.page-about {
  background: var(--mh-cream);
  color: var(--mh-ink);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: 18px;
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 10px 0 52px;
}

.page-about .about-hero__slice {
  position: absolute;
  z-index: 0;
  top: -80px;
  right: -14%;
  width: 82%;
  height: 78%;
  background: linear-gradient(132deg, var(--mh-red) 0%, var(--mh-maroon) 68%, var(--mh-ink) 100%);
  transform: skewY(-7deg);
  pointer-events: none;
}

.page-about .about-hero__slice--thin {
  top: auto;
  bottom: -26px;
  right: auto;
  left: -12%;
  width: 46%;
  height: 12px;
  transform: skewY(-7deg);
  background: var(--mh-sand);
  opacity: .85;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  align-items: center;
}

.page-about .about-hero__kicker {
  margin: 0 0 12px;
  font-family: var(--mh-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--mh-orange);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--mh-font-display);
  font-weight: 900;
  font-size: clamp(28px, 7.4vw, 54px);
  line-height: 1.1;
  letter-spacing: -.015em;
  color: var(--mh-ink);
}

.page-about .about-hero__text {
  margin: 18px 0 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(30, 21, 18, .84);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 28px 0 0;
  padding: 0;
  background: var(--mh-line);
  border: 1px solid var(--mh-line);
  border-radius: var(--mh-radius);
  overflow: hidden;
}

.page-about .about-hero__facts > div {
  background: var(--mh-cream);
  padding: 11px 12px;
}

.page-about .about-hero__facts dt {
  font-family: var(--mh-font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: rgba(30, 21, 18, .58);
}

.page-about .about-hero__facts dd {
  margin: 4px 0 0;
  font-family: var(--mh-font-display);
  font-weight: 900;
  font-size: 17px;
  color: var(--mh-red);
}

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

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border-radius: var(--mh-radius);
  box-shadow: 0 26px 46px -30px rgba(30, 21, 18, .75);
}

.page-about .about-hero__cap {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(247, 240, 227, .92);
  background: var(--mh-ink);
  padding: 9px 12px;
  border-left: 3px solid var(--mh-red);
}

/* ---------- 主体框架 ---------- */
.page-about .about-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  padding-bottom: 64px;
}

.page-about .about-rail {
  border-top: 1px solid var(--mh-line-strong);
  border-bottom: 1px solid var(--mh-line);
  padding: 12px 0 10px;
  margin-bottom: 6px;
}

.page-about .about-rail__head {
  margin: 0 0 9px;
  font-family: var(--mh-font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: rgba(30, 21, 18, .5);
}

.page-about .about-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-rail__item {
  flex: 0 0 auto;
}

.page-about .about-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--mh-line-strong);
  border-radius: 999px;
  background: var(--mh-cream-deep);
  text-decoration: none;
  white-space: nowrap;
  font-size: 13px;
  color: rgba(30, 21, 18, .78);
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--mh-blue);
  border-color: var(--mh-blue);
  background: #fff;
}

.page-about .about-rail__num {
  font-family: var(--mh-font-mono);
  font-size: 11px;
  color: var(--mh-red);
}

/* ---------- 章节 ---------- */
.page-about .about-sec {
  padding: 40px 0;
  border-bottom: 1px solid var(--mh-line);
  scroll-margin-top: 112px;
}

.page-about .about-sec:last-child {
  border-bottom: 0;
  padding-bottom: 8px;
}

.page-about .about-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.page-about .about-sec__num {
  font-family: var(--mh-font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--mh-red);
  flex: 0 0 auto;
}

.page-about .about-sec__title {
  margin: 0;
  font-family: var(--mh-font-display);
  font-weight: 900;
  font-size: clamp(21px, 4.6vw, 33px);
  line-height: 1.22;
  letter-spacing: -.01em;
}

.page-about .about-sec__lead {
  margin: 0 0 4px;
  font-size: 15.5px;
  line-height: 1.82;
  color: rgba(30, 21, 18, .82);
}

.page-about .about-sec--band {
  background: linear-gradient(180deg, rgba(216, 185, 138, .16) 0%, rgba(216, 185, 138, .04) 100%);
  border-left: 3px solid var(--mh-sand);
  padding-left: 16px;
  padding-right: 16px;
  margin-left: -16px;
  margin-right: -16px;
}

/* ---------- 01 读者 ---------- */
.page-about .about-audience {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--mh-line);
}

.page-about .about-audience li {
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-bottom: 1px solid var(--mh-line);
}

.page-about .about-audience__who {
  font-family: var(--mh-font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--mh-maroon);
}

.page-about .about-audience__what {
  font-size: 15px;
  line-height: 1.78;
  color: rgba(30, 21, 18, .82);
}

/* ---------- 02 栏目 ---------- */
.page-about .about-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 24px;
}

.page-about .about-channel {
  position: relative;
  padding: 18px 16px 18px 20px;
  background: var(--mh-cream);
  border: 1px solid var(--mh-line);
  border-left: 3px solid var(--mh-red);
  border-radius: var(--mh-radius);
  box-shadow: var(--mh-shadow-soft);
}

.page-about .about-channel__idx {
  position: absolute;
  top: 14px;
  right: 14px;
  font-family: var(--mh-font-mono);
  font-size: 22px;
  line-height: 1;
  color: rgba(200, 16, 46, .16);
}

.page-about .about-channel__title {
  margin: 0 0 8px;
  font-family: var(--mh-font-display);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: .01em;
  color: var(--mh-ink);
}

.page-about .about-channel__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(30, 21, 18, .8);
}

/* ---------- 03 时间线 ---------- */
.page-about .about-tl {
  position: relative;
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--mh-sand), rgba(30, 21, 18, .14));
}

.page-about .about-tl__item {
  position: relative;
  padding: 0 0 24px 30px;
}

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

.page-about .about-tl__dot {
  position: absolute;
  left: 0;
  top: 5px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--mh-cream);
  border: 2px solid var(--mh-sand);
  transition: background .22s ease, border-color .22s ease, box-shadow .22s ease;
}

.page-about .about-tl__item:hover .about-tl__dot,
.page-about .about-tl__item:focus-within .about-tl__dot {
  background: var(--mh-red);
  border-color: var(--mh-red);
  box-shadow: 0 0 0 5px rgba(200, 16, 46, .14);
}

.page-about .about-tl__year {
  margin: 0 0 5px;
  font-family: var(--mh-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mh-red);
}

.page-about .about-tl__title {
  margin: 0 0 6px;
  font-family: var(--mh-font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.35;
  color: var(--mh-ink);
}

.page-about .about-tl__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(30, 21, 18, .8);
}

/* ---------- 04 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 22px;
}

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

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 6;
  object-fit: cover;
  border-radius: var(--mh-radius);
  border: 1px solid var(--mh-line);
}

.page-about .about-team__cap {
  margin-top: 9px;
  font-family: var(--mh-font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  color: rgba(30, 21, 18, .58);
}

.page-about .about-nums {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-num {
  background: var(--mh-cream-deep);
  border: 1px solid var(--mh-line);
  border-radius: var(--mh-radius);
  padding: 12px 13px;
}

.page-about .about-num b {
  display: block;
  font-family: var(--mh-font-display);
  font-weight: 900;
  font-size: 26px;
  line-height: 1;
  color: var(--mh-red);
}

.page-about .about-num span {
  display: block;
  margin-top: 6px;
  font-family: var(--mh-font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: rgba(30, 21, 18, .62);
}

.page-about .about-steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .about-steps li {
  padding: 14px 0;
  border-top: 1px solid var(--mh-line);
}

.page-about .about-steps li:last-child {
  border-bottom: 1px solid var(--mh-line);
}

.page-about .about-steps__title {
  position: relative;
  margin: 0 0 6px;
  padding-left: 16px;
  font-family: var(--mh-font-display);
  font-weight: 900;
  font-size: 15.5px;
  color: var(--mh-ink);
}

.page-about .about-steps__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .58em;
  width: 8px;
  height: 8px;
  background: var(--mh-orange);
  transform: rotate(45deg);
}

.page-about .about-steps__text {
  margin: 0;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(30, 21, 18, .8);
}

/* ---------- 05 合作 ---------- */
.page-about .about-partners__media {
  margin: 20px 0 22px;
}

.page-about .about-partners__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  border-radius: var(--mh-radius);
  border: 1px solid var(--mh-line-strong);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 24px;
  background: var(--mh-line);
  border: 1px solid var(--mh-line-strong);
  border-radius: var(--mh-radius);
  overflow: hidden;
}

.page-about .about-stat {
  background: var(--mh-cream);
  padding: 15px 13px;
}

.page-about .about-stat b {
  display: block;
  font-family: var(--mh-font-display);
  font-weight: 900;
  font-size: clamp(19px, 4.6vw, 27px);
  line-height: 1.1;
  color: var(--mh-ink);
}

.page-about .about-stat span {
  display: block;
  margin-top: 6px;
  font-family: var(--mh-font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  color: rgba(30, 21, 18, .6);
}

/* ---------- 06 收尾 ---------- */
.page-about .about-cta {
  position: relative;
  margin-top: 20px;
  background: var(--mh-ink);
  border-radius: var(--mh-radius);
  overflow: hidden;
  padding: 26px 20px 24px;
  color: var(--mh-cream);
}

.page-about .about-cta__bar {
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 140px;
  background: linear-gradient(120deg, var(--mh-red), var(--mh-maroon));
  transform: rotate(24deg);
  opacity: .9;
  pointer-events: none;
}

.page-about .about-cta__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-cta__text {
  margin: 0 0 14px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(247, 240, 227, .9);
}

.page-about .about-cta__text--soft {
  color: rgba(247, 240, 227, .72);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 20px;
}

.page-about .about-cta__link {
  color: var(--mh-cream);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(247, 240, 227, .45);
  padding-bottom: 2px;
  transition: color .2s ease, border-color .2s ease;
}

.page-about .about-cta__link:hover,
.page-about .about-cta__link:focus-visible {
  color: var(--mh-sand);
  border-color: var(--mh-sand);
}

/* ---------- 中屏 ---------- */
@media (min-width: 720px) {
  .page-about .about-audience li {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
  }

  .page-about .about-hero__facts dd {
    font-size: 19px;
  }

  .page-about .about-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

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

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

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 24px 0 68px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: 52px;
  }

  .page-about .about-hero__slice {
    top: -120px;
    right: -8%;
    width: 62%;
    height: 84%;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: 38px;
    align-items: start;
  }

  .page-about .about-team__media {
    position: sticky;
    top: 104px;
  }

  .page-about .about-channels {
    gap: 20px 22px;
  }

  .page-about .about-channel:nth-child(even) {
    transform: translateY(22px);
  }

  .page-about .about-channels {
    padding-bottom: 22px;
  }

  .page-about .about-cta {
    padding: 34px 32px 30px;
  }

  .page-about .about-cta__bar {
    width: 300px;
    height: 200px;
    right: -80px;
    top: -80px;
  }
}

@media (min-width: 980px) {
  .page-about .about-shell {
    grid-template-columns: 186px minmax(0, 1fr);
    gap: 54px;
    align-items: start;
    padding-bottom: 88px;
  }

  .page-about .about-rail {
    position: sticky;
    top: 104px;
    border-top: 0;
    border-bottom: 0;
    padding: 8px 0 0;
    margin-bottom: 0;
  }

  .page-about .about-rail__head {
    margin-bottom: 14px;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-rail__item {
    flex: 0 0 auto;
  }

  .page-about .about-rail__link {
    display: flex;
    width: 100%;
    padding: 11px 0;
    border: 0;
    border-bottom: 1px solid var(--mh-line);
    border-radius: 0;
    background: transparent;
    white-space: normal;
    font-size: 13.5px;
    color: rgba(30, 21, 18, .62);
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    background: transparent;
    border-bottom-color: var(--mh-blue);
    color: var(--mh-blue);
  }

  .page-about .about-sec {
    padding: 52px 0;
    scroll-margin-top: 118px;
  }

  .page-about .about-sec--band {
    margin-left: -24px;
    margin-right: 0;
    padding-left: 24px;
    padding-right: 24px;
  }

  .page-about .about-sec__lead {
    font-size: 16.5px;
    max-width: 42em;
  }

  .page-about .about-audience li {
    grid-template-columns: 186px minmax(0, 1fr);
    gap: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl__dot,
  .page-about .about-rail__link,
  .page-about .about-cta__link {
    transition: none;
  }

  .page-about .about-channel:nth-child(even) {
    transform: none;
  }
}