.flipbook{text-align:center;padding:70px 16px 80px;background:linear-gradient(180deg,#bfe7f3,#fffdf7);border-radius:var(--radius);box-shadow:0 15px 60px rgba(18,63,98,.06)}
.flipbook h2{margin:6px 0 24px}
.fb-stage{max-width:780px;margin:0 auto;filter:drop-shadow(0 28px 40px rgba(18,63,98,.25))}
.fb-page{background:#fff;overflow:hidden}
.fb-page img{width:100%;height:100%;object-fit:cover;display:block;user-select:none;pointer-events:none}
.fb-ctrl{display:flex;justify-content:center;align-items:center;gap:18px;margin-top:22px;font-weight:700}
.fb-ctrl button{border:0;border-radius:99px;padding:11px 22px;font:inherit;font-weight:800;background:var(--coral);color:#fff;cursor:pointer}
.fb-ctrl button:hover{background:#dc4e42}
.fb-tabs{display:inline-flex;gap:6px;padding:5px;margin-bottom:22px;background:rgba(18,63,98,.07);border-radius:99px}
.fb-tab{padding:9px 20px;border-radius:99px;font-size:13px;font-weight:800;color:var(--navy)}
.fb-tab[aria-selected="true"]{background:var(--navy);color:#fff}
/* spine: crease down the middle while the book is open on two pages */
.fb-stage{position:relative}
.fb-stage.fb-spread::after{content:'';position:absolute;top:0;bottom:0;left:calc(50% - 14px);width:28px;pointer-events:none;z-index:5;transition:opacity .15s;
  background:linear-gradient(90deg,rgba(0,0,0,0),rgba(0,0,0,.10) 40%,rgba(0,0,0,.22) 50%,rgba(0,0,0,.10) 60%,rgba(0,0,0,0))}
.fb-stage.fb-moving::after{opacity:0}
/* home page stacks sections by z-index; slot the book in after the showcase */
.flipbook{z-index:5}.explore{z-index:6}.shop{z-index:7}.cta-band{z-index:8}