/* ============================================================
   WEpoker 安卓版下载 — 主题样式（indigo-600 → cyan-500 明亮科技风）
   ============================================================ */

:root {
  --brand-from: #4f46e5;
  --brand-to: #06b6d4;
  --ink: #0f172a;
}

html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* 渐变文字 */
.gradient-text {
  background-image: linear-gradient(135deg, var(--brand-from), var(--brand-to));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 网格背景 */
.bg-grid {
  background-image:
    linear-gradient(rgba(6, 182, 212, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6, 182, 212, 0.07) 1px, transparent 1px);
  background-size: 44px 44px;
}

/* 导航栏滚动毛玻璃（明亮） */
.nav-blur {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 8px 30px rgba(79, 70, 229, 0.12);
}

/* 卡片 hover */
.card-hover {
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease, border-color 0.35s ease;
}
.card-hover:hover {
  transform: translateY(-10px);
  border-color: rgba(6, 182, 212, 0.45);
  box-shadow: 0 24px 50px -12px rgba(6, 182, 212, 0.28);
}

/* 发光按钮 */
.btn-glow {
  box-shadow: 0 10px 30px -6px rgba(6, 182, 212, 0.55);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.btn-glow:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 42px -8px rgba(6, 182, 212, 0.7);
}

/* 滚动淡入 */
.fade-in {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* FAQ 手风琴（明亮） */
.faq-item {
  border: 1px solid #e0f2fe;
  border-radius: 16px;
  background: #ffffff;
  overflow: hidden;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.faq-item.active {
  border-color: rgba(6, 182, 212, 0.5);
  box-shadow: 0 16px 40px -18px rgba(6, 182, 212, 0.3);
}
.faq-question { cursor: pointer; user-select: none; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 1.5rem;
}
.faq-item.active .faq-answer {
  max-height: 240px;
  padding: 0 1.5rem 1.5rem;
}
.faq-icon { transition: transform 0.3s ease; }
.faq-item.active .faq-icon { transform: rotate(45deg); }

/* 安卓徽章卡片 */
.android-badge {
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(10px);
}

/* 子页顶部横幅 */
.page-hero {
  background-image: linear-gradient(135deg, var(--brand-from), var(--brand-to));
}