.page-contact {
  background: var(--c-ink);
  color: var(--c-fog);
  font-family: var(--f-sans);
  font-size: 17px;
  line-height: 1.85;
  overflow-x: hidden;
}

.page-contact .contact-link {
  color: var(--c-orange);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--t-base) var(--ease), color var(--t-base) var(--ease);
}

.page-contact .contact-link:hover {
  border-bottom-color: var(--c-orange);
}

.js .page-contact [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
}

.page-contact [data-reveal] {
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}

.page-contact [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding: 24px 0 48px;
  background: linear-gradient(180deg, var(--c-ink-soft), var(--c-ink));
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  right: -22%;
  bottom: -46%;
  width: 76%;
  height: 130%;
  background: var(--c-charcoal);
  border-left: 1px solid var(--line-soft);
  transform: rotate(13deg);
  opacity: .8;
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: 22px;
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: 26px;
}

.page-contact .contact-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-orange);
}

.page-contact .contact-hero h1 {
  margin: 0 0 18px;
  font-size: 33px;
  line-height: 1.28;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--c-paper);
}

.page-contact .contact-hero__text {
  margin: 0 0 26px;
  max-width: 36em;
  font-size: 16px;
  color: var(--fog-70);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .contact-hero__panel {
  padding: 22px 20px;
  background: var(--c-charcoal);
  border: 1px solid var(--line);
  border-top: 2px solid var(--c-brass);
}

.page-contact .contact-hero__panel-title {
  margin: 0 0 16px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--fog-50);
}

.page-contact .contact-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-contact .contact-hero__panel-note {
  margin: 0;
  font-size: 14px;
  color: var(--fog-50);
}

/* ---------- 01 分流 + 联络牌 ---------- */

.page-contact .contact-split__grid {
  display: grid;
  gap: 34px;
  margin-top: 12px;
}

.page-contact .route-set {
  display: grid;
  gap: 12px;
}

.page-contact .route-card {
  position: relative;
}

.page-contact .route-card__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-contact .route-card__label {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 4px 14px;
  padding: 16px 18px;
  background: var(--c-charcoal);
  border: 1px solid var(--line);
  border-radius: var(--r);
  cursor: pointer;
  transition: border-color var(--t-base) var(--ease), background-color var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}

.page-contact .route-card__label:hover {
  border-color: var(--c-cyan);
  transform: translateY(-2px);
}

.page-contact .route-card__input:focus-visible + .route-card__label {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-contact .route-card__input:checked + .route-card__label {
  border-color: var(--c-orange);
  background-color: var(--orange-soft);
}

.page-contact .route-card__num {
  grid-row: span 2;
  font-family: var(--f-mono);
  font-size: 20px;
  line-height: 1.35;
  color: var(--c-brass);
  transition: color var(--t-fast) var(--ease);
}

.page-contact .route-card__input:checked + .route-card__label .route-card__num {
  color: var(--c-orange);
}

.page-contact .route-card__title {
  font-size: 19px;
  font-weight: 800;
  color: var(--c-paper);
  line-height: 1.4;
}

.page-contact .route-card__desc {
  grid-column: 2;
  font-size: 15px;
  color: var(--fog-70);
}

.page-contact .route-card__detail {
  display: none;
  padding: 14px 18px 16px;
  background: var(--c-ink-soft);
  border: 1px dashed var(--line);
  border-top: none;
}

.page-contact .route-card__input:checked ~ .route-card__detail {
  display: block;
}

.page-contact .route-card__handling {
  margin: 0;
  font-size: 15px;
  color: var(--fog-70);
}

.page-contact .route-card__needs {
  display: grid;
  gap: 6px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .route-card__needs li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  color: var(--fog-70);
}

.page-contact .route-card__needs li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .8em;
  width: 7px;
  height: 1px;
  background: var(--c-cyan);
}

.page-contact .route-card__detail .route-card__handling + .route-card__needs {
  margin-top: 10px;
}

.page-contact .plaque {
  padding: 22px 20px 0;
  background: var(--c-charcoal);
  border: 1px solid var(--c-brass);
  border-radius: var(--r);
  box-shadow: 10px 12px 0 0 var(--c-shadow);
  overflow: hidden;
}

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

.page-contact .plaque__num {
  display: block;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-orange);
}

.page-contact .plaque__title {
  margin: 6px 0 0;
  font-size: 21px;
  font-weight: 800;
  color: var(--c-paper);
  line-height: 1.4;
}

.page-contact .plaque__list {
  margin: 0;
}

.page-contact .plaque__row {
  padding: 14px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.page-contact .plaque__key {
  margin-bottom: 4px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--fog-50);
}

.page-contact .plaque__value {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-paper);
}

.page-contact .plaque__value--mono {
  font-family: var(--f-mono);
  font-size: 15px;
  color: var(--c-cyan);
  word-break: break-all;
}

.page-contact .plaque__note {
  margin: 16px 0 0;
  font-size: 14px;
  color: var(--fog-70);
}

.page-contact .plaque__figure {
  margin: 20px -20px 0;
}

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

/* ---------- 02 准备材料 ---------- */

.page-contact .contact-prep .section-head {
  margin-bottom: 28px;
}

.page-contact .prep-grid {
  display: grid;
  gap: 12px;
}

.page-contact .prep-item {
  padding: 20px 18px;
  background: var(--c-charcoal);
  border: 1px solid var(--line);
  border-top: 2px solid var(--c-brass);
  transition: border-color var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}

.page-contact .prep-item:hover {
  border-color: var(--c-cyan);
  border-top-color: var(--c-cyan);
  transform: translateY(-2px);
}

.page-contact .prep-item__num {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-orange);
}

.page-contact .prep-item__title {
  margin: 8px 0 6px;
  font-size: 18px;
  font-weight: 800;
  color: var(--c-paper);
  line-height: 1.45;
}

.page-contact .prep-item__text {
  margin: 0;
  font-size: 15px;
  color: var(--fog-70);
}

.page-contact .prep-foot {
  margin: 22px 0 0;
  font-size: 15px;
  color: var(--fog-50);
}

/* ---------- 03 回复与顺序 ---------- */

.page-contact .contact-response__grid {
  display: grid;
  gap: 30px;
}

.page-contact .contact-response__text {
  margin: 0 0 16px;
  max-width: 38em;
  font-size: 16px;
  color: var(--fog-70);
}

.page-contact .contact-response__list-title {
  margin: 0 0 10px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-cyan);
}

.page-contact .priority-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: pr;
  border-top: 1px solid var(--line);
}

.page-contact .priority-list li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 4px 14px;
  padding: 14px 0;
  font-size: 16px;
  color: var(--c-paper);
  border-bottom: 1px dashed var(--line-soft);
  counter-increment: pr;
}

.page-contact .priority-list li::before {
  content: counter(pr, decimal-leading-zero);
  font-family: var(--f-mono);
  font-size: 14px;
  color: var(--c-cyan);
}

/* ---------- 04 内蒙古节点 ---------- */

.page-contact .contact-node .section-head {
  margin-bottom: 26px;
}

.page-contact .contact-node__cover {
  margin: 0 0 26px;
}

.page-contact .contact-node__cover img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-contact .contact-node__caption {
  margin-top: 10px;
  padding-left: 14px;
  border-left: 2px solid var(--c-brass);
  font-size: 14px;
  color: var(--fog-50);
}

.page-contact .contact-node__body p {
  margin: 0 0 16px;
  max-width: 38em;
  font-size: 16px;
  color: var(--fog-70);
}

.page-contact .contact-node__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 05 合作方向 ---------- */

.page-contact .contact-coop .section-head {
  margin-bottom: 26px;
}

.page-contact .coop-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--c-brass);
}

.page-contact .coop-row {
  display: grid;
  gap: 6px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition: background-color var(--t-base) var(--ease);
}

.page-contact .coop-row:hover {
  background-color: rgba(58, 211, 192, .06);
}

.page-contact .coop-row__num {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-orange);
}

.page-contact .coop-row__title {
  margin: 0;
  font-size: 21px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--c-paper);
}

.page-contact .coop-row__text {
  margin: 0;
  font-size: 15px;
  color: var(--fog-70);
}

.page-contact .coop-foot {
  margin: 24px 0 0;
  font-size: 15px;
  color: var(--fog-50);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-contact .contact-hero {
    padding: 32px 0 56px;
  }

  .page-contact .contact-hero h1 {
    font-size: 42px;
  }

  .page-contact .prep-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-contact .coop-row {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 6px 20px;
    padding: 26px 0;
  }

  .page-contact .coop-row__num {
    grid-row: span 2;
    padding-top: 6px;
  }

  .page-contact .coop-row__title,
  .page-contact .coop-row__text {
    grid-column: 2;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-hero {
    padding: 40px 0 72px;
  }

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

  .page-contact .contact-hero h1 {
    font-size: 50px;
  }

  .page-contact .route-card__label {
    grid-template-columns: 48px 1fr;
    padding: 18px 22px;
  }

  .page-contact .route-card__detail {
    padding: 16px 22px 20px;
  }

  .page-contact .contact-response__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .contact-node__body {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 48px;
  }

  .page-contact .contact-node__body p {
    max-width: none;
  }
}

@media (min-width: 1120px) {
  .page-contact .contact-hero h1 {
    font-size: 58px;
  }

  .page-contact .contact-split__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: start;
  }

  .page-contact .contact-split__right {
    position: sticky;
    top: 96px;
  }

  .page-contact .prep-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .coop-row {
    grid-template-columns: 90px minmax(0, 260px) minmax(0, 1fr);
    gap: 0 32px;
    align-items: baseline;
  }

  .page-contact .coop-row__num {
    grid-row: auto;
    padding-top: 0;
  }

  .page-contact .coop-row__title,
  .page-contact .coop-row__text {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact [data-reveal],
  .js .page-contact [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-contact .route-card__label,
  .page-contact .prep-item,
  .page-contact .coop-row {
    transition: none;
  }

  .page-contact .route-card__label:hover,
  .page-contact .prep-item:hover {
    transform: none;
  }
}