.page-contact {
  --ct-card-accent: var(--blue);
  --ct-flow-gap: clamp(28px, 4vw, 52px);
}

.page-contact .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* 首屏 */
.page-contact .ct-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(24px, 5vw, 56px) clamp(30px, 5vw, 64px);
  border-bottom: 1px solid var(--edge);
}

.page-contact .ct-hero::before {
  content: "";
  position: absolute;
  inset: -30% -20% auto -10%;
  height: 120%;
  background:
    radial-gradient(60% 55% at 18% 12%, rgba(46, 123, 255, 0.28), transparent 70%),
    radial-gradient(45% 45% at 82% 0%, rgba(164, 76, 255, 0.24), transparent 72%),
    linear-gradient(160deg, var(--ink-900), var(--ink-950) 62%);
  pointer-events: none;
  z-index: -1;
}

.page-contact .ct-hero-grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  grid-template-columns: 1fr;
}

.page-contact .ct-hero-copy .display {
  margin: 10px 0 16px;
  max-width: 18ch;
}

.page-contact .ct-hero-copy .lede {
  max-width: 60ch;
  color: var(--mute);
}

.page-contact .ct-quick {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .ct-quick-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 16px;
  border: 1px solid var(--edge);
  border-radius: var(--radius-pill);
  background: rgba(14, 23, 48, 0.72);
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
  min-width: 0;
}

.page-contact .ct-quick-item:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
}

.page-contact .ct-quick-label {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.page-contact .ct-quick-value {
  font-size: 0.8125rem;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .ct-num {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.page-contact .ct-hero-rail {
  display: grid;
  gap: 0;
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(27, 30, 74, 0.9), rgba(7, 10, 18, 0.86));
  overflow: hidden;
  align-self: start;
}

.page-contact .ct-rail-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding: 14px 18px;
  border-bottom: 1px dashed var(--edge);
}

.page-contact .ct-rail-row:last-child {
  border-bottom: 0;
}

.page-contact .ct-rail-k {
  font-size: 0.8125rem;
  color: var(--mute);
  white-space: nowrap;
}

.page-contact .ct-rail-v {
  font-size: 0.875rem;
  color: var(--paper);
  text-align: right;
  overflow-wrap: anywhere;
}

.page-contact .ct-rail-v--mint {
  color: var(--mint);
}

/* 渠道卡片 */
.page-contact .ct-figure {
  margin: clamp(20px, 3vw, 32px) 0 0;
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(140deg, var(--ink-900), var(--ink-950));
}

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

.page-contact .ct-figure .media-caption {
  padding: 12px 18px 16px;
  font-size: 0.8125rem;
  color: var(--mute);
  line-height: 1.7;
}

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

.page-contact .ct-figure--flow {
  margin-top: 24px;
}

.page-contact .ct-figure--flow img {
  aspect-ratio: 2 / 1;
}

.page-contact .ct-channel-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-contact .ct-channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 22px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--edge);
  background: linear-gradient(165deg, var(--ink-900), rgba(7, 10, 18, 0.9));
  overflow: hidden;
  transition: transform 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .ct-channel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--ct-card-accent);
}

.page-contact .ct-channel--blue { --ct-card-accent: var(--blue); }
.page-contact .ct-channel--violet { --ct-card-accent: var(--violet); }
.page-contact .ct-channel--amber { --ct-card-accent: var(--amber); }

.page-contact .ct-channel:hover {
  transform: translateY(-4px);
  border-color: var(--ct-card-accent);
}

.page-contact .ct-channel .tag {
  align-self: flex-start;
}

.page-contact .ct-channel .card-title {
  margin: 0;
  font-size: clamp(1.15rem, 2.4vw, 1.35rem);
  color: var(--paper);
}

.page-contact .ct-channel-meta {
  margin: 4px 0 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--edge);
  display: grid;
  gap: 6px;
}

.page-contact .ct-channel-meta dt {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.page-contact .ct-channel-meta dd {
  margin: 0 0 8px;
  font-size: 0.8125rem;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .ct-channel-meta dd:last-child {
  margin-bottom: 0;
}

.page-contact .ct-channel-link {
  margin-top: auto;
  align-self: flex-start;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-contact .ct-channel-link::after {
  content: " →";
  font-family: var(--font-mono);
}

.page-contact .ct-channel-link:hover,
.page-contact .ct-channel-link:focus-visible {
  color: var(--mint);
  border-bottom-color: var(--mint);
}

/* 左窄右宽说明流 */
.page-contact .ct-body-grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  grid-template-columns: 1fr;
}

.page-contact .ct-aside {
  padding: 24px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--edge);
  background: linear-gradient(180deg, rgba(27, 30, 74, 0.75), rgba(14, 23, 48, 0.9));
  align-self: start;
}

.page-contact .ct-aside-title {
  font-size: 1.35rem;
  margin: 0 0 12px;
}

.page-contact .ct-reach-list {
  margin: 18px 0 0;
  display: grid;
  gap: 0;
}

.page-contact .ct-reach-row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--edge);
}

.page-contact .ct-reach-row:last-child {
  border-bottom: 0;
}

.page-contact .ct-reach-row dt {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.page-contact .ct-reach-row dd {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .ct-aside-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--edge);
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--mute);
}

.page-contact .ct-inline-link {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 123, 255, 0.45);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-contact .ct-inline-link:hover,
.page-contact .ct-inline-link:focus-visible {
  color: var(--mint);
  border-bottom-color: var(--mint);
}

.page-contact .ct-flows {
  display: grid;
  gap: var(--ct-flow-gap);
  min-width: 0;
}

.page-contact .ct-flow {
  padding-top: 4px;
  border-top: 1px solid var(--edge);
}

.page-contact .ct-flow .eyebrow {
  margin-top: 16px;
}

.page-contact .ct-flow-title {
  margin: 8px 0 12px;
  font-size: clamp(1.25rem, 3vw, 1.65rem);
  max-width: 24ch;
}

.page-contact .ct-flow .card-text {
  max-width: 62ch;
}

.page-contact .ct-steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-contact .ct-step {
  position: relative;
  padding-left: 56px;
}

.page-contact .ct-step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 44px;
  bottom: -22px;
  width: 1px;
  background: linear-gradient(180deg, var(--edge), rgba(42, 53, 80, 0.1));
}

.page-contact .ct-step-index {
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--edge);
  background: var(--ink-900);
  color: var(--mint);
  font-size: 0.8125rem;
}

.page-contact .ct-step-title {
  margin: 6px 0 6px;
  font-size: 1rem;
  color: var(--paper);
}

.page-contact .ct-step-body .card-text {
  margin: 0;
  font-size: 0.9375rem;
}

.page-contact .ct-partner-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-contact .ct-partner-item {
  padding: 18px 18px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--edge);
  background: linear-gradient(150deg, rgba(14, 23, 48, 0.9), rgba(7, 10, 18, 0.72));
  transition: border-color 180ms var(--ease);
}

.page-contact .ct-partner-item:hover {
  border-color: var(--violet);
}

.page-contact .ct-partner-item h4 {
  margin: 0 0 6px;
  font-size: 0.9375rem;
  color: var(--paper);
}

.page-contact .ct-partner-item .card-text {
  margin: 0;
  font-size: 0.875rem;
}

/* 收束 */
.page-contact .ct-close {
  border-top: 1px solid var(--edge);
  background:
    radial-gradient(70% 120% at 80% 0%, rgba(164, 76, 255, 0.22), transparent 70%),
    linear-gradient(180deg, rgba(7, 10, 18, 0.4), rgba(14, 23, 48, 0.85));
}

.page-contact .ct-close-inner {
  display: grid;
  gap: 14px;
  justify-items: start;
}

.page-contact .ct-close-inner .title {
  margin: 0;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
}

.page-contact .ct-close-inner .lede {
  margin: 0;
  max-width: 58ch;
  color: var(--mute);
}

.page-contact .ct-close-inner .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 720px) {
  .page-contact .ct-channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .ct-partner-item:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 960px) {
  .page-contact .ct-hero-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.8fr);
    align-items: start;
  }

  .page-contact .ct-channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .ct-body-grid {
    grid-template-columns: minmax(260px, 0.62fr) minmax(0, 1.38fr);
  }

  .page-contact .ct-aside {
    position: sticky;
    top: calc(var(--frame-h) + 18px);
  }

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

  .page-contact .ct-partner-item:first-child {
    grid-column: auto;
  }

  .page-contact .ct-close-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 20px 32px;
  }

  .page-contact .ct-close-inner .title,
  .page-contact .ct-close-inner .lede {
    grid-column: 1;
  }

  .page-contact .ct-close-inner .actions {
    grid-column: 2;
    grid-row: 1 / span 2;
    justify-content: flex-end;
  }
}

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

  .page-contact .ct-channel:hover,
  .page-contact .ct-quick-item:hover {
    transform: none;
  }
}