/* ===== 品牌与团队 /about/ ===== */
.page-about {
  --about-ink: #223039;
  --about-ink-soft: #5A6672;
  --about-line: rgba(34, 48, 57, 0.16);
  --about-line-soft: rgba(34, 48, 57, 0.09);
  background-color: var(--c-cream);
  color: var(--about-ink);
  font-family: var(--font-sans);
}

/* --- 面包屑 --- */
.page-about .about-crumb {
  padding-block: 18px 6px;
}

.page-about .breadcrumb__link {
  color: var(--about-ink-soft);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.page-about .breadcrumb__link:hover {
  color: var(--c-river);
}

.page-about .breadcrumb__current {
  color: var(--c-river);
  font-weight: 700;
}

/* --- 首屏 --- */
.page-about .about-hero {
  position: relative;
  margin-top: 10px;
  padding: clamp(38px, 5.4vw, 66px) 0 clamp(48px, 6.6vw, 86px);
  background:
    radial-gradient(115% 130% at 92% -4%, rgba(47, 158, 139, 0.26) 0%, rgba(47, 158, 139, 0) 58%),
    radial-gradient(85% 105% at 2% 106%, rgba(228, 177, 90, 0.16) 0%, rgba(228, 177, 90, 0) 60%),
    linear-gradient(158deg, #0A1C2E 0%, #071625 56%, #12304C 100%);
  color: var(--c-white);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg,
    rgba(47, 158, 139, 0) 0%,
    rgba(47, 158, 139, 0.62) 24%,
    rgba(255, 106, 43, 0.5) 64%,
    rgba(255, 106, 43, 0) 100%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 34px;
}

.page-about .about-hero__eyebrow {
  display: inline-block;
  margin: 0 0 16px;
  padding: 5px 12px;
  border: 1px solid rgba(47, 158, 139, 0.5);
  border-radius: 999px;
  background: rgba(47, 158, 139, 0.1);
  color: #8FE3D2;
  font-family: var(--font-num);
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  font-size: clamp(2.1rem, 5.6vw, 3.75rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

.page-about .about-hero__lead {
  margin: 0 0 28px;
  max-width: 36rem;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.85;
  color: var(--c-text-2);
}

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

.page-about .about-hero__figure {
  margin: 0;
  border: 1px solid rgba(214, 210, 198, 0.22);
  border-radius: var(--r-lg);
  background: rgba(18, 48, 76, 0.5);
  box-shadow: 0 26px 60px rgba(3, 10, 18, 0.5);
}

.page-about .about-hero__figure .figure__img {
  aspect-ratio: 14 / 9;
}

.page-about .about-hero__figure .figure__caption {
  padding: 12px 16px 14px;
}

/* --- 通用图片 --- */
.page-about .figure {
  margin: 0;
  border-radius: var(--r-md);
  overflow: hidden;
}

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

.page-about .figure__caption {
  padding: 10px 2px 0;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--c-text-2);
}

.page-about .about-flow .figure__caption {
  color: var(--about-ink-soft);
}

/* --- 正文骨架 --- */
.page-about .about-body {
  padding-block: 52px 84px;
}

.page-about .about-body__grid {
  display: grid;
  gap: 36px;
}

/* --- 左侧章节索引 --- */
.page-about .about-index__label {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-moss);
}

.page-about .about-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin: 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--about-line);
}

.page-about .about-index__link {
  display: block;
  padding: 3px 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--about-ink-soft);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.page-about .about-index__link:hover {
  color: var(--c-river);
}

.page-about .about-index__link[aria-current="location"] {
  color: var(--c-river);
  font-weight: 700;
}

/* --- 内容流 --- */
.page-about .about-flow {
  max-width: var(--measure);
  min-width: 0;
}

.page-about .about-section + .about-section {
  margin-top: 60px;
}

.page-about .about-section__num {
  margin: 0 0 8px;
  font-family: var(--font-num);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  color: var(--c-moss);
}

.page-about .about-section__title {
  margin: 0 0 18px;
  font-size: clamp(1.5rem, 3.4vw, 2.25rem);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--c-river);
}

.page-about .about-section p {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--about-ink-soft);
}

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

/* --- 深色数据面板 --- */
.page-about .about-panel {
  position: relative;
  padding: clamp(24px, 3.6vw, 44px);
  border: 1px solid rgba(214, 210, 198, 0.16);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 120% at 100% 0%, rgba(47, 158, 139, 0.18) 0%, rgba(47, 158, 139, 0) 62%),
    linear-gradient(152deg, var(--c-lift) 0%, var(--c-river) 100%);
  color: var(--c-white);
}

.page-about .about-panel .about-section__num {
  color: var(--c-gold);
}

.page-about .about-panel .about-section__title {
  color: var(--c-white);
}

.page-about .about-panel p {
  color: var(--c-text-2);
}

.page-about .about-panel .figure__caption {
  color: var(--c-text-2);
}

/* --- 岗位分工 --- */
.page-about .about-roles {
  display: grid;
  gap: 16px;
  margin: 24px 0;
  padding: 0;
  list-style: none;
}

.page-about .about-roles__item {
  padding-left: 18px;
  border-left: 2px solid var(--about-line);
}

.page-about .about-roles__tag {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-num);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--c-moss);
}

.page-about .about-roles__item p {
  margin: 0;
  font-size: 0.9375rem;
}

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

/* --- 版本脉络 --- */
.page-about .about-versions {
  margin-top: 26px;
}

.page-about .about-version {
  border-top: 1px solid rgba(214, 210, 198, 0.2);
}

.page-about .about-version:last-child {
  border-bottom: 1px solid rgba(214, 210, 198, 0.2);
}

.page-about .about-version__summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  transition: color 160ms var(--ease);
}

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

.page-about .about-version__summary:hover .about-version__name {
  color: #8FE3D2;
}

.page-about .about-version__tag {
  flex: 0 0 auto;
  min-width: 2.4em;
  font-family: var(--font-num);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-gold);
}

.page-about .about-version__name {
  flex: 1 1 auto;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-white);
}

.page-about .about-version__hint {
  flex: 0 0 auto;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--c-text-2);
}

.page-about .about-version__hint::after {
  content: " ＋";
}

.page-about .about-version[open] .about-version__hint {
  color: var(--c-moss);
}

.page-about .about-version[open] .about-version__hint::after {
  content: " －";
}

.page-about .about-version__body {
  padding-bottom: 20px;
}

.page-about .about-version__body p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--c-text-2);
}

.page-about .about-version__visual {
  margin-top: 30px;
  border-radius: var(--r-md);
}

/* --- 数据带 --- */
.page-about .about-stats {
  display: grid;
  gap: 1px;
  margin: 26px 0;
  padding: 0;
  list-style: none;
  border-radius: var(--r-md);
  overflow: hidden;
  background: rgba(214, 210, 198, 0.22);
}

.page-about .about-stats .stat {
  padding: 20px 18px;
  background: rgba(7, 22, 37, 0.72);
}

.page-about .about-stats .stat__value {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--c-gold);
}

.page-about .about-stats .stat__label {
  display: block;
  margin-top: 6px;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--c-text-2);
}

/* --- 赛季节奏 --- */
.page-about .about-season {
  display: grid;
  gap: 20px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-season__item {
  padding-top: 14px;
  border-top: 4px solid var(--c-mist);
}

.page-about .about-season__item:nth-child(1) {
  border-top-color: rgba(47, 158, 139, 0.3);
}

.page-about .about-season__item:nth-child(2) {
  border-top-color: rgba(47, 158, 139, 0.58);
}

.page-about .about-season__item:nth-child(3) {
  border-top-color: var(--c-moss);
}

.page-about .about-season__item:nth-child(4) {
  border-top-color: var(--c-gold);
}

.page-about .about-season__name {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.4;
  color: var(--c-river);
}

.page-about .about-season__text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--about-ink-soft);
}

/* --- 后续入口 --- */
.page-about .about-next__links {
  display: grid;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-next__link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--about-line-soft);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.66);
  color: inherit;
  text-decoration: none;
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-about .about-next__link:hover {
  border-color: var(--c-moss);
  transform: translateY(-2px);
}

.page-about .about-next__link-body {
  display: block;
  flex: 1 1 auto;
  min-width: 0;
}

.page-about .about-next__link-title {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.4;
  color: var(--c-river);
}

.page-about .about-next__link-text {
  display: block;
  margin-top: 3px;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--about-ink-soft);
}

.page-about .about-next__link-arrow {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: 1.125rem;
  color: var(--c-moss);
}

/* --- 断点 --- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-roles {
    gap: 18px;
  }
}

@media (min-width: 720px) {
  .page-about .about-season {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
    gap: 54px;
    align-items: center;
  }

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

  .page-about .about-season {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-body {
    padding-block: 76px 110px;
  }

  .page-about .about-body__grid {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: 68px;
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: 104px;
  }

  .page-about .about-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-about .about-index__link {
    padding: 5px 0 5px 14px;
    border-left: 2px solid transparent;
    transition: color 160ms var(--ease), border-color 160ms var(--ease);
  }

  .page-about .about-index__link[aria-current="location"] {
    border-left-color: var(--c-orange);
  }

  .page-about .about-section + .about-section {
    margin-top: 72px;
  }
}

@media (min-width: 1280px) {
  .page-about .about-body__grid {
    grid-template-columns: 238px minmax(0, 1fr);
    gap: 84px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-next__link,
  .page-about .about-index__link,
  .page-about .about-version__summary,
  .page-about .breadcrumb__link {
    transition: none;
  }

  .page-about .about-next__link:hover {
    transform: none;
  }
}