/* ===== 页面专属 CSS：.page-contact ===== */
.page-contact {
  --contact-visual-w: min(38vw, 480px);
  --contact-gap: 2rem;
  --contact-pad: 1.25rem;
  font-family: var(--font-body);
  color: var(--text-dark);
  background-color: var(--bg-light);
  position: relative;
  min-height: 80vh;
}

/* ---------- 面包屑 ---------- */
.contact-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem var(--contact-pad);
  font-size: 0.85rem;
  color: var(--text-dark);
  opacity: 0.7;
  max-width: 1280px;
  margin: 0 auto;
}
.contact-breadcrumb a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.contact-breadcrumb a:hover {
  color: var(--accent-orange);
}
.contact-breadcrumb-sep {
  color: var(--border-subtle);
  user-select: none;
}
.contact-breadcrumb [aria-current="page"] {
  font-weight: 600;
  color: var(--text-dark);
}

/* ---------- 主布局：左右 ---------- */
.contact-layout {
  display: flex;
  flex-direction: column;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--contact-pad) 3rem;
}

/* ---------- 左侧视觉区 ---------- */
.contact-visual {
  position: relative;
  width: 100%;
  height: 220px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2rem;
  flex-shrink: 0;
}
.contact-visual-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0.85;
  z-index: 0;
}
.contact-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
.particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  animation: contact-float 6s ease-in-out infinite alternate;
}
.p1 { width: 18px; height: 18px; top: 12%; left: 8%;  animation-delay: 0s;   background: rgba(255,255,255,0.25); }
.p2 { width: 12px; height: 12px; top: 65%; left: 15%; animation-delay: 0.8s; background: rgba(232,98,46,0.4); }
.p3 { width: 24px; height: 24px; top: 30%; left: 55%; animation-delay: 1.6s; background: rgba(255,255,255,0.15); }
.p4 { width: 10px; height: 10px; top: 70%; left: 70%; animation-delay: 2.2s; background: rgba(10,77,164,0.5); }
.p5 { width: 16px; height: 16px; top: 20%; left: 80%; animation-delay: 3.0s; background: rgba(232,98,46,0.3); }
.p6 { width: 8px;  height: 8px;  top: 80%; left: 40%; animation-delay: 3.8s; background: rgba(255,255,255,0.35); }
.p7 { width: 14px; height: 14px; top: 45%; left: 30%; animation-delay: 4.4s; background: rgba(10,77,164,0.35); }
.p8 { width: 20px; height: 20px; top: 55%; left: 88%; animation-delay: 5.2s; background: rgba(232,98,46,0.25); }

@keyframes contact-float {
  0%   { transform: translateY(0) scale(1);   opacity: 0.5; }
  100% { transform: translateY(-24px) scale(1.2); opacity: 0.9; }
}

/* ---------- 右侧内容区 ---------- */
.contact-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.contact-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.contact-header .section-number {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}
.contact-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  text-transform: uppercase;
  margin: 0;
  color: var(--text-dark);
  letter-spacing: 0.01em;
}

/* ---------- 主图 ---------- */
.contact-hero-img {
  width: 100%;
  max-width: 400px;
  height: auto;
  aspect-ratio: 400 / 200;
  object-fit: cover;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: block;
}

/* ---------- 玻璃卡片 ---------- */
.contact-card {
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}
.contact-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.contact-icon {
  flex-shrink: 0;
  color: var(--primary-blue);
  transition: color var(--transition-fast), transform var(--transition-fast);
  margin-top: 2px;
}
.contact-item:hover .contact-icon {
  color: var(--accent-orange);
  transform: scale(1.08);
}

.contact-item-body {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.contact-item-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary-blue);
  opacity: 0.75;
}

.contact-item-value {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-dark);
  word-break: break-word;
  text-decoration: none;
  transition: color var(--transition-fast);
}
.contact-item-value a {
  color: var(--text-dark);
  text-decoration: none;
}
.contact-item-value a:hover {
  color: var(--accent-orange);
}

.contact-item-note {
  font-size: 0.8rem;
  color: var(--text-dark);
  opacity: 0.55;
  margin-top: 0.1rem;
}

/* ---------- 说明区域 ---------- */
.contact-note-section {
  background: var(--surface-glass);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
}
.contact-note-heading {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
  color: var(--primary-blue);
  letter-spacing: 0.02em;
}
.contact-note-content {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.contact-note-content p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-dark);
}
.contact-note-content a {
  color: var(--primary-blue);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}
.contact-note-content a:hover {
  color: var(--accent-orange);
}

/* ---------- 第二张图 ---------- */
.contact-secondary-img {
  width: 100%;
  max-width: 500px;
  height: auto;
  aspect-ratio: 500 / 250;
  object-fit: cover;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: block;
  margin-top: 0.5rem;
}

/* ---------- 滚动显现 ---------- */
.contact-item[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.contact-item[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式：桌面端 >= 769px ---------- */
@media (min-width: 769px) {
  .page-contact {
    --contact-pad: 2rem;
  }

  .contact-layout {
    flex-direction: row;
    gap: var(--contact-gap);
    padding-bottom: 4rem;
  }

  .contact-visual {
    width: var(--contact-visual-w);
    height: auto;
    min-height: 520px;
    margin-bottom: 0;
    border-radius: var(--radius-lg);
    position: sticky;
    top: 1.5rem;
  }

  .contact-main {
    flex: 1;
    max-width: 680px;
    gap: 2rem;
  }

  .contact-header .section-number {
    font-size: 4rem;
  }
  .contact-title {
    font-size: 2.5rem;
  }

  .contact-card {
    padding: 2rem;
    gap: 1.75rem;
  }

  .contact-item {
    gap: 1.25rem;
  }

  .contact-hero-img {
    max-width: 100%;
    width: 100%;
    aspect-ratio: 400 / 200;
  }

  .contact-secondary-img {
    max-width: 100%;
    width: 100%;
    aspect-ratio: 500 / 250;
  }

  .contact-note-section {
    padding: 1.5rem 2rem;
  }
}

/* ---------- 宽屏微调 ---------- */
@media (min-width: 1200px) {
  .contact-visual {
    --contact-visual-w: 440px;
  }
  .contact-main {
    max-width: 760px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .particle {
    animation: none !important;
    opacity: 0.4;
  }
  .contact-item[data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .contact-item:hover .contact-icon {
    transform: none;
  }
}