.page-contact {
  --contact-hero-min: 420px;
  --contact-card-lift: 6px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-block: var(--space-8) var(--space-8);
}

.page-contact .contact-hero-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.6) contrast(1.05);
  z-index: 0;
}

.page-contact .contact-hero-scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  z-index: 1;
}

.page-contact .contact-hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: var(--space-3);
  align-content: end;
  min-height: var(--contact-hero-min);
}

.page-contact .contact-hero .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  list-style: none;
  margin: 0 0 var(--space-2);
  padding: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-contrast-ink);
}

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

.page-contact .contact-hero .breadcrumb-list a {
  color: var(--color-contrast-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) dotted var(--color-contrast-line);
}

.page-contact .contact-hero .breadcrumb-list a:hover,
.page-contact .contact-hero .breadcrumb-list a:focus-visible {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
}

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

.page-contact .contact-hero h1 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
  max-width: 18ch;
}

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

/* ---------- 渠道并列台 ---------- */
.page-contact .contact-channels {
  background-color: var(--color-surface);
}

.page-contact .channels-head {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.page-contact .channels-head h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-contact .channel-deck {
  display: grid;
  gap: var(--space-4);
}

.page-contact .channel-card {
  position: relative;
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface-alt);
  box-shadow: var(--shadow-2);
  display: grid;
  gap: var(--space-2);
  align-content: start;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(calc(-1 * var(--contact-card-lift)));
  box-shadow: var(--shadow-1);
}

.page-contact .channel-card--mail {
  background-color: var(--color-primary-soft);
  border-color: color-mix(in srgb, var(--color-primary) 45%, var(--color-line));
}

.page-contact .channel-card--phone {
  background-color: var(--color-highlight);
  border-color: color-mix(in srgb, var(--color-accent) 45%, var(--color-line));
}

.page-contact .channel-card--addr {
  background-color: var(--color-surface-deep);
  border-color: color-mix(in srgb, var(--color-ink-muted) 30%, var(--color-line));
}

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

.page-contact .channel-value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-lg);
  line-height: 1.4;
  color: var(--color-ink);
  overflow-wrap: anywhere;
  word-break: break-word;
  padding-block: var(--space-1);
  border-top: var(--border-thin) dotted var(--color-line);
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-contact .channel-value--mail {
  color: color-mix(in srgb, var(--color-primary) 82%, var(--color-ink));
}

.page-contact .channel-value--phone {
  color: color-mix(in srgb, var(--color-accent) 85%, var(--color-ink));
}

.page-contact .channel-value--addr {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-ink);
}

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

.page-contact .channel-points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-1);
}

.page-contact .channel-points li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
}

.page-contact .channel-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background-color: var(--color-primary);
}

.page-contact .channel-card--phone .channel-points li::before {
  background-color: var(--color-accent);
}

.page-contact .channel-card--addr .channel-points li::before {
  background-color: var(--color-ink-muted);
  border-radius: var(--radius-pill);
}

/* ---------- 入口对照 ---------- */
.page-contact .contact-routes {
  background-color: var(--color-surface-alt);
}

.page-contact .routes-grid {
  align-items: start;
}

.page-contact .routes-intro {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.page-contact .routes-intro h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-contact .route-stack {
  display: grid;
  gap: 0;
}

.page-contact .route-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  padding-block: var(--space-4);
  border-top: var(--border-thin) dotted var(--color-line);
}

.page-contact .route-item:last-child {
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-contact .route-no {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  line-height: 1.6;
}

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

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

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

.page-contact .route-text a {
  color: color-mix(in srgb, var(--color-primary) 82%, var(--color-ink));
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 45%, transparent);
}

.page-contact .route-text a:hover,
.page-contact .route-text a:focus-visible {
  border-bottom-color: var(--color-primary);
}

.page-contact .route-channel {
  justify-self: start;
  margin-top: var(--space-1);
  padding: 4px var(--space-2);
  border-radius: var(--radius-pill);
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

/* ---------- 咨询前准备 ---------- */
.page-contact .contact-prepare {
  background-color: var(--color-surface);
}

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

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

.page-contact .prep-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-3);
}

.page-contact .prep-item {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-4);
  border-left: var(--border-thick) solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background-color: var(--color-surface-alt);
  transition: background-color 160ms ease, border-left-color 160ms ease;
}

.page-contact .prep-item:nth-child(2) {
  border-left-color: var(--color-accent);
  background-color: var(--color-highlight);
}

.page-contact .prep-item:nth-child(3) {
  border-left-color: var(--color-ink-muted);
  background-color: var(--color-surface-deep);
}

.page-contact .prep-item:nth-child(4) {
  border-left-color: color-mix(in srgb, var(--color-primary) 55%, var(--color-accent));
  background-color: var(--color-primary-soft);
}

.page-contact .prep-item:hover {
  background-color: var(--color-surface);
}

.page-contact .prep-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

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

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

/* ---------- 回应节奏（深区） ---------- */
.page-contact .contact-response {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

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

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

.page-contact .response-lede {
  margin: 0;
  color: var(--color-contrast-ink);
}

.page-contact .response-facts {
  display: grid;
  gap: 0;
  margin-bottom: var(--space-4);
}

.page-contact .fact-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding-block: var(--space-2);
  border-bottom: var(--border-thin) dotted var(--color-contrast-line);
}

.page-contact .fact-key {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-contact .fact-val {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-contrast-accent);
  overflow-wrap: anywhere;
}

.page-contact .response-rule {
  margin: var(--space-6) 0 var(--space-4);
  border: 0;
  border-top: var(--border-thin) dashed var(--color-contrast-line);
}

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

/* ---------- 地址与到访 ---------- */
.page-contact .contact-visit {
  background-color: var(--color-surface);
}

.page-contact .visit-grid {
  align-items: start;
  gap: var(--space-6);
}

.page-contact .visit-copy {
  display: grid;
  gap: var(--space-2);
}

.page-contact .visit-copy h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-contact .visit-address {
  margin-top: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-style: normal;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 700;
  line-height: 1.6;
  color: var(--color-ink);
  background-color: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-1);
  overflow-wrap: anywhere;
}

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

.page-contact .visit-figure .figure-media,
.page-contact .visit-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  filter: saturate(0.65) contrast(1.04);
}

.page-contact .visit-figure .figure-caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

/* ---------- 备案 ---------- */
.page-contact .contact-filing {
  background-color: var(--color-surface-alt);
}

.page-contact .filing-shell {
  display: grid;
  gap: var(--space-2);
  max-width: var(--measure);
}

.page-contact .contact-filing h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-contact .filing-icp {
  margin: var(--space-1) 0 0;
  display: inline-block;
  justify-self: start;
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-ink);
  background-color: var(--color-highlight);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-accent) 40%, var(--color-line));
  border-radius: var(--radius-sm);
  overflow-wrap: anywhere;
}

/* ---------- 行动出口 ---------- */
.page-contact .contact-exit {
  background-color: var(--color-surface-deep);
}

.page-contact .exit-shell {
  display: grid;
  gap: var(--space-4);
}

.page-contact .exit-block {
  display: grid;
  gap: var(--space-3);
}

.page-contact .exit-block h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

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

.page-contact .exit-text a {
  color: color-mix(in srgb, var(--color-primary) 82%, var(--color-ink));
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 45%, transparent);
}

.page-contact .exit-text a:hover,
.page-contact .exit-text a:focus-visible {
  border-bottom-color: var(--color-primary);
}

.page-contact .exit-links {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.page-contact .exit-note {
  padding: var(--space-3) var(--space-4);
  border-left: var(--border-thick) solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background-color: var(--color-surface);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-contact .exit-note p {
  margin: 0;
}

/* ---------- 焦点可见性 ---------- */
.page-contact a:focus-visible,
.page-contact .channel-card:focus-within {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 3px;
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-contact .contact-hero h1 {
    font-size: var(--text-4xl);
    max-width: 16ch;
  }

  .page-contact .channel-deck {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .channel-card--addr {
    grid-column: 1 / -1;
  }

  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .fact-row {
    grid-template-columns: minmax(0, 8rem) minmax(0, 1fr);
    align-items: baseline;
    gap: var(--space-2);
  }

  .page-contact .exit-shell {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-contact .contact-hero {
    padding-block: var(--space-8) var(--section-y-lg);
  }

  .page-contact .channel-deck {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    gap: var(--space-6);
  }

  .page-contact .channel-card--addr {
    grid-column: auto;
  }

  .page-contact .channel-card--phone {
    transform: translateY(var(--space-6));
  }

  .page-contact .channel-card--addr {
    transform: translateY(var(--space-3));
  }

  .page-contact .channel-card--phone:hover,
  .page-contact .channel-card--phone:focus-within {
    transform: translateY(calc(var(--space-6) - var(--contact-card-lift)));
  }

  .page-contact .channel-card--addr:hover,
  .page-contact .channel-card--addr:focus-within {
    transform: translateY(calc(var(--space-3) - var(--contact-card-lift)));
  }

  .page-contact .route-stack {
    margin-top: var(--space-2);
  }

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

  .page-contact .prep-item:nth-child(even) {
    margin-top: var(--space-6);
  }
}

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

  .page-contact .channel-card--phone,
  .page-contact .channel-card--addr {
    transform: none;
  }

  .page-contact .channel-card--phone:hover,
  .page-contact .channel-card--phone:focus-within,
  .page-contact .channel-card--addr:hover,
  .page-contact .channel-card--addr:focus-within {
    transform: none;
  }
}