.page-about {
  --about-pad: clamp(52px, 8vw, 104px);
  --about-radius: 4px;
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

.page-about :focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(46px, 7vw, 88px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -8% -10% auto -10%;
  height: 72%;
  background:
    radial-gradient(58% 100% at 78% 4%, rgba(233, 185, 73, .16), transparent 66%),
    radial-gradient(48% 82% at 6% 26%, rgba(123, 77, 255, .15), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

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

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-hero__eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--gold);
  margin: 0 0 14px;
}

.page-about .about-hero h1 {
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 52px);
  line-height: 1.14;
  letter-spacing: -.02em;
  margin: 0 0 20px;
  color: var(--paper);
}

.page-about .about-hero__lede {
  margin: 0 0 14px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--mist);
  max-width: 60ch;
}

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

.page-about .about-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .about-hero__facts li {
  background: var(--ink);
  padding: 18px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-hero__facts .num {
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 27px);
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--gold);
}

.page-about .about-hero__facts .label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--mist);
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  position: relative;
  padding: var(--about-pad) 0;
}

.page-about .about-section--teal {
  background: linear-gradient(180deg, rgba(14, 42, 46, .78), rgba(10, 16, 36, .18));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-section--wine {
  background: linear-gradient(180deg, rgba(122, 31, 61, .34), rgba(10, 16, 36, .1));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(28px, 4vw, 52px);
  max-width: 64ch;
}

.page-about .about-head__no {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--gold);
  margin: 0;
}

.page-about .about-head__title {
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.24;
  letter-spacing: -.01em;
  margin: 0;
  color: var(--paper);
}

.page-about .about-head__quote {
  font-family: var(--serif);
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.85;
  color: var(--mist);
  margin: 2px 0 0;
  padding-left: 16px;
  border-left: 1px solid rgba(233, 185, 73, .5);
}

.page-about .about-note {
  margin: 22px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 62ch;
}

/* ---------- 时间线 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .timeline__node {
  position: relative;
  padding: 0 0 26px 26px;
  border-left: 1px solid var(--line);
}

.page-about .timeline__node:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-about .timeline__node::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 7px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(233, 185, 73, .14);
}

.page-about .timeline__year {
  display: block;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--gold);
  margin-bottom: 6px;
}

.page-about .timeline__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .timeline__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 36ch;
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: clamp(30px, 4.5vw, 56px) 0 0;
}

.page-about .about-figure img,
.page-about .about-split__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  background: var(--ink-2);
}

.page-about .about-figure img {
  aspect-ratio: 2 / 1;
}

.page-about .about-split__figure img {
  aspect-ratio: 14 / 9;
}

.page-about .about-figure figcaption,
.page-about .about-split__figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

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

/* ---------- 分栏 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
}

/* ---------- 城市索引 ---------- */
.page-about .city-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .city-list li {
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .city-list__no {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-about .city-list__name {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--paper);
}

/* ---------- 比例条 ---------- */
.page-about .meter {
  margin-top: 26px;
}

.page-about .meter__label {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .meter__label b {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--teal);
}

.page-about .meter__track {
  height: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(243, 239, 230, .06);
  overflow: hidden;
}

.page-about .meter__fill {
  display: block;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--gold));
}

/* ---------- 五类区域 ---------- */
.page-about .zones {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .zone {
  display: grid;
  grid-template-columns: 3.2em minmax(0, 1fr);
  gap: 4px 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .zone__no {
  grid-row: span 2;
  margin: 0;
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-about .zone__title {
  grid-column: 2;
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .zone__desc {
  grid-column: 2;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 58ch;
}

/* ---------- 42 项细则 ---------- */
.page-about .rules {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .dial {
  position: relative;
  width: 168px;
  height: 168px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: radial-gradient(circle at 50% 48%, rgba(233, 185, 73, .12), transparent 70%);
  display: grid;
  place-items: center;
  text-align: center;
  isolation: isolate;
}

.page-about .dial::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  z-index: -1;
  background: conic-gradient(from -90deg, var(--gold) 0deg, var(--gold-hi) 140deg, var(--gold) 250deg, rgba(233, 185, 73, .1) 360deg);
  -webkit-mask: radial-gradient(circle, transparent 0 80px, #000 81px);
          mask: radial-gradient(circle, transparent 0 80px, #000 81px);
}

.page-about .dial__inner {
  display: grid;
  justify-items: center;
  gap: 6px;
}

.page-about .dial__num {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 46px;
  line-height: 1;
  color: var(--gold);
}

.page-about .dial__unit {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-about .rules__note {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 34ch;
}

.page-about .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .step {
  background: var(--ink);
  padding: 18px 20px;
  display: grid;
  grid-template-columns: 2.8em minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
}

.page-about .step__no {
  grid-row: span 2;
  margin: 0;
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--teal);
}

.page-about .step__title {
  grid-column: 2;
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .step__desc {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 团队 ---------- */
.page-about .team-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .team-stats li {
  background: var(--ink);
  padding: 16px 18px;
  display: grid;
  grid-template-columns: 3.4em minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
}

.page-about .team-stats__num {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.1;
  color: var(--gold);
}

.page-about .team-stats__cap {
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 年度节奏 ---------- */
.page-about .stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .stat {
  background: var(--ink);
  padding: clamp(18px, 2.6vw, 26px);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .stat__num {
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.1;
  color: var(--gold);
}

.page-about .stat__unit {
  font-size: 13px;
  margin-left: 4px;
  color: var(--gold-hi);
}

.page-about .stat__cap {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 反馈与回顾 ---------- */
.page-about .review-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .review {
  display: grid;
  grid-template-columns: 3.2em minmax(0, 1fr);
  gap: 4px 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .review__no {
  grid-row: span 2;
  margin: 0;
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--gold-hi);
}

.page-about .review__title {
  grid-column: 2;
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .review__desc {
  grid-column: 2;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 62ch;
}

/* ---------- 下一页索引 ---------- */
.page-about .about-next {
  padding: var(--about-pad) 0 calc(var(--about-pad) * .8);
}

.page-about .about-next__title {
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(20px, 2.8vw, 26px);
  line-height: 1.3;
  letter-spacing: -.01em;
  margin: 0 0 24px;
  color: var(--paper);
}

.page-about .next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .next-list li {
  background: var(--ink);
}

.page-about .next-list a {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 22px 20px;
  text-decoration: none;
  color: var(--paper);
  transition: background-color .25s ease;
}

.page-about .next-list a:hover,
.page-about .next-list a:focus-visible {
  background: rgba(123, 77, 255, .14);
}

.page-about .next-list .t {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .01em;
}

.page-about .next-list .d {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .next-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-about .stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .timeline__node {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding: 28px 24px 0 0;
  }

  .page-about .timeline__node:last-child {
    border-top-color: var(--line);
  }

  .page-about .timeline__node::before {
    left: 0;
    top: -4.5px;
  }

  .page-about .timeline__desc {
    max-width: none;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
  }

  .page-about .about-split--wide {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-about .about-split--flip .about-split__text {
    order: 2;
  }

  .page-about .about-split--flip .about-split__figure {
    order: 1;
  }

  .page-about .rules {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }

  .page-about .zone {
    grid-template-columns: 3.2em minmax(0, 15em) minmax(0, 1fr);
    align-items: baseline;
    padding: 22px 0;
  }

  .page-about .zone__no {
    grid-row: auto;
    padding-top: 0;
  }

  .page-about .zone__title {
    grid-column: 2;
  }

  .page-about .zone__desc {
    grid-column: 3;
  }

  .page-about .review {
    grid-template-columns: 3.2em minmax(0, 15em) minmax(0, 1fr);
    align-items: baseline;
    padding: 22px 0;
  }

  .page-about .review__no {
    grid-row: auto;
    padding-top: 0;
  }

  .page-about .review__title {
    grid-column: 2;
  }

  .page-about .review__desc {
    grid-column: 3;
  }

  .page-about .step {
    grid-template-columns: 3.2em minmax(0, 1fr);
    padding: 20px 24px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-split {
    gap: clamp(40px, 5vw, 72px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .next-list a {
    transition: none;
  }
}