.page-about {
  --about-cut: 18px;
  --about-cut-sm: 14px;
  display: block;
  padding-block: clamp(28px, 5vw, 54px) clamp(64px, 10vw, 118px);
  color: var(--phx-cream);
  font-family: var(--phx-font-sans);
}

.page-about .phx-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(20px, 4vw, 34px);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--phx-mute);
}

.page-about .phx-breadcrumb__item a {
  color: var(--phx-mute);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--phx-ease), border-color .25s var(--phx-ease);
}

.page-about .phx-breadcrumb__item a:hover,
.page-about .phx-breadcrumb__item a:focus-visible {
  color: var(--phx-gold-soft);
  border-bottom-color: var(--phx-gold-soft);
}

.page-about .phx-breadcrumb__item + .phx-breadcrumb__item::before {
  content: "/";
  margin-right: 10px;
  color: var(--phx-line);
}

.page-about .phx-breadcrumb__item:last-child {
  color: var(--phx-cream);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 4.4vw, 52px) clamp(20px, 4vw, 50px) clamp(30px, 5vw, 56px);
  background:
    radial-gradient(130% 150% at 0% 0%, rgba(240, 169, 58, .16), transparent 58%),
    linear-gradient(180deg, var(--phx-ink), rgba(10, 12, 17, .55));
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: linear-gradient(90deg, var(--phx-gold), var(--phx-ember) 44%, transparent 92%);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--phx-gold);
}

.page-about .about-hero__title {
  margin: 0;
  font-size: clamp(32px, 6.4vw, 60px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--phx-cream);
  text-shadow: 1.5px 0 0 rgba(53, 227, 210, .22), -1.5px 0 0 rgba(225, 90, 43, .22);
}

.page-about .about-hero__lede {
  margin: clamp(16px, 2.6vw, 24px) 0 0;
  max-width: 62ch;
  font-size: clamp(15.5px, 1.8vw, 17px);
  line-height: 1.85;
  color: rgba(242, 231, 211, .8);
}

/* ---------- 章节骨架 ---------- */

.page-about .about-block {
  margin-top: clamp(56px, 9vw, 108px);
}

.page-about .about-block__head {
  margin-bottom: clamp(22px, 3.6vw, 38px);
}

.page-about .about-block__num {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: .26em;
  color: var(--phx-gold);
}

.page-about .about-block__num::before {
  content: "";
  width: 20px;
  height: 2px;
  background: var(--phx-ember);
}

.page-about .about-block__title {
  margin: 0;
  font-size: clamp(24px, 4.2vw, 40px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--phx-cream);
}

.page-about .about-block__sub {
  margin: 12px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.7vw, 16.5px);
  line-height: 1.8;
  color: rgba(242, 231, 211, .68);
}

.page-about .about-layout-2 {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-about .about-layout-2--data {
  margin-top: clamp(26px, 4vw, 42px);
}

.page-about .about-prose {
  max-width: 64ch;
}

.page-about .about-text {
  margin: 0;
  font-size: clamp(16px, 1.7vw, 17px);
  line-height: 1.85;
  color: rgba(242, 231, 211, .82);
}

.page-about .about-text + .about-text {
  margin-top: 16px;
}

.page-about .about-text--wide {
  margin-top: clamp(22px, 3.4vw, 34px);
  max-width: 78ch;
}

.page-about .about-note {
  padding: 6px 0 6px 20px;
  border-left: 3px solid var(--phx-ember);
}

.page-about .about-note__label {
  margin: 0;
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--phx-ember);
}

.page-about .about-note__text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 231, 211, .7);
}

/* ---------- 图片 ---------- */

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

.page-about .about-figure--band {
  margin: clamp(28px, 4vw, 46px) auto 0;
  max-width: min(520px, 100%);
}

.page-about .about-media {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(rgba(38, 48, 60, .55) 1px, transparent 1px) 0 0 / 100% 32px,
    linear-gradient(90deg, rgba(38, 48, 60, .55) 1px, transparent 1px) 0 0 / 32px 100%,
    var(--phx-ink);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, 0 100%);
}

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

.page-about .about-figure__cap {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--phx-mute);
}

/* ---------- 时间轴 ---------- */

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding-left: 30px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--phx-gold), var(--phx-ember) 46%, var(--phx-cyan));
  opacity: .5;
}

.page-about .about-timeline__item {
  position: relative;
  margin-bottom: 16px;
  padding: 20px 18px;
  background: var(--phx-ink);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  box-shadow: inset 0 0 0 1px var(--phx-line);
  transition: transform .3s var(--phx-ease), box-shadow .3s var(--phx-ease);
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 26px;
  width: 12px;
  height: 12px;
  background: var(--phx-night);
  border: 2px solid var(--phx-gold);
  transform: rotate(45deg);
  transition: border-color .3s var(--phx-ease), background-color .3s var(--phx-ease);
}

.page-about .about-timeline__item:hover,
.page-about .about-timeline__item:focus {
  transform: translateY(-4px);
  box-shadow: inset 0 0 0 1px var(--phx-gold-soft);
  outline: none;
}

.page-about .about-timeline__item:focus-visible {
  outline: 2px solid var(--phx-cyan);
  outline-offset: 4px;
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus::before {
  border-color: var(--phx-cyan);
  background: rgba(53, 227, 210, .22);
}

.page-about .about-timeline__year {
  margin: 0;
  font-size: clamp(25px, 4.6vw, 32px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--phx-gold);
}

.page-about .about-timeline__name {
  margin: 10px 0 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--phx-cream);
}

.page-about .about-timeline__desc {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(242, 231, 211, .74);
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  display: grid;
  gap: clamp(24px, 4vw, 38px);
}

.page-about .about-team__panel {
  padding: clamp(22px, 3.2vw, 34px);
  background: var(--phx-cream);
  color: var(--phx-brown);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.page-about .about-team__panel-title {
  margin: 0 0 6px;
  font-size: clamp(19px, 2.6vw, 23px);
  font-weight: 900;
  line-height: 1.35;
  color: var(--phx-brown);
}

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

.page-about .about-team__row {
  padding: 16px 0;
  border-bottom: 1px solid rgba(46, 36, 27, .16);
}

.page-about .about-team__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-team__line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .about-team__role {
  font-size: 16px;
  font-weight: 700;
  color: var(--phx-brown);
}

.page-about .about-team__count {
  font-size: 14px;
  color: rgba(46, 36, 27, .62);
}

.page-about .about-team__bar {
  display: block;
  height: 7px;
  margin: 10px 0;
  background: rgba(46, 36, 27, .13);
  overflow: hidden;
}

.page-about .about-team__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--phx-ember), var(--phx-gold));
}

.page-about .about-team__fill--tech { width: 39%; }
.page-about .about-team__fill--data { width: 32%; }
.page-about .about-team__fill--cs { width: 29%; }

.page-about .about-team__duty {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(46, 36, 27, .78);
}

/* ---------- 数据 ---------- */

.page-about .about-data {
  position: relative;
  padding: clamp(4px, 1vw, 8px);
  background:
    linear-gradient(rgba(38, 48, 60, .5) 1px, transparent 1px) 0 0 / 100% 34px,
    linear-gradient(90deg, rgba(38, 48, 60, .5) 1px, transparent 1px) 0 0 / 34px 100%,
    var(--phx-night);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-about .about-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(38, 48, 60, .9);
  box-shadow: 0 0 0 1px rgba(38, 48, 60, .9);
}

.page-about .about-metric {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 14px;
  background: rgba(10, 12, 17, .95);
}

.page-about .about-metric__value {
  display: flex;
  align-items: center;
  font-size: clamp(21px, 3.2vw, 30px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: .01em;
  color: var(--phx-gold);
}

.page-about .about-metric__value--live {
  color: var(--phx-cyan);
}

.page-about .about-metric__dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--phx-cyan);
  animation: about-pulse 1.6s var(--phx-ease) infinite;
}

.page-about .about-metric__label {
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--phx-mute);
}

@keyframes about-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .3; transform: scale(.7); }
}

/* ---------- 服务 ---------- */

.page-about .about-service {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-about .about-service__card {
  position: relative;
  padding: clamp(22px, 3.2vw, 34px);
  background: linear-gradient(160deg, rgba(23, 16, 8, .95), rgba(10, 12, 17, .92));
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  box-shadow: inset 0 0 0 1px var(--phx-line);
  transition: box-shadow .3s var(--phx-ease), transform .3s var(--phx-ease);
}

.page-about .about-service__card:hover {
  transform: translateY(-4px);
  box-shadow: inset 0 0 0 1px rgba(240, 169, 58, .5);
}

.page-about .about-service__card--alt {
  background: linear-gradient(160deg, rgba(23, 16, 8, .95), rgba(53, 227, 210, .05));
}

.page-about .about-service__card-title {
  margin: 0 0 14px;
  font-size: clamp(18px, 2.4vw, 21px);
  font-weight: 900;
  line-height: 1.35;
  color: var(--phx-cream);
}

.page-about .about-service__stat {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--phx-gold);
}

.page-about .about-service__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.82;
  color: rgba(242, 231, 211, .76);
}

.page-about .about-service__text + .about-service__text {
  margin-top: 14px;
}

.page-about .about-honor {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-about .about-honor__item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--phx-line);
}

.page-about .about-honor__item:last-child {
  border-bottom: 0;
}

.page-about .about-honor__year {
  flex: 0 0 auto;
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--phx-ember);
}

.page-about .about-honor__text {
  font-size: 15.5px;
  line-height: 1.7;
  color: rgba(242, 231, 211, .85);
}

/* ---------- 引导 ---------- */

.page-about .about-cta {
  margin-top: clamp(52px, 9vw, 102px);
  padding: clamp(26px, 4.6vw, 52px);
  background: linear-gradient(125deg, rgba(225, 90, 43, .2), rgba(240, 169, 58, .08) 46%, rgba(53, 227, 210, .09));
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
  box-shadow: inset 0 0 0 1px rgba(240, 169, 58, .3);
}

.page-about .about-cta__title {
  margin: 0;
  font-size: clamp(22px, 3.6vw, 33px);
  font-weight: 900;
  line-height: 1.24;
  color: var(--phx-cream);
}

.page-about .about-cta__text {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.7vw, 16.5px);
  line-height: 1.85;
  color: rgba(242, 231, 211, .8);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-about .about-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-metric {
    padding: 22px 20px;
  }
}

@media (min-width: 900px) {
  .page-about .about-layout-2 {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

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

  .page-about .about-timeline {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding-left: 0;
  }

  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-1px);
  }

  .page-about .about-timeline__item {
    width: calc(50% - 44px);
    margin-bottom: 0;
  }

  .page-about .about-timeline__item:nth-child(odd) {
    justify-self: start;
  }

  .page-about .about-timeline__item:nth-child(even) {
    justify-self: end;
  }

  .page-about .about-timeline__item:nth-child(odd)::before {
    left: auto;
    right: -50px;
  }

  .page-about .about-timeline__item:nth-child(even)::before {
    left: -50px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero {
    padding-inline: 56px;
  }
}

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

  .page-about .about-timeline__item,
  .page-about .about-service__card {
    transition: none;
  }

  .page-about .about-timeline__item:hover,
  .page-about .about-timeline__item:focus,
  .page-about .about-service__card:hover {
    transform: none;
  }
}