:root{--paper:#faf9f5;--ink:#292b28;--muted:#7c7f75;--red:#975346}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:'Songti SC','STSong','Noto Serif CJK SC',serif;overflow:hidden}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;color:inherit}button{border:0;background:none}button:focus-visible,a:focus-visible{outline:2px solid var(--red);outline-offset:5px}header{position:fixed;z-index:5;top:0;left:0;width:100%;display:flex;justify-content:space-between;align-items:center;padding:25px 42px;pointer-events:none;background:linear-gradient(var(--paper),transparent)}header>*{pointer-events:auto}.brand{color:inherit;text-decoration:none;letter-spacing:.22em;font-size:21px}.brand span{font-size:11px;color:var(--muted);letter-spacing:.25em;margin-left:19px}.header-actions{display:flex;gap:25px;font-size:12px;letter-spacing:.13em}.header-actions span{color:var(--muted);font-size:10px;margin-left:8px}#scroll{display:flex;width:100vw;height:100dvh;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;scroll-behavior:smooth;scrollbar-width:none;overscroll-behavior:contain}#scroll::-webkit-scrollbar{display:none}.scene{flex:0 0 100%;height:100%;scroll-snap-align:start;position:relative;overflow:hidden;background:var(--paper)}.painting{position:absolute;width:max(100vw,150vh);height:calc(max(100vw,150vh) * .5625);top:50%;left:50%;transform:translate(-50%,-50%)}.background{width:100%;height:100%;object-fit:fill;position:absolute;inset:0}.painting:after{content:'';position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,var(--paper),transparent 3%,transparent 97%,var(--paper));z-index:2}.exhibit{position:absolute;transform:translateX(-50%);height:25%;width:12%;padding:0;z-index:3;display:flex;align-items:flex-end;justify-content:center;transition:filter .3s}.exhibit img{max-height:100%;max-width:100%;width:auto;height:auto;object-fit:contain;transition:transform .45s,filter .45s;filter:contrast(.87)}.exhibit:hover img{transform:translateY(-5px);filter:contrast(1)}.exhibit .exhibit-label{position:absolute;top:calc(100% + 17px);left:50%;transform:translateX(-50%);white-space:nowrap;opacity:0;transition:opacity .3s;font-size:11px;letter-spacing:.1em;background:#faf9f5e8;padding:5px 10px}.exhibit:hover .exhibit-label,.exhibit:focus-visible .exhibit-label{opacity:1}.exhibit-label:after{content:' ↗';color:var(--red)}.intro-title{position:absolute;left:8%;top:14%;height:59%;z-index:3;display:flex;gap:3vw;align-items:center}.intro-title img{height:100%;object-fit:contain;max-width:29vw}.intro-title .english{height:76%;max-width:24vw}.enter{position:absolute;left:17%;top:77%;z-index:3;font-size:13px;letter-spacing:.3em;border-bottom:1px solid #aaa;padding:12px 2px}.enter span{margin-left:30px;color:var(--red)}.scene-note{position:absolute;left:6%;top:17%;z-index:3;writing-mode:vertical-rl;letter-spacing:.35em;font-size:17px;line-height:2}.scene-note small{font-size:10px;color:var(--muted);margin-right:15px;letter-spacing:.2em}footer{position:fixed;bottom:0;z-index:5;width:100%;padding:22px 42px;display:flex;justify-content:space-between;align-items:center;background:linear-gradient(transparent,var(--paper) 40%);font-size:11px;letter-spacing:.12em}#chapters{display:flex;gap:18px}#chapters button{width:8px;height:8px;border:1px solid #a2a49c;border-radius:50%;padding:0;transition:.3s}#chapters button[aria-current=true]{background:var(--red);border-color:var(--red);box-shadow:0 0 0 4px #97534613}.arrows{display:flex;align-items:center;gap:20px}.arrows button{font-size:22px}.arrows button:disabled{opacity:.25}.arrows span{font:10px sans-serif;color:var(--muted)}dialog{border:1px solid #deded5;padding:0;background:var(--paper);color:var(--ink)}dialog::backdrop{background:#2c302b70;backdrop-filter:blur(6px)}.close{position:absolute;right:24px;top:18px;font-size:28px}small{font:10px sans-serif;letter-spacing:.22em;color:var(--muted)}h2{font-weight:400;letter-spacing:.16em}#guide{width:min(490px,92vw);padding:50px;line-height:2.1;font-size:14px}#guide h2{font-size:29px;margin:12px 0 26px}.muted{color:var(--muted);font-size:12px}.primary{background:var(--ink);color:var(--paper);padding:13px 25px;margin-top:15px;letter-spacing:.1em}#catalog{width:min(960px,94vw);max-height:88dvh;padding:30px}.dialog-head{position:relative;border-bottom:1px solid #ddd;padding-bottom:12px}#catalogGrid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:25px}.catalog-card{text-align:center;padding:20px 10px;border:1px solid transparent}.catalog-card:hover{border-color:#d4d5cd}.catalog-card img{height:120px;width:100%;object-fit:contain;display:block;margin-bottom:14px}.catalog-card span{font-size:12px}.catalog-card small{display:block;font-size:9px;margin-top:8px;letter-spacing:0}#detail{width:min(1250px,96vw);height:min(840px,94dvh);overflow:hidden;border:0;display:none;flex-direction:column}#detail[open]{display:flex}.detail-top,.detail-bottom{padding:25px 32px;display:flex;align-items:center;justify-content:space-between;z-index:2}.detail-top h2{margin:9px 0 0;font-size:22px}.detail-top>button{font-size:32px}.detail-bottom{border-top:1px solid #deded5;font-size:11px}.detail-bottom p{color:var(--muted);margin:8px 0 0}.viewer-controls{display:flex;gap:15px;align-items:center}.viewer-controls button{border:1px solid #d6d8ce;padding:8px 12px;font-size:12px}.viewer-controls button[aria-pressed=true]{border-color:var(--red);color:var(--red)}#viewer{flex:1;min-height:0;position:relative;touch-action:none;background:radial-gradient(ellipse at center,#f0eee5,var(--paper) 65%)}#viewer canvas{width:100%;height:100%;display:block}#status{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;letter-spacing:.15em;font-size:13px;z-index:2;pointer-events:none}#status[hidden],#flatArt[hidden]{display:none}#flatArt{height:90%;width:90%;object-fit:contain;position:absolute;left:5%;top:5%;transform-origin:center}#detailError{position:absolute;top:45%;width:100%;text-align:center;font-size:13px}#detailError button{border-bottom:1px solid var(--red);padding:8px}#detail:fullscreen{width:100vw;height:100dvh;max-width:none;max-height:none} @media(max-width:700px){header{padding:20px}.brand{font-size:17px}.brand span{display:none}.header-actions{gap:12px;font-size:11px}.header-actions span{display:none}footer{padding:18px 20px}#chapter{max-width:100px;font-size:10px}#chapters{gap:10px}.arrows{gap:12px}.painting{width:150vh;height:84.375vh}.intro-title{left:30%;top:12%;height:50%;gap:2vw}.intro-title img{max-width:25vw}.intro-title .english{max-width:26vw}.enter{left:37%;top:70%}.scene-note{left:35%;top:12%;font-size:14px}.exhibit{height:23%;width:11%}.exhibit-label{display:none}.detail-top,.detail-bottom{padding:20px}.detail-top h2{font-size:17px}.detail-bottom{align-items:flex-start;gap:10px;flex-direction:column}.viewer-controls{flex-wrap:wrap;gap:8px}.viewer-controls button{padding:8px 10px}#catalogGrid{grid-template-columns:repeat(2,1fr)}#guide{padding:35px}.catalog-card img{height:100px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media(max-width:700px){.painting{width:100vw;height:56.25vw;top:58%}.intro-title{left:8%;top:-100%;height:130%;gap:6vw}.intro-title img{max-width:29vw}.intro-title .english{max-width:35vw}.enter{left:9%;top:106%;font-size:12px}.scene-note{left:7%;top:23%;writing-mode:horizontal-tb}.scene-note small{margin-left:18px}.exhibit{min-width:44px}.header-actions{gap:8px}#chapters{gap:8px}.arrows{gap:8px}#chapter{max-width:88px}.detail-bottom{font-size:10px}}
@media(min-width:701px){.painting{width:100vw;height:56.25vw;max-height:none}.intro-title{gap:3vw}.intro-title img{max-width:20vw}.intro-title .english{max-width:22vw}}
.exhibit img,.exhibit:hover img{filter:none}
#viewer{overflow:hidden}#viewer canvas[hidden]{display:none}

/* Continuous handscroll: overlapping paper edges, free scroll without page snapping. */
:root{--paper:#fefefc}
#scroll{scroll-snap-type:none;scroll-behavior:auto;cursor:grab;touch-action:pan-x pan-y}
#scroll.dragging{cursor:grabbing;user-select:none}
.scene{scroll-snap-align:none;background:transparent}
.scene+.scene{margin-left:-3vw}
.painting:after{display:none}
.background{mask-image:linear-gradient(90deg,transparent,#000 3%,#000 97%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 3%,#000 97%,transparent)}
.scene:first-child .background{mask-image:linear-gradient(90deg,#000 97%,transparent);-webkit-mask-image:linear-gradient(90deg,#000 97%,transparent)}
.scene:last-child .background{mask-image:linear-gradient(90deg,transparent,#000 3%);-webkit-mask-image:linear-gradient(90deg,transparent,#000 3%)}
.scene-note{writing-mode:horizontal-tb;left:7%;top:auto;bottom:clamp(94px,12dvh,140px);font-size:15px;line-height:1.8;letter-spacing:.22em}
.scene-note small{writing-mode:horizontal-tb;display:inline-block;margin:0 0 0 20px;font-size:9px;letter-spacing:.15em}
.enter{left:17%;top:auto;bottom:clamp(94px,12dvh,140px);padding:10px 2px;font-size:13px}
@media(max-width:700px){.scene-note{left:7%;top:auto;bottom:110px;font-size:14px}.scene-note small{margin-left:12px}.enter{left:9%;top:auto;bottom:110px}.scene+.scene{margin-left:-3vw}}

.painting-exhibit{align-items:center!important;width:24%!important}
.painting-exhibit img{background:#f2ede2;padding:6px;border:1px solid #b8b3a7;box-shadow:0 2px 4px #45453b0c;max-width:100%;max-height:100%}
.painting-exhibit .exhibit-label{top:calc(100% + 7px)}
.detail-body{flex:1;display:flex;min-height:0}#textPanel{width:36%;min-width:260px;overflow-y:auto;border-left:1px solid #dddcd2;padding:22px 26px;font:13px/1.9 'Songti SC',serif;white-space:pre-wrap}#textPanel[hidden]{display:none}#textPanel h3{font-size:17px;font-weight:400;line-height:1.6}.record-source{font-size:11px;color:#666}.record-note{font-size:11px;color:#8a8174;border-bottom:1px solid #ddd;padding-bottom:14px}
#archive{width:min(1100px,96vw);height:90dvh;padding:30px;overflow-y:auto}.archive-intro{font-size:12px;line-height:1.9;color:var(--muted);max-width:750px}.archive-tools{display:flex;gap:10px;margin:20px 0;position:sticky;top:-30px;z-index:2;background:var(--paper);padding:12px 0}.archive-tools input,.archive-tools select{font:12px sans-serif;border:1px solid #d7d7cd;background:var(--paper);color:var(--ink);padding:12px;min-width:0}.archive-tools input{flex:1}#archiveCount{font-size:11px;color:var(--muted)}#archiveGrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.archive-card{text-align:left;padding:15px;border:1px solid #e4e3dc}.archive-card:hover{border-color:#999}.archive-card img{height:130px;width:100%;object-fit:contain;background:#f5f3ec}.archive-card h3{font-size:14px;font-weight:400;line-height:1.6}.archive-card p{font-size:10px;line-height:1.6;color:var(--muted)}
@media(max-width:700px){#textPanel{width:46%;min-width:150px;padding:12px;font-size:12px}.viewer-controls{gap:5px}.viewer-controls button{padding:7px;font-size:11px}#archive{padding:20px}.archive-tools{flex-wrap:wrap;top:-20px}.archive-tools input{flex-basis:100%}#archiveGrid{grid-template-columns:repeat(2,1fr);gap:10px}.archive-card{padding:9px}.header-actions{font-size:10px}.header-actions span{display:none}.painting-exhibit img{padding:3px}}

.painting-exhibit{width:16%!important}.painting-exhibit img{background:#fff;padding:0;border:0;box-shadow:none}.detail-body #viewer{min-width:0}

.archive-card img{height:185px;object-fit:contain}@media(max-width:700px){.archive-card img{height:155px}}