.demo-notice {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 999px;
  background: rgba(12,12,12,.72);
  color: rgba(255,255,255,.8);
  box-shadow: 0 14px 40px rgba(0,0,0,.22);
  backdrop-filter: blur(16px);
  font: 500 11px/1 Inter, sans-serif;
  letter-spacing: .08em;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.demo-notice__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ff8a3d;
  box-shadow: 0 0 14px rgba(255,138,61,.8);
}

.concept-card {
  position: relative;
  min-height: 480px;
  overflow: hidden;
  padding: clamp(34px, 5vw, 68px);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 32px;
  background:
    linear-gradient(145deg, rgba(255,255,255,.07), rgba(255,255,255,.015)),
    #101010;
  color: #fff;
}

.concept-card__glow {
  position: absolute;
  right: -140px;
  bottom: -180px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(255,116,36,.22);
  filter: blur(65px);
}

.concept-card > p {
  position: relative;
  color: #ff9d57;
  font-size: 11px;
  letter-spacing: .24em;
}

.concept-card h3 {
  position: relative;
  margin: 32px 0 64px;
  font-size: clamp(2rem, 4vw, 3.7rem);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: -.04em;
}

.concept-card ul {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.concept-card li {
  display: flex;
  gap: 18px;
  padding: 14px 0;
  border-top: 1px solid rgba(255,255,255,.1);
  color: rgba(255,255,255,.72);
}

.concept-card li span {
  color: rgba(255,255,255,.3);
}

.demo-toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 10000;
  display: grid;
  max-width: 360px;
  gap: 6px;
  padding: 18px 20px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 16px;
  background: rgba(18,18,18,.94);
  color: #fff;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
  opacity: 0;
  backdrop-filter: blur(20px);
  transform: translateY(14px);
  transition: opacity .3s ease, transform .3s ease;
}

.demo-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.demo-toast strong { font-size: 14px; }
.demo-toast span { color: rgba(255,255,255,.62); font-size: 13px; line-height: 1.5; }

@media (max-width: 680px) {
  .demo-notice {
    top: 10px;
    width: max-content;
    max-width: calc(100% - 24px);
    font-size: 9px;
  }

  .concept-card { min-height: 410px; }
  .demo-toast { right: 14px; bottom: 14px; left: 14px; }
}