:root{color-scheme:light;--ink:#182e2c;--soft:#4e615e;--accent:#236053;--line:#d0d7cc;--paper:#fbf9f3;--line2:#e5e4d9;--serif:"Iowan Old Style","Palatino Linotype","Book Antiqua",Georgia,"Noto Serif CJK SC","Songti SC",SimSun,serif;--sans:"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 var(--serif)}a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:.2em}a:hover{text-decoration-thickness:2px;color:#102f28}a:focus-visible,summary:focus-visible{outline:3px solid #b4772d;outline-offset:4px}html{scroll-padding-top:1.5em}body:lang(zh-Hans){font-family:"Noto Serif CJK SC","Songti SC",SimSun,var(--serif)}.shell{width:min(1120px,calc(100% - 3rem));margin:auto}.mast{border-bottom:1px solid var(--line);background:#f2f3e9}.mast .shell,footer .shell{display:flex;align-items:center;justify-content:space-between;gap:1rem}.mast .shell{min-height:4.5rem}.mast a,footer a{text-decoration:none}.wordmark{display:flex;align-items:center;gap:.62rem;color:var(--ink);font:600 17px/1.25 var(--serif)}.wordmark i{position:relative;height:18px;width:15px;display:block;border:1.5px solid var(--ink);transform:skewY(-11deg)}.wordmark i:after{content:"";position:absolute;inset:2px -4px -3px 2px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink)}.mast nav{display:flex;gap:.3rem;align-items:center}.mast nav a{font:600 .79rem var(--sans);color:var(--soft);padding:.48rem .7rem;border-radius:4px}.mast nav a[aria-current]{background:#dfe7d9;color:#234538}.skip{position:absolute;left:10px;top:-100px;background:white;z-index:3;padding:.5em}.skip:focus{top:8px}
.intro{padding:clamp(3rem,7vw,6rem) 0 clamp(2.4rem,5vw,4.6rem);max-width:58rem}.intro h1,.article-head h1{font:400 clamp(3rem,7.5vw,6.25rem)/.98 var(--serif);letter-spacing:-.055em;margin:0}.intro>p{font:400 clamp(1.25rem,2.4vw,1.55rem)/1.49 var(--serif);max-width:43rem;color:var(--soft);margin:1.6rem 0 0}.books{border-top:1px solid var(--ink)}.book{display:grid;grid-template-columns:minmax(155px,.67fr) minmax(0,1.43fr);gap:clamp(2rem,6vw,6rem);padding:clamp(2rem,5vw,3.9rem) 0;border-bottom:1px solid var(--line);align-items:center}.plate-link{text-decoration:none;display:block}.plate{position:relative;aspect-ratio:1.32/1;overflow:hidden;display:grid;place-items:center;border-radius:3px}.matrix{background:linear-gradient(117deg,#0f3537,#184946);color:#d8e6c2}.matrix:before{content:"";position:absolute;inset:0;background-image:linear-gradient(90deg,#dedeb30f 1px,transparent 1px),linear-gradient(0deg,#dedeb30f 1px,transparent 1px);background-size:11% 15%;transform:scale(1.25) skewY(-7deg)}.matrix span{display:block;position:relative;border-inline:2px solid #cee2c6;font:400 clamp(21px,3vw,40px)/1.2 Georgia,serif;letter-spacing:.08em;padding:.05em .32em}.matrix span:before,.matrix span:after{content:"";height:calc(100% - .2em);width:calc(100% - .16em);border-top:2px solid;border-bottom:2px solid;position:absolute;left:-2px;top:-1px;clip-path:polygon(0 0,10% 0,10% 100%,0 100%)}.matrix span:after{transform:scaleX(-1);left:auto;right:-2px}.orbit{background:radial-gradient(circle at 54% 48%,#dfa766 3px,transparent 4px),repeating-radial-gradient(ellipse at 54% 48%,#dba871 0 1px,transparent 1.6px 13%),#603c32}.orbit i{position:absolute;inset:0;background:linear-gradient(30deg,transparent calc(50% - .5px),#d8a77a90 50%,transparent calc(50% + 1px))}.copy{max-width:39rem}.copy h2{margin:0 0 .45rem;font:400 clamp(2rem,4.2vw,3.7rem)/1.06 var(--serif);letter-spacing:-.045em}.copy h2 a{color:var(--ink);text-decoration:none}.copy>p{margin:.6rem 0 1rem;color:var(--soft)}figure{margin:1.25rem 0 1.6rem;padding-left:1.1rem;border-left:2px solid #a48656}figure blockquote{margin:0;font-size:1.18em;line-height:1.5}figcaption{font: .77rem/1.5 var(--sans);margin-top:.35em}figcaption a{color:var(--soft)}.editions{display:flex;gap:.5em;flex-wrap:wrap}.editions a{border:1px solid var(--line);border-radius:3px;text-decoration:none;color:var(--ink);font:600 .82rem/1.2 var(--sans);padding:.62em .83em}.editions a:hover{border-color:var(--accent);background:#e6ecdf}.collection{padding-bottom:2.8rem}
.reader{max-width:47.7rem;padding:0 1.55rem;margin:0 auto}.article-head{padding:clamp(2.4rem,5vw,5rem) 0 1.5rem;border-bottom:1px solid var(--line)}.crumb{display:inline-block;margin-bottom:1.6rem;text-decoration:none;font:600 .83rem var(--sans)}.article-head h1{font-size:clamp(2.9rem,6vw,5.3rem)}.deck{margin:1rem 0;color:var(--soft);font-size:clamp(1.2rem,2.3vw,1.5rem);line-height:1.45}.edition,.toc,.note{font-family:var(--sans);font-size:.86rem}.edition{margin-top:1.6rem;color:var(--soft)}.edition span{padding:0 .55em;color:#85978b}.note{color:#596258;background:#f1f0e6;padding:.7rem .95rem;border-radius:2px;margin-top:1.2rem;line-height:1.55}.toc{margin:1rem 0 1.8rem;color:var(--accent)}summary{cursor:pointer;width:fit-content}.toc nav{display:flex;flex-wrap:wrap;gap:.3em 1em;margin:.6rem 0}.prose{font-size:1.13rem;line-height:1.79;overflow-wrap:break-word}.prose p{margin:0 0 1em}.prose blockquote{margin:2.1em 0 1.2em;border-left:3px solid #75977f;padding-left:1.1em;color:#234c44;font-weight:500;font-size:1.12em;line-height:1.55}.prose h2{margin:1.3em 0 .5em;font:600 1.35em/1.3 var(--serif);letter-spacing:-.02em}.prose h2 strong{font-weight:inherit}.prose ul,.prose ol{margin:.2em 0 1.2em;padding-inline-start:1.45em}.prose li{margin:.36em 0}.prose li::marker{color:var(--accent)}.prose hr{border:0;border-top:1px solid var(--line);margin:1.75rem auto;width:33%}.prose hr+hr{display:none}.prose strong{font-weight:650}.formula{font-family:Georgia,"Cambria Math",serif}.next{display:grid;gap:.18em;margin:3rem 0;padding:1.4em 0;border-top:1px solid var(--line)}.next span{font: .8rem var(--sans);color:var(--soft)}.next a{font-size:1.5em;text-decoration:none}.prose [id]:target{outline:2px solid #789c83;outline-offset:5px;border-radius:2px}footer{margin-top:2rem;border-top:1px solid var(--line);font:.85rem var(--sans);color:var(--soft)}footer .shell{min-height:5.3rem}
:lang(zh-Hans) .prose{line-height:1.95;letter-spacing:.016em}:lang(zh-Hans) .intro h1,:lang(zh-Hans) .article-head h1,:lang(zh-Hans) .copy h2{letter-spacing:0}:lang(zh-Hans) .copy h2{font-weight:500}
@media(max-width:620px){.shell{width:calc(100% - 2rem)}.mast .shell{min-height:3.55rem}.mast nav{gap:0}.mast nav a{padding:.4rem .43rem;font-size:.73rem}.wordmark{font-size:.91rem}.book{grid-template-columns:1fr;gap:1.25rem}.plate{aspect-ratio:2.2}.matrix span{font-size:1.7rem}.reader{padding:0 1.15rem}.prose{font-size:1.04rem}.intro h1{font-size:3.25rem}.intro{padding:2.8rem 0}.edition{margin-top:1.15rem}.next{margin:2rem 0}.copy>p{margin-bottom:.6rem}}
@media print{.mast,.crumb,.toc,.note+details,footer,.next,.skip,.edition a,.editions{display:none}.reader,.shell{width:100%;max-width:none;padding:0}.article-head{padding:0}body{color:#111;background:white}.prose{font-size:11pt;line-height:1.45}a{color:inherit}.prose blockquote{break-inside:avoid}.article-head h1{font-size:30pt}}