/* ===== 联系品牌页专属样式 ===== */
.page-contact {
  --card-clip: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  --border-glow: 0 0 12px rgba(138,43,226,0.25), 0 0 40px rgba(57,255,20,0.08);
  --card-bg: #161B22;
  --card-border: 1.5px solid rgba(138,43,226,0.35);
}

.page-contact .container {
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
}

/* ---- 面包屑 ---- */
.page-contact .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-text-secondary, #8B949E);
  margin-bottom: 1.5rem;
  letter-spacing: 0.03em;
}
.page-contact .breadcrumb-link {
  color: var(--color-text-secondary, #8B949E);
  text-decoration: none;
  transition: color var(--transition, 0.3s);
}
.page-contact .breadcrumb-link:hover {
  color: var(--color-secondary, #8A2BE2);
}
.page-contact .breadcrumb-sep {
  color: var(--color-text-secondary, #8B949E);
  opacity: 0.5;
}
.page-contact .breadcrumb-current {
  color: var(--color-text, #E6EDF3);
  font-weight: 500;
}

/* ---- 页面头部 ---- */
.page-contact .page-head {
  margin-bottom: 2.5rem;
  position: relative;
}
.page-contact .page-number {
  display: inline-block;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-secondary, #8A2BE2);
  opacity: 0.25;
  letter-spacing: -0.04em;
  margin-bottom: -0.4rem;
}
.page-contact .page-title {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 2rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text, #E6EDF3);
  margin: 0.15rem 0 0.4rem;
  line-height: 1.1;
}
.page-contact .page-sub {
  font-size: 1rem;
  color: var(--color-text-secondary, #8B949E);
  margin: 0;
  letter-spacing: 0.02em;
}

/* ---- 双栏网格 ---- */
.page-contact .contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

/* ---- 左栏 ---- */
.page-contact .contact-main {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

/* ---- 章节头 ---- */
.page-contact .section-head {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.page-contact .section-number {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent, #39FF14);
  letter-spacing: 0.02em;
  opacity: 0.85;
}
.page-contact .section-title {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 1.25rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text, #E6EDF3);
  margin: 0;
  line-height: 1.2;
}

/* ---- 联系方式卡片 ---- */
.page-contact .contact-card {
  background: var(--card-bg);
  border: var(--card-border);
  clip-path: var(--card-clip);
  padding: 1.5rem 1.25rem;
  box-shadow: var(--border-glow);
  transition: box-shadow var(--transition, 0.3s), border-color var(--transition, 0.3s);
  position: relative;
}
.page-contact .contact-card::before {
  content: '';
  position: absolute;
  inset: 0;
  clip-path: var(--card-clip);
  background: linear-gradient(135deg, rgba(138,43,226,0.08), rgba(57,255,20,0.04));
  pointer-events: none;
}
.page-contact .contact-card:hover {
  box-shadow: 0 0 20px rgba(138,43,226,0.35), 0 0 50px rgba(57,255,20,0.1);
  border-color: rgba(138,43,226,0.6);
}

/* ---- 联系项 ---- */
.page-contact .contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.625rem 1rem;
  padding: 0.25rem 0;
}
.page-contact .contact-label {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-secondary, #8A2BE2);
  min-width: 2.8rem;
}
.page-contact .contact-value-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  flex: 1;
  min-width: 0;
}
.page-contact .contact-email {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.95rem;
  color: var(--color-text, #E6EDF3);
  text-decoration: none;
  word-break: break-all;
  transition: color var(--transition, 0.3s);
  cursor: pointer;
}
.page-contact .contact-email:hover {
  color: var(--color-accent, #39FF14);
}
.page-contact .copy-indicator {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary, #8B949E);
  opacity: 0.5;
  transition: opacity var(--transition, 0.3s), color var(--transition, 0.3s);
  flex-shrink: 0;
}
.page-contact .contact-email:hover + .copy-indicator,
.page-contact .copy-indicator:hover {
  opacity: 1;
  color: var(--color-accent, #39FF14);
}
.page-contact .contact-phone {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text, #E6EDF3);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color var(--transition, 0.3s);
}
.page-contact .contact-phone:hover {
  color: var(--color-secondary, #8A2BE2);
}
.page-contact .contact-note {
  font-size: 0.78rem;
  color: var(--color-text-secondary, #8B949E);
  letter-spacing: 0.02em;
  margin-left: auto;
}
.page-contact .contact-divider {
  height: 1px;
  background: linear-gradient(90deg, rgba(138,43,226,0.3), rgba(57,255,20,0.1), transparent);
  margin: 0.9rem 0;
}

/* ---- 联系须知 ---- */
.page-contact .notice-content {
  background: var(--color-surface, #161B22);
  border-left: 3px solid var(--color-secondary, #8A2BE2);
  padding: 1.25rem 1.25rem 1.25rem 1.5rem;
  border-radius: 0 4px 4px 0;
}
.page-contact .notice-content p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-text-secondary, #8B949E);
  margin: 0 0 0.75rem;
}
.page-contact .notice-content p:last-child {
  margin-bottom: 0;
}

/* ---- 反馈与建议 ---- */
.page-contact .feedback-body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
  background: var(--color-surface, #161B22);
  padding: 1.5rem;
  border: 1px solid rgba(138,43,226,0.15);
  border-radius: 4px;
  position: relative;
}
.page-contact .feedback-icon {
  width: 48px;
  height: 48px;
  object-fit: contain;
  opacity: 0.8;
}
.page-contact .feedback-text {
  margin: 0;
}
.page-contact .feedback-text p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-text-secondary, #8B949E);
  margin: 0 0 0.5rem;
}
.page-contact .feedback-text p:last-child {
  margin-bottom: 0;
}
.page-contact .feedback-link {
  color: var(--color-secondary, #8A2BE2);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition, 0.3s), color var(--transition, 0.3s);
}
.page-contact .feedback-link:hover {
  border-bottom-color: var(--color-secondary, #8A2BE2);
  color: var(--color-accent, #39FF14);
}
.page-contact .feedback-btn {
  align-self: flex-start;
  margin-top: 0.25rem;
}

/* ---- 右栏视觉 ---- */
.page-contact .contact-visual {
  display: none;
}
.page-contact .visual-frame {
  position: relative;
  width: 100%;
  height: auto;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
  border: 1.5px solid rgba(138,43,226,0.25);
  background: #0D1117;
}
.page-contact .visual-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 6 / 5;
}
.page-contact .visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, rgba(11,26,46,0.6), rgba(13,17,23,0.8));
  pointer-events: none;
}
.page-contact .visual-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.page-contact .vl {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(57,255,20,0.25), rgba(138,43,226,0.2), transparent);
  animation: vl-move 6s ease-in-out infinite;
}
.page-contact .vl-1 { top: 18%; width: 70%; left: -10%; animation-delay: 0s; }
.page-contact .vl-2 { top: 38%; width: 55%; left: -5%; animation-delay: 1.2s; }
.page-contact .vl-3 { top: 55%; width: 80%; left: -15%; animation-delay: 2.5s; }
.page-contact .vl-4 { top: 72%; width: 45%; left: -8%; animation-delay: 3.8s; }
.page-contact .vl-5 { top: 88%; width: 65%; left: -12%; animation-delay: 5s; }

@keyframes vl-move {
  0%   { transform: translateX(0); opacity: 0.3; }
  50%  { transform: translateX(15%); opacity: 0.8; }
  100% { transform: translateX(0); opacity: 0.3; }
}

/* ---- 桌面端 >= 768px ---- */
@media (min-width: 768px) {
  .page-contact .container {
    padding: 2rem 2rem 4rem;
  }
  .page-contact .page-head {
    margin-bottom: 3rem;
  }
  .page-contact .page-number {
    font-size: 5rem;
  }
  .page-contact .page-title {
    font-size: 2.8rem;
  }
  .page-contact .page-sub {
    font-size: 1.1rem;
  }
  .page-contact .contact-grid {
    grid-template-columns: 1fr 280px;
    gap: 3rem;
  }
  .page-contact .contact-visual {
    display: block;
    position: sticky;
    top: 6rem;
  }
  .page-contact .visual-frame {
    min-height: 380px;
  }
  .page-contact .section-title {
    font-size: 1.35rem;
  }
  .page-contact .contact-card {
    padding: 1.75rem 1.75rem;
  }
  .page-contact .contact-email {
    font-size: 1rem;
  }
  .page-contact .contact-phone {
    font-size: 1.2rem;
  }
  .page-contact .feedback-body {
    flex-direction: row;
    flex-wrap: wrap;
    padding: 1.75rem 1.75rem;
  }
  .page-contact .feedback-icon {
    width: 56px;
    height: 56px;
  }
  .page-contact .feedback-text {
    flex: 1;
    min-width: 200px;
  }
  .page-contact .feedback-btn {
    margin-top: 0;
  }
}

/* ---- 大桌面端 >= 1024px ---- */
@media (min-width: 1024px) {
  .page-contact .container {
    padding: 2.5rem 3rem 5rem;
  }
  .page-contact .contact-grid {
    grid-template-columns: 1fr 340px;
    gap: 4rem;
  }
  .page-contact .page-number {
    font-size: 6rem;
  }
  .page-contact .page-title {
    font-size: 3.2rem;
  }
  .page-contact .visual-frame {
    min-height: 420px;
  }
  .page-contact .contact-card {
    padding: 2rem 2rem;
  }
  .page-contact .contact-email {
    font-size: 1.05rem;
  }
}

/* ---- 极窄屏保护 ---- */
@media (max-width: 420px) {
  .page-contact .container {
    padding: 1rem 0.75rem 2.5rem;
  }
  .page-contact .page-title {
    font-size: 1.6rem;
  }
  .page-contact .contact-card {
    padding: 1.25rem 1rem;
  }
  .page-contact .contact-item {
    gap: 0.4rem;
  }
  .page-contact .contact-label {
    min-width: 2.2rem;
    font-size: 0.75rem;
  }
  .page-contact .contact-email {
    font-size: 0.85rem;
  }
  .page-contact .contact-phone {
    font-size: 1rem;
  }
  .page-contact .notice-content {
    padding: 1rem 1rem 1rem 1.25rem;
  }
  .page-contact .feedback-body {
    padding: 1.25rem;
  }
}