.page-contact {
  --ct-card-pad: 22px;
  --ct-gap: 18px;
}

/* ---------- 首屏：信件式错位头部 ---------- */
.page-contact .ct-head {
  display: grid;
  gap: 32px;
  align-items: end;
  padding: 36px 0 8px;
}

.page-contact .ct-head__text {
  order: 2;
}

.page-contact .ct-head__figure {
  order: 1;
  margin: 0;
}

.page-contact .ct-head__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

/* ---------- 联系渠道 ---------- */
.page-contact .ct-channels .ct-grid {
  display: grid;
  gap: var(--ct-gap);
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .ct-card {
  position: relative;
  padding: var(--ct-card-pad);
  background: var(--paper-100);
  border: 1px solid var(--ink-700);
  border-radius: 4px 18px 4px 4px;
  box-shadow: 6px 6px 0 var(--paper-200);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-contact .ct-card:hover {
  transform: translateY(-3px);
  box-shadow: 10px 10px 0 var(--mist);
}

.page-contact .ct-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  color: var(--ink-700);
  background: var(--paper-200);
  border: 1px solid var(--line);
  border-radius: 50%;
}

.page-contact .ct-card__label {
  margin: 0 0 10px;
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--moss);
}

.page-contact .ct-card__value {
  margin: 0 0 16px;
  font-family: var(--font-num);
  font-size: clamp(18px, 2.4vw, 23px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-900);
  overflow-wrap: anywhere;
}

.page-contact .ct-card__addr {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0 0 16px;
}

.page-contact .ct-card__addr-line {
  font-family: var(--font-num);
  font-size: var(--step-0);
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--ink-900);
}

.page-contact .ct-card__use {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.75;
  color: var(--text);
}

.page-contact .ct-card__meta {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: var(--step--2);
  color: var(--moss);
}

/* ---------- 处理流程竖排面板 ---------- */
.page-contact .ct-panel {
  padding: var(--ct-card-pad);
  background: var(--mist);
  border: 1px solid var(--ink-700);
  border-radius: 18px 4px 4px 4px;
}

.page-contact .ct-panel__title {
  margin: 0 0 22px;
  font-size: var(--step-0);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--ink-900);
}

.page-contact .ct-steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-step {
  position: relative;
  padding-left: 52px;
}

.page-contact .ct-step::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 30px;
  bottom: -20px;
  width: 1px;
  background: var(--moss);
  opacity: 0.55;
}

.page-contact .ct-step:last-child::before {
  display: none;
}

.page-contact .ct-step__no {
  position: absolute;
  left: 0;
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 26px;
  font-size: var(--step--2);
  font-weight: 700;
  color: var(--paper-100);
  background: var(--ink-700);
  border-radius: 3px;
}

.page-contact .ct-step__name {
  margin: 0 0 6px;
  font-size: var(--step-0);
  font-weight: 800;
  color: var(--ink-900);
}

.page-contact .ct-step__text {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--text);
}

.page-contact .ct-panel__foot {
  margin: 24px 0 0;
  padding-top: 16px;
  border-top: 1px dashed rgba(20, 49, 42, 0.28);
  font-size: var(--step--2);
  line-height: 1.7;
  color: var(--ink-700);
}

/* ---------- 合作方向：错位色块流 ---------- */
.page-contact .ct-coop__stream {
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .ct-coop__block {
  padding: 26px 24px 28px;
  border: 1px solid var(--ink-700);
  border-radius: 4px;
  background: var(--paper-100);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-contact .ct-coop__block:hover {
  border-color: var(--orange);
  transform: translateY(-3px);
  box-shadow: 0 8px 0 rgba(210, 118, 47, 0.16);
}

.page-contact .ct-coop__block--a {
  background: linear-gradient(150deg, var(--paper-100) 0%, var(--paper-200) 100%);
}

.page-contact .ct-coop__block--b {
  background: linear-gradient(150deg, #E9F0EC 0%, var(--paper-100) 100%);
}

.page-contact .ct-coop__block--c {
  background: linear-gradient(150deg, var(--paper-100) 0%, #E4EDF1 100%);
}

.page-contact .ct-coop__no {
  display: block;
  margin-bottom: 14px;
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-contact .ct-coop__title {
  margin: 0 0 12px;
  font-size: var(--step-1);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--ink-900);
}

.page-contact .ct-coop__text {
  margin: 0 0 18px;
  font-size: var(--step-0);
  line-height: 1.75;
  color: var(--text);
}

.page-contact .ct-coop__materials {
  margin: 0;
  padding: 14px 16px;
  background: rgba(246, 241, 231, 0.72);
  border-left: 3px solid var(--erhai);
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--ink-700);
}

.page-contact .ct-coop__materials span {
  font-weight: 700;
  color: var(--ink-900);
}

/* ---------- 通栏留白带 ---------- */
.page-contact .ct-band {
  margin: 56px 0;
}

/* ---------- 订阅优先路径 ---------- */
.page-contact .ct-priority__grid {
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .ct-priority__lede {
  margin: 18px 0 22px;
  font-size: var(--step-0);
  line-height: 1.8;
  color: var(--text);
}

.page-contact .ct-list {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-contact .ct-list li {
  position: relative;
  padding-left: 20px;
  font-size: var(--step--1);
  line-height: 1.75;
  color: var(--text);
}

.page-contact .ct-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 9px;
  height: 9px;
  background: var(--orange);
  border-radius: 2px;
}

.page-contact .ct-priority__note {
  margin: 0;
  padding: 16px 18px;
  border: 1px dashed var(--erhai);
  border-radius: 4px;
  background: rgba(59, 124, 147, 0.07);
  font-size: var(--step--1);
  line-height: 1.75;
  color: var(--ink-700);
}

.page-contact .ct-problems {
  align-self: start;
}

.page-contact .ct-problems__list {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-contact .ct-problems__row {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ink-line);
}

.page-contact .ct-problems__row:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-contact .ct-problems__row dt {
  margin-bottom: 6px;
  font-size: var(--step-0);
  font-weight: 800;
  color: var(--paper-100);
}

.page-contact .ct-problems__row dd {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 自助入口 ---------- */
.page-contact .ct-help__grid {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .ct-help__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  background: var(--paper-100);
  border: 1px solid var(--line);
  border-radius: 4px;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-contact .ct-help__card:hover,
.page-contact .ct-help__card:focus-visible {
  border-color: var(--ink-700);
  background: var(--paper-200);
  transform: translateX(4px);
}

.page-contact .ct-help__tag {
  font-size: var(--step--2);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--erhai);
}

.page-contact .ct-help__title {
  font-size: var(--step-0);
  font-weight: 800;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-contact .ct-help__desc {
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--moss);
}

/* ---------- 收尾 ---------- */
.page-contact .ct-foot .lede {
  margin-top: 16px;
}

.page-contact .ct-foot__hand {
  margin-top: 22px;
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 720px) {
  .page-contact .ct-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .ct-coop__stream {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
    align-items: start;
  }

  .page-contact .ct-coop__block--b {
    margin-top: 48px;
  }

  .page-contact .ct-coop__block--c {
    grid-column: 1 / -1;
    margin-left: 12%;
    margin-right: 8%;
  }

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

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-contact .ct-head {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 72px;
    padding: 48px 0 12px;
    align-items: start;
  }

  .page-contact .ct-head__text {
    order: 1;
    padding-top: 34px;
  }

  .page-contact .ct-head__figure {
    order: 2;
    margin-top: -18px;
  }

  .page-contact .ct-grid {
    grid-template-columns: 1.35fr 1fr minmax(260px, 300px);
    grid-template-rows: auto auto;
    gap: 22px;
    align-items: start;
  }

  .page-contact .ct-card--wide {
    grid-column: 1 / 2;
    grid-row: 1 / 2;
    padding: 30px 28px;
  }

  .page-contact .ct-card[data-reveal]:nth-of-type(2) {
    grid-column: 2 / 3;
    grid-row: 1 / 2;
  }

  .page-contact .ct-card--addr {
    grid-column: 1 / 3;
    grid-row: 2 / 3;
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr) minmax(0, 1.4fr);
    grid-template-rows: auto auto auto;
    column-gap: 22px;
    align-items: start;
  }

  .page-contact .ct-card--addr .ct-card__icon {
    grid-row: 1 / 3;
    margin-bottom: 0;
  }

  .page-contact .ct-card--addr .ct-card__label {
    grid-column: 2 / 4;
    margin-bottom: 4px;
    align-self: end;
  }

  .page-contact .ct-card--addr .ct-card__addr {
    grid-column: 2 / 3;
    grid-row: 2 / 3;
    margin-bottom: 0;
  }

  .page-contact .ct-card--addr .ct-card__use {
    grid-column: 3 / 4;
    grid-row: 2 / 3;
  }

  .page-contact .ct-card--addr .ct-card__meta {
    grid-column: 3 / 4;
    grid-row: 3 / 4;
    padding-top: 0;
    border-top: none;
  }

  .page-contact .ct-panel {
    grid-column: 3 / 4;
    grid-row: 1 / 3;
    align-self: stretch;
    padding: 30px 24px;
  }

  .page-contact .ct-coop__stream {
    grid-template-columns: 1.1fr 1fr 1.15fr;
    gap: 40px;
  }

  .page-contact .ct-coop__block--a {
    margin-top: 0;
  }

  .page-contact .ct-coop__block--b {
    margin-top: 64px;
  }

  .page-contact .ct-coop__block--c {
    grid-column: auto;
    margin: 26px 0 0;
  }

  .page-contact .ct-priority__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, 340px);
    gap: 56px;
  }

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

  .page-contact .ct-band {
    margin: 72px 0;
  }
}