.page-about {
  --about-cut: 20px;
  --about-gap: 20px;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--ff-body);
  overflow-wrap: break-word;
}

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

.page-about .about-crumbs {
  padding-top: 18px;
  padding-bottom: 6px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 52px;
  background:
    radial-gradient(circle at 84% 6%, rgba(32, 229, 207, 0.16), transparent 56%),
    linear-gradient(158deg, var(--ink-green) 0%, var(--turf) 100%);
  color: var(--cream);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 30%;
  right: -12%;
  bottom: -46%;
  height: 82%;
  background: repeating-linear-gradient(115deg, rgba(255, 106, 42, 0.18) 0 2px, transparent 2px 36px);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 34px;
}

.page-about .about-hero__title {
  margin: 10px 0 18px;
  font-family: var(--ff-display);
  font-size: clamp(36px, 9vw, 72px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-about .about-hero__title em {
  font-style: normal;
  display: inline-block;
  padding: 0 6px;
  color: var(--ink);
  background: var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.page-about .about-hero__lede {
  max-width: 46ch;
  color: rgba(244, 240, 230, 0.86);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-about .about-hero__facts strong {
  font-family: var(--ff-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-about .about-hero__facts span {
  font-size: 13px;
  color: rgba(244, 240, 230, 0.72);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__media {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
  background: var(--panel);
}

.page-about .about-hero__media img {
  aspect-ratio: 14 / 9;
  width: 100%;
}

.page-about .about-cert {
  margin-top: 16px;
  padding: 16px 18px;
  border-left: 4px solid var(--orange);
  background: rgba(34, 45, 48, 0.86);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.page-about .about-cert__label {
  margin: 0;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-about .about-cert__value {
  margin: 6px 0 4px;
  font-family: var(--ff-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--cream);
}

.page-about .about-cert__meta {
  margin: 0;
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--cool);
}

/* ---------- 目录地图 ---------- */
.page-about .about-map {
  padding: 34px 0;
  background: var(--cream);
  border-bottom: 1px solid var(--line);
}

.page-about .about-map__title {
  margin: 0 0 16px;
  font-family: var(--ff-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--turf);
}

.page-about .about-map__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
}

.page-about .about-map__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  border: 2px solid var(--line);
  background: #fff;
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .about-map__list a:hover,
.page-about .about-map__list a.is-current {
  border-color: var(--orange);
  transform: translateX(2px);
}

.page-about .about-map__idx {
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--orange);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  padding: 46px 0;
  scroll-margin-top: 84px;
}

.page-about .about-chapter__inner {
  display: grid;
  gap: 24px;
}

.page-about .about-chapter__head .section-title {
  margin: 10px 0 0;
  font-family: var(--ff-display);
  font-size: clamp(25px, 5.4vw, 38px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-about .about-chapter__body p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.72;
}

.page-about .about-chapter__body p:last-child {
  margin-bottom: 0;
}

.page-about .about-chapter__figure {
  margin: 22px 0 0;
}

.page-about .about-chapter__figure img {
  aspect-ratio: 16 / 9;
  width: 100%;
}

.page-about .media__caption {
  display: block;
  margin-top: 8px;
  font-family: var(--ff-mono);
  font-size: 12px;
  line-height: 1.5;
  color: rgba(15, 23, 26, 0.62);
}

.page-about .about-chapter--paper {
  background: var(--cream);
}

.page-about .about-chapter--cream {
  background: #FBF8F1;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-chapter--ink {
  background: var(--ink-green);
  color: var(--cream);
}

.page-about .about-chapter--turf {
  background: var(--turf);
  color: var(--cream);
}

.page-about .about-chapter--ink .about-chapter__body p,
.page-about .about-chapter--turf .about-chapter__body p {
  color: rgba(244, 240, 230, 0.84);
}

.page-about .about-chapter--ink .section-title,
.page-about .about-chapter--turf .section-title {
  color: var(--cream);
}

.page-about .about-chapter--ink .media__caption,
.page-about .about-chapter--turf .media__caption {
  color: var(--cool);
}

/* ---------- 使命 ---------- */
.page-about .about-mission__quote {
  margin: 0 0 22px;
  font-family: var(--ff-display);
  font-size: clamp(24px, 5.6vw, 40px);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: -0.01em;
  border-left: 5px solid var(--orange);
  padding-left: 16px;
}

.page-about .about-mission__quote em {
  font-style: normal;
  color: var(--amber);
}

.page-about .about-mission__points {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-mission__points li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  background: rgba(34, 45, 48, 0.72);
  border-left: 3px solid var(--cyan);
  font-size: 14.5px;
  line-height: 1.6;
  color: rgba(244, 240, 230, 0.9);
}

.page-about .about-mission__num {
  flex: none;
  font-family: var(--ff-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
}

/* ---------- 三条内容线 ---------- */
.page-about .about-lines {
  display: grid;
  gap: 14px;
}

.page-about .about-line {
  padding: 18px 18px 20px;
  background: rgba(11, 43, 36, 0.55);
  border: 2px solid rgba(244, 240, 230, 0.16);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-about .about-line:hover {
  transform: translate(2px, -2px);
  border-color: var(--orange);
}

.page-about .about-line__tag {
  margin: 0 0 8px;
  display: inline-block;
  padding: 3px 9px;
  background: var(--orange);
  color: var(--ink);
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.page-about .about-line__title {
  margin: 0 0 8px;
  font-family: var(--ff-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .about-line p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.68;
}

.page-about .about-check {
  margin-top: 26px;
  display: grid;
  gap: 18px;
}

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

.page-about .about-check__figure img {
  aspect-ratio: 3 / 2;
  width: 100%;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .about-check__title {
  margin: 0 0 10px;
  font-family: var(--ff-display);
  font-size: 21px;
  font-weight: 700;
  color: var(--amber);
}

/* ---------- 版本演进 ---------- */
.page-about .about-versions__intro {
  font-family: var(--ff-mono);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(15, 23, 26, 0.66);
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line);
}

.page-about .about-versions {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-version {
  display: grid;
  gap: 10px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-version__mark {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .about-version__tag {
  font-family: var(--ff-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--turf);
}

.page-about .about-version__stage {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(15, 23, 26, 0.5);
}

.page-about .about-version h3 {
  margin: 0 0 6px;
  font-family: var(--ff-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
}

.page-about .about-version p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(15, 23, 26, 0.76);
}

.page-about .about-version--live {
  margin-top: 10px;
  padding: 20px 16px;
  border-bottom: none;
  background: var(--ink-green);
  color: var(--cream);
  border-left: 5px solid var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-about .about-version--live h3 {
  color: var(--cream);
}

.page-about .about-version--live p {
  color: rgba(244, 240, 230, 0.82);
}

.page-about .about-version--live .about-version__tag,
.page-about .about-version__tag--live {
  color: var(--orange);
}

.page-about .about-version--live .about-version__stage {
  color: var(--cyan);
}

/* ---------- 团队数据 ---------- */
.page-about .about-stats {
  display: grid;
  gap: 12px;
  margin: 20px 0 24px;
}

.page-about .about-stat {
  padding: 16px 16px 18px;
  background: #fff;
  border: 2px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-about .about-stat:hover {
  transform: translateY(-2px);
  border-color: var(--orange);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--ff-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--turf);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 6px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-about .about-stat p {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.62;
  color: rgba(15, 23, 26, 0.72);
}

.page-about .about-team__note {
  padding-left: 14px;
  border-left: 3px solid var(--orange);
}

/* ---------- 公开信息 ---------- */
.page-about .about-trust {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
}

.page-about .about-trust__card {
  padding: 16px 18px;
  background: rgba(34, 45, 48, 0.72);
  border: 2px solid rgba(244, 240, 230, 0.16);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .about-trust__card h3 {
  margin: 0 0 8px;
  font-family: var(--ff-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .about-trust__card p {
  margin: 0 0 6px;
  font-size: 14px;
  line-height: 1.68;
}

.page-about .about-trust__card--accent {
  border-color: var(--orange);
}

.page-about .about-trust__meta {
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--amber);
}

.page-about .about-facts {
  margin: 0 0 16px;
  border-top: 1px solid rgba(244, 240, 230, 0.18);
}

.page-about .about-facts__row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(244, 240, 230, 0.18);
}

.page-about .about-facts dt {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cool);
}

.page-about .about-facts dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--cream);
}

.page-about .about-facts .copy-chip {
  background: transparent;
  border: 2px solid rgba(244, 240, 230, 0.28);
  color: var(--cyan);
  padding: 6px 10px;
  font-family: var(--ff-mono);
  font-size: 13px;
  cursor: pointer;
  max-width: 100%;
  overflow-wrap: anywhere;
  text-align: left;
}

.page-about .about-facts .copy-chip:hover,
.page-about .about-facts .copy-chip[data-copied] {
  border-color: var(--orange);
  color: var(--amber);
}

.page-about .about-copy-status {
  min-height: 18px;
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--cyan);
}

.page-about .about-trust__note {
  margin: 0;
  padding-left: 14px;
  border-left: 3px solid var(--cyan);
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 240, 230, 0.8);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding: 44px 0 56px;
  background:
    repeating-linear-gradient(115deg, rgba(255, 106, 42, 0.14) 0 2px, transparent 2px 40px),
    var(--ink-green);
  color: var(--cream);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 22px;
}

.page-about .about-cta__title {
  margin: 8px 0 10px;
  font-family: var(--ff-display);
  font-size: clamp(24px, 5.5vw, 36px);
  font-weight: 800;
  line-height: 1.18;
}

.page-about .about-cta__text p:last-child {
  margin: 0;
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(244, 240, 230, 0.82);
}

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

.page-about .about-cta__links a {
  display: block;
  padding: 13px 16px;
  border: 2px solid rgba(244, 240, 230, 0.22);
  color: var(--cream);
  text-decoration: none;
  font-family: var(--ff-mono);
  font-size: 13.5px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .about-cta__links a:hover {
  border-color: var(--orange);
  color: var(--amber);
  transform: translateX(3px);
}

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

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

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

  .page-about .about-facts__row {
    grid-template-columns: 130px 1fr;
    align-items: center;
    gap: 12px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 40px 0 72px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 56px;
    align-items: start;
  }

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

  .page-about .about-chapter__inner {
    grid-template-columns: minmax(230px, 300px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

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

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

  .page-about .about-check {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 28px;
    align-items: center;
  }

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

  .page-about .about-version {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .page-about .about-version__mark {
    flex-direction: column;
    gap: 4px;
  }

  .page-about .about-version__tag {
    font-size: 34px;
  }

  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
    gap: 48px;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-map__list a,
  .page-about .about-line,
  .page-about .about-stat,
  .page-about .about-cta__links a {
    transition: none;
  }

  .page-about .about-line:hover,
  .page-about .about-map__list a:hover,
  .page-about .about-cta__links a:hover,
  .page-about .about-stat:hover {
    transform: none;
  }
}
<<<END>>>