.page-about {
  --about-line: rgba(30, 23, 18, 0.16);
  --about-line-light: rgba(251, 246, 236, 0.24);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(28px, 5vw, 64px) 0 clamp(32px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__inner {
  display: grid;
  gap: 18px;
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(30px, 6.6vw, 58px);
  line-height: 1.06;
  color: var(--ink);
  max-width: 15em;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 42em;
  color: var(--taupe);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-fact {
  background: var(--cream);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 3.4vw, 28px);
  font-weight: 700;
  color: var(--orange);
  letter-spacing: -0.01em;
}

.page-about .about-fact__label {
  font-size: 13px;
  color: var(--taupe);
  line-height: 1.5;
}

@media (min-width: 720px) {
  .page-about .about-hero__inner {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }
  .page-about .about-hero .breadcrumb { grid-column: 1 / -1; }
  .page-about .about-hero .eyebrow { grid-column: 1 / -1; }
  .page-about .about-hero__title { grid-column: 1 / 9; }
  .page-about .about-hero__lede { grid-column: 3 / 10; }
  .page-about .about-hero__facts { grid-column: 1 / -1; grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ---------- 时间轴 ---------- */
.page-about .timeline-section .section-head {
  margin-bottom: 28px;
}

.page-about .tl-wrap {
  margin-top: 8px;
}

.page-about .timeline {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .timeline__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .timeline__scale {
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
}

.page-about .timeline__year {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-about .timeline__dot {
  width: 9px;
  height: 9px;
  background: var(--orange);
  border-radius: 50%;
  display: block;
}

.page-about .timeline__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.6vw, 26px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .timeline__text {
  margin: 0;
  max-width: 46em;
  color: var(--ink);
  opacity: 0.82;
  line-height: 1.8;
}

.page-about .eyebrow--plain::before {
  display: none;
}

@media (min-width: 760px) {
  .page-about .timeline__item {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 44px;
    padding: 32px 0;
  }
  .page-about .timeline__scale {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-left: 0;
  }
  .page-about .timeline__scale::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 24px;
    bottom: -62px;
    width: 1px;
    background: var(--line);
  }
  .page-about .timeline__item:last-child .timeline__scale::before {
    display: none;
  }
  .page-about .timeline__year {
    padding-left: 18px;
  }
}

/* ---------- 认证等级 ---------- */
.page-about .cert-section .section-head {
  margin-bottom: 30px;
}

.page-about .cert-bars {
  display: grid;
  gap: 6px;
  margin-bottom: 34px;
}

.page-about .cert-bar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 16px;
  color: var(--cream);
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.02em;
  min-width: 190px;
  box-sizing: border-box;
}

.page-about .cert-bar--base {
  width: 100%;
  background: var(--orange);
}

.page-about .cert-bar--plus {
  width: 68%;
  background: var(--blue);
}

.page-about .cert-bar--gold {
  width: 42%;
  background: var(--navy);
}

.page-about .cert-bar__num {
  font-size: 13px;
  letter-spacing: 0.04em;
  opacity: 0.92;
}

.page-about .cert-detail {
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .cert-card {
  background: var(--cream-2);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .cert-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .cert-card__lead {
  margin: 0;
  color: var(--taupe);
  font-size: 15px;
}

.page-about .cert-card__list {
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .cert-card__list > div {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.page-about .cert-card__list dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--blue);
  padding-top: 2px;
}

.page-about .cert-card__list dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-about .cert-card__foot {
  margin: 4px 0 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--taupe);
}

.page-about .cert-tail {
  margin: 26px 0 0;
  font-size: 15px;
  color: var(--taupe);
  line-height: 1.8;
}

.page-about .cert-tail a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 860px) {
  .page-about .cert-detail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .cert-bar {
    min-width: 240px;
  }
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  align-items: start;
  row-gap: 32px;
}

.page-about .team-title {
  margin: 10px 0 16px;
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .team-lead {
  margin: 0 0 24px;
}

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

.page-about .team-role {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .team-role__num {
  font-size: 22px;
  font-weight: 700;
  color: var(--blue);
  line-height: 1.2;
}

.page-about .team-role__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--ink);
}

.page-about .team-role__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--taupe);
}

.page-about .team-note {
  margin: 22px 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--green);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  opacity: 0.86;
}

.page-about .team-media {
  display: grid;
  gap: 16px;
}

.page-about .team-panel .panel__body {
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 服务网络 ---------- */
.page-about .network-section .section-head {
  margin-bottom: 26px;
}

.page-about .network-banner {
  margin-bottom: 30px;
}

.page-about .network-grid {
  align-items: start;
  row-gap: 30px;
}

.page-about .network-map {
  display: grid;
  gap: 12px;
}

.page-about .radius-map {
  width: 100%;
  max-width: 340px;
  height: auto;
  display: block;
}

.page-about .radius-map__rings circle {
  fill: none;
  stroke: rgba(30, 23, 18, 0.16);
  stroke-width: 1;
}

.page-about .radius-map__nodes circle {
  fill: var(--orange);
  opacity: 0.85;
}

.page-about .radius-map__nodes circle:first-child {
  fill: var(--blue);
  opacity: 1;
}

.page-about .network-map__note {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--taupe);
}

.page-about .hub-grid {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .hub__node {
  position: relative;
  background: var(--cream-2);
  padding: 14px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: default;
  transition: background 200ms ease;
}

.page-about .hub__node:hover,
.page-about .hub__node:focus-visible {
  background: var(--blue-soft);
  outline: none;
}

.page-about .hub__city {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--ink);
}

.page-about .hub__zone {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--taupe);
}

.page-about .hub__pop {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 100%;
  z-index: 6;
  background: var(--navy);
  color: var(--cream);
  font-size: 13px;
  line-height: 1.6;
  padding: 12px 14px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms ease;
}

.page-about .hub__node:hover .hub__pop,
.page-about .hub__node:focus-visible .hub__pop,
.page-about .hub__node:focus-within .hub__pop {
  opacity: 1;
  visibility: visible;
}

.page-about .network-desk {
  margin-top: 30px;
}

/* ---------- 合作伙伴 ---------- */
.page-about .partner-section .section-head {
  margin-bottom: 28px;
}

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

.page-about .partner-card {
  background: var(--cream);
  padding: 24px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-about .partner-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
}

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

.page-about .partner-card__foot {
  margin-top: auto;
  padding-top: 7px;
}

.page-about .partner-card__foot a {
  color: var(--blue);
  font-size: 14px;
  text-decoration: underline;
  text-underline-offset: 4px;
}

@media (min-width: 860px) {
  .page-about .partner-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
  .page-about .partner-card:nth-child(2) {
    padding-top: 42px;
  }
}

/* ---------- 规划 ---------- */
.page-about .next-section {
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-about .section-head--light .section-head__title,
.page-about .section-head--light .section-head__note {
  color: var(--cream);
}

.page-about .section-head--light {
  border-bottom-color: var(--about-line-light);
}

.page-about .next-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line-light);
  border-top: 1px solid var(--about-line-light);
  border-bottom: 1px solid var(--about-line-light);
}

.page-about .next-item {
  background: var(--navy);
  padding: 20px 16px;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
}

.page-about .next-item__idx {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--orange);
  padding-top: 3px;
}

.page-about .next-item__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.35;
  color: var(--cream);
}

.page-about .next-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(251, 246, 236, 0.74);
}

.page-about .next-links {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .next-links .btn--outline {
  border-color: var(--about-line-light);
  color: var(--cream);
}

@media (min-width: 860px) {
  .page-about .next-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .next-item {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 26px 22px;
  }
}

/* ---------- 通用微调 ---------- */
.page-about .figure__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .filter-bar {
  flex-wrap: wrap;
}

@media (max-width: 480px) {
  .page-about .cert-bar {
    min-width: 0;
  }
  .page-about .cert-bar--plus {
    width: 82%;
  }
  .page-about .cert-bar--gold {
    width: 62%;
  }
  .page-about .team-role {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 12px;
  }
  .page-about .next-item {
    grid-template-columns: 36px minmax(0, 1fr);
  }
}