.page-about {
  --about-rail-w: 244px;
  --about-gap: clamp(28px, 4.5vw, 68px);
  --about-line: rgba(27, 27, 24, 0.16);
  --about-line-soft: rgba(185, 138, 75, 0.22);
  background: var(--mh-ink-green);
  color: var(--mh-warm-white);
  font-family: var(--mh-font-body);
  overflow-x: hidden;
}

.page-about * {
  box-sizing: border-box;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  background: var(--mh-ink-green);
  border-bottom: 1px solid var(--mh-line-dark);
}

.page-about .about-crumb .mh-shell {
  padding-top: 13px;
  padding-bottom: 12px;
}

.page-about .mh-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .mh-breadcrumb__link {
  font-family: var(--mh-font-index);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--mh-sage);
  text-decoration: none;
}

.page-about .mh-breadcrumb__link:hover {
  color: var(--mh-brass-light);
}

.page-about .mh-breadcrumb__link[aria-current="page"] {
  color: var(--mh-brass-light);
}

.page-about .mh-breadcrumb__sep {
  color: rgba(143, 167, 157, 0.55);
  font-family: var(--mh-font-index);
  font-size: 11px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(32px, 6vw, 76px) 0 clamp(44px, 7vw, 92px);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(46, 107, 88, 0.55) 0%, rgba(46, 107, 88, 0) 62%),
    var(--mh-ink-green);
  border-bottom: 1px solid var(--mh-line-dark);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(185, 138, 75, 0.09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(185, 138, 75, 0.09) 1px, transparent 1px);
  background-size: 82px 82px;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 76%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 76%);
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: end;
}

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

.page-about .about-hero__eyebrow {
  font-family: var(--mh-font-index);
  font-size: 11.5px;
  letter-spacing: 0.28em;
  color: var(--mh-brass);
  margin: 0;
}

.page-about .about-hero__title {
  font-family: var(--mh-font-display);
  font-weight: 300;
  font-size: clamp(46px, 9.5vw, 112px);
  line-height: 0.98;
  letter-spacing: 0.02em;
  color: var(--mh-warm-white);
  margin: 16px 0 0;
}

.page-about .about-hero__lead {
  max-width: 33em;
  margin: 22px 0 0;
  font-size: 15.5px;
  line-height: 1.95;
  color: rgba(251, 247, 239, 0.82);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-about .mh-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  font-size: 13.5px;
  letter-spacing: 0.08em;
  text-decoration: none;
  border-radius: var(--mh-radius);
  border: 1px solid transparent;
  transition: background-color 0.25s var(--mh-ease), color 0.25s var(--mh-ease), border-color 0.25s var(--mh-ease);
}

.page-about .about-hero .mh-btn--solid {
  background: var(--mh-brass);
  border-color: var(--mh-brass);
  color: var(--mh-ink-green);
}

.page-about .about-hero .mh-btn--solid:hover {
  background: var(--mh-brass-light);
  border-color: var(--mh-brass-light);
}

.page-about .about-hero .mh-btn--ghost {
  background: transparent;
  border-color: rgba(185, 138, 75, 0.55);
  color: var(--mh-warm-white);
}

.page-about .about-hero .mh-btn--ghost:hover {
  border-color: var(--mh-brass-light);
  color: var(--mh-brass-light);
}

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

.page-about .about-hero__figure::before {
  content: "";
  position: absolute;
  top: 10px;
  right: 10px;
  width: 44px;
  height: 44px;
  border-top: 2px solid var(--mh-brass);
  border-right: 2px solid var(--mh-brass);
  pointer-events: none;
  z-index: 1;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border: 1px solid var(--mh-line-dark);
  filter: saturate(0.9) contrast(1.03);
}

.page-about .about-hero__caption {
  margin-top: 10px;
  font-family: var(--mh-font-index);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: rgba(143, 167, 157, 0.9);
}

@media (prefers-reduced-motion: no-preference) {
  .page-about .about-hero__figure {
    animation: about-rise 0.9s var(--mh-ease) both;
  }

  @keyframes about-rise {
    from {
      opacity: 0;
      transform: translateY(16px);
    }
    to {
      opacity: 1;
      transform: none;
    }
  }
}

/* ---------- 长卷 ---------- */
.page-about .about-roll {
  background: var(--mh-paper);
  color: var(--mh-ink);
  padding: clamp(40px, 6vw, 84px) 0 clamp(48px, 7vw, 100px);
}

.page-about .about-roll__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 48px);
  align-items: start;
}

/* ---------- 左侧索引 ---------- */
.page-about .about-rail {
  min-width: 0;
}

.page-about .about-rail__sticky {
  background: var(--mh-ink-green);
  border: 1px solid var(--mh-line-dark);
  padding: 20px 18px 22px;
  color: var(--mh-warm-white);
}

.page-about .about-rail__title {
  margin: 0 0 12px;
  font-family: var(--mh-font-index);
  font-size: 10.5px;
  letter-spacing: 0.3em;
  color: var(--mh-brass);
}

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

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

.page-about .about-rail .mh-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--about-line-soft);
  font-size: 13.5px;
  line-height: 1.5;
  color: rgba(251, 247, 239, 0.72);
  text-decoration: none;
  transition: color 0.25s var(--mh-ease);
}

.page-about .about-rail .mh-toc__link:hover {
  color: var(--mh-brass-light);
}

.page-about .about-rail .mh-toc__link[aria-current] {
  color: var(--mh-brass-light);
}

.page-about .about-rail .mh-toc__link[aria-current] .mh-toc__num {
  color: var(--mh-cinnabar);
}

.page-about .about-rail .mh-toc__num {
  font-family: var(--mh-font-index);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--mh-brass);
}

.page-about .about-rail__years {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--mh-line-dark);
}

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

.page-about .about-years::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 8px;
  bottom: 10px;
  width: 1px;
  background: rgba(185, 138, 75, 0.32);
}

.page-about .about-years li {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 0 14px 18px;
}

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

.page-about .about-years li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 7px;
  height: 7px;
  background: var(--mh-brass);
}

.page-about .about-years__y {
  font-family: var(--mh-font-index);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--mh-brass-light);
}

.page-about .about-years__t {
  font-size: 12.5px;
  line-height: 1.55;
  color: rgba(251, 247, 239, 0.62);
}

/* ---------- 章节 ---------- */
.page-about .about-essays {
  display: flex;
  flex-direction: column;
  gap: clamp(46px, 7vw, 92px);
  min-width: 0;
}

.page-about .about-chapter {
  scroll-margin-top: calc(var(--mh-header-h) + 26px);
  min-width: 0;
}

.page-about .about-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  border-top: 1px solid var(--about-line);
  padding-top: 14px;
  margin-bottom: 20px;
}

.page-about .about-chapter__num {
  font-family: var(--mh-font-index);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mh-cinnabar);
}

.page-about .about-chapter__num--light {
  color: var(--mh-cinnabar);
}

.page-about .about-chapter__kicker {
  font-family: var(--mh-font-index);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mh-moss);
}

.page-about .about-chapter__kicker--light {
  color: var(--mh-brass);
}

.page-about .about-chapter h2 {
  font-family: var(--mh-font-display);
  font-weight: 300;
  font-size: clamp(27px, 4.4vw, 44px);
  line-height: 1.26;
  letter-spacing: 0.01em;
  color: var(--mh-ink);
  margin: 0 0 18px;
}

.page-about .about-chapter p {
  max-width: 40em;
  margin: 0 0 1.05em;
  font-size: 15.5px;
  line-height: 1.95;
  color: rgba(27, 27, 24, 0.86);
}

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

.page-about .about-quote {
  margin: clamp(24px, 3.6vw, 36px) 0;
  padding: 6px 0 6px 22px;
  border-left: 3px solid var(--mh-cinnabar);
  font-family: var(--mh-font-display);
  font-size: clamp(18px, 2.4vw, 25px);
  line-height: 1.62;
  font-weight: 400;
  color: var(--mh-green);
  max-width: 30em;
}

/* ---------- 12 → 7 对照 ---------- */
.page-about .about-shift {
  margin: clamp(26px, 4vw, 40px) 0 0;
  background: var(--mh-ink-green);
  color: var(--mh-warm-white);
  border: 1px solid var(--mh-line-dark);
  padding: clamp(20px, 3.2vw, 34px);
}

.page-about .about-shift__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  align-items: center;
}

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

.page-about .about-shift__label {
  margin: 0;
  font-family: var(--mh-font-index);
  font-size: 10.5px;
  letter-spacing: 0.26em;
  color: var(--mh-sage);
}

.page-about .about-shift__num {
  margin: 4px 0 12px;
  font-family: var(--mh-font-display);
  font-weight: 300;
  font-size: clamp(50px, 9vw, 82px);
  line-height: 1;
  color: rgba(251, 247, 239, 0.88);
}

.page-about .about-shift__side--now .about-shift__num {
  color: var(--mh-brass-light);
}

.page-about .about-shift__ticks {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 6px;
  max-width: 168px;
}

.page-about .about-shift__ticks li {
  height: 14px;
  background: rgba(251, 247, 239, 0.2);
}

.page-about .about-shift__codes {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-about .about-shift__codes li {
  font-family: var(--mh-font-index);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  padding: 5px 7px;
  border: 1px solid var(--mh-brass);
  color: var(--mh-brass-light);
}

.page-about .about-shift__note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(251, 247, 239, 0.58);
}

.page-about .about-shift__arrow {
  justify-self: center;
  width: 1px;
  height: 26px;
  background: linear-gradient(to bottom, rgba(185, 138, 75, 0), var(--mh-brass));
}

.page-about .about-shift__cap {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--about-line-soft);
  font-family: var(--mh-font-index);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(251, 247, 239, 0.55);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: clamp(24px, 4vw, 38px) 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid rgba(185, 138, 75, 0.5);
}

.page-about .about-figure--team img {
  aspect-ratio: 4 / 3;
}

.page-about .about-figure__cap {
  margin-top: 10px;
  font-family: var(--mh-font-index);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: rgba(27, 27, 24, 0.55);
}

/* ---------- 团队三卡 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(22px, 3.6vw, 34px);
}

.page-about .about-team__card {
  background: var(--mh-warm-white);
  border-top: 2px solid var(--mh-brass);
  border-left: 1px solid var(--about-line);
  border-right: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
  padding: 18px 16px 20px;
}

.page-about .about-team__no {
  margin: 0;
  max-width: none;
  font-family: var(--mh-font-index);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--mh-cinnabar);
}

.page-about .about-team__card h3 {
  margin: 9px 0 8px;
  font-family: var(--mh-font-display);
  font-weight: 600;
  font-size: 17.5px;
  line-height: 1.42;
  color: var(--mh-ink);
}

.page-about .about-team__card p {
  margin: 0;
  max-width: none;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(27, 27, 24, 0.72);
}

.page-about .about-team__card .about-team__no {
  font-size: 10.5px;
  line-height: 1.6;
  color: var(--mh-cinnabar);
}

/* ---------- 服务标准 ---------- */
.page-about .about-std {
  list-style: none;
  margin: clamp(22px, 3.6vw, 34px) 0 0;
  padding: 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-std li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 15px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-std__k {
  font-family: var(--mh-font-index);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--mh-moss);
}

.page-about .about-std__v {
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(27, 27, 24, 0.84);
}

.page-about .about-honor {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.page-about .about-honor__item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mh-green);
}

.page-about .about-honor__dot {
  width: 6px;
  height: 6px;
  background: var(--mh-cinnabar);
  flex: 0 0 auto;
}

/* ---------- 收束 ---------- */
.page-about .about-close {
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(46, 107, 88, 0.5) 0%, rgba(46, 107, 88, 0) 60%),
    var(--mh-ink-green);
  border: 1px solid var(--mh-line-dark);
  padding: clamp(26px, 4vw, 48px);
  color: var(--mh-warm-white);
  scroll-margin-top: calc(var(--mh-header-h) + 26px);
}

.page-about .about-close__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  border-top: 1px solid var(--mh-line-dark);
  padding-top: 14px;
  margin-bottom: 18px;
}

.page-about .about-close h2 {
  margin: 0 0 16px;
  font-family: var(--mh-font-display);
  font-weight: 300;
  font-size: clamp(26px, 4.2vw, 42px);
  line-height: 1.28;
  color: var(--mh-warm-white);
}

.page-about .about-close p {
  max-width: 38em;
  margin: 0 0 1em;
  font-size: 15px;
  line-height: 1.95;
  color: rgba(251, 247, 239, 0.8);
}

.page-about .about-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-close .mh-btn--solid {
  background: var(--mh-brass);
  border-color: var(--mh-brass);
  color: var(--mh-ink-green);
}

.page-about .about-close .mh-btn--solid:hover {
  background: var(--mh-brass-light);
  border-color: var(--mh-brass-light);
}

.page-about .about-close .mh-btn--ghost {
  background: transparent;
  border-color: rgba(185, 138, 75, 0.55);
  color: var(--mh-warm-white);
}

.page-about .about-close .mh-btn--ghost:hover {
  border-color: var(--mh-brass-light);
  color: var(--mh-brass-light);
}

.page-about .about-close .mh-btn--quiet {
  background: transparent;
  border-color: transparent;
  color: var(--mh-sage);
  text-decoration: underline;
  text-underline-offset: 4px;
  padding-left: 4px;
  padding-right: 4px;
}

.page-about .about-close .mh-btn--quiet:hover {
  color: var(--mh-brass-light);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-team {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-std li {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }
}

@media (min-width: 760px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    gap: clamp(28px, 4.5vw, 64px);
  }

  .page-about .about-shift__grid {
    grid-template-columns: minmax(0, 1fr) minmax(40px, 0.34fr) minmax(0, 1fr);
    gap: clamp(14px, 3vw, 34px);
  }

  .page-about .about-shift__arrow {
    width: 100%;
    height: 1px;
    background: linear-gradient(to right, rgba(185, 138, 75, 0), var(--mh-brass), rgba(185, 138, 75, 0));
  }

  .page-about .about-std li {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 26px;
  }
}

@media (min-width: 960px) {
  .page-about .about-roll__inner {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: var(--about-gap);
  }

  .page-about .about-rail__sticky {
    position: sticky;
    top: calc(var(--mh-header-h) + 22px);
  }

  .page-about .about-hero__caption {
    position: absolute;
    right: 0;
    bottom: -26px;
  }

  .page-about .about-hero {
    padding-bottom: clamp(64px, 8vw, 108px);
  }

  .page-about .about-chapter {
    max-width: 46em;
  }

  .page-about .about-close {
    max-width: none;
  }
}

@media (min-width: 1180px) {
  .page-about {
    --about-rail-w: 268px;
  }
}
</main>