.page-about {
  --about-gold-soft: rgba(201, 162, 39, 0.18);
  --about-deep-soft: rgba(10, 31, 68, 0.06);
  --about-shadow: 0 10px 30px rgba(10, 31, 68, 0.12);
  color: var(--lb-ink);
  overflow-x: clip;
}

/* 通用眉题、容器基础 */
.page-about .lb-kicker {
  margin: 0 0 12px;
}

.page-about .lb-annotate {
  color: var(--lb-gray);
  font-family: var(--lb-font-body);
  font-size: 0.925rem;
  line-height: 1.75;
}

/* 封面区 */
.page-about .about-hero {
  background: var(--lb-paper);
  padding: 48px 20px 40px;
  position: relative;
}

.page-about .about-hero__inner {
  max-width: var(--lb-content);
  margin: 0 auto;
  display: grid;
  gap: 32px;
}

.page-about .about-hero__lead {
  max-width: 820px;
}

.page-about .about-hero__title {
  font-family: var(--lb-font-head);
  font-weight: 900;
  font-size: clamp(1.75rem, 5vw, 3.35rem);
  line-height: 1.16;
  color: var(--lb-deep);
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}

.page-about .about-hero__subtitle {
  font-family: var(--lb-font-body);
  font-size: 1.03rem;
  line-height: 1.85;
  color: #333;
  margin: 0;
  max-width: 720px;
}

.page-about .about-hero__side {
  display: grid;
  gap: 20px;
}

.page-about .about-quickfacts {
  margin: 0;
  border-left: 3px solid var(--lb-gold);
  background: var(--lb-deep);
  padding: 22px 22px 10px;
  border-radius: 0 12px 12px 0;
}

.page-about .about-quickfacts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.page-about .about-quickfacts__row:last-child {
  border-bottom: none;
}

.page-about .about-quickfacts dt {
  font-family: var(--lb-font-head);
  font-size: 0.82rem;
  color: var(--lb-silver);
  letter-spacing: 0.08em;
}

.page-about .about-quickfacts dd {
  margin: 0;
  font-family: var(--lb-font-data);
  font-weight: 700;
  color: var(--lb-gold);
  font-size: 1.08rem;
}

.page-about .about-hero__note {
  max-width: 420px;
}

.page-about .about-hero__visual {
  position: relative;
  margin-top: 8px;
}

.page-about .about-hero__img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 0 20px 0 20px;
  border: 2px solid var(--lb-deep);
  box-shadow: 14px 14px 0 rgba(10, 31, 68, 0.14);
}

.page-about .about-hero__watermark {
  position: absolute;
  top: -14px;
  right: 14px;
  background: var(--lb-red);
  color: #fff;
  font-family: var(--lb-font-data);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 6px 12px;
  transform: rotate(3deg);
  border-radius: 4px;
}

/* 面包屑 */
.page-about .about-crumbs {
  max-width: var(--lb-content);
  margin: 0 auto;
  padding: 18px 20px 0;
}

/* 区块通用 */
.page-about .about-section {
  padding: 56px 20px;
}

.page-about .about-section > h2,
.page-about .about-section > .about-coverage__grid h2,
.page-about .about-timeline__head h2,
.page-about .about-service__main h2,
.page-about .about-credential__head h2 {
  font-family: var(--lb-font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.4vw, 2.5rem);
  line-height: 1.25;
  color: var(--lb-deep);
  margin: 0 0 18px;
  letter-spacing: -0.01em;
}

/* 数据覆盖区 */
.page-about .about-coverage {
  background: #fff;
  border-top: 1px solid var(--lb-line);
  border-bottom: 1px solid var(--lb-line);
}

.page-about .about-coverage__grid {
  max-width: var(--lb-content);
  margin: 0 auto;
  display: grid;
  gap: 40px;
  grid-template-columns: 1fr;
}

.page-about .about-coverage__main {
  min-width: 0;
}

.page-about .about-coverage__intro {
  font-family: var(--lb-font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: #333;
  max-width: 680px;
  margin: 0 0 28px;
}

.page-about .about-coverage__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}

.page-about .about-stat {
  background: var(--lb-paper);
  border: 1px solid var(--lb-line);
  border-left: 4px solid var(--lb-gold);
  padding: 16px 12px;
  border-radius: 0 10px 10px 0;
}

.page-about .about-stat__num {
  font-family: var(--lb-font-data);
  font-weight: 700;
  font-size: 1.65rem;
  line-height: 1.2;
  color: var(--lb-deep);
  display: block;
}

.page-about .about-stat__label {
  font-family: var(--lb-font-head);
  font-size: 0.78rem;
  color: var(--lb-gray);
  letter-spacing: 0.04em;
  display: block;
  margin-top: 6px;
}

.page-about .about-coverage__bars {
  background: var(--lb-deep);
  padding: 22px 20px 20px;
  border-radius: 0 16px 16px 0;
  display: grid;
  gap: 12px;
  box-shadow: 8px 8px 0 rgba(201, 162, 39, 0.25);
}

.page-about .about-bar {
  display: grid;
  grid-template-columns: 46px 1fr 44px;
  gap: 10px;
  align-items: center;
}

.page-about .about-bar__year {
  font-family: var(--lb-font-data);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--lb-silver);
}

.page-about .about-bar__track {
  background: rgba(255, 255, 255, 0.16);
  height: 10px;
  display: block;
  border-radius: 999px;
  overflow: hidden;
}

.page-about .about-bar__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--lb-gold), #E0BB4F);
  border-radius: 999px;
}

.page-about .about-bar__val {
  font-family: var(--lb-font-data);
  font-size: 0.82rem;
  color: var(--lb-gold);
  text-align: right;
}

.page-about .about-coverage__aside .about-panel {
  height: 100%;
}

.page-about .about-panel {
  background: var(--lb-paper);
  border: 2px solid var(--lb-deep);
  border-radius: 0 14px 14px 0;
  padding: 24px 22px;
  position: relative;
}

.page-about .about-panel::before {
  content: "";
  position: absolute;
  top: 14px;
  left: -9px;
  width: 8px;
  height: 8px;
  background: var(--lb-red);
  transform: rotate(45deg);
}

.page-about .about-panel__title {
  font-family: var(--lb-font-head);
  font-size: 1.15rem;
  color: var(--lb-deep);
  margin: 0 0 14px;
}

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

.page-about .about-panel__list li {
  position: relative;
  padding-left: 20px;
  font-family: var(--lb-font-body);
  font-size: 0.94rem;
  line-height: 1.7;
  color: #2a2a2a;
}

.page-about .about-panel__list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--lb-gold);
  font-weight: 700;
}

/* 时间轴区 */
.page-about .about-timeline {
  background: var(--lb-paper);
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 70px;
  height: 4px;
  background: repeating-linear-gradient(135deg, var(--lb-gold) 0 10px, transparent 10px 18px);
}

.page-about .about-timeline__head {
  max-width: var(--lb-content);
  margin: 0 auto;
  display: grid;
  gap: 16px;
}

.page-about .about-timeline__note {
  max-width: 380px;
}

.page-about .about-timeline__media {
  max-width: var(--lb-content);
  margin: 28px auto 36px;
}

.page-about .about-timeline__media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 0 18px 0 18px;
  border: 1px solid var(--lb-deep);
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 820px;
  position: relative;
  margin-left: auto;
  margin-right: auto;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--lb-line);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 34px 28px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 4px;
  width: 14px;
  height: 14px;
  background: var(--lb-paper);
  border: 3px solid var(--lb-deep);
  border-radius: 50%;
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: 14px;
  top: 23px;
  width: 8px;
  height: 2px;
  background: var(--lb-gold);
}

.page-about .about-timeline__year {
  font-family: var(--lb-font-data);
  font-weight: 700;
  font-size: 1.28rem;
  color: var(--lb-gold);
}

.page-about .about-timeline__content {
  background: #fff;
  border: 1px solid var(--lb-line);
  border-radius: 0 12px 12px 0;
  padding: 18px 20px;
  box-shadow: 0 4px 14px rgba(10, 31, 68, 0.06);
}

.page-about .about-timeline__content h3 {
  font-family: var(--lb-font-head);
  font-weight: 700;
  font-size: 1.12rem;
  color: var(--lb-deep);
  margin: 0 0 8px;
}

.page-about .about-timeline__content p {
  font-family: var(--lb-font-body);
  font-size: 0.94rem;
  line-height: 1.75;
  color: #333;
  margin: 0;
}

/* 服务理念区 */
.page-about .about-service {
  background: #fff;
}

.page-about .about-service__grid {
  max-width: var(--lb-content);
  margin: 0 auto;
  display: grid;
  gap: 36px;
}

.page-about .about-service__visual {
  order: 2;
}

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

.page-about .about-service__figure img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 50% 50% 8px 8px;
  border: 2px solid var(--lb-deep);
}

.page-about .about-service__caption {
  margin-top: 14px;
  display: inline-block;
}

.page-about .about-service__main {
  order: 1;
}

.page-about .about-service__lead {
  font-family: var(--lb-font-body);
  font-size: 1.02rem;
  line-height: 1.85;
  color: #333;
  margin: 0 0 26px;
  max-width: 680px;
}

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

.page-about .about-service__card {
  background: var(--lb-paper);
  border: 1px solid var(--lb-line);
  border-left: 4px solid var(--lb-deep);
  border-radius: 0 10px 10px 0;
  overflow: hidden;
}

.page-about .about-service__card summary {
  font-family: var(--lb-font-head);
  font-weight: 700;
  font-size: 1.04rem;
  color: var(--lb-deep);
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  position: relative;
}

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

.page-about .about-service__card summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--lb-font-data);
  font-weight: 700;
  color: var(--lb-gold);
  font-size: 1.35rem;
  transition: transform 0.3s ease;
}

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

.page-about .about-service__card[open] {
  border-left-color: var(--lb-gold);
  box-shadow: 0 8px 20px rgba(10, 31, 68, 0.08);
}

.page-about .about-service__card-body {
  padding: 0 18px 18px 18px;
  font-family: var(--lb-font-body);
  font-size: 0.94rem;
  line-height: 1.78;
  color: #333;
}

.page-about .about-service__card-body p {
  margin: 0;
}

.page-about .about-service__footnote {
  margin-top: 22px;
  padding: 18px 20px;
  background: var(--lb-deep);
  color: #fff;
  border-radius: 0 12px 12px 0;
  font-family: var(--lb-font-body);
  font-size: 0.95rem;
  line-height: 1.75;
  border-left: 4px solid var(--lb-gold);
}

/* 资质区 */
.page-about .about-credential {
  background: var(--lb-paper);
}

.page-about .about-credential__head {
  max-width: var(--lb-content);
  margin: 0 auto 34px;
}

.page-about .about-credential__head > p:not(.about-kicker) {
  font-family: var(--lb-font-body);
  font-size: 0.98rem;
  line-height: 1.8;
  color: #333;
  max-width: 640px;
}

.page-about .about-credential__grid {
  max-width: var(--lb-content);
  margin: 0 auto;
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

.page-about .about-credential__card {
  background: var(--lb-paper);
  border: 2px solid var(--lb-deep);
  padding: 24px 22px;
  border-radius: 0 16px 16px 0;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-credential__card:hover {
  transform: translateY(-4px);
  box-shadow: 10px 10px 0 rgba(201, 162, 39, 0.4);
}

.page-about .about-credential__num {
  display: inline-block;
  font-family: var(--lb-font-data);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--lb-red);
  background: var(--about-gold-soft);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 14px;
}

.page-about .about-credential__card h3 {
  font-family: var(--lb-font-head);
  font-weight: 700;
  font-size: 1.16rem;
  color: var(--lb-deep);
  margin: 0 0 10px;
}

.page-about .about-credential__card p {
  font-family: var(--lb-font-body);
  font-size: 0.94rem;
  line-height: 1.75;
  color: #333;
  margin: 0;
}

.page-about .about-credential__footer {
  max-width: var(--lb-content);
  margin: 36px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  align-items: center;
  justify-content: space-between;
  background: #fff;
  border: 1px solid var(--lb-line);
  border-left: 4px solid var(--lb-gold);
  padding: 20px 22px;
  border-radius: 0 12px 12px 0;
}

.page-about .about-credential__footer p {
  margin: 0;
  max-width: 480px;
  border-left: none;
  padding-left: 0;
}

/* 收尾区 */
.page-about .about-closing {
  background: var(--lb-deep);
  padding: 60px 20px;
}

.page-about .about-closing__inner {
  max-width: var(--lb-content);
  margin: 0 auto;
  display: grid;
  gap: 32px;
}

.page-about .about-closing__title {
  font-family: var(--lb-font-head);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  color: #fff;
  margin: 0 0 16px;
  line-height: 1.3;
}

.page-about .about-closing__text p {
  font-family: var(--lb-font-body);
  font-size: 0.99rem;
  line-height: 1.85;
  color: var(--lb-silver);
  margin: 0 0 14px;
  max-width: 600px;
}

.page-about .about-closing__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: flex-start;
}

/* 按钮在本页内部微调 */
.page-about .lb-btn {
  font-family: var(--lb-font-head);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 12px 22px;
  border-radius: 0 8px 8px 0;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  cursor: pointer;
  border: 2px solid transparent;
}

.page-about .lb-btn--gold {
  background: var(--lb-gold);
  color: var(--lb-deep);
  border-color: var(--lb-gold);
}

.page-about .lb-btn--gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(201, 162, 39, 0.4);
}

.page-about .lb-btn--ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}

.page-about .lb-btn--ghost:hover {
  border-color: var(--lb-gold);
  color: var(--lb-gold);
  transform: translateY(-2px);
}

/* 响应式增强 */
@media (min-width: 640px) {
  .page-about .about-hero {
    padding: 64px 24px 52px;
  }

  .page-about .about-quickfacts {
    padding: 26px 24px 12px;
  }

  .page-about .about-quickfacts__row {
    gap: 30px;
  }

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

  .page-about .about-stat__num {
    font-size: 2rem;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1.35fr 0.65fr;
    gap: 48px;
    align-items: end;
  }

  .page-about .about-hero__visual {
    margin-top: 0;
  }

  .page-about .about-coverage__grid {
    grid-template-columns: 1fr 0.4fr;
    gap: 52px;
    align-items: start;
  }

  .page-about .about-timeline__head {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .page-about .about-timeline__list {
    padding-left: 60px;
  }

  .page-about .about-timeline__list::before {
    left: 36px;
  }

  .page-about .about-timeline__item::before {
    left: 31px;
  }

  .page-about .about-timeline__item::after {
    left: 50px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 92px 1fr;
    gap: 0;
    padding-left: 0;
  }

  .page-about .about-timeline__year {
    padding-top: 18px;
  }

  .page-about .about-timeline__content {
    padding: 22px 28px;
  }

  .page-about .about-service__grid {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-service__visual {
    order: 1;
  }

  .page-about .about-service__main {
    order: 2;
  }

  .page-about .about-credential__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-closing__inner {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
  }

  .page-about .about-section {
    padding: 72px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}