.page-contact {
  --ct-ink: #12161C;
  --ct-paper-muted: #6E6353;
  --ct-paper-body: #2A2E35;
  --ct-line: rgba(51, 230, 210, 0.18);
  --ct-line-soft: rgba(154, 176, 198, 0.22);
  position: relative;
  overflow-x: clip;
  background:
    radial-gradient(120% 70% at 92% 3%, rgba(51, 230, 210, 0.12), transparent 58%),
    linear-gradient(180deg, #0A1A2F 0%, #050A14 44%, #050A14 100%);
  color: var(--paper-warm);
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.85;
}

.page-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(154, 176, 198, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(154, 176, 198, 0.06) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 60%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 60%);
}

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

.page-contact .breadcrumbs {
  padding-top: 26px;
  font-size: 13px;
}

.page-contact .eyebrow {
  margin: 0 0 4px;
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-contact h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.2vw, 36px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 10px 0 14px;
  color: var(--paper-warm);
}

/* ---------- 首屏 ---------- */

.ct-hero {
  position: relative;
  padding: 34px 0 74px;
}

.ct-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(158deg, rgba(51, 230, 210, 0.16) 0%, rgba(10, 26, 47, 0.78) 44%, rgba(5, 10, 20, 0) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 62%, 34% 100%, 0 90%);
}

.ct-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
  align-items: end;
}

.ct-hero-main h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(29px, 5vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 14px 0 20px;
  max-width: 19ch;
  color: var(--paper-warm);
}

.ct-lede {
  margin: 0;
  max-width: 42em;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--mist-gray);
}

.ct-hero-side {
  border: 1px solid var(--ct-line);
  border-radius: var(--r-soft);
  background: linear-gradient(180deg, rgba(18, 41, 63, 0.88), rgba(10, 26, 47, 0.62));
  padding: 22px 20px;
}

.ct-side-label {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--neon-cyan);
}

.ct-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.ct-steps li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--paper-warm);
}

.ct-step-idx {
  display: block;
  font-size: 11.5px;
  line-height: 1.7;
  text-align: center;
  color: var(--amber-gold);
  border: 1px solid rgba(255, 180, 84, 0.42);
  border-radius: var(--r-pill);
}

.ct-side-foot {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--ct-line-soft);
  font-size: 13px;
  line-height: 1.72;
  color: var(--mist-gray);
}

/* ---------- 渠道 + 上报清单 ---------- */

.ct-core {
  padding: 6px 0 78px;
}

.ct-core-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

.ct-sub {
  margin: 0 0 4px;
  max-width: 44em;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--mist-gray);
}

.ct-channel-list {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.ct-channel {
  position: relative;
  overflow: hidden;
  padding: 20px 22px 22px;
  border: 1px solid var(--paper-edge);
  border-radius: var(--r-paper);
  background: var(--paper-warm);
  color: var(--ct-ink);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.3);
}

.ct-channel::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: linear-gradient(180deg, var(--ink-slate), rgba(18, 41, 63, 0.08));
}

.ct-channel-no {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--ct-paper-muted);
}

.ct-channel-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--ink-black);
}

.ct-channel-value {
  margin: 0 0 12px;
  padding: 10px 12px;
  border: 1px dashed #C7B597;
  border-radius: 10px;
  background: rgba(18, 22, 28, 0.05);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-black);
  word-break: break-word;
}

.ct-channel-value--addr {
  font-size: 13.5px;
  line-height: 1.78;
}

.ct-channel-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: #554A3B;
}

.ct-report {
  padding: 26px 24px 28px;
  border: 1px solid var(--paper-edge);
  border-radius: var(--r-card);
  background: var(--paper-warm);
  color: var(--ct-ink);
  box-shadow: 0 26px 64px rgba(0, 0, 0, 0.34);
}

.ct-report h2 {
  margin: 0 0 12px;
  font-size: clamp(21px, 2.6vw, 28px);
  color: var(--ink-black);
}

.ct-report-lede {
  margin: 0 0 22px;
  font-size: 14.5px;
  line-height: 1.82;
  color: #554A3B;
}

.ct-report-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.ct-report-col-title {
  position: relative;
  margin: 0 0 12px;
  padding-left: 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--ink-black);
}

.ct-report-col-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.52em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.ct-report-col-title--yes::before {
  background: var(--jade-signal);
}

.ct-report-col-title--no::before {
  background: var(--alert-ember);
}

.ct-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.ct-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ct-paper-body);
}

.ct-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1px;
  background: #9A8E78;
}

.ct-list--deny li::before {
  width: 11px;
  background: var(--alert-ember);
}

.ct-figure {
  margin: 24px 0 0;
}

.ct-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--ct-line);
  border-radius: var(--r-soft);
  background: rgba(10, 26, 47, 0.6);
}

.ct-figure figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--mist-gray);
}

/* ---------- 仿冒识别 ---------- */

.ct-decoy {
  padding: 0 0 78px;
}

.ct-accordion {
  display: grid;
  gap: 14px;
  margin-top: 8px;
}

.page-contact .accordion-item {
  overflow: hidden;
  border: 1px solid var(--ct-line);
  border-radius: var(--r-soft);
  background: linear-gradient(160deg, rgba(18, 41, 63, 0.72), rgba(10, 26, 47, 0.5));
}

.page-contact .accordion-heading {
  margin: 0;
  font-size: inherit;
}

.page-contact .accordion-trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 18px 20px;
  border: 0;
  background: transparent;
  color: var(--paper-warm);
  font-family: var(--font-mono);
  font-size: 15.5px;
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .accordion-trigger:hover {
  background: rgba(51, 230, 210, 0.07);
}

.page-contact .accordion-trigger:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: -2px;
}

.page-contact .accordion-trigger[aria-expanded="true"] {
  color: var(--neon-cyan);
}

.ct-acc-idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 27px;
  height: 27px;
  border: 1px solid var(--ct-line);
  border-radius: 50%;
  font-size: 12px;
  color: var(--neon-cyan);
}

.ct-acc-mark {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.ct-acc-mark::before,
.ct-acc-mark::after {
  content: "";
  position: absolute;
  background: var(--neon-cyan);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.ct-acc-mark::before {
  left: 0;
  top: 6.2px;
  width: 14px;
  height: 1.5px;
}

.ct-acc-mark::after {
  left: 6.2px;
  top: 0;
  width: 1.5px;
  height: 14px;
}

.page-contact .accordion-trigger[aria-expanded="true"] .ct-acc-mark::after {
  transform: scaleY(0);
}

.page-contact .accordion-panel {
  padding: 0 20px 20px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist-gray);
}

.page-contact .accordion-panel p {
  margin: 0;
}

/* ---------- 备案与站点信息 ---------- */

.ct-registry {
  padding: 0 0 78px;
}

.ct-registry-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: center;
  padding: 26px 22px 28px;
  border: 1px solid var(--ct-line);
  border-radius: var(--r-card);
  background: linear-gradient(150deg, rgba(18, 41, 63, 0.94), rgba(10, 26, 47, 0.68));
  overflow: hidden;
}

.ct-reg-list {
  margin: 20px 0 0;
  display: grid;
  border-top: 1px solid var(--ct-line);
}

.ct-reg-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3px;
  padding: 13px 0;
  border-bottom: 1px solid var(--ct-line);
}

.ct-reg-row dt {
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--mist-gray);
}

.ct-reg-row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper-warm);
  word-break: break-word;
}

.ct-reg-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--amber-gold);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist-gray);
}

.ct-registry-art {
  margin: 0;
}

.ct-registry-art img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-soft);
  opacity: 0.82;
}

/* ---------- 延伸入口 ---------- */

.ct-next {
  padding: 0 0 90px;
}

.ct-next-title {
  margin: 0 0 22px;
  font-size: clamp(20px, 2.6vw, 28px);
}

.ct-next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.ct-next-list li {
  display: block;
}

.ct-next-link {
  display: block;
  height: 100%;
  padding: 18px 20px;
  border: 1px solid var(--ct-line);
  border-radius: var(--r-soft);
  background: rgba(18, 41, 63, 0.45);
  color: var(--paper-warm);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.ct-next-link:hover {
  border-color: var(--hairline-strong);
  background: rgba(18, 41, 63, 0.82);
  transform: translateY(-2px);
}

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

.ct-next-name {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--paper-warm);
}

.ct-next-desc {
  display: block;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist-gray);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .ct-reg-row {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }

  .page-contact .accordion-panel {
    padding: 0 22px 22px 62px;
  }
}

@media (min-width: 720px) {
  .ct-next-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .ct-report-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
  }
}

@media (min-width: 900px) {
  .ct-hero {
    padding: 46px 0 92px;
  }

  .ct-hero-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.9fr);
    gap: 52px;
  }

  .ct-registry-panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 42px;
    padding: 38px 40px;
  }
}

@media (min-width: 1000px) {
  .ct-core-grid {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
    gap: 52px;
    align-items: start;
  }

  .ct-report {
    padding: 30px 30px 32px;
  }

  .page-contact .accordion-trigger {
    padding: 20px 24px;
  }

  .page-contact .accordion-panel {
    padding: 0 24px 24px 66px;
  }
}

@media (min-width: 1120px) {
  .ct-next-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-contact {
    font-size: 15.5px;
  }

  .ct-hero {
    padding: 22px 0 56px;
  }

  .ct-channel {
    padding: 18px 18px 20px;
  }

  .ct-report {
    padding: 22px 17px 24px;
  }

  .ct-registry-panel {
    padding: 22px 18px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact * {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
  }

  .ct-next-link:hover {
    transform: none;
  }
}