/* ===== 品牌故事 · 页面专属样式 ===== */
.page-about {
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  position: relative;
  z-index: 5;
  padding-top: calc(var(--header-h) + 8px);
  color: var(--c-muted);
  font-size: 13px;
}

.page-about .breadcrumbs a {
  color: var(--c-muted);
  text-decoration: none;
  transition: color .2s ease;
}

.page-about .breadcrumbs a:hover {
  color: var(--c-neon);
}

.page-about .breadcrumbs__sep {
  margin: 0 10px;
  opacity: .55;
}

/* ---------- ヘロ区 ---------- */
.page-about .about-hero {
  position: relative;
  margin-top: calc(var(--header-h) * -1);
  padding: 0 0 88px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 82% 14%, rgba(138, 43, 226, .5) 0%, transparent 52%),
    linear-gradient(150deg, #1E2D3D 0%, #0B1628 52%, #121C28 100%);
}

.page-about .about-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, .03) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, .03) 0 1px, transparent 1px 46px);
}

.page-about .about-hero::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 54px;
  background: var(--c-deep);
  transform: skewY(-2deg);
  transform-origin: left bottom;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding-top: 8px;
}

.page-about .about-hero__label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-style: italic;
  text-transform: uppercase;
  font-size: clamp(40px, 8vw, 92px);
  line-height: .94;
  color: var(--c-white);
  margin: 18px 0 22px;
  text-shadow: 0 4px 40px rgba(0, 0, 0, .35);
}

.page-about .about-hero__title span {
  display: block;
  margin-top: 14px;
  font-size: .44em;
  letter-spacing: .03em;
  color: var(--c-neon);
}

.page-about .about-hero__lede {
  max-width: 640px;
  color: var(--c-muted);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  margin-bottom: 28px;
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  margin-bottom: 34px;
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, .14);
  border-bottom: 1px solid rgba(255, 255, 255, .14);
}

.page-about .about-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 3px;
  color: var(--c-muted);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.page-about .about-hero__fact strong {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 34px;
  line-height: 1;
  color: var(--c-neon);
}

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

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

/* ---------- 01 品牌初衷 ---------- */
.page-about .about-mission {
  background: var(--c-deep);
}

.page-about .about-mission__head {
  margin-bottom: 12px;
}

.page-about .about-mission__head h2,
.page-about .about-timeline__head h2,
.page-about .about-team__head h2,
.page-about .about-compliance__head h2 {
  font-family: var(--font-display);
  font-style: italic;
  text-transform: uppercase;
  font-size: clamp(32px, 5vw, 60px);
  line-height: .96;
  color: var(--c-white);
  margin: 10px 0 16px;
}

.page-about .about-mission__intro,
.page-about .about-timeline__intro {
  color: var(--c-muted);
  font-size: 16px;
  line-height: 1.75;
  max-width: 640px;
  margin: 0;
}

.page-about .about-mission__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 34px;
}

.page-about .about-mission__copy p,
.page-about .about-team__copy p {
  color: var(--c-muted);
  line-height: 1.85;
  font-size: 16px;
  margin-bottom: 16px;
}

.page-about .about-mission__copy a {
  color: var(--c-neon);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 255, 20, .4);
}

.page-about .about-mission__points {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-mission__points li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--c-card);
  color: var(--c-white);
  border-left: 3px solid var(--c-neon);
}

.page-about .about-mission__media,
.page-about .about-team__media,
.page-about .about-compliance__media {
  margin: 0;
}

.page-about .about-mission__media img,
.page-about .about-team__media img,
.page-about .about-compliance__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 02 发展历程 ---------- */
.page-about .about-timeline {
  background: var(--c-footer);
  position: relative;
}

.page-about .about-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--c-neon), var(--c-purple), var(--c-orange), transparent);
}

.page-about .about-timeline__rail {
  position: relative;
  margin-top: 46px;
  padding-left: 20px;
}

.page-about .about-timeline__rail::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-neon) 0%, var(--c-purple) 55%, var(--c-orange) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  margin-bottom: 52px;
  padding-left: 28px;
}

.page-about .about-timeline__item::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 14px;
  width: 14px;
  height: 14px;
  background: var(--c-deep);
  border: 2px solid var(--c-neon);
}

.page-about .about-timeline__item--v2::before {
  border-color: var(--c-orange);
}

.page-about .about-timeline__item--v3::before {
  border-color: var(--c-purple);
}

.page-about .about-timeline__version {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(68px, 14vw, 112px);
  line-height: .82;
  letter-spacing: .02em;
  color: transparent;
  -webkit-text-stroke: 2px var(--c-neon);
  text-shadow: 0 0 34px rgba(57, 255, 20, .25);
  user-select: none;
}

.page-about .about-timeline__item--v2 .about-timeline__version {
  -webkit-text-stroke-color: var(--c-orange);
  text-shadow: 0 0 34px rgba(255, 106, 0, .28);
}

.page-about .about-timeline__item--v3 .about-timeline__version {
  -webkit-text-stroke-color: var(--c-purple);
  text-shadow: 0 0 34px rgba(138, 43, 226, .4);
}

.page-about .about-timeline__card {
  background: var(--c-card);
  border-left: 3px solid var(--c-neon);
  padding: 24px 22px;
  transition: transform .28s var(--ease-cubic), box-shadow .28s var(--ease-cubic);
}

.page-about .about-timeline__card:hover,
.page-about .about-timeline__card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, .4);
}

.page-about .about-timeline__card h3 {
  font-family: var(--font-display);
  font-style: italic;
  text-transform: uppercase;
  font-size: clamp(22px, 4vw, 34px);
  color: var(--c-white);
  margin: 0 0 8px;
}

.page-about .about-timeline__period {
  color: var(--c-neon);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.page-about .about-timeline__item--v2 .about-timeline__period {
  color: var(--c-orange);
}

.page-about .about-timeline__item--v3 .about-timeline__period {
  color: var(--c-neon);
}

.page-about .about-timeline__card > p {
  color: var(--c-muted);
  line-height: 1.75;
  font-size: 14px;
  margin-bottom: 14px;
}

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

.page-about .about-timeline__features li {
  padding: 6px 11px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .1);
  font-size: 12px;
  color: var(--c-white);
  letter-spacing: .03em;
}

/* ---------- 03 团队与文化 ---------- */
.page-about .about-team {
  background: var(--c-deep);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 36px;
}

.page-about .about-team__culture {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-team__value {
  background: var(--c-card);
  border-top: 3px solid var(--c-neon);
  padding: 18px 16px;
}

.page-about .about-team__value:nth-child(2) {
  border-top-color: var(--c-orange);
}

.page-about .about-team__value:nth-child(3) {
  border-top-color: var(--c-purple);
}

.page-about .about-team__value-num {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 34px;
  line-height: 1;
  color: var(--c-neon);
  margin-bottom: 8px;
}

.page-about .about-team__value:nth-child(2) .about-team__value-num {
  color: var(--c-orange);
}

.page-about .about-team__value:nth-child(3) .about-team__value-num {
  color: var(--c-purple);
}

.page-about .about-team__value p {
  font-size: 13px;
  line-height: 1.55;
  margin: 0;
  color: var(--c-muted);
}

/* ---------- 04 资质与合规 ---------- */
.page-about .about-compliance {
  position: relative;
  background:
    linear-gradient(120deg, rgba(138, 43, 226, .14) 0%, transparent 55%),
    var(--c-footer);
}

.page-about .about-compliance::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--c-orange), var(--c-purple), transparent);
}

.page-about .about-compliance__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 36px;
}

.page-about .about-compliance__media {
  order: 2;
}

.page-about .about-compliance__text p {
  color: var(--c-muted);
  line-height: 1.85;
  font-size: 16px;
  margin-bottom: 16px;
}

.page-about .about-compliance__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-compliance__list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, .05);
  border-left: 3px solid var(--c-orange);
  color: var(--c-white);
}

/* ---------- CTA ---------- */
.page-about .about-cta {
  position: relative;
  padding: 76px 0 96px;
  background: var(--c-deep);
}

.page-about .about-cta::before {
  content: '';
  display: block;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--c-orange), var(--c-purple), transparent);
}

.page-about .about-cta__inner {
  text-align: center;
  padding: 8px 8px 0;
}

.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-style: italic;
  text-transform: uppercase;
  font-size: clamp(34px, 6vw, 68px);
  line-height: 1;
  color: var(--c-white);
  margin-bottom: 14px;
}

.page-about .about-cta p {
  color: var(--c-muted);
  font-size: 16px;
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto 30px;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* ---------- 桌面端响应式 ---------- */
@media (min-width: 768px) {
  .page-about .about-mission__grid {
    align-items: center;
  }

  .page-about .about-team__grid {
    align-items: center;
  }

  .page-about .about-team__culture {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .page-about .about-timeline__rail {
    padding-left: 0;
  }

  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 28px;
    padding-left: 0;
    align-items: start;
  }

  .page-about .about-timeline__rail::before {
    left: 59px;
  }

  .page-about .about-timeline__item::before {
    left: 52px;
  }

  .page-about .about-timeline__version {
    font-size: clamp(72px, 10vw, 100px);
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1.15fr .85fr;
    align-items: center;
    gap: 40px;
  }

  .page-about .about-hero__art {
    display: block;
    position: relative;
    min-height: 460px;
  }

  .page-about .about-hero__art-ring {
    position: absolute;
    top: 44px;
    right: -32px;
    width: 330px;
    height: 330px;
    border: 2px solid rgba(57, 255, 20, .38);
    transform: rotate(16deg);
  }

  .page-about .about-hero__art-bar {
    position: absolute;
    display: block;
    height: 8px;
    transform: rotate(-21deg);
    transform-origin: left center;
  }

  .page-about .about-hero__art-bar--1 {
    top: 116px;
    right: 26px;
    width: 210px;
    background: var(--c-neon);
    box-shadow: 0 0 24px rgba(57, 255, 20, .6);
  }

  .page-about .about-hero__art-bar--2 {
    top: 158px;
    right: -20px;
    width: 270px;
    background: var(--c-orange);
  }

  .page-about .about-hero__art-bar--3 {
    top: 198px;
    right: 32px;
    width: 150px;
    background: var(--c-purple);
    box-shadow: 0 0 28px rgba(138, 43, 226, .55);
  }

  .page-about .about-hero__art-bar--4 {
    top: 238px;
    right: 66px;
    width: 92px;
    background: var(--c-white);
    opacity: .78;
  }

  .page-about .about-mission__grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 1fr 180px 1fr;
    gap: 36px;
    margin-bottom: 64px;
  }

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

  .page-about .about-timeline__item::before {
    left: calc(50% - 8px);
  }

  .page-about .about-timeline__version {
    grid-column: 2;
    grid-row: 1;
    align-self: start;
    justify-self: center;
  }

  .page-about .about-timeline__card {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .about-timeline__item:nth-child(even) .about-timeline__card {
    grid-column: 3;
  }

  .page-about .about-timeline__item:nth-child(even) .about-timeline__version {
    grid-column: 2;
  }

  .page-about .about-timeline__item--v2 .about-timeline__card {
    border-left-color: var(--c-orange);
  }

  .page-about .about-timeline__item--v3 .about-timeline__card {
    border-left-color: var(--c-purple);
  }

  .page-about .about-team__grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }

  .page-about .about-compliance__grid {
    grid-template-columns: .92fr 1.08fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-compliance__media {
    order: 0;
  }
}

@media (min-width: 1280px) {
  .page-about .about-hero {
    padding-bottom: 104px;
  }
}

/* ---------- 动画增强 ---------- */
@keyframes about-pulse-glow {
  0%, 100% { opacity: 1; }
  50% { opacity: .55; }
}

.page-about .about-hero__art-bar--1,
.page-about .about-hero__art-bar--3 {
  animation: about-pulse-glow 2.6s ease-in-out infinite;
}

.page-about .about-hero__art-bar--2,
.page-about .about-hero__art-bar--4 {
  animation: about-pulse-glow 3.4s ease-in-out infinite reverse;
}