/* ================= 品牌故事页 page-about ================= */
.page-about {
  --rail: 72px;
  --note-w: 208px;
  background: var(--paper);
  color: var(--ink);
  padding-bottom: clamp(56px, 9vw, 96px);
  overflow-x: clip;
}

.page-about .breadcrumb {
  padding: 24px 0 0;
}

.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.page-about .breadcrumb__list a {
  color: var(--steel);
  text-decoration: none;
}

.page-about .breadcrumb__list a:hover {
  color: var(--red);
}

/* ---------- 开场 ---------- */
.page-about .about-hero {
  padding: clamp(24px, 4vw, 48px) 0 clamp(32px, 5vw, 56px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}

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

.page-about .about-hero__title {
  margin: 12px 0 18px;
  font-family: var(--ff-display);
  font-size: var(--fs-display);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0.02em;
  max-width: 22em;
}

.page-about .lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  max-width: 38em;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 28px 0 0;
  border-top: 1px solid var(--ink);
}

.page-about .about-fact {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--hairline);
}

.page-about .about-fact dt {
  font-family: var(--ff-display);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--steel);
  text-transform: uppercase;
}

.page-about .about-fact dd {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.page-about .about-fact .num {
  font-family: var(--ff-num);
  font-weight: 700;
  color: var(--red);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  border-top: 3px solid var(--red);
}

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

/* ---------- 本册目录 ---------- */
.page-about .about-index {
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--hairline);
  padding: 18px 0 20px;
}

.page-about .about-index__label {
  margin: 0 0 12px;
  color: var(--steel);
}

.page-about .anchor-index__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .anchor-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 3px;
}

.page-about .anchor-index__link:hover,
.page-about .anchor-index__link[aria-current="true"] {
  color: var(--red);
  border-bottom-color: var(--red);
}

.page-about .anchor-index__num {
  font-family: var(--ff-num);
  font-size: 11px;
  font-weight: 700;
  color: var(--red);
  letter-spacing: 0.06em;
}

/* ---------- 档案正文 ---------- */
.page-about .about-body {
  position: relative;
  padding-top: clamp(40px, 6vw, 72px);
}

.page-about .chapter {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  padding-bottom: clamp(40px, 7vw, 76px);
}

.page-about .chapter:last-of-type {
  padding-bottom: clamp(28px, 4vw, 48px);
}

.page-about .chapter__mark {
  display: flex;
  align-items: center;
}

.page-about .chapter__num {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  background: var(--red);
  color: var(--paper);
  font-family: var(--ff-num);
  font-size: 12px;
  font-weight: 700;
}

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

.page-about .chapter__title {
  margin: 0 0 16px;
  font-family: var(--ff-display);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: 0.02em;
}

.page-about .chapter__main p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  overflow-wrap: break-word;
}

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

.page-about .chapter__main a {
  color: var(--deep-red);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline);
}

.page-about .chapter__main a:hover {
  border-bottom-color: var(--red);
}

.page-about .chapter__figure {
  margin: 0 0 20px;
}

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

/* 旁注 */
.page-about .chapter__note {
  border-left: 1px solid var(--hairline);
  padding: 4px 0 4px 14px;
  color: var(--steel);
  font-size: 13px;
  line-height: 1.6;
}

.page-about .note__label {
  margin: 0 0 6px;
  color: var(--steel);
}

.page-about .chapter__note p {
  margin: 0 0 8px;
}

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

/* 放大数字 */
.page-about .breakout {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 20px;
  margin: 24px 0;
  padding: 18px 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.page-about .breakout__num {
  font-family: var(--ff-num);
  font-size: clamp(52px, 11vw, 104px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--red);
  font-variant-numeric: tabular-nums;
}

.page-about .breakout__cap {
  margin: 0;
  max-width: 24em;
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel);
}

/* 客场卡片 */
.page-about .away-card {
  background: var(--sea);
  color: var(--paper);
  padding: clamp(20px, 3vw, 28px);
  margin: 24px 0;
}

.page-about .away-card__label {
  margin: 0 0 16px;
  color: var(--silver);
}

.page-about .away-card__row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 48px;
}

.page-about .away-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .away-stat__value {
  font-family: var(--ff-num);
  font-size: clamp(48px, 9vw, 84px);
  font-weight: 700;
  line-height: 0.9;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .away-stat__unit {
  font-size: 0.4em;
  margin-left: 4px;
  color: var(--cyan);
}

.page-about .away-stat__label {
  font-family: var(--ff-display);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--silver);
  text-transform: uppercase;
}

/* 团队列表 */
.page-about .team-list {
  margin: 24px 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hairline);
}

.page-about .team-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
}

.page-about .team-item__role {
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-about .team-item__role::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 10px;
  background: var(--red);
  vertical-align: middle;
}

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

/* 里程碑 */
.page-about .milestone-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.page-about .milestone {
  border-bottom: 1px solid var(--hairline);
}

.page-about .milestone summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--ff-display);
  font-size: 15px;
  letter-spacing: 0.04em;
}

.page-about .milestone summary::-webkit-details-marker {
  display: none;
}

.page-about .milestone summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--ff-num);
  font-size: 16px;
  font-weight: 700;
  color: var(--red);
}

.page-about .milestone[open] summary::after {
  content: "\2013";
}

.page-about .milestone__season {
  font-family: var(--ff-num);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--red);
}

.page-about .milestone__title {
  font-weight: 700;
}

.page-about .milestone__body {
  padding: 0 0 20px;
}

.page-about .milestone__body p {
  margin: 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

/* 结尾索引 */
.page-about .about-next {
  border-top: 1px solid var(--ink);
  padding-top: 24px;
}

.page-about .about-next__title {
  margin: 0 0 8px;
  font-family: var(--ff-display);
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-about .next-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .next-links a {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--hairline);
  text-decoration: none;
  color: var(--ink);
  font-family: var(--ff-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-about .next-links a span {
  font-family: var(--ff-body);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--steel);
}

.page-about .next-links a:hover {
  color: var(--red);
}

/* ---------- 动效 ---------- */
.js .page-about [data-reveal]:not(.is-visible) {
  opacity: 0;
  transform: translateY(12px);
}

.page-about [data-reveal] {
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

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

  .page-about .about-fact {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 16px 18px 16px 0;
    border-bottom: 0;
    border-right: 1px solid var(--hairline);
  }

  .page-about .about-fact:last-child {
    border-right: 0;
    padding-right: 0;
  }

  .page-about .anchor-index__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px 32px;
  }

  .page-about .about-body::before {
    content: "";
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--hairline);
  }

  .page-about .chapter {
    grid-template-columns: var(--rail) minmax(0, 1fr) var(--note-w);
    gap: 32px;
    align-items: start;
  }

  .page-about .chapter__main {
    max-width: 62ch;
  }

  .page-about .chapter__note {
    margin-top: 44px;
    padding-left: 18px;
  }

  .page-about .team-item {
    grid-template-columns: 180px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }

  .page-about .milestone summary {
    gap: 20px;
  }

  .page-about .breakout {
    margin: 32px 0;
  }

  .page-about .about-next {
    padding-left: var(--rail);
  }
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .js .page-about [data-reveal]:not(.is-visible) {
    opacity: 1;
    transform: none;
  }

  .page-about [data-reveal] {
    transition: none;
  }
}