.page-about {
  --about-accent-soft: rgba(213, 75, 42, 0.12);
  --about-gold-soft: rgba(216, 161, 30, 0.14);
  --about-dark-soft: #2E231D;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}
.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-head);
  line-height: 1.2;
  margin: 0;
}
.page-about .container {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: 20px;
}
.page-about a {
  color: var(--accent);
  text-decoration: none;
}
.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 15px;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.page-about .btn:hover {
  transform: translateY(-2px);
}
.page-about .btn-primary {
  background: var(--accent);
  color: #fff;
}
.page-about .btn-primary:hover {
  background: var(--red);
}
.page-about .btn-gold {
  background: var(--gold);
  color: var(--ink);
}
.page-about .btn-gold:hover {
  background: #e6b32a;
}
.page-about .btn-outline {
  border: 1px solid var(--line);
  color: var(--ink);
}
.page-about .btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.page-about .about-hero .btn-outline,
.page-about .about-closing .btn-outline {
  border-color: rgba(245, 240, 230, 0.5);
  color: var(--cream);
}
.page-about .about-hero .btn-outline:hover,
.page-about .about-closing .btn-outline:hover {
  border-color: var(--cream);
  background: rgba(245, 240, 230, 0.08);
  color: var(--cream);
}
.page-about .eyebrow {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ===== Hero 首屏 ===== */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(1000px 400px at 85% -10%, rgba(216, 161, 30, 0.18), transparent 60%), linear-gradient(135deg, #1C1917 0%, #2E231D 55%, #1C1917 100%);
  color: var(--cream);
  padding: 40px 0 0;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -160px;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(216, 161, 30, 0.3);
  border-radius: 50%;
  pointer-events: none;
}
.page-about .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(245, 240, 230, 0.6);
  margin-bottom: 36px;
}
.page-about .breadcrumb a {
  color: rgba(245, 240, 230, 0.6);
  transition: color 0.25s var(--ease);
}
.page-about .breadcrumb a:hover {
  color: var(--gold);
}
.page-about .breadcrumb-sep {
  color: rgba(245, 240, 230, 0.4);
}
.page-about .breadcrumb-current {
  color: var(--cream);
}
.page-about .about-hero-grid {
  display: grid;
  gap: 36px;
}
.page-about .about-hero-copy .eyebrow {
  color: var(--gold);
  margin-bottom: 14px;
}
.page-about .about-hero-copy h1 {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--cream);
  max-width: 760px;
  margin-bottom: 18px;
}
.page-about .about-hero-lead {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(245, 240, 230, 0.82);
  max-width: 680px;
  margin: 0 0 28px;
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  border-top: 1px solid rgba(245, 240, 230, 0.14);
  border-bottom: 1px solid rgba(245, 240, 230, 0.14);
  padding: 22px 0;
}
.page-about .about-hero-stat {
  padding-right: 12px;
  border-right: 1px solid rgba(245, 240, 230, 0.12);
}
.page-about .about-hero-stat:last-child {
  border-right: 0;
  padding-right: 0;
}
.page-about .about-hero-stat-num {
  display: block;
  font-family: var(--font-num);
  font-size: 32px;
  font-weight: 600;
  color: var(--gold);
  line-height: 1.1;
}
.page-about .about-hero-stat-label {
  display: block;
  font-size: 13px;
  color: rgba(245, 240, 230, 0.65);
  margin-top: 6px;
}
.page-about .about-hero-meter {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 40px;
  padding: 18px 0;
  border-top: 1px solid rgba(245, 240, 230, 0.12);
}
.page-about .about-hero-meter-track {
  position: relative;
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, rgba(216, 161, 30, 0.85), rgba(216, 161, 30, 0.15));
  border-radius: 2px;
}
.page-about .about-hero-meter-track i {
  position: absolute;
  left: 0;
  top: -3px;
  width: 8px;
  height: 8px;
  background: var(--gold);
  border-radius: 50%;
}
.page-about .about-hero-meter-mark {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: rgba(245, 240, 230, 0.5);
}

/* ===== 布局与目录 ===== */
.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-top: 40px;
  padding-bottom: 72px;
}
.page-about .about-sidebar {
  position: relative;
}
.page-about .about-toc {
  border-left: 3px solid var(--accent);
  padding: 6px 0 6px 18px;
}
.page-about .about-toc .toc-title {
  display: block;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.page-about .about-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}
.page-about .about-toc-list a {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--brown);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.page-about .about-toc-list a:hover,
.page-about .about-toc-list a[aria-current="true"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ===== 章节通用 ===== */
.page-about .about-section {
  padding: 48px 0 8px;
}
.page-about .about-section-head {
  position: relative;
  border-top: 1px solid var(--line);
  padding-top: 26px;
  margin-bottom: 30px;
}
.page-about .about-section-index {
  position: absolute;
  top: -14px;
  left: 0;
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 600;
  color: var(--accent);
  background: var(--cream);
  padding-right: 16px;
}
.page-about .about-section-head .eyebrow {
  margin-bottom: 8px;
  display: block;
}
.page-about .about-section-head h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.page-about .about-section-desc {
  margin: 12px 0 0;
  font-size: 16px;
  color: var(--brown);
}

/* ===== 我们是谁 / Research Board ===== */
.page-about .about-board {
  background: linear-gradient(180deg, rgba(245, 240, 230, 0), rgba(239, 232, 220, 0.6));
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: grid;
  gap: 28px;
}
.page-about .about-board h3 {
  font-size: 18px;
  color: var(--ink);
  margin-bottom: 10px;
}
.page-about .research-summary p {
  color: var(--brown);
  font-size: 16px;
  margin: 0;
}
.page-about .research-evidence ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .research-evidence li {
  position: relative;
  padding-left: 18px;
  color: var(--brown);
  font-size: 15px;
}
.page-about .research-evidence li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.page-about .research-evidence .num {
  font-family: var(--font-num);
  font-weight: 700;
  color: var(--accent);
  margin-right: 2px;
}
.page-about .research-links {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  border-top: 1px dashed var(--line);
  padding-top: 16px;
  font-size: 14px;
  color: var(--muted);
}
.page-about .research-links a {
  color: var(--accent);
  font-weight: 600;
}
.page-about .research-links a:hover {
  text-decoration: underline;
}

/* ===== 内容编辑部 ===== */
.page-about .about-editorial-grid {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.page-about .about-team {
  position: relative;
  padding: 24px 4px 24px 0;
  border-bottom: 1px solid var(--line);
}
.page-about .about-team-num {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 600;
  color: var(--gold);
  background: var(--ink);
  border-radius: 999px;
  padding: 2px 12px;
  margin-bottom: 12px;
}
.page-about .about-team h3 {
  font-size: 20px;
  color: var(--ink);
  margin-bottom: 8px;
}
.page-about .about-team p {
  color: var(--brown);
  font-size: 15px;
  margin: 0;
  max-width: 520px;
}
.page-about .about-editorial-flow {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 32px 0 20px;
}
.page-about .about-flow-step {
  padding: 12px 24px;
  background: var(--ink);
  color: var(--cream);
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 15px;
  text-align: center;
}
.page-about .about-editorial-flow > span {
  text-align: center;
  color: var(--accent);
  font-family: var(--font-num);
  font-size: 18px;
  line-height: 1;
}
.page-about .about-editorial-note {
  border-left: 4px solid var(--gold);
  padding: 4px 0 4px 16px;
  background: var(--about-gold-soft);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.page-about .about-editorial-note p {
  margin: 0;
  font-size: 15px;
  color: var(--brown);
}

/* ===== 媒体图 ===== */
.page-about .about-media {
  margin: 36px 0 0;
}
.page-about .about-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
}
.page-about .about-media figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--muted);
}

/* ===== 从0到1341期 ===== */
.page-about .about-evolution {
  background: var(--dark);
  color: var(--cream);
  padding-bottom: 56px;
}
.page-about .about-evolution .about-section-head {
  border-top-color: rgba(245, 240, 230, 0.14);
}
.page-about .about-evolution .about-section-head h2 {
  color: var(--cream);
}
.page-about .about-evolution .about-section-desc {
  color: rgba(245, 240, 230, 0.7);
}
.page-about .about-evolution .about-section-index {
  background: var(--dark);
}
.page-about .about-timeline {
  position: relative;
  margin-top: 40px;
}
.page-about .about-timeline-curve {
  display: none;
}
.page-about .about-timeline-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 28px;
}
.page-about .about-timeline-list::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), var(--line), var(--accent));
  border-radius: 2px;
}
.page-about .about-timeline-item {
  position: relative;
  padding-left: 40px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.page-about .about-timeline-item:hover,
.page-about .about-timeline-item:focus-within {
  border-color: rgba(216, 161, 30, 0.4);
  background: rgba(245, 240, 230, 0.04);
}
.page-about .about-timeline-dot {
  position: absolute;
  left: 4px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--dark);
  border: 3px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(216, 161, 30, 0.12);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.page-about .about-timeline-item:hover .about-timeline-dot {
  transform: scale(1.25);
  box-shadow: 0 0 0 7px rgba(216, 161, 30, 0.18);
}
.page-about .about-timeline-step {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  background: rgba(216, 161, 30, 0.12);
  border-radius: 999px;
  padding: 2px 12px;
  margin-bottom: 10px;
}
.page-about .about-timeline-item h3 {
  font-size: 19px;
  color: var(--cream);
  margin-bottom: 8px;
}
.page-about .about-timeline-item p {
  font-size: 15px;
  color: rgba(245, 240, 230, 0.72);
  margin: 0;
  max-width: 560px;
}
.page-about .about-evolution .about-media figcaption {
  color: rgba(245, 240, 230, 0.6);
}

/* ===== 合规与信息管理 ===== */
.page-about .about-compliance-grid {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
}
.page-about .about-compliance-block {
  border-left: 3px solid var(--gold);
  padding: 2px 0 2px 18px;
  margin-bottom: 12px;
}
.page-about .about-compliance-label {
  display: block;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}
.page-about .about-compliance-value {
  display: block;
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: 8px;
  word-break: break-all;
}
.page-about .about-compliance-block p {
  font-size: 14px;
  color: var(--brown);
  margin: 0;
}
.page-about .about-compliance-disclosure {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 24px;
  padding: 16px 18px;
  background: var(--about-accent-soft);
  border-radius: var(--radius-md);
}
.page-about .about-compliance-disclosure-label {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--muted);
}
.page-about .about-compliance-disclosure-value {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
}
.page-about .about-compliance-disclosure-hint {
  font-size: 13px;
  color: var(--brown);
}
.page-about .about-compliance-note {
  margin-top: 24px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: rgba(216, 161, 30, 0.1);
  color: var(--brown);
  font-size: 14px;
}
.page-about .about-compliance-note a {
  color: var(--accent);
  font-weight: 600;
}
.page-about .about-compliance-note a:hover {
  text-decoration: underline;
}

/* ===== “注册送68”是什么 ===== */
.page-about .about-68 {
  padding-bottom: 48px;
}
.page-about .about-68-grid {
  display: grid;
  gap: 28px;
}
.page-about .about-68-main blockquote {
  margin: 0 0 20px;
  padding: 22px 24px;
  border-left: 4px solid var(--accent);
  background: var(--about-accent-soft);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-family: var(--font-head);
  font-size: 19px;
  line-height: 1.6;
  color: var(--ink);
}
.page-about .about-68-main p {
  color: var(--brown);
  font-size: 16px;
  margin: 0 0 16px;
}
.page-about .about-68-aside {
  background: var(--dark);
  color: var(--cream);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
}
.page-about .about-68-aside h3 {
  font-size: 18px;
  color: var(--gold);
  margin-bottom: 14px;
}
.page-about .about-68-aside ul {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-about .about-68-aside li {
  font-size: 15px;
  color: rgba(245, 240, 230, 0.8);
  padding-left: 14px;
  position: relative;
}
.page-about .about-68-aside li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.page-about .about-68-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-about .about-68-actions .btn {
  width: 100%;
}
.page-about .about-68-actions .btn-outline {
  border-color: rgba(245, 240, 230, 0.4);
  color: var(--cream);
}
.page-about .about-68-actions .btn-outline:hover {
  border-color: var(--cream);
  background: rgba(245, 240, 230, 0.08);
}

/* ===== 结尾 CTA ===== */
.page-about .about-closing {
  background: linear-gradient(135deg, #1C1917 0%, #2E231D 60%, #1C1917 100%);
  color: var(--cream);
  padding: 64px 0;
  text-align: center;
}
.page-about .about-closing .eyebrow {
  color: var(--gold);
  margin-bottom: 12px;
}
.page-about .about-closing h2 {
  font-size: 28px;
  color: var(--cream);
  margin-bottom: 12px;
}
.page-about .about-closing p {
  color: rgba(245, 240, 230, 0.75);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 28px;
}
.page-about .about-closing-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

/* ===== 平板增强 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding-top: 52px;
  }
  .page-about .about-hero-grid {
    grid-template-columns: 1.5fr 1fr;
    align-items: end;
    gap: 48px;
  }
  .page-about .about-hero-copy h1 {
    font-size: 46px;
  }
  .page-about .about-hero-lead {
    font-size: 17px;
  }
  .page-about .about-hero-stats {
    grid-template-columns: 1fr;
    border-top: 0;
    border-bottom: 0;
    padding: 0;
  }
  .page-about .about-hero-stat {
    border-right: 0;
    border-bottom: 1px solid rgba(245, 240, 230, 0.12);
    padding: 0 0 14px;
    margin-bottom: 14px;
  }
  .page-about .about-hero-stat:last-child {
    border-bottom: 0;
  }
  .page-about .about-hero-stat-num {
    font-size: 40px;
  }
  .page-about .about-toc-list {
    flex-direction: column;
    gap: 4px;
  }
  .page-about .about-section {
    padding-top: 56px;
  }
  .page-about .about-section-head h2 {
    font-size: 34px;
  }
  .page-about .about-board {
    grid-template-columns: 1fr 1.2fr;
    padding: 36px 32px;
  }
  .page-about .research-links {
    grid-column: 1 / -1;
  }
  .page-about .about-editorial-grid {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 36px;
  }
  .page-about .about-team:nth-child(odd) {
    border-right: 1px solid var(--line);
    padding-right: 36px;
  }
  .page-about .about-editorial-flow {
    flex-direction: row;
    align-items: center;
    justify-content: center;
  }
  .page-about .about-editorial-flow > span {
    font-size: 20px;
  }
  .page-about .about-compliance-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .page-about .about-compliance-disclosure {
    flex-direction: row;
    align-items: baseline;
    gap: 20px;
  }
  .page-about .about-68-grid {
    grid-template-columns: 1.3fr 1fr;
    gap: 36px;
  }
  .page-about .about-68-main blockquote {
    font-size: 21px;
  }
  .page-about .about-closing {
    padding: 80px 0;
  }
  .page-about .about-closing h2 {
    font-size: 36px;
  }
}

/* ===== 桌面增强 ===== */
@media (min-width: 1080px) {
  .page-about .container {
    padding-inline: 24px;
  }
  .page-about .about-hero-copy h1 {
    font-size: 54px;
  }
  .page-about .about-layout {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 64px;
    padding-top: 56px;
  }
  .page-about .about-sidebar {
    position: sticky;
    top: 36px;
    align-self: start;
  }
  .page-about .about-body {
    min-width: 0;
  }
  .page-about .about-editorial-grid {
    grid-template-columns: repeat(4, 1fr);
    column-gap: 28px;
  }
  .page-about .about-team {
    border-right: 1px solid var(--line);
    border-bottom: 0;
    padding-right: 24px;
    margin-bottom: 8px;
  }
  .page-about .about-team:last-child {
    border-right: 0;
  }
  .page-about .about-editorial-note {
    margin-top: 8px;
  }
  .page-about .about-timeline-list {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding-top: 30px;
  }
  .page-about .about-timeline-list::before {
    display: none;
  }
  .page-about .about-timeline-curve {
    display: block;
    position: absolute;
    top: -2px;
    left: 0;
    width: 100%;
    height: 48px;
    pointer-events: none;
  }
  .page-about .about-timeline-item {
    padding: 28px 20px 20px;
  }
  .page-about .about-timeline-item p {
    font-size: 14px;
  }
  .page-about .about-timeline-dot {
    left: 50%;
    top: -8px;
    margin-left: -8px;
  }
  .page-about .about-compliance-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
  }
  .page-about .about-compliance-value {
    font-size: 34px;
  }
  .page-about .about-68-main p {
    font-size: 17px;
  }
  .page-about .about-68-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .page-about .about-68-actions .btn {
    width: auto;
  }
}