/* ================= page-about · 团队与历程 ================= */
.page-about {
  --about-grid-line: rgba(169, 180, 176, .13);
  --about-pad: clamp(20px, 4vw, 32px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4vw, 44px) 0 clamp(56px, 8vw, 96px);
  background:
    radial-gradient(110% 82% at 86% 4%, rgba(198, 255, 61, .13), transparent 62%),
    radial-gradient(90% 70% at 4% 102%, rgba(255, 106, 43, .08), transparent 68%),
    linear-gradient(180deg, var(--ink) 0%, #04100b 100%);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--about-grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(130% 112% at 82% 6%, #000 16%, transparent 70%);
  mask-image: radial-gradient(130% 112% at 82% 6%, #000 16%, transparent 70%);
  pointer-events: none;
}

.page-about .about-hero > .container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 52px);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-head);
  font-size: clamp(34px, 7.6vw, 64px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.022em;
  color: var(--white);
}

.page-about .about-hero__title::after {
  content: "";
  display: block;
  width: clamp(56px, 12vw, 108px);
  height: 3px;
  margin-top: clamp(18px, 2.4vw, 26px);
  background: linear-gradient(90deg, var(--lime), rgba(198, 255, 61, 0));
}

.page-about .about-hero .lede {
  margin-top: clamp(18px, 2.4vw, 26px);
  max-width: 56ch;
  color: var(--silver);
  font-size: 16px;
  line-height: 1.78;
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

/* 运营概览面板 */
.page-about .hero-plate {
  position: relative;
  align-self: end;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(18, 33, 28, .92), rgba(11, 13, 12, .92));
  padding: 20px 20px 16px;
  box-shadow: 0 0 0 1px rgba(198, 255, 61, .06), 0 18px 60px -34px rgba(198, 255, 61, .35);
}

.page-about .hero-plate::before,
.page-about .hero-plate::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
}

.page-about .hero-plate::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--lime);
  border-left: 2px solid var(--lime);
}

.page-about .hero-plate::after {
  right: -1px;
  bottom: -1px;
  border-right: 2px solid var(--orange);
  border-bottom: 2px solid var(--orange);
}

.page-about .hero-plate__cap {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--mist);
  margin: 0 0 6px;
}

.page-about .hero-plate__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .hero-plate__list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .hero-plate__list li:last-child {
  border-bottom: 0;
}

.page-about .hero-plate__k {
  font-size: 13px;
  color: var(--silver);
}

.page-about .hero-plate__v {
  font-size: 20px;
  font-weight: 600;
  color: var(--lime);
  text-shadow: 0 0 12px rgba(198, 255, 61, .35);
  white-space: nowrap;
}

.page-about .hero-plate__foot {
  margin: 4px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: 7fr 5fr;
    align-items: end;
    gap: clamp(36px, 5vw, 68px);
  }
}

/* ---------- 使命 / 四类需求 ---------- */
.page-about .mission-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
}

.page-about .mission-title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(28px, 4.6vw, 44px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.015em;
}

.page-about .mission-lead .prose {
  margin-top: 22px;
}

.page-about .mission-lead .prose p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.82;
}

.page-about .mission-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(11, 13, 12, .12);
  border: 1px solid rgba(11, 13, 12, .14);
}

.page-about .mission-item {
  background: var(--paper);
  padding: 20px 20px 22px;
  position: relative;
  transition: background .18s ease;
}

.page-about .mission-item:hover {
  background: #ECE7DC;
}

.page-about .mission-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: var(--lime);
  opacity: 0;
  transition: opacity .18s ease;
}

.page-about .mission-item:hover::before {
  opacity: 1;
}

.page-about .mission-item__idx {
  font-size: 11px;
  letter-spacing: .2em;
  color: #7E8B85;
}

.page-about .mission-item__name {
  margin: 8px 0 8px;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
}

.page-about .mission-item__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #45544E;
}

@media (min-width: 760px) {
  .page-about .mission-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1000px) {
  .page-about .mission-grid {
    grid-template-columns: 6fr 6fr;
    align-items: start;
  }
}

/* ---------- 发展历程 ---------- */
.page-about .about-history {
  position: relative;
  background:
    radial-gradient(80% 60% at 12% 0%, rgba(198, 255, 61, .06), transparent 66%),
    var(--ink);
}

.page-about .about-history__figure {
  margin: 0 0 clamp(34px, 5vw, 54px);
}

.page-about .figure {
  max-width: 100%;
  margin-inline: 0;
}

.page-about .figure__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background:
    repeating-linear-gradient(135deg, rgba(169, 180, 176, .09) 0 2px, transparent 2px 12px),
    radial-gradient(80% 80% at 30% 20%, rgba(198, 255, 61, .10), transparent 70%),
    var(--panel);
  border: 1px solid var(--line);
}

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

.page-about .fig-3x2 .figure__media {
  aspect-ratio: 3 / 2;
}

.page-about .fig-4x3 .figure__media {
  aspect-ratio: 4 / 3;
}

.page-about .fig-10x7 .figure__media {
  aspect-ratio: 10 / 7;
}

.page-about .figure__caption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
}

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

.page-about .tl-flag {
  display: none;
}

.page-about .tl {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--lime) 0%, rgba(198, 255, 61, .5) 42%, rgba(198, 255, 61, .04) 100%);
}

.page-about .tl__item {
  position: relative;
  padding-left: 34px;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 11px;
  height: 11px;
  background: var(--ink);
  border: 1px solid var(--lime);
  box-shadow: 0 0 0 3px rgba(198, 255, 61, .1);
}

.page-about .tl__node {
  border-bottom: 1px solid var(--line);
}

.page-about .tl__node summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
}

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

.page-about .tl__node summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 4px;
}

.page-about .tl__head {
  display: flex;
  flex-direction: column;
  gap: 7px;
  flex: 1 1 auto;
  min-width: 0;
}

.page-about .tl__year {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--lime);
  white-space: nowrap;
}

.page-about .tl__title {
  font-family: var(--font-head);
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
}

.page-about .tl__sign {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-about .tl__sign::before,
.page-about .tl__sign::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--orange);
}

.page-about .tl__sign::before {
  width: 14px;
  height: 1px;
}

.page-about .tl__sign::after {
  width: 1px;
  height: 14px;
  transition: transform .2s ease;
}

.page-about .tl__node[open] .tl__sign::after {
  transform: scaleY(0);
}

.page-about .tl__body {
  padding: 0 0 22px;
  max-width: 70ch;
  color: var(--silver);
  font-size: 14.8px;
  line-height: 1.82;
  border-left: 1px solid rgba(198, 255, 61, .22);
  padding-left: 16px;
  margin-left: 2px;
}

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

@media (min-width: 760px) {
  .page-about .tl__head {
    flex-direction: row;
    align-items: baseline;
    gap: 22px;
  }

  .page-about .tl__year {
    min-width: 104px;
  }
}

@media (min-width: 1000px) {
  .page-about .tl-wrap {
    padding-left: 62px;
  }

  .page-about .tl-flag {
    display: block;
    position: absolute;
    left: 4px;
    top: 14px;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .3em;
    color: var(--mist);
    white-space: nowrap;
  }
}

/* ---------- 团队职能 ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 44px);
}

.page-about .team-roles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .role {
  position: relative;
  background: var(--panel);
  padding: 20px 20px 22px;
  transition: background .18s ease, border-color .18s ease;
}

.page-about .role::after {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 14px;
  height: 14px;
  border-top: 2px solid var(--lime);
  border-left: 2px solid var(--lime);
  opacity: 0;
  transition: opacity .18s ease;
}

.page-about .role:hover {
  background: #16281F;
}

.page-about .role:hover::after {
  opacity: 1;
}

.page-about .role__idx {
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--orange);
}

.page-about .role__name {
  margin: 9px 0 9px;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.32;
  color: var(--white);
}

.page-about .role__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--silver);
}

.page-about .team-figure {
  margin: 0;
}

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

@media (min-width: 1040px) {
  .page-about .team-grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-about .team-figure {
    position: sticky;
    top: 32px;
  }
}

/* ---------- 数据覆盖与服务能力 ---------- */
.page-about .cover-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 52px);
}

.page-about .cover-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  background: rgba(11, 13, 12, .14);
  border: 1px solid rgba(11, 13, 12, .16);
}

.page-about .cover-stat {
  background: var(--paper);
  padding: 18px 20px 20px;
  border-left: 3px solid transparent;
  transition: border-color .18s ease, background .18s ease;
}

.page-about .cover-stat:hover {
  border-left-color: var(--lime);
  background: #ECE7DC;
}

.page-about .cover-stat__cap {
  font-size: 13px;
  line-height: 1.6;
  color: #4C5C55;
  margin: 0;
}

.page-about .cover-stat__val {
  margin: 8px 0 0;
  font-size: clamp(30px, 4.6vw, 42px);
  font-weight: 700;
  line-height: 1.05;
  color: #0B1A14;
}

.page-about .cover-stat__unit {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .04em;
  color: #6B7C74;
  margin-left: 6px;
}

.page-about .cover-note h3 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 700;
  line-height: 1.3;
}

.page-about .cover-note p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.82;
}

.page-about .cover-note ul {
  margin: 0 0 18px;
  padding-left: 0;
  list-style: none;
}

.page-about .cover-note li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  font-size: 14.6px;
  line-height: 1.78;
}

.page-about .cover-note li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 13px;
  height: 2px;
  background: var(--lime);
}

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

@media (min-width: 1000px) {
  .page-about .cover-layout {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }
}

/* ---------- 本地化支持与备案 ---------- */
.page-about .about-local {
  position: relative;
  background:
    radial-gradient(70% 70% at 88% 10%, rgba(255, 106, 43, .10), transparent 66%),
    radial-gradient(70% 70% at 0% 90%, rgba(198, 255, 61, .07), transparent 68%),
    var(--ink);
  border-top: 1px solid var(--line);
}

.page-about .local-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 50px);
  align-items: center;
}

.page-about .local-copy h2 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(26px, 4.4vw, 42px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-about .local-copy .prose {
  margin-top: 20px;
}

.page-about .local-copy .prose p {
  margin: 0 0 15px;
  font-size: 15.4px;
  line-height: 1.82;
  color: var(--silver);
  max-width: 62ch;
}

.page-about .local-icp {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-about .local-icp__val {
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--lime);
  text-shadow: 0 0 12px rgba(198, 255, 61, .3);
}

.page-about .local-icp__btn {
  border-color: var(--line-strong);
  color: var(--silver);
}

.page-about .local-icp__btn:hover {
  border-color: var(--lime);
  color: var(--lime);
}

.page-about .local-figure {
  margin: 0;
}

/* ---------- 收尾行动 ---------- */
.page-about .about-cta {
  padding-top: 0;
}

.page-about .cta-bar {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 32px);
  align-items: center;
  padding: clamp(26px, 4vw, 42px) var(--about-pad);
  background:
    radial-gradient(90% 140% at 8% 0%, rgba(198, 255, 61, .14), transparent 62%),
    linear-gradient(120deg, #0E1F19 0%, var(--carbon) 100%);
  border: 1px solid var(--line-strong);
}

.page-about .cta-bar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 88px;
  height: 3px;
  background: linear-gradient(90deg, var(--lime), rgba(198, 255, 61, 0));
}

.page-about .cta-bar__text h2 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--white);
}

.page-about .cta-bar__text p {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.75;
  color: var(--silver);
  max-width: 52ch;
}

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

@media (min-width: 900px) {
  .page-about .local-grid {
    grid-template-columns: 6fr 5fr;
  }

  .page-about .cta-bar {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .cta-bar__actions {
    justify-content: flex-end;
  }
}

/* ---------- 减弱动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .mission-item,
  .page-about .role,
  .page-about .cover-stat,
  .page-about .tl__sign::after {
    transition: none;
  }
}