.page-about {
  --about-t1: rgba(192, 57, 43, 0.14);
  --about-t2: rgba(192, 57, 43, 0.28);
  --about-t3: rgba(192, 57, 43, 0.72);
  --about-t4: #C0392B;
  --about-soft: #F4EEE3;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  padding-top: clamp(14px, 2.4vw, 22px);
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-ui);
  font-size: var(--fs-12);
  color: var(--stone);
}

.page-about .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--line-strong);
}

.page-about .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .breadcrumb-link:hover {
  color: var(--maple-deep);
  border-bottom-color: var(--maple-deep);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(20px, 3.5vw, 34px) 0 var(--section-y);
  background:
    radial-gradient(120% 90% at 88% 0%, var(--maple-tint) 0%, rgba(247, 229, 225, 0) 62%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper) 74%, var(--pine-tint) 200%);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}

.page-about .about-hero-annot {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: var(--fs-12);
  letter-spacing: 0.3em;
  color: var(--stone);
  margin: 0 0 12px;
}

.page-about .about-hero-title {
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1.12;
  font-size: clamp(2.1rem, 7.4vw, 4.2rem);
  margin: 0 0 18px;
  color: var(--ink);
  text-wrap: balance;
}

.page-about .about-hero-lead {
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--ink);
  margin: 0 0 clamp(20px, 3vw, 28px);
  max-width: 46ch;
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(20px, 3vw, 28px);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.page-about .about-stat-num {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--fs-34);
  line-height: 1;
  color: var(--maple);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stat-num em {
  font-style: normal;
  font-size: var(--fs-20);
  margin-left: 1px;
}

.page-about .about-stat-unit {
  font-family: var(--font-ui);
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-stat-note {
  font-family: var(--font-ui);
  font-size: var(--fs-12);
  color: var(--stone);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-hero-figure {
  margin: 0;
  border-radius: var(--r-card);
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, var(--maple-tint), var(--pine-tint));
}

.page-about .about-hero-figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

/* ---------- 通用章节 ---------- */
.page-about .section {
  padding: clamp(34px, 5vw, 62px) 0;
}

.page-about .divider {
  height: 1px;
  background: var(--line);
}

.page-about .section-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 16px;
}

.page-about .index-badge {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--r-tag);
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--fs-14);
  font-variant-numeric: tabular-nums;
  box-shadow: 0 0 0 4px rgba(210, 160, 60, 0.16);
}

.page-about .section-kicker {
  margin: 0 0 4px;
  font-family: var(--font-ui);
  font-size: var(--fs-12);
  letter-spacing: 0.22em;
  color: var(--stone);
  text-transform: uppercase;
}

.page-about .section-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: 0.01em;
  line-height: 1.24;
  font-size: clamp(1.6rem, 4.4vw, 2.125rem);
  color: var(--pine);
}

.page-about .section-lead {
  font-size: var(--fs-16);
  line-height: 1.85;
  margin: 0 0 clamp(20px, 3vw, 28px);
  max-width: 62ch;
  color: var(--ink);
}

.page-about .about-inline-link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(92, 124, 158, 0.45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-inline-link:hover {
  color: var(--maple-deep);
  border-bottom-color: var(--maple-deep);
}

/* ---------- 01 品牌由来 ---------- */
.page-about .about-origin {
  background: var(--paper);
}

.page-about .about-origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 42px);
}

.page-about .about-origin-text .section-head {
  margin-bottom: 18px;
}

.page-about .about-paragraph {
  font-size: var(--fs-16);
  line-height: 1.85;
  margin: 0 0 16px;
  max-width: 62ch;
}

.page-about .about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-about .about-tags .tag {
  font-family: var(--font-ui);
  font-size: var(--fs-12);
  padding: 6px 14px;
  border-radius: var(--r-tag);
}

.page-about .about-origin-aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .about-quote {
  position: relative;
  padding: 24px 22px 20px;
  border-radius: var(--r-card);
  background: var(--pine);
  color: #fff;
}

.page-about .about-quote::after {
  content: "";
  position: absolute;
  left: 22px;
  bottom: -9px;
  width: 18px;
  height: 18px;
  background: var(--pine);
  transform: rotate(45deg);
  border-radius: 3px;
}

.page-about .about-quote-text {
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.75;
}

.page-about .about-quote-note {
  margin: 0;
  font-family: var(--font-ui);
  font-size: var(--fs-12);
  color: var(--pine-tint);
  line-height: 1.6;
}

.page-about .about-facts {
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--paper);
}

.page-about .about-fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-fact:last-child {
  border-bottom: 0;
}

.page-about .about-fact-label {
  font-family: var(--font-ui);
  font-size: var(--fs-12);
  color: var(--stone);
  flex: 0 0 auto;
}

.page-about .about-fact-value {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-14);
  color: var(--maple-deep);
  text-align: right;
}

/* ---------- 02 对照表 ---------- */
.page-about .about-compare {
  background: var(--about-soft);
}

.page-about .about-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-card);
  background: var(--paper);
  -webkit-overflow-scrolling: touch;
}

.page-about .about-table-wrap:focus-visible {
  outline: 2px solid var(--mist);
  outline-offset: 2px;
}

.page-about .about-table {
  width: 100%;
  min-width: 680px;
  border-collapse: separate;
  border-spacing: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
}

.page-about .about-table caption {
  caption-side: top;
  text-align: left;
  padding: 14px 18px 12px;
  font-family: var(--font-ui);
  font-size: var(--fs-12);
  color: var(--stone);
  letter-spacing: 0.06em;
}

.page-about .about-table thead th {
  background: var(--pine);
  color: #fff;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-14);
  text-align: left;
  padding: 14px 16px;
  white-space: nowrap;
  border-bottom: 1px solid var(--pine);
}

.page-about .about-table tbody th,
.page-about .about-table tbody td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.page-about .about-table tbody th {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--pine);
  white-space: nowrap;
  background: var(--paper);
}

.page-about .about-table tbody tr:nth-child(even) th,
.page-about .about-table tbody tr:nth-child(even) td {
  background: var(--pine-tint);
}

.page-about .about-table tbody tr:last-child th,
.page-about .about-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-about .about-table thead th:first-child,
.page-about .about-table tbody th:first-child {
  position: sticky;
  left: 0;
  z-index: 2;
  border-right: 1px solid var(--line-strong);
}

.page-about .about-table thead th:first-child {
  z-index: 3;
  background: var(--pine);
  border-right-color: rgba(255, 255, 255, 0.22);
}

.page-about .about-table-note {
  margin: 14px 0 0;
  font-family: var(--font-ui);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--stone);
  max-width: 70ch;
}

/* ---------- 03 资质分级 ---------- */
.page-about .about-creds {
  background: var(--paper);
}

.page-about .cred-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: clamp(24px, 4vw, 38px);
}

.page-about .cred-stack .accordion-item {
  border: 1px solid var(--line);
  border-left: 6px solid var(--about-t1);
  border-radius: var(--r-card);
  background: var(--paper);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .cred-stack .accordion-item:hover {
  transform: translateY(-2px);
}

.page-about .cred-stack .accordion-item:nth-child(1) { border-left-color: var(--about-t1); }
.page-about .cred-stack .accordion-item:nth-child(2) { border-left-color: var(--about-t2); }
.page-about .cred-stack .accordion-item:nth-child(3) { border-left-color: var(--about-t3); }
.page-about .cred-stack .accordion-item:nth-child(4) { border-left-color: var(--about-t4); }

.page-about .cred-stack .accordion-item[data-open="true"] {
  background: linear-gradient(180deg, rgba(247, 229, 225, 0.55), var(--paper) 70%);
}

.page-about .cred-trigger {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  width: 100%;
  padding: 16px 18px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-ui);
  color: var(--ink);
}

.page-about .cred-trigger:focus-visible {
  outline: 2px solid var(--mist);
  outline-offset: -2px;
  border-radius: var(--r-card);
}

.page-about .cred-level {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--fs-20);
  letter-spacing: 0.06em;
  color: var(--maple-deep);
  min-width: 3.4em;
}

.page-about .cred-title {
  flex: 1 1 12ch;
  font-size: var(--fs-14);
  color: var(--ink);
  line-height: 1.6;
}

.page-about .cred-tag {
  font-size: var(--fs-12);
  padding: 4px 12px;
  border-radius: var(--r-tag);
  white-space: nowrap;
}

.page-about .cred-list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: grid;
  gap: 10px;
}

.page-about .cred-list li {
  position: relative;
  padding-left: 20px;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--ink);
}

.page-about .cred-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: var(--r-tag);
  background: var(--gold);
}

.page-about .cred-list strong {
  font-family: var(--font-ui);
  color: var(--pine);
  margin-right: 4px;
}

.page-about .cred-figure {
  margin: 0;
  border-radius: var(--r-card);
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--pine-tint), var(--maple-tint));
}

.page-about .cred-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

/* ---------- 04 时间轴 ---------- */
.page-about .about-timeline-section {
  background: var(--pine-tint);
}

.page-about .about-timeline {
  position: relative;
  padding-left: 26px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 18px;
  bottom: 18px;
  width: 1px;
  background: var(--line-strong);
}

.page-about .about-timeline .accordion-item {
  position: relative;
  border-radius: var(--r-data);
}

.page-about .about-timeline .accordion-item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 20px;
  width: 11px;
  height: 11px;
  border-radius: var(--r-tag);
  background: var(--paper);
  border: 2px solid var(--gold);
  box-sizing: border-box;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-timeline .accordion-item[data-open="true"]::before {
  background: var(--maple);
  border-color: var(--maple);
}

.page-about .tl-trigger {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  width: 100%;
  padding: 12px 14px;
  background: none;
  border: 0;
  border-radius: var(--r-data);
  text-align: left;
  cursor: pointer;
  font-family: var(--font-ui);
  color: var(--ink);
  transition: background var(--dur) var(--ease);
}

.page-about .tl-trigger:hover {
  background: rgba(252, 248, 242, 0.75);
}

.page-about .tl-trigger:focus-visible {
  outline: 2px solid var(--mist);
  outline-offset: -2px;
}

.page-about .accordion-item[data-open="true"] .tl-trigger {
  background: var(--paper);
}

.page-about .tl-stage {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--fs-12);
  letter-spacing: 0.2em;
  color: var(--maple);
  writing-mode: vertical-rl;
  text-orientation: upright;
  line-height: 1;
  padding: 4px 0;
}

.page-about .tl-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-16);
  color: var(--pine);
  line-height: 1.5;
}

.page-about .about-timeline .accordion-panel-inner {
  padding: 4px 16px 16px;
  background: var(--paper);
  border-radius: 0 0 var(--r-data) var(--r-data);
}

.page-about .about-timeline .accordion-panel-inner p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--ink);
  max-width: 62ch;
}

.page-about .about-timeline-more {
  margin: 18px 0 0;
  font-family: var(--font-ui);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- 05 团队 ---------- */
.page-about .about-team {
  background: var(--paper);
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .about-team-figure {
  margin: 0;
  border-radius: var(--r-card);
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, var(--pine-tint), var(--about-soft));
}

.page-about .about-team-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 5 / 6;
}

.page-about .about-team-text .section-lead {
  margin-bottom: 22px;
}

.page-about .about-stack-block {
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  padding: 18px;
  background: var(--paper);
  margin-bottom: 22px;
}

.page-about .about-stack-title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-14);
  color: var(--pine);
}

.page-about .about-stack-title small {
  font-family: var(--font-ui);
  font-weight: 400;
  font-size: var(--fs-12);
  color: var(--stone);
  margin-left: 4px;
}

.page-about .about-stack {
  display: flex;
  width: 100%;
  height: 42px;
  border-radius: var(--r-tag);
  overflow: hidden;
  background: var(--pine-tint);
}

.page-about .about-stack .seg {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: var(--fs-12);
  color: #fff;
  font-variant-numeric: tabular-nums;
  min-width: 0;
  overflow: hidden;
}

.page-about .seg-1 { background: var(--maple); }
.page-about .seg-2 { background: var(--maple-deep); }
.page-about .seg-3 { background: var(--pine); }
.page-about .seg-4 { background: var(--mist); }
.page-about .seg-5 { background: var(--gold); color: var(--ink); }

.page-about .about-legend {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin: 12px 0 0;
  padding: 0;
  font-family: var(--font-ui);
  font-size: var(--fs-12);
  color: var(--stone);
}

.page-about .about-legend li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.page-about .legend-dot {
  width: 9px;
  height: 9px;
  border-radius: var(--r-data);
  flex: 0 0 auto;
}

.page-about .about-team-points {
  display: grid;
  gap: 12px;
}

.page-about .about-point {
  display: grid;
  grid-template-columns: 3.6em 1fr;
  gap: 12px;
  align-items: start;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-about .about-point-num {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--fs-14);
  color: var(--maple);
  letter-spacing: 0.1em;
}

.page-about .about-point p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 06 规范与认可 ---------- */
.page-about .about-standard {
  background: var(--about-soft);
}

.page-about .about-standard-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: clamp(24px, 4vw, 36px);
}

.page-about .about-standard-card {
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: var(--paper);
  padding: 20px;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-standard-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.page-about .about-standard-card .card-title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-20);
  color: var(--pine);
}

.page-about .about-standard-card .card-text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--ink);
}

.page-about .about-cta {
  display: grid;
  gap: 16px;
  padding: clamp(22px, 3.6vw, 32px);
  border-radius: var(--r-card);
  background: var(--pine);
  color: #fff;
  border-left: 8px solid var(--maple);
}

.page-about .about-cta-title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--fs-26);
  line-height: 1.35;
  color: #fff;
}

.page-about .about-cta-sub {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--pine-tint);
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

  .page-about .about-cta {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 22px;
  }

  .page-about .about-hero-figure img {
    aspect-ratio: 3 / 4;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: 7fr 5fr;
    gap: clamp(32px, 4vw, 56px);
  }

  .page-about .about-origin-grid {
    grid-template-columns: 7fr 5fr;
    gap: clamp(32px, 4vw, 56px);
  }

  .page-about .about-team-grid {
    grid-template-columns: 4fr 7fr;
    gap: clamp(32px, 4vw, 52px);
  }

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

  .page-about .about-point {
    grid-template-columns: 4em 1fr;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero-stats {
    gap: 18px;
  }

  .page-about .about-stat-num {
    font-size: var(--fs-48);
  }
}

@media (max-width: 480px) {
  .page-about .about-hero-actions .btn,
  .page-about .about-cta-actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }

  .page-about .about-stack {
    height: 34px;
  }

  .page-about .about-stack .seg {
    font-size: 10px;
  }

  .page-about .cred-level {
    font-size: var(--fs-16);
    min-width: 2.8em;
  }
}
<<<PAGE_CSS_END>>>