*{box-sizing:border-box}
html,body{margin:0;min-height:100%;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
body{min-height:100vh;display:grid;place-items:center;overflow:hidden;color:#fff8fd;background:#100811}
.bg{position:fixed;inset:0;overflow:hidden;background:
radial-gradient(circle at 18% 24%,rgba(255,112,173,.19),transparent 32%),
radial-gradient(circle at 82% 76%,rgba(179,100,255,.17),transparent 34%),
linear-gradient(135deg,#100811,#1b0e1e 52%,#100811)}
.bg:before{content:"";position:absolute;inset:-45%;background:conic-gradient(from 90deg,transparent,rgba(255,113,177,.09),transparent 30%,rgba(192,105,255,.09),transparent 65%);animation:spin 18s linear infinite}
.bg:after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1px);background-size:42px 42px;opacity:.12;animation:drift 20s linear infinite}
.card{position:relative;width:min(680px,calc(100% - 32px));padding:56px 34px;text-align:center;border:1px solid rgba(255,255,255,.11);border-radius:28px;background:rgba(24,12,28,.72);backdrop-filter:blur(22px);box-shadow:0 30px 90px rgba(0,0,0,.48),inset 0 1px rgba(255,255,255,.07);animation:enter .8s cubic-bezier(.2,.8,.2,1) both}
.heart{width:78px;height:78px;margin:0 auto 22px;border-radius:24px;display:grid;place-items:center;font-size:50px;line-height:1;color:#fff5fa;background:linear-gradient(135deg,#ff70a8,#bd73ec);box-shadow:0 0 45px rgba(255,112,168,.34);animation:float 4s ease-in-out infinite}
h1{margin:0;font-size:clamp(36px,7vw,58px);font-weight:700;letter-spacing:-1.8px}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes drift{to{transform:translate3d(42px,42px,0)}}
@keyframes enter{from{opacity:0;transform:translateY(24px) scale(.97)}to{opacity:1;transform:none}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@media(max-width:520px){.card{padding:42px 22px;border-radius:22px}.heart{width:68px;height:68px}}
@media(prefers-reduced-motion:reduce){.bg:before,.bg:after,.card,.heart{animation:none}}