.page-about {
  --about-glow: rgba(91, 42, 134, 0.36);
  --about-hair: rgba(201, 191, 217, 0.15);
  --about-hair-soft: rgba(201, 191, 217, 0.08);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: 26px 56px;
  background:
    radial-gradient(120% 100% at 84% -22%, var(--about-glow), transparent 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(201, 191, 217, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(201, 191, 217, 0.07) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 92%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 92%);
  pointer-events: none;
}

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

.page-about .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 40px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  font-family: var(--font-body);
  color: var(--lilac);
}

.page-about .crumbs li {
  display: flex;
  align-items: center;
}

.page-about .crumbs li + li::before {
  content: "/";
  margin-inline-end: 8px;
  color: rgba(201, 191, 217, 0.4);
}

.page-about .crumbs a {
  color: var(--lilac);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .crumbs a:hover,
.page-about .crumbs a:focus-visible {
  color: var(--gold);
  border-bottom-color: rgba(212, 162, 76, 0.5);
}

.page-about .crumbs [aria-current="page"] {
  color: var(--porcelain);
}

.page-about .about-hero__inner {
  display: grid;
  gap: 34px;
}

.page-about .about-hero__copy .eyebrow {
  color: var(--gold);
}

.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 6.6vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.012em;
  color: var(--porcelain);
}

.page-about .about-hero .lede {
  margin-top: 20px;
  color: var(--lilac);
}

.page-about .about-hero__actions {
  margin-top: 28px;
}

.page-about .about-hero__media {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  overflow: hidden;
  background: var(--plum);
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.8);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 通用区块 ---------- */

.page-about .about-block {
  padding-block: 60px;
  border-bottom: 1px solid var(--about-hair-soft);
}

.page-about .about-head {
  max-width: 62ch;
  margin-bottom: 38px;
}

.page-about .about-head h2,
.page-about .about-origin h2,
.page-about .about-team h2,
.page-about .about-next h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(24px, 4.4vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.008em;
  color: var(--porcelain);
  margin: 10px 0 0;
}

.page-about .about-head .lede {
  margin-top: 16px;
  color: var(--lilac);
}

.page-about .about-head .eyebrow,
.page-about .about-origin .eyebrow,
.page-about .about-team .eyebrow,
.page-about .about-next .eyebrow {
  color: var(--gold);
}

.page-about .media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--plum);
}

.page-about .media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .media-cap {
  padding: 12px 16px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--lilac);
  background: rgba(26, 15, 46, 0.6);
}

/* ---------- 品牌起源 ---------- */

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

.page-about .about-origin__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-origin__body p {
  margin: 0 0 18px;
  color: var(--text);
  font-size: 16px;
  line-height: 1.8;
}

.page-about .origin-figures {
  display: grid;
  gap: 14px;
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid var(--about-hair);
}

.page-about .origin-figure {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .origin-figure__num {
  font-size: 26px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -0.01em;
  min-width: 88px;
}

.page-about .origin-figure__label {
  font-size: 14px;
  line-height: 1.6;
  color: var(--lilac);
}

/* ---------- 内容方法 ---------- */

.page-about .about-method {
  position: relative;
  background:
    radial-gradient(90% 70% at 12% 0%, rgba(91, 42, 134, 0.28), transparent 66%),
    var(--ink-deep);
}

.page-about .method-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .method-step {
  position: relative;
  padding: 26px 24px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(6px);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .method-step:hover {
  border-color: rgba(212, 162, 76, 0.4);
  transform: translateY(-3px);
}

.page-about .method-tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: var(--pill);
  border: 1px solid rgba(212, 162, 76, 0.36);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .method-step h3 {
  margin: 16px 0 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.35;
  color: var(--porcelain);
}

.page-about .method-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--lilac);
}

.page-about .method-quote {
  margin: 38px 0 0;
  padding: 22px 24px;
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: linear-gradient(90deg, rgba(212, 162, 76, 0.1), transparent 80%);
}

.page-about .method-quote p {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.6;
  color: var(--porcelain);
}

/* ---------- 团队分工 ---------- */

.page-about .about-team {
  background: var(--ink);
}

.page-about .about-team__grid {
  display: grid;
  gap: 32px;
}

.page-about .about-team__copy > p {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-about .team-facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .team-fact {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .team-fact__num {
  font-size: 20px;
  font-weight: 700;
  color: var(--violet);
  letter-spacing: -0.01em;
}

.page-about .team-fact__txt {
  font-size: 14px;
  line-height: 1.75;
  color: var(--lilac);
}

.page-about .about-team__media {
  border-radius: var(--radius-lg);
}

/* ---------- 质量与校验 ---------- */

.page-about .about-quality {
  background:
    radial-gradient(80% 60% at 88% 8%, rgba(212, 162, 76, 0.1), transparent 62%),
    linear-gradient(180deg, var(--plum) 0%, #150B26 100%);
}

.page-about .about-quality__media {
  margin-bottom: 30px;
}

.page-about .quality-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  counter-reset: qf;
}

.page-about .quality-node {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  background: rgba(245, 241, 232, 0.04);
}

.page-about .quality-node__idx {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .quality-node__name {
  font-size: 15px;
  color: var(--porcelain);
  font-weight: 500;
}

.page-about .about-quality__note {
  margin: 28px 0 0;
  padding: 20px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--glass);
  font-size: 14px;
  line-height: 1.85;
  color: var(--lilac);
}

.page-about .about-quality__note a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 162, 76, 0.45);
}

.page-about .about-quality__note a:hover,
.page-about .about-quality__note a:focus-visible {
  color: var(--gold-soft);
}

/* ---------- 发展时间线 ---------- */

.page-about .about-timeline {
  background:
    radial-gradient(80% 60% at 8% 100%, rgba(91, 42, 134, 0.24), transparent 66%),
    var(--ink-deep);
}

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

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  border-radius: var(--pill);
  background: linear-gradient(180deg, var(--grape) 0%, var(--violet) 48%, var(--gold) 100%);
  opacity: 0.55;
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 38px 66px;
}

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

.page-about .tl-node {
  position: absolute;
  left: 0;
  top: 0;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: var(--pill);
  border: 1px solid var(--line-strong);
  background: linear-gradient(150deg, var(--grape) 0%, var(--grape-deep) 100%);
  color: var(--porcelain);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 0 0 6px rgba(14, 31, 26, 0.9);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .tl-item:hover .tl-node {
  border-color: rgba(212, 162, 76, 0.62);
  box-shadow: 0 0 0 6px rgba(14, 31, 26, 0.9), 0 0 22px -6px rgba(212, 162, 76, 0.6);
}

.page-about .tl-body h3 {
  margin: 4px 0 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.35;
  color: var(--porcelain);
}

.page-about .tl-body > p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--lilac);
}

.page-about .tl-more {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-about .tl-more li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--lilac);
}

.page-about .tl-more li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: var(--pill);
  background: var(--gold);
  opacity: 0.7;
}

/* ---------- 下一步 ---------- */

.page-about .about-next {
  padding-block: 64px 76px;
  background: linear-gradient(180deg, var(--ink) 0%, var(--plum) 100%);
}

.page-about .about-next__copy {
  max-width: 58ch;
}

.page-about .about-next__copy p {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--lilac);
}

.page-about .about-next__grid {
  margin-top: 34px;
}

.page-about .about-next__link {
  display: grid;
  gap: 6px;
  padding: 22px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(245, 241, 232, 0.035);
  text-decoration: none;
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  border-color: rgba(212, 162, 76, 0.5);
  background: rgba(212, 162, 76, 0.07);
  transform: translateY(-3px);
}

.page-about .about-next__idx {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .about-next__label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  color: var(--porcelain);
}

.page-about .about-next__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--lilac);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-about .about-block {
    padding-block: 76px;
  }

  .page-about .origin-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .origin-figure {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-about .origin-figure__num {
    min-width: 0;
    font-size: 30px;
  }

  .page-about .quality-flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
  }

  .page-about .quality-node {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 16px 14px;
    border-radius: var(--radius);
  }

  .page-about .about-next__grid {
    gap: 16px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding-block: 32px 72px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 54px;
    align-items: center;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-origin__side {
    position: sticky;
    top: calc(var(--top-h) + 32px);
  }

  .page-about .method-steps {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 26px;
  }

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

  .page-about .method-step:nth-child(2) {
    grid-column: 6 / span 5;
    margin-top: 58px;
  }

  .page-about .method-step:nth-child(3) {
    grid-column: 3 / span 5;
    margin-top: 4px;
  }

  .page-about .method-quote {
    grid-column: 1 / -1;
    margin-top: 56px;
    padding: 26px 32px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .about-quality__media {
    margin-bottom: 36px;
  }

  .page-about .tl-item {
    padding-left: 84px;
    padding-bottom: 46px;
  }

  .page-about .tl::before {
    left: 25px;
  }

  .page-about .tl-node {
    width: 52px;
    height: 52px;
    font-size: 14px;
  }

  .page-about .about-next__inner {
    display: grid;
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-next__grid {
    margin-top: 0;
  }
}

@media (min-width: 1280px) {
  .page-about .method-step {
    padding: 32px 30px 28px;
  }

  .page-about .about-hero__inner {
    gap: 68px;
  }
}

@media (hover: hover) and (pointer: fine) {
  .page-about .tl-more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.42s var(--ease), opacity 0.32s var(--ease), margin-top 0.42s var(--ease);
    margin-top: 0;
  }

  .page-about .tl-item:hover .tl-more,
  .page-about .tl-item:focus-within .tl-more {
    max-height: 220px;
    opacity: 1;
    margin-top: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .method-step,
  .page-about .tl-node,
  .page-about .about-next__link {
    transition: none;
  }

  .page-about .method-step:hover,
  .page-about .about-next__link:hover,
  .page-about .about-next__link:focus-visible {
    transform: none;
  }
}