.page-contact {
  --ct-edge: rgba(28, 26, 22, .16);
  --ct-edge-dark: rgba(245, 238, 226, .22);
  --ct-radius: 14px;
  --ct-gap: clamp(16px, 2.4vw, 26px);
  --ct-soft: rgba(28, 26, 22, .68);
}

.page-contact .ct-crumbs {
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-contact .ct-lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(16.5px, 1.5vw, 18.5px);
  line-height: 1.85;
  color: var(--ink-900);
}

.page-contact .ct-sub {
  margin: 18px 0 0;
  max-width: 60ch;
  padding-left: 14px;
  border-left: 2px solid var(--ochre-500);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ct-soft);
}

.page-contact .ct-jump {
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--ct-edge);
  border-radius: var(--ct-radius);
  background:
    linear-gradient(158deg, rgba(176, 115, 39, .12), rgba(226, 85, 31, .06) 58%, rgba(245, 238, 226, 0) 100%);
}

.page-contact .ct-jump__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ember-700);
}

.page-contact .ct-jump__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-contact .ct-jump__list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--ct-edge);
  font-size: 15px;
  color: var(--ink-900);
  text-decoration: none;
  transition: color .18s ease, border-color .18s ease;
}

.page-contact .ct-jump__list li:last-child a {
  border-bottom: 0;
}

.page-contact .ct-jump__list a span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ash-500);
}

.page-contact .ct-jump__list a:hover,
.page-contact .ct-jump__list a:focus-visible {
  color: var(--ember-700);
  border-color: var(--ember-600);
}

.page-contact .ct-banner {
  margin: clamp(30px, 4.4vw, 52px) 0 0;
}

.page-contact .ct-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 600;
  object-fit: cover;
  border: 1px solid var(--ct-edge);
  border-radius: var(--ct-radius);
}

.page-contact .ct-banner figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--ash-500);
}

/* ---------- 深色渠道区 ---------- */
.page-contact .section--dark {
  background:
    radial-gradient(120% 112% at 86% 0%, rgba(28, 74, 59, .62), rgba(14, 42, 34, 0) 62%),
    var(--pitch-900);
}

.page-contact .ct-labelDark {
  color: var(--cyan-400);
}

.page-contact .ct-onDark {
  color: var(--sand-050);
}

.page-contact .ct-darklede {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(245, 238, 226, .74);
}

.page-contact .ct-channels {
  display: grid;
  gap: var(--ct-gap);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-contact .ct-channel {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--ct-edge-dark);
  border-radius: var(--ct-radius);
  background: linear-gradient(178deg, rgba(28, 74, 59, .55), rgba(14, 42, 34, .12));
  transition: border-color .18s ease, transform .18s ease;
}

.page-contact .ct-channel:hover {
  border-color: var(--ember-600);
  transform: translateY(-2px);
}

.page-contact .ct-channel__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan-400);
}

.page-contact .ct-channel__value {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(16px, 1.9vw, 19px);
  line-height: 1.5;
  letter-spacing: .01em;
  color: var(--white);
  word-break: break-all;
  user-select: all;
  -webkit-user-select: all;
}

.page-contact .ct-channel__desc {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 238, 226, .72);
}

.page-contact .ct-channel__hint {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--ct-edge-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: rgba(245, 238, 226, .5);
}

.page-contact .ct-timing {
  display: grid;
  gap: 16px;
  margin-top: clamp(24px, 3.4vw, 36px);
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px dashed var(--ct-edge-dark);
  border-radius: var(--ct-radius);
}

.page-contact .ct-timing__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(38px, 6vw, 62px);
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--ember-600);
}

.page-contact .ct-timing__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .ct-timing__desc {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 238, 226, .72);
}

/* ---------- 三类合作方向 ---------- */
.page-contact .ct-switch {
  position: relative;
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-contact .ct-switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.page-contact .ct-switch__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-contact .ct-switch__tab {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border: 1px solid var(--ct-edge);
  border-radius: 10px;
  background: rgba(255, 255, 255, .42);
  font-size: 14.5px;
  color: var(--ink-900);
  cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}

.page-contact .ct-switch__tab:hover {
  border-color: var(--clay-700);
}

.page-contact .ct-switch__tab .num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ash-500);
}

.page-contact #ct-dir-1:checked ~ .ct-switch__tabs .ct-switch__tab[for="ct-dir-1"],
.page-contact #ct-dir-2:checked ~ .ct-switch__tabs .ct-switch__tab[for="ct-dir-2"],
.page-contact #ct-dir-3:checked ~ .ct-switch__tabs .ct-switch__tab[for="ct-dir-3"] {
  background: var(--ink-900);
  border-color: var(--ink-900);
  color: var(--sand-050);
}

.page-contact #ct-dir-1:checked ~ .ct-switch__tabs .ct-switch__tab[for="ct-dir-1"] .num,
.page-contact #ct-dir-2:checked ~ .ct-switch__tabs .ct-switch__tab[for="ct-dir-2"] .num,
.page-contact #ct-dir-3:checked ~ .ct-switch__tabs .ct-switch__tab[for="ct-dir-3"] .num {
  color: var(--cyan-400);
}

.page-contact .ct-switch__input:focus-visible ~ .ct-switch__tabs .ct-switch__tab {
  outline: none;
}

.page-contact .ct-switch__panel {
  display: none;
}

.page-contact #ct-dir-1:checked ~ .ct-switch__panels > .ct-switch__panel:nth-child(1),
.page-contact #ct-dir-2:checked ~ .ct-switch__panels > .ct-switch__panel:nth-child(2),
.page-contact #ct-dir-3:checked ~ .ct-switch__panels > .ct-switch__panel:nth-child(3) {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  grid-template-columns: repeat(auto-fit, minmax(238px, 1fr));
  animation: ct-panel-in .16s ease-out;
}

@keyframes ct-panel-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.page-contact .ct-panelblock {
  padding-top: 14px;
  border-top: 2px solid var(--clay-700);
}

.page-contact .ct-panelblock .label {
  color: var(--ember-700);
  letter-spacing: .08em;
}

.page-contact .ct-panelblock p {
  margin: 10px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-900);
}

.page-contact .ct-list {
  margin: 10px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink-900);
}

/* ---------- 纠错清单 ---------- */
.page-contact .ct-fields {
  margin-top: clamp(24px, 3.4vw, 36px);
  border: 1px solid var(--ct-edge);
  border-radius: var(--ct-radius);
  overflow: hidden;
}

.page-contact .ct-field {
  display: grid;
  gap: 7px;
  padding: 16px clamp(16px, 2.2vw, 24px);
  border-bottom: 1px solid var(--ct-edge);
  background: rgba(255, 255, 255, .38);
}

.page-contact .ct-field:last-child {
  border-bottom: 0;
}

.page-contact .ct-field:hover {
  background: rgba(231, 218, 195, .5);
}

.page-contact .ct-field__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--ember-700);
}

.page-contact .ct-field__val {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-900);
}

.page-contact .ct-fold {
  margin-top: clamp(22px, 3vw, 32px);
  border: 1px solid var(--ct-edge);
  border-radius: var(--ct-radius);
  background: var(--sand-100);
}

.page-contact .ct-fold > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px clamp(16px, 2.2vw, 24px);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-900);
  cursor: pointer;
  list-style: none;
}

.page-contact .ct-fold > summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-fold > summary::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ember-700);
}

.page-contact .ct-fold[open] > summary::after {
  content: "－";
}

.page-contact .ct-fold__body {
  padding: 0 clamp(16px, 2.2vw, 24px) clamp(18px, 2.6vw, 26px);
}

.page-contact .ct-steps {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 12px;
}

.page-contact .ct-steps li {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-900);
}

.page-contact .ct-steps strong {
  display: inline-block;
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: .04em;
  color: var(--ember-700);
}

.page-contact .ct-fold__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--ct-edge);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ct-soft);
}

.page-contact .ct-fold__note a,
.page-contact .ct-footnote a {
  color: var(--ember-700);
}

/* ---------- 流程轴 ---------- */
.page-contact .ct-flowwrap {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(24px, 3.8vw, 40px);
}

.page-contact .ct-flow {
  position: relative;
  margin: 0;
  padding: 6px 0 6px 30px;
  list-style: none;
}

.page-contact .ct-flow::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--ochre-500), var(--ember-600) 55%, var(--cyan-400));
}

.page-contact .ct-flow__step {
  position: relative;
  padding-bottom: clamp(22px, 3vw, 34px);
}

.page-contact .ct-flow__step:last-child {
  padding-bottom: 0;
}

.page-contact .ct-flow__step::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 4px;
  width: 14px;
  height: 14px;
  background: var(--sand-050);
  border: 2px solid var(--clay-700);
  transform: rotate(45deg);
  transition: border-color .18s ease, transform .18s ease;
}

.page-contact .ct-flow__step:hover::before {
  border-color: var(--ember-600);
  transform: rotate(45deg) scale(1.12);
}

.page-contact .ct-flow__num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--ember-700);
}

.page-contact .ct-flow__title {
  margin: 0 0 8px;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-contact .ct-flow__step p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ct-soft);
}

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

.page-contact .ct-flowfig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 700;
  object-fit: cover;
  border: 1px solid var(--ct-edge);
  border-radius: var(--ct-radius);
}

.page-contact .ct-flowfig figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: .03em;
  color: var(--ash-500);
}

/* ---------- 受理边界 ---------- */
.page-contact .ct-limits {
  display: grid;
  gap: 16px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .ct-limit {
  padding: 2px 0 2px 16px;
  border-left: 3px solid var(--ember-600);
}

.page-contact .ct-limit h3 {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink-900);
}

.page-contact .ct-limit p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ct-soft);
}

.page-contact .ct-footnote {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--ct-edge);
  font-size: 15px;
  line-height: 1.85;
  color: var(--ct-soft);
}

/* ---------- 相关入口 ---------- */
.page-contact .ct-links {
  margin: clamp(20px, 2.8vw, 28px) 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .ct-links a {
  display: inline-block;
  padding: 10px 16px;
  border: 1px solid var(--ct-edge);
  border-radius: 999px;
  font-size: 14px;
  color: var(--ink-900);
  text-decoration: none;
  transition: border-color .18s ease, color .18s ease;
}

.page-contact .ct-links a:hover,
.page-contact .ct-links a:focus-visible {
  border-color: var(--ember-600);
  color: var(--ember-700);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .ct-field {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }

  .page-contact .ct-timing {
    grid-template-columns: 140px minmax(0, 1fr);
    align-items: center;
  }

  .page-contact .ct-limits {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 30px;
  }
}

@media (min-width: 860px) {
  .page-contact .ct-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    gap: clamp(32px, 4.5vw, 64px);
  }

  .page-contact .ct-flowwrap {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-contact .ct-flowfig {
    position: sticky;
    top: 110px;
  }
}

@media (max-width: 420px) {
  .page-contact .ct-channel__value {
    font-size: 15px;
  }

  .page-contact .ct-switch__tab {
    padding: 10px 13px;
    font-size: 13.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-channel,
  .page-contact .ct-switch__tab,
  .page-contact .ct-jump__list a,
  .page-contact .ct-links a,
  .page-contact .ct-flow__step::before {
    transition: none;
  }

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

  .page-contact .ct-flow__step:hover::before {
    transform: rotate(45deg);
  }

  .page-contact #ct-dir-1:checked ~ .ct-switch__panels > .ct-switch__panel:nth-child(1),
  .page-contact #ct-dir-2:checked ~ .ct-switch__panels > .ct-switch__panel:nth-child(2),
  .page-contact #ct-dir-3:checked ~ .ct-switch__panels > .ct-switch__panel:nth-child(3) {
    animation: none;
  }
}