.page-about {
  display: block;
  padding-bottom: 64px;
}

.page-about .breadcrumb {
  margin-top: 20px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 22px 0 40px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero .label {
  display: block;
  margin: 0 0 14px;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

.page-about .about-hero h1 {
  margin: 0 0 18px;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 6.4vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.005em;
  color: var(--paper);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: var(--readw);
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-about .about-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 9px 16px;
  background: var(--panel);
  color: var(--paper-dim);
  font-size: 13px;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.page-about .about-facts strong {
  font-family: var(--font-numeric);
  font-size: 19px;
  font-weight: 600;
  color: var(--cyan);
}

.page-about .about-slash {
  display: block;
  width: 96px;
  height: 4px;
  margin-top: 30px;
  background: var(--orange);
  transform: skewX(-12deg);
}

/* ---------- 双栏骨架 ---------- */
.page-about .about-flow {
  margin-top: 4px;
}

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

.page-about .about-body {
  min-width: 0;
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  padding: 38px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-section:last-child {
  border-bottom: 0;
  padding-bottom: 12px;
}

.page-about .about-section .section-head {
  margin-bottom: 4px;
}

.page-about .about-section .section-head__title {
  font-family: var(--font-editorial);
  font-size: clamp(21px, 4.4vw, 30px);
  line-height: 1.35;
  color: var(--paper);
}

.page-about .about-section .section-head__note {
  max-width: var(--readw);
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 四类内容卡 ---------- */
.page-about .about-cards {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-card {
  padding: 20px;
  background: var(--panel);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.page-about .about-card__tag {
  margin: 0 0 10px;
  font-family: var(--font-numeric);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-about .about-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-dim);
}

/* ---------- 生产工序 ---------- */
.page-about .about-produce {
  margin-top: 24px;
}

.page-about .about-steps {
  display: grid;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-step {
  position: relative;
  padding-left: 46px;
}

.page-about .about-step__no {
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-family: var(--font-numeric);
  font-size: 13px;
  color: var(--ink-900);
  background: var(--cyan);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.page-about .about-step h3 {
  margin: 3px 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-dim);
}

.page-about .about-figure {
  margin: 26px 0 0;
  overflow: hidden;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

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

.page-about .about-figure .media__caption,
.page-about .about-cover .media__caption {
  padding: 10px 14px;
  background: var(--ink-900);
  font-size: 13px;
  color: var(--slate);
  border-top: 1px solid var(--line);
}

/* ---------- 核实说明 ---------- */
.page-about .about-verify {
  margin-top: 24px;
  padding: 22px;
  background: var(--panel);
  border-left: 3px solid var(--cyan);
}

.page-about .about-verify__lead {
  margin: 0;
  max-width: var(--readw);
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-about .about-verify__points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 20px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-verify__points li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--slate);
}

.page-about .about-verify__points .mono {
  font-size: 22px;
  font-weight: 600;
  color: var(--cyan-soft);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 0;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-team__item {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__num {
  margin: 0 0 8px;
  font-family: var(--font-numeric);
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-team__item h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-team__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-dim);
}

/* ---------- 版本时间线 ---------- */
.page-about .about-section--versions {
  position: relative;
  overflow: hidden;
}

.page-about .about-versions__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.13;
  pointer-events: none;
}

.page-about .about-versions__bg img {
  width: 100%;
  height: 100%;
}

.page-about .about-section--versions > *:not(.about-versions__bg) {
  position: relative;
  z-index: 1;
}

.page-about .about-timeline {
  margin: 26px 0 0;
  padding: 0 0 0 22px;
  list-style: none;
  border-left: 1px solid var(--line);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 28px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 8px;
  width: 9px;
  height: 9px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-about .about-timeline__year {
  margin: 0 0 6px;
  font-family: var(--font-numeric);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-about .about-timeline__title {
  margin: 0 0 6px;
  font-family: var(--font-editorial);
  font-size: 19px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-timeline__item p {
  margin: 0;
  max-width: var(--readw);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-dim);
}

/* ---------- 覆盖与合作 ---------- */
.page-about .about-cover {
  margin: 24px 0 0;
  overflow: hidden;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .about-coverage {
  margin-top: 24px;
}

.page-about .about-coverage__block + .about-coverage__block {
  margin-top: 26px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.page-about .about-coverage__block h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-coverage__block p {
  margin: 0 0 14px;
  max-width: var(--readw);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-about .about-sports {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-sports li {
  padding: 6px 12px;
  font-size: 13px;
  color: var(--cyan-soft);
  background: var(--panel-2);
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 9px 100%, 0 calc(100% - 9px));
}

/* ---------- 服务地区与响应 ---------- */
.page-about .about-service {
  margin-top: 22px;
}

.page-about .about-service > p {
  margin: 0;
  max-width: var(--readw);
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-about .about-service__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-service__list li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: var(--ink-800);
}

.page-about .about-service__list .mono {
  font-family: var(--font-numeric);
  font-size: 22px;
  font-weight: 600;
  color: var(--cyan);
}

.page-about .about-service__list span:last-child {
  font-size: 13px;
  color: var(--slate);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  margin-top: 32px;
  padding: 22px;
  background: var(--panel);
  border-top: 3px solid var(--orange);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .about-next__lead {
  margin: 0 0 18px;
  max-width: var(--readw);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-next__actions .btn {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-about .about-hero {
    padding: 30px 0 48px;
  }

  .page-about .about-hero__lead {
    font-size: 18px;
  }

  .page-about .about-section {
    padding: 48px 0;
  }

  .page-about .about-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 32px;
  }

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

@media (min-width: 900px) {
  .page-about .about-produce {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }

  .page-about .about-figure {
    margin-top: 0;
  }

  .page-about .about-coverage {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 36px;
  }

  .page-about .about-coverage__block + .about-coverage__block {
    margin-top: 0;
    padding-top: 0;
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-left: 32px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-flow {
    display: grid;
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    margin-top: 8px;
  }

  .page-about .about-index {
    display: block;
    position: sticky;
    top: 96px;
    padding-top: 46px;
  }

  .page-about .about-index__title {
    margin: 0 0 14px;
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--slate);
  }

  .page-about .about-index__list {
    margin: 0;
    padding: 0;
    list-style: none;
    border-left: 1px solid var(--line);
  }

  .page-about .about-index__list a {
    display: flex;
    gap: 10px;
    align-items: baseline;
    margin-left: -1px;
    padding: 9px 0 9px 14px;
    font-size: 14px;
    line-height: 1.5;
    color: var(--paper-dim);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: color var(--dur), border-color var(--dur);
  }

  .page-about .about-index__list a:hover,
  .page-about .about-index__list a:focus-visible {
    color: var(--cyan);
    border-left-color: var(--cyan);
  }

  .page-about .about-index__list .mono {
    font-size: 12px;
    color: var(--slate);
  }

  .page-about .about-body .about-section:first-child {
    padding-top: 46px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-flow {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 72px;
  }

  .page-about .about-section .section-head__title {
    font-size: 31px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__list a {
    transition: none;
  }
}
</main>