(--teal);
  color: var(--silver);
}
.page-about .chapter__tail a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 208, .4);
}
.page-about .chapter__tail a:hover,
.page-about .chapter__tail a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* --- 数据停顿条 --- */
.page-about .stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(128px, 1fr));
  gap: 1px;
  margin-top: 26px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--line-soft);
  overflow: hidden;
}
.page-about .stat-strip__item {
  padding: 16px 14px 18px;
  background: rgba(18, 32, 54, .72);
}
.page-about .stat-strip__num {
  display: block;
  font-family: var(--font-cond);
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--orange);
}
.page-about .stat-strip__item:nth-child(2) .stat-strip__num {
  color: var(--white);
}
.page-about .stat-strip__item:nth-child(3) .stat-strip__num {
  color: var(--cyan);
}
.page-about .stat-strip__k {
  display: block;
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--silver);
}

/* --- 三条内容主线 --- */
.page-about .chapter__figure {
  margin: 4px 0 24px;
}
.page-about .chapter__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  filter: saturate(.5) contrast(1.05) brightness(.78);
  object-fit: cover;
}
.page-about .lanes {
  display: grid;
  gap: 16px;
  margin-top: 6px;
}
.page-about .lane {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18, 32, 54, .92), rgba(10, 20, 36, .68));
}
.page-about .lane:nth-child(2) {
  border-top-color: var(--orange);
}
.page-about .lane:nth-child(3) {
  border-top-color: var(--gold);
}
.page-about .lane__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
}
.page-about .lane:nth-child(2) .lane__tag {
  color: var(--orange);
}
.page-about .lane:nth-child(3) .lane__tag {
  color: var(--gold);
}
.page-about .lane__title {
  margin: 10px 0 12px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--white);
}
.page-about .lane p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--silver);
}
.page-about .lane__facts {
  margin: 15px 0 0;
  padding: 12px 0 0;
  border-top: 1px dashed var(--line-soft);
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.95;
  letter-spacing: .03em;
  color: var(--silver);
}
.page-about .lane__facts li::before {
  content: "·";
  margin-right: 8px;
  color: var(--cyan);
}

/* --- 团队 --- */
.page-about .crew-layout {
  display: grid;
  gap: 22px;
  margin-top: 22px;
}
.page-about .crew-layout__fig {
  margin: 0;
}
.page-about .crew-layout__fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  filter: saturate(.5) brightness(.8) contrast(1.05);
  object-fit: cover;
}
.page-about .crew {
  display: grid;
  gap: 12px;
}
.page-about .crew__cell {
  position: relative;
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  border-radius: var(--radius);
  background: rgba(18, 32, 54, .55);
  transition: border-color .22s ease, background .22s ease;
}
.page-about .crew__cell:hover,
.page-about .crew__cell:focus-within,
.page-about .crew__cell:focus {
  border-left-color: var(--cyan);
  background: rgba(18, 32, 54, .85);
  outline: none;
}
.page-about .crew__name {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--white);
}
.page-about .crew__cell:hover .crew__name,
.page-about .crew__cell:focus-within .crew__name {
  color: var(--cyan);
}
.page-about .crew__base {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--silver);
}
.page-about .crew__more {
  overflow: hidden;
  max-height: none;
  opacity: 1;
}
.page-about .crew__more p {
  margin: 10px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line-soft);
  font-size: 13px;
  line-height: 1.75;
  color: var(--dim);
}

/* --- 发展节点 --- */
.page-about .timeline {
  position: relative;
  margin: 24px 0 0;
  padding: 0 0 0 26px;
  list-style: none;
}
.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--line) 62%, transparent);
}
.page-about .tl {
  position: relative;
  margin-bottom: 14px;
}
.page-about .tl::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 20px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  background: var(--ink);
}
.page-about .tl__item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 20, 36, .7);
}
.page-about .tl__item[open] {
  border-color: rgba(63, 224, 208, .45);
}
.page-about .tl__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 16px;
  list-style: none;
  cursor: pointer;
  outline-offset: 3px;
}
.page-about .tl__summary::-webkit-details-marker {
  display: none;
}
.page-about .tl__summary:focus-visible {
  outline: 2px solid var(--cyan);
  border-radius: var(--radius);
}
.page-about .tl__year {
  flex: none;
  font-family: var(--font-cond);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--orange);
}
.page-about .tl__name {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
}
.page-about .tl__item[open] .tl__name {
  color: var(--cyan);
}
.page-about .tl__chev {
  flex: none;
  width: 9px;
  height: 9px;
  margin-left: auto;
  border-right: 1.5px solid var(--cyan);
  border-bottom: 1.5px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform .25s ease;
}
.page-about .tl__item[open] .tl__chev {
  transform: rotate(-135deg);
}
.page-about .tl__panel {
  padding: 0 16px 18px;
}
.page-about .tl__panel p {
  margin: 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--silver);
}

/* --- 合作生态 --- */
.page-about .coop {
  display: grid;
  gap: 1px;
  margin-top: 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--line-soft);
  overflow: hidden;
}
.page-about .coop__row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 6px 14px;
  padding: 18px 16px 20px;
  background: rgba(10, 20, 36, .82);
}
.page-about .coop__idx {
  grid-row: span 2;
  font-family: var(--font-cond);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}
.page-about .coop__title {
  margin: 0;
  font-size: 16.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--white);
}
.page-about .coop__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--silver);
}

/* --- 服务准则 --- */
.page-about .promise {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}
.page-about .promise__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 14px 0 16px;
  border-bottom: 1px dashed var(--line-soft);
}
.page-about .promise__item:first-child {
  border-top: 1px dashed var(--line-soft);
}
.page-about .promise__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
}
.page-about .promise__v {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

/* --- 收尾 --- */
.page-about .outro {
  margin-top: 6px;
  padding-top: 40px;
  padding-bottom: 78px;
  border-top: 2px solid var(--line);
  background: linear-gradient(180deg, rgba(63, 224, 208, .07), rgba(5, 11, 20, 0) 70%);
}
.page-about .outro .eyebrow {
  color: var(--orange);
}
.page-about .outro__title {
  margin: 12px 0 0;
  font-size: clamp(22px, 3.8vw, 32px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
}
.page-about .outro__text {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--silver);
}
.page-about .outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ===== 平板与桌面 ===== */
@media (min-width: 860px) {
  .page-about .chapter {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 38px;
    padding: 34px 0 56px;
  }
  .page-about .chapter__rail {
    align-items: center;
    gap: 14px;
  }
  .page-about .chapter__num {
    writing-mode: vertical-rl;
    font-size: 40px;
    letter-spacing: .16em;
  }
  .page-about .chapter__note {
    writing-mode: vertical-rl;
    letter-spacing: .28em;
  }

  .page-about .lanes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    align-items: stretch;
  }

  .page-about .crew-layout {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }
  .page-about .crew {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
  .page-about .crew__cell:nth-child(2),
  .page-about .crew__cell:nth-child(4) {
    transform: translateY(16px);
  }

  .page-about .coop__row {
    grid-template-columns: 40px 170px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
    padding: 20px 20px 22px;
  }
  .page-about .coop__idx {
    grid-row: auto;
  }

  .page-about .promise__item {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
    padding: 16px 0 18px;
  }

  .page-about .stat-strip__num {
    font-size: 46px;
  }
}

@media (min-width: 1080px) {
  .page-about .crew-layout {
    grid-template-columns: 340px minmax(0, 1fr);
  }
  .page-about .tl__year {
    font-size: 30px;
  }
}

/* 悬停展开：仅在支持悬停的桌面端收起来 */
@media (hover: hover) and (min-width: 860px) {
  .page-about .crew__more {
    max-height: 0;
    opacity: 0;
    transition: max-height .32s ease, opacity .28s ease;
  }
  .page-about .crew__cell:hover .crew__more,
  .page-about .crew__cell:focus-within .crew__more,
  .page-about .crew__cell:focus .crew__more {
    max-height: 220px;
    opacity: 1;
  }
}
<<<END>>>