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

/* ---------- 首屏 ---------- */
.page-contact .contact-crumb {
  margin-bottom: var(--space-6);
}

.page-contact .contact-intro__grid {
  display: grid;
  gap: var(--space-6);
}

.page-contact .contact-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-ink);
  margin: var(--space-3) 0 var(--space-3);
  max-width: 20ch;
}

.page-contact .contact-lede {
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-contact .contact-intro__hint {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

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

.page-contact .contact-intro__figure {
  background: var(--color-accent);
  color: var(--color-accent-ink);
  padding: var(--space-6);
  border-radius: var(--radius-sm);
  border-top: var(--space-1) solid var(--color-highlight);
}

.page-contact .contact-intro__figure-value {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.page-contact .contact-intro__figure-label {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: color-mix(in srgb, currentColor 72%, transparent);
}

.page-contact .contact-intro__figure-note {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: color-mix(in srgb, currentColor 88%, transparent);
}

/* ---------- 渠道 ---------- */
.page-contact .contact-channels__head {
  margin-bottom: var(--space-6);
}

.page-contact .contact-visual {
  margin: 0 0 var(--space-6);
}

.page-contact .contact-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border-radius: var(--radius-sm);
  filter: brightness(0.84) contrast(1.08);
}

.page-contact .contact-visual .media__caption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-contact .contact-cards {
  display: grid;
  gap: var(--contact-gap);
}

.page-contact .channel {
  padding: var(--space-6);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: background-color 150ms linear, color 150ms linear;
  outline-offset: 3px;
}

.page-contact .channel--mail {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  border: var(--border-thin) solid var(--color-primary);
}

.page-contact .channel--phone {
  background: var(--color-surface);
  color: var(--color-ink);
  border: var(--border-thin) solid var(--color-line);
}

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

.page-contact .channel__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: color-mix(in srgb, currentColor 70%, transparent);
}

.page-contact .channel__value {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1.25;
  overflow-wrap: anywhere;
  padding: var(--space-3) 0;
  border-top: var(--border-thin) solid color-mix(in srgb, currentColor 34%, transparent);
  border-bottom: var(--border-thin) solid color-mix(in srgb, currentColor 34%, transparent);
}

.page-contact .channel__fit {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, currentColor 90%, transparent);
}

.page-contact .channel__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-contact .channel__list li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: color-mix(in srgb, currentColor 78%, transparent);
}

.page-contact .channel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: var(--space-2);
  height: var(--border-thin);
  background: currentColor;
  opacity: 0.55;
}

.page-contact .channel__meta {
  margin-top: auto;
  font-size: var(--text-sm);
  color: color-mix(in srgb, currentColor 66%, transparent);
}

/* ---------- 对照选择 ---------- */
.page-contact .route-list {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-contact .route-item {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-contact .route-item__case {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  line-height: 1.35;
  color: var(--color-ink);
}

.page-contact .route-item__pick {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.page-contact .route-item__pick--mail {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-contact .route-item__pick--phone {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-contact .route-item__pick--both {
  background: var(--color-surface-alt);
  color: var(--color-ink);
  border: var(--border-thin) solid var(--color-ink-muted);
}

.page-contact .route-item__bring {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink-soft);
}

/* ---------- 回应节奏 ---------- */
.page-contact .contact-reply__grid {
  display: grid;
  gap: var(--space-6);
}

.page-contact .contact-reply__lead p {
  max-width: var(--measure);
  color: color-mix(in srgb, currentColor 88%, transparent);
}

.page-contact .contact-reply .section-title {
  color: inherit;
  margin: var(--space-3) 0 var(--space-3);
  max-width: 18ch;
}

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

.page-contact .reply-fact {
  border-top: var(--border-thin) solid color-mix(in srgb, currentColor 40%, transparent);
  padding-top: var(--space-2);
}

.page-contact .reply-fact dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: color-mix(in srgb, currentColor 70%, transparent);
}

.page-contact .reply-fact dd {
  margin: var(--space-1) 0 0;
  font-size: var(--text-base);
  line-height: 1.45;
}

/* ---------- 准备事项 ---------- */
.page-contact .contact-prep__grid {
  display: grid;
  gap: var(--space-6);
}

.page-contact .prep-list {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  padding: var(--space-4) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-contact .prep-item__num {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--color-primary);
}

.page-contact .prep-item__body h3 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.2;
  margin: 0 0 var(--space-2);
  color: var(--color-ink);
}

.page-contact .prep-item__body p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: 46ch;
}

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

.page-contact .contact-prep__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-sm);
  filter: brightness(0.86) contrast(1.06);
}

.page-contact .contact-prep__media .media__caption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

/* ---------- 备案与地址 ---------- */
.page-contact .contact-legal__grid {
  display: grid;
  gap: var(--space-6);
}

.page-contact .contact-legal__text p {
  max-width: var(--measure);
  color: color-mix(in srgb, currentColor 86%, transparent);
}

.page-contact .contact-legal .section-title {
  color: inherit;
  margin: var(--space-3) 0 var(--space-3);
  max-width: 16ch;
}

.page-contact .contact-legal__frame {
  background: color-mix(in srgb, var(--color-contrast-ink) 7%, var(--color-contrast-surface));
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  padding: var(--space-6);
  transition: background-color 150ms linear, color 150ms linear;
}

.page-contact .contact-legal__frame:focus-visible {
  outline: 2px solid var(--color-contrast-accent);
  outline-offset: 3px;
}

.page-contact .legal-list {
  margin: 0;
  display: grid;
  gap: var(--space-1);
}

.page-contact .legal-list dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: color-mix(in srgb, currentColor 62%, transparent);
}

.page-contact .legal-list dd {
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.page-contact .legal-list dd:last-child {
  margin-bottom: 0;
}

/* ---------- 收尾出口 ---------- */
.page-contact .contact-next__inner {
  display: grid;
  gap: var(--space-4);
}

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

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

.page-contact .contact-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ---------- 悬停反转 ---------- */
@media (hover: hover) {
  .page-contact .channel--mail:hover {
    background: var(--color-surface);
    color: var(--color-ink);
    border-color: var(--color-line);
  }

  .page-contact .channel--phone:hover {
    background: var(--color-accent);
    color: var(--color-accent-ink);
    border-color: var(--color-accent);
  }

  .page-contact .contact-legal__frame:hover {
    background: var(--color-contrast-ink);
    color: var(--color-contrast-surface);
  }

  .page-contact .route-item:hover .route-item__case {
    color: var(--color-primary);
  }
}

/* ---------- 窄屏到宽屏 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .route-item {
    grid-template-columns: minmax(0, 4.5fr) minmax(0, 2fr) minmax(0, 3.5fr);
    align-items: baseline;
    gap: var(--space-4);
  }

  .page-contact .reply-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-contact .contact-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-intro__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 3fr);
    align-items: end;
    gap: var(--space-8);
  }

  .page-contact .contact-intro__figure {
    padding: var(--space-8) var(--space-6);
  }

  .page-contact .contact-reply__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-contact .contact-prep__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-contact .contact-prep__media {
    position: sticky;
    top: var(--space-8);
  }

  .page-contact .contact-legal__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: var(--space-8);
    align-items: start;
  }
}