.page-about {
  --about-rule: rgba(201, 214, 194, .85);
  --about-body: #333b2c;
  background: var(--snow);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-about .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: clamp(14px, 3vw, 24px);
  padding-bottom: 4px;
}

/* ---------- 首屏横幅 ---------- */
.page-about .culture-hero {
  position: relative;
  overflow: hidden;
  margin-top: 10px;
  padding: clamp(30px, 5vw, 58px) 0 clamp(32px, 5.5vw, 64px);
  background: linear-gradient(168deg, var(--green-night) 0%, var(--green-deep) 62%, #17501f 100%);
  color: var(--snow);
}

.page-about .culture-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--turf-light);
  pointer-events: none;
}

.page-about .culture-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 84% 10%, rgba(242, 193, 78, .2), transparent 56%),
    radial-gradient(circle at 4% 96%, rgba(192, 57, 43, .18), transparent 50%);
  pointer-events: none;
}

.page-about .culture-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .culture-hero__eyebrow {
  display: inline-block;
  margin: 0 0 20px;
  padding: 5px 15px;
  border: 1px solid rgba(242, 193, 78, .55);
  border-radius: var(--radius-pill);
  background: rgba(20, 24, 15, .3);
  color: var(--amber);
  font-size: 13px;
  letter-spacing: .1em;
}

.page-about .culture-hero__title {
  margin: 0 0 22px;
  font-size: clamp(31px, 6.4vw, 62px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: .03em;
  color: var(--snow);
}

.page-about .culture-hero__banner {
  display: inline-block;
  margin-bottom: .1em;
  padding: .05em .22em .11em;
  background: linear-gradient(102deg, var(--gold) 0%, #e0c469 100%);
  color: var(--green-night);
  clip-path: polygon(0 0, 100% 0, calc(100% - 16px) 100%, 0 100%);
  transform: rotate(-1.1deg);
}

.page-about .culture-hero__banner--second {
  background: linear-gradient(102deg, var(--snow) 0%, #e4e4da 100%);
  transform: rotate(.9deg);
}

.page-about .culture-hero__lede {
  max-width: 36em;
  margin: 0 0 26px;
  color: rgba(245, 245, 240, .87);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.75;
}

.page-about .hero-readout {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 34px;
  padding-top: 20px;
  border-top: 1px solid rgba(245, 245, 240, .2);
}

.page-about .hero-readout__item {
  display: flex;
  align-items: baseline;
  gap: 9px;
}

.page-about .hero-readout__num {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--amber);
}

.page-about .hero-readout__label {
  font-size: 14px;
  color: rgba(245, 245, 240, .78);
}

/* ---------- 章节索引条 ---------- */
.page-about .chapter-index {
  background: #ffffff;
  border-bottom: 1px solid var(--mist);
}

.page-about .chapter-index__list {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 10px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .chapter-index__list li {
  flex: 0 0 auto;
}

.page-about .chapter-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 15px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  color: var(--gravel);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-about .chapter-index__list a:hover,
.page-about .chapter-index__list a:focus-visible {
  border-color: var(--mist);
  background: var(--snow);
  color: var(--green-deep);
}

.page-about .chapter-index__list .num {
  font-size: 12px;
  font-weight: 700;
  color: var(--gold);
}

/* ---------- 编号章节骨架 ---------- */
.page-about .stand-chapter {
  padding: clamp(38px, 6vw, 72px) 0 0;
  scroll-margin-top: 88px;
}

.page-about .stand-chapter--last {
  padding-bottom: clamp(44px, 7vw, 84px);
}

.page-about .stand-chapter__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-about .stand-chapter__num {
  display: block;
  font-size: clamp(40px, 9vw, 82px);
  font-weight: 900;
  line-height: .9;
  letter-spacing: .02em;
  color: var(--gold);
}

.page-about .stand-chapter__title {
  margin: 4px 0 16px;
  font-size: clamp(23px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: .02em;
  color: var(--green-night);
}

.page-about .stand-chapter__content p {
  max-width: 34em;
  margin: 0 0 1.2em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--about-body);
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  margin: 0 0 clamp(24px, 4vw, 42px);
}

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

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--gravel);
}

.page-about .about-figure--side {
  margin-bottom: 0;
}

/* ---------- 纵向时间轴 ---------- */
.page-about .road-timeline {
  position: relative;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0 0 0 24px;
  list-style: none;
  border-left: 1px solid var(--about-rule);
}

.page-about .road-timeline__item {
  position: relative;
  padding-bottom: clamp(22px, 3vw, 32px);
}

.page-about .road-timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .road-timeline__dot {
  position: absolute;
  top: 5px;
  left: -31px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--red-stand);
  box-shadow: 0 0 0 4px var(--snow);
}

.page-about .road-timeline__card {
  padding: 16px 18px;
  background: #ffffff;
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  transition: border-color .2s ease, box-shadow .2s ease;
}

.page-about .road-timeline__item:hover .road-timeline__card,
.page-about .road-timeline__item:focus-within .road-timeline__card {
  border-color: var(--green-turf);
  box-shadow: var(--shadow-2);
}

.page-about .road-timeline__phase {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 11px;
  background: var(--green-deep);
  color: var(--snow);
  font-size: 12px;
  letter-spacing: .09em;
  border-radius: var(--radius-s);
}

.page-about .road-timeline__title {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.2vw, 20px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--green-night);
}

.page-about .road-timeline__text {
  max-width: 36em;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-body);
}

.page-about .road-timeline__more {
  max-width: 36em;
  margin: 10px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--about-rule);
  font-size: 14px;
  line-height: 1.7;
  color: var(--gravel);
}

/* ---------- 跟队需求清单 ---------- */
.page-about .need-list {
  display: grid;
  gap: 14px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .need-list__item {
  padding: 18px 20px;
  background: #ffffff;
  border: 1px solid var(--mist);
  border-left: 3px solid var(--green-turf);
  border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: var(--shadow-1);
  transition: border-left-color .2s ease, box-shadow .2s ease;
}

.page-about .need-list__item:hover {
  border-left-color: var(--gold);
  box-shadow: var(--shadow-2);
}

.page-about .need-list__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--green-night);
}

.page-about .need-list__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--gravel);
}

.page-about .need-cta {
  margin: clamp(18px, 2.5vw, 26px) 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--about-body);
}

/* ---------- 看台日常 ---------- */
.page-about .daily-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-about .daily-note {
  padding: 18px 20px;
  background: var(--snow);
  border-top: 3px solid var(--gold);
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: var(--shadow-1);
}

.page-about .daily-note__tag {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--red-stand);
}

.page-about .daily-note__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--about-body);
}

.page-about .daily-tail {
  max-width: 40em;
  margin: clamp(18px, 2.5vw, 26px) 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gravel);
}

/* ---------- 战报流程 ---------- */
.page-about .press-steps {
  margin: 20px 0 22px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-about .press-steps__item {
  display: flex;
  gap: 14px;
  padding: 16px 18px;
  background: var(--snow);
  border: 1px solid var(--mist);
  border-radius: var(--radius);
}

.page-about .press-steps__idx {
  flex: 0 0 auto;
  font-size: 26px;
  font-weight: 800;
  line-height: 1;
  color: var(--gold);
}

.page-about .press-steps__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--green-night);
}

.page-about .press-steps__text {
  margin: 0 !important;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gravel);
}

.page-about .press-cta {
  margin: clamp(18px, 2.6vw, 28px) 0 0;
}

/* ---------- 数据卡 ---------- */
.page-about .figure-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .figure-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 20px 18px;
  background: var(--snow);
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  transition: border-color .22s ease, box-shadow .22s ease, transform .22s ease;
}

.page-about .figure-card:hover {
  border-color: var(--gold);
  box-shadow: var(--shadow-2);
  transform: translateY(-2px);
}

.page-about .figure-card__num {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: .01em;
  color: var(--green-deep);
}

.page-about .figure-card__label {
  font-size: 14px;
  font-weight: 700;
  color: var(--green-night);
}

.page-about .figure-card__note {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--gravel);
}

/* ---------- 合作 ---------- */
.page-about .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-about .partner-card {
  padding: 20px 22px;
  background: linear-gradient(160deg, #ffffff 0%, var(--snow) 100%);
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  transition: border-color .22s ease, box-shadow .22s ease;
}

.page-about .partner-card:hover {
  border-color: var(--green-turf);
  box-shadow: var(--shadow-2);
}

.page-about .partner-card__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--green-night);
}

.page-about .partner-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--gravel);
}

.page-about .together-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin: clamp(22px, 3vw, 34px) 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--about-body);
}

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

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

@media (min-width: 880px) {
  .page-about .stand-chapter__grid {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 34px;
  }

  .page-about .stand-chapter__marker {
    padding-left: 22px;
    border-left: 1px solid var(--about-rule);
  }

  .page-about .stand-chapter__title {
    margin-top: 0;
  }

  .page-about .road-timeline {
    margin-left: 22px;
    padding-left: 34px;
  }

  .page-about .road-timeline__dot {
    left: -41px;
  }

  .page-about .need-list,
  .page-about .figure-grid,
  .page-about .partner-grid {
    margin-left: 22px;
  }

  .page-about .daily-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-left: 22px;
  }

  .page-about .daily-tail,
  .page-about .together-cta,
  .page-about .need-cta,
  .page-about .press-cta {
    margin-left: 22px;
  }

  .page-about .stand-chapter__grid--split {
    grid-template-columns: 148px minmax(0, 1fr) minmax(0, 300px);
    gap: 34px;
  }

  .page-about .about-figure--side {
    grid-column: 3;
    grid-row: 1 / span 2;
    align-self: start;
    position: sticky;
    top: 90px;
  }
}

@media (min-width: 1024px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .figure-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 479px) {
  .page-about .hero-readout {
    gap: 12px 20px;
  }

  .page-about .hero-readout__item {
    flex-direction: column;
    gap: 2px;
  }

  .page-about .culture-hero__banner {
    clip-path: none;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .figure-card,
  .page-about .need-list__item,
  .page-about .road-timeline__card,
  .page-about .partner-card {
    transition: none;
  }

  .page-about .figure-card:hover {
    transform: none;
  }
}