:root{--bg:#fcfbf8;--panel:#f3f0e9;--text:#252420;--muted:#77736b;--line:#ded9cf;--accent:#9a372b;--content:820px}
*{box-sizing:border-box}html{scroll-behavior:auto}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Noto Serif CJK SC","Noto Serif CJK TC","Songti SC",serif;line-height:1.9}.layout{display:grid;grid-template-columns:290px minmax(0,1fr) 260px;min-height:100vh}.left,.right{position:sticky;top:0;height:100vh;overflow:auto;background:var(--panel);padding:22px 18px}.left{border-right:1px solid var(--line)}.right{border-left:1px solid var(--line)}.library-back{display:block;color:var(--muted);text-decoration:none;font:13px system-ui;margin-bottom:28px}.brand{font-weight:760;font-size:20px;line-height:1.35}.subtitle{color:var(--muted);font-size:13px;margin:8px 0 18px}.search{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text)}.lang-switch{margin:12px 0}.lang-switch a{display:inline-block;border:1px solid var(--line);border-radius:8px;padding:5px 10px;background:var(--bg);color:var(--text);text-decoration:none;font-size:13px}.book-nav{margin-top:18px}.book-nav a,.toc a{display:block;color:var(--muted);text-decoration:none;padding:6px 8px;border-radius:7px;line-height:1.35}.book-nav a:hover,.book-nav a.active,.toc a:hover,.toc a.active{background:#e7e1d7;color:var(--accent)}main{min-width:0;padding:28px 48px 100px}.article{max-width:var(--content);margin:auto}.book-title{padding:8vh 0 10vh;border-bottom:1px solid var(--line);margin-bottom:52px}.eyebrow{font:700 11px/1.4 system-ui;letter-spacing:.14em;color:var(--accent)}.book-title h1{font-size:38px;line-height:1.3;margin:12px 0}.book-title p{color:var(--muted)}.breadcrumbs{color:var(--muted);font-size:13px;margin-bottom:14px}.article h2{font-size:25px;line-height:1.45;margin:52px 0 23px;scroll-margin-top:20px}.article h3{font-size:19px;margin:37px 0 14px;scroll-margin-top:20px}.source-paragraph{margin:0 0 1.15em;text-align:justify;text-justify:inter-ideograph}.page-span{display:inline}.footnote-ref a,.backref{color:var(--accent);text-decoration:none;font-weight:700}.footnotes{border-top:1px solid var(--line);margin-top:44px;padding-top:20px}.footnote{font-size:14px;color:#47443f;margin:0 0 12px;scroll-margin-top:20px}.right h3{margin-top:0;font-size:14px}.toc a{font-size:13px;border-left:2px solid transparent}.toc a.active{border-left-color:var(--accent)}.page-meta{font-size:12px;color:var(--muted)}.chapter{padding-bottom:36px}.selection-menu{position:fixed;z-index:1000;min-width:190px;padding:6px;background:#fff;border:1px solid #d2cdc3;border-radius:10px;box-shadow:0 12px 35px #0002}.selection-menu button{width:100%;border:0;background:transparent;text-align:left;padding:9px 11px;border-radius:7px;color:#24211d;cursor:pointer}.selection-menu button:hover{background:#f1ede5}.library-page{background:#f4f0e8}.library-header{max-width:1100px;margin:0 auto;padding:11vh 28px 6vh}.library-header h1{font-size:48px;margin:10px 0 2px}.library-header p{color:var(--muted)}.shelf{max-width:1100px;margin:auto;padding:0 28px 80px}.book-card{display:grid;grid-template-columns:110px 1fr;gap:28px;padding:32px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 18px 45px #4e3c2510}.book-mark{height:150px;display:grid;place-items:center;background:#a53a2e;color:#fff;border-radius:3px;writing-mode:vertical-rl;letter-spacing:.2em;font-size:19px}.book-kicker,.card-meta,.byline{color:var(--muted);font-size:13px}.book-card h2{font-size:28px;margin:3px 0}.card-actions{display:flex;gap:10px;margin-top:20px}.card-actions a{background:#292722;color:white;text-decoration:none;padding:8px 14px;border-radius:8px;font-size:14px}.card-actions a+ a{background:#eee9df;color:#292722}
@media(max-width:1180px){.layout{grid-template-columns:260px minmax(0,1fr)}.right{display:none}}@media(max-width:760px){.layout{display:block}.left{position:static;height:auto;border-right:0;border-bottom:1px solid var(--line)}.book-nav{max-height:260px;overflow:auto}main{padding:24px 18px 80px}.book-title h1{font-size:30px}.article h2{font-size:22px}.source-paragraph{text-align:left}.library-header h1{font-size:38px}.book-card{grid-template-columns:70px 1fr;padding:20px;gap:18px}.book-mark{height:130px}}
@media(prefers-color-scheme:dark){:root{--bg:#191815;--panel:#22201c;--text:#e9e5dd;--muted:#aaa49a;--line:#3d3932;--accent:#e38778}.footnote{color:#d4cfc6}.selection-menu{background:#25231f;border-color:#48433b}.selection-menu button{color:#eee9e0}.selection-menu button:hover{background:#39352f}.library-page{background:#191815}.book-card{background:#22201c}.card-actions a+ a{background:#37332d;color:#eee9e0}}