/* =============================================
   page-contact – 联系我们
   所有选择器限定在 .page-contact 作用域内
   ============================================= */
.page-contact {
  --contact-grid-gap: 2.5rem;
  --contact-card-radius: 4px;
  --contact-accent-line: 3px solid #FF6600;
  --contact-card-bg: #FFFFFF;
  --contact-map-border: 1px solid rgba(0,85,164,0.15);
  display: block;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
  font-family: var(--font-sans, 'Inter','Noto Sans SC',sans-serif);
  color: var(--color-neutral-dark, #2C2C2C);
  background: var(--color-neutral-light, #F5F5F5);
}

/* ---------- 面包屑 ---------- */
.page-contact__breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
  font-size: 0.8125rem;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  color: #003D7A;
  letter-spacing: 0.02em;
}
.page-contact__breadcrumb a {
  color: #003D7A;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
.page-contact__breadcrumb a:hover,
.page-contact__breadcrumb a:focus-visible {
  border-bottom-color: #FF6600;
  color: #FF6600;
}
.page-contact__breadcrumb-sep {
  color: #003D7A;
  opacity: 0.4;
  margin: 0 0.15rem;
}
.page-contact__breadcrumb [aria-current="page"] {
  color: #FF6600;
  font-weight: 600;
}

/* ---------- 双列布局 ---------- */
.page-contact__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-grid-gap);
}

/* ---------- 信息区 ---------- */
.page-contact__info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.page-contact__title {
  font-size: 2rem;
  font-weight: 700;
  font-style: italic;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--color-primary, #0055A4);
  margin: 0 0 0.25rem;
  line-height: 1.15;
  border-left: 4px solid #FF6600;
  padding-left: 1rem;
}
.page-contact__intro {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: #4a4a4a;
  max-width: 38em;
  margin: 0;
}
.page-contact__icon-group {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--contact-card-radius);
  margin: 0.5rem 0 0.25rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

/* ---------- 联系方式卡片 ---------- */
.page-contact__methods {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.page-contact__card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--contact-card-bg);
  border: 1px solid rgba(0,85,164,0.12);
  border-left: var(--contact-accent-line);
  border-radius: var(--contact-card-radius);
  padding: 1rem 1.25rem;
  transition: box-shadow 0.25s, border-color 0.25s;
  position: relative;
}
.page-contact__card:hover {
  box-shadow: 0 2px 12px rgba(0,85,164,0.08);
  border-color: rgba(0,85,164,0.25);
}
.page-contact__card:focus-within {
  outline: 2px solid rgba(0,85,164,0.35);
  outline-offset: 2px;
}
.page-contact__card--email {
  cursor: pointer;
}
.page-contact__card--email::after {
  content: "复制";
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.6875rem;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  color: #FF6600;
  border: 1px solid #FF6600;
  border-radius: 2px;
  padding: 0.15rem 0.5rem;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}
.page-contact__card--email:hover::after,
.page-contact__card--email:focus-within::after {
  opacity: 1;
}
@media (hover: none) {
  .page-contact__card--email::after {
    opacity: 1;
    position: static;
    transform: none;
    margin-left: auto;
    flex-shrink: 0;
  }
}
.page-contact__card-icon {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
}
.page-contact__card-body {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
  flex: 1;
}
.page-contact__card-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #003D7A;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
}
.page-contact__card-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-neutral-dark, #2C2C2C);
  word-break: break-all;
}
.page-contact__card-hint {
  font-size: 0.6875rem;
  color: #888;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  align-self: flex-end;
  flex-shrink: 0;
}
.page-contact__card-note {
  font-size: 0.6875rem;
  color: #888;
  font-style: italic;
  flex-shrink: 0;
  align-self: flex-end;
}

/* ---------- ICP备案 ---------- */
.page-contact__icp {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1rem;
  background: rgba(0,85,164,0.04);
  border: 1px solid rgba(0,85,164,0.1);
  border-radius: var(--contact-card-radius);
  margin-top: 0.25rem;
}
.page-contact__icp-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #003D7A;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
}
.page-contact__icp-value {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-neutral-dark, #2C2C2C);
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  letter-spacing: 0.02em;
}

/* ---------- 地图区域 ---------- */
.page-contact__map-area {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.page-contact__map-wrapper {
  position: relative;
  width: 100%;
  max-width: 600px;
  aspect-ratio: 600 / 400;
  border: var(--contact-map-border);
  border-radius: var(--contact-card-radius);
  overflow: hidden;
  background: #FAFAFA;
}
.page-contact__map-bg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-contact__map-svg {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  mix-blend-mode: multiply;
  pointer-events: none;
}
@media (prefers-color-scheme: dark) {
  .page-contact__map-svg {
    mix-blend-mode: screen;
  }
  .page-contact__map-label {
    fill: #FF6600;
  }
}
.page-contact__map-controls {
  position: absolute;
  bottom: 0.5rem;
  right: 0.5rem;
  z-index: 2;
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(0,85,164,0.12);
  border-radius: 2px;
  padding: 0.2rem 0.6rem;
  font-size: 0.625rem;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  color: #003D7A;
  pointer-events: none;
}
.page-contact__map-caption {
  font-size: 0.8125rem;
  color: #666;
  margin: 0;
  padding-left: 0.25rem;
  border-left: 2px solid #FF6600;
  padding-left: 0.6rem;
  font-style: italic;
}
/* 地图内部元素样式（需穿透作用域，但被svg隔离） */
.page-contact__map-outline {
  transition: fill 0.3s;
}
.page-contact__map-wrapper:hover .page-contact__map-outline {
  fill: rgba(255,102,0,0.12);
}
.page-contact__map-city {
  transition: r 0.2s;
}
.page-contact__map-wrapper:hover .page-contact__map-city {
  r: 6;
}
.page-contact__map-label {
  font-family: var(--font-sans, 'Inter','Noto Sans SC',sans-serif);
  dominant-baseline: middle;
}

/* ---------- 底部扩展区 ---------- */
.page-contact__extra {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(0,85,164,0.12);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}
.page-contact__extra-inner {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
  min-width: 180px;
}
.page-contact__extra-text {
  font-size: 0.875rem;
  color: #4a4a4a;
  margin: 0;
  line-height: 1.5;
}
.page-contact__extra-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}
.page-contact__extra-link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary, #0055A4);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
}
.page-contact__extra-link:hover,
.page-contact__extra-link:focus-visible {
  border-bottom-color: #FF6600;
  color: #FF6600;
}
.page-contact__extra-img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--contact-card-radius);
  box-shadow: 0 1px 6px rgba(0,0,0,0.04);
  flex-shrink: 0;
}

/* ---------- 信任声明 ---------- */
.page-contact__trust-note {
  margin: 2rem 0 0;
  padding: 0.75rem 1rem;
  font-size: 0.75rem;
  line-height: 1.6;
  color: #888;
  background: rgba(0,85,164,0.02);
  border: 1px solid rgba(0,85,164,0.06);
  border-radius: var(--contact-card-radius);
  max-width: 54em;
}

/* =============================================
   响应式 – 移动端优先，桌面增强
   ============================================= */
@media (min-width: 48rem) {
  .page-contact {
    padding: 2rem 2rem 4rem;
  }
  .page-contact__layout {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }
  .page-contact__title {
    font-size: 2.75rem;
    padding-left: 1.25rem;
  }
  .page-contact__intro {
    font-size: 1rem;
  }
  .page-contact__card {
    padding: 1.1rem 1.5rem;
  }
  .page-contact__card-value {
    font-size: 1.0625rem;
  }
  .page-contact__icp {
    padding: 1rem 1.25rem;
  }
  .page-contact__map-wrapper {
    max-width: 100%;
  }
  .page-contact__extra-img {
    width: 360px;
  }
}

@media (min-width: 64rem) {
  .page-contact {
    padding: 2.5rem 2.5rem 5rem;
  }
  .page-contact__layout {
    grid-template-columns: 4fr 8fr;
    gap: 3rem;
  }
  .page-contact__title {
    font-size: 3.25rem;
  }
  .page-contact__card--email::after {
    opacity: 0;
  }
  .page-contact__card--email:hover::after {
    opacity: 1;
  }
  .page-contact__extra-img {
    width: 400px;
  }
}

/* 窄屏微调 */
@media (max-width: 30rem) {
  .page-contact {
    padding: 0.75rem 0.75rem 2rem;
  }
  .page-contact__title {
    font-size: 1.6rem;
    padding-left: 0.75rem;
  }
  .page-contact__card {
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
  }
  .page-contact__card-icon {
    width: 1.5rem;
    height: 1.5rem;
  }
  .page-contact__card-value {
    font-size: 0.875rem;
  }
  .page-contact__icp {
    flex-wrap: wrap;
    gap: 0.3rem;
  }
  .page-contact__extra {
    flex-direction: column;
    align-items: stretch;
  }
  .page-contact__extra-img {
    width: 100%;
    max-width: 400px;
  }
}