.page-about {
  --about-line: var(--mauve);
  --about-soft-text: #E6DCF2;
  background: var(--porcelain);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 34px) 0 clamp(40px, 6vw, 76px);
  color: var(--porcelain);
  background:
    radial-gradient(130% 150% at 8% -10%, rgba(91, 46, 150, 0.96) 0%, rgba(46, 20, 80, 1) 58%),
    var(--violet-deep);
  border-bottom: 2px solid var(--ink);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(247, 244, 238, 0.07) 1px, transparent 1px);
  background-size: 48px 100%;
  pointer-events: none;
}

.page-about .about-hero .container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .about-hero .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--mauve);
}

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

.page-about .about-hero .breadcrumb a:hover {
  border-bottom-color: var(--gold);
}

.page-about .about-hero .breadcrumb li + li::before {
  content: "/";
  margin-right: 0.5em;
  color: var(--gold);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-hero h1 {
  margin: 0.25em 0 0.55em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--porcelain);
  max-width: 15em;
}

.page-about .about-hero .eyebrow {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  margin: 0;
}

.page-about .about-hero__intro {
  margin: 0;
  max-width: 36em;
  font-size: var(--fs-17);
  line-height: 1.85;
  color: var(--about-soft-text);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-hero__panel {
  padding: clamp(16px, 2.4vw, 24px);
  border: 2px solid var(--gold);
  background: rgba(23, 18, 31, 0.45);
  box-shadow: 8px 8px 0 rgba(217, 154, 43, 0.7);
}

.page-about .panel-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .panel-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-about .panel-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(180, 163, 201, 0.35);
}

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

.page-about .panel-idx {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--gold);
  letter-spacing: 0.08em;
}

.page-about .panel-txt {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--about-soft-text);
}

.page-about .panel-txt strong {
  display: block;
  color: var(--porcelain);
  font-weight: 600;
  font-size: var(--fs-17);
  margin-bottom: 0.15em;
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  padding: clamp(36px, 5.5vw, 72px) 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-chapter--band {
  background: var(--violet-mist);
}

.page-about .about-chapter--dark {
  background: var(--violet-deep);
  color: var(--porcelain);
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}

.page-about .about-chapter__grid {
  display: grid;
  gap: clamp(16px, 3vw, 28px);
}

.page-about .ch-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(4.2rem, 12vw, 9.5rem);
  line-height: 0.82;
  letter-spacing: -0.04em;
  color: var(--gold);
}

.page-about .ch-kicker {
  margin: 0.9em 0 0;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--violet);
}

.page-about .ch-title {
  margin: 0.4em 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.4vw, 2.3rem);
  line-height: 1.28;
  letter-spacing: -0.01em;
}

.page-about .about-chapter--dark .ch-kicker {
  color: var(--mauve);
}

.page-about .about-chapter--dark .ch-title {
  color: var(--porcelain);
}

.page-about .about-prose p {
  margin: 0 0 1.05em;
  max-width: 62ch;
  font-size: var(--fs-17);
  line-height: 1.8;
}

.page-about .about-prose p:last-child {
  margin-bottom: 0;
}

.page-about .about-chapter--dark .about-prose p {
  color: var(--about-soft-text);
}

/* ---------- 三条主线卡片 ---------- */
.page-about .pillar-list {
  display: grid;
  gap: 14px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .pillar {
  padding: 16px 18px;
  border: 2px solid var(--ink);
  background: var(--porcelain);
  box-shadow: var(--shadow-soft);
}

.page-about .pillar h3 {
  margin: 0 0 0.35em;
  font-family: var(--font-sans);
  font-size: var(--fs-17);
  font-weight: 600;
  color: var(--violet);
}

.page-about .pillar p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.72;
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: clamp(20px, 3vw, 30px) 0 0;
}

.page-about .about-figure--flush {
  margin-top: 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  background: var(--violet-mist);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--violet);
}

.page-about .about-chapter--dark .about-figure figcaption {
  color: var(--mauve);
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  gap: clamp(20px, 3.4vw, 34px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .team-chart {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  padding: 18px;
  border: 2px solid var(--ink);
  background: var(--porcelain);
  box-shadow: var(--shadow-hard);
}

.page-about .chart-svg {
  flex: 0 0 auto;
  width: clamp(124px, 32vw, 168px);
  height: auto;
}

.page-about .team-legend {
  flex: 1 1 180px;
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  font-size: 0.95rem;
  line-height: 1.6;
}

.page-about .team-legend li {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.page-about .team-legend strong {
  display: block;
  color: var(--violet);
  font-weight: 600;
}

.page-about .dot {
  width: 12px;
  height: 12px;
  margin-top: 0.4em;
  border-radius: 50%;
  border: 2px solid var(--ink);
}

.page-about .dot--edit { background: var(--violet); }
.page-about .dot--product { background: var(--vine); }
.page-about .dot--service { background: var(--gold); }

/* ---------- 时间线 ---------- */
.page-about .tl {
  position: relative;
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding: 0 0 0 34px;
  list-style: none;
  display: grid;
  gap: 24px;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--vine);
}

.page-about .tl-item {
  position: relative;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 4px;
  width: 20px;
  height: 20px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--gold);
  border: 2px solid var(--ink);
}

.page-about .tl-year {
  display: block;
  font-size: var(--fs-13);
  letter-spacing: 0.1em;
  color: var(--violet);
}

.page-about .tl-title {
  margin: 0.15em 0 0.35em;
  font-family: var(--font-sans);
  font-size: var(--fs-22);
  font-weight: 600;
  line-height: 1.3;
}

.page-about .tl-text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.72;
  max-width: 40ch;
}

/* ---------- 六道关 ---------- */
.page-about .gate-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .gate {
  border: 2px solid var(--gold);
  background: rgba(247, 244, 238, 0.06);
  box-shadow: 6px 6px 0 rgba(217, 154, 43, 0.4);
}

.page-about .gate summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-17);
  font-weight: 600;
  color: var(--porcelain);
}

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

.page-about .gate summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-17);
  color: var(--gold);
}

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

.page-about .gate summary:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

.page-about .gate-num {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .gate-body {
  padding: 12px 16px 16px;
  margin-top: 0;
  border-top: 1px dashed rgba(247, 244, 238, 0.3);
}

.page-about .gate-body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--about-soft-text);
}

/* ---------- 数字 ---------- */
.page-about .stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .stat {
  padding: 16px 16px 18px;
  border: 2px solid var(--ink);
  background: var(--porcelain);
  box-shadow: var(--shadow-soft);
}

.page-about .stat-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 4.6vw, 2.8rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--violet);
}

.page-about .stat-num small {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.42em;
  margin-left: 0.25em;
  color: var(--vine);
}

.page-about .stat-label {
  display: block;
  margin-top: 0.75em;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--violet);
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  padding: clamp(36px, 5vw, 68px) 0;
  background: var(--porcelain);
}

.page-about .about-cta__inner {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(22px, 3.4vw, 40px);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
  background: linear-gradient(135deg, var(--violet) 0%, var(--violet-deep) 100%);
  color: var(--porcelain);
}

.page-about .about-cta__text .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-cta__text h2 {
  margin: 0.45em 0 0.55em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.2vw, 2.05rem);
  line-height: 1.3;
}

.page-about .about-cta__text p {
  margin: 0;
  max-width: 40em;
  font-size: var(--fs-17);
  line-height: 1.78;
  color: var(--about-soft-text);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-about .copy-btn {
  min-height: 44px;
  padding: 11px 16px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.06em;
  color: var(--porcelain);
  background: transparent;
  border: 2px solid var(--porcelain);
  cursor: pointer;
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}

.page-about .copy-btn:hover,
.page-about .copy-btn:focus-visible {
  background: var(--porcelain);
  color: var(--violet-deep);
}

.page-about .copy-btn:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-about .pillar-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .gate-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .tl {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 22px;
    padding: 36px 0 0;
  }

  .page-about .tl::before {
    left: 0;
    right: 0;
    top: 10px;
    bottom: auto;
    width: auto;
    height: 2px;
  }

  .page-about .tl-item::before {
    left: 0;
    top: -36px;
  }

  .page-about .tl-text {
    max-width: none;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-about .about-chapter__grid {
    grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-about .about-chapter__head {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-about .stat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1160px) {
  .page-about .gate-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .copy-btn {
    transition: none;
  }
}
<<<END>>>