@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Thai:wght@400;500;600&family=Noto+Serif+Thai:wght@400;500;600&display=swap');
:root{--paper:#fcfbf8;--ink:#253147;--muted:#69717c;--line:#e0ddd6;--accent:#90703d;--panel:#fffefa;--reader-size:22px;--reading-font:'Noto Serif Thai',serif;color-scheme:light}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 'Noto Sans Thai',sans-serif}body[data-theme=sepia]{--paper:#f0e5d0;--panel:#f8efde;--line:#d5c5a7;--ink:#493c2c;--muted:#75634d;--accent:#816035}body[data-theme=night]{--paper:#202329;--panel:#2b2e35;--ink:#e3e0d8;--muted:#adaea8;--line:#464950;--accent:#ddbf88;color-scheme:dark}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit}button{font:inherit;cursor:pointer;color:inherit;border:1px solid var(--line);background:transparent;border-radius:9px;min-height:44px;padding:7px 14px}button:hover:not(:disabled){background:var(--line)}button:disabled{opacity:.35;cursor:default}a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:4px}.toolbar{height:76px;position:sticky;top:0;z-index:5;background:var(--paper);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 36px;gap:20px}.back{text-decoration:none;font-size:27px;display:flex;align-items:center;gap:9px;min-height:44px}.back span{font-size:14px}.book-title{text-align:center;font-family:'Noto Serif Thai',serif;font-size:18px}.book-title span{display:block;font:11px 'Noto Sans Thai',sans-serif;color:var(--muted);letter-spacing:.08em}.tools{display:flex;gap:8px}.tools button{border:0;min-width:44px;font-size:20px;padding:3px 8px}.big-a{font-size:27px}.edition-banner{font-size:12px;letter-spacing:.04em;color:var(--muted);text-align:center;padding:19px 15px}main{max-width:780px;margin:0 auto;padding:34px 45px 70px;font-family:var(--reading-font);font-size:var(--reader-size);line-height:2.05;overflow-wrap:break-word}main:focus{outline:0}article h2{font-size:1.8em;line-height:1.65;font-weight:500;margin:20px 0 1em}article h3{font-size:1.1em;line-height:1.8}article p{margin:0 0 1.35em;text-align:start}.source{font-family:'Noto Sans Thai',sans-serif;font-size:12px;color:var(--muted);letter-spacing:.05em}.signature{text-align:right;margin-top:2.5em;font-weight:500}.titlepage{text-align:center;border:1px solid #b59a67;outline:1px solid var(--line);outline-offset:7px;margin:30px 8px 10px;padding:50px 32px}.titlepage p{text-align:center}.titlepage h2{font-size:clamp(28px,1.9em,58px);margin:.75em 0 .2em}.titlepage .subtitle{font-size:1.1em;color:var(--accent)}.small-label{font:12px 'Noto Sans Thai',sans-serif;letter-spacing:.05em;color:var(--muted)}.titlepage p:not(.subtitle):not(.small-label):not(.writer){font-size:.72em;line-height:2.1}.writer{font-size:.9em;font-weight:500}.ornament{color:var(--accent);margin:30px 0}.isbn{margin-top:35px!important;color:var(--muted)}.edition dt{font-size:.78em;color:var(--muted);margin-top:1.6em}.edition dd{margin:0 0 1em;font-size:.88em}.editor-note{font-family:'Noto Sans Thai',sans-serif;font-size:.72em;line-height:1.9;border-left:2px solid var(--accent);padding:12px 18px;margin:30px 0;color:var(--muted)}.toc-chapter{margin:45px 0}.toc-chapter h3{padding-bottom:14px;border-bottom:1px solid var(--line)}.toc-chapter h3 small{display:block;font:12px 'Noto Sans Thai',sans-serif;color:var(--muted);margin-top:9px}.toc-list{list-style:none;padding:0;font-size:.8em;line-height:1.85}.toc-list li{display:grid;grid-template-columns:1fr auto;gap:15px;padding:9px 0;border-bottom:1px dotted var(--line)}.toc-list .depth-1{padding-left:1em}.toc-list .depth-2{padding-left:2em}.page-number{font-variant-numeric:tabular-nums;color:var(--muted)}.section-navigation{max-width:780px;margin:0 auto 110px;padding:0 30px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px}.section-navigation button{border:0}.section-navigation span{color:var(--muted);font-size:12px}.reading-footer{position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:space-between;gap:20px;padding:12px 35px calc(12px + env(safe-area-inset-bottom));font-size:12px;border-top:1px solid var(--line);background:var(--paper);color:var(--muted)}.progress-track{position:fixed;bottom:0;left:0;right:0;height:3px;background:var(--line);z-index:6}#progress{height:100%;width:0;background:var(--accent)}dialog{border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:18px;padding:26px;max-width:430px;width:calc(100% - 32px);max-height:85dvh;overflow:auto;box-shadow:0 20px 90px #0003}dialog::backdrop{background:#1118;backdrop-filter:blur(3px)}.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:20px}.dialog-top h2{font-size:21px;margin:0;font-weight:500}.dialog-top button{border:0}.dialog-note{font-size:13px;color:var(--muted);margin:15px 0;line-height:1.9}.chapter-menu{display:grid;margin:25px 0}.chapter-menu a{padding:15px 8px;text-decoration:none;border-bottom:1px solid var(--line);border-radius:4px;display:flex;gap:18px}.chapter-menu a[aria-current=true]{background:var(--line)}.chapter-menu a span{color:var(--accent);font-size:12px;align-self:center}.epub-link{font-size:13px;display:block;line-height:1.8;margin-top:25px;text-underline-offset:4px}.setting-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:25px 0;font-size:14px}.size-buttons{display:flex;align-items:center;gap:12px}.size-buttons output{width:24px;text-align:center}fieldset{padding:0;border:0;margin:22px 0}legend{font-size:14px;margin-bottom:12px}.choices{display:flex;gap:10px}.choices button{flex:1;font-size:14px}.choices button[aria-pressed=true]{border:2px solid var(--accent);font-weight:600;background:var(--line)}.skip{position:absolute;top:-100px;background:var(--panel);padding:10px;z-index:9}.skip:focus{top:0}.no-js{padding:25px;margin-bottom:70px}.js article[hidden]{display:none}@media(max-width:600px){.toolbar{height:65px;padding:0 15px;gap:8px}.back span{display:none}.book-title{font-size:16px}.tools{gap:1px}main{padding:22px 24px 45px}.titlepage{margin:23px 2px 5px;padding:35px 15px}.titlepage h2{font-size:1.55em}.edition-banner{font-size:11px;padding:15px 10px}.section-navigation{padding:0 12px}.section-navigation button{padding:8px}.reading-footer{padding-left:22px;padding-right:22px}.toc-list .depth-2{padding-left:1em}dialog{padding:22px}}@media(prefers-reduced-motion:no-preference){dialog[open]{animation:appear .15s ease-out}@keyframes appear{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}}
/* Original illustrations accompany reflowable text. */
figure{margin:2em 0;break-inside:avoid}figure img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:5px;background:white}figcaption{font-size:.75em;line-height:1.8;color:var(--muted);margin:.8em 0}article h4{font-size:1em;line-height:1.7;margin:2em 0 .6em}article ol{padding-left:1.6em}article li{margin:.65em 0}article sup{font-size:.65em;line-height:0}.references{font-family:'Noto Sans Thai',sans-serif;font-size:.8em;overflow-wrap:anywhere}.figure-labels{font-size:.8em;line-height:1.7}.figure-labels dt{font-weight:600;margin:1em 0 .3em}.figure-labels dd{margin-left:0}