:root{color-scheme:light;--ink:#17324a;--navy:#102d47;--blue:#075c94;--teal:#007b83}
*{box-sizing:border-box}body{margin:0;background:#f2f6fa;color:var(--ink);font:18px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}a{color:var(--blue);text-underline-offset:3px}a:hover{text-decoration-thickness:2px}a:focus-visible{outline:3px solid #cb8600;outline-offset:3px}#wrapper{max-width:1440px;margin:auto}#siteMapNav{padding:1rem 2rem;font-size:.9rem}header,footer{padding:1.2rem 2rem;background:var(--navy);color:#fff}header a,footer a{color:#d5f4ff}header p,footer p{margin:.3rem 0}.course-label{font-size:.9rem;letter-spacing:.03em}header nav,footer nav{display:flex;flex-wrap:wrap;gap:1.4rem;font-size:1rem}.layout{display:grid;grid-template-columns:270px minmax(0,1fr);gap:1.5rem;padding:1.5rem}aside{font-size:.93rem}aside h2{font-size:1.15rem}aside ol,aside ul{padding-left:1.4rem}aside li{margin:.4rem 0}main{min-width:0;background:#fff;padding:2rem;border:1px solid #e1e8ee;border-radius:8px}h1{font-size:2rem;line-height:1.2;margin:.8rem 0 1.3rem}h2{font-size:1.4rem;line-height:1.35;margin-top:2rem}h3{font-size:1.15rem}p{margin:.9rem 0}#lesson{font-weight:650;color:var(--teal)}.objective{border-left:4px solid var(--teal);padding:.65rem 1rem;background:#edf8f8}pre{background:#102d47;color:#f4f9ff;padding:1.2rem;border-radius:6px;overflow:auto;line-height:1.5;font-size:.9rem}code{font-family:Consolas,"Courier New",monospace}p code,li code,td code{font-size:.94em;background:#eef4f8;padding:.1rem .25rem}.table-scroll{overflow:auto}table{border-collapse:collapse;width:100%;font-size:1rem}th,td{border:1px solid #cad8e2;text-align:left;padding:.7rem;vertical-align:top}th{background:#eaf3f8}figure{margin:1.5rem 0}img{max-width:100%;height:auto;display:block}figcaption{font-size:.9rem;color:#415b70;margin-top:.6rem}fieldset{border:1px solid #b9cbd7;border-radius:6px;margin:1.5rem 0;padding:1rem;min-width:0}legend{font-weight:650}label{display:block;padding:.35rem 0}input{margin-right:.5rem}dt{font-weight:700}dd{margin:0 0 .8rem}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:1rem;top:1rem;padding:1rem;background:white;z-index:2}@media(max-width:800px){.layout{display:block;padding:.6rem}main{padding:1.1rem}aside{margin-bottom:1.5rem}#siteMapNav,header,footer{padding:1rem}h1{font-size:1.65rem}pre{font-size:.85rem}}@media print{aside,header nav,footer,.skip-link{display:none}.layout{display:block}main{border:0;padding:0}body{background:white;color:black}pre{white-space:pre-wrap;background:#f0f0f0;color:black}}
