:root { --btnSize: 110px; --ringR: 110; }

.stage-desktop { display: block; }
@media (max-width: 767px) {
    .stage-desktop { display: none; }
}

.stage-desktop.stage {
    position: fixed;
    right: -62px;
    top: 65%;
    transform: translateY(-50%);
    width: 420px;
    height: 420px;
    z-index: 10;
}

.stage-desktop .pulse-btn {
    position: absolute;
    inset: 0;
    margin: auto;
    width: var(--btnSize);
    height: var(--btnSize);
    border-radius: 50%;
    background: linear-gradient(135deg, #ff4d4d, #ff914d);
    color: #fff;
    font-size: 28px;
    border: none;
    cursor: pointer;
    z-index: 2;
    box-shadow: 0 0 25px rgba(255, 100, 100, 0.7);
    transition: transform 0.15s ease, box-shadow 0.2s ease;
}

.stage-desktop .pulse-btn:hover { transform: scale(1.06); box-shadow: 0 0 40px rgba(255, 100, 100, 0.9); }
.stage-desktop .pulse-btn:active { transform: scale(0.98); }

.stage-desktop .pulse-btn::before,
.stage-desktop .pulse-btn::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: rgba(255, 100, 100, 0.5);
    transform: translate(-50%, -50%) scale(1);
    z-index: -1;
    animation: ptr-pulse 2s infinite;
}

.stage-desktop .pulse-btn::after { animation-delay: 1s; }

@keyframes ptr-pulse {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
    100% { transform: translate(-50%, -50%) scale(2.8); opacity: 0; }
}

.stage-desktop .ring {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 169px;
    height: 260px;
    z-index: 1;
    animation: ptr-spin 12s linear infinite;
}

@keyframes ptr-spin { to { transform: rotate(360deg); } }

.stage-desktop .ring text,
.stage-mobile .ring text {
    font-weight: 700;
    font-size: 32px;
    letter-spacing: 2px;
    fill: #ffbf8a;
    filter: drop-shadow(0 0 6px rgba(255, 160, 110, 0.45)) drop-shadow(0 0 14px rgba(255, 120, 90, 0.25));
    text-transform: uppercase;
}

.particle {
    position: fixed;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: gold;
    pointer-events: none;
    z-index: 9999;
    will-change: transform, opacity;
    animation: ptr-explode 1s forwards;
}

@keyframes ptr-explode {
    from { transform: translate(0, 0) scale(1); opacity: 1; }
    to { transform: translate(var(--x), var(--y)) scale(0.5); opacity: 0; }
}

.stage-mobile { display: none; }
@media (max-width: 767px) {
    .stage-mobile { display: block; }
}

.stage-mobile.stage {
    position: fixed;
    right: 0;
    bottom: 14px;
    width: 160px;
    height: 160px;
    z-index: 10;
    pointer-events: none;
}

.stage-mobile .ring {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 115px;
    height: 180px;
    z-index: 1;
    animation: ptr-spin 10s linear infinite;
}

.stage-mobile .ring text { font-size: 25px; }

.stage-mobile .pulse-btn {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 68px;
    height: 68px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff4d4d, #ff914d);
    border: none;
    cursor: pointer;
    box-shadow: 0 0 18px rgba(255, 100, 100, 0.7);
    transition: transform 0.15s ease, box-shadow 0.2s ease;
    pointer-events: auto;
}

.stage-mobile .pulse-btn::before,
.stage-mobile .pulse-btn::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: rgba(255, 100, 100, 0.45);
    transform: translate(-50%, -50%) scale(1);
    z-index: -1;
    animation: ptr-pulseM 2s infinite;
}

.stage-mobile .pulse-btn::after { animation-delay: 1s; }

@keyframes ptr-pulseM {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 0.55; }
    100% { transform: translate(-50%, -50%) scale(2.4); opacity: 0; }
}