/* The shared shell is intentionally last: scientific page styles stay intact. */
:root{--lp-blue:#173f57;--lp-gold:#aa8145;--lp-border:#d6e0e5;--lp-soft:#f3f6f7;--lp-sans:'Segoe UI',Arial,sans-serif;scroll-padding-top:145px}
[hidden]{display:none!important}html{scrollbar-gutter:stable}[hidden]{display:none!important}html.lp-dialog-open{overflow:hidden}
body[data-platform] .skip{position:fixed;left:12px;top:-100px;z-index:100;padding:12px;background:white;color:#173f57;font:16px var(--lp-sans)}body[data-platform] .skip:focus{top:8px}
.lp-inline-toc{display:none}.lp-inline-toc nav a{display:block;padding:8px;color:#154f74}
@media(min-width:901px) and (max-width:1279px){.lp-inline-toc{display:block;font:14px/1.5 var(--lp-sans);margin-top:18px}.lp-inline-toc summary{padding:12px;background:var(--lp-soft);cursor:pointer}.lp-page-controls [data-open-outline]{display:none}}
body[data-platform]{margin:0;color:#283039;background:white;padding-bottom:0}
body[data-platform] :is(a,button,input,select):focus-visible{outline:3px solid #a95b16;outline-offset:3px}
body[data-platform] :is(button,input,select){font:inherit}
.lp-header,.lp-page-controls,.lp-mobile,.lp-course-rail,.lp-outline,.lp-filters,.lp-actions,.lp-dialog-head,.lp-quick,.lp-sequence,.lp-type,.lp-footer{font-family:var(--lp-sans)}
.lp-header{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:22px;min-height:64px;padding:0 24px;background:var(--lp-blue);border-bottom:3px solid var(--lp-gold);color:white;font-size:15px}
.lp-header a{display:inline-flex;align-items:center;min-height:44px;color:white;text-decoration:none;padding:0 10px;border-radius:3px}
.lp-header a:hover,.lp-header a[aria-current]{background:#31576d;text-decoration:underline;text-underline-offset:6px}
.lp-header nav{display:flex;gap:4px;margin-left:auto}.lp-header .lp-brand{font-weight:750;font-size:20px;white-space:nowrap}
.lp-page-controls{position:sticky;top:67px;z-index:35;display:flex;gap:10px;align-items:center;min-height:48px;padding:4px 24px;border-bottom:1px solid var(--lp-border);background:#fff;font-size:14px}
body[data-platform] button{min-height:44px;border:1px solid #aebfc9;border-radius:5px;padding:8px 14px;background:white;color:var(--lp-blue);cursor:pointer;font-family:var(--lp-sans);font-size:15px;line-height:1.35}
body[data-platform] button:hover{background:var(--lp-soft)}body[data-platform] button[aria-pressed=true]{background:var(--lp-blue);color:#fff}
.lp-page-controls #lp-navigation-warning{color:#793f16;font-size:13px}.lp-page-controls #lp-navigation-warning:empty{display:none}
.lp-mobile{display:none}.lp-footer{max-width:1100px;margin:30px auto;padding:24px;border-top:1px solid var(--lp-border);font-size:14px}.lp-footer a{color:var(--lp-blue)}
body[data-platform] main#main.lp-hub{max-width:1140px;padding:30px 32px 50px;margin:auto;box-sizing:border-box;font-family:var(--lp-sans);font-size:17px;line-height:1.6}
body[data-platform] main#main.lp-hub :is(h1,h2,h3){font-family:var(--lp-sans);text-wrap:balance}
body[data-platform] main#main.lp-hub h1{font-size:32px;margin:0 0 12px;line-height:1.2}
body[data-platform] main#main.lp-hub h2{font-size:23px;margin:0 0 14px}body[data-platform] main#main.lp-hub h3{font-size:18px}
.lp-hub section{margin:26px 0}
.lp-hub a{color:#154f74}.lp-hub .lp-primary{display:inline-flex;align-items:center;min-height:46px;padding:4px 22px;background:var(--lp-blue);color:white;font-weight:650;border-radius:5px;text-decoration:none}

.lp-muted{color:#52606c;font-size:.9em}
.lp-hub :is(input,select),dialog :is(input,select){min-height:44px;padding:8px 10px;max-width:100%;border:1px solid #9aafb9;border-radius:4px;background:white;color:#283039;font:16px var(--lp-sans);box-sizing:border-box}
.lp-filters{display:flex;gap:14px;flex-wrap:wrap;align-items:end;margin:24px 0}.lp-filters label{display:grid;gap:6px;font-size:14px}.lp-filters label:first-child{flex:1;min-width:min(100%,240px)}.lp-filters p{width:100%;margin:0!important;color:#52606c}
.lp-part{border:1px solid var(--lp-border);border-radius:5px;margin-bottom:12px;background:white}.lp-part>summary{padding:12px 14px;min-height:44px;box-sizing:border-box;cursor:pointer;font-weight:650;line-height:1.45;background:var(--lp-soft)}
body[data-platform] .lp-part section{padding:0 16px;margin:20px 0}.lp-part ol{list-style:none;padding:0!important;margin:0!important}.lp-part li{margin:0!important;border-bottom:1px solid #edf0f2;padding:3px 0}.lp-part li a{display:block;padding:9px 8px;line-height:1.45;text-decoration:none;min-height:44px;box-sizing:border-box}.lp-part li a:hover{text-decoration:underline;background:var(--lp-soft)}.lp-part a[aria-current]{border-left:3px solid var(--lp-gold);background:#e9f0f4;font-weight:650}
.lp-catalog,.lp-parts-list,.lp-reference-list{list-style:none;padding:0!important;max-width:none!important}.lp-catalog>li{padding:20px 0;border-bottom:1px solid var(--lp-border)}.lp-catalog h2{font-size:20px!important;margin:4px 0!important}.lp-type{display:block;font-size:12px;font-weight:650;text-transform:uppercase;letter-spacing:.035em;color:#52606c}.lp-parts-list a,.lp-reference-list a{display:block;min-height:44px;padding:9px 12px;border-bottom:1px solid var(--lp-border);box-sizing:border-box}
.lp-actions{display:flex;flex-wrap:wrap;gap:10px}.lp-legacy{margin:30px 0;color:#52606c}.lp-legacy p{margin:4px 0!important}
.lp-reading-layout{display:grid;grid-template-columns:260px minmax(0,1fr);max-width:1660px;margin:auto;position:relative}
.lp-course-rail{position:sticky;top:123px;align-self:start;grid-column:1;grid-row:1;max-height:calc(100dvh - 130px);overflow-y:auto;overscroll-behavior:contain;padding:14px 10px;font-size:14px;box-sizing:border-box;border-right:1px solid var(--lp-border)}
.lp-course-rail .lp-part{border:0;border-radius:0}.lp-course-rail .lp-part>summary{font-size:14px;padding:10px 8px}.lp-course-rail .lp-part section{padding:0 6px!important}.lp-course-rail h3{font:600 14px/1.45 var(--lp-sans)}.lp-course-rail a{color:#224f6b}
body[data-platform] .lp-reading-layout main#main.book-main{grid-column:2;grid-row:1;width:100%;max-width:920px;padding:30px 36px 50px;box-sizing:border-box}
body[data-platform] main#main h1{font-size:clamp(28px,3vw,40px)}
.lp-outline{display:none}.lp-lesson-intro{margin:18px 0 28px;padding:16px 0;border-block:1px solid var(--lp-border)}.lp-lesson-intro p{font-size:17px;margin:0 0 12px!important}
.lp-quick,.lp-sequence{display:flex;flex-wrap:wrap;gap:6px 12px;font-size:14px;margin:12px 0}.lp-quick a,.lp-sequence a{display:inline-flex;align-items:center;min-height:44px;padding:0 10px;background:var(--lp-soft);border-radius:4px;color:#154f74;text-decoration:none}.lp-quick a:hover,.lp-sequence a:hover{text-decoration:underline}.lp-route-label{width:100%;font-size:12px;color:#52606c}.lp-sequence a:last-child{margin-left:auto}
.lp-file-links{display:flex;flex-direction:column;gap:6px}.lp-file-links a{padding:8px;min-height:44px;box-sizing:border-box}.lp-related{font:14px/1.5 var(--lp-sans);margin-bottom:20px}#lp-context-return:not(:empty){padding:12px 0 20px;font:15px/1.5 var(--lp-sans)}
.lp-files{width:100%;font-size:14px}.lp-files small{display:block;overflow-wrap:anywhere;max-width:65ch;color:#52606c;margin-top:5px}.lp-files td:first-child{min-width:230px}.lp-files a{display:inline-block;padding:5px 0}.lp-files td{vertical-align:top}
.lp-pagination{display:flex;flex-wrap:wrap;gap:4px;margin:24px 0;font:14px var(--lp-sans)}.lp-pagination a{display:flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;border:1px solid var(--lp-border);border-radius:4px}.lp-pagination a[aria-current]{background:var(--lp-blue);color:white}
dialog{width:min(850px,calc(100vw - 32px));max-height:calc(100dvh - 48px);padding:24px;border:1px solid var(--lp-border);border-radius:8px;box-sizing:border-box;color:#283039;background:#fff;font:16px/1.55 var(--lp-sans);overscroll-behavior:contain}dialog::backdrop{background:rgb(15 35 49 / .5)}.lp-dialog-head{display:flex;align-items:center;justify-content:space-between;gap:12px;position:sticky;top:-24px;background:white;padding:8px 0;z-index:1}.lp-dialog-head h2{font:650 23px var(--lp-sans);margin:0}dialog nav{display:flex;flex-direction:column}dialog nav a{padding:12px 6px;min-height:44px;box-sizing:border-box;color:#154f74}
.lp-search-ui label{display:block;margin:12px 0}.lp-search-ui input{width:100%;display:block;margin-top:5px}.lp-search-ui select{margin-left:12px}.lp-search-results{list-style:none;padding:0!important;max-width:none!important}.lp-search-results li{border-top:1px solid var(--lp-border);padding:16px 0}.lp-search-results li>a{display:block;color:#154f74;font-weight:650;font-size:18px;padding:6px 0;min-height:32px}.lp-search-results p{margin:3px 0!important;font:15px/1.5 var(--lp-sans)}
.lp-noscript{padding:20px;background:#fff8e8;font:15px var(--lp-sans)}
.lp-search-results :is(a,p){overflow-wrap:anywhere;word-break:normal}
@media(min-width:1280px){.lp-reading-layout{grid-template-columns:260px minmax(0,1fr) 220px}.lp-outline{display:block;position:sticky;top:125px;grid-column:3;grid-row:1;align-self:start;max-height:calc(100dvh - 140px);overflow:auto;padding:18px 14px;font-size:13px;border-left:1px solid var(--lp-border)}.lp-outline h2{font:650 15px var(--lp-sans)}.lp-outline a{display:block;padding:7px 4px;color:#52606c;text-decoration:none}.lp-outline a[aria-current]{border-left:3px solid var(--lp-gold);color:#173f57;font-weight:650}.lp-outline a:hover{text-decoration:underline}.lp-page-controls [data-open-outline]{display:none}}
@media(max-width:900px){.lp-header{padding:0 12px;gap:8px;min-height:54px}.lp-header nav{display:none}.lp-header>a:last-child{margin-left:auto}.lp-page-controls{top:57px;padding:3px 12px;font-size:13px}.lp-page-controls button{font-size:13px;padding:6px 10px}.lp-course-rail{display:none}.lp-reading-layout{display:block}body[data-platform] .lp-reading-layout main#main.book-main{padding:24px 20px 45px}.lp-mobile{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:45;justify-content:space-around;gap:2px;background:white;border-top:1px solid var(--lp-border);padding:4px 6px calc(4px + env(safe-area-inset-bottom));font-size:13px}.lp-mobile a,.lp-mobile button{display:flex;align-items:center;justify-content:center;min-height:44px;padding:4px 8px;color:#173f57;text-decoration:none;border:0;font-size:13px!important}body[data-platform]{padding-bottom:64px}.lp-footer{margin-bottom:0}.lp-page-controls #lp-navigation-warning{position:absolute;top:100%;left:0;right:0;background:#fff8e8;padding:5px 10px}body[data-platform] main#main.lp-hub{padding:24px 18px 36px;font-size:16px}.lp-hub h1{font-size:28px!important}.lp-search-ui select{display:block;margin:5px 0 0}dialog{padding:18px;max-height:calc(100dvh - 24px);width:calc(100vw - 20px)}.lp-dialog-head{top:-18px}.lp-dialog-head h2{font-size:20px}.lp-filters{gap:10px}.lp-filters label{max-width:100%}.lp-quick{gap:4px}.lp-quick a{padding:0 9px}.lp-page-controls{gap:6px}.lp-sequence a{max-width:48%;overflow-wrap:anywhere;font-size:13px}.lp-lesson-intro p{font-size:16px}}
@media print{.lp-header,.lp-page-controls,.lp-mobile,.lp-course-rail,.lp-outline,dialog,.lp-quick,.lp-actions,.lp-footer{display:none!important}.lp-reading-layout{display:block}body[data-platform]{padding:0}.lp-part{display:block}.lp-part>*{display:block}body[data-platform] main#main{max-width:none!important;padding:0!important}.lp-hub [hidden]{display:revert!important}}

.lp-home-links{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:22px 0;font-family:var(--lp-sans)}.lp-home-links>a{display:inline-flex;align-items:center;min-height:44px;padding:4px 12px}.lp-page-controls:not(:has(button)):has(#lp-navigation-warning:empty){display:none}@media(min-width:1280px){.lp-page-controls:has(#lp-navigation-warning:empty){display:none}.lp-course-rail,.lp-outline{top:74px;max-height:calc(100dvh - 84px)}}