body {
    overflow-x: hidden;
}

/* ==========================================
   畫廊總大標題 (Page Header)
   ========================================== */
.gallery-page-header {
    text-align: center;
    margin: 60px auto 100px; 
    padding: 0 20px;
    position: relative;
    z-index: 10;
}

.gallery-page-header .massive-title {
    font-family: 'Cinzel', 'Noto Serif TC', serif;
    font-size: 5rem;
    font-weight: 700;
    color: var(--heading-color);
    margin: 0;
    letter-spacing: 10px;
    text-transform: uppercase;
    line-height: 1.1;
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.gallery-page-header .sub-title {
    font-size: 1.2rem;
    color: var(--c3-cold-smoke);
    letter-spacing: 6px;
    margin: 15px 0 35px;
}

.gallery-page-header .title-divider {
    width: 80px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 0 auto;
    border-radius: 2px;
    position: relative;
}

.gallery-page-header .title-divider::before,
.gallery-page-header .title-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 28px;
    height: 1px;
    background-color: var(--c3-cold-smoke);
    opacity: 0.5;
}

.gallery-page-header .title-divider::before {
    right: 100%;
    margin-right: 14px;
}

.gallery-page-header .title-divider::after {
    left: 100%;
    margin-left: 14px;
}

@media screen and (max-width: 992px) {
    .gallery-page-header {
        margin: 40px auto 60px;
    }
    .gallery-page-header .massive-title {
        font-size: 2.8rem;
        letter-spacing: 5px;
    }
    .gallery-page-header .sub-title {
        font-size: 1rem;
        letter-spacing: 3px;
        margin: 10px 0 25px;
    }
}

/* ==========================================
   設定集/雜誌風 畫廊排版 (Editorial Gallery)
   ========================================== */
.editorial-gallery {
    display: flex;
    flex-direction: column;
    gap: 100px;
    padding: 40px 20px 100px;
    counter-reset: project;
}

.art-spread {
    display: grid;
    gap: 40px;
    align-items: center;
    position: relative;
    padding: 40px;
    border-radius: 16px;
    z-index: 1;
    counter-increment: project;
    overflow: visible;
}

.art-spread::before {
    content: counter(project, decimal-leading-zero);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'Cinzel', serif;
    font-size: clamp(9rem, 24vw, 22rem);
    font-weight: 700;
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--spread-line, var(--accent-color));
    letter-spacing: 0.04em;
    opacity: 0.16;
    white-space: nowrap;
    pointer-events: none;
    z-index: 0;
}

.art-spread::after {
    content: '';
    position: absolute;
    top: 24px;
    width: 220px;
    height: 220px;
    background-image: radial-gradient(var(--spread-line, var(--accent-color)) 1px, transparent 1.6px);
    background-size: 15px 15px;
    opacity: 0.28;
    -webkit-mask-image: radial-gradient(circle at center, black 0%, transparent 72%);
    mask-image: radial-gradient(circle at center, black 0%, transparent 72%);
    pointer-events: none;
    z-index: 0;
}

.layout-left::after { right: 24px; }
.layout-right::after { left: 24px; }

.layout-left { grid-template-columns: minmax(320px, 1.4fr) minmax(280px, 1fr); }
.layout-right { grid-template-columns: minmax(280px, 1fr) minmax(320px, 1.4fr); }

.spread-bg {
    position: absolute;
    top: 0; 
    left: 50%;
    width: 100vw;
    transform: translateX(-50%);
    height: 100%;
    border-radius: 0;
    z-index: -1;
    opacity: 0.6;
    transition: opacity 0.5s ease;
}

.spread-bg::before,
.spread-bg::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--spread-line, var(--accent-color));
    opacity: 0.55;
}
.spread-bg::before { top: 0; }
.spread-bg::after { bottom: 0; }

.layout-left .spread-bg {
   background: linear-gradient(135deg, var(--spread-color, var(--c5-winter-milk)) 0%, transparent 70%);
   border-left: 4px solid var(--spread-line, var(--accent-color));
}

.layout-right .spread-bg {
    background: linear-gradient(-135deg, var(--spread-color, var(--c5-winter-milk)) 0%, transparent 70%);
    border-right: 4px solid var(--spread-line, var(--accent-color));
}

.art-spread:hover .spread-bg { opacity: 1; }

.spread-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
    position: relative;
    z-index: 1;
}

.editorial-text .spread-id {
    font-family: 'Cinzel', serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--spread-id-color, var(--c3-cold-smoke));
    letter-spacing: 4px;
    display: block;
    margin-bottom: 10px;
    position: relative;
    padding-left: 26px;
    z-index: 1;
}

.editorial-text .spread-id::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 16px;
    height: 1px;
    background: var(--spread-line, var(--accent-color));
    transform: translateY(-50%);
}

.editorial-text .spread-id::after {
    content: '';
    position: absolute;
    left: 18px;
    top: 50%;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--spread-line, var(--accent-color));
    transform: translateY(-50%);
}

.editorial-text h3 {
    position: relative;
    font-size: 2.2rem;
    color: var(--spread-heading, var(--heading-color));
    margin: 0 0 34px 0;
    line-height: 1.2;
    z-index: 1;
}

.editorial-text h3::after {
    content: '';
    position: absolute;
    left: 2px;
    bottom: -18px;
    width: 9px;
    height: 9px;
    background: var(--spread-color, var(--accent-color));
    box-shadow:
        15px 0 0 var(--spread-line, var(--accent-color)),
        30px 0 0 color-mix(in srgb, var(--spread-color, var(--accent-color)) 55%, white),
        45px 0 0 color-mix(in srgb, var(--spread-line, var(--accent-color)) 65%, black);
}

.editorial-text p {
    position: relative;
    color: var(--spread-text, var(--text-color));
    line-height: 1.8;
    font-size: 0.95rem;
    border-left: 2px solid var(--spread-line, var(--accent-color));
    padding-left: 15px;
}

.editorial-text p::before {
    content: '';
    position: absolute;
    left: -2px;
    top: 0;
    bottom: 0;
    width: 6px;
    background-image: repeating-linear-gradient(
        to bottom,
        var(--spread-line, var(--accent-color)) 0,
        var(--spread-line, var(--accent-color)) 1px,
        transparent 1px,
        transparent 16px
    );
    opacity: 0.65;
    pointer-events: none;
}

.detail-grid-asym {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    position: relative;
    padding-top: 16px;
    border-top: 1px dashed var(--spread-line, var(--accent-color));
}

.detail-grid-asym::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 0;
    width: 6px;
    height: 6px;
    background: var(--spread-line, var(--accent-color));
}

.detail-grid-asym::after {
    content: 'DETAIL';
    position: absolute;
    top: -9px;
    left: 12px;
    font-family: 'Cinzel', serif;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--spread-color);
    background: var(--bg-color);
    padding: 0 6px 0 6px;
}

.detail-grid-asym img:first-child {
    grid-column: 1 / -1; 
}

.detail-grid-asym:has(img:only-child) {
    grid-template-columns: 1fr;
}

.detail-grid-asym img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ==========================================
   雜誌風主圖區塊：底圖與立繪疊加處理
   ========================================== */
.spread-hero {
    position: relative;
    z-index: 2;
    --sprite-h: clamp(320px, 38vw, 560px);
}

.spread-hero .hero-base {
    width: 100%;
    aspect-ratio: 21 / 9;
    object-fit: cover; 
    clip-path: polygon(30px 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%, 0 30px);
    border-radius: 0;
    filter: drop-shadow(0 10px 15px rgba(78, 98, 106, 0.2)); 
    display: block;
    background-color: var(--c4-winter-mist);
    color: transparent;
    opacity: 0.5;
}

.spread-hero .hero-sprite {
    position: absolute;
    bottom: clamp(-38%, -13vw, -22%);
    left: 10%;
    height: var(--sprite-h);
    width: auto;
    max-width: none; 
    object-fit: contain; 
    display: block;
    z-index: 3;
    filter: drop-shadow(8px 10px 15px rgba(0, 0, 0, 0.25));
    pointer-events: none;
}

/* 響應式調整 */
@media screen and (max-width: 960px) {
    .layout-left, .layout-right {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 25px 15px;
    }
    .art-spread::before {
        font-size: clamp(6rem, 30vw, 11rem);
        opacity: 0.12;
    }
    .art-spread::after {
        width: 150px;
        height: 150px;
        opacity: 0.2;
    }
    .layout-right .spread-hero { order: -1; }
    .editorial-text h3 { font-size: 1.8rem; }
    
    .layout-left .spread-bg, .layout-right .spread-bg {
        background: linear-gradient(180deg, var(--spread-color, var(--c5-winter-milk)) 0%, transparent 100%);
        border: none;
        border-top: 4px solid var(--spread-line, var(--accent-color));
    }

    .spread-hero {
        --sprite-overflow: clamp(80px, 24vw, 210px);
        margin-top: 50px;
        margin-bottom: var(--sprite-overflow);
    }

    .spread-hero .hero-sprite {
        width: auto;
        height: clamp(240px, 72.6vw, 640px);
        max-width: 80%;       
        object-fit: contain;
        left: 50%;
        transform: translateX(-50%);
        bottom: calc(-1 * var(--sprite-overflow));
    }
}

@media screen and (max-width: 480px) {
    .spread-hero .hero-sprite {
        max-width: 95%; 
    }
}

/* ==========================================
   電腦版：全螢幕寬高滿版 (Full Viewport Slide)
   ========================================== */
@media screen and (min-width: 992px) {
    main.container.editorial-gallery {
        max-width: 100%;
        padding-left: 4vw;  
        padding-right: 4vw;
        gap: 0;
        padding-top: 0;
        padding-bottom: 0;
    }

    .art-spread {
        min-height: calc(100vh - 80px);
        max-height: 1400px;
        width: 100%; 
        max-width: 1600px;
        margin: 0 auto;
        align-content: center;
        padding-top: 40px;
        padding-bottom: 40px;
    }
}