.page-about {
  --about-line: rgba(201, 169, 106, 0.26);
  --about-soft: rgba(169, 184, 172, 0.18);
  --about-pad: clamp(48px, 8.5vw, 108px);
  --about-gap: clamp(20px, 3.2vw, 34px);
  background: var(--ink-deep);
  color: var(--dew);
  font-family: var(--font-body);
  overflow-x: clip;
}

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

.page-about figure {
  margin: 0;
}

/* ---------- 面包屑 ---------- */
.page-about .crumbs {
  max-width: var(--shell);
  margin: 0 auto;
  padding: calc(var(--header-h) + 14px) var(--gutter) 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lichen);
}

.page-about .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .crumbs li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-about .crumbs li + li::before {
  content: "/";
  color: var(--gold);
  opacity: 0.65;
}

.page-about .crumbs a {
  color: var(--lichen);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-about .crumbs a:hover,
.page-about .crumbs a:focus-visible {
  color: var(--gold);
}

.page-about .crumbs [aria-current="page"] {
  color: var(--dew);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 4.5vw, 54px) var(--gutter) var(--about-pad);
  background:
    radial-gradient(115% 90% at 84% 4%, rgba(28, 58, 44, 0.92) 0%, rgba(14, 31, 24, 0) 62%),
    radial-gradient(80% 70% at 0% 100%, rgba(58, 68, 64, 0.5) 0%, rgba(14, 31, 24, 0) 62%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(201, 169, 106, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(201, 169, 106, 0.07) 1px, transparent 1px);
  background-size: 78px 78px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 88%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 88%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  max-width: var(--shell);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 58px);
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(32px, 6.6vw, 62px);
  line-height: 1.22;
  letter-spacing: 0.02em;
  color: var(--dew);
}

.page-about .about-hero__intro {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.85;
  color: var(--lichen);
}

.page-about .about-hero__index {
  margin: clamp(28px, 4vw, 40px) 0 0;
  padding: clamp(16px, 2vw, 20px) 0 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-hero__index a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 14px;
  color: var(--lichen);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-about .about-hero__index a:hover,
.page-about .about-hero__index a:focus-visible {
  color: var(--dew);
}

.page-about .about-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .about-hero__figure {
  padding: 10px;
  border: 1px solid var(--about-line);
  background: rgba(28, 58, 44, 0.42);
}

.page-about .about-hero__figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------- 通用章节 ---------- */
.page-about .about-section {
  padding: var(--about-pad) var(--gutter);
  border-top: 1px solid var(--about-soft);
}

.page-about .about-section__inner {
  max-width: var(--shell);
  margin: 0 auto;
}

.page-about .about-section--deep {
  background: var(--ink-deep);
}

.page-about .about-section--moss {
  background: var(--moss);
}

.page-about .about-section--slate {
  background: var(--slate);
}

.page-about .about-section--dew {
  --about-line: rgba(16, 21, 18, 0.16);
  --about-soft: rgba(16, 21, 18, 0.1);
  background: var(--dew);
  color: var(--ink);
}

.page-about .about-h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(26px, 4.4vw, 40px);
  line-height: 1.32;
  letter-spacing: 0.02em;
  color: var(--dew);
}

.page-about .about-section--dew .about-h2 {
  color: var(--ink);
}

.page-about .about-section--dew .label {
  color: var(--brown);
}

.page-about .about-section__intro {
  margin: 18px 0 0;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--lichen);
}

/* ---------- 起点 ---------- */
.page-about .about-origin {
  margin-top: clamp(30px, 4.5vw, 52px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 54px);
}

.page-about .about-origin__text p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--lichen);
}

.page-about .about-origin__text .about-origin__lead {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 24px);
  line-height: 1.62;
  color: var(--dew);
  margin-bottom: 22px;
}

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

.page-about .about-pillar {
  padding: clamp(20px, 3vw, 28px);
  background: var(--ink-deep);
}

.page-about .about-pillar__n {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--petal);
}

.page-about .about-pillar h3 {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--dew);
}

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

.page-about .about-pillar__link {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 169, 106, 0.4);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-pillar__link:hover,
.page-about .about-pillar__link:focus-visible {
  color: var(--petal);
  border-color: var(--petal);
}

/* ---------- 时间线 ---------- */
.page-about .tl-list {
  margin: clamp(30px, 4.5vw, 48px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 22px 30px;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--moss);
  border: 1px solid var(--gold);
  z-index: 1;
}

.page-about .tl-item::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 20px;
  bottom: 0;
  width: 1px;
  background: var(--about-line);
}

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

.page-about .tl-item:last-child::after {
  display: none;
}

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

.page-about .tl-year span {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.8vw, 26px);
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-about .tl-head {
  margin: 0;
}

.page-about .tl-trigger {
  font-family: var(--font-display);
  font-size: clamp(17px, 2.1vw, 20px);
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--dew);
  text-align: left;
}

.page-about .tl-body .accordion__body p {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--lichen);
}

.page-about .tl-figure {
  margin-top: clamp(32px, 5vw, 54px);
  padding: 10px;
  border: 1px solid var(--about-line);
  background: rgba(14, 31, 24, 0.45);
}

.page-about .tl-figure img {
  width: 100%;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

.page-about .tl-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--lichen);
}

/* ---------- 数字信息岛 ---------- */
.page-about .figures__grid {
  margin-top: clamp(30px, 4.5vw, 50px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.page-about .fig {
  padding: 18px 16px 20px;
  background: rgba(14, 31, 24, 0.42);
  border-top: 1px solid var(--about-line);
}

.page-about .fig__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5.4vw, 52px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--dew);
}

.page-about .fig__unit {
  margin-left: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-about .fig__cap {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--lichen);
}

/* ---------- 内容体系 ---------- */
.page-about .system__grid {
  margin-top: clamp(28px, 4.5vw, 48px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .system__text p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(16, 21, 18, 0.78);
}

.page-about .system__text .system__lead {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 23px);
  line-height: 1.62;
  color: var(--ink);
  margin-bottom: 20px;
}

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

.page-about .system__list li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .system__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--brown);
}

.page-about .system__v {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ink);
  text-align: right;
}

.page-about .system__d {
  grid-column: 1 / -1;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(16, 21, 18, 0.66);
}

/* ---------- 团队 ---------- */
.page-about .team__grid {
  margin-top: clamp(28px, 4.5vw, 48px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .team__text > p {
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--lichen);
}

.page-about .about-roles {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-roles li {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 4px 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-roles__n {
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--gold);
}

.page-about .about-roles__t {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--dew);
}

.page-about .about-roles__d {
  grid-column: 2 / -1;
  font-size: 14px;
  line-height: 1.7;
  color: var(--lichen);
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.page-about .about-steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  padding: 12px 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--lichen);
  border-bottom: 1px dashed rgba(201, 169, 106, 0.22);
}

.page-about .about-steps li:last-child {
  border-bottom: 0;
}

.page-about .about-steps__n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--about-line);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
  flex: none;
}

.page-about .team__figure {
  padding: 10px;
  border: 1px solid var(--about-line);
  background: rgba(28, 58, 44, 0.4);
  align-self: start;
}

.page-about .team__figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .team__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--lichen);
}

/* ---------- 合作与质量 ---------- */
.page-about .partners__grid {
  margin-top: clamp(28px, 4.5vw, 48px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .partner-card {
  padding: clamp(22px, 3.2vw, 32px);
  background: var(--moss);
}

.page-about .partner-card__n {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--apricot);
}

.page-about .partner-card h3 {
  margin: 12px 0 10px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--dew);
}

.page-about .partner-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--lichen);
}

/* ---------- 联系服务 ---------- */
.page-about .service__grid {
  margin-top: clamp(28px, 4.5vw, 48px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .service__text p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--lichen);
}

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

.page-about .service__contact {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--about-line);
  background: rgba(28, 58, 44, 0.42);
}

.page-about .service__row {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 10px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(201, 169, 106, 0.16);
}

.page-about .service__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .service__v {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--dew);
  word-break: break-word;
}

.page-about .service__contact .copy {
  text-align: left;
  word-break: break-word;
}

.page-about .service__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--lichen);
}

.page-about .about-section--last {
  border-bottom: 0;
}

/* ---------- 中等屏 ---------- */
@media (min-width: 720px) {
  .page-about .about-pillars {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .figures__grid {
    gap: 20px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.02fr 0.98fr;
    align-items: end;
  }

  .page-about .about-hero__figure {
    transform: translateY(-14px);
  }

  .page-about .about-origin {
    grid-template-columns: 0.92fr 1.08fr;
    align-items: start;
  }

  .page-about .system__grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }

  .page-about .team__grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }

  .page-about .service__grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-about .tl-item {
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 36px;
    padding-left: 0;
    padding-bottom: 28px;
  }

  .page-about .tl-item::before {
    left: 111px;
    top: 11px;
  }

  .page-about .tl-item::after {
    left: 114px;
    top: 24px;
  }

  .page-about .tl-year {
    text-align: right;
    margin-bottom: 0;
  }

  .page-about .figures__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px 34px;
  }

  .page-about .fig:nth-child(2) {
    margin-top: 38px;
  }

  .page-about .fig:nth-child(4) {
    margin-top: -14px;
  }

  .page-about .fig:nth-child(5) {
    margin-top: 22px;
  }

  .page-about .fig:nth-child(6) {
    margin-top: 54px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-origin {
    grid-template-columns: 0.86fr 1.14fr;
  }

  .page-about .figures__grid {
    gap: 34px 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0.01ms !important;
  }
}
<<<END>>>