/* ===== 品牌文化页 /culture/ ===== */
.page-about {
  --ab-gap: clamp(56px, 8vw, 112px);
  --ab-card: rgba(255, 255, 255, 0.045);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .sk-section {
  position: relative;
}

.page-about .sk-section + .sk-section {
  margin-top: var(--ab-gap);
}

/* ---------- 通用图容器 ---------- */
.page-about .ab-fig {
  margin: 0;
}

.page-about .ab-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  object-fit: cover;
}

.page-about .ab-fig .sk-media__cap {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--smoke);
}

/* ================= 01 首屏 ================= */
.page-about .ab-hero {
  padding-top: clamp(24px, 4vw, 52px);
  overflow: hidden;
}

.page-about .ab-hero__slash {
  position: absolute;
  top: -100px;
  right: -140px;
  width: min(48vw, 520px);
  height: 660px;
  background: linear-gradient(180deg, rgba(208, 32, 47, 0.36), rgba(126, 15, 27, 0.08) 58%, transparent);
  transform: rotate(-6deg);
  border-radius: 6px;
  pointer-events: none;
}

.page-about .ab-hero__title {
  position: relative;
  max-width: 16ch;
  margin: 14px 0 0;
  font-size: clamp(2.1rem, 6.2vw, 4.6rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
}

.page-about .ab-hero__title em {
  font-style: normal;
  font-weight: 700;
  color: var(--red-bright);
}

.page-about .ab-hero__body {
  position: relative;
  margin-top: clamp(20px, 3vw, 34px);
  display: grid;
  gap: 18px;
  max-width: 64ch;
}

.page-about .ab-hero__side {
  color: var(--smoke);
  border-left: 1px solid var(--line);
  padding-left: 16px;
}

@media (min-width: 900px) {
  .page-about .ab-hero__body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 44px;
    max-width: none;
  }

  .page-about .ab-hero__side {
    margin-top: 6px;
  }
}

/* 首屏数字带 */
.page-about .ab-facts {
  list-style: none;
  margin: clamp(34px, 5vw, 60px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

@media (min-width: 760px) {
  .page-about .ab-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .ab-facts__item {
  background: var(--ink-2);
  padding: 18px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-about .ab-facts__num {
  font-size: clamp(1.35rem, 2.6vw, 2rem);
  line-height: 1;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.page-about .ab-facts__lab {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--smoke);
}

/* ================= 02 运营历程 ================= */
.page-about .ab-history__title {
  max-width: 22ch;
}

.page-about .ab-history__intro {
  max-width: 62ch;
  margin-top: 12px;
}

.page-about .ab-history__figure {
  margin: clamp(30px, 5vw, 54px) 0 clamp(30px, 5vw, 56px);
}

.page-about .ab-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 40px;
  position: relative;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(243, 240, 234, 0.26) 0 5px,
    transparent 5px 13px
  );
}

.page-about .ab-node {
  position: relative;
  padding-bottom: clamp(22px, 3.4vw, 34px);
  margin-bottom: clamp(22px, 3.4vw, 34px);
  border-bottom: 1px solid var(--line);
}

.page-about .ab-node:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-about .ab-node::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(208, 32, 47, 0.16);
  transition: background 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.page-about .ab-node:hover::before,
.page-about .ab-node:focus-within::before {
  background: var(--red-bright);
  box-shadow: 0 0 0 7px rgba(255, 77, 94, 0.22);
}

.page-about .ab-node:focus {
  outline: none;
}

.page-about .ab-node__idx {
  display: block;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--gold);
  margin-bottom: 6px;
}

.page-about .ab-node__title {
  margin: 0 0 10px;
  font-size: clamp(1.05rem, 1.7vw, 1.32rem);
  font-weight: 500;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .ab-node__extra {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  margin-top: 0;
  transition: max-height 0.42s var(--ease), opacity 0.32s var(--ease), margin-top 0.32s var(--ease);
}

.page-about .ab-node__extra .sk-text {
  border-left: 2px solid var(--cyan);
  padding-left: 14px;
  color: var(--smoke);
}

@media (hover: hover) and (min-width: 860px) {
  .page-about .ab-node:hover .ab-node__extra,
  .page-about .ab-node:focus-within .ab-node__extra {
    max-height: 260px;
    opacity: 1;
    margin-top: 14px;
  }
}

@media (hover: none), (max-width: 859px) {
  .page-about .ab-node__extra {
    max-height: none;
    opacity: 1;
    margin-top: 14px;
  }
}

/* ================= 03 团队 ================= */
.page-about .ab-crew__title {
  max-width: 20ch;
}

.page-about .ab-crew__intro {
  max-width: 60ch;
  margin-top: 12px;
}

.page-about .ab-crew__wrap {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  margin-top: clamp(28px, 4vw, 46px);
}

@media (min-width: 900px) {
  .page-about .ab-crew__wrap {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
}

.page-about .ab-crew__bands {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

@media (min-width: 640px) {
  .page-about .ab-crew__bands {
    grid-template-columns: 1.6fr 1fr 0.8fr;
    align-items: end;
  }
}

.page-about .ab-crew__item {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 16px 18px;
  background: var(--ab-card);
  border: 1px solid var(--line);
  border-radius: 3px;
  min-width: 0;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .ab-crew__item:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.16);
}

.page-about .ab-crew__item::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: var(--red);
}

.page-about .ab-crew__item--rules::before {
  background: var(--cyan);
}

.page-about .ab-crew__item--data::before {
  background: var(--gold);
}

@media (min-width: 640px) {
  .page-about .ab-crew__item--edit { min-height: 258px; }
  .page-about .ab-crew__item--rules { min-height: 210px; }
  .page-about .ab-crew__item--data { min-height: 182px; }
}

.page-about .ab-crew__role {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-about .ab-crew__item .sk-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--smoke);
}

.page-about .ab-crew__num {
  margin: 0;
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  line-height: 0.9;
  color: var(--paper);
}

.page-about .ab-crew__unit {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--smoke);
  margin-left: 6px;
}

/* ================= 04 三条业务线 ================= */
.page-about .ab-lines__title {
  max-width: 24ch;
}

.page-about .ab-lines__intro {
  max-width: 58ch;
  margin-top: 12px;
}

.page-about .ab-lines {
  margin-top: clamp(26px, 4vw, 42px);
  display: grid;
  gap: 10px;
}

.page-about .ab-lines .sk-disclosure__item {
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--ink-2);
  overflow: hidden;
}

.page-about .ab-lines .sk-disclosure__btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 18px 18px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--paper);
  font-family: inherit;
}

.page-about .ab-lines__name {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.04em;
  flex: 1 1 auto;
  min-width: 0;
}

.page-about .ab-lines__meta {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
  white-space: nowrap;
}

.page-about .ab-lines .sk-disclosure__inner {
  padding: 0 18px 20px;
  display: grid;
  gap: 12px;
}

.page-about .ab-lines .sk-disclosure__inner .sk-text {
  border-left: 2px solid rgba(63, 167, 158, 0.5);
  padding-left: 14px;
  color: var(--smoke);
}

/* ================= 05 资料库 ================= */
.page-about .ab-lib__title {
  max-width: 22ch;
}

.page-about .ab-lib {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(26px, 4vw, 44px);
}

@media (min-width: 760px) {
  .page-about .ab-lib {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .ab-lib__stat {
  border-left: 2px solid var(--red);
  padding: 6px 0 6px 20px;
  min-width: 0;
}

.page-about .ab-lib__stat--cyan {
  border-left-color: var(--cyan);
}

.page-about .ab-lib__num {
  display: block;
  font-size: clamp(2.4rem, 6.4vw, 4.4rem);
  line-height: 0.94;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .ab-lib__num em {
  font-style: normal;
  font-size: 0.46em;
  vertical-align: super;
  color: var(--red-bright);
  margin-left: 2px;
}

.page-about .ab-lib__unit {
  display: block;
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--smoke);
}

.page-about .ab-lib__note {
  max-width: 68ch;
  margin-top: clamp(24px, 3.6vw, 38px);
}

/* ================= 06 更新节奏 ================= */
.page-about .ab-rhythm__title {
  max-width: 22ch;
}

.page-about .ab-rhythm__intro {
  max-width: 54ch;
  margin-top: 12px;
}

.page-about .ab-rhythm__wrap {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(26px, 4vw, 44px);
}

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

.page-about .ab-rhythm__list {
  min-width: 0;
}

.page-about .ab-rhythm__row {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.page-about .ab-rhythm__row:last-child {
  border-bottom: 1px solid var(--line);
}

@media (min-width: 640px) {
  .page-about .ab-rhythm__row {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: start;
    gap: 24px;
  }
}

.page-about .ab-rhythm__when {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
  white-space: nowrap;
}

.page-about .ab-rhythm__what {
  min-width: 0;
}

.page-about .ab-rhythm__what h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 500;
  color: var(--paper);
}

.page-about .ab-rhythm__what .sk-text {
  color: var(--smoke);
}

/* ================= 07 反馈与修订 ================= */
.page-about .ab-loop__title {
  max-width: 24ch;
}

.page-about .ab-loop__intro {
  max-width: 56ch;
  margin-top: 12px;
}

.page-about .ab-loop {
  display: grid;
  gap: 14px;
  margin-top: clamp(26px, 4vw, 44px);
}

@media (min-width: 820px) {
  .page-about .ab-loop {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .ab-loop__step {
  position: relative;
  padding: 24px 20px 26px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  min-width: 0;
}

.page-about .ab-loop__step::after {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  width: 34px;
  height: 3px;
  background: var(--red);
}

.page-about .ab-loop__no {
  display: block;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--cyan);
  margin-bottom: 12px;
}

.page-about .ab-loop__h {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 500;
  color: var(--paper);
}

.page-about .ab-loop__step .sk-text {
  color: var(--smoke);
}

/* CTA */
.page-about .ab-cta {
  margin-top: clamp(36px, 5.6vw, 64px);
  padding: clamp(26px, 4vw, 44px);
  display: grid;
  gap: 22px;
  background: linear-gradient(112deg, rgba(208, 32, 47, 0.92) 0%, rgba(126, 15, 27, 0.6) 54%, rgba(11, 11, 13, 0.15) 100%);
  border-radius: 4px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 26px));
}

@media (min-width: 860px) {
  .page-about .ab-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
}

.page-about .ab-cta__h {
  margin: 0 0 10px;
  font-size: clamp(1.1rem, 1.9vw, 1.45rem);
  font-weight: 500;
  color: var(--paper);
}

.page-about .ab-cta .sk-text {
  max-width: 52ch;
  color: rgba(243, 240, 234, 0.82);
}

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

.page-about .ab-loop__foot {
  max-width: 72ch;
  margin-top: clamp(24px, 3.6vw, 36px);
  color: var(--smoke);
}

.page-about .ab-loop__foot a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--red);
  padding-bottom: 1px;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .ab-loop__foot a:hover,
.page-about .ab-loop__foot a:focus-visible {
  color: var(--red-bright);
  border-bottom-color: var(--red-bright);
}

/* ---------- 窄屏收束 ---------- */
@media (max-width: 520px) {
  .page-about .ab-hero__slash {
    right: -180px;
    width: 380px;
    height: 520px;
  }

  .page-about .ab-timeline {
    padding-left: 28px;
  }

  .page-about .ab-timeline::before {
    left: 7px;
  }

  .page-about .ab-node::before {
    left: -24px;
    width: 9px;
    height: 9px;
  }

  .page-about .ab-node__idx {
    letter-spacing: 0.16em;
  }
}
<<<END>>>