.page-contact {
  --ct-cut: 18px;
  --ct-gap: clamp(20px, 3vw, 34px);
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  padding: clamp(26px, 6vw, 64px) 0 clamp(14px, 3vw, 28px);
}

.page-contact .ct-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 48px);
}

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

.page-contact .ct-hero-lede {
  margin-top: 18px;
  max-width: 34em;
}

.page-contact .ct-hero-note {
  margin: 24px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--sky-cyan);
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: .03em;
  color: var(--sky-title);
}

.page-contact .ct-hero-side {
  padding: 18px 18px 20px;
  border: 1px solid var(--sky-hair);
  border-left: 2px solid var(--sky-nebula-lift);
  background: linear-gradient(135deg, rgba(75, 58, 140, .3), rgba(16, 27, 54, .62));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%);
}

.page-contact .ct-side-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--sky-muted);
}

.page-contact .ct-side-value {
  margin: 10px 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 4vw, 21px);
  line-height: 1.5;
  letter-spacing: .03em;
  color: var(--sky-title);
}

.page-contact .ct-side-text {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--sky-muted);
}

@media (min-width: 900px) {
  .page-contact .ct-hero-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(248px, .85fr);
    align-items: end;
  }
}

/* ---------- 主体错位布局 ---------- */
.page-contact .ct-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ct-gap);
  padding-bottom: clamp(48px, 9vw, 110px);
}

.page-contact .ct-index-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--sky-muted);
}

.page-contact .ct-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}

.page-contact .ct-index-link {
  display: inline-block;
  padding: 4px 0;
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--sky-text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}

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

@media (min-width: 980px) {
  .page-contact .ct-layout {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: clamp(30px, 5vw, 70px);
    align-items: start;
  }

  .page-contact .ct-index {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

  .page-contact .ct-index-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    counter-reset: ct-idx;
  }

  .page-contact .ct-index-link {
    display: block;
    padding: 10px 0 10px 32px;
    position: relative;
    border-bottom: 1px solid var(--sky-hair);
  }

  .page-contact .ct-index-link::before {
    counter-increment: ct-idx;
    content: "0" counter(ct-idx);
    position: absolute;
    left: 0;
    top: 11px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .08em;
    color: var(--sky-nebula-lift);
  }
}

/* ---------- 章节 ---------- */
.page-contact .ct-chapter {
  margin-top: clamp(34px, 5vw, 58px);
  padding-top: clamp(30px, 5vw, 54px);
  border-top: 1px solid var(--sky-hair-strong);
}

.page-contact .ct-flow > .ct-chapter:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-contact .ct-chapter-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--sky-pulse);
}

.page-contact .ct-chapter-title {
  margin: 12px 0 0;
}

.page-contact .ct-chapter-lede {
  margin-top: 14px;
  max-width: 34em;
}

/* ---------- 三种联系方式 ---------- */
.page-contact .ct-channels {
  position: relative;
  margin-top: 26px;
  padding: clamp(20px, 3.2vw, 34px);
  overflow: hidden;
  border: 1px solid var(--sky-hair-strong);
  background: linear-gradient(160deg, rgba(16, 27, 54, .92), rgba(10, 18, 38, .96));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-contact .ct-starfield {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
  pointer-events: none;
}

.page-contact .ct-channels-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .ct-channel {
  --ct-cut: 14px;
  padding: 20px 18px 20px;
  background: rgba(5, 10, 22, .74);
  border: 1px solid var(--sky-hair-strong);
  clip-path: polygon(var(--ct-cut) 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%, 0 var(--ct-cut));
}

.page-contact .ct-channel-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--sky-nebula-lift);
}

.page-contact .ct-channel-value {
  margin: 10px 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(13px, 3.2vw, 16px);
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--sky-title);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .ct-channel-value--addr {
  font-size: 14px;
  line-height: 1.75;
  letter-spacing: .01em;
}

.page-contact .ct-channel-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--sky-muted);
}

.page-contact .ct-channels-foot {
  position: relative;
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--sky-hair);
}

@media (min-width: 760px) {
  .page-contact .ct-channels-inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

/* ---------- 咨询范围 ---------- */
.page-contact .ct-topics {
  margin-top: 24px;
  border-top: 1px solid var(--sky-hair-strong);
}

.page-contact .ct-topic {
  border-bottom: 1px solid var(--sky-hair-strong);
}

.page-contact .ct-topic > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: .05em;
  color: var(--sky-title);
  transition: color .18s ease;
}

.page-contact .ct-topic > summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-topic > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--sky-pulse);
  transition: transform .2s ease;
}

.page-contact .ct-topic[open] > summary::after {
  transform: rotate(45deg);
}

.page-contact .ct-topic > summary:hover,
.page-contact .ct-topic > summary:focus-visible {
  color: var(--sky-pulse);
}

.page-contact .ct-topic-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--sky-nebula-lift);
}

.page-contact .ct-topic-body {
  padding: 0 0 22px 2px;
}

.page-contact .ct-topic-body p {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sky-text);
}

.page-contact .ct-topic-hint {
  margin-top: 12px !important;
  font-family: var(--font-mono);
  font-size: 12px !important;
  letter-spacing: .05em;
  color: var(--sky-cyan) !important;
}

/* ---------- 内容共建 ---------- */
.page-contact .ct-build-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  margin-top: 26px;
}

.page-contact .ct-build-title {
  margin: 0 0 16px;
}

.page-contact .ct-build-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .ct-build-list li {
  padding-left: 16px;
  border-left: 1px solid var(--sky-line-violet);
}

.page-contact .ct-build-key {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--sky-nebula-lift);
}

.page-contact .ct-build-list p {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sky-text);
}

.page-contact .ct-topic-chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .ct-build-note {
  margin-top: 16px;
  max-width: 32em;
}

.page-contact .ct-steps {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--sky-hair);
}

.page-contact .ct-steps-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--sky-muted);
}

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

.page-contact .ct-steps-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
}

.page-contact .ct-step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--sky-pulse);
}

.page-contact .ct-step-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--sky-text);
}

@media (min-width: 900px) {
  .page-contact .ct-build-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

  .page-contact .ct-build-col--topics {
    padding-left: clamp(20px, 3vw, 40px);
    border-left: 1px solid var(--sky-hair);
  }
}

/* ---------- 数据订阅 ---------- */
.page-contact .ct-sub-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 26px;
}

.page-contact .ct-sub-card {
  --ct-cut: 14px;
  padding: 22px 20px;
  background: var(--sky-panel);
  border: 1px solid var(--sky-hair);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%);
}

.page-contact .ct-sub-title {
  margin: 0 0 12px;
}

.page-contact .ct-sub-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--sky-text);
}

@media (min-width: 860px) {
  .page-contact .ct-sub-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 运营中心与时段 ---------- */
.page-contact .ct-hours {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 44px);
  margin-top: 26px;
}

.page-contact .ct-hours-media {
  margin: 0;
}

.page-contact .ct-hours-media img {
  display: block;
  width: 100%;
  border: 1px solid var(--sky-hair);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-contact .ct-hours-media figcaption {
  margin-top: 12px;
}

.page-contact .ct-hours-body p {
  margin: 0 0 16px;
  max-width: 34em;
}

.page-contact .ct-hours-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--sky-hair);
}

.page-contact .ct-hours-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--sky-hair);
}

.page-contact .ct-hours-key {
  flex: 0 0 auto;
  min-width: 6.5em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--sky-muted);
}

.page-contact .ct-hours-val {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: .03em;
  color: var(--sky-title);
}

@media (min-width: 840px) {
  .page-contact .ct-hours {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    align-items: start;
  }
}

/* ---------- 相关栏目 ---------- */
.page-contact .ct-next-lede {
  margin-top: 14px;
  max-width: 34em;
}

.page-contact .ct-next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 24px;
}

.page-contact .ct-next-card {
  display: block;
  padding: 20px 20px 22px;
  text-decoration: none;
  background: rgba(16, 27, 54, .6);
  border: 1px solid var(--sky-hair);
  border-left: 2px solid var(--sky-nebula);
  transition: border-color .2s ease, background-color .2s ease, transform .2s ease;
}

.page-contact .ct-next-card:hover,
.page-contact .ct-next-card:focus-visible {
  border-left-color: var(--sky-pulse);
  background: rgba(75, 58, 140, .22);
  transform: translateX(3px);
}

.page-contact .ct-next-key {
  display: block;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--sky-title);
}

.page-contact .ct-next-desc {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--sky-muted);
}

@media (min-width: 680px) {
  .page-contact .ct-next-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-next-card,
  .page-contact .ct-topic > summary,
  .page-contact .ct-topic > summary::after,
  .page-contact .ct-index-link {
    transition: none;
  }

  .page-contact .ct-next-card:hover,
  .page-contact .ct-next-card:focus-visible {
    transform: none;
  }
}