.page-contact {
  display: flex;
  background: var(--color-bg-dark);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  min-height: calc(100vh - var(--header-height, 60px));
  position: relative;
}

/* ===== 左侧固定索引栏 ===== */
.page-contact__sidebar {
  display: none;
  width: 260px;
  flex-shrink: 0;
  background: var(--color-bg-medium);
  border-right: 1px solid rgba(255, 215, 0, 0.12);
  padding: 2rem 1.25rem;
  position: sticky;
  top: var(--header-height, 60px);
  height: calc(100vh - var(--header-height, 60px));
  overflow-y: auto;
  z-index: 5;
}

.page-contact__sidebar-inner {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.page-contact__sidebar-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent-gold);
  margin: 0;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 215, 0, 0.2);
}

.page-contact__search-wrap {
  position: relative;
}

.page-contact__search-input {
  width: 100%;
  padding: 0.65rem 0.9rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 0.85rem;
  transition: border-color 0.25s, box-shadow 0.25s;
  box-sizing: border-box;
}

.page-contact__search-input::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.7;
}

.page-contact__search-input:focus {
  outline: none;
  border-color: var(--color-accent-gold);
  box-shadow: 0 0 0 2px rgba(255, 215, 0, 0.15);
}

.page-contact__index-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.page-contact__index-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 400;
  padding: 0.4rem 0.6rem;
  border-radius: 4px;
  transition: color 0.2s, background 0.2s, padding-left 0.2s;
  position: relative;
}

.page-contact__index-link::before {
  content: "⟡";
  margin-right: 0.55rem;
  color: var(--color-accent-gold);
  opacity: 0.5;
  font-size: 0.75rem;
  transition: opacity 0.2s;
}

.page-contact__index-link:hover,
.page-contact__index-link:focus {
  color: var(--color-text-primary);
  background: rgba(255, 215, 0, 0.06);
  padding-left: 1rem;
}

.page-contact__index-link:hover::before,
.page-contact__index-link:focus::before {
  opacity: 1;
}

.page-contact__favorite {
  margin-top: 0.75rem;
}

.page-contact__favorite .btn {
  width: 100%;
  justify-content: center;
  font-size: 0.82rem;
  padding: 0.55rem 0;
  background: transparent;
  border: 1px solid var(--color-accent-gold);
  color: var(--color-accent-gold);
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.25s, color 0.25s;
}

.page-contact__favorite .btn:hover,
.page-contact__favorite .btn:focus {
  background: var(--color-accent-gold);
  color: var(--color-bg-dark);
}

/* ===== 右侧主内容 ===== */
.page-contact__content {
  flex: 1;
  min-width: 0;
  padding: 1.75rem 1.25rem 3rem;
  max-width: 960px;
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

/* 面包屑 */
.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  margin-bottom: 1.25rem;
  padding: 0;
  background: none;
  border: none;
}

.page-contact .breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.page-contact .breadcrumb a:hover {
  color: var(--color-accent-gold);
}

.page-contact .breadcrumb__sep {
  color: rgba(255, 255, 255, 0.2);
}

.page-contact .breadcrumb span[aria-current="page"] {
  color: var(--color-accent-gold);
  font-weight: 500;
}

/* 标题 */
.page-contact__heading {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-primary);
  margin: 0 0 2rem 0;
  line-height: 1.15;
  position: relative;
  display: inline-block;
}

.page-contact__heading::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-accent-gold);
  margin-top: 0.55rem;
  border-radius: 2px;
}

.page-contact__section-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-primary);
  margin: 0 0 1.25rem 0;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid rgba(255, 215, 0, 0.15);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ===== 上部 flex 容器 ===== */
.page-contact__upper {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

/* ===== 表单区域 ===== */
.page-contact__form-section {
  flex: 1;
}

.page-contact__form {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.page-contact__form-group {
  flex: 1 1 calc(50% - 0.5rem);
  min-width: 200px;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.page-contact__form-group--full {
  flex-basis: 100%;
  min-width: 100%;
}

.page-contact__form-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  letter-spacing: 0.03em;
}

.page-contact__form-input,
.page-contact__form-textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: rgba(255, 255, 255, 0.04);
  border: none;
  border-bottom: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 0;
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 0.92rem;
  transition: border-color 0.3s, background 0.3s;
  box-sizing: border-box;
}

.page-contact__form-input::placeholder,
.page-contact__form-textarea::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.5;
}

.page-contact__form-input:focus,
.page-contact__form-textarea:focus {
  outline: none;
  border-bottom-color: var(--color-accent-gold);
  background: rgba(255, 215, 0, 0.04);
}

.page-contact__form-textarea {
  resize: vertical;
  min-height: 100px;
}

.page-contact__form-actions {
  flex-basis: 100%;
  margin-top: 0.5rem;
}

.page-contact__form-btn {
  padding: 0.75rem 2.4rem;
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--color-primary);
  color: var(--color-text-primary);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.page-contact__form-btn:hover,
.page-contact__form-btn:focus {
  background: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(139, 0, 0, 0.4);
}

.page-contact__form-btn:active {
  transform: translateY(0);
}

/* ===== 联系方式区域 ===== */
.page-contact__info-section {
  flex: 1;
  min-width: 260px;
}

.page-contact__info-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-contact__info-card {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  padding: 1rem 1.1rem;
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid var(--color-accent-gold);
  border-radius: 0 6px 6px 0;
  transition: background 0.25s;
}

.page-contact__info-card:hover {
  background: rgba(255, 215, 0, 0.05);
}

.page-contact__info-card--wide {
  flex-wrap: wrap;
}

.page-contact__info-icon {
  color: var(--color-accent-gold);
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  margin-top: 0.1rem;
}

.page-contact__info-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
  flex: 1;
}

.page-contact__info-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.page-contact__info-value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-primary);
  word-break: break-word;
  text-decoration: none;
  transition: color 0.2s;
}

.page-contact__info-value:hover {
  color: var(--color-accent-gold);
}

.page-contact__info-note {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  opacity: 0.7;
  margin-top: 0.1rem;
  font-style: italic;
}

.page-contact__info-decor {
  margin-top: 1.25rem;
  border-radius: 6px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
  display: flex;
  justify-content: center;
}

.page-contact__info-img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 4px;
  opacity: 0.8;
}

/* ===== 地图区域 ===== */
.page-contact__map-section {
  margin-top: 0.5rem;
  padding-top: 0.5rem;
}

.page-contact__map-container {
  background: rgba(255, 255, 255, 0.02);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(255, 215, 0, 0.08);
  position: relative;
}

.page-contact__map-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 800 / 400;
}

.page-contact__map-caption {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  text-align: center;
  margin-top: 0.75rem;
  opacity: 0.7;
  letter-spacing: 0.02em;
}

/* ===== 桌面端 ≥768px ===== */
@media (min-width: 768px) {
  .page-contact__sidebar {
    display: block;
  }

  .page-contact__content {
    padding: 2.5rem 2.5rem 4rem;
  }

  .page-contact__heading {
    font-size: 3rem;
  }

  .page-contact__upper {
    flex-direction: row;
    gap: 2.5rem;
  }

  .page-contact__form-section {
    flex: 1.2;
  }

  .page-contact__info-section {
    flex: 0.9;
  }

  .page-contact__info-card {
    padding: 1.15rem 1.3rem;
  }

  .page-contact__map-container {
    border-radius: 10px;
  }
}

/* ===== 大桌面端 ≥1024px ===== */
@media (min-width: 1024px) {
  .page-contact__content {
    padding: 3rem 3.5rem 5rem;
    max-width: 1040px;
  }

  .page-contact__heading {
    font-size: 3.4rem;
  }

  .page-contact__upper {
    gap: 3.5rem;
  }

  .page-contact__form-section {
    flex: 1.3;
  }

  .page-contact__info-section {
    flex: 0.85;
  }
}

/* ===== 超小屏适配 ≤400px ===== */
@media (max-width: 400px) {
  .page-contact__content {
    padding: 1.25rem 0.9rem 2.5rem;
  }

  .page-contact__heading {
    font-size: 1.6rem;
  }

  .page-contact__form-group {
    flex-basis: 100%;
    min-width: 100%;
  }

  .page-contact__form-btn {
    width: 100%;
    text-align: center;
  }

  .page-contact__info-card {
    flex-direction: column;
    gap: 0.5rem;
  }

  .page-contact__map-caption {
    font-size: 0.72rem;
  }
}