/* ============================================================
   品牌中心 /brand/ · 页面专属样式
   作用域限定：.page-about
   ============================================================ */

.page-about {
  --about-rail: 30px;
  --about-card-pad: clamp(20px, 3vw, 28px);
  position: relative;
  isolation: isolate;
  padding-bottom: clamp(48px, 8vw, 88px);
  color: var(--ink);
  font-family: var(--font-body);
}

/* 顶部看台灯光晕 */
.page-about::before {
  content: "";
  position: absolute;
  inset: -90px -10% auto -10%;
  height: 480px;
  background:
    radial-gradient(46% 76% at 22% 0%, rgba(27, 123, 255, .30), transparent 68%),
    radial-gradient(40% 66% at 78% 6%, rgba(34, 224, 200, .17), transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.page-about .ly-container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 20px;
}

.page-about [id] { scroll-margin-top: 142px; }

.page-about .ly-breadcrumb {
  padding-top: 26px;
  font-size: 13px;
  letter-spacing: .04em;
}

.page-about a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------------- 首屏：品牌概览 ---------------- */

.page-about .about-hero {
  padding-top: clamp(18px, 4vw, 44px);
}

.page-about .about-hero-inner {
  display: grid;
  gap: clamp(24px, 4vw, 42px);
  align-items: center;
}

.page-about .hero-copy .ly-pill {
  margin-bottom: 16px;
}

.page-about .about-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 5.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-about .about-hero h1::after {
  content: "";
  display: block;
  width: 96px;
  height: 4px;
  margin-top: 22px;
  border-radius: 999px;
  background: var(--grad);
}

.page-about .hero-lead {
  margin: 0 0 16px;
  max-width: 36em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--ink-2);
}

.page-about .hero-note {
  margin: 0;
  max-width: 34em;
  padding-left: 14px;
  border-left: 2px solid var(--blue);
  font-size: 13.5px;
  line-height: 1.82;
  color: var(--ink-2);
}

.page-about .hero-figures {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: clamp(14px, 2.2vw, 20px);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background-image: var(--grad-soft);
  background-color: var(--panel);
  box-shadow: var(--shadow-panel);
}

.page-about .fig {
  display: grid;
  gap: 3px;
  padding: 14px 16px;
  border: 1px solid rgba(36, 61, 80, .8);
  border-radius: var(--r-lg);
  background: rgba(6, 15, 23, .5);
}

.page-about .fig-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 3.8vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--teal);
}

.page-about .fig-num--hot { color: var(--orange); }

.page-about .fig-label {
  font-size: 12px;
  letter-spacing: .06em;
  line-height: 1.5;
  color: var(--ink-2);
}

/* ---------------- 页内栏目索引 ---------------- */

.page-about .about-index {
  position: sticky;
  top: 68px;
  z-index: 5;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  width: min(calc(var(--maxw) - 40px), calc(100% - 40px));
  margin: clamp(28px, 4vw, 42px) auto 0;
  padding: 7px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(14, 30, 43, .9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .32);
  scrollbar-width: none;
}

.page-about .about-index::-webkit-scrollbar { display: none; }

.page-about .about-index a {
  flex: 0 0 auto;
  padding: 7px 15px;
  border-radius: var(--r-pill);
  font-size: 12.5px;
  letter-spacing: .06em;
  white-space: nowrap;
  color: var(--ink-2);
  text-decoration: none;
  transition: color .18s ease, background-color .18s ease;
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  color: var(--ink);
  background: var(--panel-up);
}

/* ---------------- 章节节奏 ---------------- */

.page-about .ly-section {
  padding-block: clamp(40px, 6vw, 70px);
}

.page-about .ly-section-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .ly-sec-title {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 36px);
  line-height: 1.22;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-about .ly-sec-sub {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-2);
}

/* ---------------- 图片底板 ---------------- */

.page-about .about-shot {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
  overflow: hidden;
  line-height: 0;
}

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

.page-about .about-shot figcaption {
  padding: 11px 16px;
  border-top: 1px solid var(--line);
  background: var(--panel);
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--ink-2);
}

.page-about .about-shot--wide { margin-bottom: clamp(20px, 3vw, 30px); }

.page-about .about-shot--team { margin-bottom: clamp(20px, 3vw, 30px); }

/* ---------------- 版本跳转胶囊 ---------------- */

.page-about .ver-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .ver-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--panel);
  color: var(--ink-2);
  font-size: 12.5px;
  letter-spacing: .06em;
  text-decoration: none;
  transition: color .18s ease, background-color .18s ease, border-color .18s ease, transform .18s ease;
}

.page-about .ver-chip:hover,
.page-about .ver-chip:focus-visible {
  color: var(--ink);
  border-color: var(--teal);
  background: var(--panel-up);
  transform: translateY(-2px);
}

/* ---------------- 纵向时间轴 ---------------- */

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

.page-about .tl-item {
  display: grid;
  grid-template-columns: var(--about-rail) minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 24px);
}

.page-about .tl-mark {
  position: relative;
  display: flex;
  justify-content: center;
}

.page-about .tl-mark::before {
  content: "";
  position: absolute;
  top: 34px;
  bottom: -34px;
  left: 50%;
  width: 2px;
  margin-left: -1px;
  background: linear-gradient(180deg, rgba(34, 224, 200, .7), rgba(27, 123, 255, .1));
}

.page-about .tl-item:last-child .tl-mark::before { display: none; }

.page-about .tl-dot {
  position: relative;
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  margin-top: 30px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 5px rgba(34, 224, 200, .14), 0 0 18px rgba(34, 224, 200, .45);
}

.page-about .tl-card {
  margin-bottom: clamp(16px, 2.4vw, 26px);
  padding: var(--about-card-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
  box-shadow: var(--shadow-panel);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-about .tl-card:hover,
.page-about .tl-card:focus-within {
  transform: translateY(-2px);
  background: var(--panel-up);
  border-color: rgba(34, 224, 200, .42);
  box-shadow: var(--shadow-hover);
}

.page-about .tl-ver {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  background: var(--grad);
  color: #04121A;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
}

.page-about .tl-card h3 {
  margin: 14px 0 9px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2.2vw, 22px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .tl-text {
  margin: 0 0 13px;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-about .tl-points {
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tl-points li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--ink-2);
}

.page-about .tl-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
}

/* 收窄的短注释：负责宽窄交替的节奏 */
.page-about .tl-narrow {
  max-width: 50ch;
  margin: clamp(18px, 3vw, 30px) auto clamp(4px, 1vw, 10px);
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--teal);
  border-radius: var(--r-lg);
  background-image: var(--grad-soft);
  background-color: transparent;
  font-size: 14px;
  line-height: 1.82;
  color: var(--ink-2);
}

/* ---------------- 团队分工 ---------------- */

.page-about .team-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .team-card {
  padding: var(--about-card-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
  transition: transform .18s ease, background-color .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  transform: translateY(-2px);
  background: var(--panel-up);
  border-color: rgba(27, 123, 255, .45);
  box-shadow: var(--shadow-hover);
}

.page-about .team-num {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(34px, 4.4vw, 48px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--teal);
}

.page-about .team-card h3 {
  margin: 14px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.35;
  color: var(--ink);
}

.page-about .team-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--ink-2);
}

.page-about .team-note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  max-width: 66ch;
}

/* ---------------- 赛事覆盖 ---------------- */

.page-about .cover-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
}

.page-about .cover-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 22px;
}

.page-about .cs {
  padding: 14px 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
}

.page-about .cs-num {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 2.9vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--teal);
}

.page-about .cs-label {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  letter-spacing: .05em;
  line-height: 1.5;
  color: var(--ink-2);
}

.page-about .cover-sub {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.35;
  color: var(--ink);
}

.page-about .cover-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  font-size: 13.5px;
}

.page-about .cover-table caption {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-about .cover-table th,
.page-about .cover-table td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  line-height: 1.6;
}

.page-about .cover-table thead th {
  background: var(--panel-up);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--ink-2);
}

.page-about .cover-table tbody td {
  background: var(--panel);
  color: var(--ink);
  transition: background-color .16s ease;
}

.page-about .cover-table tbody tr:last-child td { border-bottom: 0; }

.page-about .cover-table tbody tr:hover td { background: var(--panel-up); }

.page-about .cover-table .num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  color: var(--teal);
  white-space: nowrap;
}

.page-about .cover-note {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.82;
  color: var(--ink-2);
}

.page-about .about-shot--cover { margin: 0; }

/* ---------------- 合作与认可 ---------------- */

.page-about .partner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .partner-card {
  padding: var(--about-card-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
  transition: transform .18s ease, background-color .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.page-about .partner-card:hover,
.page-about .partner-card:focus-within {
  transform: translateY(-2px);
  background: var(--panel-up);
  border-color: rgba(255, 106, 43, .4);
  box-shadow: var(--shadow-hover);
}

.page-about .partner-card--honor {
  background-image: var(--grad-soft);
  background-color: var(--panel);
}

.page-about .p-num {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 3.6vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--orange);
}

.page-about .p-tag {
  display: inline-block;
  padding: 4px 11px;
  border: 1px solid rgba(255, 106, 43, .38);
  border-radius: var(--r-pill);
  background: rgba(255, 106, 43, .13);
  color: var(--orange);
  font-size: 12px;
  letter-spacing: .07em;
}

.page-about .partner-card h3 {
  margin: 14px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .partner-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--ink-2);
}

/* ---------------- 服务与联系 ---------------- */

.page-about .service-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .service-card {
  padding: var(--about-card-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
}

.page-about .service-card--start {
  background-image: var(--grad-soft);
  background-color: var(--panel);
}

.page-about .service-card h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.35;
  color: var(--ink);
}

.page-about .svc-list {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .svc-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-2);
}

.page-about .svc-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 9px;
  height: 2px;
  border-radius: 2px;
  background: var(--teal);
}

.page-about .svc-text {
  margin: 0 0 12px;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.82;
  color: var(--ink-2);
}

.page-about .svc-text:last-child { margin-bottom: 0; }

.page-about .svc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

/* ---------------- 响应式 ---------------- */

@media (min-width: 560px) {
  .page-about .hero-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

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

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

@media (min-width: 860px) {
  .page-about .team-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .hero-figures {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .cover-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
}

@media (max-width: 560px) {
  .page-about .about-index {
    top: 62px;
    width: calc(100% - 28px);
    padding: 6px;
  }

  .page-about .about-index a {
    padding: 6px 12px;
    font-size: 12px;
  }

  .page-about .cover-table {
    font-size: 12.5px;
  }

  .page-about .cover-table th,
  .page-about .cover-table td {
    padding: 9px 10px;
  }

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

  .page-about .tl-item {
    grid-template-columns: 22px minmax(0, 1fr);
    gap: 12px;
  }

  .page-about .svc-actions .ly-btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-card,
  .page-about .team-card,
  .page-about .partner-card,
  .page-about .ver-chip,
  .page-about .cover-table tbody td {
    transition: none;
  }

  .page-about .tl-card:hover,
  .page-about .team-card:hover,
  .page-about .partner-card:hover,
  .page-about .ver-chip:hover {
    transform: none;
  }
}