.page-about {
  --about-axis: 60px;
  --about-gap: clamp(20px, 3.4vw, 44px);
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
  padding-top: clamp(88px, 12vw, 120px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .breadcrumbs {
  margin-bottom: clamp(20px, 4vw, 36px);
}

/* ---------- 首屏海报层 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
  padding-bottom: clamp(40px, 7vw, 90px);
  border-bottom: var(--edge);
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(36px, 7.2vw, 82px);
  line-height: 1.02;
  letter-spacing: 0.01em;
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--mist);
  max-width: 62ch;
  margin: 0 0 clamp(24px, 3.4vw, 36px);
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 2.4vw, 24px);
  margin: 0 0 clamp(24px, 3.4vw, 36px);
}

.page-about .hero-stats__item {
  border-top: var(--edge);
  padding-top: 10px;
}

.page-about .hero-stats__item dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  margin-bottom: 4px;
}

.page-about .hero-stats__item dd {
  margin: 0;
}

.page-about .hero-stats__item .num {
  display: block;
  font-family: var(--font-num);
  font-weight: 600;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--signal);
}

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

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

.page-about .about-hero__media {
  border-radius: var(--radius-card);
  overflow: hidden;
  border: var(--edge);
  box-shadow: var(--shadow-soft);
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(43, 74, 65, 0.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(43, 74, 65, 0.42) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.page-about .about-hero__mark {
  position: absolute;
  top: 14px;
  right: 14px;
  writing-mode: vertical-rl;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--amber);
  background: rgba(5, 16, 13, 0.72);
  border: var(--edge);
  border-radius: 999px;
  padding: 10px 5px;
}

/* ---------- 通用图片 ---------- */
.page-about .media {
  position: relative;
  overflow: hidden;
}

.page-about .media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  padding-top: clamp(44px, 7vw, 88px);
  padding-bottom: clamp(40px, 6vw, 72px);
}

.page-about .about-origin h2,
.page-about .arch h2,
.page-about .voyage h2,
.page-about .crew h2,
.page-about .region h2,
.page-about .partner h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.2vw, 46px);
  line-height: 1.1;
  letter-spacing: 0.01em;
  margin: 0;
  text-wrap: balance;
}

.page-about .about-origin__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-about .about-origin__body {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  max-width: 78ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.78;
}

.page-about .about-origin__body p {
  margin: 0;
}

.page-about .season-parts {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: var(--edge);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-about .season-parts li {
  background: var(--panel);
  padding: 14px 16px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .season-parts .num {
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--amber);
  letter-spacing: 0.06em;
}

.page-about .season-parts__label {
  font-size: 14px;
  color: var(--paper);
}

/* ---------- 归档结构 ---------- */
.page-about .arch {
  background: var(--panel);
  border-top: var(--edge);
  border-bottom: var(--edge);
  padding-block: clamp(44px, 7vw, 88px);
}

.page-about .arch__grid {
  display: grid;
  gap: clamp(28px, 4.4vw, 56px);
  align-items: start;
}

.page-about .arch__figure {
  border-radius: var(--radius-card);
  border: var(--edge);
  background: var(--ink);
  padding: clamp(16px, 3vw, 28px);
}

.page-about .arch-svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .arch-svg__bars rect {
  fill: var(--raise);
  stroke: var(--line);
  stroke-width: 1;
}

.page-about .arch-svg__bars rect:first-child {
  stroke: rgba(31, 224, 194, 0.6);
}

.page-about .arch-svg__bars rect:last-child {
  fill: var(--indigo);
  stroke: rgba(244, 166, 58, 0.55);
}

.page-about .arch-svg__keys line {
  stroke: var(--line);
  stroke-width: 1;
  stroke-dasharray: 3 5;
}

.page-about .arch-svg__labels text {
  fill: var(--paper);
  font-family: var(--font-num);
  font-size: 15px;
  letter-spacing: 0.04em;
  text-anchor: middle;
  dominant-baseline: middle;
}

.page-about .arch__copy {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .arch__layers {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: var(--edge);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-about .arch__layers li {
  background: var(--panel);
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 16px 18px;
  transition: background var(--t-base);
}

.page-about .arch__layers li:hover {
  background: var(--raise);
}

.page-about .arch__layers .num {
  grid-row: span 2;
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--signal);
  padding-top: 4px;
  letter-spacing: 0.06em;
}

.page-about .arch__layers h3 {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .arch__layers p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .arch__note {
  margin: 0;
  border-left: 2px solid var(--amber);
  padding-left: 14px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 版本演进 ---------- */
.page-about .voyage {
  padding-block: clamp(48px, 8vw, 96px);
}

.page-about .voyage__head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(26px, 4vw, 44px);
  max-width: 72ch;
}

.page-about .voyage__lede {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.78;
}

.page-about .voyage__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .tl-row {
  display: grid;
  grid-template-columns: var(--about-axis) minmax(0, 1fr);
  gap: 12px;
}

.page-about .tl-axis {
  position: relative;
  padding-right: 18px;
  text-align: right;
}

.page-about .tl-axis::after {
  content: "";
  position: absolute;
  right: 5px;
  top: 6px;
  bottom: calc(-1 * clamp(14px, 2vw, 20px));
  width: 1px;
  background: var(--line);
}

.page-about .tl-row:last-child .tl-axis::after {
  bottom: 8px;
}

.page-about .tl-axis__year {
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--mist);
  transition: color var(--t-base);
}

.page-about .tl-axis__dot {
  position: absolute;
  right: 1px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--line);
  transition: background var(--t-base), border-color var(--t-base), transform var(--t-base);
}

.page-about .tl-card {
  background: var(--panel);
  border: var(--edge);
  border-radius: var(--radius-card);
  padding: clamp(16px, 2.6vw, 24px);
  transition: border-color var(--t-base), transform var(--t-base), box-shadow var(--t-base);
}

.page-about .tl-card h3 {
  margin: 10px 0 8px;
  font-family: var(--font-body);
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 600;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .tl-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--mist);
}

.page-about .tl-row:hover .tl-card,
.page-about .tl-row:focus-within .tl-card {
  border-color: rgba(31, 224, 194, 0.55);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.page-about .tl-row:hover .tl-axis__year,
.page-about .tl-row:focus-within .tl-axis__year {
  color: var(--signal);
}

.page-about .tl-row:hover .tl-axis__dot,
.page-about .tl-row:focus-within .tl-axis__dot {
  background: var(--signal);
  border-color: var(--signal);
  transform: scale(1.25);
}

.page-about .tl-more {
  margin-top: 10px;
}

.page-about .tl-more summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--signal);
  padding: 4px 0;
  transition: color var(--t-fast);
}

.page-about .tl-more summary::-webkit-details-marker {
  display: none;
}

.page-about .tl-more summary::after {
  content: "+";
  font-size: 14px;
  line-height: 1;
}

.page-about .tl-more[open] summary::after {
  content: "−";
}

.page-about .tl-more summary:hover {
  color: var(--signal-soft);
}

.page-about .tl-more p {
  margin: 8px 0 0;
  border-left: 1px solid var(--line);
  padding-left: 12px;
  font-size: 13px;
  color: var(--mist);
}

.page-about .voyage__visual {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .voyage__visual .media {
  border-radius: var(--radius-card);
  border: var(--edge);
  background: var(--panel);
}

.page-about .voyage__visual figcaption {
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
  letter-spacing: 0.02em;
}

/* ---------- 维护团队 ---------- */
.page-about .crew {
  background: var(--panel);
  border-top: var(--edge);
  border-bottom: var(--edge);
  padding-block: clamp(52px, 9vw, 118px);
}

.page-about .crew__inner {
  display: grid;
  gap: clamp(28px, 4.4vw, 52px);
}

.page-about .crew__head {
  display: grid;
  gap: 12px;
  max-width: 66ch;
}

.page-about .crew__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--mist);
}

.page-about .crew__groups {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(20px, 3.4vw, 38px);
}

.page-about .crew__groups li {
  display: grid;
  gap: 6px;
  padding-top: 14px;
  border-top: var(--edge);
}

.page-about .crew__groups .num {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-about .crew__groups h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .crew__groups p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 40ch;
}

.page-about .crew__rhythm {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: var(--edge);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-about .rhythm-item {
  background: var(--ink);
  padding: 16px 18px;
  display: grid;
  gap: 6px;
  align-content: start;
}

.page-about .rhythm-item .num {
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--signal);
}

.page-about .rhythm-item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.74;
  color: var(--mist);
}

/* ---------- 区域服务 ---------- */
.page-about .region {
  padding-block: clamp(44px, 7vw, 88px);
}

.page-about .region__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-about .region__visual {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .region__visual .media {
  border-radius: var(--radius-card);
  border: var(--edge);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.page-about .region__visual figcaption {
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .region__copy {
  display: grid;
  gap: 14px;
}

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

.page-about .region__facts {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.page-about .region__facts li {
  border-top: var(--edge);
  padding-top: 10px;
  display: grid;
  gap: 2px;
}

.page-about .region__facts .num {
  font-family: var(--font-num);
  font-weight: 600;
  font-size: clamp(18px, 2.4vw, 26px);
  color: var(--amber);
  line-height: 1.1;
}

.page-about .region__facts li span:last-child {
  font-size: 12px;
  color: var(--mist);
}

/* ---------- 内容合作与联系 ---------- */
.page-about .partner {
  padding-bottom: clamp(12px, 3vw, 32px);
}

.page-about .partner__inner {
  border: var(--edge);
  border-left: 3px solid var(--signal);
  border-radius: var(--radius-card);
  background: var(--raise);
  padding: clamp(24px, 4vw, 44px);
  display: grid;
  gap: 16px;
}

.page-about .partner__inner > p:first-of-type {
  margin: 0;
}

.page-about .partner__inner > p {
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  max-width: 72ch;
}

.page-about .partner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.page-about .partner__mail {
  font-size: 13px !important;
  color: var(--mist);
  border-top: var(--edge);
  padding-top: 14px;
  line-height: 1.8;
}

.page-about .partner__mail a {
  color: var(--signal);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  transition: color var(--t-fast);
}

.page-about .partner__mail a:hover {
  color: var(--signal-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .season-parts {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about {
    --about-axis: 84px;
  }

  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

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

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

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

  .page-about .region__facts {
    gap: 18px;
  }
}

@media (min-width: 1024px) {
  .page-about {
    --about-axis: 96px;
  }

  .page-about .about-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .arch__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .arch__figure {
    position: sticky;
    top: 96px;
  }

  .page-about .voyage__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }

  .page-about .voyage__visual {
    position: sticky;
    top: 96px;
  }

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

  .page-about .region__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .tl-card {
    padding: 22px 26px;
  }
}

@media (min-width: 1280px) {
  .page-about .about-hero h1 {
    letter-spacing: 0;
  }
}
<<<PAGE_CSS_END>>>