.page-about {
  --about-line: rgba(16, 21, 28, .16);
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

.page-about .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(20px, 5vw, 40px) var(--gutter) clamp(52px, 8vw, 96px);
  background:
    radial-gradient(120% 90% at 88% 8%, rgba(108, 61, 240, .45) 0%, rgba(108, 61, 240, 0) 58%),
    linear-gradient(158deg, var(--sky) 0%, #14589f 58%, var(--deep) 100%);
  color: var(--white);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: clamp(32px, 6vw, 64px);
  background: var(--paper);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

.page-about .breadcrumb {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(20px, 4vw, 38px);
}

.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  letter-spacing: .04em;
}

.page-about .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(255, 255, 255, .5);
}

.page-about .breadcrumb__list a {
  color: rgba(255, 255, 255, .82);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, .35);
}

.page-about .breadcrumb__list a:hover {
  color: var(--sun);
  border-bottom-color: var(--sun);
}

.page-about .breadcrumb__current {
  color: var(--sun);
}

.page-about .hero-split {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 5vw, 48px);
  align-items: center;
}

.page-about .hero-kicker {
  display: inline-block;
  margin: 0 0 16px;
  padding: 3px 12px 3px 10px;
  background: var(--sun);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  transform: rotate(-1.4deg);
  box-shadow: 3px 3px 0 rgba(16, 21, 28, .35);
}

.page-about .display {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-size: clamp(32px, 8.2vw, 62px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
}

.page-about .lead {
  max-width: 34em;
  margin: 0 0 22px;
  font-size: clamp(15px, 3.8vw, 17px);
  line-height: 1.78;
  color: rgba(255, 255, 255, .92);
}

.page-about .hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .tag {
  padding: 5px 11px;
  border: 2px solid currentColor;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  background: rgba(255, 255, 255, .08);
}

.page-about .tag--sun { color: var(--sun); }
.page-about .tag--grass { color: #7BE0B4; }
.page-about .tag--neon { color: #C6AEFF; }
.page-about .tag--outline { color: var(--white); }

.page-about .about-hero__media {
  margin: 0;
  border: 3px solid var(--sun);
  border-radius: var(--radius);
  box-shadow: 8px 8px 0 rgba(12, 74, 68, .55);
  background: var(--deep);
  overflow: hidden;
}

.page-about .media__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about .about-hero__media .media__img {
  aspect-ratio: 14 / 9;
}

.page-about .media__caption {
  margin: 0;
  padding: 10px 14px 12px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255, 255, 255, .74);
  background: rgba(12, 74, 68, .72);
}

/* ---------- 纵向叙事 ---------- */
.page-about .story {
  padding: clamp(34px, 7vw, 84px) var(--gutter) clamp(20px, 4vw, 40px);
}

.page-about .story-grid {
  display: grid;
  gap: 22px;
  max-width: 1180px;
  margin: 0 auto;
}

.page-about .about-rail {
  display: none;
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(30px, 5.5vw, 58px);
}

.page-about .tl__item {
  position: relative;
  display: grid;
  gap: 14px;
}

.page-about .tl__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background: var(--sun);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: .02em;
  box-shadow: var(--shadow-card);
  transform: rotate(-3deg);
}

.page-about .tl__body > .kicker {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--sky);
}

.page-about .tl__body .h2 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: clamp(23px, 5.4vw, 34px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -.01em;
}

.page-about .tl__body p {
  max-width: 42em;
  margin: 0 0 14px;
  font-size: clamp(15px, 3.9vw, 17px);
  line-height: 1.78;
}

.page-about .tl__body p:last-child {
  margin-bottom: 0;
}

.page-about .tl__body a {
  color: var(--sky);
  text-decoration: none;
  border-bottom: 1px solid rgba(27, 111, 214, .4);
}

.page-about .tl__body a:hover {
  border-bottom-color: var(--sky);
}

/* 服务对象列表 */
.page-about .people-list {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .people-list li {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--white);
  border: 2px solid var(--mist);
  border-left: 6px solid var(--grass);
  border-radius: var(--radius);
}

.page-about .people-list__name {
  font-weight: 800;
  font-size: 15px;
  color: var(--deep);
}

.page-about .people-list__desc {
  font-size: 14.5px;
  line-height: 1.7;
  color: #3d4650;
}

/* 纸张叠层引言卡 */
.page-about .quote-card {
  position: relative;
  margin-top: 20px;
  padding: 20px 20px 18px;
  background: var(--white);
  border: 2px solid var(--mist);
  border-left: 6px solid var(--sun);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transform: rotate(-.7deg);
  transition: transform var(--dur) ease, box-shadow var(--dur) ease;
}

.page-about .quote-card::after {
  content: "";
  position: absolute;
  top: 8px;
  right: 10px;
  width: 26px;
  height: 26px;
  background: var(--soft);
  border: 2px solid var(--mist);
  transform: rotate(6deg);
}

.page-about .quote-card:hover,
.page-about .quote-card:focus-within {
  transform: rotate(0deg) translateY(-3px);
  box-shadow: 8px 10px 0 rgba(16, 21, 28, .16);
}

.page-about .quote-card__text {
  margin: 0 0 12px;
  font-size: clamp(16px, 4.2vw, 19px);
  font-weight: 700;
  line-height: 1.62;
  color: var(--ink);
  padding-right: 34px;
}

.page-about .quote-card__note {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--mist);
  font-size: 14px;
  line-height: 1.68;
  color: var(--sticky);
  font-weight: 700;
}

/* 栏目顺序 */
.page-about .order-list {
  list-style: none;
  margin: 8px 0 22px;
  padding: 0;
  display: grid;
  gap: 8px;
  counter-reset: order;
}

.page-about .order-list__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 12px;
  align-items: center;
  padding: 12px 14px;
  background: var(--white);
  border: 2px solid var(--mist);
  border-radius: var(--radius);
  transition: border-color var(--dur) ease, transform var(--dur) ease;
}

.page-about .order-list__item:hover {
  border-color: var(--sky);
  transform: translateX(3px);
}

.page-about .order-list__no {
  grid-row: 1 / span 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--grass);
  color: var(--white);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
}

.page-about .order-list__name {
  font-weight: 800;
  font-size: 15.5px;
  letter-spacing: .02em;
}

.page-about .order-list__desc {
  font-size: 14px;
  line-height: 1.65;
  color: #4a5560;
}

.page-about .order-list__item--hot {
  border-color: var(--neon);
  background: linear-gradient(90deg, rgba(108, 61, 240, .08), rgba(255, 255, 255, 1) 62%);
}

.page-about .order-list__item--hot .order-list__no {
  background: var(--neon);
}

.page-about .order-figure {
  margin: 0 0 4px;
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: var(--deep);
}

.page-about .order-figure .media__img {
  aspect-ratio: 3 / 2;
}

.page-about .order-figure .media__caption {
  background: var(--ink);
}

/* 数据条 */
.page-about .metric-grid {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.page-about .metric {
  display: grid;
  grid-template-columns: auto auto;
  align-items: baseline;
  justify-content: start;
  gap: 2px 6px;
  padding: 14px 16px;
  background: var(--soft);
  border: 2px solid rgba(27, 111, 214, .28);
  border-radius: var(--radius);
}

.page-about .metric__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 7vw, 36px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--sky);
}

.page-about .metric__unit {
  font-size: 14px;
  font-weight: 700;
  color: var(--deep);
}

.page-about .metric__label {
  grid-column: 1 / -1;
  margin-top: 4px;
  font-size: 13.5px;
  line-height: 1.6;
  color: #3d4650;
}

/* ---------- 收束区 ---------- */
.page-about .about-close {
  padding: clamp(40px, 8vw, 88px) var(--gutter);
  background: linear-gradient(200deg, var(--deep) 0%, #0a3a36 100%);
  color: var(--white);
}

.page-about .about-close .wrap {
  max-width: 1180px;
  margin: 0 auto;
}

.page-about .close-kicker {
  display: inline-block;
  margin: 0 0 14px;
  padding: 3px 12px;
  background: var(--sticky);
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  transform: rotate(-1deg);
}

.page-about .about-close .h2 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: clamp(24px, 6vw, 36px);
  font-weight: 800;
  line-height: 1.22;
  color: var(--white);
}

.page-about .close-lead {
  max-width: 40em;
  margin: 0 0 28px;
  font-size: clamp(15px, 3.9vw, 17px);
  line-height: 1.78;
  color: rgba(255, 255, 255, .88);
}

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

.page-about .next-card {
  display: grid;
  gap: 6px;
  padding: 18px 18px 20px;
  background: rgba(255, 255, 255, .07);
  border: 2px solid rgba(255, 255, 255, .24);
  border-radius: var(--radius);
  color: var(--white);
  text-decoration: none;
  transition: transform var(--dur) ease, border-color var(--dur) ease, background var(--dur) ease;
}

.page-about .next-card:hover,
.page-about .next-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--sun);
  background: rgba(255, 255, 255, .13);
}

.page-about .next-card__label {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--sun);
}

.page-about .next-card__title {
  font-size: clamp(17px, 4.4vw, 20px);
  font-weight: 800;
  line-height: 1.36;
}

.page-about .next-card__meta {
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(255, 255, 255, .72);
}

/* ---------- 结尾条 ---------- */
.page-about .about-strip {
  padding: clamp(32px, 6vw, 64px) var(--gutter) clamp(36px, 7vw, 72px);
  background: var(--paper);
  text-align: center;
}

.page-about .about-strip__media {
  max-width: 1080px;
  margin: 0 auto clamp(20px, 4vw, 34px);
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: var(--deep);
  text-align: left;
}

.page-about .about-strip__media .media__img {
  aspect-ratio: 2 / 1;
}

.page-about .about-strip__media .media__caption {
  background: var(--ink);
}

.page-about .about-strip__line {
  max-width: 34em;
  margin: 0 auto 22px;
  font-size: clamp(15px, 4vw, 18px);
  line-height: 1.76;
  font-weight: 700;
  color: var(--deep);
}

.page-about .to-top {
  display: inline-block;
  padding: 10px 22px;
  background: var(--sun);
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  font-size: 14.5px;
  font-weight: 800;
  letter-spacing: .06em;
  text-decoration: none;
  box-shadow: 4px 4px 0 rgba(16, 21, 28, .2);
  transition: transform var(--dur) ease, box-shadow var(--dur) ease;
}

.page-about .to-top:hover,
.page-about .to-top:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 rgba(16, 21, 28, .24);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-about .hero-split {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .next-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .story-grid {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 46px;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: 132px;
    align-self: start;
  }

  .page-about .about-rail__text {
    writing-mode: vertical-rl;
    margin: 0;
    padding: 14px 0 14px 12px;
    border-left: 3px solid var(--sun);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .34em;
    color: var(--sky);
    height: 260px;
  }

  .page-about .tl__item {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }

  .page-about .tl__item::before {
    content: "";
    position: absolute;
    left: 26px;
    top: 58px;
    bottom: -46px;
    width: 2px;
    background: repeating-linear-gradient(to bottom, var(--mist) 0 8px, transparent 8px 16px);
  }

  .page-about .tl__item:last-child::before {
    display: none;
  }

  .page-about .tl__body .h2 {
    margin-top: -6px;
  }

  .page-about .metric-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-hero {
    padding-bottom: clamp(72px, 10vw, 120px);
  }
}

@media (min-width: 1180px) {
  .page-about .hero-split {
    grid-template-columns: 7.5fr 4.5fr;
    gap: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .quote-card,
  .page-about .order-list__item,
  .page-about .next-card,
  .page-about .to-top,
  .page-about .about-hero__media {
    transition: none;
  }

  .page-about .quote-card,
  .page-about .hero-kicker,
  .page-about .tl__num,
  .page-about .close-kicker {
    transform: none;
  }

  .page-about .quote-card:hover,
  .page-about .quote-card:focus-within,
  .page-about .order-list__item:hover,
  .page-about .next-card:hover,
  .page-about .next-card:focus-visible,
  .page-about .to-top:hover,
  .page-about .to-top:focus-visible {
    transform: none;
  }
}