/* 滑动拼图行为验证码 */
.slide-captcha {
  margin: 16px 0 8px;
  user-select: none;
}
.slide-captcha .sc-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 13px;
  color: #64748b;
}
.slide-captcha .sc-refresh {
  border: none;
  background: none;
  color: #2563eb;
  cursor: pointer;
  font-size: 13px;
  padding: 0;
}
.slide-captcha .sc-refresh:hover { text-decoration: underline; }
.slide-captcha .sc-canvas-wrap {
  position: relative;
  width: 300px;
  max-width: 100%;
  height: 160px;
  border-radius: 8px;
  overflow: hidden;
  background: #1e293b;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.08);
}
.slide-captcha .sc-bg {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}
.slide-captcha .sc-piece {
  position: absolute;
  left: 0;
  top: 0;
  pointer-events: none;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,.35));
}
.slide-captcha .sc-track {
  position: relative;
  margin-top: 12px;
  height: 40px;
  background: #f1f5f9;
  border-radius: 20px;
  border: 1px solid #e2e8f0;
  overflow: hidden;
}
.slide-captcha .sc-track-fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #dbeafe, #bfdbfe);
  border-radius: 20px 0 0 20px;
  transition: none;
}
.slide-captcha .sc-track-tip {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #94a3b8;
  pointer-events: none;
}
.slide-captcha .sc-knob {
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid #cbd5e1;
  box-shadow: 0 2px 8px rgba(15,23,42,.12);
  cursor: grab;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  touch-action: none;
}
.slide-captcha .sc-knob:active { cursor: grabbing; }
.slide-captcha .sc-knob::after {
  content: '››';
  font-size: 14px;
  color: #2563eb;
  letter-spacing: -2px;
}
.slide-captcha.verified .sc-track {
  border-color: #86efac;
  background: #f0fdf4;
}
.slide-captcha.verified .sc-track-fill {
  background: linear-gradient(90deg, #bbf7d0, #86efac);
}
.slide-captcha.verified .sc-track-tip {
  color: #16a34a;
  font-weight: 500;
}
.slide-captcha.verified .sc-knob {
  border-color: #86efac;
  cursor: default;
}
.slide-captcha.verified .sc-knob::after { content: '✓'; letter-spacing: 0; color: #16a34a; }
.slide-captcha.fail .sc-track { animation: sc-shake .35s; border-color: #fca5a5; }
@keyframes sc-shake {
  0%,100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}