.page-about {
  --about-ink-soft: rgba(21, 26, 24, 0.72);
  --about-light-soft: rgba(247, 241, 227, 0.76);
  background: var(--paper-warm);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  font-weight: 750;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--green-deep);
  margin: 0 0 14px;
}

.page-about h2 {
  font-size: clamp(24px, 4vw, 36px);
}

.page-about h3 {
  font-size: clamp(18px, 2.4vw, 22px);
  margin-bottom: 10px;
}

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

.page-about .about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--brick);
}

.page-about .about-eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--orange);
  flex: none;
}

.page-about .about-eyebrow--light {
  color: rgba(247, 241, 227, 0.82);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding: 16px 0 0;
}

.page-about .about-crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--metal);
}

.page-about .about-crumbs__item + .about-crumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-strong);
}

.page-about .about-crumbs__link {
  color: var(--green-deep);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-about .about-crumbs__link:hover,
.page-about .about-crumbs__link:focus-visible {
  border-bottom-color: var(--orange);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 18px 0 44px;
}

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

.page-about .about-hero h1 {
  font-size: clamp(36px, 8vw, 66px);
  font-weight: 850;
  letter-spacing: -0.025em;
  line-height: 1.08;
  margin-bottom: 18px;
}

.page-about .about-hero__lead {
  font-size: 16px;
  color: var(--about-ink-soft);
  max-width: 34em;
}

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

.page-about .about-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 26px 0 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--line-strong);
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--metal);
}

.page-about .about-hero__tags li {
  position: relative;
  padding-left: 14px;
}

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

.page-about .about-hero__art {
  position: relative;
  margin: 0;
  padding: 0 14px 14px 0;
}

.page-about .about-hero__art::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 16px;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    135deg,
    var(--green-night) 0 12px,
    var(--green-deep) 12px 24px
  );
}

.page-about .about-hero__art img {
  position: relative;
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-paper);
  object-fit: cover;
}

.page-about .about-hero__art figcaption {
  position: relative;
  margin-top: 10px;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--metal);
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  padding: 44px 0 52px;
  background: linear-gradient(180deg, var(--paper-warm) 0%, var(--paper-mid) 100%);
  border-top: 1px solid var(--line);
}

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

.page-about .about-origin__body p {
  max-width: 36em;
  color: var(--about-ink-soft);
}

.page-about .about-quote {
  margin: 24px 0 0;
  padding: 16px 20px;
  border-left: 4px solid var(--orange);
  background: rgba(247, 241, 227, 0.86);
  font-family: var(--font-display);
  font-size: clamp(17px, 2.4vw, 21px);
  font-weight: 650;
  line-height: 1.55;
  color: var(--green-deep);
}

/* ---------- 内容方法 ---------- */
.page-about .about-method {
  padding: 48px 0 56px;
  background: linear-gradient(168deg, var(--green-deep) 0%, var(--green-night) 100%);
  color: var(--paper-warm);
  border-top: 6px solid var(--orange);
}

.page-about .about-method h2 {
  color: var(--paper-warm);
}

.page-about .about-method__lead {
  max-width: 40em;
  color: var(--about-light-soft);
  font-size: 15.5px;
}

.page-about .about-method__grid {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-about .about-method__card {
  position: relative;
  padding: 22px 20px 24px;
  background: rgba(247, 241, 227, 0.06);
  border: 1px solid rgba(247, 241, 227, 0.2);
  border-top: 3px solid var(--orange);
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .about-method__card--alt {
  border-top-color: var(--brick);
}

.page-about .about-method__card:hover {
  transform: translateY(-3px);
  background: rgba(247, 241, 227, 0.1);
}

.page-about .about-method__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-about .about-method__card h3 {
  color: var(--paper-warm);
}

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

.page-about .about-method__points {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

.page-about .about-method__points li {
  position: relative;
  padding-left: 16px;
  font-family: var(--font-ui);
  font-size: 13px;
  line-height: 1.6;
  color: rgba(247, 241, 227, 0.78);
}

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

.page-about .about-method__link {
  display: inline-block;
  margin-top: 18px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--paper-warm);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-method__link:hover,
.page-about .about-method__link:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--paper-warm);
}

/* ---------- 编辑台 ---------- */
.page-about .about-desk {
  padding: 48px 0;
  background: var(--paper-mid);
}

.page-about .about-desk__inner {
  display: grid;
  gap: 26px;
}

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

.page-about .about-desk__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-paper);
  object-fit: cover;
}

.page-about .about-desk__figure figcaption {
  margin-top: 10px;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--metal);
}

.page-about .about-desk__copy p {
  max-width: 36em;
  color: var(--about-ink-soft);
}

.page-about .about-desk__board {
  display: grid;
  gap: 1px;
  margin: 22px 0;
  padding: 0;
  list-style: none;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.page-about .about-desk__cell {
  padding: 14px 16px;
  background: var(--paper-warm);
}

.page-about .about-desk__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--green-deep);
}

.page-about .about-desk__cell--accent .about-desk__num {
  color: var(--orange-deep);
}

.page-about .about-desk__label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--metal);
}

.page-about .about-desk__note {
  margin-top: 18px;
  padding-left: 16px;
  border-left: 3px solid var(--orange);
  font-family: var(--font-ui);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--about-ink-soft);
}

/* ---------- 里程碑 ---------- */
.page-about .about-milestones {
  padding: 48px 0 52px;
  background: var(--paper-warm);
}

.page-about .about-milestones__lead {
  max-width: 32em;
  color: var(--about-ink-soft);
}

.page-about .about-tabs {
  margin-top: 26px;
}

.page-about .about-tabs .about-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0;
  border-bottom: 1px solid var(--line-strong);
}

.page-about .about-tabs .about-tabs__tab {
  appearance: none;
  margin: 0 0 -1px;
  padding: 10px 18px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--metal);
  cursor: pointer;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .about-tabs .about-tabs__tab:hover {
  color: var(--green-deep);
  background: var(--paper-mid);
}

.page-about .about-tabs .about-tabs__tab[aria-selected="true"] {
  background: var(--green-deep);
  border-color: var(--green-deep);
  color: var(--paper-warm);
}

.page-about .about-tabs .about-tabs__tab:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 2px;
}

.page-about .about-tabs__panel {
  display: grid;
  gap: 16px;
  padding: 26px 0 0;
}

.page-about .about-tabs__panel[hidden] {
  display: none;
}

.page-about .about-year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(48px, 13vw, 92px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--orange);
}

.page-about .about-tabs__body p {
  max-width: 38em;
  color: var(--about-ink-soft);
}

/* ---------- 社区 ---------- */
.page-about .about-community {
  padding: 48px 0;
  background: linear-gradient(152deg, var(--green-night) 0%, var(--green-deep) 78%);
  color: var(--paper-warm);
}

.page-about .about-community__inner {
  display: grid;
  gap: 26px;
}

.page-about .about-community h2 {
  color: var(--paper-warm);
}

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

.page-about .about-community__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 8px solid var(--paper-warm);
  box-shadow: 0 26px 42px -26px rgba(0, 0, 0, 0.8);
  object-fit: cover;
}

.page-about .about-community__copy p {
  color: var(--about-light-soft);
  font-size: 15.5px;
}

.page-about .about-community__stats {
  display: grid;
  gap: 1px;
  margin: 22px 0;
  padding: 0;
  list-style: none;
  background: rgba(247, 241, 227, 0.24);
  border: 1px solid rgba(247, 241, 227, 0.24);
}

.page-about .about-community__stats li {
  padding: 14px 16px;
  background: rgba(11, 59, 46, 0.55);
}

.page-about .about-community__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--orange);
}

.page-about .about-community__label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  color: rgba(247, 241, 227, 0.8);
}

/* ---------- 服务约定 ---------- */
.page-about .about-service {
  padding: 48px 0 60px;
  background: var(--paper-warm);
}

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

.page-about .about-service__card {
  position: relative;
  padding: 26px 22px 28px;
  background: var(--paper-mid);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-paper);
}

.page-about .about-service__card p {
  color: var(--about-ink-soft);
  font-size: 15px;
}

.page-about .about-service__rule {
  border: 0;
  border-top: 1px dashed var(--line-strong);
  margin: 20px 0;
}

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

.page-about .about-service__list li {
  display: grid;
  gap: 2px;
}

.page-about .about-service__key {
  font-family: var(--font-ui);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--metal);
}

.page-about .about-service__value {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--green-deep);
  word-break: break-word;
}

.page-about .about-service__actions {
  margin-top: 24px;
}

.page-about .about-service__aside {
  padding: 22px 20px;
  background: var(--green-deep);
  color: var(--paper-warm);
}

.page-about .about-service__aside h3 {
  color: var(--paper-warm);
  font-size: 18px;
}

.page-about .about-service__aside p {
  color: var(--about-light-soft);
  font-size: 14.5px;
}

.page-about .about-service__link {
  display: inline-block;
  margin-top: 4px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--paper-warm);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease);
}

.page-about .about-service__link:hover,
.page-about .about-service__link:focus-visible {
  color: var(--orange);
}

/* ---------- 断点 ---------- */
@media (min-width: 600px) {
  .page-about .about-desk__board {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 860px) {
  .page-about {
    font-size: 17px;
  }

  .page-about .about-hero {
    padding: 30px 0 64px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 52px;
    align-items: center;
  }

  .page-about .about-origin {
    padding: 56px 0 64px;
  }

  .page-about .about-origin__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 56px;
  }

  .page-about .about-method {
    padding: 60px 0 68px;
  }

  .page-about .about-method__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-desk {
    padding: 60px 0;
  }

  .page-about .about-desk__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-milestones {
    padding: 60px 0 64px;
  }

  .page-about .about-tabs__panel {
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
    padding: 30px 0 0;
  }

  .page-about .about-community {
    padding: 60px 0;
  }

  .page-about .about-community__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 44px;
    align-items: center;
  }

  .page-about .about-service {
    padding: 60px 0 72px;
  }

  .page-about .about-service__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 24px;
    align-items: start;
  }
}