.page-about {
  --about-gap: clamp(56px, 8vw, 104px);
  --about-line: rgba(201, 162, 39, 0.22);
  --about-line-soft: rgba(201, 162, 39, 0.12);
  --about-muted: #B9B3A5;
  max-width: 1240px;
  margin-inline: auto;
  padding: 20px var(--gutter) 112px;
}

.page-about > section {
  margin-top: var(--about-gap);
}

.page-about .about-node__card,
.page-about .about-mission__body,
.page-about .about-region__body,
.page-about .about-team__body {
  min-width: 0;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  margin-top: 8px;
  padding: clamp(28px, 5vw, 64px) clamp(20px, 4vw, 52px) clamp(30px, 4vw, 52px);
  border: 1px solid var(--about-line-soft);
  background: linear-gradient(160deg, rgba(23, 26, 32, 0.85), rgba(14, 16, 19, 0.6));
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 95% at 12% -10%, rgba(201, 162, 39, 0.16), transparent 62%),
    radial-gradient(90% 80% at 100% 110%, rgba(31, 58, 52, 0.42), transparent 66%);
}

.page-about .about-hero > * {
  position: relative;
}

.page-about .about-hero h1 {
  max-width: 15ch;
  margin: 0.5em 0 0;
  font-size: clamp(32px, 6.2vw, 74px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-hero .page-lede {
  max-width: 60ch;
  margin-top: 24px;
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.9;
  color: var(--about-muted);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 24px;
  margin: 40px 0 0;
  padding-top: 26px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-hero__fact dt {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--index);
}

.page-about .about-hero__fact dd {
  margin: 0;
  font-size: clamp(22px, 2.6vw, 28px);
  letter-spacing: 0.05em;
  color: var(--gold);
}

/* ---------- 使命陈述 ---------- */

.page-about .about-mission {
  position: relative;
  padding: clamp(56px, 9vw, 112px) clamp(20px, 4vw, 48px) clamp(48px, 7vw, 80px);
  border-block: 1px solid var(--about-line);
  background:
    linear-gradient(155deg, rgba(201, 162, 39, 0.09), rgba(31, 58, 52, 0.16) 58%, transparent 88%);
}

.page-about .about-mission__statement {
  max-width: 16ch;
  margin: 0.35em 0 0;
  font-size: clamp(28px, 5.2vw, 56px);
  font-weight: 900;
  line-height: 1.32;
  letter-spacing: -0.005em;
  color: var(--paper);
}

.page-about .about-mission__note {
  position: absolute;
  top: clamp(52px, 8vw, 104px);
  right: clamp(20px, 4vw, 48px);
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--seal);
  transform: rotate(3deg);
  opacity: 0.85;
}

.page-about .about-mission__body {
  display: grid;
  gap: 20px;
  max-width: 68ch;
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .about-mission__body p {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--about-muted);
}

.page-about .about-mission__body strong {
  color: var(--gold-soft);
  font-weight: 700;
}

.page-about .about-mission__paths {
  display: grid;
  gap: 1px;
  margin: clamp(36px, 5vw, 56px) 0 0;
  padding: 0;
  list-style: none;
  grid-template-columns: 1fr;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

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

.page-about .about-mission__path a {
  display: grid;
  gap: 8px;
  height: 100%;
  padding: 22px 24px 24px;
  text-decoration: none;
  color: inherit;
  transition: background-color 0.18s var(--ease);
}

.page-about .about-mission__path a:hover,
.page-about .about-mission__path a:focus-visible {
  background: rgba(201, 162, 39, 0.08);
}

.page-about .about-mission__path-no {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-about .about-mission__path strong {
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-mission__path em {
  font-style: normal;
  font-size: 13px;
  line-height: 1.75;
  color: var(--index);
}

/* ---------- 时间轴 ---------- */

.page-about .about-timeline__figure {
  margin: clamp(28px, 4vw, 44px) 0 clamp(36px, 5vw, 58px);
}

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

.page-about .about-node {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 34px;
}

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

.page-about .about-node__year {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .about-node__year::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), rgba(201, 162, 39, 0.06));
  opacity: 0.7;
}

.page-about .about-node__card {
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-about .about-node__card:hover,
.page-about .about-node__card:focus-within {
  transform: translateY(-2px);
  border-color: var(--gold);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

/* ---------- 团队 ---------- */

.page-about .about-team__grid {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

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

.page-about .about-team__body p {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--about-muted);
}

.page-about .about-bars {
  display: grid;
  gap: 26px;
  margin: clamp(28px, 4vw, 38px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-bars__item {
  display: grid;
  gap: 10px;
}

.page-about .about-bars__label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin: 0;
  font-size: 14px;
  color: var(--paper);
}

.page-about .about-bars__label .mono {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .about-bars__track {
  position: relative;
  height: 14px;
  overflow: hidden;
  border: 1px solid var(--about-line);
  background: rgba(244, 240, 230, 0.05);
}

.page-about .about-bars__fill {
  display: block;
  height: 100%;
  transition: filter 0.2s var(--ease), transform 0.24s var(--ease);
  transform-origin: left center;
}

.page-about .about-bars__item--tech .about-bars__fill {
  width: 65%;
  background: linear-gradient(90deg, var(--gold-ink), var(--gold), var(--gold-soft));
}

.page-about .about-bars__item--care .about-bars__fill {
  width: 35%;
  background: linear-gradient(90deg, var(--pine), var(--pine-soft));
}

.page-about .about-bars__item:hover .about-bars__fill {
  filter: brightness(1.2);
  transform: scaleY(1.15);
}

.page-about .about-bars__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--index);
}

/* ---------- 资质与认可 ---------- */

.page-about .about-honors__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-line);
}

.page-about .about-honors__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: clamp(22px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-honors__year {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-honors__title {
  margin: 0;
  font-size: clamp(17px, 1.7vw, 20px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .about-honors__desc {
  margin: 10px 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-muted);
}

/* ---------- 服务覆盖 ---------- */

.page-about .about-region__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .about-region__body p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--about-muted);
}

.page-about .about-region__facts {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid var(--about-line);
}

.page-about .about-region__facts li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-size: 14px;
  color: var(--about-muted);
}

.page-about .about-region__facts .mono {
  flex: 0 0 auto;
  min-width: 3.5em;
  font-size: 18px;
  letter-spacing: 0.05em;
  color: var(--gold);
}

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

/* ---------- 收束 ---------- */

.page-about .about-cta {
  display: grid;
  gap: 18px;
  padding: clamp(30px, 5vw, 56px);
  border: 1px solid var(--about-line);
  background:
    linear-gradient(150deg, rgba(31, 58, 52, 0.55), rgba(58, 46, 36, 0.28) 55%, rgba(14, 16, 19, 0.2));
}

.page-about .about-cta h2 {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-cta__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--about-muted);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ---------- 常驻回首页入口 ---------- */

.page-about .about-home-fab {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 30;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--paper);
  text-decoration: none;
  border: 1px solid var(--about-line);
  background: rgba(23, 26, 32, 0.88);
  backdrop-filter: blur(6px);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-about .about-home-fab .mono {
  color: var(--gold);
}

.page-about .about-home-fab:hover,
.page-about .about-home-fab:focus-visible {
  border-color: var(--gold);
  transform: translateY(-2px);
}

/* ---------- 图片兜底 ---------- */

.page-about .media-frame {
  overflow: hidden;
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-node {
    grid-template-columns: minmax(110px, 20%) minmax(0, 1fr);
    gap: 44px;
    padding-bottom: 42px;
  }

  .page-about .about-node__year {
    justify-content: flex-start;
    padding-top: 24px;
    align-self: start;
  }

  .page-about .about-node__year::after {
    max-width: 44px;
  }

  .page-about .about-honors__item {
    grid-template-columns: minmax(120px, 180px) minmax(0, 1fr);
    gap: 36px;
  }

  .page-about .about-honors__year {
    padding-top: 4px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-region__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: center;
  }

  .page-about .about-timeline__figure {
    max-width: 720px;
  }
}

@media (max-width: 899px) {
  .page-about .about-mission__note {
    position: static;
    display: block;
    writing-mode: horizontal-tb;
    margin: 14px 0 0;
    transform: none;
  }

  .page-about .about-home-fab {
    font-size: 12px;
    padding: 9px 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node__card,
  .page-about .about-bars__fill,
  .page-about .about-home-fab,
  .page-about .about-mission__path a {
    transition: none;
  }
}