.page-contact {
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-contact .contact-crumb {
  padding: var(--space-3) 0 var(--space-2);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-surface);
}

.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.page-contact .breadcrumbs li {
  display: flex;
  align-items: center;
}

.page-contact .breadcrumbs li + li::before {
  content: "/";
  padding: 0 var(--space-1);
  color: var(--color-line);
}

.page-contact .breadcrumbs a {
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color 140ms ease-out;
}

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

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    118deg,
    transparent 0 30px,
    color-mix(in srgb, var(--color-line) 62%, transparent) 30px 31px
  );
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.5), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.5), transparent 76%);
  pointer-events: none;
  z-index: 0;
}

.page-contact .contact-hero .container {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

.page-contact .contact-hero__copy {
  min-width: 0;
}

.page-contact .kicker {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-contact h1 {
  margin: 0 0 var(--space-3);
  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-ink);
  max-width: 18ch;
}

.page-contact .contact-hero__lead {
  margin: 0;
  max-width: 58ch;
  font-size: var(--text-base);
  color: var(--color-ink-soft);
}

.page-contact .contact-times {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin: var(--space-4) 0 0;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-line);
}

.page-contact .contact-time {
  margin: 0;
  min-width: 0;
}

.page-contact .contact-time__label {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-contact .contact-time__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.page-contact .contact-time__num .underline-accent {
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 2px;
}

.page-contact .contact-hero__figure {
  margin: 0;
  min-width: 0;
}

.page-contact .contact-hero__figure .figure__frame {
  overflow: hidden;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .figure__caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

/* ---------- 通用区块头 ---------- */
.page-contact .contact-head {
  margin-bottom: var(--space-6);
  border-left: 2px solid var(--color-primary);
  padding-left: var(--space-3);
}

.page-contact .contact-head__title {
  margin: 0 0 var(--space-2);
  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);
  max-width: 24ch;
}

.page-contact .contact-head__note {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ---------- 渠道清单 ---------- */
.page-contact .contact-channels {
  background: var(--color-surface-alt);
}

.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-line);
}

.page-contact .channel {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-line);
}

.page-contact .channel__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-contact .channel__body {
  min-width: 0;
}

.page-contact .channel__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

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

.page-contact .channel__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
}

.page-contact .channel__value {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
}

.page-contact .channel__value-text {
  font-family: var(--font-mono);
  color: var(--color-ink);
  word-break: break-all;
}

.page-contact .channel__value-link {
  font-family: var(--font-mono);
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-contact .channel__desc {
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-contact .channel__more {
  margin-top: var(--space-3);
}

.page-contact .channel__more .expander__summary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
}

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

.page-contact .channel__more .expander__summary::before {
  content: "+";
  display: inline-block;
  width: 1em;
  font-family: var(--font-mono);
  color: var(--color-ink-muted);
}

.page-contact .channel__more[open] .expander__summary::before {
  content: "−";
}

.page-contact .channel__more .expander__body {
  margin-top: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-line);
}

.page-contact .channel__facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin: 0;
}

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

.page-contact .channel__fact dt {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

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

/* ---------- 来信准备 ---------- */
.page-contact .contact-prepare__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

.page-contact .contact-prepare__intro h2 {
  margin: 0 0 var(--space-3);
  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 .contact-prepare__intro p {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-contact .contact-prepare__warn {
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-deep);
  border-left: 2px solid var(--color-accent);
  color: var(--color-ink) !important;
}

.page-contact .contact-prepare__warn .mark {
  background: var(--color-highlight);
  color: var(--color-ink);
  padding: 1px 3px;
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: var(--space-2);
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-line);
}

.page-contact .prep-item:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-contact .prep-item__idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-top: 2px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

.page-contact .prep-item__body {
  min-width: 0;
}

.page-contact .prep-item__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-contact .prep-item__body p {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ---------- 自助入口 ---------- */
.page-contact .contact-self {
  background: var(--color-surface-alt);
}

.page-contact .self-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  list-style: none;
  margin: 0 0 var(--space-6);
  padding: 0;
  border-top: 1px solid var(--color-line);
}

.page-contact .self-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-line);
}

.page-contact .self-item__rank {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-accent);
}

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

.page-contact .self-item__desc {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  flex: 1 1 auto;
}

.page-contact .self-item__link {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--color-primary);
  padding-bottom: 2px;
  transition: color 140ms ease-out, border-color 140ms ease-out;
}

.page-contact .self-item__link:hover,
.page-contact .self-item__link:focus-visible {
  color: var(--color-focus);
  border-color: var(--color-focus);
}

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

.page-contact .contact-self__figure .figure__frame {
  overflow: hidden;
  background: var(--color-surface-deep);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}

.page-contact .contact-self__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 1;
  object-fit: cover;
}

/* ---------- 条款面板 ---------- */
.page-contact .contact-terms__panel {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-6) var(--space-4);
  border-radius: var(--radius-sm);
}

.page-contact .contact-terms__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

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

.page-contact .contact-terms__intro h2 {
  margin: 0 0 var(--space-3);
  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-contrast-ink);
}

.page-contact .contact-terms__intro p {
  margin: 0;
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 76%, transparent);
}

.page-contact .contact-terms__links {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-contrast-line);
}

.page-contact .contact-terms__link {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-contrast-line);
  text-decoration: none;
  transition: background-color 140ms ease-out;
}

.page-contact .contact-terms__link:hover,
.page-contact .contact-terms__link:focus-visible {
  background: color-mix(in srgb, var(--color-contrast-ink) 6%, transparent);
}

.page-contact .contact-terms__link-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-accent);
}

.page-contact .contact-terms__link-desc {
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent);
}

/* ---------- 登记信息 ---------- */
.page-contact .contact-registry__title {
  margin: 0 0 var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-contact .registry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-line);
}

.page-contact .registry-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-line);
}

.page-contact .registry-item__key {
  flex: 0 0 auto;
  min-width: 9em;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-contact .registry-item__val {
  flex: 1 1 12em;
  min-width: 0;
  font-size: var(--text-sm);
  color: var(--color-ink);
  word-break: break-all;
}

.page-contact .registry-note {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  font-size: var(--text-xs);
  line-height: 1.8;
  color: var(--color-ink-muted);
}

/* ---------- 复制按钮 ---------- */
.page-contact .copy-btn {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  line-height: 1.5;
  color: var(--color-primary);
  background: transparent;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 3px 9px;
  cursor: pointer;
  transition: color 140ms ease-out, border-color 140ms ease-out, background-color 140ms ease-out;
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.page-contact .copy-btn.is-copied {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-highlight);
}

/* ---------- 收尾出口 ---------- */
.page-contact .contact-cta {
  position: relative;
}

.page-contact .contact-cta::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: var(--space-6);
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), transparent 62%);
  pointer-events: none;
}

.page-contact .contact-cta__inner {
  max-width: var(--measure);
  padding-top: var(--space-4);
}

.page-contact .contact-cta__title {
  margin: 0 0 var(--space-3);
  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 .contact-cta__text {
  margin: 0 0 var(--space-4);
  font-size: var(--text-base);
  color: var(--color-ink-soft);
}

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

/* ---------- 焦点态 ---------- */
.page-contact a:focus-visible,
.page-contact button:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-times {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-contact .contact-time__num {
    font-size: var(--text-3xl);
  }

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

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

@media (min-width: 820px) {
  .page-contact h1 {
    font-size: var(--text-4xl);
  }

  .page-contact .contact-head__title,
  .page-contact .contact-prepare__intro h2,
  .page-contact .contact-terms__intro h2,
  .page-contact .contact-cta__title {
    font-size: var(--text-2xl);
  }

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

  .page-contact .channel {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: var(--space-4);
    padding: var(--space-6) 0;
  }

  .page-contact .channel__num {
    font-size: var(--text-lg);
    letter-spacing: 0.08em;
  }

  .page-contact .self-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 0;
  }

  .page-contact .self-item {
    padding: var(--space-4);
    border-bottom: 0;
    border-left: 1px solid var(--color-line);
  }

  .page-contact .self-item:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-contact .self-item:last-child {
    padding-right: 0;
  }

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

  .page-contact .contact-terms__grid {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-8);
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: var(--space-8);
  }

  .page-contact .contact-prepare__grid {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-8);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<END>>>