*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:#f4f6f7;color:#74838e;font:18px/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}header{background:#203d46;color:white;display:flex;justify-content:space-between;align-items:center;padding:20px 4%;gap:20px}a{color:inherit}header a{text-decoration:none}.brand{font-weight:750;font-size:23px;line-height:1.3}.brand small{display:block;font-size:10px;letter-spacing:2px;margin-top:5px;color:#bdd4d5}header nav{display:flex;gap:24px;font-size:14px}.review{background:#e9f1ec;color:#39584b;padding:10px 4%;font-size:11px;font-weight:750;letter-spacing:1px}.review span{font-weight:400;letter-spacing:0;margin-left:18px;font-size:13px}.layout{display:grid;grid-template-columns:260px minmax(0,1fr);max-width:1560px;margin:30px auto;padding:0 28px;gap:28px}aside{align-self:start;position:sticky;top:25px;padding:20px 5px}aside h2{font-size:23px;color:#394c54;line-height:1.35;margin:12px 0}.course{font-size:14px}.eyebrow{font-size:11px;font-weight:750;letter-spacing:1.7px;color:#66818a}aside nav{display:grid;border-left:2px solid #d5e3e4;margin-top:24px}aside nav a{text-decoration:none;padding:10px 15px;font-size:14px;line-height:1.45}aside nav a:hover,aside nav a:focus{background:#e3edf0;color:#245467}.pilot{font-size:12px;margin-top:30px}.source{font-size:12px}main{min-width:0;background:white;border-radius:8px;padding:28px 38px;box-shadow:0 3px 15px #1b3a4610}h1{color:#3d4e56;font-size:29px;margin:12px 0 30px;line-height:1.3}h3{background:#999b9d;color:white;font-size:25px;font-weight:500;padding:10px 15px;margin:0 -38px 25px;line-height:1.4}h4{font-size:26px;color:#3d4e56;line-height:1.35;margin:34px 0 25px}h5{font-size:22px;color:#3d4e56;margin:28px 0 17px;line-height:1.4}p{margin:0 0 20px}.key-term{color:#ef7438}.table-scroll{overflow-x:auto;margin:28px 0}table{border-collapse:collapse;width:100%;min-width:550px;font-size:16px;line-height:1.5;text-align:center}td,th{border:1px solid #edcb67;padding:12px}th,thead td{background:#fbe3c8}hr{border:0;border-top:1px solid #e7edef;margin:35px 0}.example{border:1.5px solid purple;border-radius:9px;overflow:hidden;box-shadow:0 4px 8px #0002;margin:24px 0 30px}.example-toggle{font:700 18px/1.5 inherit;font-family:inherit;font-size:18px;font-weight:700;background:purple;color:white;border:0;border-radius:0;width:100%;padding:10px 14px;display:flex;justify-content:space-between;text-align:left;gap:15px;cursor:pointer}.example-toggle:after{content:'+';font-size:25px;line-height:1;font-weight:800}.example-toggle[aria-expanded=true]:after{content:'−'}.example-content{padding:16px 14px 0;background:#fff}.toolbar{display:flex;justify-content:space-between;gap:10px;margin-bottom:28px;flex-wrap:wrap}.toolbar div{display:flex;gap:7px;flex-wrap:wrap}button{font:inherit;cursor:pointer}.toolbar button{border:1px solid #cddade;background:#f8fafb;border-radius:5px;padding:7px 10px;color:#49616b;font-size:12px}button:focus-visible,a:focus-visible{outline:3px solid #17a2ba;outline-offset:3px}.chapter-nav{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #dde5e7;margin-top:35px;padding-top:25px;color:#416978;font-size:14px}.chapter-nav a{text-decoration:none}.chapter-nav small{display:block;font-size:11px;color:#7d8c93}footer{font-size:11px;margin-top:30px;color:#839297}.layout.contents-hidden{grid-template-columns:minmax(0,1fr);max-width:1200px}.contents-hidden aside{display:none}[hidden]{display:none!important}@media(max-width:800px){body{font-size:17px}.layout{grid-template-columns:1fr;padding:0 12px;gap:15px;margin-top:15px}aside{position:static;padding:10px 14px}aside nav{grid-template-columns:1fr 1fr;margin-top:10px}.pilot,.source{display:none}main{padding:22px}h3{margin-left:-22px;margin-right:-22px;font-size:22px}h4{font-size:23px}.review span{display:block;margin:3px 0 0}header{padding:17px 20px}header nav{gap:12px;font-size:12px}.brand{font-size:19px}.example-toggle{font-size:17px}table{font-size:14px}}@media print{header,.review,aside,.toolbar,.chapter-nav,footer{display:none}.layout{display:block;padding:0;margin:0}main{box-shadow:none;padding:0}.example-content[hidden]{display:block!important}.example{break-inside:avoid}h3{margin:0}.example-toggle:after{display:none}}
/* Pilot palette and typography; structural dimensions are preserved. */
@font-face{font-family:'Source Sans 3';src:url('fonts/source-sans-3.ttf') format('truetype');font-weight:200 900;font-style:normal;font-display:swap}
@font-face{font-family:'Manrope';src:url('fonts/manrope.ttf') format('truetype');font-weight:200 800;font-style:normal;font-display:swap}
body{background:#F6F5F1;color:#40515C;font-family:'Source Sans 3',sans-serif}
h1,h2,h3,h4,h5,.brand,nav,.eyebrow,.toolbar,.example-toggle{font-family:'Manrope',sans-serif}
header,h3{background:#193344}aside h2,h1,h4,h5{color:#193344}
.brand small{color:#C7DEDE}.review{background:#E8EFF3;color:#40515C}.eyebrow{color:#466771}
aside nav{border-color:#CCDCDD}aside nav a:hover,aside nav a:focus{background:#E8EFF3;color:#166568}
.key-term{color:#087F78}td,th{border-color:#CAD9DF}th,thead td{background:#E8EFF3}
.example{border-color:#166568}.example-toggle{background:#166568}.example-content{background:#F0F7F5}
.toolbar button{background:#F0F7F5;border-color:#C8DAD7;color:#193344}.toolbar button:hover{background:#E0EEEA}
button:focus-visible,a:focus-visible{outline-color:#087F78}.chapter-nav{color:#166568}.chapter-nav small,footer{color:#586D76}
/* Complete-guide components. */
#chapter-select{display:block;width:100%;font:14px 'Source Sans 3',sans-serif;padding:10px;border:1px solid #cad9df;border-radius:5px;background:#fff;color:#193344;margin:8px 0 18px}aside label{font-size:12px}aside nav{max-height:45vh;overflow:auto}aside .source{display:inline-block;margin-top:20px}article .row{display:flex;flex-wrap:wrap;gap:0;align-items:flex-start}article .row>div{min-width:0;flex:1 1 100%}article .row>.col-lg-6{flex-basis:50%;padding:0 10px}article .row>.col-lg-4{flex-basis:33.333%;padding:0 8px}article .row>.col-lg-8{flex-basis:66.667%;padding:0 8px}.img_container{text-align:center;margin:22px auto;width:100%}.diagram{max-width:100%;height:auto;display:block;margin:0 auto;cursor:zoom-in}.img_title{font-size:14px;color:#586d76;margin-top:10px}.table_container{overflow:auto;margin:22px 0}.table_container table{min-width:550px}.note-box{border:1px solid #b9d2d0;border-left:4px solid #166568;border-radius:6px;margin:22px 0;overflow:hidden;background:#f0f7f5}.note-box>.title{background:#e8eff3;font-weight:700;padding:8px 14px;color:#193344}.note-box>.content{padding:14px}.note-box>.content p:last-child{margin-bottom:0}h6{font-family:Manrope,sans-serif;color:#193344;font-size:18px;margin:24px 0 14px}article ul,article ol{padding-left:28px}article li{margin:8px 0}.guide-carousel{border:1px solid #cad9df;border-radius:8px;padding:18px;margin:25px 0;background:#fafcfb}.carousel-indicators{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;padding:12px 0;margin:0;list-style:none}.slide-tab{border:1px solid #166568;border-radius:5px;background:white;padding:7px 16px;color:#166568;font-family:Manrope,sans-serif}.slide-tab[aria-pressed=true]{background:#166568;color:white}.guide-carousel .carousel-item{overflow-x:auto}.guide-carousel table{min-width:500px}mjx-container{max-width:100%;overflow-x:auto;overflow-y:hidden}#image-view{border:0;border-radius:10px;padding:20px;max-width:94vw;max-height:94vh;overflow:auto;background:#fff;color:#40515c}#image-view::backdrop{background:#193344bb}#image-view img{display:block;max-width:100%;max-height:75vh;object-fit:contain;margin:15px auto}#image-view button{border:1px solid #166568;color:#166568;background:#f0f7f5;border-radius:5px;padding:8px 16px}#image-view p{font-size:13px;margin:8px 0}.guide-index{max-width:1100px;margin:35px auto;padding:40px}.guide-index h1{font-size:40px}.guide-index section{margin-top:36px}.guide-index h2{font-size:22px;color:#193344}.chapter-list{display:grid;gap:9px}.chapter-list a{display:flex;justify-content:space-between;gap:15px;text-decoration:none;border:1px solid #cad9df;padding:13px 18px;border-radius:7px;color:#193344;background:#f7faf9}.chapter-list a:hover{background:#e8eff3}.chapter-nav a{max-width:48%}@media(max-width:800px){article .row>.col-lg-6,article .row>.col-lg-4,article .row>.col-lg-8{flex-basis:100%;padding:0}header nav{flex-wrap:wrap}aside nav{max-height:250px}.guide-index{margin:15px 12px;padding:22px}.guide-index h1{font-size:30px}}@media print{.carousel-item[hidden]{display:block!important}.carousel-indicators{display:none}.diagram{max-height:500px}article .row{display:block}}
/* Keep long source equations inside the reading column on small screens. */
article span.nolink{display:inline-block;max-width:100%;overflow-x:auto;vertical-align:middle}