.page-about {
  --about-edge: clamp(16px, 5vw, 64px);
  --about-line-soft: rgba(124, 139, 153, 0.22);
  display: block;
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-about .wrap {
  box-sizing: border-box;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(18px, 3vw, 30px) 0 clamp(28px, 5vw, 52px);
  background:
    radial-gradient(1100px 520px at 88% -10%, rgba(94, 234, 212, 0.13), transparent 62%),
    radial-gradient(760px 420px at 4% 8%, rgba(255, 138, 61, 0.10), transparent 60%),
    linear-gradient(180deg, #0A1929 0%, #0C1F33 70%, #0A1929 100%);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 4vw, 40px);
  align-items: start;
  margin-top: clamp(14px, 2vw, 24px);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.2vw, 56px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-about .about-hero__desc {
  margin: 0 0 24px;
  max-width: 54ch;
  font-size: clamp(15px, 2.4vw, 17px);
  line-height: 1.8;
  color: rgba(237, 231, 219, 0.78);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--about-line-soft);
  background: var(--panel);
  box-shadow: 0 26px 60px -34px rgba(0, 0, 0, 0.85);
}

.page-about .about-hero__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 8;
  object-fit: cover;
}

.page-about .about-hero__media .media__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: 12px 16px;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(237, 231, 219, 0.8);
  background: linear-gradient(180deg, rgba(10, 25, 41, 0) 0%, rgba(10, 25, 41, 0.88) 78%);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  border: 1px solid var(--about-line-soft);
  border-radius: var(--radius);
  background: var(--about-line-soft);
  overflow: hidden;
}

.page-about .about-stat {
  padding: 16px 18px;
  background: rgba(16, 42, 67, 0.72);
}

.page-about .about-stat__key {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stone);
}

.page-about .about-stat__val {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 5vw, 34px);
  line-height: 1.1;
  color: var(--paper);
}

.page-about .about-stat__unit {
  margin-left: 6px;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 13px;
  color: var(--stone);
}

/* ---------- 目录条 ---------- */
.page-about .about-toc {
  position: sticky;
  top: 0;
  z-index: 20;
  border-top: 1px solid var(--about-line-soft);
  border-bottom: 1px solid var(--about-line-soft);
  background: rgba(10, 25, 41, 0.9);
  backdrop-filter: blur(10px);
}

.page-about .about-toc__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 10px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-toc__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-toc__link {
  display: inline-block;
  padding: 7px 13px;
  border: 1px solid var(--about-line-soft);
  border-radius: 999px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--stone);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 通用段落 ---------- */
.page-about .about-section {
  padding: clamp(44px, 8vw, 92px) 0;
}

.page-about .about-h2 {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4.4vw, 36px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-h2--onDark {
  color: var(--paper);
}

.page-about .about-p {
  margin: 0 0 16px;
  font-size: clamp(15px, 2.3vw, 16.5px);
  line-height: 1.85;
  color: rgba(237, 231, 219, 0.78);
}

.page-about .about-p--onDark {
  color: rgba(237, 231, 219, 0.8);
}

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

/* ---------- 坐标中国 ---------- */
.page-about .about-origin {
  background:
    linear-gradient(180deg, rgba(27, 58, 91, 0.28) 0%, rgba(10, 25, 41, 0) 60%);
}

.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 4vw, 34px);
}

.page-about .about-split__side {
  padding: clamp(20px, 3vw, 26px);
  border-radius: var(--radius-lg);
}

.page-about .about-card__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-kv {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(74px, auto) 1fr;
  gap: 10px 14px;
}

.page-about .about-kv__k {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--stone);
  align-self: center;
}

.page-about .about-kv__v {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.page-about .about-origin__hint {
  margin: 20px 0 14px;
  padding-top: 16px;
  border-top: 1px solid var(--about-line-soft);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--stone);
}

.page-about .about-origin .btn {
  display: inline-block;
}

/* ---------- 服务版图 ---------- */
.page-about .about-map {
  background: linear-gradient(180deg, rgba(16, 42, 67, 0.55) 0%, rgba(10, 25, 41, 0.1) 100%);
}

.page-about .about-map__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 26px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-map__figure {
  margin: 0;
  padding: clamp(12px, 2vw, 20px);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .about-map__svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
}

.page-about .about-map__pin circle {
  fill: var(--cyan);
  stroke: rgba(10, 25, 41, 0.85);
  stroke-width: 2;
  transition: r 0.18s ease, fill 0.18s ease;
}

.page-about .about-map__pin text {
  fill: rgba(237, 231, 219, 0.82);
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
}

.page-about .about-map__pin--hot circle {
  fill: var(--amber);
}

.page-about .about-map__figure:hover .about-map__pin circle {
  r: 9;
}

.page-about .about-map__pin:hover circle {
  fill: var(--amber);
}

.page-about .about-map__cap {
  margin: 12px 2px 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
}

.page-about .about-regions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-region {
  padding: 14px 16px;
  border: 1px solid var(--about-line-soft);
  border-left: 3px solid var(--glass);
  border-radius: 10px;
  background: rgba(16, 42, 67, 0.56);
  outline: none;
  transition: border-color 0.18s ease, background-color 0.18s ease, transform 0.18s ease;
}

.page-about .about-region:hover,
.page-about .about-region:focus-visible {
  border-left-color: var(--amber);
  background: rgba(27, 58, 91, 0.78);
  transform: translateX(3px);
}

.page-about .about-region:focus-visible {
  box-shadow: 0 0 0 2px var(--cyan);
}

.page-about .about-region__name {
  margin: 0 0 4px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .about-region__scope {
  margin: 0 0 6px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
}

.page-about .about-region__duty {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--stone);
}

/* ---------- 发展时间线 ---------- */
.page-about .about-timeline {
  background:
    radial-gradient(900px 460px at 0% 40%, rgba(94, 234, 212, 0.07), transparent 66%),
    linear-gradient(180deg, rgba(10, 25, 41, 0) 0%, rgba(16, 42, 67, 0.4) 100%);
}

.page-about .about-tl {
  position: relative;
  margin: clamp(22px, 4vw, 40px) 0 0;
  padding: 0 0 0 26px;
  list-style: none;
  border-left: 1px solid var(--about-line-soft);
}

.page-about .about-tl__item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding-bottom: clamp(20px, 3vw, 30px);
  outline: none;
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 8px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  transition: background-color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-about .about-tl__item--live::before {
  border-color: var(--amber);
  background: var(--amber);
  box-shadow: 0 0 0 5px rgba(255, 138, 61, 0.16);
}

.page-about .about-tl__item:hover::before,
.page-about .about-tl__item:focus-visible::before {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 5px rgba(94, 234, 212, 0.16);
}

.page-about .about-tl__item:focus-visible {
  box-shadow: none;
}

.page-about .about-tl__year {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  align-self: start;
}

.page-about .about-tl__item--live .about-tl__year {
  color: var(--amber);
}

.page-about .about-tl__body {
  padding: clamp(16px, 2.4vw, 22px);
  border-radius: var(--radius);
}

.page-about .about-tl__stage {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone);
}

.page-about .about-tl__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(17px, 3vw, 20px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .about-tl__text {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(237, 231, 219, 0.76);
}

.page-about .about-tl__gain {
  margin: 0;
  padding: 10px 12px;
  border-left: 2px solid var(--moss);
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(237, 231, 219, 0.9);
  background: rgba(111, 158, 122, 0.1);
  border-radius: 0 8px 8px 0;
}

.page-about .about-timeline__media {
  margin: clamp(24px, 4vw, 40px) 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--about-line-soft);
  background: var(--panel);
}

.page-about .about-timeline__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 560px;
  margin: 0 auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-about .about-timeline__media .media__cap {
  margin: 0;
  padding: 12px 18px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
  border-top: 1px solid var(--about-line-soft);
}

/* ---------- 团队分工 ---------- */
.page-about .about-team {
  background: linear-gradient(180deg, rgba(27, 58, 91, 0.28) 0%, rgba(10, 25, 41, 0.05) 100%);
}

.page-about .about-team__media {
  margin: clamp(20px, 3vw, 30px) 0 clamp(20px, 3vw, 28px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--about-line-soft);
  background: var(--panel);
}

.page-about .about-team__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

.page-about .about-team__media .media__cap {
  margin: 0;
  padding: 12px 18px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .about-team__cell {
  padding: clamp(18px, 2.6vw, 24px);
  border-radius: var(--radius);
}

.page-about .about-team__no {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-about .about-team__name {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-team__desc {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(237, 231, 219, 0.76);
}

.page-about .about-team__link {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--about-line-soft);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-team__note {
  margin: clamp(18px, 3vw, 24px) 0 0;
  padding: 16px 18px;
  border: 1px dashed var(--about-line-soft);
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(237, 231, 219, 0.72);
}

/* ---------- 资质与荣誉 ---------- */
.page-about .about-cred__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-cred__item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 14px;
  padding: clamp(18px, 2.6vw, 24px) 4px;
  border-bottom: 1px solid var(--about-line-soft);
  outline: none;
  transition: background-color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-cred__item:hover,
.page-about .about-cred__item:focus-visible {
  background: rgba(27, 58, 91, 0.4);
  border-bottom-color: var(--line-strong);
}

.page-about .about-cred__item:focus-visible {
  box-shadow: inset 0 0 0 2px var(--cyan);
  border-radius: 6px;
}

.page-about .about-cred__no {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--stone);
  padding-top: 3px;
}

.page-about .about-cred__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-cred__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(237, 231, 219, 0.72);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  padding-bottom: clamp(52px, 9vw, 100px);
}

.page-about .about-eco__panel {
  padding: clamp(24px, 4.4vw, 48px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(620px 340px at 88% 0%, rgba(255, 138, 61, 0.16), transparent 62%),
    linear-gradient(135deg, #102A43 0%, #0A1929 100%);
}

.page-about .about-eco__lead {
  max-width: 62ch;
}

.page-about .about-eco__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin: clamp(22px, 3.4vw, 34px) 0;
}

.page-about .about-eco__stat {
  padding: 16px 18px;
  border: 1px solid var(--about-line-soft);
  border-radius: var(--radius);
  background: rgba(10, 25, 41, 0.55);
}

.page-about .about-eco__num {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 5vw, 36px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-eco__num span {
  font-size: 0.6em;
  color: var(--amber);
}

.page-about .about-eco__label {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--stone);
}

.page-about .about-eco__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-hero__media {
    margin-top: 22px;
  }

  .page-about .about-split {
    grid-template-columns: 7fr 5fr;
    gap: clamp(28px, 4vw, 48px);
  }

  .page-about .about-split__side {
    align-self: start;
    position: sticky;
    top: 84px;
  }

  .page-about .about-map__grid {
    grid-template-columns: 6fr 6fr;
    align-items: start;
  }

  .page-about .about-tl {
    padding-left: 0;
    border-left: none;
  }

  .page-about .about-tl__item {
    grid-template-columns: 1fr 92px 1fr;
    gap: 0 clamp(16px, 2.4vw, 28px);
    align-items: start;
    padding-bottom: clamp(24px, 3.4vw, 40px);
  }

  .page-about .about-tl__item::before {
    left: 50%;
    top: 10px;
    margin-left: -5.5px;
  }

  .page-about .about-tl__year {
    grid-column: 2;
    grid-row: 1;
    text-align: center;
    padding-top: 4px;
  }

  .page-about .about-tl__body {
    grid-column: 3;
    grid-row: 1;
  }

  .page-about .about-tl__item:nth-child(odd) .about-tl__body {
    grid-column: 1;
    text-align: right;
  }

  .page-about .about-tl__item:nth-child(odd) .about-tl__gain {
    border-left: none;
    border-right: 2px solid var(--moss);
    border-radius: 8px 0 0 8px;
  }

  .page-about .about-tl__item::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 20px;
    width: 1px;
    height: 100%;
    background: var(--about-line-soft);
    transform: translateX(-0.5px);
    z-index: -1;
  }

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

  .page-about .about-timeline__media .media__img {
    max-width: 640px;
  }

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

  .page-about .about-eco__panel {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: clamp(24px, 3.4vw, 44px);
    align-items: start;
  }

  .page-about .about-eco__lead {
    grid-column: 1;
  }

  .page-about .about-eco__stats {
    grid-column: 2;
    grid-template-columns: 1fr;
    margin: 0;
  }

  .page-about .about-eco__actions {
    grid-column: 1 / -1;
    padding-top: clamp(6px, 1.4vw, 14px);
    border-top: 1px solid var(--about-line-soft);
  }
}

@media (min-width: 1180px) {
  .page-about .about-toc__list {
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-toc__link,
  .page-about .about-region,
  .page-about .about-tl__item::before,
  .page-about .about-cred__item,
  .page-about .about-map__pin circle {
    transition: none;
  }
}