.page-contact {
  --ct-line: rgba(29, 74, 122, 0.42);
  --ct-glow: rgba(0, 229, 255, 0.16);
  --ct-card: rgba(15, 42, 77, 0.88);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(26px, 4vw, 44px) clamp(48px, 7vw, 88px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--ct-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--ct-line) 1px, transparent 1px);
  background-size: 76px 76px;
  opacity: 0.42;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 78% 4%, #000 0%, transparent 74%);
  mask-image: radial-gradient(ellipse 90% 80% at 78% 4%, #000 0%, transparent 74%);
}

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

.page-contact .crumb-sep {
  margin-inline: 8px;
  opacity: 0.55;
}

.page-contact .hero-head {
  margin-top: clamp(24px, 4vw, 44px);
  row-gap: clamp(18px, 2.4vw, 30px);
}

.page-contact .hero-title {
  margin: 14px 0 0;
  max-width: 16ch;
  font-size: clamp(36px, 6vw, 70px);
}

.page-contact .hero-lead {
  align-self: end;
}

.page-contact .hero-lead .lead {
  margin: 0;
  max-width: 40ch;
  color: var(--text-dark);
}

/* ---------- 渠道坐标卡 ---------- */

.page-contact .channel-zone {
  position: relative;
  margin-top: clamp(34px, 5vw, 60px);
  isolation: isolate;
}

.page-contact .channel-zone-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  border-radius: var(--notch);
  pointer-events: none;
  z-index: -1;
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 1.6vw, 20px);
}

.page-contact .channel-card {
  position: relative;
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--ct-card);
  border: 1px solid var(--rule-soft);
  border-radius: 0 var(--notch) 0 0;
  transition: transform 200ms var(--ease), border-color 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 34px;
  height: 2px;
  background: var(--cyan);
}

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

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

.page-contact .channel-key {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dark-dim);
  font-family: var(--font-mono);
}

.page-contact .channel-value {
  margin: 12px 0 14px;
  font-family: var(--font-mono);
  font-size: clamp(12.5px, 1.1vw, 15px);
  letter-spacing: 0.01em;
  line-height: 1.6;
  color: var(--cyan);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel-value--text {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.7;
  color: var(--fog);
}

.page-contact .channel-use {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-dark-dim);
}

/* ---------- 三步接入 ---------- */

.page-contact .steps-grid {
  row-gap: clamp(30px, 4vw, 48px);
}

.page-contact .steps-copy .h-section {
  margin: 12px 0 18px;
  max-width: 14ch;
}

.page-contact .steps-copy .prose {
  margin: 0 0 26px;
}

.page-contact .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(11, 31, 58, 0.14);
}

.page-contact .step-item {
  position: relative;
  padding: 20px 0 20px 46px;
  border-bottom: 1px solid rgba(11, 31, 58, 0.14);
  transition: opacity 200ms var(--ease);
}

.page-contact .step-item .index-num {
  position: absolute;
  left: 0;
  top: 22px;
}

.page-contact .step-item::after {
  content: "";
  position: absolute;
  left: 46px;
  bottom: -1px;
  width: 0;
  height: 1px;
  background: var(--signal);
  transition: width 280ms var(--ease);
}

.page-contact .step-title {
  margin: 0 0 6px;
  font-size: clamp(17px, 1.5vw, 20px);
  font-weight: 600;
  color: var(--text-light);
}

.page-contact .step-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-light-dim);
}

.page-contact .steps-visual {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-contact .figure-note {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-light-dim);
}

.page-contact .steps-visual .media-frame {
  width: 100%;
}

/* ---------- 工单提交 ---------- */

.page-contact .ticket-grid {
  row-gap: clamp(30px, 4vw, 48px);
}

.page-contact .ticket-copy .h-section {
  margin: 12px 0 18px;
  max-width: 15ch;
}

.page-contact .ticket-copy .prose {
  margin: 0 0 18px;
  color: var(--text-dark);
}

.page-contact .ticket-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dark-dim);
}

.page-contact .ticket-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-contact .ticket-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
  padding: clamp(16px, 1.8vw, 22px);
  border: 1px solid var(--rule-soft);
  border-left: 2px solid rgba(0, 229, 255, 0.45);
  border-radius: 0 var(--notch) 0 0;
  background: rgba(15, 42, 77, 0.42);
  transition: transform 200ms var(--ease), border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-contact .ticket-row .index-num {
  position: static;
  padding-top: 4px;
}

.page-contact .ticket-title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--fog);
}

.page-contact .ticket-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-dark-dim);
}

/* ---------- 响应节奏刻度带 ---------- */

.page-contact .response-band {
  padding-block: clamp(24px, 3.4vw, 40px);
}

.page-contact .response-band .scale-band-label {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
}

.page-contact .response-rail {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 2.6vw, 34px);
}

.page-contact .response-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 8px;
  padding-left: 14px;
  border-left: 1px solid var(--rule-soft);
}

.page-contact .response-num {
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1;
  color: var(--signal);
}

.page-contact .response-unit {
  font-size: 13px;
  color: var(--mist);
}

.page-contact .response-label {
  flex-basis: 100%;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--text-light-dim);
}

/* ---------- 合作与渠道 ---------- */

.page-contact .partner-grid {
  row-gap: clamp(30px, 4vw, 48px);
}

.page-contact .partner-copy .h-section {
  margin: 12px 0 18px;
  max-width: 15ch;
}

.page-contact .partner-copy .prose {
  margin: 0 0 18px;
}

.page-contact .partner-copy .prose a {
  color: #0d6b7d;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .partner-actions {
  margin-top: 26px;
  gap: 12px;
}

.page-contact .partner-panel {
  padding: clamp(22px, 2.8vw, 34px);
  background: #ffffff;
  border: 1px solid rgba(11, 31, 58, 0.12);
  border-radius: 0 var(--notch) 0 0;
  box-shadow: 0 18px 44px -32px rgba(11, 31, 58, 0.5);
}

.page-contact .partner-panel-title {
  margin: 0 0 22px;
  font-size: clamp(17px, 1.5vw, 20px);
  font-weight: 600;
  color: var(--text-light);
}

.page-contact .partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-contact .partner-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
}

.page-contact .partner-mark {
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  background: transparent;
}

.page-contact .partner-item h4 {
  margin: 0 0 5px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text-light);
}

.page-contact .partner-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-light-dim);
}

/* ---------- 结尾行动点 ---------- */

.page-contact .final-band {
  position: relative;
  overflow: hidden;
}

.page-contact .final-band::before {
  content: "";
  position: absolute;
  right: -10%;
  top: -40%;
  width: 62%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, var(--ct-glow) 0%, transparent 68%);
  pointer-events: none;
}

.page-contact .final-inner {
  position: relative;
  max-width: 62ch;
}

.page-contact .final-title {
  margin: 12px 0 20px;
}

.page-contact .final-lead {
  margin: 0 0 30px;
  max-width: 48ch;
  color: var(--text-dark);
}

.page-contact .final-actions {
  gap: 12px;
}

.page-contact .final-meta {
  margin: 26px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--text-dark-dim);
}

/* ---------- 悬停与焦点 ---------- */

@media (hover: hover) and (pointer: fine) {
  .page-contact .channel-card:hover {
    transform: translateY(-2px);
    border-color: rgba(0, 229, 255, 0.55);
    box-shadow: 0 22px 48px -34px rgba(0, 229, 255, 0.6);
  }

  .page-contact .ticket-row:hover {
    transform: translateY(-2px);
    border-left-color: var(--signal);
    background: rgba(15, 42, 77, 0.66);
  }

  .page-contact .step-list:hover .step-item {
    opacity: 0.5;
  }

  .page-contact .step-list .step-item:hover {
    opacity: 1;
  }

  .page-contact .step-item:hover::after {
    width: calc(100% - 46px);
  }
}

.page-contact a:focus-visible,
.page-contact .btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-contact .channel-grid {
    grid-template-columns: 1.25fr 0.85fr 1.15fr;
  }

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

@media (min-width: 980px) {
  .page-contact .channel-card {
    min-height: 100%;
  }

  .page-contact .steps-visual .media-frame {
    position: sticky;
    top: calc(var(--header-space) + 24px);
  }
}

@media (max-width: 759px) {
  .page-contact .response-rail {
    gap: 22px 16px;
  }

  .page-contact .response-num {
    font-size: 30px;
  }

  .page-contact .channel-zone-bg {
    opacity: 0.1;
  }

  .page-contact .final-inner {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .ticket-row,
  .page-contact .step-item,
  .page-contact .step-item::after {
    transition: none;
  }
}