/* ================= 品牌故事页 · page-about ================= */

.page-about {
  --about-mark: rgba(233, 197, 127, .34);
  --about-grid-line: rgba(53, 242, 218, .055);
  position: relative;
  color: var(--mist);
  background: var(--deep);
}

.page-about .crumb {
  padding-top: clamp(16px, 2.6vw, 28px);
}

.page-about .about-hero__lede,
.page-about .about-next__meta {
  max-width: 62ch;
}

/* ---------- 开篇 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(28px, 5vw, 64px) 0 clamp(52px, 8vw, 104px);
  overflow: hidden;
  background:
    radial-gradient(92% 72% at 84% 2%, rgba(53, 242, 218, .17), transparent 62%),
    radial-gradient(82% 62% at 2% 100%, rgba(255, 107, 61, .15), transparent 66%),
    linear-gradient(165deg, var(--panel) 0%, var(--deep) 52%, var(--void) 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--about-grid-line) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: radial-gradient(118% 88% at 76% 10%, #000 0%, transparent 72%);
  mask-image: radial-gradient(118% 88% at 76% 10%, #000 0%, transparent 72%);
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  align-items: center;
}

.page-about .kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--sand);
  margin: 0 0 clamp(14px, 2vw, 22px);
}

.page-about .about-hero__title {
  font-weight: 200;
  font-size: clamp(40px, 6.4vw, 88px);
  line-height: .98;
  letter-spacing: -.02em;
  margin: 0 0 clamp(18px, 2.6vw, 30px);
  color: var(--mist);
}

.page-about .about-hero__lede {
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.8;
  color: var(--steel);
  margin: 0 0 clamp(20px, 3vw, 34px);
}

.page-about .about-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  clip-path: polygon(0 5%, 100% 0, 100% 100%, 0 95%);
  background: linear-gradient(150deg, var(--tide) 0%, var(--panel) 55%, var(--void) 100%);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  opacity: .88;
}

.page-about .about-hero__tag {
  position: absolute;
  top: clamp(18px, 3vw, 34px);
  left: clamp(16px, 3vw, 32px);
  z-index: 1;
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  background: rgba(3, 11, 20, .68);
  border: 1px solid var(--cyan-34);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .12em;
}

/* ---------- 起点 ---------- */
.page-about .about-origin {
  background: linear-gradient(180deg, var(--deep) 0%, var(--deep) 100%);
}

.page-about .about-origin__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-about .about-origin__lead {
  max-width: 68ch;
}

.page-about .about-origin__lead strong {
  color: var(--cyan);
  font-weight: 500;
}

.page-about .about-origin__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.page-about .about-origin__facts .data-row {
  padding: 14px 0;
}

/* ---------- 内容生产 ---------- */
.page-about .about-flow {
  background:
    linear-gradient(180deg, rgba(12, 33, 56, .92) 0%, rgba(6, 22, 39, .96) 100%);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-flow__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-about .about-flow__text {
  max-width: 66ch;
}

.page-about .about-flow__media {
  width: 100%;
}

.page-about .about-flow__stats {
  list-style: none;
  margin: clamp(32px, 5vw, 60px) 0 0;
  padding: clamp(22px, 3vw, 32px) 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 56px);
}

.page-about .about-flow__stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 120px;
}

.page-about .about-flow__stats .num {
  font-family: var(--font-num);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--coral);
  font-variant-numeric: tabular-nums;
}

.page-about .about-flow__stats li:nth-child(2) .num {
  color: var(--cyan);
}

.page-about .about-flow__stats li:nth-child(3) .num {
  color: var(--sand);
}

.page-about .about-flow__stats li:nth-child(4) .num {
  color: var(--mist);
}

.page-about .about-flow__stats li > span:last-child {
  font-size: 13px;
  color: var(--steel);
  letter-spacing: .04em;
}

/* ---------- 年份轴 ---------- */
.page-about .about-tl {
  background: linear-gradient(180deg, var(--void) 0%, var(--deep) 100%);
}

.page-about .about-tl__grid {
  display: grid;
  gap: clamp(32px, 5vw, 56px);
  align-items: start;
}

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

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 4px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg,
      var(--cyan) 0%,
      rgba(53, 242, 218, .42) 28%,
      rgba(233, 197, 127, .55) 66%,
      rgba(233, 197, 127, 0) 100%);
}

.page-about .tl__item {
  position: relative;
  display: grid;
  gap: 12px;
  padding-bottom: clamp(26px, 4.4vw, 54px);
}

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

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 12px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--sand);
  box-shadow: 0 0 0 5px rgba(233, 197, 127, .13);
}

.page-about .tl__mark {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.page-about .tl__year {
  font-family: var(--font-num);
  font-size: clamp(38px, 6vw, 62px);
  font-weight: 700;
  line-height: .95;
  letter-spacing: -.02em;
  color: var(--mist);
  font-variant-numeric: tabular-nums;
}

.page-about .tl__title {
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 500;
  letter-spacing: -.01em;
  margin: 0 0 8px;
  color: var(--mist);
}

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

.page-about .about-tl__figure {
  width: 100%;
}

/* ---------- 版本视角切换 ---------- */
.page-about .about-ver {
  position: relative;
  margin-top: clamp(36px, 6vw, 72px);
  padding: clamp(22px, 3.4vw, 40px);
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, rgba(14, 58, 92, .62) 0%, rgba(12, 33, 56, .72) 100%);
  border: 1px solid var(--line-soft);
}

.page-about .vr__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  margin: 0;
  pointer-events: none;
}

.page-about .vr__switch {
  display: inline-flex;
  gap: 6px;
  padding: 5px;
  border-radius: var(--r-pill);
  background: rgba(3, 11, 20, .6);
  border: 1px solid var(--line);
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .vr__tab {
  cursor: pointer;
  padding: 9px 20px;
  border-radius: var(--r-pill);
  font-size: 14px;
  color: var(--steel);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
  user-select: none;
}

.page-about #about-ver-func:checked ~ .vr__switch .vr__tab[for="about-ver-func"],
.page-about #about-ver-cont:checked ~ .vr__switch .vr__tab[for="about-ver-cont"] {
  background: var(--cyan);
  color: var(--void);
  font-weight: 500;
}

.page-about #about-ver-func:focus-visible ~ .vr__switch .vr__tab[for="about-ver-func"],
.page-about #about-ver-cont:focus-visible ~ .vr__switch .vr__tab[for="about-ver-cont"] {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

.page-about .vr__panel {
  display: none;
}

.page-about #about-ver-func:checked ~ .vr__panels .vr__panel--func,
.page-about #about-ver-cont:checked ~ .vr__panels .vr__panel--cont {
  display: block;
}

.page-about .ver-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-about .ver-list__item {
  display: grid;
  gap: 6px;
  padding-left: 18px;
  border-left: 2px solid var(--cyan-34);
}

.page-about .ver-list__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-about .ver-list__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--steel);
  max-width: 62ch;
}

/* ---------- 团队与服务规模 ---------- */
.page-about .about-team {
  background: linear-gradient(180deg, var(--deep) 0%, var(--panel) 100%);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(30px, 4.5vw, 60px);
  align-items: start;
}

.page-about .about-team__chart {
  margin: 0;
  justify-self: start;
  width: min(300px, 78vw);
}

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

.page-about .about-team__cap {
  margin: 12px 0 0;
  text-align: center;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--steel);
}

.page-about .about-team__legend {
  list-style: none;
  margin: 0 0 clamp(26px, 4vw, 40px);
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .legend-item {
  display: grid;
  grid-template-columns: 14px 1fr auto;
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .legend-item__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  align-self: center;
}

.page-about .legend-item__dot--cyan {
  background: var(--cyan);
}

.page-about .legend-item__dot--coral {
  background: var(--coral);
}

.page-about .legend-item__dot--sand {
  background: var(--sand);
}

.page-about .legend-item__name {
  font-size: 15px;
  color: var(--mist);
}

.page-about .legend-item__val {
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  color: var(--mist);
  font-variant-numeric: tabular-nums;
}

.page-about .legend-item__desc {
  grid-column: 2 / -1;
  font-size: 13px;
  color: var(--steel);
  line-height: 1.6;
}

.page-about .about-team__scale {
  list-style: none;
  margin: 0 0 clamp(20px, 3vw, 28px);
  padding: 0;
}

.page-about .about-team__scale .data-row {
  padding: 12px 0;
}

.page-about .about-team__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--steel);
  max-width: 56ch;
}

/* ---------- 合作与认可 ---------- */
.page-about .about-honor {
  background: linear-gradient(180deg, var(--panel) 0%, var(--void) 100%);
}

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

.page-about .about-honor__counts {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .honor-card {
  padding: clamp(20px, 2.6vw, 28px);
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, rgba(53, 242, 218, .09) 0%, rgba(12, 33, 56, .82) 68%);
  display: grid;
  gap: 6px;
}

.page-about .honor-card__num {
  font-family: var(--font-num);
  font-size: clamp(38px, 4.6vw, 56px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .honor-card__name {
  font-size: 16px;
  color: var(--mist);
  letter-spacing: .02em;
}

.page-about .honor-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel);
}

.page-about .about-honor__badges {
  display: grid;
  gap: 0;
  align-content: start;
}

.page-about .badge-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 16px 0 10px;
}

.page-about .badge-row__name {
  font-size: 16px;
  color: var(--mist);
}

.page-about .badge-row__name::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 2px;
  margin-right: 12px;
  vertical-align: middle;
  background: linear-gradient(90deg, var(--sand), rgba(233, 197, 127, 0));
  border-radius: 2px;
}

.page-about .about-honor__more {
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 14px;
}

.page-about .about-honor__more summary {
  cursor: pointer;
  list-style: none;
  font-size: 13px;
  color: var(--steel);
  padding: 4px 0;
  letter-spacing: .04em;
}

.page-about .about-honor__more summary::-webkit-details-marker {
  display: none;
}

.page-about .about-honor__more summary::after {
  content: "＋";
  margin-left: 8px;
  color: var(--cyan);
}

.page-about .about-honor__more[open] summary::after {
  content: "－";
}

.page-about .about-honor__more summary:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-about .about-honor__more p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
  max-width: 60ch;
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-next {
  background: linear-gradient(160deg, var(--void) 0%, var(--deep) 55%, var(--panel) 100%);
}

.page-about .about-next__panel {
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
  padding: clamp(28px, 4.4vw, 56px);
  border-radius: var(--r-xl);
  background:
    radial-gradient(90% 120% at 96% 0%, rgba(255, 107, 61, .18), transparent 58%),
    linear-gradient(140deg, rgba(14, 58, 92, .7) 0%, rgba(3, 11, 20, .85) 100%);
}

.page-about .about-next__title {
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 200;
  letter-spacing: -.02em;
  line-height: 1.1;
  margin: 10px 0 14px;
  color: var(--mist);
}

.page-about .about-next__text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--steel);
  max-width: 56ch;
}

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

.page-about .about-next__meta {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-next__meta a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-about .about-next__meta a:hover,
.page-about .about-next__meta a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-honor__counts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .ver-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(18px, 2.4vw, 30px);
  }
}

@media (min-width: 780px) {
  .page-about .tl {
    padding-left: 34px;
  }

  .page-about .tl__item {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: clamp(20px, 3vw, 44px);
    align-items: start;
  }

  .page-about .tl__item::before {
    left: -39px;
    top: 18px;
  }

  .page-about .tl__mark {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

@media (min-width: 940px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .86fr);
    gap: clamp(40px, 5vw, 84px);
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    gap: clamp(40px, 5vw, 80px);
  }

  .page-about .about-flow__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
    gap: clamp(36px, 4.4vw, 64px);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 76px);
  }

  .page-about .about-honor__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: clamp(40px, 5vw, 72px);
  }

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

  .page-about .about-next__actions {
    justify-content: flex-end;
    max-width: 320px;
  }
}

@media (min-width: 1040px) {
  .page-about .about-tl__grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
    gap: clamp(36px, 4.6vw, 64px);
  }

  .page-about .about-tl__figure {
    position: sticky;
    top: 108px;
  }
}

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