.doc-intro{border:1px solid #dce4d5;background:#eef2e7;border-radius:12px;padding:20px 24px;margin:24px 0}.doc-intro p{font-size:14px;margin:8px 0}.document-toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:24px 0}.document-toolbar input[type=search]{flex:1;min-width:240px}.document-toolbar select{max-width:340px}.document-toolbar label{white-space:nowrap}.document-toc{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:25px}.document-toc summary{font-size:14px}.toc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;padding:0 24px 24px}.toc-grid h3{color:#365d45}.toc-grid a{display:block;font-size:13px;color:#59685a;padding:5px 0}.toc-grid a[aria-current]{font-weight:700;color:#183f37}.reading-chapter{background:#fff;border:1px solid var(--line);border-radius:16px;padding:38px 42px;margin:22px 0 32px;max-width:960px}.reading-label{font-size:12px;color:#6e8567;letter-spacing:1px}.reading-chapter h2{font-family:Georgia,"Songti SC",serif;font-size:27px;line-height:1.5;margin:10px 0}.reading-core{color:#78816f;border-bottom:1px solid var(--line);padding-bottom:23px;margin-bottom:28px}.reading-chapter section{margin:28px 0}.reading-chapter h3{font-size:18px;margin-bottom:15px}.reading-chapter p{font-size:16px;line-height:2.1;margin:12px 0 18px;overflow-wrap:anywhere}.priority-block{border-left:4px solid #618456;padding:20px 24px;background:#f0f5e9;border-radius:0 10px 10px 0}.priority-block h3{color:#365b2c}.priority-block p{margin:14px 0}.priority-block strong{font-weight:650}.priority-number{display:block;font-size:11px;color:#5b7d4d;letter-spacing:1px}.error-block{border-left:4px solid #bc8b4a;padding:18px 24px;background:#faf5e9;border-radius:0 10px 10px 0}.error-block h3{color:#885c2b}.recall-block{border:1px dashed #c7d2c0;padding:18px 22px;border-radius:10px}.reading-chapter .small{font-size:12px;line-height:1.8}.lecture{border:1px solid var(--line);border-radius:10px;margin:12px 0;overflow:hidden}.lecture summary{font-size:14px;padding:15px 18px;line-height:1.6}.lecture-body{padding:0 20px 20px}.lecture-text{white-space:pre-wrap;overflow-wrap:anywhere;font:15px/2 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;margin-top:20px;color:#475347}.reading-actions{display:flex;gap:20px;align-items:center;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:24px}.reading-pager{display:flex;align-items:center;justify-content:space-between;font-size:13px;margin:20px 0;color:#6a7b62}.reading-pager a{color:#2c5d43}.document-note{font-size:12px;color:var(--muted)}.large .reading-chapter p{font-size:1rem}.large .lecture-text{font-size:1rem}
@media(max-width:720px){.reading-chapter{padding:24px 20px;border-radius:12px}.reading-chapter h2{font-size:23px}.reading-chapter p{font-size:16px}.document-toolbar input[type=search],.document-toolbar select{width:100%;max-width:none;min-width:0}.document-toolbar{align-items:stretch}.document-toolbar label{padding:10px 0}.toc-grid{grid-template-columns:1fr;padding:0 18px 20px;gap:18px}.priority-block,.error-block{padding:16px 18px}.doc-intro{padding:18px}.lecture-body{padding:0 15px 18px}.lecture summary{font-size:13px}}
@media print{.document-toolbar,.document-toc,.reading-pager,.reading-actions,.doc-intro,.document-note{display:none!important}.reading-chapter{border:0;border-radius:0;padding:0;margin:0 0 32px;max-width:none;break-before:page}.reading-chapter:first-child{break-before:auto}.priority-block,.error-block{border:1px solid #999;border-left:4px solid #555;background:transparent;break-inside:avoid}.lecture{border:0}.lecture summary:after{display:none}.lecture-text{font-size:11pt;line-height:1.65}.reading-chapter p{font-size:11pt}.reading-chapter h2{font-size:18pt}}

/* Structured lecture content: scope the note box to avoid global sidebar rules. */
.lecture-text{white-space:normal;font:inherit;color:var(--ink)}
.lecture-text .study-topic{margin:28px 0 20px}
.lecture-text .study-topic h4{font-size:19px;color:#294d3d;line-height:1.65;margin:30px 0 16px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.lecture-text .study-topic h5{font-size:17px;line-height:1.7;margin:22px 0 12px}
.lecture-text .study-topic h6{font-size:16px;line-height:1.7;margin:18px 0 10px;color:#5b6c51}
.lecture-text p,.lecture-text li{font-size:16px;line-height:1.95;overflow-wrap:anywhere}
.lecture-text p{margin:12px 0 18px}
.study-list{padding-left:1.4em;margin:12px 0 22px}.study-list li{padding-left:4px;margin:9px 0}
.lecture-text .study-label{margin:22px 0 8px;color:#405d45}
.study-table-wrap{width:100%;overflow-x:auto;margin:20px 0;overscroll-behavior-x:contain}
.study-table{border-collapse:collapse;width:100%;min-width:340px;font-size:14px;line-height:1.9}
.study-table th,.study-table td{border:1px solid var(--line);padding:12px 15px;text-align:left;vertical-align:top}
.study-table thead th{background:#edf2e7;color:#34543b}.study-table tbody th{width:25%;min-width:100px;background:#f7f8f3;font-weight:600}
aside.study-note{position:static;inset:auto;width:auto;display:block;background:#f8f3e6;border:0;border-left:3px solid #ba8a47;border-radius:0 8px 8px 0;padding:14px 18px;margin:18px 0;font-size:14px}
.source-formula{font:14px/1.8 ui-monospace,monospace;white-space:pre-wrap;overflow-wrap:anywhere;background:#f4f5ef;border-radius:6px;padding:10px 14px;margin:8px 0}
@media(max-width:720px){.lecture-body{padding:0 18px 20px}.lecture-text .study-topic h4{font-size:18px}.study-table th,.study-table td{padding:10px}.lecture-text p,.lecture-text li{font-size:16px}aside.study-note{padding:12px 14px;z-index:auto}}
@media print{aside.study-note{display:block!important}.study-topic{break-inside:auto}.study-topic h4,.study-topic h5,.study-topic h6{break-after:avoid}.study-table-wrap{overflow:visible}.study-table{min-width:0;font-size:10pt}.lecture-text p,.lecture-text li{font-size:11pt}.study-table tr{break-inside:avoid}}