.page-about {
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding-top: clamp(18px, 3.5vw, 30px);
}
.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--fg-faint);
}
.page-about .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--c-steel);
}
.page-about .breadcrumbs a {
  color: var(--c-cyan);
  text-decoration: none;
}
.page-about .breadcrumbs a:hover {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 5vw, 52px) 0 clamp(34px, 6vw, 68px);
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -20% -20% auto -20%;
  height: 140%;
  background:
    radial-gradient(52% 58% at 84% 4%, rgba(255, 107, 44, .20), transparent 62%),
    radial-gradient(48% 52% at 2% 94%, rgba(45, 226, 230, .13), transparent 66%);
  pointer-events: none;
}
.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(26px, 4.5vw, 52px);
  align-items: center;
}
@media (min-width: 920px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
}
.page-about .eyebrow {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-cyan);
}
.page-about .about-hero h1 {
  margin: .3em 0 .55em;
  font-family: var(--f-head);
  font-weight: 700;
  font-size: clamp(36px, 7vw, 68px);
  line-height: 1.04;
  letter-spacing: .005em;
  color: var(--c-mist);
}
.page-about .about-hero .lede {
  margin: 0 0 clamp(20px, 3.5vw, 30px);
  max-width: 46ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--fg-soft);
}
.page-about .about-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}
.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-orange), var(--c-cyan));
  opacity: .9;
}
.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

/* ---------- 概况数字带 ---------- */
.page-about .about-stats {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 42, 74, .82), rgba(11, 27, 51, .38));
}
.page-about .about-stats__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}
@media (min-width: 760px) {
  .page-about .about-stats__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
.page-about .about-stats__cell {
  background: var(--c-navy);
  padding: clamp(16px, 2.8vw, 26px) clamp(14px, 2.4vw, 22px);
}
.page-about .about-stats__cell .stat__value {
  display: block;
  font-family: var(--f-mono);
  font-size: clamp(24px, 3.4vw, 32px);
  letter-spacing: -.01em;
  color: var(--c-amber);
}
.page-about .about-stats__cell .stat__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--fg-faint);
}

/* ---------- 章节标题 ---------- */
.page-about .about-head {
  max-width: 64ch;
  margin-bottom: clamp(22px, 3.6vw, 38px);
}
.page-about .about-head h2 {
  margin: .26em 0 .42em;
  font-family: var(--f-head);
  font-weight: 700;
  font-size: clamp(27px, 4.2vw, 42px);
  line-height: 1.08;
  color: var(--c-mist);
}
.page-about .about-head p:not(.eyebrow) {
  margin: 0;
  line-height: 1.78;
  color: var(--fg-soft);
}

/* ---------- 起点 ---------- */
.page-about .about-origin {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}
@media (min-width: 880px) {
  .page-about .about-origin {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }
}
.page-about .about-origin__lede p {
  margin: 0 0 1em;
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--fg-soft);
}
.page-about .about-origin__lede p:last-child {
  margin-bottom: 0;
}
.page-about .about-origin__list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-origin__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--c-cyan);
  border-radius: var(--r);
  background: rgba(18, 42, 74, .45);
}
.page-about .about-origin__no {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-cyan);
}
.page-about .about-origin__txt {
  font-size: 15px;
  line-height: 1.75;
  color: var(--fg-soft);
}
.page-about .about-origin__txt strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--f-head);
  font-size: 18px;
  letter-spacing: .02em;
  color: var(--c-mist);
}

/* ---------- 发展年轮 ---------- */
.page-about .about-chrono {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}
@media (min-width: 980px) {
  .page-about .about-chrono {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
}
.page-about .about-tl {
  display: block;
  border-top: 1px solid var(--line-strong);
}
.page-about .about-tl .accordion__item {
  border-bottom: 1px solid var(--line);
}
.page-about .about-tl .accordion__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: baseline;
  width: 100%;
  margin: 0;
  padding: 16px 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--c-mist);
  font: inherit;
}
.page-about .about-tl .accordion__trigger:hover .about-tl__title {
  color: var(--c-glow);
}
.page-about .about-tl .accordion__trigger:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}
.page-about .about-tl__no {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-steel);
}
.page-about .about-tl .accordion__item[data-open] .about-tl__no {
  color: var(--c-orange);
}
.page-about .about-tl__title {
  font-family: var(--f-head);
  font-size: clamp(18px, 2.4vw, 23px);
  line-height: 1.25;
  transition: color var(--dur) var(--ease);
}
.page-about .about-tl__meta {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--fg-faint);
  white-space: nowrap;
}
@media (max-width: 600px) {
  .page-about .about-tl .accordion__trigger {
    grid-template-columns: auto minmax(0, 1fr);
  }
  .page-about .about-tl__meta {
    grid-column: 2;
  }
}
.page-about .about-tl .accordion__panel {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.page-about .about-tl .accordion__item[data-open] .accordion__panel {
  max-height: 360px;
  opacity: 1;
}
.page-about .about-tl .accordion__body {
  padding: 0 0 18px 32px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--fg-soft);
}
.page-about .about-chrono__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}
.page-about .about-chrono__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-chrono__media .media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 7px 12px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--c-mist);
  background: rgba(5, 10, 20, .78);
  border-top-right-radius: var(--r);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(22px, 3.6vw, 40px);
}
@media (min-width: 900px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    align-items: start;
  }
}
.page-about .about-team__media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}
.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-role {
  position: relative;
  padding: clamp(18px, 2.8vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(155deg, rgba(18, 42, 74, .85), rgba(11, 27, 51, .62));
  box-shadow: var(--shadow-1);
  overflow: hidden;
}
.page-about .about-role + .about-role {
  margin-top: 16px;
}
.page-about .about-role::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-orange), var(--c-cyan));
  opacity: .85;
}
@media (min-width: 900px) {
  .page-about .about-role:nth-child(2) {
    margin-left: 22px;
  }
  .page-about .about-role:nth-child(3) {
    margin-left: 44px;
  }
}
.page-about .about-role__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.page-about .about-role__name {
  margin: 0;
  font-family: var(--f-head);
  font-size: clamp(19px, 2.4vw, 23px);
  color: var(--c-mist);
}
.page-about .about-role__num {
  font-family: var(--f-mono);
  font-size: 22px;
  color: var(--c-amber);
}
.page-about .about-role p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--fg-soft);
}

/* ---------- 跟队 ---------- */
.page-about .about-focus {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}
@media (min-width: 880px) {
  .page-about .about-focus {
    grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
    align-items: start;
  }
}
.page-about .about-focus__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-focus__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--fg-soft);
}
.page-about .about-focus__list li:first-child {
  border-top: 1px solid var(--line);
}
.page-about .about-focus__list li::before {
  content: "";
  width: 6px;
  height: 6px;
  margin-top: 10px;
  border-radius: 50%;
  background: var(--c-cyan);
}
.page-about .about-panel {
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line-strong);
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(18, 42, 74, .92), rgba(11, 27, 51, .7));
  box-shadow: var(--shadow-1);
}
.page-about .about-panel__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.page-about .about-panel__hint {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .07em;
  color: var(--fg-faint);
}
.page-about .about-panel__step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}
.page-about .about-panel__step:first-child {
  border-top: 0;
  padding-top: 0;
}
.page-about .about-panel__step span {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-orange);
}
.page-about .about-panel__step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fg-soft);
}
.page-about .about-panel .btn-row {
  margin-top: 18px;
}

/* ---------- 合作与荣誉 ---------- */
.page-about .about-honor {
  position: relative;
  margin-bottom: clamp(20px, 3.4vw, 32px);
  padding: clamp(20px, 3.2vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--r);
  background:
    linear-gradient(120deg, rgba(255, 107, 44, .14), rgba(45, 226, 230, .10) 62%, transparent),
    rgba(12, 28, 50, .72);
}
.page-about .about-honor__kicker {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-amber);
}
.page-about .about-honor__text {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(16px, 1.8vw, 18.5px);
  line-height: 1.8;
  color: var(--c-mist);
}
.page-about .about-eco {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}
@media (min-width: 720px) {
  .page-about .about-eco {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1040px) {
  .page-about .about-eco {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
.page-about .about-eco__cell {
  background: var(--c-navy);
  padding: clamp(18px, 2.8vw, 26px) clamp(16px, 2.4vw, 22px);
}
.page-about .about-eco__num {
  display: block;
  font-family: var(--f-mono);
  font-size: clamp(24px, 3.2vw, 30px);
  letter-spacing: -.01em;
  color: var(--c-cyan);
}
.page-about .about-eco__label {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--fg-soft);
}

/* ---------- 服务承诺 ---------- */
.page-about .about-pledge {
  display: grid;
  gap: clamp(22px, 3.6vw, 40px);
}
@media (min-width: 880px) {
  .page-about .about-pledge {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }
}
.page-about .about-pledge__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-pledge__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}
.page-about .about-pledge__list li:last-child {
  border-bottom: 1px solid var(--line);
}
.page-about .about-pledge__no {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-orange);
  padding-top: 4px;
}
.page-about .about-pledge__list h3 {
  margin: 0 0 6px;
  font-family: var(--f-head);
  font-size: 20px;
  letter-spacing: .02em;
  color: var(--c-mist);
}
.page-about .about-pledge__list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--fg-soft);
  word-break: break-word;
}
.page-about .about-privacy {
  padding: clamp(20px, 3.2vw, 28px);
  border: 1px solid var(--line);
  border-left: 2px solid var(--c-amber);
  border-radius: var(--r);
  background: linear-gradient(170deg, rgba(18, 42, 74, .8), rgba(11, 27, 51, .55));
}
.page-about .about-privacy__kicker {
  margin: 0 0 10px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-amber);
}
.page-about .about-privacy p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--fg-soft);
}
.page-about .about-privacy__foot {
  margin: 18px 0 0 !important;
  font-size: 14px;
  color: var(--fg-faint);
}

/* ---------- 显现动画 ---------- */
.page-about [data-reveal] {
  opacity: 1;
}
.page-about [data-reveal][data-revealed] {
  animation: about-fade var(--dur) var(--ease) both;
}
@keyframes about-fade {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal][data-revealed] {
    animation: none;
  }
  .page-about .about-tl .accordion__panel,
  .page-about .about-tl__title {
    transition: none;
  }
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 480px) {
  .page-about .about-role__head {
    flex-wrap: wrap;
  }
  .page-about .about-eco__cell,
  .page-about .about-stats__cell {
    padding-left: 14px;
    padding-right: 14px;
  }
}