.page-about {
  --about-rail: 264px;
  --about-gap: clamp(26px, 4vw, 62px);
  --about-cut: 22px;
  padding-bottom: clamp(48px, 7vw, 96px);
  background:
    radial-gradient(1100px 520px at 88% -8%, rgba(47, 175, 158, 0.13), transparent 62%),
    radial-gradient(900px 460px at 2% 6%, rgba(214, 168, 75, 0.09), transparent 58%);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: calc(var(--ky-header-h) + 18px);
}

.page-about .ky-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--ky-slate);
}

.page-about .ky-breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--ky-line-strong);
}

.page-about .ky-breadcrumb a {
  color: var(--ky-slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ky-ease), border-color 0.16s var(--ky-ease);
}

.page-about .ky-breadcrumb a:hover,
.page-about .ky-breadcrumb a:focus-visible {
  color: var(--ky-teal-bright);
  border-bottom-color: var(--ky-teal);
}

.page-about .ky-breadcrumb [aria-current="page"] {
  color: var(--ky-ice);
}

/* ---------- 首屏分屏 ---------- */
.page-about .about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding-top: clamp(22px, 3vw, 38px);
}

.page-about .about-hero__visual {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--ky-panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}

.page-about .about-hero__visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.82;
}

.page-about .about-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, rgba(11, 27, 51, 0.15) 0%, rgba(6, 16, 31, 0.72) 100%);
  pointer-events: none;
}

.page-about .about-hero__stamp {
  position: absolute;
  left: 18px;
  bottom: 18px;
  z-index: 2;
  padding: 6px 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ky-gold-lift);
  background: rgba(6, 16, 31, 0.72);
  border-left: 2px solid var(--ky-gold);
  backdrop-filter: blur(4px);
}

.page-about .about-hero__intro {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 4px 0 0;
}

.page-about .about-hero__intro .ky-eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ky-teal);
}

.page-about .about-hero__intro .ky-display {
  margin: 0;
  font-size: clamp(28px, 5vw, 46px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ky-ice);
}

.page-about .about-hero__intro .ky-lede {
  margin: 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ky-ice-dim);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 14px;
  margin: 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--ky-line);
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: var(--ky-slate);
}

.page-about .about-hero__facts .ky-mono {
  font-size: 20px;
  font-weight: 700;
  color: var(--ky-gold-lift);
  letter-spacing: -0.01em;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 4px;
}

/* ---------- 主体：左目录右叙事 ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  margin-top: clamp(40px, 6vw, 78px);
}

.page-about .about-rail {
  display: none;
  align-self: start;
}

.page-about .about-rail__label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ky-slate);
}

.page-about .about-rail__nav .ky-anchor-list ol {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-rail__nav a {
  display: block;
  padding: 8px 12px 8px 14px;
  font-size: 14px;
  color: var(--ky-slate);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.16s var(--ky-ease), border-color 0.16s var(--ky-ease), background 0.16s var(--ky-ease);
}

.page-about .about-rail__nav a:hover,
.page-about .about-rail__nav a:focus-visible {
  color: var(--ky-ice);
  border-left-color: var(--ky-teal);
}

.page-about .about-rail__nav a[aria-current="true"] {
  color: var(--ky-gold-lift);
  border-left-color: var(--ky-gold);
  background: linear-gradient(90deg, rgba(214, 168, 75, 0.12), transparent);
}

.page-about .about-rail__years {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--ky-line);
}

.page-about .about-rail__years ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--ky-slate);
}

.page-about .about-rail__years li {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .about-rail__years .ky-mono {
  min-width: 46px;
  font-size: 12px;
  color: var(--ky-amber);
}

.page-about .about-rail__tech {
  margin-top: 28px;
  height: 54px;
  background-image: repeating-linear-gradient(118deg, rgba(47, 175, 158, 0.22) 0 3px, transparent 3px 15px);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 26px 100%, 0 62%);
  opacity: 0.7;
}

/* ---------- 章节 ---------- */
.page-about .about-flow {
  display: grid;
  gap: clamp(44px, 6vw, 84px);
  min-width: 0;
}

.page-about .about-section {
  scroll-margin-top: calc(var(--ky-header-h) + 20px);
  min-width: 0;
}

.page-about .about-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-about .about-section__index {
  flex: none;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--ky-gold);
}

.page-about .about-section .ky-h2 {
  margin: 0;
  font-size: clamp(22px, 3.2vw, 30px);
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--ky-ice);
}

.page-about .about-section .ky-rule {
  margin: 16px 0 22px;
  height: 1px;
  background: linear-gradient(90deg, var(--ky-gold), var(--ky-teal) 45%, transparent 92%);
  opacity: 0.6;
}

.page-about .about-section__body p {
  margin: 0 0 16px;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ky-ice-dim);
}

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

/* ---------- 引文卡 ---------- */
.page-about .about-quote {
  margin: 28px 0;
  padding: 24px 26px;
  background: var(--ky-panel);
  border-left: 3px solid var(--ky-teal);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-about .about-quote blockquote {
  margin: 0 0 12px;
  font-size: clamp(18px, 2.4vw, 22px);
  line-height: 1.6;
  color: var(--ky-ice);
  letter-spacing: -0.01em;
}

.page-about .about-quote figcaption {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ky-slate);
}

/* ---------- 经幡分隔纹理 ---------- */
.page-about .about-band {
  height: 40px;
  margin: 28px 0;
  background-image: repeating-linear-gradient(115deg, rgba(214, 168, 75, 0.2) 0 2px, rgba(47, 175, 158, 0.14) 2px 4px, transparent 4px 18px);
  clip-path: polygon(0 0, 100% 0, calc(100% - 40px) 100%, 0 100%);
  opacity: 0.75;
}

/* ---------- 三条原则 ---------- */
.page-about .about-principles {
  display: grid;
  gap: 2px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-principles__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 22px 18px 22px 0;
  border-top: 1px solid var(--ky-line);
}

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

.page-about .about-principles__num {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--ky-teal);
  opacity: 0.75;
}

.page-about .about-principles .ky-h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--ky-gold-lift);
  letter-spacing: 0.01em;
}

.page-about .about-principles p {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ky-ice-dim);
}

/* ---------- 时间轴 ---------- */
.page-about .about-tl__figure {
  margin: 22px 0 26px;
}

.page-about .about-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}

.page-about .about-chips .ky-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  font-size: 13px;
  font-family: var(--ky-font-mono);
  color: var(--ky-slate);
  background: rgba(18, 40, 70, 0.7);
  border: 1px solid var(--ky-line-strong);
  border-radius: 0;
  cursor: pointer;
  transition: color 0.16s var(--ky-ease), border-color 0.16s var(--ky-ease), background 0.16s var(--ky-ease);
}

.page-about .about-chips .ky-chip:hover,
.page-about .about-chips .ky-chip:focus-visible {
  color: var(--ky-ice);
  border-color: var(--ky-teal);
}

.page-about .about-chips .ky-chip[aria-pressed="true"] {
  color: var(--ky-night);
  background: var(--ky-teal);
  border-color: var(--ky-teal);
  font-weight: 700;
}

.page-about .about-chips .ky-chip__count {
  font-size: 11px;
  opacity: 0.75;
}

.page-about .about-tl {
  position: relative;
  display: grid;
  gap: 28px;
  margin: 0;
  padding: 0 0 0 24px;
  list-style: none;
  border-left: 1px solid var(--ky-line-strong);
}

.page-about .about-tl__item {
  position: relative;
  display: grid;
  gap: 6px;
}

.page-about .about-tl__item[hidden] {
  display: none !important;
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--ky-gold);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px rgba(214, 168, 75, 0.14);
}

.page-about .about-tl__year {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ky-amber);
}

.page-about .about-tl .ky-h3 {
  margin: 0 0 6px;
  font-size: 17px;
  color: var(--ky-ice);
}

.page-about .about-tl__body p {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ky-ice-dim);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.page-about .about-team__card {
  padding: 22px 20px;
  background: var(--ky-panel);
  border-top: 2px solid var(--ky-teal);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .about-team__card:nth-child(2) {
  border-top-color: var(--ky-gold);
}

.page-about .about-team__card:nth-child(3) {
  border-top-color: var(--ky-rose);
}

.page-about .about-team__card .ky-tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 9px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ky-teal-bright);
  border: 1px solid rgba(47, 175, 158, 0.4);
}

.page-about .about-team__card:nth-child(2) .ky-tag {
  color: var(--ky-gold-lift);
  border-color: rgba(214, 168, 75, 0.42);
}

.page-about .about-team__card:nth-child(3) .ky-tag {
  color: var(--ky-rose);
  border-color: rgba(217, 92, 122, 0.42);
}

.page-about .about-team__card .ky-h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--ky-ice);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ky-ice-dim);
}

.page-about .about-team__figure {
  margin: 26px 0;
}

/* ---------- 手风琴 ---------- */
.page-about .about-flow__acc {
  margin-top: 6px;
}

.page-about .about-flow__acc .ky-accordion__item {
  border-top: 1px solid var(--ky-line);
}

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

.page-about .about-flow__acc .ky-accordion__trigger {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 16px 4px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  text-align: left;
  color: var(--ky-ice);
  background: none;
  border: 0;
  cursor: pointer;
  transition: color 0.16s var(--ky-ease);
}

.page-about .about-flow__acc .ky-accordion__trigger:hover,
.page-about .about-flow__acc .ky-accordion__trigger:focus-visible {
  color: var(--ky-teal-bright);
}

.page-about .about-flow__acc .ky-accordion__trigger .ky-mono {
  font-size: 12px;
  color: var(--ky-gold);
}

.page-about .about-flow__acc .ky-accordion__trigger[aria-expanded="true"]::after {
  content: "−";
  margin-left: auto;
  font-size: 18px;
  color: var(--ky-teal);
}

.page-about .about-flow__acc .ky-accordion__trigger[aria-expanded="false"]::after {
  content: "+";
  margin-left: auto;
  font-size: 18px;
  color: var(--ky-slate);
}

.page-about .about-flow__acc .ky-accordion__panel {
  padding: 0 4px 18px 30px;
}

.page-about .about-flow__acc .ky-accordion__panel p {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ky-ice-dim);
}

/* ---------- 认证 ---------- */
.page-about .about-cert {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 24px;
}

.page-about .about-cert__badge {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 22px 20px;
  background: linear-gradient(140deg, rgba(214, 168, 75, 0.14), rgba(18, 40, 70, 0.9));
  border: 1px solid rgba(214, 168, 75, 0.3);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-about .about-cert__badge svg {
  flex: none;
  width: 54px;
  height: 54px;
  color: var(--ky-gold);
}

.page-about .about-cert__badge-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ky-ice-dim);
}

.page-about .about-cert__meta {
  padding: 22px 20px;
  background: var(--ky-panel);
  border: 1px solid var(--ky-line);
}

.page-about .about-cert__meta dl {
  display: grid;
  gap: 14px;
  margin: 0;
}

.page-about .about-cert__meta dt {
  margin-bottom: 4px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ky-slate);
}

.page-about .about-cert__meta dd {
  margin: 0;
  font-size: 14px;
  color: var(--ky-ice);
  word-break: break-all;
}

.page-about .about-cert__meta .ky-mono {
  font-size: 13px;
  color: var(--ky-teal-bright);
}

/* ---------- 收尾 ---------- */
.page-about .about-close {
  padding: 28px 22px;
  background: var(--ky-panel);
  border-left: 3px solid var(--ky-gold);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-about .about-close .ky-h2 {
  margin: 0 0 14px;
  font-size: clamp(20px, 2.8vw, 26px);
  line-height: 1.36;
  color: var(--ky-ice);
}

.page-about .about-close > p {
  margin: 0 0 20px;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ky-ice-dim);
}

.page-about .about-close__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--ky-line);
}

.page-about .about-close__links .ky-link {
  font-size: 15px;
  color: var(--ky-teal-bright);
  text-decoration: none;
  border-bottom: 1px solid rgba(111, 231, 216, 0.35);
  padding-bottom: 2px;
  transition: color 0.16s var(--ky-ease), border-color 0.16s var(--ky-ease);
}

.page-about .about-close__links .ky-link:hover,
.page-about .about-close__links .ky-link:focus-visible {
  color: var(--ky-gold-lift);
  border-bottom-color: var(--ky-gold);
}

.page-about .about-close__contact {
  padding-top: 20px;
}

.page-about .about-close__contact .ky-copy {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  background: rgba(47, 175, 158, 0.12);
  border: 1px solid rgba(47, 175, 158, 0.42);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.16s var(--ky-ease), border-color 0.16s var(--ky-ease);
}

.page-about .about-close__contact .ky-copy:hover,
.page-about .about-close__contact .ky-copy:focus-visible {
  background: rgba(47, 175, 158, 0.22);
  border-color: var(--ky-teal-bright);
}

.page-about .about-close__contact .ky-copy__value {
  font-size: 13px;
  color: var(--ky-ice);
  word-break: break-all;
}

.page-about .about-close__contact .ky-copy__label {
  flex: none;
  font-size: 12px;
  color: var(--ky-teal-bright);
}

.page-about .about-close__contact .ky-copy[data-copied="true"] .ky-copy__label {
  color: var(--ky-gold-lift);
}

.page-about .about-close__hours {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--ky-slate);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .about-principles__item {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 20px;
  }

  .page-about .about-principles__num {
    font-size: 26px;
  }
}

@media (min-width: 900px) {
  .page-about .about-body {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: calc(var(--ky-header-h) + 26px);
  }

  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: 0;
    align-items: stretch;
  }

  .page-about .about-hero__visual {
    aspect-ratio: auto;
    min-height: 540px;
  }

  .page-about .about-hero__intro {
    padding: 8px 0 8px clamp(26px, 3.4vw, 48px);
    justify-content: center;
  }

  .page-about .about-team {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-tl__item {
    grid-template-columns: 86px minmax(0, 1fr);
    gap: 18px;
  }

  .page-about .about-tl__year {
    padding-top: 2px;
  }

  .page-about .about-close {
    padding: 36px 34px;
  }
}

@media (max-width: 899px) {
  .page-about .about-hero__visual {
    order: 2;
  }

  .page-about .about-hero__intro {
    order: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-rail__nav a,
  .page-about .about-chips .ky-chip,
  .page-about .about-close__links .ky-link,
  .page-about .about-close__contact .ky-copy {
    transition: none;
  }
}
<<<END>>>