:root{color-scheme:light;--ground: #cdbda0;--ground-2: #c0ae8e;--ground-3: #ddd0b9;--ground-0: rgb(205 189 160 / 0);--ink: #23201a;--ink-2: rgb(35 32 26 / .8);--ink-3: rgb(35 32 26 / .75);--ink-4: rgb(35 32 26 / .44);--ink-5: rgb(35 32 26 / .26);--rule: rgb(35 32 26 / .2);--accent: #a8392b;--accent-2: rgb(168 57 43 / .55);--accent-3: rgb(168 57 43 / .13);--paper: #f5e2c1;--paper-lit: #f9e9c7;--paper-shade: #e9d4ae;--paper-edge: rgb(120 96 62 / .3);--paper-ink: #3b2518;--font-serif: "Noto Serif SC", "Songti SC", "STSong", "Source Han Serif SC", "SimSun", serif;--font-sans: "Jost", "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;--font-latin: "Jost", "Avenir Next", "Futura", system-ui, sans-serif;--fs-nano: .625rem;--fs-micro: .6875rem;--fs-label: .8125rem;--fs-label-lg: .875rem;--fs-body: .9375rem;--fs-lede: 1.0625rem;--fs-title: clamp(1.625rem, 1.02rem + 2.25vw, 2.75rem);--fs-display: clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem);--track-lat: .2em;--track-lat-wide: .28em;--track-cjk: .15em;--track-cjk-tight: .04em;--track-title: .025em;--lh-flat: 1;--lh-tight: 1.25;--lh-title: 1.3;--lh-label: 1.6;--lh-body: 1.9;--sp-1: .25rem;--sp-2: .5rem;--sp-3: .75rem;--sp-4: 1rem;--sp-5: 1.5rem;--sp-6: 2rem;--sp-7: 3rem;--sp-8: 4rem;--sp-9: 6rem;--sp-10: 8rem;--gutter: clamp(1.125rem, 4vw, 3rem);--measure: 34em;--hair: 1px;--stage-margin: clamp(1.125rem, 6.5vw, 8.5rem);--stage-reserve: 9.5rem;--stage-w: min( 1140px, calc(100vw - 2 * var(--stage-margin)), max(20rem, calc(100svh - var(--stage-reserve))) );--plate-aspect: 16 / 9;--dur-1: .15s;--dur-2: .26s;--dur-3: .48s;--dur-4: .9s;--dur-page: .85s;--ease-out: cubic-bezier(.22, 1, .36, 1);--ease-in-out: cubic-bezier(.65, .05, .3, 1);--ease-page: cubic-bezier(.42, .05, .25, 1);--ease-hair: cubic-bezier(.4, 0, .2, 1);--z-book: 3;--z-caption: 2;--z-chrome: 5;--z-masthead: 40;--z-top: 90}@media(prefers-contrast:more){:root{--ink-2: rgb(35 32 26 / .92);--ink-3: rgb(35 32 26 / .86);--ink-4: rgb(35 32 26 / .64);--ink-5: rgb(35 32 26 / .42);--rule: rgb(35 32 26 / .36)}}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-padding-top:6.5rem}@media(max-width:40em){html{scroll-padding-top:4.75rem}}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}body,h1,h2,h3,h4,p,figure,figcaption,ul,ol,li,blockquote,dl,dd{margin:0;padding:0}ul,ol{list-style:none}img,svg,video,canvas{display:block;max-width:100%;height:auto}button,input,select,textarea{font:inherit;color:inherit}button{background:none;border:0;padding:0;cursor:pointer}body{background:var(--ground);color:var(--ink);font-family:var(--font-sans);font-size:var(--fs-body);font-weight:400;line-height:var(--lh-body);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;font-kerning:normal;overflow-x:clip}h1,h2,h3,h4{font-size:inherit;font-weight:400;line-height:var(--lh-title)}a{color:inherit;text-decoration:none}::selection{background:var(--accent);color:var(--ground-3)}:focus-visible{outline:var(--hair) solid var(--accent);outline-offset:3px;border-radius:0}.t-label{font-family:var(--font-sans);font-size:var(--fs-label);font-weight:400;line-height:var(--lh-label);letter-spacing:var(--track-cjk);color:var(--ink-3)}.t-label-lat{font-family:var(--font-latin);font-size:var(--fs-micro);font-weight:400;line-height:var(--lh-label);letter-spacing:var(--track-lat);color:var(--ink-3)}.t-num{font-family:var(--font-latin);font-variant-numeric:tabular-nums lining-nums;font-feature-settings:"tnum" 1,"lnum" 1;letter-spacing:var(--track-lat)}.t-title{font-family:var(--font-serif);font-size:var(--fs-title);font-weight:400;line-height:var(--lh-title);letter-spacing:var(--track-title);color:var(--ink)}.t-body{font-family:var(--font-serif);font-size:var(--fs-body);font-weight:400;line-height:var(--lh-body);color:var(--ink-2)}.skip{position:absolute;left:-100vw;top:0;z-index:var(--z-top)}.skip:focus-visible{left:var(--gutter);top:var(--sp-3);padding:var(--sp-2) var(--sp-4);background:var(--ground-3);color:var(--ink);font-size:var(--fs-label);letter-spacing:var(--track-cjk-tight)}@property --t{syntax: "<number>"; inherits: true; initial-value: 0;}.book{position:relative;width:100%;aspect-ratio:var(--plate-aspect, 16 / 9);perspective:2600px;perspective-origin:50% 42%;z-index:var(--z-book, 1);touch-action:pan-y;outline:none;--stack-l: 0;--stack-r: 33;--stack-unit: .42px;--fold: 5.5%;--tent: 3.4deg;--pg-shade: 96 74 44;--pg-shade-2: 120 96 62;--pg-spine: 74 58 38;--pg-flap: 40 30 18;--pg-edge: 112 88 56;--pg-spec: 255 248 230;--pg-spec-2: 255 250 236;--sheet-step-x: 2.1px;--sheet-step-y: .7px;--sheet-max: 7;--plate-x: 0%;--plate-t: 0%;--plate-b: 0%;--leaf-r: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 240' preserveAspectRatio='none'%3E%3Cpath d='M0,4.6 C58,1.4 132,2.6 195.2,0 C199.4,58 199.4,182 195.2,240 C132,237.2 58,238.7 0,235.2 Z' fill='%23000'/%3E%3C/svg%3E");--leaf-l: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 240' preserveAspectRatio='none'%3E%3Cpath d='M200,4.6 C142,1.4 68,2.6 4.8,0 C0.6,58 0.6,182 4.8,240 C68,237.2 142,238.7 200,235.2 Z' fill='%23000'/%3E%3C/svg%3E")}.sh-masked-r{-webkit-mask-image:var(--leaf-r);mask-image:var(--leaf-r);-webkit-mask-size:var(--warp-x, 100%) var(--warp-y, 100%);mask-size:var(--warp-x, 100%) var(--warp-y, 100%);-webkit-mask-position:right top;mask-position:right top;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat}.sh-masked-l{-webkit-mask-image:var(--leaf-l);mask-image:var(--leaf-l);-webkit-mask-size:var(--warp-x, 100%) var(--warp-y, 100%);mask-size:var(--warp-x, 100%) var(--warp-y, 100%);-webkit-mask-position:left top;mask-position:left top;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat}.book:focus-visible{outline:none}.book:focus-visible .sh-body{box-shadow:0 0 0 2px var(--ground, #dbdfde),0 0 0 3.5px var(--accent, #2a4a86)}.sh-filters{position:absolute;width:0;height:0;overflow:hidden}.sh-body{position:absolute;top:0;right:0;bottom:0;left:0;transform-style:preserve-3d;--t: 0}.sh-body.is-anim{transition:--t var(--dur-page, .85s) var(--ease-page, cubic-bezier(.42, .05, .25, 1))}.sh-body.is-drag{transition:none}.sh-leaf{position:absolute;top:0;bottom:0;width:50%;overflow:hidden;backface-visibility:hidden;background-color:var(--paper, #f5e2c1);background-image:var(--leaf-under, none);background-size:200% 100%;background-repeat:no-repeat;transition:opacity var(--dur-2, .26s) var(--ease-out, ease)}.sh-leaf--left{background-position:left center}.sh-leaf--right{background-position:right center}.sh-leaf--left{left:0;transform-origin:right center;transform:rotateY(var(--tent))}.sh-leaf--right{left:50%;transform-origin:left center;transform:rotateY(calc(var(--tent) * -1))}.sh-sheets{position:absolute;top:0;bottom:0;width:50%;pointer-events:none}.sh-sheets--l{left:0;transform-origin:right center;transform:rotateY(var(--tent))}.sh-sheets--r{left:50%;transform-origin:left center;transform:rotateY(calc(var(--tent) * -1))}.sh-sheet{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--paper-lit, #f9e9c7);box-shadow:inset 0 0 0 .6px rgb(var(--pg-edge) / .5)}.sh-sheets--r .sh-sheet{transform:translate(calc(var(--i) * var(--sheet-step-x)),calc(var(--i) * var(--sheet-step-y)))}.sh-sheets--l .sh-sheet{transform:translate(calc(var(--i) * var(--sheet-step-x) * -1),calc(var(--i) * var(--sheet-step-y)))}.sh-sheet:nth-child(2n){background:var(--paper-shade, #e9d4ae)}.sh-img{position:absolute;top:var(--plate-t);height:calc(100% - var(--plate-t) - var(--plate-b));width:calc(200% - 2 * var(--plate-x));max-width:none;object-fit:cover;-webkit-user-select:none;user-select:none;-webkit-user-drag:none}.sh-img--left{left:var(--plate-x)}.sh-img--right{left:calc(var(--plate-x) - 100%)}.sh-leaf:after,.sh-face__inner:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;mix-blend-mode:multiply}.sh-leaf--left:after{background:linear-gradient(to left,rgb(var(--pg-shade) / .46) 0,rgb(var(--pg-shade) / .2) 1.6%,rgb(var(--pg-shade-2) / .05) 4.5%,transparent var(--fold))}.sh-leaf--right:after{background:linear-gradient(to right,rgb(var(--pg-shade) / .46) 0,rgb(var(--pg-shade) / .2) 1.6%,rgb(var(--pg-shade-2) / .05) 4.5%,transparent var(--fold))}.sh-leaf:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:1;mix-blend-mode:screen;opacity:.5}.sh-leaf--left:before{background:linear-gradient(to left,transparent calc(var(--fold) * .5),rgb(var(--pg-spec) / .45) calc(var(--fold) * 1),transparent calc(var(--fold) * 2))}.sh-leaf--right:before{background:linear-gradient(to right,transparent calc(var(--fold) * .5),rgb(var(--pg-spec) / .45) calc(var(--fold) * 1),transparent calc(var(--fold) * 2))}.sh-spine{position:absolute;top:-.4%;bottom:-.4%;left:50%;width:2px;transform:translate(-50%);background:linear-gradient(to bottom,transparent 0,rgb(var(--pg-spine) / .42) 6%,rgb(var(--pg-spine) / .5) 50%,rgb(var(--pg-spine) / .42) 94%,transparent 100%);pointer-events:none}.sh-stack{position:absolute;top:3%;bottom:3%;width:10px;pointer-events:none;opacity:calc(.2 + .8*min(1,var(--pages) / 12));background:linear-gradient(to var(--dirx),rgb(var(--pg-shade) / .28),transparent 70%)}.sh-stack--l{--pages: var(--stack-l);--dirx: right;right:50%}.sh-stack--r{--pages: var(--stack-r);--dirx: left;left:50%}.sh-cast{position:absolute;left:-1.5%;right:-1.5%;bottom:-3.4%;height:9%;pointer-events:none;background:radial-gradient(48% 46% at 50% 30%,rgb(23 26 27 / .55),rgb(23 26 27 / .2) 56%,transparent 78%);filter:blur(6px);transition:opacity var(--dur-3, .48s) var(--ease-out, ease),transform var(--dur-3, .48s) var(--ease-out, ease)}.sh-cast:after{content:"";position:absolute;left:-4%;right:-4%;top:-240%;bottom:-90%;background:radial-gradient(50% 50% at 50% 60%,rgb(23 26 27 / .14),transparent 72%);filter:blur(20px);z-index:-1}.book.is-turning .sh-cast{opacity:.82;transform:scaleX(1.035)}.sh-flap{position:absolute;top:0;bottom:0;width:50%;transform-style:preserve-3d;will-change:transform;--dir: -1;transform:translateZ(1px) rotateY(calc(var(--dir) * (var(--tent) + var(--t) * (180deg - 2 * var(--tent)))))}.sh-flap--next{left:50%;transform-origin:left center}.sh-flap--prev{left:0;transform-origin:right center}.sh-face{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;backface-visibility:hidden;background:var(--paper, #f5e2c1)}.sh-face--back{transform:rotateY(180deg)}.sh-face__inner{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden}.sh-face__smear{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;filter:url(#sh-mb-2);opacity:calc(4 * var(--t) * (1 - var(--t)) * max(calc(1 - 2 * var(--t)),calc(2 * var(--t) - 1)) * 1.95);pointer-events:none}.sh-flap--next .sh-face__smear{-webkit-mask-image:linear-gradient(to right,transparent 0,rgb(0 0 0 / .35) 34%,#000 100%);mask-image:linear-gradient(to right,transparent 0,rgb(0 0 0 / .35) 34%,#000 100%)}.sh-flap--prev .sh-face__smear{-webkit-mask-image:linear-gradient(to left,transparent 0,rgb(0 0 0 / .35) 34%,#000 100%);mask-image:linear-gradient(to left,transparent 0,rgb(0 0 0 / .35) 34%,#000 100%)}@media(prefers-reduced-motion:reduce){.sh-face__smear{display:none}}.sh-flap--next .sh-face--front .sh-face__inner:after{background:linear-gradient(to right,rgb(var(--pg-shade-2) / .34) 0,rgb(var(--pg-shade-2) / .07) 4%,transparent var(--fold))}.sh-flap--next .sh-face--back .sh-face__inner:after{background:linear-gradient(to left,rgb(var(--pg-shade-2) / .34) 0,rgb(var(--pg-shade-2) / .07) 4%,transparent var(--fold))}.sh-flap--prev .sh-face--front .sh-face__inner:after{background:linear-gradient(to left,rgb(var(--pg-shade-2) / .34) 0,rgb(var(--pg-shade-2) / .07) 4%,transparent var(--fold))}.sh-flap--prev .sh-face--back .sh-face__inner:after{background:linear-gradient(to right,rgb(var(--pg-shade-2) / .34) 0,rgb(var(--pg-shade-2) / .07) 4%,transparent var(--fold))}.sh-face__light{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.sh-face--front .sh-face__light{background:linear-gradient(to right,rgb(var(--pg-flap) / .5),rgb(var(--pg-flap) / .16));opacity:calc(var(--t) * .72)}.sh-face--back .sh-face__light{background:linear-gradient(to left,rgb(var(--pg-flap) / .5),rgb(var(--pg-flap) / .16));opacity:calc((1 - var(--t)) * .66)}.sh-face__light:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(115deg,transparent 18%,rgb(var(--pg-spec-2) / .5) 48%,transparent 76%);opacity:calc(4 * var(--t) * (1 - var(--t)) * .42)}.sh-zone{position:absolute;top:0;bottom:0;width:50%;padding:0;border:0;background:none;-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer}.sh-zone--prev{left:0;cursor:w-resize}.sh-zone--next{left:50%;cursor:e-resize}.book.is-turning .sh-zone{pointer-events:none}.book.is-fading .sh-leaf{opacity:0;transition-duration:0ms}@media(prefers-reduced-motion:reduce){.book{perspective:none}.sh-leaf--left,.sh-leaf--right,.sh-stack--l,.sh-stack--r{transform:none}.sh-stack--l{transform:translate(-100%)}.sh-stack--r{transform:translate(100%)}.sh-cast{transition:none}}@media(max-width:40em){.book{--stack-unit: .26px;--fold: 7%;perspective:1600px;aspect-ratio:4 / 3}.sh-cast{height:9%;filter:blur(6px)}}.sh-drop{position:absolute;top:-1%;bottom:-1%;width:50%;pointer-events:none;opacity:0;mix-blend-mode:multiply}.sh-drop--r{left:50%;background:linear-gradient(to right,rgb(var(--pg-spine) / .62) 0,rgb(var(--pg-spine) / .24) 18%,transparent 46%)}.sh-drop--l{left:0;background:linear-gradient(to left,rgb(var(--pg-spine) / .62) 0,rgb(var(--pg-spine) / .24) 18%,transparent 46%)}.sh-body[data-dir=next] .sh-drop--r{opacity:calc(4 * var(--t) * (1 - var(--t)) * (1 - var(--t)) * 1.5);transform:scaleX(calc(1 - .45 * var(--t)));transform-origin:left center}.sh-body[data-dir=next] .sh-drop--l{opacity:calc(4 * var(--t) * var(--t) * (1 - var(--t)) * 1.5);transform:scaleX(calc(.55 + .45 * var(--t)));transform-origin:right center}.sh-body[data-dir=prev] .sh-drop--l{opacity:calc(4 * var(--t) * (1 - var(--t)) * (1 - var(--t)) * 1.5);transform:scaleX(calc(1 - .45 * var(--t)));transform-origin:right center}.sh-body[data-dir=prev] .sh-drop--r{opacity:calc(4 * var(--t) * var(--t) * (1 - var(--t)) * 1.5);transform:scaleX(calc(.55 + .45 * var(--t)));transform-origin:left center}@media(prefers-reduced-motion:reduce){.sh-drop{display:none}}.sh-seal{position:absolute;right:7.5%;bottom:8%;z-index:2;display:grid;gap:0;place-content:center;width:8.2%;aspect-ratio:1;min-width:26px;padding:.9%;box-sizing:border-box;color:#b23a2c;background:transparent;border:.14em solid currentColor;border-radius:2px;transform:rotate(var(--tilt, 0deg));mix-blend-mode:multiply;opacity:.82;pointer-events:none;-webkit-mask-image:radial-gradient(115% 115% at 40% 35%,#000 62%,rgb(0 0 0 / .72) 100%);mask-image:radial-gradient(115% 115% at 40% 35%,#000 62%,#000000b8)}.sh-seal i{font-family:var(--font-serif, serif);font-style:normal;font-weight:600;line-height:.98;letter-spacing:0;text-align:center}.sh-seal[data-chars="1"] i,.sh-seal[data-chars="2"] i{font-size:clamp(6px,2.6cqw,15px)}.sh-seal[data-chars="3"],.sh-seal[data-chars="4"]{grid-template-columns:1fr 1fr;grid-auto-flow:column;direction:rtl}.sh-seal[data-chars="3"] i,.sh-seal[data-chars="4"] i{font-size:clamp(4px,1.75cqw,10px);direction:ltr}.book{container-type:inline-size}@media(max-width:40em){.sh-seal{width:11%;right:6%;bottom:6.5%}}.book.is-riffle .sh-leaf .sh-img{filter:url(#sh-mb-1)}.book.is-riffle .sh-face__inner>.sh-img{filter:url(#sh-mb-2)}.book.is-riffle .sh-face__smear img{filter:url(#sh-mb-3)}.book.is-riffle .sh-face__smear{opacity:.95}.book.is-riffle .sh-drop{opacity:0!important}.book.is-riffle .sh-seal{opacity:.4}.book.is-riffle .sh-sheets{opacity:.7}@media(prefers-reduced-motion:reduce){.book.is-riffle .sh-leaf .sh-img,.book.is-riffle .sh-face__smear img{filter:none}}.masthead{position:fixed;inset:0 0 auto;z-index:var(--z-masthead);display:flex;align-items:baseline;justify-content:space-between;gap:var(--sp-5);padding:var(--sp-5) var(--gutter) var(--sp-4)}.masthead:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;z-index:-1;pointer-events:none;background:var(--ground)}.masthead:after{--veil: 2.5rem;content:"";position:absolute;top:100%;left:0;right:0;height:var(--veil);z-index:-1;pointer-events:none;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);-webkit-mask-image:linear-gradient(to bottom,#000 0%,rgb(0 0 0 / .9) 12%,rgb(0 0 0 / .55) 26%,rgb(0 0 0 / .24) 42%,rgb(0 0 0 / .08) 58%,rgb(0 0 0 / .02) 76%,rgb(0 0 0 / 0) 100%);mask-image:linear-gradient(to bottom,#000,#000000e6 12%,#0000008c 26%,#0000003d,#00000014 58%,#00000005 76%,#0000)}@supports (animation-timeline: scroll()){@keyframes masthead-veil-in{0%{opacity:0}to{opacity:1}}.masthead:after{animation:masthead-veil-in linear both;animation-timeline:scroll(root block);animation-range:0 var(--veil)}}.masthead__title{font-size:inherit;font-weight:inherit;line-height:inherit}.masthead__mark{font-family:var(--font-serif);font-size:var(--fs-label-lg);letter-spacing:.3em;color:var(--ink);white-space:nowrap;transition:color var(--dur-1) var(--ease-hair)}.masthead__nav{display:flex;gap:clamp(1.1rem,2.4vw,2rem);font-size:var(--fs-label);margin-right:calc(-1 * var(--track-cjk))}.masthead__nav a{position:relative;line-height:1;letter-spacing:var(--track-cjk);color:var(--ink-3);padding-block:var(--sp-2);transition:color var(--dur-1) var(--ease-hair)}.masthead__nav a:after{content:"";position:absolute;left:0;right:var(--track-cjk);bottom:.1rem;height:var(--hair);background:var(--accent);scale:0 1;transform-origin:left;transition:scale var(--dur-2) var(--ease-out)}.masthead__mark:hover,.masthead__nav a:hover{color:var(--accent)}.masthead__nav a:hover:after{scale:1 1}.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:clamp(3.75rem,8.5vh,5.5rem) var(--gutter) clamp(5.5rem,11vh,7.5rem);text-align:center}.hero__standfirst{font-size:var(--fs-label);line-height:var(--lh-label);letter-spacing:var(--track-cjk);text-indent:var(--track-cjk);color:var(--ink-3);margin-bottom:clamp(1.25rem,3.2vh,2.5rem)}.hero__standfirst span{display:inline-block;margin-inline:.45em;color:var(--accent-2)}.stage{position:relative;z-index:var(--z-book);width:var(--stage-w);max-width:100%}.stage:before{content:"";position:absolute;top:-4.5%;right:-3.5%;bottom:-4.5%;left:-3.5%;border:1px solid rgb(35 32 26 / .16);pointer-events:none;z-index:0}.stage__arrow{position:absolute;top:50%;translate:0 -50%;z-index:var(--z-chrome);display:grid;place-items:center;width:3.5rem;height:3.5rem;color:var(--ink-3);transition:color var(--dur-2) var(--ease-hair),translate var(--dur-2) var(--ease-out)}.stage__arrow:before{content:"";width:.68rem;height:.68rem;border-left:var(--hair) solid currentColor;border-bottom:var(--hair) solid currentColor;transition:width var(--dur-2) 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.idx-group__head:before{visibility:hidden;height:0}.idx-group__name{margin:0;font-size:var(--idx-fs-group);font-weight:500;line-height:var(--lh-tight);letter-spacing:var(--track-cjk-tight);color:var(--ink)}.idx-group__range{margin:0 -.2em 0 0;font-size:var(--fs-micro);line-height:1.2;letter-spacing:var(--track-lat);font-variant-numeric:tabular-nums;color:var(--ink-3)}.idx-plates{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(12,1fr);column-gap:clamp(.75rem,1.4vw,1.25rem);row-gap:clamp(2rem,2.9vw,2.85rem)}.idx-cell{min-width:0}@media(max-width:47.99rem){.idx-cell{grid-column:span 6}.idx-cell:first-child{grid-column:span 12}}@media(min-width:48rem){.idx-cell{grid-column:span 6}.idx-cell:nth-last-child(-n+3){grid-column:span 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ease}.idx-item__line{display:flex;justify-content:space-between;gap:.75rem;align-items:baseline;align-items:last baseline}.idx-item__landmark{font-family:var(--font-serif);font-size:var(--fs-lede);line-height:1.35;letter-spacing:var(--track-cjk-tight);color:var(--ink);text-wrap:balance;padding-bottom:.35rem;border-bottom:1px solid transparent}.idx-item__folio{flex:none;margin-right:-.2em;font-size:var(--fs-micro);line-height:1.4;letter-spacing:var(--track-lat);font-variant-numeric:tabular-nums;color:var(--ink-3);transition:color .22s ease}@media(hover:hover){.idx-item:hover .idx-item__img{opacity:1;filter:none}.idx-item:hover .idx-item__region,.idx-item:hover .idx-item__folio{color:var(--ink-2)}}.idx-item[aria-current=true] .idx-item__img{opacity:1;filter:none}.idx-item[aria-current=true] .idx-item__landmark{border-bottom-color:var(--ink)}.idx-item[aria-current=true] .idx-item__region,.idx-item[aria-current=true] .idx-item__folio{color:var(--ink)}@media(prefers-reduced-motion:reduce){.idx-item__img,.idx-item__region,.idx-item__folio{transition:none}}:root{--g-lit: 255 246 228;--g-shade: 58 44 26;--g-lit-a: .17;--g-shade-a: .2;--grain-size: 170px;--grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='170' height='170'%3E%3Cfilter id='w' color-interpolation-filters='sRGB'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.95 0.42' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='matrix' values='0.0924 0.0924 0.0924 0 0.36 0.0924 0.0924 0.0924 0 0.36 0.0924 0.0924 0.0924 0 0.36 0 0 0 0 1'/%3E%3C/filter%3E%3Crect width='170' height='170' filter='url(%23w)'/%3E%3C/svg%3E");--g-cast: var(--grain), radial-gradient( 70% 56% at 50% 40%, rgb(var(--g-lit) / var(--g-lit-a)), rgb(var(--g-lit) / 0) 78% ), radial-gradient( 116% 86% at 50% 38%, rgb(var(--g-shade) / 0) 32%, rgb(var(--g-shade) / var(--g-shade-a)) 100% )}body:before,.masthead:before{background-color:var(--ground);background-image:var(--g-cast);background-attachment:fixed;background-size:var(--grain-size) var(--grain-size),auto,auto;background-blend-mode:soft-light,normal,normal}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;pointer-events:none}:root{--edge-a: .32}:root[data-edition=gouache] main:before{background-image:var(--edge-bg-gouache, none);opacity:calc(var(--edge-a) * .85)}main:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;pointer-events:none;background-image:var(--edge-bg, none);background-size:cover;background-position:center;background-repeat:no-repeat;mix-blend-mode:multiply;opacity:var(--edge-a);-webkit-mask-image:linear-gradient(to bottom,transparent 0,rgb(0 0 0 / .7) 5rem,#000 10rem);mask-image:linear-gradient(to bottom,transparent 0,rgb(0 0 0 / .7) 5rem,#000 10rem)}@media(max-width:63.99rem){main:before{display:none}}@media(prefers-contrast:more){:root{--g-lit-a: .1;--g-shade-a: .08;--grain: none}main:before{display:none}}@media(forced-colors:active){body:before,main:before{display:none}.masthead:before{background-image:none}}:root[data-edition=gouache]{--paper: #eee7dc;--paper-lit: #f6f1e8;--paper-shade: #dcd2c3;--paper-edge: rgb(90 80 66 / .3);--paper-ink: #2b3340}:root[data-edition=gouache] .book{--plate-x: 7%;--plate-t: 5.5%;--plate-b: 8.5%}:root[data-edition=gouache] .book{--leaf-r: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 240' preserveAspectRatio='none'%3E%3Cpath d='M0,1.2 C58,0.4 132,0.7 197.6,0 C198.8,58 198.8,182 197.6,240 C132,239.3 58,239.6 0,238.8 Z' fill='%23000'/%3E%3C/svg%3E");--leaf-l: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 240' preserveAspectRatio='none'%3E%3Cpath d='M200,1.2 C142,0.4 68,0.7 2.4,0 C1.2,58 1.2,182 2.4,240 C68,239.3 142,239.6 200,238.8 Z' fill='%23000'/%3E%3C/svg%3E");--sheet-step-x: 1.15px;--sheet-step-y: .42px;--sheet-max: 12;--stack-unit: .26px;--pg-shade: 62 68 86;--pg-shade-2: 84 90 108;--pg-spine: 44 50 66;--pg-flap: 30 34 46;--pg-edge: 122 128 142;--pg-spec: 252 253 255;--pg-spec-2: 255 255 255}:root[data-edition=gouache] .sh-masked-l,:root[data-edition=gouache] .sh-masked-r{-webkit-mask-size:100% 100%;mask-size:100% 100%}:root[data-edition=gouache] .sh-leaf{background-image:none}:root[data-edition=gouache] .sh-leaf--left:before{background:linear-gradient(to left,transparent calc(var(--fold) * .5),rgb(var(--pg-spec) / .4) calc(var(--fold) * 1),transparent calc(var(--fold) * 2)),linear-gradient(163deg,transparent 20%,rgb(var(--pg-spec) / .5) 47%,transparent 68%)}:root[data-edition=gouache] .sh-leaf--right:before{background:linear-gradient(to right,transparent calc(var(--fold) * .5),rgb(var(--pg-spec) / .4) calc(var(--fold) * 1),transparent calc(var(--fold) * 2)),linear-gradient(197deg,transparent 20%,rgb(var(--pg-spec) / .5) 47%,transparent 68%)}:root[data-edition=gouache] .sh-face__light:after{background:linear-gradient(115deg,transparent 30%,rgb(var(--pg-spec-2) / .62) 48%,transparent 66%);opacity:calc(4 * var(--t) * (1 - var(--t)) * .5)}:root[data-edition=gouache] .sh-seal{display:none}:root[data-edition=gouache],:root[data-edition=gouache][data-palette=linen]{--ground: #cfc6b3;--ground-2: #c2b8a3;--ground-3: #ded6c6;--ground-0: rgb(207 198 179 / 0);--ink: #25262a;--ink-2: rgb(37 38 42 / .8);--ink-3: rgb(37 38 42 / .75);--ink-4: rgb(37 38 42 / .44);--ink-5: rgb(37 38 42 / .26);--rule: rgb(37 38 42 / .2);--accent: #3f4c74;--accent-2: rgb(63 76 116 / .55);--accent-3: rgb(63 76 116 / .13);color-scheme:light}:root[data-edition=gouache] .idx-item__img{opacity:.86;filter:saturate(.78) contrast(.98)}.ed-switch{position:fixed;right:14px;bottom:14px;z-index:var(--z-top);display:flex;flex-direction:column;gap:3px;padding:3px;border-radius:4px;background:var(--ground-3);box-shadow:0 0 0 1px var(--rule),0 10px 28px -18px #0000008c;font-family:var(--font-sans);opacity:.62;transition:opacity var(--dur-2) var(--ease-out)}.ed-switch:hover,.ed-switch:focus-within{opacity:1}.ed-switch__tabs{display:flex;gap:2px}.ed-switch__tab{flex:1;border:0;border-radius:2px;padding:6px 14px;background:transparent;color:var(--ink-3);font:inherit;font-size:var(--fs-label);letter-spacing:var(--track-cjk-tight);cursor:pointer;transition:background var(--dur-1) var(--ease-hair),color var(--dur-1) var(--ease-hair)}.ed-switch__tab:hover{color:var(--ink);background:var(--ground-2)}.ed-switch__tab[aria-selected=true]{background:var(--ink);color:var(--ground-3)}.ed-switch__palettes{display:flex;gap:2px}.ed-switch__palettes[hidden]{display:none}.ed-switch__swatch{flex:1;border:0;border-radius:2px;padding:5px 9px;background:var(--ground-2);color:var(--ink-3);font:inherit;font-size:var(--fs-micro);letter-spacing:var(--track-cjk-tight);cursor:pointer;transition:background var(--dur-1) var(--ease-hair),color var(--dur-1) var(--ease-hair)}.ed-switch__swatch[hidden]{display:none}.ed-switch__swatch:hover{color:var(--ink)}.ed-switch__swatch[aria-checked=true]{background:var(--accent);color:var(--ground-3)}.ed-switch :focus-visible{outline:1px solid var(--ink);outline-offset:1px}@media(max-width:40em){.ed-switch{right:auto;left:10px;bottom:10px}}@media(prefers-reduced-motion:reduce){.ed-switch,.ed-switch__tab,.ed-switch__swatch{transition:none}}:root{--glass-d: clamp(7.5rem, 13vw, 12rem);--glass-rim: calc(var(--glass-d) * .058)}.sh-glass{position:absolute;width:var(--glass-d);height:var(--glass-d);translate:-50% -50%;z-index:3;border-radius:50%;cursor:grab;touch-action:none;transition:opacity var(--dur-2, .26s) var(--ease-out, ease),scale var(--dur-2, .26s) var(--ease-out, ease);box-shadow:0 1px 2px #3a2c1a4d,0 10px 18px #3a2c1a3d,0 26px 40px #3a2c1a33,0 48px 66px #3a2c1a21}.sh-glass:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;pointer-events:none;z-index:2;background:linear-gradient(146deg,#fdf7e9,#e6d7b4 14%,#b69d70,#7d6740 50%,#cdbb92 66%,#f4ead3 80%,#9b8459);box-shadow:inset 0 1px 1px #fffc,inset 0 -2px 3px #46341a80;-webkit-mask-image:radial-gradient(circle closest-side,transparent 0,transparent 88.2%,#000 89.8%,#000 100%);mask-image:radial-gradient(circle closest-side,transparent 0,transparent 88.2%,#000 89.8%,#000 100%)}.sh-glass:active,.sh-glass.is-held{cursor:grabbing;scale:1.02}.sh-glass.is-away,.sh-glass.is-off{opacity:0;pointer-events:none}.sh-glass.is-off{scale:.86}.sh-glass__lens{position:absolute;inset:var(--glass-rim);border-radius:50%;overflow:hidden;background-repeat:no-repeat;background-color:var(--ground, #cdbda0);box-shadow:inset 0 0 0 1px #3428168c,inset 0 4px 12px #281e0e47,inset 0 -7px 16px #fffaf024}.sh-glass__lens:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;pointer-events:none;background:radial-gradient(36% 26% at 29% 19%,#ffffff4d,#fff0 76%),radial-gradient(24% 16% at 74% 86%,#ffffff1f,#fff0 80%),linear-gradient(150deg,#ffffff0f 0,#ffffff0f 18%,#fff0 42%),radial-gradient(circle,#0000 54%,#3a2c1a1a 76%,#2e221057);box-shadow:inset 0 0 0 2px #82a2c442,inset 0 0 0 4px #ce9e7026}.sh-glass__grip{position:absolute;left:50%;top:50%;width:calc(var(--glass-d) * .74);height:calc(var(--glass-d) * .125);transform-origin:0 50%;transform:rotate(40deg) translate(calc(var(--glass-d) * .33),-50%);border-radius:calc(var(--glass-d) * .06);z-index:-1;background:linear-gradient(#ffffff75 0,#ffffff75 13%,#fff0 44%,#00000042),linear-gradient(90deg,#d9bd82 0,#d9bd82 14%,#a9884e 14%,#a9884e 20%,#6d4c2b 20%,#6d4c2b 62%,#5a3d22 62%,#5a3d22 92%,#7a563180 92%,#7a563180);box-shadow:0 8px 15px #3a2c1a42,0 18px 26px #3a2c1a24}.sh-glass-toggle{position:absolute;right:-3.4rem;bottom:-3rem;z-index:var(--z-chrome, 5);display:grid;place-items:center;width:2.25rem;height:2.25rem;padding:0;border:var(--hair, 1px) solid var(--rule, rgb(35 32 26 / .2));border-radius:50%;background:transparent;color:var(--ink-3, rgb(35 32 26 / .75));cursor:pointer;transition:color var(--dur-1, .15s) var(--ease-hair, ease),border-color var(--dur-1, .15s) var(--ease-hair, ease),background-color var(--dur-1, .15s) var(--ease-hair, ease)}.sh-glass-toggle svg{width:1rem;height:1rem;display:block}.sh-glass-toggle:hover{color:var(--accent, #a8392b);border-color:var(--accent-2, rgb(168 57 43 / .55))}.sh-glass-toggle[aria-pressed=true]{color:var(--accent, #a8392b);border-color:var(--accent-2, rgb(168 57 43 / .55));background:var(--accent-3, rgb(168 57 43 / .13))}.sh-glass-toggle:focus-visible{outline:none;box-shadow:0 0 0 2px var(--ground, #cdbda0),0 0 0 3.5px var(--accent, #a8392b)}@media(max-width:47.99rem){.sh-glass,.sh-glass-toggle{display:none}}@media(forced-colors:active){.sh-glass,.sh-glass-toggle{display:none}}@property --k{syntax: "<number>"; inherits: true; initial-value: 1;}#frame,#board{display:contents}html[data-portrait],html[data-portrait] body{height:100%;overflow:hidden;overscroll-behavior:none}html[data-portrait] #frame{display:block}html[data-portrait] body{display:grid;place-items:center}html[data-portrait]{scroll-padding-top:0}html[data-vp=record] body{background:radial-gradient(circle at 50% 44%,#2b2721 0,#1a1712 46%,#0e0c09)}html[data-vp=record]{--ar-w: 3;--ar-h: 4;--vp-h: 844px;--vp-w: calc(var(--vp-h) * var(--ar-w) / var(--ar-h))}html[data-vp=record] #frame{position:relative;width:min(100vw,calc(100vh * var(--ar-w) / var(--ar-h)),1080px);height:min(100vh,calc(100vw * var(--ar-h) / var(--ar-w)),1440px);overflow:hidden;isolation:isolate;box-shadow:0 0 0 1px #fff6e41a,0 28px 90px #0000008c}html[data-vp=xhs]{--vp-w: 390px;--vp-h: 844px}html[data-vp=xhs] #frame{position:fixed;top:0;right:0;bottom:0;left:0;overflow:hidden;isolation:isolate;contain:layout paint}html[data-vp=xhs] body{background:var(--ground)}html[data-portrait] body:before{display:none}html[data-portrait] #frame:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;z-index:0;pointer-events:none;background-color:var(--ground);background-image:var(--g-cast);background-size:var(--grain-size) var(--grain-size),auto,auto;background-blend-mode:soft-light,normal,normal}html[data-portrait] main:before{display:none}html[data-portrait] #board{position:absolute;left:calc(50% - var(--vp-w) / 2);top:calc(50% - var(--vp-h) / 2);display:flex;flex-direction:column;align-items:center;width:var(--vp-w);height:var(--vp-h);overflow:hidden;transform:scale(var(--k));transform-origin:center center}html[data-portrait]{--pt-side: 44px;--pt-top: 78px;--pt-bottom: 84px;--gutter: var(--pt-side);--fs-title: 40px;--stage-w: calc(var(--vp-w) - 2 * var(--pt-side))}html[data-vp=xhs]{--pt-side: 22px;--safe-top: calc(env(safe-area-inset-top, 0px) / var(--k));--safe-bottom: calc(env(safe-area-inset-bottom, 0px) / var(--k))}html[data-portrait] .masthead{justify-content:center;padding:calc(34px + var(--safe-top, 0px)) var(--pt-side) 0}html[data-portrait] .masthead:before,html[data-portrait] .masthead:after{display:none}html[data-portrait] .masthead__nav,html[data-portrait] .skip{display:none}html[data-portrait] .masthead__mark{font-size:15px;letter-spacing:.34em}html[data-portrait] main{display:flex;flex:1;min-height:0;width:100%}html[data-portrait] .hero{flex:1;min-height:0;width:100%;padding:var(--pt-top) var(--pt-side) var(--pt-bottom)}html[data-portrait] .book{--stack-unit: .26px;--fold: 7%;perspective:1600px;aspect-ratio:4 / 3}html[data-portrait] .sh-cast{height:9%;filter:blur(6px)}html[data-portrait] .book{touch-action:none}html[data-portrait] .sh-seal{width:11%;right:6%;bottom:6.5%}html[data-portrait] .hero__standfirst{font-size:13px;margin-bottom:26px}html[data-portrait] .caption{margin-top:30px}html[data-portrait] .index,html[data-portrait] .colophon,html[data-portrait] .hero__scroll{display:none}html[data-portrait] .stage__arrow{animation:none}html[data-portrait] .sh-glass,html[data-portrait] .sh-glass-toggle,html[data-vp=xhs] .ed-switch{display:none}html[data-portrait] .stage__arrow{position:fixed;top:auto;bottom:calc(24px + var(--safe-bottom, 0px));translate:none;width:64px;height:64px}html[data-portrait] .stage__arrow--prev{right:auto;left:calc(var(--pt-side) - 12px)}html[data-portrait] .stage__arrow--next{left:auto;right:calc(var(--pt-side) - 12px)}html[data-portrait] .stage__arrow--prev:hover,html[data-portrait] .stage__arrow--prev:focus-visible{translate:-.25rem 0}html[data-portrait] .stage__arrow--next:hover,html[data-portrait] .stage__arrow--next:focus-visible{translate:.25rem 0}html[data-portrait] .stage__arrow:active{color:var(--accent)}@media(orientation:landscape)and (max-height:600px){html[data-vp=xhs] #board{visibility:hidden;pointer-events:none}html[data-vp=xhs] #frame:after{content:"请竖屏观看";position:absolute;top:0;right:0;bottom:0;left:0;z-index:1;display:grid;place-items:center;color:var(--ink-3);font-family:var(--font-sans);font-size:var(--fs-label);letter-spacing:var(--track-cjk);text-indent:var(--track-cjk)}}