.page-about {
  --about-hairline: rgba(36, 28, 21, 0.12);
  --about-gold-line: rgba(200, 162, 74, 0.5);
  --about-ink-soft: rgba(36, 28, 21, 0.76);
  --about-ink-faint: rgba(36, 28, 21, 0.55);
  --about-narrow: 760px;
}

.page-about .about-context {
  padding-top: 22px;
  padding-bottom: 4px;
}

.page-about .breadcrumb {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--about-ink-faint);
}

.page-about .breadcrumb a {
  color: var(--royal-mid);
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  text-decoration: underline;
}

.page-about h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(26px, 4.4vw, 40px);
  line-height: 1.22;
  letter-spacing: -0.005em;
  color: var(--royal-deep);
  margin: 0;
}

.page-about .section-head {
  max-width: 46em;
  margin-bottom: 30px;
}

.page-about .section-head p {
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--about-ink-soft);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding-block: 22px 54px;
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -16%;
  top: -26%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 32%, rgba(30, 78, 140, 0.15), rgba(30, 78, 140, 0) 68%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .about-hero__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.3em;
  color: var(--gold-dim);
}

.page-about .about-hero h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(31px, 7.2vw, 60px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--royal-deep);
  margin: 14px 0 0;
  max-width: 17em;
}

.page-about .about-hero .lede {
  margin: 20px 0 0;
  max-width: 44em;
  font-size: 16.5px;
  color: var(--about-ink-soft);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin: 30px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--about-gold-line);
}

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

.page-about .about-hero__fact dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--gold-dim);
  text-transform: uppercase;
}

.page-about .about-hero__fact dd {
  margin: 7px 0 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--about-ink-soft);
}

/* ---------- 档案面板 ---------- */

.page-about .about-archive {
  padding-block: 6px 60px;
}

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

.page-about .about-archive__rail {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .about-archive__rail-text {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--about-ink-faint);
}

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

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

.page-about .about-archive__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-panel);
  border: 1px solid var(--about-hairline);
  object-fit: cover;
}

.page-about .about-archive__figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--about-ink-faint);
}

.page-about .about-archive__panel {
  padding: 26px 22px;
  background: var(--paper);
  border: 1px solid var(--about-hairline);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-panel);
}

.page-about .about-archive__panel .index-number {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--gold-dim);
}

.page-about .about-archive__panel h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.35;
  color: var(--royal-deep);
  margin: 0 0 10px;
}

.page-about .about-archive__panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

/* ---------- 团队线 ---------- */

.page-about .about-team {
  padding-block: 6px 66px;
}

.page-about .about-team__banner {
  margin: 0 0 34px;
}

.page-about .about-team__banner img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-panel);
  border: 1px solid var(--about-hairline);
  object-fit: cover;
}

.page-about .about-team__banner figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--about-ink-faint);
}

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

.page-about .about-team__line {
  position: relative;
  padding: 24px 22px 20px;
  background: var(--cream);
  border: 1px solid var(--about-hairline);
  border-top: 3px solid var(--gold);
  border-radius: var(--radius-soft);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.page-about .about-team__line:hover,
.page-about .about-team__line:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 22px 44px -36px rgba(18, 58, 107, 0.95);
  border-top-color: var(--gold-dim);
}

.page-about .about-team__line:focus-visible {
  outline: 2px solid var(--gold-dim);
  outline-offset: 3px;
}

.page-about .about-team__code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--gold-dim);
}

.page-about .about-team__line h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  color: var(--royal-deep);
  margin: 10px 0 8px;
}

.page-about .about-team__line p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--about-ink-soft);
}

.page-about .about-team__handoff {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--about-gold-line);
  font-family: var(--font-sans);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--gold-dim);
}

/* ---------- 时间线 ---------- */

.page-about .about-timeline-section {
  padding-block: 6px 66px;
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), rgba(200, 162, 74, 0.12));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 30px 38px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--gold);
}

.page-about .about-timeline__stamp {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-dim);
  padding-bottom: 6px;
}

.page-about .about-timeline__item h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.4;
  color: var(--royal-deep);
  margin: 4px 0 8px;
}

.page-about .about-timeline__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-ink-soft);
  max-width: 40em;
}

.page-about .about-timeline__figure {
  margin: 34px 0 0;
}

.page-about .about-timeline__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-panel);
  border: 1px solid var(--about-hairline);
  object-fit: cover;
}

.page-about .about-timeline__figure figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--about-ink-faint);
}

/* ---------- 品质与资质 ---------- */

.page-about .about-quality {
  padding-block: 6px 66px;
}

.page-about .about-quality__panel {
  background: var(--moss);
  color: var(--cream);
  border-radius: var(--radius-panel);
  padding: 34px 22px;
  box-shadow: 0 34px 70px -58px rgba(31, 59, 51, 0.95);
}

.page-about .eyebrow--on-dark {
  color: var(--gold);
}

.page-about .about-quality__lead h2 {
  color: var(--cream);
  margin-top: 16px;
}

.page-about .about-quality__lead p {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.82;
  color: rgba(246, 241, 231, 0.82);
  max-width: 42em;
}

.page-about .about-quality__list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-about .about-quality__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid rgba(246, 241, 231, 0.18);
}

.page-about .about-quality__item:first-child {
  border-top-color: var(--about-gold-line);
}

.page-about .about-quality__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold);
  padding-top: 3px;
}

.page-about .about-quality__item h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.45;
  color: var(--cream);
  margin: 0 0 8px;
}

.page-about .about-quality__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(246, 241, 231, 0.78);
}

/* ---------- 供应链 ---------- */

.page-about .about-supply {
  padding-block: 6px 66px;
}

.page-about .about-supply__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-about .about-supply__text h2 {
  margin-top: 16px;
}

.page-about .about-supply__text p {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--about-ink-soft);
}

.page-about .about-supply__link a {
  color: var(--royal-mid);
  text-decoration: none;
  border-bottom: 1px solid var(--about-gold-line);
}

.page-about .about-supply__link a:hover {
  border-bottom-color: var(--gold-dim);
}

.page-about .about-supply__points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  align-content: start;
}

.page-about .about-supply__point {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid var(--about-hairline);
}

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

.page-about .about-supply__k {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--gold-dim);
  padding-top: 2px;
}

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

/* ---------- 服务承诺 ---------- */

.page-about .about-promise {
  padding-block: 6px 72px;
}

.page-about .about-promise__stages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  counter-reset: about-stage;
}

.page-about .about-promise__stage {
  position: relative;
  padding: 24px 22px 22px;
  background: var(--paper);
  border: 1px solid var(--about-hairline);
  border-left: 3px solid var(--royal-mid);
  border-radius: var(--radius-soft);
}

.page-about .about-promise__step {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--gold-dim);
}

.page-about .about-promise__stage h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  color: var(--royal-deep);
  margin: 10px 0 8px;
}

.page-about .about-promise__stage p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-promise__stage a {
  color: var(--royal-mid);
  text-decoration: none;
  border-bottom: 1px solid var(--about-gold-line);
}

.page-about .about-promise__stage a:hover {
  border-bottom-color: var(--gold-dim);
}

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

/* ---------- 桌面布局 ---------- */

@media (min-width: 700px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }

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

  .page-about .about-quality__panel {
    padding: 44px 40px;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-block: 30px 72px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 46px;
  }

  .page-about .about-hero__note {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 0.34em;
    padding-top: 6px;
  }

  .page-about .about-archive__grid {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 46px;
  }

  .page-about .about-archive__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .page-about .about-archive__rail-text {
    writing-mode: vertical-rl;
    letter-spacing: 0.3em;
  }

  .page-about .about-supply__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1fr);
    gap: 54px;
    align-items: start;
  }

  .page-about .about-promise__stages {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 1020px) {
  .page-about .about-archive__panels {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1fr);
    grid-template-rows: auto auto;
    gap: 26px 30px;
    align-items: start;
  }

  .page-about .about-archive__figure {
    grid-row: 1 / span 2;
  }

  .page-about .about-archive__panel--offset {
    transform: translateY(18px);
  }
}

@media (min-width: 1120px) {
  .page-about .about-team__lines {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
    padding-bottom: 26px;
  }

  .page-about .about-team__line:nth-child(2n) {
    margin-top: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__line {
    transition: none;
  }

  .page-about .about-team__line:hover,
  .page-about .about-team__line:focus-within {
    transform: none;
  }
}