.page-contact {
  --ct-gap: clamp(18px, 3.4vw, 40px);
  --ct-hair: 1px solid var(--line-soft);
  color: var(--white);
}

.page-contact .wrap {
  padding-inline: var(--gut);
}

.page-contact .crumbs {
  padding-top: clamp(16px, 2.6vw, 30px);
}

.page-contact .sec {
  padding-block: clamp(34px, 5.6vw, 76px);
}

.page-contact .sec__head {
  margin-bottom: clamp(22px, 3.2vw, 42px);
}

/* ---------- 首屏 ---------- */

.ct-hero {
  border-bottom: var(--ct-hair);
  padding-block: clamp(6px, 1.4vw, 16px) clamp(32px, 6vw, 72px);
}

.ct-hero__grid {
  display: grid;
  gap: var(--ct-gap);
}

.ct-hero__kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--cyan);
  text-transform: uppercase;
}

.ct-hero__title {
  margin-top: 16px;
  font-size: clamp(29px, 6.4vw, 60px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0.01em;
  max-width: 13em;
}

.ct-hero__lede {
  margin-top: 20px;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--muted);
  max-width: 30em;
}

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

.ct-hero__meta {
  margin-top: 22px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.ct-hero__art {
  position: relative;
}

.ct-hero__art::before {
  content: "";
  position: absolute;
  top: -12px;
  left: -12px;
  width: 46px;
  height: 46px;
  border-top: 2px solid var(--cyan);
  border-left: 2px solid var(--cyan);
  pointer-events: none;
}

/* ---------- 通用双栏 ---------- */

.ct-channels__grid,
.ct-brief__grid {
  display: grid;
  gap: var(--ct-gap);
}

/* ---------- 01 联络渠道 ---------- */

.ct-channel__list {
  display: grid;
  gap: 14px;
  align-content: start;
}

.ct-channel {
  position: relative;
  display: grid;
  gap: 10px;
  padding: clamp(18px, 2.6vw, 26px);
  border: var(--ct-hair);
  border-left: 2px solid var(--cyan);
  background: linear-gradient(158deg, rgba(14, 42, 66, 0.92), rgba(7, 26, 43, 0.94));
  box-shadow: var(--shadow-card);
}

.ct-channel__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.ct-channel__name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
}

.ct-channel__value {
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.5vw, 22px);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--mist);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.ct-channel__value--text {
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.55;
}

.ct-channel__desc {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 40ch;
}

.ct-channel__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 4px;
}

.ct-copy-status {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

/* ---------- 02 反馈信息 ---------- */

.ct-brief__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  align-content: start;
}

.ct-brief__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: var(--ct-hair);
}

.ct-brief__item:first-child {
  padding-top: 0;
}

.ct-brief__k {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--cyan);
  padding-top: 4px;
}

.ct-brief__name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}

.ct-brief__text {
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 42ch;
}

.ct-brief__side {
  border-top: 2px solid var(--pulse);
  padding-top: 16px;
  align-self: start;
}

.ct-brief__side-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--pulse);
}

.ct-brief__side-text {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 34ch;
}

.ct-brief__side .btn {
  margin-top: 18px;
}

/* ---------- 03 合作方向 ---------- */

.ct-partner__grid {
  display: grid;
  gap: 14px;
}

.ct-partner__card {
  border: var(--ct-hair);
  background: linear-gradient(166deg, rgba(14, 42, 66, 0.86), rgba(7, 26, 43, 0.92));
  padding: clamp(16px, 2.4vw, 24px);
}

.ct-partner__summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  cursor: pointer;
  list-style: none;
}

.ct-partner__summary::-webkit-details-marker {
  display: none;
}

.ct-partner__summary::after {
  content: "＋";
  flex: none;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan);
}

.ct-partner__card[open] .ct-partner__summary::after {
  content: "－";
}

.ct-partner__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.ct-partner__name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}

.ct-partner__body {
  margin-top: 14px;
  padding-top: 14px;
  border-top: var(--ct-hair);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 44ch;
}

.ct-partner__prep {
  margin-top: clamp(24px, 3.4vw, 44px);
  padding: clamp(18px, 2.6vw, 28px);
  border: var(--ct-hair);
  background: linear-gradient(112deg, rgba(75, 46, 131, 0.34), rgba(3, 11, 20, 0.9) 62%);
}

.ct-partner__prep-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.ct-partner__prep-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.ct-partner__prep-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--white);
}

.ct-partner__prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1px;
  background: var(--cyan);
}

.ct-partner__prep-note {
  margin-top: 18px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 52ch;
}

.ct-partner__prep-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 210, 0.4);
}

.ct-partner__prep-note a:hover,
.ct-partner__prep-note a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 04 辽宁本地 ---------- */

.ct-local {
  position: relative;
  overflow: hidden;
  border-top: var(--ct-hair);
  border-bottom: var(--ct-hair);
  padding-block: clamp(32px, 5vw, 64px);
}

.ct-local::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(118deg, rgba(75, 46, 131, 0.44) 0%, rgba(3, 11, 20, 0) 48%, rgba(47, 227, 210, 0.16) 100%);
  clip-path: polygon(0 8%, 100% 0, 100% 92%, 0 100%);
  pointer-events: none;
}

.ct-local__inner {
  position: relative;
  z-index: 1;
}

.ct-local__grid {
  display: grid;
  gap: var(--ct-gap);
}

.ct-local__title {
  margin-top: 14px;
  font-size: clamp(23px, 3.6vw, 38px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: 0.01em;
  max-width: 15em;
}

.ct-local__text {
  margin-top: 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 34em;
}

.ct-local__links {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.ct-local__facts {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: var(--ct-hair);
  align-self: start;
}

.ct-local__fact {
  background: rgba(7, 26, 43, 0.9);
  padding: 18px 16px;
}

.ct-local__fact dt {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.ct-local__fact dd {
  margin: 10px 0 0;
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 700;
  color: var(--cyan);
}

/* ---------- 05 响应节奏 ---------- */

.ct-sla__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.ct-sla__item {
  position: relative;
  padding: 0 0 28px 26px;
  border-left: 1px solid var(--line-soft);
}

.ct-sla__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.ct-sla__item::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 4px;
  width: 11px;
  height: 2px;
  background: var(--cyan);
}

.ct-sla__time {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.ct-sla__name {
  margin-top: 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}

.ct-sla__text {
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 40ch;
}

/* ---------- 06 检查清单 ---------- */

.ct-check__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  max-width: 700px;
}

.ct-check__item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 0;
  border-bottom: var(--ct-hair);
}

.ct-check__item:first-child {
  border-top: var(--ct-hair);
}

.ct-check__box {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin: 4px 0 0;
  border: 1px solid var(--line);
  background: var(--night);
  cursor: pointer;
}

.ct-check__box:checked {
  border-color: var(--cyan);
  background: rgba(47, 227, 210, 0.14);
}

.ct-check__box:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(40deg);
}

.ct-check__box:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.ct-check__text {
  font-size: 15px;
  line-height: 1.72;
  color: var(--white);
  cursor: pointer;
}

.ct-check__outro {
  margin-top: 22px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 46ch;
}

/* ---------- 响应式 ---------- */

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

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

  .ct-sla__item {
    padding: 0 24px 30px 26px;
  }

  .ct-sla__item:nth-last-child(-n + 2) {
    padding-bottom: 0;
  }
}

@media (min-width: 900px) {
  .ct-hero__grid,
  .ct-channels__grid,
  .ct-brief__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: clamp(30px, 4.6vw, 68px);
  }

  .ct-brief__grid {
    grid-template-columns: 8fr 4fr;
  }

  .ct-partner__grid {
    grid-template-columns: 1.28fr 1fr;
    gap: 18px;
    align-items: start;
    padding-bottom: 30px;
  }

  .ct-partner__card:nth-child(even) {
    transform: translateY(30px);
  }

  .ct-local__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: clamp(30px, 4.6vw, 68px);
  }

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

  .ct-sla__item {
    padding: 26px 22px 0 0;
    border-left: 0;
    border-top: 1px solid var(--line-soft);
  }

  .ct-sla__item:last-child {
    padding-bottom: 0;
    border-left-color: transparent;
    border-top-color: var(--line-soft);
  }

  .ct-sla__item::before {
    left: 0;
    top: -1px;
    width: 2px;
    height: 12px;
  }

  .ct-sla__item:nth-last-child(-n + 2) {
    padding-bottom: 0;
  }
}

@media (min-width: 1180px) {
  .ct-channel__list {
    gap: 16px;
  }

  .ct-hero__art {
    margin-top: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact * {
    transition: none !important;
    animation: none !important;
  }

  .ct-partner__card:nth-child(even) {
    transform: none;
  }
}