/* ===== 品牌文化页 /culture/ ===== */

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

.page-about .crumb-sep {
  margin: 0 .5em;
  color: var(--mist);
}

/* ---- 首屏 ---- */
.page-about .ab-hero {
  display: grid;
  gap: 2rem;
  padding-block: 1.6rem 2.6rem;
}

.page-about .ab-hero__text h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.85rem, 7vw, 3.4rem);
  line-height: 1.16;
  letter-spacing: -.015em;
  margin: .5rem 0 1.1rem;
  max-width: 15em;
}

.page-about .ab-hero__text .lead {
  max-width: 34em;
  margin-bottom: 1rem;
}

.page-about .ab-hero__text .prose {
  max-width: 34em;
}

.page-about .ab-hero__media {
  margin: 0;
}

.page-about .ab-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--wood);
  border-radius: 0 var(--r-cut) 0 var(--r-cut);
}

.page-about .ab-hero__media figcaption {
  margin-top: .7rem;
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-about .ab-hero {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    gap: 3.5rem;
    align-items: end;
    padding-block: 2.4rem 3.6rem;
  }
}

/* ---- 速览刻度 ---- */
.page-about .ab-facts-bar {
  padding-bottom: 2.4rem;
}

.page-about .ab-facts {
  list-style: none;
  margin: 0;
  padding: 1.2rem 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.4rem;
  border-top: 2px solid var(--jade);
}

.page-about .ab-facts li {
  display: flex;
  flex-direction: column;
  gap: .1rem;
}

.page-about .ab-facts .idx {
  font-family: var(--font-mono);
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--jade);
}

.page-about .ab-facts li > span:last-child {
  font-size: .84rem;
  color: var(--mist);
  letter-spacing: .04em;
}

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

/* ---- 通用小节标题 ---- */
.page-about .ab-sec-head {
  max-width: 44rem;
  margin-bottom: 2rem;
}

.page-about .ab-sec-head h2,
.page-about .ab-origin h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.8vw, 2.15rem);
  line-height: 1.26;
  letter-spacing: -.01em;
  margin: .4rem 0 .8rem;
}

.page-about .ab-sec-head .lead {
  max-width: 38em;
}

/* ---- 起源 ---- */
.page-about .ab-origin__grid {
  display: grid;
  gap: 2rem;
  padding-block: 2.4rem;
}

.page-about .ab-origin__text .prose p {
  margin-bottom: 1rem;
}

.page-about .ab-origin__figure {
  margin: 0;
}

.page-about .ab-origin__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--wood);
  border-radius: var(--r-cut) 0 var(--r-cut) 0;
}

.page-about .ab-origin__figure figcaption {
  margin-top: .7rem;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--mist);
}

@media (min-width: 820px) {
  .page-about .ab-origin__grid {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    gap: 3rem;
    align-items: start;
  }
}

/* ---- 时间线 ---- */
.page-about .ab-timeline {
  padding-block: 3rem;
}

.page-about .ab-tl__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.6rem;
  border-left: 2px solid var(--wood);
}

.page-about .ab-tl__item {
  position: relative;
  padding: .3rem 0 1.8rem;
  max-width: 46rem;
}

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: calc(-1.6rem - 7px);
  top: .85rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--wood);
  transition: background-color .2s ease, border-color .2s ease;
}

.page-about .ab-tl__item:hover::before,
.page-about .ab-tl__item:focus-within::before {
  background: var(--neon);
  border-color: var(--neon);
}

.page-about .ab-tl__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--wine);
}

.page-about .ab-tl__body h3 {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.4;
  margin: .3rem 0 .45rem;
}

.page-about .ab-tl__body p {
  margin: 0;
  max-width: 36em;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .ab-tl__body a {
  color: var(--sky);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---- 团队 ---- */
.page-about .ab-team {
  padding-block: 3.2rem;
}

.page-about .ab-team__frame {
  margin: 0 0 2rem;
}

.page-about .ab-team__frame img {
  display: block;
  width: 100%;
  aspect-ratio: 14 / 9;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-cut);
}

.page-about .ab-team__frame figcaption {
  margin-top: .7rem;
  font-size: .8rem;
  color: var(--on-dark);
}

.page-about .ab-team .chip {
  color: var(--cream);
  border-color: var(--line-dark);
}

.page-about .ab-team .chip[aria-pressed="true"] {
  background: var(--neon);
  border-color: var(--neon);
  color: #fff;
}

.page-about .ab-team .filter-status {
  color: var(--on-dark);
}

.page-about .ab-team__cards {
  display: grid;
  gap: 1.2rem;
  margin-top: 1.6rem;
}

.page-about .ab-team__card {
  padding: 1.5rem 1.4rem 1.7rem;
}

.page-about .ab-team__card .idx {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--wood);
}

.page-about .ab-team__card h3 {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 800;
  margin: .5rem 0 .6rem;
  color: var(--cream);
}

.page-about .ab-team__card p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--on-dark);
}

@media (min-width: 780px) {
  .page-about .ab-team__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }
  .page-about .ab-team__cards > *:nth-child(even) {
    margin-top: 1.9rem;
  }
}

/* ---- 合作生态 ---- */
.page-about .ab-places {
  padding-block: 3.2rem;
}

.page-about .ab-places__grid {
  display: grid;
  gap: 2.2rem;
}

.page-about .ab-places__map {
  margin: 0;
  padding: 1.1rem 1.1rem 1.3rem;
}

.page-about .ab-map {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .ab-dot circle {
  fill: var(--sky);
  transform-box: fill-box;
  transform-origin: center;
  transition: fill .2s ease, transform .2s ease;
}

.page-about .ab-dot text {
  font-family: var(--font-mono);
  font-size: 12px;
  fill: var(--mist);
  transition: fill .2s ease;
}

.page-about .ab-dot:hover circle {
  fill: var(--neon);
  transform: scale(1.4);
}

.page-about .ab-dot:hover text {
  fill: var(--ink);
}

.page-about .ab-places__map figcaption {
  margin-top: .9rem;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .ab-places__types {
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .ab-places__types li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .9rem;
  align-items: start;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.page-about .ab-places__types .idx {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--sky);
}

.page-about .ab-places__types h3 {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 800;
  margin: 0 0 .3rem;
}

.page-about .ab-places__types p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .ab-places__note {
  margin: 0;
  padding-left: 1rem;
  border-left: 3px solid var(--wood);
  font-size: .88rem;
  line-height: 1.85;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-about .ab-places__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
    gap: 3rem;
    align-items: start;
  }
}

/* ---- 社群 ---- */
.page-about .ab-community {
  padding-block: 3.2rem;
}

.page-about .ab-community__inner {
  display: grid;
  gap: 2rem;
}

.page-about .ab-community h2 {
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 4.6vw, 2rem);
  font-weight: 900;
  line-height: 1.28;
  margin: .4rem 0 .9rem;
  color: var(--cream);
}

.page-about .ab-community__lead p {
  margin: 0;
  max-width: 32em;
  font-size: .96rem;
  line-height: 1.9;
  color: var(--on-dark);
}

.page-about .ab-community__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-community__list li {
  position: relative;
  padding: 1.1rem 0 1.2rem 1.5rem;
  border-top: 1px solid var(--line-dark);
  font-size: .94rem;
  line-height: 1.8;
  color: var(--on-dark);
}

.page-about .ab-community__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.55rem;
  width: 8px;
  height: 8px;
  background: var(--wood);
  transform: rotate(45deg);
}

.page-about .ab-community__list strong {
  display: block;
  margin-bottom: .25rem;
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--cream);
}

@media (min-width: 880px) {
  .page-about .ab-community__inner {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 3.5rem;
  }
}

/* ---- 加入 ---- */
.page-about .ab-join {
  padding-block: 3.2rem 4rem;
}

.page-about .ab-join__cols {
  display: grid;
  gap: 1.5rem;
}

.page-about .ab-join__col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .55rem;
  padding: 1.8rem 1.5rem 2rem;
}

.page-about .ab-join__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .18em;
  color: var(--wine);
}

.page-about .ab-join__col h3 {
  font-family: var(--font-head);
  font-size: 1.28rem;
  font-weight: 900;
  line-height: 1.35;
  margin: 0;
}

.page-about .ab-join__col p {
  margin: 0 0 .9rem;
  font-size: .94rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .ab-join__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

@media (min-width: 820px) {
  .page-about .ab-join__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem;
  }
  .page-about .ab-join__col:nth-child(2) {
    margin-top: 2.4rem;
  }
}