:root{--paper:#f5f1e8;--glass:#fbf8efdb;--ink:#294542;--muted:#6f7d73;--line:#9baa9b40;--size:20px;--shadow:0 15px 40px #2945420a;color-scheme:light}html[data-theme=dark]{--paper:#152422;--glass:#253734ed;--ink:#e2e7d8;--muted:#afbead;--line:#d3dfc529;color-scheme:dark}html[data-theme=white]{--paper:#fff;--glass:#fffffff0;--ink:#242f2d;--muted:#62736e;--line:#263e3325}*{box-sizing:border-box}html{scroll-padding-top:135px}body{margin:0;background:radial-gradient(at 85% 0,#799f8c17,transparent 45%),var(--paper);color:var(--ink);font:16px/1.7 'Be Vietnam Pro',Geneva,Verdana,Arial,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit;color:inherit}button,a{touch-action:manipulation}button{cursor:pointer;border:1px solid var(--line);background:transparent;border-radius:999px;padding:8px 12px}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--ink);outline-offset:4px}header{max-width:1440px;width:calc(100% - 48px);position:sticky;top:15px;z-index:20;margin:20px auto 50px;padding:17px 24px;display:flex;gap:20px;align-items:center;justify-content:space-between;border:1px solid var(--line);border-radius:24px;background:var(--glass);backdrop-filter:blur(22px);box-shadow:var(--shadow)}.brand{display:flex;gap:13px;align-items:center;line-height:1.3;font-size:20px;min-width:0}.brand small{display:block;letter-spacing:.16em;font:9px/1.8 'Courier New',monospace;margin-top:7px;color:var(--muted)}.book-icon{font-size:36px;color:var(--muted)}.tools{display:flex;gap:7px;align-items:center;flex-shrink:0}.tools button{white-space:nowrap}.tools #toc-toggle{display:none}body.is-reading .tools #toc-toggle{display:block}main{max-width:1340px;width:calc(100% - 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@media(max-width:1100px){.books{grid-template-columns:1fr 1fr}.book-card{grid-template-columns:95px 1fr}#reading:not([hidden]){grid-template-columns:220px minmax(0,1fr);gap:40px}}
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@media(max-width:400px){.books{grid-template-columns:1fr}.book-card{display:grid;grid-template-columns:85px 1fr;gap:17px}.book-card img{margin:0}.brand{font-size:16px}.tools button{padding:7px}h1{font-size:36px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.tools select{font:12px inherit;background:var(--paper);color:var(--ink);border:1px solid var(--line);padding:8px 5px;border-radius:12px;max-width:60px}#chapter h1,#chapter h2,#chapter h3{line-height:1.5}.book-card h2{line-height:1.5}@media(max-width:400px){header{flex-wrap:wrap}.tools{margin-left:auto}.brand{font-size:15px}#reading{scroll-margin-top:160px}body.toc-open #toc{top:140px}}

.toc-cover{display:block;width:105px;margin:25px 0 20px;box-shadow:5px 8px 18px #0003;border-radius:3px 7px 7px 3px;overflow:hidden}.toc-cover img{display:block;width:100%;height:auto}.toc-cover+#book-title{margin-top:15px}