.page-contact {
  --ct-border: 2px solid var(--kt-line);
  --ct-soft: rgba(41, 240, 208, .07);
  --ct-soft-lg: rgba(41, 240, 208, .12);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  padding-top: clamp(18px, 4vw, 44px);
}

.page-contact .ct-hero__inner {
  display: grid;
  gap: clamp(22px, 3.4vw, 38px);
  align-items: end;
}

.page-contact .ct-hero__text {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: clamp(1rem, 1.55vw, 1.125rem);
  line-height: 1.78;
  color: var(--kt-ice);
  opacity: .88;
}

.page-contact .ct-sla {
  border: var(--ct-border);
  background: var(--kt-board);
  padding: 18px 18px 20px;
  box-shadow: var(--kt-hard);
}

.page-contact .ct-sla__num {
  margin: 8px 0 6px;
  font-size: clamp(2rem, 5vw, 2.7rem);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--kt-cyan);
  line-height: 1;
}

.page-contact .ct-sla__txt {
  margin: 0;
  font-size: .9rem;
  line-height: 1.72;
  color: var(--kt-mute);
}

.page-contact .ct-hero__quick {
  margin-top: clamp(20px, 3vw, 30px);
  display: grid;
  gap: 1px;
  background: var(--kt-line);
  border: var(--ct-border);
}

.page-contact .ct-quick__item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
  background: var(--kt-board);
  color: var(--kt-ice);
  font-size: .95rem;
  text-decoration: none;
  transition: background .16s ease, color .16s ease;
}

.page-contact .ct-quick__item:hover {
  background: var(--ct-soft-lg);
  color: var(--kt-cyan);
}

.page-contact .ct-quick__item:focus-visible {
  outline: 2px solid var(--kt-orange);
  outline-offset: -3px;
}

.page-contact .ct-quick__idx {
  font-family: var(--kt-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--kt-orange-soft);
}

/* ---------- 渠道 + 清单 分栏 ---------- */
.page-contact .ct-split {
  display: grid;
  gap: clamp(24px, 3.6vw, 42px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .ct-stack {
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
}

.page-contact .ct-channel {
  position: relative;
  border: var(--ct-border);
  background: var(--kt-board);
  padding: 26px 20px 20px;
  box-shadow: var(--kt-hard);
  transition: border-color .16s ease, transform .16s ease;
}

.page-contact .ct-channel:hover,
.page-contact .ct-channel:focus-within {
  border-color: var(--kt-cyan);
  transform: translateY(-2px);
}

.page-contact .ct-channel__idx {
  position: absolute;
  top: -11px;
  left: 18px;
  padding: 3px 9px;
  background: var(--kt-orange);
  color: var(--kt-carbon);
  font-family: var(--kt-font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
}

.page-contact .ct-channel__title {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: .02em;
  color: var(--kt-ice);
}

.page-contact .ct-channel__value {
  display: block;
  margin: 10px 0 0;
  font-family: var(--kt-font-mono);
  font-size: clamp(1rem, 2.4vw, 1.28rem);
  line-height: 1.4;
  color: var(--kt-cyan);
  word-break: break-all;
}

.page-contact .ct-channel__value--plain {
  font-size: clamp(.98rem, 1.9vw, 1.1rem);
  color: var(--kt-ice);
  word-break: break-word;
}

.page-contact .ct-channel__body {
  margin: 12px 0 0;
  font-size: .94rem;
  line-height: 1.78;
  color: var(--kt-ice);
  opacity: .86;
}

.page-contact .ct-channel__meta {
  margin: 14px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--kt-line);
  font-size: .82rem;
  line-height: 1.65;
  color: var(--kt-mute);
}

/* ---------- 反馈清单 ---------- */
.page-contact .ct-checkwrap {
  border: var(--ct-border);
  background: var(--kt-board);
  box-shadow: var(--kt-hard);
  align-self: start;
}

.page-contact .ct-checklist__head {
  padding: 16px 18px;
  background: var(--kt-carbon);
  border-bottom: var(--ct-border);
}

.page-contact .ct-checklist__head h3 {
  margin: 0;
  font-size: 1rem;
  color: var(--kt-ice);
}

.page-contact .ct-checklist__head p {
  margin: 6px 0 0;
  font-size: .84rem;
  color: var(--kt-mute);
}

.page-contact .ct-check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--kt-line);
  cursor: pointer;
  transition: background .16s ease, box-shadow .16s ease;
}

.page-contact .ct-check:hover {
  background: var(--ct-soft);
  box-shadow: inset 3px 0 0 var(--kt-cyan);
}

.page-contact .ct-check:focus-within {
  outline: 2px solid var(--kt-orange);
  outline-offset: -3px;
}

.page-contact .ct-check__input {
  flex: none;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  accent-color: var(--kt-cyan);
  cursor: pointer;
}

.page-contact .ct-check__label {
  font-size: .94rem;
  line-height: 1.62;
  color: var(--kt-ice);
}

.page-contact .ct-check__label em {
  display: block;
  margin-top: 3px;
  font-style: normal;
  font-size: .8rem;
  line-height: 1.6;
  color: var(--kt-mute);
}

.page-contact .ct-meter {
  display: grid;
  gap: 10px;
  padding: 16px 18px 18px;
  background: var(--kt-void);
  border-top: var(--ct-border);
}

.page-contact .ct-meter__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-contact .ct-meter__title {
  font-family: var(--kt-font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--kt-mute);
}

.page-contact .ct-meter__num {
  font-size: .95rem;
  font-weight: 700;
  color: var(--kt-cyan);
}

.page-contact .ct-meter__num::after {
  content: "0 / 5";
}

.page-contact .ct-meter__track {
  height: 8px;
  background: var(--kt-line);
  overflow: hidden;
}

.page-contact .ct-meter__fill {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--kt-cyan-deep), var(--kt-cyan));
  transition: width .28s ease;
}

.page-contact .ct-checkwrap:has(#fb1:checked) .ct-meter__fill { width: 20%; }
.page-contact .ct-checkwrap:has(#fb1:checked) .ct-meter__num::after { content: "1 / 5"; }

.page-contact .ct-checkwrap:has(#fb1:checked):has(#fb2:checked) .ct-meter__fill { width: 40%; }
.page-contact .ct-checkwrap:has(#fb1:checked):has(#fb2:checked) .ct-meter__num::after { content: "2 / 5"; }

.page-contact .ct-checkwrap:has(#fb1:checked):has(#fb2:checked):has(#fb3:checked) .ct-meter__fill { width: 60%; }
.page-contact .ct-checkwrap:has(#fb1:checked):has(#fb2:checked):has(#fb3:checked) .ct-meter__num::after { content: "3 / 5"; }

.page-contact .ct-checkwrap:has(#fb1:checked):has(#fb2:checked):has(#fb3:checked):has(#fb4:checked) .ct-meter__fill { width: 80%; }
.page-contact .ct-checkwrap:has(#fb1:checked):has(#fb2:checked):has(#fb3:checked):has(#fb4:checked) .ct-meter__num::after { content: "4 / 5"; }

.page-contact .ct-checkwrap:has(#fb1:checked):has(#fb2:checked):has(#fb3:checked):has(#fb4:checked):has(#fb5:checked) .ct-meter__fill { width: 100%; }
.page-contact .ct-checkwrap:has(#fb1:checked):has(#fb2:checked):has(#fb3:checked):has(#fb4:checked):has(#fb5:checked) .ct-meter__num::after { content: "5 / 5"; }

/* ---------- 通栏氛围带 ---------- */
.page-contact .ct-band {
  position: relative;
  margin: clamp(38px, 6vw, 78px) 0;
  border-top: var(--ct-border);
  border-bottom: var(--ct-border);
  background: var(--kt-carbon);
  overflow: hidden;
}

.page-contact .ct-band img {
  display: block;
  width: 100%;
  height: clamp(170px, 30vw, 340px);
  max-width: 100%;
  object-fit: cover;
  opacity: .82;
}

.page-contact .ct-band__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  background: var(--kt-carbon);
  border-top: var(--ct-border);
  border-right: var(--ct-border);
  font-family: var(--kt-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--kt-mute);
}

/* ---------- 分流表 ---------- */
.page-contact .ct-figure {
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  border: var(--ct-border);
  background: var(--kt-board);
}

.page-contact .ct-figure .kt-figure__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .ct-figure .kt-figure__cap {
  border-top: var(--ct-border);
  padding: 10px 16px;
  font-size: .82rem;
  color: var(--kt-mute);
}

.page-contact .ct-tablewrap {
  margin-top: clamp(18px, 2.6vw, 28px);
  border: var(--ct-border);
  background: var(--kt-board);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-contact .ct-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

.page-contact .ct-table__caption {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--kt-font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--kt-mute);
  background: var(--kt-carbon);
  border-bottom: var(--ct-border);
}

.page-contact .ct-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--kt-mute);
  background: var(--kt-carbon);
  border-bottom: var(--ct-border);
}

.page-contact .ct-table td {
  padding: 15px 16px;
  vertical-align: top;
  font-size: .92rem;
  line-height: 1.68;
  color: var(--kt-ice);
  border-bottom: 1px solid var(--kt-line);
}

.page-contact .ct-table tbody tr {
  transition: background .16s ease;
}

.page-contact .ct-table tbody tr:hover {
  background: var(--ct-soft);
}

.page-contact .ct-table tbody tr:hover td:first-child {
  box-shadow: inset 3px 0 0 var(--kt-orange);
}

.page-contact .ct-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-contact .ct-table__key {
  font-weight: 600;
  color: var(--kt-ice);
}

.page-contact .ct-table__key span {
  display: block;
  margin-top: 4px;
  font-weight: 400;
  font-size: .8rem;
  color: var(--kt-mute);
}

.page-contact .ct-cell-mono {
  color: var(--kt-cyan);
  font-size: .9rem;
}

.page-contact .ct-table__foot {
  margin: 14px 0 0;
  font-size: .86rem;
  line-height: 1.72;
  color: var(--kt-mute);
}

.page-contact .ct-table__foot a {
  color: var(--kt-orange-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .ct-table__foot a:hover {
  color: var(--kt-orange);
}

/* ---------- 合作共建 ---------- */
.page-contact .ct-coop {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .ct-coop__box {
  border: var(--ct-border);
  background: var(--kt-board);
  padding: clamp(18px, 2.4vw, 24px);
  transition: border-color .16s ease;
}

.page-contact .ct-coop__box:hover {
  border-color: var(--kt-cyan);
}

.page-contact .ct-coop__box h3 {
  margin: 0 0 16px;
  font-size: 1rem;
  letter-spacing: .02em;
  color: var(--kt-ice);
}

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

.page-contact .ct-coop__list li {
  position: relative;
  padding-left: 20px;
  font-size: .94rem;
  line-height: 1.76;
  color: var(--kt-ice);
  opacity: .9;
}

.page-contact .ct-coop__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 8px;
  height: 8px;
  background: var(--kt-cyan);
  box-shadow: 0 0 0 2px rgba(41, 240, 208, .2);
}

.page-contact .ct-coop__list strong {
  color: var(--kt-orange-soft);
  font-weight: 600;
}

.page-contact .ct-coop__tail {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--kt-line);
  font-size: .86rem;
  line-height: 1.76;
  color: var(--kt-mute);
}

/* ---------- 收束 ---------- */
.page-contact .ct-close {
  display: grid;
  gap: 20px;
  padding: clamp(22px, 3vw, 34px);
  border: var(--ct-border);
  background:
    linear-gradient(140deg, rgba(41, 240, 208, .12), rgba(255, 107, 44, .07) 58%, transparent 82%),
    var(--kt-board);
  box-shadow: var(--kt-hard-lg);
}

.page-contact .ct-close__title {
  margin: 8px 0 0;
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  line-height: 1.3;
  color: var(--kt-ice);
  letter-spacing: -.01em;
}

.page-contact .ct-close__text {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: .94rem;
  line-height: 1.78;
  color: var(--kt-ice);
  opacity: .85;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .ct-hero__quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-contact .ct-coop {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-contact .ct-close {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 34px;
  }
}

@media (min-width: 1000px) {
  .page-contact .ct-hero__inner {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }

  .page-contact .ct-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}
<<<END>>>