.page-about {
  --about-rail: 240px;
  background: var(--c-bg);
  color: var(--c-cream);
  overflow-x: hidden;
}

/* ===== Hero 档案卡 ===== */
.page-about .about-hero {
  position: relative;
  padding: 40px 0 48px;
}
.page-about .about-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 220px;
  background:
    linear-gradient(115deg, transparent 0%, var(--c-gold-soft) 50%, transparent 60%),
    radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.07), transparent 220px);
  pointer-events: none;
}
.page-about .about-hero-grid {
  position: relative;
  display: grid;
  gap: 28px;
}
@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
    gap: 48px;
    align-items: center;
  }
}
.page-about .about-hero-kicker {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin: 0 0 16px;
}
.page-about .about-hero-copy h1 {
  font-family: var(--font-head);
  font-size: clamp(32px, 6vw, 64px);
  line-height: 1.08;
  letter-spacing: 0.01em;
  margin: 0 0 18px;
  color: var(--c-cream);
}
.page-about .about-hero-lede {
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-cream);
  max-width: 560px;
  margin: 0 0 10px;
}
.page-about .about-hero-sub {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-purple-gray);
  max-width: 560px;
  margin: 0;
}
.page-about .about-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 24px;
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-hero-card {
  position: relative;
  background: linear-gradient(150deg, rgba(42, 26, 74, 0.95), rgba(26, 16, 48, 0.88));
  border: 1px solid var(--c-gold-dim);
  padding: 24px 22px;
  overflow: hidden;
}
.page-about .about-hero-card-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-purple-gray);
  border-bottom: 1px solid var(--c-gold-dim);
  padding-bottom: 12px;
  margin-bottom: 8px;
}
.page-about .about-hero-card-note {
  font-size: 12px;
  color: var(--c-purple-gray);
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(107, 91, 149, 0.35);
}

/* ===== 共享数据列表的页面定制 ===== */
.page-about .data-list {
  margin: 0;
  padding: 0;
}
.page-about .data-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(107, 91, 149, 0.2);
}
.page-about .data-row:last-child {
  border-bottom: 0;
}
.page-about .data-label {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--c-purple-gray);
  letter-spacing: 0.06em;
}
.page-about .data-value {
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--c-cream);
  text-align: right;
}

/* ===== 档案夹布局 ===== */
.page-about .about-archive {
  padding: 24px 0 80px;
}
.page-about .about-archive-layout {
  display: grid;
  gap: 40px;
}
@media (min-width: 1080px) {
  .page-about .about-archive-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 60px;
  }
}
.page-about .about-archive-rail {
  min-width: 0;
}
@media (min-width: 1080px) {
  .page-about .about-archive-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }
}
.page-about .about-archive-body {
  min-width: 0;
}

/* ===== 左侧档案目录 ===== */
.page-about .about-toc {
  display: flex;
  align-items: center;
  gap: 16px;
  background: linear-gradient(180deg, rgba(42, 26, 74, 0.55), rgba(26, 16, 48, 0.35));
  border-bottom: 2px solid var(--c-gold);
  padding: 14px 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-about .about-toc-label {
  flex: none;
  margin: 0;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-gold);
  white-space: nowrap;
}
.page-about .about-toc-list {
  flex: none;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
  min-width: max-content;
}
.page-about .about-toc-list a {
  display: block;
  padding: 9px 12px;
  font-size: 13px;
  color: var(--c-purple-gray);
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
.page-about .about-toc-list a:hover,
.page-about .about-toc-list a.is-active {
  color: var(--c-gold);
  background: var(--c-gold-soft);
  border-color: var(--c-gold);
}
.page-about .about-toc-contact {
  flex: none;
  margin: 0;
  font-size: 13px;
  color: var(--c-neon);
  text-decoration: none;
  white-space: nowrap;
}
.page-about .about-toc-contact:hover {
  text-decoration: underline;
}
@media (min-width: 1080px) {
  .page-about .about-toc {
    display: block;
    padding: 24px 22px;
    border-bottom: 0;
    border-left: 2px solid var(--c-gold);
    overflow: visible;
  }
  .page-about .about-toc-label {
    margin: 0 0 18px;
  }
  .page-about .about-toc-list {
    display: grid;
    gap: 2px;
    min-width: 0;
  }
  .page-about .about-toc-list a {
    padding: 10px 8px;
    border-bottom: 1px solid rgba(107, 91, 149, 0.16);
    border-left: 2px solid transparent;
    white-space: normal;
  }
  .page-about .about-toc-list a:hover,
  .page-about .about-toc-list a.is-active {
    border-left-color: var(--c-gold);
    border-bottom-color: var(--c-gold-dim);
  }
  .page-about .about-toc-contact {
    margin-top: 18px;
  }
}

/* ===== 章节通用标题 ===== */
.page-about .about-section {
  margin-bottom: 72px;
}
@media (min-width: 900px) {
  .page-about .about-section {
    margin-bottom: 110px;
  }
}
.page-about .about-section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-gold-dim);
  margin-bottom: 28px;
}
.page-about .about-section-title {
  font-family: var(--font-head);
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.1;
  margin: 0;
  color: var(--c-cream);
}
.page-about .about-section-head .section-index {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-gold);
}
.page-about .about-history-intro {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-purple-gray);
  max-width: 640px;
  margin: -10px 0 24px;
}

/* ===== 01 品牌起源 ===== */
.page-about .about-origin-grid {
  display: grid;
  gap: 28px;
}
@media (min-width: 900px) {
  .page-about .about-origin-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 48px;
    align-items: center;
  }
}
.page-about .about-origin-copy p {
  font-size: 15px;
  line-height: 1.85;
  margin: 0 0 16px;
}
.page-about .about-origin-points {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}
.page-about .about-point-item {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 12px;
  align-items: start;
  background: linear-gradient(90deg, var(--c-gold-soft), transparent);
  border-left: 2px solid var(--c-gold);
  padding: 14px;
}
.page-about .about-point-item p {
  font-size: 14px;
  line-height: 1.65;
  margin: 0;
}
.page-about .about-point-num {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--c-gold);
}
.page-about .about-origin-visual .visual-frame {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  display: block;
}
.page-about .about-origin-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ===== 02 发展历程 ===== */
.page-about .about-timeline {
  position: relative;
  margin: 36px 0 32px;
  padding-left: 22px;
}
@media (min-width: 900px) {
  .page-about .about-timeline {
    padding-left: 44px;
  }
}
.page-about .about-timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-gold) 0%, var(--c-purple) 70%, transparent 100%);
}
@media (min-width: 900px) {
  .page-about .about-timeline::before {
    left: 14px;
  }
}
.page-about .about-timeline-deco {
  display: none;
  position: absolute;
  right: 0;
  top: 40px;
  width: 180px;
  height: 480px;
  pointer-events: none;
  z-index: 0;
}
@media (min-width: 900px) {
  .page-about .about-timeline-deco {
    display: block;
  }
}
.page-about .about-timeline-items {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 12px;
}
.page-about .about-tl-item {
  position: relative;
}
.page-about .about-tl-summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 14px 16px;
  background: linear-gradient(120deg, var(--c-bg-2), var(--c-bg-3));
  border: 1px solid rgba(201, 169, 110, 0.18);
  border-radius: var(--radius);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.page-about .about-tl-summary:hover {
  border-color: var(--c-gold);
  box-shadow: var(--shadow-neon);
}
.page-about .about-tl-summary::-webkit-details-marker {
  display: none;
}
.page-about .about-tl-summary::after {
  content: '+';
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-data);
  font-size: 16px;
  color: var(--c-neon);
  transition: color 0.3s ease;
}
.page-about .about-tl-item[open] .about-tl-summary::after {
  content: '-';
  color: var(--c-gold);
}
.page-about .about-tl-year {
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--c-gold);
}
.page-about .about-tl-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-cream);
  padding-right: 28px;
}
.page-about .about-tl-marker {
  position: absolute;
  left: -19px;
  top: 17px;
  width: 8px;
  height: 8px;
  background: var(--c-neon);
  transform: rotate(45deg);
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.6);
}
@media (min-width: 900px) {
  .page-about .about-tl-marker {
    left: -34px;
    width: 10px;
    height: 10px;
  }
}
.page-about .about-tl-detail {
  padding: 14px 16px;
  background: rgba(15, 10, 31, 0.7);
  border-left: 2px solid var(--c-purple);
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-purple-gray);
}
.page-about .about-history-figure {
  margin: 32px 0 0;
}
.page-about .about-history-figure img {
  width: 100%;
  height: auto;
  max-width: 640px;
  display: block;
  border: 1px solid var(--c-purple-dim);
}
.page-about .about-history-figure figcaption {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--c-purple-gray);
  margin-top: 10px;
  max-width: 640px;
}

/* ===== 03 服务规模 ===== */
.page-about .about-scale-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
@media (min-width: 900px) {
  .page-about .about-scale-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}
.page-about .about-scale-cell {
  position: relative;
  padding: 22px 18px 20px;
  background: linear-gradient(135deg, rgba(42, 26, 74, 0.92), rgba(26, 16, 48, 0.7));
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: background-color 0.3s ease;
}
.page-about .about-scale-cell::after {
  content: '';
  position: absolute;
  inset: 0;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  border: 1px solid var(--c-gold-dim);
  pointer-events: none;
  transition: border-color 0.3s ease;
}
.page-about .about-scale-cell:hover::after {
  border-color: var(--c-gold);
}
.page-about .about-scale-num {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.2;
  color: var(--c-gold);
  margin-bottom: 6px;
  transition: color 0.3s ease, text-shadow 0.3s ease;
}
.page-about .about-scale-cell:hover .about-scale-num {
  color: var(--c-neon);
  text-shadow: 0 0 12px rgba(0, 212, 255, 0.55);
}
.page-about .about-scale-label {
  display: block;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-purple-gray);
}
.page-about .about-scale-track {
  display: block;
  height: 4px;
  margin-top: 18px;
  background: rgba(107, 91, 149, 0.28);
  overflow: hidden;
}
.page-about .about-scale-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--c-gold), var(--c-neon));
}
.page-about .about-scale-fill-full {
  width: 100%;
}
.page-about .about-scale-fill-huge {
  width: 92%;
}
.page-about .about-scale-fill-major {
  width: 84%;
}
.page-about .about-scale-fill-solid {
  width: 72%;
}
.page-about .about-scale-fill-mid {
  width: 62%;
}
.page-about .about-scale-fill-half {
  width: 55%;
}
.page-about .about-scale-note {
  margin-top: 24px;
  padding: 18px 22px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-purple-gray);
  background: rgba(0, 212, 255, 0.04);
  border-right: 3px solid var(--c-neon);
}
.page-about .about-scale-note strong {
  color: var(--c-cream);
}

/* ===== 04 资质与认证 ===== */
.page-about .about-credential-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 900px) {
  .page-about .about-credential-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}
.page-about .about-credential-card {
  position: relative;
  padding: 24px 22px;
  background: linear-gradient(170deg, rgba(42, 26, 74, 0.75), rgba(15, 10, 31, 0.55));
  border-top: 2px solid var(--c-gold);
  border-left: 1px solid var(--c-purple-dim);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.page-about .about-credential-card:hover {
  transform: translateY(-3px);
  border-left-color: var(--c-gold);
}
.page-about .about-credential-index {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-neon);
}
.page-about .about-credential-title {
  font-family: var(--font-head);
  font-size: 19px;
  line-height: 1.35;
  color: var(--c-cream);
  margin: 12px 0 10px;
}
.page-about .about-credential-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-purple-gray);
  margin: 0;
}
.page-about .about-rule-note {
  margin-top: 28px;
  padding: 20px 24px;
  background: rgba(231, 76, 60, 0.08);
  border-left: 3px solid var(--c-red);
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-purple-gray);
}
.page-about .about-rule-note strong {
  color: var(--c-cream);
}

/* ===== 05 合作生态 ===== */
.page-about .about-eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 900px) {
  .page-about .about-eco-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}
.page-about .about-eco-card {
  position: relative;
  padding: 26px 22px;
  background: rgba(42, 26, 74, 0.45);
  border-left: 2px solid var(--c-purple);
  transition: border-color 0.3s ease, background 0.3s ease;
}
.page-about .about-eco-card:hover {
  border-left-color: var(--c-neon);
  background: rgba(42, 26, 74, 0.7);
}
.page-about .about-eco-icon {
  display: block;
  width: 30px;
  height: 30px;
  margin-bottom: 18px;
  background: linear-gradient(135deg, var(--c-gold) 0%, transparent 70%);
  clip-path: polygon(0 0, 75% 0, 100% 25%, 100% 100%, 25% 100%, 0 75%);
}
.page-about .about-eco-card h3 {
  font-family: var(--font-head);
  font-size: 17px;
  color: var(--c-cream);
  margin: 0 0 10px;
}
.page-about .about-eco-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-purple-gray);
  margin: 0;
}

/* ===== 06 用户口碑 ===== */
.page-about .about-reputation-grid {
  display: grid;
  gap: 32px;
}
@media (min-width: 900px) {
  .page-about .about-reputation-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 40px;
    align-items: center;
  }
}
.page-about .about-reputation-score {
  position: relative;
  text-align: center;
  padding: 36px 20px 28px;
  background: linear-gradient(160deg, rgba(201, 169, 110, 0.2), transparent 70%);
  border: 1px solid var(--c-gold-dim);
  margin-bottom: 22px;
}
.page-about .about-reputation-score::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 24px;
  width: 56px;
  height: 3px;
  background: var(--c-neon);
}
.page-about .about-reputation-num {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(56px, 8vw, 88px);
  line-height: 1;
  color: var(--c-gold);
}
.page-about .about-reputation-label {
  display: block;
  font-size: 15px;
  color: var(--c-cream);
  margin-top: 10px;
}
.page-about .about-reputation-score p {
  font-size: 13px;
  color: var(--c-purple-gray);
  margin: 6px 0 0;
}
.page-about .about-rep-legend {
  padding: 4px 8px;
}
.page-about .about-rep-row {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--c-purple-gray);
  margin: 0 0 6px;
  transition: color 0.3s ease;
}
.page-about .about-rep-row:hover {
  color: var(--c-gold);
}
.page-about .about-rep-bar {
  height: 8px;
  background: rgba(107, 91, 149, 0.26);
  overflow: hidden;
  margin-bottom: 18px;
}
.page-about .about-rep-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--c-gold), var(--c-neon));
  transition: filter 0.3s ease, box-shadow 0.3s ease;
}
.page-about .about-rep-bar:hover .about-rep-fill {
  filter: saturate(1.4) brightness(1.2);
  box-shadow: 0 0 18px rgba(0, 212, 255, 0.5);
}
.page-about .about-reputation-visual img {
  width: 100%;
  max-width: 600px;
  height: auto;
  display: block;
  border: 1px solid var(--c-purple-dim);
}
.page-about .about-reputation-caption {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--c-purple-gray);
  max-width: 600px;
  margin: 10px 0 0;
}

/* ===== 底部引导 ===== */
.page-about .about-closing {
  position: relative;
  margin-top: 24px;
  padding: 40px 28px;
  background:
    radial-gradient(circle at 88% 10%, rgba(0, 212, 255, 0.08), transparent 180px),
    linear-gradient(135deg, var(--c-bg-2), var(--c-bg-3));
  border: 1px solid var(--c-gold-dim);
  overflow: hidden;
}
.page-about .about-closing::after {
  content: '';
  position: absolute;
  right: -60px;
  bottom: -70px;
  width: 200px;
  height: 200px;
  border: 2px solid var(--c-gold-soft);
  transform: rotate(45deg);
  pointer-events: none;
}
.page-about .about-closing h2 {
  font-family: var(--font-head);
  font-size: clamp(24px, 4vw, 34px);
  color: var(--c-cream);
  margin: 0 0 12px;
  position: relative;
  z-index: 1;
}
.page-about .about-closing p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-purple-gray);
  max-width: 520px;
  margin: 0 0 24px;
  position: relative;
  z-index: 1;
}
.page-about .about-closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  position: relative;
  z-index: 1;
}