/* ===== 品牌文化页 · 作用域 .page-about ===== */

.page-about {
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
  overflow-wrap: break-word;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(1.25rem, 4vw, 2rem) 0 clamp(2.5rem, 6vw, 4rem);
  border-bottom: 1px solid var(--tick);
  background:
    radial-gradient(110% 70% at 84% -12%, rgba(123, 77, 255, 0.20), transparent 58%),
    linear-gradient(180deg, rgba(0, 229, 208, 0.055) 0%, transparent 46%);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  top: -34%;
  width: min(520px, 68vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle, rgba(0, 229, 208, 0.13), transparent 66%);
  pointer-events: none;
}

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

.page-about .about-h1 {
  margin: 0.9rem 0 1.1rem;
  max-width: 17ch;
  font-size: clamp(1.95rem, 7.2vw, 3.35rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-lede {
  margin: 0;
  max-width: 36em;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 2.25rem 0 0;
  padding: 1px;
  list-style: none;
  background: var(--tick);
  border-left: 3px solid var(--orange);
}

.page-about .about-figure {
  background: var(--panel);
  padding: 1rem 1rem 1.1rem;
}

.page-about .about-figure-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 5.6vw, 1.85rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-about .about-figure-label {
  display: block;
  margin-top: 0.45rem;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--muted);
}

@media (min-width: 720px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 章节骨架 ---------- */

.page-about .chapter {
  position: relative;
  padding: clamp(2.5rem, 7vw, 4.5rem) 0;
}

.page-about .chapter--tint {
  background: var(--navy);
  border-top: 1px solid var(--tick);
  border-bottom: 1px solid var(--tick);
}

.page-about .chapter-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1rem;
  padding-bottom: 0.85rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--tick);
}

.page-about .chapter-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--orange);
  white-space: nowrap;
}

.page-about .chapter-title {
  margin: 0;
  font-size: clamp(1.32rem, 4.8vw, 2.05rem);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .prose {
  max-width: 36em;
}

.page-about .prose p {
  margin: 0 0 1.05rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--muted);
}

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

.page-about .prose strong {
  font-weight: 700;
  color: var(--paper);
}

/* ---------- 时间轴 ---------- */

.page-about .timeline-figure {
  position: relative;
  margin: 0 0 2rem;
  border: 1px solid var(--tick);
  background: var(--ink);
}

.page-about .timeline-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
}

.page-about .timeline-figure figcaption {
  padding: 0.6rem 0.9rem;
  border-top: 1px solid var(--tick);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .timeline {
  position: relative;
  margin: 0;
  padding-left: 1.9rem;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--violet) 55%, rgba(42, 54, 70, 0.4) 100%);
}

.page-about .tl-item {
  position: relative;
  padding-bottom: 1.9rem;
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -1.9rem;
  top: 0.4rem;
  width: 11px;
  height: 11px;
  background: var(--ink);
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: background-color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-about .tl-item:hover::before,
.page-about .tl-item:focus-within::before {
  background: var(--cyan);
}

.page-about .tl-tag {
  display: inline-block;
  padding: 0.16rem 0.5rem;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-about .tl-title {
  margin: 0.65rem 0 0.45rem;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .tl-text {
  margin: 0;
  max-width: 36em;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .tl-more {
  margin: 0.6rem 0 0;
  padding-left: 0.8rem;
  border-left: 2px solid var(--violet);
  max-width: 34em;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--muted);
}

@media (hover: hover) and (min-width: 900px) {
  .page-about .tl-more {
    max-height: 0;
    margin-top: 0;
    padding-left: 0;
    overflow: hidden;
    opacity: 0;
    border-left-color: transparent;
    transition: max-height 0.38s var(--ease), opacity 0.28s var(--ease),
      padding-left 0.28s var(--ease), margin-top 0.28s var(--ease);
  }

  .page-about .tl-item:hover .tl-more,
  .page-about .tl-item:focus-within .tl-more {
    max-height: 14rem;
    margin-top: 0.6rem;
    padding-left: 0.8rem;
    opacity: 1;
    border-left-color: var(--violet);
  }
}

/* ---------- 赛事覆盖 ---------- */

.page-about .coverage {
  display: grid;
  gap: 1.75rem;
  align-items: start;
}

.page-about .coverage-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--tick);
  border: 1px solid var(--tick);
}

.page-about .cov-item {
  padding: 0.95rem 1rem 1rem 1.1rem;
  background: var(--panel);
  border-left: 3px solid var(--cyan);
  transition: background-color 0.2s var(--ease), border-left-color 0.2s var(--ease);
}

.page-about .cov-item:nth-child(1) { border-left-color: var(--cyan); }
.page-about .cov-item:nth-child(2) { border-left-color: var(--orange); }
.page-about .cov-item:nth-child(3) { border-left-color: var(--violet); }
.page-about .cov-item:nth-child(4) { border-left-color: var(--cyan); }
.page-about .cov-item:nth-child(5) { border-left-color: var(--orange); }
.page-about .cov-item:nth-child(6) { border-left-color: var(--violet); }

.page-about .cov-name {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .cov-desc {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .cov-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--tick);
  background: var(--ink);
}

.page-about .cov-figure::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 44px;
  height: 44px;
  border-right: 3px solid var(--cyan);
  border-bottom: 3px solid var(--cyan);
  pointer-events: none;
}

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

.page-about .cov-figure figcaption {
  padding: 0.6rem 0.9rem;
  border-top: 1px solid var(--tick);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--muted);
}

@media (min-width: 960px) {
  .page-about .coverage {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    gap: 3rem;
  }
}

/* ---------- 团队值班 ---------- */

.page-about .team-figure {
  position: relative;
  margin: 0 0 1.75rem;
  border: 1px solid var(--tick);
  background: var(--ink);
}

.page-about .team-figure::after {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 40px;
  height: 40px;
  border-top: 3px solid var(--orange);
  border-left: 3px solid var(--orange);
  pointer-events: none;
}

.page-about .team-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .team-figure figcaption {
  padding: 0.6rem 0.9rem;
  border-top: 1px solid var(--tick);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.page-about .shift {
  display: grid;
  gap: 1.5rem;
  align-items: center;
  margin-top: 2rem;
  padding-top: 1.75rem;
  border-top: 1px dashed var(--tick);
}

.page-about .shift-clock {
  position: relative;
  width: 168px;
  height: 168px;
  margin-inline: auto;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: conic-gradient(
    var(--teal-deep) 0deg 55deg,
    var(--orange) 55deg 105deg,
    var(--teal-deep) 105deg 200deg,
    var(--violet) 200deg 248deg,
    var(--teal-deep) 248deg 312deg,
    var(--orange) 312deg 360deg
  );
  box-shadow: 0 0 0 1px var(--tick);
}

.page-about .shift-clock::after {
  content: "";
  position: absolute;
  inset: 22%;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--tick);
}

.page-about .shift-clock-label {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  line-height: 1.65;
  text-align: center;
  color: var(--paper);
}

.page-about .shift-copy p {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

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

.page-about .shift-line {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
}

.page-about .shift-dot {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 0.55rem;
  transform: rotate(45deg);
}

.page-about .shift-dot--peak { background: var(--orange); }
.page-about .shift-dot--calm { background: var(--cyan); }
.page-about .shift-dot--violet { background: var(--violet); }

@media (min-width: 720px) {
  .page-about .shift {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 2.25rem;
  }

  .page-about .shift-clock {
    margin-inline: 0;
  }
}

/* ---------- 统计维度 ---------- */

.page-about .dims {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  border-top: 1px solid var(--tick);
}

.page-about .dim {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  column-gap: 1rem;
  padding: 0.9rem 0 0.95rem;
  border-bottom: 1px solid var(--tick);
  transition: background-color 0.2s var(--ease);
}

.page-about .dim:hover {
  background: rgba(22, 30, 42, 0.6);
}

.page-about .dim-code {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--violet);
  padding-top: 0.15rem;
}

.page-about .dim-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--paper);
}

.page-about .dim-desc {
  margin-top: 0.3rem;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--muted);
}

@media (min-width: 860px) {
  .page-about .dims {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 3rem;
  }
}

/* ---------- 认证与合作 ---------- */

.page-about .trust-grid {
  display: grid;
  gap: 2rem 1rem;
  margin-top: 2.5rem;
}

.page-about .trust-card {
  position: relative;
  padding: 1.6rem 1.15rem 1.25rem;
  background: var(--panel);
  border: 1px solid var(--tick);
  transition: border-color 0.2s var(--ease);
}

.page-about .trust-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 36px;
  height: 4px;
  background: var(--cyan);
}

.page-about .trust-card:hover {
  border-color: var(--cyan);
}

.page-about .trust-tag {
  position: absolute;
  top: -0.72rem;
  left: 1rem;
  padding: 0.14rem 0.5rem;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.page-about .trust-title {
  margin: 0.35rem 0 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .trust-text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 820px) {
  .page-about .trust-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.75rem;
  }
}

/* ---------- 结尾行动 ---------- */

.page-about .closing {
  position: relative;
  padding: clamp(2.25rem, 6vw, 3.5rem) 0;
  border-top: 1px solid var(--tick);
  background:
    radial-gradient(90% 150% at 10% 50%, rgba(123, 77, 255, 0.24), transparent 62%),
    radial-gradient(70% 120% at 92% 80%, rgba(0, 229, 208, 0.12), transparent 60%),
    var(--navy);
  overflow: hidden;
}

.page-about .closing-inner {
  display: grid;
  gap: 1.5rem;
  align-items: center;
}

.page-about .closing-title {
  margin: 0 0 0.6rem;
  font-size: clamp(1.3rem, 4.4vw, 1.85rem);
  font-weight: 900;
  line-height: 1.26;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .closing-text {
  margin: 0;
  max-width: 38em;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@media (min-width: 860px) {
  .page-about .closing-inner {
    grid-template-columns: minmax(0, 1.3fr) auto;
    gap: 2.5rem;
  }
}

/* ---------- 渐显 ---------- */

.page-about [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

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