.page-contact {
  --ct-rail-w: 326px;
  --ct-gap: clamp(24px, 3.4vw, 56px);
  --ct-pad: clamp(18px, 2.6vw, 32px);
  --ct-line: 1px solid var(--graphite);
}

/* ---------- 面包屑 ---------- */
.page-contact .crumbs {
  padding-top: clamp(16px, 2.4vw, 26px);
}

/* ---------- 首屏框景 ---------- */
.page-contact .ct-head {
  padding: clamp(18px, 3vw, 34px) 0 clamp(28px, 4.4vw, 58px);
}

.page-contact .ct-head-frame {
  position: relative;
  border: 2px solid var(--graphite);
  background:
    linear-gradient(180deg, rgba(20, 24, 26, .92), rgba(11, 13, 14, .96));
  padding: clamp(22px, 3.6vw, 48px);
  box-shadow: var(--shadow-hard);
}

.page-contact .ct-corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--cinnabar);
}

.page-contact .ct-corner--tl {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}

.page-contact .ct-corner--br {
  right: -2px;
  bottom: -2px;
  border-left: 0;
  border-top: 0;
}

.page-contact .ct-head-grid {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}

.page-contact .ct-head-copy h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .ct-head-copy .lead {
  margin-top: clamp(14px, 1.8vw, 22px);
  max-width: 62ch;
}

.page-contact .ct-head-copy .btn-row {
  margin-top: clamp(18px, 2.4vw, 28px);
}

.page-contact .ct-head-side {
  border-top: var(--ct-line);
  padding-top: 16px;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-contact .ct-side-line {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
}

.page-contact .ct-side-k {
  color: var(--text);
  min-width: 5.6em;
}

/* ---------- 左右分屏 ---------- */
.page-contact .ct-layout {
  display: grid;
  gap: var(--ct-gap);
  padding-bottom: clamp(46px, 6vw, 96px);
}

.page-contact .ct-rail-inner {
  border: 2px solid var(--graphite);
  background: var(--ink-800);
  padding: var(--ct-pad);
  box-shadow: var(--shadow-hard);
}

.page-contact .ct-rail-title {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--signal);
}

.page-contact .ct-rail-item {
  padding: 16px 0;
  border-top: var(--ct-line);
}

.page-contact .ct-rail-item:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-contact .ct-rail-kicker {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-contact .ct-rail-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .ct-rail-value--mail {
  color: var(--signal);
}

.page-contact .ct-rail-value--addr {
  font-size: 14px;
  color: var(--text);
}

.page-contact .ct-rail-note {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .ct-rail-foot {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: var(--ct-line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 右侧内容流 ---------- */
.page-contact .ct-stream {
  display: grid;
  gap: clamp(34px, 4.6vw, 68px);
}

.page-contact .ct-block {
  border-top: 2px solid var(--graphite);
  padding-top: clamp(20px, 3vw, 34px);
}

.page-contact .ct-block .prose {
  margin-top: 16px;
}

.page-contact .ct-block-foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 渠道 ---------- */
.page-contact .ct-channels {
  margin-top: 22px;
  display: grid;
  gap: 1px;
  background: var(--graphite);
  border: 1px solid var(--graphite);
}

.page-contact .ct-channel {
  background: var(--ink-800);
  padding: var(--ct-pad);
  transition: background .22s ease;
}

.page-contact .ct-channel:hover {
  background: var(--ink-700);
}

.page-contact .ct-channel-top {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}

.page-contact .ct-channel-idx {
  font-size: 13px;
  color: var(--cinnabar-soft);
  border: 1px solid var(--cinnabar);
  padding: 2px 7px;
  line-height: 1.4;
}

.page-contact .ct-channel h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 800;
  color: var(--paper);
}

.page-contact .ct-channel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .ct-channel-meta {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 受理时段 ---------- */
.page-contact .ct-hours-list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--ct-line);
}

.page-contact .ct-hours-list li {
  padding: 14px 0;
  border-bottom: var(--ct-line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .ct-hours-k {
  display: inline-block;
  min-width: 7.5em;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber);
  letter-spacing: .04em;
}

.page-contact .ct-hours-figure {
  margin: clamp(22px, 3vw, 34px) 0 0;
}

/* ---------- 材料清单 ---------- */
.page-contact .ct-checklist {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--graphite);
  border: 1px solid var(--graphite);
}

.page-contact .ct-check {
  position: relative;
  background: var(--ink-800);
  transition: background .2s ease;
}

.page-contact .ct-check:hover {
  background: var(--ink-700);
}

.page-contact .ct-check input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .ct-check label {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: var(--ct-pad);
  cursor: pointer;
}

.page-contact .ct-check-box {
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 2px solid var(--graphite);
  background: var(--ink-900);
  position: relative;
  transition: background .18s ease, border-color .18s ease;
}

.page-contact .ct-check input:focus-visible + label .ct-check-box {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-contact .ct-check input:checked + label .ct-check-box {
  background: var(--signal);
  border-color: var(--signal);
}

.page-contact .ct-check input:checked + label .ct-check-box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 1px;
  width: 6px;
  height: 12px;
  border: solid var(--ink-900);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-contact .ct-check-text {
  display: grid;
  gap: 6px;
}

.page-contact .ct-check-text strong {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--paper);
  transition: color .18s ease;
}

.page-contact .ct-check-text span {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .ct-check input:checked + label .ct-check-text strong {
  color: var(--muted);
}

/* ---------- 流程步骤条 ---------- */
.page-contact .ct-flow {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--graphite);
  border: 1px solid var(--graphite);
}

.page-contact .ct-step {
  position: relative;
  background: var(--ink-800);
  padding: calc(var(--ct-pad) + 6px) var(--ct-pad) var(--ct-pad);
  transition: background .22s ease;
}

.page-contact .ct-step:hover {
  background: var(--ink-700);
}

.page-contact .ct-step-mark {
  position: absolute;
  top: -6px;
  left: var(--ct-pad);
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--signal);
  transition: border-color .2s ease, background .2s ease;
}

.page-contact .ct-step:hover .ct-step-mark {
  border-color: var(--cinnabar-soft);
  background: var(--cinnabar);
}

.page-contact .ct-step-idx {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--signal);
}

.page-contact .ct-step h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 800;
  color: var(--paper);
}

.page-contact .ct-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text);
}

.page-contact .ct-step-note {
  margin-top: 12px !important;
  padding-top: 12px;
  border-top: 1px dashed var(--graphite);
  font-size: 13px !important;
  color: var(--muted) !important;
}

/* ---------- 站点信息 ---------- */
.page-contact .ct-site {
  margin-top: 24px;
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-contact .ct-site-list {
  margin: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0;
  border-top: var(--ct-line);
  align-content: start;
}

.page-contact .ct-site-list dt,
.page-contact .ct-site-list dd {
  padding: 13px 0;
  border-bottom: var(--ct-line);
  margin: 0;
}

.page-contact .ct-site-list dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--muted);
  padding-right: 18px;
  white-space: nowrap;
}

.page-contact .ct-site-list dd {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  font-family: var(--font-mono);
}

.page-contact .ct-site-mail {
  color: var(--signal);
  word-break: break-word;
}

/* ---------- 窄屏 ---------- */
@media (max-width: 719px) {
  .page-contact .ct-site-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-contact .ct-site-list dt {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-contact .ct-site-list dd {
    padding-top: 4px;
  }
}

/* ---------- 宽屏：固定左栏 + 宽区流程 ---------- */
@media (min-width: 980px) {
  .page-contact .ct-layout {
    grid-template-columns: var(--ct-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .ct-rail {
    position: sticky;
    top: 108px;
  }

  .page-contact .ct-head-grid {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
    align-items: end;
  }

  .page-contact .ct-head-side {
    border-top: 0;
    border-left: var(--ct-line);
    padding-top: 0;
    padding-left: 24px;
  }

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

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

  .page-contact .ct-site {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }
}

@media (min-width: 1280px) {
  .page-contact .ct-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
<<<END>>>