/* ===================================================
   page-about · 品牌档案
   作用域内所有选择器以 .page-about 前缀限定
   =================================================== */

.page-about {
  --about-gold-soft: rgba(200, 162, 74, 0.16);
  --about-gold-hair: rgba(200, 162, 74, 0.5);
  --about-body-prose: 38em;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: 22px 0 30px;
  background:
    radial-gradient(130% 90% at 100% 0%, rgba(74, 18, 32, 0.08), transparent 62%),
    var(--pj-paper);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 24px;
  margin-top: 22px;
}

.page-about .about-hero__kicker {
  margin: 0 0 12px;
  font-family: var(--pj-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--pj-clay);
}

.page-about .about-hero__title {
  margin: 0 0 16px;
  max-width: 20ch;
  font-family: var(--pj-serif);
  font-weight: 900;
  font-size: clamp(1.85rem, 6vw, 3.2rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--pj-wine);
}

.page-about .about-hero__title::after {
  content: "";
  display: block;
  width: 64px;
  height: 1px;
  margin-top: 18px;
  background: var(--pj-gold);
}

.page-about .about-hero__main .pj-lede {
  max-width: 36em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--pj-ink);
}

.page-about .about-hero__aside {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 18px 20px;
  background: var(--pj-paper-lift);
  border: 1px solid var(--pj-line-soft);
  border-radius: var(--pj-r-lg);
}

.page-about .about-hero__vertical {
  flex: none;
  margin: 0;
  min-height: 118px;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--pj-sans);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--pj-stone);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  font-size: 14px;
  color: var(--pj-stone);
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--pj-line-soft);
}

.page-about .about-hero__facts li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-fact__num {
  flex: none;
  min-width: 1.6ch;
  font-family: var(--pj-serif);
  font-weight: 900;
  font-size: 24px;
  line-height: 1;
  color: var(--pj-wine);
}

.page-about .about-hero__media {
  margin: 30px 0 0;
}

.page-about .about-hero__media .pj-media__frame {
  border-radius: var(--pj-r-lg);
  overflow: hidden;
}

/* ---------- 连续画布 + 分屏母版 ---------- */

.page-about .about-canvas {
  background: var(--pj-paper);
}

.page-about .about-frame {
  display: grid;
  gap: 0;
}

.page-about .about-body {
  min-width: 0;
  padding: 6px 0 0;
}

/* ---------- 左栏：纵向时间轴 ---------- */

.page-about .about-rail {
  position: relative;
  padding: 6px 0 18px;
}

.page-about .about-rail__label {
  margin: 0 0 14px;
  font-family: var(--pj-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--pj-clay);
}

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-node {
  position: relative;
  flex: none;
}

.page-about .about-node__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid var(--about-gold-hair);
  border-radius: var(--pj-r-pill);
  text-decoration: none;
  color: var(--pj-ink);
  white-space: nowrap;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.page-about .about-node__link:hover,
.page-about .about-node__link:focus-visible {
  background: var(--pj-wine);
  border-color: var(--pj-wine);
  color: var(--pj-gold-bright);
  outline: none;
}

.page-about .about-node__link:focus-visible {
  box-shadow: 0 0 0 2px var(--pj-gold);
}

.page-about .about-node__num {
  font-family: var(--pj-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--pj-clay);
}

.page-about .about-node__link:hover .about-node__num,
.page-about .about-node__link:focus-visible .about-node__num {
  color: var(--pj-gold-bright);
}

.page-about .about-node__name {
  font-family: var(--pj-serif);
  font-size: 14px;
  font-weight: 600;
}

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

/* ---------- 右栏：章节 ---------- */

.page-about .about-chapter {
  position: relative;
  padding: 34px 0 42px;
  border-top: 1px solid var(--pj-line-soft);
  scroll-margin-top: calc(var(--pj-header-h) + 26px);
}

.page-about .about-chapter:first-child {
  padding-top: 16px;
  border-top: 0;
}

.page-about .about-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--about-gold-hair);
}

.page-about .about-chapter__num {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 26px;
  padding: 0 10px;
  border: 1px solid var(--about-gold-hair);
  border-radius: var(--pj-r-pill);
  font-family: var(--pj-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--pj-clay);
  transition: background-color 200ms ease, color 200ms ease;
}

.page-about .about-chapter__title {
  margin: 0;
  font-family: var(--pj-serif);
  font-weight: 600;
  font-size: clamp(1.28rem, 4vw, 1.9rem);
  line-height: 1.34;
  color: var(--pj-wine);
}

.page-about .about-chapter:target .about-chapter__num {
  background: var(--pj-wine);
  border-color: var(--pj-wine);
  color: var(--pj-gold-bright);
}

.page-about .about-chapter .pj-prose {
  max-width: var(--about-body-prose);
}

.page-about .about-chapter .pj-prose p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--pj-ink);
}

.page-about .about-chapter .pj-prose a {
  color: var(--pj-wine);
  text-decoration: none;
  border-bottom: 1px solid var(--about-gold-hair);
  transition: border-color 160ms ease, color 160ms ease;
}

.page-about .about-chapter .pj-prose a:hover {
  color: var(--pj-clay);
  border-bottom-color: var(--pj-clay);
}

/* ---------- 01 沿革条目 ---------- */

.page-about .about-milestones {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .about-milestone {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid var(--pj-line-soft);
  scroll-margin-top: calc(var(--pj-header-h) + 28px);
}

.page-about .about-milestone:first-child {
  border-top: 0;
  padding-top: 8px;
}

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

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

.page-about .about-milestone__title {
  margin: 0 0 8px;
  font-family: var(--pj-serif);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.45;
  color: var(--pj-ink);
}

.page-about .about-milestone__desc {
  margin: 0;
  max-width: var(--about-body-prose);
  font-size: 15px;
  line-height: 1.8;
  color: var(--pj-stone);
}

.page-about .about-milestone:target {
  background: linear-gradient(90deg, var(--about-gold-soft), transparent 70%);
}

/* ---------- 02 命名对照 ---------- */

.page-about .about-names {
  list-style: none;
  margin: 26px 0 24px;
  padding: 0;
}

.page-about .about-name {
  display: grid;
  gap: 8px;
  padding: 14px 0;
  border-bottom: 1px solid var(--pj-line-soft);
}

.page-about .about-name:first-child {
  border-top: 1px solid var(--pj-line-soft);
}

.page-about .about-name__slug {
  justify-self: start;
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--pj-r-pill);
  background: var(--pj-wine);
  color: var(--pj-gold-bright);
  font-family: var(--pj-serif);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.page-about .about-name__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--pj-stone);
}

/* ---------- 折叠面板 ---------- */

.page-about .about-fold {
  margin-top: 8px;
  background: var(--pj-paper-lift);
  border: 1px solid var(--pj-line-soft);
  border-radius: var(--pj-r-md);
  overflow: hidden;
}

.page-about .about-fold__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--pj-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--pj-wine);
}

.page-about .about-fold__summary::-webkit-details-marker {
  display: none;
}

.page-about .about-fold__summary::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--pj-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--pj-gold);
  transition: transform 200ms ease;
}

.page-about .about-fold[open] .about-fold__summary::after {
  transform: rotate(45deg);
}

.page-about .about-fold__summary:focus-visible {
  outline: 2px solid var(--pj-gold);
  outline-offset: -2px;
}

.page-about .about-fold__num {
  flex: none;
  padding: 3px 9px;
  border: 1px solid var(--about-gold-hair);
  border-radius: var(--pj-r-pill);
  font-family: var(--pj-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--pj-clay);
}

.page-about .about-fold__body {
  padding: 16px 18px 20px;
  border-top: 1px solid var(--pj-line-soft);
}

.page-about .about-fold__body p {
  margin: 0 0 12px;
  max-width: var(--about-body-prose);
  font-size: 14px;
  line-height: 1.75;
  color: var(--pj-stone);
}

.page-about .about-fold__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-fold__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--pj-ink);
}

.page-about .about-fold__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 1px;
  background: var(--pj-gold);
}

/* ---------- 03 分组判据 ---------- */

.page-about .about-criteria {
  margin-top: 8px;
}

.page-about .about-criterion {
  padding: 20px 0 18px;
  border-top: 1px solid var(--pj-line-soft);
}

.page-about .about-criterion:first-child {
  border-top: 0;
}

.page-about .about-criterion__label {
  margin: 0 0 10px;
  font-family: var(--pj-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--pj-clay);
}

.page-about .about-criterion__title {
  margin: 0 0 8px;
  font-family: var(--pj-serif);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.45;
  color: var(--pj-ink);
}

.page-about .about-criterion__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--pj-stone);
}

.page-about .about-well {
  margin-top: 26px;
  padding: 20px 22px;
  border-radius: var(--pj-r-md);
  background: rgba(51, 81, 63, 0.09);
  border-left: 2px solid var(--pj-moss);
}

.page-about .about-well__title {
  margin: 0 0 8px;
  font-family: var(--pj-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--pj-moss);
}

.page-about .about-well__desc {
  margin: 0;
  max-width: var(--about-body-prose);
  font-size: 15px;
  line-height: 1.8;
  color: var(--pj-ink);
}

/* ---------- 04 编辑与审校 ---------- */

.page-about .about-editorial__grid {
  display: grid;
  gap: 26px;
}

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

.page-about .about-editorial__media .pj-media__frame {
  border-radius: var(--pj-r-md);
  overflow: hidden;
}

.page-about .about-compare {
  display: grid;
  gap: 2px;
  margin-top: 30px;
  border-radius: var(--pj-r-md);
  overflow: hidden;
}

.page-about .about-compare__col {
  padding: 22px 20px;
  background: var(--pj-paper-lift);
}

.page-about .about-compare__col--check {
  background: rgba(51, 81, 63, 0.09);
}

.page-about .about-compare__label {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--about-gold-hair);
  font-family: var(--pj-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--pj-clay);
}

.page-about .about-compare__col--check .about-compare__label {
  color: var(--pj-moss);
}

.page-about .about-compare__list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: about-cmp;
  display: grid;
  gap: 12px;
}

.page-about .about-compare__list li {
  position: relative;
  counter-increment: about-cmp;
  padding-left: 30px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--pj-ink);
}

.page-about .about-compare__list li::before {
  content: counter(about-cmp, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--pj-mono);
  font-size: 12px;
  color: var(--pj-gold);
}

.page-about .about-editorial__note {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--pj-line-soft);
  max-width: var(--about-body-prose);
  font-size: 14px;
  line-height: 1.8;
  color: var(--pj-stone);
}

/* ---------- 05 服务边界 ---------- */

.page-about .about-boundary__media {
  margin: 0 0 26px;
  max-width: 340px;
}

.page-about .about-boundary__media .pj-media__frame {
  border-radius: var(--pj-r-md);
  overflow: hidden;
}

.page-about .about-boundary__prose {
  max-width: var(--about-body-prose);
}

.page-about .about-contact {
  margin-top: 28px;
  padding: 22px 22px 20px;
  background: var(--pj-paper-lift);
  border: 1px solid var(--pj-line-soft);
  border-radius: var(--pj-r-md);
}

.page-about .about-contact__head {
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--about-gold-hair);
  font-family: var(--pj-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--pj-clay);
}

.page-about .about-contact__list {
  margin: 0;
  padding: 0;
}

.page-about .about-contact__row {
  display: grid;
  gap: 4px;
  padding: 10px 0;
  border-bottom: 1px solid var(--pj-line-soft);
}

.page-about .about-contact__row:last-of-type {
  border-bottom: 0;
}

.page-about .about-contact__row dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--pj-stone);
}

.page-about .about-contact__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--pj-ink);
  word-break: break-word;
}

.page-about .about-contact__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--pj-line-soft);
  font-size: 14px;
  line-height: 1.8;
  color: var(--pj-stone);
}

.page-about .about-contact__note a {
  color: var(--pj-wine);
  text-decoration: none;
  border-bottom: 1px solid var(--about-gold-hair);
}

.page-about .about-contact__note a:hover {
  color: var(--pj-clay);
  border-bottom-color: var(--pj-clay);
}

/* ---------- 返回常用入口窄栏 ---------- */

.page-about .about-return {
  margin-top: 8px;
  padding: 38px 0;
  background: linear-gradient(180deg, var(--pj-wine) 0%, var(--pj-wine-deep) 100%);
}

.page-about .about-return__inner {
  display: grid;
  gap: 16px;
  padding-top: 22px;
  border-top: 1px solid var(--about-gold-hair);
}

.page-about .about-return__label {
  margin: 0;
  font-family: var(--pj-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--pj-gold-bright);
}

.page-about .about-return__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-return__link {
  display: inline-block;
  padding: 9px 20px;
  border: 1px solid var(--about-gold-hair);
  border-radius: var(--pj-r-pill);
  text-decoration: none;
  font-family: var(--pj-serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--pj-on-dark);
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease;
}

.page-about .about-return__link:hover,
.page-about .about-return__link:focus-visible {
  background: var(--pj-gold);
  border-color: var(--pj-gold);
  color: var(--pj-wine-deep);
  outline: none;
}

.page-about .about-return__link:focus-visible {
  box-shadow: 0 0 0 2px var(--pj-gold-bright);
}

/* ===================================================
   响应式
   =================================================== */

@media (min-width: 700px) {
  .page-about .about-milestone {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 4px 26px;
    align-items: baseline;
  }

  .page-about .about-name {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: center;
    gap: 22px;
  }

  .page-about .about-contact__row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-about .about-compare {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 30px 0 44px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 40px;
    align-items: end;
  }

  .page-about .about-hero__aside {
    padding: 22px 24px;
  }

  .page-about .about-editorial__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }

  .page-about .about-boundary__media {
    max-width: 320px;
    float: none;
  }

  .page-about .about-return__inner {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: center;
    gap: 28px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-frame {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    column-gap: clamp(32px, 4vw, 62px);
  }

  .page-about .about-rail {
    padding: 16px clamp(20px, 3vw, 40px) 40px 0;
    border-right: 1px solid var(--pj-line-soft);
  }

  .page-about .about-rail__sticky {
    position: sticky;
    top: calc(var(--pj-header-h) + 30px);
  }

  .page-about .about-timeline {
    display: grid;
    gap: 2px;
    overflow: visible;
  }

  .page-about .about-timeline::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 14px;
    bottom: 14px;
    width: 1px;
    background: linear-gradient(180deg, var(--pj-gold) 0%, rgba(200, 162, 74, 0.34) 68%, rgba(200, 162, 74, 0) 100%);
  }

  .page-about .about-node {
    flex: none;
  }

  .page-about .about-node__link {
    display: block;
    position: relative;
    padding: 10px 10px 10px 32px;
    border: 0;
    border-radius: var(--pj-r-md);
    white-space: normal;
  }

  .page-about .about-node__link::before {
    content: "";
    position: absolute;
    left: 3px;
    top: 16px;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--pj-paper);
    border: 1px solid var(--pj-gold);
    transition: background-color 180ms ease, transform 180ms ease;
  }

  .page-about .about-node__link:hover,
  .page-about .about-node__link:focus-visible {
    background: var(--about-gold-soft);
    color: var(--pj-wine);
  }

  .page-about .about-node__link:hover::before,
  .page-about .about-node__link:focus-visible::before {
    background: var(--pj-gold);
    transform: scale(1.2);
  }

  .page-about .about-node__link:hover .about-node__num,
  .page-about .about-node__link:focus-visible .about-node__num {
    color: var(--pj-clay);
  }

  .page-about .about-node__num {
    display: block;
    margin-bottom: 3px;
  }

  .page-about .about-node__name {
    display: block;
    font-size: 15px;
    line-height: 1.45;
  }

  .page-about .about-node__pop {
    display: block;
    position: absolute;
    left: calc(100% + 16px);
    top: -4px;
    z-index: 6;
    width: 234px;
    margin: 0;
    padding: 12px 15px;
    background: var(--pj-paper-lift);
    border-left: 1px solid var(--pj-gold);
    border-radius: 0 var(--pj-r-md) var(--pj-r-md) 0;
    font-size: 13px;
    line-height: 1.7;
    color: var(--pj-stone);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-8px);
    transition: opacity 200ms ease, transform 200ms ease, visibility 0s linear 200ms;
  }

  .page-about .about-node:hover .about-node__pop,
  .page-about .about-node:focus-within .about-node__pop {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    transition-delay: 0s;
  }
}

@media (min-width: 1200px) {
  .page-about .about-chapter {
    padding: 42px 0 54px;
  }

  .page-about .about-chapter:first-child {
    padding-top: 20px;
  }
}

/* ===================================================
   动效降级
   =================================================== */

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .page-about .about-node:hover .about-node__pop,
  .page-about .about-node:focus-within .about-node__pop {
    transform: none;
  }
}