.page-about {
  --about-rail: 200px;
  --about-hairline: rgba(58, 53, 44, 1);
  --about-soft-line: rgba(201, 162, 39, 0.28);
  background: var(--gd-ink);
  color: var(--gd-paper);
  overflow-x: hidden;
}

.page-about .about-crumbs {
  padding-top: clamp(20px, 4vw, 34px);
}

.page-about .gd-crumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--gd-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gd-mist);
}

.page-about .gd-crumbs a {
  color: var(--gd-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--gd-ease), border-color 160ms var(--gd-ease);
}

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

.page-about .gd-crumbs-sep {
  color: var(--gd-gold-deep);
}

.page-about .gd-crumbs-current {
  color: var(--gd-paper);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(32px, 5vw, 64px) 0 clamp(48px, 7vw, 104px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(58% 76% at 14% 4%, rgba(201, 162, 39, 0.16), transparent 62%),
    radial-gradient(42% 60% at 92% 88%, rgba(179, 58, 43, 0.12), transparent 70%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    102deg,
    rgba(245, 239, 225, 0.035) 0 1px,
    transparent 1px 8px
  );
  pointer-events: none;
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  align-items: end;
}

.page-about .about-hero-copy .gd-eyebrow {
  margin-bottom: 18px;
}

.page-about .about-hero-copy .gd-h1 {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  color: var(--gd-paper);
  letter-spacing: 0.01em;
}

.page-about .about-hero-copy .gd-lede {
  margin: 0;
  color: var(--gd-paper-gray);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
}

.page-about .about-hero-facts {
  list-style: none;
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-hairline);
  border-top: 1px solid var(--about-soft-line);
  border-bottom: 1px solid var(--about-hairline);
}

.page-about .about-hero-facts li {
  background: var(--gd-ink);
  padding: 16px 12px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-num {
  font-family: var(--gd-font-mono);
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.05;
  color: var(--gd-gold-lift);
  letter-spacing: -0.02em;
}

.page-about .about-num small {
  font-size: 0.55em;
  color: var(--gd-gold);
  margin-left: 2px;
}

.page-about .about-fact-label {
  font-size: 12px;
  line-height: 1.5;
  color: var(--gd-mist);
  letter-spacing: 0.04em;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

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

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.04) brightness(0.94);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), calc(100% - 44px) 100%, 0 100%);
}

.page-about .about-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, rgba(201, 162, 39, 0.16), transparent 42%, rgba(18, 18, 18, 0.62));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), calc(100% - 44px) 100%, 0 100%);
  pointer-events: none;
}

.page-about .gd-media-caption {
  margin-top: 12px;
  font-family: var(--gd-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gd-mist);
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  background: var(--gd-coal);
  border-top: 1px solid var(--about-hairline);
  border-bottom: 1px solid var(--about-hairline);
  padding: clamp(52px, 7vw, 108px) 0;
}

.page-about .about-origin-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 48px);
}

.page-about .about-origin-side .gd-eyebrow {
  margin: 0 0 16px;
}

.page-about .about-anno {
  display: inline-block;
  font-family: var(--gd-font-mono);
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--gd-gold-deep);
  writing-mode: vertical-rl;
  padding-top: 6px;
}

.page-about .about-origin-body .gd-h2 {
  margin: 0 0 clamp(18px, 2.4vw, 28px);
  color: var(--gd-paper);
}

.page-about .about-origin-body .gd-prose p {
  color: var(--gd-paper-gray);
  font-size: 15px;
  line-height: 1.92;
}

.page-about .about-origin-body .gd-prose p + p {
  margin-top: 16px;
}

/* ---------- 服务半径 ---------- */
.page-about .about-reach {
  padding: clamp(52px, 7vw, 108px) 0;
}

.page-about .about-reach-grid {
  display: grid;
  gap: clamp(26px, 4vw, 60px);
  align-items: center;
}

.page-about .about-reach-media {
  margin: 0;
  position: relative;
  border-left: 2px solid var(--gd-gold-deep);
  padding-left: 0;
}

.page-about .about-reach-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.05) brightness(0.9);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 36px), calc(100% - 36px) 100%, 0 100%);
}

.page-about .about-reach-copy .gd-eyebrow {
  margin: 0 0 16px;
}

.page-about .about-reach-copy .gd-h2 {
  margin: 0 0 clamp(16px, 2vw, 22px);
  color: var(--gd-paper);
}

.page-about .about-reach-copy > p {
  margin: 0 0 14px;
  color: var(--gd-paper-gray);
  font-size: 15px;
  line-height: 1.9;
}

.page-about .about-reach-list {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-hairline);
  border-top: 1px solid var(--about-soft-line);
}

.page-about .about-reach-item {
  background: var(--gd-ink);
  padding: 16px 18px;
}

.page-about .about-reach-item dt {
  font-family: var(--gd-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gd-gold);
  margin-bottom: 8px;
}

.page-about .about-reach-item dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gd-paper-gray);
}

/* ---------- 团队与协作 ---------- */
.page-about .about-team {
  background: linear-gradient(180deg, var(--gd-ink) 0%, var(--gd-coal) 68%, var(--gd-ink) 100%);
  padding: clamp(52px, 7vw, 108px) 0;
}

.page-about .about-team-head {
  max-width: 62ch;
  margin-bottom: clamp(30px, 4vw, 52px);
}

.page-about .about-team-head .gd-eyebrow {
  margin: 0 0 16px;
}

.page-about .about-team-head .gd-h2 {
  margin: 0 0 18px;
  color: var(--gd-paper);
}

.page-about .about-team-head .gd-lede {
  margin: 0;
  color: var(--gd-mist);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-team-main {
  display: grid;
  gap: clamp(26px, 3.6vw, 44px);
}

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

.page-about .about-bar {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  grid-template-areas:
    "num name"
    "track track"
    "role role";
  gap: 10px 16px;
  padding: 18px 20px 20px;
  background: rgba(27, 26, 24, 0.86);
  border-left: 2px solid var(--gd-gold-deep);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  transition: background 240ms var(--gd-ease), border-color 240ms var(--gd-ease);
}

.page-about .about-bar:hover,
.page-about .about-bar:focus-within {
  background: rgba(58, 53, 44, 0.62);
  border-left-color: var(--gd-gold-lift);
}

.page-about .about-bar-num {
  grid-area: num;
  font-family: var(--gd-font-mono);
  font-size: clamp(28px, 3.6vw, 38px);
  line-height: 1;
  color: var(--gd-gold-lift);
  letter-spacing: -0.02em;
}

.page-about .about-bar-name {
  grid-area: name;
  align-self: center;
  font-family: var(--gd-font-display);
  font-size: 17px;
  letter-spacing: 0.04em;
  color: var(--gd-paper);
}

.page-about .about-bar-track {
  grid-area: track;
  display: block;
  height: 7px;
  background: rgba(58, 53, 44, 0.9);
  overflow: hidden;
}

.page-about .about-bar-fill {
  display: block;
  height: 100%;
  width: var(--w, 50%);
  background: linear-gradient(90deg, var(--gd-gold-deep), var(--gd-gold-lift));
  transition: filter 200ms var(--gd-ease);
}

.page-about .about-bar:hover .about-bar-fill,
.page-about .about-bar:focus-within .about-bar-fill {
  filter: brightness(1.16);
}

.page-about .about-bar-role {
  grid-area: role;
  font-size: 13px;
  line-height: 1.75;
  color: var(--gd-mist);
}

.page-about .about-team-aside {
  display: grid;
  gap: 18px;
  align-content: start;
}

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

.page-about .about-team-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.78) contrast(1.05) brightness(0.9);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.page-about .about-team-partner {
  padding: 20px;
  background: rgba(18, 18, 18, 0.7);
  border-top: 1px solid var(--about-soft-line);
}

.page-about .about-tagline {
  margin: 0 0 10px;
  font-family: var(--gd-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gd-cinnabar);
}

.page-about .about-team-partner p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gd-paper-gray);
}

/* ---------- 发展节点 ---------- */
.page-about .about-milestones {
  padding: clamp(52px, 7vw, 108px) 0;
  border-top: 1px solid var(--about-hairline);
}

.page-about .about-mile-grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 52px);
  align-items: start;
}

.page-about .about-mile-rail .gd-eyebrow {
  margin: 0;
}

.page-about .about-rail-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0 0 0 16px;
  border-left: 1px solid var(--about-hairline);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.page-about .about-rail-list a {
  display: inline-block;
  font-family: var(--gd-font-mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--gd-mist);
  text-decoration: none;
  padding: 3px 0;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--gd-ease), border-color 160ms var(--gd-ease);
}

.page-about .about-rail-list a:hover,
.page-about .about-rail-list a:focus-visible {
  color: var(--gd-gold-lift);
  border-bottom-color: var(--gd-gold);
}

.page-about .about-mile-body .gd-h2 {
  margin: 0 0 clamp(24px, 3vw, 36px);
  color: var(--gd-paper);
}

.page-about .about-nodes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-about .about-node {
  position: relative;
  padding: clamp(20px, 2.8vw, 30px);
  background: rgba(27, 26, 24, 0.74);
  border-left: 2px solid var(--gd-bronze);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
  scroll-margin-top: 110px;
  transition: border-color 240ms var(--gd-ease), background 240ms var(--gd-ease);
}

.page-about .about-node:hover {
  border-left-color: var(--gd-gold);
  background: rgba(58, 53, 44, 0.55);
}

.page-about .about-node-year {
  display: inline-block;
  font-family: var(--gd-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gd-ink);
  background: var(--gd-gold);
  padding: 3px 10px;
  margin-bottom: 14px;
}

.page-about .about-node .gd-h3 {
  margin: 0 0 10px;
  color: var(--gd-paper);
  font-size: 19px;
}

.page-about .about-node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--gd-paper-gray);
}

/* ---------- 服务标准与荣誉 ---------- */
.page-about .about-standard {
  background: var(--gd-coal);
  border-top: 1px solid var(--about-hairline);
  padding: clamp(52px, 7vw, 108px) 0;
}

.page-about .about-std-head {
  max-width: 64ch;
  margin-bottom: clamp(26px, 3.4vw, 42px);
}

.page-about .about-std-head .gd-eyebrow {
  margin: 0 0 16px;
}

.page-about .about-std-head .gd-h2 {
  margin: 0 0 18px;
  color: var(--gd-paper);
}

.page-about .about-std-head .gd-lede {
  margin: 0;
  color: var(--gd-mist);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-std-scroll {
  overflow-x: auto;
  border-top: 1px solid var(--about-soft-line);
}

.page-about .about-std-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  text-align: left;
}

.page-about .about-std-table th,
.page-about .about-std-table td {
  padding: 16px 14px;
  border-bottom: 1px solid var(--about-hairline);
  font-size: 14px;
  line-height: 1.6;
}

.page-about .about-std-table thead th {
  font-family: var(--gd-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gd-gold-deep);
  font-weight: 500;
  white-space: nowrap;
}

.page-about .about-std-table tbody th {
  color: var(--gd-paper);
  font-weight: 500;
  white-space: nowrap;
}

.page-about .about-std-table tbody td {
  color: var(--gd-mist);
}

.page-about .about-std-table tbody td:last-child {
  font-family: var(--gd-font-mono);
  color: var(--gd-gold-lift);
  white-space: nowrap;
}

.page-about .about-honors {
  list-style: none;
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-honors li {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--about-hairline);
}

.page-about .about-honor-year {
  font-family: var(--gd-font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gd-cinnabar);
  flex: 0 0 auto;
}

.page-about .about-honor-name {
  font-family: var(--gd-font-display);
  font-size: 17px;
  letter-spacing: 0.03em;
  color: var(--gd-paper);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding: clamp(44px, 6vw, 84px) 0 clamp(56px, 7vw, 100px);
}

.page-about .about-next .gd-h3 {
  margin: 0 0 clamp(20px, 2.6vw, 30px);
  color: var(--gd-paper);
}

.page-about .about-next-links {
  display: grid;
  gap: 1px;
  background: var(--about-hairline);
  border-top: 1px solid var(--about-soft-line);
  border-bottom: 1px solid var(--about-hairline);
}

.page-about .about-next-links a {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  background: var(--gd-ink);
  text-decoration: none;
  transition: background 200ms var(--gd-ease);
}

.page-about .about-next-links a:hover,
.page-about .about-next-links a:focus-visible {
  background: var(--gd-coal);
}

.page-about .about-next-kicker {
  font-family: var(--gd-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gd-gold);
}

.page-about .about-next-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--gd-paper-gray);
}

/* ---------- 响应式 ---------- */
@media (max-width: 639px) {
  .page-about .about-hero-facts {
    grid-template-columns: 1fr;
  }

  .page-about .about-hero-media img,
  .page-about .about-hero-media::after {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  }

  .page-about .about-bar {
    grid-template-columns: 52px minmax(0, 1fr);
    padding: 16px 16px 18px;
  }

  .page-about .about-honors li {
    flex-direction: column;
    gap: 6px;
  }
}

@media (min-width: 760px) {
  .page-about .about-next-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-about .about-origin-grid {
    grid-template-columns: 180px minmax(0, 1fr);
  }

  .page-about .about-reach-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

  .page-about .about-team-main {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-mile-grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
  }

  .page-about .about-mile-rail {
    position: sticky;
    top: 108px;
  }

  .page-about .about-rail-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 12px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-next-links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-bar,
  .page-about .about-bar-fill,
  .page-about .about-node,
  .page-about .about-next-links a {
    transition: none;
  }
}

.page-about {
  --w: 1rem;
}