/* ===== 品牌档案页 · page-about ===== */

.page-about {
  padding-bottom: 0;
}

/* —— 面包屑间距 —— */
.page-about .crumbs {
  padding-top: 20px;
  padding-bottom: 4px;
}

/* —— 档案概览（首屏） —— */
.page-about .about-hero {
  padding: 28px 0 52px;
}

.page-about .about-hero__inner {
  display: grid;
  gap: 30px;
}

.page-about .about-index {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 18px;
  border-top: 1px dashed var(--line-soft);
}

.page-about .about-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0 14px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--silent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-index__num {
  font-size: 11px;
  color: var(--violet);
}

.page-about .about-index__link:hover,
.page-about .about-index__link.is-current {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-about .about-index__link:hover .about-index__num,
.page-about .about-index__link.is-current .about-index__num {
  color: var(--gold);
}

.page-about .about-hero__main {
  display: grid;
  gap: 30px;
  min-width: 0;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 8vw, 56px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--mist);
  max-width: 18ch;
}

.page-about .about-hero__lead {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 44ch;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 14px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-stats .stat {
  min-width: 0;
}

.page-about .about-stats .stat__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 6.4vw, 40px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--cyan);
  text-shadow: 0 0 22px rgba(47, 227, 210, .22);
  margin: 0;
}

.page-about .about-stats .stat__num .stat__unit {
  font-size: .5em;
  margin-left: 3px;
  color: var(--gold);
  text-shadow: none;
}

.page-about .about-stats .stat__label {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--silent);
  line-height: 1.5;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--night);
  min-width: 0;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(150deg, rgba(47, 227, 210, .14), transparent 46%, rgba(122, 107, 196, .16)),
    linear-gradient(0deg, rgba(10, 14, 31, .5), transparent 42%);
}

/* —— 通用区块节奏 —— */
.page-about .about-block {
  padding: 46px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-head {
  margin-bottom: 30px;
  max-width: 60ch;
}

.page-about .about-head .section__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 5.2vw, 34px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--mist);
}

.page-about .about-head .section__lead {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--silent);
}

/* —— 发展时间轴 —— */
.page-about .about-line {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 30px;
}

.page-about .about-line::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, rgba(47, 227, 210, .6), rgba(122, 107, 196, .42) 58%, transparent);
}

.page-about .about-line__item {
  position: relative;
  padding-left: 40px;
}

.page-about .about-line__item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 3px rgba(47, 227, 210, .1);
  z-index: 1;
  transition: box-shadow .22s var(--ease), background .22s var(--ease);
}

.page-about .about-line__item:hover::before {
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(47, 227, 210, .16);
}

.page-about .about-line__time {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-about .about-line__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-about .about-line__text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silent);
  max-width: 58ch;
}

/* —— 横向全宽图版 —— */
.page-about .about-wide {
  margin: 38px 0 0;
  border: 1px solid var(--line);
  background: var(--night);
  overflow: hidden;
}

.page-about .about-wide img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 3;
  object-fit: cover;
  filter: saturate(.9);
}

.page-about .about-wide__cap {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--silent);
  border-top: 1px solid var(--line-soft);
}

/* —— 服务版图 · 错位卡片 —— */
.page-about .about-map {
  display: grid;
  gap: 16px;
}

.page-about .about-map__item {
  position: relative;
  padding: 22px 20px 20px 22px;
  border: 1px solid var(--line);
  background: linear-gradient(158deg, rgba(16, 24, 50, .92), rgba(10, 14, 31, .72));
  display: grid;
  gap: 10px;
  align-content: start;
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.page-about .about-map__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--violet);
  opacity: .5;
  transition: background .22s var(--ease), opacity .22s var(--ease);
}

.page-about .about-map__item:hover {
  border-color: var(--line-cyan);
  transform: translateY(-4px);
}

.page-about .about-map__item:hover::before {
  background: var(--cyan);
  opacity: 1;
}

.page-about .about-map__item--b::before {
  background: var(--cyan);
}

.page-about .about-map__item--c::before {
  background: var(--gold);
}

.page-about .about-map__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-about .about-map__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silent);
}

.page-about .about-map__more {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed rgba(47, 227, 210, .38);
  justify-self: start;
  padding-bottom: 2px;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-about .about-map__more:hover {
  color: var(--gold);
  border-color: var(--gold);
}

/* —— 团队与客服 —— */
.page-about .about-team {
  display: grid;
  gap: 28px;
}

.page-about .about-team__text {
  min-width: 0;
}

.page-about .about-team .section__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 5.2vw, 34px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--mist);
}

.page-about .about-team__lead {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 52ch;
}

.page-about .about-team__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-team__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-team__k {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-about .about-team__v {
  font-size: 14px;
  line-height: 1.65;
  color: var(--silent);
}

.page-about .about-team__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--night);
  min-width: 0;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-team__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(200deg, rgba(14, 79, 83, .34), transparent 52%, rgba(10, 14, 31, .5));
}

/* —— 会员体系 —— */
.page-about .about-tiers {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-tiers__row {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
  transition: background .22s var(--ease);
}

.page-about .about-tiers__row:hover {
  background: rgba(16, 24, 50, .55);
}

.page-about .about-tiers__code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--violet-glow);
}

.page-about .about-tiers__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-about .about-tiers__text {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silent);
  max-width: 58ch;
}

.page-about .about-tiers__side {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--silent);
}

.page-about .about-tiers__row--top .about-tiers__code {
  color: var(--gold);
}

.page-about .about-tiers__row--top .about-tiers__name {
  color: var(--gold-light);
}

/* —— 合作生态 —— */
.page-about .about-eco {
  display: grid;
  gap: 28px;
}

.page-about .about-eco__lead {
  padding: 22px 20px;
  border: 1px solid var(--line);
  background:
    linear-gradient(150deg, rgba(14, 79, 83, .55), rgba(16, 24, 50, .85) 62%, rgba(10, 14, 31, .9));
}

.page-about .about-eco__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(40px, 11vw, 64px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--cyan);
  text-shadow: 0 0 30px rgba(47, 227, 210, .26);
}

.page-about .about-eco__num span {
  font-size: .36em;
  margin-left: 6px;
  color: var(--gold);
  text-shadow: none;
}

.page-about .about-eco__cap {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 40ch;
}

.page-about .about-eco__cols {
  display: grid;
  gap: 24px;
}

.page-about .about-eco__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--mist);
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line);
}

.page-about .about-wall {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-mark {
  margin-top: 32px;
  padding: 20px 20px 20px 22px;
  border-left: 3px solid var(--gold);
  background: rgba(16, 24, 50, .6);
}

.page-about .about-mark__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 70ch;
}

/* —— 下一步 —— */
.page-about .about-next {
  border-top: 1px solid var(--line);
  background: linear-gradient(160deg, var(--night), var(--ink) 70%);
  padding: 40px 0 56px;
}

.page-about .about-next__inner {
  display: grid;
  gap: 24px;
}

.page-about .about-next__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--mist);
  max-width: 22ch;
}

.page-about .about-next__text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silent);
  max-width: 54ch;
}

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

/* ===== 平板及以上 ===== */
@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-team__row {
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }

  .page-about .about-eco__cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 32px;
  }
}

/* ===== 桌面端 ===== */
@media (min-width: 1000px) {
  .page-about .about-hero {
    padding: 40px 0 76px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    padding-top: 0;
    border-top: 0;
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 2px;
  }

  .page-about .about-index__link {
    border-bottom: 0;
    border-left: 2px solid transparent;
    padding: 9px 0 9px 12px;
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link.is-current {
    border-left-color: var(--cyan);
  }

  .page-about .about-hero__main {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-block {
    padding: 72px 0;
  }

  .page-about .about-head {
    margin-bottom: 40px;
  }

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

  .page-about .about-line__item {
    padding-left: 46px;
  }

  .page-about .about-line__item::before {
    left: 6px;
    top: 8px;
  }

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

  /* 服务版图 · 不等宽错位 */
  .page-about .about-map {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-map__item:nth-child(1) {
    grid-column: 1 / span 5;
  }

  .page-about .about-map__item:nth-child(2) {
    grid-column: 6 / span 4;
    margin-top: 48px;
  }

  .page-about .about-map__item:nth-child(3) {
    grid-column: 10 / span 3;
    margin-top: 96px;
  }

  /* 团队 · 7:5 非对称 */
  .page-about .about-team {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-team__figure {
    margin-top: 40px;
  }

  /* 会员体系 · 三列 */
  .page-about .about-tiers__row {
    grid-template-columns: 72px minmax(0, 1fr) 160px;
    align-items: baseline;
    gap: 26px;
    padding: 24px 0;
  }

  .page-about .about-tiers__side {
    text-align: right;
  }

  /* 合作生态 */
  .page-about .about-eco {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-mark {
    margin-top: 44px;
  }

  .page-about .about-next {
    padding: 56px 0 76px;
  }
}

@media (min-width: 1240px) {
  .page-about .about-hero__main {
    gap: 60px;
  }
}

/* ===== 动效降级 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-map__item,
  .page-about .about-map__more,
  .page-about .about-index__link,
  .page-about .about-line__item::before,
  .page-about .about-tiers__row {
    transition: none;
  }

  .page-about .about-map__item:hover {
    transform: none;
  }
}