* {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: auto;
    min-height: 100%;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    --vw-base: calc(100vw / 1920);
    background: #66696b;
}

html {
    overflow-y: auto;
}

body {
    overflow-y: visible;
}

body.project-page-page {
    color: #000000;
    font-family: "Raleway", sans-serif;
    -webkit-font-smoothing: antialiased;
}

.project-page-page .container,
.project-page-page .project-page-main {
    width: 100%;
    /* 以 1920 x 1080 的 PC 設計比例保留最小高度，視窗較矮時改由頁面滾動。 */
    min-height: max(100vh, calc(700 * var(--vw-base)));
    min-height: max(100dvh, calc(700 * var(--vw-base)));
}

.project-page-page .project-page-main {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    background-image: url("../img/project/bg1.jpg");
    background-repeat: repeat-y;
    background-position: center;
    background-size: cover;
}

.project-page-page .header ul,
.project-page-page .header li {
    list-style: none;
    margin: 0;
    padding: 0;
}

.project-page-page .header a,
.project-page-page .header a:link,
.project-page-page .header a:visited,
.project-page-page .header a:hover,
.project-page-page .header a:active {
    text-decoration: none;
}

.project-page-page .header .slog-marquee {
    clip-path: inset(0 0% 0 0);
}

.project-page-page .project-page-meta {
    position: absolute;
    left: calc(150 * var(--vw-base));
    top: 50%;
    bottom: auto;
    z-index: 5;
    display: grid;
    grid-template-columns: max-content max-content;
    column-gap: calc(15 * var(--vw-base));
    row-gap: calc(15 * var(--vw-base));
    transform: translateY(-50%);
    will-change: opacity;
}

.project-page-page .project-info-row {
    display: contents;
    font-size: calc(20 * var(--vw-base));
    letter-spacing: 0.05em;
    line-height: 1.15;
    white-space: nowrap;
}

.project-page-page .project-info-label {
    color: #ffffff;
    font-family: "Raleway", sans-serif;
    font-weight: 600;
    text-align: right;
}

.project-page-page .project-info-value {
    color: #f16d25;
    font-family: "Noto Sans TC", sans-serif;
    font-weight: 400;
    text-align: left;
}

/* 中央主圖：870 * vw-base，固定 16:9 */
.project-page-page .project-page-stage {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.project-page-page .project-main-image {
    position: relative;
    /* width: calc(900 * var(--vw-base)); */
    height: calc(489.375 * var(--vw-base));
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #111;
    box-shadow: 0 calc(12 * var(--vw-base)) calc(30 * var(--vw-base)) rgba(0, 0, 0, .28);
    will-change: transform, opacity;
}

.project-page-page .project-main-image img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

/* 右側 Gallery：最多顯示 7 張，超出後由 JS 向上位移 */
.project-page-page .project-page-gallery {
    position: absolute;
    right: calc(55 * var(--vw-base));
    top: calc(50% - calc(244.6875 * var(--vw-base)));
    bottom: auto;
    z-index: 6;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    width: calc(90 * var(--vw-base));
    height: calc(489.375 * var(--vw-base));
    will-change: transform, opacity;
}

.project-page-page .project-gallery-label {
    position: absolute;
    right: 0;
    bottom: calc(100% + calc(20 * var(--vw-base)));
    width: 100%;
    color: #ffffff;
    font-family: "Raleway", sans-serif;
    font-size: calc(16 * var(--vw-base));
    font-weight: 500;
    letter-spacing: 0.2em;
    line-height: 1;
    text-align: center;
}

.project-page-page .project-gallery-viewport {
    width: calc(90 * var(--vw-base));
    height: calc(489.375 * var(--vw-base));
    overflow: hidden;
}

.project-page-page .project-gallery-list {
    display: flex;
    flex-direction: column;
    gap: calc(23.2291667 * var(--vw-base));
    width: 100%;
    transition: transform .55s ease;
}

.project-page-page .project-gallery-item {
    position: relative;
    width: calc(90 * var(--vw-base));
    height: calc(50 * var(--vw-base));
    flex: 0 0 auto;
    overflow: hidden;
    cursor: pointer;
}

.project-page-page .project-gallery-item img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.project-page-page .project-gallery-item {
    opacity: .5;
    transition: opacity .3s ease;
}

.project-page-page .project-gallery-item.active {
    opacity: 1;
}

.project-page-page .project-page-scroll-prompt {
    position: absolute;
    left: calc(50% + calc(435 * var(--vw-base)) + calc(45 * var(--vw-base)));
    bottom: calc(50% - calc(244.6875 * var(--vw-base)));
    z-index: 7;
    display: flex;
    align-items: flex-end;
    gap: calc(8 * var(--vw-base));
    color: #8c8c8c;
    font-family: "Raleway", sans-serif;
    font-size: calc(12 * var(--vw-base));
    font-weight: 300;
    letter-spacing: 0.3em;
    line-height: 1;
    white-space: nowrap;
    will-change: opacity;
}

.project-page-page .project-scroll-dot {
    position: relative;
    top: calc(0 * var(--vw-base));
    width: calc(14 * var(--vw-base));
    height: calc(14 * var(--vw-base));
    flex: 0 0 auto;
    border: 1px solid currentColor;
    border-radius: 50%;
}

/* 右下 case 名稱 */
.project-page-page .project-case-name {
    position: absolute;
    right: calc(10 * var(--vw-base));
    bottom: calc(10 * var(--vw-base));
    z-index: 7;
    color: #ffffff;
    font-family: "Noto Sans TC", "Noto Sans JP", sans-serif;
    font-size: calc(70 * var(--vw-base));
    font-weight: 400;
    letter-spacing: 0.05em;
    line-height: 1.1em;
    text-align: end;
    white-space: pre-line;
    overflow-wrap: anywhere;
    will-change: opacity;
}

/* 主圖中下方 X / EXPLORE */
.project-page-page .project-page-explore {
    position: absolute;
    left: 50%;
    bottom: 10px;
    z-index: 7;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: calc(15 * var(--vw-base));
    color: #ffffff;
    font-family: "Raleway", sans-serif;
    font-weight: 600;
    letter-spacing: 0.05em;
    line-height: 1;
    text-decoration: none;
    transform: translateX(-50%);
    will-change: opacity;
}

.project-page-page .project-explore-mark {
    font-size: calc(22 * var(--vw-base));
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 400;
}

.project-page-page .project-explore-label {
    font-weight: 400;
    padding: 0 0.5rem calc(2 * var(--vw-base)) 0.5rem;
    border-bottom: 1px solid currentColor;
    font-size: calc(20 * var(--vw-base));
}

.project-page-page .project-page-explore:hover {
    opacity: .65;
}

@media (max-width: 900px) {
    .project-page-page .project-page-gallery {
        right: calc(20 * var(--vw-base));
    }

    .project-page-page .project-page-meta {
        left: calc(40 * var(--vw-base));
    }
}