:root{--bg:#f1efe8;--paper:#faf8f3;--ink:#11110f;--muted:#6c6962;--line:#d1cdc2;--soft:#e7e2d7;--max:1280px;--side:280px}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg)}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;-webkit-font-smoothing:antialiased}
body:before{content:"";position:fixed;inset:0;pointer-events:none;z-index:999;opacity:.13;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.84' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.08'/%3E%3C/svg%3E");mix-blend-mode:multiply}
::selection{background:#111;color:#fff}a{color:inherit}button,input{font:inherit}.progress{position:fixed;top:0;left:0;height:2px;background:#111;width:0;z-index:200}
.top{height:66px;position:sticky;top:0;z-index:100;border-bottom:1px solid var(--line);background:rgba(241,239,232,.9);backdrop-filter:blur(14px);display:flex;justify-content:space-between;align-items:center;padding:0 24px}.brand{display:flex;align-items:center;gap:10px;font-size:11px;font-weight:900;letter-spacing:.14em;text-transform:uppercase}.brand i{width:9px;height:9px;border-radius:50%;background:#111}.actions{display:flex;gap:8px}.btn{border:1px solid var(--line);background:transparent;border-radius:999px;padding:9px 13px;font-size:12px;font-weight:800;text-decoration:none;cursor:pointer}.btn:hover{background:#111;color:#fff;border-color:#111}
.shell{max-width:var(--max);margin:auto;padding:0 24px}.hero{padding:72px 0 58px;border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:60px;align-items:end}.eyebrow{font-size:10px;font-weight:900;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}h1{font-size:clamp(50px,7.4vw,96px);line-height:.93;letter-spacing:-.065em;margin:16px 0 22px;max-width:930px}.hero p{max-width:780px;font-size:17px;line-height:1.66;color:#3f3c36;margin:0}.hero-card{border:1px solid #111;background:rgba(255,255,255,.25);padding:22px}.hero-card h3{font-size:19px;margin:0 0 9px}.hero-card p{font-size:13px;line-height:1.55;color:var(--muted)}.stat{display:flex;justify-content:space-between;padding-top:13px;margin-top:13px;border-top:1px solid var(--line);font-size:12px}.stat b{font-size:18px}
.layout{display:grid;grid-template-columns:var(--side) minmax(0,1fr);gap:56px;padding:48px 0 100px}.sidebar{position:sticky;top:92px;height:calc(100vh - 112px);overflow:auto;border-right:1px solid var(--line);padding-right:26px}.side-label{font-size:10px;font-weight:900;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}.nav{display:flex;flex-direction:column}.nav a{text-decoration:none;border-top:1px solid var(--line);padding:10px 0;display:grid;grid-template-columns:30px 1fr;gap:7px;font-size:12px;color:#57544d}.nav a i{font:italic 14px Georgia,serif;color:var(--muted)}.nav a:hover,.nav a.active{color:#111;font-weight:850}.side-note{border-top:1px solid #111;margin-top:24px;padding-top:13px;font-size:11px;line-height:1.5;color:var(--muted)}
main section{padding:8px 0 72px;scroll-margin-top:90px}.sec-meta{display:flex;align-items:center;justify-content:space-between;gap:20px}.sec-no,.page{font-size:10px;font-weight:900;text-transform:uppercase;letter-spacing:.15em;color:var(--muted)}h2{font-size:clamp(34px,4.8vw,60px);line-height:1;letter-spacing:-.047em;margin:10px 0 14px}.lead{font-size:15px;line-height:1.66;color:#48453f;max-width:820px;margin:0 0 27px}
.definition{border-left:4px solid #111;background:rgba(255,255,255,.38);padding:16px 18px;margin:0 0 24px}.definition b{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.1em;margin-bottom:7px}.definition p{margin:0;font-size:14px;line-height:1.62}
.lesson{border-top:1px solid #111}.block{display:grid;grid-template-columns:230px 1fr;gap:30px;padding:21px 0;border-bottom:1px solid var(--line)}.block h3{font-size:15px;line-height:1.32;margin:0}.content p{font-size:14px;line-height:1.68;color:#403d37;margin:0 0 10px}.content p:last-child{margin-bottom:0}.content ul,.content ol{margin:4px 0 0;padding-left:20px}.content li{font-size:14px;line-height:1.65;color:#403d37;margin:4px 0}.content strong{color:#111}
.simple{display:grid;grid-template-columns:155px 1fr;gap:18px;border:1px solid #bfb9ad;background:rgba(255,255,255,.22);padding:15px 17px;margin:20px 0}.simple b{font-size:11px;text-transform:uppercase;letter-spacing:.09em}.simple span{font-size:13px;line-height:1.55}
.table-wrap{border:1px solid #111;overflow:auto;background:rgba(255,255,255,.23)}table{border-collapse:collapse;width:100%;min-width:760px}th,td{padding:14px 15px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:13px;line-height:1.5}th{background:#111;color:#fff;text-transform:uppercase;letter-spacing:.08em;font-size:10px}td:first-child{font-weight:850;width:170px}tr:last-child td{border-bottom:0}
.two{display:grid;grid-template-columns:1fr 1fr;gap:24px}.panel{border-top:1px solid #111;padding-top:16px}.panel h3{font-size:20px;letter-spacing:-.025em;margin:0 0 10px}.panel p,.panel li{font-size:13px;line-height:1.62;color:#45423c}.panel ul{padding-left:18px}
.keys{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.key{border:1px solid var(--line);background:rgba(255,255,255,.23);padding:14px 15px}.key kbd{font-weight:900;font-size:13px}.key strong{display:block;font-size:13px;margin-top:8px}.key p{font-size:12px;line-height:1.45;color:var(--muted);margin:4px 0 0}
.steps{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid #111}.step{padding:21px;border-right:1px solid var(--line);min-height:180px}.step:last-child{border-right:0}.step em{font:italic 19px Georgia,serif;color:var(--muted)}.step h3{font-size:17px;margin:17px 0 8px}.step p{font-size:13px;line-height:1.55;color:#49463f;margin:0}
details{border-bottom:1px solid var(--line)}summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px;padding:14px 0;font-size:13px;font-weight:850}summary::-webkit-details-marker{display:none}summary:after{content:"+";font-size:18px;font-weight:400}details[open] summary:after{content:"–"}details p{font-size:13px;line-height:1.58;color:#47443e;margin:0 0 14px}
.coverage{border:1px solid #111;padding:23px;background:rgba(255,255,255,.26)}.coverage h3{font-size:22px;margin:0 0 13px}.coverage ul{columns:2;column-gap:38px;padding-left:18px}.coverage li{break-inside:avoid;font-size:13px;line-height:1.55;margin:6px 0;color:#413f39}
.search-modal{position:fixed;inset:0;z-index:300;background:rgba(0,0,0,.42);backdrop-filter:blur(8px);display:none;align-items:flex-start;justify-content:center;padding:14vh 18px}.search-modal.open{display:flex}.search-box{width:min(700px,100%);background:var(--paper);border:1px solid #111}.search-box input{width:100%;padding:18px;border:0;border-bottom:1px solid var(--line);background:transparent;outline:0;font-size:17px}.results a{display:block;padding:13px 18px;border-bottom:1px solid var(--line);text-decoration:none}.results a:hover{background:#111;color:#fff}.results strong{display:block;font-size:13px}.results small{color:var(--muted)}
footer{border-top:1px solid var(--line);padding:28px 0 46px;color:var(--muted);font-size:11px}.foot{display:flex;justify-content:space-between;gap:20px}
@media(max-width:980px){.hero-grid{grid-template-columns:1fr}.layout{grid-template-columns:1fr;gap:24px}.sidebar{position:relative;top:auto;height:auto;border-right:0;padding-right:0}.nav{display:grid;grid-template-columns:1fr 1fr}.nav a{padding:10px}.side-note{display:none}.steps{grid-template-columns:1fr 1fr}.step:nth-child(2){border-right:0}.step:nth-child(-n+2){border-bottom:1px solid var(--line)}.keys{grid-template-columns:1fr 1fr}}
@media(max-width:650px){.top{height:60px;padding:0 15px}.brand{font-size:9px}.actions .btn:first-child{display:none}.shell{padding:0 16px}.hero{padding:52px 0 39px}.hero p{font-size:15px}.layout{padding-top:28px}.nav{grid-template-columns:1fr}.block{grid-template-columns:1fr;gap:8px}.simple{grid-template-columns:1fr;gap:7px}.two{grid-template-columns:1fr}.keys{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.step{border-right:0;border-bottom:1px solid var(--line)}.step:last-child{border-bottom:0}.coverage ul{columns:1}.foot{flex-direction:column}.sec-meta{align-items:flex-start;flex-direction:column;gap:4px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* --- Study intelligence layer: preserves the original notes --- */
.top{position:sticky}
.completion-readout{position:absolute;left:50%;transform:translateX(-50%);font-size:11px;font-weight:850;letter-spacing:.02em;white-space:nowrap;color:#25231f;pointer-events:none}
.btn.xray-on{background:#111;color:#fff;border-color:#111}

/* X-RAY mode — alternate diagnostic reading system */
html.xray-root{background:#060706}
body.xray{
  --bg:#070807;--paper:#0d0f0d;--ink:#f2f4ed;--muted:#8c918a;--line:#292d29;--soft:#111511;
  background:#070807;color:#f2f4ed
}
body.xray:before{opacity:.06;mix-blend-mode:screen}
body.xray .top{background:rgba(7,8,7,.94);border-color:#2a2f2a;box-shadow:0 1px 0 rgba(159,255,173,.08)}
body.xray .brand i{background:#9fffad;box-shadow:0 0 14px rgba(159,255,173,.7)}
body.xray .completion-readout{color:#d9ded7}
body.xray .btn{color:#d7dbd5;border-color:#343934}
body.xray .btn:hover,body.xray .btn.xray-on{background:#9fffad;color:#071008;border-color:#9fffad}
body.xray .progress{background:#9fffad;box-shadow:0 0 10px rgba(159,255,173,.55)}
body.xray .hero,body.xray footer{border-color:#292d29}
body.xray .hero p,body.xray .lead,body.xray .content p,body.xray .content li,body.xray .panel p,body.xray .panel li,body.xray details p,body.xray .step p,body.xray td,body.xray .key p{color:#c1c6bf}
body.xray h1,body.xray h2,body.xray h3,body.xray strong,body.xray b,body.xray summary,body.xray kbd{color:#f5f7f1}
body.xray .eyebrow,body.xray .sec-no,body.xray .page,body.xray .side-label{color:#9fffad}
body.xray .hero-card,body.xray .simple,body.xray .definition,body.xray .key,body.xray .coverage,body.xray .table-wrap{background:#0c0f0c;border-color:#343934}
body.xray .sidebar{border-color:#292d29}
body.xray .nav a{color:#8e948d;border-color:#292d29}
body.xray .nav a.active,body.xray .nav a:hover,body.xray .nav-sub a:hover{color:#eff5ee!important}
body.xray .nav-sub{border-color:#343934}
body.xray .nav-sub a{color:#70766f!important}
body.xray .lesson,body.xray .panel,body.xray .block,body.xray details,body.xray .stat{border-color:#292d29}
body.xray th{background:#111611;color:#9fffad;border-color:#343934}
body.xray td{border-color:#292d29}
body.xray .steps{border-color:#343934;background:#0a0c0a}
body.xray .step{border-color:#292d29;position:relative}
body.xray .step:not(:last-child)::after{content:'→';position:absolute;right:-9px;top:50%;transform:translateY(-50%);z-index:4;color:#9fffad;background:#070807;padding:3px;font-size:13px}
body.xray main section{position:relative;transition:opacity .25s ease,filter .25s ease}
body.xray main section:not(.xray-current){opacity:.58}
body.xray main section.xray-current{opacity:1}
body.xray main section.xray-current>.sec-meta{border-left:2px solid #9fffad;padding-left:12px}
body.xray .block,body.xray .definition,body.xray .simple,body.xray .table-wrap,body.xray .keys,body.xray .steps,body.xray .panel,body.xray .coverage{position:relative}
body.xray [data-xray]{outline:1px solid rgba(159,255,173,.18);outline-offset:5px;padding-top:36px!important}
body.xray [data-xray]::before{content:'[' attr(data-xray) ']';position:absolute;z-index:6;top:8px;left:10px;right:auto;background:#070807;padding:2px 7px;font-size:8px;line-height:1.2;font-weight:950;letter-spacing:.16em;text-transform:uppercase;color:#9fffad;border:1px solid rgba(159,255,173,.35);white-space:nowrap}
body.xray .block[data-xray]{border-left:2px solid transparent;padding-left:15px;padding-top:42px!important}
body.xray .block[data-xray='Definition'],body.xray .block[data-xray='System part']{border-left-color:#9fffad}
body.xray .block[data-xray='Procedure'],body.xray .block[data-xray='Process']{border-left-color:#c6f7ff}
body.xray .block[data-xray='Limitation']{border-left-color:#ff9e9e}
body.xray .block[data-xray='Classification']{border-left-color:#f2e2a1}
body.xray .content strong,body.xray details strong,body.xray td strong{color:#eaffed;background:linear-gradient(transparent 65%,rgba(159,255,173,.17) 65%);padding:0 1px}
body.xray .definition{border-left-color:#9fffad}
body.xray #primary .panel:first-child{border-top-color:#9fffad}
body.xray #primary .panel:last-child{border-top-color:#c6f7ff}
body.xray .search-box{background:#0c0f0c;border-color:#4a504a;color:#eef3ed}
body.xray .search-box input{color:#eef3ed;border-color:#292d29}
body.xray .results a{border-color:#292d29}
body.xray .results a:hover{background:#9fffad;color:#071008}
body.xray.xray-scan::after{content:'';position:fixed;left:0;right:0;top:-18vh;height:18vh;z-index:9999;pointer-events:none;background:linear-gradient(to bottom,transparent,rgba(159,255,173,.06),rgba(159,255,173,.24),transparent);animation:xrayScan .78s cubic-bezier(.2,.8,.2,1) forwards}
@keyframes xrayScan{to{transform:translateY(136vh)}}

/* Intelligent expanding contents */
.nav-group{border-top:1px solid transparent}
.nav-sub{display:none;margin:0 0 8px 30px;border-left:1px solid var(--line);padding-left:10px}
.nav-group.open .nav-sub{display:block;animation:navOpen .22s ease both}
.nav-sub a{display:block!important;border-top:0!important;padding:5px 0!important;font-size:10px!important;line-height:1.28;color:var(--muted)!important;font-weight:650!important;grid-template-columns:1fr!important}
.nav-sub a:hover{color:#111!important}
@keyframes navOpen{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

@media(max-width:980px){.completion-readout{position:static;transform:none;margin-left:auto;margin-right:8px}.top{gap:10px}.actions{margin-left:0}.nav-group.open .nav-sub{display:none}}
@media(max-width:650px){.completion-readout{font-size:9px}.brand{display:none}.top{justify-content:space-between}.actions .btn:first-child{display:inline-flex}.actions .btn{padding:8px 10px;font-size:10px}}

/* 100% completion gate */
.finish-cta{position:fixed;z-index:185;left:50%;bottom:20px;transform:translate(-50%,22px);opacity:0;pointer-events:none;transition:opacity .28s ease,transform .28s ease}
.finish-cta.show{opacity:1;transform:translate(-50%,0);pointer-events:auto}
.finish-button{border:1px solid #57ff7a;background:#0d2a15;color:#caffd3;border-radius:999px;padding:13px 20px;font-size:11px;font-weight:950;letter-spacing:.055em;text-transform:uppercase;cursor:pointer;box-shadow:0 0 0 1px rgba(87,255,122,.13),0 0 18px rgba(87,255,122,.28),0 0 46px rgba(87,255,122,.15);animation:finishGlow 1.8s ease-in-out infinite}
.finish-button:hover{background:#57ff7a;color:#071008}
@keyframes finishGlow{50%{box-shadow:0 0 0 1px rgba(87,255,122,.22),0 0 28px rgba(87,255,122,.48),0 0 70px rgba(87,255,122,.22)}}
.truth-modal{position:fixed;inset:0;z-index:500;display:none;place-items:center;padding:20px;background:rgba(0,0,0,.82);backdrop-filter:blur(10px)}
.truth-modal.open{display:grid}
.truth-card{width:min(620px,100%);background:#080908;color:#f5f2ea;border:1px solid #ff5e5e;padding:34px 32px;text-align:center;box-shadow:0 0 0 1px rgba(255,94,94,.12),0 28px 90px rgba(0,0,0,.45);animation:truthHit .45s cubic-bezier(.16,.84,.28,1.28)}
.truth-kicker{font-size:9px;font-weight:950;letter-spacing:.2em;text-transform:uppercase;color:#ff7777;margin-bottom:14px}
.truth-card p{font:700 clamp(22px,4.2vw,42px)/1.12 Georgia,serif;letter-spacing:-.025em;margin:0}
.truth-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:24px}
.truth-card button{margin-top:0;border:1px solid #4a4d48;background:transparent;color:#d7dad4;border-radius:999px;padding:10px 15px;font-size:11px;font-weight:850;cursor:pointer}
.truth-card button:hover{border-color:#fff;color:#fff}
.truth-card .truth-primary{border-color:#ff7474;color:#ffd0d0}
.truth-card.challenge .truth-kicker{color:#9fffad}
.truth-card.challenge{border-color:#9fffad;box-shadow:0 0 0 1px rgba(159,255,173,.12),0 28px 90px rgba(0,0,0,.45)}
@keyframes truthHit{0%{opacity:0;transform:scale(.88) rotate(-1.2deg)}45%{opacity:1;transform:scale(1.035) rotate(.6deg)}70%{transform:scale(.99) rotate(-.2deg)}100%{transform:scale(1) rotate(0)}}
@media(max-width:650px){.finish-cta{left:16px;right:16px;transform:translateY(22px)}.finish-cta.show{transform:none}.finish-button{width:100%;font-size:10px;padding:12px 14px}.truth-card{padding:28px 20px}}



/* Course navigation: only the additions necessary to extend the original single-chapter design. */
:root{--chapter-h:58px}
.top{top:0}.brand i{flex:none}.completion-readout{white-space:nowrap}
.chapter-strip{position:sticky;top:66px;z-index:90;display:flex;gap:0;overflow-x:auto;scrollbar-width:thin;background:rgba(241,239,232,.97);border-bottom:1px solid var(--line);padding:0 max(20px,calc((100vw - 1330px)/2));backdrop-filter:blur(14px)}
.chapter-strip a{display:flex;align-items:center;flex:none;gap:9px;white-space:nowrap;font-size:11px;text-decoration:none;font-weight:780;padding:20px 16px 18px;color:#5a5750;border-bottom:2px solid transparent;transition:color .2s,border-color .2s,background .2s}
.chapter-strip a span{font:italic 15px Georgia,serif;color:#8d887d}.chapter-strip a:hover{background:#e9e4d9;color:#111}.chapter-strip a.current{color:#111;border-bottom-color:#111;font-weight:950}
.hero{padding-top:64px}.unit-note{margin-top:13px;color:#6b655c;font-size:12px;font-weight:700}
.layout{padding-top:42px}.sidebar{top:144px;height:calc(100vh - 164px)}main section{scroll-margin-top:160px}main .block{align-items:start}.block h3{font-size:15px;font-weight:850;line-height:1.38;overflow-wrap:anywhere}
.page a{color:inherit;text-decoration-thickness:1px;text-underline-offset:3px}.source-micro{font-size:11px;color:#6c6962;margin-top:10px}
.study-example{margin-top:12px;padding:12px 16px;border-left:2px solid #b2ab99;background:#e9e5db;font-size:13px;line-height:1.62;color:#3e3b35}
.study-example b{font-size:10px;letter-spacing:.1em;text-transform:uppercase;display:block;margin-bottom:4px}
.concept-focus{font-size:14px!important;font-weight:720;line-height:1.6!important;color:#1c1b19!important}
.block .content>p:not(.source-micro){max-width:64ch}
.study-example{max-width:67ch}
.source-excerpt{font-size:12px;line-height:1.6;margin-top:8px;color:#58534c}
.source-excerpt b{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#80776a}
.lecture-index{padding-top:18px;margin-top:23px;border-top:1px solid var(--line)}.lecture-index summary{cursor:pointer;font-size:13px;font-weight:850;line-height:1.55;list-style-position:inside}.lecture-index summary:hover{text-decoration:underline;text-underline-offset:3px}.lecture-index[open] summary{margin-bottom:12px}.lecture-index>h3{font-size:14px;letter-spacing:-.015em;margin:0 0 6px}
.lecture-index>p{font-size:12px;line-height:1.58;color:var(--muted);margin:0 0 12px}
.lecture-slide{display:grid;grid-template-columns:96px 1fr;gap:20px;padding:14px 0;border-top:1px solid var(--line)}
.lecture-slide>div>a{font-size:11px;font-weight:850;white-space:nowrap;text-underline-offset:3px}.lecture-slide ul{margin:0;padding-left:18px;list-style:disc}.lecture-slide li{font-size:12px;line-height:1.56;margin:0 0 6px;color:#57524a}
.media-figure{margin:23px 0 24px;background:#f9f8f4;border:1px solid var(--line);padding:14px}.media-figure img{width:100%;max-height:550px;object-fit:contain;display:block}.media-figure figcaption{font-size:11px;color:#56514b;margin-top:12px;line-height:1.5}
.quick-outline{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:14px}.quick-outline a{border:1px solid var(--line);padding:11px 12px;text-decoration:none;font-size:12px;display:flex;gap:10px;transition:background .2s,color .2s}.quick-outline a:hover{background:#111;color:#fff}.quick-outline em{font:italic 13px Georgia,serif;color:#888}.quick-outline a:hover em{color:#ddd}
.topic-marker{letter-spacing:.08em;color:#898277;font-size:10px;text-transform:uppercase;font-weight:900;margin:0 0 7px}
.sect-keywords{font-size:12px;color:var(--muted);line-height:1.6;margin:10px 0 20px}.chapter-rule{border:0;border-top:1px solid var(--line);margin:34px 0 12px}
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.chapter-links{margin-bottom:24px}.chapter-links a{font-size:11px;text-decoration:none;display:block;padding:6px 0;line-height:1.35;color:#6f6b64}.chapter-links a.is-active{font-weight:950;color:#111}.chapter-links a:hover{text-decoration:underline}
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.section-count{color:#777269;font-size:12px;margin:9px 0}.definition p{font-size:14px;line-height:1.68}
.checkpoints{margin:20px 0 0;padding:16px 18px;border:1px solid #a9a393;background:#eae7df}.checkpoints b{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.1em}.checkpoints ul{padding-left:20px}.checkpoints li{font-size:13px;margin:6px 0;line-height:1.5}
.coverage-list{columns:2;column-gap:26px;margin:0;padding-left:20px}.coverage-list li{font-size:12px;break-inside:avoid;line-height:1.5;margin-bottom:8px}
.diagram-caption{font-weight:850}
body.xray .chapter-strip{background:#0b0d0b;border-color:#2b302c}
body.xray .chapter-strip a{color:#adafa9}body.xray .chapter-strip a.current{color:#aaffb4;border-color:#aaffb4}body.xray .chapter-strip a:hover{background:#161c16;color:#aaffb4}
body.xray .source-excerpt,body.xray .source-micro,body.xray .lecture-slide li,body.xray .lecture-index>p,body.xray .unit-note,body.xray .chapter-links a,body.xray .nav-sub a,body.xray .sect-keywords{color:#a8aea3}
body.xray .study-example,body.xray .checkpoints{background:#121914;border-color:#3e5842;color:#d6dfd3}body.xray .media-figure{background:#121512;border-color:#323933}
body.xray .concept-focus{color:#e8f8e7!important}
body.xray .quick-outline a:hover{background:#aaffb4;color:#071008}
body.xray .lecture-slide{border-color:#303a30}
body.xray .nav-group.open>a,body.xray .chapter-links a.is-active{color:#aaffb4}
body.xray .course-note,body.xray .source-excerpt b{color:#a8b1a4}
body.xray .search-hint,body.xray .hit-meta{color:#a8afa5}
#finishCta{bottom:18px}
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body.xray .block .content .full-teaching,body.xray .block .content .study-example p{color:#e4ede1}
body.xray .block .content .lesson-kicker{color:#b8c6b4}
.break-link{white-space:nowrap}.break-link span{margin-left:3px}.footer-break-link{font-size:11px;letter-spacing:.06em;text-decoration:none;border-bottom:1px solid currentColor}
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