.page-contact {
  --contact-card-radius: 8px;
  --contact-gap: 20px;
}

/* 页面头部 */
.page-contact .contact-page-header {
  padding-top: var(--sp-6);
  padding-bottom: var(--sp-5);
}

.page-contact .contact-page-header h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: 0.01em;
  margin: 0 0 var(--sp-3);
}

.page-contact .contact-page-intro {
  max-width: 860px;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-light);
  margin: 0;
}

/* 联系方式卡片网格 */
.page-contact .contact-cards-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--contact-gap);
}

/* 联系方式卡片基础 */
.page-contact .contact-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 170px;
  padding: var(--sp-5);
  border: 2px solid var(--text-dark);
  box-shadow: var(--shadow-card);
  border-radius: var(--contact-card-radius);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-contact .contact-card:hover,
.page-contact .contact-card:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
}

.page-contact .contact-card:focus-visible {
  outline: 2px solid var(--accent-yellow);
  outline-offset: 2px;
}

/* 卡片配色 */
.page-contact .contact-card-mail {
  background: var(--bg-card-accent);
}

.page-contact .contact-card-phone,
.page-contact .contact-card-address {
  background: var(--bg-card);
}

.page-contact .contact-card-response {
  background: var(--bg-section-a);
  border-color: var(--line-border);
  color: var(--text-light);
}

.page-contact .contact-card-faq {
  background: var(--bg-section-b);
  border-color: var(--accent-teal);
  color: var(--text-light);
  text-decoration: none;
  border-radius: var(--contact-card-radius);
}

/* 卡片内部结构 */
.page-contact .contact-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-3);
}

.page-contact .contact-card-body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-top: auto;
  padding-top: var(--sp-4);
}

.page-contact .contact-card-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-dark);
  border: 1px solid var(--text-dark);
  padding: 2px 8px;
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.25);
}

.page-contact .contact-card-mail .contact-card-index {
  background: var(--accent-yellow);
}

.page-contact .contact-card-phone .contact-card-index {
  background: var(--accent-teal);
}

.page-contact .contact-card-address .contact-card-index {
  background: var(--accent-orange);
}

.page-contact .contact-icon {
  display: block;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
}

.page-contact .contact-card-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text-dark);
  opacity: 0.55;
  margin: 0;
}

.page-contact .contact-card-title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.25rem;
  line-height: 1.25;
  margin: 0;
  color: var(--text-dark);
}

.page-contact .contact-card-desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-dark);
  opacity: 0.78;
  margin: 0;
}

.page-contact .contact-card-link {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-dark);
  text-decoration: underline;
  text-decoration-color: var(--accent-yellow);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  word-break: break-all;
}

.page-contact .contact-card-link:hover {
  text-decoration-color: var(--text-dark);
}

/* 响应时效卡 */
.page-contact .contact-card-response {
  justify-content: center;
}

.page-contact .contact-card-response-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent-yellow);
}

.page-contact .contact-card-response-time {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 2rem;
  line-height: 1.15;
  margin: var(--sp-2) 0 var(--sp-3);
  color: var(--text-light);
}

.page-contact .contact-card-response .contact-card-desc {
  color: var(--text-light);
  opacity: 0.8;
}

/* FAQ 卡 */
.page-contact .contact-card-faq-term {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent-teal);
}

.page-contact .contact-card-faq .contact-card-title {
  color: var(--text-light);
}

.page-contact .contact-card-faq .contact-card-desc {
  color: var(--text-light);
  opacity: 0.85;
}

/* 装饰纹理 */
.page-contact .contact-texture {
  display: block;
  width: 100%;
  max-width: 400px;
  height: auto;
  margin: var(--sp-5) auto 0;
  opacity: 0.8;
}

/* 反馈处理面板 */
.page-contact .feedback-panel {
  background: var(--bg-section-a);
  border: 2px solid var(--line-border);
  box-shadow: var(--shadow-sm);
  border-radius: var(--contact-card-radius);
  padding: var(--sp-5);
}

.page-contact .feedback-flow-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--text-dark);
  box-shadow: var(--shadow-sm);
  border-radius: var(--contact-card-radius);
  margin-bottom: var(--sp-6);
}

/* 反馈时间线 */
.page-contact .feedback-timeline {
  position: relative;
  padding: 0;
  margin: 0;
  list-style: none;
}

.page-contact .feedback-timeline::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: var(--accent-teal);
  opacity: 0.4;
}

.page-contact .timeline-item {
  position: relative;
  padding-left: 64px;
  margin-bottom: var(--sp-5);
}

.page-contact .timeline-item:last-child {
  margin-bottom: 0;
}

.page-contact .timeline-node {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  background: var(--accent-yellow);
  border: 2px solid var(--text-dark);
  box-shadow: var(--shadow-sm);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-dark);
  z-index: 1;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-contact .timeline-item:hover .timeline-node,
.page-contact .timeline-item:focus-within .timeline-node {
  transform: scale(1.06);
  box-shadow: var(--shadow-lg);
}

.page-contact .timeline-content {
  background: var(--bg-card);
  border: 2px solid var(--text-dark);
  box-shadow: var(--shadow-sm);
  border-radius: var(--contact-card-radius);
  padding: var(--sp-4) var(--sp-5);
  color: var(--text-dark);
}

.page-contact .timeline-content h3 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.1rem;
  margin: 0 0 var(--sp-2);
}

.page-contact .timeline-content p {
  font-size: 0.92rem;
  line-height: 1.65;
  margin: 0;
}

.page-contact .timeline-detail {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.35s ease, opacity 0.3s ease, margin-top 0.3s ease;
}

.page-contact .timeline-item:hover .timeline-detail,
.page-contact .timeline-item:focus-within .timeline-detail {
  max-height: 140px;
  opacity: 1;
  margin-top: var(--sp-3);
}

/* 相关指引 */
.page-contact .contact-guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--contact-gap);
}

.page-contact .guide-card {
  display: flex;
  flex-direction: column;
  padding: var(--sp-5);
  border: 2px solid var(--line-border);
  background: var(--bg-section-b);
  box-shadow: var(--shadow-card);
  border-radius: var(--contact-card-radius);
  color: var(--text-light);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.page-contact .guide-card:hover,
.page-contact .guide-card:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-yellow);
}

.page-contact .guide-card:focus-visible {
  outline: 2px solid var(--accent-yellow);
  outline-offset: 2px;
}

.page-contact .guide-card-index {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--accent-yellow);
}

.page-contact .guide-card h3 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.25rem;
  margin: var(--sp-3) 0 4px;
  color: var(--text-light);
}

.page-contact .guide-card p {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-light);
  opacity: 0.85;
  margin: 0 0 var(--sp-3);
}

.page-contact .guide-card-more {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-teal);
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-contact .contact-cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-card-featured {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .page-contact .contact-card-phone {
    grid-column: 2;
    grid-row: 1;
  }

  .page-contact .contact-card-address {
    grid-column: 2;
    grid-row: 2;
  }

  .page-contact .contact-card-response {
    grid-column: 1;
    grid-row: 3;
  }

  .page-contact .contact-card-faq {
    grid-column: 2;
    grid-row: 3;
  }

  .page-contact .feedback-panel {
    padding: var(--sp-6);
  }

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

/* 桌面端 */
@media (min-width: 1024px) {
  .page-contact .contact-cards-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-auto-rows: minmax(150px, auto);
  }

  .page-contact .contact-card-featured {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .page-contact .contact-card-phone {
    grid-column: 2;
    grid-row: 1;
  }

  .page-contact .contact-card-address {
    grid-column: 3;
    grid-row: 1;
  }

  .page-contact .contact-card-response {
    grid-column: 2;
    grid-row: 2;
  }

  .page-contact .contact-card-faq {
    grid-column: 3;
    grid-row: 2;
  }
}

/* 触屏与窄屏时间线详情默认展开 */
@media (hover: none), (max-width: 719px) {
  .page-contact .timeline-detail {
    max-height: none;
    opacity: 1;
    margin-top: var(--sp-3);
  }
}