/* =========================================================
   品牌档案 /company/  —  页面专属样式（作用域 .page-about）
   ========================================================= */

.page-about {
  --about-rail: 150px;
  --about-gap: 48px;
  background: var(--paper);
  color: var(--graphite);
}

.page-about .about-h2 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.02em;
  font-size: clamp(24px, 4.4vw, 34px);
  line-height: 1.35;
  color: var(--ink);
  margin: 0;
}

.page-about .about-h2--light {
  color: var(--paper);
}

.page-about .about-lede {
  font-size: 17px;
  line-height: 1.9;
  color: var(--gray);
  margin: 16px 0 0;
  max-width: 62ch;
}

.page-about .about-lede--ink {
  color: var(--text-on-ink-dim);
}

.page-about .about-caption {
  font-size: 15px;
  line-height: 1.85;
  color: var(--gray);
  margin: 28px 0 0;
  max-width: 62ch;
}

.page-about .about-prose p {
  font-size: 17px;
  line-height: 1.9;
  margin: 0 0 1em;
  max-width: 68ch;
}

.page-about .about-prose a,
.page-about .about-note a {
  color: var(--ink);
  border-bottom: 1px solid var(--amber);
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease;
}

.page-about .about-prose a:hover,
.page-about .about-note a:hover,
.page-about .about-prose a:focus-visible,
.page-about .about-note a:focus-visible {
  color: var(--amber);
}

/* ---------------- 首屏 ---------------- */

.page-about .about-hero {
  position: relative;
  background: var(--ink);
  color: var(--text-on-ink);
  padding: 26px 0 60px;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--line-dark);
}

.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-on-ink-dim);
}

.page-about .about-crumb a {
  color: var(--text-on-ink-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber-soft);
}

.page-about .about-hero__grid {
  margin-top: 38px;
  display: grid;
  gap: 26px;
}

.page-about .about-hero__aside {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-dark);
}

.page-about .about-hero__code {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--celadon-soft);
}

.page-about .about-hero__verb {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--text-on-ink-dim);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.02em;
  font-size: clamp(29px, 6.4vw, 45px);
  line-height: 1.3;
  color: var(--paper);
  margin: 0;
  max-width: 22ch;
}

.page-about .about-hero__lede {
  margin: 22px 0 0;
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-on-ink);
  max-width: 60ch;
}

.page-about .about-hero__facts {
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-on-ink-dim);
}

.page-about .about-hero__facts span {
  position: relative;
  padding-left: 14px;
}

.page-about .about-hero__facts span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
}

/* ---------------- 通用分区与栅格 ---------------- */

.page-about .about-section {
  padding: 60px 0;
  position: relative;
}

.page-about .about-section--white {
  background: var(--white);
}

.page-about .about-section--ink {
  background: var(--ink);
  color: var(--text-on-ink);
}

.page-about .about-section--ink .about-h2 {
  color: var(--paper);
}

.page-about .about-grid {
  display: grid;
  gap: 22px;
}

.page-about .about-rail {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-light);
}

.page-about .about-rail__num {
  display: inline-block;
  background: var(--ink);
  color: var(--amber-soft);
  font-size: 12px;
  letter-spacing: 0.12em;
  padding: 3px 8px;
  border-radius: 2px;
}

.page-about .about-rail__label {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-about .about-section--ink .about-rail {
  border-bottom-color: var(--line-dark);
}

.page-about .about-section--ink .about-rail__num {
  background: var(--amber);
  color: var(--ink);
}

.page-about .about-section--ink .about-rail__label {
  color: var(--text-on-ink-dim);
}

.page-about .about-head {
  max-width: 64ch;
  margin-bottom: 34px;
}

.page-about .section-index {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--celadon);
}

/* ---------------- 主张三条 ---------------- */

.page-about .about-tenets {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-light);
  border: 1px solid var(--line-light);
}

.page-about .about-tenet {
  background: var(--paper);
  padding: 22px 20px;
  border-left: 3px solid var(--celadon);
  transition: background 160ms ease, border-left-color 160ms ease;
}

.page-about .about-tenet:hover,
.page-about .about-tenet:focus-within {
  background: var(--white);
  border-left-color: var(--amber);
}

.page-about .about-tenet h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-tenet p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--gray);
}

/* ---------------- 发展历程 ---------------- */

.page-about .about-history {
  display: grid;
  gap: 34px;
}

.page-about .about-history__media {
  margin: 0;
}

.page-about .about-history__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line-light);
  background: var(--paper);
}

.page-about .about-history__media figcaption,
.page-about .about-team-media figcaption,
.page-about .about-scale__media figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gray);
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 34px 26px;
  border-left: 1px solid var(--line-light);
}

.page-about .about-timeline__item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 6px;
  width: 11px;
  height: 11px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--celadon);
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus-within::before {
  border-color: var(--amber);
  background: var(--amber-soft);
  transform: scale(1.18);
}

.page-about .about-timeline__year {
  margin: 0 0 4px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--celadon);
}

.page-about .about-timeline__item:hover .about-timeline__year,
.page-about .about-timeline__item:focus-within .about-timeline__year {
  color: var(--amber);
}

.page-about .about-timeline__item h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  color: var(--ink);
}

.page-about .about-timeline__item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--gray);
  max-width: 62ch;
}

.page-about .about-timeline__item--now h3 {
  color: var(--amber);
}

/* ---------------- 团队五条 ---------------- */

.page-about .team-bars {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 3px;
}

.page-about .team-bars__item {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 10px;
  padding: 20px 18px;
  background: var(--ink-2);
  border-top: 3px solid var(--celadon);
  transition: background 160ms ease, border-top-color 160ms ease;
}

.page-about .team-bars__item:hover,
.page-about .team-bars__item:focus-within {
  background: #26345a;
  border-top-color: var(--amber);
}

.page-about .team-bars__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .team-bars__duty {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-on-ink-dim);
}

.page-about .about-team-media {
  margin: 32px 0 0;
}

.page-about .about-team-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line-dark);
}

/* ---------------- 流程 ---------------- */

.page-about .about-flow {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 26px;
}

.page-about .about-flow__step {
  padding-top: 16px;
  border-top: 2px solid var(--celadon);
}

.page-about .about-flow__num {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gray);
}

.page-about .about-flow__step h3 {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--gray);
}

.page-about .about-note {
  margin-top: 34px;
  padding: 22px 20px;
  background: var(--white);
  border: 1px solid var(--line-light);
  border-left: 3px solid var(--amber);
}

.page-about .about-note p {
  margin: 0 0 0.9em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--gray);
  max-width: 68ch;
}

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

/* ---------------- 规模 ---------------- */

.page-about .about-scale {
  margin-top: 32px;
  display: grid;
  gap: 30px;
}

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

.page-about .about-stat {
  background: var(--paper);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background 160ms ease;
}

.page-about .about-stat:hover {
  background: var(--white);
}

.page-about .about-stat__value {
  font-size: clamp(22px, 3.4vw, 28px);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
  border-bottom: 2px solid var(--amber);
  align-self: flex-start;
  padding-bottom: 2px;
}

.page-about .about-stat__label {
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}

.page-about .about-scale__media {
  margin: 0;
}

.page-about .about-scale__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line-light);
}

/* ---------------- 荣誉与合作 ---------------- */

.page-about .about-honors {
  margin-top: 32px;
  display: grid;
  gap: 1px;
  background: var(--line-light);
  border: 1px solid var(--line-light);
}

.page-about .about-honor {
  background: var(--paper);
  padding: 24px 20px;
}

.page-about .about-honor h3 {
  margin: 14px 0 8px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  color: var(--ink);
}

.page-about .about-honor p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--gray);
  max-width: 56ch;
}

/* ---------------- 表达方式 ---------------- */

.page-about .about-manner {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-light);
  border: 1px solid var(--line-light);
}

.page-about .about-manner__item {
  background: var(--paper);
  padding: 22px 20px;
  transition: background 160ms ease;
}

.page-about .about-manner__item:hover {
  background: var(--white);
}

.page-about .about-manner__mark {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--celadon);
}

.page-about .about-manner__item h3 {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  color: var(--ink);
}

.page-about .about-manner__item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--gray);
  max-width: 58ch;
}

/* ---------------- 下一步 ---------------- */

.page-about .about-next {
  background: var(--ink);
  color: var(--text-on-ink);
  padding: 60px 0 68px;
}

.page-about .about-next__index {
  color: var(--celadon-soft);
}

.page-about .about-next__head {
  max-width: 62ch;
}

.page-about .about-next__grid {
  margin-top: 34px;
  display: grid;
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
}

.page-about .about-next__card {
  display: block;
  background: var(--ink-2);
  padding: 26px 22px;
  text-decoration: none;
  color: inherit;
  border-top: 3px solid transparent;
  transition: background 160ms ease, border-top-color 160ms ease;
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  background: #26345a;
  border-top-color: var(--amber);
}

.page-about .about-next__code {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--celadon-soft);
}

.page-about .about-next__card h3 {
  margin: 12px 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  color: var(--paper);
}

.page-about .about-next__card p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-on-ink-dim);
}

.page-about .about-next__go {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--amber-soft);
  border-bottom: 1px solid var(--amber);
  padding-bottom: 2px;
}

/* ---------------- 焦点可见性 ---------------- */

.page-about a:focus-visible,
.page-about .about-next__card:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* ---------------- 平板与桌面 ---------------- */

@media (min-width: 760px) {
  .page-about .about-tenets {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }

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

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 34px 0 76px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: var(--about-gap);
    margin-top: 52px;
  }

  .page-about .about-hero__aside {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    border-bottom: 0;
    border-left: 1px solid var(--line-dark);
    padding: 0 0 0 18px;
  }

  .page-about .about-hero__verb {
    writing-mode: vertical-rl;
  }

  .page-about .about-section {
    padding: 92px 0;
  }

  .page-about .about-next {
    padding: 92px 0 100px;
  }

  .page-about .about-grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: var(--about-gap);
  }

  .page-about .about-rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    border-bottom: 0;
    border-left: 1px solid var(--line-light);
    padding: 0 0 0 16px;
    position: sticky;
    top: 84px;
    align-self: start;
  }

  .page-about .about-section--ink .about-rail {
    border-left-color: var(--line-dark);
  }

  .page-about .about-history {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .team-bars {
    display: flex;
    align-items: stretch;
    gap: 4px;
  }

  .page-about .team-bars__item {
    flex: 1 1 0;
    min-height: 320px;
    padding: 22px 18px;
  }

  .page-about .team-bars__item:nth-child(1) { flex-grow: 1.55; }
  .page-about .team-bars__item:nth-child(2) { flex-grow: 1.15; }
  .page-about .team-bars__item:nth-child(3) { flex-grow: 1.4; }
  .page-about .team-bars__item:nth-child(4) { flex-grow: 0.95; }
  .page-about .team-bars__item:nth-child(5) { flex-grow: 1.25; }

  .page-about .about-scale {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 48px;
    align-items: start;
  }

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

@media (min-width: 1180px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------------- 动效尊重偏好 ---------------- */

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
</main>