.page-contact {
  display: block;
  --ct-gap: 18px;
}

/* ---------- HERO ---------- */
.page-contact .ct-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--bd-midnight);
  border-bottom: 1px solid var(--bd-line);
}

.page-contact .ct-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-contact .ct-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .36;
  filter: saturate(.78);
}

.page-contact .ct-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 26, 47, .96) 0%, rgba(10, 26, 47, .74) 48%, rgba(7, 11, 20, .52) 100%),
    linear-gradient(180deg, rgba(7, 11, 20, .45) 0%, rgba(7, 11, 20, .92) 100%);
}

.page-contact .ct-hero__inner {
  position: relative;
  padding-block: clamp(52px, 9vw, 112px) clamp(46px, 7vw, 88px);
}

.page-contact .ct-hero__title {
  margin: 16px 0 0;
  font-size: clamp(44px, 11vw, 92px);
  font-weight: 200;
  line-height: .98;
  letter-spacing: -.025em;
  color: var(--bd-white);
  text-wrap: balance;
}

.page-contact .ct-hero__lead {
  margin: 24px 0 0;
  max-width: 36ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--bd-grey);
}

.page-contact .ct-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-hero__quick a {
  display: inline-block;
  padding: 9px 18px;
  border: 1px solid var(--bd-line);
  border-radius: 999px;
  background: var(--bd-glass);
  color: var(--bd-white);
  font-size: 13px;
  letter-spacing: .08em;
  text-decoration: none;
  transition: border-color .15s var(--bd-ease), color .15s var(--bd-ease), transform .15s var(--bd-ease);
}

.page-contact .ct-hero__quick a:hover,
.page-contact .ct-hero__quick a:focus-visible {
  border-color: var(--bd-cyan);
  color: var(--bd-cyan);
  transform: translateY(-2px);
}

/* ---------- 通用区块标题 ---------- */
.page-contact .ct-head {
  margin-bottom: clamp(28px, 5vw, 48px);
}

.page-contact .ct-head .bd-title {
  margin: 10px 0 0;
  font-size: clamp(27px, 5.2vw, 44px);
  font-weight: 300;
  line-height: 1.14;
  letter-spacing: -.015em;
  color: var(--bd-white);
}

/* ---------- 联络卡 ---------- */
.page-contact .ct-reach {
  padding-block: clamp(56px, 9vw, 96px) clamp(48px, 7vw, 76px);
  background: linear-gradient(180deg, var(--bd-deep) 0%, var(--bd-midnight) 100%);
}

.page-contact .ct-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ct-gap);
}

.page-contact .ct-card {
  position: relative;
  padding: 26px 24px 28px 28px;
  border: 1px solid var(--bd-line);
  border-radius: var(--bd-radius);
  background: var(--bd-glass);
  transition: transform .15s var(--bd-ease), border-color .15s var(--bd-ease), box-shadow .15s var(--bd-ease);
}

.page-contact .ct-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--ct-accent, var(--bd-cyan));
}

.page-contact .ct-card:hover,
.page-contact .ct-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--ct-accent, var(--bd-cyan));
  box-shadow: 0 22px 44px -28px rgba(0, 0, 0, .95);
}

.page-contact .ct-card--mail { --ct-accent: var(--bd-cyan); }
.page-contact .ct-card--phone { --ct-accent: var(--bd-mint); }
.page-contact .ct-card--addr { --ct-accent: var(--bd-orange); }

.page-contact .ct-card__tag {
  display: inline-block;
  font-family: var(--bd-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ct-accent, var(--bd-cyan));
}

.page-contact .ct-card__value {
  margin: 16px 0 0;
  font-family: var(--bd-mono);
  font-size: clamp(18px, 4vw, 25px);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: -.01em;
  color: var(--bd-white);
  overflow-wrap: anywhere;
}

.page-contact .ct-card__desc {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--bd-grey);
}

.page-contact .ct-card__note {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--bd-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--bd-grey);
}

/* ---------- 合作提交 ---------- */
.page-contact .ct-coop {
  padding-block: clamp(56px, 9vw, 96px);
  background: var(--bd-midnight);
  border-top: 1px solid var(--bd-line);
  border-bottom: 1px solid var(--bd-line);
}

.page-contact .ct-coop__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(34px, 6vw, 64px);
}

.page-contact .ct-coop__intro .bd-prose {
  margin: 20px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--bd-grey);
}

.page-contact .ct-coop__fig {
  margin: 30px 0 0;
  max-width: 320px;
}

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

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

.page-contact .ct-item summary {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 22px 2px;
  cursor: pointer;
  list-style: none;
  transition: color .15s var(--bd-ease);
}

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

.page-contact .ct-item summary::after {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  margin-left: auto;
  align-self: center;
  border-right: 2px solid var(--bd-cyan);
  border-bottom: 2px solid var(--bd-cyan);
  transform: rotate(45deg);
  transition: transform .22s var(--bd-ease);
}

.page-contact .ct-item[open] summary::after {
  transform: rotate(225deg);
}

.page-contact .ct-item summary:hover .ct-item__label,
.page-contact .ct-item summary:focus-visible .ct-item__label {
  color: var(--bd-cyan);
}

.page-contact .ct-item__num {
  flex: none;
  font-family: var(--bd-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--bd-grey);
}

.page-contact .ct-item__label {
  font-size: clamp(17px, 3.4vw, 21px);
  font-weight: 500;
  line-height: 1.4;
  color: var(--bd-white);
  transition: color .15s var(--bd-ease);
}

.page-contact .ct-item__body {
  padding: 2px 2px 26px 30px;
  border-left: 2px solid var(--bd-cyan);
  margin-left: 4px;
}

.page-contact .ct-item__body p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--bd-grey);
}

.page-contact .ct-item__need {
  margin-bottom: 0;
  padding: 14px 16px;
  background: rgba(53, 224, 214, .05);
  border: 1px solid rgba(53, 224, 214, .18);
  border-radius: var(--bd-radius);
  color: var(--bd-white) !important;
  font-size: 14px !important;
}

/* ---------- 回复节奏 ---------- */
.page-contact .ct-rhythm {
  padding-block: clamp(56px, 9vw, 96px);
  background: var(--bd-deep);
}

.page-contact .ct-track {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-track__node {
  position: relative;
  padding-left: 30px;
}

.page-contact .ct-track__dot {
  position: absolute;
  left: 0;
  top: 3px;
  width: 15px;
  height: 15px;
  border: 2px solid var(--bd-orange);
  border-radius: 50%;
  background: var(--bd-deep);
}

.page-contact .ct-track__stamp {
  margin: 0 0 8px;
  font-family: var(--bd-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--bd-orange);
}

.page-contact .ct-track__title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 500;
  line-height: 1.45;
  color: var(--bd-white);
}

.page-contact .ct-track__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--bd-grey);
}

/* ---------- 联系前可先看 ---------- */
.page-contact .ct-prep {
  padding-block: clamp(56px, 9vw, 96px);
  background: var(--bd-midnight);
}

.page-contact .ct-prep__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--bd-line);
}

.page-contact .ct-prep__list > li {
  border-bottom: 1px solid var(--bd-line);
}

.page-contact .ct-prep__link {
  display: grid;
  grid-template-columns: 40px 1fr 22px;
  align-items: center;
  gap: 14px;
  padding: 22px 4px;
  color: inherit;
  text-decoration: none;
  transition: background .15s var(--bd-ease), padding-left .15s var(--bd-ease);
}

.page-contact .ct-prep__link:hover,
.page-contact .ct-prep__link:focus-visible {
  background: var(--bd-glass);
  padding-left: 14px;
}

.page-contact .ct-prep__idx {
  font-family: var(--bd-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--bd-cyan);
}

.page-contact .ct-prep__body {
  display: block;
  min-width: 0;
}

.page-contact .ct-prep__body strong {
  display: block;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--bd-white);
}

.page-contact .ct-prep__body span {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--bd-grey);
}

.page-contact .ct-prep__arrow {
  font-size: 16px;
  color: var(--bd-grey);
  transition: color .15s var(--bd-ease), transform .15s var(--bd-ease);
}

.page-contact .ct-prep__link:hover .ct-prep__arrow,
.page-contact .ct-prep__link:focus-visible .ct-prep__arrow {
  color: var(--bd-orange);
  transform: translateX(4px);
}

/* ---------- 底部光点连线 ---------- */
.page-contact .ct-signal {
  padding-block: 18px;
  background: var(--bd-midnight);
  border-top: 1px solid var(--bd-line);
  line-height: 0;
}

.page-contact .ct-signal svg {
  display: block;
  width: 100%;
  height: clamp(96px, 16vw, 190px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .ct-cards {
    grid-template-columns: repeat(12, 1fr);
    gap: 22px;
  }

  .page-contact .ct-card--mail {
    grid-column: 1 / 7;
  }

  .page-contact .ct-card--phone {
    grid-column: 8 / 13;
    margin-top: 44px;
  }

  .page-contact .ct-card--addr {
    grid-column: 3 / 12;
    margin-top: 10px;
  }
}

@media (min-width: 860px) {
  .page-contact .ct-coop__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-contact .ct-coop__fig {
    max-width: 100%;
  }

  .page-contact .ct-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px;
  }

  .page-contact .ct-track::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 7px;
    height: 2px;
    background: linear-gradient(90deg, var(--bd-cyan) 0%, var(--bd-line) 48%, var(--bd-orange) 100%);
    opacity: .85;
  }

  .page-contact .ct-track__node {
    padding-left: 0;
    padding-top: 40px;
  }

  .page-contact .ct-track__dot {
    left: 0;
    top: 0;
  }
}

@media (min-width: 1080px) {
  .page-contact .ct-card {
    padding: 30px 30px 32px 32px;
  }

  .page-contact .ct-item__body {
    padding-left: 42px;
  }
}