/* ==========================================================
   品牌自述页 /about-us/
   ========================================================== */

.page-about {
  --about-rule: rgba(212, 168, 83, 0.34);
  --about-soft: rgba(232, 226, 210, 0.15);
  background-color: var(--navy);
  color: var(--paper);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .crumbs {
  padding-top: 20px;
}

.page-about #about-opening,
.page-about #about-timeline,
.page-about #about-team,
.page-about #about-cadence,
.page-about #about-next {
  scroll-margin-top: calc(var(--header-h) + 76px);
}

.page-about .about-head {
  margin-bottom: 4px;
}

/* ---------------- 首屏 ---------------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -32%;
  width: min(1100px, 145vw);
  height: 780px;
  transform: translateX(-58%);
  background: radial-gradient(closest-side, rgba(53, 224, 200, 0.14), transparent 72%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -4%;
  top: 58%;
  width: 44%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--about-rule), transparent);
  pointer-events: none;
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 40px;
  padding: 40px 0 56px;
}

.page-about .about-hero-title {
  margin: 14px 0 20px;
  font-family: var(--font-sans);
  font-size: clamp(1.8rem, 6.4vw, 3.35rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.035em;
  color: var(--paper);
}

.page-about .about-hero-lede {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(0.97rem, 1.1vw, 1.08rem);
  line-height: 1.9;
  color: rgba(244, 241, 232, 0.78);
}

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

.page-about .about-hero-media {
  position: relative;
  margin: 0;
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--about-soft);
  background-color: var(--navy-2);
}

.page-about .about-hero-media::after {
  content: "";
  position: absolute;
  right: -8px;
  bottom: -8px;
  width: 44%;
  height: 46%;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  pointer-events: none;
}

/* ---------------- 章节导览 ---------------- */

.page-about .about-index {
  position: sticky;
  top: var(--header-h);
  z-index: 12;
  background-color: rgba(11, 27, 58, 0.94);
  border-top: 1px solid var(--about-soft);
  border-bottom: 1px solid var(--about-soft);
}

.page-about .about-index-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-about .about-index-inner::-webkit-scrollbar {
  display: none;
}

.page-about .about-index-label {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .about-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index-list a {
  display: inline-block;
  padding: 6px 13px;
  border: 1px solid var(--about-soft);
  border-radius: 999px;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: rgba(244, 241, 232, 0.74);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.24s var(--ease), background-color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .about-index-list a:hover,
.page-about .about-index-list a:focus-visible {
  color: var(--navy);
  background-color: var(--cyan);
  border-color: var(--cyan);
}

/* ---------------- 发展时间线 ---------------- */

.page-about .about-timeline {
  position: relative;
  overflow: hidden;
  padding: 60px 0 72px;
}

.page-about .about-timeline-art {
  position: absolute;
  top: -18px;
  right: -14%;
  width: min(660px, 82%);
  margin: 0;
  opacity: 0.15;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(closest-side, #000 12%, transparent 84%);
  mask-image: radial-gradient(closest-side, #000 12%, transparent 84%);
}

.page-about .about-timeline-art img {
  display: block;
  width: 100%;
  height: auto;
}

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

.page-about .timeline {
  position: relative;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(212, 168, 83, 0.45) 6%, rgba(212, 168, 83, 0.45) 94%, transparent);
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 38px 34px;
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 13px;
  height: 13px;
  box-sizing: border-box;
  border-radius: 50%;
  background-color: var(--navy);
  border: 2px solid var(--gold);
  transition: background-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .tl-item:hover::before {
  background-color: var(--gold);
  box-shadow: 0 0 0 6px rgba(212, 168, 83, 0.16);
}

.page-about .tl-meta {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .tl-year {
  color: var(--cyan);
}

.page-about .tl-title {
  margin: 0 0 10px;
  font-size: clamp(1.05rem, 2.1vw, 1.3rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-about .tl-text {
  margin: 0;
  max-width: 64ch;
  font-size: 0.94rem;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.72);
}

/* ---------------- 团队与分工（米白纸张） ---------------- */

.page-about .about-team {
  position: relative;
  padding: 60px 0 68px;
  background-color: var(--paper);
  color: var(--ink);
}

.page-about .about-team::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: clamp(72px, 14%, 190px);
  height: 5px;
  background: linear-gradient(90deg, var(--gold), rgba(212, 168, 83, 0));
}

.page-about .about-team-grid {
  display: grid;
  gap: 34px;
}

.page-about .about-team-eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--cyan-ink);
}

.page-about .about-team-title {
  margin: 0 0 16px;
  font-size: clamp(1.3rem, 3.2vw, 1.95rem);
  font-weight: 800;
  line-height: 1.34;
  letter-spacing: 0.03em;
  color: var(--ink);
}

.page-about .about-team-text {
  margin: 0 0 26px;
  max-width: 56ch;
  font-size: 0.96rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-about .about-team-media {
  margin: 0;
  border: 1px solid rgba(10, 15, 24, 0.14);
  background-color: var(--edge);
  box-shadow: 4px 4px 0 rgba(10, 15, 24, 0.06);
}

.page-about .about-team-media img {
  display: block;
  width: 100%;
  height: auto;
}

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

.page-about .duty {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  padding: 18px 20px;
  border: 1px solid rgba(10, 15, 24, 0.14);
  background-color: #ffffff;
  box-shadow: 3px 3px 0 rgba(10, 15, 24, 0.06);
  transition: transform 0.26s var(--ease), box-shadow 0.26s var(--ease), border-color 0.26s var(--ease);
}

.page-about .duty:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
  box-shadow: 5px 6px 0 rgba(212, 168, 83, 0.24);
}

.page-about .duty-idx {
  grid-row: span 2;
  margin: 0;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--clay);
}

.page-about .duty-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .duty-text {
  margin: 0;
  font-size: 0.895rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------------- 更新节奏 ---------------- */

.page-about .about-cadence {
  padding: 62px 0 72px;
}

.page-about .cadence-list {
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-soft);
}

.page-about .cadence-row {
  display: grid;
  gap: 12px;
  padding: 26px 0;
  border-bottom: 1px solid var(--about-soft);
}

.page-about .cadence-when {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .cadence-cycle {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .cadence-unit {
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--stone);
}

.page-about .cadence-title {
  margin: 0 0 8px;
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .cadence-text {
  margin: 0;
  max-width: 66ch;
  font-size: 0.935rem;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.7);
}

/* ---------------- 继续了解（深空蓝收束） ---------------- */

.page-about .about-next {
  position: relative;
  overflow: hidden;
  padding: 62px 0 72px;
  background-color: var(--navy-3);
  border-top: 1px solid var(--about-soft);
}

.page-about .about-next::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -24%;
  width: min(900px, 130vw);
  height: 520px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(212, 168, 83, 0.14), transparent 74%);
  pointer-events: none;
}

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

.page-about .about-next-grid {
  display: grid;
  gap: 14px;
  margin-top: 34px;
}

.page-about .next-card {
  position: relative;
  display: block;
  padding: 24px 22px 22px;
  border: 1px solid var(--about-soft);
  background-color: rgba(18, 43, 82, 0.62);
  color: inherit;
  text-decoration: none;
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), background-color 0.28s var(--ease);
}

.page-about .next-card:hover,
.page-about .next-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--gold);
  background-color: rgba(18, 43, 82, 0.98);
}

.page-about .next-idx {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .next-title {
  margin: 0 0 8px;
  font-size: 1.04rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .next-text {
  margin: 0;
  font-size: 0.895rem;
  line-height: 1.8;
  color: rgba(244, 241, 232, 0.7);
}

.page-about .next-arrow {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  color: var(--gold);
  transition: transform 0.28s var(--ease);
}

.page-about .next-card:hover .next-arrow,
.page-about .next-card:focus-visible .next-arrow {
  transform: translateX(5px);
}

.page-about .about-contact-strip {
  display: grid;
  gap: 20px;
  margin-top: 40px;
  padding: 26px 22px;
  border: 1px solid var(--about-soft);
  border-left: 3px solid var(--gold);
  background-color: rgba(11, 27, 58, 0.82);
}

.page-about .about-contact-label {
  margin: 0 0 6px;
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  color: var(--stone);
}

.page-about .about-contact-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  color: var(--paper);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-about .about-contact-note {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.78;
  color: rgba(244, 241, 232, 0.62);
}

/* ---------------- 响应式 ---------------- */

@media (min-width: 640px) {
  .page-about .about-next-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-contact-strip {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.5fr);
    align-items: center;
    gap: 30px;
    padding: 28px 32px;
  }

  .page-about .cadence-row {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 36px;
    align-items: start;
    padding: 30px 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
    gap: 64px;
    padding: 66px 0 84px;
  }

  .page-about .about-team {
    padding: 76px 0 84px;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-timeline {
    padding: 76px 0 88px;
  }

  .page-about .about-cadence {
    padding: 78px 0 88px;
  }

  .page-about .about-next {
    padding: 78px 0 88px;
  }
}

@media (min-width: 1060px) {
  .page-about .about-next-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .timeline {
    margin-top: 48px;
  }

  .page-about .tl-item {
    padding-bottom: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .duty,
  .page-about .next-card,
  .page-about .next-arrow,
  .page-about .tl-item::before {
    transition: none;
  }
}
<<<END>>>