/* ========== 联系我们｜page-contact ========== */

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

.page-contact img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* --- 面包屑外壳 --- */
.page-contact .breadcrumb-wrap {
  border-bottom: var(--contact-rule);
}

/* --- 顶部导语 --- */
.page-contact .contact-hero {
  padding-block: var(--space-6) var(--space-6);
}

.page-contact .contact-hero h1 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: clamp(var(--text-xl), 6.6vw, var(--text-2xl));
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: var(--space-3) 0 var(--space-3);
  max-width: 20ch;
  text-wrap: balance;
}

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

/* --- 章节底座 --- */
.page-contact .section {
  padding-block: var(--space-8);
}

.page-contact .section h2 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: clamp(var(--text-lg), 4.2vw, var(--text-xl));
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: var(--space-2) 0 var(--space-3);
  max-width: 22ch;
  text-wrap: balance;
}

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

/* --- 图片与展签 --- */
.page-contact .contact-plate {
  margin: 0 0 var(--space-6);
}

.page-contact .contact-plate .media-frame,
.page-contact .channel-figure .media-frame {
  width: 100%;
}

.page-contact .plate-caption {
  margin-top: var(--space-2);
  max-width: var(--measure);
}

/* --- 三条渠道 --- */
.page-contact .channels {
  border-top: var(--contact-rule);
}

.page-contact .channel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  padding: var(--space-6) 0 var(--space-6) var(--space-4);
  border-bottom: var(--contact-rule);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  inset-block: var(--space-6);
  width: 0.25em;
  background-color: var(--color-primary);
}

.page-contact .channel--address::before {
  background-color: var(--color-accent);
}

.page-contact .channel-label {
  margin: 0;
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-soft);
}

.page-contact .channel-main {
  display: block;
  min-width: 0;
}

.page-contact .channel-value {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-base);
  line-height: 1.4;
  color: var(--color-ink);
  overflow-wrap: anywhere;
  letter-spacing: 0.01em;
}

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

.page-contact .channel-window {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-contact .channel-window::before {
  content: "";
  flex: none;
  width: 0.45em;
  height: 0.45em;
  background-color: var(--color-accent);
}

.page-contact .channel-figure {
  margin: var(--space-4) 0 0;
}

/* --- 可展开组 --- */
.page-contact .expander-group {
  border-top: var(--contact-rule);
}

.page-contact .expander {
  border-bottom: var(--contact-rule);
}

.page-contact .expander-trigger {
  width: 100%;
  text-align: start;
}

.page-contact .expander-panel .expander-body {
  max-width: var(--measure);
}

.page-contact .expander-panel .expander-body p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* --- 常见去向 --- */
.page-contact .route-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--contact-rule);
}

.page-contact .route-list > li {
  border-bottom: var(--contact-rule);
}

.page-contact .route-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: var(--space-3);
  padding-block: var(--space-4);
  text-decoration: none;
  color: inherit;
  transition: background-color 180ms linear, color 180ms linear;
}

.page-contact .route-index {
  font-size: var(--text-sm);
  color: var(--color-primary);
  line-height: var(--leading-body);
}

.page-contact .route-body {
  display: block;
  min-width: 0;
}

.page-contact .route-title {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-contact .route-desc {
  display: block;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-contact .route-arrow {
  display: none;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--color-ink-muted);
  line-height: var(--leading-heading);
  transition: transform 180ms ease, color 180ms linear;
}

.page-contact .route-row:hover,
.page-contact .route-row:focus-visible {
  background-color: var(--color-highlight);
}

.page-contact .route-row:hover .route-arrow,
.page-contact .route-row:focus-visible .route-arrow {
  color: var(--color-accent);
  transform: translateX(6px);
}

.page-contact .route-row:hover .route-index,
.page-contact .route-row:focus-visible .route-index {
  color: var(--color-accent);
}

/* --- 结尾出口 --- */
.page-contact .contact-exit {
  padding-block: var(--space-8);
  border-top: var(--contact-rule);
}

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

.page-contact .exit-key {
  font-family: var(--font-mono);
  color: var(--color-ink);
  overflow-wrap: anywhere;
}

.page-contact .exit-line a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

.page-contact .exit-line a:hover,
.page-contact .exit-line a:focus-visible {
  color: var(--color-focus);
}

/* --- 平板及以上 --- */
@media (min-width: 768px) {
  .page-contact .contact-hero {
    padding-block: var(--space-8) var(--space-8);
  }

  .page-contact .section {
    padding-block: var(--section-y);
  }

  .page-contact .section-lead {
    margin-bottom: var(--space-8);
  }

  .page-contact .channel {
    grid-template-columns: minmax(120px, 168px) minmax(0, 1fr);
    gap: var(--space-6);
    padding-inline-start: var(--space-6);
  }

  .page-contact .channel-value {
    font-size: var(--text-lg);
  }

  .page-contact .channel-figure {
    margin-top: var(--space-6);
  }

  .page-contact .route-row {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: var(--space-4);
    padding-inline: var(--space-3);
    margin-inline: calc(var(--space-3) * -1);
  }

  .page-contact .route-arrow {
    display: block;
  }
}

/* --- 宽屏 --- */
@media (min-width: 1100px) {
  .page-contact .channel-figure {
    max-width: 720px;
  }

  .page-contact .route-desc {
    max-width: 58ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .route-row,
  .page-contact .route-arrow {
    transition: none;
  }

  .page-contact .route-row:hover .route-arrow,
  .page-contact .route-row:focus-visible .route-arrow {
    transform: none;
  }
}