.page-about {
  --about-hair: rgba(244, 241, 232, 0.12);
  --about-hair-strong: rgba(244, 241, 232, 0.26);
  background: var(--deep);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .about-section {
  position: relative;
  padding: clamp(44px, 7vw, 92px) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-head {
  max-width: 64ch;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .section-title {
  font-family: var(--font-editorial);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 10px 0 14px;
}

.page-about .lede {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: rgba(244, 241, 232, 0.8);
  margin: 0;
  max-width: 60ch;
}

.page-about .about-cap {
  display: block;
  padding: 10px 12px;
  border-top: 1px solid var(--line);
  background: rgba(10, 13, 11, 0.62);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--steel);
}

/* ---------- 封面 ---------- */
.page-about .about-cover {
  position: relative;
  padding: clamp(20px, 3vw, 34px) 0 clamp(40px, 7vw, 86px);
  background-image:
    repeating-linear-gradient(90deg, rgba(244, 241, 232, 0.05) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(244, 241, 232, 0.04) 0 1px, transparent 1px 96px),
    radial-gradient(120% 90% at 88% 0%, rgba(36, 21, 46, 0.9), transparent 62%),
    radial-gradient(90% 70% at 0% 100%, rgba(58, 21, 32, 0.7), transparent 65%);
  border-bottom: 1px solid var(--line);
}

.page-about .about-cover__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: end;
}

.page-about .about-cover__eyebrow {
  color: var(--lime);
  letter-spacing: 0.16em;
}

.page-about .about-cover__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 6.4vw, 66px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-transform: none;
}

.page-about .about-cover__accent {
  color: var(--lime);
  box-shadow: inset 0 -0.12em 0 rgba(200, 255, 61, 0.28);
}

.page-about .about-cover__lede {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.82;
  color: rgba(244, 241, 232, 0.82);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(24px, 3.6vw, 40px) 0 0;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .about-figure {
  background: var(--deep);
  padding: 14px 12px 16px;
}

.page-about .about-figure dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-about .about-figure dd {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1;
  color: var(--lime);
}

.page-about .about-cover__figure {
  margin: 0;
  border: 1px solid var(--about-hair-strong);
  background: var(--void);
}

.page-about .about-cover__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

/* ---------- 读者场景 ---------- */
.page-about .about-readers__grid {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .about-reader {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-left-width: 2px;
  border-left-style: solid;
}

.page-about .about-reader--lime {
  border-left-color: var(--lime);
}

.page-about .about-reader--teal {
  border-left-color: var(--teal);
}

.page-about .about-reader--orange {
  border-left-color: var(--orange);
}

.page-about .about-reader__no {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-about .about-reader .panel__title {
  font-family: var(--font-editorial);
  font-size: clamp(19px, 2.2vw, 23px);
  line-height: 1.3;
  margin: 0;
}

.page-about .about-reader p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 241, 232, 0.82);
}

.page-about .about-reader__list {
  margin: auto 0 0;
  padding: 12px 0 0;
  list-style: none;
  border-top: 1px dashed var(--about-hair);
  display: grid;
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 241, 232, 0.72);
}

.page-about .about-reader__list li {
  position: relative;
  padding-left: 16px;
}

.page-about .about-reader__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 1px;
  background: var(--lime);
}

/* ---------- 工作方法 ---------- */
.page-about .about-method__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-method__figure {
  margin: clamp(22px, 3vw, 32px) 0 0;
  border: 1px solid var(--about-hair-strong);
  background: var(--void);
}

.page-about .about-method__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-steps {
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-about .about-step {
  border: 1px solid var(--about-hair);
  background: rgba(17, 21, 19, 0.72);
  transition: border-color var(--dur) ease, background-color var(--dur) ease;
}

.page-about .about-step[open] {
  border-color: rgba(200, 255, 61, 0.4);
  background: rgba(10, 13, 11, 0.92);
}

.page-about .about-step__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-step__summary::marker {
  content: "";
}

.page-about .about-step__summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-about .about-step__no {
  grid-row: 1 / span 2;
  align-self: start;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-about .about-step__name {
  font-family: var(--font-editorial);
  font-size: clamp(16px, 1.9vw, 19px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-step__hint {
  grid-column: 2;
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--steel);
}

.page-about .about-step__body {
  padding: 0 16px 18px 16px;
  border-top: 1px solid var(--about-hair);
  margin-top: 2px;
  padding-top: 14px;
}

.page-about .about-step__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 241, 232, 0.78);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  display: grid;
  gap: clamp(18px, 3vw, 34px);
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-about .about-rail__label {
  margin: 0 0 10px;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--steel);
}

.page-about .about-rail__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
}

.page-about .about-rail__link {
  display: block;
  padding: 6px 12px;
  border: 1px solid var(--about-hair);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--paper);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--dur) ease, color var(--dur) ease, border-color var(--dur) ease;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink-on-lime);
}

.page-about .about-phases {
  display: grid;
  gap: clamp(20px, 2.6vw, 28px);
}

.page-about .about-phase {
  position: relative;
  padding: 0 0 0 20px;
  border-left: 1px solid var(--about-hair);
  scroll-margin-top: 110px;
}

.page-about .about-phase::before {
  content: "";
  position: absolute;
  left: -3.5px;
  top: 6px;
  width: 7px;
  height: 7px;
  background: var(--orange);
}

.page-about .about-phase:last-child {
  padding-bottom: 4px;
}

.page-about .about-phase__year {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.page-about .about-phase h3 {
  margin: 8px 0 8px;
  font-family: var(--font-editorial);
  font-size: clamp(17px, 2.1vw, 22px);
  font-weight: 700;
  line-height: 1.36;
}

.page-about .about-phase p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(244, 241, 232, 0.78);
  max-width: 62ch;
}

.page-about .about-chart {
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--about-hair-strong);
}

.page-about .about-chart__head {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 8px;
}

.page-about .about-chart .panel__title {
  margin: 0;
  font-family: var(--font-editorial);
  font-size: clamp(17px, 2.1vw, 21px);
}

.page-about .about-chart__note {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-about .about-chart__svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.page-about .about-chart__foot {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--about-hair);
  font-size: 13px;
  line-height: 1.75;
  color: rgba(244, 241, 232, 0.7);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-team__note {
  margin-top: clamp(20px, 3vw, 30px);
  color: var(--char);
}

.page-about .about-team__note .panel__title {
  margin: 0 0 12px;
  font-family: var(--font-editorial);
  font-size: clamp(16px, 1.9vw, 19px);
  color: var(--char);
}

.page-about .about-team__rhythm {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(17, 21, 19, 0.86);
}

.page-about .about-team__rhythm li {
  display: grid;
  gap: 2px;
  padding-left: 14px;
  border-left: 2px solid var(--char);
}

.page-about .about-team__rhythm .mono {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: rgba(17, 21, 19, 0.62);
}

.page-about .about-team__roles {
  display: grid;
  align-content: start;
}

.page-about .about-role {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 18px;
  padding: 18px 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-role:last-child {
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-role__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 0.9;
  color: var(--teal);
}

.page-about .about-role__title {
  margin: 0 0 6px;
  font-family: var(--font-editorial);
  font-size: clamp(16px, 1.9vw, 19px);
  font-weight: 700;
}

.page-about .about-role p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(244, 241, 232, 0.76);
}

/* ---------- 合作与认可 ---------- */
.page-about .about-partners__grid {
  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: 6px;
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--wine);
}

.page-about .about-stat__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 5vw, 46px);
  line-height: 0.95;
  color: var(--lime);
}

.page-about .about-stat__label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(244, 241, 232, 0.78);
}

.page-about .about-honor {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
  margin-top: clamp(20px, 3vw, 30px);
  padding-top: clamp(18px, 2.6vw, 26px);
  border-top: 1px solid var(--about-hair);
}

.page-about .about-honor__title {
  margin: 0 0 8px;
  font-family: var(--font-editorial);
  font-size: clamp(17px, 2.1vw, 21px);
}

.page-about .about-honor__text p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 241, 232, 0.78);
  max-width: 58ch;
}

.page-about .about-honor__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .about-honor__item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--about-hair);
  font-size: 14px;
  line-height: 1.6;
  color: rgba(244, 241, 232, 0.86);
}

/* ---------- 使用场景 ---------- */
.page-about .about-cases {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .about-case {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(16px, 2.4vw, 24px);
  border: 1px solid var(--about-hair);
  border-top: 2px solid var(--lime);
  background: linear-gradient(160deg, rgba(36, 21, 46, 0.7), rgba(10, 13, 11, 0.9));
}

.page-about .about-case h3 {
  margin: 0;
  font-family: var(--font-editorial);
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 700;
  line-height: 1.36;
}

.page-about .about-case p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(244, 241, 232, 0.76);
}

.page-about .about-case .tag {
  align-self: flex-start;
}

/* ---------- 结语 ---------- */
.page-about .about-next {
  background: linear-gradient(120deg, rgba(58, 21, 32, 0.85), rgba(7, 31, 25, 0.95));
}

.page-about .about-next__inner {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  align-items: center;
}

.page-about .about-next__text .section-title {
  margin-bottom: 12px;
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 720px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-about .about-step__hint {
    grid-column: 2;
  }
}

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

  .page-about .about-honor {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-cover__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }

  .page-about .about-method__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-about .about-timeline {
    grid-template-columns: 130px minmax(0, 1fr);
  }

  .page-about .about-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--about-hair);
  }

  .page-about .about-rail__link {
    border: 0;
    border-left: 2px solid transparent;
    margin-left: -1px;
    padding: 8px 10px;
    background: transparent;
  }

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

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (min-width: 1080px) {
  .page-about .about-timeline {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 44px;
  }

  .page-about .about-step__body {
    padding-left: 64px;
  }
}
<<<END>>>