/* ===== 关于看台 · 页面专属样式 ===== */
.page-about {
  --ab-line: var(--edge);
  --ab-line-soft: var(--edge-soft);
  --ab-panel: var(--panel);
  --ab-panel-strong: var(--panel-strong);
  background:
    radial-gradient(1100px 620px at 86% -12%, rgba(43, 168, 196, .14), transparent 62%),
    radial-gradient(820px 520px at -6% 6%, rgba(61, 240, 138, .06), transparent 58%),
    var(--night);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-head);
  color: var(--headline);
  letter-spacing: -0.01em;
  line-height: 1.12;
  margin: 0;
}

.page-about p {
  margin: 0;
}

.page-about .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

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

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

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  padding-top: calc(var(--header-h) + 28px);
}

.page-about .ab-hero__crumbs {
  margin-bottom: clamp(24px, 3vw, 42px);
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 64px);
}

.page-about .ab-hero__lead .eyebrow {
  margin: 0 0 14px;
}

.page-about .ab-hero h1 {
  font-size: clamp(38px, 6.4vw, 82px);
  font-weight: 800;
  max-width: 17ch;
  margin: 0 0 22px;
  text-wrap: balance;
}

.page-about .ab-hero__text {
  max-width: 46ch;
  color: var(--ink);
  font-size: clamp(16px, 1.6vw, 18px);
  margin-bottom: 26px;
}

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

.page-about .ab-hero__index {
  border-top: 1px solid var(--ab-line);
  padding-top: 20px;
}

.page-about .ab-index__label {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ash);
  margin: 0 0 16px;
}

.page-about .ab-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .ab-index__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ab-line-soft);
}

.page-about .ab-index__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .ab-index__num {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--pulse);
}

.page-about .ab-index__key {
  font-size: 14px;
  color: var(--ash);
  line-height: 1.5;
}

.page-about .ab-hero__media {
  margin-top: clamp(36px, 6vw, 76px);
  border-top: 1px solid var(--ab-line);
  border-bottom: 1px solid var(--ab-line);
}

/* ---------- 通用区块 ---------- */
.page-about .section {
  padding-top: clamp(56px, 8vw, 104px);
}

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lplake, var(--lake));
  margin: 0 0 12px;
}

.page-about .section-head__title,
.page-about .ab-origin h2,
.page-about .ab-daily h2,
.page-about .ab-region h2,
.page-about .ab-values h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 700;
}

.page-about .section-head__note {
  margin-top: 12px;
  color: var(--ash);
  font-size: 15px;
  max-width: 56ch;
}

/* ---------- 起点 ---------- */
.page-about .ab-origin__grid {
  align-items: start;
}

.page-about .ab-origin__body h2 {
  margin-bottom: 20px;
}

.page-about .ab-lead {
  font-size: clamp(17px, 1.7vw, 19px);
  color: var(--headline);
  margin-bottom: 18px;
}

.page-about .ab-origin__body p + p {
  margin-top: 16px;
  color: var(--ink);
}

.page-about .ab-lanes {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ab-line-soft);
  border-top: 1px solid var(--ab-line);
  border-bottom: 1px solid var(--ab-line);
}

.page-about .ab-lane {
  background: var(--night);
  padding: 18px 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 18px;
  align-items: baseline;
}

.page-about .ab-lane__no {
  grid-row: 1 / span 2;
  font-size: 13px;
  color: var(--score);
}

.page-about .ab-lane__title {
  font-size: 19px;
  font-weight: 700;
}

.page-about .ab-lane__text {
  grid-column: 2;
  font-size: 15px;
  color: var(--ash);
  margin: 0;
}

.page-about .ab-origin__aside {
  margin-top: 36px;
}

.page-about .ab-sidecard {
  background: var(--ab-panel);
  border: 1px solid var(--ab-line);
  border-left: 2px solid var(--pulse);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  padding: 24px 22px;
}

.page-about .ab-sidecard__label {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ash);
  margin: 0 0 18px;
}

.page-about .ab-sidecard__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .ab-sidecard__list li {
  font-size: 14px;
  color: var(--ink);
  line-height: 1.6;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ab-line-soft);
}

.page-about .ab-sidecard__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .ab-sidecard__list .mono {
  display: block;
  font-size: 12px;
  color: var(--lake);
  margin-bottom: 4px;
}

/* ---------- 每天在做什么 ---------- */
.page-about .ab-daily__band {
  margin-bottom: clamp(40px, 5vw, 64px);
}

.page-about .ab-daily__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 56px);
}

.page-about .ab-daily__body h2 {
  margin-bottom: 20px;
}

.page-about .ab-daily__body p + p {
  margin-top: 16px;
  color: var(--ink);
}

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

.page-about .ab-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--ab-line);
}

.page-about .ab-step__no {
  grid-row: 1 / span 2;
  font-size: 13px;
  color: var(--pulse);
}

.page-about .ab-step__title {
  font-size: 19px;
  font-weight: 700;
}

.page-about .ab-step__text {
  grid-column: 2;
  font-size: 15px;
  color: var(--ash);
}

/* ---------- 班底 ---------- */
.page-about .ab-team__head {
  margin-bottom: clamp(26px, 3.4vw, 40px);
}

.page-about .ab-team__media {
  margin: 0 0 clamp(26px, 3.4vw, 40px);
  border: 1px solid var(--ab-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .ab-team__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.page-about .ab-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .ab-role {
  transition: transform .4s var(--ease), border-color .3s var(--ease);
}

.page-about .ab-role .card__meta {
  color: var(--score);
  font-size: 13px;
}

.page-about .ab-team__empty {
  margin-top: 20px;
  color: var(--ash);
  font-size: 14px;
}

/* ---------- 服务地区 ---------- */
.page-about .ab-region__body h2 {
  margin-bottom: 20px;
}

.page-about .ab-region__body p + p {
  margin-top: 16px;
}

.page-about .ab-region__actions {
  margin-top: 26px;
}

.page-about .ab-region__aside {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--ab-line);
}

.page-about .ab-region__sub {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 14px;
}

.page-about .ab-region__aside p + p {
  margin-top: 14px;
  color: var(--ash);
  font-size: 15px;
}

/* ---------- 时间轴 ---------- */
.page-about .ab-timeline__head {
  margin-bottom: clamp(28px, 3.6vw, 44px);
}

.page-about .ab-rail {
  padding: 4px var(--gutter) 18px;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  border-bottom: 1px solid var(--ab-line);
}

.page-about .ab-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0;
  min-width: 100%;
}

.page-about .ab-node {
  position: relative;
  flex: 1 0 224px;
  padding: 34px 20px 8px 0;
  outline-offset: 6px;
}

.page-about .ab-node::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--ab-line);
}

.page-about .ab-node__dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 1px solid var(--ab-line);
  background: var(--stand);
}

.page-about .ab-node.is-active .ab-node__dot {
  border-color: var(--pulse);
  background: var(--pulse);
  box-shadow: 0 0 0 5px rgba(61, 240, 138, .16);
  animation: ab-pulse 2.4s ease-in-out infinite;
}

@keyframes ab-pulse {
  0%, 100% { box-shadow: 0 0 0 5px rgba(61, 240, 138, .16); }
  50% { box-shadow: 0 0 0 9px rgba(61, 240, 138, .07); }
}

.page-about .ab-node__year {
  font-size: 24px;
  font-weight: 700;
  color: var(--ash);
  margin: 0 0 6px;
}

.page-about .ab-node.is-active .ab-node__year {
  color: var(--pulse);
}

.page-about .ab-node__title {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 8px;
}

.page-about .ab-node__detail {
  font-size: 14px;
  color: var(--ash);
  line-height: 1.7;
}

/* ---------- 看重的几件事 ---------- */
.page-about .ab-values__intro h2 {
  margin-bottom: 16px;
}

.page-about .ab-values__intro > p {
  color: var(--ink);
}

.page-about .ab-values__media {
  margin: 28px 0 0;
  border: 1px solid var(--ab-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .ab-values__body {
  margin-top: 36px;
}

.page-about .ab-values__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--ab-line);
}

.page-about .ab-value {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--ab-line);
}

.page-about .ab-value__no {
  font-size: 13px;
  color: var(--lake);
  padding-top: 4px;
}

.page-about .ab-value__main h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 8px;
}

.page-about .ab-value__main p {
  font-size: 15px;
  color: var(--ash);
}

/* ---------- 下一步 ---------- */
.page-about .ab-next {
  margin-top: clamp(64px, 9vw, 120px);
  padding: clamp(40px, 6vw, 72px) 0 clamp(56px, 7vw, 88px);
  background: linear-gradient(180deg, transparent, rgba(20, 26, 60, .55) 30%, rgba(20, 26, 60, .75));
  border-top: 1px solid var(--ab-line);
}

.page-about .ab-next__title {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  margin-bottom: 28px;
}

.page-about .ab-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--ab-line-soft);
  border-top: 1px solid var(--ab-line);
  border-bottom: 1px solid var(--ab-line);
}

.page-about .ab-next__item {
  display: block;
  background: var(--night);
  padding: 20px 8px 20px 0;
  text-decoration: none;
  transition: background .25s var(--ease), padding-left .25s var(--ease);
}

.page-about .ab-next__item:hover,
.page-about .ab-next__item:focus-visible {
  background: var(--ab-panel-strong);
  padding-left: 14px;
}

.page-about .ab-next__label {
  display: block;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  color: var(--pulse);
  margin-bottom: 6px;
}

.page-about .ab-next__note {
  display: block;
  font-size: 14px;
  color: var(--ash);
}

/* ---------- 窄屏以上 ---------- */
@media (min-width: 700px) {
  .page-about .ab-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .ab-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-about .ab-origin__aside,
  .page-about .ab-region__aside,
  .page-about .ab-values__body {
    margin-top: 0;
  }

  .page-about .ab-daily__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .ab-node__detail {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height .38s var(--ease), opacity .26s var(--ease);
  }

  .page-about .ab-node:hover .ab-node__detail,
  .page-about .ab-node:focus-within .ab-node__detail,
  .page-about .ab-node:focus .ab-node__detail {
    max-height: 180px;
    opacity: 1;
  }

  .page-about .ab-node:focus-visible {
    outline: 2px solid var(--pulse);
  }
}

@media (min-width: 1100px) {
  .page-about .ab-team__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .ab-role:nth-child(even) {
    transform: translateY(22px);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-node.is-active .ab-node__dot {
    animation: none;
  }

  .page-about .ab-role,
  .page-about .ab-next__item {
    transition: none;
  }

  .page-about .ab-role:nth-child(even) {
    transform: none;
  }
}

.page-about {
  --lplake: currentColor;
}