/* ================= page-about 品牌与核心团队 ================= */

.page-about {
  background: var(--ink-900);
  color: var(--white);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .about-sec {
  padding: 64px 0;
}

.page-about .about-h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 5.6vw, 54px);
  line-height: 1.03;
  letter-spacing: -.02em;
  margin: 14px 0 0;
  color: var(--white);
}

.page-about .about-body {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(234, 241, 246, .78);
}

.page-about [data-reveal] {
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: 32px 0 96px;
  background:
    radial-gradient(92% 72% at 92% 2%, rgba(226, 58, 34, .30), transparent 62%),
    radial-gradient(70% 60% at 4% 98%, rgba(47, 240, 200, .10), transparent 66%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-850) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 58px), 0 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -4%;
  bottom: 0;
  width: 66%;
  height: 52%;
  background: linear-gradient(135deg, rgba(255, 123, 46, .24), rgba(226, 58, 34, 0) 72%);
  clip-path: polygon(24% 100%, 100% 0, 100% 100%);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 28px;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 8.8vw, 106px);
  line-height: .96;
  letter-spacing: -.02em;
  margin: 18px 0 0;
  color: var(--white);
}

.page-about .about-hl {
  position: relative;
  display: inline-block;
  padding: 0 .14em;
  color: var(--ink-900);
  z-index: 0;
}

.page-about .about-hl::before {
  content: "";
  position: absolute;
  inset: .1em -.02em .08em;
  background: linear-gradient(118deg, var(--orange), var(--red));
  transform: skewX(-10deg);
  z-index: -1;
}

.page-about .about-hero__lead {
  margin: 26px 0 0;
  max-width: 58ch;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(234, 241, 246, .82);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-about .about-stats {
  list-style: none;
  margin: 46px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-top: 2px solid var(--red);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 14px;
  background: rgba(16, 46, 69, .82);
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-stat__label {
  font-size: 13px;
  letter-spacing: .07em;
  color: rgba(234, 241, 246, .68);
}

/* ---------- 坐标由来 ---------- */

.page-about .about-origin {
  background: var(--ink-900);
}

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

.page-about .about-points {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-points li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(234, 241, 246, .85);
}

.page-about .about-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 14px;
  height: 2px;
  background: var(--red);
}

/* ---------- 团队分工 ---------- */

.page-about .about-team {
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-850) 58%, var(--ink-900) 100%);
}

.page-about .about-team__head {
  max-width: 74ch;
}

.page-about .about-team__figure {
  margin: 34px 0 0;
}

.page-about .about-bars {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-bar {
  padding: 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
  background: rgba(16, 46, 69, .62);
  transition: transform .35s var(--ease), border-color .35s var(--ease), background .35s var(--ease);
}

.page-about .about-bar:hover,
.page-about .about-bar:focus-within {
  transform: translate(4px, -4px);
  border-left-color: var(--cyan);
  background: rgba(16, 46, 69, .92);
}

.page-about .about-bar--data { border-left-color: var(--orange); }
.page-about .about-bar--edit { border-left-color: var(--clay); }
.page-about .about-bar--city { border-left-color: var(--moss); }

.page-about .about-bar__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.page-about .about-bar__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: .01em;
  color: var(--white);
}

.page-about .about-bar__num {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-bar__track {
  height: 6px;
  margin-top: 14px;
  background: rgba(234, 241, 246, .12);
  overflow: hidden;
}

.page-about .about-bar__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--red), var(--orange));
}

.page-about .about-bar--eng .about-bar__fill { width: 33%; }
.page-about .about-bar--data .about-bar__fill { width: 30%; }
.page-about .about-bar--edit .about-bar__fill { width: 24%; }
.page-about .about-bar--city .about-bar__fill { width: 13%; background: linear-gradient(90deg, var(--clay), var(--moss)); }

.page-about .about-bar__text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(234, 241, 246, .76);
}

/* ---------- 数据覆盖 ---------- */

.page-about .about-coverage {
  background: var(--ink-900);
}

.page-about .about-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
  margin-top: 34px;
}

.page-about .about-metric {
  position: relative;
  padding-top: 16px;
  border-top: 2px solid var(--line-strong);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-metric::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 36px;
  height: 2px;
  background: var(--cyan);
}

.page-about .about-metric--orange::before { background: var(--orange); }

.page-about .about-metric__num {
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--white);
}

.page-about .about-metric--orange .about-metric__num { color: var(--orange); }

.page-about .about-metric__label {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(234, 241, 246, .7);
}

.page-about .about-coverage__maparea {
  margin-top: 30px;
}

.page-about .about-map {
  position: relative;
  aspect-ratio: 16 / 10;
  min-height: 210px;
  border: 1px solid var(--line);
  background-color: rgba(16, 46, 69, .5);
  background-image: radial-gradient(rgba(234, 241, 246, .17) 1px, transparent 1.2px);
  background-size: 24px 24px;
  overflow: hidden;
}

.page-about .about-map::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(226, 58, 34, .16), transparent 58%);
  pointer-events: none;
}

.page-about .about-map__pin {
  position: absolute;
  transform: translate(-50%, -50%);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border: 1px solid rgba(47, 240, 200, .38);
  background: rgba(10, 26, 42, .78);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-about .about-map__pin i {
  width: 8px;
  height: 8px;
  background: var(--cyan);
  transform: rotate(45deg);
  animation: aboutPulse 2.4s var(--ease) infinite;
}

.page-about .about-map__pin--sh { left: 76%; top: 36%; }
.page-about .about-map__pin--cd { left: 32%; top: 54%; }
.page-about .about-map__pin--gz { left: 64%; top: 80%; }

@keyframes aboutPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .3; }
}

.page-about .about-table-wrap {
  margin-top: 30px;
  border: 1px solid var(--line);
  overflow-x: auto;
}

.page-about .about-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-about .about-table th,
.page-about .about-table td {
  padding: 15px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.page-about .about-table thead th {
  background: rgba(16, 46, 69, .95);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  font-weight: 500;
  color: var(--cyan);
}

.page-about .about-table tbody tr:nth-child(even) {
  background: rgba(43, 53, 65, .4);
}

.page-about .about-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-about .about-table td:first-child {
  color: var(--white);
  font-weight: 600;
}

.page-about .about-table td:nth-child(2) {
  color: rgba(234, 241, 246, .76);
}

.page-about .about-table td:nth-child(3) {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--orange);
  white-space: nowrap;
}

/* ---------- 三个阶段 ---------- */

.page-about .about-stages {
  background: linear-gradient(180deg, var(--ink-850) 0%, var(--ink-900) 100%);
}

.page-about .about-stages__grid {
  display: grid;
  gap: 32px;
}

.page-about .about-axis {
  list-style: none;
  margin: 26px 0 0;
  padding: 0 0 0 22px;
  position: relative;
}

.page-about .about-axis::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--clay), var(--orange), var(--moss));
}

.page-about .about-axis__item {
  position: relative;
  padding: 10px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(234, 241, 246, .78);
}

.page-about .about-axis__dot {
  position: absolute;
  left: -22px;
  top: 15px;
  width: 11px;
  height: 11px;
  background: var(--clay);
  transform: rotate(45deg);
}

.page-about .about-axis__item--grow .about-axis__dot { background: var(--orange); }
.page-about .about-axis__item--now .about-axis__dot { background: var(--moss); }

.page-about .about-rail {
  display: flex;
  gap: 16px;
  margin: 0;
  padding-bottom: 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-rail > * {
  flex: 0 0 min(85%, 420px);
  scroll-snap-align: start;
}

.page-about .about-stage {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 20px 26px;
  border: 1px solid var(--line);
  border-top: 4px solid var(--clay);
  background: rgba(16, 46, 69, .68);
}

.page-about .about-stage--v2 { border-top-color: var(--orange); }
.page-about .about-stage--v3 { border-top-color: var(--orange); }
.page-about .about-stage--v4 { border-top-color: var(--moss); }

.page-about .about-stage__ver {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-about .about-stage__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.25;
  color: var(--white);
}

.page-about .about-stage__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(234, 241, 246, .78);
}

/* ---------- 米白分区通用 ---------- */

.page-about .about-paper {
  background: var(--paper);
  color: var(--ink-900);
}

.page-about .about-paper .about-h2 { color: var(--ink-900); }
.page-about .about-paper .about-body { color: rgba(10, 26, 42, .76); }
.page-about .about-paper .index-label { color: var(--red-deep); }
.page-about .about-paper .media-caption { color: rgba(10, 26, 42, .62); }

/* ---------- 合作生态 ---------- */

.page-about .about-eco {
  clip-path: polygon(0 0, 100% 26px, 100% 100%, 0 100%);
  padding-top: 82px;
}

.page-about .about-eco__grid {
  gap: 34px;
}

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

.page-about .about-eco__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 26px;
  background: rgba(10, 26, 42, .14);
  border-left: 4px solid var(--red);
}

.page-about .about-eco__stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: rgba(255, 255, 255, .5);
}

.page-about .about-eco__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--red-deep);
}

.page-about .about-eco__label {
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(10, 26, 42, .66);
}

.page-about .about-eco__cards {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-pcard {
  padding: 16px 18px;
  border: 1px solid rgba(10, 26, 42, .14);
  border-left: 3px solid var(--clay);
  background: rgba(255, 255, 255, .56);
  transition: transform .35s var(--ease), border-color .35s var(--ease);
}

.page-about .about-pcard:hover {
  transform: translate(4px, -4px);
  border-left-color: var(--red);
}

.page-about .about-pcard__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink-900);
}

.page-about .about-pcard__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(10, 26, 42, .7);
}

/* ---------- 两条流水线 ---------- */

.page-about .about-pipe {
  background: var(--ink-900);
}

.page-about .about-pipe__grid {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.page-about .about-pipe__card {
  position: relative;
  padding: 26px 22px 24px;
  border: 1px solid var(--line);
  background: rgba(16, 46, 69, .6);
  overflow: hidden;
}

.page-about .about-pipe__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(180deg, var(--red), var(--orange));
}

.page-about .about-pipe__card--data::before {
  background: linear-gradient(180deg, var(--cyan), var(--moss));
}

.page-about .about-pipe__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-about .about-pipe__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.28;
  color: var(--white);
}

.page-about .about-pipe__text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(234, 241, 246, .78);
}

.page-about .about-pipe__link {
  display: inline-block;
  margin-top: 18px;
  padding-bottom: 3px;
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 123, 46, .45);
}

.page-about .about-pipe__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 服务标准 ---------- */

.page-about .about-service {
  clip-path: polygon(0 26px, 100% 0, 100% 100%, 0 100%);
  padding-top: 86px;
}

.page-about .about-service__grid {
  gap: 34px;
}

.page-about .about-service__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-btn--dark {
  color: var(--ink-900);
  border-color: rgba(10, 26, 42, .35);
}

.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-flow__item {
  position: relative;
  padding: 20px 20px 20px 68px;
  border: 1px solid rgba(10, 26, 42, .14);
  background: rgba(255, 255, 255, .54);
}

.page-about .about-flow__idx {
  position: absolute;
  left: 18px;
  top: 20px;
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--red-deep);
}

.page-about .about-flow__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--ink-900);
}

.page-about .about-flow__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(10, 26, 42, .7);
}

/* ---------- 结尾 CTA ---------- */

.page-about .about-cta {
  position: relative;
  overflow: hidden;
  padding: 66px 0 78px;
  background:
    radial-gradient(80% 120% at 96% 0%, rgba(226, 58, 34, .34), transparent 62%),
    linear-gradient(180deg, var(--ink-850), var(--ink-900));
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 48px));
}

.page-about .about-cta__inner {
  display: grid;
  gap: 26px;
}

.page-about .about-cta__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 5vw, 46px);
  line-height: 1.05;
  letter-spacing: -.02em;
  margin: 0;
  color: var(--white);
}

.page-about .about-cta__lead {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(234, 241, 246, .78);
}

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

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-about .about-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-about .about-sec {
    padding: 84px 0;
  }

  .page-about .about-hero {
    padding: 48px 0 116px;
  }

  .page-about .about-stats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-stat__num {
    font-size: 34px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 40px;
  }

  .page-about .about-cta__links {
    justify-content: flex-end;
    max-width: 420px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-sec {
    padding: 96px 0;
  }

  .page-about .about-stages__grid {
    grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-stages__side {
    position: sticky;
    top: 128px;
  }

  .page-about .about-pipe__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-rail > * {
    flex: 0 0 400px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-map__pin i {
    animation: none;
  }

  .page-about .about-bar,
  .page-about .about-pcard,
  .page-about [data-reveal] {
    transition: none;
  }

  .page-about .about-bar:hover,
  .page-about .about-bar:focus-within,
  .page-about .about-pcard:hover {
    transform: none;
  }
}