/* ================= 品牌概况页 ================= */
.page-about {
  --pa-rail: 190px;
  --pa-radius: 22px;
  display: block;
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-about .breadcrumb {
  padding-top: 22px;
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(34px, 6vw, 74px) 0 clamp(34px, 5vw, 62px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -34%;
  right: -18%;
  width: min(760px, 122vw);
  height: min(560px, 84vw);
  background:
    radial-gradient(56% 62% at 70% 32%, rgba(122, 77, 255, 0.46), transparent 70%),
    radial-gradient(50% 56% at 24% 78%, rgba(255, 122, 61, 0.26), transparent 72%);
  transform: rotate(-8deg);
  pointer-events: none;
}

.page-about .about-hero__inner {
  display: grid;
  gap: 16px;
}

.page-about .about-hero__title {
  margin: 0;
  max-width: 17ch;
  font-size: clamp(28px, 6.2vw, 56px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--mist);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(244, 246, 255, 0.82);
}

.page-about .about-hero__stats {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  max-width: 760px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--pa-radius);
  overflow: hidden;
}

.page-about .about-stat {
  display: grid;
  gap: 7px;
  padding: 16px 18px;
  background: rgba(20, 27, 60, 0.78);
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--amber);
}

.page-about .about-stat__label {
  font-size: 12.5px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--steel);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-shell {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(26px, 4vw, 48px);
}

.page-about .about-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--steel);
}

.page-about .about-rail__list {
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .about-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--steel);
  transition: color 0.28s var(--ease), border-color 0.28s var(--ease), background-color 0.28s var(--ease);
}

.page-about .about-rail__link:hover {
  color: var(--mist);
  border-color: var(--line-strong);
}

.page-about .about-rail__link.is-active {
  color: var(--mist);
  border-color: var(--line-strong);
  background: rgba(122, 77, 255, 0.16);
}

.page-about .about-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--neon-violet);
}

.page-about .about-flow {
  display: grid;
  gap: clamp(52px, 8vw, 104px);
  min-width: 0;
}

/* ---------- 章节通用 ---------- */
.page-about .about-sec {
  min-width: 0;
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-about .about-sec__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--neon-violet);
}

.page-about .about-sec__title {
  margin: 0;
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-about .about-sec__lede {
  margin: 14px 0 0;
  max-width: 66ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: rgba(244, 246, 255, 0.78);
}

.page-about .about-sec__head::after {
  content: "";
  display: block;
  margin-top: 22px;
  height: 1px;
  background: linear-gradient(90deg, var(--line-strong), transparent 74%);
}

/* ---------- 01 起步与成长 ---------- */
.page-about .about-split {
  margin-top: 30px;
  display: grid;
  gap: 30px;
}

.page-about .about-tl {
  position: relative;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
  display: grid;
  gap: 26px;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--neon-violet), rgba(255, 122, 61, 0.35), rgba(122, 77, 255, 0.12));
}

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

.page-about .about-tl__dot {
  position: absolute;
  left: -26px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink-navy-deep);
  border: 2px solid var(--neon-violet);
  box-shadow: 0 0 0 4px rgba(122, 77, 255, 0.14);
}

.page-about .about-tl__stage {
  margin: 0 0 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-about .about-tl__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .about-tl__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 246, 255, 0.68);
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--pa-radius);
  overflow: hidden;
  background: var(--ink-navy-soft);
}

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

.page-about .about-figure--tall img {
  aspect-ratio: 3 / 4;
}

.page-about .about-figure--wide img {
  aspect-ratio: 1100 / 720;
}

.page-about .about-figure figcaption {
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--steel);
  border-top: 1px solid var(--line-soft);
}

.page-about .about-figure--stack {
  margin-top: 28px;
}

/* ---------- 02 场馆分区 ---------- */
.page-about .about-plan {
  margin: 30px 0 0;
  padding: clamp(14px, 2.4vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--pa-radius);
  background:
    radial-gradient(72% 92% at 84% 10%, rgba(122, 77, 255, 0.18), transparent 70%),
    var(--ink-navy-soft);
}

.page-about .about-plan__scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-plan__scroll svg {
  display: block;
  width: 100%;
  min-width: 540px;
  height: auto;
}

.page-about .about-plan__cell rect {
  fill: rgba(122, 77, 255, 0.1);
  stroke: rgba(169, 139, 255, 0.38);
  stroke-width: 1.5;
  transition: fill 0.3s var(--ease), stroke 0.3s var(--ease);
}

.page-about .about-plan__cell:hover rect {
  fill: rgba(122, 77, 255, 0.28);
  stroke: var(--amber);
}

.page-about .about-plan__cell text {
  fill: rgba(244, 246, 255, 0.92);
  font-family: var(--font-sans);
  font-size: 24px;
  font-weight: 600;
}

.page-about .about-plan__cell .about-plan__idx {
  fill: var(--neon-violet);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 3px;
}

.page-about .about-plan figcaption {
  margin-top: 14px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--steel);
}

.page-about .about-zones {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--pa-radius);
  overflow: hidden;
}

.page-about .about-zone {
  display: grid;
  align-content: start;
  gap: 6px;
  padding: 20px 20px 22px;
  background: var(--ink-navy-soft);
}

.page-about .about-zone__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--neon-violet);
}

.page-about .about-zone__name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .about-zone__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: rgba(244, 246, 255, 0.66);
}

/* ---------- 03 团队分工 ---------- */
.page-about .about-roles {
  margin: 30px 0 0;
  display: grid;
  gap: 16px;
}

.page-about .about-role {
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--pa-radius);
  background:
    linear-gradient(180deg, rgba(122, 77, 255, 0.09), transparent 62%),
    var(--ink-navy-soft);
  transition: transform 0.32s var(--ease), border-color 0.32s var(--ease);
}

.page-about .about-role:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}

.page-about .about-role__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--neon-violet);
}

.page-about .about-role__name {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .about-role__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: rgba(244, 246, 255, 0.72);
}

.page-about .about-role__meta {
  margin: 6px 0 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

/* ---------- 04 合作关系 ---------- */
.page-about .about-partners {
  margin: 30px 0 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--pa-radius);
  overflow: hidden;
}

.page-about .about-partner {
  display: grid;
  align-content: start;
  gap: 9px;
  padding: 22px;
  background: var(--ink-navy-soft);
}

.page-about .about-partner__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-about .about-partner__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: rgba(244, 246, 255, 0.72);
}

/* ---------- 05 常来的理由 ---------- */
.page-about .about-why {
  margin: 30px 0 0;
  display: grid;
  gap: 22px;
}

.page-about .about-why__item {
  position: relative;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-about .about-why__item::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 46px;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-violet), var(--warm-orange));
}

.page-about .about-why__item h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .about-why__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(244, 246, 255, 0.7);
}

/* ---------- 行动区 ---------- */
.page-about .about-cta {
  margin-top: clamp(52px, 8vw, 96px);
}

.page-about .about-cta__inner {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 52px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-l);
  background:
    radial-gradient(72% 122% at 88% 6%, rgba(255, 122, 61, 0.22), transparent 68%),
    radial-gradient(82% 132% at 4% 96%, rgba(122, 77, 255, 0.32), transparent 70%),
    var(--ink-navy-soft);
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.26;
  font-weight: 800;
  color: var(--mist);
}

.page-about .about-cta__text {
  margin: 0 0 22px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 246, 255, 0.76);
}

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

/* ================= 响应式 ================= */
@media (min-width: 720px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: clamp(28px, 4vw, 48px);
    align-items: start;
  }

  .page-about .about-why {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-shell {
    grid-template-columns: var(--pa-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    align-self: start;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-rail__link {
    width: 100%;
    padding: 11px 0 11px 16px;
    border: 0;
    border-left: 2px solid var(--line-soft);
    border-radius: 0;
    font-size: 14px;
    background: none;
  }

  .page-about .about-rail__link:hover {
    border-left-color: var(--line-strong);
  }

  .page-about .about-rail__link.is-active {
    border-left-color: var(--neon-violet);
    background: linear-gradient(90deg, rgba(122, 77, 255, 0.18), transparent 78%);
  }
}

@media (min-width: 1100px) {
  .page-about .about-zones {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-rail__link,
  .page-about .about-plan__cell rect {
    transition: none;
  }

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