.page-contact {
  --ct-cut: 18px;
  --ct-gap: clamp(16px, 2.4vw, 28px);
  --ct-rise: 4px;
  --ct-line: rgba(126, 154, 146, .22);
  display: block;
}

.page-contact .ct-crumb-now {
  color: var(--ds-warm);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  max-width: 56rem;
  padding: clamp(30px, 5.5vw, 68px) 0 clamp(18px, 3vw, 30px);
}

.page-contact .ct-kicker {
  margin: 0 0 18px;
  font-family: var(--ds-font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ds-cyan);
}

.page-contact .ct-hero__title {
  margin: 0 0 22px;
  font-family: var(--ds-font-head);
  font-weight: 900;
  font-size: clamp(2.3rem, 6vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
  color: var(--ds-warm);
}

.page-contact .ct-hero__lede {
  margin: 0 0 26px;
  max-width: 42em;
  font-size: 17px;
  line-height: 1.7;
  color: rgba(245, 241, 230, .84);
}

.page-contact .ct-hero__points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.page-contact .ct-hero__point {
  position: relative;
  padding-left: 15px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ds-moss);
}

.page-contact .ct-hero__point::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 6px;
  height: 6px;
  background: var(--ds-orange);
  transform: rotate(45deg);
}

.page-contact .ct-hero__media {
  margin: 0 0 clamp(30px, 4.5vw, 56px);
}

/* ---------- 通道 + 清单 ---------- */
.page-contact .ct-head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .ct-channels__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ct-gap);
}

.page-contact .ct-channels__col {
  display: grid;
  gap: var(--ct-gap);
  align-content: start;
}

.page-contact .ct-channel {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px);
  background: linear-gradient(145deg, #13322B 0%, #0C231E 100%);
  clip-path: polygon(var(--ct-cut) 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%, 0 var(--ct-cut));
  transition: transform .24s ease, background .24s ease;
}

.page-contact .ct-channel::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(20px, 2.6vw, 30px);
  width: 36px;
  height: 3px;
  background: var(--ds-teal);
}

.page-contact .ct-channel--lead::before {
  width: 72px;
  background: var(--ds-orange);
}

.page-contact .ct-channel:hover,
.page-contact .ct-channel:focus-within {
  transform: translateY(calc(var(--ct-rise) * -1));
  background: linear-gradient(145deg, #173A32 0%, #0E2A24 100%);
}

.page-contact .ct-channel:focus-visible {
  outline: 2px solid var(--ds-cyan);
  outline-offset: 2px;
}

.page-contact .ct-channel__plate {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 11px;
  font-family: var(--ds-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ds-ink);
  background: var(--ds-paper);
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
}

.page-contact .ct-channel--lead .ct-channel__plate {
  background: var(--ds-orange);
}

.page-contact .ct-channel__title {
  margin: 0 0 12px;
  font-family: var(--ds-font-head);
  font-weight: 800;
  font-size: clamp(1.25rem, 2.6vw, 1.62rem);
  line-height: 1.25;
  color: var(--ds-warm);
}

.page-contact .ct-channel__desc {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.7;
  color: rgba(245, 241, 230, .78);
}

.page-contact .ct-channel__value {
  margin: 0 0 16px;
  font-family: var(--ds-font-mono);
  font-size: clamp(1.02rem, 2.4vw, 1.38rem);
  line-height: 1.45;
  letter-spacing: .01em;
  color: var(--ds-cyan);
  overflow-wrap: anywhere;
}

.page-contact .ct-channel__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
  opacity: .55;
  transition: opacity .24s ease;
}

.page-contact .ct-channel:hover .ct-channel__tags,
.page-contact .ct-channel:focus-within .ct-channel__tags {
  opacity: 1;
}

.page-contact .ct-channel__media {
  margin: 0 0 18px;
}

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

/* ---------- 提交前清单面板 ---------- */
.page-contact .ct-prep {
  padding: clamp(22px, 3vw, 36px);
}

.page-contact .ct-prep__num {
  margin: 0 0 12px;
  font-family: var(--ds-font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--ds-teal);
}

.page-contact .ct-prep__title {
  margin: 0 0 12px;
  font-family: var(--ds-font-head);
  font-weight: 800;
  font-size: clamp(1.35rem, 2.8vw, 1.8rem);
  line-height: 1.2;
  color: var(--ds-ink);
}

.page-contact .ct-prep__desc {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(11, 31, 26, .74);
}

.page-contact .ct-prep__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-prep__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 15px 0;
  border-top: 1px solid rgba(11, 31, 26, .14);
}

.page-contact .ct-prep__item:last-child {
  border-bottom: 1px solid rgba(11, 31, 26, .14);
}

.page-contact .ct-prep__idx {
  padding-top: 3px;
  font-family: var(--ds-font-mono);
  font-size: 13px;
  line-height: 1.5;
  color: var(--ds-teal);
}

.page-contact .ct-prep__label {
  margin: 0 0 4px;
  font-family: var(--ds-font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.45;
  color: var(--ds-ink);
}

.page-contact .ct-prep__sub {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(11, 31, 26, .68);
}

.page-contact .ct-prep__foot {
  margin: 20px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(11, 31, 26, .74);
}

.page-contact .ct-prep__foot a {
  color: var(--ds-teal);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-contact .ct-prep__foot a:hover {
  color: var(--ds-orange);
}

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

.page-contact .ct-partner__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
}

.page-contact .ct-partner__intro p {
  margin: 0 0 16px;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(245, 241, 230, .8);
}

.page-contact .ct-partner__hint {
  font-size: 14px;
  color: var(--ds-moss);
}

.page-contact .ct-partner__hint a {
  color: var(--ds-cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-contact .ct-partner__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-partner__item {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-partner__item:first-child {
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-partner__mark {
  width: 10px;
  height: 10px;
  margin-top: 7px;
  background: var(--ds-cyan);
  transform: rotate(45deg);
}

.page-contact .ct-partner__name {
  margin: 0 0 5px;
  font-family: var(--ds-font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  color: var(--ds-warm);
}

.page-contact .ct-partner__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(245, 241, 230, .72);
}

/* ---------- 夜间值班条 ---------- */
.page-contact .ct-night {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  margin-top: clamp(34px, 5vw, 64px);
  padding: clamp(18px, 2.4vw, 26px) clamp(18px, 2.6vw, 30px);
  background: rgba(6, 18, 15, .88);
  border-left: 3px solid var(--ds-orange);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-contact .ct-night__dot {
  width: 10px;
  height: 10px;
  margin-top: 6px;
  border-radius: 50%;
  background: var(--ds-orange);
  box-shadow: 0 0 0 4px rgba(255, 138, 61, .18);
}

.page-contact .ct-night__title {
  margin: 0 0 8px;
  font-family: var(--ds-font-head);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: .01em;
  color: var(--ds-orange);
}

.page-contact .ct-night__text {
  margin: 0;
  max-width: 62em;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 241, 230, .82);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 960px) {
  .page-contact .ct-channels__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
    column-gap: clamp(24px, 3.4vw, 44px);
  }

  .page-contact .ct-prep {
    position: sticky;
    top: calc(var(--ds-header-h) + 22px);
  }
}

@media (min-width: 880px) {
  .page-contact .ct-partner__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    column-gap: clamp(26px, 4vw, 60px);
  }
}

/* ---------- 触屏与偏好 ---------- */
@media (hover: none) {
  .page-contact .ct-channel__tags {
    opacity: 1;
  }
}

@media (max-width: 420px) {
  .page-contact .ct-prep__item {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 10px;
  }

  .page-contact .ct-channel__value {
    font-size: .98rem;
  }
}

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

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