.page-contact {
  --ct-panel: rgba(20, 41, 68, .72);
  --ct-line-soft: rgba(31, 58, 92, .75);
  display: block;
  padding-block: 24px 72px;
}

.page-contact .breadcrumb {
  margin-bottom: 24px;
}

/* ---------- 页头 ---------- */
.page-contact .ct-head {
  display: grid;
  gap: 16px;
  padding-bottom: 32px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-head .eyebrow {
  margin: 0;
}

.page-contact .ct-head h1 {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-title);
  font-size: clamp(1.9rem, 7vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: .015em;
  color: var(--paper);
}

.page-contact .ct-lede {
  margin: 0;
  max-width: 68ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--edge);
}

.page-contact .ct-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-metachip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--ct-panel);
  font-size: .8125rem;
  color: var(--muted);
}

.page-contact .ct-metachip b {
  font-family: var(--font-num);
  font-weight: 600;
  color: var(--cy-light);
}

/* ---------- 通用区块标题 ---------- */
.page-contact .ct-topics__rail h2,
.page-contact .ct-channels h2,
.page-contact .ct-rhythm h2,
.page-contact .ct-flow h2,
.page-contact .ct-prep h2,
.page-contact .ct-boost h2,
.page-contact .ct-next h2 {
  margin: 0 0 12px;
  font-family: var(--font-title);
  font-size: clamp(1.5rem, 5vw, 2rem);
  line-height: 1.2;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-contact .ct-topics__note,
.page-contact .ct-channels__intro,
.page-contact .ct-flow__intro,
.page-contact .ct-prep__intro {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 三类事情 ---------- */
.page-contact .ct-topics {
  display: grid;
  gap: 26px;
  margin-bottom: 64px;
}

.page-contact .ct-tabs {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}

.page-contact .ct-tabs::-webkit-scrollbar {
  display: none;
}

.page-contact .ct-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--ct-panel);
  color: var(--paper);
  font-size: .9375rem;
  text-decoration: none;
  transition: border-color .25s var(--ease), background .25s var(--ease), transform .25s var(--ease);
}

.page-contact .ct-tab i {
  font-family: var(--font-num);
  font-style: normal;
  font-size: .75rem;
  color: var(--amber);
}

.page-contact .ct-tab:hover,
.page-contact .ct-tab:focus-visible {
  border-color: var(--cy);
  background: rgba(61, 232, 198, .1);
  transform: translateY(-1px);
}

.page-contact .ct-tab:focus-visible {
  outline: 2px solid var(--cy-light);
  outline-offset: 2px;
}

.page-contact .ct-topics__body {
  display: grid;
  gap: 16px;
}

.page-contact .ct-topic {
  scroll-margin-top: calc(var(--bar-h) + 24px);
  padding: 24px;
}

.page-contact .ct-topic__label {
  margin: 0 0 8px;
  font-family: var(--font-num);
  font-size: .6875rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-contact .ct-topic h3 {
  margin: 0 0 10px;
  font-family: var(--font-title);
  font-size: 1.375rem;
  line-height: 1.25;
  color: var(--paper);
}

.page-contact .ct-topic p:last-child {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--edge);
}

/* ---------- 联系渠道 ---------- */
.page-contact .ct-channels {
  margin-bottom: 64px;
}

.page-contact .ct-channels__grid {
  display: grid;
  gap: 20px;
}

.page-contact .ct-channels__cards {
  display: grid;
  gap: 16px;
}

.page-contact .ct-ch {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(20, 41, 68, .96), rgba(13, 27, 46, .96));
}

.page-contact .ct-ch__key {
  margin: 0 0 10px;
  font-size: .75rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .ct-ch__val {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: clamp(1rem, 4.4vw, 1.375rem);
  line-height: 1.35;
  color: var(--cy-light);
  word-break: break-word;
}

.page-contact .ct-ch__val--addr {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .ct-ch__desc {
  margin: 0;
  font-size: .875rem;
  line-height: 1.75;
  color: var(--edge);
}

.page-contact .ct-channels__media {
  margin: 0;
}

/* ---------- 回复节奏 ---------- */
.page-contact .ct-rhythm {
  margin-bottom: 64px;
  padding: 26px 24px;
  border: 1px solid var(--ct-line-soft);
  border-left: 3px solid var(--cy);
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, rgba(14, 124, 107, .3), rgba(13, 27, 46, .94) 62%);
}

.page-contact .ct-rhythm__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-contact .ct-rhythm__row {
  display: grid;
  gap: 6px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--ct-line-soft);
}

.page-contact .ct-rhythm__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .ct-rhythm__key {
  font-family: var(--font-num);
  font-size: .75rem;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-contact .ct-rhythm__val {
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--paper);
}

/* ---------- 接入流程 ---------- */
.page-contact .ct-flow {
  margin-bottom: 64px;
}

.page-contact .ct-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-contact .ct-step {
  padding: 22px 22px 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ct-panel);
}

.page-contact .ct-step__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 12px;
  border-radius: 50%;
  background: var(--amber);
  color: #1B1206;
  font-family: var(--font-num);
  font-size: .875rem;
  font-weight: 700;
}

.page-contact .ct-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-title);
  font-size: 1.125rem;
  color: var(--paper);
}

.page-contact .ct-step p {
  margin: 0;
  font-size: .875rem;
  line-height: 1.75;
  color: var(--edge);
}

.page-contact .ct-flow__media {
  margin: 20px 0 0;
}

/* ---------- 准备清单 ---------- */
.page-contact .ct-prep {
  margin-bottom: 64px;
}

.page-contact .ct-checks {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .ct-check label {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  min-height: 44px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(13, 27, 46, .82);
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--paper);
  cursor: pointer;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-contact .ct-check label:hover {
  border-color: var(--cy-deep);
}

.page-contact .ct-check input {
  position: relative;
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  margin: 2px 0 0;
  border: 2px solid var(--line);
  border-radius: 7px;
  background: transparent;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-contact .ct-check input:checked {
  border-color: var(--cy);
  background: var(--cy);
}

.page-contact .ct-check input:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 1px;
  width: 6px;
  height: 11px;
  border: solid #06231D;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-contact .ct-check input:focus-visible {
  outline: 2px solid var(--cy-light);
  outline-offset: 2px;
}

.page-contact .ct-check:has(input:checked) label {
  border-color: var(--cy-deep);
  background: rgba(14, 124, 107, .2);
}

.page-contact .ct-meter {
  display: flex;
  gap: 6px;
}

.page-contact .ct-meter i {
  flex: 1 1 0;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--line);
  transition: background .3s var(--ease);
}

.page-contact .ct-checks:has(#prep-a:checked) ~ .ct-meter i:nth-child(-n+1),
.page-contact .ct-checks:has(#prep-b:checked) ~ .ct-meter i:nth-child(-n+2),
.page-contact .ct-checks:has(#prep-c:checked) ~ .ct-meter i:nth-child(-n+3),
.page-contact .ct-checks:has(#prep-d:checked) ~ .ct-meter i:nth-child(-n+4) {
  background: var(--cy);
}

/* ---------- 优先路径 ---------- */
.page-contact .ct-boost {
  display: grid;
  gap: 20px;
  margin-bottom: 56px;
  padding: 28px 24px;
  border: 1px solid var(--cy-deep);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(14, 124, 107, .52), rgba(13, 27, 46, .96) 70%);
}

.page-contact .ct-boost p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--paper);
}

.page-contact .ct-boost__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 延伸阅读 ---------- */
.page-contact .ct-next {
  padding-top: 8px;
}

.page-contact .ct-next__grid {
  gap: 14px;
}

.page-contact .ct-next__item {
  display: grid;
  gap: 6px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(20, 41, 68, .55);
  text-decoration: none;
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.page-contact .ct-next__item:hover,
.page-contact .ct-next__item:focus-visible {
  border-color: var(--cy);
  transform: translateY(-2px);
}

.page-contact .ct-next__item:focus-visible {
  outline: 2px solid var(--cy-light);
  outline-offset: 2px;
}

.page-contact .ct-next__num {
  font-family: var(--font-num);
  font-size: .75rem;
  letter-spacing: .14em;
  color: var(--amber);
}

.page-contact .ct-next__item strong {
  font-family: var(--font-title);
  font-size: 1.125rem;
  color: var(--paper);
}

.page-contact .ct-next__item span:last-child {
  font-size: .875rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .ct-tail {
  margin: 22px 0 0;
  font-size: .875rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .ct-tail a {
  color: var(--cy-light);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-contact .ct-tail a:hover,
.page-contact .ct-tail a:focus-visible {
  color: var(--cy);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact {
    padding-block: 32px 96px;
  }

  .page-contact .ct-topics {
    grid-template-columns: minmax(190px, 240px) minmax(0, 1fr);
    gap: 32px;
  }

  .page-contact .ct-tabs {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-contact .ct-tab {
    justify-content: flex-start;
  }

  .page-contact .ct-rhythm__row {
    grid-template-columns: 168px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }

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

  .page-contact .ct-channels__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }

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

@media (min-width: 1024px) {
  .page-contact .ct-topics {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 48px;
  }

  .page-contact .ct-topics__rail {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
    align-self: start;
  }

  .page-contact .ct-topic {
    padding: 28px;
  }

  .page-contact .ct-channels__cards {
    gap: 20px;
  }

  .page-contact .ct-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .ct-step {
    padding: 26px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-tab,
  .page-contact .ct-next__item,
  .page-contact .ct-check label,
  .page-contact .ct-meter i {
    transition: none;
  }

  .page-contact .ct-tab:hover,
  .page-contact .ct-next__item:hover {
    transform: none;
  }
}