/* ===== 品牌档案页专属样式 ===== */
.page-about {
  --about-ghost-alpha: 0.1;
  --about-deco-opacity: 0.16;
  background-color: var(--cream);
  color: var(--ink);
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  overflow-x: clip;
}

/* 面包屑 */
.page-about .about-crumb {
  max-width: var(--warp);
  margin: 0 auto;
  padding: 1rem 1.25rem 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--mid-blue);
  display: flex;
  gap: 0.5rem;
}
.page-about .about-crumb a {
  color: var(--mid-blue);
  text-decoration: none;
}
.page-about .about-crumb a:hover {
  color: var(--accent);
}
.page-about .about-crumb span[aria-current="page"] {
  color: var(--deep-blue);
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  padding: 3rem 1.25rem 240px;
  background: linear-gradient(135deg, var(--cream) 0%, var(--white) 78%);
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 210px;
  background: var(--deep-blue);
}
.page-about .about-hero__ghost {
  display: none;
}
.page-about .about-hero__content {
  position: relative;
  z-index: 1;
  max-width: 680px;
}
.page-about .about-hero__content h1 {
  margin: 0.75rem 0 1.25rem;
  font-family: "Anton", Impact, "Arial Narrow", sans-serif;
  font-size: clamp(2.6rem, 8vw, 5rem);
  line-height: 1.05;
  color: var(--deep-blue);
}
.page-about .about-hero__lead {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--ink);
  max-width: 34em;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}
.page-about .about-hero__meta {
  position: relative;
  z-index: 1;
  margin: 2.25rem 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  color: var(--white);
  padding: 0;
}
.page-about .about-hero__meta div {
  padding: 0.5rem 1rem 0.4rem;
  border-left: 3px solid var(--accent);
}
.page-about .about-hero__meta dt {
  font-size: 12px;
  color: var(--silver);
}
.page-about .about-hero__meta dd {
  margin: 0;
  font-family: "Furore", "Rajdhani", "DIN Alternate", sans-serif;
  font-weight: 700;
  font-size: 1.75rem;
  line-height: 1.1;
}

/* 品牌故事 */
.page-about .about-story {
  padding: 5rem 1.25rem;
  background: var(--cream);
  position: relative;
  overflow: hidden;
}
.page-about .about-story::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 260px;
  height: 260px;
  background: var(--accent);
  opacity: 0.07;
  border-radius: 50%;
  pointer-events: none;
}
.page-about .about-story__layout {
  max-width: var(--warp);
  margin: 0 auto;
  display: grid;
  gap: 2.5rem;
  align-items: center;
  position: relative;
  z-index: 1;
}
.page-about .about-story__content h2 {
  font-family: "Anton", Impact, "Arial Narrow", sans-serif;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.15;
  color: var(--deep-blue);
  margin: 0.75rem 0 1.25rem;
}
.page-about .about-story__lead {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--deep-blue);
  line-height: 1.7;
}
.page-about .about-story__content p:not(.section-label):not(.about-story__lead) {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink);
}
.page-about .about-story__visual {
  position: relative;
  margin: 0;
}
.page-about .about-story__visual::after {
  content: "80+ LEAGUES";
  position: absolute;
  top: -14px;
  right: -6px;
  background: var(--accent);
  color: var(--white);
  font-family: "Anton", Impact, "Arial Narrow", sans-serif;
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.75rem;
  border-radius: 2px;
}
.page-about .about-story__visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-cut);
  box-shadow: 20px 20px 0 0 var(--deep-blue), 26px 26px 0 0 var(--accent);
}

/* 发展里程碑 */
.page-about .about-milestones {
  padding: 5rem 1.25rem;
  background: var(--white);
}
.page-about .about-milestones__layout {
  max-width: var(--warp);
  margin: 0 auto;
  display: grid;
  gap: 2.5rem;
  align-items: center;
}
.page-about .about-milestones__header h2,
.page-about .about-philosophy__header h2,
.page-about .about-trust h2 {
  font-family: "Anton", Impact, "Arial Narrow", sans-serif;
  font-size: clamp(2rem, 6vw, 3.25rem);
  line-height: 1.15;
  color: var(--deep-blue);
  margin: 0.5rem 0 1rem;
}
.page-about .about-milestones__header p:not(.section-label),
.page-about .about-philosophy__header p:not(.section-label),
.page-about .about-trust__content > p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
}
.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 2rem;
  padding-left: 2rem;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 0.75rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--mid-blue), var(--silver));
}
.page-about .about-timeline__item {
  position: relative;
}
.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 0.45rem;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--deep-blue);
  border: 4px solid var(--white);
  box-shadow: 0 0 0 2px var(--accent);
  transition: box-shadow 0.35s var(--ease), background 0.35s var(--ease);
}
.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus-within::before {
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(255, 107, 53, 0.25);
}
.page-about .about-timeline__year {
  display: inline-block;
  font-family: "Anton", Impact, "Arial Narrow", sans-serif;
  font-size: 2.25rem;
  line-height: 1.1;
  color: var(--accent);
  transition: color 0.35s var(--ease);
}
.page-about .about-timeline__item:hover .about-timeline__year {
  color: var(--deep-blue);
}
.page-about .about-timeline__item h3 {
  font-size: 1.25rem;
  color: var(--deep-blue);
  margin: 0.5rem 0 0.25rem;
}
.page-about .about-timeline__item p {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--ink);
}
.page-about .about-milestones__figure {
  margin: 0 auto;
  max-width: 280px;
  position: relative;
}
.page-about .about-milestones__figure::after {
  content: "";
  position: absolute;
  inset: -12px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  z-index: -1;
}
.page-about .about-milestones__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 50%;
  border: 8px solid var(--deep-blue);
}

/* 团队理念 */
.page-about .about-philosophy {
  padding: 5rem 1.25rem;
  background: var(--mist);
  position: relative;
  overflow: hidden;
}
.page-about .about-philosophy::before {
  content: "PHILOSOPHY";
  position: absolute;
  right: -0.5rem;
  top: 1rem;
  font-family: "Anton", Impact, "Arial Narrow", sans-serif;
  font-size: 7rem;
  line-height: 1;
  color: rgba(10, 31, 68, 0.05);
  pointer-events: none;
}
.page-about .about-philosophy__header {
  max-width: var(--warp);
  margin: 0 auto 2.5rem;
  position: relative;
  z-index: 1;
}
.page-about .about-philosophy__grid {
  max-width: var(--warp);
  margin: 0 auto;
  display: grid;
  gap: 1.25rem;
  position: relative;
  z-index: 1;
}
.page-about .about-philosophy__card {
  position: relative;
  padding: 2rem 1.5rem 2.5rem;
  border-radius: var(--radius-cut);
  overflow: hidden;
}
.page-about .about-philosophy__card--primary {
  background: var(--deep-blue);
  color: var(--white);
}
.page-about .about-philosophy__card--accent {
  background: var(--accent);
  color: var(--white);
}
.page-about .about-philosophy__card--paper {
  background: var(--white);
  color: var(--ink);
}
.page-about .about-philosophy__index {
  display: block;
  font-family: "Anton", Impact, "Arial Narrow", sans-serif;
  font-size: 4rem;
  line-height: 1;
  opacity: 0.22;
  margin-bottom: 0.75rem;
}
.page-about .about-philosophy__card h3 {
  font-family: "Anton", Impact, "Arial Narrow", sans-serif;
  font-size: 1.75rem;
  margin: 0 0 0.5rem;
}
.page-about .about-philosophy__card p {
  font-size: 0.95rem;
  line-height: 1.7;
}
.page-about .about-philosophy__card--primary p,
.page-about .about-philosophy__card--accent p {
  color: rgba(255, 255, 255, 0.88);
}

/* 服务数据概览 */
.page-about .about-stats {
  position: relative;
  background: var(--deep-blue);
  color: var(--white);
  padding: 5rem 1.25rem 7rem;
  overflow: hidden;
}
.page-about .about-stats__bg {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.13;
}
.page-about .about-stats__content {
  position: relative;
  z-index: 1;
  max-width: var(--warp);
  margin: 0 auto;
}
.page-about .about-stats__content .section-label {
  color: var(--silver);
}
.page-about .about-stats h2 {
  font-family: "Anton", Impact, "Arial Narrow", sans-serif;
  font-size: clamp(2rem, 6vw, 3.25rem);
  line-height: 1.15;
  color: var(--white);
  margin: 0.5rem 0 1rem;
}
.page-about .about-stats header p:not(.section-label) {
  color: rgba(255, 255, 255, 0.72);
  font-size: 1rem;
  line-height: 1.7;
}
.page-about .about-stats__grid {
  display: grid;
  gap: 2rem;
  margin-top: 2.5rem;
}
.page-about .about-stats__grid > div {
  border-left: 4px solid var(--accent);
  padding-left: 1.25rem;
}
.page-about .about-stats__grid dt {
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  color: var(--silver);
}
.page-about .about-stats__grid dd {
  margin: 0.4rem 0 0.25rem;
  font-family: "Furore", "Rajdhani", "DIN Alternate", sans-serif;
  font-weight: 700;
  font-size: clamp(2.75rem, 9vw, 4.5rem);
  line-height: 1;
  color: var(--white);
}
.page-about .about-stats__grid > div > p {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.66);
}

/* 服务资质 */
.page-about .about-trust {
  padding: 5rem 1.25rem;
  background: var(--cream);
  display: grid;
  gap: 2.5rem;
  max-width: var(--warp);
  margin: 0 auto;
}
.page-about .about-trust__list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.85rem;
}
.page-about .about-trust__list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
}
.page-about .about-trust__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65rem;
  width: 0.85rem;
  height: 2px;
  background: var(--accent);
}
.page-about .about-trust__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}
.page-about .about-trust__note {
  background: var(--white);
  border-radius: var(--radius-cut);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  align-self: start;
}
.page-about .about-trust__note::after {
  content: "20";
  position: absolute;
  right: -1rem;
  bottom: -2rem;
  font-family: "Anton", Impact, "Arial Narrow", sans-serif;
  font-size: 7rem;
  line-height: 1;
  color: var(--accent);
  opacity: 0.1;
  pointer-events: none;
}
.page-about .about-trust__note p {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ===== 桌面端增强 ===== */
@media (min-width: 860px) {
  .page-about .about-stats__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 2.5rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-philosophy__grid {
    grid-template-columns: 1.1fr 0.9fr 1fr;
    align-items: start;
    gap: 1.5rem;
  }
  .page-about .about-philosophy__card--primary {
    margin-top: 2.5rem;
  }
  .page-about .about-philosophy__card--accent {
    margin-top: 0;
  }
  .page-about .about-philosophy__card--paper {
    margin-top: 4rem;
  }
}

@media (min-width: 960px) {
  .page-about .about-trust {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-about .about-milestones__layout {
    grid-template-columns: 1fr 280px;
    gap: 3rem;
  }
  .page-about .about-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    padding-left: 0;
  }
  .page-about .about-timeline::before {
    left: 0;
    right: 0;
    top: 1rem;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--deep-blue) 60%, var(--silver));
  }
  .page-about .about-timeline__item {
    padding-right: 1rem;
  }
  .page-about .about-timeline__item::before {
    left: 0;
    top: 0.4rem;
    width: 1.25rem;
    height: 1.25rem;
  }
  .page-about .about-milestones__figure {
    max-width: 280px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 5rem 2.5rem;
    min-height: 72vh;
  }
  .page-about .about-hero::before {
    top: 0;
    left: auto;
    width: 52%;
    height: 100%;
    clip-path: polygon(30% 0, 100% 0, 100% 100%, 16% 100%);
  }
  .page-about .about-hero__ghost {
    display: block;
    position: absolute;
    right: 10%;
    bottom: 38%;
    font-family: "Anton", Impact, "Arial Narrow", sans-serif;
    font-size: 15rem;
    line-height: 1;
    color: rgba(255, 255, 255, var(--about-ghost-alpha));
    pointer-events: none;
    z-index: 0;
  }
  .page-about .about-hero__content {
    margin-left: 2%;
    max-width: 640px;
  }
  .page-about .about-hero__meta {
    position: absolute;
    right: 6%;
    bottom: 4rem;
    margin: 0;
    width: 260px;
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .page-about .about-story__layout {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
  }
}