.page-about {
  --about-gap-lg: clamp(22px, 4vw, 46px);
  --about-border: 2px solid var(--ez-ink);
  --about-pad: clamp(16px, 3vw, 28px);
  background: var(--ez-paper);
  overflow-x: clip;
}

.page-about [id] {
  scroll-margin-top: 90px;
}

/* ---------- 封面 ---------- */
.page-about .about-hero {
  background: var(--ez-paper);
  border-bottom: var(--about-border);
  padding-block: clamp(28px, 5vw, 64px) clamp(34px, 5vw, 68px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--about-gap-lg);
}

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

.page-about .about-hero__title {
  margin: 12px 0 16px;
  max-width: 14em;
  letter-spacing: -0.02em;
  color: var(--ez-deep);
}

.page-about .about-hero__lede {
  max-width: 36em;
  color: var(--ez-text-body);
}

.page-about .about-hero__aside {
  display: grid;
  gap: var(--ez-gap);
  align-content: start;
  min-width: 0;
}

/* 图片位通用 */
.page-about .ez-figure {
  margin: 0;
  min-width: 0;
}

.page-about .ez-figure__frame {
  position: relative;
  border: var(--about-border);
  box-shadow: var(--ez-shadow-print);
  background: var(--ez-sand);
  overflow: hidden;
  line-height: 0;
}

.page-about .ez-figure__img,
.page-about .ez-figure__frame > img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about .ez-figure__num {
  position: absolute;
  left: 0;
  bottom: 0;
  display: inline-block;
  padding: 4px 10px;
  background: var(--ez-deep);
  color: var(--ez-paper);
  font-size: 12px;
  letter-spacing: 0.12em;
  line-height: 1.6;
}

.page-about .ez-figure__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ez-text-soft);
}

/* 快捷操作带 */
.page-about .about-hero__actions {
  display: grid;
  gap: 2px;
  padding: 6px 18px;
  background: var(--ez-deep);
  border-left: 6px solid var(--ez-amber);
  box-shadow: var(--ez-shadow-print);
}

.page-about .about-hero__action {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 13px 0;
  color: var(--ez-paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(215, 222, 230, 0.26);
  transition: color 0.18s ease;
}

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

.page-about .about-hero__action-num {
  display: inline-block;
  padding: 2px 7px;
  background: rgba(217, 121, 27, 0.18);
  color: var(--ez-amber);
  font-size: 12px;
  letter-spacing: 0.1em;
  transition: background 0.18s ease, color 0.18s ease;
}

.page-about .about-hero__action-text {
  font-size: 14px;
  line-height: 1.6;
}

.page-about .about-hero__action:hover,
.page-about .about-hero__action:focus-visible {
  color: var(--ez-amber);
  outline: none;
}

.page-about .about-hero__action:hover .about-hero__action-num,
.page-about .about-hero__action:focus-visible .about-hero__action-num {
  background: var(--ez-amber);
  color: var(--ez-deep-dark);
}

/* 数字条 */
.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 1px;
  background: var(--ez-line);
}

.page-about .about-hero__stat {
  min-width: 0;
  padding: 12px 14px;
  background: var(--ez-paper);
}

.page-about .about-hero__stat dt,
.page-about .about-hero__stat dd {
  margin: 0;
}

.page-about .about-hero__stat-k {
  font-family: var(--ez-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ez-steel);
}

.page-about .about-hero__stat-v {
  margin-top: 6px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ez-ink);
  overflow-wrap: anywhere;
}

/* 按钮行 */
.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

/* ---------- 品牌主张 ---------- */
.page-about .about-promise {
  background: var(--ez-paper);
}

.page-about .about-promise__grid {
  display: grid;
  gap: var(--about-gap-lg);
}

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

.page-about .about-promise__body .ez-text + .ez-text {
  margin-top: 14px;
}

.page-about .about-promise__list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-promise__item {
  position: relative;
  min-width: 0;
  padding: 16px 18px 16px 46px;
  background: var(--ez-silver-soft);
  border: 1px solid var(--ez-line);
}

.page-about .about-promise__item::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 20px;
  width: 12px;
  height: 12px;
  border: 2px solid var(--ez-amber);
  background: var(--ez-paper);
}

.page-about .about-promise__item-title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ez-deep);
}

.page-about .about-promise__item .ez-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 使用场景 ---------- */
.page-about .about-scenes__grid {
  display: grid;
  gap: var(--about-gap-lg);
}

.page-about .about-scenes__list {
  display: grid;
  gap: var(--ez-gap);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-scene {
  min-width: 0;
  padding: 16px 18px;
  background: var(--ez-paper);
  border: 1px solid var(--ez-line);
  border-left: 3px solid var(--ez-teal);
  box-shadow: var(--ez-shadow-print-sm);
}

.page-about .about-scene__num {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ez-teal);
}

.page-about .about-scene .ez-h3 {
  margin: 0 0 8px;
  color: var(--ez-deep);
}

.page-about .about-scene .ez-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
}

/* ---------- 归档维护 ---------- */
.page-about .about-archive {
  background: var(--ez-paper);
}

.page-about .about-archive__grid {
  display: grid;
  gap: var(--about-gap-lg);
}

.page-about .about-rail {
  min-width: 0;
  padding: 18px 16px;
  background: var(--ez-silver-soft);
  border: 1px solid var(--ez-line);
}

.page-about .about-rail__title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ez-steel);
}

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

.page-about .about-rail__link {
  color: var(--ez-ink);
  font-size: 14px;
  line-height: 1.6;
  text-decoration: none;
  border-bottom: 1px solid var(--ez-line);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--ez-amber-dark);
  border-bottom-color: var(--ez-amber);
  outline: none;
}

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

.page-about .about-archive__block {
  padding: var(--about-pad);
  background: var(--ez-paper);
  border: 1px solid var(--ez-line);
  border-top: 3px solid var(--ez-deep);
}

.page-about .about-archive__block + .about-archive__block {
  margin-top: var(--ez-gap);
}

.page-about .about-archive__kicker {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ez-teal);
}

.page-about .about-archive__block .ez-h3 {
  margin: 0 0 10px;
  color: var(--ez-deep);
}

.page-about .about-archive__block .ez-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-archive__figure {
  margin-top: 18px;
}

/* ---------- 四段原则 ---------- */
.page-about .about-path {
  background: var(--ez-paper);
  border-top: 1px solid var(--ez-line);
}

.page-about .about-path__lede {
  max-width: 40em;
  margin-top: 10px;
  color: var(--ez-text-soft);
}

.page-about .about-principles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ez-gap);
}

.page-about .about-principle {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  padding: var(--about-pad);
  background: var(--ez-paper);
  border: 1px solid var(--ez-line);
  box-shadow: var(--ez-shadow-print-sm);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-about .about-principle:hover {
  border-color: var(--ez-amber);
  box-shadow: 4px 4px 0 rgba(217, 121, 27, 0.28);
}

.page-about .about-principle__num {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ez-line);
  transition: color 0.18s ease;
}

.page-about .about-principle:hover .about-principle__num {
  color: var(--ez-amber);
}

.page-about .about-principle .ez-h3 {
  margin: 0;
  color: var(--ez-deep);
}

.page-about .about-principle .ez-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
}

.page-about .about-principle--deep {
  background: var(--ez-deep);
  border-color: var(--ez-deep-dark);
  color: var(--ez-paper);
}

.page-about .about-principle--deep:hover {
  border-color: var(--ez-amber);
  box-shadow: 4px 4px 0 rgba(217, 121, 27, 0.4);
}

.page-about .about-principle--deep .ez-h3 {
  color: var(--ez-paper);
}

.page-about .about-principle--deep .ez-text {
  color: var(--ez-silver);
}

.page-about .about-principle--deep .about-principle__num {
  color: var(--ez-amber);
}

/* ---------- 服务主体与联系 ---------- */
.page-about .about-service .ez-kicker {
  color: var(--ez-amber);
}

.page-about .about-service .ez-h2 {
  color: var(--ez-paper);
}

.page-about .about-service__lede {
  max-width: 40em;
  margin-top: 12px;
  color: var(--ez-silver);
}

.page-about .about-service__grid {
  display: grid;
  gap: var(--ez-gap);
}

.page-about .about-service__card {
  min-width: 0;
  padding: var(--about-pad);
  background: var(--ez-paper);
  color: var(--ez-ink);
  border: var(--about-border);
  box-shadow: var(--ez-shadow-print);
}

.page-about .about-service__card .ez-h3 {
  margin: 0 0 14px;
  color: var(--ez-deep);
}

.page-about .about-service__list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
}

.page-about .about-service__item {
  display: grid;
  gap: 3px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--ez-line);
}

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

.page-about .about-service__item dt,
.page-about .about-service__item dd {
  margin: 0;
}

.page-about .about-service__k {
  font-family: var(--ez-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ez-steel);
}

.page-about .about-service__v {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ez-ink);
  overflow-wrap: anywhere;
}

.page-about .about-service__note {
  margin: var(--ez-gap) 0 0;
  padding: 14px 16px;
  background: rgba(215, 222, 230, 0.1);
  border-left: 3px solid var(--ez-teal);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ez-silver);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

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

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.84fr);
    align-items: start;
  }

  .page-about .about-promise__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-about .about-scenes__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }

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

@media (min-width: 940px) {
  .page-about .about-archive__grid {
    grid-template-columns: minmax(0, 250px) minmax(0, 1fr);
    gap: clamp(24px, 5vw, 56px);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 24px;
  }
}

@media (min-width: 1040px) {
  .page-about .about-principles {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-principles > .about-principle:nth-child(1) {
    grid-column: span 4;
  }

  .page-about .about-principles > .about-principle:nth-child(2) {
    grid-column: span 2;
  }

  .page-about .about-principles > .about-principle:nth-child(3) {
    grid-column: span 2;
  }

  .page-about .about-principles > .about-principle:nth-child(4) {
    grid-column: span 4;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__action,
  .page-about .about-hero__action-num,
  .page-about .about-principle,
  .page-about .about-principle__num,
  .page-about .about-rail__link {
    transition: none;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .page-about [data-reveal] {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s ease, transform 0.4s ease;
  }

  .page-about [data-reveal][data-reveal-in] {
    opacity: 1;
    transform: none;
  }
}