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1.5rem;--fs-2xl: 1.9rem;--fs-3xl: 2.4rem;--fs-display: 3rem;--r-xs: 3px;--r-sm: 5px;--r-md: 6px;--r-lg: 10px;--r-pill: 999px;--shadow-1: 0 2px 10px -4px rgba(31, 41, 51, .16), 0 1px 2px rgba(31, 41, 51, .07);--shadow-2: 0 14px 30px -18px rgba(31, 41, 51, .42);--shadow-3: 0 30px 80px -30px rgba(10, 20, 26, .62);--ring: 2px dashed var(--gold);--ring-offset: 3px;--sun: #c9856a;--noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");--lotus-mark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 24'%3E%3Cdefs%3E%3ClinearGradient id='l' x1='0' y1='0' x2='1' y2='0'%3E%3Cstop offset='0' stop-color='%23000' stop-opacity='0'/%3E%3Cstop offset='1' 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var(--celadon);letter-spacing:var(--ls-2)}.md-body h3{font-size:var(--fs-lg);margin-top:1.6em;color:var(--dai)}.md-body h3:before{content:"§ ";color:var(--celadon);font-family:var(--font-latin)}.md-body p{margin:0;text-align:justify}.md-body>*+p{margin-top:1.25em}.md-body strong{color:var(--dai)}.md-body a{color:var(--celadon-strong);background-size:100% 1px;overflow-wrap:anywhere}.md-body a:hover{color:var(--gold)}.md-body code,.md-body :not(pre)>code{overflow-wrap:anywhere}.md-body blockquote{margin:1.6em 0;padding:var(--space-1) var(--space-2);background:var(--celadon-mist);border-left:3px solid var(--celadon);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--dai)}.md-body blockquote p{text-align:left}.md-body blockquote:before{content:"引";float:left;font-family:var(--font-display);font-size:1.6rem;color:var(--celadon);margin-right:.8rem;line-height:1}.md-body code{font-family:Cascadia Code,Consolas,monospace;font-size:.9em;background:var(--paper-deep);border:1px solid var(--celadon-mist);border-radius:var(--r-xs);padding:.1em .4em;color:var(--dai)}.md-body pre{position:relative;background:var(--ink-strong)!important;border-radius:var(--r-md);padding:var(--space-1) 1.4rem;overflow-x:auto;border:1px solid color-mix(in srgb,var(--gold) 30%,transparent)}.md-body pre code{background:none;border:none;padding:0;color:var(--on-ink)}.md-body img{display:block;max-width:100%;height:auto;margin:1.6em auto;border-radius:var(--r-sm);box-shadow:var(--shadow-1);border:6px solid #fff}.md-body img[src$=".svg"]{display:inline-block;height:1.4em;width:auto;vertical-align:-.2em;margin:0 .12em;border:none;box-shadow:none;border-radius:0;background:none;padding:0}.md-body p.is-figure{text-align:center;margin-bottom:1.6em}.md-body.vertical-mode p.is-figure{margin-bottom:0}.md-body img.block-media{cursor:zoom-in}.md-body img.block-media[src$=".svg"]{display:block;height:auto;width:auto;max-width:100%;max-height:20vh;margin:1.6em auto 0;vertical-align:baseline}.md-body img.block-media:not([src$=".svg"]){margin:1.6em auto 0}.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1.6em 0;border:1px solid var(--celadon-mist);border-radius:var(--r-sm);scrollbar-width:thin}.md-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:var(--fs-ctl)}.md-body .table-wrap table{margin:0;border:none;min-width:var(--table-min, 0)}.md-body th{background:var(--celadon-mist);color:var(--dai);font-weight:600;letter-spacing:var(--ls-2)}.md-body th,.md-body td{border:1px solid var(--celadon-light);padding:var(--space-0) .9rem;text-align:left;vertical-align:baseline}.md-body tr:nth-child(2n) td{background:color-mix(in srgb,var(--paper-deep) 60%,transparent)}.md-body td:empty{background:transparent}.md-body hr{border:none;height:1px;background:linear-gradient(to right,transparent,var(--gold),transparent);margin:2.6em auto;width:61.8%}.md-body ul,.md-body ol{padding-left:1.5em}.md-body li+li{margin-top:.3em}.md-body li>ul,.md-body li>ol{margin-top:.3em}.md-body li::marker{color:var(--celadon)}.md-body li p{margin:0}.md-body:after{content:"";display:block;width:min(46%,13rem);height:20px;margin:2.9em auto 0;background:var(--gold);opacity:.72;-webkit-mask:var(--lotus-mark) center / contain no-repeat;mask:var(--lotus-mark) center / contain no-repeat}.md-body h2,.md-body h3{scroll-margin-top:5.5rem}.h-anchor{margin-left:.5rem;font-family:var(--font-latin);font-size:.8em;color:var(--gold);background-image:none;opacity:0;transition:opacity .25s ease}.md-body h2:hover .h-anchor,.md-body h3:hover .h-anchor{opacity:1}.md-body h2:focus-within .h-anchor,.md-body h3:focus-within .h-anchor,.h-anchor:focus-visible{opacity:1}.copy-btn{position:absolute;top:.55rem;right:.6rem;background:color-mix(in srgb,var(--on-ink) 12%,transparent);border:1px solid color-mix(in srgb,var(--on-ink) 30%,transparent);border-radius:var(--r-xs);color:var(--on-ink);font-size:var(--fs-micro);letter-spacing:var(--ls-3);padding:.12rem .6rem;opacity:0;transition:opacity .3s ease,border-color .3s ease,color .3s ease}.md-body pre:hover .copy-btn{opacity:1}.md-body pre:focus-within .copy-btn,.copy-btn:focus-visible{opacity:1}.copy-btn:hover,.copy-btn.done{border-color:var(--gold);color:var(--gold-bright)}.md-body.vertical-mode{writing-mode:vertical-rl;text-orientation:mixed;height:62vh;max-width:100%;overflow-x:auto;overflow-y:hidden;padding:1.5rem .5rem;border-block:1px solid var(--hairline-gold);letter-spacing:var(--ls-2)}.md-body.vertical-mode>*+*{margin-top:0;margin-inline-start:1.4em}.md-body.vertical-mode:after{display:none}.md-body.vertical-mode h2{border-left:none;border-top:3px solid var(--celadon);padding-left:0;padding-top:.9rem;margin-top:0}.md-body.vertical-mode pre,.md-body.vertical-mode table,.md-body.vertical-mode img,.md-body.vertical-mode hr{writing-mode:horizontal-tb;max-height:52vh}.md-body.vertical-mode :not(pre)>code{writing-mode:horizontal-tb}.md-body.vertical-mode 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height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.028'/%3E%3C/svg%3E");min-height:100vh;transition:background-color .5s ease,color .5s ease}::selection{background:var(--celadon-mist);color:var(--dai)}::-webkit-scrollbar{width:10px}::-webkit-scrollbar-track{background:var(--paper)}::-webkit-scrollbar-thumb{background:var(--celadon-light);border:3px solid var(--paper);border-radius:var(--r-md)}::-webkit-scrollbar-thumb:hover{background:var(--celadon)}h1,h2,h3,h4{color:var(--dai);font-weight:700;line-height:1.5;letter-spacing:var(--ls-2)}a{color:var(--ink-strong);text-decoration:none;background-image:linear-gradient(var(--gold),var(--gold));background-repeat:no-repeat;background-size:0% 1px;background-position:0 100%;transition:background-size var(--dur) var(--ease-silk),color var(--dur) var(--ease-silk)}a:hover{color:var(--gold);background-size:100% 1px}[data-theme=dark] a{color:var(--ink)}[data-theme=dark] a:hover{color:var(--gold-bright)}[data-theme=dark] ::selection{background:var(--celadon);color:var(--ink-strong)}img{max-width:100%;height:auto}button{font-family:inherit;cursor:pointer}:focus-visible{outline:var(--ring);outline-offset:var(--ring-offset)}:focus:not(:focus-visible){outline:none}#ink-bg{position:fixed;inset:0;z-index:-1;pointer-events:none}#fx-rain{position:fixed;inset:0;z-index:70;pointer-events:none}::view-transition-old(root){animation:vt-out .26s ease both}::view-transition-new(root){animation:vt-in .4s .04s var(--ease-silk) both}@keyframes vt-out{to{opacity:0}}@keyframes vt-in{0%{opacity:0;transform:translateY(12px)}}.vertical{writing-mode:vertical-rl;text-orientation:upright;letter-spacing:var(--ls-5)}.calligraphy{font-family:var(--font-display);font-weight:700;letter-spacing:var(--ls-3)}.latin{font-family:var(--font-latin)}.container{width:min(100% - 3rem,var(--max-page));margin-inline:auto}.prose{width:min(100% - 3rem,var(--max-prose));margin-inline:auto}.page-pad{padding-block:var(--space-4) var(--space-2)}.page-head{text-align:center;margin-bottom:var(--space-3)}.page-head h1{font-size:var(--fs-display);margin:0 0 var(--space-0);letter-spacing:var(--ls-4)}.page-sub{color:var(--ink-soft);font-size:var(--fs-sm);letter-spacing:var(--ls-3);margin:0}@media(max-width:640px){.page-pad{padding-block:2.8rem 1.5rem}.page-head h1{font-size:2.2rem;letter-spacing:var(--ls-3)}}.divider{display:flex;align-items:center;gap:0;margin:var(--space-3) auto;width:min(61.8%,24rem);color:var(--gold);position:relative}.divider:before,.divider:after{content:"";flex:1;height:1px;background:linear-gradient(to var(--dir, right),transparent,color-mix(in srgb,var(--gold) 55%,transparent))}.divider:before{--dir: right}.divider:after{--dir: left}.divider-lotus{width:27px;height:20px;opacity:.78;flex-shrink:0}@keyframes ink-in{0%{opacity:0;transform:translateY(14px);filter:blur(2px)}to{opacity:1;transform:none;filter:none}}.ink-in{animation:ink-in .9s var(--ease-silk) both}.ink-in-d1{animation-delay:.15s}.ink-in-d2{animation-delay:.3s}.ink-in-d3{animation-delay:.45s}.js .rv{opacity:0;transform:translateY(22px);transition:opacity .85s var(--ease-silk) var(--rvd, 0s),transform .85s var(--ease-silk) var(--rvd, 0s)}.js .rv.on{opacity:1;transform:none}@keyframes seal-stamp{0%{transform:scale(1)}28%{transform:scale(1.35) rotate(-9deg) translateY(-8px)}52%{transform:scale(.94) rotate(1deg)}70%{transform:scale(1.05) rotate(-2.5deg)}to{transform:scale(1) rotate(-3deg)}}.seal-wrap{position:relative;display:inline-block}.seal-wrap.stamping .seal{animation:seal-stamp .8s var(--ease-stamp) both}.seal-wrap.stamping:after{content:"";position:absolute;inset:-14%;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--cinnabar) 26%,transparent),transparent 68%);animation:stamp-halo .8s ease-out both;pointer-events:none}@keyframes stamp-halo{0%{opacity:0;transform:scale(.6)}45%{opacity:1}to{opacity:0;transform:scale(1.35)}}.site-header{transition:transform .4s var(--ease-silk),box-shadow .4s ease,background-color .5s ease}.site-header.scrolled{box-shadow:var(--shadow-2)}.site-header.header-hidden{transform:translateY(-100%)}.nav-link[aria-current=page]{color:var(--gold-bright)}.nav-link[aria-current=page]:after{content:"";display:block;width:4px;height:4px;margin:2px auto 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55%,transparent);border-radius:var(--r-md);font-size:var(--fs-micro);letter-spacing:var(--ls-4);writing-mode:vertical-rl;opacity:0;transform:translateY(12px);pointer-events:none;visibility:hidden;transition:opacity .4s var(--ease-silk),transform .4s var(--ease-silk),background-color var(--dur) ease,color var(--dur) ease,border-color var(--dur) ease,visibility 0s linear .4s}#back-to-top.show{opacity:1;transform:none;pointer-events:auto;visibility:visible;transition-delay:0s}#back-to-top:hover{background:var(--gold);color:var(--ink-strong);border-color:var(--gold);transform:translateY(-4px) rotate(-3deg)}#back-to-top svg{width:14px;height:14px}#intro-overlay{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;flex-direction:column;gap:1.4rem;background:var(--paper)}#intro-overlay.play{display:flex}#intro-overlay .intro-seal{opacity:0;transform:scale(1.6) rotate(-8deg)}#intro-overlay.play .intro-seal{animation:intro-stamp 1s .5s var(--ease-stamp) both}@keyframes intro-stamp{0%{opacity:0;transform:scale(1.6) rotate(-8deg)}55%{opacity:1;transform:scale(.96) rotate(1deg)}75%{transform:scale(1.04) rotate(-2deg)}to{opacity:1;transform:scale(1) rotate(-3deg)}}#intro-overlay .intro-word{font-size:var(--fs-sm);letter-spacing:var(--ls-6);text-indent:var(--ls-6);color:var(--ink-soft);opacity:0}#intro-overlay.play .intro-word{animation:ink-in .9s 1.1s var(--ease-silk) both}#intro-overlay.leave{animation:intro-leave .65s ease both}@keyframes intro-leave{to{opacity:0;visibility:hidden}}.scroll-hint{position:absolute;left:50%;bottom:1.6rem;transform:translate(-50%);z-index:1;display:flex;flex-direction:column;align-items:center;gap:.35rem;color:var(--ink-soft);font-size:var(--fs-micro);letter-spacing:var(--ls-5);text-indent:var(--ls-5)}.scroll-hint:after{content:"";width:1px;height:2.6rem;background:linear-gradient(to bottom,var(--gold),transparent);animation:hint-drop 2.2s var(--ease-silk) infinite}@keyframes hint-drop{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}to{transform:scaleY(0);transform-origin:bottom}}.tl-year{position:relative;margin-bottom:var(--space-3)}.tl-year-head{display:flex;align-items:baseline;gap:1rem;margin-bottom:var(--space-0)}.tl-ganzhi{font-family:var(--font-display);font-size:1.5rem;font-weight:700;color:var(--dai);letter-spacing:var(--ls-4)}.tl-year-num{font-family:var(--font-latin);font-size:var(--fs-ctl);color:var(--gold-strong);letter-spacing:var(--ls-3)}.tl-year-head:after{content:"";flex:1;height:1px;background:linear-gradient(to right,var(--hairline-gold),transparent)}.tl-list{list-style:none;margin:0;padding:0 0 0 1.1rem;border-left:1px solid var(--celadon-mist)}.tl-item{position:relative;transition:opacity .3s ease,transform .3s ease}.tl-item:before{content:"";position:absolute;left:calc(-1.1rem - 5px);top:1.72rem;width:8px;height:8px;border-radius:1px;background:var(--paper);border:1.5px solid var(--gold);transform:rotate(45deg);transition:background var(--dur) ease}.tl-item:hover:before{background:var(--gold)}.filtered-out{display:none!important}.filter-row{display:flex;flex-wrap:wrap;justify-content:center;gap:.55rem;margin-bottom:var(--space-3)}.filter-chip{background:none;border:1px solid var(--celadon-mist);border-radius:var(--r-pill);padding:.18rem .9rem;font-size:var(--fs-note);letter-spacing:var(--ls-4);color:var(--ink-soft);transition:color var(--dur) var(--ease-silk),background-color var(--dur) var(--ease-silk),border-color var(--dur) var(--ease-silk)}.filter-chip:hover{border-color:var(--gold);color:var(--gold)}.filter-chip.active{background:var(--celadon-strong);border-color:var(--celadon-strong);color:var(--on-ink)}[data-theme=dark] .filter-chip.active{color:var(--ink-strong)}.post-wrap{width:min(100% - 3rem,calc(var(--max-prose) + 16rem));margin-inline:auto;display:grid;grid-template-columns:minmax(0,var(--max-prose)) 13.4rem;gap:var(--space-3);justify-content:center;padding-block:var(--space-4) var(--space-2)}.post-page{min-width:0}.post-head{text-align:center;margin-bottom:var(--space-1)}.post-cat{color:var(--celadon-strong);font-size:var(--fs-meta);letter-spacing:var(--ls-5);text-indent:var(--ls-5);margin:0 0 var(--space-1)}.post-title{font-size:var(--fs-3xl);margin:0 0 var(--space-1);letter-spacing:var(--ls-2)}.post-date{color:var(--ink-soft);font-size:var(--fs-sm);margin:0}.post-date time{letter-spacing:var(--ls-1)}html[lang=en] .post-date time{font-family:var(--font-latin)}.post-head .divider{margin:var(--space-2) auto var(--space-1)}.post-foot{margin-top:var(--space-4);padding-top:var(--space-2);border-top:var(--hairline);text-align:center}.post-foot .post-nav{text-align:left;margin:0 0 var(--space-3)}.back-link{font-size:var(--fs-ctl);letter-spacing:var(--ls-4);color:var(--celadon-strong)}@media(max-width:640px){.post-title{font-size:1.8rem}}.toc{position:sticky;top:6rem;align-self:start;max-height:calc(100vh - 8rem);overflow-y:auto;padding:var(--space-1);border-left:2px solid var(--celadon-mist);font-size:var(--fs-meta)}.toc-empty{display:none}.toc-title{font-family:var(--font-display);font-weight:700;letter-spacing:var(--ls-5);color:var(--dai);margin:0 0 var(--space-0);font-size:var(--fs-ctl)}#toc-list{display:flex;flex-direction:column;gap:.35rem}#toc-list a{background-image:none;color:var(--ink-soft);line-height:1.55;display:block;transition:color .25s ease,transform .25s ease}#toc-list a:hover{color:var(--gold)}#toc-list a.toc-l3{padding-left:1.1rem;font-size:var(--fs-note)}#toc-list a.active{color:var(--gold-strong);transform:translate(3px)}#toc-list a.active:before{content:"◇";margin-right:.4em;font-size:.85em;color:var(--gold-strong)}@media(max-width:1100px){.post-wrap{width:min(100% - 3rem,var(--max-prose));grid-template-columns:minmax(0,1fr)}.toc{display:none}}.post-tools{display:flex;justify-content:flex-end;gap:.5rem;margin-bottom:var(--space-1)}.tool-btn{background:none;border:1px solid var(--celadon-mist);border-radius:var(--r-pill);color:var(--ink-soft);font-size:var(--fs-caption);letter-spacing:var(--ls-4);padding:.15rem .85rem;transition:color var(--dur) var(--ease-silk),background-color var(--dur) var(--ease-silk),border-color var(--dur) var(--ease-silk)}.tool-btn:hover{color:var(--gold);border-color:var(--gold)}.tool-btn[aria-pressed=true]{background:var(--celadon-strong);border-color:var(--celadon-strong);color:var(--on-ink)}[data-theme=dark] .tool-btn[aria-pressed=true],[data-theme=dark] #raven-root .rv-btn-primary,[data-theme=dark] #raven-root .num-opt.selected{color:var(--ink-strong)}.post-nav{display:grid;grid-template-columns:repeat(auto-fit,minmax(12rem,1fr));gap:var(--space-1);margin-top:var(--space-3)}.post-nav a{display:block;padding:var(--space-1) 1.3rem;border:1px solid var(--celadon-mist);border-radius:var(--r-sm);background:color-mix(in srgb,var(--paper-deep) 55%,transparent);background-image:none;transition:border-color var(--dur) var(--ease-silk),box-shadow var(--dur) var(--ease-silk),transform var(--dur) var(--ease-silk)}.post-nav a:hover{border-color:color-mix(in srgb,var(--gold) 55%,transparent);transform:translateY(-3px);box-shadow:var(--shadow-2)}.post-nav .pn-dir{display:block;font-size:var(--fs-micro);letter-spacing:var(--ls-5);color:var(--gold-strong);margin-bottom:.35rem}.post-nav .pn-title{color:var(--dai);font-size:var(--fs-ctl);line-height:1.6}.post-nav .pn-next{text-align:right}.post-nav .pn-empty{border:1px dashed var(--celadon-mist);border-radius:var(--r-sm)}.pair-link{display:inline-block;margin-top:.9rem;font-size:var(--fs-note);letter-spacing:var(--ls-3);color:var(--celadon-strong);border:1px solid var(--celadon-mist);border-radius:var(--r-pill);padding:.12rem .9rem;background-image:none}.pair-link:hover{color:var(--gold);border-color:var(--gold)}.post-meta-line{color:var(--ink-soft);font-size:var(--fs-meta);margin:.4rem 0 0}.footer-links{display:flex;justify-content:center;gap:var(--space-2);margin-bottom:.9rem}.footer-links a{font-size:var(--fs-note);letter-spacing:var(--ls-4);color:color-mix(in srgb,var(--on-ink) 75%,transparent);background-image:none}.footer-links a:hover{color:var(--gold-bright)}#fig-lightbox{position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:3.2rem 1.2rem 2.4rem;background:color-mix(in srgb,var(--ink-strong) 80%,transparent);backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px);opacity:0;transition:opacity .3s var(--ease-silk)}#fig-lightbox.open{opacity:1}#fig-lightbox[hidden]{display:none}.lb-stage{position:relative;display:flex;flex-direction:column;align-items:center;gap:.9rem;max-width:100%;max-height:100%;animation:lb-rise .34s var(--ease-silk) both}@keyframes lb-rise{0%{opacity:0;transform:translateY(14px) scale(.975)}to{opacity:1;transform:none}}.lb-img{max-width:94vw;max-height:78vh;width:auto;height:auto;object-fit:contain;filter:drop-shadow(0 24px 50px rgba(0,0,0,.5))}.lb-img.is-raster{background:var(--paper);padding:.7rem;border-radius:var(--r-sm);border:1px solid color-mix(in srgb,var(--gold) 30%,transparent)}[data-theme=dark] #fig-lightbox .lb-img[src$=".svg"]{filter:invert(1)}.lb-caption{margin:0;max-width:min(92vw,40rem);text-align:center;font-size:var(--fs-meta);letter-spacing:var(--ls-2);line-height:1.7;color:color-mix(in srgb,var(--on-ink) 82%,transparent)}.lb-count{font-family:var(--font-latin);letter-spacing:var(--ls-3);color:color-mix(in srgb,var(--on-ink) 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var(--ease-silk),color var(--dur) var(--ease-silk)}.lb-close:hover{background:var(--gold);color:var(--ink-strong);border-color:var(--gold)}body.lb-open{overflow:hidden}@media(max-width:640px){.lb-nav{width:2.7rem;height:2.7rem}.lb-prev{left:.5rem}.lb-next{right:.5rem}}@media(max-width:760px){.main-nav{display:none}.menu-btn{display:inline-flex}.icon-btn kbd{display:none}.post-nav{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}html{scroll-behavior:auto}::view-transition-old(root),::view-transition-new(root){animation:none!important}.js .rv{opacity:1;transform:none}}@media print{*,*:before,*:after{animation:none!important;transition:none!important}#ink-bg,#fx-rain,#scroll-progress,#back-to-top,#fig-lightbox,#search-palette,.drawer,.drawer-backdrop,.scroll-hint,.post-tools,.filter-row,.icon-btn,.menu-btn,.lightbox{display:none!important}.js .rv,.js 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