.page-contact {
  --contact-card-pad: var(--space-3);
}

.page-contact .contact-hero {
  padding-top: calc(var(--section-y) * 0.5);
  padding-bottom: calc(var(--section-y) * 0.65);
}

.page-contact .breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 var(--space-3);
  padding: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-contact .breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.page-contact .breadcrumb li + li::before {
  content: "›";
  color: var(--color-line);
}

.page-contact .breadcrumb a {
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: color 200ms ease-out, border-color 200ms ease-out;
}

.page-contact .breadcrumb a:hover {
  color: var(--color-focus);
  border-bottom-color: var(--color-focus);
}

.page-contact .contact-title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: var(--space-2) 0 var(--space-3);
  max-width: 16ch;
}

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

/* ---------- 渠道总览 ---------- */

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.page-contact .channel-card {
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--contact-card-pad);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-contact .channel-card:nth-child(2) {
  background: var(--color-surface-deep);
}

.page-contact .channel-badge {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.page-contact .channel-index {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
}

.page-contact .channel-type {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  background: var(--color-primary-soft);
  color: var(--color-ink);
}

.page-contact .channel-name {
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0;
}

.page-contact .channel-address {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  margin: 0;
  word-break: break-all;
}

.page-contact .channel-line {
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-soft);
  margin: 0;
}

.page-contact .channel-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  margin-top: auto;
}

.page-contact .channel-sublabel {
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-1);
}

.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-contact .channel-list li {
  position: relative;
  padding-left: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-ink-soft);
}

.page-contact .channel-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 1px;
  background: var(--color-accent);
}

.page-contact .channel-list--no li::before {
  background: var(--color-ink-muted);
}

.page-contact .contact-figure {
  margin: var(--space-6) 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  background: var(--color-surface-deep);
}

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

.page-contact .contact-figure--wide img {
  aspect-ratio: 3 / 2;
}

.page-contact .contact-figure--tall img {
  aspect-ratio: 4 / 3;
}

/* ---------- 响应节奏 ---------- */

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

.page-contact .rhythm-copy .section-title {
  margin-bottom: var(--space-2);
}

.page-contact .rhythm-track {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-contact .rhythm-track::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: var(--border-thin);
  background: var(--color-line);
}

.page-contact .rhythm-node {
  position: relative;
  padding-left: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-contact .rhythm-dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--color-accent);
}

.page-contact .rhythm-time {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  letter-spacing: 0.01em;
}

.page-contact .rhythm-text {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-ink-soft);
  max-width: 42ch;
}

.page-contact .rhythm-copy .pull-quote {
  margin: var(--space-6) 0 0;
}

.page-contact .rhythm-layout .contact-figure {
  margin-top: 0;
}

/* ---------- 提报要点 ---------- */

.page-contact .prep-list {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.page-contact .prep-item {
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.page-contact .prep-item label {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  cursor: pointer;
}

.page-contact .prep-item input[type="checkbox"] {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-contact .prep-marker {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border-radius: 6px;
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
  position: relative;
  transition: background-color 200ms ease-out, border-color 200ms ease-out;
}

.page-contact .prep-marker::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 46%;
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--color-accent-ink);
  border-bottom: 2px solid var(--color-accent-ink);
  transform: translate(-50%, -50%) rotate(-45deg);
  opacity: 0;
  transition: opacity 200ms ease-out;
}

.page-contact .prep-item input[type="checkbox"]:checked ~ .prep-marker {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.page-contact .prep-item input[type="checkbox"]:checked ~ .prep-marker::after {
  opacity: 1;
}

.page-contact .prep-item input[type="checkbox"]:focus-visible ~ .prep-marker {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-contact .prep-body {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-contact .prep-title {
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  line-height: 1.4;
}

.page-contact .prep-note {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
  max-width: 48ch;
}

.page-contact .prep-note a {
  color: var(--color-focus);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 备案面板 ---------- */

.page-contact .legal-panel {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-3);
  margin-top: var(--space-6);
}

.page-contact .legal-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-contact .legal-label {
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  color: var(--color-contrast-ink);
  opacity: 0.72;
  margin: 0 0 6px;
}

.page-contact .legal-value {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--color-contrast-accent);
  margin: 0;
  word-break: break-all;
  line-height: 1.5;
}

.page-contact .legal-note {
  margin: var(--space-4) 0 0;
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-contrast-ink);
  max-width: var(--measure);
}

.page-contact .legal-note a {
  color: var(--color-contrast-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-contact {
    --contact-card-pad: var(--space-4);
  }

  .page-contact .contact-title {
    font-size: var(--text-4xl);
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .page-contact .prep-list {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .page-contact .legal-grid {
    grid-template-columns: repeat(2, 1fr);
    row-gap: var(--space-4);
  }

  .page-contact .legal-panel {
    padding: var(--space-6);
  }
}

@media (min-width: 960px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .channel-split {
    grid-template-columns: 1fr;
  }

  .page-contact .rhythm-layout {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: var(--space-8);
  }

  .page-contact .rhythm-track {
    flex-direction: row;
    gap: var(--space-4);
  }

  .page-contact .rhythm-track::before {
    left: 6px;
    right: 6px;
    top: 5px;
    bottom: auto;
    width: auto;
    height: var(--border-thin);
  }

  .page-contact .rhythm-node {
    flex: 1 1 0;
    min-width: 0;
    padding-left: 0;
    padding-top: var(--space-3);
  }

  .page-contact .rhythm-dot {
    left: 0;
    top: 0;
  }

  .page-contact .rhythm-text {
    max-width: none;
  }

  .page-contact .legal-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .prep-marker,
  .page-contact .prep-marker::after,
  .page-contact .breadcrumb a {
    transition: none;
  }
}