:root{--brand:#7c3aed;--bg:#0b1020;--fg:#f4f4f5}
*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:-apple-system,system-ui,sans-serif;min-height:100vh}
.app-header{display:flex;align-items:center;justify-content:space-between;padding:16px;background:linear-gradient(90deg,var(--brand),#ec4899);box-shadow:0 6px 24px rgba(0,0,0,.25)}
.app-header h1{margin:0;font-size:20px;font-weight:700}
.app-header button{background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.3);color:#fff;padding:6px 12px;border-radius:8px;font-weight:600;cursor:pointer}
main{padding:24px}.hero{max-width:560px;margin:48px auto;text-align:center}
.hero h2{font-size:32px;margin:0 0 12px}
.hero p{color:#a1a1aa;margin:0 0 24px}
.hero button{background:var(--brand);border:0;color:#fff;padding:12px 24px;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer;box-shadow:0 8px 24px rgba(124,58,237,.4)}
.hero button:active{transform:translateY(1px)}

.big{font-size:96px;font-weight:900;text-align:center;margin:20px 0}
.row{display:flex;justify-content:center;gap:12px}
.row button{font-size:24px;width:64px;height:64px;border-radius:50%;background:var(--brand);color:#fff;border:0;cursor:pointer}