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

/* ---------- Hero ---------- */
.page-contact .ct-hero {
  position: relative;
  padding: 2rem 1.25rem 2.4rem;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(115% 80% at 92% -10%, rgba(138, 92, 255, .22), transparent 60%),
    radial-gradient(80% 60% at 4% 0%, rgba(53, 240, 224, .14), transparent 62%),
    var(--ink-900);
  overflow: hidden;
}

.page-contact .ct-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 26px);
  opacity: .85;
  pointer-events: none;
}

.page-contact .ct-hero__grid {
  display: grid;
  gap: 2rem;
  max-width: var(--shell-w);
  margin: 0 auto;
}

.page-contact .crumbs {
  margin: 0 0 1.2rem;
}

.page-contact .ct-coords {
  margin: 0 0 .55rem;
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-contact .ct-hero__title {
  margin: 0 0 1rem;
  font-size: clamp(1.9rem, 5.6vw, 3.25rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-contact .ct-hero__lead {
  margin: 0;
  max-width: 48ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
}

.page-contact .ct-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.7rem;
}

.page-contact .ct-hero__panel {
  position: relative;
  padding: 1.35rem 1.15rem 1.2rem;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(20, 30, 69, .92), rgba(7, 11, 31, .92));
  clip-path: polygon(0 0, calc(100% - var(--ct-cut)) 0, 100% var(--ct-cut), 100% 100%, 0 100%);
}

.page-contact .ct-panel__label {
  margin: 0;
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--muted);
}

.page-contact .ct-facts {
  display: grid;
  gap: .85rem;
  margin: .95rem 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-fact {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .75rem;
  align-items: baseline;
  padding-bottom: .85rem;
  border-bottom: 1px dashed var(--line);
}

.page-contact .ct-fact:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .ct-fact__num {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--cyan);
}

.page-contact .ct-fact__txt {
  font-size: .84rem;
  line-height: 1.6;
  color: var(--text);
}

.page-contact .ct-panel__note {
  margin: 1rem 0 0;
  padding-top: .9rem;
  border-top: 1px solid var(--line);
  font-size: .78rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- Section shell ---------- */
.page-contact .ct-sec {
  position: relative;
  padding: 2.75rem 0;
  border-top: 1px solid var(--line);
}

.page-contact .ct-sec--band {
  background: var(--ink-800);
}

.page-contact .ct-sec--first {
  border-top: 0;
}

.page-contact .ct-inner {
  width: 100%;
  max-width: var(--shell-w);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.page-contact .sec-head {
  margin-bottom: 1.7rem;
}

.page-contact .ct-venue__note {
  margin: 1.2rem 0 0;
  max-width: 62ch;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .ct-venue__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 224, .4);
}

.page-contact .ct-venue__note a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 合作类型 ---------- */
.page-contact .ct-types {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .ct-type {
  position: relative;
  padding: 1.35rem 1.15rem 1.4rem;
  border: 1px solid var(--line);
  background: var(--ink-800);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%);
  transition: transform .22s var(--ease), border-color .22s var(--ease);
}

.page-contact .ct-type::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  height: 3px;
  background: var(--cyan);
}

.page-contact .ct-type--violet::before { background: var(--violet); }
.page-contact .ct-type--lime::before { background: var(--lime); }
.page-contact .ct-type--orange::before { background: var(--orange); }

.page-contact .ct-type:hover,
.page-contact .ct-type:focus-within {
  border-color: rgba(53, 240, 224, .55);
  transform: translateY(-3px);
}

.page-contact .ct-type__idx {
  margin: 0 0 .7rem;
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--muted);
}

.page-contact .ct-type__title {
  margin: 0 0 .6rem;
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--white);
}

.page-contact .ct-type__desc {
  margin: 0 0 .9rem;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .ct-type__use {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin: 0;
  padding-top: .85rem;
  border-top: 1px dashed var(--line);
  font-size: .8rem;
  color: var(--muted);
}

/* ---------- 四步流程 ---------- */
.page-contact .ct-flow {
  position: relative;
  display: grid;
  gap: 1.8rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-flow::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: repeating-linear-gradient(180deg, var(--line) 0 8px, transparent 8px 16px);
}

.page-contact .ct-step {
  position: relative;
  padding-left: 3rem;
}

.page-contact .ct-step__num {
  position: absolute;
  left: 0;
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  color: var(--cyan);
  font-size: .78rem;
  letter-spacing: .04em;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.page-contact .ct-step__title {
  margin: 0 0 .5rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
}

.page-contact .ct-step__desc {
  margin: 0 0 .7rem;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .ct-step__who {
  margin: 0;
  font-size: .74rem;
  letter-spacing: .02em;
  color: var(--muted);
}

.page-contact .ct-diagram {
  margin: 2.4rem 0 0;
}

/* ---------- 联系区 ---------- */
.page-contact .ct-contact-panel {
  position: relative;
  padding: 1.9rem 1.15rem 1.6rem;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(20, 30, 69, .85), rgba(7, 11, 31, .95));
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-contact .ct-contact-panel::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 10px;
  background: repeating-linear-gradient(90deg, var(--cyan) 0 2px, transparent 2px 22px);
  opacity: .5;
}

.page-contact .ct-contact-panel__coords {
  margin: 0 0 1.4rem;
  font-size: .7rem;
  letter-spacing: .2em;
  color: var(--muted);
}

.page-contact .ct-fields {
  display: grid;
  gap: 1.15rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .ct-field {
  padding-left: .95rem;
  border-left: 2px solid var(--cyan);
}

.page-contact .ct-field__key {
  margin: 0 0 .35rem;
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-contact .ct-field__val {
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .ct-contact-panel__tip {
  margin: 1.5rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  font-size: .86rem;
  line-height: 1.8;
  color: var(--text);
}

/* ---------- 交付物 ---------- */
.page-contact .ct-deliver {
  display: grid;
  gap: 2rem;
}

.page-contact .ct-deliver__intro {
  margin: 0 0 1rem;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--text);
}

.page-contact .ct-deliver__hint {
  margin: 0;
  font-size: .85rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .ct-deliver__hint a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 224, .4);
}

.page-contact .ct-deliver__hint a:hover {
  border-bottom-color: var(--cyan);
}

.page-contact .ct-deliver__list {
  display: grid;
  gap: 1.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-deliver__item {
  padding-left: 1rem;
  border-left: 2px solid var(--line);
  transition: border-color .22s var(--ease);
}

.page-contact .ct-deliver__item:hover {
  border-left-color: var(--violet);
}

.page-contact .ct-deliver__idx {
  display: block;
  margin-bottom: .35rem;
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--muted);
}

.page-contact .ct-deliver__name {
  margin: 0 0 .45rem;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--white);
}

.page-contact .ct-deliver__text {
  margin: 0;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--text);
}

/* ---------- 案例场景 ---------- */
.page-contact .ct-scenes {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .ct-scene {
  position: relative;
  padding: 1.25rem 1.15rem 1.35rem;
  background: linear-gradient(180deg, rgba(14, 21, 51, .9), rgba(14, 21, 51, .55));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--ct-cut) 100%, 0 calc(100% - var(--ct-cut)));
}

.page-contact .ct-scene__tag {
  margin: 0 0 .7rem;
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--violet);
}

.page-contact .ct-scene__title {
  margin: 0 0 .6rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
}

.page-contact .ct-scene__text {
  margin: 0;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--text);
}

/* ---------- FAQ ---------- */
.page-contact .ct-faq {
  border-top: 1px solid var(--line);
}

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

.page-contact .ct-faq summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.05rem 0;
  list-style: none;
  cursor: pointer;
  font-size: .98rem;
  font-weight: 600;
  color: var(--white);
}

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

.page-contact .ct-faq summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--cyan);
}

.page-contact .ct-faq details[open] summary::after {
  content: "–";
}

.page-contact .ct-faq details[open] summary {
  color: var(--cyan);
}

.page-contact .ct-faq p {
  max-width: 74ch;
  margin: 0 0 1.2rem;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--text);
}

.page-contact .ct-next {
  display: grid;
  gap: 1rem;
  margin-top: 2.2rem;
  padding: 1.5rem 1.15rem;
  border: 1px solid var(--line);
  background: linear-gradient(120deg, rgba(53, 240, 224, .1), rgba(138, 92, 255, .12));
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-contact .ct-next__lead {
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--white);
}

.page-contact .ct-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .ct-hero {
    padding: 2.8rem 2rem 3rem;
  }

  .page-contact .ct-inner {
    padding: 0 2rem;
  }

  .page-contact .ct-sec {
    padding: 3.5rem 0;
  }

  .page-contact .ct-types {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.15rem;
  }

  .page-contact .ct-fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.3rem 1.6rem;
  }

  .page-contact .ct-scenes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.15rem;
  }

  .page-contact .ct-deliver__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.6rem 1.4rem;
  }
}

@media (min-width: 1024px) {
  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .8fr);
    align-items: end;
    gap: 3rem;
  }

  .page-contact .ct-hero__title {
    max-width: 22ch;
  }

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

  .page-contact .ct-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .page-contact .ct-flow::before {
    left: 8px;
    right: 8px;
    top: 17px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: repeating-linear-gradient(90deg, var(--line) 0 10px, transparent 10px 20px);
  }

  .page-contact .ct-step {
    padding-left: 0;
  }

  .page-contact .ct-step__num {
    position: static;
    margin-bottom: .9rem;
  }

  .page-contact .ct-deliver {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: 3rem;
  }

  .page-contact .ct-next {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 2rem;
    padding: 1.6rem 1.8rem;
  }

  .page-contact .ct-contact-panel {
    padding: 2.2rem 2rem 1.9rem;
  }
}

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

  .page-contact .ct-type:hover,
  .page-contact .ct-type:focus-within {
    transform: none;
  }
}