.page-contact {
  --contact-rule: var(--border-thin) solid var(--color-line);
  --contact-accent-rule: calc(var(--border-thin) * 2) solid var(--color-accent);
  --contact-pad: var(--space-4);
}

@media (min-width: 900px) {
  .page-contact {
    --contact-pad: var(--space-6);
  }
}

/* ============ 面包屑 ============ */
.page-contact .breadcrumb {
  padding-block: var(--space-3);
}

.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-contact .breadcrumb li + li::before {
  content: "/";
  margin: 0 var(--space-2);
  color: var(--color-line);
}

.page-contact .breadcrumb a {
  color: var(--color-ink-soft);
  text-decoration: none;
}

.page-contact .breadcrumb a:hover {
  color: var(--color-accent);
}

/* ============ 首屏 ============ */
.page-contact .contact-masthead {
  padding-bottom: var(--space-6);
}

.page-contact .contact-masthead__frame {
  position: relative;
  aspect-ratio: 4 / 3;
  border: var(--contact-rule);
}

@media (min-width: 720px) {
  .page-contact .contact-masthead__frame {
    aspect-ratio: 10 / 3;
  }
}

.page-contact .contact-masthead__frame .media-frame__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-contact .contact-masthead__frame .media-frame__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-contact .contact-masthead__frame .media-frame__body {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-4);
  color: var(--color-contrast-ink);
}

@media (min-width: 720px) {
  .page-contact .contact-masthead__frame .media-frame__body {
    padding: var(--space-6);
  }
}

@media (min-width: 1080px) {
  .page-contact .contact-masthead__frame .media-frame__body {
    padding: var(--space-8);
  }
}

.page-contact .contact-masthead .eyebrow {
  color: var(--color-contrast-ink);
  margin-bottom: var(--space-2);
}

.page-contact .contact-masthead__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
  margin: 0 0 var(--space-3);
  max-width: 20ch;
}

@media (min-width: 900px) {
  .page-contact .contact-masthead__title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
  }
}

.page-contact .contact-masthead__lead {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  max-width: var(--measure);
  opacity: 0.88;
}

/* ============ 通用区块标题 ============ */
.page-contact .contact-section__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-3);
  max-width: 26ch;
}

@media (min-width: 900px) {
  .page-contact .contact-section__title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-4);
  }
}

.page-contact .contact-section__intro {
  margin: 0 0 var(--space-6);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

/* ============ 通道清单 ============ */
.page-contact .contact-desks {
  padding-block: calc(var(--section-y) / 2);
}

@media (min-width: 900px) {
  .page-contact .contact-desks {
    padding-block: var(--section-y);
  }
}

.page-contact .desk-stack {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: var(--space-6);
  column-gap: var(--space-4);
}

@media (min-width: 960px) {
  .page-contact .desk-stack {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    row-gap: var(--space-8);
    column-gap: var(--space-6);
  }

  .page-contact .desk-stack > .desk:nth-child(1) {
    grid-column: 1 / span 12;
  }

  .page-contact .desk-stack > .desk:nth-child(2) {
    grid-column: 3 / span 10;
  }

  .page-contact .desk-stack > .desk:nth-child(3) {
    grid-column: 1 / span 10;
  }

  .page-contact .desk-stack > .desk:nth-child(4) {
    grid-column: 4 / span 9;
  }
}

.page-contact .desk {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  border: var(--contact-rule);
  padding: var(--contact-pad);
  background: var(--color-surface);
  transition: border-color 120ms ease, background-color 120ms ease;
}

@media (min-width: 960px) {
  .page-contact .desk {
    grid-template-columns: 3.5rem minmax(0, 1.55fr) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }
}

.page-contact .desk:hover,
.page-contact .desk:focus-within {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.page-contact .desk__no {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
  margin: 0;
}

.page-contact .desk:hover .desk__no {
  color: var(--color-accent);
}

.page-contact .desk__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-2);
}

.page-contact .desk--lead .desk__name {
  font-size: var(--text-xl);
}

.page-contact .desk--sub .desk__name {
  font-size: var(--text-base);
}

.page-contact .desk--mail .desk__name {
  display: inline-block;
  padding-bottom: var(--space-1);
  border-bottom: var(--contact-accent-rule);
}

.page-contact .desk__value {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-2);
  overflow-wrap: anywhere;
}

.page-contact .desk__use {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  max-width: var(--measure);
}

.page-contact .desk__spec {
  margin: 0;
  display: grid;
  gap: var(--space-2);
  padding-top: var(--space-3);
  border-top: var(--contact-rule);
}

@media (min-width: 960px) {
  .page-contact .desk__spec {
    border-top: 0;
    border-left: var(--contact-rule);
    padding-top: 0;
    padding-left: var(--space-4);
  }
}

.page-contact .desk__spec-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-muted);
  transition: color 120ms ease;
}

@media (min-width: 960px) {
  .page-contact .desk__spec-row {
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
    gap: 0;
  }
}

.page-contact .desk:hover .desk__spec-row,
.page-contact .desk:focus-within .desk__spec-row {
  color: var(--color-ink);
}

.page-contact .desk__spec-row dt {
  font-weight: var(--weight-body);
}

.page-contact .desk__spec-row dd {
  margin: 0;
  font-family: var(--font-mono);
  color: inherit;
}

/* ============ 详情区块 ============ */
.page-contact .contact-detail {
  padding-block: calc(var(--section-y) / 2);
  border-top: var(--contact-rule);
}

@media (min-width: 900px) {
  .page-contact .contact-detail {
    padding-block: var(--section-y);
  }
}

.page-contact .contact-detail__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 960px) {
  .page-contact .contact-detail__grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-contact .contact-detail__grid--flip {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.7fr);
  }

  .page-contact .contact-detail__grid--flip .contact-detail__text {
    order: 2;
  }

  .page-contact .contact-detail__grid--flip .contact-detail__aside {
    order: 1;
  }
}

.page-contact .contact-detail__text p {
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  max-width: var(--measure);
}

.page-contact .contact-detail__text a,
.page-contact .contact-locus__text a,
.page-contact .contact-scope__tail a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .contact-detail__text a:hover,
.page-contact .contact-locus__text a:hover,
.page-contact .contact-scope__tail a:hover {
  color: var(--color-ink);
}

.page-contact .contact-steps {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--contact-rule);
}

.page-contact .contact-steps li {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
  padding-block: var(--space-3);
  border-bottom: var(--contact-rule);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-contact .contact-steps__no {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
  padding-top: 0.35em;
}

.page-contact .contact-detail__aside {
  border: var(--contact-rule);
  background: var(--color-surface-alt);
}

.page-contact .contact-facts {
  margin: 0;
  padding: 0;
}

.page-contact .contact-facts__row {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3) var(--contact-pad);
  border-bottom: var(--contact-rule);
}

.page-contact .contact-facts__row:last-child {
  border-bottom: 0;
}

.page-contact .contact-facts__row dt {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-contact .contact-facts__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink);
  overflow-wrap: anywhere;
}

/* ============ 登记信息 ============ */
.page-contact .contact-locus {
  padding-block: calc(var(--section-y) / 2);
  border-top: var(--contact-rule);
  background: var(--color-surface-alt);
}

@media (min-width: 900px) {
  .page-contact .contact-locus {
    padding-block: var(--section-y);
  }
}

.page-contact .contact-locus__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 960px) {
  .page-contact .contact-locus__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-8);
    align-items: start;
  }
}

.page-contact .contact-locus__media {
  margin: 0;
}

.page-contact .contact-locus__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 32 / 21;
  object-fit: cover;
  border: var(--contact-rule);
}

.page-contact .contact-locus__media .placard {
  margin-top: var(--space-2);
  color: var(--color-ink-muted);
}

.page-contact .contact-locus__text p {
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  max-width: var(--measure);
}

.page-contact .contact-locus__plate {
  border: var(--contact-rule);
  background: var(--color-surface);
  padding: var(--contact-pad);
  margin: var(--space-4) 0 var(--space-3);
}

.page-contact .contact-locus__plate-key {
  margin: 0 0 var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-contact .contact-locus__plate-val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1.4;
  color: var(--color-ink);
  overflow-wrap: anywhere;
}

.page-contact .contact-locus__plate-note {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-contact .contact-locus__tail {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

/* ============ 受理边界 ============ */
.page-contact .contact-scope {
  padding-block: calc(var(--section-y) / 2);
  border-top: var(--contact-rule);
}

@media (min-width: 900px) {
  .page-contact .contact-scope {
    padding-block: var(--section-y);
  }
}

.page-contact .contact-scope__intro {
  margin: 0 0 var(--space-6);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-contact .contact-scope__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: var(--contact-rule);
}

@media (min-width: 900px) {
  .page-contact .contact-scope__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-8);
  }
}

.page-contact .contact-scope__item {
  padding-block: var(--space-4);
  border-bottom: var(--contact-rule);
}

.page-contact .contact-scope__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-2);
}

.page-contact .contact-scope__note {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-contact .contact-scope__tail {
  margin: var(--space-6) 0 0;
  padding: var(--contact-pad);
  border: var(--contact-rule);
  background: var(--color-surface-alt);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

/* ============ 交互与降级 ============ */
.page-contact a:focus-visible,
.page-contact [tabindex]:focus-visible {
  outline: calc(var(--border-thin) * 2) solid var(--color-focus);
  outline-offset: 2px;
}

.page-contact .btn:focus-visible {
  outline: calc(var(--border-thin) * 2) solid var(--color-focus);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .desk,
  .page-contact .desk__spec-row,
  .page-contact .desk__no {
    transition: none;
  }
}
</main>