:root{color-scheme:light;--size:min(72vw,calc(100svh - 142px),900px);--ink:#64756e}
*{box-sizing:border-box}html,body{margin:0;min-width:280px;background:#fff}body{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;min-height:100svh;display:flex;flex-direction:column}
.gallery{position:relative;display:grid;align-items:center;flex:1;min-height:calc(100svh - 68px);padding:24px 0 50px;overflow:hidden;isolation:isolate}
.pictures{display:grid;place-items:center;width:100%;min-width:0}
.main-art{margin:0;width:var(--size);min-width:0}.css-art{position:relative;width:100%;overflow:hidden;container-type:inline-size;isolation:isolate;background:#fff}.drawing{position:absolute;left:0;top:0;width:var(--art-width);height:var(--art-height);transform-origin:0 0;transform:scale(tan(atan2(100cqw,var(--art-width))))}.paint{position:absolute;display:block;inset:0;width:100%;height:100%;pointer-events:none}
.main-art{overflow:clip;aspect-ratio:1;contain:layout paint;isolation:isolate}
.band{position:absolute;display:block;left:0;width:100%;height:2px;pointer-events:none}
/* Keep both artworks rasterized in the same viewport. The selected layer is
   visually opaque; the tiny alpha difference prevents occlusion from discarding
   the prepared layer underneath (less than 0.003 of an 8-bit color level). */
.art-track{display:grid;width:100%;height:100%}
.art-track>div{grid-area:1/1;width:100%;min-width:0;contain:layout paint;pointer-events:none;opacity:1;z-index:1;will-change:opacity}
#art-1:checked~.pictures .state-1,#art-2:checked~.pictures .state-2{z-index:2;opacity:.99999;animation:picture-in .6s ease both}
@keyframes picture-in{from{opacity:0}to{opacity:.99999}}
.pictures{animation:gallery-arrive .9s both}
@keyframes gallery-arrive{0%,70%{opacity:.00001}100%{opacity:1}}
.arrows .state-2{display:none}#art-2:checked~.arrows .state-1{display:none}#art-2:checked~.arrows .state-2{display:block}
.select-art{position:absolute;appearance:none;-webkit-appearance:none;border:1px solid #9ca9a3;background:#fff;width:9px;height:9px;border-radius:50%;margin:0;padding:0;bottom:20px;left:calc(50% - 16px);cursor:pointer;z-index:3}.select-art+ .select-art{left:calc(50% + 7px)}.select-art:checked{background:#536d5e;border-color:#536d5e}.select-art:before{content:"";position:absolute;inset:-13px;border-radius:50%}.select-art:focus-visible{outline:2px solid #536d5e;outline-offset:6px}
.arrows{position:absolute;inset:0;pointer-events:none}.arrow{position:absolute;top:calc(50% - 30px);width:44px;height:44px;display:grid;place-items:center;pointer-events:auto;cursor:pointer;border-radius:50%;background:rgba(255,255,255,.88);border:1px solid #e3e8e4}.arrow:hover{background:#f0f4f1}.arrow:after{content:"";width:8px;height:8px;border-right:1.5px solid #52675b;border-top:1.5px solid #52675b;transform:rotate(45deg);margin-right:3px}.previous{left:max(14px,calc((100vw - var(--size))/2 - 60px))}.previous:after{transform:rotate(-135deg);margin-right:0;margin-left:3px}.next{right:max(14px,calc((100vw - var(--size))/2 - 60px))}
.beian{min-height:68px;padding:15px 20px 22px;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:7px 22px;font-size:12px;line-height:1.8;color:#707873}.beian a{color:inherit;text-decoration:none;display:inline-flex;align-items:center;gap:5px}.beian a:hover{color:#344d3e}.beian a:focus-visible{outline:2px solid #536d5e;outline-offset:4px}.beian .css-art{width:18px;height:20px;flex:none;background:transparent}
@media(max-width:700px){:root{--size:min(94vw,calc(100svh - 160px))}.gallery{min-height:calc(100svh - 86px);padding-top:12px}.arrow{width:36px;height:36px;top:auto;bottom:8px}.previous{left:calc(50% - 94px)}.next{right:calc(50% - 94px)}.beian{padding:14px 12px 22px;gap:4px 18px;min-height:86px}.select-art{bottom:21px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
@media(forced-colors:active){.select-art:checked{background:Highlight}.arrow{border-color:CanvasText}.arrow:after{border-color:CanvasText}}