.page-about {
  --about-gap: clamp(28px, 5vw, 56px);
  --about-ring: 0 0 0 2px var(--door-orange);
  background-color: var(--cream);
  color: var(--wood);
  overflow-x: clip;
}

.page-about .breadcrumb {
  padding-top: clamp(16px, 3vw, 26px);
}

.page-about .eyebrow {
  color: var(--copper);
  letter-spacing: 0.14em;
}

.page-about .section h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.8vw, 38px);
  line-height: 1.28;
  letter-spacing: 0.03em;
  color: var(--wood);
  margin-top: 10px;
}

.page-about .section p {
  line-height: 1.85;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(44px, 7vw, 84px);
  background: linear-gradient(168deg, var(--paper) 0%, var(--cream) 58%, rgba(220, 232, 223, 0.55) 100%);
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(58% 76% at 80% 26%, rgba(255, 217, 160, 0.5), rgba(255, 217, 160, 0) 72%);
  pointer-events: none;
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: center;
}

.page-about .about-hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 6.4vw, 58px);
  line-height: 1.16;
  letter-spacing: 0.04em;
  color: var(--ink-green);
  margin-top: 14px;
}

.page-about .about-lede {
  margin-top: 20px;
  max-width: 32em;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.85;
  color: rgba(74, 46, 30, 0.88);
}

.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-about .about-hero-door {
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-about .about-hero-door svg {
  width: 100%;
  max-width: 168px;
  height: auto;
  display: block;
  filter: drop-shadow(0 18px 26px rgba(74, 46, 30, 0.16));
}

/* ---------- 01 起点 ---------- */

.page-about .about-origin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-origin-text p {
  margin-top: 16px;
  font-size: 16px;
  color: rgba(74, 46, 30, 0.86);
}

.page-about .media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-m);
  background-color: var(--moss);
}

.page-about .media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-origin-figure {
  aspect-ratio: 4 / 3;
  box-shadow: var(--shadow-2);
}

.page-about .about-origin-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(255, 217, 160, 0.22), rgba(255, 217, 160, 0) 58%);
  pointer-events: none;
}

/* ---------- 02 时间线 ---------- */

.page-about .about-timeline-figure {
  aspect-ratio: 3 / 2;
  margin-top: clamp(20px, 3vw, 30px);
  box-shadow: var(--shadow-2);
}

.page-about .timeline {
  position: relative;
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
}

.page-about .timeline-axis {
  position: absolute;
  left: 4px;
  top: 6px;
  width: 24px;
  height: calc(100% - 24px);
  pointer-events: none;
}

.page-about .timeline-item {
  position: relative;
  padding-left: 44px;
  padding-bottom: clamp(26px, 4vw, 40px);
}

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

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--copper);
  box-shadow: 0 0 0 4px rgba(176, 122, 60, 0.16);
}

.page-about .timeline-year {
  display: block;
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 700;
  color: var(--door-orange);
  line-height: 1;
  letter-spacing: 0.06em;
}

.page-about .timeline-body {
  margin-top: 10px;
}

.page-about .timeline-body h3 {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 23px);
  line-height: 1.4;
  color: var(--ink-green);
}

.page-about .timeline-body p {
  margin-top: 8px;
  font-size: 15.5px;
  color: rgba(74, 46, 30, 0.84);
  max-width: 40em;
}

/* ---------- 03 团队 ---------- */

.page-about .about-team {
  background: linear-gradient(180deg, rgba(245, 239, 230, 0) 0%, rgba(220, 232, 223, 0.42) 22%, rgba(220, 232, 223, 0.42) 78%, rgba(245, 239, 230, 0) 100%);
}

.page-about .about-team-lede {
  margin-top: 16px;
  max-width: 44em;
  font-size: 16px;
  color: rgba(74, 46, 30, 0.86);
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(26px, 4vw, 42px);
}

.page-about .team-card {
  background-color: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: clamp(20px, 3vw, 28px);
  box-shadow: var(--shadow-1);
  transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  box-shadow: var(--shadow-2);
  transform: translateY(-3px);
  border-color: rgba(176, 122, 60, 0.42);
}

.page-about .team-num {
  font-size: clamp(34px, 5vw, 48px);
  font-weight: 700;
  line-height: 1;
  color: var(--door-orange);
}

.page-about .team-num span {
  font-size: 13px;
  margin-left: 6px;
  color: var(--copper);
}

.page-about .team-role {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 23px);
  color: var(--ink-green);
  margin-top: 10px;
}

.page-about .team-desc {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(74, 46, 30, 0.84);
}

.page-about .team-card .accordion {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.page-about .team-card .accordion-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--door-orange);
  background: none;
  border: 0;
  padding: 6px 0;
  cursor: pointer;
}

.page-about .team-card .accordion-trigger::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--copper);
}

.page-about .team-card .accordion-trigger[aria-expanded="true"]::after {
  content: "−";
}

.page-about .team-card .accordion-trigger:focus-visible {
  outline: none;
  box-shadow: var(--about-ring);
  border-radius: var(--radius-s);
}

.page-about .team-card .accordion-panel ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.page-about .team-card .accordion-panel li {
  font-size: 14px;
  line-height: 1.78;
  color: rgba(74, 46, 30, 0.82);
  margin-bottom: 6px;
}

.page-about .team-card .accordion-panel li:last-child {
  margin-bottom: 0;
}

/* ---------- 04 四条门槛 ---------- */

.page-about .principle-list {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
}

.page-about .principle {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: clamp(12px, 3vw, 30px);
  padding: clamp(18px, 3vw, 28px) clamp(6px, 2vw, 18px);
  border-top: 1px solid var(--line);
  transition: background-color 0.32s var(--ease);
}

.page-about .principle:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .principle:hover {
  background-color: rgba(220, 232, 223, 0.55);
}

.page-about .principle-idx {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--copper);
  padding-top: 6px;
}

.page-about .principle h3 {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.4;
  color: var(--ink-green);
}

.page-about .principle p {
  margin-top: 8px;
  font-size: 15.5px;
  color: rgba(74, 46, 30, 0.84);
  max-width: 44em;
}

.page-about .principle-link {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--door-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 98, 44, 0.35);
  padding-bottom: 2px;
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-about .principle-link:hover {
  border-bottom-color: var(--door-orange);
  transform: translateX(2px);
}

.page-about .principle-link:focus-visible,
.page-about .about-cta-actions .btn:focus-visible {
  outline: none;
  box-shadow: var(--about-ring);
  border-radius: var(--radius-s);
}

/* ---------- 05 服务半径 ---------- */

.page-about .about-reach {
  background-color: var(--moss);
}

.page-about .about-reach-lede {
  margin-top: 16px;
  max-width: 46em;
  font-size: 16px;
  color: rgba(31, 77, 58, 0.9);
}

.page-about .reach-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 4vw, 36px);
  margin-top: clamp(24px, 4vw, 40px);
  align-items: stretch;
}

.page-about .stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .stat {
  background-color: rgba(255, 252, 247, 0.76);
  border: 1px solid rgba(31, 77, 58, 0.14);
  border-radius: var(--radius-m);
  padding: 16px 14px 14px;
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .stat:hover,
.page-about .stat:focus-within {
  background-color: var(--paper);
  border-color: rgba(176, 122, 60, 0.5);
  box-shadow: var(--shadow-2);
}

.page-about .stat-num {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink-green);
}

.page-about .stat-label {
  margin-top: 6px;
  font-size: 14px;
  color: var(--wood);
}

.page-about .stat-note {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: rgba(74, 46, 30, 0.62);
  transition: color 0.3s var(--ease);
}

.page-about .stat:hover .stat-note,
.page-about .stat:focus-within .stat-note {
  color: var(--wood);
}

.page-about .about-reach-figure {
  aspect-ratio: 14 / 9;
  box-shadow: var(--shadow-2);
}

.page-about .about-reach-foot {
  margin-top: clamp(20px, 3vw, 30px);
  max-width: 46em;
  font-size: 15px;
  color: rgba(31, 77, 58, 0.86);
}

/* ---------- 06 用户反馈 ---------- */

.page-about .recogn-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .recogn-card {
  border-radius: var(--radius-l);
  padding: clamp(24px, 4vw, 40px);
  transition: transform 0.32s var(--ease), box-shadow 0.32s var(--ease);
}

.page-about .recogn-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
}

.page-about .recogn-card--score {
  background-color: var(--paper);
  border: 1px solid var(--line);
}

.page-about .recogn-card--award {
  background-color: var(--ink-green);
  color: var(--cream);
}

.page-about .recogn-kicker {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--copper);
}

.page-about .recogn-card--award .recogn-kicker {
  color: var(--door-light);
}

.page-about .recogn-num {
  font-size: clamp(48px, 9vw, 76px);
  font-weight: 700;
  line-height: 1;
  color: var(--door-orange);
  margin-top: 14px;
}

.page-about .recogn-num span {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--copper);
  margin-left: 4px;
}

.page-about .recogn-award {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 32px);
  line-height: 1.3;
  color: var(--cream);
  margin-top: 16px;
}

.page-about .recogn-body {
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(74, 46, 30, 0.84);
  max-width: 34em;
}

.page-about .recogn-card--award .recogn-body {
  color: rgba(245, 239, 230, 0.82);
}

/* ---------- 收束 ---------- */

.page-about .about-cta {
  padding-bottom: clamp(56px, 8vw, 96px);
}

.page-about .about-cta-inner {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-l);
  background-color: var(--night);
  color: var(--cream);
  padding: clamp(26px, 5vw, 56px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: center;
}

.page-about .about-cta-inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--door-orange), var(--amber), var(--door-light));
}

.page-about .about-cta-inner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(50% 90% at 92% 100%, rgba(242, 183, 5, 0.16), rgba(242, 183, 5, 0) 70%);
  pointer-events: none;
}

.page-about .about-cta-text {
  position: relative;
  z-index: 1;
}

.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.3;
  color: var(--cream);
  margin-top: 10px;
}

.page-about .about-cta-text p {
  margin-top: 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(245, 239, 230, 0.78);
  max-width: 40em;
}

.page-about .about-cta-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta-actions .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-s);
  font-size: 15px;
  text-decoration: none;
  transition: transform 0.24s var(--ease), background-color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .about-cta-actions .btn--ghost {
  border: 1px solid rgba(245, 239, 230, 0.48);
  color: var(--cream);
  background-color: transparent;
}

.page-about .about-cta-actions .btn--ghost:hover {
  border-color: var(--cream);
  background-color: rgba(245, 239, 230, 0.08);
}

.page-about .about-cta-actions .btn--primary:hover {
  transform: translateY(-2px);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .stat-grid {
    gap: 14px;
  }

  .page-about .stat {
    padding: 20px 18px 16px;
  }
}

@media (min-width: 860px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.58fr);
    gap: clamp(32px, 6vw, 72px);
  }

  .page-about .about-hero-door svg {
    max-width: 220px;
  }

  .page-about .about-origin-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .timeline-item {
    padding-left: 68px;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .timeline-axis {
    left: 8px;
    width: 28px;
  }

  .page-about .timeline-item::before {
    left: 17px;
    top: 11px;
  }

  .page-about .team-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 20px 24px;
  }

  .page-about .team-card:nth-child(1) {
    grid-column: 1 / span 6;
  }

  .page-about .team-card:nth-child(2) {
    grid-column: 8 / span 5;
    margin-top: 72px;
  }

  .page-about .team-card:nth-child(3) {
    grid-column: 2 / span 6;
  }

  .page-about .team-card:nth-child(4) {
    grid-column: 9 / span 4;
    margin-top: 56px;
  }

  .page-about .principle {
    grid-template-columns: 48px minmax(0, 1fr);
  }

  .page-about .reach-grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-about .recogn-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 24px;
  }

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

  .page-about .about-cta-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero-copy h1 {
    max-width: 15em;
  }

  .page-about .stat-grid {
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-card,
  .page-about .stat,
  .page-about .recogn-card,
  .page-about .principle,
  .page-about .principle-link,
  .page-about .about-cta-actions .btn,
  .page-about .team-card .accordion-trigger {
    transition: none;
  }

  .page-about .team-card:hover,
  .page-about .team-card:focus-within,
  .page-about .recogn-card:hover,
  .page-about .principle-link:hover,
  .page-about .about-cta-actions .btn--primary:hover {
    transform: none;
  }
}
<<<END>>>