:root{--purple:#6963e8;--purple-deep:#5148b7;--ink:#292644;--muted:#858199;--line:#e5e3ef;--surface:#f8f8fc;--stage-scale:1;--sidebar:244px;font-family:"Microsoft YaHei UI","Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:var(--surface);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;height:100dvh;overflow:hidden}button,input,a{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button{cursor:pointer}button,a{touch-action:manipulation}button{border:0;background:transparent;color:inherit}button:disabled{opacity:.3;cursor:default}a{color:inherit;text-decoration:none}:focus-visible{outline:3px solid #a199fa;outline-offset:3px}[hidden]{display:none!important}
.topbar{height:80px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 30px;gap:16px;position:relative;z-index:5}.identity{display:flex;align-items:center;gap:13px}.unit-mark{display:grid;place-items:center;background:var(--purple);border-radius:12px;color:#fff;width:44px;height:44px;font:bold 30px Arial,sans-serif}.identity h1{font-size:18px;font-weight:700;letter-spacing:.04em;margin:0 0 4px}.identity p{margin:0;font-size:11px;letter-spacing:.09em;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:25px}.view-switch{display:flex;gap:3px;background:#f0eff8;padding:4px;border-radius:9px}.view-switch button{font-size:12px;border-radius:6px;padding:7px 19px}.view-switch .selected{background:white;color:var(--purple-deep);box-shadow:0 1px 4px #35296012}.download{font-size:12px;color:#6e6885}.download span{margin-left:8px}
.workspace{height:calc(100dvh - 80px);display:flex}.sidebar{width:var(--sidebar);flex-shrink:0;border-right:1px solid var(--line);padding:24px 18px 16px;background:#fff;display:flex;flex-direction:column;position:relative;z-index:4}.sidebar-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.sidebar-heading h2{font-size:13px;font-weight:600;margin:0;letter-spacing:.05em}.sidebar-heading h2 span{font:11px Arial,sans-serif;color:var(--muted);margin-left:9px}.icon-button{width:34px;height:34px;display:inline-grid;place-items:center;border-radius:8px;font-size:20px;flex-shrink:0}.icon-button:hover:not(:disabled){background:#eeeaf9;color:var(--purple-deep)}.search{border:1px solid var(--line);border-radius:8px;display:flex;align-items:center;gap:7px;padding:7px 10px;margin-bottom:18px;color:var(--muted)}.search span{font-size:22px}.search input{border:0;outline:none;background:transparent;width:100%;min-width:0;font-size:12px;color:var(--ink)}.search:focus-within{border-color:var(--purple)}.search input::placeholder{color:#a29cae}#outline{overflow:auto;display:flex;flex-direction:column;gap:7px;margin:0 -5px;padding:2px 5px 12px}.outline-item{display:flex;text-align:left;width:100%;gap:10px;padding:11px 9px;border:1px solid transparent;border-radius:9px}.outline-item:hover{background:#f6f5fb}.outline-item.active{background:#efedfd;border-color:#ddd8fa}.outline-number{color:#aaa4be;font:11px Arial,sans-serif;padding-top:4px}.outline-item.active .outline-number{color:var(--purple)}.outline-text{min-width:0;flex:1}.outline-text img{width:100%;aspect-ratio:16/9;object-fit:contain;border:1px solid #e4e0ee;display:block;border-radius:4px;margin-bottom:8px;background:#f1f3fc}.outline-text strong{font-size:11px;line-height:1.55;display:block;font-weight:500}.outline-item.active strong{color:var(--purple-deep);font-weight:600}.sidebar-foot{font-size:10px;color:#aca5ba;margin:auto 0 0;padding-top:15px;line-height:1.5}#no-results{font-size:12px;line-height:1.8;color:var(--muted)}
main{flex:1;min-width:0;display:flex;flex-direction:column;position:relative;background:#f4f3fa}.page-heading{height:64px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:0 25px;gap:16px}.page-heading p{display:flex;align-items:center;gap:14px;font-size:12px;margin:0;min-width:0}.page-tag{font-size:10px;color:#a49db4;border-left:1px solid #d6d0e2;padding-left:14px;white-space:nowrap}.outline-button{font-size:12px;display:inline-flex;align-items:center;justify-content:center;gap:7px;white-space:nowrap;padding:8px 10px;border-radius:7px}.outline-button:hover{background:#eae6f6;color:var(--purple-deep)}.outline-button span[aria-hidden]{font-size:19px}.stage{flex:1;min-height:0;margin:0 25px;position:relative;overflow:hidden;touch-action:pan-y;outline:none!important}#impress{transform:scale(var(--stage-scale))!important;top:50%!important;left:50%!important;pointer-events:none}.step{width:1280px;height:720px;background:#fff;box-shadow:0 10px 42px #4a41782a;visibility:hidden;opacity:0;transition:opacity .18s;overflow:hidden}.step.active{visibility:visible;opacity:1}.slide-image{display:block;width:100%;height:100%;object-fit:contain}.slide-image.failed{display:none}.slide-error{display:none;padding:100px;color:var(--ink);font-size:26px}.step.load-failed .slide-error{display:block}.step.load-failed .slide-image{display:none}.controls{height:78px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:0 25px;gap:14px}.control-start{display:flex;align-items:center;gap:20px}.keyboard-tip{font-size:10px;color:#a49db4}.pager{display:flex;gap:18px;align-items:center}.pager>.icon-button{background:#fff;box-shadow:0 2px 7px #4a417808;font-size:18px}.pager>.icon-button:hover:not(:disabled){background:#e9e5fb}.page-input{display:flex;gap:8px;align-items:center;font:12px Arial,sans-serif;color:#9a92ac}.page-input input{width:29px;border:0;border-radius:3px;background:transparent;color:var(--purple-deep);padding:4px 0;text-align:center;font:600 13px Arial,sans-serif;appearance:textfield}.page-input input::-webkit-inner-spin-button{appearance:none}.progress{height:3px;background:#e6e2f3;flex-shrink:0}#progress-fill{display:block;background:var(--purple);height:100%;width:14.2857%;transition:width .25s}
body.sidebar-closed .sidebar{display:none}body.reading-mode .stage{display:none}body.reading-mode .reading{display:block}body.reading-mode .keyboard-tip{display:none}.reading{overflow:auto;flex:1;min-height:0;padding:10px 28px 40px}.reading-page{max-width:1160px;margin:0 auto 40px;scroll-margin-top:12px}.reading-page .reading-image{width:100%;height:auto;display:block;box-shadow:0 7px 25px #4a417816}.reading-caption{display:flex;align-items:center;justify-content:space-between;margin:15px 0 0;font-size:12px;gap:14px}.reading-caption h2{font-size:13px;margin:0;font-weight:500}.reading-caption h2 span{font:11px Arial,sans-serif;color:var(--purple);margin-right:12px}.reading-caption button{font-size:11px;color:var(--purple-deep)}.reading-page details{margin-top:12px;background:white;padding:14px 18px;border:1px solid var(--line);border-radius:8px}.reading-page summary{cursor:pointer;font-size:12px;color:var(--muted)}.reading-page details p{font-size:13px;line-height:1.9;overflow-wrap:anywhere}.reading-page details p:first-of-type{margin-top:20px}
dialog{color:var(--ink);border:1px solid var(--line);padding:0;box-shadow:0 20px 100px #3328593a;border-radius:16px}dialog::backdrop{background:#30264670;backdrop-filter:blur(4px)}.text-dialog{width:min(720px,92vw);max-height:82dvh}.dialog-header{padding:22px 25px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:18px;background:#fff}.dialog-header h2{font-size:17px;margin:0;font-weight:600}.eyebrow{font-size:11px;color:var(--purple);margin:0 0 8px}.text-content{padding:15px 25px;max-height:calc(82dvh - 170px);overflow:auto}.text-content p{font-size:14px;line-height:1.9;overflow-wrap:anywhere}.text-note{font-size:11px;color:var(--muted);border-top:1px solid var(--line);padding:15px 25px;margin:0;line-height:1.8}.zoom-dialog{width:96vw;max-width:none;height:94dvh;max-height:94dvh}.zoom-dialog[open]{display:flex;flex-direction:column}.zoom-dialog .dialog-header{padding:12px 20px;flex-shrink:0}.zoom-dialog h2{font-size:13px}.zoom-actions{display:flex;align-items:center;gap:8px}.zoom-actions output{font:12px Arial,sans-serif;width:50px;text-align:center;color:var(--muted)}.zoom-scroll{overflow:auto;flex:1;min-height:0;background:#efedf6;padding:22px}.zoom-scroll img{display:block;max-width:none;background:#fff;box-shadow:0 3px 15px #33285918;margin:0 auto}.zoom-note{font-size:11px;color:var(--muted);text-align:center;margin:0;padding:8px;flex-shrink:0}.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}.noscript{position:fixed;inset:80px 0 0;background:#f4f3fa;display:grid;place-content:center;gap:20px;text-align:center;z-index:10}.noscript a{color:var(--purple)}
body.focus-mode .topbar,body.focus-mode .sidebar,body.focus-mode .page-heading{display:none}body.focus-mode .workspace{height:100dvh}body.focus-mode .controls{height:56px}body.focus-mode .stage{margin:10px 16px 0}
@media(min-height:950px){.outline-text img{max-height:90px}}@media(max-height:780px) and (min-width:761px){.outline-text img{display:none}.outline-item{padding:15px 9px}.topbar{height:66px}.workspace{height:calc(100dvh - 66px)}.page-heading{height:54px}.controls{height:66px}}
@media(max-width:1000px){:root{--sidebar:216px}.topbar{padding:0 22px}.keyboard-tip{display:none}.page-tag{display:none}.page-heading,.controls{padding-left:18px;padding-right:18px}.stage{margin-left:18px;margin-right:18px}.pager{gap:12px}}
@media(max-width:760px){.topbar{height:68px;padding:0 16px;gap:10px}.workspace{height:calc(100dvh - 68px)}.unit-mark{width:36px;height:36px;font-size:25px;border-radius:9px}.identity{gap:9px}.identity h1{font-size:15px}.identity p{font-size:9px}.top-actions{gap:8px}.download{display:none}.view-switch button{font-size:11px;padding:6px 12px}.sidebar{position:absolute;top:68px;bottom:0;left:0;width:min(300px,85vw);box-shadow:15px 0 40px #44385c25;z-index:9}.outline-text img{max-height:95px}.page-heading{height:56px;padding:0 9px;gap:5px}.page-heading p{font-size:10px;text-align:center;line-height:1.5}.outline-button{font-size:11px;padding:7px 6px;gap:4px}.stage{margin:0 10px}.controls{height:66px;padding:0 10px;gap:5px}.pager{gap:8px}.icon-button{width:32px;height:32px}.fullscreen-label{display:none}.reading{padding:5px 12px 20px}.reading-page{margin-bottom:26px}.reading-caption h2{font-size:11px}.reading-caption h2 span{margin-right:5px}.dialog-header{padding:15px}.text-content{padding:10px 18px}.zoom-dialog .dialog-header{padding:10px;flex-wrap:wrap;gap:7px}.zoom-dialog h2{width:100%;font-size:12px}.zoom-actions{width:100%;justify-content:flex-end}.zoom-scroll{padding:10px}.zoom-note{font-size:10px}.text-note{padding:12px 18px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{body{height:auto!important;overflow:visible!important;background:#fff}.topbar,.sidebar,.page-heading,.stage,.controls,.progress,dialog{display:none!important}.workspace,main,.reading{display:block!important;height:auto!important;overflow:visible!important;padding:0!important}.reading-page{margin:0;break-after:page;box-shadow:none}.reading-page img{width:100%;box-shadow:none!important}.reading-caption,.reading-page details{display:none}@page{size:landscape;margin:0}}