.page-about {
  --about-gap: clamp(20px, 3vw, 40px);
  background: var(--sk-navy);
  color: var(--sk-text);
  font-family: var(--sk-font);
  line-height: 1.85;
  overflow-x: clip;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0;
  font-family: var(--sk-font);
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--sk-sand);
}

.page-about .about-block h2 {
  margin-top: 10px;
  font-size: clamp(25px, 3.6vw, 44px);
  line-height: 1.16;
}

.page-about .about-block h3 {
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.42;
}

.page-about .about-block {
  position: relative;
  isolation: isolate;
  padding: clamp(52px, 7vw, 100px) 0;
}

.page-about .about-block > * {
  position: relative;
  z-index: 1;
}

.page-about .about-block--ink {
  background: var(--sk-navy);
  color: var(--sk-text);
}

.page-about .about-block--ink::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(174, 185, 201, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(174, 185, 201, .055) 1px, transparent 1px);
  background-size: 24px 24px;
}

.page-about .about-block--sand {
  background: var(--sk-sand);
  color: var(--sk-panel);
}

.page-about .about-block--sand h1,
.page-about .about-block--sand h2,
.page-about .about-block--sand h3 {
  color: var(--sk-navy);
}

.page-about .about-block--sand .sk-eyebrow {
  color: var(--sk-indigo);
}

.page-about .about-block--sand .sk-link {
  color: var(--sk-navy);
  border-bottom-color: var(--sk-indigo);
}

.page-about .about-block p {
  margin: 14px 0 0;
  max-width: 46ch;
}

/* 面包屑 */
.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-bottom: clamp(24px, 4vw, 44px);
  font-size: 13px;
  color: var(--sk-legacy);
}

/* 首屏 */
.page-about .about-hero {
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(64px, 9vw, 118px);
}

.page-about .about-hero-title {
  margin-top: 18px;
  font-size: clamp(34px, 7vw, 86px);
  line-height: 1.05;
  color: var(--sk-sand);
}

.page-about .about-hero-lede {
  margin-top: clamp(20px, 3vw, 32px);
  max-width: 46ch;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.85;
  color: var(--sk-text);
}

.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  margin: clamp(30px, 4vw, 48px) 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid var(--sk-line);
}

.page-about .about-hero-meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 14px;
  color: var(--sk-legacy);
}

.page-about .about-hero-meta .sk-mono {
  font-size: 15px;
  color: var(--sk-orange);
}

/* 索引库 */
.page-about .about-split {
  display: grid;
  gap: clamp(30px, 5vw, 64px);
}

.page-about .about-copy p {
  color: var(--sk-panel);
}

.page-about .about-stats {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--sk-sand-2);
}

.page-about .about-stat {
  padding: 20px 0 18px;
  border-bottom: 1px solid var(--sk-sand-2);
}

.page-about .about-stat-value {
  display: block;
  font-family: var(--sk-mono);
  font-size: clamp(36px, 5.2vw, 58px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--sk-navy);
}

.page-about .about-stat-label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sk-indigo);
  letter-spacing: .02em;
}

/* 三个小组 */
.page-about .about-teams-grid {
  display: grid;
  gap: clamp(32px, 5vw, 60px);
}

.page-about .about-panels {
  display: grid;
  gap: 14px;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-about .about-panel {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--sk-panel);
  border: 1px solid var(--sk-line);
  border-left: 4px solid var(--sk-green);
  transition:
    transform var(--sk-dur) var(--sk-ease),
    border-top-color var(--sk-dur) var(--sk-ease),
    border-right-color var(--sk-dur) var(--sk-ease),
    border-bottom-color var(--sk-dur) var(--sk-ease);
}

.page-about .about-panel:nth-child(2) {
  border-left-color: var(--sk-orange);
}

.page-about .about-panel:nth-child(3) {
  border-left-color: var(--sk-indigo);
}

.page-about .about-panel:hover {
  transform: translateX(2px);
  border-top-color: var(--sk-orange);
  border-right-color: var(--sk-orange);
  border-bottom-color: var(--sk-orange);
}

.page-about .about-panel-tag {
  margin: 0;
  font-family: var(--sk-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--sk-legacy);
}

.page-about .about-panel h3 {
  margin-top: 8px;
}

.page-about .about-panel p {
  font-size: 15px;
  color: var(--sk-text);
}

.page-about .about-panel-foot {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--sk-line);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--sk-green);
}

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

.page-about .about-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), calc(100% - 40px) 100%, 0 100%);
}

.page-about .about-media figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sk-legacy);
  letter-spacing: .02em;
}

/* 时间轴 */
.page-about .about-history {
  padding-top: 0;
}

.page-about .about-timeline-strip {
  height: clamp(110px, 18vw, 190px);
  overflow: hidden;
  border-bottom: 1px solid var(--sk-line);
}

.page-about .about-timeline-strip img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .6;
}

.page-about .about-history .sk-container {
  padding-top: clamp(44px, 6vw, 76px);
}

.page-about .about-timeline {
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0 0 0 clamp(24px, 4vw, 44px);
  list-style: none;
  border-left: 1px solid var(--sk-line-strong);
  display: grid;
  gap: clamp(22px, 3.2vw, 36px);
}

.page-about .about-tl {
  position: relative;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  top: 9px;
  left: calc(-1 * clamp(24px, 4vw, 44px) - 5px);
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--sk-navy);
  border: 2px solid var(--sk-legacy);
  transition:
    border-color var(--sk-dur) var(--sk-ease),
    background-color var(--sk-dur) var(--sk-ease);
}

.page-about .about-tl:hover::before {
  border-color: var(--sk-orange);
  background: var(--sk-orange);
}

.page-about .about-tl-year {
  margin: 0;
  font-family: var(--sk-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--sk-orange);
}

.page-about .about-tl-title {
  margin-top: 4px;
}

.page-about .about-tl-text {
  font-size: 15px;
  line-height: 1.85;
  color: var(--sk-text);
}

.page-about .about-history-note {
  margin-top: clamp(26px, 3.4vw, 38px);
  font-size: 14px;
  color: var(--sk-legacy);
}

/* 复核流程 */
.page-about .about-gate-head p {
  max-width: 52ch;
  color: var(--sk-panel);
}

.page-about .about-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--sk-sand-2);
  border: 1px solid var(--sk-sand-2);
}

.page-about .about-step {
  padding: clamp(20px, 2.4vw, 26px);
  background: var(--sk-sand);
  transition: background-color var(--sk-dur) var(--sk-ease);
}

.page-about .about-step:hover {
  background: #FBF8F1;
}

.page-about .about-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 14px;
  background: var(--sk-navy);
  color: var(--sk-sand);
  font-family: var(--sk-mono);
  font-size: 13px;
  letter-spacing: .04em;
  transition:
    background-color var(--sk-dur) var(--sk-ease),
    color var(--sk-dur) var(--sk-ease);
}

.page-about .about-step:hover .about-step-num {
  background: var(--sk-orange);
  color: var(--sk-navy);
}

.page-about .about-step p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--sk-panel);
}

.page-about .about-gate-note {
  margin-top: 22px;
  padding-left: 16px;
  max-width: 62ch;
  border-left: 3px solid var(--sk-green);
  font-size: 14px;
  color: var(--sk-panel);
}

/* 企业客户 */
.page-about .about-clients-grid {
  display: grid;
  gap: clamp(32px, 5vw, 60px);
}

.page-about .about-client-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(24px, 3vw, 32px) 0 0;
  padding: 1px;
  list-style: none;
  background: var(--sk-line);
}

.page-about .about-client-stats li {
  padding: 18px clamp(14px, 2vw, 20px);
  background: var(--sk-panel);
}

.page-about .about-client-stat-value {
  display: block;
  font-family: var(--sk-mono);
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--sk-sand);
}

.page-about .about-client-stat-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--sk-legacy);
}

.page-about .about-client-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 32px);
}

.page-about .about-client-list {
  margin: 0;
  display: grid;
}

.page-about .about-client-item {
  padding: 20px 0;
  border-top: 1px solid var(--sk-line);
}

.page-about .about-client-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-client-item dt {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--sk-sand);
}

.page-about .about-client-item dt::before {
  content: "";
  display: block;
  width: 4px;
  height: 18px;
  background: var(--sk-green);
}

.page-about .about-client-item dd {
  margin: 8px 0 0;
  max-width: 46ch;
  font-size: 15px;
  color: var(--sk-text);
}

/* 运营与合规 */
.page-about .about-legal-banner {
  margin: 0 0 clamp(28px, 4vw, 48px);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), calc(100% - 44px) 100%, 0 100%);
}

.page-about .about-legal-banner img {
  display: block;
  width: 100%;
  height: clamp(150px, 24vw, 300px);
  object-fit: cover;
}

.page-about .about-legal-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-legal-grid p {
  color: var(--sk-panel);
}

.page-about .about-legal-list {
  margin: 0;
  display: grid;
}

.page-about .about-legal-list > div {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-top: 1px solid var(--sk-sand-2);
}

.page-about .about-legal-list dt {
  font-family: var(--sk-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--sk-indigo);
}

.page-about .about-legal-list dd {
  margin: 0;
  font-size: 15px;
  color: var(--sk-panel);
}

@media (min-width: 620px) {
  .page-about .about-legal-list > div {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 720px) {
  .page-about .about-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-panel:nth-child(2) {
    margin-left: 6%;
  }

  .page-about .about-panel:nth-child(3) {
    margin-left: 12%;
  }
}

@media (min-width: 860px) {
  .page-about .about-legal-grid {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-about .about-clients-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-about .about-teams-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .page-about .about-hero-title br {
    display: none;
  }

  .page-about .about-hero-meta {
    gap: 10px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-panel,
  .page-about .about-step,
  .page-about .about-step-num,
  .page-about .about-tl::before {
    transition: none;
  }

  .page-about .about-panel:hover {
    transform: none;
  }
}