.page-contact {
  --ct-gap: clamp(20px, 3vw, 36px);
  --ct-pad: clamp(20px, 3vw, 32px);
  --ct-radius: clamp(18px, 2.4vw, 26px);
  --ct-body-line: rgba(27, 23, 18, .76);
}

.page-contact .crumbs {
  padding-top: clamp(16px, 3vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  padding-block: clamp(22px, 4vw, 44px) clamp(36px, 6vw, 76px);
}

.page-contact .ct-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .ct-hero__main h1 {
  margin: 14px 0 18px;
  max-width: 17em;
}

.page-contact .ct-hero__actions {
  margin-top: 26px;
  gap: 12px;
}

.page-contact .ct-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .ct-quick__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-contact .ct-quick__key {
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(11, 31, 51, .62);
}

.page-contact .ct-quick__val {
  font-size: .95rem;
  color: var(--graphite);
  word-break: break-word;
}

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

.page-contact .ct-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--ct-radius);
}

@media (min-width: 900px) {
  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: center;
  }
}

/* ---------- 主体双栏 ---------- */
.page-contact .ct-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
  padding-block: clamp(8px, 2vw, 18px) clamp(40px, 6vw, 84px);
}

.page-contact .ct-body__main {
  min-width: 0;
}

.page-contact .ct-block + .ct-block {
  margin-top: clamp(38px, 6vw, 70px);
}

.page-contact .ct-block h2 {
  margin: 10px 0 12px;
}

.page-contact .ct-block__intro {
  max-width: 34em;
  color: var(--ct-body-line);
  line-height: 1.85;
}

@media (min-width: 1000px) {
  .page-contact .ct-body {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, .72fr);
  }

  .page-contact .ct-body__aside {
    position: sticky;
    top: calc(var(--masthead-h) + 26px);
  }
}

/* ---------- 合作流程 ---------- */
.page-contact .ct-steps {
  position: relative;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-contact .ct-steps::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 46px;
  bottom: 46px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--signal-soft), var(--mint));
  opacity: .55;
}

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

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

.page-contact .ct-step__summary {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 22px;
  align-items: center;
  gap: 16px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .ct-step__no {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--r-pill);
  background: var(--navy);
  color: var(--paper);
  font-size: .78rem;
  letter-spacing: .08em;
  transition: background .18s ease, color .18s ease;
}

.page-contact .ct-step[open] .ct-step__no {
  background: var(--signal);
  color: var(--navy);
}

.page-contact .ct-step__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 1.6vw, 1.22rem);
  color: var(--navy);
  line-height: 1.4;
}

.page-contact .ct-step__mark {
  position: relative;
  width: 22px;
  height: 22px;
  justify-self: end;
}

.page-contact .ct-step__mark::before,
.page-contact .ct-step__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: var(--graphite);
  transform: translateY(-50%);
  transition: transform .2s ease;
}

.page-contact .ct-step__mark::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-contact .ct-step[open] .ct-step__mark::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-contact .ct-step__body {
  padding: 0 0 22px 60px;
}

.page-contact .ct-step__body p {
  margin: 0;
  max-width: 36em;
  color: var(--ct-body-line);
  line-height: 1.85;
}

/* ---------- 咨询前准备清单 ---------- */
.page-contact .ct-prep {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

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

.page-contact .ct-prep__label {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  border-radius: var(--r-md);
  background: rgba(27, 23, 18, .04);
  cursor: pointer;
  transition: background .18s ease;
}

.page-contact .ct-prep__label:hover {
  background: rgba(27, 23, 18, .075);
}

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

.page-contact .ct-prep__box {
  position: relative;
  width: 24px;
  height: 24px;
  margin-top: 2px;
  border: 2px solid var(--slate);
  border-radius: 8px;
  transition: background .18s ease, border-color .18s ease;
}

.page-contact .ct-prep__input:checked + .ct-prep__box {
  background: var(--mint-deep);
  border-color: var(--mint-deep);
}

.page-contact .ct-prep__input:checked + .ct-prep__box::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 3px;
  width: 6px;
  height: 11px;
  border: 2px solid var(--white);
  border-top: 0;
  border-left: 0;
  transform: rotate(40deg);
}

.page-contact .ct-prep__input:focus-visible + .ct-prep__box {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-contact .ct-prep__text {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.page-contact .ct-prep__text strong {
  font-size: .98rem;
  font-weight: 700;
  color: var(--navy);
}

.page-contact .ct-prep__input:checked ~ .ct-prep__text strong {
  color: var(--mint-deep);
}

.page-contact .ct-prep__text span {
  font-size: .92rem;
  line-height: 1.72;
  color: var(--ct-body-line);
}

/* ---------- 粘性联系卡 ---------- */
.page-contact .ct-card {
  background: var(--navy);
  color: var(--paper);
  border-radius: var(--ct-radius);
  padding: var(--ct-pad);
  box-shadow: 0 30px 60px -34px rgba(11, 31, 51, .7);
}

.page-contact .ct-card__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--white);
}

.page-contact .ct-card__note {
  margin: 0 0 18px;
  font-size: .86rem;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .ct-card__row {
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-top: 1px solid var(--line-dark);
}

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

.page-contact .ct-card__key {
  font-size: .66rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--signal-soft);
}

.page-contact .ct-card__val {
  font-size: .96rem;
  line-height: 1.55;
  color: var(--white);
  word-break: break-word;
}

.page-contact .ct-card__val--mono {
  font-family: var(--font-mono);
  letter-spacing: .01em;
}

.page-contact .ct-card__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line-dark);
}

/* ---------- 响应说明（深色） ---------- */
.page-contact .ct-response {
  padding-block: clamp(48px, 7vw, 96px);
  color: var(--paper);
}

.page-contact .ct-response__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-contact .ct-response .kicker {
  color: var(--mint);
}

.page-contact .ct-response h2 {
  margin: 10px 0 0;
  color: var(--white);
}

.page-contact .ct-response__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .ct-response__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 15px 0;
  border-top: 1px solid var(--line-dark);
}

.page-contact .ct-response__item::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 10px;
  border-radius: 50%;
  background: var(--signal);
}

.page-contact .ct-response__item > span {
  min-width: 0;
}

.page-contact .ct-response__item strong {
  display: block;
  margin-bottom: 3px;
  font-size: .98rem;
  color: var(--white);
}

.page-contact .ct-response__item span span {
  font-size: .93rem;
  line-height: 1.75;
  color: rgba(247, 242, 231, .78);
}

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

.page-contact .ct-response__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--ct-radius);
}

@media (min-width: 900px) {
  .page-contact .ct-response__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .9fr);
  }
}

/* ---------- 渠道分工 ---------- */
.page-contact .ct-channels-sec {
  padding-block: clamp(48px, 7vw, 96px);
}

.page-contact .ct-channels-sec h2 {
  margin: 10px 0 0;
}

.page-contact .ct-channels {
  margin-top: 28px;
}

.page-contact .ct-channel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 22px 0;
  border-top: 1px solid var(--line-soft);
}

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

.page-contact .ct-channel__head {
  position: relative;
  padding-left: 16px;
  display: grid;
  gap: 5px;
  min-width: 0;
}

.page-contact .ct-channel__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: var(--signal);
}

.page-contact .ct-channel--mint .ct-channel__head::before {
  background: var(--mint-deep);
}

.page-contact .ct-channel--slate .ct-channel__head::before {
  background: var(--slate);
}

.page-contact .ct-channel__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.04rem;
  color: var(--navy);
}

.page-contact .ct-channel__value {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .01em;
  color: var(--mint-deep);
  word-break: break-word;
}

.page-contact .ct-channel__desc {
  margin: 0;
  font-size: .95rem;
  line-height: 1.78;
  color: var(--ct-body-line);
}

@media (min-width: 780px) {
  .page-contact .ct-channel {
    grid-template-columns: minmax(0, 250px) minmax(0, 1fr);
    gap: 8px 34px;
    align-items: start;
  }
}

/* ---------- 订阅与案例 ---------- */
.page-contact .ct-subscribe {
  margin-top: clamp(8px, 2vw, 20px);
  padding-block: clamp(40px, 6vw, 78px);
  background: var(--mint);
  color: var(--navy);
}

.page-contact .ct-subscribe__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-contact .ct-subscribe .kicker {
  color: rgba(11, 31, 51, .62);
}

.page-contact .ct-subscribe h2 {
  margin: 10px 0 12px;
  color: var(--navy);
}

.page-contact .ct-subscribe p {
  max-width: 34em;
  margin: 0;
  font-size: .98rem;
  line-height: 1.85;
  color: rgba(11, 31, 51, .82);
}

.page-contact .ct-sub__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-contact .ct-sub__fact {
  padding: 7px 15px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .58);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .03em;
  color: var(--navy);
}

.page-contact .ct-sub {
  background: var(--navy);
  color: var(--paper);
  border-radius: var(--r-lg);
  padding: 0 clamp(18px, 3vw, 26px);
}

.page-contact .ct-sub__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--white);
}

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

.page-contact .ct-sub__summary::after {
  content: "+";
  font-size: 1.5rem;
  line-height: 1;
  color: var(--mint);
  transition: transform .18s ease;
}

.page-contact .ct-sub[open] .ct-sub__summary::after {
  transform: rotate(45deg);
}

.page-contact .ct-sub__body {
  padding: 16px 0 22px;
  border-top: 1px solid var(--line-dark);
}

.page-contact .ct-sub__body p {
  max-width: none;
  margin: 0 0 12px;
  font-size: .93rem;
  line-height: 1.78;
  color: rgba(247, 242, 231, .82);
}

.page-contact .ct-sub__body .cluster {
  gap: 10px;
  margin-top: 16px;
}

@media (min-width: 880px) {
  .page-contact .ct-subscribe__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-step__no,
  .page-contact .ct-step__mark::before,
  .page-contact .ct-step__mark::after,
  .page-contact .ct-prep__box,
  .page-contact .ct-sub__summary::after {
    transition: none;
  }
}