/**
 * Bot Detection — 样式
 */
.bot-overlay {
  position:fixed;top:0;left:0;width:100%;height:100%;
  background:rgba(0,0,0,0.85);z-index:99999;
  display:flex;align-items:center;justify-content:center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
.bot-captcha {
  background:#1a1a1a;border:1px solid #333;border-radius:10px;
  padding:24px 28px;max-width:380px;width:90%;text-align:center;color:#ccc;
}
.bot-captcha h3 {margin:0 0 4px;font-size:16px;color:#eee;font-weight:500}
.bot-blocked {text-align:center;color:#e5534b;padding:30px}
.bot-blocked h3 {font-size:18px;margin:0 0 6px}

/* 滑块验证码 */
.bot-slider-wrap {margin:16px 0}
.bot-slider-track {
  position:relative;height:40px;background:#222;border-radius:20px;
  border:1px solid #333;overflow:hidden;
}
.bot-slider-fill {
  position:absolute;left:0;top:0;height:100%;width:0;
  background:#2a5a2a;border-radius:20px 0 0 20px;transition:width 0.3s;
}
.bot-slider-target {
  position:absolute;top:2px;width:36px;height:36px;background:rgba(255,255,255,0.15);
  border-radius:50%;border:2px dashed rgba(255,255,255,0.3);
}
.bot-slider-bar {
  position:relative;height:48px;margin-top:4px;background:#222;
  border-radius:24px;border:1px solid #333;
}
.bot-slider-thumb {
  position:absolute;left:0;top:2px;width:44px;height:44px;
  background:#333;border-radius:50%;cursor:grab;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;color:#888;user-select:none;
  transition:left 0.3s;
}
.bot-slider-thumb:hover {background:#444}
.bot-slider-thumb:active {cursor:grabbing;background:#555}

/* 点选验证码 */
.bot-clickselect {display:grid;grid-template-columns:1fr 1fr;gap:8px}
.bot-cs-item {
  padding:20px 10px;background:#222;border:1px solid #333;border-radius:8px;
  cursor:pointer;font-size:28px;transition:all 0.2s;
}
.bot-cs-item:hover {background:#2a2a2a;border-color:#555;transform:scale(1.03)}

/* 数学验证码 */
.bot-math {margin:12px 0}
.bot-math-q {font-size:22px;color:#eee;margin-bottom:10px;letter-spacing:2px}
.bot-math-input {
  width:100%;padding:10px;font-size:16px;text-align:center;
  background:#111;border:1px solid #333;border-radius:6px;color:#eee;
  box-sizing:border-box;margin-bottom:8px;
}
.bot-math-input:focus {outline:none;border-color:#4a7a4a}
.bot-math-btn {
  width:100%;padding:10px;font-size:14px;background:#2a5a2a;border:none;
  border-radius:6px;color:#fff;cursor:pointer;font-weight:500;
}
.bot-math-btn:hover {background:#3a6a3a}