.page-contact {
  --contact-rule: var(--border-thin) solid var(--color-line);
  --contact-rule-contrast: var(--border-thin) solid var(--color-contrast-line);
}

/* ---------- 首屏框景 ---------- */
.page-contact .contact-hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  min-height: calc(var(--space-8) * 5);
  background-color: var(--color-contrast-surface);
}

.page-contact .contact-hero__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center 40%;
}

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

.page-contact .contact-hero__body {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-top: calc(var(--space-8) * 2);
  padding-bottom: var(--space-6);
  color: var(--color-contrast-ink);
}

.page-contact .contact-hero .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0 0 var(--space-6);
  padding: 0;
  list-style: none;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-contrast-ink);
}

.page-contact .contact-hero .breadcrumb-list a {
  color: var(--color-contrast-ink);
  text-decoration-color: var(--color-contrast-line);
}

.page-contact .contact-hero .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: var(--space-2);
  color: var(--color-contrast-line);
}

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

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

.page-contact .contact-hero .kicker {
  color: var(--color-contrast-accent);
}

/* ---------- 通用文字微调 ---------- */
.page-contact .section-head h2 {
  margin: var(--space-2) 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-contact .lede {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-contact a {
  color: var(--color-primary);
  text-decoration-thickness: var(--border-thin);
  text-underline-offset: 3px;
}

.page-contact a:hover {
  color: var(--color-focus);
  text-decoration-thickness: var(--border-thick);
}

/* ---------- 渠道纵列 ---------- */
.page-contact .channel-list {
  margin: var(--space-8) 0 0;
  padding: 0;
  list-style: none;
  border-bottom: var(--contact-rule);
}

.page-contact .channel {
  border-top: var(--contact-rule);
}

.page-contact .channel__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-rows: auto auto;
  column-gap: var(--space-3);
  row-gap: var(--space-1);
  align-items: baseline;
  padding-block: var(--space-3);
  list-style: none;
  cursor: pointer;
  transition: color 160ms ease;
}

.page-contact .channel__summary::-webkit-details-marker {
  display: none;
}

.page-contact .channel__summary:hover .channel__name {
  color: var(--color-primary);
}

.page-contact .channel__summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
}

.page-contact .channel__no {
  grid-column: 1;
  grid-row: 1 / span 2;
  min-width: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--color-primary);
}

.page-contact .channel__name {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  transition: color 160ms ease;
}

.page-contact .channel__scope {
  grid-column: 2;
  grid-row: 2;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
  word-break: break-word;
}

.page-contact .channel__mark {
  grid-column: 3;
  grid-row: 1 / span 2;
  position: relative;
  align-self: center;
  width: var(--space-2);
  height: var(--space-2);
}

.page-contact .channel__mark::before,
.page-contact .channel__mark::after {
  content: "";
  position: absolute;
  background-color: var(--color-ink-muted);
}

.page-contact .channel__mark::before {
  left: 0;
  right: 0;
  top: calc(50% - (var(--border-thin) / 2));
  height: var(--border-thin);
}

.page-contact .channel__mark::after {
  top: 0;
  bottom: 0;
  left: calc(50% - (var(--border-thin) / 2));
  width: var(--border-thin);
  transition: opacity 160ms ease;
}

.page-contact .channel__detail[open] .channel__mark::after {
  opacity: 0;
}

.page-contact .channel__body {
  padding-bottom: var(--space-4);
}

.page-contact .channel__facts {
  margin: 0;
  display: grid;
  gap: var(--space-3);
}

.page-contact .channel__fact {
  display: grid;
  gap: var(--space-1);
}

.page-contact .channel__fact dt {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

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

.page-contact .channel__template {
  margin: 0;
  padding: var(--space-3);
  background-color: var(--color-surface-alt);
  border-left: var(--border-thick) solid var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
  white-space: pre-wrap;
  word-break: break-word;
}

.page-contact .channel__note {
  margin: var(--space-3) 0 0;
  padding-left: var(--space-3);
  max-width: var(--measure);
  border-left: var(--contact-rule);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 响应节奏（深色区） ---------- */
.page-contact .rhythm-block {
  position: relative;
  overflow: hidden;
  padding-block: var(--space-8);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-contact .rhythm-block__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  opacity: 0.7;
}

.page-contact .rhythm-block__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-contact .rhythm-block__inner {
  position: relative;
  z-index: 1;
}

.page-contact .kicker--contrast {
  color: var(--color-contrast-accent);
}

.page-contact .rhythm-block__head h2 {
  margin: var(--space-2) 0 var(--space-3);
  max-width: var(--measure);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-contact .rhythm-block__head .lede {
  max-width: var(--measure);
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent);
}

.page-contact .rhythm-steps {
  margin: var(--space-8) 0 0;
  display: grid;
  gap: var(--space-4);
}

.page-contact .rhythm-step {
  padding-top: var(--space-3);
  border-top: var(--contact-rule-contrast);
}

.page-contact .rhythm-step dt {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--color-contrast-accent);
}

.page-contact .rhythm-step dd {
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

.page-contact .rhythm-timeline {
  margin-top: var(--space-8);
}

.page-contact .rhythm-timeline__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-contact .rhythm-timeline__axis,
.page-contact .rhythm-timeline__tick {
  stroke: var(--color-contrast-line);
  stroke-width: var(--border-thin);
}

.page-contact .rhythm-timeline__dot {
  fill: var(--color-contrast-accent);
}

.page-contact .rhythm-timeline__labels {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
  text-align: center;
}

.page-contact .rhythm-timeline__labels li {
  display: grid;
  gap: var(--space-1);
}

.page-contact .rhythm-timeline__h {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  color: var(--color-contrast-accent);
}

.page-contact .rhythm-timeline__d {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent);
}

/* ---------- 不予受理 ---------- */
.page-contact .decline__grid {
  display: grid;
  gap: var(--space-6);
}

.page-contact .decline__intro h2 {
  margin: var(--space-2) 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-contact .decline__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-bottom: var(--contact-rule);
}

.page-contact .decline__item {
  padding-block: var(--space-3);
  border-top: var(--contact-rule);
}

.page-contact .decline__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

.page-contact .decline__item p + p {
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

/* ---------- 站点信息 ---------- */
.page-contact .record__panel {
  padding: var(--space-4) var(--space-3);
  background-color: var(--color-surface-alt);
}

.page-contact .record__panel h2 {
  margin: var(--space-2) 0 var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-contact .record__facts {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-contact .record__fact {
  display: grid;
  gap: var(--space-1);
  padding-block: var(--space-3);
  border-top: var(--contact-rule);
}

.page-contact .record__fact dt {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.page-contact .record__fact dd {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  font-variant-numeric: tabular-nums;
  word-break: break-word;
}

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

/* ---------- 断点：≥720px ---------- */
@media (min-width: 720px) {
  .page-contact .contact-hero__title {
    font-size: var(--text-4xl);
  }

  .page-contact .channel__no {
    min-width: var(--space-6);
  }

  .page-contact .channel__body {
    padding-left: var(--space-6);
  }

  .page-contact .channel__fact {
    grid-template-columns: minmax(8ch, 10ch) minmax(0, 1fr);
    gap: var(--space-3);
  }

  .page-contact .channel__fact dt {
    padding-top: 0.35em;
  }

  .page-contact .record__fact {
    grid-template-columns: minmax(8ch, 12ch) minmax(0, 1fr);
    gap: var(--space-3);
    align-items: baseline;
  }

  .page-contact .record__panel {
    padding: var(--space-6) var(--space-4);
  }
}

/* ---------- 断点：≥880px ---------- */
@media (min-width: 880px) {
  .page-contact .rhythm-timeline__labels {
    text-align: left;
  }

  .page-contact .rhythm-timeline__labels li:first-child {
    text-align: left;
  }

  .page-contact .rhythm-timeline__labels li:last-child {
    text-align: right;
  }

  .page-contact .rhythm-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
    align-items: start;
  }

  .page-contact .rhythm-step:nth-child(2) {
    margin-top: var(--space-4);
  }

  .page-contact .rhythm-step:nth-child(3) {
    margin-top: var(--space-8);
  }

  .page-contact .decline__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: var(--space-8);
  }

  .page-contact .decline__intro {
    padding-left: var(--space-4);
  }
}

/* ---------- 断点：≥1040px 错位边界 ---------- */
@media (min-width: 1040px) {
  .page-contact .record__panel {
    margin-left: calc(var(--space-6) * -1);
    padding: var(--space-6) var(--space-8);
  }
}