.page-contact {
  --ct-stripe: rgba(28, 37, 48, 0.6);
  background: var(--ink);
  color: var(--white);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.75;
}

/* ---------- 面包屑条 ---------- */
.page-contact .ct-crumbbar {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  padding: 34px 0 46px;
  overflow: hidden;
}

.page-contact .ct-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--ct-stripe) 1px, transparent 1px),
    linear-gradient(to bottom, var(--ct-stripe) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 88%);
  pointer-events: none;
}

.page-contact .ct-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: center;
}

.page-contact .ct-hero__title {
  margin: 12px 0 16px;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(36px, 9vw, 72px);
  line-height: 1.02;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .ct-hero__mark {
  color: var(--cyan);
}

.page-contact .ct-hero__lead {
  max-width: 60ch;
  margin: 0;
  color: var(--steel);
  font-size: 15.5px;
}

.page-contact .ct-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .ct-hero__visual {
  border: 1px solid var(--line);
  box-shadow: var(--hard-shadow);
  background: var(--panel);
}

.page-contact .ct-hero__visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

/* ---------- 联络面板 ---------- */
.page-contact .ct-desk {
  padding: 0 0 52px;
}

.page-contact .ct-desk__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 34px 0;
}

.page-contact .ct-h2 {
  margin: 8px 0 0;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(25px, 5.2vw, 44px);
  line-height: 1.16;
  letter-spacing: 0.01em;
}

.page-contact .ct-sub {
  max-width: 66ch;
  margin: 10px 0 0;
  color: var(--steel);
  font-size: 15px;
}

/* 事由列表 */
.page-contact .ct-reasons {
  margin-top: 22px;
  border-top: 1px solid var(--line);
}

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

.page-contact .ct-reason__sum {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) 18px;
  grid-template-rows: auto auto;
  gap: 2px 12px;
  align-items: center;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  transition: color 240ms var(--ease);
}

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

.page-contact .ct-reason__sum:hover .ct-reason__name,
.page-contact .ct-reason__sum:focus-visible .ct-reason__name {
  color: var(--cyan);
}

.page-contact .ct-reason__idx {
  grid-column: 1;
  grid-row: 1 / span 2;
  align-self: center;
  font-size: 13px;
  color: var(--cyan);
}

.page-contact .ct-reason__name {
  grid-column: 2;
  grid-row: 1;
  font-size: 17px;
  font-weight: 600;
  color: var(--white);
  transition: color 240ms var(--ease);
}

.page-contact .ct-reason__hint {
  grid-column: 2;
  grid-row: 2;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

.page-contact .ct-reason__icon {
  position: relative;
  grid-column: 3;
  grid-row: 1 / span 2;
  align-self: center;
  justify-self: end;
  width: 14px;
  height: 14px;
}

.page-contact .ct-reason__icon::before,
.page-contact .ct-reason__icon::after {
  content: "";
  position: absolute;
  background: var(--steel);
}

.page-contact .ct-reason__icon::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 1px;
}

.page-contact .ct-reason__icon::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 1px;
  transition: transform 240ms var(--ease);
}

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

.page-contact .ct-reason[open] .ct-reason__name {
  color: var(--cyan);
}

.page-contact .ct-reason__body {
  padding: 0 0 20px 44px;
  color: var(--steel);
  font-size: 14.5px;
}

.page-contact .ct-reason__body p {
  margin: 0;
}

.page-contact .ct-reason__body a {
  color: var(--cyan);
}

.page-contact .ct-mats {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

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

.page-contact .ct-mats li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 1px;
  background: var(--cyan);
}

/* 等宽信息块 */
.page-contact .ct-dock {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--hard-shadow);
  padding: 18px 20px 16px;
}

.page-contact .ct-dock__label {
  margin: 0 0 12px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--steel);
}

.page-contact .ct-dock__row {
  display: grid;
  gap: 3px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.page-contact .ct-dock__k {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-contact .ct-dock__v {
  font-size: 14.5px;
  color: var(--white);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .ct-dock__v--accent {
  color: var(--cyan);
  font-size: 13.5px;
}

.page-contact .ct-dock__foot {
  margin: 8px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

/* ---------- 数据修正 ---------- */
.page-contact .ct-fix {
  border-top: 1px solid var(--line);
  padding: 42px 0 52px;
}

.page-contact .ct-fix__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: 26px;
}

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

.page-contact .ct-fstep {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-fstep__no {
  font-size: 14px;
  color: var(--orange);
  letter-spacing: 0.06em;
}

.page-contact .ct-fstep__t {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 600;
  color: var(--white);
}

.page-contact .ct-fstep__body p {
  margin: 0;
  color: var(--steel);
  font-size: 14.5px;
}

.page-contact .ct-fix__side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .ct-tip {
  border-left: 2px solid var(--violet);
  padding: 4px 0 4px 16px;
}

.page-contact .ct-tip--warn {
  border-left-color: var(--orange);
}

.page-contact .ct-tip__k {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--steel);
}

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

.page-contact .ct-tip__t a {
  color: var(--cyan);
}

/* ---------- 合作四阶段 ---------- */
.page-contact .ct-flow {
  border-top: 1px solid var(--line);
  padding: 42px 0 52px;
}

.page-contact .ct-track {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--line);
}

.page-contact .ct-node {
  --ct-node-c: var(--cyan);
  position: relative;
  padding: 22px 0 24px;
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-node--violet {
  --ct-node-c: var(--violet);
}

.page-contact .ct-node--orange {
  --ct-node-c: var(--orange);
}

.page-contact .ct-node::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 2px;
  background: var(--ct-node-c);
}

.page-contact .ct-node__no {
  display: block;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ct-node-c);
}

.page-contact .ct-node__t {
  margin: 8px 0 6px;
  font-size: 18px;
  font-weight: 600;
  color: var(--white);
}

.page-contact .ct-node__d {
  margin: 0;
  color: var(--steel);
  font-size: 14.5px;
}

.page-contact .ct-node__out {
  margin: 12px 0 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ct-node-c);
}

.page-contact .ct-flow__fig {
  margin: 30px 0 0;
}

.page-contact .ct-flow__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------- 联络渠道 ---------- */
.page-contact .ct-channels {
  border-top: 1px solid var(--line);
  padding: 42px 0 52px;
}

.page-contact .ct-channels__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-top: 26px;
  border-top: 1px solid var(--line);
}

.page-contact .ct-chan {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-chan__k {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--steel);
}

.page-contact .ct-chan__t {
  margin: 8px 0 6px;
  font-size: 19px;
  font-weight: 600;
  color: var(--white);
}

.page-contact .ct-chan__v {
  margin: 0 0 14px;
  font-size: 15px;
  color: var(--cyan);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .ct-chan--tel .ct-chan__v {
  color: var(--orange);
}

.page-contact .ct-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .ct-list li {
  position: relative;
  padding-left: 18px;
  color: var(--steel);
  font-size: 14.5px;
}

.page-contact .ct-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 1px;
  background: var(--line);
}

.page-contact .ct-channels__note {
  margin: 18px 0 0;
  font-size: 13.5px;
  color: var(--steel);
}

/* ---------- 地址与备案条带 ---------- */
.page-contact .ct-address {
  border-top: 1px solid var(--line);
  padding: 32px 0 44px;
}

.page-contact .ct-address__band {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px 32px;
}

.page-contact .ct-address__k {
  margin: 0 0 5px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--steel);
}

.page-contact .ct-address__v {
  margin: 0;
  font-size: 14.5px;
  color: var(--white);
}

.page-contact .ct-address__more {
  margin: 26px 0 0;
  font-size: 14px;
  color: var(--steel);
}

.page-contact .ct-address__more a {
  color: var(--cyan);
}

/* ---------- 常见问题 ---------- */
.page-contact .ct-faq {
  border-top: 1px solid var(--line);
  padding: 42px 0 56px;
}

.page-contact .ct-faq__list {
  margin-top: 26px;
  border-top: 1px solid var(--line);
}

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

.page-contact .ct-q__sum {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18px;
  gap: 14px;
  align-items: center;
  padding: 17px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .ct-q__t {
  font-size: 16px;
  font-weight: 500;
  color: var(--white);
  transition: color 240ms var(--ease);
}

.page-contact .ct-q__sum:hover .ct-q__t,
.page-contact .ct-q[open] .ct-q__t {
  color: var(--cyan);
}

.page-contact .ct-q__icon {
  position: relative;
  justify-self: end;
  width: 14px;
  height: 14px;
}

.page-contact .ct-q__icon::before,
.page-contact .ct-q__icon::after {
  content: "";
  position: absolute;
  background: var(--steel);
}

.page-contact .ct-q__icon::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 1px;
}

.page-contact .ct-q__icon::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 1px;
  transition: transform 240ms var(--ease);
}

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

.page-contact .ct-q__body {
  padding: 0 0 20px;
  color: var(--steel);
  font-size: 14.5px;
  max-width: 76ch;
}

.page-contact .ct-q__body p {
  margin: 0;
}

/* ---------- 收尾 ---------- */
.page-contact .ct-cta {
  border-top: 1px solid var(--line);
  padding: 42px 0 64px;
}

.page-contact .ct-cta__box {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  border: 1px solid var(--line);
  background: var(--mist);
  box-shadow: var(--hard-shadow);
  padding: 26px 22px;
}

.page-contact .ct-cta__t {
  margin: 0 0 10px;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(23px, 4.4vw, 34px);
  line-height: 1.2;
}

.page-contact .ct-cta__text p {
  margin: 0;
  color: var(--steel);
  font-size: 14.5px;
  max-width: 62ch;
}

.page-contact .ct-cta__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-self: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .ct-address__band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .ct-channels__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 40px;
  }

  .page-contact .ct-cta__box {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 32px 30px;
  }
}

@media (min-width: 1000px) {
  .page-contact .ct-hero {
    padding: 44px 0 56px;
  }

  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-contact .ct-desk__panel {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 56px;
    padding: 42px 0;
  }

  .page-contact .ct-desk__dock {
    position: sticky;
    top: 24px;
  }

  .page-contact .ct-fix__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 48px;
  }

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

  .page-contact .ct-node {
    border-bottom: 0;
    border-left: 1px solid var(--line);
    padding: 24px 22px 8px 20px;
  }

  .page-contact .ct-node:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-contact .ct-node:last-child {
    padding-right: 0;
  }

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

  .page-contact .ct-q__t {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-reason__icon::after,
  .page-contact .ct-q__icon::after,
  .page-contact .ct-reason__name,
  .page-contact .ct-q__t {
    transition: none;
  }
}