/* Style 4: Tsawq-like catalog viewer */
.catalog-s4-ts {
    --catalog-skin-accent: var(--color-primary, #0ea5e9);
    max-width: 1360px;
    margin: 0.35rem auto 1.5rem;
    padding: 0 0.9rem;
}

.catalog-s4-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem 0.45rem;
    margin: 0 0 0.45rem;
    padding: 0.35rem 0.55rem;
    font-size: 0.82rem;
    color: #475569;
    border: 1px solid #e2e8f0;
    border-radius: 0;
    background: #f8fafc;
}

.catalog-s4-breadcrumb a {
    color: #0f172a;
    text-decoration: none;
    font-weight: 600;
}

.catalog-s4-breadcrumb a:hover {
    color: var(--catalog-skin-accent);
    text-decoration: underline;
}

.catalog-s4-breadcrumb-sep {
    color: #94a3b8;
    user-select: none;
}

.catalog-s4-breadcrumb > span:last-child {
    color: #64748b;
    font-weight: 500;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.catalog-s4-intro {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 1rem;
    align-items: start;
    margin-bottom: 0.75rem;
    border: 1px solid #dbe2ea;
    border-radius: 0;
    background: #fff;
    padding: 0.8rem;
}

.catalog-s4-intro-cover {
    border: 1px solid #e6ebf1;
    border-radius: 0;
    background: #f8fafc;
    overflow: hidden;
    min-height: 168px;
    display: grid;
    place-items: center;
}

.catalog-s4-intro-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.catalog-s4-intro-cover-empty {
    color: #64748b;
    font-size: 0.9rem;
}

.catalog-s4-intro-content {
    min-width: 0;
}

.catalog-s4-title-main {
    margin: 0;
    font-size: clamp(1.3rem, 2.6vw, 2rem);
    line-height: 1.4;
    color: #0f172a;
}

.catalog-s4-intro-summary {
    margin: 0.55rem 0 0;
    font-size: 0.95rem;
    line-height: 1.8;
    color: #475569;
}

.catalog-s4-intro-meta {
    margin: 0.7rem 0 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.84rem;
    color: #334155;
}

.catalog-s4-intro-meta span {
    border: 1px solid #e4e9ef;
    border-radius: 0;
    padding: 0.2rem 0.55rem;
    background: #f8fafc;
}

.catalog-s4-intro-meta .catalog-s4-status {
    border-color: transparent;
    color: #14532d;
    background: #dcfce7;
}

.catalog-s4-intro-meta .catalog-s4-status.expired {
    color: #991b1b;
    background: #fee2e2;
}

.catalog-s4-intro-block {
    margin-top: 0.9rem;
}

.catalog-s4-intro-block h2 {
    margin: 0 0 0.45rem;
    font-size: 1rem;
    color: #0f172a;
}

.catalog-s4-intro-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 0.45rem;
}

.catalog-s4-intro-links a {
    text-decoration: none;
    color: #0f172a;
    border: 1px solid #dbe2ea;
    border-radius: 0;
    padding: 0.45rem 0.55rem;
    background: #f8fafc;
    font-size: 0.84rem;
}

.catalog-s4-intro-stores {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 0.45rem;
}

.catalog-s4-store-chip {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    border: 1px solid #dbe2ea;
    border-radius: 0;
    padding: 0.4rem 0.5rem;
    text-decoration: none;
    color: #0f172a;
    background: #fff;
    min-width: 0;
}

.catalog-s4-store-chip img,
.catalog-s4-store-fallback {
    width: 28px;
    height: 28px;
    border-radius: 0;
    flex: 0 0 28px;
}

.catalog-s4-store-chip img {
    object-fit: cover;
    border: 1px solid #e2e8f0;
}

.catalog-s4-store-fallback {
    display: grid;
    place-items: center;
    background: #e2e8f0;
    color: #334155;
    font-size: 0.8rem;
    font-weight: 700;
}

.catalog-s4-store-chip span:last-child {
    font-size: 0.82rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.catalog-s4-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 1rem;
    align-items: start;
}

.catalog-s4-ad {
    margin-top: 0.65rem;
    border: 1px solid #dbe2ea;
    border-radius: 0;
    background: #fff;
    padding: 0.55rem 0.65rem;
}

.catalog-s4-ad.catalog-s4-ad--top {
    padding-bottom: 0.3rem;
}

.catalog-s4-ad-slot {
    width: 100%;
    margin: 0 auto;
    display: block;
    overflow: hidden;
}

/* Leaderboard / banner: fluid width; height from placeholder (matches render_ad lazy defaults). */
.catalog-s4-ad--top .catalog-fixed-ad-placeholder,
.catalog-s4-ad--top .catalog-s4-ad-slot {
    width: 100%;
    max-width: 728px;
    margin-inline: auto;
}

.catalog-s4-ad--bottom .catalog-fixed-ad-placeholder,
.catalog-s4-ad--bottom .catalog-s4-ad-slot {
    width: min(100%, 320px);
    max-width: 320px;
    min-height: 100px;
    margin-inline: auto;
}

.catalog-s4-ad--rail .catalog-inline-ad-placeholder,
.catalog-s4-ad--rail .catalog-s4-ad-slot {
    width: 300px;
    max-width: 100%;
    height: 600px;
    min-height: 600px;
    margin-inline: auto;
    box-sizing: border-box;
}

/* Between canvas and rail on narrow layouts (replaces sidebar skyscraper). */
.catalog-s4-ad--rail-mobile {
    display: none;
}

.catalog-s4-ad--rail-mobile .catalog-inline-ad-placeholder,
.catalog-s4-ad--rail-mobile .catalog-s4-ad-slot {
    width: 300px;
    max-width: 100%;
    height: 600px;
    min-height: 600px;
    margin-inline: auto;
    box-sizing: border-box;
}

@media (min-width: 1025px) {
    .catalog-s4-ad--rail-mobile {
        display: none !important;
    }

    .catalog-s4-ad--rail {
        display: block;
    }
}

@media (max-width: 1024px) {
    .catalog-s4-ad--rail {
        display: none !important;
    }

    .catalog-s4-ad--rail-mobile {
        display: block;
    }
}

.catalog-s4-canvas-card,
.catalog-s4-rail,
.catalog-s4-related {
    border: 1px solid #dbe2ea;
    border-radius: 0;
    background: #fff;
}

.catalog-s4-canvas-subtitle {
    margin: 0;
    padding: 0.9rem 1rem 0.4rem;
    font-size: clamp(1rem, 2.5cqw, 1.2rem);
    font-weight: 600;
    line-height: 1.35;
    color: #0f172a;
    border-bottom: 1px solid #ecf0f4;
}

.catalog-s4-canvas-card > .catalog-s4-empty {
    padding-top: 0.5rem;
}

.catalog-s4-canvas-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.6rem;
    padding: 0.65rem 0.8rem;
    border-bottom: 1px solid #ecf0f4;
}

.catalog-s4-toolbar-left {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-size: 0.9rem;
    color: #334155;
}

.catalog-s4-status {
    display: inline-flex;
    align-items: center;
    border-radius: 0;
    padding: 0.2rem 0.55rem;
    font-size: 0.76rem;
    font-weight: 700;
    color: #14532d;
    background: #dcfce7;
}

.catalog-s4-status.expired {
    color: #991b1b;
    background: #fee2e2;
}

.catalog-s4-toolbar-right {
    display: flex;
    gap: 0.4rem;
}

.catalog-s4-nav-btn {
    border: 1px solid #dbe2ea;
    background: #f8fafc;
    color: #0f172a;
    width: 36px;
    height: 36px;
    border-radius: 0;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.catalog-s4-nav-btn svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.9;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.catalog-s4-nav-btn .icon-minimize {
    display: none;
}

.catalog-s4-nav-btn.is-fullscreen .icon-maximize {
    display: none;
}

.catalog-s4-nav-btn.is-fullscreen .icon-minimize {
    display: block;
}

.catalog-s4-nav-btn:hover {
    background: var(--catalog-skin-accent);
    border-color: var(--catalog-skin-accent);
    color: #fff;
}

.catalog-s4-nav-btn:disabled {
    opacity: 0.38;
    cursor: not-allowed;
    pointer-events: none;
}

.catalog-s4-figure {
    margin: 0;
    min-height: 68vh;
    max-height: 84vh;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: stretch;
    background: #f1f5f9;
    border-bottom: 1px solid #ecf0f4;
}

.catalog-s4-swiper {
    flex: 1 1 auto;
    min-height: 0;
    width: 100%;
    max-width: 100%;
    overflow: hidden;
    overscroll-behavior-x: contain;
}

.catalog-s4-swiper .swiper-slide {
    display: flex;
    align-items: stretch;
    justify-content: center;
    min-height: 68vh;
    height: auto;
    box-sizing: border-box;
}

.catalog-s4-swiper .swiper-zoom-container {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 0;
    box-sizing: border-box;
    padding: 0.35rem;
}

.catalog-s4-swiper .swiper-zoom-container img {
    max-width: 100%;
    max-height: 82vh;
    width: auto;
    height: auto;
    object-fit: contain;
    object-position: center center;
    display: block;
    cursor: zoom-in;
    user-select: none;
    -webkit-user-drag: none;
    -webkit-touch-callout: none;
}

.catalog-s4-swiper .swiper-slide-zoomed .swiper-zoom-container img {
    cursor: grab;
}

.catalog-s4-swiper .swiper-slide-zoomed .swiper-zoom-container img:active {
    cursor: grabbing;
}

.catalog-s4-canvas-controls {
    display: grid;
    grid-template-columns: minmax(36px, auto) minmax(0, 1fr) minmax(36px, auto);
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 0.75rem 0.7rem;
    border-top: 1px solid #ecf0f4;
    background: #fff;
}

/* RTL: mirror bar so «previous» sits on the reading-start side (inline-end), «next» on inline-start — matches Swiper rtl. */
[dir="rtl"] .catalog-s4-canvas-controls {
    direction: rtl;
}

/* Chevron paths are authored for LTR; flip so each arrow matches its edge after the bar mirrors in RTL. */
[dir="rtl"] .catalog-s4-canvas-controls > .catalog-s4-nav-btn[data-prev] svg,
[dir="rtl"] .catalog-s4-canvas-controls > .catalog-s4-nav-btn[data-next] svg {
    transform: scaleX(-1);
}

/* Keep toolbar icons + numeric counter in a consistent LTR strip inside the bar (common for bilingual UIs). */
[dir="rtl"] .catalog-s4-controls-middle {
    direction: ltr;
}

.catalog-s4-controls-middle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    min-width: 0;
}

.catalog-s4-controls-middle strong {
    margin-inline-start: 0.25rem;
    font-size: 0.86rem;
    color: #334155;
    white-space: nowrap;
}

.catalog-s4-rail {
    padding: 0.8rem;
    position: sticky;
    top: 0.8rem;
    max-height: calc(100vh - 1.2rem);
    overflow: auto;
}

.catalog-s4-title {
    margin: 0;
    font-size: 1.16rem;
    line-height: 1.5;
    color: #0f172a;
}

.catalog-s4-summary {
    margin: 0.55rem 0 0;
    font-size: 0.9rem;
    color: #475569;
    line-height: 1.75;
}

.catalog-s4-share {
    margin-top: 0.65rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.45rem;
}

.catalog-s4-share-icon {
    border: 1px solid #dbe2ea;
    background: #f8fafc;
    color: #0f172a;
    text-decoration: none;
    border-radius: 0;
    font-size: 0.84rem;
    font-weight: 600;
    padding: 0.45rem 0.65rem;
}

.catalog-s4-share-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    display: grid;
    place-items: center;
    border-radius: 0;
    transition: transform 0.16s ease, background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.catalog-s4-share-icon svg {
    width: 17px;
    height: 17px;
    fill: currentColor;
}

.catalog-s4-share-icon.is-copy svg {
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.catalog-s4-share-icon.is-facebook:hover {
    background: #1877f2;
    border-color: #1877f2;
    color: #fff;
}

.catalog-s4-share-icon.is-twitter:hover {
    background: #111827;
    border-color: #111827;
    color: #fff;
}

.catalog-s4-share-icon.is-whatsapp:hover {
    background: #25d366;
    border-color: #25d366;
    color: #fff;
}

.catalog-s4-share-icon.is-copy:hover,
.catalog-s4-share-icon.is-copy.is-copied {
    background: var(--catalog-skin-accent);
    border-color: var(--catalog-skin-accent);
    color: #fff;
}

.catalog-s4-share-icon:hover {
    transform: translateY(-1px);
}

.catalog-s4-share-icon.is-copy {
    cursor: pointer;
}

.catalog-s4-telegram {
    margin-top: 0.85rem;
}

.catalog-s4-telegram .catalog-telegram-banner--s4-rail {
    max-width: 100%;
    width: 100%;
    box-sizing: border-box;
    padding: 1.15rem 0.95rem;
}

.catalog-s4-telegram .catalog-telegram-banner-title {
    font-size: 1rem;
}

.catalog-s4-telegram .catalog-telegram-banner-desc {
    font-size: 0.8125rem;
}

.catalog-s4-telegram .catalog-telegram-banner-btn {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.catalog-s4-share .catalog-s4-next {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 1 1 auto;
    min-width: 0;
    min-height: 38px;
    margin-top: 0;
    padding: 0.4rem 0.55rem;
    border: 1px solid var(--catalog-skin-accent);
    border-radius: 0;
    background: var(--catalog-skin-accent);
    color: #fff;
    text-decoration: none;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.25;
    text-align: center;
    transition: filter 0.18s ease, transform 0.16s ease;
}

.catalog-s4-share .catalog-s4-next:hover {
    filter: brightness(0.94);
}


.catalog-s4-details {
    margin-top: 0.75rem;
    border: 1px solid #e7edf3;
    border-radius: 0;
    overflow: hidden;
}

.catalog-s4-details div {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.2rem;
    padding: 0.48rem 0.6rem;
    border-bottom: 1px solid #eef2f7;
}

.catalog-s4-details div:last-child {
    border-bottom: 0;
}

.catalog-s4-details dt {
    font-size: 0.76rem;
    color: #64748b;
}

.catalog-s4-details dd {
    margin: 0;
    font-size: 0.84rem;
    color: #0f172a;
}


.catalog-s4-related {
    margin-top: 1rem;
    padding: 0.75rem;
}

.catalog-s4-related h2 {
    margin: 0.2rem 0 0.55rem;
    font-size: 1rem;
    color: #0f172a;
}

.catalog-s4-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 0.45rem;
}

.catalog-s4-related-grid a {
    text-decoration: none;
    color: #0f172a;
    border: 1px solid #dbe2ea;
    border-radius: 0;
    padding: 0.48rem 0.58rem;
    background: #f8fafc;
}

.catalog-s4-empty {
    margin: 0;
    padding: 2rem 1rem;
    text-align: center;
    color: #64748b;
}

.catalog-s4-footer {
    margin-top: 1rem;
}

.catalog-s4-modal {
    position: fixed;
    inset: 0;
    z-index: 1300;
    display: none;
}

.catalog-s4-modal.is-open {
    display: block;
}

.catalog-s4-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(2, 6, 23, 0.6);
}

.catalog-s4-modal-dialog {
    position: relative;
    margin: min(5vh, 2rem) auto;
    width: min(900px, calc(100vw - 1.5rem));
    max-height: 90vh;
    border-radius: 0;
    border: 1px solid #dbe2ea;
    background: #fff;
    overflow: hidden;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
}

.catalog-s4-modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    border-bottom: 1px solid #e7edf3;
    padding: 0.7rem 0.85rem;
}

.catalog-s4-modal-head h2 {
    margin: 0;
    font-size: 0.96rem;
}

.catalog-s4-modal-close {
    width: 34px;
    height: 34px;
    border-radius: 0;
    border: 1px solid #dbe2ea;
    background: #f8fafc;
    display: grid;
    place-items: center;
    color: #0f172a;
    cursor: pointer;
}

.catalog-s4-modal-close svg {
    width: 17px;
    height: 17px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.catalog-s4-modal-grid {
    padding: 0.8rem;
    overflow: auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 0.55rem;
}

.catalog-s4-modal-thumb {
    border: 1px solid #dbe2ea;
    background: #fff;
    border-radius: 0;
    padding: 0.25rem;
    display: grid;
    gap: 0.25rem;
    cursor: pointer;
}

.catalog-s4-modal-thumb img {
    width: 100%;
    height: 132px;
    object-fit: cover;
    border-radius: 0;
}

.catalog-s4-modal-thumb span {
    font-size: 0.74rem;
    color: #64748b;
}

.catalog-s4-modal-thumb.is-active {
    border-color: var(--catalog-skin-accent);
    box-shadow: 0 0 0 1px var(--catalog-skin-accent) inset;
}

.catalog-s4-canvas-card.is-fullscreen,
.catalog-s4-canvas-card:fullscreen,
.catalog-s4-canvas-card:-webkit-full-screen {
    position: fixed;
    inset: 0;
    z-index: 1250;
    border-radius: 0;
    border: 0;
    margin: 0;
    width: 100%;
    max-width: 100%;
    height: 100vh;
    max-height: 100vh;
    min-height: -webkit-fill-available;
    height: 100dvh;
    max-height: 100dvh;
    display: flex;
    flex-direction: column;
    background: #e8edf5;
}

.catalog-s4-canvas-card.is-fullscreen .catalog-s4-canvas-subtitle,
.catalog-s4-canvas-card:fullscreen .catalog-s4-canvas-subtitle,
.catalog-s4-canvas-card:-webkit-full-screen .catalog-s4-canvas-subtitle {
    display: none;
}

.catalog-s4-canvas-card.is-fullscreen .catalog-s4-figure,
.catalog-s4-canvas-card:fullscreen .catalog-s4-figure,
.catalog-s4-canvas-card:-webkit-full-screen .catalog-s4-figure {
    flex: 1 1 auto;
    min-height: 0;
    max-height: none;
    border-bottom: 0;
    background: #e8edf5;
}

.catalog-s4-canvas-card.is-fullscreen .catalog-s4-swiper .swiper-slide,
.catalog-s4-canvas-card:fullscreen .catalog-s4-swiper .swiper-slide,
.catalog-s4-canvas-card:-webkit-full-screen .catalog-s4-swiper .swiper-slide {
    min-height: 0;
    height: 100%;
}

.catalog-s4-canvas-card.is-fullscreen .catalog-s4-swiper .swiper-zoom-container img,
.catalog-s4-canvas-card:fullscreen .catalog-s4-swiper .swiper-zoom-container img,
.catalog-s4-canvas-card:-webkit-full-screen .catalog-s4-swiper .swiper-zoom-container img {
    max-height: calc(100vh - 76px - env(safe-area-inset-bottom, 0px));
    max-height: calc(100dvh - 76px - env(safe-area-inset-bottom, 0px));
}

.catalog-s4-canvas-card.is-fullscreen .catalog-s4-canvas-controls,
.catalog-s4-canvas-card:fullscreen .catalog-s4-canvas-controls,
.catalog-s4-canvas-card:-webkit-full-screen .catalog-s4-canvas-controls {
    flex-shrink: 0;
    background: linear-gradient(180deg, #3d4a5c 0%, #1e2530 100%);
    border-top: 1px solid rgba(0, 0, 0, 0.22);
    box-shadow: 0 -8px 28px rgba(0, 0, 0, 0.22);
    padding: 0.5rem 0.85rem calc(0.5rem + env(safe-area-inset-bottom, 0px));
}

.catalog-s4-canvas-card.is-fullscreen .catalog-s4-nav-btn,
.catalog-s4-canvas-card:fullscreen .catalog-s4-nav-btn,
.catalog-s4-canvas-card:-webkit-full-screen .catalog-s4-nav-btn {
    background: var(--catalog-skin-accent);
    border-color: rgba(255, 255, 255, 0.28);
    color: #fff;
}

.catalog-s4-canvas-card.is-fullscreen .catalog-s4-nav-btn:hover,
.catalog-s4-canvas-card:fullscreen .catalog-s4-nav-btn:hover,
.catalog-s4-canvas-card:-webkit-full-screen .catalog-s4-nav-btn:hover {
    filter: brightness(1.08);
    color: #fff;
}

.catalog-s4-canvas-card.is-fullscreen .catalog-s4-controls-middle strong,
.catalog-s4-canvas-card:fullscreen .catalog-s4-controls-middle strong,
.catalog-s4-canvas-card:-webkit-full-screen .catalog-s4-controls-middle strong {
    color: #f8fafc;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.14);
    padding: 0.3rem 0.65rem;
    border-radius: 999px;
    font-weight: 700;
}

.catalog-s4-fullscreen-open {
    overflow: hidden;
}

.catalog-s4-related-section {
    margin-top: 1rem;
    border: 1px solid #dbe2ea;
    border-radius: 0;
    background: #fff;
    padding: 0.85rem;
}

.catalog-s4-related-section .catalog-s4-intro-block:first-child {
    margin-top: 0;
}

.catalog-s4-related-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 0.55rem;
}

.catalog-s4-related-card {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    align-items: center;
    gap: 0.5rem;
    border: 1px solid #dbe2ea;
    border-radius: 0;
    background: #fff;
    text-decoration: none;
    color: #0f172a;
    padding: 0.38rem;
}

.catalog-s4-related-card img,
.catalog-s4-related-card-fallback {
    width: 72px;
    height: 96px;
    border-radius: 0;
}

.catalog-s4-related-card img {
    display: block;
    object-fit: cover;
}

.catalog-s4-related-card-fallback {
    display: grid;
    place-items: center;
    background: #e2e8f0;
    color: #334155;
    font-size: 0.95rem;
    font-weight: 700;
}

.catalog-s4-related-card span:last-child {
    font-size: 0.82rem;
    line-height: 1.5;
}

.catalog-s4-faq {
    margin-top: 1rem;
    border: 1px solid #dbe2ea;
    border-radius: 0;
    background: #fff;
    padding: 0.85rem;
}

.catalog-s4-faq-title {
    margin: 0 0 0.55rem;
    font-size: 1.02rem;
    color: #0f172a;
}

.catalog-s4-faq-list {
    display: grid;
    gap: 0.5rem;
}

.catalog-s4-faq-item {
    border: 1px solid #e6ebf1;
    border-radius: 0;
    background: #fff;
    overflow: hidden;
}

.catalog-s4-faq-summary {
    padding: 0.6rem 0.7rem;
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: 600;
    color: #0f172a;
}

.catalog-s4-faq-answer {
    padding: 0 0.7rem 0.7rem;
    color: #475569;
    font-size: 0.88rem;
    line-height: 1.75;
}

.catalog-s4-faq-answer p {
    margin: 0;
}

@media (max-width: 1024px) {
    .catalog-s4-intro {
        grid-template-columns: 1fr;
        gap: 0.7rem;
        padding: 0.65rem;
    }

    .catalog-s4-intro-cover {
        min-height: 140px;
        max-height: 200px;
    }

    .catalog-s4-shell {
        grid-template-columns: 1fr;
    }

    .catalog-s4-ad--top .catalog-fixed-ad-placeholder,
    .catalog-s4-ad--top .catalog-s4-ad-slot {
        max-width: min(100%, 360px);
    }

    .catalog-s4-rail {
        position: static;
        max-height: none;
    }

    .catalog-s4-canvas-controls {
        padding-inline: 0.5rem;
    }
}

@media (max-width: 640px) {
    .catalog-s4-ts {
        max-width: 100%;
        padding-inline: 0;
        margin-top: 0.25rem;
    }

    .catalog-s4-breadcrumb {
        margin-inline: 0.65rem;
        border-radius: 0;
        font-size: 0.78rem;
    }

    .catalog-s4-breadcrumb > span:last-child {
        white-space: normal;
    }

    .catalog-s4-intro,
    .catalog-s4-canvas-card,
    .catalog-s4-rail,
    .catalog-s4-ad,
    .catalog-s4-related-section,
    .catalog-s4-faq {
        border-inline: 0;
        border-radius: 0;
    }

    .catalog-s4-breadcrumb {
        border-inline: 0;
        border-radius: 0;
        margin-inline: 0;
    }

    .catalog-s4-canvas-card {
        overflow: hidden;
        max-width: 100%;
    }

    .catalog-s4-figure {
        min-height: 48vh;
        min-height: min(48dvh, 420px);
        max-height: min(72vh, calc(100vh - 200px));
        max-height: min(72dvh, calc(100dvh - 200px));
    }

    .catalog-s4-swiper {
        min-height: 46vh;
        min-height: min(46dvh, 400px);
    }

    .catalog-s4-swiper .swiper-slide {
        min-height: 48vh;
        min-height: min(48dvh, 420px);
    }

    .catalog-s4-swiper .swiper-zoom-container img {
        max-height: min(66vh, calc(100vh - 220px));
        max-height: min(66dvh, calc(100dvh - 220px));
    }

    .catalog-s4-share {
        gap: 0.35rem;
        flex-wrap: wrap;
    }

    .catalog-s4-intro-links,
    .catalog-s4-intro-stores {
        grid-template-columns: 1fr;
    }

    .catalog-s4-related-cards {
        grid-template-columns: 1fr;
    }

    .catalog-s4-title-main {
        font-size: 1.12rem;
        line-height: 1.5;
    }

    .catalog-s4-intro-summary {
        font-size: 0.88rem;
        line-height: 1.7;
    }

    .catalog-s4-rail {
        padding: 0.65rem 0.85rem;
    }

    .catalog-s4-canvas-controls {
        display: grid;
        grid-template-columns: minmax(34px, auto) minmax(0, 1fr) minmax(34px, auto);
        gap: 0.35rem;
        padding: 0.45rem 0.5rem max(0.5rem, env(safe-area-inset-bottom, 0px));
    }

    .catalog-s4-controls-middle {
        gap: 0.3rem;
        flex-wrap: wrap;
        justify-content: center;
        max-width: 100%;
    }

    .catalog-s4-controls-middle strong {
        font-size: 0.78rem;
    }

    .catalog-s4-modal-dialog {
        width: min(calc(100% - 0.85rem), calc(100vw - 0.85rem));
        max-width: 100%;
        margin-top: 0.65rem;
        max-height: calc(100vh - 1.3rem);
        max-height: calc(100dvh - 1.3rem);
    }

    .catalog-s4-modal-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 0.45rem;
        padding: 0.6rem;
    }

    .catalog-s4-modal-thumb img {
        height: 110px;
    }
}

/* -------------------------------------------------------------------------- */
/* Dark theme (html[data-theme="dark"]) — tokens from v2.css                  */
/* -------------------------------------------------------------------------- */
[data-theme="dark"] .catalog-s4-breadcrumb {
    color: var(--text-muted);
    border-color: var(--border);
    background: var(--surface);
}

[data-theme="dark"] .catalog-s4-breadcrumb a {
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-breadcrumb a:hover {
    color: var(--primary);
}

[data-theme="dark"] .catalog-s4-breadcrumb-sep {
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-breadcrumb > span:last-child {
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-intro {
    border-color: var(--border);
    background: var(--surface);
}

[data-theme="dark"] .catalog-s4-intro-cover {
    border-color: var(--border);
    background: rgba(15, 23, 42, 0.65);
}

[data-theme="dark"] .catalog-s4-intro-cover-empty {
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-title-main {
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-intro-summary {
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-intro-meta {
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-intro-meta span {
    border-color: var(--border);
    background: rgba(15, 23, 42, 0.55);
}

[data-theme="dark"] .catalog-s4-intro-meta .catalog-s4-status {
    color: #86efac;
    background: rgba(34, 197, 94, 0.18);
}

[data-theme="dark"] .catalog-s4-intro-meta .catalog-s4-status.expired {
    color: #fca5a5;
    background: rgba(239, 68, 68, 0.16);
}

[data-theme="dark"] .catalog-s4-intro-block h2 {
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-intro-links a {
    color: var(--text);
    border-color: var(--border);
    background: rgba(15, 23, 42, 0.5);
}

[data-theme="dark"] .catalog-s4-store-chip {
    border-color: var(--border);
    color: var(--text);
    background: var(--surface);
}

[data-theme="dark"] .catalog-s4-store-chip img {
    border-color: var(--border);
}

[data-theme="dark"] .catalog-s4-store-fallback {
    background: rgba(51, 65, 85, 0.85);
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-ad {
    border-color: var(--border);
    background: var(--surface);
}

[data-theme="dark"] .catalog-s4-canvas-card,
[data-theme="dark"] .catalog-s4-rail,
[data-theme="dark"] .catalog-s4-related {
    border-color: var(--border);
    background: var(--surface);
}

[data-theme="dark"] .catalog-s4-canvas-subtitle {
    color: var(--text);
    border-bottom-color: var(--border);
}

[data-theme="dark"] .catalog-s4-canvas-toolbar {
    border-bottom-color: var(--border);
}

[data-theme="dark"] .catalog-s4-toolbar-left {
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-status {
    color: #86efac;
    background: rgba(34, 197, 94, 0.18);
}

[data-theme="dark"] .catalog-s4-status.expired {
    color: #fca5a5;
    background: rgba(239, 68, 68, 0.16);
}

[data-theme="dark"] .catalog-s4-nav-btn {
    border-color: var(--border);
    background: rgba(15, 23, 42, 0.55);
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-figure {
    background: #0f172a;
    border-bottom-color: var(--border);
}

[data-theme="dark"] .catalog-s4-canvas-controls {
    border-top-color: var(--border);
    background: var(--surface);
}

[data-theme="dark"] .catalog-s4-controls-middle strong {
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-title {
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-summary {
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-share-icon {
    border-color: var(--border);
    background: rgba(15, 23, 42, 0.55);
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-share-icon.is-twitter:hover {
    background: #e2e8f0;
    border-color: #e2e8f0;
    color: #0f172a;
}

[data-theme="dark"] .catalog-s4-details {
    border-color: var(--border);
}

[data-theme="dark"] .catalog-s4-details div {
    border-bottom-color: var(--border);
}

[data-theme="dark"] .catalog-s4-details dt {
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-details dd {
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-related h2 {
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-related-grid a {
    color: var(--text);
    border-color: var(--border);
    background: rgba(15, 23, 42, 0.5);
}

[data-theme="dark"] .catalog-s4-empty {
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-modal-backdrop {
    background: rgba(2, 6, 23, 0.78);
}

[data-theme="dark"] .catalog-s4-modal-dialog {
    border-color: var(--border);
    background: var(--surface);
}

[data-theme="dark"] .catalog-s4-modal-head {
    border-bottom-color: var(--border);
}

[data-theme="dark"] .catalog-s4-modal-head h2 {
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-modal-close {
    border-color: var(--border);
    background: rgba(15, 23, 42, 0.55);
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-modal-thumb {
    border-color: var(--border);
    background: var(--surface);
}

[data-theme="dark"] .catalog-s4-modal-thumb span {
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-canvas-card.is-fullscreen,
[data-theme="dark"] .catalog-s4-canvas-card:fullscreen,
[data-theme="dark"] .catalog-s4-canvas-card:-webkit-full-screen {
    background: #0f172a;
}

[data-theme="dark"] .catalog-s4-canvas-card.is-fullscreen .catalog-s4-figure,
[data-theme="dark"] .catalog-s4-canvas-card:fullscreen .catalog-s4-figure,
[data-theme="dark"] .catalog-s4-canvas-card:-webkit-full-screen .catalog-s4-figure {
    background: #0f172a;
}

[data-theme="dark"] .catalog-s4-related-section {
    border-color: var(--border);
    background: var(--surface);
}

[data-theme="dark"] .catalog-s4-related-card {
    border-color: var(--border);
    background: var(--surface);
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-related-card-fallback {
    background: rgba(51, 65, 85, 0.85);
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-faq {
    border-color: var(--border);
    background: var(--surface);
}

[data-theme="dark"] .catalog-s4-faq-title {
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-faq-item {
    border-color: var(--border);
    background: rgba(15, 23, 42, 0.35);
}

[data-theme="dark"] .catalog-s4-faq-summary {
    color: var(--text);
}

[data-theme="dark"] .catalog-s4-faq-answer {
    color: var(--text-muted);
}

[data-theme="dark"] .catalog-s4-telegram .catalog-telegram-banner {
    background: linear-gradient(145deg, rgba(0, 136, 204, 0.14) 0%, rgba(0, 136, 204, 0.04) 100%);
    border-color: rgba(56, 189, 248, 0.28);
    box-shadow: var(--shadow-md);
}