@import url('/investor-ui.css?v=20261001-7');

/* Diagram labels use separate mobile geometry so text stays readable. */
.concept-diagram{margin:20px 0 12px;padding:12px 0;background:var(--card-2);border-radius:14px;container-type:inline-size}
.concept-diagram-svg{width:100%;height:auto;overflow:visible}
.diagram-compact{display:none}.diagram-label{fill:var(--text);font-weight:600;font-family:'Segoe UI',sans-serif}.diagram-detail{fill:var(--muted);font-family:'Segoe UI',sans-serif}.diagram-icon{color:var(--accent)}
.diagram-node,.diagram-panel{fill:var(--card);stroke:var(--border-2);stroke-width:1.5}.diagram-share,.diagram-dot{fill:var(--accent)}
.diagram-center{fill:var(--card);stroke:var(--accent);stroke-width:2}.diagram-center-label{fill:var(--text);font-weight:600;font-family:'Segoe UI',sans-serif}
.diagram-connector{fill:none;stroke:var(--accent);stroke-width:2.5}.diagram-track{stroke:var(--border-2);stroke-width:4}.diagram-deadline{stroke:var(--accent-2);stroke-width:2}
.diagram-overlap{fill:var(--accent);fill-opacity:.12;stroke:var(--accent);stroke-width:2}.diagram-overlap.second{fill:var(--accent-2);stroke:var(--accent-2)}
.diagram-details{font-size:13px;margin:12px 0}.diagram-details summary{cursor:pointer;color:var(--accent)}.diagram-details dl{margin:12px 0}.diagram-details .concept-step{padding:10px 0;border:0;background:transparent}.diagram-details dt{font-weight:650}.diagram-details dd{margin:4px 0 0;color:var(--muted)}
.path-picker{margin:24px 0}.path-picker details{border:1px solid var(--border);border-radius:10px;background:var(--card);padding:16px 20px}.path-picker summary{display:flex;align-items:center;justify-content:space-between;gap:15px;cursor:pointer;list-style:none}.path-picker summary::-webkit-details-marker{display:none}.path-picker summary b{display:block;font-size:16px}.path-switch-label{color:var(--accent);font-size:12px;white-space:nowrap}.path-picker details[open] summary{padding-bottom:20px;border-bottom:1px solid var(--border);margin-bottom:22px}.path-picker details[open] .path-switch-label span{display:inline-block;transform:rotate(180deg)}
.selected-path-start{display:flex;align-items:center;gap:20px;padding:25px 24px;margin-top:14px;border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:10px;background:var(--card);text-decoration:none}.selected-path-start>span:nth-child(2){min-width:0}.selected-path-start b{display:block;font:24px/1.3 Georgia,serif;margin:6px 0}.selected-path-start small,.selected-path-start>span>span{display:block;color:var(--muted);font-size:12px}.path-lesson-number{font:33px/1 Georgia,serif;color:var(--accent)}.path-start-arrow{margin-left:auto;font-size:24px;color:var(--accent)}
.lesson-video video{width:100%;height:auto;display:block;background:#245b46;border-radius:10px;margin:12px 0}
@container(max-width:520px){.diagram-wide{display:none}.diagram-compact{display:block}}
@media(max-width:620px){.diagram-wide{display:none}.diagram-compact{display:block}.concept-diagram{padding:10px 0}.path-picker details{padding:14px}.selected-path-start{padding:18px 15px;gap:13px}.selected-path-start b{font-size:21px}.path-switch-label{font-size:11px}}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg,#f6f7f4);color:var(--text,#1e3029);font:14px/1.65 system-ui,-apple-system,'Segoe UI',sans-serif}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.65}a{color:inherit;text-underline-offset:3px}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px}button:focus:not(:focus-visible){outline:none}[hidden]{display:none!important}h1,h2,h3,h4,p{margin-top:0}h1,h2,.display{font-family:Georgia,'Times New Roman',serif;font-weight:400;letter-spacing:-.7px;line-height:1.15}h1{font-size:clamp(34px,4.2vw,59px);margin-bottom:22px}h2{font-size:31px;margin-bottom:14px}h3{font-size:17px;line-height:1.4;font-weight:620}h4{font-size:14px;margin-bottom:7px}p{margin-bottom:15px}svg{display:block}small,.small{font-size:12px}.muted{color:var(--muted)}.eyebrow{font-size:10px;letter-spacing:1.65px;text-transform:uppercase;font-weight:700;color:var(--accent)}.pill{display:inline-flex;align-items:center;gap:6px;background:var(--card-2);border:1px solid var(--border);border-radius:30px;padding:3px 10px;font-size:10px;letter-spacing:.3px;white-space:nowrap}.pill.sand{background:#f7efdf;color:#78512a;border-color:#e4d6bd}.pill.rose{background:#f6eae7;color:#8b4a40;border-color:#e9cfc8}.sidebar{width:238px;height:100dvh;position:fixed;inset:0 auto 0 0;z-index:30;background:var(--card);border-right:1px solid var(--border);padding:30px 22px;display:flex;flex-direction:column;overflow-y:auto}.brand{display:flex;gap:10px;align-items:center;text-decoration:none;font:27px/1.1 Georgia,serif;letter-spacing:-.8px}.brand small{display:block;font:8px/1.6 system-ui,sans-serif;letter-spacing:1.5px;margin-top:9px;color:var(--muted)}.platform-link{color:var(--muted);text-decoration:none;font-size:11px;margin:31px 6px 25px}.nav-section{margin:24px 10px 10px;font-size:9px;font-weight:650;letter-spacing:1.3px;color:var(--muted);text-transform:uppercase}.side-link{display:flex;align-items:center;gap:10px;padding:10px;border-radius:6px;text-decoration:none;font-size:12px;min-height:41px;margin:2px 0;color:var(--muted)}.side-link:hover{background:var(--bg-2)}.side-link.active{color:var(--accent);background:var(--card-2);font-weight:650}.side-link .nav-icon{font-size:13px;width:19px;text-align:center;font-variant-numeric:tabular-nums}.side-link .count{margin-left:auto;min-width:17px;border-radius:3px;font-size:10px;text-align:center;background:var(--bg-2);padding:1px 4px}.sidebar-bottom{margin-top:auto;padding:45px 8px 0}.sidebar-bottom p{font:20px/1.5 Georgia,serif;margin:13px 0}.sidebar-bottom small{color:var(--muted);font-size:10px;line-height:1.7;display:block}.main-shell{margin-left:238px;min-width:0}.topbar{height:72px;border-bottom:1px solid var(--border);padding:0 42px;display:flex;justify-content:space-between;align-items:center;gap:15px}.breadcrumb{display:flex;align-items:center;gap:12px;font-size:11px;color:var(--muted)}.breadcrumb a{text-decoration:none}.header-actions{display:flex;align-items:center;gap:17px}.local-label{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:10px}.local-label>span{width:5px;height:5px;border-radius:50%;background:var(--accent)}.icon-button{width:32px;height:32px;border:1px solid var(--border);border-radius:50%;background:var(--card);color:var(--text);font-size:18px}main{max-width:1340px;min-height:65vh;padding:39px 46px 58px;margin:0 auto;outline:none}.hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:52px;align-items:center;padding:16px 0 44px}.hero .eyebrow{margin-bottom:22px;display:flex;align-items:center;gap:9px}.hero .eyebrow:before{content:'';width:24px;height:1px;background:var(--accent)}.hero h1 em{font-style:normal;color:var(--accent)}.hero .intro{max-width:440px;color:var(--muted);font-size:15px;line-height:1.85;margin-bottom:25px}.actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px}.button{display:inline-flex;justify-content:center;align-items:center;gap:15px;min-height:43px;padding:10px 18px;background:var(--accent);color:var(--bg);border:1px solid var(--accent);border-radius:6px;font-size:12px;font-weight:600;text-decoration:none;line-height:1.5}.button:hover{filter:brightness(.92)}.button.secondary{background:var(--card);color:var(--text);border-color:var(--border-2)}.button.quiet{background:transparent;color:var(--accent);border-color:transparent;padding-left:0;padding-right:0}.button.small{font-size:11px;min-height:35px;padding:7px 12px}.hero-note{font-size:10px;color:var(--muted);margin:20px 0 0}.sample-thesis{background:var(--card);border:1px solid var(--border-2);border-radius:10px;padding:25px 28px;position:relative;box-shadow:8px 8px 0 var(--bg-2)}.sample-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px}.sample-thesis h2{font-size:27px;max-width:340px;margin-bottom:22px}.thesis-line{display:grid;grid-template-columns:70px 1fr;gap:12px;margin:12px 0;font-size:11px;line-height:1.8}.thesis-line>span{font-size:9px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.6px;padding-top:2px}.thesis-line p{margin:0}.thesis-line.risk{padding-top:13px;border-top:1px dashed var(--border-2)}.sample-bottom{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--border);padding-top:15px;margin-top:20px;font-size:10px;color:var(--muted)}.sample-bottom a{font-weight:600;color:var(--accent)}.progress-strip{display:flex;gap:25px;align-items:center;padding:20px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin-bottom:34px}.progress-label{display:flex;gap:12px;align-items:center;min-width:180px}.progress-icon{width:32px;height:32px;border:1px solid var(--border-2);border-radius:50%;display:grid;place-items:center;color:var(--accent);font-size:17px}.progress-label b{display:block;font-size:11px;font-weight:600}.progress-label small{color:var(--muted);font-size:10px}.progress-line{height:4px;background:var(--border);flex:1;border-radius:5px;overflow:hidden;min-width:25px}.progress-line span{display:block;height:100%;background:var(--accent)}.progress-strip>.small{color:var(--muted);font-size:10px}.progress-strip a{font-size:11px;white-space:nowrap;color:var(--accent);font-weight:600}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin:31px 0 20px}.section-head h2{font-size:28px;margin:0}.section-head p{color:var(--muted);font-size:11px;margin:6px 0 0}.section-head>a{font-size:11px;color:var(--accent)}.chapter-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}.chapter-card{display:flex;flex-direction:column;text-decoration:none;border:1px solid var(--border);border-radius:8px;background:var(--card);padding:23px 20px;transition:transform .15s,border-color .15s;min-width:0}.chapter-card:hover{transform:translateY(-3px);border-color:var(--accent)}.chapter-card .chapter-num{font:32px Georgia,serif;color:var(--accent);margin-bottom:28px}.chapter-card:nth-child(2) .chapter-num{color:#8d6846}.chapter-card:nth-child(3) .chapter-num{color:#527381}.chapter-card:nth-child(4) .chapter-num{color:#9a6760}.chapter-card h3{font:22px/1.2 Georgia,serif;margin-bottom:12px}.chapter-card p{font-size:11px;color:var(--muted);line-height:1.75;flex:1}.chapter-card .card-foot{border-top:1px solid var(--border);padding-top:15px;display:flex;justify-content:space-between;gap:8px;color:var(--muted);font-size:10px}.lower-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:23px;margin-top:28px}.practice-promo{background:var(--iv-hero);border-radius:8px;padding:28px;display:grid;grid-template-columns:1fr 70px;gap:12px}.practice-promo h3{font:25px/1.2 Georgia,serif;margin:10px 0}.practice-promo p{font-size:12px;color:var(--muted);max-width:370px}.practice-promo .practice-art{align-self:center;font:60px Georgia,serif;color:var(--accent);opacity:.6;transform:rotate(-10deg)}.evidence-note{padding:26px 28px;border:1px solid var(--border);border-radius:8px;background:var(--card)}.evidence-note h3{font:22px/1.2 Georgia,serif;margin:10px 0}.evidence-note p{font-size:12px;color:var(--muted)}.evidence-note a{font-size:11px;color:var(--accent);font-weight:600}.page-head{max-width:800px;margin:8px 0 30px}.page-head h1{font-size:43px;margin:15px 0}.page-head .intro{font-size:15px;color:var(--muted);max-width:720px}.path-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:32px}.lesson-list{display:flex;flex-direction:column;border-top:1px solid var(--border)}.lesson-row{display:flex;align-items:center;gap:19px;text-decoration:none;padding:22px 2px;border-bottom:1px solid var(--border)}.lesson-row:hover h3{color:var(--accent)}.lesson-index{font:22px Georgia,serif;color:var(--muted);width:28px;flex-shrink:0}.lesson-row h3{margin:0 0 5px;font-size:15px}.lesson-row p{color:var(--muted);font-size:11px;margin:0}.lesson-row .lesson-meta{font-size:10px;color:var(--muted);margin-left:auto;white-space:nowrap;text-align:right}.lesson-meta span{display:block;color:var(--accent)}.side-panel{background:var(--card);border:1px solid var(--border);padding:23px;border-radius:8px;align-self:start}.side-panel h3{font:23px/1.2 Georgia,serif;margin:10px 0 13px}.side-panel p{font-size:12px;color:var(--muted)}.side-panel ol{font-size:11px;padding-left:18px;color:var(--muted)}.side-panel li{margin:10px 0}.lesson-layout{display:grid;grid-template-columns:minmax(0,760px) 230px;gap:42px;max-width:1060px}.reading{font-size:15px;line-height:1.95}.reading p{margin-bottom:23px}.lesson-goal{font-size:13px;color:var(--accent);border-left:2px solid var(--accent);padding:9px 17px;margin:23px 0 30px}.example-box{padding:24px 26px;border:1px solid var(--border-2);background:var(--card);border-radius:8px;margin:25px 0;font-size:13px;line-height:1.85}.example-box h3{font:23px/1.25 Georgia,serif;margin:10px 0 13px}.takeaway{background:var(--iv-hero);padding:20px 24px;border-radius:7px;margin:25px 0}.takeaway p{margin:7px 0 0;font-size:13px;line-height:1.85}.lesson-aside{align-self:start;position:sticky;top:30px;font-size:11px}.lesson-aside h3{font-size:12px}.lesson-aside a{display:block;padding:10px 0;color:var(--muted);text-decoration:none;border-bottom:1px solid var(--border)}.lesson-aside a.current{color:var(--accent);font-weight:650}.source-links{font-size:11px;padding:18px 0;margin-top:26px;color:var(--muted);border-top:1px solid var(--border)}.source-links a{color:var(--accent);display:inline-block;margin:4px 12px 4px 0}.quiz{border:1px solid var(--border-2);border-radius:9px;padding:27px;background:var(--card);margin:23px 0}.quiz-top{display:flex;justify-content:space-between;gap:12px;margin-bottom:15px}.quiz h3{font:22px/1.4 Georgia,serif;letter-spacing:-.2px;margin:9px 0 19px}.quiz-option{display:flex;gap:12px;align-items:center;border:1px solid var(--border);background:var(--bg);padding:13px 15px;border-radius:6px;margin:9px 0;font-size:12px;cursor:pointer;line-height:1.65}.quiz-option:hover{border-color:var(--accent)}.quiz-option:has(input:checked){border-color:var(--accent);background:var(--iv-hero)}.quiz-option input{accent-color:var(--accent);flex-shrink:0}.quiz-option input:disabled{cursor:default}.quiz-controls{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-top:20px;flex-wrap:wrap}.confidence{font-size:10px;color:var(--muted);display:flex;align-items:center;gap:8px}.confidence select{padding:5px;border:1px solid var(--border);border-radius:4px;background:var(--card);color:var(--text);font-size:11px}.feedback{margin-top:20px;padding:18px 20px;border-radius:6px;background:var(--iv-hero);font-size:12px;line-height:1.9}.feedback.wrong{background:#f9efdf;color:#684a26}.feedback strong{display:block;margin-bottom:6px}.feedback p:last-child{margin-bottom:0}.quiz-help{font-size:11px;color:var(--muted);margin:12px 0 0}.lesson-end{border-top:1px solid var(--border);padding-top:25px;margin-top:27px;display:flex;justify-content:space-between;gap:16px}.studio-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.8fr);gap:31px}.studio-form{background:var(--card);border:1px solid var(--border);border-radius:9px;padding:28px}.studio-toolbar{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 26px;align-items:center}.studio-toolbar select{background:var(--card);color:var(--text);border:1px solid var(--border-2);padding:10px 13px;border-radius:6px;min-height:42px;max-width:100%;font-size:12px}.field{margin-bottom:21px}.field label{display:block;font-weight:620;font-size:12px;margin-bottom:5px}.field .hint{display:block;color:var(--muted);font-size:10px;line-height:1.6;margin:6px 0}.field input,.field textarea{display:block;width:100%;padding:11px 12px;background:var(--bg);border:1px solid var(--border-2);border-radius:5px;color:var(--text);font-size:12px;line-height:1.65}.field textarea{min-height:83px;resize:vertical}.field input[type=date]{color-scheme:light}.field-group{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field-group .field{min-width:0}.form-section{font:23px Georgia,serif;border-top:1px solid var(--border);padding-top:24px;margin:27px 0 21px}.form-section:first-child{border-top:0;margin-top:0;padding-top:0}.preview-col{position:sticky;top:25px;align-self:start}.thesis-preview{border:1px solid var(--border-2);background:var(--card);padding:27px;border-radius:9px}.thesis-preview h2{font-size:29px;overflow-wrap:anywhere;margin:16px 0 22px}.preview-item{font-size:12px;line-height:1.8;margin:15px 0;overflow-wrap:anywhere}.preview-item small{display:block;color:var(--accent);font-size:9px;text-transform:uppercase;letter-spacing:.75px;font-weight:700;margin-bottom:4px}.preview-empty{color:var(--faint);font-style:italic}.preview-meta{font-size:10px;color:var(--muted);overflow-wrap:anywhere;border-top:1px solid var(--border);margin-top:22px;padding-top:17px}.word-status{font-size:11px;color:var(--muted);display:flex;justify-content:space-between;align-items:center;gap:12px}.word-status.over{color:var(--warn)}.checks{display:flex;flex-wrap:wrap;gap:6px;margin-top:15px}.check{font-size:9px;color:var(--muted);background:var(--bg-2);padding:4px 7px;border-radius:4px}.check.done{color:var(--accent);background:var(--iv-hero)}.preview-notice{font-size:10px;color:var(--muted);margin:13px 0 22px}.studio-review{background:var(--iv-hero);border-radius:8px;padding:23px;margin-top:21px}.studio-review h3{font:23px Georgia,serif}.studio-review ol{padding-left:17px;font-size:11px;color:var(--muted)}.studio-review li{margin:10px 0}.revision-note{font-size:12px;width:100%;resize:vertical;min-height:65px;background:var(--bg);border:1px solid var(--border-2);border-radius:5px;padding:10px;color:var(--text);margin:8px 0 14px}.save-state{font-size:10px;color:var(--muted);margin-top:15px}.draft-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.draft-card{border:1px solid var(--border);padding:25px;background:var(--card);border-radius:8px}.draft-card h2{font-size:26px;margin:12px 0}.draft-card p{font-size:12px;color:var(--muted);overflow-wrap:anywhere}.draft-meta{display:flex;justify-content:space-between;gap:12px;font-size:10px;color:var(--muted);border-top:1px solid var(--border);padding-top:15px;margin-top:17px}.draft-card details{font-size:11px;color:var(--muted);margin:17px 0}.draft-card summary{cursor:pointer;color:var(--accent)}.revision{padding:12px 0;border-bottom:1px solid var(--border)}.revision p{margin:5px 0}.revision pre{font:11px/1.7 system-ui;white-space:pre-wrap;max-height:240px;overflow:auto;padding:12px;background:var(--bg-2)}.empty-state{border:1px dashed var(--border-2);border-radius:9px;padding:50px 30px;text-align:center;background:var(--card)}.empty-state h2{font-size:31px}.empty-state p{font-size:13px;color:var(--muted)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-bottom:28px}.stat{border:1px solid var(--border);border-radius:7px;padding:20px;background:var(--card)}.stat strong{display:block;font:32px Georgia,serif}.stat span{color:var(--muted);font-size:11px}.practice-controls{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0}.practice-controls select{max-width:100%;padding:9px 13px;border:1px solid var(--border-2);border-radius:5px;background:var(--card);color:var(--text);font-size:12px}.practice-area{max-width:760px}.practice-end{padding:30px;background:var(--iv-hero);border-radius:8px}.source-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px}.source-card{border:1px solid var(--border);border-radius:7px;background:var(--card);padding:21px}.source-card h3{font-size:14px;margin:10px 0}.source-card p{font-size:11px;color:var(--muted);margin:8px 0}.source-card a{color:var(--accent);font-size:11px}.research-intro{max-width:790px;font-size:14px;line-height:1.9;color:var(--muted)}.research-principles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:28px 0 35px}.research-principles>div{border-left:2px solid var(--border-2);padding:4px 20px}.research-principles h3{font:23px Georgia,serif}.research-principles p{font-size:12px;color:var(--muted)}.calculator{margin-top:33px;padding:28px;background:var(--iv-hero);border:1px solid var(--border);border-radius:9px}.calculator h3{font:25px Georgia,serif;margin:9px 0}.calculator>p{font-size:12px;color:var(--muted)}.calc-fields{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:13px;margin:20px 0}.calc-fields label{display:block;font-size:10px;color:var(--muted)}.calc-fields input{width:100%;padding:9px 10px;margin-top:7px;border:1px solid var(--border-2);background:var(--card);border-radius:5px;color:var(--text);font-size:13px}.calc-results{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:23px 0 15px}.calc-results strong{display:block;font:27px Georgia,serif;line-height:1.4}.calc-results span{font-size:10px;color:var(--muted)}.calc-note{font-size:10px;color:var(--muted);margin-bottom:0}.calc-bar{display:flex;height:13px;border-radius:3px;overflow:hidden;background:var(--border);margin:14px 0}.calc-bar span{background:var(--accent);min-width:1px}.styles-tags{display:flex;flex-wrap:wrap;gap:7px;margin:10px 0 22px}.styles-tags button{border:1px solid var(--border-2);border-radius:20px;padding:6px 12px;font-size:10px;color:var(--muted);background:var(--card)}.styles-tags button[aria-pressed=true]{color:var(--bg);background:var(--accent);border-color:var(--accent)}footer{padding:28px 46px 32px;border-top:1px solid var(--border);display:flex;align-items:start;justify-content:space-between;gap:30px;max-width:1340px;margin:auto;color:var(--muted)}.footer-brand{font:20px Georgia,serif;text-decoration:none;color:var(--text)}footer p{max-width:450px;font-size:10px;margin:10px 0}footer nav{display:flex;flex-wrap:wrap;gap:17px;font-size:10px;padding-top:7px}.skip-link{position:fixed;top:-60px;left:20px;z-index:100;background:var(--accent);color:var(--bg);padding:10px}.skip-link:focus{top:10px}#toast{position:fixed;bottom:25px;left:calc(50% + 100px);transform:translateX(-50%);z-index:99;padding:12px 20px;background:var(--text);color:var(--bg);border-radius:6px;box-shadow:0 4px 20px #0002;font-size:12px;max-width:80vw;opacity:0;pointer-events:none;transition:opacity .2s}#toast.visible{opacity:1}#storage-warning{position:fixed;bottom:0;left:238px;right:0;background:#f7e5c8;color:#633f1c;font-size:12px;padding:15px 25px;z-index:100}.no-js{position:fixed;inset:100px 30px auto 260px;padding:40px;background:var(--card);border:1px solid var(--border);z-index:10}.error-text{font-size:12px;color:var(--warn)}.loading{padding:60px 0} .reading a{color:var(--accent)}
@media(min-width:1500px){.hero{gap:75px;padding-top:29px;padding-bottom:50px}.hero h1{font-size:62px}.sample-thesis{padding:32px}.chapter-card{padding:26px 24px}}
@media(max-width:1200px){.sidebar{width:210px;padding:27px 17px}.main-shell{margin-left:210px}main{padding:30px}.topbar{padding:0 30px}.hero{gap:28px}.chapter-grid{grid-template-columns:repeat(2,1fr)}.chapter-card .chapter-num{margin-bottom:18px}.chapter-card{min-height:230px}.studio-layout{grid-template-columns:minmax(0,1fr) minmax(280px,.85fr);gap:20px}.path-layout{grid-template-columns:minmax(0,1fr) 245px}.lesson-layout{grid-template-columns:minmax(0,1fr) 190px;gap:26px}.progress-strip{gap:16px}.progress-strip>.small{display:none}#storage-warning{left:210px}}
@media(max-width:950px){.hero{grid-template-columns:1fr;gap:35px}.hero h1{font-size:51px}.hero .intro{max-width:600px}.sample-thesis h2{max-width:100%;font-size:27px}.sample-thesis{max-width:630px}.path-layout{grid-template-columns:1fr}.side-panel{display:none}.studio-layout{grid-template-columns:1fr}.preview-col{position:static}.lesson-layout{grid-template-columns:1fr}.lesson-aside{display:none}.lower-grid{grid-template-columns:1fr}.research-principles{grid-template-columns:1fr;gap:24px}.calc-fields{grid-template-columns:repeat(3,1fr)}footer{padding:28px 30px;flex-direction:column;gap:15px}.studio-form{padding:23px}.local-label{display:none}.source-grid{grid-template-columns:1fr}}
@media(max-width:700px){.sidebar{position:static;width:100%;height:auto;padding:18px 20px 0;border-right:0;border-bottom:1px solid var(--border);overflow:visible}.brand{font-size:25px}.brand small{font-size:7px;margin-top:5px}.brand img{width:30px;height:30px}.platform-link{position:absolute;right:20px;top:29px;font-size:10px;margin:0}.sidebar-bottom{display:none}#academy-nav{display:flex;overflow-x:auto;gap:6px;padding:16px 0 9px;scrollbar-width:thin}.side-link{white-space:nowrap;flex-shrink:0;min-height:36px;padding:7px 9px;font-size:11px}.side-link .nav-icon{display:none}.side-link .count{font-size:9px}.nav-section{display:none}.main-shell{margin:0}.topbar{height:49px;padding:0 20px}.breadcrumb{font-size:10px;gap:8px}.icon-button{width:28px;height:28px;font-size:15px}main{padding:27px 20px 40px}.hero{padding:5px 0 31px;gap:28px}.hero h1{font-size:45px;letter-spacing:-1px;margin-bottom:18px}.hero .intro{font-size:13px;line-height:1.8}.hero .eyebrow{font-size:9px;margin-bottom:20px}.hero-note{font-size:9px}.sample-thesis{padding:21px;box-shadow:5px 5px 0 var(--bg-2)}.sample-thesis h2{font-size:25px;margin-bottom:16px}.sample-head{margin-bottom:17px}.sample-head .eyebrow{font-size:8px}.sample-head .pill{font-size:8px;padding:2px 7px}.thesis-line{grid-template-columns:58px 1fr;gap:7px;font-size:10px;margin:10px 0}.thesis-line>span{font-size:8px}.sample-bottom{font-size:9px}.progress-strip{gap:14px;padding:17px 0;margin-bottom:25px;flex-wrap:wrap}.progress-label{min-width:165px}.progress-strip .progress-line{max-width:100px;min-width:50px}.progress-strip>a{margin-left:auto;font-size:10px}.section-head{margin-top:27px;gap:15px}.section-head h2{font-size:26px}.section-head p{font-size:10px}.section-head>a{font-size:10px;white-space:nowrap}.chapter-grid{gap:11px}.chapter-card{padding:18px 15px;min-height:248px}.chapter-card h3{font-size:21px}.chapter-card p{font-size:10px;line-height:1.8}.chapter-card .chapter-num{font-size:28px;margin-bottom:19px}.chapter-card .card-foot{font-size:9px;gap:4px}.practice-promo,.evidence-note{padding:23px}.practice-promo h3{font-size:23px}.page-head h1{font-size:37px}.page-head .intro{font-size:13px}.lesson-row{gap:13px;padding:20px 0}.lesson-row h3{font-size:13px}.lesson-row p{font-size:10px}.lesson-meta{font-size:9px!important}.lesson-row .lesson-index{font-size:21px;width:22px}.reading{font-size:14px}.quiz{padding:21px 18px}.quiz h3{font-size:21px}.quiz-option{padding:12px;font-size:11px}.lesson-end{flex-wrap:wrap}.studio-form{padding:20px}.field-group{grid-template-columns:1fr;gap:0}.thesis-preview{padding:22px}.draft-grid{grid-template-columns:1fr}.stats{gap:9px}.stat{padding:15px 13px}.stat strong{font-size:27px}.stat span{font-size:9px}.calc-fields{grid-template-columns:repeat(2,1fr);gap:11px}.calculator{padding:21px}.calc-results{gap:12px}.calc-results strong{font-size:22px}.calc-results span{font-size:9px}footer{padding:24px 20px}#toast{left:50%;bottom:20px;width:max-content;max-width:90vw}#storage-warning{left:0}.no-js{inset:180px 20px auto}.source-card{padding:20px}.draft-meta{flex-wrap:wrap}.preview-col .actions{gap:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media print{.sidebar,.topbar,footer,.studio-form,.studio-toolbar,.page-head,#toast,.studio-review,.preview-notice,.checks,.actions,.word-status{display:none!important}.main-shell{margin:0}main{padding:0}.studio-layout{display:block}.preview-col{position:static}.thesis-preview{border:0;box-shadow:none;color:#111}.preview-item{break-inside:avoid}}

/* Learning paths: a compact curriculum with explicit progress and a selected track. */
.learning-header{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:50px;align-items:center;padding:12px 0 32px}.learning-header h1{font-size:46px;margin:14px 0 18px}.learning-header .intro{font-size:15px;max-width:580px;color:var(--muted);line-height:1.85}.learning-facts{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:11px;color:var(--muted)}.learning-facts span+span:before{content:'·';margin-right:18px}.resume-card{padding:24px;background:var(--iv-hero);border:1px solid var(--border);border-radius:9px}.resume-card h2{font-size:24px;margin:10px 0}.resume-card p{font-size:11px;color:var(--muted)}.resume-card .button{width:100%}.learning-tracks{gap:12px}.learning-tracks .chapter-card{min-height:178px;padding:18px;transition:border-color .15s}.learning-tracks .chapter-card:hover{transform:none}.learning-tracks .chapter-card.selected{border-color:var(--accent);box-shadow:inset 0 3px 0 var(--accent);background:var(--iv-hero)}.learning-tracks .chapter-num{display:flex;align-items:center;justify-content:space-between;font:21px Georgia,serif;margin-bottom:16px}.learning-tracks .chapter-num>span{font:10px system-ui,sans-serif;color:var(--muted)}.learning-tracks .chapter-card h3{font-size:20px;margin-bottom:7px}.learning-tracks .chapter-card p{margin-bottom:14px}.learning-tracks .card-foot{border:0;padding-top:8px}.track-meter{height:3px;background:var(--border);overflow:hidden;border-radius:4px}.track-meter span{display:block;height:100%;background:var(--accent)}.curriculum-panel{margin-top:27px;border:1px solid var(--border);background:var(--card);border-radius:9px;padding:25px 28px}.lesson-search{display:grid;grid-template-columns:auto minmax(0,1fr) 160px;gap:14px;align-items:center;border-bottom:1px solid var(--border);padding-bottom:22px;margin-bottom:23px}.lesson-search label{font-size:12px;font-weight:650}.lesson-search input,.lesson-search select{width:100%;min-width:0;border:1px solid var(--border-2);background:var(--bg);color:var(--text);border-radius:5px;padding:10px 12px;font-size:12px}.track-heading{display:flex;align-items:start;justify-content:space-between;gap:20px;margin:0 0 23px}.track-heading h2{margin:8px 0 10px;font-size:29px}.track-heading p{font-size:12px;color:var(--muted);margin:0;max-width:650px}.track-footer{display:flex;justify-content:space-between;gap:15px;margin-top:22px;font-size:11px;color:var(--accent)}.row-arrow{color:var(--muted)}.is-complete{color:var(--accent)}.search-count{color:var(--muted);font-size:12px}.track-summary{display:flex;gap:12px 25px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin:-10px 0 30px}.track-aside-note{margin:20px 0 0!important;font-size:11px!important}.back-track{font-size:11px;color:var(--muted);text-decoration:none}.lesson-jumps{display:flex;flex-wrap:wrap;gap:10px 22px;border-block:1px solid var(--border);padding:13px 0;margin:0 0 28px}.lesson-jumps a{font-size:11px;color:var(--muted);text-decoration:none}.lesson-jumps a:hover{color:var(--accent)}.lesson-goal p{margin:8px 0 0}.key-terms{margin:32px 0}.key-terms h2{font-size:25px}.key-terms dl{margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.key-terms dl>div{border-top:1px solid var(--border);padding-top:12px}.key-terms dt{font-weight:650;font-size:12px;margin-bottom:5px}.key-terms dd{margin:0;font-size:12px;color:var(--muted)}.completion-box{display:flex;justify-content:space-between;align-items:center;gap:25px;background:var(--iv-hero);border:1px solid var(--border);border-radius:8px;padding:22px;margin-top:28px}.completion-box h3{font:24px Georgia,serif;margin:0 0 9px}.completion-box p{font-size:11px;color:var(--muted);margin:0;max-width:420px}.completion-box .button{white-space:nowrap}.aside-help{margin-top:20px;color:var(--muted)}.optional-tools{margin-top:17px;padding-top:12px;border-top:1px solid var(--border);font-size:11px;color:var(--muted)}.optional-tools summary{cursor:pointer;padding:7px}.writing-prompt{font-size:12px;margin-top:20px}.writing-prompt summary{cursor:pointer}.writing-prompt p{margin-top:15px}.lesson-video video{display:block;width:100%;max-height:450px;background:#111;border-radius:8px}.lesson-video h2{font-size:26px}.lesson-video{margin:25px 0}.sidebar-bottom{padding-top:25px}.sidebar-bottom p{font-size:18px}.sidebar .side-link{font-size:11px;padding:8px;min-height:36px}.sidebar .nav-section{margin-top:20px}#lesson-overview,#lesson-example,#lesson-terms,#lesson-quiz,#lesson-apply{scroll-margin-top:25px}
@media(max-width:1150px){.learning-header{grid-template-columns:minmax(0,1fr) 270px;gap:25px}.learning-header h1{font-size:39px}.learning-tracks{grid-template-columns:repeat(4,minmax(0,1fr))}.learning-tracks .chapter-card{padding:14px}.learning-tracks .chapter-card h3{font-size:18px}.learning-tracks .chapter-num>span{font-size:9px}.learning-tracks .chapter-num{font-size:19px}.learning-tracks .chapter-card p{font-size:10px}}
@media(max-width:1000px){.learning-header{grid-template-columns:1fr;gap:22px}.resume-card{max-width:100%;display:grid;grid-template-columns:1fr auto;column-gap:20px;padding:20px}.resume-card .eyebrow,.resume-card h2,.resume-card p{grid-column:1}.resume-card p{margin-bottom:0}.resume-card .button{grid-column:2;grid-row:1/4;align-self:center}.learning-tracks{grid-template-columns:repeat(2,minmax(0,1fr))}.learning-tracks .chapter-card{min-height:173px;padding:20px}.learning-tracks .chapter-card h3{font-size:21px}.lesson-search{grid-template-columns:minmax(0,1fr) 150px}.lesson-search label{grid-column:1/-1}.completion-box{flex-wrap:wrap}}
@media(max-width:700px){.optional-tools{flex-shrink:0;min-width:170px;border:0;margin:0;padding:0}.optional-tools summary{padding:12px 8px}.optional-tools[open]{min-width:220px}.optional-tools .side-link{font-size:10px}.learning-header{padding-top:0}.learning-header h1{font-size:36px}.learning-header .intro{font-size:13px}.learning-facts{gap:6px 12px;font-size:10px}.learning-facts span+span:before{margin-right:10px}.resume-card{display:block;padding:20px}.resume-card .button{margin-top:15px}.resume-card h2{font-size:24px}.learning-tracks .chapter-card{min-height:178px;padding:17px 14px}.learning-tracks .chapter-card h3{font-size:20px}.learning-tracks .chapter-card p{font-size:11px}.curriculum-panel{padding:20px 15px}.lesson-search{gap:10px;grid-template-columns:1fr}.lesson-search label{grid-column:auto}.lesson-search input,.lesson-search select{font-size:12px}.track-heading{display:block}.track-heading h2{font-size:26px}.track-heading .pill{margin-top:13px}.track-footer{flex-wrap:wrap}.row-arrow{display:none}.curriculum-panel .lesson-row{gap:10px}.curriculum-panel .lesson-row p{font-size:11px}.lesson-jumps{gap:10px 16px}.key-terms dl{grid-template-columns:1fr}.completion-box{padding:20px}.completion-box .button{width:100%}.track-summary{gap:8px 18px;font-size:11px}}

/* Lesson graphics use the existing Tailhedge palette and native vectors. */
.learn-icon{width:24px;height:24px;flex:none;display:inline-block;vertical-align:middle}.lesson-visual{margin:24px 0 22px;padding:26px;border:1px solid var(--border-2);border-radius:12px;background:var(--card);overflow:hidden}.visual-heading{display:flex;justify-content:space-between;gap:14px;align-items:center;color:var(--accent)}.visual-heading>.learn-icon{width:21px;height:21px;opacity:.7}.lesson-visual h2{font-size:27px;line-height:1.25;letter-spacing:-.45px;margin:12px 0 25px;max-width:590px}.lesson-visual figcaption{font-size:12px;line-height:1.75;color:var(--muted);margin-top:22px;padding-top:16px;border-top:1px solid var(--border)}.concept-flow{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.concept-flow.count-3{grid-template-columns:repeat(3,minmax(0,1fr))}.concept-step{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:18px}.concept-top{display:flex;justify-content:space-between;align-items:center;gap:8px}.visual-icon{display:inline-flex;align-items:center;justify-content:center;color:var(--accent);background:var(--iv-hero);width:43px;height:43px;border-radius:10px}.step-number{font-size:10px;font-weight:650;color:var(--muted);letter-spacing:1px}.concept-step h3{font-size:15px;margin:15px 0 6px}.concept-step p{font-size:12px;color:var(--muted);line-height:1.7;margin:0}.visual-compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.compare-panel{border:1px solid var(--border);border-radius:9px;padding:20px;background:var(--bg)}.compare-panel:nth-child(2){background:var(--card-2)}.compare-panel h3{font-size:17px;margin:15px 0 12px}.compare-panel ul{list-style:none;padding:0;margin:0;font-size:12px;color:var(--muted)}.compare-panel li{padding:8px 0;border-top:1px solid var(--border);line-height:1.6}.bar-row{margin:18px 0}.bar-label{display:flex;justify-content:space-between;align-items:baseline;gap:16px;font-size:12px;margin-bottom:8px}.bar-label b{font-variant-numeric:tabular-nums;font-size:16px;color:var(--accent);white-space:nowrap}.bar-track{height:21px;border-radius:5px;background:var(--bg-2);overflow:hidden}.bar-track>span{height:100%;display:block;border-radius:5px;background:var(--accent);transition:width .25s}.bar-track>.series-1{background:#a77a4d}.bar-axis{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin-top:7px}.chart-values{font-size:11px;color:var(--muted);margin-top:18px}.chart-values summary{cursor:pointer;text-decoration:underline;text-underline-offset:3px}.chart-table-wrap{max-width:100%;overflow:auto}.chart-values table{border-collapse:collapse;width:100%;margin-top:12px;font-size:11px}.chart-values th,.chart-values td{padding:9px;text-align:left;border-bottom:1px solid var(--border);font-variant-numeric:tabular-nums}.plot-legend{display:flex;gap:12px 22px;flex-wrap:wrap;font-size:11px;color:var(--muted)}.plot-legend>span{display:flex;align-items:center;gap:8px}.plot-legend i{width:20px;height:3px;background:var(--accent)}.plot-legend i.series-1{background:#a77a4d}.line-plot{display:block;width:100%;max-width:600px;margin:12px auto 0;overflow:visible}.plot-grid{stroke:var(--border);stroke-width:.8;stroke-dasharray:3 4}.plot-axis{font:10px system-ui,sans-serif;fill:var(--muted)}.plot-line{stroke:var(--accent);fill:none;stroke-width:2.4;stroke-linejoin:round}.plot-line.series-1{stroke:#a77a4d;stroke-dasharray:5 3}.plot-dot{fill:var(--accent);stroke:var(--card);stroke-width:1.5}.plot-dot.series-1{fill:#a77a4d}.plot-endpoints{display:flex;gap:25px;justify-content:center;margin-top:10px}.plot-endpoints span{display:flex;flex-direction:column;gap:5px}.plot-endpoints small{font-size:10px;color:var(--muted)}.plot-endpoints b{font:25px Georgia,serif;color:var(--accent)}.plot-endpoints span:nth-child(2) b{color:#a77a4d}.allocation-visual{padding:15px 0}.allocation-bar{display:flex;height:62px;border-radius:9px;overflow:hidden}.allocation-part{display:flex;align-items:center;justify-content:center;color:white;font:23px Georgia,serif}.part-0{background:var(--accent)}.part-1{background:#a77a4d}.allocation-key{margin-top:22px;display:grid;gap:13px}.allocation-key>div{display:flex;align-items:center;gap:10px;font-size:13px}.allocation-key i{width:10px;height:10px;border-radius:2px}.allocation-key b{margin-left:auto}.valuation-controls{display:flex;gap:9px;align-items:center;font-size:12px;flex-wrap:wrap}.valuation-controls>span{margin-right:auto;color:var(--muted)}.valuation-controls button{padding:7px 18px;border:1px solid var(--border-2);background:var(--bg);color:var(--text);border-radius:7px;font-size:13px}.valuation-controls button[aria-pressed=true]{background:var(--accent);color:var(--bg);border-color:var(--accent)}.valuation-equation{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:12px;align-items:center;margin:22px 0}.valuation-equation>div{padding:17px 10px;background:var(--bg);border:1px solid var(--border);border-radius:8px;text-align:center}.valuation-equation small{display:block;font-size:10px;color:var(--muted);min-height:30px}.valuation-equation strong{font:34px Georgia,serif;display:block;margin-top:5px}.valuation-equation>span{font:23px Georgia,serif;color:var(--muted)}.valuation-equation .valuation-answer{background:var(--iv-hero);border-color:var(--accent);color:var(--accent)}.lesson-explanation{margin:22px 0;border:1px solid var(--border);border-radius:7px;background:var(--card)}.lesson-explanation>summary{padding:16px 20px;font-size:12px;font-weight:600;color:var(--accent);cursor:pointer}.lesson-explanation .learn-icon{width:18px;height:18px;margin-right:9px}.lesson-explanation .reading{padding:10px 22px;font-size:14px}.legend-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;align-self:start}.legend-card{display:flex;align-items:center;gap:14px;padding:19px;border:1px solid var(--border);border-radius:9px;background:var(--card);text-decoration:none;min-width:0}.legend-card:hover{border-color:var(--accent);background:var(--iv-hero)}.legend-monogram{height:43px;width:43px;flex:none;border:1px solid var(--border-2);border-radius:50%;display:grid;place-items:center;background:var(--card-2);color:var(--accent);font:17px Georgia,serif}.legend-card h3{font:21px Georgia,serif;margin:0 0 7px}.legend-card p{font-size:12px;line-height:1.5;color:var(--muted);margin:0 0 7px}.legend-card div>span{font-size:10px;color:var(--muted)}.legend-arrow{margin-left:auto;color:var(--accent)}.legends-callout{display:flex;align-items:center;gap:16px;padding:22px;margin:25px 0;border:1px solid var(--border-2);border-radius:8px;text-decoration:none;background:var(--iv-hero);color:var(--accent)}.legends-callout small{display:block;font-size:11px;color:var(--muted);margin-top:5px}.legends-callout>span:last-child{margin-left:auto}.legend-warning{display:flex;gap:15px;align-items:start;border-left:3px solid #a77a4d;background:var(--card);padding:18px 20px;border-radius:0 7px 7px 0}.legend-warning>.learn-icon{color:#a77a4d;width:21px;height:21px}.legend-warning p{font-size:12px;line-height:1.8;margin:8px 0 0;color:var(--muted)}.legend-checklist{border:1px solid var(--border);background:var(--card);border-radius:7px;margin:12px 0}.legend-checklist summary{display:flex;align-items:center;gap:12px;cursor:pointer;padding:17px 20px;font-size:13px}.legend-checklist summary .learn-icon{color:var(--accent);width:20px;height:20px}.legend-checklist summary b{margin-left:auto;font-size:10px;color:var(--muted)}.legend-checklist summary:after{content:'+';font-size:18px;color:var(--accent)}.legend-checklist[open] summary:after{content:'−'}.legend-checklist ol{margin:0;padding:0 20px 12px;list-style:none}.legend-checklist li{border-top:1px solid var(--border);padding:13px 0;display:flex;gap:12px;font-size:12px;line-height:1.7}.legend-checklist li>.learn-icon{width:16px;height:16px;margin-top:3px;color:var(--muted)}.legend-attribution{font-size:11px;line-height:1.8;color:var(--muted);margin:18px 0}.related-style{display:flex;gap:9px;align-items:center;color:var(--accent);font-size:12px;margin-bottom:20px}.related-style .learn-icon{width:18px;height:18px}.lesson-goal{margin-bottom:20px}.lesson-layout>.lesson-aside{font-size:11px}
@media(max-width:1150px){.concept-flow.count-3{grid-template-columns:1fr}.concept-flow.count-3 .concept-step{display:grid;grid-template-columns:65px 1fr;gap:0 12px}.concept-flow.count-3 .concept-top{grid-row:1/3}.concept-flow.count-3 h3{margin:0 0 5px}.concept-flow.count-3 .step-number{display:none}.legend-grid{grid-template-columns:1fr}}
@media(max-width:700px){.lesson-visual{padding:20px 17px;margin:20px 0}.lesson-visual h2{font-size:25px;margin:12px 0 23px}.visual-heading .eyebrow{font-size:9px;letter-spacing:1px}.concept-flow{grid-template-columns:1fr;gap:10px}.concept-step{display:grid;grid-template-columns:48px 1fr;gap:0 12px;padding:16px}.concept-top{grid-row:1/3}.concept-step h3{margin:0 0 5px;font-size:14px}.concept-step p{font-size:12px}.step-number{display:none}.visual-icon{width:38px;height:38px}.visual-compare{grid-template-columns:1fr;gap:12px}.compare-panel{padding:17px}.compare-panel h3{font-size:17px;display:inline-block;margin:0 0 10px 10px;vertical-align:middle}.compare-panel ul{margin-top:7px}.bar-label{font-size:11px}.bar-label b{font-size:15px}.bar-track{height:19px}.valuation-equation{gap:6px}.valuation-equation>div{padding:13px 5px}.valuation-equation strong{font-size:29px}.valuation-equation small{font-size:9px;min-height:29px}.valuation-equation>span{font-size:19px}.valuation-controls>span{width:100%;margin-bottom:3px}.valuation-controls button{flex:1}.legend-card{padding:18px 15px}.legend-card h3{font-size:22px}.legend-card p{font-size:12px}.legend-grid{grid-template-columns:1fr}.legend-checklist summary{padding:16px}.legend-checklist ol{padding:0 16px 10px}.legend-warning{padding:17px}.plot-endpoints{gap:22px}.plot-endpoints b{font-size:23px}.lesson-visual figcaption{font-size:11px}.lesson-explanation .reading{padding:8px 17px;font-size:13px}}
/* SyncInvest Academy teaching layout, adapted to Tailhedge navigation. */


body{font:15px/1.6 'Inter','Segoe UI',system-ui,sans-serif;background:var(--bg)}
main{max-width:1240px;padding:26px 32px 48px}.topbar{height:58px;padding:0 32px;background:var(--card)}
h1,h2,h3,h4,.display,.page-head h1,.learning-header h1,.learning-tracks .chapter-card h3,.resume-card h2,.legend-card h3,.completion-box h3,.sidebar-bottom p,.plot-endpoints b,.valuation-equation strong{font-family:'Inter','Segoe UI',system-ui,sans-serif;font-weight:750;letter-spacing:-.4px}
h1,.page-head h1,.learning-header h1{font-size:30px;line-height:1.25;margin-bottom:10px}h2,.section-head h2{font-size:21px;line-height:1.35}h3{font-size:16px}
.page-head{margin:12px 0 16px;padding:0}.page-head p{max-width:760px;font-size:14px;line-height:1.6}.eyebrow{font-size:11px;letter-spacing:.65px}.button{border-radius:9px;font-size:13px;color:#fff}.button.secondary,.button.quiet{color:var(--text)}.button.small{font-size:12px}.sidebar{padding:23px 16px;width:220px}.main-shell{margin-left:220px}.sidebar .side-link{font-size:12px;min-height:38px}.sidebar-bottom p{font-size:15px}.sidebar-bottom small{font-size:11px}.brand{font-family:'Segoe UI',sans-serif;font-weight:750;font-size:24px}.platform-link{font-size:12px;margin:22px 8px 12px}.brand small{font-size:9px}.nav-section{font-size:10px}.sidebar-bottom{padding-top:22px}
.learning-header{gap:28px;padding:0 0 20px}.learning-header .intro{font-size:14px;line-height:1.65}.learning-facts{font-size:12px}.resume-card{padding:20px;border-radius:14px;background:var(--card)}.resume-card h2{font-size:21px}.progress-strip{padding:16px 0;margin-bottom:24px}.progress-label b{font-size:13px}.progress-label small,.progress-strip a{font-size:12px}.learning-tracks{gap:12px;grid-template-columns:repeat(3,minmax(0,1fr))}.learning-tracks .chapter-card{padding:18px;min-height:165px;border-radius:14px;box-shadow:0 1px 3px #0f18220b}.learning-tracks .chapter-card h3{font-size:18px}.learning-tracks .chapter-card p{font-size:12px;line-height:1.55}.chapter-num{font:700 16px 'Segoe UI',sans-serif}.chapter-num>span,.card-foot{font-size:11px}.chapter-card.selected{border-color:var(--accent);background:var(--card)}.section-head{margin:24px 0 14px}.section-head p{font-size:13px}.curriculum-panel{border-radius:14px;padding:22px}.lesson-row{padding:13px 16px;gap:14px;background:var(--card);border:1px solid var(--border);border-radius:14px;margin-bottom:8px}.lesson-row h3{font-size:14.5px;font-weight:700}.lesson-row p{font-size:12px}.lesson-list{gap:8px}.back-track{font-size:12px}.lesson-layout{grid-template-columns:minmax(0,1fr) 220px;gap:26px}.lesson-aside{padding:16px;background:var(--card);border:1px solid var(--border);border-radius:14px;align-self:start;position:sticky;top:24px}.lesson-aside h3{font-size:14px}.lesson-aside a{font-size:12px}.lesson-aside .aside-help{font-size:11px}.lesson-jumps{margin:10px 0 18px;padding:10px 0;gap:8px;border:0}.lesson-jumps a{border:1px solid var(--border);border-radius:99px;padding:6px 12px;background:var(--card);font-size:12px;font-weight:650;min-height:34px}.lesson-jumps a:hover{border-color:var(--accent)}
.lesson-goal{padding:14px 17px;border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:10px;background:var(--card);margin-bottom:17px}.lesson-goal p{font-size:14px;line-height:1.6;margin:5px 0 0}.lesson-explanation{border:0;border-radius:0;background:none;margin:0}.lesson-explanation .reading,.reading{padding:0;font-size:15px;line-height:1.7;max-width:none}.reading p{margin-bottom:14px}.lesson-visual{padding:18px 20px;margin:18px 0;border-radius:14px;border-color:var(--border);box-shadow:0 1px 3px #0f18220b}.lesson-visual h2{font-size:19px;margin:8px 0 16px;letter-spacing:-.2px}.lesson-visual figcaption{font-size:12px;line-height:1.6;margin-top:16px;padding-top:12px}.visual-heading .eyebrow{font-size:10px;letter-spacing:.5px}.visual-icon{width:36px;height:36px;border-radius:9px}.concept-step{padding:14px;background:var(--card-2)}.concept-step h3{font:700 14px 'Segoe UI',sans-serif;margin:10px 0 6px}.concept-step p,.compare-panel li{font-size:12.5px;line-height:1.55}.visual-compare{gap:12px}.compare-panel{background:var(--card-2);padding:15px}.compare-panel h3{font:700 16px 'Segoe UI',sans-serif}.concept-flow{gap:12px}.concept-flow.count-3{grid-template-columns:1fr}.line-plot{max-height:320px}.example-box{border-radius:14px;padding:18px 20px;margin:18px 0;background:var(--card);border:1px solid var(--border)}.example-box h3{font-size:16px;margin:7px 0}.example-box p{font-size:14px;line-height:1.65}.quick-check{margin:18px 0}.quick-check-label{font-size:11px;font-weight:800;color:var(--accent);text-transform:uppercase;letter-spacing:.5px;display:flex;align-items:center;gap:7px}.quick-check-label .learn-icon{width:16px;height:16px}.quiz{border-radius:14px;padding:18px 20px;margin:10px 0 18px;background:var(--card)}.quiz h3{font-size:15px;line-height:1.55}.quiz-option{font-size:14px;padding:11px 12px;border-radius:10px;background:var(--card-2);margin-bottom:8px}.quiz-response p{font-size:13px}.takeaway{border-radius:10px;background:var(--card);border:1px solid var(--border);border-left:3px solid var(--accent-2);padding:16px 18px}.takeaway p{font-size:14px;line-height:1.6}.key-terms{margin:22px 0}.key-terms h2{font-size:19px}.key-terms dt,.key-terms dd{font-size:13px}.completion-box h3{font-size:18px}.completion-box p{font-size:12px}.legend-card h3{font-size:18px}.legend-monogram{font-family:inherit}.legend-checklist li{font-size:13px}.legend-warning p{font-size:13px}.reading-progress{height:3px;position:fixed;top:0;left:0;right:0;z-index:90;pointer-events:none}.reading-progress span{display:block;height:100%;background:var(--accent)}
.learning-lab h2{font-size:19px}.learning-lab{margin:0 0 18px}.visual-lab .learning-lab{margin:0}.predict-prompt{display:flex;gap:9px;align-items:start;background:var(--card-2);border:1px dashed var(--border-2);border-radius:10px;padding:11px 13px;font-size:13px;line-height:1.55}.predict-prompt .learn-icon{width:18px;height:18px;margin-top:2px;color:var(--accent)}.lab-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:18px 0}.lab-field{display:flex;flex-direction:column;gap:9px}.lab-field>span{display:flex;justify-content:space-between;gap:10px;font-size:12px;font-weight:650}.lab-field output{color:var(--accent);white-space:nowrap;font-variant-numeric:tabular-nums}.lab-field input{width:100%;min-height:28px;accent-color:var(--accent);margin:0}.teaching-plot{display:block;width:100%;max-width:590px;margin:0 auto}.teaching-plot .plot-axis{font-size:11px;fill:var(--muted)}.teaching-plot .plot-line{stroke-width:3;fill:none}.plot-line.series-0{stroke:var(--accent)}.plot-line.series-1{stroke:var(--accent-2);stroke-dasharray:6 4}.plot-legend i.series-0{background:var(--accent)}.plot-legend i.series-1{background:var(--accent-2)}.plot-grid{stroke:var(--border);stroke-width:1}.zero-line{stroke:var(--muted);stroke-dasharray:3 3}.chart-marker{fill:var(--card);stroke:var(--accent);stroke-width:3}.lab-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;padding-top:14px;margin-top:14px;border-top:1px solid var(--border)}.lab-metrics strong{display:block;font-size:23px;line-height:1.3;letter-spacing:-.5px;font-variant-numeric:tabular-nums;color:var(--accent)}.lab-metrics span{display:block;font-size:11px;color:var(--muted);line-height:1.4;margin-top:5px}.lab-note,.chart-caption{font-size:12px;line-height:1.65;color:var(--muted);margin:14px 0 0}.yield-lesson{border-top:1px solid var(--border);padding-top:20px;margin-top:20px}.yield-lesson>p{font-size:13px;color:var(--muted)}.curve-controls{display:flex;gap:8px;margin:10px 0 20px}.curve-controls button{border-radius:99px;background:var(--card-2);border:1px solid var(--border);color:var(--text);padding:7px 13px;font-size:12px;min-height:36px}.curve-controls button[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:#fff}.cash-waterfall{padding:15px 0}.cash-waterfall>div{display:grid;grid-template-columns:150px 1fr 50px;gap:12px;align-items:center;margin:18px 0;font-size:12px}.cash-waterfall b{text-align:right}.waterfall-track{height:24px;background:var(--card-2);border-radius:4px}.waterfall-track i{display:block;height:100%;background:var(--accent);border-radius:4px}.waterfall-track i.deduction{background:var(--neg)}.weight-comparison b{display:block;font-size:12px;margin:15px 0 8px}.weight-comparison p{font-size:12px;color:var(--muted);margin:6px 0}.allocation-part.part-0{background:var(--accent)}.allocation-part.part-1{background:var(--accent-2)}.safety-ruler{margin:16px 27px 0 0;height:132px;position:relative}.ruler-line{position:absolute;top:68px;left:0;right:0;height:3px;background:var(--border-2)}.ruler-gap{position:absolute;height:12px;top:63px;background:var(--accent);opacity:.3}.safety-ruler>span{position:absolute;top:0;transform:translateX(-50%);text-align:center;min-width:55px}.safety-ruler b{font-size:25px;display:block;color:var(--accent)}.safety-ruler small{font-size:11px;display:block}.safety-ruler .ruler-value{top:78px}.safety-ruler .ruler-value b{color:var(--accent-2)}.safety-ruler>span:after{content:'';display:block;position:absolute;left:50%;height:18px;width:2px;background:var(--accent)}.safety-ruler .ruler-price:after{top:50px}.safety-ruler .ruler-value:after{top:-15px;background:var(--accent-2)}.chart-values summary{font-size:12px;min-height:32px;padding-top:5px}.chart-values td,.chart-values th{font-size:12px}.plot-legend{font-size:12px}.lesson-visual .learning-lab+.concept-flow{margin-top:20px;padding-top:20px;border-top:1px solid var(--border)}
@media(max-width:1100px){.lesson-layout{grid-template-columns:minmax(0,1fr)}.lesson-aside{display:none}.learning-tracks{grid-template-columns:repeat(2,minmax(0,1fr))}main{padding:24px}.learning-header{grid-template-columns:1fr}.lab-fields{gap:12px}}
@media(max-width:700px){.sidebar{width:100%;height:auto;padding:16px;position:relative;display:block}.main-shell{margin-left:0}.sidebar-bottom{display:none}.sidebar .platform-link{margin:12px 0}.sidebar .side-link{font-size:12px}.topbar{height:50px;padding:0 18px}.local-label{display:none}main{padding:22px 16px 36px}.page-head h1,.learning-header h1{font-size:27px}.page-head p,.learning-header .intro{font-size:14px}.learning-tracks .chapter-card{padding:14px;min-height:165px}.learning-tracks .chapter-card h3{font-size:16px}.learning-tracks .chapter-card p{font-size:12px}.chapter-num>span{font-size:10px}.lesson-visual,.quiz,.example-box{padding:17px 15px}.lesson-explanation .reading{padding:0;font-size:15px}.lesson-jumps{gap:7px}.lesson-jumps a{font-size:11px;padding:6px 10px}.concept-step{padding:13px}.concept-step h3{margin:0 0 5px}.lab-fields{grid-template-columns:1fr;gap:14px}.lab-metrics{gap:8px}.lab-metrics strong{font-size:21px}.lab-metrics span{font-size:10px}.cash-waterfall>div{grid-template-columns:110px 1fr 42px;gap:8px;font-size:11px}.learning-lab h2,.lesson-visual h2{font-size:18px}.plot-legend{font-size:11px;gap:10px}.key-terms dl{grid-template-columns:1fr}.completion-box h3{font-size:18px}.legend-card h3{font-size:19px}.progress-strip{flex-wrap:wrap}.progress-line{flex-basis:100%}.curriculum-panel{padding:18px 13px}.curve-controls button{flex:1;padding:7px 10px}.lesson-goal p{font-size:13px}.concept-detail{font-size:14px}.chart-caption,.lab-note{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

:root{--iv-display:'Inter','Segoe UI',system-ui,sans-serif;--font:'Inter','Segoe UI',system-ui,sans-serif}.skip-link:not(:focus){width:1px;height:1px;overflow:hidden;clip-path:inset(50%);padding:0;top:0;left:0;white-space:nowrap}.skip-link:focus{width:auto;height:auto;clip-path:none;padding:10px 15px;top:12px;left:12px;z-index:1000}.plot-legend i.series-1{background:repeating-linear-gradient(90deg,var(--accent-2) 0 5px,transparent 5px 8px)}@media(max-width:700px){.teaching-plot .plot-axis{font-size:14px}.teaching-plot>text:last-child{font-size:12px}}

:root[data-theme='dark'] .button:not(.secondary):not(.quiet),:root[data-theme='dark'] .curve-controls button[aria-pressed=true]{color:#0a0f1c}.footer-brand{font-family:'Segoe UI',system-ui,sans-serif}

.quiz h3,.example-box h3{font-family:Inter,"Segoe UI",system-ui,sans-serif;font-weight:650}

/* Tailhedge brand uses the platform tokens imported at the top of this file. */
:root{--iv-display:Georgia,'Times New Roman',serif;--chart-secondary:var(--p-si,#315e8a)}
body{background:var(--bg)}.brand{font-family:var(--iv-display);font-weight:400;font-size:26px}.brand small{font-family:'Segoe UI',sans-serif}.page-head h1,.learning-header h1{font-family:var(--iv-display);font-weight:400;font-size:34px;letter-spacing:-.8px;line-height:1.2}.sidebar{width:224px;padding:26px 16px}.main-shell{margin-left:224px}.topbar{background:var(--bg);border-color:var(--border)}.sidebar-bottom p{font-weight:500;color:var(--muted);line-height:1.65}.learning-header{padding-top:10px}.learning-header .intro{max-width:660px}.resume-card{background:var(--iv-hero);border:1px solid var(--border);box-shadow:none}.resume-card h2{font:400 25px/1.25 var(--iv-display)}.learning-tracks .chapter-card{box-shadow:none;border-radius:10px;transition:border-color .15s,background .15s}.learning-tracks .chapter-card.selected{background:var(--iv-hero);border-color:var(--accent)}.learning-tracks .chapter-card h3{font-size:17px;font-weight:650}.learning-tracks .chapter-num{color:var(--accent)}.chapter-card:hover{background:var(--card-2);transform:none}.lesson-visual,.quiz,.example-box,.lesson-aside,.curriculum-panel{box-shadow:none;border-radius:10px}.lesson-goal{background:var(--iv-hero);border-color:var(--border);border-left-color:var(--accent)}.lesson-goal .eyebrow{color:var(--accent)}.lesson-goal p{color:var(--text)}.lesson-jumps a{background:var(--card);color:var(--muted)}.lesson-jumps a:hover{background:var(--iv-hero);color:var(--accent)}.section-head h2,.track-heading h2{font-family:var(--iv-display);font-weight:400;font-size:27px}.quiz h3,.example-box h3,.learning-lab h2{font-family:'Segoe UI',system-ui,sans-serif}.button{border-radius:7px;font-weight:600}.button.secondary{background:var(--card)}.button.quiet{color:var(--accent)}.plot-line.series-1{stroke:var(--chart-secondary)}.plot-legend i.series-1{background:repeating-linear-gradient(90deg,var(--chart-secondary) 0 5px,transparent 5px 8px)}.plot-dot.series-1{fill:var(--chart-secondary)}.allocation-part.part-1{background:var(--chart-secondary)}.ruler-value b,.safety-ruler .ruler-value b{color:var(--chart-secondary)}.safety-ruler .ruler-value:after{background:var(--chart-secondary)}.predict-prompt{background:var(--card-2)}.lab-metrics strong{color:var(--accent)}.lesson-aside a.current{background:var(--iv-hero)}.practice-promo,.evidence-note{border-radius:10px;background:var(--card);border:1px solid var(--border)}.practice-promo h3,.evidence-note h3{font:400 25px/1.3 var(--iv-display)}.footer-brand{font-family:var(--iv-display)}
.quiz-option{display:flex;align-items:start;gap:10px;position:relative;flex-wrap:wrap;line-height:1.55}.quiz-option>input{accent-color:var(--accent);margin-top:4px}.quiz-option>span{flex:1;min-width:0}.quiz-option:has(input:checked){border-color:var(--accent);background:var(--iv-hero)}.quiz-option.answer-correct{border-color:var(--pos);background:color-mix(in srgb,var(--pos) 8%,var(--card))}.quiz-option.answer-wrong{border-color:var(--neg);background:color-mix(in srgb,var(--neg) 7%,var(--card))}.answer-tag{display:block;flex-basis:100%;padding-left:24px;font-size:11px;font-weight:650;color:var(--pos)}.answer-wrong .answer-tag{color:var(--neg)}.quiz-option:has(input:disabled){cursor:default;opacity:1}.quiz-controls{gap:14px}.confidence{font-size:12px;line-height:1.4}.confidence select{padding:5px 8px;color:var(--text);background:var(--card);border:1px solid var(--border-2);border-radius:5px;min-height:32px}.feedback{border-radius:8px;border-color:var(--border);background:var(--iv-hero);color:var(--text);padding:14px 16px}.feedback.wrong{background:color-mix(in srgb,var(--warn) 7%,var(--card));border-color:var(--border-2);color:var(--text)}.feedback>strong{display:block;margin-bottom:8px;font-size:14px}.feedback p{font-size:13px;line-height:1.65}.feedback p:last-child{margin-bottom:0}.quiz-help{font-size:12px;color:var(--muted);margin:12px 0 0}.practice-area{scroll-margin-top:20px}.training-progress{margin:20px 0 15px}.training-progress>div:first-child{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:8px}.training-meter{height:5px;border-radius:8px;background:var(--border);overflow:hidden}.training-meter>span{display:block;height:100%;background:var(--accent);transition:width .15s}.practice-end{outline:none;text-align:left!important;padding:24px;background:var(--card);border:1px solid var(--border);border-radius:10px}.practice-end>h2{font:400 30px/1.25 var(--iv-display);margin:12px 0}.practice-end>p{font-size:14px;color:var(--muted);max-width:680px}.review-summary{margin:24px 0}.review-result{display:flex;gap:14px;padding:17px 0;border-top:1px solid var(--border)}.review-result:last-child{border-bottom:1px solid var(--border)}.review-symbol{width:28px;height:28px;display:grid;place-items:center;border:1px solid var(--border);border-radius:50%;flex:none;color:var(--pos);background:var(--card-2)}.needs-review .review-symbol{color:var(--warn)}.review-result h3{font:650 15px/1.4 'Segoe UI',system-ui,sans-serif;margin:5px 0 6px}.review-result p{font-size:13px;line-height:1.7;max-width:650px;margin:8px 0}.review-result a{font-size:12px;color:var(--accent)}.review-result .eyebrow{font-size:9px;letter-spacing:.7px;color:var(--muted)}.practice-end .retry-note{font-size:12px;margin:18px 0 0}.practice-end .actions{justify-content:flex-start}.stats .stat strong{color:var(--accent)}#academy-menu{display:none}
:root[data-theme='dark'] .button:not(.secondary):not(.quiet),:root[data-theme='dark'] .curve-controls button[aria-pressed=true]{color:var(--bg)}:root[data-theme='dark'] .quiz-option.answer-wrong{border-color:var(--neg)}
@media(max-width:700px){.sidebar{width:100%;padding:17px 18px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:13px;border-bottom:1px solid var(--border);position:relative;height:auto}.brand{font-size:24px;grid-column:1;grid-row:1}.sidebar .platform-link{grid-column:1;grid-row:2;font-size:11px;margin:0}.sidebar #academy-nav{display:none;grid-column:1/-1;max-height:65vh;overflow:auto;width:100%;padding:6px 0}.sidebar.nav-open #academy-nav{display:block}.sidebar #academy-nav .side-link{display:flex;white-space:normal;padding:10px 12px;min-height:40px}.sidebar #academy-nav .nav-section{display:block;margin:12px}.sidebar #academy-nav .optional-tools{display:block;border-top:1px solid var(--border);margin-top:12px}.sidebar .sidebar-bottom{display:none}#academy-menu{display:flex;align-items:center;gap:10px;align-self:center;grid-column:2;grid-row:1/3;border:1px solid var(--border-2);background:var(--card);color:var(--text);border-radius:6px;padding:8px 10px;min-height:38px;font-size:11px}.main-shell{margin-left:0}.topbar{height:44px}.page-head h1,.learning-header h1{font-size:30px}.learning-header{padding-top:0}.section-head h2,.track-heading h2{font-size:25px}.lesson-jumps{gap:6px}.lesson-jumps a{font-size:11px;padding:6px 9px}.quiz-controls{align-items:stretch}.quiz-controls .button{min-height:42px}.quiz-option{padding:12px}.practice-end{padding:19px 16px}.practice-end>h2{font-size:27px}.practice-end .actions{display:flex;flex-direction:column;align-items:stretch}.review-result{gap:10px}.review-result h3{font-size:14px}.confidence{display:flex;align-items:center;justify-content:space-between;gap:10px}.learning-tracks .chapter-card h3{font-size:16px}.resume-card h2{font-size:23px}.lab-metrics strong{font-size:21px}}

@media(max-width:700px){.sidebar .platform-link{position:static;inset:auto;justify-self:start}.review-question{font-weight:600}}

.quiz .quiz-option.answer-correct{border-color:var(--pos);background:color-mix(in srgb,var(--pos) 8%,var(--card))}.quiz .quiz-option.answer-wrong{border-color:var(--neg);background:color-mix(in srgb,var(--neg) 7%,var(--card))}.quiz .quiz-option:has(input:disabled):not(.answer-correct):not(.answer-wrong){border-color:var(--border);background:var(--card-2)}@media(max-width:700px){[data-page='practice'] .stats{gap:8px;margin:16px 0}[data-page='practice'] .stat{padding:12px 10px}[data-page='practice'] .stat strong{font-size:25px}[data-page='practice'] .stat span{font-size:10px}[data-page='practice'] .practice-controls{gap:8px;margin:16px 0}[data-page='practice'] .page-head .intro{font-size:13px;line-height:1.6}[data-page='practice'] .training-progress{margin:16px 0 12px}}

/* Eight-part lesson sequence */
.page-head .intro:empty{display:none}
.lesson-sequence{min-width:0}
.lesson-sequence>.lesson-section{margin:28px 0;scroll-margin-top:22px}
.lesson-section-heading{display:grid;grid-template-columns:28px 19px minmax(0,1fr);align-items:center;gap:9px;font:650 18px/1.4 system-ui,-apple-system,'Segoe UI',sans-serif;letter-spacing:0;margin:0 0 17px;color:var(--text)}
.lesson-section-heading .learn-icon{width:19px;height:19px;color:var(--accent)}
.lesson-section-number{font-size:11px;line-height:26px;text-align:center;color:var(--accent);background:var(--card-2);border:1px solid var(--border);border-radius:5px;font-variant-numeric:tabular-nums}
.lesson-section-heading small{display:block;font-size:11px;font-weight:400;color:var(--muted);margin-top:3px}
.lesson-tldr{padding:20px 23px;background:var(--iv-hero);border:1px solid var(--border);border-radius:8px}
.lesson-tldr p{font-size:15px;line-height:1.55;margin:0;color:var(--text)}
.lesson-explanation .lesson-goal{margin:12px 0 23px}
.lesson-explanation .lesson-goal p{margin:6px 0 0}
.lesson-explanation .key-terms{margin:24px 0 0;padding-top:19px;border-top:1px solid var(--border)}
.lesson-explanation .key-terms h3{display:flex;align-items:center;gap:7px;font:600 13px/1.4 system-ui,-apple-system,'Segoe UI',sans-serif;letter-spacing:0;margin:0 0 12px}
.key-terms-marker{display:inline-flex;color:var(--accent)}.key-terms-marker .learn-icon{width:16px;height:16px;fill:#d8be83}
.lesson-section .lesson-visual{margin:0}
.lesson-quote{padding:24px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.lesson-quote figure{margin:0}
.lesson-quote blockquote{margin:0;padding:1px 0 1px 20px;border-left:3px solid var(--accent)}
.lesson-quote blockquote p{font:23px/1.55 Georgia,'Times New Roman',serif;margin:0;overflow-wrap:anywhere}
.lesson-quote figcaption{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 18px;margin:14px 0 0 23px;font-size:11px;color:var(--muted)}
.lesson-quote cite{font-style:normal}
.lesson-quote figcaption a{color:var(--accent);white-space:nowrap}
.lesson-sequence .example-box>.lesson-section-heading{margin-bottom:16px}
.lesson-sequence .example-box>p{margin-bottom:0}
.lesson-sequence .takeaway>.lesson-section-heading{margin-bottom:10px}
.quiz-section-intro{font-size:12px;color:var(--muted);margin-bottom:17px}
#lesson-quiz>.quiz:last-child{margin-bottom:0}
.tailhedge-application{border-color:var(--accent);border-left-width:3px}
.tailhedge-application>.lesson-section-heading{font-weight:700}
.tailhedge-application>.button{margin-top:17px}
.lesson-jumps a>span{color:var(--muted);font-size:10px}

/* Shared lesson surfaces: understand, apply, quiz, then use Tailhedge. */
.lesson-sequence>:is(#lesson-overview,#lesson-explanation,#lesson-visual-section,#lesson-quote){margin:0;padding:23px 24px;background:var(--card);border:1px solid var(--border);border-top:0;border-radius:0}
.lesson-sequence>#lesson-overview{margin-top:28px;border-top:1px solid var(--border);border-radius:10px 10px 0 0}
.lesson-sequence>#lesson-quote{border-radius:0 0 10px 10px;padding-top:10px}
.lesson-sequence>#lesson-explanation .reading p:last-child{margin-bottom:0}
.lesson-sequence #lesson-visual-section .lesson-visual{background:var(--card);border:0;padding:0;margin:0;box-shadow:none}
.lesson-sequence>:is(#lesson-example,#lesson-takeaway){margin:0;padding:23px 24px;background:var(--card-2);border:1px solid var(--border);border-radius:0}
.lesson-sequence>#lesson-example{margin-top:24px;border-bottom:0;border-radius:10px 10px 0 0}
.lesson-sequence>#lesson-takeaway{border-top:1px solid var(--border);border-radius:0 0 10px 10px}
.lesson-sequence>#lesson-quiz{margin:24px 0;padding:23px 24px;background:var(--iv-hero);border:1px solid var(--border-2);border-radius:10px}
#lesson-quiz>.quiz{margin:0;padding:0;background:transparent;border:0;border-radius:0;box-shadow:none}
#lesson-quiz>.quiz+.quiz{margin-top:24px;padding-top:24px;border-top:1px solid var(--border-2)}
#lesson-quiz .quiz-option:not(.answer-correct):not(.answer-wrong):not(:has(input:checked)):not(:has(input:disabled)){background:var(--card)}
#lesson-quiz .quiz-section-intro{margin-bottom:20px;color:var(--muted)}
.lesson-sequence>#lesson-apply{margin-top:24px;border-radius:10px}
@media(max-width:700px){.lesson-sequence>:is(#lesson-overview,#lesson-explanation,#lesson-visual-section,#lesson-quote,#lesson-example,#lesson-takeaway,#lesson-quiz){padding:18px 16px;margin-bottom:0}.lesson-sequence>:is(#lesson-explanation,#lesson-visual-section,#lesson-quote,#lesson-takeaway){margin-top:0}.lesson-sequence>#lesson-overview{margin-top:23px}.lesson-sequence>#lesson-quote{padding-top:7px}.lesson-sequence>:is(#lesson-example,#lesson-quiz,#lesson-apply){margin-top:23px}#lesson-quiz>.quiz+.quiz{margin-top:22px;padding-top:22px}}
@media(max-width:700px){.lesson-sequence>.lesson-section{margin:23px 0}.lesson-section-heading{font-size:16px;gap:7px;grid-template-columns:25px 17px minmax(0,1fr)}.lesson-section-heading .learn-icon{width:17px;height:17px}.lesson-tldr{padding:17px 18px}.lesson-tldr p{font-size:14px}.lesson-quote blockquote{padding-left:14px}.lesson-quote blockquote p{font-size:21px}.lesson-quote figcaption{margin-left:17px}.lesson-jumps{margin-bottom:20px}}

/* Compact lesson spacing keeps the eight sections and their shared surfaces. */
main[data-page='lesson']{padding-top:18px}
[data-page='lesson'] .page-head{margin:8px 0 10px}
[data-page='lesson'] .page-head h1{margin:10px 0}
[data-page='lesson'] .lesson-jumps{margin:6px 0 12px;padding:6px 0;gap:6px}
[data-page='lesson'] .lesson-sequence>:is(#lesson-overview,#lesson-explanation,#lesson-visual-section,#lesson-quote,#lesson-example,#lesson-takeaway,#lesson-quiz,#lesson-apply){margin:0;padding:16px 18px}
[data-page='lesson'] .lesson-sequence>#lesson-overview{margin-top:12px}
[data-page='lesson'] .lesson-sequence>:is(#lesson-example,#lesson-quiz,#lesson-apply){margin-top:16px}
[data-page='lesson'] .lesson-sequence>#lesson-quote{padding-top:10px}
[data-page='lesson'] .lesson-section-heading{margin-bottom:12px}
[data-page='lesson'] .lesson-tldr{padding:12px 18px}
[data-page='lesson'] .lesson-tldr .lesson-section-heading{margin-bottom:6px}
[data-page='lesson'] .reading{line-height:1.65}
[data-page='lesson'] .reading p{margin-bottom:12px}
[data-page='lesson'] .key-terms{margin-top:16px;padding-top:12px}
[data-page='lesson'] .key-terms h3{margin-bottom:8px}
[data-page='lesson'] .key-terms dl{gap:12px}
[data-page='lesson'] .key-terms dl>div{padding-top:8px}
[data-page='lesson'] .concept-diagram{margin:12px 0 8px;padding:6px 0}
[data-page='lesson'] .diagram-details{margin:8px 0}
[data-page='lesson'] .lesson-visual h2{margin:6px 0 12px}
[data-page='lesson'] .lesson-visual figcaption{margin-top:10px;padding-top:8px}
[data-page='lesson'] .lesson-video{margin:16px 0 0}
.lesson-video-heading{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:6px 14px}
.lesson-video-heading h3{font-size:15px;margin:0;line-height:1.5}
.lesson-video-heading a{font-size:12px;color:var(--accent);white-space:nowrap}
[data-page='lesson'] .lesson-video video{margin:8px 0 0}
[data-page='lesson'] .lesson-quote blockquote p{font-size:21px;line-height:1.45}
[data-page='lesson'] .lesson-quote figcaption{margin-top:10px}
[data-page='lesson'] .quiz-section-intro{margin-bottom:12px}
[data-page='lesson'] .quiz h3{margin:7px 0 12px}
[data-page='lesson'] .quiz-option{min-height:44px;padding:10px 12px;margin:7px 0}
[data-page='lesson'] #lesson-quiz>.quiz+.quiz{margin-top:18px;padding-top:18px}
[data-page='lesson'] .quiz-controls{margin-top:14px}
[data-page='lesson'] .source-links{margin-top:18px;padding:12px 0}
[data-page='lesson'] .completion-box{margin-top:18px;padding:16px 18px}
[data-page='lesson'] .lesson-end{margin-top:18px;padding-top:18px}
@media(max-width:700px){main[data-page='lesson']{padding-top:14px}[data-page='lesson'] .lesson-sequence>:is(#lesson-overview,#lesson-explanation,#lesson-visual-section,#lesson-quote,#lesson-example,#lesson-takeaway,#lesson-quiz,#lesson-apply){padding:14px}[data-page='lesson'] .lesson-sequence>:is(#lesson-explanation,#lesson-visual-section,#lesson-quote,#lesson-takeaway){margin-top:0}[data-page='lesson'] .lesson-jumps{margin-bottom:10px}[data-page='lesson'] .lesson-section-heading{margin-bottom:10px}[data-page='lesson'] .lesson-quote blockquote p{font-size:20px}.lesson-video-heading h3{font-size:14px}}

/* Explanation, visual examples and video share one concept section. */
[data-page='lesson'] #lesson-explanation>.concept-visual{margin-top:16px}
[data-page='lesson'] .concept-visual .visual-flow .visual-heading,[data-page='lesson'] .concept-visual .visual-compare .visual-heading{display:none}
[data-page='lesson'] .concept-visual .visual-flow>h2,[data-page='lesson'] .concept-visual .visual-compare>h2{font-size:17px;margin:0 0 10px}

/* A comparison SVG already lays out its panels internally. */
.lesson-visual.visual-compare{display:block}
.chapter-path-layout{grid-template-columns:270px minmax(0,1fr);gap:24px;align-items:start}
.chapter-path-layout>.chapter-outcomes{background:var(--iv-hero);border-top:3px solid var(--accent)}
.chapter-path-layout>.chapter-outcomes h3{font-size:24px;line-height:1.25}
.chapter-path-layout>.chapter-outcomes ol{padding-left:18px;line-height:1.65}
.path-switch-label{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:10px 15px;min-height:42px;background:var(--accent);color:var(--card);border:1px solid var(--accent);border-radius:7px;font-size:13px;font-weight:650;white-space:nowrap;text-decoration:none;box-shadow:0 1px 2px #12302516}
.path-picker summary:hover .path-switch-label{filter:brightness(.94)}
.path-picker summary:focus-visible .path-switch-label{outline:3px solid var(--accent-2);outline-offset:3px}

[data-page='lesson']{--learn-blue:#edf4fc;--learn-blue-line:#42739e;--learn-amber:#fff2d3;--learn-amber-line:#b17b22;--learn-lilac:#f4eff9;--learn-lilac-line:#8064a3;--learn-sand:#faf4e9;--learn-ink:#20342e}
[data-theme='dark'] [data-page='lesson']{--learn-blue:#1d3040;--learn-blue-line:#87b3d9;--learn-amber:#3b321e;--learn-amber-line:#e0b864;--learn-lilac:#302938;--learn-lilac-line:#bda4d5;--learn-sand:#302d24;--learn-ink:#f2f5ee}
[data-page='lesson'] .key-terms dl>div{padding:10px 12px;background:var(--learn-blue);border:1px solid var(--border);border-left:3px solid var(--learn-blue-line);border-radius:7px}
[data-page='lesson'] .key-terms dt{color:var(--learn-ink)}
[data-page='lesson'] .key-terms dd{color:var(--text);line-height:1.55}
[data-page='lesson'] .lesson-sequence>#lesson-overview{background:var(--iv-hero);border-top:3px solid var(--accent)}
[data-page='lesson'] .lesson-sequence>#lesson-quote{background:var(--learn-lilac);border-left:3px solid var(--learn-lilac-line)}
[data-page='lesson'] .lesson-sequence>#lesson-example{background:var(--learn-sand)}
[data-page='lesson'] .lesson-sequence>#lesson-takeaway{background:var(--learn-amber);border-top:1px solid var(--learn-amber-line);border-left:4px solid var(--learn-amber-line);color:var(--learn-ink)}
[data-page='lesson'] #lesson-takeaway p{font-weight:600;font-size:15px;line-height:1.6}
[data-page='lesson'] #lesson-takeaway .learn-icon{color:var(--learn-amber-line)}
[data-page='lesson'] .lesson-sequence>#lesson-quiz{background:var(--learn-blue);border-top:3px solid var(--learn-blue-line)}
[data-page='lesson'] #lesson-quiz>.quiz+.quiz{border-top-color:var(--learn-blue-line)}
[data-page='lesson'] .example-calculation{display:block;background:var(--card);color:var(--learn-ink);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:6px;padding:10px 12px;margin:10px 0;font-size:16px;line-height:1.6;font-weight:650;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
[data-page='lesson'] .source-links{border-top:1px solid var(--border);font-size:11px;line-height:1.8;margin-bottom:0}
@media(max-width:1100px){.chapter-path-layout{grid-template-columns:235px minmax(0,1fr);gap:18px}.chapter-path-layout>.chapter-outcomes h3{font-size:22px}}
@media(max-width:950px){.chapter-path-layout{grid-template-columns:1fr}.chapter-path-layout>.chapter-outcomes{width:100%}.chapter-outcomes .track-aside-note{margin-top:12px!important}}
@media(max-width:700px){.path-switch-label{padding:9px 12px;font-size:12px;min-height:40px}[data-page='lesson'] .example-calculation{font-size:14px;padding:9px 10px}}

/* Chapter actions, original wordmark proportions and an interactive growth curve. */
.sidebar>.brand{gap:10px;align-items:center;font-family:Georgia,'Times New Roman',serif;font-size:26px;font-weight:400;letter-spacing:-.9px;line-height:1}
.sidebar>.brand img{width:36px;height:36px;flex:none}.sidebar>.brand small{font-family:'Segoe UI',sans-serif;font-size:9px;line-height:1;letter-spacing:1px;margin-top:1px}
.chapter-back{display:inline-block;margin-bottom:16px}.chapter-heading{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:24px}.chapter-heading .page-head{margin-bottom:14px}.chapter-quiz{margin-top:27px;white-space:nowrap}.chapter-outcomes ol{font-size:15px!important;line-height:1.6!important}.chapter-outcomes ol li+li{margin-top:10px}
.calc-sample{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:12px 14px;border:1px solid var(--border);border-radius:7px;background:var(--card);font-size:13px;margin-top:14px}.calc-sample .button{flex:none}.calc-worked{font-size:15px!important;line-height:1.65;margin:18px 0 10px!important}.calc-results>div{min-width:0}.calc-results strong{overflow-wrap:anywhere}
.compound-curve{margin:18px 0 0;padding:16px;background:var(--card);border:1px solid var(--border);border-radius:9px;container-type:inline-size}.compound-curve figcaption{font-size:15px;font-weight:650;margin-bottom:10px}.curve-legend{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:12px}.curve-legend span{display:inline-flex;gap:7px;align-items:center}.curve-legend i{display:inline-block;width:24px;border-top:3px solid}.curve-gross{color:#956422;stroke:#956422;stroke-dasharray:6 4}.curve-net{color:var(--accent);stroke:var(--accent)}.curve-real{color:#356890;stroke:#356890;stroke-dasharray:3 4}.curve-legend .curve-gross{border-top-style:dashed}.curve-legend .curve-real{border-top-style:dotted}.compound-svg{display:block;width:100%;height:auto;margin-top:10px}.compound-svg text{fill:var(--muted);font-size:14px;font-family:'Segoe UI',sans-serif}.compound-svg line{stroke:var(--border);stroke-width:1}.compound-svg polyline{fill:none;stroke-width:3;stroke-linejoin:round;vector-effect:non-scaling-stroke}.compound-svg circle{fill:var(--card);stroke-width:2;stroke-dasharray:none}.curve-compact{display:none}.curve-data{font-size:12px;margin-top:8px}.curve-data summary{color:var(--accent);cursor:pointer}.curve-table{overflow-x:auto}.curve-table table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}.curve-table :is(th,td){padding:6px;text-align:right;border-bottom:1px solid var(--border)}.curve-table th:first-child{text-align:left}
[data-theme='dark'] .curve-gross{color:#deb476;stroke:#deb476}[data-theme='dark'] .curve-real{color:#88b9df;stroke:#88b9df}
@container(max-width:450px){.curve-wide{display:none}.curve-compact{display:block}.compound-svg text{font-size:13px}}
@media(max-width:700px){.chapter-heading{display:block}.chapter-quiz{margin:0 0 16px}.chapter-heading .page-head{margin-bottom:12px}.calc-sample{align-items:start;flex-direction:column;gap:8px}.compound-curve{padding:10px}.sidebar>.brand{font-size:26px}}

/* Academy figures: consistent scales, series colors and readable compact geometry. */
:root{--graph-primary:#24634f;--graph-secondary:#366da5;--graph-third:#a66b25;--graph-grid:#dce5df;--graph-surface:#f6f9f7;--graph-loss:#ac5147}
[data-theme='dark']{--graph-primary:#83cfad;--graph-secondary:#93bdea;--graph-third:#e1b476;--graph-grid:#344940;--graph-surface:#192b25;--graph-loss:#ee9b90}
.lesson-visual,.compound-curve{font-family:'Segoe UI',system-ui,sans-serif}
[data-page='lesson'] .lesson-visual h2{font-family:'Segoe UI',system-ui,sans-serif;font-size:22px;line-height:1.35;letter-spacing:-.5px;margin:10px 0 22px;font-weight:650;max-width:36em}
.visual-heading{align-items:center}.visual-heading>.learn-icon{width:22px;height:22px;color:var(--graph-primary)}
.plot-frame,.waterfall-frame{container-type:inline-size;border:1px solid var(--graph-grid);border-radius:14px;background:var(--graph-surface);padding:20px 18px 16px;margin:16px 0 10px}
.plot-topline{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 16px;font-size:12px;line-height:1.5;color:var(--muted);font-weight:600}
.plot-selected{color:var(--graph-primary);background:var(--card);border:1px solid var(--graph-grid);padding:4px 9px;border-radius:6px;font-variant-numeric:tabular-nums}
.plot-frame .plot-legend{display:flex;flex-wrap:wrap;gap:10px 24px;margin:16px 0 0;font:12px/1.5 'Segoe UI',sans-serif;color:var(--text)}
.plot-legend>span{display:inline-flex;align-items:center;gap:8px}
.plot-frame .plot-legend i{width:23px;height:0;border-top:3px solid var(--graph-primary);background:none;border-radius:0;flex:none}
.plot-frame .plot-legend i.series-1{border-color:var(--graph-secondary);border-top-style:dashed;background:none}
.academy-plot{display:block;width:100%;height:auto;overflow:visible;margin:8px 0 0}
.plot-compact{display:none}
.academy-plot .plot-axis,.waterfall-plot .plot-axis{font:12px 'Segoe UI',sans-serif;fill:var(--muted);font-variant-numeric:tabular-nums}
.academy-plot .plot-grid,.waterfall-plot .plot-grid{stroke:var(--graph-grid);stroke-width:1;stroke-dasharray:3 5}
.academy-plot .plot-line{fill:none;stroke-width:2.8;stroke-linejoin:round;stroke-linecap:round;vector-effect:non-scaling-stroke}
.academy-plot .series-0{stroke:var(--graph-primary)}
.academy-plot .series-1{stroke:var(--graph-secondary);stroke-dasharray:7 5}
.academy-plot .plot-dot{fill:var(--graph-surface);stroke-width:2;stroke-dasharray:none;vector-effect:non-scaling-stroke}
.academy-plot .plot-area{fill:var(--graph-primary);fill-opacity:.07}
.academy-plot .plot-selection{stroke:var(--graph-primary);stroke-dasharray:3 4;opacity:.45}
.academy-plot .marker-halo{fill:var(--graph-primary);fill-opacity:.16}
.academy-plot .chart-marker{fill:var(--graph-primary);stroke:var(--card);stroke-width:2}
.academy-plot .zero-line,.waterfall-plot .zero-line{stroke:var(--muted);stroke-width:1;stroke-dasharray:none;opacity:.6}
.plot-xlabel{text-align:center;font-size:12px;line-height:1.5;color:var(--muted);margin:0 14px}
.plot-endpoints{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:0 0 14px;text-align:left}
.plot-endpoints .endpoint{min-width:0;border:1px solid var(--graph-grid);border-top:3px solid var(--graph-primary);background:var(--card);border-radius:9px;padding:16px 18px}
.plot-endpoints .endpoint.series-1{border-top-color:var(--graph-secondary)}
.endpoint>span{display:block;font-size:12px;font-weight:600;color:var(--text)}
.endpoint>strong{display:block;color:var(--graph-primary);font-size:clamp(22px,2.7vw,32px);font-weight:650;letter-spacing:-1px;line-height:1.2;margin:7px 0;font-variant-numeric:tabular-nums}
.endpoint.series-1>strong{color:var(--graph-secondary)}
.plot-endpoints .endpoint>small{font-size:11px;color:var(--muted)}
.chart-scale-note{font-size:11px;color:var(--muted);margin:8px 0}
.chart-values{border-top:1px solid var(--graph-grid);padding-top:7px;margin-top:15px}
.chart-values summary{font-size:12px;min-height:40px;display:list-item;padding:10px 0;cursor:pointer;color:var(--graph-primary)}
.chart-values :is(td,th){padding:10px 12px;font-variant-numeric:tabular-nums}.chart-values thead{background:var(--graph-surface)}
.bar-chart{padding:8px 0}.bar-chart .bar-row{margin:0 0 20px}.bar-chart .bar-label{font-size:13px;align-items:baseline;gap:16px;margin-bottom:8px;line-height:1.45}
.bar-chart .bar-label b{font:650 22px/1.2 'Segoe UI',sans-serif;color:var(--text);font-variant-numeric:tabular-nums}
.bar-track{height:20px;background:var(--graph-surface);border:1px solid var(--graph-grid);border-radius:5px;overflow:hidden}
.bar-track>span{border-radius:3px;background:var(--graph-primary)}.bar-track>span.series-1{background:var(--graph-secondary)}
.bar-axis{font:11px/1.5 'Segoe UI',sans-serif;color:var(--muted)}
.lab-fields{padding:18px;background:var(--graph-surface);border:1px solid var(--graph-grid);border-radius:12px;gap:24px;margin:20px 0}
.lab-field>span{font-size:13px;align-items:center}.lab-field output{color:var(--graph-primary);padding:3px 8px;border-radius:5px;background:var(--card);border:1px solid var(--graph-grid);font-size:13px}
.lab-field input{accent-color:var(--graph-primary);min-height:32px}.lab-field input:focus-visible{outline:2px solid var(--graph-secondary);outline-offset:4px;border-radius:4px}
.predict-prompt{border-style:solid;font-size:13px;line-height:1.65;padding:13px 15px;background:var(--card);border-color:var(--graph-grid)}
.lab-metrics{gap:0;border:1px solid var(--graph-grid);border-radius:10px;background:var(--graph-surface);padding:0;overflow:hidden;margin-top:18px}
.lab-metrics>div{padding:16px 14px;min-width:0}.lab-metrics>div+div{border-left:1px solid var(--graph-grid)}
.lab-metrics strong{color:var(--graph-primary);font:650 24px/1.2 'Segoe UI',sans-serif;letter-spacing:-.8px;overflow-wrap:anywhere}
.lab-metrics span{font-size:12px;line-height:1.5;margin-top:7px}.chart-caption{font-size:13px;line-height:1.7;color:var(--text);padding-left:12px;border-left:2px solid var(--graph-grid)}
.lab-note,.lesson-visual figcaption{font:12px/1.7 'Segoe UI',sans-serif;color:var(--muted)}
.waterfall-plot{display:block;width:100%;max-width:500px;margin:12px auto 0;overflow:visible}
.waterfall-bar{fill:var(--graph-primary);fill-opacity:.45}.waterfall-bar.result{fill-opacity:1}.waterfall-bar.deduction{fill:var(--graph-loss);fill-opacity:1}
.waterfall-value{font:600 16px 'Segoe UI',sans-serif;fill:var(--text);font-variant-numeric:tabular-nums}
.waterfall-connector{stroke:var(--muted);stroke-dasharray:3 3;stroke-width:1}
.waterfall-labels{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:8px 0 0;border-top:1px solid var(--graph-grid);padding-top:14px}
.waterfall-labels>div{font-size:12px;line-height:1.5}.waterfall-labels small{font-size:10px;display:block;color:var(--muted);margin-bottom:4px;font-weight:600}
.weight-comparison{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:4px 0}.weight-comparison>div{min-width:0}.weight-comparison b{font-size:13px;margin:12px 0}.weight-comparison p{font-size:12px;line-height:1.5}
.allocation-bar{height:38px;border-radius:7px;overflow:hidden;display:flex;background:var(--graph-surface)}
.allocation-part{display:flex;align-items:center;justify-content:center;font:600 12px 'Segoe UI',sans-serif;color:#fff;overflow:hidden;min-width:0}
.allocation-part.part-0{background:var(--graph-primary)}.allocation-part.part-1{background:var(--graph-secondary)}
[data-theme='dark'] .allocation-part{color:#12241d}
.safety-ruler{background:var(--graph-surface);border-radius:10px;margin:22px 30px;height:145px}.ruler-gap{background:var(--graph-primary)}
.concept-board{container-type:inline-size;margin:20px 0 12px;padding:22px;border:1px solid var(--graph-grid);border-radius:14px;background:var(--graph-surface)}
.concept-anchor{position:relative;display:flex;align-items:center;gap:12px;width:fit-content;margin:0 auto 28px;padding:12px 24px;background:var(--graph-primary);color:var(--card);border-radius:10px;font-size:17px;font-weight:650}
.concept-anchor>.learn-icon{width:23px;height:23px;flex:none}.concept-anchor small{display:block;font-size:11px;font-weight:400;opacity:.85;margin-top:3px}
.concept-anchor:after{content:'';position:absolute;height:28px;width:1px;background:var(--graph-primary);top:100%;left:50%;opacity:.4}
[data-theme='dark'] .concept-anchor{color:#14281f}
.concept-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;position:relative}
.concept-card{position:relative;background:var(--card);border:1px solid var(--graph-grid);border-radius:10px;padding:18px;min-width:0}
.concept-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.concept-card-icon{display:grid;place-items:center;width:36px;height:36px;border-radius:9px;background:var(--graph-surface);color:var(--graph-primary)}
.concept-card-icon>.learn-icon{width:23px;height:23px}.concept-card-index{font:11px 'Segoe UI',sans-serif;letter-spacing:1px;color:var(--muted)}
.concept-card h3{font:650 15px/1.4 'Segoe UI',sans-serif;color:var(--text);margin:0 0 7px;overflow-wrap:anywhere}
.concept-card p,.concept-card li{font:13px/1.65 'Segoe UI',sans-serif;color:var(--muted);margin:0}.concept-card ul{padding-left:16px;margin:0}.concept-card li+li{margin-top:6px}
.board-flow .concept-cards{grid-template-columns:1fr}.board-flow .concept-card{padding:16px 18px 16px 76px}.board-flow .concept-card-top{position:absolute;left:18px;top:18px}.board-flow .concept-card-index{display:none}.board-flow .concept-card+.concept-card:before{content:'↓';position:absolute;left:29px;top:-16px;background:var(--graph-surface);color:var(--graph-primary);font-size:16px;line-height:18px}
.concept-diagram{border:1px solid var(--graph-grid);background:var(--graph-surface);padding:18px 10px}.diagram-node,.diagram-panel{stroke:var(--graph-grid);stroke-width:1}.diagram-icon{color:var(--graph-primary)}.diagram-connector{stroke:var(--graph-primary);stroke-width:1.8}.diagram-track{stroke:var(--graph-grid);stroke-width:5}.diagram-overlap{stroke:var(--graph-primary);fill:var(--graph-primary)}.diagram-overlap.second{stroke:var(--graph-secondary);fill:var(--graph-secondary)}.diagram-deadline{stroke:var(--graph-secondary)}
.compound-curve{border-color:var(--graph-grid);background:var(--graph-surface);padding:20px;border-radius:14px}.compound-curve figcaption{font-weight:650}.compound-svg text{font-family:'Segoe UI',sans-serif}.compound-svg line{stroke:var(--graph-grid);stroke-dasharray:3 5}.curve-net{color:var(--graph-primary);stroke:var(--graph-primary)}.curve-real{color:var(--graph-secondary);stroke:var(--graph-secondary)}
@container(max-width:480px){.plot-wide{display:none}.plot-compact{display:block}}
@container(max-width:400px){.concept-cards{grid-template-columns:1fr}.concept-card{padding:16px}.concept-card-top{margin-bottom:8px}.concept-card p,.concept-card li{font-size:13px}}
@media(max-width:700px){[data-page='lesson'] .lesson-visual h2{font-size:20px;margin-bottom:18px}.plot-frame,.waterfall-frame{padding:14px 8px 12px;border-radius:10px}.plot-topline,.plot-frame .plot-legend{padding:0 6px;font-size:11px}.plot-frame .plot-legend{gap:8px 15px;margin-top:12px}.plot-endpoints{gap:8px}.plot-endpoints .endpoint{padding:12px 10px}.endpoint>span{font-size:11px}.endpoint>strong{font-size:23px;letter-spacing:-.7px}.plot-endpoints .endpoint>small{font-size:10px}.lab-fields{padding:14px;gap:16px}.lab-field>span{font-size:12px}.lab-metrics>div{padding:12px 8px}.lab-metrics strong{font-size:21px}.lab-metrics span{font-size:11px}.waterfall-labels{padding:12px 4px 0;gap:8px}.waterfall-labels>div{font-size:11px}.concept-board{padding:12px}.concept-anchor{padding:12px 16px;font-size:16px}.weight-comparison{grid-template-columns:1fr;gap:0}.concept-diagram{padding:10px 0}.bar-chart .bar-label{font-size:12px}.bar-chart .bar-label b{font-size:20px}}
@media(prefers-reduced-motion:reduce){.lesson-visual *{scroll-behavior:auto;transition:none!important;animation:none!important}}

/* Compact teaching widgets: content determines height; graphics support the explanation. */
.ownership-widget{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:12px 0;container-type:inline-size}
.ownership-card{min-width:0;border:1px solid var(--graph-grid);border-radius:9px;background:var(--graph-surface);padding:16px}
.ownership-card header{display:flex;align-items:center;gap:12px;margin-bottom:12px}.ownership-card header>div{min-width:0}
.ownership-card h3{font:650 17px/1.3 'Segoe UI',sans-serif;margin:0 0 3px;letter-spacing:-.2px}
.ownership-card header p{font:13px/1.5 'Segoe UI',sans-serif;color:var(--muted);margin:0}
.ownership-symbol{width:38px;height:38px;flex:none;display:grid;place-items:center;color:var(--graph-primary)}.ownership-symbol>.learn-icon{width:32px;height:32px}
.share-mosaic{display:grid;grid-template-columns:repeat(3,8px);gap:3px}.share-mosaic i{width:8px;height:8px;border:1px solid var(--graph-primary);border-radius:2px;opacity:.35}.share-mosaic i.owned{background:var(--graph-primary);opacity:1}
.ownership-tag{margin-left:auto;align-self:start;font:600 10px/1.5 'Segoe UI',sans-serif;padding:3px 7px;border-radius:4px;background:var(--card);color:var(--graph-primary);border:1px solid var(--graph-grid)}
.ownership-card:nth-child(2) .ownership-symbol,.ownership-card:nth-child(2) .ownership-tag{color:var(--graph-secondary)}
.ownership-card dl{margin:0;padding-top:10px;border-top:1px solid var(--graph-grid);display:grid;gap:7px}
.ownership-card dl>div{display:grid;grid-template-columns:70px 1fr;gap:8px;font:12px/1.5 'Segoe UI',sans-serif}.ownership-card dt{color:var(--muted)}.ownership-card dd{margin:0;color:var(--text)}
.concept-sequence{margin:12px 0;border:1px solid var(--graph-grid);border-radius:9px;padding:0 14px;background:var(--graph-surface)}
.sequence-row{display:flex;align-items:center;gap:12px;padding:11px 0}.sequence-row+.sequence-row{border-top:1px solid var(--graph-grid)}
.sequence-marker{position:relative;display:grid;place-items:center;flex:none;width:30px;height:30px;border-radius:6px;background:var(--card);color:var(--graph-primary);font:600 12px 'Segoe UI',sans-serif}.sequence-marker .learn-icon{width:20px;height:20px}
.sequence-row h3{font:650 13px/1.4 'Segoe UI',sans-serif;margin:0 0 2px}.sequence-row p{font:12px/1.5 'Segoe UI',sans-serif;margin:0;color:var(--muted)}
.sequence-ladder .sequence-row+.sequence-row .sequence-marker:before{content:'↓';position:absolute;bottom:calc(100% + 1px);font-size:11px;color:var(--muted)}
.overlap-widget{margin:12px 0;border:1px solid var(--graph-grid);border-radius:9px;background:var(--graph-surface);padding:14px}
.overlap-path{display:flex;justify-content:center;align-items:center;gap:12px;font:600 13px/1.5 'Segoe UI',sans-serif}.overlap-path>span,.overlap-path>strong{display:flex;align-items:center;gap:7px;padding:10px;border:1px solid var(--graph-grid);background:var(--card);border-radius:6px}.overlap-path>strong{color:var(--graph-primary)}.overlap-path .learn-icon{width:19px;height:19px}.overlap-path>b{color:var(--muted)}
.overlap-widget>p{text-align:center;font-size:13px;margin:10px 0}.overlap-reading{display:flex;gap:18px;padding-top:10px;border-top:1px solid var(--graph-grid);font:12px/1.5 'Segoe UI',sans-serif;color:var(--muted)}.overlap-reading>span{flex:1}.overlap-reading b{display:block;color:var(--text)}
.concept-board{padding:0;margin:12px 0;border:0;background:none}
.concept-anchor{display:flex;gap:7px;border:0;border-bottom:1px solid var(--graph-grid);background:none;color:var(--muted);padding:0 0 8px;margin:0 0 8px;width:100%;border-radius:0;font-size:12px;font-weight:600}
.concept-anchor>.learn-icon{width:17px;height:17px}.concept-anchor span{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.concept-anchor small{display:inline;font-size:11px;margin:0;font-weight:400;opacity:1}.concept-anchor:after{display:none}[data-theme='dark'] .concept-anchor{color:var(--muted)}
.concept-cards{gap:8px}.concept-card{padding:11px 12px 11px 48px;background:var(--graph-surface);border-radius:7px}
.concept-card-top{position:absolute;left:11px;top:11px;margin:0}.concept-card-icon{width:26px;height:26px;border-radius:5px;background:var(--card)}.concept-card-icon>.learn-icon{width:18px;height:18px}.concept-card-index{display:none}
.concept-card h3{font-size:13px;margin:0 0 3px;line-height:1.45}.concept-card p,.concept-card li{font-size:12px;line-height:1.55}.concept-card li+li{margin-top:3px}
.board-flow .concept-card{padding:11px 12px 11px 48px}.board-flow .concept-card-top{left:11px;top:11px}.board-flow .concept-card+.concept-card:before{left:20px;top:-12px;font-size:12px;line-height:13px}
[data-page='lesson'] .lesson-visual h2{font-size:18px;line-height:1.4;margin:6px 0 10px;letter-spacing:-.3px}
.plot-frame,.waterfall-frame{padding:12px 12px 9px;margin:10px 0 6px;border-radius:9px}
.academy-plot{max-width:680px;margin:3px auto 0}.plot-frame .plot-legend{margin:7px 0 0;gap:6px 18px}.plot-xlabel{font-size:11px}.plot-selected{padding:2px 6px;font-size:11px}
.plot-endpoints{gap:0;border:1px solid var(--graph-grid);border-radius:7px;margin:8px 0;background:var(--graph-surface);overflow:hidden}
.plot-endpoints .endpoint{display:grid;grid-template-columns:1fr auto;align-items:center;gap:3px 12px;padding:9px 12px;background:none;border:0;border-radius:0}
.plot-endpoints .endpoint+.endpoint{border-left:1px solid var(--graph-grid)}.endpoint>span{font-size:12px;line-height:1.4}.endpoint>strong{font-size:22px;letter-spacing:-.5px;margin:0;grid-row:1 / span 2;grid-column:2}.plot-endpoints .endpoint>small{font-size:10px}
.chart-values{margin-top:8px;padding-top:0}.chart-values summary{padding:6px 0;min-height:30px}.chart-caption{font-size:12px;line-height:1.6;margin-top:8px}
.lab-workspace{display:grid;grid-template-columns:minmax(150px,210px) minmax(0,1fr);gap:16px;align-items:start;container-type:inline-size}
.lab-workspace .lab-fields{display:flex;flex-direction:column;gap:14px;padding:12px;margin:10px 0;border-radius:8px}.lab-workspace .lab-result{min-width:0}
.lab-field>span{font-size:12px;line-height:1.4;flex-wrap:wrap}.lab-field output{font-size:12px;padding:2px 5px}.lab-field input{min-height:28px}.lab-field{gap:5px}
.predict-prompt{background:none;border:0;padding:0;margin:6px 0 8px;font-size:12px;line-height:1.6;gap:7px}.predict-prompt .learn-icon{width:16px;height:16px}
.lab-metrics{margin-top:10px;border-radius:7px}.lab-metrics>div{padding:9px 10px}.lab-metrics strong{font-size:21px;letter-spacing:-.5px}.lab-metrics span{font-size:11px;margin-top:4px}
.waterfall-plot{max-width:320px;margin:4px auto 0}.waterfall-labels{margin-top:2px;padding-top:7px;gap:10px}.waterfall-labels small{display:none}.waterfall-labels>div{font-size:11px}
.lab-note{margin-top:10px}.learning-lab{margin-bottom:10px}.yield-lesson{margin-top:12px;padding-top:12px}.curve-controls{margin:8px 0}.yield-chart{max-width:680px}
.bar-chart .bar-row{margin-bottom:12px}.bar-chart .bar-label{margin-bottom:5px}.bar-chart .bar-label b{font-size:19px}.bar-track{height:15px}
.valuation-equation{margin:12px 0;gap:8px}.valuation-equation>div{padding:10px 8px}.valuation-equation strong{font-size:27px;margin-top:2px}.valuation-equation small{min-height:0}
.compound-curve{padding:12px;border-radius:9px}.compound-svg{max-width:600px;margin:7px auto 0}.compound-curve figcaption{font-size:14px;margin-bottom:7px}
@container(max-width:480px){.ownership-card header{gap:8px}.ownership-tag{display:none}}
@container(max-width:400px){.concept-card{padding:10px 10px 10px 45px}.concept-card p,.concept-card li{font-size:12px}}
@media(max-width:1150px){.lab-workspace{grid-template-columns:1fr;gap:0}.lab-workspace .lab-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}}
@media(max-width:700px){.ownership-widget{grid-template-columns:1fr;gap:8px}.ownership-card{padding:12px}.ownership-card header{margin-bottom:9px}.ownership-card h3{font-size:16px}.ownership-card dl{padding-top:8px}.ownership-tag{display:block}.concept-cards{gap:6px}.plot-frame,.waterfall-frame{padding:10px 6px 8px}.plot-endpoints .endpoint{display:block;padding:8px 10px}.endpoint>strong{font-size:21px;margin:3px 0}.endpoint>span{font-size:11px}.lab-workspace .lab-fields{padding:10px;margin:8px 0;gap:12px}.lab-field>span{font-size:11px}.lab-field output{font-size:11px}.lab-metrics>div{padding:8px}.lab-metrics strong{font-size:20px}.overlap-widget{padding:10px}.overlap-path{gap:5px;font-size:11px}.overlap-path>span,.overlap-path>strong{display:flex;flex-direction:column;text-align:center;padding:7px 5px;gap:4px}.overlap-reading{gap:12px;font-size:11px}.overlap-widget>p{font-size:12px}.concept-anchor{padding:0 0 7px;font-size:12px}[data-page='lesson'] .lesson-visual h2{font-size:18px;margin-bottom:9px}.chart-values summary{min-height:36px}.waterfall-plot{max-width:280px}}

/* Price and total return: a compact equation, with source values kept in the table. */
.return-diagram{max-width:560px;margin:12px 0;background:var(--graph-surface);border:1px solid var(--graph-grid);border-radius:8px;padding:13px 15px}
.return-start{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--muted);padding-bottom:11px;margin-bottom:11px;border-bottom:1px solid var(--graph-grid)}
.return-start strong{font-size:16px;color:var(--text);margin-left:5px;font-variant-numeric:tabular-nums}
.return-equation{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr) auto minmax(0,1fr);align-items:start;gap:10px}
.return-part{min-width:0}.return-part>span{display:block;font-size:12px;color:var(--muted);line-height:1.4}.return-part>strong{display:block;font:32px/1.3 Georgia,serif;margin:3px 0;color:var(--text);font-variant-numeric:tabular-nums}
.return-part small{display:block;font-size:11px;color:var(--muted);line-height:1.5}.return-part small b{display:block;color:var(--text);font-size:12px}.return-total>strong,.return-total small b{color:var(--graph-primary)}.return-sign{font-size:20px;color:var(--muted);padding-top:23px}.return-cash>strong{color:var(--graph-secondary)}
@media(max-width:700px){.return-diagram{padding:11px 10px}.return-equation{gap:6px}.return-part>span{font-size:11px;min-height:31px}.return-part>strong{font-size:28px}.return-sign{padding-top:34px;font-size:18px}.return-part small{font-size:10px}.return-start{gap:9px;font-size:11px}}

.lesson-video .lesson-youtube{display:block;width:100%;aspect-ratio:16/9;height:auto;border:0;border-radius:10px;margin:8px 0 0;background:#171c1b}

.lesson-video-cover{position:relative;display:block;width:100%;padding:0;margin:8px 0 0;border:0;border-radius:10px;overflow:hidden;background:#171c1b;cursor:pointer;aspect-ratio:16/9;text-align:left}.lesson-video-cover img{display:block;width:100%;height:100%;object-fit:contain}.lesson-video-play{position:absolute;right:16px;bottom:16px;display:flex;align-items:center;gap:8px;padding:10px 15px;border:1px solid #b5c6a588;border-radius:24px;background:#182a22ed;color:#f6f3e9;font:600 13px system-ui,sans-serif;box-shadow:0 2px 8px #0003}.lesson-video-cover:hover .lesson-video-play{background:#245b46}.lesson-video-cover:focus-visible{outline:3px solid var(--accent);outline-offset:4px}@media(max-width:600px){.lesson-video-play{right:9px;bottom:9px;padding:7px 11px;font-size:11px}}