/* ========== 联系通道页专属样式 ========== */
.page-contact {
  --contact-card-max: 1120px;
  --contact-radius-lg: 22px;
  --contact-radius-md: 14px;
  --contact-glass-card: linear-gradient(145deg, rgba(17, 24, 39, 0.8), rgba(17, 24, 39, 0.55));
  position: relative;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 背景数据流 */
.page-contact .contact-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 55% 40% at 80% 15%, rgba(0, 191, 255, 0.1), transparent 70%),
    radial-gradient(ellipse 45% 35% at 10% 65%, rgba(57, 255, 136, 0.08), transparent 70%);
}

.page-contact .contact-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(156, 163, 175, 0.16) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.45;
  animation: contact-grid-flow 24s linear infinite;
}

.page-contact .contact-bg::after {
  content: "";
  position: absolute;
  top: -15%;
  width: 140px;
  height: 45%;
  background: linear-gradient(180deg, transparent, rgba(0, 191, 255, 0.1), transparent);
  transform: skewX(-16deg);
  filter: blur(18px);
  animation: contact-beam-scan 12s ease-in-out infinite;
}

@keyframes contact-grid-flow {
  from { background-position: 0 0; }
  to { background-position: 0 26px; }
}

@keyframes contact-beam-scan {
  0%, 100% { left: -8%; }
  50% { left: 68%; }
}

/* 内容容器 */
.page-contact .contact-wrap {
  position: relative;
  z-index: 1;
  max-width: var(--contact-card-max);
  margin: 0 auto;
  padding: 32px 20px 72px;
}

@media (min-width: 900px) {
  .page-contact .contact-wrap {
    padding: 52px 24px 96px;
  }
}

/* 首屏标题区 */
.page-contact .contact-hero {
  margin: 18px 0 34px;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(1.9rem, 4.5vw, 3.2rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 12px 0 14px;
  max-width: 14em;
}

.page-contact .contact-lead {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 44em;
  margin-top: 14px;
}

/* 联系卡片：玻璃拟态 */
.page-contact .contact-card {
  display: grid;
  grid-template-columns: 1fr;
  border-radius: var(--contact-radius-lg);
  overflow: hidden;
  background: var(--contact-glass-card);
  border: 1px solid rgba(255, 255, 255, 0.09);
  box-shadow: 0 28px 64px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

@media (min-width: 900px) {
  .page-contact .contact-card {
    grid-template-columns: 1.05fr 0.95fr;
    min-height: 540px;
  }
}

/* 左列：联系渠道列表 */
.page-contact .contact-card-info {
  padding: 28px 20px;
  display: grid;
  gap: 18px;
  align-content: start;
}

@media (min-width: 640px) {
  .page-contact .contact-card-info {
    padding: 38px 32px;
    gap: 22px;
  }
}

.page-contact .channel-item {
  position: relative;
  padding: 18px 18px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  border-radius: var(--contact-radius-md);
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.page-contact .channel-item:hover {
  border-color: rgba(0, 191, 255, 0.38);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.22);
}

.page-contact .channel-index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--neon);
  display: block;
  margin-bottom: 6px;
}

.page-contact .channel-label {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
  margin-bottom: 8px;
}

.page-contact .channel-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 1.8vw, 1.22rem);
  color: var(--electric);
  text-decoration: none;
  word-break: break-all;
  line-height: 1.4;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}

.page-contact a.channel-value:hover {
  color: var(--neon);
  text-shadow: 0 0 14px rgba(57, 255, 136, 0.4);
}

.page-contact .channel-desc {
  margin-top: 10px;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.7;
}

/* 右列：通讯网络视觉 */
.page-contact .contact-card-visual {
  position: relative;
  min-height: 280px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 20px;
}

.page-contact .contact-network-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.38;
  mix-blend-mode: screen;
  transition: opacity 0.4s ease;
}

.page-contact .contact-card-visual:hover .contact-network-img {
  opacity: 0.5;
}

.page-contact .contact-card-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(10, 14, 23, 0.55) 100%);
  pointer-events: none;
}

.page-contact .contact-visual-meta {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink);
  letter-spacing: 0.14em;
  padding: 8px 12px;
  background: rgba(17, 24, 39, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 40px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.page-contact .contact-visual-meta .meta-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 8px var(--neon);
  animation: contact-pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes contact-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.8); }
}

/* 沟通说明 */
.page-contact .communication-note {
  position: relative;
  margin: 40px 0 44px;
  padding: 30px 26px 24px;
  background: rgba(255, 255, 255, 0.03);
  border-top: 1px solid rgba(57, 255, 136, 0.3);
  border-bottom: 1px solid rgba(0, 191, 255, 0.2);
  border-radius: var(--contact-radius-md);
  display: flex;
  flex-direction: column;
}

.page-contact .note-mark {
  font-family: Georgia, serif;
  font-size: 3.2rem;
  line-height: 0.8;
  color: var(--neon);
  margin-bottom: 10px;
}

.page-contact .communication-note blockquote {
  margin: 0;
}

.page-contact .communication-note blockquote p {
  font-size: clamp(1.1rem, 2.2vw, 1.5rem);
  line-height: 1.7;
  font-family: var(--font-head);
  font-weight: 500;
  color: var(--ink);
  max-width: 26em;
}

.page-contact .note-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 18px;
  gap: 12px;
  flex-wrap: wrap;
}

.page-contact .note-source {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.page-contact .note-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--electric);
  letter-spacing: 0.12em;
  padding: 4px 10px;
  border: 1px solid rgba(0, 191, 255, 0.22);
  border-radius: 40px;
}

/* 辅助支持区 */
.page-contact .contact-assist {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: 28px 24px;
  margin: 0;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-radius: var(--contact-radius-md);
}

@media (min-width: 760px) {
  .page-contact .contact-assist {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 32px 36px;
    gap: 24px;
  }
}

.page-contact .assist-main h2 {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 8px;
}

.page-contact .assist-main p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.75;
  max-width: 46em;
}

.page-contact .assist-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.page-contact .assist-side {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.8;
  margin: 0;
}

@media (min-width: 760px) {
  .page-contact .assist-side {
    border-left: 1px solid var(--line);
    padding-left: 22px;
    max-width: 230px;
  }
}

.page-contact .assist-side a {
  color: var(--electric);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-contact .assist-side a:hover {
  color: var(--neon);
}

/* 底部城市横幅 */
.page-contact .city-banner {
  position: relative;
  margin-top: 48px;
  border-radius: var(--contact-radius-lg);
  overflow: hidden;
  min-height: 220px;
  display: flex;
  align-items: flex-end;
}

.page-contact .city-banner-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
}

.page-contact .city-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(10, 14, 23, 0.8) 100%);
}

.page-contact .city-banner-message {
  position: relative;
  z-index: 1;
  padding: 22px 20px 24px;
}

.page-contact .city-banner-message p {
  margin: 0;
  max-width: 36em;
  font-family: var(--font-head);
  font-size: 0.95rem;
  line-height: 1.7;
  color: #e5e7eb;
}

@media (min-width: 900px) {
  .page-contact .city-banner {
    min-height: 300px;
  }
  .page-contact .city-banner-message {
    padding: 32px 36px;
  }
  .page-contact .city-banner-message p {
    font-size: 1.1rem;
  }
}

/* 窄屏细节修正 */
@media (max-width: 480px) {
  .page-contact .contact-wrap {
    padding: 24px 14px 56px;
  }
  .page-contact .contact-hero h1 {
    font-size: 1.65rem;
  }
  .page-contact .channel-item {
    padding: 16px 14px;
  }
  .page-contact .communication-note {
    padding: 22px 18px 18px;
  }
  .page-contact .contact-assist {
    padding: 22px 16px;
  }
  .page-contact .city-banner {
    min-height: 190px;
  }
}

/* 无障碍：减少动画 */
@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-bg::before,
  .page-contact .contact-bg::after,
  .page-contact .contact-visual-meta .meta-dot {
    animation: none;
  }
}