.page-about {
  --about-rail-width: 224px;
  --about-hairline: 1px solid var(--kw-line);
  display: block;
  background: var(--kw-white);
  color: var(--kw-seed);
}

/* ---------- 面包屑 ---------- */
.page-about .kw-breadcrumb {
  padding-top: clamp(14px, 2vw, 22px);
  padding-bottom: clamp(10px, 1.6vw, 16px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--kw-green);
  color: var(--kw-seed);
  padding: clamp(30px, 5vw, 62px) 0 clamp(44px, 7vw, 92px);
  border-bottom: 1px solid var(--kw-brown-deep);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(20, 17, 13, 0.09) 1px, transparent 1px),
    linear-gradient(rgba(20, 17, 13, 0.09) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-about .about-hero__lede .kw-display {
  font-size: clamp(2.2rem, 5.4vw, 4.3rem);
  line-height: 1.06;
  margin: 10px 0 0;
  max-width: 15em;
}

.page-about .about-hero__lede .kw-lede {
  margin-top: clamp(16px, 2.4vw, 26px);
  max-width: 34em;
  color: var(--kw-brown-deep);
}

.page-about .about-hero__lede .kw-cta-row {
  margin-top: clamp(20px, 3vw, 32px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--kw-brown-deep);
  background: var(--kw-white);
}

.page-about .about-figure {
  padding: clamp(16px, 2.4vw, 24px);
  border-right: var(--about-hairline);
  border-bottom: var(--about-hairline);
}

.page-about .about-figure:nth-child(2n) {
  border-right: 0;
}

.page-about .about-figure:nth-child(n + 3) {
  border-bottom: 0;
}

.page-about .about-figure__num {
  display: block;
  font-family: var(--kw-mono);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--kw-brown-deep);
  line-height: 1.2;
}

.page-about .about-figure__label {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  color: var(--kw-moss);
}

/* ---------- 主体两栏 ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  padding-top: clamp(28px, 4vw, 56px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

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

.page-about .about-body__main {
  min-width: 0;
}

/* ---------- 右侧时间轴 ---------- */
.page-about .about-rail {
  border-top: var(--about-hairline);
  padding-top: 14px;
}

.page-about .about-rail__title {
  margin: 0 0 12px;
  color: var(--kw-moss);
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  font-size: 14px;
  line-height: 1.2;
  white-space: nowrap;
  color: var(--kw-brown-deep);
  text-decoration: none;
  background: var(--kw-white);
  border: var(--about-hairline);
  transition: background-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.page-about .about-rail__node {
  display: inline-flex;
  align-items: center;
  color: var(--kw-green);
  transition: color 160ms ease;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  background: var(--kw-green-soft);
  transform: translateY(-2px);
}

.page-about .about-rail__link:hover .about-rail__node,
.page-about .about-rail__link:focus-visible .about-rail__node {
  color: var(--kw-amber);
}

/* ---------- 章节 ---------- */
.page-about .about-chapter {
  padding-block: clamp(34px, 6vw, 78px);
  border-top: var(--about-hairline);
}

.page-about .about-chapter:first-child {
  border-top: 0;
  padding-top: clamp(20px, 3vw, 36px);
}

.page-about .about-chapter__head {
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-about .about-chapter__no {
  margin: 0 0 10px;
  font-family: var(--kw-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--kw-moss);
}

.page-about .about-chapter__head .kw-h2 {
  margin: 0;
  max-width: 18em;
}

.page-about .about-say {
  font-family: var(--kw-kai);
  font-size: clamp(1.05rem, 1.6vw, 1.22rem);
  line-height: 1.7;
  color: var(--kw-brown);
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  padding-left: 16px;
  border-left: 3px solid var(--kw-amber);
}

.page-about .about-chapter__text .kw-text + .kw-text {
  margin-top: 14px;
}

.page-about .about-chapter__text .kw-text,
.page-about .about-slab .kw-text,
.page-about .about-stage .kw-text {
  max-width: 40em;
}

.page-about .about-chapter__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
}

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

/* ---------- 图片 ---------- */
.page-about .kw-media {
  margin: 0;
  border: var(--about-hairline);
  background: var(--kw-warm);
  overflow: hidden;
}

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

.page-about .kw-media__cap {
  padding: 10px 14px;
  border-top: var(--about-hairline);
  background: var(--kw-white);
  font-size: 13px;
  line-height: 1.6;
  color: var(--kw-brown);
}

.page-about .about-stage-figure {
  margin-top: clamp(24px, 4vw, 40px);
}

/* ---------- 阶段列表 ---------- */
.page-about .about-stages {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px 20px;
  padding: clamp(16px, 2.4vw, 24px) 0;
  border-top: var(--about-hairline);
}

.page-about .about-stage:last-child {
  border-bottom: var(--about-hairline);
}

.page-about .about-stage__no {
  font-family: var(--kw-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--kw-amber);
}

.page-about .about-stage .kw-h3 {
  margin: 0;
  color: var(--kw-brown-deep);
}

.page-about .about-stage .kw-text {
  margin: 0;
}

/* ---------- 三条业务线 ---------- */
.page-about .about-slabs {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--kw-line);
  border: var(--about-hairline);
}

.page-about .about-slab {
  padding: clamp(18px, 2.6vw, 26px);
}

.page-about .about-slab .kw-h3 {
  margin: 0 0 10px;
  color: var(--kw-brown-deep);
}

.page-about .about-slab .kw-text {
  margin: 0;
}

.page-about .about-tie {
  margin-top: clamp(16px, 2.4vw, 24px);
}

/* ---------- 折叠面板 ---------- */
.page-about .about-fold {
  margin-top: clamp(18px, 2.6vw, 26px);
  border: var(--about-hairline);
  background: var(--kw-cyan);
}

.page-about .about-fold > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  font-weight: 600;
  color: var(--kw-brown-deep);
  list-style: none;
}

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

.page-about .about-fold > summary::after {
  content: "＋";
  font-family: var(--kw-mono);
  color: var(--kw-moss);
  flex: none;
}

.page-about .about-fold[open] > summary::after {
  content: "－";
}

.page-about .about-fold__body {
  padding: 0 18px 18px;
  background: var(--kw-white);
  border-top: var(--about-hairline);
}

.page-about .about-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-list li {
  position: relative;
  padding: 14px 0 14px 20px;
  border-bottom: var(--about-hairline);
  font-size: 16px;
  line-height: 1.75;
  color: var(--kw-seed);
}

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

.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 9px;
  height: 5px;
  border-radius: 50%;
  transform: rotate(-28deg);
  background: var(--kw-green);
}

/* ---------- 团队 ---------- */
.page-about .about-team-media {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-team {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--kw-line);
  border: var(--about-hairline);
}

.page-about .about-team__row {
  background: var(--kw-white);
  padding: clamp(16px, 2.4vw, 22px);
}

.page-about .about-team__row dt {
  font-family: var(--kw-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--kw-brown-deep);
}

.page-about .about-team__row dd {
  margin: 8px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--kw-seed);
}

/* ---------- 数字条 ---------- */
.page-about .about-metrics {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--kw-line);
  border: var(--about-hairline);
}

.page-about .about-metrics li {
  background: var(--kw-warm);
  padding: clamp(14px, 2vw, 20px);
}

.page-about .about-metrics__num {
  display: block;
  font-family: var(--kw-mono);
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 600;
  color: var(--kw-brown-deep);
  line-height: 1.1;
}

.page-about .about-metrics__key {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  color: var(--kw-moss);
}

/* ---------- 收束 ---------- */
.page-about .about-closing {
  background: var(--kw-brown);
  color: var(--kw-white);
  padding: clamp(44px, 7vw, 96px) 0 clamp(60px, 10vw, 148px);
}

.page-about .about-closing__kicker {
  color: var(--kw-green-soft);
}

.page-about .about-closing .kw-h2 {
  color: var(--kw-white);
  margin: 10px 0 0;
  max-width: 20em;
}

.page-about .about-closing__lede {
  margin-top: clamp(16px, 2.4vw, 24px);
  max-width: 40em;
  color: rgba(253, 253, 247, 0.88);
}

.page-about .about-closing .kw-link {
  color: var(--kw-green-soft);
}

.page-about .about-closing .kw-cta-row {
  margin-top: clamp(22px, 3vw, 34px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-closing .kw-btn--ghost {
  color: var(--kw-white);
  border-color: rgba(253, 253, 247, 0.55);
}

.page-about .about-closing .kw-btn--ghost:hover,
.page-about .about-closing .kw-btn--ghost:focus-visible {
  border-color: var(--kw-white);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-about .about-chapter__split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .about-chapter__media {
    order: 0;
  }

  .page-about .about-stage {
    grid-template-columns: 84px minmax(0, 1fr);
    align-items: baseline;
  }

  .page-about .about-stage__no {
    grid-row: span 2;
    padding-top: 4px;
  }

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

  .page-about .about-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 980px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
    gap: clamp(36px, 4vw, 64px);
  }

  .page-about .about-body {
    grid-template-columns: minmax(0, 1fr) var(--about-rail-width);
    align-items: start;
    gap: clamp(36px, 4vw, 64px);
  }

  .page-about .about-body__rail {
    order: 0;
  }

  .page-about .about-body__main {
    grid-column: 1;
  }

  .page-about .about-body__rail {
    grid-column: 2;
  }

  .page-about .about-rail {
    position: sticky;
    top: 112px;
  }

  .page-about .about-rail__list {
    display: grid;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    position: relative;
  }

  .page-about .about-rail__list::before {
    content: "";
    position: absolute;
    left: 9px;
    top: 12px;
    bottom: 12px;
    width: 1px;
    background: var(--kw-line);
  }

  .page-about .about-rail__item {
    position: relative;
  }

  .page-about .about-rail__link {
    border: 0;
    background: transparent;
    padding: 11px 0 11px 30px;
    position: relative;
    white-space: normal;
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    transform: translateY(-2px);
    color: var(--kw-moss);
  }

  .page-about .about-rail__node {
    position: absolute;
    left: 0;
    top: 50%;
    margin-top: -6px;
  }

  .page-about .about-rail__link:hover .about-rail__node,
  .page-about .about-rail__link:focus-visible .about-rail__node {
    color: var(--kw-amber);
  }
}
</style>
<<<END>>>
</main>