.b19-art, .b19-home { font-size: 16px; font-family: inherit; max-width: 46em; margin: 0 auto; padding: 8px 14px 30px; line-height: 1.65; text-align: left; box-sizing: border-box; }
.b19-art h1, .b19-home h1 { font-size: 1.9em; line-height: 1.22; margin: 0.4em 0 0.5em; }
.b19-art h2, .b19-home h2 { font-size: 1.4em; line-height: 1.3; margin: 1.7em 0 0.5em; }
.b19-art h3 { font-size: 1.15em; margin: 1.4em 0 0.4em; }
.b19-art p, .b19-home p { margin: 0 0 1em; }
.b19-art ul, .b19-art ol { margin: 0 0 1.1em 1.3em; padding: 0; }
.b19-art img, .b19-home img { max-width: 100%; height: auto; }
.b19-fig { margin: 0 0 1.4em; }
.b19-fig img { width: 100%; height: auto; display: block; }
.b19-fig figcaption { font-size: 0.85em; opacity: 0.75; margin-top: 6px; }
.b19-meta { font-size: 0.85em; opacity: 0.75; margin: 0 0 1.2em; }
.b19-trail { font-size: 0.85em; opacity: 0.8; margin: 0 0 0.8em; }
.b19-art table { border-collapse: collapse; width: 100%; margin: 0 0 1.2em; }
.b19-art th, .b19-art td { border: 1px solid rgba(128,128,128,.4); padding: 6px 9px; text-align: left; vertical-align: top; }
.b19-qa details { border-bottom: 1px solid rgba(128,128,128,.35); }
.b19-qa summary { cursor: pointer; padding: 10px 0; font-weight: bold; }
.b19-qa p { margin: 0 0 12px; }
.b19-list .b19-grp { margin-top: 1.6em; }
.b19-list ul { list-style: none; margin: 0; padding: 0; }
.b19-list li { padding: 9px 0; border-bottom: 1px solid rgba(128,128,128,.3); }
.b19-list li a { font-weight: bold; display: block; }
.b19-list li span { display: block; font-size: 0.88em; opacity: 0.8; margin-top: 2px; }
.b19-orig { margin-bottom: 1.4em; }
.b19-nav { display: flex; flex-wrap: wrap; gap: 4px 16px; margin: 0 0 1.3em; padding: 0 0 8px; border-bottom: 1px solid rgba(128,128,128,.4); font-size: 0.85em; }
.b19-nav a { text-decoration: none; }
.wb-logo{font:700 24px/1.2 Georgia,serif;display:block;padding:22px 18px}.ark-header-vertical{float:left;width:240px}.page-wrapper{margin-left:260px}@media(max-width:800px){.ark-header-vertical{float:none;width:auto}.page-wrapper{margin-left:0}}