/* ============================================================
   品牌自述 /who-we-are/  作用域：.page-about
   画册式纵向叙事：左侧等宽展签 + 右侧留白正文
   ============================================================ */

.page-about {
  --about-tag-w: 168px;
  --about-line: rgba(255, 255, 255, 0.13);
  --about-glass: rgba(17, 21, 30, 0.72);
  --about-text: #c3cddd;
  background: var(--k5-bg);
  color: var(--k5-ink);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 4.4vw, 60px) 0 clamp(38px, 6vw, 88px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, 0.026) 0 1px,
    transparent 1px 6px
  );
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: min(780px, 74vw);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, rgba(33, 230, 210, 0.15), rgba(33, 230, 210, 0) 62%);
  pointer-events: none;
}

.page-about .k5-breadcrumb {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(22px, 3.4vw, 40px);
  font-family: var(--k5-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--k5-mute);
}

.page-about .k5-breadcrumb a {
  color: var(--k5-mute);
  text-decoration: none;
  transition: color 0.24s var(--k5-ease);
}

.page-about .k5-breadcrumb a:hover,
.page-about .k5-breadcrumb a:focus-visible {
  color: var(--k5-cyan);
}

.page-about .k5-breadcrumb__sep {
  opacity: 0.45;
}

.page-about .about-hero__label {
  position: relative;
  z-index: 1;
  display: inline-block;
  margin: 0;
  padding: 5px 12px;
  border: 1px solid var(--k5-edge);
  border-left: 2px solid var(--k5-cyan);
  font-family: var(--k5-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--k5-cyan);
}

.page-about .about-hero__title {
  position: relative;
  z-index: 1;
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 22ch;
  font-size: clamp(29px, 6.4vw, 60px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.012em;
}

.page-about .about-hero__intro {
  position: relative;
  z-index: 1;
  margin: clamp(16px, 2.6vw, 28px) 0 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: var(--about-text);
}

.page-about .about-facts {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 48px) 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--about-line);
  background: var(--about-line);
}

.page-about .about-facts__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 15px 16px;
  background: var(--k5-bg);
}

.page-about .about-facts__num {
  font-family: var(--k5-mono);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.1;
  color: var(--k5-cyan);
}

.page-about .about-facts__cap {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--k5-mute);
}

/* ---------- 章节与行结构 ---------- */

.page-about .about-chapter {
  position: relative;
  padding: clamp(42px, 6.6vw, 100px) 0;
}

.page-about .about-chapter--tint {
  background: linear-gradient(180deg, rgba(17, 21, 30, 0.72), rgba(7, 9, 14, 0));
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-row {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.page-about .about-row__tag {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-self: start;
  padding: 12px 14px;
  border: 1px solid var(--k5-edge);
  border-left: 2px solid var(--k5-cyan);
  background: linear-gradient(180deg, var(--about-glass), rgba(17, 21, 30, 0.32));
}

.page-about .about-row__num {
  font-family: var(--k5-mono);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.15;
  letter-spacing: 0.02em;
  color: var(--k5-cyan);
}

.page-about .about-row__cap {
  font-family: var(--k5-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--k5-mute);
}

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

.page-about .about-row__title {
  margin: 0 0 clamp(12px, 1.8vw, 20px);
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.32;
  font-weight: 800;
  letter-spacing: -0.008em;
}

.page-about .about-row__body p {
  max-width: 64ch;
  margin: 0 0 1.05em;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.92;
  color: var(--about-text);
  transition: color 0.3s var(--k5-ease);
}

.page-about .about-row__body a {
  color: var(--k5-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 210, 0.35);
  transition: border-color 0.24s var(--k5-ease), color 0.24s var(--k5-ease);
}

.page-about .about-row__body a:hover,
.page-about .about-row__body a:focus-visible {
  color: #7ff5e8;
  border-bottom-color: #7ff5e8;
}

.page-about .about-row:has(.about-row__tag:hover) .about-row__body p {
  color: var(--k5-ink);
}

/* ---------- 图文分栏 ---------- */

.page-about .about-row__split {
  display: grid;
  gap: clamp(22px, 3.2vw, 42px);
}

/* ---------- 图片容器 ---------- */

.page-about .k5-media {
  margin: 0;
}

.page-about .k5-media__frame {
  position: relative;
  display: block;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--k5-edge);
  background: linear-gradient(155deg, var(--k5-fog) 0%, #06080d 68%, #0b1a22 100%);
}

.page-about .k5-media--square .k5-media__frame {
  aspect-ratio: 1 / 1;
}

.page-about .k5-media--wide .k5-media__frame {
  aspect-ratio: 16 / 9;
}

.page-about .k5-media__frame > .k5-media__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  display: block;
}

.page-about .k5-media__tag {
  display: block;
  margin-top: 10px;
  font-family: var(--k5-mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.1em;
  color: var(--k5-mute);
}

.page-about .about-figure--square {
  max-width: 420px;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-about .about-figure--band {
  margin-top: clamp(30px, 4.6vw, 56px);
}

/* ---------- 时间线 ---------- */

.page-about .about-timeline {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 26px);
  padding-bottom: clamp(28px, 4.2vw, 52px);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 18px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--about-line), rgba(255, 255, 255, 0));
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline__item:last-child::before {
  display: none;
}

.page-about .about-timeline__dot {
  width: 13px;
  height: 13px;
  margin-top: 7px;
  border-radius: 50%;
  transition: transform 0.3s var(--k5-ease), box-shadow 0.3s var(--k5-ease);
}

.page-about .about-timeline__dot--home {
  background: var(--k5-home);
  box-shadow: 0 0 0 3px rgba(255, 162, 43, 0.14);
}

.page-about .about-timeline__dot--away {
  background: var(--k5-away);
  box-shadow: 0 0 0 3px rgba(76, 141, 255, 0.14);
}

.page-about .about-timeline__dot--cyan {
  background: var(--k5-cyan);
  box-shadow: 0 0 0 3px rgba(33, 230, 210, 0.14);
}

.page-about .about-timeline__item:hover .about-timeline__dot,
.page-about .about-timeline__item:focus-within .about-timeline__dot {
  transform: scale(1.3);
}

.page-about .about-timeline__year {
  margin: 0 0 6px;
  font-family: var(--k5-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--k5-mute);
}

.page-about .about-timeline__head {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.4;
  font-weight: 700;
}

.page-about .about-timeline__text {
  max-width: 62ch;
  margin: 0 0 12px;
  font-size: clamp(14.5px, 1.5vw, 16px);
  line-height: 1.9;
  color: var(--about-text);
}

.page-about .about-timeline__badge {
  display: inline-block;
  margin: 0;
  padding: 4px 10px;
  border: 1px solid var(--k5-edge);
  font-family: var(--k5-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--k5-mute);
  transition: color 0.26s var(--k5-ease), border-color 0.26s var(--k5-ease), background 0.26s var(--k5-ease);
}

.page-about .about-timeline__item:hover .about-timeline__badge {
  color: var(--k5-cyan);
  border-color: rgba(33, 230, 210, 0.48);
  background: rgba(33, 230, 210, 0.07);
}

/* ---------- 协作方标签 ---------- */

.page-about .about-partners {
  display: grid;
  gap: 12px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partners__item {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  align-items: center;
  gap: 4px 16px;
  padding: 14px 16px;
  border: 1px solid var(--k5-edge);
  background: linear-gradient(120deg, var(--about-glass), rgba(17, 21, 30, 0.28));
  transition: border-color 0.28s var(--k5-ease), background 0.28s var(--k5-ease);
}

.page-about .about-partners__item:hover,
.page-about .about-partners__item:focus-visible {
  border-color: rgba(33, 230, 210, 0.5);
  background: linear-gradient(120deg, rgba(14, 110, 107, 0.28), rgba(17, 21, 30, 0.4));
  outline: none;
}

.page-about .about-partners__count {
  grid-row: span 2;
  font-family: var(--k5-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--k5-cyan);
}

.page-about .about-partners__name {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--k5-ink);
}

.page-about .about-partners__detail {
  grid-column: 2;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-text);
  transition: max-height 0.34s var(--k5-ease), opacity 0.28s var(--k5-ease), margin-top 0.28s var(--k5-ease);
}

.page-about .about-partners__item:hover .about-partners__detail,
.page-about .about-partners__item:focus-visible .about-partners__detail {
  max-height: 140px;
  margin-top: 6px;
  opacity: 1;
}

/* ---------- 赛季回顾榜单 ---------- */

.page-about .about-review {
  margin: clamp(20px, 3vw, 32px) 0 clamp(20px, 3vw, 30px);
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-line);
}

.page-about .about-review__row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--about-line);
  transition: background 0.26s var(--k5-ease);
}

.page-about .about-review__row:hover {
  background: var(--about-glass);
}

.page-about .about-review__idx {
  grid-row: span 2;
  font-family: var(--k5-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--k5-magenta);
}

.page-about .about-review__name {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--k5-ink);
}

.page-about .about-review__desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--k5-mute);
}

/* ---------- 相关栏目条 ---------- */

.page-about .about-next {
  padding: clamp(28px, 4.4vw, 52px) 0 clamp(40px, 6vw, 76px);
  border-top: 1px solid var(--about-line);
}

.page-about .about-next__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--k5-edge);
  font-size: 15px;
  font-weight: 600;
  color: var(--k5-ink);
  text-decoration: none;
  transition: border-color 0.26s var(--k5-ease), background 0.26s var(--k5-ease), color 0.26s var(--k5-ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  border-color: rgba(33, 230, 210, 0.55);
  background: rgba(33, 230, 210, 0.07);
  color: var(--k5-cyan);
  outline: none;
}

.page-about .about-next__arrow {
  font-family: var(--k5-mono);
  font-size: 14px;
  color: var(--k5-mute);
  transition: transform 0.26s var(--k5-ease), color 0.26s var(--k5-ease);
}

.page-about .about-next__link:hover .about-next__arrow {
  transform: translateX(4px);
  color: var(--k5-cyan);
}

/* ---------- 平板及以上 ---------- */

@media (min-width: 900px) {
  .page-about .about-row {
    grid-template-columns: var(--about-tag-w) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 80px);
  }

  .page-about .about-row__tag {
    position: sticky;
    top: clamp(96px, 14vh, 150px);
  }

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

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

@media (min-width: 1040px) {
  .page-about .about-row__split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

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

/* ---------- 窄屏收敛 ---------- */

@media (max-width: 599px) {
  .page-about .about-row__tag {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 10px;
    border-left-width: 1px;
    border-top: 2px solid var(--k5-cyan);
  }

  .page-about .about-row__num {
    font-size: 18px;
  }

  .page-about .about-partners__item {
    grid-template-columns: 44px minmax(0, 1fr);
  }

  .page-about .about-partners__count {
    font-size: 22px;
  }

  .page-about .about-figure--square {
    max-width: 100%;
  }
}

/* 触屏设备无悬停：职责说明直接可见 */
@media (hover: none) {
  .page-about .about-partners__detail {
    max-height: none;
    margin-top: 6px;
    opacity: 1;
  }

  .page-about .about-timeline__badge {
    color: var(--k5-cyan);
    border-color: rgba(33, 230, 210, 0.4);
  }
}

/* ---------- 减少动态偏好 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }

  .page-about .about-hero::before {
    display: none;
  }

  .page-about .about-timeline__item:hover .about-timeline__dot {
    transform: none;
  }
}