.page-about {
  --about-sticky: 104px;
  --about-pad: clamp(52px, 8vw, 104px);
  --about-edge: rgba(246, 241, 232, 0.12);
  background: var(--fx-ink);
  color: var(--fx-warm);
}

.page-about .section {
  padding-block: var(--about-pad);
}

.page-about .media {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--fx-charcoal);
}

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

.page-about .media--slant {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), 0 100%);
}

.page-about .display-1 {
  margin: 16px 0 0;
  font-size: clamp(34px, 7.2vw, 78px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 900;
  transform: skewX(-1.5deg);
  transform-origin: left bottom;
}

.page-about .display-2 {
  margin: 0;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.page-about .prose {
  max-width: 34em;
  color: rgba(246, 241, 232, 0.8);
}

.page-about .prose p {
  margin: 0 0 1.05em;
}

/* ---------- HERO ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(115% 90% at 92% -12%, rgba(255, 107, 26, 0.3), transparent 58%),
    radial-gradient(85% 70% at -6% 108%, rgba(43, 217, 200, 0.14), transparent 62%);
  pointer-events: none;
}

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

.page-about .crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--fx-grey);
}

.page-about .crumbs a {
  color: var(--fx-grey);
  text-decoration: none;
}

.page-about .crumbs a:hover {
  color: var(--fx-orange);
}

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

.page-about .about-hero__grid {
  display: grid;
  gap: 34px;
  margin-top: 26px;
}

.page-about .lede {
  margin: 22px 0 0;
  max-width: 36em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(246, 241, 232, 0.78);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* 玻璃档案卡 */
.page-about .about-dossier {
  padding: 22px 22px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(28, 34, 40, 0.92), rgba(11, 13, 16, 0.6));
  backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(246, 241, 232, 0.07);
}

.page-about .about-dossier__tag {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--fx-cyan);
}

.page-about .about-dossier__list {
  margin: 14px 0 0;
  padding: 0;
}

.page-about .about-dossier__item {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-block: 11px;
  border-top: 1px solid var(--about-edge);
}

.page-about .about-dossier__item:first-child {
  border-top: 0;
}

.page-about .about-dossier__item dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fx-grey);
}

.page-about .about-dossier__item dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
}

.page-about .about-dossier__num {
  font-size: 20px;
  color: var(--fx-orange);
  font-weight: 700;
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter__grid {
  display: grid;
  gap: 22px;
}

.page-about .about-chapter__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--fx-orange);
}

.page-about .about-chapter__label {
  margin: 8px 0 0;
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.4;
}

.page-about .about-chapter__note {
  margin: 10px 0 0;
  max-width: 22ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fx-grey);
}

.page-about .about-chapter__body > .display-2 {
  margin-bottom: 24px;
}

.page-about .about-chapter__body::before {
  content: "";
  display: block;
  width: 54px;
  height: 3px;
  margin-bottom: 20px;
  background: linear-gradient(90deg, var(--fx-orange), var(--fx-cyan));
}

.page-about .about-pull {
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding-left: 20px;
  border-left: 3px solid var(--fx-orange);
  font-family: var(--font-serif);
  font-size: clamp(19px, 2.5vw, 25px);
  line-height: 1.6;
  color: var(--fx-warm);
}

/* ---------- 团队 ---------- */
.page-about .about-chapter--team {
  background: var(--fx-warm);
  color: var(--fx-ink);
}

.page-about .about-chapter--team .about-chapter__label {
  color: var(--fx-ink);
}

.page-about .about-chapter--team .about-chapter__note {
  color: #5f6670;
}

.page-about .about-chapter--team .about-chapter__body::before {
  background: linear-gradient(90deg, var(--fx-orange), #f0a06a);
}

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

.page-about .about-team__intro {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: #3d444c;
}

.page-about .about-roster {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-roster__item {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  grid-template-areas:
    "num role"
    "num desc";
  gap: 3px 18px;
  padding: 16px 18px;
  border: 1px solid rgba(11, 13, 16, 0.12);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-about .about-roster__item:hover {
  border-color: var(--fx-orange);
  transform: translateY(-2px);
}

.page-about .about-roster__num {
  grid-area: num;
  align-self: center;
  font-size: 30px;
  line-height: 1;
  font-weight: 700;
  color: var(--fx-orange);
}

.page-about .about-roster__role {
  grid-area: role;
  font-size: 16px;
  font-weight: 700;
  color: var(--fx-ink);
}

.page-about .about-roster__desc {
  grid-area: desc;
  font-size: 14px;
  line-height: 1.75;
  color: #555d66;
}

/* ---------- 方法（深蓝绿分区） ---------- */
.page-about .about-chapter--method {
  background: linear-gradient(180deg, var(--fx-teal), #0a1e22);
  border-block: 1px solid rgba(43, 217, 200, 0.16);
}

.page-about .about-method__lede {
  margin: 0 0 26px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(246, 241, 232, 0.76);
}

.page-about .about-glass {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-bottom: 26px;
  border: 1px solid rgba(43, 217, 200, 0.22);
  border-radius: var(--radius);
  background: rgba(11, 13, 16, 0.42);
  backdrop-filter: blur(8px);
  overflow: hidden;
}

.page-about .about-glass__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  border-right: 1px solid rgba(43, 217, 200, 0.1);
  border-bottom: 1px solid rgba(43, 217, 200, 0.1);
}

.page-about .about-glass__num {
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: var(--fx-cyan);
}

.page-about .about-glass__label {
  font-size: 12px;
  line-height: 1.5;
  color: rgba(246, 241, 232, 0.66);
}

.page-about .about-methods {
  display: grid;
  gap: 12px;
}

.page-about .about-method {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(11, 13, 16, 0.36);
  transition: border-color 0.25s var(--ease);
}

.page-about .about-method:hover {
  border-color: rgba(255, 107, 26, 0.45);
}

.page-about .about-method__head {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-method__idx {
  font-size: 12px;
  color: var(--fx-cyan);
}

.page-about .about-method__title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
}

.page-about .about-method__more {
  font-size: 12px;
  color: var(--fx-grey);
}

.page-about .about-method__more-close {
  display: none;
}

.page-about .about-method[open] .about-method__more-open {
  display: none;
}

.page-about .about-method[open] .about-method__more-close {
  display: inline;
  color: var(--fx-orange);
}

.page-about .about-method__panel {
  padding: 14px 18px 18px;
  border-top: 1px dashed rgba(246, 241, 232, 0.14);
}

.page-about .about-method__panel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(246, 241, 232, 0.76);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline__banner {
  aspect-ratio: 8 / 3;
  margin-bottom: 28px;
  border-radius: var(--radius);
}

.page-about .about-timeline {
  margin-top: 4px;
}

.page-about .about-node {
  position: relative;
  margin-left: 6px;
  padding-left: 26px;
  border-left: 2px solid var(--line-strong);
}

.page-about .about-node__head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: baseline;
  padding: 14px 0 10px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-node__dot {
  position: absolute;
  left: -8px;
  top: 20px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--fx-orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 26, 0.16);
}

.page-about .about-node:nth-of-type(even) .about-node__dot {
  background: var(--fx-cyan);
  box-shadow: 0 0 0 4px rgba(43, 217, 200, 0.14);
}

.page-about .about-node__phase {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fx-grey);
}

.page-about .about-node__title {
  font-size: 17px;
  font-weight: 700;
}

.page-about .about-node[open] .about-node__title {
  color: var(--fx-orange);
}

.page-about .about-node__panel {
  padding: 0 0 18px;
}

.page-about .about-node__panel p {
  margin: 0;
  max-width: 34em;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(246, 241, 232, 0.76);
}

/* ---------- 合作（酒红分区） ---------- */
.page-about .about-chapter--partners {
  background: linear-gradient(140deg, var(--fx-wine), #34111d);
  border-block: 1px solid rgba(255, 225, 209, 0.12);
}

.page-about .about-partners {
  display: grid;
  gap: 26px;
}

.page-about .about-partners__text p {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(246, 241, 232, 0.82);
}

.page-about .about-partners__list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .about-partners__list li {
  padding-left: 16px;
  border-left: 2px solid rgba(255, 107, 26, 0.65);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(246, 241, 232, 0.76);
}

.page-about .about-partners__list b {
  color: var(--fx-warm);
  font-weight: 700;
  margin-right: 4px;
}

.page-about .about-record {
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 225, 209, 0.16);
}

.page-about .about-record__lead {
  margin: 0 0 22px;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(246, 241, 232, 0.78);
}

.page-about .about-record__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-record__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 14px;
  border-radius: var(--radius);
  background: rgba(11, 13, 16, 0.4);
  border: 1px solid rgba(255, 225, 209, 0.1);
}

.page-about .about-record__num {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--fx-orange);
}

.page-about .about-record__key {
  font-size: 12px;
  line-height: 1.5;
  color: rgba(246, 241, 232, 0.66);
}

/* ---------- CTA ---------- */
.page-about .about-cta {
  background: linear-gradient(135deg, var(--fx-indigo), var(--fx-charcoal));
}

.page-about .about-cta__box {
  display: grid;
  gap: 24px;
  padding: clamp(26px, 4vw, 44px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(11, 13, 16, 0.36);
}

.page-about .about-cta__text p {
  margin: 14px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(246, 241, 232, 0.78);
}

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

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-about .about-glass {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-record__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(290px, 0.85fr);
    gap: 56px;
    align-items: start;
    margin-top: 38px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 42px;
    align-items: start;
  }

  .page-about .about-team__fig {
    position: sticky;
    top: var(--about-sticky);
  }

  .page-about .about-partners {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 40px;
    align-items: start;
  }

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

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 980px) {
  .page-about .about-chapter__grid {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 60px;
  }

  .page-about .about-chapter__side {
    position: sticky;
    top: var(--about-sticky);
    align-self: start;
  }
}