.page-contact {
  --ct-border: 2px solid var(--charcoal);
  --ct-gap: 20px;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--blue);
  color: var(--white);
  padding: 28px 0 0;
}

.page-contact .ct-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -30% -30% -60% 46%;
  background: var(--blue-deep);
  transform: rotate(13deg);
}

.page-contact .ct-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0 auto 0 0;
  width: 6px;
  background: var(--orange);
}

.page-contact .crumbs {
  margin-bottom: 26px;
}

.page-contact .ct-sep {
  color: var(--silver);
}

.page-contact .ct-hero__idx {
  color: var(--orange-soft);
  margin: 0 0 14px;
}

.page-contact .ct-hero__title {
  margin: 0;
  font-size: clamp(34px, 8.4vw, 86px);
  font-weight: 300;
  line-height: 1.03;
  letter-spacing: -0.02em;
}

.page-contact .ct-hero__lede {
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--blue-tint);
}

.page-contact .ct-strip {
  list-style: none;
  margin: 34px 0 0;
  padding: 0 0 28px;
  display: grid;
  gap: 16px;
}

.page-contact .ct-strip__item {
  padding-top: 10px;
  border-top: 2px solid var(--orange);
}

.page-contact .ct-strip__k {
  display: block;
  color: var(--silver);
  margin-bottom: 6px;
}

.page-contact .ct-strip__v {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  word-break: break-word;
}

.page-contact .ct-ruler {
  height: 12px;
  border-bottom: 2px solid var(--orange);
  background-image: repeating-linear-gradient(
    to right,
    var(--silver-line) 0 1px,
    transparent 1px 18px
  );
  background-size: 100% 8px;
  background-repeat: repeat-x;
  background-position: 0 0;
  opacity: .8;
}

/* ---------- 章节骨架 ---------- */
.page-contact .ct-sec {
  padding: 52px 0;
}

.page-contact .ct-sec--tight {
  padding: 44px 0 56px;
}

.page-contact .ct-sec--paper {
  background: var(--paper);
}

.page-contact .ct-sec--tint {
  background: var(--blue-tint);
}

.page-contact .ct-sec--ink {
  background: var(--blue-ink);
  color: var(--paper);
}

.page-contact .ct-sec--blue {
  background: var(--blue);
  color: var(--white);
}

.page-contact .ct-sec__head {
  max-width: 76ch;
}

.page-contact .ct-sec__idx {
  color: var(--orange);
  margin: 0 0 12px;
}

.page-contact .ct-sec__title {
  margin: 0;
  font-size: clamp(23px, 4.4vw, 38px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-contact .ct-sec__note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .ct-sec--ink .ct-sec__note,
.page-contact .ct-sec--blue .ct-sec__note {
  color: var(--blue-tint);
}

.page-contact .ct-sec--blue .ct-sec__idx {
  color: var(--orange-soft);
}

.page-contact .ct-inline {
  color: var(--blue);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-contact .ct-sec--ink .ct-inline,
.page-contact .ct-sec--blue .ct-inline {
  color: var(--orange-soft);
}

.page-contact .ct-foot-note {
  margin: 26px 0 0;
  padding: 14px 16px;
  border-left: 4px solid var(--orange);
  background: var(--white);
  color: var(--charcoal);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 询价清单 ---------- */
.page-contact .ct-split {
  display: grid;
  gap: 28px;
  margin-top: 32px;
}

.page-contact .ct-check {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--ct-border);
}

.page-contact .ct-check__item {
  border-bottom: 1px solid var(--silver-line);
}

.page-contact .ct-check__label {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 16px 10px;
  cursor: pointer;
  transition: background .18s var(--ease);
}

.page-contact .ct-check__label:hover {
  background: var(--white);
}

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

.page-contact .ct-check__num {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-contact .ct-check__t {
  display: block;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.page-contact .ct-check__d {
  display: block;
  margin-top: 5px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .ct-check__state {
  padding: 3px 7px;
  border: 1px solid var(--silver-line);
  color: var(--muted);
  white-space: nowrap;
}

.page-contact .ct-check__ok {
  display: none;
}

.page-contact .ct-check__item:has(.ct-check__input:checked) .ct-check__label {
  background: var(--blue-tint);
}

.page-contact .ct-check__item:has(.ct-check__input:checked) .ct-check__t {
  color: var(--blue-deep);
}

.page-contact .ct-check__item:has(.ct-check__input:checked) .ct-check__state {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--charcoal);
}

.page-contact .ct-check__item:has(.ct-check__input:checked) .ct-check__wait {
  display: none;
}

.page-contact .ct-check__item:has(.ct-check__input:checked) .ct-check__ok {
  display: inline;
}

.page-contact .ct-check__input:focus-visible ~ .ct-check__state {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

/* ---------- 图片 ---------- */
.page-contact .ct-figure {
  margin: 0;
}

.page-contact .ct-figure__cap {
  margin: 12px 0 0;
  padding-left: 12px;
  border-left: 3px solid var(--orange);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .ct-sec--ink .ct-figure__cap {
  color: var(--silver);
}

.page-contact .ct-figure--wide {
  margin-top: 32px;
}

.page-contact .img-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 联系渠道卡片 ---------- */
.page-contact .ct-channels {
  display: grid;
  gap: var(--ct-gap);
  margin-top: 30px;
}

.page-contact .ct-card {
  padding: 0;
  display: flex;
  flex-direction: column;
  background: var(--white);
}

.page-contact .ct-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: var(--blue-deep);
  color: var(--white);
  border-bottom: var(--ct-border);
}

.page-contact .ct-card__head .plate__idx {
  color: var(--blue-tint);
}

.page-contact .ct-card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px 16px 22px;
}

.page-contact .ct-card__body .label {
  color: var(--muted);
  margin: 0;
}

.page-contact .ct-card__value {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  word-break: break-word;
}

.page-contact .ct-card__value--lg {
  font-size: 25px;
  letter-spacing: 0.01em;
  color: var(--blue);
}

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

.page-contact .ct-card__list {
  list-style: none;
  margin: auto 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--silver-line);
  display: grid;
  gap: 9px;
  font-size: 14px;
  line-height: 1.65;
}

.page-contact .ct-card__list li {
  position: relative;
  padding-left: 16px;
}

.page-contact .ct-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 9px;
  height: 2px;
  background: var(--orange);
}

/* ---------- 分档阶梯 ---------- */
.page-contact .ct-tiers {
  margin-top: 30px;
  border: var(--ct-border);
  background: var(--white);
  color: var(--charcoal);
  box-shadow: var(--hard);
}

.page-contact .seg {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
}

.page-contact .seg__btn {
  flex: 1 1 30%;
  min-width: 88px;
  padding: 15px 10px;
  border: 0;
  border-right: 2px solid var(--silver-line);
  border-bottom: 2px solid var(--charcoal);
  background: var(--paper);
  color: var(--charcoal);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .02em;
  cursor: pointer;
  transition: background .18s var(--ease), color .18s var(--ease);
}

.page-contact .seg__btn:hover {
  background: var(--blue-tint);
}

.page-contact .seg__btn[aria-selected="true"] {
  background: var(--blue);
  color: var(--white);
  box-shadow: inset 0 -4px 0 var(--orange);
}

.page-contact .seg__btn:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -4px;
}

.page-contact .seg-panel[hidden] {
  display: none;
}

.page-contact .ct-tier {
  padding: 22px 16px 24px;
}

.page-contact .ct-tier__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: .01em;
}

.page-contact .ct-tier__name {
  margin: 5px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.page-contact .ct-tier__grid {
  margin-top: 18px;
  display: grid;
  gap: 16px;
}

.page-contact .ct-tier__cell p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
}

.page-contact .ct-tier__cell .label {
  display: block;
  margin: 0 0 6px;
  color: var(--muted);
}

/* ---------- 协作切换 ---------- */
.page-contact .ct-coop-wrap {
  margin-top: 30px;
  border: var(--ct-border);
  background: var(--white);
  box-shadow: var(--hard);
}

.page-contact .ct-coop-wrap .seg {
  border-bottom: var(--ct-border);
}

.page-contact .ct-coop-wrap .seg__btn {
  border-bottom: 0;
}

.page-contact .ct-coop {
  display: grid;
  gap: 0;
}

.page-contact .ct-coop__col {
  padding: 20px 16px 22px;
}

.page-contact .ct-coop__col + .ct-coop__col {
  border-top: var(--ct-border);
}

.page-contact .ct-coop__col h3 {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 700;
  color: var(--blue-deep);
}

.page-contact .ct-coop__col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .ct-coop__col li {
  position: relative;
  padding-left: 18px;
}

.page-contact .ct-coop__col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 11px;
  height: 2px;
  background: var(--silver-line);
}

/* ---------- 响应口径 ---------- */
.page-contact .ct-flow {
  margin-top: 30px;
  border-top: 2px solid var(--orange);
}

.page-contact .ct-flow__item {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(192, 199, 208, .38);
}

.page-contact .ct-flow__k {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--orange-soft);
  letter-spacing: .02em;
}

.page-contact .ct-flow__v {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--blue-tint);
}

.page-contact .ct-manual-wrap {
  margin-top: 30px;
}

.page-contact .ct-mini {
  margin: 0 0 14px;
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .ct-manual {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .ct-manual li {
  padding: 12px 14px;
  border-left: 4px solid var(--orange);
  background: rgba(10, 30, 51, .42);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper);
}

/* ---------- 结尾 ---------- */
.page-contact .ct-close {
  display: grid;
  gap: 28px;
}

.page-contact .ct-close__p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .ct-close__links {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .ct-close__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--ct-border);
}

.page-contact .ct-close__list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--silver-line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .ct-sec {
    padding: 72px 0;
  }

  .page-contact .ct-sec--tight {
    padding: 60px 0 76px;
  }

  .page-contact .ct-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-contact .ct-check__label {
    grid-template-columns: 48px minmax(0, 1fr) auto;
    padding: 18px 14px;
  }

  .page-contact .ct-tier {
    padding: 26px 24px 28px;
  }

  .page-contact .ct-coop__col {
    padding: 24px 22px 26px;
  }
}

@media (min-width: 860px) {
  .page-contact .ct-sec {
    padding: 88px 0;
  }

  .page-contact .ct-sec--tight {
    padding: 72px 0 96px;
  }

  .page-contact .ct-hero {
    padding-top: 36px;
  }

  .page-contact .crumbs {
    margin-bottom: 40px;
  }

  .page-contact .ct-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-contact .ct-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-contact .ct-seg-btn,
  .page-contact .seg__btn {
    flex: 1 1 0;
    min-width: 0;
  }

  .page-contact .ct-tier__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }

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

  .page-contact .ct-coop__col + .ct-coop__col {
    border-top: 0;
    border-left: var(--ct-border);
  }

  .page-contact .ct-flow__item {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 24px;
    padding: 22px 0;
  }

  .page-contact .ct-close {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-check__label,
  .page-contact .seg__btn {
    transition: none;
  }
}