.page-contact {
  --ct-gap: clamp(20px, 3vw, 36px);
  --ct-card: var(--sky-850);
  padding-block: 20px 88px;
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  display: grid;
  gap: var(--ct-gap);
  padding-bottom: clamp(28px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-hero__body {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .ct-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 8.4vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.page-contact .ct-hero__lead {
  margin: 0;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-contact .ct-hero__facts {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .ct-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-dim);
}

.page-contact .ct-hero__facts .mono {
  font-size: 16px;
  color: var(--mint);
  letter-spacing: 0.02em;
}

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

/* ---------- 主体两栏 ---------- */
.page-contact .ct-body {
  display: grid;
  gap: var(--ct-gap);
  padding-top: clamp(28px, 4vw, 52px);
}

.page-contact .ct-rail {
  display: flex;
  gap: 6px;
  position: static;
  overflow-x: auto;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}

.page-contact .ct-rail .rail__item {
  flex: 0 0 auto;
  white-space: nowrap;
  font-size: 13px;
}

.page-contact .ct-flow {
  display: grid;
  min-width: 0;
}

.page-contact .ct-section {
  padding-block: clamp(30px, 4.5vw, 58px);
  border-top: 1px solid var(--line);
}

.page-contact .ct-section--last {
  padding-bottom: 0;
}

/* ---------- 咨询分类 ---------- */
.page-contact .ct-topics {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .ct-topic {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 22px 20px 20px;
  background: var(--ct-card);
  transition: background 240ms var(--ease);
}

.page-contact .ct-topic:hover {
  background: var(--panel);
}

.page-contact .ct-topic__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 21px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  font-weight: 700;
}

.page-contact .ct-topic__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-contact .ct-topic__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mint-deep);
}

/* ---------- 联系渠道 ---------- */
.page-contact .ct-channels {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.page-contact .ct-channel {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--line);
  background: linear-gradient(180deg, rgba(36, 224, 176, 0.05), rgba(6, 20, 40, 0) 62%), var(--ct-card);
}

.page-contact .ct-channel--primary {
  border-top-color: var(--mint);
}

.page-contact .ct-channel__name {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-contact .ct-channel__value {
  margin: 0;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--mint);
  word-break: break-all;
}

.page-contact .ct-channel__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-contact .ct-channel__meta {
  margin: 4px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
}

/* ---------- 工单流程 ---------- */
.page-contact .ct-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .ct-steps > li {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 20px;
  background: var(--ct-card);
}

.page-contact .ct-steps__num {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mint);
}

.page-contact .ct-steps h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
}

.page-contact .ct-steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-dim);
}

.page-contact .ct-flow__media {
  margin: 26px 0 0;
}

/* ---------- 办公信息 ---------- */
.page-contact .ct-office {
  margin: 26px 0 0;
  border-top: 1px solid var(--line);
}

.page-contact .ct-office__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-office dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}

.page-contact .ct-office dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-contact .ct-office dd.mono {
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--mint);
  word-break: break-all;
}

.page-contact .ct-office__note {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-dim);
}

/* ---------- 合作方向 ---------- */
.page-contact .ct-partners {
  display: grid;
  gap: 24px;
  margin-top: 26px;
}

.page-contact .ct-partners__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .ct-partners__lead a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid var(--mint-mid);
}

.page-contact .ct-partners__lead a:hover {
  border-bottom-color: var(--mint);
}

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

.page-contact .ct-partners__list li {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-contact .ct-partners__list h3 {
  margin: 0 0 5px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.page-contact .ct-partners__list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-dim);
}

/* ---------- 收尾导航 ---------- */
.page-contact .ct-tail {
  margin-top: clamp(30px, 4.5vw, 56px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-contact .ct-tail p {
  margin: 0;
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-dim);
}

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

.page-contact .ct-tail a:hover {
  border-bottom-color: var(--mint);
}

.page-contact a:focus-visible,
.page-contact .has-focus-ring:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .ct-office__row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-contact .ct-topics,
  .page-contact .ct-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .ct-partners {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 40px;
    align-items: start;
  }

  .page-contact .ct-partners__list li:first-child {
    border-top: 0;
    padding-top: 0;
  }
}

@media (min-width: 900px) {
  .page-contact .ct-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-contact .ct-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: end;
  }

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

  .page-contact .ct-body {
    grid-template-columns: 176px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-contact .ct-rail {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
    border-bottom: 0;
    align-content: start;
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-contact .ct-rail .rail__item {
    white-space: normal;
  }

  .page-contact .ct-section:first-child {
    padding-top: 0;
    border-top: 0;
  }
}