:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:#172a43;background:#f4f7fb;line-height:1.57;--ink:#172a43;--blue:#143c66;--teal:#0a6c75;--bg:#f4f7fb;--pale:#e7f3f4;--line:#d5e1eb}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0}a{color:#0c587c;text-decoration:none}a:hover{text-decoration:underline}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5} :focus-visible{outline:3px solid #edb859;outline-offset:2px}.shell{max-width:1320px;margin:auto;padding-left:23px;padding-right:23px}
.skip{position:absolute;top:-100px;left:8px;background:#fff;z-index:100;padding:10px}.skip:focus{top:8px}.sitebar{background:#0f2946;color:#fff}.sitebar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:16px;padding-bottom:16px}.brand{font-size:21px;font-weight:850;letter-spacing:.04em;color:#fff!important}.brand small{display:block;color:#b9d6e4;font-size:10px;letter-spacing:.09em}.topnav{display:flex;flex-wrap:wrap;gap:18px}.topnav a{color:#e9f4fb;font-size:13px;font-weight:650}
.hero{color:white;background:radial-gradient(ellipse at 80% 15%,#186a77 0,transparent 54%),linear-gradient(115deg,#102946,#174263);padding:52px 0 43px}.hero h1{margin:14px 0 9px;font-size:clamp(30px,4.5vw,52px);line-height:1.17}.hero-text{max-width:850px;color:#e5f1fa;font-size:17px;margin:0}.pill{display:inline-block;padding:4px 11px;font-size:12px;font-weight:760;color:#19516b;background:#e2f0f2;border-radius:20px}.pill.ondark{color:#defcfb;background:#21677b}.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;max-width:900px;margin:27px 0 19px}.metrics>div{background:#ffffff12;border:1px solid #ffffff35;border-radius:14px;padding:13px 16px}.metrics b{font-size:26px;display:block;line-height:1.2}.metrics span{font-size:12px;color:#daecf3}.hero-actions,.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.button{background:#14647a;border:1px solid #14647a;border-radius:10px;display:inline-block;padding:10px 16px;font-weight:760;font-size:14px;color:white;text-align:center;cursor:pointer}.button:hover{filter:brightness(1.06);text-decoration:none}.button.secondary{background:#e8f2f8;border-color:#d0e4ef;color:#194b68}.button.light{background:white;color:#153956;border-color:#fff}.button.outline-light{color:white;background:transparent;border-color:#bddde6}.button.warn{background:#ac4431;border-color:#ac4431}.button:disabled{opacity:.45}
.source-alert{margin:22px 0;background:#fff9e8;border:1px solid #ecda9d;border-left:4px solid #d0a33d;border-radius:9px;padding:14px 18px;font-size:13px;color:#66512a}.bodygrid{display:grid;grid-template-columns:245px minmax(0,1fr);gap:22px;padding-bottom:55px}.sidebar{background:white;border-radius:14px;padding:18px 13px;border:1px solid #e0e7ef;align-self:start;position:sticky;top:16px}.side-heading{color:#536778;font-size:11px;letter-spacing:.1em;font-weight:850;margin:5px 9px 13px}.sidenav{display:grid;gap:4px}.sidenav a{display:block;color:#294964;font-weight:650;padding:10px 11px;border-radius:8px;font-size:13px}.sidenav a.active,.sidenav a:hover{background:#dff0f1;color:#0a515f;text-decoration:none}.sidebar-divider{border-top:1px solid #e5edf3;margin:16px 0}.tiny,.smalllink{font-size:12px;color:#536a7c}.smalllink{padding:0 8px;display:block}#app h2{margin:4px 0 10px;color:#183c5b;font-size:clamp(24px,3vw,32px)}#app h3{font-size:19px;color:#183c5b;margin:0 0 12px}#app h4{font-size:15px;margin:14px 0 5px;color:#1a5269}.muted{color:#596f80}.sub{margin-top:0;margin-bottom:22px}.panel{background:white;border:1px solid #e0e9f1;border-radius:14px;padding:23px;margin-bottom:17px;box-shadow:0 3px 13px #0e305407}.panel p:last-child{margin-bottom:0}.panel h3{margin-top:0}.panel h2{font-size:23px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.lesson-card{border:1px solid #dce6ef;border-radius:12px;padding:17px;background:white}.lesson-card h3{font-size:17px!important;margin:7px 0!important}.lesson-card p{font-size:13px;color:#556f83}.lesson-card .actions{margin-top:9px}.lesson-index{font-size:12px;font-weight:780;color:#0b6170}.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.tag{display:inline-block;background:#edf3f8;border-radius:7px;padding:3px 7px;font-size:11px;color:#46637a}.learning-head{background:#eaf4f6;padding:12px;border-left:4px solid #398d92;border-radius:8px;margin:17px 0}.section-p{margin:8px 0 15px;line-height:1.8}.objective{color:#4f6980;background:#f6f9fc;padding:12px;border-radius:9px;font-size:13px}.callout{border-left:4px solid #0c7b88;background:#eaf7f7;padding:15px;border-radius:8px;margin:18px 0}.danger{background:#fff4ed;border-left:4px solid #bb623e;padding:14px;border-radius:8px;font-size:13px}.progressbar{height:9px;border-radius:20px;background:#e4eef2;overflow:hidden}.progressbar>span{display:block;height:100%;background:#0d8690}.checkboxline{display:flex;gap:10px;align-items:center;margin-top:16px;padding:12px;background:#f1f7fb;border-radius:9px;cursor:pointer}.checkboxline input{width:19px;height:19px;accent-color:#0d7682}.lesson-navigation{display:flex;gap:10px;justify-content:space-between;flex-wrap:wrap;margin:19px 0}.filterbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:10px 0 20px}.filterbar select,.filterbar input{border:1px solid #c6d5e0;padding:11px;border-radius:9px;min-width:160px;max-width:100%;background:white}.filterbar input{flex:1;min-width:190px}.condition-card{padding:16px;margin:12px 0;border:1px solid #dde7ef;border-radius:10px;background:#fff}.condition-card strong{color:#173e5f}.condition-card dl{display:grid;grid-template-columns:115px 1fr;gap:4px 9px;font-size:13px;margin:10px 0 0}.condition-card dt{font-weight:750;color:#447085}.condition-card dd{margin:0}.source-list{border:1px solid #d3e4e8;border-radius:10px;margin:14px 0;padding:14px;background:#f4fafb}.source-list summary{font-weight:800;cursor:pointer}.source-list p{font-size:13px}.case{border-left:4px solid #4a8895}.case-vignette{background:#eaf2f9;border-radius:10px;padding:17px;color:#294663;font-weight:630}.case details{margin-top:14px;border:1px solid #dde8ef;padding:12px;border-radius:9px}.case summary{font-weight:750;cursor:pointer}.formula{padding:13px 16px;border-radius:9px;background:#edf6f6;margin:9px 0;font-size:15px}.formula code{font-size:14px;color:#184c59}.compare{width:100%;border-collapse:collapse;font-size:13px}.compare th,.compare td{text-align:left;border-bottom:1px solid #dce6ec;padding:11px 10px;vertical-align:top}.compare th{background:#eaf4f6;color:#244b60}.quiz-option{border:1px solid #cbdbe4;border-radius:10px;display:flex;gap:11px;align-items:flex-start;padding:13px;margin:10px 0;cursor:pointer}.quiz-option:hover{background:#f4fafb}.quiz-option:has(input:checked){border-color:#0a7783;background:#e8f7f5}.quiz-option input{margin-top:5px;accent-color:#0b6b75}.quiz-sticky{position:sticky;top:0;z-index:2;background:#f4f7fb;border-bottom:1px solid #cbdde8;padding:8px 0}.quiz-question h3{font-size:20px!important}.quiz-count{font-weight:760;color:#365c75}.result-good{border-left:4px solid #258267}.result-bad{border-left:4px solid #b95749}.reviewcard{margin:13px 0}.reviewcard .answer{padding:11px;background:#ecf7f5;border-radius:8px}.diagram{border:1px solid #d6e5ed;background:#fbfdfe;border-radius:12px;max-width:680px;padding:12px;margin:13px 0}.diagram svg{width:100%;height:auto}.reference-book{border-top:1px solid #e6edf2;padding:11px 0}.reference-book b{display:block}.reference-book small{color:#536b7d}.footer{background:#102a47;color:#dbeaf3;padding:27px 0}.footer p{font-size:12px}.footer a{color:#b3e7f4}
@media(max-width:900px){.bodygrid{display:block}.sidebar{position:static;margin-bottom:16px}.sidenav{display:flex;overflow:auto}.sidenav a{white-space:nowrap}.grid{grid-template-columns:1fr}}
@media(max-width:600px){.shell{padding-left:13px;padding-right:13px}.hero{padding:34px 0}.metrics{grid-template-columns:repeat(2,1fr)}.panel{padding:17px}.condition-card dl{grid-template-columns:1fr}.condition-card dd{padding-bottom:8px}.topnav{gap:10px}}
@media print{.sitebar,.sidebar,.hero-actions,.footer,.button,.source-alert,.skip,.filterbar,.quiz-sticky{display:none!important}.hero{color:black;background:none;padding:5px 0}.bodygrid{display:block}.panel{box-shadow:none;break-inside:avoid}.metrics{color:black}a{color:black}}

/* Anatomy and physiology lesson illustrations */
.course-diagram{margin:22px 0 25px;border:1px solid #cdddea;background:#f6faff;border-radius:14px;padding:12px;overflow:hidden}
.course-diagram img{display:block;width:100%;height:auto;border-radius:9px;background:#eef4fa}
.course-diagram figcaption{color:#42617a;font-size:13px;line-height:1.5;padding:11px 4px 1px}
.course-diagram a{color:#115d8b}