.page-about {
  background: var(--ink);
  color: var(--fog);
}

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

.page-about .about-eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--violet);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 24px 0 64px;
  overflow: hidden;
  background:
    radial-gradient(780px 420px at 84% -14%, rgba(109, 74, 224, .42), transparent 68%),
    radial-gradient(620px 360px at 2% 6%, rgba(34, 211, 238, .16), transparent 64%),
    var(--ink);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(33, 58, 85, .35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(33, 58, 85, .35) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: .35;
  pointer-events: none;
}

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

.page-about .about-hero__grid {
  display: grid;
  gap: 32px;
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 8.4vw, 58px);
  line-height: 1.04;
  letter-spacing: -.01em;
  color: var(--fog);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--fog);
}

.page-about .about-hero__lede + .about-hero__lede {
  margin-top: 14px;
  color: var(--slate);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-facts {
  padding: 22px;
  background: linear-gradient(162deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.page-about .about-facts__list {
  margin: 16px 0 0;
  padding: 0;
}

.page-about .about-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.page-about .about-facts__row dt {
  margin: 0;
  font-size: 14px;
  color: var(--slate);
}

.page-about .about-facts__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--cyan);
  white-space: nowrap;
}

/* ---------- 通用章节头 ---------- */
.page-about .about-head {
  max-width: 66ch;
}

.page-about .about-head .section-title {
  font-size: clamp(26px, 5.4vw, 40px);
  line-height: 1.14;
  margin: 0;
}

.page-about .about-head .section-lede {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.78;
}

/* ---------- 图片位 ---------- */
.page-about .about-figure {
  margin: 30px 0 0;
}

.page-about .about-figure__media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

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

.page-about .about-figure__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(152deg, rgba(167, 139, 250, .22), rgba(34, 211, 238, .16) 58%, rgba(251, 146, 60, .12));
  mix-blend-mode: screen;
}

/* ---------- 时间线（奶油纸） ---------- */
.page-about .about-timeline {
  background: var(--paper);
  color: var(--brown);
  padding: 60px 0 68px;
}

.page-about .about-timeline .about-eyebrow {
  color: var(--violet-ink);
}

.page-about .about-timeline .section-title {
  color: var(--brown);
}

.page-about .about-timeline .section-lede {
  color: rgba(26, 20, 16, .78);
}

.page-about .about-timeline .about-figure__media {
  border-color: rgba(26, 20, 16, .18);
}

.page-about .about-tl {
  position: relative;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--violet-deep), var(--cyan) 56%, var(--orange));
  opacity: .6;
}

.page-about .about-tl__item {
  position: relative;
  padding-left: 38px;
  margin-bottom: 30px;
}

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

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 7px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--violet-deep);
  box-sizing: border-box;
}

.page-about .about-tl__item:focus-within::before {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(251, 146, 60, .28);
}

.page-about .about-tl__year {
  display: block;
  font-family: var(--font-serif);
  font-size: 26px;
  line-height: 1;
  color: var(--violet-ink);
  letter-spacing: .02em;
}

.page-about .about-tl__ver {
  display: inline-block;
  margin-top: 8px;
  padding: 3px 10px;
  border: 1px solid rgba(63, 42, 174, .35);
  border-radius: 999px;
  background: rgba(63, 42, 174, .06);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--violet-ink);
}

.page-about .about-tl__title {
  margin: 10px 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: .01em;
  color: var(--brown);
}

.page-about .about-tl__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(26, 20, 16, .82);
}

.page-about .about-tl__body a {
  color: var(--violet-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-tl__body a:hover {
  color: var(--violet-deep);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: 62px 0 68px;
  background: linear-gradient(180deg, var(--ink), var(--panel) 52%, var(--ink));
}

.page-about .about-team__grid {
  display: grid;
  gap: 34px;
  margin-top: 34px;
}

.page-about .about-donut {
  margin: 0;
  text-align: center;
}

.page-about .about-donut svg {
  display: block;
  width: min(300px, 76vw);
  height: auto;
  margin: 0 auto;
}

.page-about .about-donut__total {
  font-family: var(--font-mono);
  font-size: 27px;
  font-weight: 700;
  fill: var(--fog);
}

.page-about .about-donut__label {
  font-family: var(--font-body);
  font-size: 10.5px;
  letter-spacing: .16em;
  fill: var(--slate);
}

.page-about .about-donut .caption {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
}

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

.page-about .about-roles__item {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  gap: 0 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-roles__item:first-child {
  border-top: 1px solid var(--line-soft);
}

.page-about .about-roles__dot {
  width: 9px;
  height: 9px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--violet);
}

.page-about .about-roles__item:nth-child(2) .about-roles__dot {
  background: var(--violet-deep);
}

.page-about .about-roles__item:nth-child(3) .about-roles__dot {
  background: var(--cyan);
}

.page-about .about-roles__item:nth-child(4) .about-roles__dot {
  background: var(--orange);
}

.page-about .about-roles__item:nth-child(5) .about-roles__dot {
  background: var(--slate);
}

.page-about .about-roles__text {
  min-width: 0;
}

.page-about .about-roles__name {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .02em;
  color: var(--fog);
}

.page-about .about-roles__count {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 400;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-about .about-roles__desc {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--slate);
}

.page-about .about-team__note {
  margin: 30px 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--cyan);
  background: rgba(18, 35, 57, .62);
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 流程 ---------- */
.page-about .about-flow {
  padding: 62px 0 68px;
  background: var(--panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-steps {
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.page-about .about-steps__item {
  position: relative;
  padding: 22px 18px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(6, 16, 31, .42);
  transition: background .2s var(--ease), box-shadow .2s var(--ease);
}

.page-about .about-steps__item::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--violet), var(--cyan));
  opacity: .45;
  transition: opacity .2s var(--ease);
}

.page-about .about-steps__item:nth-child(3)::before {
  background: linear-gradient(90deg, var(--cyan), var(--cyan));
}

.page-about .about-steps__item:nth-child(4)::before {
  background: linear-gradient(90deg, var(--orange), var(--orange));
}

.page-about .about-steps__item:hover {
  background: var(--panel-2);
  box-shadow: inset 0 0 0 1px rgba(167, 139, 250, .32);
}

.page-about .about-steps__item:hover::before {
  opacity: 1;
}

.page-about .about-steps__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-about .about-steps__item h3 {
  margin: 10px 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18.5px;
  letter-spacing: .02em;
  color: var(--fog);
}

.page-about .about-steps__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--slate);
}

.page-about .about-figure--flow {
  margin-top: 34px;
}

/* ---------- 合作生态（奶油纸） ---------- */
.page-about .about-partners {
  background: var(--paper);
  color: var(--brown);
  padding: 60px 0 68px;
}

.page-about .about-partners .about-eyebrow {
  color: var(--violet-ink);
}

.page-about .about-partners .section-title {
  color: var(--brown);
}

.page-about .about-partners .section-lede {
  color: rgba(26, 20, 16, .78);
}

.page-about .about-partners__grid {
  display: grid;
  gap: 30px;
  margin-top: 32px;
}

.page-about .about-partners__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-about .about-partners__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 18px;
  align-items: start;
  padding: 18px;
  border: 1px solid rgba(26, 20, 16, .18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .34);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-partners__item:hover {
  transform: translateY(-2px);
  border-color: rgba(63, 42, 174, .4);
  box-shadow: 0 14px 26px -20px rgba(26, 20, 16, .8);
}

.page-about .about-partners__num {
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  color: var(--violet-ink);
}

.page-about .about-partners__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .02em;
  color: var(--brown);
}

.page-about .about-partners__item p {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(26, 20, 16, .78);
}

.page-about .about-figure--partners {
  margin: 0;
}

.page-about .about-figure--partners .about-figure__media {
  border-color: rgba(26, 20, 16, .18);
}

.page-about .about-honor {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid rgba(26, 20, 16, .18);
}

.page-about .about-honor__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .04em;
  color: var(--brown);
}

.page-about .about-honor__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .about-honor__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid rgba(26, 20, 16, .14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .28);
}

.page-about .about-honor__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--brown);
}

/* ---------- 夜场方法 ---------- */
.page-about .about-method {
  padding: 64px 0 68px;
  background:
    radial-gradient(720px 380px at 88% 0%, rgba(167, 139, 250, .22), transparent 66%),
    radial-gradient(560px 320px at 4% 100%, rgba(34, 211, 238, .14), transparent 68%),
    var(--ink);
}

.page-about .about-method__grid {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

.page-about .about-method__card {
  display: block;
  padding: 22px;
  color: var(--fog);
  text-decoration: none;
  background: linear-gradient(166deg, rgba(18, 35, 57, .92), rgba(13, 27, 46, .92));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-method__card:hover,
.page-about .about-method__card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(167, 139, 250, .55);
  box-shadow: var(--glow-violet);
}

.page-about .about-method__name {
  margin: 14px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: .02em;
  color: var(--fog);
}

.page-about .about-method__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-about .about-method__more {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
  border-bottom: 1px solid rgba(34, 211, 238, .5);
  padding-bottom: 2px;
}

/* ---------- 收束 ---------- */
.page-about .about-closing {
  padding: 46px 0 64px;
  background: linear-gradient(180deg, var(--ink), var(--panel));
  border-top: 1px solid var(--line);
}

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

.page-about .about-closing__text {
  margin: 0;
  max-width: 52ch;
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.6;
  color: var(--fog);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-honor__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 30px 0 82px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: start;
    margin-top: 12px;
  }

  .page-about .about-hero__lede {
    font-size: 17px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-method__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-tl::before {
    left: 14px;
  }

  .page-about .about-tl__item {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 0 34px;
    padding-left: 52px;
    margin-bottom: 38px;
  }

  .page-about .about-tl__item::before {
    left: 7px;
    top: 8px;
  }

  .page-about .about-tl__year {
    font-size: 32px;
  }

  .page-about .about-figure--flow {
    margin-top: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-partners__item,
  .page-about .about-method__card,
  .page-about .about-steps__item {
    transition: none;
  }

  .page-about .about-partners__item:hover,
  .page-about .about-method__card:hover,
  .page-about .about-method__card:focus-visible {
    transform: none;
  }
}