/* ===== 品牌档案 · 页面专属样式 ===== */
.page-about {
  --about-rail-grad: linear-gradient(165deg, rgba(155, 92, 255, 0.24) 0%, rgba(26, 19, 56, 0.72) 46%, rgba(11, 14, 18, 0.96) 100%);
  --about-drawer-grad: linear-gradient(135deg, rgba(43, 48, 54, 0.92) 0%, rgba(26, 19, 56, 0.68) 100%);
  --about-border-soft: rgba(244, 235, 217, 0.12);
  --about-border-faint: rgba(244, 235, 217, 0.07);
  background: var(--bg-deep);
  letter-spacing: 0.005em;
}

/* ===== 章节共用节奏 ===== */
.page-about .about-section {
  padding: clamp(52px, 8vw, 96px) 0;
  border-bottom: 1px solid var(--about-border-soft);
}

.page-about .about-section__head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: clamp(28px, 5vw, 44px);
}

.page-about .about-section__index {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 34px;
  padding: 0 12px 0 14px;
  transform: skewX(-12deg);
  background: rgba(183, 240, 75, 0.10);
  border: 1px solid var(--border-bright);
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}

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

.page-about .about-section__heading .section-label {
  margin: 0 0 8px;
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-about .about-section__heading .section-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.12;
  color: var(--paper);
  text-transform: uppercase;
}

.page-about .about-section__heading .section-desc {
  margin: 0;
  max-width: 56em;
  color: var(--rock);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
}

/* ===== 首屏：分屏叙事 + 数据轴 ===== */
.page-about .about-hero {
  padding-top: clamp(36px, 6vw, 72px);
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(26, 19, 56, 0.55) 0%, rgba(11, 14, 18, 0) 68%),
    var(--bg-deep);
}

.page-about .about-hero__container {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
}

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

.page-about .about-hero__topline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin: 0 0 26px;
}

.page-about .about-hero__title {
  margin: 0 0 28px;
  font-family: var(--font-display);
  font-size: clamp(34px, 5.2vw, 60px);
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--paper);
}

.page-about .about-hero__title span {
  color: var(--purple);
}

.page-about .about-hero__title::after {
  content: "";
  display: block;
  width: 72px;
  height: 6px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--acid), transparent);
  clip-path: polygon(0 0, 100% 0, 82% 100%, 0 100%);
}

.page-about .about-hero__lead {
  margin: 0 0 32px;
  max-width: 46em;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.1vw, 16px);
  line-height: 1.75;
  color: var(--paper);
  opacity: 0.88;
  border-left: 3px solid var(--purple);
  padding-left: 18px;
}

.page-about .about-hero__factlist {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: 580px;
}

.page-about .about-hero__factlist li {
  border: 1px solid var(--about-border-faint);
  background: rgba(43, 48, 54, 0.35);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--rock);
}

.page-about .about-hero__factlist strong {
  display: block;
  color: var(--acid);
  font-size: 20px;
  font-family: var(--font-display);
  margin-bottom: 4px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* 数据面板 */
.page-about .about-hero__data {
  position: relative;
  min-height: 360px;
  border: 1px solid var(--border-mid);
  background: var(--about-rail-grad);
  display: flex;
  align-items: flex-end;
  padding: 22px;
  overflow: hidden;
}

.page-about .about-hero__texture {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.20;
  mix-blend-mode: screen;
}

.page-about .about-hero__data-inner {
  position: relative;
  flex: 1;
  border: 1px solid var(--about-border-soft);
  background: rgba(11, 14, 18, 0.78);
  backdrop-filter: blur(4px);
  padding: 18px 20px;
}

.page-about .about-hero__data-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--rock);
  letter-spacing: 0.16em;
}

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

.page-about .about-snapshot__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--about-border-faint);
}

.page-about .about-snapshot__row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-about .about-snapshot__row dt {
  color: var(--rock);
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-about .about-snapshot__row dd {
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  text-align: right;
  margin: 0;
}

/* ===== 01 档案室剖面 ===== */
.page-about .about-profiling__drawers {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}

.page-about .about-drawer {
  border: 1px solid var(--about-border-soft);
  background: var(--about-drawer-grad);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-drawer[open] {
  border-color: var(--border-bright);
  background: rgba(26, 19, 56, 0.52);
}

.page-about .about-drawer__summary {
  list-style: none;
  cursor: pointer;
  user-select: none;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
}

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

.page-about .about-drawer__summary:hover {
  background: rgba(155, 92, 255, 0.06);
}

.page-about .about-drawer__summary:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: -2px;
}

.page-about .about-drawer__num {
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  border: 1px solid var(--border-dim);
  background: rgba(11, 14, 18, 0.5);
  padding: 4px 8px;
  transform: skewX(-8deg);
}

.page-about .about-drawer__name {
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.02em;
}

.page-about .about-drawer__count {
  color: var(--rock);
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-about .about-drawer__list {
  list-style: none;
  margin: 0;
  padding: 4px 18px 20px 74px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
}

.page-about .about-drawer__list li {
  position: relative;
  padding-left: 16px;
  font-family: var(--font-mono);
  font-size: 14px;
}

.page-about .about-drawer__list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--acid);
}

.page-about .about-drawer__list a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

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

.page-about .about-profiling__figure {
  margin: 0;
  border: 1px solid var(--about-border-soft);
  background: var(--bg-smoke);
  padding: 12px;
}

.page-about .about-profiling__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 2 / 1;
}

.page-about .about-profiling__figure figcaption {
  margin-top: 10px;
  color: var(--rock);
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: right;
}

/* ===== 02 更新地图 ===== */
.page-about .about-map {
  background: linear-gradient(180deg, transparent 0%, rgba(155, 92, 255, 0.05) 50%, transparent 100%);
}

.page-about .about-map__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

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

.page-about .about-map__node {
  position: relative;
  padding: 0 0 28px 34px;
}

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

.page-about .about-map__node::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: -4px;
  width: 2px;
  background: rgba(155, 92, 255, 0.32);
}

.page-about .about-map__node:last-child::before {
  display: none;
}

.page-about .about-map__dot {
  position: absolute;
  left: 0;
  top: 2px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 3px solid var(--purple);
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about .about-map__node--current .about-map__dot {
  border-color: var(--acid);
  box-shadow: 0 0 0 5px rgba(183, 240, 75, 0.12);
}

.page-about .about-map__node--current .about-map__dot::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--acid);
}

.page-about .about-map__batch {
  display: inline-block;
  margin-bottom: 6px;
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-about .about-map__node--current .about-map__batch {
  color: var(--acid-bright);
}

.page-about .about-map__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--paper);
}

.page-about .about-map__desc {
  margin: 0;
  max-width: 42em;
  color: var(--rock);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
}

.page-about .about-map__figure {
  margin: 0;
  border: 1px solid var(--about-border-soft);
  background: var(--bg-smoke);
  padding: 12px;
  align-self: start;
}

.page-about .about-map__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 1 / 1;
}

.page-about .about-map__figure figcaption {
  margin-top: 10px;
  color: var(--rock);
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: right;
}

/* ===== 03 服务边界 ===== */
.page-about .about-service {
  background: linear-gradient(135deg, rgba(215, 38, 61, 0.04) 0%, transparent 42%, transparent 68%, rgba(183, 240, 75, 0.03) 100%);
}

.page-about .about-service .content-narrow {
  max-width: 820px;
}

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

.page-about .about-service-card {
  background: linear-gradient(180deg, rgba(43, 48, 54, 0.70), rgba(11, 14, 18, 0.85));
  border: 1px solid var(--about-border-soft);
  box-shadow: var(--shadow-card);
}

.page-about .about-service-card .card-head {
  padding: 14px 16px 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.page-about .about-service-card .card-title {
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--paper);
}

.page-about .about-service-card .card-meta {
  color: var(--rock);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
}

.page-about .about-service-card .card-body {
  padding: 8px 16px 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  color: var(--paper);
}

.page-about .about-service-card .data-list {
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
}

.page-about .about-service-card .data-list li {
  padding: 6px 0;
  color: var(--paper);
}

.page-about .about-service-card .data-list li::before {
  content: "▸ ";
  color: var(--purple);
  margin-right: 4px;
}

.page-about .about-service__note {
  margin: 8px 0 0;
  color: var(--rock);
  font-size: 12px;
  line-height: 1.5;
}

.page-about .about-service__phone,
.page-about .about-service__addr {
  margin: 0 0 8px;
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-about .about-service__action {
  margin-top: 28px;
  text-align: center;
}

/* ===== 04 关键词索引 ===== */
.page-about .about-index {
  padding-bottom: clamp(64px, 10vw, 112px);
}

.page-about .about-index .content-wide {
  max-width: 1080px;
}

.page-about .about-index__table {
  border-top: 1px solid var(--border-bright);
  max-width: 920px;
  margin: 0 auto;
}

.page-about .about-index__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--about-border-faint);
}

.page-about .about-index__row:hover {
  background: rgba(155, 92, 255, 0.03);
}

.page-about .about-index__term {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.4;
  color: var(--paper);
  background: rgba(183, 240, 75, 0.06);
  border-left: 3px solid var(--acid);
  padding: 10px 12px;
}

.page-about .about-index__go {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  padding: 8px 12px;
  border: 1px solid var(--border-bright);
  background: rgba(11, 14, 18, 0.6);
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.page-about .about-index__go:hover {
  background: rgba(183, 240, 75, 0.10);
  border-color: var(--acid);
}

/* ===== 响应式断点 ===== */
@media (min-width: 900px) {
  .page-about .about-hero__container {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: stretch;
  }

  .page-about .about-hero__data {
    min-height: 480px;
  }

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

  .page-about .about-map__layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
    gap: 48px;
  }

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

  .page-about .about-index__row {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 14px 6px;
  }

  .page-about .about-index__term {
    font-size: 16px;
  }

  .page-about .about-index__go {
    justify-self: end;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero__title {
    font-size: 64px;
  }

  .page-about .about-map__track {
    border-left: 2px solid rgba(155, 92, 255, 0.30);
    padding-left: 30px;
    margin-left: 12px;
  }
}

/* ===== 动效降级适配 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation: none !important;
    transition: none !important;
  }
}