/* ===== 品牌中心 · 页面专属样式（作用域 .page-about） ===== */

.page-about {
  --about-rule: rgba(174, 184, 198, .24);
  --about-rule-paper: rgba(30, 23, 18, .14);
  --about-ink-soft: rgba(30, 23, 18, .72);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding-top: 1.5rem;
  padding-bottom: 1.25rem;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(2rem, 6vw, 4rem) clamp(3rem, 7vw, 5.5rem);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -26%;
  inset-inline-end: -20%;
  width: min(620px, 86vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle at 42% 42%, rgba(200, 255, 62, .17), transparent 62%);
  pointer-events: none;
}

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

.page-about .about-hero__eyebrow {
  margin: 0 0 1.1rem;
  font-size: .8125rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--green);
}

.page-about .about-hero__title {
  max-width: 16ch;
  margin: 0 0 1.5rem;
  color: #FFFFFF;
  line-height: 1.08;
}

.page-about .about-hero__lead {
  max-width: 58ch;
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--text-muted-dark);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 2.5rem 0 0;
  padding: 1px;
  list-style: none;
  background: var(--about-rule);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-stat {
  padding: 1.15rem 1.15rem 1.25rem;
  background: linear-gradient(160deg, rgba(52, 227, 211, .09), rgba(200, 255, 62, .05) 70%, rgba(10, 23, 48, .96));
}

.page-about .about-stat__value {
  display: block;
  font-size: clamp(1.5rem, 5.4vw, 2.35rem);
  line-height: 1.05;
  font-weight: 700;
  color: var(--green);
  letter-spacing: -.01em;
}

.page-about .about-stat__unit {
  margin-inline-start: .12em;
  font-size: .46em;
  font-style: normal;
  color: var(--cyan);
}

.page-about .about-stat__label {
  display: block;
  margin-top: .5rem;
  font-size: .8125rem;
  line-height: 1.5;
  color: var(--silver);
  letter-spacing: .04em;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
}

.page-about .about-timeline__banner {
  margin: 0 0 2.75rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--about-rule-paper);
}

.page-about .about-timeline__banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

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

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  top: .9rem;
  bottom: 1.4rem;
  left: 9px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--orange), var(--cyan) 52%, #8FB62C);
}

.page-about .about-tl__item {
  position: relative;
  padding-left: 2.5rem;
  padding-bottom: 2.25rem;
}

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

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 1.15rem;
  width: 12px;
  height: 12px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--cream);
  border: 3px solid var(--orange);
  box-sizing: content-box;
  transition: border-color .24s var(--ease), transform .24s var(--ease);
}

.page-about .about-tl__item.is-open::before,
.page-about .about-tl__item:hover::before {
  border-color: var(--cyan);
  transform: translate(-50%, -50%) scale(1.18);
}

.page-about .about-tl__year {
  margin: 0 0 .35rem;
  font-size: clamp(1.85rem, 6vw, 2.85rem);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--brown);
}

.page-about .about-tl__title {
  margin: 0 0 .5rem;
  font-size: 1.2rem;
  line-height: 1.45;
  color: var(--brown);
}

.page-about .about-tl__sum {
  max-width: 54ch;
  margin: 0 0 .85rem;
  line-height: 1.78;
  color: var(--about-ink-soft);
}

/* 时间轴上的可展开按钮 */
.page-about .about-tl__more {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  width: auto;
  padding: .42rem 1rem .42rem 1.05rem;
  border: 1px solid var(--about-rule-paper);
  border-radius: var(--pill);
  background: transparent;
  color: var(--brown);
  font: inherit;
  font-size: .875rem;
  line-height: 1.4;
  cursor: pointer;
  transition: border-color .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}

.page-about .about-tl__more:hover,
.page-about .about-tl__more:focus-visible {
  border-color: var(--orange);
  background: rgba(255, 122, 42, .1);
  color: var(--brown);
}

.page-about .accordion__icon {
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translate(-1px, -1px);
  transition: transform .26s var(--ease);
}

.page-about .accordion__item.is-open .accordion__icon {
  transform: rotate(225deg) translate(-1px, -1px);
}

.page-about .accordion__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .36s var(--ease);
}

.page-about .accordion__item.is-open .accordion__panel {
  max-height: 420px;
}

.page-about .accordion__inner {
  padding-top: .95rem;
}

.page-about .accordion__content {
  max-width: 56ch;
  margin: 0;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

/* ---------- 数据能力 ---------- */
.page-about .about-data__grid {
  display: grid;
  gap: 1.25rem;
}

.page-about .about-data__card {
  position: relative;
  padding: 1.6rem 1.5rem 1.8rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(174, 184, 198, .2);
  background: linear-gradient(165deg, rgba(255, 255, 255, .09), rgba(255, 255, 255, .028));
  box-shadow: var(--shadow-lift);
}

.page-about .about-data__card::before {
  content: "";
  position: absolute;
  top: 1.55rem;
  inset-inline-start: 0;
  width: 3px;
  height: 34px;
  border-radius: 0 3px 3px 0;
  background: var(--green);
}

.page-about .about-data__metric {
  display: flex;
  align-items: baseline;
  gap: .35rem;
  margin: 0 0 1rem;
}

.page-about .about-data__value {
  font-size: clamp(2.2rem, 7vw, 3.1rem);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -.03em;
  color: var(--green);
}

.page-about .about-data__unit {
  font-size: .875rem;
  color: var(--cyan);
  letter-spacing: .04em;
}

.page-about .about-data__title {
  margin: 0 0 .6rem;
  font-size: 1.2rem;
  line-height: 1.45;
  color: #FFFFFF;
}

.page-about .about-data__text {
  margin: 0;
  line-height: 1.78;
  color: var(--text-muted-dark);
}

.page-about .about-data__cta {
  margin: 2.25rem 0 0;
}

/* ---------- 团队构成 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: 2rem;
}

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-rule-paper);
}

.page-about .about-team__caption {
  margin-top: .85rem;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--about-ink-soft);
}

.page-about .about-team__bars {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1.5rem;
}

.page-about .about-bar__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .55rem;
}

.page-about .about-bar__label {
  font-size: 1rem;
  font-weight: 500;
  color: var(--brown);
}

.page-about .about-bar__num {
  font-size: 1rem;
  font-weight: 700;
  color: var(--orange);
}

.page-about .about-bar__track {
  height: 10px;
  border-radius: var(--pill);
  background: rgba(30, 23, 18, .1);
  overflow: hidden;
}

.page-about .about-bar__fill {
  display: block;
  height: 100%;
  border-radius: var(--pill);
}

.page-about .about-bar__fill--a {
  width: 31%;
  background: linear-gradient(90deg, var(--orange), #FFA763);
}

.page-about .about-bar__fill--b {
  width: 69%;
  background: linear-gradient(90deg, #0A1730, #2E4A78);
}

.page-about .about-bar__note {
  margin: .6rem 0 0;
  font-size: .875rem;
  line-height: 1.72;
  color: var(--about-ink-soft);
}

.page-about .about-team__sla {
  margin-top: 1.75rem;
  padding: 1.25rem 1.35rem 1.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--about-rule-paper);
  background: rgba(255, 122, 42, .07);
}

.page-about .about-team__sla-value {
  margin: 0 0 .4rem;
  font-size: clamp(1.6rem, 5vw, 2.1rem);
  line-height: 1;
  font-weight: 700;
  color: var(--brown);
}

.page-about .about-team__sla-value span {
  font-size: .5em;
  font-weight: 500;
  color: var(--about-ink-soft);
}

.page-about .about-team__sla-text {
  margin: 0;
  line-height: 1.75;
  color: var(--about-ink-soft);
}

/* ---------- 资质与安全 ---------- */
.page-about .about-security__grid {
  display: grid;
  gap: 2rem;
}

.page-about .about-security__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1rem;
}

.page-about .about-security__item {
  padding: 1.3rem 1.35rem 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(174, 184, 198, .2);
  background: linear-gradient(150deg, rgba(52, 227, 211, .08), rgba(255, 255, 255, .03));
}

.page-about .about-security__key {
  display: inline-block;
  margin-bottom: .7rem;
  padding: .18rem .65rem;
  border-radius: var(--pill);
  border: 1px solid rgba(200, 255, 62, .45);
  color: var(--green);
  font-size: .75rem;
  letter-spacing: .1em;
}

.page-about .about-security__name {
  margin: 0 0 .45rem;
  font-size: 1.05rem;
  line-height: 1.5;
  color: #FFFFFF;
}

.page-about .about-security__text {
  margin: 0;
  line-height: 1.75;
  color: var(--text-muted-dark);
}

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

.page-about .about-security__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(174, 184, 198, .22);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco__grid {
  display: grid;
  gap: 2rem;
}

.page-about .about-eco__figure {
  margin: 0;
  padding: 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-rule-paper);
  background: rgba(255, 255, 255, .42);
}

.page-about .about-eco__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-eco__svg .eco-node {
  transition: opacity .26s var(--ease);
}

.page-about .about-eco__figure:hover .eco-node {
  opacity: .3;
}

.page-about .about-eco__figure .eco-node:hover {
  opacity: 1;
}

.page-about .eco-hub-label,
.page-about .eco-label {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  fill: #FFFFFF;
}

.page-about .eco-hub-sub,
.page-about .eco-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--cyan);
}

.page-about .eco-node:not(.eco-node--hub) .eco-label {
  fill: var(--brown);
}

.page-about .eco-node:not(.eco-node--hub) .eco-sub {
  fill: rgba(30, 23, 18, .68);
}

.page-about .about-eco__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1.25rem;
}

.page-about .about-eco__item {
  padding-inline-start: 1.1rem;
  border-inline-start: 3px solid var(--orange);
}

.page-about .about-eco__item:nth-child(2) {
  border-inline-start-color: #7FA324;
}

.page-about .about-eco__item:nth-child(3) {
  border-inline-start-color: var(--brown);
}

.page-about .about-eco__name {
  margin: 0 0 .35rem;
  font-size: 1.05rem;
  line-height: 1.5;
  color: var(--brown);
}

.page-about .about-eco__text {
  margin: 0;
  line-height: 1.78;
  color: var(--about-ink-soft);
}

.page-about .about-eco__cta {
  margin: 1.75rem 0 0;
}

/* ---------- 荣誉与下一阶段 ---------- */
.page-about .about-honor__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1rem;
}

.page-about .about-honor__item {
  position: relative;
  padding: 1.35rem 1.35rem 1.45rem 3.1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(174, 184, 198, .22);
  background: linear-gradient(150deg, rgba(200, 255, 62, .09), rgba(255, 255, 255, .03));
}

.page-about .about-honor__mark {
  position: absolute;
  top: 1.6rem;
  inset-inline-start: 1.35rem;
  width: 12px;
  height: 12px;
  border-radius: 2px;
  transform: rotate(45deg);
  background: var(--green);
}

.page-about .about-honor__name {
  margin: 0 0 .4rem;
  font-size: 1.1rem;
  line-height: 1.5;
  color: #FFFFFF;
}

.page-about .about-honor__text {
  margin: 0;
  line-height: 1.75;
  color: var(--text-muted-dark);
}

.page-about .about-honor__next {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--about-rule);
}

.page-about .about-honor__next-text {
  max-width: 62ch;
  margin: 0 0 1.4rem;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--text-muted-dark);
}

.page-about .about-honor__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: 0;
}

/* ---------- 媒体查询 ---------- */

@media (min-width: 700px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stat {
    padding: 1.35rem 1.3rem 1.45rem;
  }

  .page-about .about-eco__figure {
    padding: 1.5rem;
  }
}

@media (min-width: 880px) {
  .page-about .about-data__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    padding-bottom: 58px;
  }

  .page-about .about-data__card:nth-child(2) {
    transform: translateY(29px);
  }

  .page-about .about-data__card:nth-child(3) {
    transform: translateY(58px);
  }

  .page-about .about-team__grid {
    grid-template-columns: 5fr 4fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-security__grid {
    grid-template-columns: 6fr 4fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-eco__grid {
    grid-template-columns: 5fr 4fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-honor__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero {
    padding-block: clamp(3rem, 5vw, 5rem) clamp(4rem, 6vw, 6rem);
  }

  .page-about .about-hero__lead {
    font-size: 1.125rem;
  }

  .page-about .about-tl__item {
    padding-left: 3.25rem;
    padding-bottom: 2.75rem;
  }

  .page-about .about-timeline__list::before {
    left: 11px;
  }

  .page-about .about-tl__item::before {
    left: 12px;
  }

  .page-about .about-team__figure img {
    aspect-ratio: 7 / 5;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl__item::before,
  .page-about .accordion__icon,
  .page-about .accordion__panel,
  .page-about .about-eco__svg .eco-node {
    transition: none;
  }
}