/* ============ AA扑克 鸿蒙版 0062 ============ */
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
  background: #f8fafc;
}

/* 渐变文字 */
.gradient-text {
  background-image: linear-gradient(120deg, #2563eb 0%, #0891b2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 网格背景 */
.bg-grid {
  background-image:
    linear-gradient(to right, rgba(37,99,235,0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(8,145,178,0.06) 1px, transparent 1px);
  background-size: 44px 44px;
}

/* 导航毛玻璃 */
.nav-blur {
  background: rgba(255,255,255,0.85) !important;
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  box-shadow: 0 10px 34px rgba(2,132,199,0.10);
  border-bottom: 1px solid rgba(226,232,240,0.6);
}

/* 卡片悬浮 */
.card-hover {
  transition: transform .4s cubic-bezier(.22,.61,.36,1), box-shadow .4s ease, border-color .4s ease;
}
.card-hover:hover {
  transform: translateY(-12px) scale(1.01);
  box-shadow: 0 26px 55px rgba(8,145,178,0.16);
  border-color: rgba(8,145,178,0.45);
}

/* 发光按钮 */
.btn-glow {
  box-shadow: 0 12px 30px rgba(8,145,178,0.42);
  transition: transform .3s ease, box-shadow .3s ease, filter .3s ease;
}
.btn-glow:hover {
  transform: translateY(-3px);
  filter: brightness(1.05);
  box-shadow: 0 18px 44px rgba(8,145,178,0.55);
}

/* 入场动画 */
.fade-in {
  animation: rise .9s ease both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* FAQ 手风琴 */
.faq-item {
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  margin-bottom: 14px;
  overflow: hidden;
  background: #fff;
  transition: border-color .3s ease, box-shadow .3s ease;
}
.faq-item.active {
  border-color: rgba(8,145,178,0.5);
  box-shadow: 0 14px 34px rgba(8,145,178,0.10);
}
.faq-question {
  cursor: pointer;
  width: 100%;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .45s ease;
}
.faq-answer.open { max-height: 420px; }
.faq-icon { transition: transform .4s ease, color .3s ease; }
.faq-item.active .faq-icon { transform: rotate(180deg); color: #0891b2; }