:root{--band-color: #e5d9c1;--band-h: 160px;--beian-color: #C9A227;--beian-fs: 18px;--beian-fw: 400;--beian-lh: 32px;--beian-top: 736.215px;--bookmark-bg: #1A1A2E;--bookmark-color: #C9A227;--bookmark-h: 32px;--bookmark-notch: 16px;--bookmark-notch-color: #efe8d8;--bookmark-notch-depth: 10px;--bookmark-optical: -.84px;--bookmark-px: 12px;--bookmark-text-shift: 5px;--card-blurb-color: #57606c;--card-blurb-fs: 14px;--card-blurb-lh: 32px;--card-blurb-maxh: 64px;--card-blurb-mt: 1.73px;--card-border: 1px solid #ddd3c0;--card-h: 128px;--card-hover-color: #C9A227;--card-hover-dur: .1s;--card-label-color: #C9A227;--card-label-fs: 14px;--card-label-lh: 32px;--card-label-style: italic;--card-media-ar: 4 / 3;--card-media-gap: 12px;--card-pad: 12px;--card-text-shift: 4.785px;--card-title-color: #1b1f24;--card-title-fs: 18px;--card-title-fw: 700;--card-title-lh: 32px;--card-titlerow-h: 32px;--cband-color: #efe8d8;--cband-texture-image: radial-gradient(circle, #e3dac7 0, #e3dac7 .5px, transparent 1.2px);--cband-texture-repeat: repeat;--cband-texture-size: 4px 4px;--ch-gap: 64px;--ch-title-fs: 16px;--ch-title-fw: 400;--ch-title-lh: 32px;--chapters-mt: 64px;--date-color: #1b1f24;--date-fs: 18px;--date-fw: 400;--date-lh: 32px;--date-mt: 6.090519px;--doc-min-height: max(100vh, 961.215px);--entry-gap: 32px;--entry-gap-x: 12px;--entry-hover-color: #C9A227;--entry-icon-align: baseline;--entry-icon-filter: brightness(0) saturate(100%) invert(90%) sepia(99%) saturate(1388%) hue-rotate(-37deg) brightness(77%) contrast(108%);--entry-icon-h: 17.632653px;--entry-icon-size: 18px;--entry-icon-y: 1.976327px;--entry-label-color: #C9A227;--entry-label-fs: 14px;--entry-label-lh: 32px;--entry-label-style: italic;--entry-leader-color: #C9BFA8;--entry-leader-offset: -5.84px;--entry-leader-thick: 2px;--entry-shift: 8.215px;--entry-title-color: #1b1f24;--entry-title-fs: 18px;--entry-title-fw: 700;--entry-title-lh: 32px;--font-stack: "Source Han Serif CN", "Source Han Serif SC", "Noto Serif CJK SC", "Noto Serif SC", "Songti SC", serif;--fs-body: 18px;--hero-bottom: 352px;--hero-sub-fs: 28px;--hero-sub-fw: 700;--hero-sub-lh: 32px;--ink: #1b1f24;--intro-align: justify;--intro-color: #1b1f24;--intro-fs: 18px;--intro-h: auto;--intro-lh: 32px;--intro-pb: 23.796875px;--intro-pt: 8.203125px;--lh-body: 32px;--menu-bg: #1A1A2E;--menu-color: #C9A227;--menu-fs: 18px;--menu-fw: 400;--menu-lh: 32px;--menu-px: 16px;--menu-py: 16px;--menu-sep-between: 1px solid rgba(201, 162, 39, .35);--menu-sep-color: rgba(201, 162, 39, .35);--menu-sep-top: 1px solid rgba(201, 162, 39, .35);--menu-sep-w: 1px;--nav-col-width: 32px;--nav-color: #C9A227;--nav-fs: 14px;--nav-fw: 400;--nav-gap: 32px;--nav-pb: 32px;--nav-writing: vertical-rl;--paper-color: #f7f2e9;--paper-texture-image: radial-gradient(circle, #e3dac7 0, #e3dac7 .5px, transparent 1.2px);--paper-texture-repeat: repeat;--paper-texture-size: 4px 4px;--position-doc: absolute;--position-vp: fixed;--pre-align: justify;--pre-color: #1b1f24;--pre-fs: 18px;--pre-fw: 400;--pre-gap: 0px;--pre-indent: 36px;--pre-lh: 32px;--row-offset: 24;--row-step: 32px;--rule-color: #ddd3c0;--rule-h: 1px;--seal-box-h: 67.983402px;--seal-box-w: 67.84265px;--seal-mt: 53.926079px;--seal-right-inset: 27.234433px;--spine-bg: #1A1A2E;--spine-height: 100vh;--spine-overflow-y: auto;--spine-padding-top: 24px;--spine-title-color: #C9A227;--spine-title-font: "南西油墨宋", "Source Han Serif CN", "Source Han Serif SC", "Noto Serif CJK SC", "Noto Serif SC", "Songti SC", serif;--spine-title-fs: 24px;--spine-title-fw: 700;--spine-title-ls: 8px;--spine-w: 64px;--spine-writing: vertical-rl;--sub-top: 475.89px;--tail-min: 32px;--title-ink: #D0AE42;--toggle-appearance: none;--toggle-bar-gap: 4px;--toggle-bar-h: 2px;--toggle-color: #C9A227;--toggle-inset: 16px;--toggle-radius: 0px;--toggle-tap-h: 40px;--toggle-w: 20px;--topnav-bg: #1A1A2E;--topnav-h: 64px;--topnav-title-color: #C9A227;--topnav-title-font: "南西油墨宋", "Source Han Serif CN", "Source Han Serif SC", "Noto Serif CJK SC", "Noto Serif SC", "Songti SC", serif;--topnav-title-fs: 24px;--topnav-title-fw: 700;--topnav-title-inset: 16px;--topnav-title-ls: 8px}@media(max-width:767px){:root{--band-ml: 0%;--band-width: 100%;--beian-left: 4.2667%;--beian-paired-display: none;--beian-row-display: block;--beian-width: 91.4667%;--cards-columns: repeat(1,1fr);--cards-gap: 32px 20px;--cband-left: 0%;--cband-width: 100%;--ch0-min-height: 448px;--ch0-ml: 0%;--ch0-position: static;--ch0-top: auto;--ch0-width: 100%;--ch1-min-height: 448px;--ch1-ml: 0%;--ch1-position: static;--ch1-top: auto;--ch1-width: 100%;--ch2-min-height: 512px;--ch2-ml: 0%;--ch2-position: static;--ch2-top: auto;--ch2-width: 100%;--chapters-band-mt: 87.785px;--chapters-min-height: 0;--chapters-ml: 4.2667%;--chapters-pb: 0;--chapters-position: static;--chapters-width: 91.4667%;--doc-min-height: max(100vh, 961.215px);--hero-gap-1: min(12px, 2.14375vw);--hero-gap-2: min(8px, 1.42917vw);--hero-gap-3: min(12px, 2.14375vw);--hero-left: calc(50% - (min(512px, 91.4667%)/2)) ;--hero-size: min(120px, 21.4375vw);--hero-width: min(512px, 91.4667%);--preface-ml: 4.2667%;--preface-mt: 928.215px;--preface-width: 91.4667%;--rule-ml: 0%;--rule-width: 100%;--spine-display: none;--sub-left: 4.2667%;--sub-width: 91.4667%;--topnav-display: flex}}@media(min-width:768px)and (max-width:1023px){:root{--band-ml: 64px;--band-width: calc(100% - 64px) ;--beian-left: 64px;--beian-paired-display: none;--beian-row-display: block;--beian-width: calc(100% - 64px) ;--cards-columns: repeat(1,1fr);--cards-gap: 32px 20px;--cband-left: 64px;--cband-width: calc(100% - 64px) ;--ch0-min-height: 416px;--ch0-ml: 0%;--ch0-position: static;--ch0-top: auto;--ch0-width: 100%;--ch1-min-height: 416px;--ch1-ml: 0%;--ch1-position: static;--ch1-top: auto;--ch1-width: 100%;--ch2-min-height: 480px;--ch2-ml: 0%;--ch2-position: static;--ch2-top: auto;--ch2-width: 100%;--chapters-band-mt: 87.785px;--chapters-min-height: 0;--chapters-ml: calc((100% - 64px) * .1306818182 + 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auto;--ch0-width: 100%;--ch1-min-height: 224px;--ch1-ml: 0%;--ch1-position: static;--ch1-top: auto;--ch1-width: 100%;--ch2-min-height: 256px;--ch2-ml: 0%;--ch2-position: static;--ch2-top: auto;--ch2-width: 100%;--chapters-band-mt: 87.785px;--chapters-min-height: 0;--chapters-ml: calc((100% - 64px)/32 + 64px) ;--chapters-pb: 0;--chapters-position: static;--chapters-width: calc((100% - 64px)*.9375) ;--doc-min-height: max(100vh, 668.89px);--hero-gap-1: 12px;--hero-gap-2: 8px;--hero-gap-3: 12px;--hero-left: calc((100% - 64px) * .2552083333 - 192px);--hero-size: 120px;--hero-width: 512px;--preface-ml: calc((100% - 64px)/2 + 64px) ;--preface-mt: 96.215px;--preface-width: calc((100% - 64px)*.46875) ;--rule-ml: 64px;--rule-width: calc(100% - 64px) ;--spine-display: flex;--sub-left: calc((100% - 64px)/32 + 64px) ;--sub-width: calc((100% - 64px) * .4479166667);--topnav-display: none}}@keyframes topnav-menu-in{0%{opacity:0}to{opacity:1}}.topnav.is-open .topnav__menu{animation:topnav-menu-in .46s 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rgba(221,197,120,.56)}}.spine,.spine__title,.hero__subtitle,.beian,.spine__nav,.spine__nav a,.right-page .preface,.right-page .preface p,.right-page .colophon__date,.chapters,.chapters *,.topnav__title,.topnav__menu,.topnav__menu a{user-select:none;-webkit-user-select:none}.site-footer{flex:0 0 auto;display:flex;flex-direction:column;align-items:center;padding:0}.site-footer__links{margin:0 0 8px;font-size:14px;line-height:24px;font-weight:400}.site-footer__links a{color:#8f8776;text-decoration:none}.site-footer__links a:hover{color:#c9a227}.site-footer__sep{color:#c9a227;margin:0 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auto;min-width:0;overflow:hidden;font-size:var(--card-title-fs);line-height:var(--card-title-lh);font-weight:var(--card-title-fw);color:var(--card-title-color);white-space:nowrap;text-overflow:ellipsis;transition:color var(--card-hover-dur) linear}.card__label{flex:0 0 auto;font-size:var(--card-label-fs);font-style:var(--card-label-style);color:var(--card-label-color);line-height:var(--card-label-lh);transition:color var(--card-hover-dur) linear}.card__blurb{margin-top:var(--card-blurb-mt);overflow:hidden;font-size:var(--card-blurb-fs);line-height:var(--card-blurb-lh);color:var(--card-blurb-color);max-height:var(--card-blurb-maxh)}.card__icon{position:absolute;bottom:var(--card-pad);right:var(--card-pad);z-index:2;line-height:0}.card__icon img{display:inline-block;width:16px;height:16px}.card:hover{border-color:var(--card-hover-color)}.card:hover .card__title,.card:hover .card__label{color:var(--card-hover-color)}.card__icon:hover img{filter:var(--entry-icon-filter)}.content-tail{flex:1 0 var(--tail-min)}.footer-rule{display:block;flex:0 0 auto;height:var(--rule-h);background:var(--rule-color);margin-left:var(--rule-ml);width:var(--rule-width)}.footer-band{display:flex;flex:0 0 auto;height:var(--band-h);align-items:center;justify-content:center;background:var(--band-color);margin-left:var(--band-ml);width:var(--band-width)}.topnav{position:var(--position-vp);top:0;left:0;right:0;z-index:30;display:var(--topnav-display, none);align-items:center;justify-content:space-between;height:var(--topnav-h);background:var(--topnav-bg);padding:0 var(--toggle-inset) 0 var(--topnav-title-inset)}.topnav__title{font-family:var(--topnav-title-font);font-size:var(--topnav-title-fs);font-weight:var(--topnav-title-fw);color:var(--topnav-title-color);letter-spacing:var(--topnav-title-ls);text-decoration:none}.topnav__toggle{display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:var(--toggle-bar-gap);width:var(--toggle-w);height:var(--toggle-tap-h);margin:0;padding:0;border:0;border-radius:var(--toggle-radius);appearance:var(--toggle-appearance);-webkit-appearance:var(--toggle-appearance);background:none;cursor:pointer}.topnav__bar{display:block;height:var(--toggle-bar-h);background:var(--toggle-color)}.topnav__menu{display:none;position:var(--position-vp);top:var(--topnav-h);left:0;right:0;background:var(--menu-bg);padding:var(--menu-py) var(--menu-px);border-top:var(--menu-sep-top)}.topnav.is-open .topnav__menu{display:block}.topnav__menu a{display:block;font-size:var(--menu-fs);font-weight:var(--menu-fw);line-height:var(--menu-lh);color:var(--menu-color);text-decoration:none}.topnav__menu a+a{border-top:var(--menu-sep-between)}