.page-about {
  --about-hair: rgba(244, 239, 227, 0.16);
  --about-ink-soft: rgba(28, 28, 26, 0.78);
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

.page-about .wrap {
  box-sizing: border-box;
}

/* ===== 首屏 ===== */
.page-about .about-head {
  position: relative;
  padding-top: 32px;
  padding-bottom: 56px;
  background:
    radial-gradient(120% 100% at 88% 4%, rgba(47, 93, 74, 0.62), transparent 62%),
    linear-gradient(162deg, var(--deep) 0%, var(--deep-2) 100%);
  color: var(--paper);
  border-bottom: 1px solid var(--gold-soft);
}

.page-about .about-head::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 6px;
  background: repeating-linear-gradient(
    90deg,
    var(--gold) 0 2px,
    transparent 2px 10px
  );
  opacity: 0.34;
}

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

.page-about .about-head .breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.page-about .about-head .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--gold-soft);
}

.page-about .about-head .breadcrumb__link {
  color: var(--cream-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-head .breadcrumb__link:hover {
  color: var(--gold);
  border-color: var(--gold-soft);
}

.page-about .about-head .breadcrumb__current {
  color: var(--paper);
}

.page-about .about-head__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  margin-top: 30px;
}

.page-about .about-head .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .about-head h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 32px;
  line-height: 1.26;
  letter-spacing: 0.01em;
  color: var(--paper);
  max-width: 20em;
}

.page-about .about-head .lead {
  margin: 20px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--cream);
  max-width: 40em;
}

.page-about .about-head__plate {
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-organic);
  background: rgba(244, 239, 227, 0.055);
  padding: 20px 22px 22px;
}

.page-about .about-head__plate .plaque {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .about-head__list {
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-head__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--about-hair);
}

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

.page-about .about-head__row dt {
  font-size: 14px;
  color: var(--cream-soft);
}

.page-about .about-head__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .about-stats {
  list-style: none;
  margin: 40px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--about-hair);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 24px;
}

.page-about .about-stats__item {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-size: 24px;
  letter-spacing: 0.04em;
  color: var(--gold);
  line-height: 1;
}

.page-about .about-stats__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--cream-soft);
}

/* ===== 通用区块骨架 ===== */
.page-about .about-block {
  position: relative;
  padding-top: 64px;
  padding-bottom: 64px;
}

.page-about .about-block + .about-block {
  border-top: 1px solid var(--line-soft);
}

.page-about .about-block__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .about-block__head {
  min-width: 0;
}

.page-about .about-block__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .about-block__num::after {
  content: "";
  display: block;
  width: 52px;
  height: 1px;
  margin-top: 10px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.page-about .about-block__head h2 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 26px;
  line-height: 1.3;
  color: var(--ink);
}

.page-about .about-block__sub {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock);
  max-width: 26em;
}

.page-about .about-block__body {
  min-width: 0;
}

.page-about .about-block__body p {
  margin: 0 0 1.1em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-block__body p:last-child {
  margin-bottom: 0;
}

/* ===== 01 团队 ===== */
.page-about .about-team__intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-team__cards {
  margin-top: 30px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-team__card {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-organic);
  background: var(--paper-2);
  padding: 16px 18px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-team__card[open] {
  border-color: var(--gold-soft);
  box-shadow: var(--shadow-1);
}

.page-about .about-team__card:hover {
  border-color: var(--line);
}

.page-about .about-team__card .fold__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-team__card-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-team__card .fold__body {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
}

.page-about .about-team__card .fold__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

/* ===== 02 三审 ===== */
.page-about .craft-flow {
  position: relative;
  margin-top: 6px;
}

.page-about .craft-flow__path {
  display: none;
}

.page-about .craft-flow__nodes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .craft-node {
  position: relative;
  padding: 20px 20px 22px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-organic);
  box-shadow: var(--shadow-1);
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

.page-about .craft-node::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 22px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px var(--paper);
}

.page-about .craft-node:hover,
.page-about .craft-node:focus-within {
  transform: translateY(-3px);
  border-color: var(--cinnabar);
  box-shadow: var(--shadow-2);
}

.page-about .craft-node__step {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .craft-node__title {
  margin: 8px 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .craft-node__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--about-ink-soft);
}

.page-about .about-review__note {
  margin-top: 26px;
  padding: 16px 20px;
  border-left: 3px solid var(--gold);
  background: rgba(201, 162, 39, 0.08);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
}

.page-about .about-review__note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--about-ink-soft);
}

.page-about .about-review__figure {
  margin: 30px 0 0;
}

/* ===== 03 沿革 ===== */
.page-about .about-timeline__figure {
  margin: 0 0 34px;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 6px 0 0 24px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: repeating-linear-gradient(
    180deg,
    var(--gold-soft) 0 6px,
    transparent 6px 13px
  );
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 30px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px var(--paper);
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cinnabar);
}

.page-about .about-timeline__title {
  margin: 8px 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.45;
  color: var(--ink);
}

.page-about .about-timeline__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

/* ===== 04 收录标准 ===== */
.page-about .about-rules {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .about-rule {
  min-width: 0;
}

.page-about .about-rule .card__title {
  font-family: var(--font-head);
  font-weight: 700;
}

.page-about .about-tiers {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-tiers__lead {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.5;
  color: var(--ink);
}

.page-about .about-tiers__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-tier {
  display: grid;
  gap: 8px;
  padding: 14px 16px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-m);
}

.page-about .about-tier p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-ink-soft);
}

/* ===== 05 合作 ===== */
.page-about .about-partners p {
  margin: 0 0 1.1em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-partners p:last-child {
  margin-bottom: 0;
}

.page-about .about-partners__chips {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-chip {
  padding: 8px 14px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--deep);
  background: var(--paper-2);
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-about .about-chip:hover {
  border-color: var(--cinnabar);
  color: var(--cinnabar-2);
}

/* ===== 06 数字 ===== */
.page-about .about-block--deep {
  color: var(--paper);
  background:
    radial-gradient(110% 90% at 12% 0%, rgba(47, 93, 74, 0.7), transparent 60%),
    linear-gradient(180deg, var(--deep) 0%, var(--deep-2) 100%);
}

.page-about .about-block--deep .about-block__num {
  color: var(--gold);
}

.page-about .about-block--deep .about-block__head h2 {
  color: var(--paper);
}

.page-about .about-block--deep .about-block__sub {
  color: var(--cream-soft);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-figure {
  padding: 22px 0 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-figure__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 40px;
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.page-about .about-figure__label {
  display: block;
  margin-top: 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--paper);
}

.page-about .about-figure p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--cream-soft);
}

.page-about .about-cta {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta .btn {
  flex: 0 1 auto;
}

.page-about .about-cta__note {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--cream-soft);
}

.page-about .about-cta__note a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-soft);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-cta__note a:hover {
  color: var(--paper);
  border-color: var(--paper);
}

/* ===== 图片通用 ===== */
.page-about .figure__frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-organic);
  border: 1px solid var(--line-soft);
}

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

.page-about .figure__box {
  position: absolute;
  top: 12%;
  left: 8%;
  width: 42%;
  height: 26%;
  border: 1px solid var(--cinnabar);
  border-radius: 4px;
  background: rgba(239, 217, 160, 0.14);
  pointer-events: none;
}

.page-about .figure__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--rock);
}

/* ===== 焦点可见性 ===== */
.page-about a:focus-visible,
.page-about summary:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}

/* ===== 响应式 ===== */
@media (min-width: 640px) {
  .page-about .about-head h1 {
    font-size: 36px;
  }

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

  .page-about .about-team__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-rules {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

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

  .page-about .about-figures {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
  }
}

@media (min-width: 780px) {
  .page-about .craft-flow__path {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 58%;
    pointer-events: none;
  }

  .page-about .craft-flow__path path {
    fill: none;
    stroke: var(--gold-soft);
    stroke-width: 1.4;
    stroke-dasharray: 5 7;
    vector-effect: non-scaling-stroke;
  }

  .page-about .craft-flow__nodes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
    align-items: stretch;
    padding-top: 26px;
  }

  .page-about .craft-node + .craft-node::after {
    content: "";
    position: absolute;
    top: 50%;
    right: 100%;
    width: 28px;
    height: 1px;
    background: var(--line-soft);
    transition: background-color 0.2s ease;
  }

  .page-about .craft-node:hover::after,
  .page-about .craft-node:focus-within::after {
    background: var(--cinnabar);
  }

  .page-about .about-team__intro {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
    gap: 34px;
  }
}

@media (min-width: 960px) {
  .page-about .about-head {
    padding-top: 44px;
    padding-bottom: 76px;
  }

  .page-about .about-head__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 60px;
    align-items: start;
    margin-top: 42px;
  }

  .page-about .about-head h1 {
    font-size: 44px;
  }

  .page-about .about-head .lead {
    font-size: 17px;
  }

  .page-about .about-block {
    padding-top: 96px;
    padding-bottom: 96px;
  }

  .page-about .about-block__grid {
    gap: 34px 60px;
    align-items: start;
  }

  .page-about .about-block__grid--narrow-head {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  }

  .page-about .about-block__grid--wide-head {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }

  .page-about .about-block__head {
    padding-left: 26px;
    border-left: 1px solid var(--line-soft);
  }

  .page-about .about-block__head h2 {
    font-size: 32px;
  }

  .page-about .about-block__sub {
    font-size: 16px;
  }

  .page-about .about-figure__num {
    font-size: 48px;
  }
}

@media (min-width: 1120px) {
  .page-about .about-rules {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-timeline {
    padding-left: 30px;
  }

  .page-about .about-timeline__item::before {
    left: -30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .craft-node,
  .page-about .about-team__card,
  .page-about .about-chip,
  .page-about .about-cta__note a,
  .page-about .about-head .breadcrumb__link {
    transition: none;
  }

  .page-about .craft-node:hover,
  .page-about .craft-node:focus-within {
    transform: none;
  }
}