.page-contact {
  --contact-glow: rgba(46, 91, 255, 0.35);
  --contact-card-border: linear-gradient(135deg, rgba(249, 168, 37, 0.7), rgba(255, 107, 53, 0.4));
  --contact-particle-count: 18;
  display: block;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  color: var(--color-text, #FFFFFF);
  position: relative;
  background: var(--color-background, #0B1A30);
}

/* ===== 背景粒子 ===== */
.page-contact .contact-hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
  opacity: 0.3;
}
.page-contact .contact-hero-bg::before,
.page-contact .contact-hero-bg::after {
  content: '';
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--color-accent, #2E5BFF);
  border-radius: 50%;
  box-shadow:
    80px 120px 0 0 var(--color-accent),
    220px 60px 0 0 var(--color-primary, #FF6B35),
    360px 180px 0 0 var(--color-secondary, #F9A825),
    520px 40px 0 0 var(--color-accent),
    680px 140px 0 0 var(--color-primary),
    840px 80px 0 0 var(--color-secondary),
    100px 260px 0 0 var(--color-accent),
    300px 320px 0 0 var(--color-primary),
    500px 280px 0 0 var(--color-secondary),
    700px 360px 0 0 var(--color-accent),
    900px 220px 0 0 var(--color-primary),
    160px 420px 0 0 var(--color-secondary),
    440px 460px 0 0 var(--color-accent),
    760px 400px 0 0 var(--color-primary),
    960px 340px 0 0 var(--color-secondary),
    60px 540px 0 0 var(--color-accent),
    620px 520px 0 0 var(--color-primary),
    860px 480px 0 0 var(--color-secondary);
  animation: contact-drift 12s ease-in-out infinite alternate;
}
.page-contact .contact-hero-bg::after {
  width: 4px;
  height: 4px;
  box-shadow:
    140px 90px 0 0 rgba(46,91,255,0.5),
    280px 200px 0 0 rgba(255,107,53,0.5),
    420px 130px 0 0 rgba(249,168,37,0.5),
    580px 290px 0 0 rgba(46,91,255,0.5),
    740px 50px 0 0 rgba(255,107,53,0.5),
    900px 310px 0 0 rgba(249,168,37,0.5),
    60px 380px 0 0 rgba(46,91,255,0.5),
    380px 440px 0 0 rgba(255,107,53,0.5),
    660px 160px 0 0 rgba(249,168,37,0.5),
    820px 420px 0 0 rgba(46,91,255,0.5);
  animation: contact-drift 18s ease-in-out infinite alternate-reverse;
}
@keyframes contact-drift {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, -20px) scale(1.15); }
}

/* ===== 面包屑 ===== */
.page-contact .contact-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.6rem;
  font-size: 0.85rem;
  color: var(--color-text-muted, #C0C0C0);
  margin-bottom: 1.2rem;
  position: relative;
  z-index: 1;
}
.page-contact .contact-breadcrumb a {
  color: var(--color-primary, #FF6B35);
  text-decoration: none;
  transition: color 0.2s;
}
.page-contact .contact-breadcrumb a:hover {
  color: var(--color-secondary, #F9A825);
}
.page-contact .breadcrumb-sep {
  color: var(--color-text-muted, #C0C0C0);
  font-size: 0.75rem;
}

/* ===== 首屏标题区 ===== */
.page-contact .contact-hero {
  position: relative;
  z-index: 1;
  margin-bottom: 3.5rem;
  padding: 2.5rem 0 1.5rem;
}
.page-contact .contact-hero-inner {
  position: relative;
  z-index: 1;
}
.page-contact .contact-hero-title {
  font-family: var(--headline-font, Impact, 'Arial Black', sans-serif);
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  font-weight: 900;
  color: var(--color-text, #FFFFFF);
  margin: 0 0 0.75rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  background: var(--gradient-primary, linear-gradient(135deg, #FF6B35, #F9A825));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-contact .contact-hero-desc {
  font-family: var(--body-font, 'PingFang SC', 'Microsoft YaHei UI', sans-serif);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text-muted, #C0C0C0);
  max-width: 640px;
  margin: 0;
}

/* ===== 联系方式卡片网格 ===== */
.page-contact .contact-cards {
  position: relative;
  z-index: 1;
  margin-bottom: 3.5rem;
}
.page-contact .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
.page-contact .contact-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.8rem;
}

/* ===== 单张卡片 ===== */
.page-contact .contact-card {
  background: var(--color-background-dark, #0F1A2E);
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 2rem 1.8rem;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background-clip: padding-box;
}
.page-contact .contact-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 14px;
  background: var(--contact-card-border);
  z-index: -1;
  opacity: 0.65;
  transition: opacity 0.3s ease;
}
.page-contact .contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(46,91,255,0.2);
}
.page-contact .contact-card:hover::before {
  opacity: 1;
}

.page-contact .contact-card-icon-wrap {
  width: 96px;
  height: 96px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
  border-radius: 50%;
  background: rgba(46, 91, 255, 0.1);
  box-shadow: 0 0 24px var(--contact-glow);
  transition: box-shadow 0.3s ease;
}
.page-contact .contact-card:hover .contact-card-icon-wrap {
  box-shadow: 0 0 40px var(--contact-glow), 0 0 60px rgba(255,107,53,0.15);
}
.page-contact .contact-card-icon {
  width: 80px;
  height: 80px;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 0 8px rgba(46,91,255,0.4));
}

.page-contact .contact-card-title {
  font-family: var(--headline-font, Impact, 'Arial Black', sans-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text, #FFFFFF);
  margin: 0 0 0.5rem;
  letter-spacing: 0.04em;
}
.page-contact .contact-card-value {
  font-family: var(--body-font, 'PingFang SC', 'Microsoft YaHei UI', sans-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-secondary, #F9A825);
  margin: 0 0 0.3rem;
  word-break: break-all;
}
.page-contact .contact-card-note {
  font-family: var(--body-font, 'PingFang SC', 'Microsoft YaHei UI', sans-serif);
  font-size: 0.85rem;
  color: var(--color-text-muted, #C0C0C0);
  margin: 0 0 1rem;
  line-height: 1.5;
}
.page-contact .contact-card-badge {
  display: inline-block;
  padding: 0.2rem 0.8rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-background, #0B1A30);
  background: var(--gradient-primary, linear-gradient(135deg, #FF6B35, #F9A825));
  border-radius: 20px;
  letter-spacing: 0.05em;
}
.page-contact .contact-card-link {
  font-family: var(--body-font, 'PingFang SC', 'Microsoft YaHei UI', sans-serif);
  font-size: 0.85rem;
  color: var(--color-primary, #FF6B35);
  text-decoration: none;
  transition: color 0.2s;
  margin-top: 0.3rem;
}
.page-contact .contact-card-link:hover {
  color: var(--color-secondary, #F9A825);
}

/* ===== 复制按钮 ===== */
.page-contact .contact-card-copy {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: transparent;
  border: 1px solid var(--color-accent, #2E5BFF);
  color: var(--color-text, #FFFFFF);
  font-family: var(--body-font, 'PingFang SC', 'Microsoft YaHei UI', sans-serif);
  font-size: 0.8rem;
  padding: 0.4rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.page-contact .contact-card-copy:hover {
  background: rgba(46, 91, 255, 0.15);
  border-color: var(--color-primary, #FF6B35);
  box-shadow: 0 0 16px var(--contact-glow);
}
.page-contact .copy-icon {
  font-size: 1rem;
  line-height: 1;
}
.page-contact .copy-text {
  line-height: 1;
}

/* ===== 技术支持区块 ===== */
.page-contact .contact-support {
  position: relative;
  z-index: 1;
  margin-bottom: 3rem;
}
.page-contact .contact-support-inner {
  background: var(--color-background-dark, #0F1A2E);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  border-left: 4px solid var(--color-primary, #FF6B35);
  position: relative;
}
.page-contact .contact-support-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-border, linear-gradient(90deg, transparent, #2E5BFF, transparent));
  opacity: 0.4;
}
.page-contact .contact-support-title {
  font-family: var(--headline-font, Impact, 'Arial Black', sans-serif);
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 900;
  color: var(--color-text, #FFFFFF);
  margin: 0 0 1rem;
  letter-spacing: 0.03em;
}
.page-contact .contact-support-intro {
  font-family: var(--body-font, 'PingFang SC', 'Microsoft YaHei UI', sans-serif);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-muted, #C0C0C0);
  margin: 0 0 1.4rem;
  max-width: 620px;
}
.page-contact .contact-support-email-block {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  margin-bottom: 1.4rem;
  padding: 1rem 1.2rem;
  background: rgba(46, 91, 255, 0.06);
  border-radius: 8px;
  border: 1px solid rgba(46, 91, 255, 0.15);
}
.page-contact .support-email-label {
  font-family: var(--body-font, 'PingFang SC', 'Microsoft YaHei UI', sans-serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-muted, #C0C0C0);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.page-contact .support-email-address {
  font-family: var(--body-font, 'PingFang SC', 'Microsoft YaHei UI', sans-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-secondary, #F9A825);
  word-break: break-all;
}
.page-contact .support-copy-btn {
  margin-left: auto;
}
.page-contact .contact-support-response {
  font-family: var(--body-font, 'PingFang SC', 'Microsoft YaHei UI', sans-serif);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-muted, #C0C0C0);
  margin: 0 0 1.2rem;
}
.page-contact .contact-support-response a {
  color: var(--color-primary, #FF6B35);
  text-decoration: none;
  transition: color 0.2s;
}
.page-contact .contact-support-response a:hover {
  color: var(--color-secondary, #F9A825);
}
.page-contact .contact-support-info {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.page-contact .contact-support-info-item {
  font-family: var(--body-font, 'PingFang SC', 'Microsoft YaHei UI', sans-serif);
  font-size: 0.85rem;
  color: var(--color-text-muted, #C0C0C0);
  margin: 0;
  padding-left: 1.2rem;
  position: relative;
  line-height: 1.6;
}
.page-contact .contact-support-info-item::before {
  content: '·';
  position: absolute;
  left: 0.4rem;
  color: var(--color-primary, #FF6B35);
  font-weight: 700;
}

/* ===== 额外信息 ===== */
.page-contact .contact-extra {
  position: relative;
  z-index: 1;
}
.page-contact .contact-extra-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-contact .contact-extra-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem 1.5rem;
  background: rgba(15, 26, 46, 0.7);
  border-radius: 10px;
  border: 1px solid var(--color-border, #1A2A44);
  transition: border-color 0.2s, background 0.2s;
}
.page-contact .contact-extra-card:hover {
  border-color: var(--color-accent, #2E5BFF);
  background: rgba(15, 26, 46, 0.9);
}
.page-contact .extra-card-icon {
  font-size: 1.6rem;
  color: var(--color-primary, #FF6B35);
  flex-shrink: 0;
  line-height: 1;
}
.page-contact .extra-card-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  font-family: var(--body-font, 'PingFang SC', 'Microsoft YaHei UI', sans-serif);
  font-size: 0.9rem;
  color: var(--color-text-muted, #C0C0C0);
}
.page-contact .extra-card-text strong {
  color: var(--color-text, #FFFFFF);
  font-weight: 700;
}
.page-contact .extra-card-text a {
  color: var(--color-primary, #FF6B35);
  text-decoration: none;
  transition: color 0.2s;
}
.page-contact .extra-card-text a:hover {
  color: var(--color-secondary, #F9A825);
}

/* ===== 响应式：平板及以上 ===== */
@media (min-width: 640px) {
  .page-contact {
    padding: 2.5rem 2rem 5rem;
  }
  .page-contact .contact-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-contact .contact-card {
    padding: 2.2rem 1.5rem;
  }
  .page-contact .contact-support-inner {
    padding: 3rem 2.5rem;
  }
  .page-contact .contact-extra-inner {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 860px) {
  .page-contact .contact-cards-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-contact .contact-hero {
    padding: 3rem 0 2rem;
  }
  .page-contact .contact-hero-title {
    font-size: 3.4rem;
  }
  .page-contact .contact-support-email-block {
    flex-wrap: nowrap;
  }
}

@media (min-width: 1024px) {
  .page-contact {
    padding: 3rem 2.5rem 6rem;
  }
  .page-contact .contact-card {
    padding: 2.5rem 2rem;
  }
}

/* ===== 窄屏保护 ===== */
@media (max-width: 380px) {
  .page-contact {
    padding: 1.2rem 0.8rem 3rem;
  }
  .page-contact .contact-card {
    padding: 1.5rem 1rem;
  }
  .page-contact .contact-card-icon-wrap {
    width: 72px;
    height: 72px;
  }
  .page-contact .contact-card-icon {
    width: 60px;
    height: 60px;
  }
  .page-contact .contact-support-inner {
    padding: 1.5rem 1rem;
  }
  .page-contact .contact-support-email-block {
    flex-direction: column;
    align-items: flex-start;
  }
  .page-contact .support-copy-btn {
    margin-left: 0;
  }
}
</style>
</main>

```

.page-contact {
  --body-font: inherit;
  --headline-font: inherit;
}