.flipbook-shell {
    --flip-zoom: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background:
        radial-gradient(1200px 600px at 80% -10%, rgba(180, 40, 60, 0.12), transparent 55%),
        linear-gradient(180deg, #1a1418 0%, #2a2228 45%, #1c171b 100%);
    color: #f5efe8;
    font-family: Tahoma, "Segoe UI", sans-serif;
}

.flipbook-shell * { box-sizing: border-box; }

.flipbook-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255,255,255,.08);
    background: rgba(0,0,0,.22);
    backdrop-filter: blur(8px);
}

.flipbook-top h1 {
    margin: 0;
    font-size: 15px;
    font-weight: 700;
    line-height: 1.4;
}

.flipbook-top .acts {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.flipbook-top a,
.flipbook-top button {
    appearance: none;
    border: 1px solid rgba(255,255,255,.18);
    background: rgba(255,255,255,.06);
    color: #f5efe8;
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 13px;
    cursor: pointer;
    text-decoration: none;
}

.flipbook-top a.brand,
.flipbook-top button.brand {
    background: #b4233a;
    border-color: #b4233a;
}

.flipbook-top a:hover,
.flipbook-top button:hover { background: rgba(255,255,255,.12); }
.flipbook-top a.brand:hover,
.flipbook-top button.brand:hover { background: #9a1d31; }

.flipbook-stage {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 18px 12px 28px;
    gap: 16px;
}

.flipbook-stage .book-wrap {
    transform: scale(var(--flip-zoom));
    transform-origin: center center;
    transition: transform .2s ease;
    width: min(960px, 96vw);
    max-width: 100%;
}

#flipbook {
    margin: 0 auto;
}

.flipbook-status {
    padding: 10px 14px;
    border-radius: 10px;
    background: rgba(0,0,0,.35);
    font-size: 13px;
}

.flipbook-status.is-error {
    background: rgba(180, 35, 55, .35);
    border: 1px solid rgba(255,120,140,.35);
}

.flipbook-nav {
    display: flex;
    align-items: center;
    gap: 12px;
    user-select: none;
}

.flipbook-nav button {
    width: 44px;
    height: 44px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,.2);
    background: rgba(255,255,255,.08);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
}

.flipbook-nav button:hover { background: rgba(255,255,255,.16); }

.flipbook-nav .pg {
    min-width: 110px;
    text-align: center;
    font-weight: 700;
    font-size: 14px;
    font-variant-numeric: tabular-nums;
}

.flipbook-news {
    max-width: 960px;
    width: 100%;
    margin: 0 auto 28px;
    padding: 0 16px;
}

.flipbook-news h2 {
    font-size: 15px;
    margin: 0 0 10px;
}

.flipbook-news ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 6px;
}

.flipbook-news a {
    color: #ffd3da;
    text-decoration: none;
    font-size: 13px;
}

.flipbook-news a:hover { text-decoration: underline; }

@media (max-width: 700px) {
    .flipbook-top { flex-direction: column; align-items: stretch; }
    .flipbook-top .acts { justify-content: flex-start; }
}