/* ===== 杏运娱乐品牌档案 · 页面专属样式 ===== */
.page-about {
  --about-rail-w: 232px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  min-width: 0;
  background:
    linear-gradient(rgba(230, 232, 240, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(230, 232, 240, 0.025) 1px, transparent 1px),
    radial-gradient(120% 85% at 88% 8%, rgba(43, 29, 74, 0.8), transparent 55%),
    radial-gradient(110% 70% at 5% 100%, rgba(43, 29, 74, 0.6), transparent 55%),
    var(--color-night);
  background-size: 36px 36px, 36px 36px, 100% 100%, 100% 100%, 100% 100%;
  color: var(--color-silver);
  font-family: var(--font-body);
  line-height: 1.75;
}

/* 侧边档案索引 */
.page-about .about-archive {
  position: sticky;
  top: var(--header-h);
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  padding: 0.7rem 1rem;
  background: rgba(11, 14, 26, 0.9);
  border-bottom: 1px solid var(--color-line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

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

.page-about .about-archive__nav {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  width: 100%;
}

.page-about .about-archive__nav::-webkit-scrollbar {
  display: none;
}

.page-about .about-archive__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-steel);
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition:
    color 0.3s var(--ease),
    border-color 0.3s var(--ease),
    background-color 0.3s var(--ease);
}

.page-about .about-archive__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-steel);
  transition: color 0.3s var(--ease);
}

.page-about .about-archive__link:hover,
.page-about .about-archive__link.is-visible,
.page-about .about-archive__link.is-active {
  color: var(--color-gold);
  border-color: var(--color-line-strong);
  background: rgba(245, 192, 68, 0.08);
}

.page-about .about-archive__link:hover .about-archive__num,
.page-about .about-archive__link.is-visible .about-archive__num,
.page-about .about-archive__link.is-active .about-archive__num {
  color: var(--color-gold);
}

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

/* 右侧内容区 */
.page-about .about-content {
  min-width: 0;
  padding: 0 1.1rem 2.5rem;
}

/* 品牌主视觉 */
.page-about .about-hero {
  position: relative;
  display: flex;
  flex-direction: column;
  margin: 1.25rem 0 2rem;
}

.page-about .about-hero__media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: 2px;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: clamp(240px, 50vw, 440px);
  object-fit: cover;
  filter: saturate(1.06) contrast(1.02);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
  padding: 1.3rem 0.35rem 0;
}

.page-about .about-hero__crumbs {
  display: block;
  margin-bottom: 0.85rem;
}

.page-about .about-hero__crumbs a {
  color: var(--color-steel);
  text-decoration: none;
  transition: color 0.3s var(--ease);
}

.page-about .about-hero__crumbs a:hover {
  color: var(--color-gold);
}

.page-about .about-hero__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.7rem, 5.6vw, 3.5rem);
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--color-silver);
  margin: 0 0 1rem;
}

.page-about .about-hero__title-line {
  display: block;
}

.page-about .about-hero__title-line:first-child::after {
  content: "";
  display: block;
  width: 3rem;
  height: 2px;
  background: var(--color-gold);
  margin: 0.55rem 0 0;
}

.page-about .about-hero__title-line:last-child {
  margin-top: 0.8rem;
  color: var(--color-gold);
}

.page-about .about-hero__lead {
  max-width: 760px;
  font-size: 0.97rem;
  color: var(--color-steel);
  margin: 0;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 1.1rem 0 0;
  border-top: 1px solid var(--color-line);
}

.page-about .about-hero__facts li {
  padding-right: 0.5rem;
}

.page-about .about-hero__facts strong {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3.8vw, 2.2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-gold);
  letter-spacing: 0.02em;
}

.page-about .about-hero__facts span {
  display: block;
  font-size: 0.72rem;
  line-height: 1.55;
  color: var(--color-steel);
  margin-top: 0.2rem;
}

/* 通用章节 */
.page-about .about-section {
  padding: 2.6rem 0 2rem;
  border-top: 1px solid var(--color-line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-about .about-section__head {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.6rem;
}

.page-about .about-section__head h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.45rem, 3.8vw, 2.5rem);
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--color-silver);
  margin: 0.5rem 0 0.9rem;
}

.page-about .about-section__line {
  display: block;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--color-line-strong), transparent 80%);
}

/* 品牌缘起 */
.page-about .about-origin__grid {
  display: grid;
  gap: 1.6rem;
}

.page-about .about-origin__text {
  font-size: 0.95rem;
  color: var(--color-silver);
}

.page-about .about-origin__text p + p {
  margin-top: 0.9rem;
}

.page-about .about-origin__aside {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-about .about-origin__stats {
  display: grid;
  gap: 0.8rem;
  margin: 0;
  padding: 1.25rem 1.3rem;
  background: linear-gradient(145deg, var(--color-moon), rgba(24, 30, 46, 0.55));
  border-left: 2px solid var(--color-gold);
}

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

.page-about .about-origin__stat dt {
  font-size: 0.82rem;
  color: var(--color-steel);
}

.page-about .about-origin__stat dd {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-gold);
  margin: 0;
  white-space: nowrap;
}

.page-about .about-origin__note {
  background: rgba(245, 192, 68, 0.05);
  border-left: 2px solid var(--color-gold);
  padding: 0.9rem 1rem;
}

/* 服务版图 */
.page-about .about-services__figure {
  margin: 0 0 1.8rem;
}

.page-about .about-services__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
  border: 1px solid var(--color-line);
}

.page-about .about-services__figure figcaption {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--color-steel);
  padding-top: 0.5rem;
  text-align: right;
}

.page-about .about-services__grid {
  display: grid;
  gap: 1rem;
}

.page-about .about-service-card {
  perspective: 900px;
  position: relative;
  border-radius: 2px;
}

.page-about .about-service-card__inner {
  position: relative;
  min-height: 235px;
  padding: 1.5rem 1.35rem 1.35rem;
  background: linear-gradient(160deg, rgba(28, 34, 48, 0.92), rgba(20, 25, 38, 0.96));
  border: 1px solid var(--color-line);
  border-radius: 2px;
  transition: transform 0.65s var(--ease), border-color 0.35s var(--ease), background-color 0.35s var(--ease);
  transform-style: preserve-3d;
}

.page-about .about-service-card:hover .about-service-card__inner,
.page-about .about-service-card:focus-within .about-service-card__inner {
  transform: rotateY(180deg);
}

.page-about .about-service-card__front,
.page-about .about-service-card__back {
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.page-about .about-service-card__back {
  position: absolute;
  inset: 0;
  padding: 1.5rem 1.35rem 1.35rem;
  transform: rotateY(180deg);
  background: linear-gradient(160deg, rgba(43, 29, 74, 0.55), rgba(28, 34, 48, 0.92));
  border: 1px solid var(--color-line-strong);
  border-radius: 2px;
}

.page-about .about-service-card__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-green);
  letter-spacing: 0.08em;
}

.page-about .about-service-card h3 {
  font-family: var(--font-head);
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-silver);
  margin: 0.4rem 0 0.55rem;
}

.page-about .about-service-card p {
  font-size: 0.87rem;
  line-height: 1.75;
  color: var(--color-steel);
  margin: 0;
}

.page-about .about-service-card__back-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  border-bottom: 1px solid var(--color-line-strong);
  padding-bottom: 0.3rem;
  margin-bottom: 0.7rem;
}

/* 体系与保障 */
.page-about .about-assurance {
  position: relative;
  padding-left: 0.9rem;
  padding-right: 0.9rem;
  background:
    linear-gradient(175deg, rgba(43, 29, 74, 0.6) 0%, rgba(11, 14, 26, 0) 42%),
    rgba(28, 34, 48, 0.42);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.page-about .about-assurance::before {
  content: "";
  position: absolute;
  top: -1px;
  right: 0;
  width: 55%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold));
  transform: rotate(-1.2deg);
  transform-origin: right center;
}

.page-about .about-assurance__grid {
  display: grid;
  gap: 0.85rem;
  margin-top: 0.4rem;
}

.page-about .about-assurance__item {
  position: relative;
  padding: 1.3rem 1.1rem 1.1rem;
  background: linear-gradient(165deg, var(--color-moon), rgba(23, 28, 43, 0.9));
  border-left: 2px solid var(--color-green);
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}

.page-about .about-assurance__item::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 26px;
  height: 26px;
  background: linear-gradient(135deg, transparent 50%, rgba(245, 192, 68, 0.32) 50%);
  pointer-events: none;
}

.page-about .about-assurance__item:hover {
  border-left-color: var(--color-gold);
  background: linear-gradient(165deg, rgba(43, 29, 74, 0.65), rgba(23, 28, 43, 0.9));
}

.page-about .about-assurance__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--color-line-strong);
  border-radius: 2px;
  color: var(--color-gold);
  margin-bottom: 0.8rem;
}

.page-about .about-assurance__item h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-silver);
  margin: 0 0 0.4rem;
}

.page-about .about-assurance__item p {
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--color-steel);
  margin: 0;
}

.page-about .about-assurance__note {
  margin-top: 1.2rem;
  background: rgba(245, 192, 68, 0.05);
  border-left: 2px solid var(--color-gold);
  padding: 0.85rem 1rem;
}

/* 里程碑 */
.page-about .about-milestones__layout {
  display: grid;
  gap: 1.8rem;
}

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

.page-about .about-milestone-list::before {
  content: "";
  position: absolute;
  top: 0.3rem;
  bottom: 0.3rem;
  left: 0.45rem;
  width: 1px;
  background: linear-gradient(180deg, var(--color-gold), rgba(245, 192, 68, 0.15) 60%, transparent 100%);
}

.page-about .about-milestone-list__item {
  position: relative;
  padding: 0 0 1.75rem 1.85rem;
}

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

.page-about .about-milestone-list__marker {
  position: absolute;
  top: 0.45rem;
  left: 0.12rem;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow:
    0 0 0 3px var(--color-night),
    0 0 12px rgba(245, 192, 68, 0.55);
}

.page-about .about-milestone-list__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-green);
  margin-bottom: 0.35rem;
}

.page-about .about-milestone-list__body {
  background: rgba(28, 34, 48, 0.66);
  border-left: 2px solid transparent;
  padding: 0.85rem 1rem;
  transition: border-color 0.35s var(--ease), background-color 0.35s var(--ease), transform 0.35s var(--ease);
}

.page-about .about-milestone-list__item:hover .about-milestone-list__body {
  border-left-color: var(--color-gold);
  background: rgba(43, 29, 74, 0.5);
  transform: translateX(2px);
}

.page-about .about-milestone-list__body h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-silver);
  margin: 0 0 0.3rem;
}

.page-about .about-milestone-list__body p {
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--color-steel);
  margin: 0;
}

.page-about .about-milestones__visual img {
  display: block;
  width: 100%;
  height: 280px;
  object-fit: cover;
  aspect-ratio: auto;
  border-radius: 2px;
  border: 1px solid var(--color-line);
}

.page-about .about-milestones__caption {
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--color-steel);
  margin: 0.5rem 0 0;
  text-align: right;
}

/* 延伸链接 */
.page-about .about-more {
  display: grid;
  gap: 0.75rem;
  margin: 2.8rem 0 0;
  padding: 1.6rem 0 0;
  border-top: 1px solid var(--color-line);
}

.page-about .about-more__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.05rem;
  background: rgba(28, 34, 48, 0.55);
  border: 1px solid var(--color-line);
  border-radius: 2px;
  text-decoration: none;
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .about-more__link:hover {
  border-color: var(--color-line-strong);
  background: rgba(43, 29, 74, 0.45);
  transform: translateX(3px);
}

.page-about .about-more__tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.4;
  color: var(--color-gold);
  border: 1px solid var(--color-line-strong);
  padding: 0.18rem 0.45rem;
  white-space: nowrap;
}

.page-about .about-more__text {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--color-silver);
}

.page-about .about-more__arrow {
  font-family: var(--font-mono);
  color: var(--color-steel);
  transition: transform 0.3s var(--ease), color 0.3s var(--ease);
}

.page-about .about-more__link:hover .about-more__arrow {
  transform: translateX(4px);
  color: var(--color-gold);
}

/* ===== 桌面端 ===== */
@media (min-width: 1024px) {
  .page-about {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 0;
  }

  .page-about .about-archive {
    top: var(--header-h);
    height: calc(100vh - var(--header-h));
    align-items: flex-start;
    flex-direction: column;
    justify-content: space-between;
    gap: 0;
    padding: 2.4rem 1.6rem 1.6rem;
    background:
      linear-gradient(180deg, rgba(43, 29, 74, 0.35), rgba(11, 14, 26, 0.4)),
      rgba(11, 14, 26, 0.72);
    border-right: 1px solid var(--color-line);
    border-bottom: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .page-about .about-archive__kicker {
    display: block;
    font-family: var(--font-head);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-gold);
  }

  .page-about .about-archive__nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0.1rem;
    overflow: visible;
    width: auto;
  }

  .page-about .about-archive__link {
    justify-content: flex-start;
    align-items: baseline;
    border: none;
    border-radius: 0;
    padding: 0.65rem 0.4rem;
    background: transparent;
    font-size: 0.95rem;
    position: relative;
  }

  .page-about .about-archive__link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    height: 1px;
    width: 0;
    background: var(--color-gold);
    transition: width 0.35s var(--ease);
  }

  .page-about .about-archive__link:hover,
  .page-about .about-archive__link.is-visible,
  .page-about .about-archive__link.is-active {
    color: var(--color-gold);
    background: transparent;
    border-color: transparent;
  }

  .page-about .about-archive__link:hover::after,
  .page-about .about-archive__link.is-visible::after,
  .page-about .about-archive__link.is-active::after {
    width: 100%;
  }

  .page-about .about-archive__foot {
    display: block;
    border-top: 1px solid var(--color-line);
    padding-top: 1.1rem;
    margin-top: 2rem;
  }

  .page-about .about-archive__note {
    font-size: 0.78rem;
    line-height: 1.7;
    color: var(--color-steel);
    margin: 0.65rem 0 0;
  }

  .page-about .about-content {
    margin: 0 auto;
    max-width: 1180px;
    padding: 0 3.5rem 3.5rem;
  }

  .page-about .about-hero {
    margin: 2.75rem 0 3.5rem;
  }

  .page-about .about-hero__media img {
    height: min(76vh, 660px);
  }

  .page-about .about-hero__inner {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 3rem;
    background: linear-gradient(180deg, rgba(11, 14, 26, 0), rgba(11, 14, 26, 0.74) 38%, rgba(11, 14, 26, 0.96) 100%);
  }

  .page-about .about-hero__title {
    max-width: 900px;
    font-size: clamp(2.2rem, 4.2vw, 3.8rem);
  }

  .page-about .about-hero__lead {
    max-width: 720px;
    font-size: 1.04rem;
  }

  .page-about .about-hero__facts {
    max-width: 720px;
    margin-top: 1.9rem;
    padding-top: 1.25rem;
    border-top-color: rgba(245, 192, 68, 0.22);
  }

  .page-about .about-section {
    padding: 4.5rem 0 3.2rem;
  }

  .page-about .about-section__head {
    margin-bottom: 2.4rem;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 3rem;
  }

  .page-about .about-origin__text {
    font-size: 1rem;
  }

  .page-about .about-services__figure img {
    max-height: 520px;
    object-fit: cover;
  }

  .page-about .about-services__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.4rem;
  }

  .page-about .about-assurance {
    padding-left: 2.4rem;
    padding-right: 2.4rem;
  }

  .page-about .about-assurance__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.1rem;
  }

  .page-about .about-assurance__item {
    padding: 1.5rem 1.3rem 1.25rem;
  }

  .page-about .about-milestones__layout {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-milestones__visual {
    position: sticky;
    top: calc(var(--header-h) + 1.8rem);
  }

  .page-about .about-milestones__visual img {
    height: auto;
    aspect-ratio: 2 / 3;
    max-height: 740px;
  }

  .page-about .about-more {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 4rem;
  }

  .page-about .about-more__link:last-child {
    grid-column: 1 / -1;
  }

  .page-about .about-more__link {
    padding: 1.1rem 1.3rem;
  }
}