:root{--bg:#faf7f2;--surface:#fff;--border:#e8dfd5;--text:#2b231e;--text-muted:#786b63;--accent:#a94b30;--accent-decorative:#c25e3e;--secondary:#3d5a4c;--radius:8px;--accent-bg:#fdf2ed;--reading-size:18px;--bar-height:76px;color-scheme:light}
:root[data-theme="dark"]{--bg:#201915;--surface:#2f2722;--border:#57483e;--text:#fbf6f0;--text-muted:#d8ccbf;--accent:#e2895a;--accent-decorative:#c25e3e;--secondary:#a8c7b5;--accent-bg:rgba(226,137,90,.12);color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--bar-height) + 20px)}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif}a{color:var(--accent);text-underline-offset:3px}button,input,select{font:inherit}button,select,input{border:1px solid var(--border);border-radius:6px;background:var(--surface);color:var(--text)}button{padding:8px 12px;cursor:pointer;min-height:40px}button:hover{border-color:var(--accent);background:var(--accent-bg)}button:disabled{opacity:.4;cursor:default}input,select{min-height:44px;padding:9px 12px;max-width:100%;width:100%}input::placeholder{color:var(--text-muted)}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}button:focus-visible,input:focus-visible,select:focus-visible{outline-offset:2px}[hidden]{display:none!important}h1,h2,h3,p{margin-top:0}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link{position:fixed;top:-100px;left:12px;background:var(--surface);padding:12px;z-index:100}.skip-link:focus{top:8px}
.topbar{position:sticky;top:0;z-index:20;min-height:var(--bar-height);padding:13px max(24px,calc((100vw - 1320px)/2));display:flex;align-items:center;justify-content:space-between;gap:20px;background:var(--surface);border-bottom:1px solid var(--border);transition:transform .25s ease;font-size:14px}.topbar.hidden{transform:translateY(-100%)}.topbar:focus-within{transform:translateY(0)}.brand{display:flex;gap:12px;align-items:center;color:var(--text);text-decoration:none;font-weight:650;letter-spacing:.03em;line-height:1.4}.brand small{display:block;color:var(--text-muted);font-size:11px;letter-spacing:.01em;font-weight:400}.brand-mark{width:36px;height:38px;border:1px solid var(--border);background:var(--accent-bg);border-radius:6px;display:grid;place-items:center;color:var(--accent);font:26px Georgia,serif}.reading-tools,.font-controls{display:flex;align-items:center;gap:8px}.font-controls{gap:0;border:1px solid var(--border);border-radius:6px;overflow:hidden}.font-controls button{border:0;border-radius:0;padding:6px 10px}.font-controls output{min-width:43px;text-align:center;font-size:12px;color:var(--text-muted);font-variant-numeric:tabular-nums}.reading-tools>button{font-size:12px}
.page-shell{max-width:1320px;margin:0 auto;padding:44px 24px 32px}.intro{margin-bottom:30px;max-width:860px}.eyebrow{font-size:11px;letter-spacing:.13em;font-weight:650;color:var(--accent);margin-bottom:14px}.intro h1{font-size:clamp(27px,4vw,40px);font-weight:650;letter-spacing:.05em;margin-bottom:6px;line-height:1.4}.english-title{font:clamp(20px,3vw,28px)/1.4 Georgia,"Times New Roman",serif;color:var(--text-muted);margin-bottom:18px}.intro-copy{color:var(--text-muted);line-height:1.9;margin-bottom:16px}.intro-copy span{font-size:14px}.edition-tags{display:flex;flex-wrap:wrap;gap:8px}.edition-tags span{border:1px solid var(--border);border-radius:4px;font-size:11px;color:var(--text-muted);padding:4px 9px;background:var(--surface)}.filter-panel{padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:30px}.search-row{display:flex;align-items:center;gap:24px}.search-label{flex:0 0 135px;font-weight:600}.search-label span{display:block;font-size:11px;font-weight:400;color:var(--text-muted)}.search-input-wrap{position:relative;flex:1;min-width:0}.search-input-wrap>span{position:absolute;left:13px;top:4px;font-size:26px;color:var(--text-muted)}.search-input-wrap input{padding-left:42px}.help{font-size:12px;color:var(--text-muted);margin:8px 0 18px 159px}.filter-row{display:flex;gap:16px;align-items:flex-end}.control-group{flex:1;max-width:340px;min-width:0}.control-group label{font-size:12px;color:var(--text-muted);display:block;margin-bottom:5px}.quiet-button{color:var(--text-muted);margin-left:auto;font-size:12px;min-height:44px}.topic-explorer{margin-top:20px;border-top:1px solid var(--border);padding-top:15px}.topic-explorer summary{font-size:13px;cursor:pointer;color:var(--text-muted)}#topic-count{color:var(--accent);font-size:11px;margin-left:5px}.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}.chip{min-height:32px;font-size:11px;border-radius:20px;padding:5px 11px;color:var(--text-muted);overflow-wrap:anywhere;max-width:100%}.chip[aria-pressed="true"]{color:var(--accent);border-color:var(--accent);background:var(--accent-bg)}.active-topic{display:flex;align-items:center;gap:10px;margin-top:12px;font-size:12px;color:var(--accent)}.active-topic button{font-size:12px;min-height:32px;padding:3px 9px}
.library-layout{display:grid;grid-template-columns:290px minmax(0,1fr);gap:30px;align-items:start}.index-panel{position:sticky;top:calc(var(--bar-height) + 20px);background:var(--surface);padding:18px;border:1px solid var(--border);border-radius:var(--radius);transition:top .25s ease;max-height:calc(100dvh - var(--bar-height) - 40px);display:flex;flex-direction:column;min-height:200px}body.topbar-hidden .index-panel{top:20px;max-height:calc(100dvh - 40px)}.index-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:14px}h2{font-size:15px;letter-spacing:.04em;margin-bottom:0}h2 span{font-size:10px;letter-spacing:.01em;color:var(--text-muted);font-weight:400;display:block}.count-badge{background:var(--accent-bg);color:var(--accent);font-size:11px;padding:3px 8px;border-radius:20px}.index-panel input{font-size:12px;flex-shrink:0}.index-help{font-size:10px;color:var(--text-muted);margin:8px 0 10px}#question-index{overflow:auto;overscroll-behavior:contain;min-height:0;scrollbar-width:thin}.index-book-title{font-size:11px;color:var(--text-muted);letter-spacing:.02em;margin:17px 0 8px;padding-bottom:6px;border-bottom:1px solid var(--border)}.index-link{display:flex;align-items:flex-start;gap:9px;padding:10px 8px;border-radius:5px;text-decoration:none;color:var(--text);font-size:12px;line-height:1.65}.index-link:hover,.index-link[aria-current="location"]{background:var(--accent-bg);color:var(--accent)}.index-number{font-size:10px;min-width:29px;color:var(--accent);padding-top:2px;font-variant-numeric:tabular-nums}.index-question{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.index-empty{font-size:12px;color:var(--text-muted);padding:15px 0}main{min-width:0}.results-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:0 0 17px}.results-heading p{font-size:12px;color:var(--text-muted);margin:0;text-align:right}.question-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:20px;padding:26px 30px;scroll-margin-top:calc(var(--bar-height) + 20px)}.question-card:target{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-bg)}.card-header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}.question-meta{font-size:11px;letter-spacing:.04em;color:var(--text-muted);font-weight:550}.question-meta strong{display:inline-block;background:var(--accent-bg);color:var(--accent);border-radius:4px;padding:3px 8px;margin-right:8px;font-size:12px;font-weight:600}.card-actions{display:flex;gap:6px}.card-actions button{min-height:32px;padding:4px 8px;font-size:11px;color:var(--text-muted)}.language-section+.language-section{margin-top:25px;padding-top:24px;border-top:1px solid var(--border)}.language-label{font-size:10px;color:var(--text-muted);letter-spacing:.09em;margin-bottom:9px}.reading-text{font-size:var(--reading-size);line-height:1.95;overflow-wrap:anywhere;white-space:pre-wrap}.question-text{font-weight:600;margin-bottom:16px;letter-spacing:.015em}.answer-text{margin-bottom:0;font-weight:400}.references{margin-top:18px;border-left:2px solid var(--border);padding-left:14px}.references-label{font-size:10px;letter-spacing:.04em;color:var(--text-muted);margin:0 0 5px}.references-text{margin:0;color:var(--text-muted)}.language-section[lang="en"] .reading-text{line-height:1.8}.availability-note{font-size:12px;color:var(--text-muted);margin-bottom:15px}.card-footer{margin-top:23px;padding-top:15px;border-top:1px solid var(--border);display:flex;gap:10px;align-items:flex-start;justify-content:space-between}.card-footer .chips{margin:0}.question-nav{display:flex;gap:12px;flex-shrink:0;padding-top:5px}.question-nav a{font-size:11px;text-decoration:none}mark{background:#fff0aa;color:#24292f;border-radius:2px;padding:0 1px}.notice{padding:25px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);font-size:14px}.notice h3{font-size:17px}.notice p{color:var(--text-muted)}.error{border-color:#cf665a;color:var(--text)}.sources{margin:46px 0 0;padding-top:25px;border-top:1px solid var(--border);font-size:12px;color:var(--text-muted)}.sources h2{margin-bottom:18px}.sources p{line-height:1.9;margin-bottom:13px}.source-note{font-size:11px}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:50;background:var(--text);color:var(--bg);border-radius:6px;padding:12px 20px;font-size:13px;max-width:calc(100vw - 32px);box-shadow:0 4px 22px #0002}
@media(min-width:1500px){.library-layout{gap:40px}}
@media(max-width:900px){.library-layout{grid-template-columns:240px minmax(0,1fr);gap:20px}.question-card{padding:22px}.card-footer{flex-direction:column}.page-shell{padding:30px 20px}.topbar{padding:13px 20px}.filter-panel{padding:20px}.search-label{flex-basis:115px}.help{margin-left:139px}}
@media(max-width:700px){:root{--bar-height:72px}.topbar{padding:10px 14px;gap:8px}.brand{gap:7px;font-size:13px}.brand small{font-size:9px;max-width:115px}.brand-mark{width:28px;height:32px;font-size:22px}.reading-tools{gap:6px}.font-controls button{padding:6px 7px;font-size:12px}.font-controls output{font-size:10px;min-width:35px}.reading-tools>button{padding:6px 8px;font-size:10px;max-width:66px;line-height:1.3}.page-shell{padding:28px 14px}.intro{margin-bottom:23px}.intro h1{font-size:27px;letter-spacing:.025em}.intro-copy span{display:block;margin-top:4px}.filter-panel{padding:16px;margin-bottom:22px}.search-row{display:block}.search-label{display:block;font-size:12px;margin-bottom:8px}.search-label span{display:inline;margin-left:6px}.search-input-wrap input{font-size:12px;padding-left:34px}.search-input-wrap>span{left:10px}.help{margin:8px 0 15px;font-size:10px}.filter-row{flex-wrap:wrap;gap:10px}.control-group{flex:1 1 140px;max-width:none}.control-group label{font-size:10px}select{font-size:12px;padding:9px 7px}.quiet-button{font-size:11px;margin:0;min-height:36px;width:100%}.library-layout{display:block}.index-panel{position:static;max-height:none;min-height:0;padding:14px;margin-bottom:24px}.index-heading{margin-bottom:10px}.index-heading h2 span{display:inline;margin-left:6px}#question-index{max-height:200px;overscroll-behavior:auto}.index-link{padding:8px}.index-book-title{margin-top:10px}.results-heading{margin-bottom:13px}.results-heading p{font-size:10px;max-width:175px}.question-card{padding:20px 17px;margin-bottom:16px}.card-header{align-items:flex-start;margin-bottom:16px;gap:6px}.question-meta{font-size:10px;line-height:1.8;max-width:190px}.question-meta strong{margin-right:5px}.card-actions{gap:4px}.card-actions button{padding:4px 6px;font-size:10px}.question-nav{justify-content:space-between;width:100%;padding-top:6px}.question-nav a{font-size:12px}.sources{margin-top:30px}}
/* Compact landing chrome leaves more room for the actual reader. */
.page-shell{padding-top:28px}.intro{margin-bottom:20px}.eyebrow{margin-bottom:8px}.intro h1{font-size:clamp(27px,4vw,34px)}.english-title{margin-bottom:10px}.intro-copy{margin-bottom:10px}.filter-panel{padding:18px;margin-bottom:24px}.help{margin-bottom:12px}.topic-explorer{margin-top:14px;padding-top:12px}
@media(max-width:700px){.page-shell{padding-top:22px}.intro{margin-bottom:16px}.intro-copy{font-size:14px}.filter-panel{padding:14px}.help,.control-group label,.index-help{font-size:12px}.index-panel input,.index-link{font-size:13px}.font-controls button{min-width:36px;min-height:44px}.reading-tools>button{min-height:44px}}
.section-tabs{display:flex;gap:8px;padding:0 0 20px;border-bottom:1px solid var(--border);margin-bottom:24px}.section-tabs a{display:inline-flex;align-items:center;min-height:44px;padding:8px 20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text-muted);font-size:14px;text-decoration:none}.section-tabs a[aria-current="page"]{color:var(--accent);background:var(--accent-bg);border-color:var(--accent)}.section-tabs a:hover{color:var(--accent)}
/* Yan Lam palette: warm ivory, terracotta and cypress. */
.index-book-title,.references-label{color:var(--secondary)}
.intro h1{color:var(--accent-decorative);font-family:"Noto Serif TC","Songti TC",Georgia,serif}.citation-marker{font-size:.62em;line-height:0;vertical-align:super;color:var(--accent);padding:0 .08em;font-weight:500}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}