/* ===== 品牌档案页专属样式 ===== */
.page-about {
  --about-accent: #FF5A36;
  --about-surface: #1B1F24;
  --about-grid-size: 40px;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

.page-about a {
  color: inherit;
}

/* ---------- Hero 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 40px 16px 56px;
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / var(--about-grid-size) var(--about-grid-size),
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / var(--about-grid-size) var(--about-grid-size),
    var(--bg);
}

.page-about .about-hero::after {
  content: "08";
  position: absolute;
  right: 2%;
  top: 36px;
  font-family: var(--font-display);
  font-size: clamp(140px, 24vw, 340px);
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px rgba(242, 233, 219, 0.08);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
}

.page-about .about-breadcrumb {
  margin-bottom: 32px;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

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

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-size: clamp(40px, 8vw, 80px);
  line-height: 1.02;
  margin: 0 0 8px;
  letter-spacing: 0.01em;
}

.page-about .about-hero__lead {
  font-size: clamp(17px, 3vw, 24px);
  color: var(--ink-dim);
  margin: 0 0 20px;
  font-weight: 500;
}

.page-about .about-hero__desc {
  max-width: 640px;
  color: var(--ink-dim);
  margin: 0 0 28px;
  font-size: 16px;
}

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

.page-about .about-hero__btn {
  text-decoration: none;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 0;
}

.page-about .about-hero-stat {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 18px 16px;
  transition: border-color 0.16s var(--ease-out), transform 0.16s var(--ease-out);
}

.page-about .about-hero-stat:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.page-about .about-hero-stat__label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}

.page-about .about-hero-stat__value {
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1;
  color: var(--ink);
}

/* ---------- 页内目录 About TOC ---------- */
.page-about .about-toc {
  background: var(--surface);
  border: 1px solid var(--line);
  margin: 24px 16px;
  padding: 16px;
}

.page-about .about-toc__label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 12px;
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.page-about .about-toc__link {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--ink-dim);
  text-decoration: none;
  border-left: 2px solid var(--line);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link[aria-current="true"] {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(255, 90, 54, 0.06);
}

.page-about .about-toc__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--live);
}

/* ---------- 主内容区 ---------- */
.page-about .about-main {
  padding: 0 16px 64px;
}

.page-about .about-section {
  margin-bottom: 72px;
}

.page-about .about-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
  margin-bottom: 24px;
}

.page-about .about-section__index {
  font-family: var(--font-display);
  font-size: 42px;
  line-height: 1;
  color: var(--accent);
  min-width: 58px;
}

.page-about .about-section__title {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 40px);
  margin: 0;
  letter-spacing: 0.02em;
}

.page-about .about-section__lede {
  font-size: clamp(17px, 2.6vw, 22px);
  color: var(--ink);
  font-weight: 500;
  margin: 0 0 12px;
}

.page-about .about-section__body {
  color: var(--ink-dim);
  max-width: 720px;
  margin-bottom: 28px;
}

.page-about .about-section__body p + p {
  margin-top: 8px;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  margin: 36px 0 40px;
  padding-left: 24px;
  border-left: 1px solid var(--line);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 36px 24px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 4px;
  width: 11px;
  height: 11px;
  background: var(--accent);
}

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  display: block;
  margin-bottom: 4px;
  letter-spacing: 0.06em;
}

.page-about .about-timeline__title {
  font-size: 18px;
  margin: 0 0 6px;
  color: var(--ink);
}

.page-about .about-timeline__text {
  font-size: 15px;
  color: var(--ink-dim);
  margin: 0;
  max-width: 560px;
}

.page-about .about-timeline__text a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .about-timeline__text a:hover {
  border-bottom-color: var(--accent);
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  margin: 32px 0;
}

.page-about .about-figure img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--line);
  background: var(--surface);
}

.page-about .about-figure--wide {
  max-width: none;
}

/* ---------- 数据规模数字墙 ---------- */
.page-about .about-data-wall {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 24px 0 16px;
}

.page-about .about-data-card {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 0.16s var(--ease-out), transform 0.16s var(--ease-out);
}

.page-about .about-data-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px) scale(1.02);
}

.page-about .about-data-card__value {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1;
  color: var(--ink);
}

.page-about .about-data-card__label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.page-about .about-data-note {
  font-size: 14px;
  color: var(--muted);
  border-left: 3px solid var(--live);
  padding: 12px 16px;
  background: var(--surface);
  margin: 16px 0 24px;
}

/* ---------- 产品版图 ---------- */
.page-about .about-products-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 24px 0;
}

.page-about .about-product {
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  padding: 24px;
  transition: transform 0.16s var(--ease-out), border-color 0.16s var(--ease-out);
}

.page-about .about-product--classic {
  border-top-color: var(--muted);
}

.page-about .about-product:hover {
  transform: translateY(-3px);
  border-color: var(--ink-dim);
}

.page-about .about-product__name {
  font-family: var(--font-display);
  font-size: 28px;
  margin: 10px 0 10px;
  color: var(--ink);
}

.page-about .about-product__desc {
  font-size: 15px;
  color: var(--ink-dim);
  margin-bottom: 16px;
}

.page-about .about-product__specs {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-product__specs li {
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-dim);
}

.page-about .about-product__link {
  text-decoration: none;
  display: inline-block;
}

/* ---------- 服务边界 ---------- */
.page-about .about-service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 24px 0;
}

.page-about .about-service-card {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 24px;
}

.page-about .about-service-card__title {
  font-size: 18px;
  margin: 0 0 12px;
  color: var(--accent);
}

.page-about .about-service-card p {
  font-size: 15px;
  color: var(--ink-dim);
  margin: 0;
}

.page-about .about-service-tips {
  margin-top: 16px;
  padding: 20px 24px;
  border-left: 3px solid var(--live);
  background: var(--surface);
  font-size: 15px;
  color: var(--ink-dim);
}

.page-about .about-service-tips a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .about-service-tips a:hover {
  border-bottom-color: var(--accent);
}

/* ---------- 团队组织图 ---------- */
.page-about .about-team-org-wrap {
  overflow-x: auto;
  margin: 24px 0;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 16px;
}

.page-about .about-team-org {
  min-width: 720px;
  width: 100%;
  height: auto;
  display: block;
}

.page-about .about-team-org .org-box {
  fill: none;
  stroke: var(--line);
  stroke-width: 1;
}

.page-about .about-team-org .org-dept {
  fill: var(--ink);
  font-family: var(--font-display);
  font-size: 20px;
}

.page-about .about-team-org .org-count {
  fill: var(--accent);
  font-family: var(--font-mono);
  font-size: 14px;
}

.page-about .about-team-org .org-stem,
.page-about .about-team-org .org-branch {
  stroke: var(--line);
  stroke-width: 1;
}

.page-about .about-team-org .org-sub {
  fill: none;
  stroke: var(--line);
  stroke-width: 1;
}

.page-about .about-team-org .org-sub-text {
  fill: var(--ink-dim);
  font-family: var(--font-mono);
  font-size: 13px;
}

/* ---------- 团队可展开详情 ---------- */
.page-about .about-team-details-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 20px 0 28px;
}

.page-about .about-team-details {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 14px 16px;
}

.page-about .about-team-details summary {
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  list-style: none;
  position: relative;
  padding-right: 28px;
}

.page-about .about-team-details summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--accent);
}

.page-about .about-team-details[open] summary::after {
  content: "–";
}

.page-about .about-team-details p {
  margin: 10px 0 0;
  font-size: 14px;
  color: var(--ink-dim);
}

/* ---------- 资质 ---------- */
.page-about .about-qualifications {
  margin-top: 28px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.page-about .about-qualifications__title {
  font-size: 18px;
  margin: 0 0 12px;
  color: var(--ink);
}

.page-about .about-qualifications p {
  color: var(--ink-dim);
  font-size: 15px;
  max-width: 720px;
}

.page-about .about-qualifications__btn {
  margin-top: 16px;
  text-decoration: none;
  display: inline-block;
}

/* ---------- 出版信息版权页风格 ---------- */
.page-about .about-colophon {
  margin-top: 64px;
  padding: 28px 20px;
  background: var(--rail);
  border: 1px solid var(--line);
}

.page-about .about-colophon__row {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.page-about .about-colophon__dl {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0;
}

.page-about .about-colophon__dl > div {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  font-size: 14px;
}

.page-about .about-colophon__dl dt {
  color: var(--muted);
  font-family: var(--font-mono);
  min-width: 90px;
}

.page-about .about-colophon__dl dd {
  color: var(--ink-dim);
  margin: 0;
}

.page-about .about-colophon__note {
  margin: 20px 0 0;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 56px 32px 80px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 360px;
    align-items: end;
  }

  .page-about .about-toc {
    margin: 32px;
  }

  .page-about .about-main {
    padding: 0 32px 80px;
  }

  .page-about .about-data-wall {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-products-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-service-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .page-about .about-team-details-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-colophon__dl {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-colophon {
    padding: 32px 32px;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 1080px) {
  .page-about .about-hero {
    padding: 64px 48px 88px;
  }

  .page-about .about-hero__inner {
    max-width: var(--maxw);
  }

  .page-about .about-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 48px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 48px;
  }

  .page-about .about-toc {
    position: sticky;
    top: 24px;
    align-self: start;
    margin: 0;
  }

  .page-about .about-toc__list {
    flex-direction: column;
    gap: 0;
  }

  .page-about .about-toc__link {
    padding: 10px 12px;
  }

  .page-about .about-main {
    padding: 0 0 96px;
  }

  .page-about .about-section {
    margin-bottom: 96px;
  }

  .page-about .about-section--data .about-section__body {
    max-width: 820px;
  }

  .page-about .about-timeline {
    padding-left: 32px;
  }

  .page-about .about-timeline__item {
    padding-left: 28px;
  }

  .page-about .about-data-wall {
    gap: 16px;
  }

  .page-about .about-data-card {
    padding: 24px 20px;
  }

  .page-about .about-colophon {
    padding: 36px 40px;
  }
}