:root{color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#191919;background:#eee;--header:52px}
.pdf-page img{display:block;width:100%;height:100%;object-fit:contain;position:absolute;inset:0}.pdf-page img:not([src]){visibility:hidden}.pdf-page .page-placeholder{pointer-events:none}.page-failed .page-placeholder{pointer-events:auto;background:#fff}.pdf-page img+ .page-placeholder{z-index:0}.pdf-page img{z-index:1}.page-failed img{visibility:hidden}.page-failed .page-placeholder{z-index:2}
*{box-sizing:border-box}body{margin:0;overflow:hidden}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.3;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid #315887;outline-offset:2px}button{border:0;background:none;color:inherit}a{color:inherit}svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.header{height:calc(var(--header) + env(safe-area-inset-top));padding:env(safe-area-inset-top) 12px 0 16px;display:flex;align-items:center;gap:12px;background:#fff;border-bottom:1px solid #e7e7e7;position:relative;z-index:2}.brand{font-size:23px;letter-spacing:-1.1px;text-decoration:none;white-space:nowrap;font-weight:400}.edition{font-size:9px;letter-spacing:1px;color:#737373;margin-left:auto;white-space:nowrap}.icon-button{width:44px;height:44px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;border-radius:6px}.icon-button:active{background:#eee}
#viewport{height:calc(100vh - var(--header) - env(safe-area-inset-top));height:calc(100dvh - var(--header) - env(safe-area-inset-top));overflow:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;scrollbar-width:thin;touch-action:pan-x pan-y pinch-zoom;outline:none;position:relative;overflow-anchor:none}
#pages{width:100%;min-width:100%;padding:0 0 8px;overflow-anchor:none}.pdf-page{position:relative;background:#fff;margin:0 0 8px;width:100%;aspect-ratio:var(--ratio);overflow:hidden;contain:layout paint style}.pdf-page[hidden]{display:none}.pdf-page canvas{display:block;width:100%;height:100%;position:absolute;inset:0}.page-placeholder{position:absolute;inset:0;display:flex;justify-content:center;align-items:center;color:#8b8b8b;font-size:13px;gap:10px}.pdf-page.rendered .page-placeholder{display:none}.page-failed .page-placeholder{flex-direction:column;color:#555}.page-retry{padding:10px 20px;border:1px solid #ccc;border-radius:4px;background:#fafafa}
.loading{position:fixed;inset:calc(var(--header) + env(safe-area-inset-top)) 0 0;z-index:3;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:14px;background:#fafafa;padding:24px;text-align:center}.loading strong{font-weight:500;font-size:16px}.loading>span:last-child{color:#777;font-size:12px}.spinner{display:inline-block;width:24px;height:24px;border:2px solid #ddd;border-top-color:#222;border-radius:50%;animation:spin .8s linear infinite}.loading[hidden],.error-panel[hidden]{display:none}.error-panel{position:fixed;inset:calc(var(--header) + env(safe-area-inset-top)) 0 0;z-index:4;background:#fafafa;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:28px;text-align:center}.error-panel h1{font-size:20px;font-weight:500}.error-panel p{max-width:30em;font-size:14px;line-height:1.7;color:#777}.primary-button{background:#161616;color:white;padding:12px 28px;border-radius:4px;margin:12px}.error-panel a{margin-top:16px;font-size:14px}
dialog{border:0;border-radius:14px;padding:22px;width:calc(100% - 32px);max-width:420px;box-shadow:0 16px 60px #0002}dialog::backdrop{background:#0006}.dialog-head{display:flex;align-items:center;justify-content:space-between;margin-top:-8px;margin-right:-8px}.dialog-head h2{font-size:18px;font-weight:500;margin:0}.dialog-head button{font-size:27px;font-weight:300}.document-name{font-size:13px;color:#777;margin:8px 0 24px}.setting-row{display:flex;align-items:center;justify-content:space-between;font-size:15px;padding-bottom:20px;border-bottom:1px solid #eee}.setting-row small{display:block;font-size:12px;color:#888;margin-top:6px}.setting-row input{width:21px;height:21px;accent-color:#171717}.reading-tip{font-size:13px;line-height:1.8;color:#777;margin:18px 0 22px}.original-link{font-size:14px;text-decoration:none;display:inline-flex;align-items:center;gap:10px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@keyframes spin{to{transform:rotate(360deg)}}@media(min-width:900px){.header{padding-left:24px;padding-right:24px}.edition{font-size:11px}}@media(max-width:350px){.edition{font-size:8px;letter-spacing:0}.brand{font-size:21px}.header{gap:4px}}@media(prefers-reduced-motion:reduce){.spinner{animation:none}}