.page-contact {
  --ct-line: rgba(169, 199, 217, 0.20);
  --ct-line-strong: rgba(169, 199, 217, 0.38);
  --ct-panel-bg: linear-gradient(180deg, rgba(11, 27, 51, 0.92) 0%, rgba(7, 16, 31, 0.96) 100%);
  color: var(--c-mist);
  font-family: var(--font-sans);
  padding-bottom: clamp(40px, 7vw, 88px);
  background-image:
    radial-gradient(1100px 480px at 86% -10%, rgba(56, 242, 208, 0.10), transparent 60%),
    radial-gradient(820px 420px at 0% 16%, rgba(229, 50, 45, 0.09), transparent 62%);
  background-repeat: no-repeat;
}

.page-contact .breadcrumb {
  padding-top: clamp(18px, 3vw, 28px);
}

/* ============ 首屏 ============ */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(18px, 3vw, 32px) 0 clamp(30px, 5vw, 56px);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, var(--ct-line) 1px, transparent 1px),
    linear-gradient(180deg, var(--ct-line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.38;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 82%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 82%);
  pointer-events: none;
}

.page-contact .contact-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-contact .contact-hero-copy h1 {
  margin: 10px 0 0;
  font-size: clamp(2rem, 5.6vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-contact .contact-hero-copy h1 em {
  font-style: italic;
  color: var(--c-cyan);
}

.page-contact .contact-lede {
  margin: 18px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--c-pale);
  max-width: 46ch;
}

.page-contact .contact-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-contact .contact-hero-meta {
  list-style: none;
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--ct-line);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 14px 18px;
}

.page-contact .contact-hero-meta li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-contact .contact-hero-meta .mono {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-steel);
  text-transform: uppercase;
}

.page-contact .contact-hero-meta strong {
  font-family: var(--font-mono);
  font-size: clamp(15px, 2vw, 18px);
  color: var(--c-mist);
  font-weight: 600;
}

.page-contact .contact-hero-visual {
  margin: 0;
  position: relative;
  border: 1px solid var(--ct-line-strong);
  background: var(--c-midnight);
  clip-path: polygon(0 3%, 100% 0, 100% 97%, 0 100%);
}

.page-contact .contact-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  max-width: 100%;
}

/* ============ 通用版块头 ============ */
.page-contact .contact-section {
  padding: clamp(30px, 5vw, 56px) 0 0;
}

.page-contact .contact-head {
  border-top: 1px solid var(--ct-line);
  padding-top: 18px;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-contact .contact-head--tight {
  margin-bottom: 16px;
}

.page-contact .contact-head h2 {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  font-weight: 800;
}

.page-contact .contact-head p {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-pale);
}

/* ============ 通道总览 ============ */
.page-contact .channel-grid {
  display: grid;
  gap: var(--gap);
  grid-template-columns: 1fr;
}

.page-contact .channel-card {
  position: relative;
  padding: 22px 20px 20px;
  background: var(--ct-panel-bg);
  border: 1px solid var(--ct-line);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--c-cyan);
}

.page-contact .channel-card:nth-child(2)::before {
  background: var(--c-orange);
}

.page-contact .channel-card:nth-child(3)::before {
  background: var(--c-green);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-3px);
  border-color: rgba(56, 242, 208, 0.55);
}

.page-contact .channel-num {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-steel);
}

.page-contact .channel-card h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
}

.page-contact .channel-for {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-pale);
}

.page-contact .channel-points {
  list-style: none;
  margin: 2px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-contact .channel-points li {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-mist);
  padding-left: 12px;
  position: relative;
  word-break: break-word;
}

.page-contact .channel-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  background: var(--c-cyan);
}

.page-contact .channel-link {
  margin-top: auto;
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 208, 0.35);
  align-self: flex-start;
}

.page-contact .channel-link:hover,
.page-contact .channel-link:focus-visible {
  border-bottom-color: var(--c-cyan);
}

/* ============ 联系方式 + 流程分栏 ============ */
.page-contact .contact-main-grid {
  display: grid;
  gap: clamp(24px, 4vw, 36px);
  grid-template-columns: 1fr;
}

.page-contact .contact-card {
  background: var(--ct-panel-bg);
  border: 1px solid var(--ct-line-strong);
  padding: 22px 20px 18px;
  position: relative;
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 44px;
  height: 44px;
  border-top: 1px solid var(--c-cyan);
  border-right: 1px solid var(--c-cyan);
  opacity: 0.55;
  pointer-events: none;
}

.page-contact .contact-card h2 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 800;
}

.page-contact .contact-card-intro {
  margin: 8px 0 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-steel);
}

.page-contact .contact-row {
  padding: 14px 0;
  border-top: 1px dashed var(--ct-line);
  display: grid;
  gap: 6px;
  justify-items: start;
}

.page-contact .contact-label {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-steel);
  text-transform: uppercase;
}

.page-contact .contact-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(14px, 2.2vw, 16px);
  line-height: 1.5;
  color: var(--c-mist);
  word-break: break-all;
}

.page-contact .contact-value--address {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.7;
  word-break: break-word;
  color: var(--c-pale);
}

.page-contact .contact-hint {
  margin: 0;
  font-size: 12px;
  line-height: 1.65;
  color: var(--c-steel);
}

.page-contact .copy-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
  background: transparent;
  border: 1px solid rgba(56, 242, 208, 0.42);
  padding: 6px 10px;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  background: rgba(56, 242, 208, 0.14);
  outline: 1px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-contact .copy-btn[data-copy-state="ok"] {
  color: var(--c-midnight);
  background: var(--c-green);
  border-color: var(--c-green);
}

.page-contact .copy-btn--wide {
  padding: 9px 14px;
}

.page-contact .contact-map {
  margin-top: 16px;
  min-height: 100px;
  padding: 12px 14px;
  display: flex;
  align-items: flex-end;
  border: 1px dashed var(--ct-line-strong);
  background-color: rgba(7, 16, 31, 0.6);
  background-image:
    linear-gradient(90deg, rgba(56, 242, 208, 0.12) 1px, transparent 1px),
    linear-gradient(180deg, rgba(56, 242, 208, 0.12) 1px, transparent 1px);
  background-size: 24px 24px;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .contact-map:hover,
.page-contact .contact-map:focus-within {
  border-color: var(--c-cyan);
  background-color: rgba(56, 242, 208, 0.06);
}

.page-contact .contact-map p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--c-pale);
}

/* ============ 流程与标签切换 ============ */
.page-contact .contact-flow-figure {
  margin: 0 0 18px;
  border: 1px solid var(--ct-line);
  background: var(--c-midnight);
}

.page-contact .contact-flow-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .contact-tabs {
  border: 1px solid var(--ct-line);
  background: var(--ct-panel-bg);
}

.page-contact .contact-tabs .tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .contact-tabs .tab {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 8px 12px;
  border: 1px solid var(--ct-line);
  background: transparent;
  color: var(--c-pale);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .contact-tabs .tab:hover,
.page-contact .contact-tabs .tab:focus-visible {
  color: var(--c-mist);
  border-color: var(--ct-line-strong);
}

.page-contact .contact-tabs .tab[aria-selected="true"] {
  color: var(--c-mist);
  background: rgba(229, 50, 45, 0.16);
  border-color: rgba(229, 50, 45, 0.65);
  box-shadow: inset 0 -2px 0 var(--c-red);
}

.page-contact .contact-tabs .tabpanel[hidden] {
  display: none;
}

.page-contact .contact-tabs .tabpanel {
  padding: 20px 18px 22px;
}

.page-contact .contact-tabs .tabpanel h3 {
  margin: 0 0 12px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-mist);
}

.page-contact .contact-tabs .tabpanel:focus-visible {
  outline: 1px solid var(--c-cyan);
  outline-offset: -3px;
}

.page-contact .contact-need-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 14px;
  border-left: 2px solid rgba(56, 242, 208, 0.45);
  display: grid;
  gap: 8px;
}

.page-contact .contact-need-list li {
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-pale);
}

.page-contact .contact-timeline {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-contact .contact-timeline .timeline-item {
  position: relative;
  padding-left: 22px;
}

.page-contact .contact-timeline .timeline-item::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 14px;
  bottom: -14px;
  width: 1px;
  background: var(--ct-line-strong);
}

.page-contact .contact-timeline .timeline-item:last-child::before {
  display: none;
}

.page-contact .contact-timeline .timeline-dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 0 3px rgba(56, 242, 208, 0.16);
}

.page-contact .contact-timeline h4 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-mist);
}

.page-contact .contact-timeline p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-steel);
}

.page-contact .contact-inline-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--ct-line);
}

/* ============ 合作 ============ */
.page-contact .coop-grid {
  display: grid;
  gap: var(--gap);
  grid-template-columns: 1fr;
}

.page-contact .coop-card {
  padding: 20px;
  border: 1px solid var(--ct-line);
  background: var(--ct-panel-bg);
  display: grid;
  gap: 10px;
  align-content: start;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .coop-card:hover,
.page-contact .coop-card:focus-within {
  transform: translateY(-3px);
  border-color: rgba(56, 242, 208, 0.5);
}

.page-contact .coop-card .tag {
  justify-self: start;
}

.page-contact .coop-card h3 {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 700;
}

.page-contact .coop-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-pale);
}

/* ============ 响应说明 ============ */
.page-contact .sla-grid {
  display: grid;
  gap: 1px;
  grid-template-columns: 1fr;
  background: var(--ct-line);
  border: 1px solid var(--ct-line);
}

.page-contact .sla-item {
  background: var(--c-navy);
  padding: 20px 18px;
  display: grid;
  gap: 6px;
  align-content: start;
}

.page-contact .sla-num {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  line-height: 1;
  color: var(--c-cyan);
  letter-spacing: -0.02em;
}

.page-contact .sla-num--time {
  font-size: clamp(1.15rem, 3.2vw, 1.55rem);
  letter-spacing: 0;
  color: var(--c-mist);
}

.page-contact .sla-label {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-steel);
  margin: 0;
}

.page-contact .sla-text {
  margin: 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--c-pale);
}

.page-contact .sla-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-steel);
  max-width: 70ch;
}

/* ============ 结尾引导 ============ */
.page-contact .contact-cta {
  margin-top: clamp(32px, 6vw, 64px);
  padding: clamp(26px, 4vw, 44px) 0;
  background:
    linear-gradient(115deg, rgba(229, 50, 45, 0.16) 0%, rgba(7, 16, 31, 0) 46%),
    var(--c-midnight);
  border-top: 1px solid var(--ct-line-strong);
  border-bottom: 1px solid var(--ct-line);
  clip-path: polygon(0 0, 100% 2.5%, 100% 100%, 0 97.5%);
}

.page-contact .contact-cta-inner {
  display: grid;
  gap: 20px;
}

.page-contact .contact-cta h2 {
  margin: 8px 0 0;
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  line-height: 1.3;
  font-weight: 800;
}

.page-contact .contact-cta p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-pale);
  max-width: 56ch;
}

.page-contact .contact-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: start;
}

/* ============ 响应式 ============ */
@media (min-width: 620px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-cta-inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
  }

  .page-contact .contact-cta-links {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-main-grid {
    grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-contact .sla-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .coop-card,
  .page-contact .copy-btn,
  .page-contact .contact-map {
    transition: none;
  }

  .page-contact .channel-card:hover,
  .page-contact .coop-card:hover {
    transform: none;
  }
}