.page-contact {
  --ct-desk-bg: linear-gradient(180deg, rgba(6, 18, 15, 0.72), rgba(11, 31, 26, 0.18));
  --ct-wine-bg: linear-gradient(158deg, rgba(110, 31, 53, 0.66), rgba(110, 31, 53, 0.12));
  padding-bottom: clamp(56px, 9vw, 104px);
}

/* ---------- 首屏说明 ---------- */
.page-contact .ct-head {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding-top: clamp(26px, 5vw, 54px);
  padding-bottom: clamp(26px, 4vw, 42px);
  border-bottom: 1px solid var(--lb-line);
}

.page-contact .ct-head__title {
  margin: 14px 0 0;
  max-width: 20ch;
}

.page-contact .ct-head__lead {
  margin-top: 18px;
  max-width: 62ch;
  color: var(--lb-warm);
  opacity: 0.84;
}

.page-contact .ct-head__vnote {
  align-self: flex-start;
  color: var(--lb-mist);
}

/* ---------- 左右分屏骨架 ---------- */
.page-contact .ct-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 48px);
  padding-top: clamp(28px, 5vw, 52px);
}

/* ---------- 左栏渠道清单 ---------- */
.page-contact .ct-desk {
  background: var(--ct-desk-bg);
  border: 1px solid var(--lb-line);
  border-radius: var(--lb-radius);
  padding: 22px 18px 24px;
}

.page-contact .ct-desk__title {
  margin: 0 0 6px;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--lb-warm);
  letter-spacing: 0.02em;
}

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

.page-contact .ct-channel {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 12px;
  border-top: 1px solid var(--lb-line);
  transition: background-color 0.22s var(--lb-ease), box-shadow 0.22s var(--lb-ease);
}

.page-contact .ct-channel:last-child {
  border-bottom: 1px solid var(--lb-line);
}

.page-contact .ct-channel:hover {
  background-color: var(--lb-ink-deep);
  box-shadow: inset 2px 0 0 var(--lb-orange);
}

.page-contact .ct-channel__label {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--lb-mist);
}

.page-contact .ct-channel__value {
  color: var(--lb-warm);
  font-size: 0.9375rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-contact .ct-channel__value--mail {
  font-family: var(--lb-font-mono);
  font-variant-numeric: tabular-nums;
  border-bottom: 1px solid var(--lb-line);
  padding-bottom: 4px;
}

.page-contact .ct-channel__value--tel {
  font-size: clamp(1.65rem, 8vw, 2.4rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--lb-orange);
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
}

.page-contact .ct-channel__meta {
  font-size: 0.8125rem;
  color: var(--lb-mist);
  line-height: 1.6;
}

.page-contact .ct-desk__note {
  margin: 18px 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--lb-mist);
}

/* ---------- 右栏主体 ---------- */
.page-contact .ct-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(32px, 6vw, 64px);
}

.page-contact .ct-hero-figure {
  margin: 0;
}

.page-contact .ct-block {
  padding-top: 4px;
}

.page-contact .ct-h2 {
  font-size: clamp(1.5rem, 3.6vw, 2rem);
  line-height: 1.25;
}

.page-contact .ct-h3 {
  margin: 0 0 10px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--lb-cyan);
  letter-spacing: 0.02em;
}

.page-contact .ct-text {
  margin-top: 14px;
  max-width: 60ch;
}

/* ---------- 纠错步骤 ---------- */
.page-contact .ct-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0 0 0 20px;
  position: relative;
}

.page-contact .ct-steps::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, var(--lb-cyan), var(--lb-line) 70%, transparent);
}

.page-contact .ct-step {
  position: relative;
  padding: 6px 0 10px;
}

.page-contact .ct-step::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 20px;
  width: 7px;
  height: 7px;
  margin-left: -3px;
  border: 1px solid var(--lb-cyan);
  border-radius: 50%;
  background: var(--lb-ink);
}

.page-contact .ct-step__sum {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 8px 0;
  cursor: pointer;
  list-style: none;
}

.page-contact .ct-step__sum::-webkit-details-marker {
  display: none;
}

.page-contact .ct-step__no {
  color: var(--lb-orange);
  font-size: 0.9375rem;
  flex: none;
}

.page-contact .ct-step__name {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--lb-warm);
  line-height: 1.5;
}

.page-contact .ct-step__arrow,
.page-contact .ct-type__arrow {
  margin-left: auto;
  flex: none;
  width: 8px;
  height: 8px;
  border-right: 1px solid var(--lb-mist);
  border-bottom: 1px solid var(--lb-mist);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.22s var(--lb-ease), border-color 0.22s var(--lb-ease);
}

.page-contact details[open] > .ct-step__sum .ct-step__arrow,
.page-contact details[open] > .ct-type__sum .ct-type__arrow {
  transform: rotate(-135deg) translate(-2px, -2px);
  border-color: var(--lb-orange);
}

.page-contact .ct-step__sum:hover .ct-step__name {
  color: var(--lb-cyan-soft);
}

.page-contact .ct-step__body {
  padding: 2px 0 6px 34px;
  color: var(--lb-mist);
  font-size: 0.9375rem;
  line-height: 1.75;
  animation: ct-fade-in 0.24s var(--lb-ease);
}

.page-contact .ct-step__body p {
  margin: 0;
  border-left: 1px solid var(--lb-line);
  padding-left: 14px;
}

.page-contact .ct-flow-figure {
  margin: 30px 0 0;
}

/* ---------- 引用规则 ---------- */
.page-contact .ct-rules {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .ct-rules__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 18px;
  border: 1px solid var(--lb-line);
  border-radius: var(--lb-radius);
  background: rgba(43, 42, 94, 0.16);
  transition: border-color 0.22s var(--lb-ease);
}

.page-contact .ct-rules__item:hover {
  border-color: var(--lb-orange);
}

.page-contact .ct-rules__mark {
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: 6px;
  background: var(--lb-cyan);
  transform: rotate(45deg);
}

.page-contact .ct-rules__item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--lb-warm);
  opacity: 0.9;
}

/* ---------- 共建区块 ---------- */
.page-contact .ct-block--wine {
  background: var(--ct-wine-bg);
  border: 1px solid var(--lb-line);
  border-radius: var(--lb-radius);
  padding: clamp(22px, 4vw, 34px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), 0 100%);
}

.page-contact .ct-build-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 24px;
}

.page-contact .ct-plain {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .ct-plain li {
  position: relative;
  padding-left: 16px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--lb-warm);
  opacity: 0.88;
}

.page-contact .ct-plain li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--lb-orange);
}

.page-contact .ct-build-note {
  margin: 24px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(246, 243, 236, 0.16);
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--lb-warm);
  opacity: 0.78;
}

/* ---------- 洽询类型 ---------- */
.page-contact .ct-types {
  margin-top: 24px;
  border-top: 1px solid var(--lb-line);
}

.page-contact .ct-type {
  border-bottom: 1px solid var(--lb-line);
}

.page-contact .ct-type__sum {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.22s var(--lb-ease);
}

.page-contact .ct-type__sum::-webkit-details-marker {
  display: none;
}

.page-contact .ct-type__sum:hover {
  background-color: rgba(6, 18, 15, 0.72);
}

.page-contact .ct-type__name {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--lb-warm);
}

.page-contact .ct-type__hint {
  font-size: 0.8125rem;
  color: var(--lb-mist);
}

.page-contact .ct-type__body {
  padding: 0 4px 18px;
  animation: ct-fade-in 0.24s var(--lb-ease);
}

.page-contact .ct-type__body p {
  margin: 8px 0 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--lb-mist);
}

.page-contact .ct-code {
  font-family: var(--lb-font-mono);
  font-size: 0.875rem;
  color: var(--lb-cyan);
  border-left: 2px solid var(--lb-orange);
  padding-left: 12px;
  overflow-wrap: anywhere;
}

/* ---------- 延伸入口 ---------- */
.page-contact .ct-block--next {
  border-top: 1px solid var(--lb-line);
  padding-top: clamp(24px, 4vw, 36px);
}

.page-contact .ct-next {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
}

.page-contact .ct-next__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--lb-line);
}

.page-contact .ct-next__link {
  color: var(--lb-warm);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border-bottom: 1px solid var(--lb-line);
  align-self: flex-start;
  transition: color 0.22s var(--lb-ease), border-color 0.22s var(--lb-ease);
}

.page-contact .ct-next__link:hover {
  color: var(--lb-orange);
  border-color: var(--lb-orange);
}

.page-contact .ct-next__desc {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--lb-mist);
}

@keyframes ct-fade-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 599px) {
  .page-contact .ct-head__title {
    max-width: 100%;
  }

  .page-contact .ct-step__body {
    padding-left: 18px;
  }

  .page-contact .ct-block--wine {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), 0 100%);
  }
}

/* ---------- 桌面分屏 ---------- */
@media (min-width: 960px) {
  .page-contact .ct-head {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: 48px;
  }

  .page-contact .ct-head__vnote {
    margin-bottom: 10px;
  }

  .page-contact .ct-split {
    grid-template-columns: minmax(270px, 5fr) minmax(0, 9fr);
    gap: clamp(40px, 5vw, 76px);
    align-items: start;
  }

  .page-contact .ct-desk {
    position: sticky;
    top: calc(var(--lb-hd) + 26px);
    padding: 26px 22px 30px;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), 0 100%);
  }

  .page-contact .ct-build-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
  }

  .page-contact .ct-next {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }

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

  .page-contact .ct-rules__item:first-child {
    grid-column: span 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-step__body,
  .page-contact .ct-type__body {
    animation: none;
  }
}