:root{--ink:#24282b;--muted:#687274;--line:#dce3e0;--accent:#267362;--soft:#f4f7f5;--vocab:#fff1a8;--word:#dff0de;--phrase:#e1edf9;--syntax:#efe5f5;--size:19px;--header:116px;color-scheme:light}
*{box-sizing:border-box;letter-spacing:0}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header) + 20px)}body{margin:0;background:white;color:var(--ink);font:14px/1.65 "Segoe UI","Microsoft YaHei",sans-serif}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer;border:0;background:none}a{color:var(--accent);text-decoration:none}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:3px}button:disabled{opacity:.4;cursor:default}svg{width:18px;height:18px;stroke-width:1.7;flex-shrink:0}button:hover{background:var(--soft)}.icon{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:4px;flex-shrink:0}.app-header{position:sticky;top:0;z-index:10;background:#fffffff5;border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.topline,.toolbar{max-width:1520px;margin:auto;display:flex;align-items:center;padding:10px 28px;gap:20px}.topline{min-height:64px}.brand{color:var(--ink);display:flex;align-items:center;gap:10px;line-height:1.2;min-width:200px}.brand>svg{width:26px;height:26px;color:var(--accent)}.brand b{color:var(--accent)}.brand small{display:block;color:var(--muted);font-size:10px;margin-top:6px}.header-actions{margin-left:auto;display:flex;gap:3px}#units{display:flex;gap:6px}#units button{padding:7px 14px;border-bottom:2px solid transparent;white-space:nowrap}#units button[aria-current="page"]{color:var(--accent);border-color:var(--accent);font-weight:700}.toolbar{padding-top:6px;padding-bottom:8px;border-top:1px solid #edf0ee;gap:16px;min-height:48px}.view-tabs{display:flex;gap:2px}.view-tabs button{padding:5px 12px;border-radius:3px}.view-tabs [aria-selected="true"]{background:var(--ink);color:white}.segmented{display:flex;background:#f0f3f1;padding:2px;border-radius:4px}.segmented button{padding:3px 9px;font-size:12px;border-radius:2px}.segmented [aria-pressed="true"]{background:white;box-shadow:0 1px 3px #0002}.jump-links{display:flex;gap:3px;margin-left:auto}.jump-links button{font-size:12px;color:var(--muted);padding:5px 8px}.jump-number{display:flex;align-items:center;gap:4px;color:var(--muted)}.jump-number input{width:48px;border:0;border-bottom:1px solid var(--line);background:transparent;font-size:12px;text-align:center}.font-controls{display:flex}.reading-progress{height:2px;background:#edf2ef}#progress{display:block;height:2px;background:var(--accent);width:0}
#app{max-width:1520px;margin:auto;padding:0 28px 80px}.unit-heading{display:flex;align-items:center;gap:20px;padding:28px 0 23px;border-bottom:1px solid var(--line)}.unit-heading img{width:68px;height:84px;object-fit:cover;object-position:top;border:1px solid var(--line)}.unit-heading h1{font-family:Georgia,"Times New Roman",serif;font-size:28px;line-height:1.25;font-weight:500;margin:5px 0;max-width:1000px;overflow-wrap:anywhere}.zh-title{margin:4px 0;color:var(--muted);font-size:14px}.eyebrow{color:var(--accent);font-size:11px;font-weight:700}.source-meta{color:var(--muted);font-size:11px}.section-bar{display:flex;align-items:center;gap:12px;justify-content:space-between;margin:0 0 18px}.section-bar h2{margin:0;font-size:18px;font-weight:600}.section-bar small{font-size:11px;font-weight:400;color:var(--muted);margin-left:10px}.scan-link{display:inline-flex;align-items:center;gap:5px;color:var(--muted);font-size:11px}.scan-link svg{width:13px;height:13px}.intro{padding:24px 0;border-bottom:1px solid var(--line)}.intro>summary{font-weight:600;font-size:18px}.intro>summary small{font-weight:400;font-size:11px;color:var(--muted);margin-left:10px}.intro-group{margin:15px 0 0}.intro-group>summary{color:var(--accent);font-weight:600;font-size:13px;padding:6px 0}.intro-block{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:32px;padding:14px 0;border-bottom:1px solid #edf0ee}.intro-block:last-child{border:0}.intro-block .en{font-size:16px;line-height:1.8}.intro-block .zh{font-size:14px;line-height:1.95}.intro-block p{margin:0}.intro-block .scan-link{display:flex;grid-column:1/-1;justify-self:start}.structure-section{padding:26px 0;border-bottom:1px solid var(--line)}.structure-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px 24px}.structure-node{text-align:left;border-left:2px solid #98b7ad;padding:0 10px 2px 15px;min-height:125px}.structure-node .range{display:flex;justify-content:space-between;align-items:center;font:12px Consolas,monospace;color:var(--accent)}.structure-node strong{font-size:14px;line-height:1.5;display:block;margin:9px 0 3px}.structure-node em{font-style:normal;font-size:12px;display:block;color:var(--muted);line-height:1.5}.structure-node p{font-size:12px;color:var(--muted);margin:9px 0 0;line-height:1.7}.overview{display:grid;grid-template-columns:1fr 1fr;gap:32px;padding:25px 0;border-bottom:1px solid var(--line)}.overview h3{font-size:13px;color:var(--accent);font-weight:600;margin:0 0 9px}.overview p{margin:6px 0;font-size:13px;line-height:1.85}.overview .en{color:var(--muted);font-size:14px}.legend{display:flex;align-items:center;gap:18px;flex-wrap:wrap;padding:20px 0 12px}.legend label{display:flex;align-items:center;gap:5px;font-size:12px}.legend input{accent-color:var(--accent)}.swatch{width:12px;height:12px;display:inline-block;border-radius:2px;border:1px solid #0001}.swatch.textbook{background:var(--vocab)}.swatch.word{background:var(--word)}.swatch.phrase{background:var(--phrase)}.swatch.structure{background:var(--syntax)}.reader-labels,.article-row{display:grid;grid-template-columns:minmax(170px,1fr) minmax(0,2.65fr) minmax(180px,1fr);gap:28px}.reader-labels{color:var(--muted);font-size:10px;border-bottom:1px solid var(--line);padding:10px 0}.article-row{align-items:start;padding:26px 0;border-bottom:1px solid #edf0ee;scroll-margin-top:calc(var(--header) + 12px)}.article-row.targeted{background:#f5f9f5;box-shadow:0 0 0 12px #f5f9f5}.article-row .center{min-width:0;grid-column:2;grid-row:1}.article-row .left{grid-column:1;grid-row:1}.article-row .right{grid-column:3;grid-row:1}.para-head{display:flex;align-items:center;gap:8px;margin:0 0 12px;color:var(--muted);font-size:11px;min-height:24px}.para-num{font:700 13px Consolas,monospace;color:var(--accent)}.para-head .scan-link{margin-right:auto}.para-head .icon{width:26px;height:26px}.para-head svg{width:14px;height:14px}.saved{color:var(--accent);background:#e8f1ec}.en{font-family:Georgia,"Times New Roman",serif;overflow-wrap:anywhere}.center>.en{font-size:var(--size);line-height:1.85;margin:0 0 18px;white-space:pre-line}.center>.zh{font-size:calc(var(--size) - 3px);line-height:2;margin:0;padding-top:15px;border-top:1px dashed var(--line);color:#505a59;white-space:pre-line;overflow-wrap:anywhere}.marked{display:inline;padding:1px 0;border-radius:0;font:inherit;line-height:inherit;box-decoration-break:clone;-webkit-box-decoration-break:clone;color:inherit;text-align:inherit}.marked.textbook{background:var(--vocab);border-bottom:1px solid #d7b739}.marked.word{background:var(--word);border-bottom:1px solid #6c9d6b}.marked.phrase{background:var(--phrase);border-bottom:1px solid #78a3c8}.marked.structure{background:var(--syntax);border-bottom:1px solid #b194c2}.marked:hover{filter:brightness(.95)}.annotation{border-left:2px solid var(--line);padding-left:13px;margin:0 0 18px;overflow-wrap:anywhere}.annotation h3,.annotation summary{font-size:12px;font-weight:600;margin:0 0 7px;line-height:1.6}.annotation p{font-size:12px;line-height:1.9;margin:7px 0}.annotation .en{font-size:13px;color:#596465;line-height:1.75;white-space:pre-line}.note-kind{font-size:10px;color:var(--accent);display:block;margin-bottom:5px}.annotation details summary{font-size:11px;color:var(--muted);font-weight:400;cursor:pointer}.annotation.analysis{border-color:#80a69a}.annotation.analysis blockquote{font:italic 13px/1.65 Georgia,serif;margin:8px 0;color:#626965;padding-left:8px;border-left:1px solid #ddd}.annotation.vocab{border-color:#d8bf55}.vocab-item{margin:8px 0}.vocab-item button{font:600 14px Georgia,serif;text-align:left;padding:0;background:var(--vocab)}.vocab-item strong{display:block;font-size:12px;color:#715c0b;margin-top:3px}.vocab-item span{display:block;font-size:11px;color:var(--muted);line-height:1.6;margin-top:3px}.personal-inline{border-left:2px solid #789cbc;padding:8px 12px;background:#f3f7fb;margin-top:16px;font-size:13px;white-space:pre-wrap}.section-divider{text-align:center;color:var(--muted);padding:12px;border-bottom:1px solid var(--line)}.author-preamble{color:var(--accent);font-size:12px;border-bottom:1px solid var(--line);padding:12px 0}.fallacies{padding:22px 0}.fallacy-table{border-collapse:collapse;width:100%;font-size:12px;table-layout:fixed}.fallacy-table th,.fallacy-table td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:12px;overflow-wrap:anywhere}.fallacy-table th{background:var(--soft);color:var(--muted);font-weight:500}.fallacy-table button{color:var(--accent);text-decoration:underline;font-size:11px;padding:3px 0}.fallacy-table strong{display:block}.fallacy-table .en{font-size:14px}.footer{padding:30px 0;font-size:11px;color:var(--muted);border-top:1px solid var(--line)}.footer a{margin-right:16px}
.library-tools{display:flex;gap:14px;align-items:center;padding:20px 0;flex-wrap:wrap}.search-input{min-height:40px;border:1px solid var(--line);padding:8px 12px;border-radius:4px;background:white;min-width:0}.library-tools input{width:320px;max-width:100%}.library-tools select{padding:8px;border:1px solid var(--line);border-radius:4px;background:white}.count{color:var(--muted);font-size:12px}.vocabulary-table{width:100%;border-collapse:collapse;table-layout:fixed}.vocabulary-table th{text-align:left;font-size:11px;font-weight:500;background:var(--soft);color:var(--muted)}.vocabulary-table th,.vocabulary-table td{padding:13px 16px;border-bottom:1px solid var(--line);overflow-wrap:anywhere}.vocabulary-table td:nth-child(1){font:18px Georgia,serif}.vocabulary-table td:nth-child(3){font-weight:600}.vocabulary-table td:last-child{width:60px}.vocabulary-table td button{color:var(--accent)}.vocabulary-table .en{font-size:15px}.vocabulary-table small{display:block;font:10px "Microsoft YaHei",sans-serif;color:var(--muted);margin-top:4px}.scan-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:22px}.scan-item{text-align:left;padding:0}.scan-item img{width:100%;aspect-ratio:1312/1869;object-fit:contain;display:block;border:1px solid var(--line);background:#eee}.scan-item span{font-size:11px;color:var(--muted);display:block;margin-top:7px}dialog{border:1px solid var(--line);border-radius:8px;padding:0;width:min(760px,calc(100vw - 28px));max-height:88vh;box-shadow:0 20px 100px #0003;color:var(--ink)}dialog::backdrop{background:#1b25277a;backdrop-filter:blur(2px)}.dialog-header{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:14px 22px;border-bottom:1px solid var(--line);position:sticky;top:0;background:white;z-index:2}.dialog-header h2{font-size:16px;margin:0;overflow-wrap:anywhere}#modal-body{padding:20px 24px}dialog.dictionary{width:min(460px,calc(100vw - 28px))}.dictionary .en{font-size:19px}.dictionary strong{display:block;font-size:20px;color:#715c0b}.dictionary .kind{font-size:11px;color:var(--muted)}dialog.scan-modal{width:min(1100px,calc(100vw - 20px));max-height:94vh}.scan-modal #modal-body{padding:0}.scan-modal img{display:block;width:100%;height:auto}.scan-controls{display:flex;gap:15px;align-items:center;justify-content:center;padding:12px;background:var(--soft)}.scan-controls select{max-width:70%;padding:6px;border:1px solid var(--line);background:white}.search-results{max-height:60vh;overflow-y:auto}.search-results button,.saved-item{display:block;text-align:left;width:100%;padding:12px 0;border-bottom:1px solid var(--line)}.search-results small{color:var(--accent);font-size:11px}.search-results p{margin:5px 0;font-size:13px}.search-results mark{background:var(--vocab)}#global-search{width:100%;margin-bottom:14px}.empty{padding:40px 0;text-align:center;color:var(--muted)}#personal-text{width:100%;height:240px;border:1px solid var(--line);padding:12px;resize:vertical;border-radius:4px}.dialog-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:16px}.command{display:inline-flex;align-items:center;gap:7px;background:var(--accent);color:white;border-radius:4px;padding:8px 16px}.command:hover{background:#1e6252}.secondary{border:1px solid var(--line);padding:8px 16px;border-radius:4px}.saved-item h3{font-size:14px;margin:0}.saved-item p{font-size:13px;white-space:pre-wrap}.saved-item button{color:var(--accent);font-size:12px;padding:2px 12px 2px 0}.saved-item small{color:var(--muted)}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:9px 18px;box-shadow:0 4px 20px #0002;z-index:30;border-radius:4px;font-size:12px;display:none;max-width:90vw}#to-top{position:fixed;right:15px;bottom:20px;background:white;border:1px solid var(--line);box-shadow:0 2px 6px #0001;z-index:8}.lang-en .zh{display:none!important}.lang-zh .en{display:none!important}.lang-en .intro-block,.lang-zh .intro-block{grid-template-columns:1fr;max-width:900px}.lang-zh .center>.zh{border:0;padding:0;color:var(--ink)}.hide-notes .margin,.hide-notes .reader-labels>span:first-child,.hide-notes .reader-labels>span:last-child{visibility:hidden}.no-textbook .marked.textbook,.no-word .marked.word,.no-phrase .marked.phrase,.no-structure .marked.structure{background:none;border-color:transparent}.no-textbook .annotation.vocab{display:none}
.article-row{scroll-margin-top:14px}.annotation p{font-size:13px}.annotation .en{font-size:14px}.annotation h3{font-size:13px}
@media(max-width:1100px){.topline,.toolbar{padding-left:18px;padding-right:18px;gap:10px}.brand{min-width:170px}#units button{padding:7px 10px}#app{padding-left:18px;padding-right:18px}.article-row,.reader-labels{grid-template-columns:155px minmax(0,1fr) 170px;gap:18px}.structure-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.font-controls{display:none}.scan-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(max-width:820px){.brand{min-width:0;margin-right:auto}.brand small,.brand>svg{display:none}.topline{flex-wrap:wrap;padding:8px 14px;gap:7px}.header-actions{margin-left:0}.header-actions .icon{width:28px;height:28px}#units{width:100%;order:3;justify-content:space-between}#units button{padding:6px 9px;flex:1;font-size:12px}.toolbar{padding:7px 10px;gap:8px}.jump-links,.font-controls{display:none}.jump-number{margin-left:auto}.view-tabs button{padding:5px 9px;font-size:12px}.segmented button{padding:3px 6px}.unit-heading{padding-top:20px;gap:13px}.unit-heading h1{font-size:24px}.unit-heading img{width:48px;height:64px}.article-row{grid-template-columns:1fr 1fr;gap:18px;padding:24px 0}.article-row .center{grid-column:1/-1;grid-row:1}.article-row .left{grid-column:1;grid-row:2}.article-row .right{grid-column:2;grid-row:2}.reader-labels,.margin:empty{display:none}.annotation{margin-bottom:13px}.intro-block,.overview{gap:22px}.structure-grid{gap:18px}.structure-node{min-height:140px;padding-left:11px}.structure-node strong{font-size:13px}.structure-node em,.structure-node p{font-size:11px}.section-bar h2{font-size:16px}.legend{gap:10px}.vocabulary-table th,.vocabulary-table td{padding:12px 8px}.scan-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.hide-notes .margin{display:none}.section-bar small{display:block;margin-left:0}}
@media(max-width:520px){#app{padding:0 16px 55px}.unit-heading h1{font-size:23px}.unit-heading img{display:none}.source-meta{font-size:10px}.intro-block{grid-template-columns:1fr;gap:13px;padding:12px 0}.intro-block .en{font-size:16px}.intro-block .zh{font-size:14px}.intro>summary{font-size:16px}.intro>summary small{font-size:10px}.structure-grid{grid-template-columns:1fr 1fr;gap:20px 12px}.structure-node{min-height:130px}.overview{grid-template-columns:1fr;gap:16px}.article-row{grid-template-columns:1fr;gap:16px}.article-row .center{grid-column:1}.article-row .left{grid-column:1;grid-row:2}.article-row .right{grid-column:1;grid-row:3}.annotation p{font-size:13px}.annotation .en{font-size:14px}.vocab-item{display:inline-block;vertical-align:top;max-width:100%;margin:5px 14px 7px 0}.fallacy-table th,.fallacy-table td{padding:9px 5px}.fallacy-table{font-size:11px}.fallacy-table .en{font-size:12px}.vocabulary-table{table-layout:auto}.vocabulary-table th:nth-child(2),.vocabulary-table td:nth-child(2){display:none}.vocabulary-table td:nth-child(1){width:40%;font-size:16px}.vocabulary-table td:nth-child(3){font-size:12px}.vocabulary-table td:last-child{white-space:nowrap}.scan-grid{grid-template-columns:1fr 1fr;gap:14px}#modal-body{padding:16px}.dialog-header{padding:12px 16px}.legend label{font-size:11px}.jump-number input{width:37px}.jump-number .icon{width:24px}.search-button{width:28px}}
@media(max-width:360px){.toolbar{flex-wrap:wrap}.jump-number{margin-left:0}.search-button{margin-left:auto}.structure-grid{grid-template-columns:1fr}.unit-heading h1{font-size:22px}}
@media print{.app-header,.para-head .icon,.legend,.scan-link,#to-top,dialog,.footer,.library-tools{display:none!important}#app{padding:0;max-width:none}.unit-heading{padding:0 0 12px}.article-row{grid-template-columns:1fr 3fr 1fr;gap:14px;break-inside:auto}.article-row .center{grid-column:2;grid-row:1}.article-row .left{grid-column:1;grid-row:1}.article-row .right{grid-column:3;grid-row:1}.center>.en{font-size:12pt;line-height:1.6}.center>.zh{font-size:10pt;line-height:1.7}.annotation p,.annotation .en{font-size:8pt}.structure-grid{grid-template-columns:repeat(3,1fr)}.marked{-webkit-print-color-adjust:exact;print-color-adjust:exact}summary{list-style:none}}