/* ===== 咨询通道 / contact ===== */
.page-contact {
  --ct-line: rgba(139, 147, 176, .22);
  --ct-line-strong: rgba(139, 147, 176, .4);
  --ct-block-y: 52px;
  color: var(--xb-paper);
  background: var(--xb-indigo);
}

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

.page-contact .ct-block:first-of-type {
  border-top: 0;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-topstrip {
  display: block;
  width: 100%;
}

.page-contact .ct-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--xb-header-h) + 56px) 0 56px;
  background: var(--xb-indigo);
}

.page-contact .ct-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.5) brightness(.6);
  opacity: .55;
}

.page-contact .ct-hero__veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  display: block;
  background:
    linear-gradient(180deg, rgba(11, 18, 48, .74) 0%, rgba(11, 18, 48, .93) 68%, var(--xb-indigo) 100%),
    repeating-linear-gradient(90deg, var(--xb-grid-line) 0 1px, transparent 1px 64px);
}

.page-contact .ct-hero__inner {
  position: relative;
}

.page-contact .ct-hero__copy {
  max-width: 760px;
  margin-top: 26px;
}

.page-contact .ct-hero__copy h1 {
  margin: 0;
  font-family: var(--xb-font-head);
  font-weight: 800;
  font-size: clamp(30px, 6.4vw, 60px);
  line-height: 1.08;
  letter-spacing: -.012em;
}

.page-contact .ct-hero__lead {
  margin: 20px 0 0;
  max-width: 640px;
  color: var(--xb-mist);
  font-size: 16px;
  line-height: 1.85;
}

/* ---------- 通用标题组 ---------- */
.page-contact .ct-eyebrow {
  margin: 0 0 10px;
  font-family: var(--xb-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--xb-mist);
}

.page-contact .ct-head {
  max-width: 640px;
  margin-bottom: 32px;
}

.page-contact .ct-head h2 {
  margin: 0;
  font-family: var(--xb-font-head);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 34px);
  line-height: 1.18;
  letter-spacing: -.01em;
}

.page-contact .ct-head p {
  margin: 12px 0 0;
  color: var(--xb-mist);
  font-size: 15px;
  line-height: 1.85;
}

/* ---------- 三条联系通道 ---------- */
.page-contact .ct-channels__grid {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--ct-line);
  background: var(--xb-navy);
}

.page-contact .ct-channel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px 26px;
}

.page-contact .ct-channel + .ct-channel {
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-channel__label {
  margin: 0;
  font-family: var(--xb-font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--xb-amber);
}

.page-contact .ct-channel__value {
  margin: 0;
  font-size: 17px;
  line-height: 1.55;
  font-weight: 600;
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

.page-contact .ct-channel__value--num {
  font-family: var(--xb-font-mono);
  font-size: 19px;
  letter-spacing: .02em;
}

.page-contact .ct-channel__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--xb-mist);
}

/* ---------- 常见诉求 ---------- */
.page-contact .ct-scenes {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .ct-scene {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 6px 12px;
  padding: 20px 0;
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-scene:last-child {
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-scene__idx {
  padding-top: 4px;
  font-family: var(--xb-font-mono);
  font-size: 12.5px;
  color: var(--xb-amber);
}

.page-contact .ct-scene__title {
  grid-column: 2;
  margin: 0;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.55;
}

.page-contact .ct-scene__desc {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--xb-mist);
}

.page-contact .ct-scene__desc a,
.page-contact .ct-minor a {
  color: var(--xb-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 224, 192, .4);
}

.page-contact .ct-scene__desc a:hover,
.page-contact .ct-minor a:hover {
  border-bottom-color: var(--xb-cyan);
}

/* ---------- 合作方向 ---------- */
.page-contact .ct-coop__wrap {
  display: grid;
  gap: 34px;
}

.page-contact .ct-coop__list {
  display: grid;
}

.page-contact .ct-coop__item {
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-coop__item:last-of-type {
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-coop__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
}

.page-contact .ct-coop__summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-coop__summary:focus-visible {
  outline: 1px solid var(--xb-amber);
  outline-offset: 3px;
}

.page-contact .ct-coop__num {
  flex: 0 0 auto;
  font-family: var(--xb-font-head);
  font-weight: 800;
  font-size: 40px;
  line-height: .9;
  letter-spacing: -.02em;
  color: var(--xb-mist);
}

.page-contact .ct-coop__head {
  flex: 1 1 auto;
  min-width: 0;
  display: block;
}

.page-contact .ct-coop__title {
  display: block;
  margin: 0;
  font-size: 17.5px;
  font-weight: 600;
  line-height: 1.4;
}

.page-contact .ct-coop__meta {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--xb-mist);
}

.page-contact .ct-coop__sign {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
}

.page-contact .ct-coop__sign::before,
.page-contact .ct-coop__sign::after {
  content: "";
  position: absolute;
  background: var(--xb-mist);
  transition: transform .24s var(--xb-ease);
}

.page-contact .ct-coop__sign::before {
  left: 0;
  top: 6.5px;
  width: 14px;
  height: 1px;
}

.page-contact .ct-coop__sign::after {
  top: 0;
  left: 6.5px;
  width: 1px;
  height: 14px;
}

.page-contact .ct-coop__item[open] .ct-coop__sign::after {
  transform: scaleY(0);
}

.page-contact .ct-coop__body {
  padding: 0 0 24px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--xb-mist);
}

.page-contact .ct-coop__dl {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 8px 14px;
  margin: 0;
  padding-left: 14px;
  border-left: 1px solid var(--ct-line-strong);
}

.page-contact .ct-coop__dl dt {
  font-family: var(--xb-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--xb-paper);
  padding-top: 2px;
}

.page-contact .ct-coop__dl dd {
  margin: 0;
  min-width: 0;
}

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

.page-contact .ct-coop__figure {
  margin: 0;
  border: 1px solid var(--ct-line);
  background: var(--xb-navy);
}

.page-contact .ct-coop__figure img {
  display: block;
  width: 100%;
  height: 220px;
  object-fit: cover;
  filter: saturate(.45) brightness(.78);
}

.page-contact .ct-coop__figure figcaption {
  padding: 12px 16px 14px;
  border-top: 1px solid var(--ct-line);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--xb-mist);
}

/* ---------- 准备清单 ---------- */
.page-contact .ct-prep__grid {
  display: grid;
  gap: 28px;
}

.page-contact .ct-prep__intro h2 {
  margin: 0;
  font-family: var(--xb-font-head);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 34px);
  line-height: 1.18;
  letter-spacing: -.01em;
}

.page-contact .ct-prep__intro p:last-child {
  margin: 12px 0 0;
  color: var(--xb-mist);
  font-size: 15px;
  line-height: 1.85;
}

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

.page-contact .ct-checklist__item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 14px;
  padding: 15px 0;
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-checklist__item:last-child {
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-checklist__box {
  display: block;
  width: 15px;
  height: 15px;
  margin-top: 5px;
  border: 1px solid var(--xb-amber);
  background: transparent;
  transition: background-color .2s var(--xb-ease);
}

.page-contact .ct-checklist__item:hover .ct-checklist__box {
  background: rgba(232, 163, 61, .28);
}

.page-contact .ct-checklist__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--xb-mist);
}

.page-contact .ct-checklist__text strong {
  display: block;
  margin-bottom: 3px;
  font-size: 15px;
  font-weight: 600;
  color: var(--xb-paper);
}

/* ---------- 响应节奏 ---------- */
.page-contact .ct-sla__rows {
  display: grid;
}

.page-contact .ct-sla__row {
  display: grid;
  gap: 5px;
  padding: 18px 0;
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-sla__row:last-child {
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-sla__label {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.page-contact .ct-sla__value {
  margin: 0;
  font-family: var(--xb-font-mono);
  font-size: 20px;
  letter-spacing: .01em;
  color: var(--xb-amber);
  font-variant-numeric: tabular-nums;
}

.page-contact .ct-sla__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--xb-mist);
}

.page-contact .ct-minor {
  margin: 26px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--xb-mist);
}

/* ---------- 备案信息带 ---------- */
.page-contact .ct-record {
  border-top: 1px solid var(--ct-line-strong);
  background: var(--xb-navy);
}

.page-contact .ct-record__inner {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 20px;
  padding-bottom: 20px;
}

.page-contact .ct-record__inner p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--xb-mist);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-contact .ct-scene {
    grid-template-columns: 40px minmax(0, 1fr);
    padding: 24px 0;
  }

  .page-contact .ct-sla__row {
    grid-template-columns: 190px 170px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
    padding: 20px 0;
  }

  .page-contact .ct-record__inner {
    flex-direction: row;
    justify-content: flex-end;
    gap: 28px;
    text-align: right;
  }
}

@media (min-width: 880px) {
  .page-contact {
    --ct-block-y: 84px;
  }

  .page-contact .ct-hero {
    padding: calc(var(--xb-header-h) + 84px) 0 84px;
  }

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

  .page-contact .ct-channel {
    padding: 32px 28px 36px;
  }

  .page-contact .ct-channel + .ct-channel {
    border-top: 0;
    border-left: 1px solid var(--ct-line);
  }

  .page-contact .ct-scene {
    grid-template-columns: 48px minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 8px 28px;
    padding: 26px 0;
  }

  .page-contact .ct-scene__title {
    grid-column: 2;
  }

  .page-contact .ct-scene__desc {
    grid-column: 3;
    font-size: 14px;
  }

  .page-contact .ct-prep__grid {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .ct-coop__summary {
    gap: 22px;
    padding: 24px 0;
  }

  .page-contact .ct-coop__num {
    font-size: 52px;
  }

  .page-contact .ct-coop__dl {
    grid-template-columns: 86px minmax(0, 1fr);
    padding-left: 20px;
  }
}

@media (min-width: 1040px) {
  .page-contact .ct-coop__wrap {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 56px;
    align-items: start;
  }

  .page-contact .ct-coop__figure img {
    height: 420px;
  }

  .page-contact .ct-coop__aside {
    position: sticky;
    top: calc(var(--xb-header-h) + 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-coop__sign::before,
  .page-contact .ct-coop__sign::after,
  .page-contact .ct-checklist__box {
    transition: none;
  }
}