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

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.page-contact .ct-hero::before {
  content: "";
  position: absolute;
  inset: -170px -30% auto -30%;
  height: 470px;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 78% at 24% 16%, rgba(108, 43, 217, .44), transparent 68%),
    radial-gradient(42% 62% at 84% 2%, rgba(0, 229, 255, .15), transparent 72%);
}

.page-contact h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  color: var(--text);
  margin: 14px 0 0;
}

.page-contact h2 {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 4vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.22;
  color: var(--text);
  margin: 10px 0 0;
}

.page-contact h3 {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.4;
  color: var(--text);
  margin: 0;
}

.page-contact .ct-hero__grid {
  display: grid;
  gap: 28px;
  margin-top: 20px;
}

.page-contact .ct-hero__copy .lede {
  margin-top: 16px;
}

.page-contact .ct-hero__copy .tag-row {
  margin-top: 20px;
}

.page-contact .ct-hero__media {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-cyan);
  background: var(--surface);
  box-shadow: var(--shadow-dock);
  overflow: hidden;
}

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

/* ---------- 联系方式 ---------- */
.page-contact .ct-channels__head {
  max-width: 620px;
  margin-bottom: 28px;
}

.page-contact .ct-channels__head .note {
  margin-top: 12px;
}

.page-contact .ct-channel {
  display: grid;
  gap: 16px;
  padding-bottom: 4px;
}

.page-contact .ct-channel__card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 24px 22px 26px;
  border-radius: var(--ct-radius);
  border: 1px solid var(--card-border);
  background: linear-gradient(158deg, var(--surface) 0%, var(--bg-soft) 100%);
  box-shadow: var(--shadow-card);
}

.page-contact .ct-channel__card--addr {
  border-color: var(--line-cyan);
}

.page-contact .ct-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.02rem, 3vw, 1.24rem);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--data);
  margin: 0;
}

.page-contact .ct-value--mail {
  overflow-wrap: anywhere;
  text-shadow: 0 0 18px var(--data-glow);
}

.page-contact .ct-value--addr {
  font-family: var(--font-body);
  font-size: 1.04rem;
  font-weight: 600;
  color: var(--text);
  text-shadow: none;
}

.page-contact .ct-note {
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text-3);
  margin: 0;
}

/* ---------- 合作方向 ---------- */
.page-contact .ct-partners__grid {
  display: grid;
  gap: 32px;
}

.page-contact .ct-partners__main .lede {
  margin-top: 14px;
}

.page-contact .ct-dirs {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.page-contact .ct-dir {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  padding: 16px 18px;
  transition: border-color .2s ease, background-color .2s ease;
}

.page-contact .ct-dir:hover {
  border-color: var(--line-brand);
}

.page-contact .ct-dir[open] {
  border-color: var(--line-cyan);
  background: var(--surface);
}

.page-contact .ct-dir summary {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text);
}

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

.page-contact .ct-dir summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--data);
  line-height: 1;
}

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

.page-contact .ct-dir__icon {
  flex: none;
  color: var(--lilac);
}

.page-contact .ct-dir[open] .ct-dir__icon {
  color: var(--data);
}

.page-contact .ct-dir__name {
  min-width: 0;
}

.page-contact .ct-dir__tag {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--text-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 2px 9px;
}

.page-contact .ct-dir__body {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.page-contact .ct-dir__body p {
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--text-3);
  margin: 0;
}

.page-contact .ct-dir__body p + p {
  margin-top: 10px;
}

.page-contact .ct-partners__media {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-brand);
  background: var(--ink-soft);
  overflow: hidden;
}

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

/* ---------- 合作流程 ---------- */
.page-contact .ct-flow__head {
  max-width: 560px;
  margin-bottom: 6px;
}

.page-contact .ct-steps {
  list-style: none;
  display: grid;
  gap: 16px;
  margin: 30px 0 0;
  padding: 0;
}

.page-contact .ct-step {
  position: relative;
  padding: 22px 20px 24px;
  border-radius: var(--ct-radius);
  border: 1px dashed var(--line);
  background: var(--bg-soft);
}

.page-contact .ct-step__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--lilac);
  margin-bottom: 10px;
}

.page-contact .ct-step h3 + p {
  margin-top: 8px;
}

.page-contact .ct-step p {
  font-size: 0.92rem;
  line-height: 1.76;
  color: var(--text-3);
  margin: 0;
}

/* ---------- 反馈通道 ---------- */
.page-contact .ct-feedback__panel {
  display: grid;
  gap: 26px;
  padding: 30px 24px 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-cyan);
  background:
    linear-gradient(126deg, rgba(63, 21, 128, .58) 0%, rgba(11, 14, 20, .92) 62%),
    var(--surface);
  box-shadow: var(--shadow-dock);
}

.page-contact .ct-feedback__copy p {
  font-size: 0.97rem;
  line-height: 1.78;
  color: var(--text-2);
  margin: 14px 0 0;
}

.page-contact .ct-feedback__copy h2 {
  font-size: clamp(1.3rem, 3.6vw, 1.85rem);
}

.page-contact .ct-feedback__copy .btn-row {
  margin-top: 22px;
}

.page-contact .ct-feedback__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .ct-feedback__list li {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(11, 14, 20, .58);
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--text-3);
}

.page-contact .ct-feedback__key {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--data);
}

/* ---------- 协作方式 ---------- */
.page-contact .ct-team .lede {
  margin-top: 14px;
  max-width: 700px;
}

.page-contact .ct-role-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .ct-role {
  display: grid;
  gap: 8px;
  padding: 20px 20px 22px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--brand);
  background: var(--bg-soft);
}

.page-contact .ct-role__key {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-contact .ct-role__body h3 {
  margin: 2px 0 0;
}

.page-contact .ct-role__body p {
  font-size: 0.92rem;
  line-height: 1.76;
  color: var(--text-3);
  margin: 8px 0 0;
}

.page-contact .ct-team__note {
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--text-3);
}

/* ---------- 后续入口 ---------- */
.page-contact .ct-next__bar {
  display: grid;
  gap: 22px;
  padding: 28px 24px 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--bg-soft);
}

.page-contact .ct-next__links {
  display: grid;
  gap: 10px;
}

.page-contact .ct-next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}

.page-contact .ct-next__link:hover,
.page-contact .ct-next__link:focus-visible {
  border-color: var(--line-cyan);
  background: var(--surface-2);
  color: var(--data);
}

.page-contact .ct-next__arrow {
  font-family: var(--font-mono);
  color: var(--data);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-contact .ct-channel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

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

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

  .page-contact .ct-feedback__panel {
    padding: 36px 32px 38px;
  }

  .page-contact .ct-next__bar {
    padding: 32px 30px 30px;
  }

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

@media (min-width: 900px) {
  .page-contact .ct-role {
    grid-template-columns: 88px minmax(0, 1fr);
    align-items: start;
    gap: 18px;
  }

  .page-contact .ct-role__key {
    padding-top: 4px;
  }
}

@media (min-width: 960px) {
  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
    gap: 44px;
  }

  .page-contact .ct-hero__copy {
    padding-bottom: 10px;
  }

  .page-contact .ct-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
  }

  .page-contact .ct-step {
    padding: 24px 20px 26px;
  }

  .page-contact .ct-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -19px;
    width: 12px;
    border-top: 2px dashed var(--line-cyan);
  }
}

@media (min-width: 1024px) {
  .page-contact .ct-partners__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    gap: 44px;
    align-items: start;
  }

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

  .page-contact .ct-feedback__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
    align-items: center;
    gap: 40px;
  }

  .page-contact .ct-next__bar {
    grid-template-columns: minmax(0, 0.66fr) minmax(0, 1fr);
    align-items: center;
    gap: 36px;
  }
}

@media (min-width: 1080px) {
  .page-contact .ct-channel {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
    padding-bottom: 22px;
  }

  .page-contact .ct-channel__card:nth-child(2) {
    transform: translateY(20px);
  }
}

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

  .page-contact .ct-channel__card:nth-child(2) {
    transform: none;
  }
}