.page-contact {
  --contact-max-width: 1120px;
  --contact-card-gap: 2rem;
  --contact-card-min-height: 280px;
  --contact-hero-padding: 3rem 1.5rem 2rem;
  --contact-section-padding: 2rem 1.5rem 3rem;
  --contact-border-radius: 20px;
  --contact-font-data: 'JetBrains Mono', 'Courier New', monospace;
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  color: var(--text-primary, #F5F5F5);
  background-color: var(--bg-deep, #0D1B2A);
}

/* ===== 面包屑 ===== */
.contact-breadcrumb {
  max-width: var(--contact-max-width, 1120px);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.6rem;
  font-size: 0.875rem;
  color: var(--text-secondary, #B0B0B0);
}
.contact-breadcrumb a {
  color: var(--accent-green, #00FF87);
  text-decoration: none;
  transition: opacity 0.2s;
}
.contact-breadcrumb a:hover,
.contact-breadcrumb a:focus-visible {
  opacity: 0.75;
  text-decoration: underline;
}
.contact-breadcrumb-sep {
  display: inline-block;
  color: var(--accent-gold, #FFD700);
  font-weight: 700;
  margin: 0 0.15rem;
}
.contact-breadcrumb [aria-current="page"] {
  color: var(--text-primary, #F5F5F5);
  font-weight: 500;
}

/* ===== Hero 区域 ===== */
.contact-hero {
  max-width: var(--contact-max-width, 1120px);
  margin: 0 auto;
  padding: var(--contact-hero-padding, 3rem 1.5rem 2rem);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
  border-bottom: 2px solid rgba(255, 215, 0, 0.15);
}
.contact-hero-text {
  flex: 1;
}
.contact-hero h1 {
  margin: 0 0 0.75rem;
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-white, #FFFFFF);
  letter-spacing: -0.02em;
  position: relative;
  display: inline-block;
}
.contact-hero h1::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--accent-gold, #FFD700);
  border-radius: 4px;
}
.contact-hero-sub {
  margin: 1.25rem 0 0;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-secondary, #B0B0B0);
  max-width: 600px;
}
.contact-hero-logo {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  background: var(--bg-card, #1B2838);
  padding: 0.75rem 1.25rem;
  box-shadow: 0 4px 20px rgba(0, 255, 135, 0.08);
  border: 1px solid rgba(0, 255, 135, 0.2);
  flex-shrink: 0;
}

/* ===== 联系方式卡片区 ===== */
.contact-cards {
  max-width: var(--contact-max-width, 1120px);
  margin: 0 auto;
  padding: var(--contact-section-padding, 2rem 1.5rem 3rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-card-gap, 2rem);
}

/* ===== 单张卡片 ===== */
.contact-card {
  position: relative;
  background: var(--bg-card, #1B2838);
  border-radius: var(--contact-border-radius, 20px);
  border: 1px solid rgba(0, 255, 135, 0.25);
  padding: 1.75rem 1.75rem 2rem;
  min-height: var(--contact-card-min-height, 280px);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: border-color 0.35s ease, box-shadow 0.35s ease, transform 0.3s ease;
  overflow: hidden;
}
.contact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-gold, #FFD700), var(--accent-green, #00FF87));
  opacity: 0.6;
  transition: opacity 0.35s ease;
}
.contact-card:hover,
.contact-card:focus-within {
  border-color: var(--accent-green, #00FF87);
  box-shadow: 0 8px 40px rgba(0, 255, 135, 0.12), 0 0 0 1px rgba(0, 255, 135, 0.15);
  transform: translateY(-4px);
}
.contact-card:hover::before,
.contact-card:focus-within::before {
  opacity: 1;
}
.contact-card-topbar {
  display: none;
}
.contact-card-number {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  color: rgba(255, 215, 0, 0.12);
  font-family: var(--contact-font-data, 'JetBrains Mono', monospace);
  position: absolute;
  top: 0.5rem;
  right: 1rem;
  user-select: none;
  pointer-events: none;
  transition: color 0.3s;
}
.contact-card:hover .contact-card-number {
  color: rgba(255, 215, 0, 0.25);
}
.contact-card-icon {
  display: block;
  width: 80px;
  height: 80px;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  margin-bottom: 1rem;
  border-radius: 12px;
  background: var(--bg-mid, #162233);
  padding: 0.5rem;
  border: 1px solid rgba(255, 215, 0, 0.1);
  flex-shrink: 0;
}
.contact-card-title {
  margin: 0 0 0.6rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white, #FFFFFF);
  letter-spacing: 0.01em;
}
.contact-card-value {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent-green, #00FF87);
  font-family: var(--contact-font-data, 'JetBrains Mono', monospace);
  word-break: break-all;
  line-height: 1.4;
}
.contact-card-note {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary, #B0B0B0);
}

/* ===== 注意事项 ===== */
.contact-notice {
  max-width: var(--contact-max-width, 1120px);
  margin: 0 auto;
  padding: 0.5rem 1.5rem 4rem;
}
.contact-notice-inner {
  max-width: var(--content-narrow, 780px);
  margin: 0 auto;
  background: var(--bg-card, #1B2838);
  border-radius: var(--contact-border-radius, 20px);
  padding: 2rem 2rem 2.5rem;
  border-left: 4px solid var(--accent-gold, #FFD700);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}
.contact-notice-heading {
  margin: 0 0 1.25rem;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-gold, #FFD700);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.contact-notice-heading::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--accent-green, #00FF87);
  border-radius: 50%;
  flex-shrink: 0;
}
.contact-notice-content p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-primary, #F5F5F5);
}
.contact-notice-content p:last-of-type {
  margin-bottom: 1.5rem;
}
.contact-notice-content strong {
  color: var(--accent-green, #00FF87);
  font-weight: 600;
}
.contact-notice-content .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.8rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 60px;
  text-decoration: none;
  transition: background 0.3s, color 0.3s, border-color 0.3s, box-shadow 0.3s;
  cursor: default;
  background: transparent;
  color: var(--accent-green, #00FF87);
  border: 2px solid var(--accent-green, #00FF87);
}
.contact-notice-content .btn:hover,
.contact-notice-content .btn:focus-visible {
  background: var(--accent-green, #00FF87);
  color: var(--bg-deep, #0D1B2A);
  box-shadow: 0 0 20px rgba(0, 255, 135, 0.15);
}

/* ===== 共用类补强 ===== */
.page-contact .data-font {
  font-family: var(--contact-font-data, 'JetBrains Mono', 'Courier New', monospace);
}

/* ===== 平板 ≥ 640px ===== */
@media (min-width: 640px) {
  .contact-hero {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 3.5rem 2rem 2.5rem;
  }
  .contact-hero h1 {
    font-size: 3rem;
  }
  .contact-hero-sub {
    font-size: 1.1rem;
  }
  .contact-hero-logo {
    width: 200px;
    height: auto;
  }
  .contact-cards {
    grid-template-columns: repeat(2, 1fr);
    padding: 2.5rem 2rem 3.5rem;
    gap: 1.8rem;
  }
  .contact-card {
    padding: 2rem 2rem 2.25rem;
    min-height: 260px;
  }
  .contact-card-number {
    font-size: 3.2rem;
    top: 0.75rem;
    right: 1.25rem;
  }
  .contact-notice {
    padding: 0.5rem 2rem 5rem;
  }
  .contact-notice-inner {
    padding: 2.5rem 3rem;
  }
}

/* ===== 桌面 ≥ 960px ===== */
@media (min-width: 960px) {
  .contact-hero {
    padding: 4rem 2.5rem 2.5rem;
  }
  .contact-hero h1 {
    font-size: 3.5rem;
  }
  .contact-hero-sub {
    font-size: 1.15rem;
    max-width: 640px;
  }
  .contact-cards {
    grid-template-columns: repeat(3, 1fr);
    padding: 3rem 2.5rem 4rem;
    gap: 2rem;
  }
  .contact-card {
    padding: 2.25rem 2.25rem 2.5rem;
    min-height: 300px;
  }
  .contact-card-number {
    font-size: 3.6rem;
    top: 0.75rem;
    right: 1.25rem;
  }
  .contact-notice {
    padding: 0.5rem 2.5rem 6rem;
  }
  .contact-notice-inner {
    padding: 3rem 3.5rem;
  }
  .contact-notice-heading {
    font-size: 1.6rem;
  }
}

/* ===== 超宽屏 ≥ 1280px ===== */
@media (min-width: 1280px) {
  .contact-hero {
    padding: 5rem 0 2.5rem;
  }
  .contact-cards {
    padding: 3.5rem 0 4.5rem;
  }
  .contact-notice {
    padding: 0.5rem 0 6rem;
  }
  .contact-breadcrumb {
    padding: 1.5rem 0 0;
  }
}