.page-about {
  --about-ink-soft: rgba(22, 33, 43, .76);
  --about-paper-soft: rgba(244, 241, 234, .78);
  --about-line: rgba(201, 211, 220, .9);
  --about-line-dark: rgba(244, 241, 234, .24);
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--navy);
  color: var(--paper);
  padding: 40px 0 56px;
}

.page-about .about-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(116deg,
      transparent 0%,
      transparent 46%,
      rgba(240, 169, 59, .13) 46%,
      rgba(240, 169, 59, .13) 64%,
      rgba(23, 96, 79, .42) 64%,
      rgba(23, 96, 79, .42) 100%);
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: 28px;
}

.page-about .about-hero .eyebrow {
  color: var(--amber);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(31px, 5.6vw, 62px);
  line-height: 1.08;
  letter-spacing: .005em;
  margin: 12px 0 20px;
  color: var(--paper);
}

.page-about .about-hero .lead {
  max-width: 58ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-paper-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__rail {
  padding-top: 4px;
}

.page-about .about-stat {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-about .about-stat > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding: 11px 0;
  margin: 0;
  border-bottom: 1px dashed var(--about-line-dark);
}

.page-about .about-stat > div:first-child {
  border-top: 1px dashed var(--about-line-dark);
}

.page-about .about-stat__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(244, 241, 234, .6);
}

.page-about .about-stat__num {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--amber);
  white-space: nowrap;
}

/* ---------- 通用章节 ---------- */
.page-about .about-sec {
  padding: 52px 0;
}

.page-about .about-sec--green {
  background: var(--green);
  color: var(--paper);
}

.page-about .about-sec--navy {
  background: var(--navy);
  color: var(--paper);
}

.page-about .about-sec__grid,
.page-about .about-sec__head {
  display: grid;
  gap: 16px;
  align-items: start;
}

.page-about .about-sec__num {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 34px;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--amber);
}

.page-about .about-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px, 3.2vw, 31px);
  line-height: 1.3;
  margin: 8px 0 16px;
  max-width: 26ch;
  color: inherit;
}

.page-about .about-subtitle {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.4;
  margin: 30px 0 12px;
  letter-spacing: .01em;
}

.page-about .about-sec__body > p {
  max-width: 66ch;
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-ink-soft);
}

.page-about .about-sec--green .about-sec__body > p,
.page-about .about-sec--navy .about-sec__body > p {
  color: var(--about-paper-soft);
}

.page-about .about-sec--green .eyebrow,
.page-about .about-sec--navy .eyebrow {
  color: var(--amber);
}

.page-about .about-sec__body a,
.page-about .about-promise a {
  color: var(--amber);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-sec--close .about-sec__body a,
.page-about .about-sec--close .about-promise a {
  color: var(--navy-panel);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 24px 0;
}

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

.page-about .about-figure .figure__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--about-ink-soft);
}

.page-about .about-sec--green .about-figure .figure__caption,
.page-about .about-sec--navy .about-figure .figure__caption {
  color: rgba(244, 241, 234, .62);
}

/* ---------- 01 日常处境 ---------- */
.page-about .about-issues {
  list-style: none;
  margin: 8px 0 22px;
  padding: 0;
}

.page-about .about-issues li {
  padding: 14px 0;
  border-bottom: 1px dashed var(--about-line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-issues li:first-child {
  border-top: 1px dashed var(--about-line);
}

.page-about .about-issues strong {
  display: inline;
  font-weight: 700;
  color: var(--ink);
  margin-right: 4px;
}

/* ---------- 02 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .about-timeline__item {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  border-top: 1px dashed var(--about-line-dark);
}

.page-about .about-timeline__item:last-child {
  border-bottom: 1px dashed var(--about-line-dark);
}

.page-about .about-timeline__year {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-about .about-timeline__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.4;
  margin: 0 0 6px;
  color: var(--paper);
}

.page-about .about-timeline__text {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-paper-soft);
}

/* ---------- 03 五步路径 ---------- */
.page-about .about-steps {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px dashed var(--about-line);
}

.page-about .about-step {
  padding: 20px 0;
  border-bottom: 1px dashed var(--about-line);
}

.page-about .about-step__num {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--amber);
  background: var(--navy);
  padding: 3px 8px;
  margin-bottom: 10px;
}

.page-about .about-step__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.4;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-about .about-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--about-ink-soft);
}

/* ---------- 04 内容分类 ---------- */
.page-about .about-cats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
}

.page-about .about-cat {
  padding: 15px 0;
  border-top: 1px dashed var(--about-line);
}

.page-about .about-cat__name {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.4;
  margin-bottom: 5px;
  color: var(--ink);
}

.page-about .about-cat__desc {
  display: block;
  font-size: 13px;
  line-height: 1.75;
  color: var(--about-ink-soft);
}

/* ---------- 05 服务时效 ---------- */
.page-about .about-sla {
  list-style: none;
  margin: 22px 0;
  padding: 0;
}

.page-about .about-sla li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--about-line-dark);
  font-size: 14px;
}

.page-about .about-sla li:first-child {
  border-top: 1px dashed var(--about-line-dark);
}

.page-about .about-sla strong {
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-sla span {
  font-family: var(--font-body);
  color: var(--amber);
  white-space: nowrap;
}

/* ---------- 06 资质与合作 ---------- */
.page-about .about-credits {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-credit {
  padding: 18px 0;
  border-top: 1px dashed var(--about-line-dark);
}

.page-about .about-credit:last-child {
  border-bottom: 1px dashed var(--about-line-dark);
}

.page-about .about-credit__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.45;
  margin: 0 0 7px;
  color: var(--amber-soft);
}

.page-about .about-credit__text {
  margin: 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-paper-soft);
}

/* ---------- 07 长期坚持 ---------- */
.page-about .about-sec--close {
  background: var(--paper);
  border-top: 1px dashed var(--about-line);
}

.page-about .about-promises {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-promise {
  padding: 20px 0;
  border-top: 1px dashed var(--about-line);
}

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

.page-about .about-promise__num {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--navy);
  background: var(--amber-soft);
  padding: 3px 8px;
  margin-bottom: 10px;
}

.page-about .about-promise__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.4;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-about .about-promise p {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-cta {
  margin-top: 34px;
  padding: 24px 20px;
  background: var(--navy);
  color: var(--paper);
  border-left: 4px solid var(--amber);
}

.page-about .about-cta__line {
  margin: 0 0 16px;
  max-width: 44ch;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.5;
  color: var(--paper);
}

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

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-about .about-timeline__item {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

  .page-about .about-timeline__year {
    padding-top: 4px;
  }

  .page-about .about-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 34px;
  }
}

@media (min-width: 780px) {
  .page-about .about-steps {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 22px;
    border-top: 0;
  }

  .page-about .about-step {
    border-bottom: 0;
    border-top: 1px dashed var(--about-line);
    padding: 18px 0 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-sec {
    padding: 68px 0;
  }

  .page-about .about-sec__grid,
  .page-about .about-sec__head {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 52px;
  }

  .page-about .about-sec__num {
    font-size: 50px;
    position: sticky;
    top: 96px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 32px;
  }

  .page-about .about-promises {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 36px;
  }

  .page-about .about-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    padding: 28px 30px;
  }

  .page-about .about-cta__line {
    margin: 0;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 56px 0 76px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(240px, .8fr);
    gap: 68px;
    align-items: start;
  }

  .page-about .about-hero__rail {
    border-left: 1px dashed var(--about-line-dark);
    padding: 8px 0 8px 28px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-cats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}
<<<END>>>