/* ============ 关于博业体育 · 页面专属样式 ============ */

.page-about {
  position: relative;
  display: block;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 6px 0 40px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right, rgba(36, 52, 95, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 52, 95, 0.4) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: radial-gradient(125% 85% at 50% 0%, #000 0%, transparent 74%);
  mask-image: radial-gradient(125% 85% at 50% 0%, #000 0%, transparent 74%);
  opacity: 0.55;
}

.page-about .about-hero .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 28px;
}

.page-about .about-hero__band {
  display: grid;
  gap: 32px;
}

.page-about .about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-data);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .about-eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  border-radius: 2px;
  background: var(--orange);
}

.page-about .about-hero h1 {
  margin: 0 0 22px;
  max-width: 15em;
  font-size: clamp(1.9rem, 6vw, 3.3rem);
  font-weight: 800;
  font-style: italic;
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--text);
}

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

.page-about .about-hero__lead:last-of-type {
  margin-bottom: 0;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 章节索引面板 ---------- */

.page-about .about-index {
  position: relative;
  padding: 22px 18px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: linear-gradient(152deg, rgba(22, 34, 74, 0.88), rgba(14, 23, 48, 0.62));
  box-shadow: var(--shadow-1);
}

.page-about .about-index::before,
.page-about .about-index::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--cyan);
  pointer-events: none;
}

.page-about .about-index::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
  border-top-left-radius: var(--radius-m);
}

.page-about .about-index::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
  border-bottom-right-radius: var(--radius-m);
}

.page-about .about-index__title {
  margin: 0 0 14px;
  font-family: var(--font-data);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--mist);
}

.page-about .about-index__list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  border-radius: var(--radius-s);
  font-size: 0.95rem;
  color: var(--text);
  text-decoration: none;
  transition:
    background var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease);
}

.page-about .about-index__list a .mono {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--cyan);
  transition: color var(--t-fast) var(--ease);
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  background: rgba(34, 224, 214, 0.1);
  border-left-color: var(--cyan);
  color: #ffffff;
}

.page-about .about-index__list a:hover .mono,
.page-about .about-index__list a:focus-visible .mono {
  color: var(--orange);
}

/* ---------- 通用章节头 ---------- */

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

.page-about .about-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 26px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-num {
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-about .about-section__head h2 {
  margin: 0;
  font-size: clamp(1.35rem, 4vw, 1.95rem);
  font-weight: 800;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .about-prose p {
  max-width: 68ch;
  margin: 0 0 18px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--muted);
}

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

/* ---------- 01 我们做什么 ---------- */

.page-about .about-what {
  display: grid;
  gap: 28px;
}

.page-about .about-note {
  position: relative;
  padding: 22px 20px;
  border: 1px solid rgba(34, 224, 214, 0.3);
  border-radius: var(--radius-l) var(--radius-s) var(--radius-l) var(--radius-l);
  background: linear-gradient(150deg, rgba(34, 224, 214, 0.14), rgba(255, 122, 41, 0.09));
}

.page-about .about-note__label {
  display: block;
  margin-bottom: 10px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .about-note p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text);
}

/* ---------- 02 团队构成 ---------- */

.page-about .about-team {
  display: grid;
  gap: 32px;
}

.page-about .about-team__intro {
  max-width: 60ch;
  margin: 0 0 6px;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-about .about-role {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  column-gap: 16px;
  padding: 20px 6px;
  border-bottom: 1px dashed var(--line);
  border-radius: var(--radius-s);
  transition: background var(--t-fast) var(--ease);
}

.page-about .about-role:first-child {
  border-top: 1px dashed var(--line);
}

.page-about .about-role:hover {
  background: rgba(34, 224, 214, 0.05);
}

.page-about .about-role__count {
  grid-column: 1;
  grid-row: 1 / span 2;
  align-self: start;
  font-size: 2.05rem;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-role__count small {
  display: block;
  margin-top: 8px;
  font-family: var(--font-body);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1.4;
  color: var(--mist);
}

.page-about .about-role__name {
  grid-column: 2;
  margin: 0 0 6px;
  font-size: 1.04rem;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-role__desc {
  grid-column: 2;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-team__media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--bg-1);
}

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

.page-about .about-team__media figcaption,
.page-about .about-flow__media figcaption,
.page-about .about-story__media figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--secondary, var(--muted));
}

/* ---------- 03 一场比赛的流程 ---------- */

.page-about .about-flow__lead {
  max-width: 62ch;
  margin: 0 0 26px;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-about .about-flow__step {
  position: relative;
  padding: 0 0 26px 30px;
  border-left: 1px solid var(--line);
}

.page-about .about-flow__step::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bg-0);
  border: 2px solid var(--cyan);
  transition:
    background var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease);
}

.page-about .about-flow__step:hover::before {
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(34, 224, 214, 0.18);
}

.page-about .about-flow__step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-flow__stamp {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-about .about-flow__step h3 {
  margin: 8px 0 8px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  transition: color var(--t-fast) var(--ease);
}

.page-about .about-flow__step:hover h3 {
  color: var(--cyan);
}

.page-about .about-flow__step p {
  max-width: 46ch;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-flow__media {
  margin: 36px 0 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--bg-1);
}

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

/* ---------- 04 运营历程 ---------- */

.page-about .about-story__media {
  margin: 0 0 32px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--bg-1);
}

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

.page-about .about-story__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 4px;
}

.page-about .about-story__item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  column-gap: 18px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-story__year {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .about-story__item--live .about-story__year {
  color: var(--orange);
}

.page-about .about-story__body h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-story__body p {
  max-width: 66ch;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 05 数据与合作 ---------- */

.page-about .about-eco {
  display: grid;
  gap: 30px;
}

.page-about .about-eco__stats {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--line);
}

.page-about .about-eco__stat {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  align-items: baseline;
  column-gap: 16px;
  padding: 16px 10px;
  border-bottom: 1px solid var(--line);
  transition: background var(--t-fast) var(--ease);
}

.page-about .about-eco__stat:hover {
  background: rgba(22, 34, 74, 0.55);
}

.page-about .about-eco__num {
  font-size: 1.65rem;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-about .about-eco__label {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 06 为什么选择我们 ---------- */

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

.page-about .about-why__item {
  display: grid;
  gap: 6px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

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

.page-about .about-why__num {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .about-why__item h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  font-style: italic;
  color: var(--text);
}

.page-about .about-why__item p {
  max-width: 68ch;
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 结尾行动区 ---------- */

.page-about .about-cta__box {
  position: relative;
  overflow: hidden;
  padding: 34px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(34, 224, 214, 0.16), transparent 58%),
    radial-gradient(120% 140% at 100% 100%, rgba(255, 122, 41, 0.14), transparent 60%),
    var(--bg-1);
}

.page-about .about-cta__kicker {
  margin: 0 0 12px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .about-cta__box h2 {
  margin: 0 0 14px;
  font-size: clamp(1.3rem, 4vw, 1.85rem);
  font-weight: 800;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .about-cta__text {
  max-width: 62ch;
  margin: 0 0 24px;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--muted);
}

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

/* ---------- 平板与桌面 ---------- */

@media (min-width: 760px) {
  .page-about .about-hero {
    padding-bottom: 56px;
  }

  .page-about .about-eco__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 24px;
  }

  .page-about .about-eco__stat:nth-child(5) {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-about .about-flow__list {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    column-gap: 22px;
    border-top: 1px solid var(--line);
    padding-top: 30px;
  }

  .page-about .about-flow__step {
    padding: 0;
    border-left: 0;
  }

  .page-about .about-flow__step:last-child {
    border-left: 0;
  }

  .page-about .about-flow__step::before {
    left: 0;
    top: -35px;
  }

  .page-about .about-flow__step p {
    max-width: none;
  }

  .page-about .about-what {
    grid-template-columns: minmax(0, 1fr) minmax(250px, 330px);
    column-gap: 56px;
    align-items: start;
  }

  .page-about .about-why__item {
    grid-template-columns: 52px minmax(160px, 250px) minmax(0, 1fr);
    column-gap: 30px;
    align-items: baseline;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__band {
    grid-template-columns: minmax(0, 7fr) minmax(280px, 4fr);
    column-gap: 52px;
    align-items: end;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: 52px;
    align-items: start;
  }

  .page-about .about-eco {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    column-gap: 56px;
    align-items: start;
  }

  .page-about .about-eco__stats {
    grid-template-columns: minmax(0, 1fr);
    column-gap: 0;
    border-top: 1px solid var(--line);
  }

  .page-about .about-eco__stat:nth-child(5) {
    grid-column: auto;
  }

  .page-about .about-cta__box {
    padding: 48px 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__list a,
  .page-about .about-role,
  .page-about .about-eco__stat,
  .page-about .about-flow__step::before,
  .page-about .about-flow__step h3 {
    transition: none;
  }
}

.page-about {
  --secondary: currentColor;
}