/* 万禾科技GEO引擎优化 — 高级科技主题 v2 */
:root {
  --db-navy-0: #04070f;
  --db-navy-1: #070d1c;
  --db-navy-2: #0c1530;
  --db-navy-3: #152044;
  --db-panel: rgba(16, 26, 54, 0.88);
  --db-panel-solid: #121c3a;
  --db-line: rgba(120, 170, 255, 0.18);
  --db-line-strong: rgba(140, 190, 255, 0.35);
  --db-text: #e8eefc;
  --db-text-strong: #f5f8ff;
  --db-muted: #8b9bb8;
  --db-blue: #3b82f6;
  --db-cyan: #22d3ee;
  --db-violet: #8b5cf6;
  --db-magenta: #d946ef;
  --db-glow: 0 0 28px rgba(59, 130, 246, 0.4);
  --db-glow-strong: 0 0 36px rgba(139, 92, 246, 0.5);
  --db-grad-brand: linear-gradient(135deg, #2563eb 0%, #7c3aed 50%, #d946ef 100%);
  --db-grad-btn: linear-gradient(135deg, #3b82f6 0%, #6366f1 50%, #8b5cf6 100%);
  --db-grad-btn-hover: linear-gradient(135deg, #60a5fa, #a78bfa);
  --db-grad-side: linear-gradient(180deg, #050a16 0%, #0c1530 50%, #070d1c 100%);
  --db-grad-top: linear-gradient(90deg, rgba(5, 10, 22, 0.96), rgba(16, 26, 54, 0.94));
  --db-grad-page:
    radial-gradient(ellipse 90% 55% at 8% -12%, rgba(59, 130, 246, 0.28), transparent 52%),
    radial-gradient(ellipse 70% 45% at 95% -5%, rgba(168, 85, 247, 0.22), transparent 48%),
    radial-gradient(ellipse 55% 40% at 50% 110%, rgba(34, 211, 238, 0.1), transparent 55%),
    linear-gradient(165deg, #04070f 0%, #070d1c 42%, #0a1430 100%);
  --db-grid:
    linear-gradient(rgba(99, 150, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 150, 255, 0.045) 1px, transparent 1px);
  --db-radius: 14px;
  --db-radius-sm: 10px;
  --db-font: "PingFang SC", "Segoe UI", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --db-display: "PingFang SC", "Segoe UI", "Microsoft YaHei", sans-serif;

  --brand: #6366f1;
  --brand-dark: #4f46e5;
  --bg: #070d1c;
  --text: #e8eefc;
  --muted: #8b9bb8;
  --border: rgba(120, 170, 255, 0.18);
  --success: #22c55e;
}

@keyframes db-pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.25); }
  50% { box-shadow: 0 0 22px 2px rgba(99, 102, 241, 0.45); }
}
@keyframes db-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}
@keyframes db-scan {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}
@keyframes db-border-flow {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

.db-tech-bg {
  background-color: var(--db-navy-0);
  background-image: var(--db-grad-page);
  background-attachment: fixed;
}
.db-tech-bg::before {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image: var(--db-grid);
  background-size: 44px 44px;
  opacity: 0.5;
  mask-image: radial-gradient(ellipse at center, #000 25%, transparent 80%);
}
.db-glass {
  background: linear-gradient(145deg, rgba(22, 34, 72, 0.9), rgba(10, 16, 36, 0.92));
  border: 1px solid var(--db-line);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(14px);
  border-radius: var(--db-radius);
}
.db-neon-text {
  background: var(--db-grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 通用精修：玻璃卡片 / 按钮 / 输入框 */
.db-card-light {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.98), rgba(241, 245, 255, 0.96));
  border: 1px solid rgba(140, 180, 255, 0.28);
  border-radius: var(--db-radius);
  box-shadow: 0 14px 36px rgba(15, 23, 42, 0.1), 0 0 0 1px rgba(255, 255, 255, 0.4) inset;
}
.db-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 36px; padding: 0 16px; border: none; border-radius: 10px;
  background: var(--db-grad-btn); color: #fff; font-weight: 600; font-size: 13px;
  cursor: pointer; box-shadow: 0 6px 18px rgba(99, 102, 241, 0.35);
  transition: transform .12s ease, filter .12s ease, box-shadow .12s ease;
}
.db-btn:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(99, 102, 241, 0.45);
}
.db-input {
  height: 38px; padding: 0 12px; border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: rgba(255, 255, 255, 0.95);
  transition: border-color .15s, box-shadow .15s;
}
.db-input:focus {
  outline: none;
  border-color: #818cf8;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}