.page-contact {
  --contact-tick-h: repeating-linear-gradient(90deg, var(--color-line) 0 2px, transparent 2px 10px);
  --contact-tick-h-deep: repeating-linear-gradient(90deg, var(--color-contrast-line) 0 2px, transparent 2px 10px);
  display: block;
}

/* ---------- 首屏彩色底 ---------- */
.page-contact .contact-head {
  position: relative;
  padding-block: var(--space-8) var(--space-8);
  background-color: var(--color-primary);
  background-image:
    radial-gradient(115% 135% at 92% -12%, color-mix(in srgb, var(--color-accent) 76%, transparent) 0%, transparent 58%),
    radial-gradient(85% 120% at 4% 112%, color-mix(in srgb, var(--color-contrast-surface) 52%, transparent) 0%, transparent 62%);
  color: var(--color-primary-ink);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

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

.page-contact .contact-head .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-primary-ink) 76%, transparent);
}

.page-contact .contact-head .breadcrumbs__list li {
  display: inline-flex;
  align-items: center;
}

.page-contact .contact-head .breadcrumbs__list li + li::before {
  content: "/";
  margin-right: var(--space-1);
  opacity: 0.55;
}

.page-contact .contact-head .breadcrumbs__list a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--color-primary-ink) 30%, transparent);
  transition: color 180ms ease, border-color 180ms ease;
}

.page-contact .contact-head .breadcrumbs__list a:hover {
  color: var(--color-primary-ink);
  border-bottom-color: currentColor;
}

.page-contact .contact-head__kicker {
  margin: var(--space-4) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: color-mix(in srgb, var(--color-primary-ink) 82%, transparent);
}

.page-contact .contact-head__title {
  margin: 0;
  max-width: 20ch;
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: 800;
  color: var(--color-primary-ink);
}

.page-contact .contact-head__lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-primary-ink) 88%, transparent);
}

/* ---------- 渠道一览玻璃面板 ---------- */
.page-contact .contact-channels {
  position: relative;
  z-index: 2;
}

.page-contact .contact-channels__panel {
  display: grid;
  gap: var(--space-3);
  margin-top: calc(var(--space-6) * -0.5);
  padding: var(--space-3);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-line) 82%, transparent);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--color-surface) 84%, transparent);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  backdrop-filter: blur(16px) saturate(1.2);
  box-shadow: var(--shadow-2);
}

.page-contact .contact-channels__title {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-contact .contact-channels__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-channels__item {
  display: grid;
  gap: 4px;
  padding-top: var(--space-2);
  background-image: var(--contact-tick-h);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: left top;
}

.page-contact .contact-channels__num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  white-space: nowrap;
}

.page-contact .contact-channels__label {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-contact .contact-channels__note {
  font-size: var(--text-xs);
  line-height: 1.55;
  color: var(--color-ink-muted);
}

/* ---------- 两条线对照 ---------- */
.page-contact .contact-lanes {
  padding-block: var(--section-y) var(--space-8);
}

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

.page-contact .contact-lanes__head .section-title {
  margin: 0;
}

.page-contact .contact-lanes__head .lede {
  margin: 0;
}

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

.page-contact .contact-plate .figure__media {
  aspect-ratio: 1280 / 560;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: var(--border-thin) solid color-mix(in srgb, var(--color-line) 80%, transparent);
}

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

.page-contact .contact-plate .figure__caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.55;
  color: var(--color-ink-muted);
}

.page-contact .contact-plate .figure__caption p {
  margin: 4px 0 0;
}

.page-contact .contact-lanes__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: var(--space-6);
}

.page-contact .contact-lane {
  position: relative;
  display: grid;
  align-content: start;
  gap: var(--space-3);
}

.page-contact .contact-lane + .contact-lane {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  background-image: var(--contact-tick-h);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: left top;
}

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

.page-contact .contact-lane__title {
  margin: 0;
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: 800;
  color: var(--color-ink);
}

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

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

.page-contact .contact-lane__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2);
  align-items: start;
}

.page-contact .contact-lane__code {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: color-mix(in srgb, var(--color-primary) 72%, var(--color-ink-muted));
}

.page-contact .contact-lane__name {
  margin: 0 0 4px;
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-contact .contact-lane__desc {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.66;
  color: var(--color-ink-soft);
}

.page-contact .contact-lane__send {
  margin: var(--space-2) 0 0;
  padding-top: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.66;
  color: var(--color-ink-soft);
  background-image: var(--contact-tick-h);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: left top;
}

.page-contact .contact-lane__send strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--color-ink);
}

/* ---------- 回复窗口与到访 ---------- */
.page-contact .contact-window {
  padding-block: var(--section-y);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

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

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

.page-contact .contact-window__lede {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent);
}

.page-contact .contact-window__rows {
  display: grid;
  gap: 0;
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-window__row {
  display: grid;
  gap: 4px;
  padding-block: var(--space-3);
}

.page-contact .contact-window__row + .contact-window__row {
  background-image: var(--contact-tick-h-deep);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: left top;
}

.page-contact .contact-window__key {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: color-mix(in srgb, var(--color-contrast-ink) 58%, transparent);
}

.page-contact .contact-window__val {
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-contrast-ink);
  word-break: break-word;
}

.page-contact .contact-window__val--mono {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  letter-spacing: 0.005em;
}

.page-contact .contact-window__hint {
  font-size: var(--text-xs);
  line-height: 1.55;
  color: color-mix(in srgb, var(--color-contrast-ink) 60%, transparent);
}

.page-contact .contact-window__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-top: 4px;
}

.page-contact .contact-window__note {
  margin: var(--space-4) 0 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent);
}

.page-contact .contact-window__note a {
  color: var(--color-contrast-accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color 180ms ease;
}

.page-contact .contact-window__note a:hover {
  color: var(--color-contrast-ink);
}

.page-contact .contact-copy {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-contrast-ink);
  background: color-mix(in srgb, var(--color-contrast-surface) 55%, transparent);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: border-color 180ms ease, color 180ms ease, background-color 180ms ease;
}

.page-contact .contact-copy:hover,
.page-contact .contact-copy:focus-visible {
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-accent);
}

.page-contact .contact-copy[data-copied="true"] {
  border-color: var(--color-contrast-accent);
  background: color-mix(in srgb, var(--color-contrast-accent) 20%, transparent);
  color: var(--color-contrast-accent);
}

.page-contact .contact-copy[data-copied="true"] .contact-copy__text::after {
  content: " ✓";
}

.page-contact .contact-window__aside {
  display: grid;
  gap: var(--space-3);
  justify-items: start;
}

.page-contact .contact-bearing {
  margin: 0;
  width: 100%;
}

.page-contact .contact-bearing .figure__media {
  aspect-ratio: 900 / 520;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: var(--border-thin) solid var(--color-contrast-line);
}

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

.page-contact .contact-bearing .figure__caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.55;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-contact .contact-bearing .figure__caption p {
  margin: 4px 0 0;
}

.page-contact .contact-bearing__compass {
  width: 56px;
  height: 56px;
  color: var(--color-contrast-accent);
  opacity: 0.8;
}

/* ---------- 准备清单 ---------- */
.page-contact .contact-prep {
  padding-block: var(--section-y) var(--space-8);
}

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

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

.page-contact .contact-prep__intro .section-title {
  margin: 0;
}

.page-contact .contact-prep__intro .lede {
  margin: 0;
}

.page-contact .contact-prep__list {
  display: grid;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-prep__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  align-items: start;
  padding-top: var(--space-3);
  background-image: var(--contact-tick-h);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: left top;
}

.page-contact .contact-prep__num {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-accent) 82%, var(--color-ink));
}

.page-contact .contact-prep__name {
  margin: 0 0 4px;
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-contact .contact-prep__desc {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.66;
  color: var(--color-ink-soft);
}

/* ---------- 行动出口 ---------- */
.page-contact .contact-exit {
  padding-block: 0 var(--section-y);
}

.page-contact .contact-exit__panel {
  padding: var(--space-6) var(--space-4);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 22%, transparent);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface-alt);
  background-image: linear-gradient(
    118deg,
    color-mix(in srgb, var(--color-primary-soft) 88%, var(--color-surface)) 0%,
    color-mix(in srgb, var(--color-highlight) 74%, var(--color-surface)) 100%
  );
}

.page-contact .contact-exit__title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: 800;
  color: var(--color-ink);
}

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

.page-contact .contact-exit__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-channels__panel {
    margin-top: calc(var(--space-6) * -1);
    padding: var(--space-4);
  }

  .page-contact .contact-channels__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4) var(--space-3);
  }

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

@media (min-width: 900px) {
  .page-contact .contact-head {
    padding-block: var(--section-y-lg) var(--section-y);
  }

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

  .page-contact .contact-lanes__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-8);
  }

  .page-contact .contact-lane + .contact-lane {
    margin-top: 0;
    padding-top: 0;
    padding-left: var(--space-8);
    background-image: none;
  }

  .page-contact .contact-lane + .contact-lane::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 1px;
    background-image: repeating-linear-gradient(180deg, var(--color-line) 0 4px, transparent 4px 12px);
  }

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

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

@media (min-width: 1024px) {
  .page-contact .contact-channels__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .contact-channels__panel {
    padding: var(--space-4) var(--space-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-copy,
  .page-contact .contact-head .breadcrumbs__list a,
  .page-contact .contact-window__note a {
    transition: none;
  }
}