.reader-book {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 28px;
    align-items: start;
}

.reader-sidebar {
    position: sticky;
    top: 24px;
    display: grid;
    gap: 18px;
}

.cover-panel,
.meta-panel,
.toc-panel {
    background: linear-gradient(180deg, rgba(63, 41, 29, 0.92), rgba(31, 20, 14, 0.98));
    border: 1px solid rgba(255, 234, 204, 0.12);
    border-radius: 24px;
    padding: 20px;
    box-shadow: var(--shadow);
}

.cover-panel img {
    width: 100%;
    aspect-ratio: 2 / 3;
    object-fit: cover;
    border-radius: 16px;
}

.meta-panel__label {
    margin: 0 0 8px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.72rem;
    color: var(--muted);
}
.meta-panel h1 {
    margin: 0 0 6px;
    font-family: 'Cormorant Garamond', serif;
    font-size: 2.4rem;
    line-height: 0.95;
}
.meta-panel__author,
.meta-panel__description { color: #ead8b8; }
.meta-panel__author { margin: 0 0 12px; }
.meta-panel__description { margin: 0; line-height: 1.6; }

.toc-panel h2 {
    margin: 0 0 14px;
    font-family: 'Cormorant Garamond', serif;
    font-size: 2rem;
}
.toc-panel ol {
    margin: 0;
    padding-left: 18px;
    display: grid;
    gap: 10px;
}
.toc-panel a {
    color: #f5e7cb;
    line-height: 1.45;
}
.toc-panel a.is-active {
    color: #ffcf8f;
    font-weight: 700;
}

.reader-stage__frame {
    display: grid;
    gap: 28px;
}

.page {
    position: relative;
    background:
        linear-gradient(180deg, #f5ecd8, #eadab9),
        radial-gradient(circle at top, rgba(255,255,255,0.45), transparent 30%);
    border-radius: 28px;
    border: 10px solid #59351f;
    box-shadow: 0 18px 45px rgba(0,0,0,0.35), inset 0 0 0 1px rgba(0,0,0,0.06);
    overflow: hidden;
}
.page::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(103, 65, 36, 0.15), transparent 6%, transparent 94%, rgba(103, 65, 36, 0.15)),
        repeating-linear-gradient(0deg, rgba(71, 46, 29, 0.02), rgba(71, 46, 29, 0.02) 2px, transparent 2px, transparent 5px);
    pointer-events: none;
}

.page__inner {
    position: relative;
    z-index: 1;
    padding: 42px 52px;
    color: var(--ink);
    min-height: 320px;
}
.page__inner--cover {
    min-height: 420px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
}
.page__sup {
    margin: 0 0 12px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.72rem;
    color: #6b4a2b;
}
.page__cover-title,
.page__inner h2,
.reader-pagination__viewport h2,
.reader-pagination__viewport h3 {
    font-family: 'Cormorant Garamond', serif;
}
.page__cover-title {
    margin: 0 0 8px;
    font-size: clamp(2.6rem, 4vw, 4.6rem);
    line-height: 0.9;
}
.page__cover-author {
    margin: 0 0 18px;
    font-size: 1.1rem;
    color: #5f4227;
}
.page__cover-description {
    max-width: 48ch;
    margin: 0 auto;
    line-height: 1.75;
}
.page__toc-list {
    margin: 20px 0 0;
    padding-left: 22px;
    display: grid;
    gap: 14px;
}
.page__toc-list a { color: #52351d; }

.reader-toolbar {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.reader-toolbar__chapter {
    color: #6b4b2c;
    font-weight: 700;
}
.reader-toolbar__actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.reader-pagination {
    display: grid;
    gap: 20px;
}
.reader-pagination__viewport {
    min-height: 560px;
    max-height: 560px;
    overflow: hidden;
    line-height: 1.85;
    font-size: 1.04rem;
    color: #2f2418;
}
.reader-pagination__viewport p:first-child,
.reader-pagination__viewport h2:first-child,
.reader-pagination__viewport h3:first-child { margin-top: 0; }
.reader-pagination__viewport p { margin: 0 0 1.05em; }
.reader-pagination__viewport h2 {
    font-size: 2.5rem;
    line-height: 0.95;
    margin: 0 0 22px;
}
.reader-pagination__viewport h3 {
    font-size: 1.85rem;
    margin: 28px 0 12px;
}
.reader-pagination__viewport blockquote {
    margin: 20px 0;
    padding: 12px 18px;
    border-left: 4px solid #8b6030;
    background: rgba(139, 96, 48, 0.08);
    font-style: italic;
}
.reader-pagination__viewport ul,
.reader-pagination__viewport ol {
    padding-left: 24px;
}
.reader-pagination__viewport hr {
    border: 0;
    border-top: 1px solid rgba(54, 35, 23, 0.18);
    margin: 28px 0;
}
.reader-pagination__source {
    position: absolute;
    left: -99999px;
    top: auto;
    width: 760px;
    visibility: hidden;
}
.reader-pagination__controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    color: #694627;
}

@media (max-width: 1060px) {
    .reader-book {
        grid-template-columns: 1fr;
    }

    .reader-sidebar {
        position: static;
    }
}

@media (max-width: 760px) {
    .page__inner {
        padding: 28px 22px;
    }

    .reader-pagination__viewport {
        min-height: 460px;
        max-height: 460px;
        font-size: 0.98rem;
    }

    .reader-pagination__controls {
        justify-content: center;
    }
}

.reader-toolbar__actions { display:flex; gap:10px; flex-wrap:wrap; }
.reader-pagination__viewport {
    transition: transform .28s ease, opacity .28s ease, box-shadow .28s ease;
    transform-origin: left center;
}
.reader-pagination__viewport.is-flipping-next {
    animation: flipNext .28s ease;
}
.reader-pagination__viewport.is-flipping-prev {
    animation: flipPrev .28s ease;
}
@keyframes flipNext {
    0% { opacity:.5; transform:perspective(1200px) rotateY(-10deg) translateX(8px); }
    100% { opacity:1; transform:perspective(1200px) rotateY(0) translateX(0); }
}
@keyframes flipPrev {
    0% { opacity:.5; transform:perspective(1200px) rotateY(10deg) translateX(-8px); }
    100% { opacity:1; transform:perspective(1200px) rotateY(0) translateX(0); }
}
.site-body.reader-night {
    background: radial-gradient(circle at top, #302820 0%, #17120f 65%, #0d0a08 100%);
}
.reader-night .reader-stage__frame,
.reader-night .page,
.reader-night .reader-pagination__viewport,
.reader-night .reader-sidebar,
.reader-night .meta-panel,
.reader-night .toc-panel {
    background: #221b16;
    color: #eee1cf;
}
.reader-night .page__sup,
.reader-night .meta-panel__label,
.reader-night .meta-panel__description,
.reader-night .toc-panel a,
.reader-night .reader-toolbar__chapter,
.reader-night #pageIndicator {
    color: #e1cfb7;
}
.reader-night .reader-pagination__viewport blockquote {
    background: rgba(255,255,255,0.06);
    border-left-color: #d1a36d;
}
.reader-night .reader-pagination__viewport hr {
    border-top-color: rgba(255,255,255,0.18);
}