@font-face{font-family:"Press Start 2P";font-style:normal;font-display:swap;font-weight:400;src:url(/assets/press-start-2p-latin-400-normal-_wFEWmAB.woff2)format("woff2"),url(/assets/press-start-2p-latin-400-normal-KLytu4cr.woff)format("woff")}@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-border-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.collapse{visibility:collapse}.visible{visibility:visible}.fixed{position:fixed}.relative{position:relative}.sticky{position:sticky}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.block{display:block}.contents{display:contents}.hidden{display:none}.table{display:table}.border{border-style:var(--tw-border-style);border-width:1px}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}}:root{--ink:#08252c;--night:#062e35;--teal:#137a6d;--mint:#ddf3e7;--cream:#f8f3e8;--paper:#fffdf8;--coral:#ee7157;--muted:#516a70;--line:#d5dfdc}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);margin:0;font-family:Arial,Helvetica,sans-serif;font-size:17px;line-height:1.6}a{color:inherit;text-decoration:none}button,input{font:inherit}.site-header{border-bottom:1px solid var(--line);z-index:20;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffdf8f7;justify-content:space-between;align-items:center;min-height:82px;padding:0 clamp(20px,7vw,110px);display:flex;position:sticky;top:0}.brand,.footer-brand{align-items:center;gap:11px;font-size:19px;font-weight:800;display:flex}.brand-mark{background:var(--coral);color:#fff;letter-spacing:.06em;border-radius:50%;justify-content:center;align-items:center;width:39px;height:39px;font-size:13px;display:inline-flex}nav{gap:25px;display:flex}nav a{color:#36565c;font-size:14px;font-weight:800}nav a:hover{color:var(--teal)}.hero{background:radial-gradient(circle at 77% 20%,#dff4e9 0,#dff4e999 18%,transparent 42%),linear-gradient(110deg,var(--paper),var(--cream));min-height:610px;padding:clamp(75px,10vw,140px) clamp(20px,7vw,110px) 90px}.hero>*{max-width:820px}.eyebrow{color:var(--teal);letter-spacing:.15em;text-transform:uppercase;margin:0 0 21px;font-size:10px;font-weight:900}.hero h1,.section h2{letter-spacing:-.055em;margin:0;font-family:Georgia,Times New Roman,serif;font-size:clamp(50px,6vw,82px);font-weight:400;line-height:.96}.hero h1 em,.section h2 em{color:var(--teal)}.hero-copy{color:var(--muted);margin:28px 0 0;font-size:18px;line-height:1.65}.hero-copy strong{color:var(--ink)}.hero-actions{gap:12px;margin-top:34px;display:flex}.button{border:1px solid #0000;border-radius:3px;padding:16px 20px;font-size:12px;font-weight:800;display:inline-flex}.primary{background:var(--night);color:#fff}.secondary{border-color:#afbebc}.hero-promise{border-top:1px solid var(--line);grid-template-columns:auto 1fr auto 1fr;gap:12px;margin-top:56px;padding-top:20px;display:grid}.hero-promise>span{color:var(--coral);font-family:Georgia,serif;font-size:22px}.hero-promise p{color:#526a6e;margin:0;font-size:12px;line-height:1.55}.hero-promise strong{color:var(--ink)}.section{padding:clamp(80px,10vw,135px) clamp(20px,7vw,110px)}.section-intro{grid-template-columns:1.1fr .8fr;align-items:end;gap:34px;display:grid}.section-intro h2{font-size:clamp(46px,5vw,70px)}.section-intro>p{color:var(--muted);margin:0 0 4px;font-size:16px;line-height:1.72}.section-intro.dark>p{color:#c1d5d3}.section-intro.dark .eyebrow{color:#91c9bf}.section-intro.dark h2{color:#fff}.section-intro.dark h2 em{color:#87d3c4}.assessment-grid{border:1px solid var(--line);grid-template-columns:1fr 1fr;margin-top:55px;display:grid}.assessment-grid article{border-bottom:1px solid var(--line);grid-template-columns:48px 1fr;gap:15px;padding:25px;display:grid}.assessment-grid article:nth-child(odd){border-right:1px solid var(--line)}.assessment-grid article:nth-last-child(-n+2){border-bottom:0}.assessment-grid span{color:var(--coral);font-family:Georgia,serif;font-size:23px}.assessment-grid h3{margin:0;font-family:Georgia,serif;font-size:24px;font-weight:400}.assessment-grid p{color:var(--muted);margin:8px 0 0;font-size:13px;line-height:1.6}.safety{background:var(--mint);border-left:4px solid var(--teal);grid-template-columns:180px 1fr;gap:25px;margin-top:30px;padding:25px;display:grid}.safety strong{letter-spacing:.1em;text-transform:uppercase;font-size:11px}.safety p{margin:0;font-size:14px;line-height:1.65}.patient-lab{background:#f4eee2}.simulator{background:#fff;border:1px solid #cbd8d5;margin-top:55px;box-shadow:0 20px 55px #042b321a}.sim-toolbar{background:var(--night);color:#fff;justify-content:space-between;align-items:center;padding:20px 26px;display:flex}.sim-toolbar>div{gap:24px;display:flex}.sim-toolbar span,.sim-toolbar strong{font-size:14px}.sim-toolbar button{color:var(--night);cursor:pointer;background:#87d3c4;border:0;padding:11px 15px;font-size:14px;font-weight:800}.patient-chart{border-bottom:1px solid var(--line);grid-template-columns:2fr repeat(3,1fr);display:grid}.patient-id,.vital{padding:24px}.patient-id{border-right:1px solid var(--line)}.patient-id>span{color:var(--coral);letter-spacing:.1em;text-transform:uppercase;font-size:12px;font-weight:900}.patient-id h3{margin:4px 0;font-family:Georgia,serif;font-size:32px;font-weight:400}.patient-id p{color:var(--muted);margin:0;font-size:15px}.vital{border-right:1px solid var(--line);text-align:center;display:grid}.vital:last-child{border:0}.vital>span{color:var(--teal);font-size:14px;font-weight:900}.vital strong{font-family:Georgia,serif;font-size:34px}.vital small{color:var(--muted);font-size:13px}.presentation{border-left:5px solid var(--coral);background:#fff7e9;margin:28px;padding:22px}.presentation strong{letter-spacing:.08em;text-transform:uppercase;font-size:14px}.presentation p{margin:7px 0 0;font-size:17px;line-height:1.7}.sim-question{padding:0 28px 32px}.sim-progress{color:var(--teal);letter-spacing:.08em;text-transform:uppercase;font-size:14px;font-weight:900}.sim-progress i{background:var(--coral);height:5px;margin-top:12px;display:block}.sim-question>h3{margin:25px 0;font-family:Georgia,serif;font-size:30px;font-weight:400;line-height:1.25}.sim-choices{gap:11px;display:grid}.sim-choices button{color:var(--ink);cursor:pointer;text-align:left;background:#fbfaf6;border:2px solid #d6dfdc;grid-template-columns:34px 1fr;align-items:flex-start;gap:15px;padding:18px;display:grid}.sim-choices button:hover:not(:disabled){border-color:var(--teal);background:#eef8f5}.sim-choices b{background:#e7efed;border-radius:50%;justify-content:center;align-items:center;height:31px;font-size:14px;display:flex}.sim-choices span{font-size:16px;line-height:1.65}.sim-choices .correct,.sim-choices .reveal{background:#dcf4e4;border-color:#318652}.sim-choices .incorrect{border-color:var(--coral);background:#fff0ec}.sim-hint{margin-top:18px}.sim-hint button{color:var(--teal);cursor:pointer;background:0 0;border:0;font-size:15px;font-weight:900}.sim-hint p{background:#fff8e9;border-left:4px solid #dca43d;padding:16px;font-size:16px}.sim-feedback{border-left:5px solid;margin-top:20px;padding:20px}.sim-feedback.right{background:#dcf4e4;border-color:#318652}.sim-feedback.wrong{border-color:var(--coral);background:#fff0ec}.sim-feedback strong{font-size:18px}.sim-feedback p{margin:5px 0 15px;font-size:16px}.sim-feedback button{background:var(--night);color:#fff;cursor:pointer;border:0;padding:13px 17px;font-size:15px;font-weight:800}.ecg-section{background:#fff}.study-steps{border:1px solid var(--line);grid-template-columns:repeat(5,1fr);margin-top:52px;display:grid}.study-steps article{border-right:1px solid var(--line);padding:22px}.study-steps article:last-child{border:0}.study-steps span{color:var(--coral);font-family:Georgia,serif;font-size:21px}.study-steps h3{margin:8px 0;font-family:Georgia,serif;font-size:23px;font-weight:400;line-height:1.2}.study-steps p{color:var(--muted);margin:0;font-size:15px;line-height:1.6}.conduction-card{background:#f3eee4;grid-template-columns:1.1fr 1fr;gap:40px;margin-top:42px;padding:30px;display:grid}.conduction-card img{object-fit:contain;background:#fff;width:100%;height:100%;max-height:430px}.conduction-card ol{color:#3e5a60;padding-left:20px;font-size:16px;line-height:1.7}.conduction-card li{margin:10px 0}.rhythm-lab,.image-lab{grid-template-columns:280px 1fr;margin-top:45px;display:grid}.rhythm-tabs,.image-tabs{align-content:start;display:grid}.rhythm-tabs button,.image-tabs button{border:0;border-bottom:1px solid var(--line);color:var(--ink);cursor:pointer;text-align:left;background:#f8f6ef;padding:16px;font-size:15px}.rhythm-tabs button:hover,.rhythm-tabs button.active,.image-tabs button:hover,.image-tabs button.active{background:var(--teal);color:#fff}.rhythm-detail{border:1px solid var(--line);padding:30px}.rhythm-detail>span,.image-detail>div>span{color:var(--coral);letter-spacing:.1em;text-transform:uppercase;font-size:12px;font-weight:900}.rhythm-detail h3,.image-detail h3{margin:4px 0 20px;font-family:Georgia,serif;font-size:35px;font-weight:400}.rhythm-detail img{border:1px solid var(--line);object-fit:contain;background:#fff;width:100%;max-height:390px}.rhythm-detail>div{background:#f5f4ee;margin-top:14px;padding:18px}.rhythm-detail>div strong,.image-detail strong{letter-spacing:.08em;text-transform:uppercase;font-size:13px}.rhythm-detail p,.image-detail p{color:var(--muted);margin:6px 0 0;font-size:16px;line-height:1.65}.study-quiz{border-top:5px solid var(--teal);background:#eaf5f2;margin-top:45px;padding:clamp(24px,4vw,38px)}.study-quiz-head{justify-content:space-between;display:flex}.study-quiz-head>div{gap:18px;display:flex}.study-quiz-head span,.study-quiz-head strong,.study-quiz-head small{font-size:14px;font-weight:900}.study-quiz-head span{color:var(--teal);letter-spacing:.08em;text-transform:uppercase}.study-quiz>h3{margin:25px 0;font-family:Georgia,serif;font-size:29px;font-weight:400;line-height:1.3}.study-quiz-choices{gap:10px;display:grid}.study-quiz-choices button{color:var(--ink);cursor:pointer;text-align:left;background:#fff;border:2px solid #cbdad6;grid-template-columns:32px 1fr;align-items:flex-start;gap:14px;padding:17px;display:grid}.study-quiz-choices button:hover:not(:disabled){border-color:var(--teal)}.study-quiz-choices b{background:#e8efed;border-radius:50%;justify-content:center;align-items:center;height:28px;font-size:13px;display:flex}.study-quiz-choices span{font-size:16px;line-height:1.6}.study-quiz-choices .correct,.study-quiz-choices .reveal{background:#dcf4e4;border-color:#318652}.study-quiz-choices .incorrect{border-color:var(--coral);background:#fff0ec}.cxr-section{color:#fff;background:#062e35}.abcde{grid-template-columns:repeat(5,1fr);margin-top:50px;display:grid}.abcde article{background:#124750;border-right:1px solid #ffffff29;gap:14px;padding:20px;display:flex}.abcde b{color:var(--night);background:#86d2c3;border-radius:50%;flex:none;justify-content:center;align-items:center;width:35px;height:35px;font-family:Georgia,serif;font-size:20px;display:flex}.abcde strong{font-size:15px}.abcde p{color:#c5d8d5;margin:3px 0 0;font-size:14px;line-height:1.5}.pattern-family{grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px;display:grid}.pattern-family article{color:var(--ink);background:#fff;padding:25px}.pattern-family span{color:var(--coral);letter-spacing:.1em;text-transform:uppercase;font-size:12px;font-weight:900}.pattern-family h3{margin:7px 0;font-family:Georgia,serif;font-size:27px;font-weight:400}.pattern-family p{color:var(--muted);margin:0;font-size:15px;line-height:1.6}.image-lab{margin-top:45px}.image-tabs button{color:#d5e4e2;background:#0c3d45;border-color:#ffffff26}.image-detail{color:var(--ink);background:#fff;grid-template-columns:1.15fr 1fr;gap:30px;padding:28px;display:grid}.image-detail>img{object-fit:contain;background:#111;width:100%;height:620px}.image-detail>div{align-self:center}.shift-rule{grid-template-columns:1fr 1fr;gap:14px;margin-top:30px;display:grid}.shift-rule article{background:#124750;padding:25px}.shift-rule span{color:#8fd0c4;text-transform:uppercase;font-size:13px;font-weight:900;display:block}.shift-rule strong{margin:5px 0;font-family:Georgia,serif;font-size:32px;font-weight:400;display:block}.shift-rule p{color:#c5d8d5;margin:0;font-size:15px}.cxr-section .study-quiz{color:var(--ink)}.disease-section,.phrases-section{background:var(--night);color:#fff}.library-tools{margin-top:50px}.library-tools input,.terms-head input{color:var(--ink);background:#fff;border:0;border-radius:3px;outline:0;width:min(100%,480px);padding:17px 18px;font-size:14px}.filter-row{flex-wrap:wrap;gap:8px;margin-top:18px;display:flex}.filter-row button{color:#c7d8d6;cursor:pointer;background:0 0;border:1px solid #ffffff3d;border-radius:99px;padding:9px 13px;font-size:11px}.filter-row button.active,.filter-row button:hover{color:var(--night);background:#7ed1c1;border-color:#7ed1c1}.result-count{color:#8fb6b2;margin:23px 0 13px;font-size:11px}.disease-grid{gap:14px;display:grid}.disease-card{color:var(--ink);background:#fff}.disease-card>button{color:inherit;cursor:pointer;text-align:left;background:0 0;border:0;grid-template-columns:150px 1.2fr 1fr 2fr auto;align-items:center;gap:18px;width:100%;padding:22px 25px;display:grid}.disease-group{color:var(--teal);letter-spacing:.11em;text-transform:uppercase;font-size:9px;font-weight:900}.disease-card h3{margin:0;font-family:Georgia,serif;font-size:25px;font-weight:400}.pattern{color:var(--muted);margin:0;font-size:12px;line-height:1.5}.giveaway{border-left:1px solid var(--line);padding-left:20px}.giveaway strong,.disease-details strong{letter-spacing:.1em;text-transform:uppercase;font-size:9px}.giveaway p{margin:5px 0 0;font-size:12px;line-height:1.5}.expand{color:var(--coral);white-space:nowrap;font-size:11px;font-weight:800}.disease-card.open{box-shadow:0 0 0 2px #7ac9bb}.disease-details{border-top:1px solid var(--line);padding:28px}.profile-facts{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.profile-facts>div{background:#f8f6ef;padding:19px}.disease-details p{color:#425f64;margin:8px 0 0;font-size:13px;line-height:1.6}.guided-assessment{background:#e9f6f2;margin-top:25px;padding:clamp(22px,4vw,36px)}.quiz-top>div:first-child{justify-content:space-between;display:flex}.quiz-top span,.quiz-top strong{letter-spacing:.1em;text-transform:uppercase;font-size:10px;font-weight:900}.quiz-top span{color:var(--teal)}.progress{background:#c8dfd9;height:4px;margin-top:12px}.progress i{background:var(--coral);height:100%;transition:width .25s;display:block}.guided-assessment h4{margin:25px 0 18px;font-family:Georgia,serif;font-size:27px;font-weight:400;line-height:1.2}.quiz-choices{gap:9px;display:grid}.quiz-choices button{color:var(--ink);cursor:pointer;text-align:left;background:#fff;border:1px solid #c8d9d5;grid-template-columns:28px 1fr;align-items:flex-start;gap:13px;padding:14px;display:grid}.quiz-choices button:hover:not(:disabled){border-color:var(--teal);transform:translate(3px)}.quiz-choices button b{background:#eef1ed;border-radius:50%;justify-content:center;align-items:center;height:25px;font-size:10px;display:flex}.quiz-choices button span{font-size:12px;line-height:1.55}.quiz-choices button.correct,.quiz-choices button.reveal{background:#d8f2df;border-color:#3b9d62}.quiz-choices button.incorrect{border-color:var(--coral);background:#fff0ec}.quiz-help{margin-top:15px}.quiz-help button{color:var(--teal);cursor:pointer;background:0 0;border:0;padding:0;font-size:11px;font-weight:900}.quiz-help p{color:#5e5541;background:#fff8e9;border-left:3px solid #e2aa43;padding:12px}.feedback{border-left:4px solid;margin-top:18px;padding:16px}.feedback.good{background:#d8f2df;border-color:#3b9d62}.feedback.retry{border-color:var(--coral);background:#fff0ec}.feedback>strong{letter-spacing:0;text-transform:none;font-size:13px}.feedback p{margin:7px 0 13px}.feedback button{background:var(--night);color:#fff;cursor:pointer;border:0;padding:12px 15px;font-size:11px;font-weight:800}.quiz-preface{background:#ffffffb8;border:1px solid #abd8d0;border-radius:16px;align-items:center;gap:16px;margin-bottom:22px;padding:14px 16px;display:flex}.quiz-preface strong{color:var(--teal);white-space:nowrap;font-size:14px}.quiz-preface p{margin:0;font-size:15px;line-height:1.5}html[data-theme=dark] .quiz-preface{border-color:var(--dark-border-strong);background:#193540}html[data-theme=dark] .quiz-preface strong{color:var(--dark-mint)}html[data-theme=dark] .quiz-preface p{color:var(--dark-text-2)}.dialogue-layout{grid-template-columns:1.25fr .65fr;gap:40px;margin-top:55px;display:grid}.conversation{gap:12px;display:grid}.bubble{max-width:84%;padding:17px 19px}.bubble strong{letter-spacing:.12em;text-transform:uppercase;font-size:9px}.bubble p{margin:7px 0 0;font-size:14px;line-height:1.6}.bubble.rt{background:var(--mint);border-left:3px solid var(--teal)}.bubble.patient{background:#f4eee2;margin-left:auto}.why-panel{background:var(--cream);align-self:start;padding:26px;position:sticky;top:100px}.why-panel ol{color:var(--muted);padding-left:18px;font-size:13px;line-height:1.6}.why-panel li{margin:13px 0}.why-panel strong{color:var(--ink)}.phrase-grid{grid-template-columns:1fr 1fr;gap:13px;margin-top:50px;display:grid}.phrase-grid article{background:#124750;border:1px solid #ffffff21;padding:23px}.phrase-grid span{color:#8bc9bd;letter-spacing:.12em;text-transform:uppercase;font-size:9px;font-weight:900}.phrase-grid p{margin:12px 0 0;font-family:Georgia,serif;font-size:20px;line-height:1.35}.terms-head{justify-content:space-between;align-items:end;gap:30px;display:flex}.terms-head h2{font-size:clamp(46px,5vw,70px)}.terms-head input{border:1px solid var(--line)}.term-grid{border-left:1px solid var(--line);border-top:1px solid var(--line);grid-template-columns:repeat(3,1fr);margin-top:48px;display:grid}.term-grid article{border-bottom:1px solid var(--line);border-right:1px solid var(--line);padding:22px}.term-grid h3{margin:0;font-family:Georgia,serif;font-size:21px;font-weight:400}.term-grid p{color:var(--muted);margin:8px 0 0;font-size:12px;line-height:1.55}footer{color:#c1d2d1;background:#041f25;justify-content:space-between;align-items:center;gap:30px;padding:35px clamp(20px,7vw,110px);display:flex}.footer-brand div{display:grid}.footer-brand span{font-size:10px}footer>p{text-align:center;font-size:10px}footer>a{font-size:11px;font-weight:800}.defined-term{border-bottom:2px dotted var(--teal);cursor:help;display:inline;position:relative}.defined-term:hover,.defined-term:focus{background:#fff1bf;outline:2px solid #0000}.defined-term:after{color:#fff;content:attr(data-definition);opacity:0;pointer-events:none;text-align:left;text-transform:none;visibility:hidden;z-index:50;background:#062e35;border-radius:5px;width:max-content;min-width:230px;max-width:330px;padding:13px 15px;font-family:Arial,Helvetica,sans-serif;font-size:15px;font-style:normal;font-weight:400;line-height:1.45;transition:all .15s;position:absolute;bottom:calc(100% + 10px);left:50%;transform:translate(-50%,5px)}.defined-term:before{content:"";opacity:0;visibility:hidden;z-index:51;border:7px solid #0000;border-top-color:#062e35;position:absolute;bottom:calc(100% - 4px);left:50%;transform:translate(-50%)}.defined-term:hover:after,.defined-term:focus:after,.defined-term:hover:before,.defined-term:focus:before{opacity:1;visibility:visible;transform:translate(-50%)}.defined-term:hover:before,.defined-term:focus:before{transform:translate(-50%)}.eyebrow,.disease-group,.giveaway strong,.disease-details strong,.scenario strong,.question strong,.answer-title{font-size:12px}.section-intro>p,.hero-copy{font-size:18px}.assessment-grid p,.safety p,.pattern,.giveaway p,.disease-details p,.quiz-choices button span,.guided-assessment p,.bubble p,.why-panel ol,.term-grid p{font-size:16px}.filter-row button,.result-count,.expand,.quiz-help button,.feedback button{font-size:14px}.profile-facts>div{padding:23px}.term-grid h3{font-size:24px}footer>p,footer>a,.footer-brand span{font-size:13px}:root{--aero-sky:#62c9f5;--aero-blue:#208dd1;--aero-cyan:#68e2dd;--aero-green:#6dcf54;--aero-leaf:#22a85d;--aero-glass:#ffffffc7;--aero-shadow:0 18px 45px #105c772e;--surface:#fff;--surface-soft:#f4fbff;--text:#082f42}html[data-theme=dark]{--ink:#e9fbff;--night:#061e2b;--teal:#5ee1d3;--mint:#123d43;--cream:#152f3a;--paper:#081c29;--coral:#ff927d;--muted:#b9d5dc;--line:#345764;--aero-glass:#0c2835d1;--aero-shadow:0 18px 50px #00000059;--surface:#102b38;--surface-soft:#0d2532;--text:#edfaff;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}body{color:var(--ink);background:linear-gradient(#dff6ff 0,#f7fdff 24%,#eaf8ee 100%);transition:background .25s,color .25s}html[data-theme=dark] body{background:radial-gradient(circle at 18% 5%,#164b61 0,#0000 35%),linear-gradient(#071b27,#0b2630 55%,#0d2c27)}.site-header{background:var(--aero-glass);border:1px solid #ffffffb3;border-radius:0 0 28px 28px;gap:22px;box-shadow:0 8px 28px #1d729129}.brand-mark{background:linear-gradient(145deg,#86ee74,#20aa63);border:2px solid #fffc;box-shadow:inset 0 2px 5px #ffffffa6,0 4px 12px #15804947}.theme-toggle{color:#164b64;cursor:pointer;background:linear-gradient(#fffffff5,#cdf1ffe6);border:1px solid #238eba4d;border-radius:999px;flex:none;align-items:center;gap:7px;padding:9px 13px;display:flex;box-shadow:inset 0 1px 1px #fff,0 4px 12px #1e72952e}.theme-toggle span{font-size:20px;line-height:1}.theme-toggle b{font-size:13px}html[data-theme=dark] .theme-toggle{color:#e8fbff;background:linear-gradient(#1d4c5c,#123643);border-color:#42707e}.hero{box-shadow:var(--aero-shadow);isolation:isolate;background:radial-gradient(circle at 84% 24%,#fffffff2 0 4%,#ffffff52 5% 10%,#0000 11%),radial-gradient(circle at 76% 42%,#ffffff85,#0000 20%),linear-gradient(#69cbf4 0,#b8ecff 59%,#8cdf70 60%,#4fc25a 76%,#f7fff8 100%);border-radius:0 0 56px 56px;position:relative;overflow:hidden}.hero:before,.hero:after{content:"";z-index:-1;background:#ffffff52;border:2px solid #ffffff80;border-radius:50%;position:absolute}.hero:before{width:190px;height:190px;top:19%;right:8%}.hero:after{width:72px;height:72px;top:13%;right:24%}.hero-copy{background:#ffffffb8;border:1px solid #ffffffbf;border-radius:22px;padding:18px 21px;box-shadow:0 10px 24px #22799a1f}.hero h1{color:#073749;text-shadow:0 2px #ffffff80}.hero h1 em{color:#057d80}.hero .eyebrow{color:#075d76}.hero-promise{background:#ffffffb0;border:1px solid #ffffffb8;border-radius:24px;padding:20px}.button{border-radius:999px;box-shadow:inset 0 1px 1px #ffffff59,0 8px 16px #104d652e}.primary{background:linear-gradient(#168fd1,#0874b0)}.secondary{background:#ffffffd1}html[data-theme=dark] .hero{background:radial-gradient(circle at 80% 20%,#54dadf2e,#0000 18%),linear-gradient(#103c53 0,#195a68 59%,#225f42 60%,#143926 80%,#081c29 100%)}html[data-theme=dark] .hero h1{color:#effcff}html[data-theme=dark] .hero-copy,html[data-theme=dark] .hero-promise{background:#061e2bbf;border-color:#79dedf3b}.section{background:var(--aero-glass);box-shadow:var(--aero-shadow);border:1px solid #ffffffb8;border-radius:42px;margin:24px clamp(12px,2.5vw,38px);overflow:visible}.patient-lab,.ecg-section,.assessment-section,.dialogue-section,.terms-section{background:var(--aero-glass)}.disease-section,.phrases-section,.cxr-section{background:linear-gradient(150deg,#086b8f,#087c79 46%,#19995c);border-color:#ffffff47}.simulator,.disease-card,.rhythm-detail,.image-detail,.study-quiz,.conduction-card,.why-panel,.comparison-table,.term-grid,.assessment-grid{border-radius:26px;overflow:hidden;box-shadow:0 12px 30px #12647e1f}.sim-toolbar{background:linear-gradient(90deg,#0b83ba,#08a778);border-radius:25px 25px 0 0}.sim-toolbar button,.feedback button,.sim-feedback button{border-radius:999px}.patient-chart,.vital,.patient-id{border-color:var(--line)}.presentation,.safety,.rt-note,.bubble,.phrase-grid article,.profile-facts>div,.guided-assessment,.rhythm-detail>div,.shift-rule article,.abcde article,.pattern-family article,.term-grid article{border-radius:18px}.sim-choices button,.study-quiz-choices button,.quiz-choices button{border-radius:17px;transition:transform .18s,box-shadow .18s,border-color .18s}.sim-choices button:hover:not(:disabled),.study-quiz-choices button:hover:not(:disabled),.quiz-choices button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 18px #13788c24}.simulator,.disease-card,.assessment-grid,.guided-assessment{overflow:visible}.definition-note{background:linear-gradient(120deg,#dff8ff,#e8fadd);border:1px solid #a8ddd2;border-radius:999px;align-items:center;gap:16px;width:fit-content;margin-top:34px;padding:13px 20px;display:flex}.definition-note span{color:#fff;letter-spacing:.08em;text-transform:uppercase;background:linear-gradient(#168fd1,#0874b0);border-radius:999px;padding:7px 11px;font-size:12px;font-weight:900}.definition-note p{color:#315b67;margin:0;font-size:15px}html[data-theme=dark] .definition-note{background:linear-gradient(120deg,#153d4b,#1b4337);border-color:#386976}.study-steps{border-radius:25px;overflow:hidden}.study-steps article{background:var(--surface)}.conduction-card{background:linear-gradient(145deg,#e9fafff0,#e2f9e0eb)}.conduction-card img,.rhythm-detail img,.image-detail>img{border-radius:20px}.rhythm-tabs button,.image-tabs button{border-radius:14px;margin:3px;transition:all .16s}.rhythm-tabs button:hover,.rhythm-tabs button.active,.image-tabs button:hover,.image-tabs button.active{background:linear-gradient(135deg,#159ed4,#0aab78);box-shadow:0 6px 15px #0a788938}.rhythm-detail,.image-detail,.study-quiz{background:var(--surface);color:var(--ink)}.study-quiz{box-shadow:inset 0 0 0 2px #20a59f33,var(--aero-shadow);border-top:0}.disease-card{background:var(--surface)}.filter-row button{border-radius:999px}.library-tools input,.terms-head input{border-radius:999px;box-shadow:inset 0 2px 5px #05394b14}.phrase-grid article,.abcde article,.shift-rule article{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0847509e}.pattern-family article{background:#fffffff0}.image-detail{background:var(--surface)}.image-detail>img{background:#0c1c22}.term-grid{background:var(--surface)}footer{background:linear-gradient(120deg,#073c55,#086f68,#168d55);border-radius:38px 38px 0 0;margin-top:28px}html[data-theme=dark] footer{background:linear-gradient(120deg,#071e2b,#0b3539,#153b2c)}html[data-theme=dark] .patient-lab,html[data-theme=dark] .ecg-section,html[data-theme=dark] .assessment-section,html[data-theme=dark] .dialogue-section,html[data-theme=dark] .terms-section,html[data-theme=dark] .simulator,html[data-theme=dark] .disease-card,html[data-theme=dark] .profile-facts>div,html[data-theme=dark] .guided-assessment,html[data-theme=dark] .study-steps article,html[data-theme=dark] .term-grid article,html[data-theme=dark] .rhythm-detail>div,html[data-theme=dark] .presentation{background:var(--surface)}html[data-theme=dark] .conduction-card,html[data-theme=dark] .study-quiz{background:linear-gradient(145deg,#123441,#112f32)}html[data-theme=dark] .pattern-family article,html[data-theme=dark] .image-detail{color:#edfaff;background:#12313d}html[data-theme=dark] .sim-choices button,html[data-theme=dark] .study-quiz-choices button,html[data-theme=dark] .quiz-choices button{color:#eafaff;background:#153440;border-color:#3b6570}html[data-theme=dark] .sim-choices .correct,html[data-theme=dark] .sim-choices .reveal,html[data-theme=dark] .study-quiz-choices .correct,html[data-theme=dark] .study-quiz-choices .reveal{background:#184f3a}html[data-theme=dark] .sim-choices .incorrect,html[data-theme=dark] .study-quiz-choices .incorrect{background:#55312f}html[data-theme=dark] .hero-copy strong,html[data-theme=dark] .pattern-family h3,html[data-theme=dark] .pattern-family strong,html[data-theme=dark] .patient-id h3,html[data-theme=dark] .term-grid h3{color:#effcff}@media (width<=1150px){nav a:nth-last-child(-n+2){display:none}}@media (width<=900px){nav{gap:13px}.section-intro,.dialogue-layout,.disease-card>button{grid-template-columns:1fr}.giveaway{border-left:0;border-top:1px solid var(--line);padding:13px 0 0}.profile-facts,.term-grid{grid-template-columns:1fr}.why-panel{position:static}.terms-head{flex-direction:column;align-items:flex-start}.terms-head input{width:100%}.patient-chart{grid-template-columns:1fr 1fr}.patient-id{grid-column:1/-1}.vital{border-top:1px solid var(--line)}.study-steps,.abcde{grid-template-columns:1fr 1fr}.study-steps article,.abcde article{border-bottom:1px solid var(--line)}.conduction-card,.rhythm-lab,.image-lab,.image-detail{grid-template-columns:1fr}.rhythm-tabs,.image-tabs{grid-template-columns:1fr 1fr}.image-detail>img{height:520px}.defined-term:after{left:0;transform:none}.defined-term:hover:after,.defined-term:focus:after{transform:none}}@media (width<=620px){.site-header nav a:not(:first-child){display:none}.hero-promise,.assessment-grid,.phrase-grid,.study-steps,.abcde,.pattern-family,.shift-rule{grid-template-columns:1fr}.assessment-grid article:nth-child(odd){border-right:0}.assessment-grid article:nth-last-child(2){border-bottom:1px solid var(--line)}.safety{grid-template-columns:1fr}.hero-actions{flex-direction:column;align-items:stretch}.profile-facts{grid-template-columns:1fr}.bubble{max-width:95%}.sim-toolbar{flex-direction:column;align-items:flex-start;gap:14px}.sim-toolbar>div{flex-direction:column;gap:2px}.patient-chart{grid-template-columns:1fr}.patient-id{grid-column:auto}.vital{border-right:0}.presentation,.sim-question{margin-left:18px;margin-right:18px;padding-left:0;padding-right:0}.presentation,.conduction-card,.rhythm-detail,.image-detail,.study-quiz{padding:18px}.rhythm-tabs,.image-tabs{grid-template-columns:1fr}.image-detail>img{height:430px}.defined-term:after{min-width:210px;max-width:260px}footer{flex-direction:column;align-items:flex-start}footer>p{text-align:left}}body,.defined-term:after{font-family:Times New Roman,Times,serif!important}html[data-theme=dark]{--dark-bg:#071118;--dark-bg-raised:#0b1821;--dark-panel:#10222d;--dark-panel-2:#142b37;--dark-panel-3:#193540;--dark-text:#f3fbff;--dark-text-2:#c9dce4;--dark-text-3:#9eb7c2;--dark-cyan:#62d8ff;--dark-mint:#63ead4;--dark-green:#79e08f;--dark-border:#9dd3e22e;--dark-border-strong:#85dedd59;--dark-shadow:0 20px 55px #00000057}html[data-theme=dark] body{color:var(--dark-text);background:radial-gradient(circle at 12% 0,#23829d2e,#0000 28%),radial-gradient(circle at 92% 20%,#268e681c,#0000 26%),linear-gradient(#071118 0,#091721 50%,#081511 100%)}html[data-theme=dark] .site-header{border-color:var(--dark-border);background:#08161ee6;box-shadow:0 12px 35px #00000052}html[data-theme=dark] .brand,html[data-theme=dark] nav a{color:var(--dark-text)}html[data-theme=dark] nav a:hover{color:var(--dark-mint)}html[data-theme=dark] .theme-toggle{border:1px solid var(--dark-border-strong);color:var(--dark-text);background:#132c38;box-shadow:inset 0 1px #ffffff0d,0 8px 20px #00000038}html[data-theme=dark] .hero{border:1px solid var(--dark-border);box-shadow:var(--dark-shadow);background:radial-gradient(circle at 82% 24%,#63ead421,#0000 18%),radial-gradient(circle at 74% 45%,#62d8ff1a,#0000 25%),linear-gradient(155deg,#0b2230 0,#103a49 48%,#153c31 100%)}html[data-theme=dark] .hero h1,html[data-theme=dark] .hero-copy strong,html[data-theme=dark] .hero-promise strong{color:var(--dark-text)}html[data-theme=dark] .hero h1 em{color:var(--dark-mint)}html[data-theme=dark] .hero .eyebrow{color:var(--dark-cyan)}html[data-theme=dark] .hero-copy,html[data-theme=dark] .hero-promise{border-color:var(--dark-border);background:#091b24c2;box-shadow:0 14px 35px #0000002e}html[data-theme=dark] .hero-copy,html[data-theme=dark] .hero-promise p{color:var(--dark-text-2)}html[data-theme=dark] .secondary{border-color:var(--dark-border-strong);color:var(--dark-text);background:#15303c}html[data-theme=dark] .primary{color:#fff;background:linear-gradient(#138db5,#0b6f91)}html[data-theme=dark] .section{border-color:var(--dark-border);box-shadow:var(--dark-shadow);color:var(--dark-text);background:linear-gradient(145deg,#0f222df5,#0a1a23f5)}html[data-theme=dark] .disease-section,html[data-theme=dark] .phrases-section,html[data-theme=dark] .cxr-section{background:linear-gradient(145deg,#0d2734,#103339 55%,#12362b)}html[data-theme=dark] .section h2,html[data-theme=dark] .section h3,html[data-theme=dark] .section h4,html[data-theme=dark] .section strong,html[data-theme=dark] .section-intro h2,html[data-theme=dark] .patient-id h3{color:var(--dark-text)}html[data-theme=dark] .section h2 em{color:var(--dark-mint)}html[data-theme=dark] .section p,html[data-theme=dark] .section li,html[data-theme=dark] .section-intro>p,html[data-theme=dark] .patient-id p,html[data-theme=dark] .pattern,html[data-theme=dark] .disease-details p,html[data-theme=dark] .term-grid p,html[data-theme=dark] .rhythm-detail p,html[data-theme=dark] .image-detail p{color:var(--dark-text-2)}html[data-theme=dark] .eyebrow,html[data-theme=dark] .disease-group,html[data-theme=dark] .quiz-top span,html[data-theme=dark] .sim-progress,html[data-theme=dark] .study-quiz-head span,html[data-theme=dark] .image-detail>div>span,html[data-theme=dark] .rhythm-detail>span{color:var(--dark-cyan)}html[data-theme=dark] .simulator,html[data-theme=dark] .disease-card,html[data-theme=dark] .rhythm-detail,html[data-theme=dark] .image-detail,html[data-theme=dark] .study-quiz,html[data-theme=dark] .assessment-grid,html[data-theme=dark] .term-grid,html[data-theme=dark] .why-panel{background:var(--dark-panel);border-color:var(--dark-border);color:var(--dark-text);box-shadow:0 16px 40px #00000040}html[data-theme=dark] .patient-chart,html[data-theme=dark] .patient-id,html[data-theme=dark] .vital,html[data-theme=dark] .assessment-grid article,html[data-theme=dark] .term-grid article,html[data-theme=dark] .disease-card>button,html[data-theme=dark] .disease-details{border-color:var(--dark-border);color:var(--dark-text)}html[data-theme=dark] .sim-toolbar{background:linear-gradient(90deg,#0d678a,#127b68)}html[data-theme=dark] .sim-toolbar span,html[data-theme=dark] .sim-toolbar strong{color:#fff}html[data-theme=dark] .sim-toolbar button{color:#082821;background:#a9f3df}html[data-theme=dark] .presentation,html[data-theme=dark] .profile-facts>div,html[data-theme=dark] .guided-assessment,html[data-theme=dark] .conduction-card,html[data-theme=dark] .rhythm-detail>div,html[data-theme=dark] .study-steps article,html[data-theme=dark] .pattern-family article,html[data-theme=dark] .term-grid article,html[data-theme=dark] .bubble.rt,html[data-theme=dark] .safety,html[data-theme=dark] .rt-note{background:var(--dark-panel-2);border-color:var(--dark-border);color:var(--dark-text)}html[data-theme=dark] .bubble.patient{color:var(--dark-text);background:#1d313b}html[data-theme=dark] .phrase-grid article,html[data-theme=dark] .abcde article,html[data-theme=dark] .shift-rule article{border-color:var(--dark-border);background:#13323be6}html[data-theme=dark] .sim-choices button,html[data-theme=dark] .study-quiz-choices button,html[data-theme=dark] .quiz-choices button{background:var(--dark-panel-2);border-color:var(--dark-border-strong);color:var(--dark-text)}html[data-theme=dark] .sim-choices button span,html[data-theme=dark] .study-quiz-choices button span,html[data-theme=dark] .quiz-choices button span{color:var(--dark-text)}html[data-theme=dark] .sim-choices button:hover:not(:disabled),html[data-theme=dark] .study-quiz-choices button:hover:not(:disabled),html[data-theme=dark] .quiz-choices button:hover:not(:disabled){background:var(--dark-panel-3);border-color:var(--dark-mint)}html[data-theme=dark] .sim-choices b,html[data-theme=dark] .study-quiz-choices b,html[data-theme=dark] .quiz-choices b{color:var(--dark-text);background:#244451}html[data-theme=dark] .sim-choices .correct,html[data-theme=dark] .sim-choices .reveal,html[data-theme=dark] .study-quiz-choices .correct,html[data-theme=dark] .study-quiz-choices .reveal,html[data-theme=dark] .quiz-choices .correct,html[data-theme=dark] .quiz-choices .reveal{background:#173f35;border-color:#53d489}html[data-theme=dark] .sim-choices .incorrect,html[data-theme=dark] .study-quiz-choices .incorrect,html[data-theme=dark] .quiz-choices .incorrect{background:#46292d;border-color:#ff8e8e}html[data-theme=dark] .feedback.good,html[data-theme=dark] .sim-feedback.right{background:#173f35;border-color:#53d489}html[data-theme=dark] .feedback.retry,html[data-theme=dark] .sim-feedback.wrong{background:#46292d;border-color:#ff8e8e}html[data-theme=dark] .feedback p,html[data-theme=dark] .sim-feedback p{color:var(--dark-text-2)}html[data-theme=dark] .filter-row button,html[data-theme=dark] .rhythm-tabs button,html[data-theme=dark] .image-tabs button{border-color:var(--dark-border);color:var(--dark-text-2);background:#112a36}html[data-theme=dark] .filter-row button:hover,html[data-theme=dark] .filter-row button.active,html[data-theme=dark] .rhythm-tabs button:hover,html[data-theme=dark] .rhythm-tabs button.active,html[data-theme=dark] .image-tabs button:hover,html[data-theme=dark] .image-tabs button.active{color:#fff;background:linear-gradient(135deg,#157ca2,#138c70)}html[data-theme=dark] input{border-color:var(--dark-border-strong)!important;color:var(--dark-text)!important;background:#0b1d27!important}html[data-theme=dark] input::placeholder{color:#829ca8}html[data-theme=dark] .giveaway{border-color:var(--dark-border)}html[data-theme=dark] .giveaway p,html[data-theme=dark] .block-title p,html[data-theme=dark] .steps p,html[data-theme=dark] .assessment-grid p,html[data-theme=dark] .study-steps p,html[data-theme=dark] .pattern-family p,html[data-theme=dark] .abcde p,html[data-theme=dark] .shift-rule p{color:var(--dark-text-2)}html[data-theme=dark] .definition-note{border-color:var(--dark-border-strong);background:#112d37}html[data-theme=dark] .definition-note p{color:var(--dark-text-2)}html[data-theme=dark] .defined-term{border-bottom-color:var(--dark-mint)}html[data-theme=dark] .defined-term:hover,html[data-theme=dark] .defined-term:focus{color:#fff;background:#294842}html[data-theme=dark] .defined-term:after{color:#07151d;background:#eafaff;box-shadow:0 12px 30px #00000073}html[data-theme=dark] .defined-term:before{border-top-color:#eafaff}html[data-theme=dark] .conduction-card img,html[data-theme=dark] .rhythm-detail img{background:#edf5f7}html[data-theme=dark] .image-detail>img{background:#02090d}html[data-theme=dark] footer{border-top:1px solid var(--dark-border);color:var(--dark-text-2);background:linear-gradient(120deg,#081923,#0d2c34,#12352d)}body,.site-header,.section,.simulator,.disease-card,.rhythm-detail,.image-detail,.study-quiz,.sim-choices button,.study-quiz-choices button,.quiz-choices button,input{transition:background-color .22s,border-color .22s,color .22s,box-shadow .22s}:root{--retro-navy:#081b3b;--retro-navy-2:#0d2d5b;--retro-ivory:#f6f0dd;--retro-paper:#fffaf0;--retro-blue:#1649c9;--retro-burgundy:#7c3046;--retro-coral:#d66a5e;--retro-ink:#172033;--retro-slate:#607086;--retro-line:#b9b197;--retro-gold:#c9ad77;--retro-shadow:0 8px 0 #00000029,0 18px 45px #0003}body,html[data-theme=dark] body{background:radial-gradient(circle at 50% -15%,#163d6d 0,transparent 34%),var(--retro-navy);color:var(--retro-ink)}.retro-directory{padding-top:8px}.retro-directory .site-header{border:3px double var(--retro-line);color:var(--retro-ivory);background:linear-gradient(#0c2b57,#071a39);border-radius:18px;width:calc(100% - 36px);height:auto;margin:0 18px;padding:15px 26px;box-shadow:inset 0 1px #ffffff38,0 7px 20px #00000047}.retro-directory .brand{color:var(--retro-ivory);font-size:30px;font-weight:700}.retro-directory .brand-mark{background:var(--retro-coral);box-shadow:none;color:var(--retro-navy);border:2px outset #ffaca1;border-radius:4px;width:42px;height:42px}.retro-directory nav{gap:0}.retro-directory nav a{color:var(--retro-ivory);text-underline-offset:4px;border-right:2px dotted #d66a5ebf;padding:5px 21px;font-size:17px;text-decoration:underline}.retro-directory nav a:last-child{border:0}.retro-directory nav a:hover{color:#ff9587}.retro-directory .theme-toggle{color:var(--retro-navy);background:linear-gradient(#fffdf5,#dfd4b8);border:2px outset #fff4d5;border-radius:6px;padding:7px 12px}.retro-directory .hero,html[data-theme=dark] .retro-directory .hero{border:3px double var(--retro-line);box-shadow:var(--retro-shadow);color:var(--retro-ivory);background:linear-gradient(145deg,#0b2852,#061936 68%);border-radius:18px;min-height:auto;margin:14px 18px 28px;padding:42px clamp(24px,4vw,54px) 26px}.retro-directory .hero:before,.retro-directory .hero:after{display:none}.retro-directory .hero>*{max-width:none}.retro-directory .hero-grid{grid-template-columns:.95fr 1.05fr;gap:38px;display:grid}.retro-directory .hero-main{align-self:center}.retro-directory .hero h1,html[data-theme=dark] .retro-directory .hero h1{color:var(--retro-ivory);text-shadow:1px 2px #000;font-size:clamp(50px,5vw,72px);line-height:1.02}.retro-directory .hero h1 em,html[data-theme=dark] .retro-directory .hero h1 em{color:var(--retro-ivory)}.retro-directory .hero .eyebrow{color:var(--retro-coral);letter-spacing:.02em;text-transform:none;font-size:17px}.retro-directory .hero-copy,html[data-theme=dark] .retro-directory .hero-copy{box-shadow:none;color:#f5eddc;background:0 0;border:0;padding:0;font-size:21px;line-height:1.5}.retro-directory .hero-actions{margin-top:30px}.retro-directory .button{border-radius:8px;padding:13px 24px;font-size:18px}.retro-directory .primary{color:#fff;background:linear-gradient(#e77a6d,#bd514c);border:3px outset #ffa99e;box-shadow:inset 0 0 0 1px #ef988a,0 4px 10px #0000004d}.retro-directory .secondary{color:var(--retro-navy);background:linear-gradient(#fffdf4,#e3d8bb);border:3px outset #fff6dc}.learning-directory{background:var(--retro-ivory);border:3px double var(--retro-line);color:var(--retro-ink);border-radius:16px;padding:18px;box-shadow:inset 0 0 0 4px #ffffff73,0 8px 20px #00000040}.directory-head{justify-content:space-between;align-items:center;display:flex}.directory-head h2{margin:0;font-size:30px}.directory-head span{color:var(--retro-navy);font-size:21px}.directory-columns,.learning-directory>a{grid-template-columns:1.25fr .85fr .65fr;align-items:center;display:grid}.directory-columns{color:var(--retro-ivory);text-align:center;background:linear-gradient(#173d76,#0c2856);border:3px outset #38598a;margin:14px 0 2px;padding:7px 12px}.learning-directory>a{border-bottom:2px dotted var(--retro-line);color:var(--retro-ink);padding:13px 10px;font-size:17px}.learning-directory>a>span:first-child{color:var(--retro-blue);text-underline-offset:3px;text-decoration:underline}.learning-directory b{color:#fff;text-align:center;background:linear-gradient(#9f3d5a,#6e1e38);border:2px outset #b85874;border-radius:99px;padding:3px 10px;font-weight:400}.retro-directory .hero-promise{background:var(--retro-ivory);border:3px double var(--retro-line);border-radius:14px;grid-template-columns:repeat(3,1fr);margin-top:26px;padding:13px;display:grid;box-shadow:inset 0 0 0 3px #ffffff80,0 8px 20px #00000038}.retro-directory .hero-promise>div{border-right:2px dotted var(--retro-line);justify-content:center;align-items:center;gap:20px;padding:7px 18px;display:flex}.retro-directory .hero-promise>div:last-child{border:0}.retro-directory .hero-promise span{color:var(--retro-blue);font-size:36px}.retro-directory .hero-promise p{color:var(--retro-navy);font-size:18px}.retro-directory .hero-promise strong{color:var(--retro-navy);font-size:36px;line-height:1}.retro-directory .section,html[data-theme=dark] .retro-directory .section{background:var(--retro-ivory);border:3px double var(--retro-line);box-shadow:var(--retro-shadow);color:var(--retro-ink);border-radius:18px;max-width:1240px;margin:28px auto;padding:clamp(60px,7vw,92px) clamp(24px,5vw,68px)}.retro-directory .section h2,.retro-directory .section h3,.retro-directory .section h4,.retro-directory .section strong,html[data-theme=dark] .retro-directory .section h2,html[data-theme=dark] .retro-directory .section h3,html[data-theme=dark] .retro-directory .section h4,html[data-theme=dark] .retro-directory .section strong{color:var(--retro-navy)}.retro-directory .section h2 em,html[data-theme=dark] .retro-directory .section h2 em{color:var(--retro-burgundy)}.retro-directory .section p,.retro-directory .section li,html[data-theme=dark] .retro-directory .section p,html[data-theme=dark] .retro-directory .section li,html[data-theme=dark] .retro-directory .section-intro>p{color:var(--retro-ink)}.retro-directory .eyebrow,html[data-theme=dark] .retro-directory .eyebrow{color:var(--retro-burgundy)}.retro-directory .section-intro{border-bottom:2px dotted var(--retro-line);padding-bottom:28px}.retro-directory .section-intro.dark h2,.retro-directory .section-intro.dark>p{color:var(--retro-ink)}.retro-directory .simulator,.retro-directory .rhythm-detail,.retro-directory .image-detail,.retro-directory .study-quiz,.retro-directory .visual-quiz,.retro-directory .disease-card,.retro-directory .term-grid,.retro-directory .assessment-grid{background:var(--retro-paper);border:1px solid var(--retro-line);box-shadow:inset 0 1px 0 #fff,var(--retro-shadow);color:var(--retro-ink);border-radius:12px}.retro-directory .sim-toolbar,.retro-directory .visual-quiz-bar{color:var(--retro-ivory);background:linear-gradient(#173d76,#0b2857);border:3px outset #365a8c;border-radius:9px 9px 0 0}.retro-directory .sim-toolbar button,.retro-directory .visual-quiz-bar button{color:var(--retro-navy);background:linear-gradient(#fffdf4,#e3d8bb);border:2px outset #fff6dc;border-radius:5px}.retro-directory .patient-chart,.retro-directory .patient-id,.retro-directory .vital{border-color:var(--retro-line)}.retro-directory .presentation,.retro-directory .guided-assessment,.retro-directory .profile-facts>div,.retro-directory .conduction-card,.retro-directory .study-steps article,.retro-directory .pattern-family article,.retro-directory .term-grid article,.retro-directory .bubble.rt,.retro-directory .bubble.patient,.retro-directory .safety,.retro-directory .why-panel{border-color:var(--retro-line);color:var(--retro-ink);background:#fffaf0}.retro-directory .study-steps,.retro-directory .abcde{border:1px solid var(--retro-line);border-radius:10px}.retro-directory .study-steps article,.retro-directory .abcde article{border-color:var(--retro-line)}.retro-directory .abcde article,.retro-directory .shift-rule article,.retro-directory .phrase-grid article{color:var(--retro-ivory);background:linear-gradient(#173d76,#0b2857);border:2px outset #365a8c}.retro-directory .abcde p,.retro-directory .shift-rule p,.retro-directory .phrase-grid p,html[data-theme=dark] .retro-directory .abcde p,html[data-theme=dark] .retro-directory .shift-rule p{color:#f4ecd9}.retro-directory .rhythm-tabs button,.retro-directory .image-tabs button,.retro-directory .filter-row button{color:var(--retro-blue);background:linear-gradient(#fdf9ed,#ded3b7);border:2px outset #f8efd7;border-radius:4px;text-decoration:underline}.retro-directory .rhythm-tabs button.active,.retro-directory .image-tabs button.active,.retro-directory .filter-row button.active,.retro-directory .rhythm-tabs button:hover,.retro-directory .image-tabs button:hover,.retro-directory .filter-row button:hover{color:#fff;background:linear-gradient(#9c3b56,#6f1f39);border-color:#b85874}.retro-directory input{border:2px inset var(--retro-line)!important;color:var(--retro-ink)!important;background:#fffdf7!important;border-radius:4px!important}.retro-directory .sim-choices button,.retro-directory .study-quiz-choices button,.retro-directory .quiz-choices button,html[data-theme=dark] .retro-directory .sim-choices button,html[data-theme=dark] .retro-directory .study-quiz-choices button,html[data-theme=dark] .retro-directory .quiz-choices button{border:1px solid var(--retro-line);color:var(--retro-ink);background:#fffdf7;border-radius:6px}.retro-directory .sim-choices button:hover:not(:disabled),.retro-directory .study-quiz-choices button:hover:not(:disabled),.retro-directory .quiz-choices button:hover:not(:disabled){border-color:var(--retro-blue);transform:translate(-1px,-1px);box-shadow:2px 2px #1649c933}.retro-directory .sim-choices b,.retro-directory .study-quiz-choices b,.retro-directory .quiz-choices b{background:var(--retro-navy);color:var(--retro-ivory)}.retro-directory .sim-choices .correct,.retro-directory .study-quiz-choices .correct,.retro-directory .quiz-choices .correct,.retro-directory .sim-choices .reveal,.retro-directory .study-quiz-choices .reveal,.retro-directory .quiz-choices .reveal{background:#e5f1df;border-color:#56864d}.retro-directory .sim-choices .incorrect,.retro-directory .study-quiz-choices .incorrect,.retro-directory .quiz-choices .incorrect{background:#f6ded8;border-color:#b65858}.retro-directory .feedback.good,.retro-directory .sim-feedback.right{background:#e5f1df;border-color:#56864d}.retro-directory .feedback.retry,.retro-directory .sim-feedback.wrong{background:#f6ded8;border-color:#b65858}.visual-quiz{margin-top:46px}.visual-quiz-bar{justify-content:space-between;align-items:center;padding:13px 16px;display:flex}.visual-quiz-bar>div{align-items:center;gap:18px;display:flex}.visual-quiz-bar span,.visual-quiz-bar strong,.visual-quiz-bar small{color:var(--retro-ivory);font-size:15px}.visual-quiz-bar button{cursor:pointer;padding:7px 10px}.visual-quiz-body{grid-template-columns:1fr 1.1fr;gap:28px;padding:26px;display:grid}.visual-case-image{position:relative}.visual-case-image img{border:3px inset var(--retro-line);object-fit:contain;background:#0a1220;width:100%;height:460px}.visual-case-image>span{background:var(--retro-burgundy);color:#fff;border:2px outset #b85874;padding:4px 9px;position:absolute;bottom:12px;right:12px}.question-stage{letter-spacing:.08em;text-transform:uppercase;font-size:14px;font-weight:700;color:var(--retro-burgundy)!important}.visual-question>h3{margin:8px 0 20px;font-size:28px;line-height:1.25}.visual-hint{border-top:2px dotted var(--retro-line);margin-top:16px;padding-top:12px}.visual-hint summary{color:var(--retro-blue);cursor:pointer;text-decoration:underline}.visual-hint p{margin:8px 0 0}.retro-directory .defined-term{border-bottom-color:var(--retro-blue)}.retro-directory .defined-term:hover,.retro-directory .defined-term:focus{color:var(--retro-ink);background:#fff0b8}.retro-directory .defined-term:after{background:var(--retro-navy);border:2px solid var(--retro-line);color:var(--retro-ivory);border-radius:5px}.retro-directory .defined-term:before{border-top-color:var(--retro-navy)}.retro-directory footer{border:3px double var(--retro-line);color:var(--retro-ivory);background:linear-gradient(#0d2e5d,#071a39);border-radius:18px 18px 0 0;margin:34px 18px 0}.retro-directory footer a{color:#c6d6ff;text-decoration:underline}html:not([data-theme=dark]) body{background:#d8d1bf}html:not([data-theme=dark]) .retro-directory .site-header,html:not([data-theme=dark]) .retro-directory .hero{box-shadow:0 8px 26px #0516313d}@media (width<=980px){.retro-directory .hero-grid,.visual-quiz-body{grid-template-columns:1fr}.learning-directory{margin-top:8px}.retro-directory nav a{padding:5px 10px}.visual-case-image img{height:400px}}@media (width<=650px){.retro-directory{padding-top:0}.retro-directory .site-header{border-radius:0 0 14px 14px;width:100%;margin:0;padding:12px 15px}.retro-directory .brand{font-size:23px}.retro-directory .hero{margin:10px 8px 20px;padding:30px 18px 18px}.retro-directory .hero h1{font-size:45px}.retro-directory .section{border-radius:12px;margin:18px 8px;padding:48px 18px}.learning-directory{padding:11px}.directory-columns,.learning-directory>a{grid-template-columns:1.2fr .7fr .7fr;font-size:13px}.retro-directory .hero-promise{grid-template-columns:1fr}.retro-directory .hero-promise>div{border-bottom:2px dotted var(--retro-line);border-right:0}.retro-directory .hero-promise>div:last-child{border:0}.visual-quiz-bar{flex-direction:column;align-items:flex-start;gap:10px}.visual-quiz-bar>div{flex-wrap:wrap}.visual-case-image img{height:320px}}body,html[data-theme=dark] body,html:not([data-theme=dark]) body{background-color:#06152d!important;background-image:linear-gradient(#0410271f,#04102757),url(/study-images/rt-pixel-collage-bg.png)!important;background-position:top!important;background-repeat:no-repeat!important;background-size:cover!important;background-attachment:fixed!important}.retro-directory{font-size:20px;line-height:1.65;position:relative}.retro-directory .site-header,.retro-directory .hero,.retro-directory .section,.retro-directory footer{isolation:isolate;position:relative;overflow:hidden}.retro-directory .section:before{background:repeating-linear-gradient(90deg,var(--retro-coral) 0 8px,transparent 8px 16px,var(--retro-blue) 16px 24px,transparent 24px 32px);content:"";opacity:.78;z-index:0;height:6px;position:absolute;top:11px;left:18px;right:18px}.retro-directory .brand-icon{filter:drop-shadow(3px 3px #0000006b);height:54px;image-rendering:pixelated;object-fit:contain;width:54px}.retro-directory .footer-brand .brand-icon{width:64px;height:64px}.retro-directory .brand{gap:14px}.retro-directory .hero-copy,.retro-directory .section-intro>p{font-size:22px!important;line-height:1.62!important}.retro-directory .section p,.retro-directory .section li,.retro-directory .presentation p,.retro-directory .guided-assessment p,.retro-directory .rhythm-detail p,.retro-directory .image-detail p,.retro-directory .assessment-grid p,.retro-directory .study-steps p,.retro-directory .pattern-family p,.retro-directory .disease-details p,.retro-directory .giveaway p,.retro-directory .term-grid p,.retro-directory .bubble p,.retro-directory .why-panel li{font-size:19px!important;line-height:1.65!important}.retro-directory .section h2{font-size:clamp(48px,5vw,72px);line-height:1.04}.retro-directory .section h3{line-height:1.25}.retro-directory .eyebrow,.retro-directory .disease-group,.retro-directory .quiz-top span,.retro-directory .quiz-top strong,.retro-directory .study-quiz-head span,.retro-directory .study-quiz-head strong,.retro-directory .rhythm-detail>span,.retro-directory .image-detail>div>span,.retro-directory .giveaway strong,.retro-directory .disease-details strong,.retro-directory .patient-id>span,.retro-directory .presentation>strong{letter-spacing:.06em!important;font-size:16px!important}.retro-directory .pattern,.retro-directory .result-count,.retro-directory .expand,.retro-directory .vital small,.retro-directory .visual-quiz-bar span,.retro-directory .visual-quiz-bar strong,.retro-directory .visual-quiz-bar small{font-size:17px!important}.retro-directory .sim-choices span,.retro-directory .study-quiz-choices span,.retro-directory .quiz-choices span{font-size:18px!important;line-height:1.55!important}.retro-directory .sim-choices button,.retro-directory .study-quiz-choices button,.retro-directory .quiz-choices button{min-height:62px;padding:17px 18px}.retro-directory .filter-row button,.retro-directory .rhythm-tabs button,.retro-directory .image-tabs button,.retro-directory .quiz-help button,.retro-directory .sim-hint button,.retro-directory .feedback button,.retro-directory .sim-feedback button,.retro-directory input{font-size:17px!important}.retro-directory nav a{font-size:18px}.retro-directory footer p,.retro-directory footer>a,.retro-directory .footer-brand span{line-height:1.5;font-size:16px!important}.retro-directory .term-grid h3{font-size:27px}.term-search{place-items:flex-end end;gap:8px;min-width:min(100%,480px);display:grid}.term-search span{color:var(--muted);font-size:15px;font-weight:700}.term-search input{width:100%}html[data-theme=dark] .term-search span{color:#d8e6f5}.retro-directory .defined-term:after{min-width:260px;max-width:380px;line-height:1.5;font-size:17px!important}.retro-directory .rhythm-detail img,.retro-directory .ecg-section .visual-case-image img{image-rendering:auto;object-fit:contain;width:100%;max-height:360px;padding:0;background:#fff!important;border:3px solid #9d234d!important;height:auto!important}.retro-directory .ecg-section .visual-case-image{align-self:center}.retro-directory .rhythm-detail{padding:28px}.retro-directory .rhythm-detail>div{border:1px solid var(--retro-line);border-radius:8px}.retro-directory .simulator,.retro-directory .visual-quiz,.retro-directory .disease-card,.retro-directory .rhythm-detail,.retro-directory .image-detail,.retro-directory .study-quiz,.retro-directory .term-grid,.retro-directory .assessment-grid{box-shadow:2px 2px #081b3b6b,5px 5px #d66a5e33,0 14px 32px #00000029}.retro-directory button,.retro-directory a{transition:transform .12s,filter .12s,background-color .12s,color .12s}.retro-directory button:hover,.retro-directory .button:hover{filter:brightness(1.06)}.retro-directory .theme-toggle:focus-visible,.retro-directory a:focus-visible,.retro-directory button:focus-visible,.retro-directory input:focus-visible{outline-offset:3px;outline:4px solid #ffd45f}html[data-theme=dark] .retro-directory .section{color:#f7f2e5!important;background:#101f33!important;border-color:#9eb1c7!important}html[data-theme=dark] .retro-directory .section h2,html[data-theme=dark] .retro-directory .section h3,html[data-theme=dark] .retro-directory .section h4,html[data-theme=dark] .retro-directory .section strong{color:#fff8e7!important}html[data-theme=dark] .retro-directory .section h2 em,html[data-theme=dark] .retro-directory .eyebrow,html[data-theme=dark] .retro-directory .question-stage{color:#ff9c8e!important}html[data-theme=dark] .retro-directory .section p,html[data-theme=dark] .retro-directory .section li,html[data-theme=dark] .retro-directory .section-intro>p,html[data-theme=dark] .retro-directory .pattern,html[data-theme=dark] .retro-directory .result-count{color:#f2eee5!important}html[data-theme=dark] .retro-directory .simulator,html[data-theme=dark] .retro-directory .visual-quiz,html[data-theme=dark] .retro-directory .disease-card,html[data-theme=dark] .retro-directory .rhythm-detail,html[data-theme=dark] .retro-directory .image-detail,html[data-theme=dark] .retro-directory .study-quiz,html[data-theme=dark] .retro-directory .term-grid,html[data-theme=dark] .retro-directory .assessment-grid{color:#f7f2e5!important;background:#172a42!important;border-color:#768ca5!important}html[data-theme=dark] .retro-directory .presentation,html[data-theme=dark] .retro-directory .guided-assessment,html[data-theme=dark] .retro-directory .profile-facts>div,html[data-theme=dark] .retro-directory .conduction-card,html[data-theme=dark] .retro-directory .study-steps article,html[data-theme=dark] .retro-directory .pattern-family article,html[data-theme=dark] .retro-directory .term-grid article,html[data-theme=dark] .retro-directory .bubble.rt,html[data-theme=dark] .retro-directory .bubble.patient,html[data-theme=dark] .retro-directory .safety,html[data-theme=dark] .retro-directory .why-panel,html[data-theme=dark] .retro-directory .rhythm-detail>div{color:#f7f2e5!important;background:#203650!important;border-color:#7188a2!important}html[data-theme=dark] .retro-directory .sim-choices button,html[data-theme=dark] .retro-directory .study-quiz-choices button,html[data-theme=dark] .retro-directory .quiz-choices button{color:#fff8e9!important;background:#233b57!important;border-color:#8198b1!important}html[data-theme=dark] .retro-directory .sim-choices button span,html[data-theme=dark] .retro-directory .study-quiz-choices button span,html[data-theme=dark] .retro-directory .quiz-choices button span{color:#fff8e9!important}html[data-theme=dark] .retro-directory .sim-choices .correct,html[data-theme=dark] .retro-directory .sim-choices .reveal,html[data-theme=dark] .retro-directory .study-quiz-choices .correct,html[data-theme=dark] .retro-directory .study-quiz-choices .reveal,html[data-theme=dark] .retro-directory .quiz-choices .correct,html[data-theme=dark] .retro-directory .quiz-choices .reveal{background:#174a38!important;border-color:#7ee1ad!important}html[data-theme=dark] .retro-directory .sim-choices .incorrect,html[data-theme=dark] .retro-directory .study-quiz-choices .incorrect,html[data-theme=dark] .retro-directory .quiz-choices .incorrect{background:#5a2e36!important;border-color:#ff9e9e!important}html[data-theme=dark] .retro-directory .rhythm-tabs button,html[data-theme=dark] .retro-directory .image-tabs button,html[data-theme=dark] .retro-directory .filter-row button{color:#d9e6ff!important;background:#203650!important;border-color:#7188a2!important}html[data-theme=dark] .retro-directory .rhythm-tabs button.active,html[data-theme=dark] .retro-directory .image-tabs button.active,html[data-theme=dark] .retro-directory .filter-row button.active{color:#fff!important;background:#8a3654!important}html[data-theme=dark] .retro-directory input{color:#fff8e9!important;background:#0b192b!important;border-color:#8ca2ba!important}html[data-theme=dark] .retro-directory .learning-directory{color:#fff8e7;background:#132741;border-color:#9eb1c7}html[data-theme=dark] .retro-directory .learning-directory h2,html[data-theme=dark] .retro-directory .learning-directory>a{color:#fff8e7}html[data-theme=dark] .retro-directory .directory-head span{color:#ffd071}html[data-theme=dark] .retro-directory .learning-directory>a>span:first-child{color:#a9c8ff}html[data-theme=dark] .retro-directory .hero-promise{background:#132741;border-color:#9eb1c7}html[data-theme=dark] .retro-directory .hero-promise p,html[data-theme=dark] .retro-directory .hero-promise strong{color:#fff8e7!important}@media (width<=650px){.retro-directory{font-size:19px}.retro-directory .brand-icon{width:45px;height:45px}.retro-directory .section p,.retro-directory .section li,.retro-directory .presentation p,.retro-directory .guided-assessment p,.retro-directory .rhythm-detail p,.retro-directory .image-detail p,.retro-directory .assessment-grid p,.retro-directory .study-steps p,.retro-directory .pattern-family p,.retro-directory .disease-details p,.retro-directory .giveaway p,.retro-directory .term-grid p{font-size:18px!important}.retro-directory .directory-columns,.retro-directory .learning-directory>a{grid-template-columns:1.15fr .8fr .8fr;font-size:16px}.retro-directory .rhythm-detail img,.retro-directory .ecg-section .visual-case-image img{max-height:260px}}.breath-sounds-section{background:#f5efdf!important}.sound-safety{margin:30px 0}.sound-library{grid-template-columns:minmax(220px,.34fr) minmax(0,1fr);gap:18px;margin:36px 0 48px;display:grid}.sound-tabs{background:#ded4bc;border:2px inset #f8efd7;border-radius:14px;align-content:start;gap:7px;padding:10px;display:grid}.sound-tabs button{color:#25374d;cursor:pointer;text-align:left;background:#fffaf0;border:1px solid #9f967f;border-radius:9px;padding:12px;font-family:Times New Roman,Times,serif;font-size:17px;font-weight:700}.sound-tabs button.active,.sound-tabs button:hover{color:#fff8e4;background:#173d76;border-color:#173d76}.sound-study-card{background:#fffaf0;border:2px solid #a59c87;border-radius:16px;gap:19px;padding:24px;display:grid;box-shadow:4px 4px #102b4924}.sound-study-heading{align-items:center;gap:15px;display:flex}.sound-study-heading>span{color:#fff8e4;background:#173d76;border:3px outset #365a8c;border-radius:8px;justify-content:center;align-items:center;height:54px;padding:0 10px;font-family:"Press Start 2P",monospace;font-size:11px;display:flex}.sound-study-heading p{letter-spacing:.06em;text-transform:uppercase;font-weight:900;color:#70475a!important;margin:0 0 4px!important;font-size:13px!important}.sound-study-heading h3{margin:0;font-family:Times New Roman,Times,serif;font-size:30px}.sound-study-card audio,.sound-player audio{accent-color:#b87368;background:#efe4c8;border:2px inset #d2c39d;border-radius:999px;width:100%;min-height:48px;display:block}.sound-study-notes{grid-template-columns:1fr 1fr;gap:12px;display:grid}.sound-study-notes>div{background:#f0e5c9;border-left:5px solid #b87368;border-radius:8px;padding:15px}.sound-study-notes strong{font-size:18px}.retro-directory .sound-study-notes p{color:#3e5066!important;margin:5px 0 0!important;font-size:16px!important;line-height:1.5!important}.sound-quiz{background:#efe5cb;border:2px solid #8f876f;border-radius:16px;overflow:hidden;box-shadow:5px 5px #102b492e}.sound-quiz-bar{color:#fff8e4;background:linear-gradient(#173d76,#0b2857);justify-content:space-between;align-items:center;gap:20px;padding:15px 18px;display:flex}.sound-quiz-bar>div{gap:3px;display:grid}.sound-quiz-bar span{color:#ffd978;letter-spacing:.05em;text-transform:uppercase;font-size:13px;font-weight:900}.sound-quiz-bar strong{color:#fff8e4!important;font-size:18px!important}.sound-quiz-bar>div:last-child{align-items:center;gap:12px;display:flex}.sound-quiz-bar small{font-size:15px;font-weight:800}.sound-quiz-bar button{color:#102b49;cursor:pointer;background:linear-gradient(#fffdf4,#ded4bc);border:2px outset #fff6dc;border-radius:7px;padding:9px 12px;font-size:14px;font-weight:900}.sound-quiz-body{grid-template-columns:.82fr 1.18fr;gap:22px;padding:24px;display:grid}.sound-player{color:#fff8e4;text-align:center;background:#102b49;border:3px double #718096;border-radius:14px;align-content:center;justify-items:center;gap:18px;min-height:360px;padding:28px;display:grid}.sound-player>span{background:#c9796d;border:4px outset #e4a398;border-radius:50%;justify-content:center;align-items:center;width:88px;height:88px;font-size:42px;display:flex}.sound-player strong{font-family:Times New Roman,Times,serif;color:#fff8e4!important;font-size:24px!important}.retro-directory .sound-player p{color:#d8e6f5!important;margin:8px 0 0!important;font-size:16px!important;line-height:1.5!important}.sound-question{background:#fffaf0;border:1px solid #b7aa8e;border-radius:14px;padding:22px}.sound-question h3{margin:4px 0 17px;font-family:Times New Roman,Times,serif;font-size:29px}.sound-directory-icon{color:#ffd978;background:#173d76;border:2px outset #365a8c;border-radius:7px;justify-content:center;align-items:center;font-size:23px!important;display:flex!important}html[data-theme=dark] .breath-sounds-section{background:#172a42!important}html[data-theme=dark] .sound-tabs{background:#14263b;border-color:#7188a2}html[data-theme=dark] .sound-tabs button{color:#fff8e4;background:#203650;border-color:#7188a2}html[data-theme=dark] .sound-tabs button.active,html[data-theme=dark] .sound-tabs button:hover{background:#8a3654;border-color:#d48a7e}html[data-theme=dark] .sound-study-card,html[data-theme=dark] .sound-question{background:#203650;border-color:#7188a2}html[data-theme=dark] .sound-study-notes>div{background:#172a42;border-color:#d48a7e}html[data-theme=dark] .retro-directory .sound-study-notes p{color:#d8e6f5!important}html[data-theme=dark] .sound-study-card audio,html[data-theme=dark] .sound-player audio{background:#d8e6f5;border-color:#7188a2}html[data-theme=dark] .sound-quiz{background:#172a42;border-color:#7188a2}@media (width<=900px){.sound-library,.sound-quiz-body{grid-template-columns:1fr}.sound-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}.sound-player{min-height:290px}}@media (width<=620px){.sound-tabs,.sound-study-notes{grid-template-columns:1fr}.sound-quiz-bar,.sound-quiz-bar>div:last-child{flex-direction:column;align-items:flex-start}.sound-quiz-body{padding:14px}.sound-player,.sound-question,.sound-study-card{padding:17px}.sound-study-heading{flex-direction:column;align-items:flex-start}.sound-study-heading h3{font-size:26px}}.retro-directory .sim-toolbar,.retro-directory .visual-quiz-bar,.retro-directory .abcde article,.retro-directory .shift-rule article,.retro-directory .phrase-grid article,.retro-directory .directory-columns,.retro-directory .abg-method article{color:#fffdf5!important;background:#061a38!important;border-color:#91add5!important}.retro-directory .sim-toolbar>div span,.retro-directory .sim-toolbar>div strong,.retro-directory .visual-quiz-bar span,.retro-directory .visual-quiz-bar strong,.retro-directory .visual-quiz-bar small,.retro-directory .abcde strong,.retro-directory .abcde p,.retro-directory .shift-rule span,.retro-directory .shift-rule strong,.retro-directory .shift-rule p,.retro-directory .phrase-grid span,.retro-directory .phrase-grid p,.retro-directory .directory-columns strong,.retro-directory .abg-method strong,.retro-directory .abg-method p{text-shadow:0 1px 1px #000;color:#fffdf5!important;opacity:1!important}.retro-directory .visual-quiz-bar strong{font-weight:800;font-size:19px!important}.retro-directory .visual-quiz-bar span{font-weight:800;font-size:18px!important}.retro-directory .visual-quiz-bar small{font-weight:700;font-size:18px!important}.retro-directory .abcde strong{font-size:20px!important}.retro-directory .abcde p{font-size:18px!important}.retro-directory .abcde b{height:42px;text-shadow:none;border:2px solid #fff1af;width:42px;font-size:22px;font-weight:800;color:#071a39!important;background:#ffd86b!important}.retro-directory .shift-rule span,.retro-directory .phrase-grid span{font-weight:800;color:#ffd86b!important;font-size:17px!important}.retro-directory .sim-toolbar button,.retro-directory .visual-quiz-bar button{text-shadow:none;font-weight:800;color:#071a39!important;background:#fff7dd!important;border-color:#fff!important}.visual-question-meta{border-bottom:2px dotted var(--retro-line);justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px;padding-bottom:12px;display:flex}.visual-question-meta .question-stage{margin:0}.retro-directory .question-counter{background:#7c3046;border:2px solid #d98ca3;border-radius:8px;flex:none;padding:7px 11px;font-size:17px;font-weight:800;color:#fff!important}.retro-directory .cxr-section .question-counter,.retro-directory .visual-case-image>span{display:none}.retro-directory .definition-note{background:#fff4d8;border:2px solid #9c8557;border-radius:16px;justify-content:center;align-items:center;gap:15px;width:100%;max-width:680px;margin:34px auto 0;padding:17px 22px;display:flex}.retro-directory .definition-note>span{color:#fff;letter-spacing:0;text-transform:none;background:#071a39;border:2px solid #d9a85f;border-radius:8px;flex:none;justify-content:center;align-items:center;width:44px;height:44px;padding:0;font-size:25px;font-weight:800;display:flex}.retro-directory .definition-note>div{gap:2px;display:grid}.retro-directory .definition-note strong{color:#071a39!important;font-size:19px!important}.retro-directory .definition-note p{margin:0;color:#242d3e!important;font-size:18px!important;line-height:1.45!important}html[data-theme=dark] .retro-directory .definition-note{background:#172c45;border-color:#91add5}html[data-theme=dark] .retro-directory .definition-note strong,html[data-theme=dark] .retro-directory .definition-note p{color:#fffdf5!important}.retro-directory .conduction-card img{object-fit:contain;height:auto;max-height:none}@media (width<=650px){.visual-question-meta{flex-direction:column;align-items:flex-start;gap:8px}.retro-directory .definition-note{text-align:left;justify-content:flex-start}}.retro-directory .hero-promise{grid-template-columns:repeat(4,1fr)}.abg-method{grid-template-columns:repeat(4,1fr);gap:10px;margin-top:42px;display:grid}.abg-method article{border:2px solid;align-items:flex-start;gap:13px;padding:20px;display:flex}.abg-method b{color:#071a39;background:#ffd86b;border:2px solid #fff1af;border-radius:8px;flex:none;justify-content:center;align-items:center;width:42px;height:42px;font-size:22px;display:flex}.abg-method strong{font-size:19px}.retro-directory .abg-method p{margin:5px 0 0;font-size:17px!important;line-height:1.5!important}.abg-lab{background:var(--retro-paper);border:2px solid var(--retro-line);border-radius:12px;margin-top:28px;overflow:hidden;box-shadow:2px 2px #081b3b6b,5px 5px #d66a5e33,0 14px 32px #00000029}.abg-values{grid-template-columns:repeat(4,1fr);display:grid}.abg-values article{border-bottom:2px solid var(--retro-line);border-right:2px solid var(--retro-line);text-align:center;background:#fffaf0;gap:3px;padding:24px;display:grid}.abg-values article:last-child{border-right:0}.abg-values span{color:#7c3046;font-size:18px;font-weight:800}.abg-values strong{line-height:1.1;color:#071a39!important;font-size:42px!important}.abg-values small{color:#3c485c;font-size:16px}.abg-question{padding:32px}.abg-question>h3{margin:8px 0 23px;font-size:31px;line-height:1.25}.abg-question .question-stage{font-size:16px!important}.abg-question .feedback button{font-size:17px}.abg-caution{margin-top:24px}html[data-theme=dark] .retro-directory .abg-lab{color:#f7f2e5;background:#172a42;border-color:#768ca5}html[data-theme=dark] .retro-directory .abg-values article{background:#203650;border-color:#7188a2}html[data-theme=dark] .retro-directory .abg-values span{color:#ffd86b}html[data-theme=dark] .retro-directory .abg-values strong,html[data-theme=dark] .retro-directory .abg-values small{color:#fffdf5!important}@media (width<=1180px){.retro-directory nav a{padding:5px 9px;font-size:16px}}@media (width<=900px){.abg-method,.abg-values,.retro-directory .hero-promise{grid-template-columns:1fr 1fr}.retro-directory .hero-promise>div:nth-child(2){border-right:0}.retro-directory .hero-promise>div:nth-child(-n+2){border-bottom:2px dotted var(--retro-line)}}@media (width<=620px){.abg-method,.abg-values,.retro-directory .hero-promise{grid-template-columns:1fr}.abg-values article,.retro-directory .hero-promise>div{border-right:0}.abg-question{padding:22px}}.abg-builder{gap:14px;display:grid}.abg-axis{border:2px solid var(--retro-line);background:#fffaf0;border-radius:10px;grid-template-columns:minmax(230px,.85fr) 1.35fr;align-items:center;gap:20px;padding:18px;display:grid}.abg-axis-title{align-items:center;gap:13px;display:flex}.abg-axis-title>b{color:#fff;background:#071a39;border:2px solid #d9a85f;border-radius:8px;flex:none;justify-content:center;align-items:center;width:40px;height:40px;font-size:20px;display:flex}.abg-axis-title>div{gap:2px;display:grid}.abg-axis-title strong{color:#071a39!important;font-size:20px!important}.abg-axis-title span{color:#3c485c;font-size:16px;line-height:1.35}.abg-axis-options{grid-template-columns:repeat(auto-fit,minmax(145px,1fr));gap:9px;display:grid}.abg-axis-options button{color:#071a39;cursor:pointer;background:#f4eddb;border:2px solid #8c846e;border-radius:8px;min-height:52px;padding:10px 12px;font-size:18px;font-weight:800}.abg-axis-options button:hover:not(:disabled){border-color:#1649c9;transform:translateY(-1px)}.abg-axis-options button.selected{color:#fff;background:#1649c9;border-color:#8eb0ff}.abg-axis-options button.correct{color:#fff;background:#1f6b49;border-color:#8fe0b1}.abg-axis-options button.incorrect{color:#fff;background:#8b3341;border-color:#ffadb7}.abg-axis-options button:disabled{cursor:default;opacity:1}.abg-submit{color:#fff;cursor:pointer;background:linear-gradient(#e77a6d,#bd514c);border:3px outset #ffa99e;border-radius:8px;margin-top:20px;padding:14px 22px;font-size:19px;font-weight:800}.abg-submit:disabled{color:#615d55;cursor:not-allowed;background:#c9c2b3;border-color:#ddd4c3}.abg-values .oxygen-card{background:#edf7ff}.oxygen-result{background:#eef7ff;border:2px solid #7aa8c7;border-radius:8px;gap:4px;margin:14px 0;padding:14px;display:grid}.oxygen-result span{color:#1649c9;text-transform:uppercase;font-size:15px;font-weight:800}.oxygen-result strong{color:#071a39!important;font-size:18px!important}html[data-theme=dark] .retro-directory .abg-axis{background:#203650;border-color:#7188a2}html[data-theme=dark] .retro-directory .abg-axis-title strong,html[data-theme=dark] .retro-directory .abg-axis-title span{color:#fffdf5!important}html[data-theme=dark] .retro-directory .abg-axis-options button{color:#fffdf5;background:#172a42;border-color:#91add5}html[data-theme=dark] .retro-directory .abg-axis-options button.selected{background:#2458b8;border-color:#a9c5ff}html[data-theme=dark] .retro-directory .abg-axis-options button.correct{background:#174a38;border-color:#7ee1ad}html[data-theme=dark] .retro-directory .abg-axis-options button.incorrect{background:#5a2e36;border-color:#ff9e9e}html[data-theme=dark] .retro-directory .abg-values .oxygen-card,html[data-theme=dark] .retro-directory .oxygen-result{background:#18344e;border-color:#78aace}html[data-theme=dark] .retro-directory .oxygen-result strong{color:#fffdf5!important}@media (width<=800px){.abg-axis,.abg-axis-options{grid-template-columns:1fr}}.sectioned-app{min-height:100vh}.sectioned-app .site-header{gap:18px;overflow:visible}.sectioned-app .site-header nav{overscroll-behavior-inline:contain;scrollbar-color:#d66a5e #071a39;scrollbar-width:thin;white-space:nowrap;flex:1;justify-content:center;align-items:center;max-width:820px;display:flex;overflow-x:auto}.sectioned-app .site-header nav a{flex:none;padding:7px 14px;display:block!important}.sectioned-app .site-header nav a.active{color:#071a39;background:#fff6dd;border:2px outset #fff;text-decoration:none}.view-banner{color:#fffdf5;background:#05122af0;border:2px solid #8a9fbd;border-radius:14px;justify-content:space-between;align-items:center;gap:18px;width:calc(100% - 36px);max-width:1240px;margin:18px auto 0;padding:13px 18px;font-size:18px;display:flex}.view-banner a{color:#bcd1ff;text-underline-offset:3px;font-weight:800;text-decoration:underline}.view-banner span{color:#ffd86b;font-weight:800}@media (width<=980px){.sectioned-app .site-header{flex-wrap:wrap}.sectioned-app .site-header nav{order:3;justify-content:flex-start;width:100%;max-width:none}}@media (width<=650px){.sectioned-app .site-header{gap:8px}.sectioned-app .site-header nav{padding-bottom:7px}.sectioned-app .site-header nav a{padding:6px 11px;font-size:15px}.view-banner{flex-direction:column;align-items:flex-start;gap:3px;width:calc(100% - 16px);margin-top:10px}}:root{--retro-navy:#102b49;--retro-navy-2:#173c62;--retro-blue:#41689b;--retro-burgundy:#70475a;--retro-coral:#b87368;--retro-gold:#bda77e;--retro-line:#aaa48f}body,html[data-theme=dark] body,html:not([data-theme=dark]) body{background-color:#10233b!important;background-image:linear-gradient(#0f233ad1,#0f233ae6),url(/study-images/rt-pixel-collage-bg.png)!important}.retro-directory .site-header,.retro-directory .hero,.retro-directory .section{box-shadow:0 0 0 1px #ffffff1a,3px 3px #081526,6px 6px #b873684d,0 18px 42px #00000047}.retro-directory .section:before{opacity:.34}.retro-directory .hero-grid{grid-template-columns:minmax(0,.9fr) minmax(500px,1.1fr);gap:clamp(34px,5vw,70px)}.pixel-guide-card{background:#f6f0dd12;border:1px dashed #dfd2b38c;border-radius:16px;grid-template-columns:90px 1fr;align-items:center;gap:15px;max-width:510px;min-height:112px;margin-top:25px;padding:8px 17px 8px 10px;display:grid}.pixel-guide-card>img{filter:saturate(.78);height:90px;image-rendering:pixelated;object-fit:contain;transform-origin:50% 58%;width:90px;animation:3.1s steps(5,end) infinite guide-idle}.pixel-guide-card>div{gap:2px;display:grid}.pixel-guide-card span{color:#dfcda6;letter-spacing:.06em;text-transform:uppercase;font-size:15px;font-weight:800}.retro-directory .pixel-guide-card p{margin:0;color:#f1ead9!important;font-size:17px!important;line-height:1.42!important}.learning-directory{padding:22px}.directory-head{min-height:58px}.directory-head h2{font-size:32px}.directory-mascot{filter:saturate(.68)brightness(.98);height:66px;image-rendering:pixelated;object-fit:contain;transform-origin:50% 58%;width:66px;animation:3.4s steps(5,end) infinite mascot-idle}.directory-columns,.learning-directory>a{grid-template-columns:1.35fr .72fr .58fr}.learning-directory>a{gap:14px;min-height:68px;padding:10px 12px;transition:background-color .15s}.learning-directory>a:hover{background:#e9e2cf}.directory-label{align-items:center;gap:12px;min-width:0;display:flex}.directory-sprite{filter:saturate(.74)contrast(.95);height:44px;image-rendering:pixelated;object-fit:contain;flex:none;width:44px;animation:4.6s steps(2,end) infinite sprite-idle}.sprite-delay-2{animation-delay:-.4s}.sprite-delay-3{animation-delay:-.8s}.sprite-delay-4{animation-delay:-1.2s}.sprite-delay-5{animation-delay:-1.6s}.sprite-delay-6{animation-delay:-2s}.sprite-delay-7{animation-delay:-2.4s}.sprite-delay-8{animation-delay:-2.8s}.sprite-delay-9{animation-delay:-3.2s}html[data-theme=dark] .retro-directory .learning-directory>a:hover{background:#1d3551}html[data-theme=dark] .directory-sprite{filter:saturate(.68)brightness(1.08)}@keyframes sprite-idle{0%,42%,52%,to{transform:translateY(0)}46%,48%{transform:translateY(-2px)}}@keyframes guide-idle{0%,35%,to{transform:translateY(0)rotate(0)scale(1)}43%{transform:translateY(-7px)rotate(-4deg)scale(1.04,.96)}52%{transform:translateY(0)rotate(3deg)scale(.97,1.04)}61%{transform:translateY(-3px)rotate(-1deg)scale(1.02,.98)}70%{transform:translateY(0)rotate(0)scale(1)}}@keyframes mascot-idle{0%,30%,to{transform:translateY(0)rotate(0)scale(1)}40%{transform:translateY(-6px)rotate(-6deg)scale(1.04,.96)}50%{transform:translateY(1px)rotate(5deg)scale(.96,1.04)}60%{transform:translateY(-3px)rotate(-2deg)scale(1.02,.98)}72%{transform:translateY(0)rotate(0)scale(1)}}@media (prefers-reduced-motion:reduce){.directory-sprite,.directory-mascot,.pixel-guide-card>img{animation:none}}@media (width<=1100px){.retro-directory .hero-grid{grid-template-columns:1fr}.pixel-guide-card{max-width:620px}}@media (width<=650px){.pixel-guide-card{grid-template-columns:70px 1fr;min-height:96px}.pixel-guide-card>img{width:70px;height:70px}.retro-directory .pixel-guide-card p{font-size:16px!important}.directory-mascot{width:54px;height:54px}.directory-columns,.learning-directory>a{grid-template-columns:1.35fr .65fr}.directory-columns strong:last-child,.learning-directory>a>b{display:none}.directory-sprite{width:38px;height:38px}.directory-label{gap:9px}}.sprite-coach-feedback{grid-template-columns:108px minmax(0,1fr);align-items:end;gap:15px;margin:0 0 17px;display:grid}.sprite-coach-figure{justify-content:center;align-items:center;height:112px;display:flex;position:relative}.sprite-coach-figure img{filter:saturate(.74);height:104px;image-rendering:pixelated;object-fit:contain;transform-origin:50% 58%;width:104px}.sprite-coach-figure i{opacity:0;background:#d2a957;border:1px solid #fff0ae;width:7px;height:7px;position:absolute}.sprite-coach-figure i:first-of-type{top:8px;right:8px}.sprite-coach-figure i:nth-of-type(2){top:44px;right:-1px}.sprite-coach-figure i:nth-of-type(3){top:19px;left:5px}.sprite-coach-figure i:nth-of-type(4){bottom:7px;right:13px}.sprite-coach-figure i:nth-of-type(5){bottom:12px;left:12px}.sprite-coach-bubble{color:#172033;background:#fffaf0;border:2px solid #8f876f;border-radius:16px;min-height:100px;padding:15px 18px;position:relative;box-shadow:3px 3px #102b4929}.sprite-coach-bubble:before{content:"";background:#fffaf0;border-bottom:2px solid #8f876f;border-left:2px solid #8f876f;width:15px;height:15px;position:absolute;bottom:24px;left:-9px;transform:rotate(45deg)}.sprite-coach-bubble>span{color:#fff8e4;letter-spacing:.055em;text-transform:uppercase;background:#102b49;border:1px solid #375a7b;border-radius:7px;margin-bottom:7px;padding:5px 8px;font-size:15px;font-weight:900;display:inline-block}.retro-directory .sprite-coach-bubble>strong{line-height:1.25;display:block;color:#102b49!important;font-size:20px!important}.sprite-coach-bubble>div{margin-top:5px}.retro-directory .sprite-coach-bubble p{color:#26364d!important;margin:0!important;font-size:17px!important;line-height:1.5!important}.sprite-coach-feedback.celebrate .sprite-coach-figure img{animation:1.12s steps(7,end) both coach-hop,2.5s steps(4,end) 1.12s infinite coach-float}.sprite-coach-feedback.celebrate .sprite-coach-figure i{animation:1.18s steps(5,end) both coach-spark}.sprite-coach-feedback.review .sprite-coach-figure img{animation:1.05s steps(6,end) both coach-review,3s steps(4,end) 1.05s infinite coach-float}@keyframes coach-hop{0%{transform:translateY(0)rotate(0)scale(1)}18%{transform:translateY(4px)rotate(-3deg)scale(1.08,.9)}35%{transform:translateY(-13px)rotate(7deg)scale(.92,1.1)}53%{transform:translateY(0)rotate(-5deg)scale(1.08,.92)}68%{transform:translateY(-7px)rotate(3deg)scale(.96,1.06)}83%{transform:translateY(0)rotate(-1deg)scale(1.03,.97)}to{transform:translateY(0)rotate(0)scale(1)}}@keyframes coach-spark{0%,12%,to{opacity:0;transform:scale(.35)rotate(0)}26%,64%{opacity:1;transform:scale(1.15)rotate(45deg)}82%{opacity:0;transform:translateY(-9px)scale(.55)rotate(90deg)}}@keyframes coach-review{0%{transform:translateY(0)rotate(0)scale(1)}24%{transform:translateY(-5px)rotate(-6deg)scale(1.02,.98)}46%{transform:translateY(1px)rotate(4deg)scale(.98,1.02)}66%{transform:translateY(-4px)rotate(-3deg)scale(1.01,.99)}84%{transform:translateY(0)rotate(2deg)}to{transform:translateY(0)rotate(0)scale(1)}}@keyframes coach-float{0%,to{transform:translateY(0)rotate(0)}50%{transform:translateY(-4px)rotate(2deg)}}html[data-theme=dark] .sprite-coach-bubble{color:#172033;background:#f5efdf;border-color:#b6aa8f}html[data-theme=dark] .sprite-coach-bubble:before{background:#f5efdf;border-color:#b6aa8f}html[data-theme=dark] .sprite-coach-bubble>span{background:#102b49;border-color:#416b91;color:#fff8e4!important}html[data-theme=dark] .retro-directory .sprite-coach-bubble>strong{color:#102b49!important}html[data-theme=dark] .retro-directory .sprite-coach-bubble p{color:#26364d!important}@media (prefers-reduced-motion:reduce){.sprite-coach-feedback.celebrate .sprite-coach-figure img,.sprite-coach-feedback.celebrate .sprite-coach-figure i,.sprite-coach-feedback.review .sprite-coach-figure img{animation:none}.sprite-coach-figure i{display:none}}@media (width<=620px){.sprite-coach-feedback{grid-template-columns:76px minmax(0,1fr);align-items:start;gap:10px}.sprite-coach-figure{height:86px}.sprite-coach-figure img{width:76px;height:76px}.sprite-coach-bubble{padding:13px 14px}.retro-directory .sprite-coach-bubble>strong{font-size:18px!important}.retro-directory .sprite-coach-bubble p{font-size:16px!important}}.retro-directory .abg-values .oxygen-card,.retro-directory .oxygen-result{border-color:var(--retro-line);background:#fffaf0!important}.retro-directory .oxygen-result span{color:#70475a}html[data-theme=dark] .retro-directory .abg-values .oxygen-card,html[data-theme=dark] .retro-directory .oxygen-result{border-color:#7188a2;background:#203650!important}html[data-theme=dark] .retro-directory .oxygen-result span{color:#d8e6f5}.quick-ref-window{color:#172033;z-index:90;background:#f4ecd4;border:3px double #718096;border-radius:16px;grid-template-rows:auto auto minmax(0,1fr);width:min(410px,100vw - 24px);max-height:min(680px,100vh - 110px);transition:transform .3s,opacity .2s;display:grid;position:fixed;bottom:18px;right:18px;overflow:hidden;box-shadow:0 18px 50px #00000061,inset 0 1px #fff}.quick-ref-window.is-hidden{opacity:0;pointer-events:none;transform:translate(calc(100% + 32px))}.quick-ref-titlebar{color:#fff8e4;background:linear-gradient(#173d76,#0b2857);border-bottom:2px solid #718096;justify-content:space-between;align-items:center;min-height:51px;padding:7px 9px 7px 12px;display:flex}.quick-ref-titlebar>span{align-items:center;gap:9px;display:flex}.quick-ref-titlebar img{height:34px;image-rendering:pixelated;object-fit:contain;width:34px}.quick-ref-titlebar b{font-size:18px}.quick-ref-titlebar button{color:#102b49;cursor:pointer;background:linear-gradient(#fffdf4,#ded4bc);border:2px outset #fff6dc;border-radius:7px;width:40px;height:35px;font-size:24px;font-weight:900;line-height:24px}.quick-ref-tabs{background:#d8ceb4;border-bottom:1px solid #9a907a;grid-template-columns:1fr 1fr;padding:7px 7px 0;display:grid}.quick-ref-tabs button{color:#334255;cursor:pointer;background:#c8bea8;border:1px solid #8f876f;border-bottom:0;border-radius:9px 9px 0 0;padding:9px 7px;font-size:15px;font-weight:800}.quick-ref-tabs button.active{color:#102b49;background:#fffaf0;position:relative;top:1px}.quick-ref-body{background:#fffaf0;padding:13px;overflow:auto}.quick-ref-body>input{color:#172033;background:#fff;border:2px inset #d7c8a5;border-radius:7px;width:100%;padding:11px 12px;font-size:16px}.quick-ref-results{gap:8px;margin-top:11px;display:grid}.quick-ref-results article{background:#f6efde;border:1px solid #b7aa8e;border-radius:9px;padding:10px 11px}.quick-ref-results article>strong{color:#102b49;font-size:17px;display:block}.quick-ref-results article p{color:#39485b!important;margin:3px 0 0!important;font-size:15px!important;line-height:1.4!important}.quick-ref-results>a{color:#fff8e4;text-align:center;background:#173d76;border-radius:8px;margin-top:2px;padding:10px 12px;font-size:15px;font-weight:800}.quick-ref-empty{padding:15px 6px;color:#516177!important;font-size:15px!important}.norm-results article{gap:2px;display:grid}.norm-results article>span{color:#70475a;letter-spacing:.05em;text-transform:uppercase;font-size:11px;font-weight:900}.norm-results article>b{color:#0f6a59;font-size:16px}.norm-results article>small{color:#48596b;font-size:13px;line-height:1.35}.quick-ref-edge-tab{color:#fff8e4;cursor:pointer;z-index:90;background:linear-gradient(#173d76,#0b2857);border:3px double #afbdcb;border-radius:12px 0 0 12px;place-items:center;gap:3px;width:48px;padding:12px 7px;display:grid;position:fixed;top:50%;right:0;transform:translateY(-50%);box-shadow:0 10px 28px #00000057}.quick-ref-edge-tab span{color:#ffe19b;font-size:23px;font-weight:900;line-height:1}.quick-ref-edge-tab b{letter-spacing:.06em;text-transform:uppercase;writing-mode:vertical-rl;font-size:11px}.quick-ref-edge-tab:focus-visible,.quick-ref-titlebar button:focus-visible,.quick-ref-tabs button:focus-visible{outline-offset:2px;outline:3px solid #ffd86b}html[data-theme=dark] .quick-ref-window{color:#f7f2e5;background:#172a42;border-color:#8097b0}html[data-theme=dark] .quick-ref-tabs{background:#14263b;border-color:#7188a2}html[data-theme=dark] .quick-ref-tabs button{color:#dce9f5;background:#1a304a;border-color:#7188a2}html[data-theme=dark] .quick-ref-tabs button.active,html[data-theme=dark] .quick-ref-body{color:#f7f2e5;background:#203650}html[data-theme=dark] .quick-ref-body>input{color:#fff;background:#14263b;border-color:#7188a2}html[data-theme=dark] .quick-ref-results article{background:#172a42;border-color:#7188a2}html[data-theme=dark] .quick-ref-results article>strong{color:#fff8e4}html[data-theme=dark] .quick-ref-results article p{color:#d8e6f5!important}html[data-theme=dark] .norm-results article>b{color:#8de0c4}html[data-theme=dark] .norm-results article>small,html[data-theme=dark] .norm-results article>span{color:#d8e6f5}.norms-section{background:#f5efdf}.norms-caution{margin:30px 0}.norm-tools{gap:14px;margin:38px 0 28px;display:grid}.norm-tools>input{color:#172033;background:#fffaf0;border:2px inset #d2c39d;border-radius:999px;width:min(100%,620px);padding:15px 18px;font-size:18px}.norm-tools>p{color:#6b685f!important;margin:0!important;font-size:15px!important}.norm-filter{scrollbar-width:thin;gap:8px;padding:2px 2px 8px;display:flex;overflow-x:auto}.norm-filter button{color:#25374d;cursor:pointer;background:#eee5cf;border:1px solid #9f967f;border-radius:999px;flex:none;padding:9px 13px;font-size:14px;font-weight:800}.norm-filter button.active{color:#fff8e4;background:#173d76;border-color:#173d76}.norm-groups{gap:30px;display:grid}.norm-group{background:#efe5cb;border:1px solid #a59c87;border-radius:14px;overflow:hidden;box-shadow:3px 3px #102b4924}.norm-group-heading{color:#fff8e4;background:linear-gradient(#173d76,#0b2857);align-items:center;gap:13px;padding:13px 17px;display:flex}.norm-group-heading>span{color:#102b49;background:#fff6dd;border:2px outset #fff;justify-content:center;align-items:center;width:38px;height:34px;font-size:14px;font-weight:900;display:flex}.norm-group-heading h3{margin:0;font-family:Times New Roman,Times,serif;font-size:25px}.norm-grid{background:#b8af99;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;display:grid}.norm-grid article{background:#fffaf0;gap:7px;min-height:230px;padding:19px;display:grid}.norm-grid h4{color:#102b49;margin:0;font-family:Times New Roman,Times,serif;font-size:22px;line-height:1.15}.norm-grid article>strong{color:#0e6959;font-size:20px;line-height:1.25}.norm-grid article>span{color:#70475a;background:#efe4c8;border-left:4px solid #b87368;padding:7px 9px;font-size:14px;font-weight:800;line-height:1.4}.retro-directory .norm-grid article>p{color:#3e5066!important;margin:0!important;font-size:16px!important;line-height:1.48!important}.source-note{color:#fff8e4;background:#173d76;border:2px solid #7188a2;border-radius:12px;margin-top:30px;padding:18px}.source-note strong{font-size:18px}.retro-directory .source-note p{color:#e9f0f6!important;margin:4px 0 0!important;font-size:16px!important}html[data-theme=dark] .norms-section{background:#172a42!important}html[data-theme=dark] .norm-tools>input{color:#fff;background:#14263b;border-color:#7188a2}html[data-theme=dark] .norm-tools>p{color:#d8e6f5!important}html[data-theme=dark] .norm-filter button{color:#e7eff7;background:#1c334d;border-color:#7188a2}html[data-theme=dark] .norm-filter button.active{color:#102b49;background:#fff6dd}html[data-theme=dark] .norm-group{background:#14263b;border-color:#7188a2}html[data-theme=dark] .norm-grid{background:#526c88}html[data-theme=dark] .norm-grid article{background:#203650}html[data-theme=dark] .norm-grid h4{color:#fff8e4}html[data-theme=dark] .norm-grid article>strong{color:#8de0c4}html[data-theme=dark] .norm-grid article>span{color:#f2d9d5;background:#172a42;border-color:#d48a7e}html[data-theme=dark] .retro-directory .norm-grid article>p{color:#d8e6f5!important}@media (width<=980px){.norm-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=650px){.quick-ref-window{width:auto;max-height:calc(100vh - 78px);bottom:8px;left:8px;right:8px}.quick-ref-window.is-hidden{transform:translate(calc(100% + 24px))}.quick-ref-titlebar b{font-size:16px}.quick-ref-tabs button{font-size:14px}.norm-grid{grid-template-columns:1fr}.norm-grid article{min-height:0}.norm-tools>input{font-size:16px}.norm-group-heading h3{font-size:22px}}@media (prefers-reduced-motion:reduce){.quick-ref-window{transition:none}}.quick-ref-guide{background:#f0e5c9;border:1px dashed #9f9275;border-radius:10px;grid-template-columns:56px 1fr;align-items:center;gap:9px;margin-bottom:10px;padding:5px 10px 5px 5px;display:grid}.quick-ref-guide img{height:56px;image-rendering:pixelated;object-fit:contain;width:56px}.quick-ref-guide p{display:grid;margin:0!important}.quick-ref-guide strong{color:#102b49;font-size:16px}.quick-ref-guide span{color:#48596b;font-size:14px;line-height:1.35}html[data-theme=dark] .quick-ref-guide{background:#172a42;border-color:#7188a2}html[data-theme=dark] .quick-ref-guide strong{color:#fff8e4}html[data-theme=dark] .quick-ref-guide span{color:#d8e6f5}.retro-directory .hero-main h1,html[data-theme=dark] .retro-directory .hero-main h1{letter-spacing:-.045em;text-shadow:4px 0 #b87368,0 4px #b87368,4px 4px #102b49,8px 8px #05122ab8;-webkit-font-smoothing:none;font-family:"Press Start 2P",system-ui,sans-serif;font-size:clamp(32px,3.2vw,46px);font-style:normal;font-weight:400;line-height:1.22;color:#f0cf82!important}.retro-directory .hero-main h1 span,.retro-directory .hero-main h1 em{display:block}.retro-directory .hero-main h1 em,html[data-theme=dark] .retro-directory .hero-main h1 em{text-shadow:4px 0 #e4c77f,0 4px #e4c77f,4px 4px #102b49,8px 8px #05122ab8;font-style:normal;color:#c9796d!important}@media (width<=650px){.retro-directory .hero-main h1,html[data-theme=dark] .retro-directory .hero-main h1{letter-spacing:-.055em;text-shadow:3px 0 #b87368,0 3px #b87368,3px 3px #102b49,6px 6px #05122ab8;font-size:clamp(25px,7.7vw,34px);line-height:1.28}.retro-directory .hero-main h1 em,html[data-theme=dark] .retro-directory .hero-main h1 em{text-shadow:3px 0 #e4c77f,0 3px #e4c77f,3px 3px #102b49,6px 6px #05122ab8}}.header-controls{align-items:center;gap:8px;display:flex;position:relative}.theme-locker{position:relative}.locker-toggle{color:#102b49;cursor:pointer;text-align:left;background:linear-gradient(#fffaf0,#e8dcc0);border:2px outset #fff6dc;border-radius:11px;align-items:center;gap:8px;min-height:48px;padding:4px 10px 4px 5px;display:flex}.locker-toggle img{height:39px;image-rendering:pixelated;object-fit:contain;width:39px}.locker-toggle span{gap:1px;display:grid}.locker-toggle b{font-size:14px;line-height:1.1}.locker-toggle small{color:#70475a;letter-spacing:.02em;font-size:10px;font-weight:800;line-height:1.15}.locker-panel{color:#172033;z-index:140;background:#f5edda;border:4px double #8794a4;border-radius:17px;width:min(780px,100vw - 28px);max-height:calc(100vh - 112px);padding:19px;position:fixed;top:88px;right:18px;overflow:auto;box-shadow:0 24px 70px #00000085,inset 0 1px #fff}.locker-heading{color:#fff8e4;background:linear-gradient(#173d76,#0b2857);border-radius:11px;justify-content:space-between;align-items:start;gap:18px;margin:-7px -7px 18px;padding:17px 18px;display:flex}.locker-heading>div>span{color:#ffd978;letter-spacing:.08em;text-transform:uppercase;font-size:12px;font-weight:900}.locker-heading h2{margin:5px 0 7px;font-family:"Press Start 2P",monospace;font-size:20px;line-height:1.35;color:#fff8e4!important}.retro-directory .locker-heading p{max-width:620px;color:#e7eef7!important;margin:0!important;font-size:15px!important;line-height:1.42!important}.locker-heading>button{color:#102b49;cursor:pointer;background:#fff8e4;border:2px outset #fff;border-radius:8px;flex:none;width:41px;height:38px;font-size:27px;font-weight:900;line-height:25px}.locker-panel>section+section{border-top:2px dotted #aaa48f;margin-top:19px;padding-top:18px}.locker-panel h3{margin:0 0 11px;font-family:Times New Roman,Times,serif;font-size:22px;color:#102b49!important}.locker-theme-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.locker-theme-grid>button{color:#172033;cursor:pointer;text-align:left;background:#fffaf0;border:2px solid #b4a98f;border-radius:12px;gap:6px;min-height:124px;padding:12px;display:grid}.locker-theme-grid>button:hover{background:#eee5cf}.locker-theme-grid>button.selected{background:#fff7d9;border-color:#8a3654;box-shadow:0 0 0 3px #8a36542e}.locker-theme-grid b{color:#102b49;font-family:Times New Roman,Times,serif;font-size:18px}.locker-theme-grid small{color:#47566a;font-size:13px;line-height:1.35}.locker-swatches{gap:5px;display:flex}.locker-swatches i{border:1px solid #102b4959;border-radius:4px;width:29px;height:19px}.locker-expression-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:9px;display:grid}.locker-expression-grid>button{color:#25374d;cursor:pointer;text-transform:capitalize;background:#fffaf0;border:2px solid #b4a98f;border-radius:11px;place-items:center;gap:3px;padding:7px 5px 8px;display:grid}.locker-expression-grid>button:hover{background:#eee5cf}.locker-expression-grid>button.selected{background:#fff7d9;border-color:#8a3654;box-shadow:0 0 0 3px #8a36542e}.locker-expression-grid img{height:66px;image-rendering:pixelated;object-fit:contain;width:66px}.locker-expression-grid span{font-size:12px;font-weight:800;line-height:1.2}html[data-theme=dark] .locker-toggle{color:#fff8e4;background:linear-gradient(#2a4563,#17314f);border-color:#8097b0}html[data-theme=dark] .locker-toggle small{color:#ffd4cd}html[data-visual-theme] body{background-position:50%!important;background-repeat:no-repeat!important;background-size:cover!important;background-attachment:fixed!important}html[data-visual-theme=sunrise] .retro-directory{--retro-navy:#173d59;--retro-navy-2:#245979;--retro-blue:#5d86a0;--retro-burgundy:#81505d;--retro-coral:#c87969;--retro-gold:#d4b266}html[data-visual-theme=night] .retro-directory{--retro-navy:#171f48;--retro-navy-2:#263360;--retro-blue:#626eaa;--retro-burgundy:#765480;--retro-coral:#a97891;--retro-gold:#c8b470}html[data-visual-theme=crt] .retro-directory{--retro-navy:#3d273a;--retro-navy-2:#59334b;--retro-blue:#6f6079;--retro-burgundy:#7d344e;--retro-coral:#b76863;--retro-gold:#bf9a51}html[data-visual-theme=cloud] .retro-directory{--retro-navy:#1f4161;--retro-navy-2:#37688b;--retro-blue:#739bb5;--retro-burgundy:#7c5b73;--retro-coral:#c5897c;--retro-gold:#d3bc84}html[data-visual-theme=biodome] .retro-directory{--retro-navy:#153e43;--retro-navy-2:#24605f;--retro-blue:#4f7e78;--retro-burgundy:#68516b;--retro-coral:#b47769;--retro-gold:#c8ac67}html[data-visual-theme=sunrise] .retro-directory .hero{background-image:linear-gradient(90deg,#13344ced,#13344cc2),url(/study-images/themes/horizonrt-sunrise-shift.webp)!important;background-position:50%!important;background-size:cover!important}html[data-visual-theme=night] .retro-directory .hero{background-image:linear-gradient(90deg,#0a1435f0,#11193dc9),url(/study-images/themes/horizonrt-night-shift.webp)!important;background-position:50%!important;background-size:cover!important}html[data-visual-theme=crt] .retro-directory .hero{background-image:linear-gradient(90deg,#382035f0,#372033c7),url(/study-images/themes/horizonrt-crt-campus.webp)!important;background-position:50%!important;background-size:cover!important}html[data-visual-theme=cloud] .retro-directory .hero{background-image:linear-gradient(90deg,#1b3f5beb,#264e69b3),url(/study-images/themes/horizonrt-cloud-clinic.webp)!important;background-position:50%!important;background-size:cover!important}html[data-visual-theme=biodome] .retro-directory .hero{background-image:linear-gradient(90deg,#113e3ff0,#1c4a46ba),url(/study-images/themes/horizonrt-airway-biodome.webp)!important;background-position:50%!important;background-size:cover!important}html[data-visual-theme=sunrise] .retro-directory .site-header,html[data-visual-theme=sunrise] .retro-directory .view-banner{background:linear-gradient(#245979,#173d59)!important}html[data-visual-theme=night] .retro-directory .site-header,html[data-visual-theme=night] .retro-directory .view-banner{background:linear-gradient(#263360,#121a40)!important}html[data-visual-theme=crt] .retro-directory .site-header,html[data-visual-theme=crt] .retro-directory .view-banner{background:linear-gradient(#63384f,#3d273a)!important}html[data-visual-theme=cloud] .retro-directory .site-header,html[data-visual-theme=cloud] .retro-directory .view-banner{background:linear-gradient(#37688b,#1f4161)!important}html[data-visual-theme=biodome] .retro-directory .site-header,html[data-visual-theme=biodome] .retro-directory .view-banner{background:linear-gradient(#24605f,#153e43)!important}html[data-visual-theme=sunrise] .retro-directory .primary,html[data-visual-theme=sunrise] .sound-quiz-bar{background:linear-gradient(#c87969,#8b4f50)!important}html[data-visual-theme=night] .retro-directory .primary,html[data-visual-theme=night] .sound-quiz-bar{background:linear-gradient(#765480,#4d3b68)!important}html[data-visual-theme=crt] .retro-directory .primary,html[data-visual-theme=crt] .sound-quiz-bar{background:linear-gradient(#8b3d55,#5b293f)!important}html[data-visual-theme=cloud] .retro-directory .primary,html[data-visual-theme=cloud] .sound-quiz-bar{background:linear-gradient(#5885a1,#37688b)!important}html[data-visual-theme=biodome] .retro-directory .primary,html[data-visual-theme=biodome] .sound-quiz-bar{background:linear-gradient(#39766e,#245c59)!important}@media (width<=980px){.header-controls{margin-left:auto}.locker-panel{top:78px}}@media (width<=720px){.locker-toggle span{display:none}.locker-toggle{padding:4px}.locker-theme-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.locker-expression-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (width<=520px){.locker-panel{width:calc(100vw - 14px);max-height:calc(100vh - 84px);padding:13px;top:74px;right:7px}.locker-heading{padding:14px}.locker-heading h2{font-size:17px}.locker-theme-grid{grid-template-columns:1fr}.locker-expression-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.locker-expression-grid img{width:58px;height:58px}}.sound-player>span{image-rendering:pixelated;background-color:#c9796d!important;background-image:url(/study-images/pixel-icons/sounds.png)!important;background-position:50%!important;background-repeat:no-repeat!important;background-size:62px!important;font-size:0!important}.retro-directory .site-header{--header-pixel-a:#d6b56b;--header-pixel-b:#c9796d;--header-pixel-c:#7897aa;padding-bottom:19px}.retro-directory .site-header:after{background:repeating-linear-gradient(90deg,var(--header-pixel-a) 0 8px,transparent 8px 14px,var(--header-pixel-b) 14px 20px,transparent 20px 29px,var(--header-pixel-c) 29px 33px,transparent 33px 43px);content:"";opacity:.72;pointer-events:none;height:4px;position:absolute;bottom:5px;left:26px;right:26px}html[data-visual-theme=sunrise] .retro-directory .site-header{--header-pixel-a:#f0cb78;--header-pixel-b:#d98570;--header-pixel-c:#8eb0b5}html[data-visual-theme=night] .retro-directory .site-header{--header-pixel-a:#d3bd70;--header-pixel-b:#a986b2;--header-pixel-c:#6f83bd}html[data-visual-theme=crt] .retro-directory .site-header{--header-pixel-a:#d5aa58;--header-pixel-b:#bf6b68;--header-pixel-c:#8d7692}html[data-visual-theme=cloud] .retro-directory .site-header{--header-pixel-a:#f0d59a;--header-pixel-b:#d69a8a;--header-pixel-c:#96c1d4}html[data-visual-theme=biodome] .retro-directory .site-header{--header-pixel-a:#d1b96f;--header-pixel-b:#bb7b6b;--header-pixel-c:#75a89b}.sectioned-app .site-header nav a{align-items:center;gap:7px;display:inline-flex!important}.sectioned-app .site-header nav a:before{content:"";filter:saturate(.72)brightness(1.12);height:19px;image-rendering:pixelated;opacity:.78;background-position:50%;background-repeat:no-repeat;background-size:contain;width:19px}.sectioned-app .site-header nav a:hover:before,.sectioned-app .site-header nav a.active:before{filter:none;opacity:1}.sectioned-app .site-header nav a[href="#/home"]:before{background-image:url(/study-images/lung-sunrise-icon.png)}.sectioned-app .site-header nav a[href="#/patient-lab"]:before{background-image:url(/study-images/pixel-icons/patient.png)}.sectioned-app .site-header nav a[href="#/abg"]:before{background-image:url(/study-images/pixel-icons/abg.png)}.sectioned-app .site-header nav a[href="#/ecg"]:before{background-image:url(/study-images/pixel-icons/ecg.png)}.sectioned-app .site-header nav a[href="#/cxr"]:before{background-image:url(/study-images/pixel-icons/cxr.png)}.sectioned-app .site-header nav a[href="#/breath-sounds"]:before{background-image:url(/study-images/pixel-icons/sounds.png)}.sectioned-app .site-header nav a[href="#/diseases"]:before{background-image:url(/study-images/pixel-icons/diseases.png)}.sectioned-app .site-header nav a[href="#/norms"]:before{background-image:url(/study-images/pixel-icons/assessment.png)}.sectioned-app .site-header nav a[href="#/terms"]:before{background-image:url(/study-images/pixel-icons/terms.png)}.retro-directory .hero,html[data-theme=dark] .retro-directory .hero,html[data-visual-theme] .retro-directory .hero{padding:clamp(30px,4vw,58px) clamp(20px,4.5vw,74px) 30px;overflow:visible;box-shadow:none!important;background-color:#0000!important;background-image:none!important;border-color:#0000!important}.retro-directory .hero-grid{grid-template-columns:minmax(360px,.82fr) minmax(540px,1.18fr);align-items:start;gap:clamp(50px,7vw,112px)}.retro-directory .hero-main{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#071935e0;border:3px double #d2cab2d1;border-radius:19px;padding:clamp(25px,3vw,42px);box-shadow:0 18px 48px #00000052,inset 0 1px #ffffff21}.retro-directory .learning-directory{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#f8f1dded;box-shadow:0 18px 48px #0000004d,inset 0 0 0 4px #ffffff61}html[data-theme=dark] .retro-directory .learning-directory{background:#0f243be8!important}.retro-directory .hero-promise{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#f8f1dde8;width:86%;max-width:1040px;margin-left:auto;margin-right:auto}html[data-theme=dark] .retro-directory .hero-promise{background:#0f243be6!important}html[data-visual-theme=sunrise] body{background-image:linear-gradient(#0f233757,#0f233794),url(/study-images/themes/horizonrt-sunrise-shift.webp)!important}html[data-visual-theme=night] body{background-image:linear-gradient(#080e2270,#080e22b8),url(/study-images/themes/horizonrt-night-shift.webp)!important}html[data-visual-theme=crt] body{background-image:linear-gradient(#1e152663,#161221a3),url(/study-images/themes/horizonrt-crt-campus.webp)!important}html[data-visual-theme=cloud] body{background-image:linear-gradient(#1b314a38,#13263d7a),url(/study-images/themes/horizonrt-cloud-clinic.webp)!important}html[data-visual-theme=biodome] body{background-image:linear-gradient(#0d2a2a54,#0c242896),url(/study-images/themes/horizonrt-airway-biodome.webp)!important}@media (width<=1180px){.retro-directory .hero-grid{grid-template-columns:minmax(330px,.88fr) minmax(500px,1.12fr);gap:34px}.sectioned-app .site-header nav a{gap:5px}.sectioned-app .site-header nav a:before{width:17px;height:17px}}@media (width<=1060px){.retro-directory .hero-grid{grid-template-columns:1fr}.retro-directory .hero-main{max-width:720px}.retro-directory .learning-directory{margin-top:0}.retro-directory .hero-promise{width:100%}}@media (width<=650px){.retro-directory .site-header{padding-bottom:16px}.retro-directory .site-header:after{bottom:3px;left:14px;right:14px}.sectioned-app .site-header nav a:before{width:18px;height:18px}.retro-directory .hero,html[data-theme=dark] .retro-directory .hero,html[data-visual-theme] .retro-directory .hero{padding:22px 8px 18px}.retro-directory .hero-main{border-radius:14px;padding:25px 18px}.retro-directory .hero-grid{gap:20px}.retro-directory .hero-promise{width:100%}}.sectioned-app .site-header{isolation:isolate;flex-wrap:wrap;align-items:center;padding-bottom:15px;overflow:visible}.sectioned-app .site-header:after{display:none}.sectioned-app .site-header:before{border-radius:inherit;content:"";image-rendering:pixelated;opacity:.16;pointer-events:none;z-index:0;background-image:url(/study-images/rt-pixel-collage-bg.png);background-position:50% 46%;background-repeat:no-repeat;background-size:cover;position:absolute;inset:0}.sectioned-app .site-header>*{z-index:1;position:relative}html[data-visual-theme=sunrise] .sectioned-app .site-header:before{background-image:url(/study-images/themes/horizonrt-sunrise-shift.webp);background-position:50% 56%}html[data-visual-theme=night] .sectioned-app .site-header:before{background-image:url(/study-images/themes/horizonrt-night-shift.webp);background-position:50% 43%}html[data-visual-theme=crt] .sectioned-app .site-header:before{background-image:url(/study-images/themes/horizonrt-crt-campus.webp);background-position:50% 48%}html[data-visual-theme=cloud] .sectioned-app .site-header:before{opacity:.2;background-image:url(/study-images/themes/horizonrt-cloud-clinic.webp);background-position:50% 45%}html[data-visual-theme=biodome] .sectioned-app .site-header:before{background-image:url(/study-images/themes/horizonrt-airway-biodome.webp);background-position:50%}.sectioned-app .site-header nav{overscroll-behavior:auto;scrollbar-width:none;white-space:normal;flex-wrap:wrap;flex:650px;justify-content:center;gap:6px;max-width:none;display:flex;overflow:visible}.sectioned-app .site-header nav a{text-align:center;border:1px solid #fff3;border-radius:8px;padding:6px 10px;font-size:15px;text-decoration:none;display:block!important}.sectioned-app .site-header nav a:before{display:none!important}.sectioned-app .site-header nav a.active{border:2px outset #fff}.retro-directory,.retro-directory button,.retro-directory input,.retro-directory select,.retro-directory textarea,.retro-directory h1,.retro-directory h2,.retro-directory h3,.retro-directory h4,.retro-directory h5,.retro-directory h6{font-family:Times New Roman,Times,serif!important}.retro-directory .hero-main h1,html[data-theme=dark] .retro-directory .hero-main h1,.retro-directory .locker-heading h2,.retro-directory .sound-study-heading>span,.retro-directory .question-counter{font-family:"Press Start 2P",monospace!important}.retro-directory .sim-toolbar,.retro-directory .visual-quiz-bar,.retro-directory .sound-quiz-bar,.retro-directory .directory-columns,.retro-directory .norm-group-heading,.retro-directory .quick-ref-titlebar,.retro-directory .source-note,.retro-directory .view-banner{background:linear-gradient(var(--retro-navy-2),var(--retro-navy))!important;border-color:var(--retro-line)!important}.retro-directory .primary,.retro-directory .sim-toolbar button,.retro-directory .visual-quiz-bar button,.retro-directory .sound-quiz-bar button,.retro-directory .rhythm-tabs button.active,.retro-directory .image-tabs button.active,.retro-directory .filter-row button.active,.retro-directory .sound-tabs button.active,.retro-directory .norm-filter button.active{background:linear-gradient(var(--retro-coral),var(--retro-burgundy))!important;border-color:var(--retro-coral)!important;color:#fffaf0!important}.retro-directory .section,.retro-directory .learning-directory,.retro-directory .simulator,.retro-directory .visual-quiz,.retro-directory .sound-quiz,.retro-directory .guided-assessment,.retro-directory .disease-card,.retro-directory .rhythm-detail,.retro-directory .image-detail,.retro-directory .study-quiz,.retro-directory .norm-group,.retro-directory .term-grid article{border-color:var(--retro-line);border-radius:14px}.retro-directory button,.retro-directory input{border-radius:9px}html{--breathie-accessory-image:none}html[data-breathie-accessory=scrub-cap]{--breathie-accessory-image:url(/study-images/breathie-accessories/scrub-cap.png)}html[data-breathie-accessory=grad-cap]{--breathie-accessory-image:url(/study-images/breathie-accessories/grad-cap.png)}html[data-breathie-accessory=sunglasses]{--breathie-accessory-image:url(/study-images/breathie-accessories/sunglasses.png)}html[data-breathie-accessory=crown]{--breathie-accessory-image:url(/study-images/breathie-accessories/crown.png)}html[data-breathie-accessory=sprout]{--breathie-accessory-image:url(/study-images/breathie-accessories/sprout.png)}.locker-toggle{position:relative}.locker-toggle:after,.sprite-coach-figure:after,.pixel-guide-card:after,.directory-head:after,.quick-ref-titlebar>span:after,.quick-ref-guide:after{background-image:var(--breathie-accessory-image);content:"";image-rendering:pixelated;pointer-events:none;z-index:4;background-position:50%;background-repeat:no-repeat;background-size:contain;position:absolute}.locker-toggle:after{width:39px;height:39px;top:4px;left:5px}.sprite-coach-figure:after{width:104px;height:104px;inset:auto}.pixel-guide-card{position:relative}.pixel-guide-card:after{width:90px;height:90px;top:8px;left:10px}.directory-head{position:relative}.directory-head:after{width:66px;height:66px;top:50%;right:0;transform:translateY(-50%)}.quick-ref-titlebar>span{position:relative}.quick-ref-titlebar>span:after{width:34px;height:34px;top:50%;left:0;transform:translateY(-50%)}.quick-ref-guide{position:relative}.quick-ref-guide:after{width:56px;height:56px;top:5px;left:5px}.locker-accessory-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;display:grid}.locker-accessory-grid>button{color:#25374d;cursor:pointer;background:#fffaf0;border:2px solid #b4a98f;place-items:center;gap:6px;padding:9px 6px;display:grid}.locker-accessory-grid>button:hover{background:#eee5cf}.locker-accessory-grid>button.selected{border-color:var(--retro-burgundy);background:#fff7d9;box-shadow:0 0 0 3px #70475a2e}.locker-accessory-grid b{font-size:14px}.accessory-preview{width:82px;height:82px;position:relative}.accessory-preview img{height:82px;image-rendering:pixelated;object-fit:contain;width:82px;position:absolute;top:0;left:0}.accessory-preview .accessory-layer{z-index:2}@media (width<=1050px){.sectioned-app .site-header nav{flex-basis:100%;order:3}.sectioned-app .site-header nav a{flex:auto}.locker-accessory-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (width<=650px){.sectioned-app .site-header{padding-bottom:12px}.sectioned-app .site-header nav{justify-content:stretch;gap:5px;padding-bottom:0}.sectioned-app .site-header nav a{flex:calc(33.333% - 5px);padding:7px 5px;font-size:15px}.locker-accessory-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.pixel-guide-card:after{width:70px;height:70px;top:13px;left:10px}.directory-head:after{width:54px;height:54px}}html[data-visual-theme=sunrise] .retro-directory{--theme-page:#f3e5d7;--theme-panel:#fff8ec;--theme-panel-soft:#ead3c3;--theme-text:#17384f;--theme-muted:#40576a;--theme-border:#b88b7d}html[data-visual-theme=night] .retro-directory{--theme-page:#e8e4f1;--theme-panel:#f8f5fc;--theme-panel-soft:#d9d2e8;--theme-text:#252a50;--theme-muted:#515878;--theme-border:#9484ae}html[data-visual-theme=crt] .retro-directory{--theme-page:#e9dfca;--theme-panel:#f8f0df;--theme-panel-soft:#d9c6aa;--theme-text:#3e293a;--theme-muted:#675568;--theme-border:#9e7a77}html[data-visual-theme=cloud] .retro-directory{--theme-page:#e1eef3;--theme-panel:#f5fbfc;--theme-panel-soft:#cfe2e5;--theme-text:#1f4161;--theme-muted:#4f6a79;--theme-border:#83aebd}html[data-visual-theme=biodome] .retro-directory{--theme-page:#dfece3;--theme-panel:#f2f8ee;--theme-panel-soft:#c7dccd;--theme-text:#153e43;--theme-muted:#45625f;--theme-border:#789c88}html[data-theme=dark][data-visual-theme=sunrise] .retro-directory{--theme-page:#17384f;--theme-panel:#1f4860;--theme-panel-soft:#2a566b;--theme-text:#fff8e4;--theme-muted:#e1eaf0;--theme-border:#8daab5}html[data-theme=dark][data-visual-theme=night] .retro-directory{--theme-page:#151c41;--theme-panel:#202957;--theme-panel-soft:#303967;--theme-text:#fff8e4;--theme-muted:#e4e1f0;--theme-border:#8176a7}html[data-theme=dark][data-visual-theme=crt] .retro-directory{--theme-page:#3d273a;--theme-panel:#533047;--theme-panel-soft:#654057;--theme-text:#fff8e4;--theme-muted:#eee2e2;--theme-border:#a4767b}html[data-theme=dark][data-visual-theme=cloud] .retro-directory{--theme-page:#1f4161;--theme-panel:#2a5675;--theme-panel-soft:#386884;--theme-text:#fffaf0;--theme-muted:#e1edf2;--theme-border:#8eb6c6}html[data-theme=dark][data-visual-theme=biodome] .retro-directory{--theme-page:#153e43;--theme-panel:#205457;--theme-panel-soft:#2c6663;--theme-text:#fff8e4;--theme-muted:#dcebe5;--theme-border:#7aa395}html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .section{background:var(--theme-page)!important;border-color:var(--theme-border)!important;color:var(--theme-text)!important}html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .simulator,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .visual-quiz,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .sound-quiz,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .sound-study-card,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .sound-question,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .disease-card,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .rhythm-detail,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .image-detail,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .study-quiz,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .norm-group,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .norm-grid article,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .term-grid article{background:var(--theme-panel)!important;border-color:var(--theme-border)!important;color:var(--theme-text)!important}html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .presentation,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .guided-assessment,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .conduction-card,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .study-steps article,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .pattern-family article,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .profile-facts>div,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .rhythm-detail>div,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .sound-study-notes>div,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .bubble,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .why-panel,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .safety,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .abg-method article,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .abg-values article,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .sim-choices button:not(.correct):not(.incorrect):not(.reveal),html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .study-quiz-choices button:not(.correct):not(.incorrect):not(.reveal),html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .quiz-choices button:not(.correct):not(.incorrect):not(.reveal),html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .rhythm-tabs button,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .image-tabs button,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .sound-tabs button{background:var(--theme-panel-soft)!important;border-color:var(--theme-border)!important;color:var(--theme-text)!important}html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .rhythm-tabs button.active,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .image-tabs button.active,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .sound-tabs button.active{background:linear-gradient(var(--retro-coral),var(--retro-burgundy))!important;border-color:var(--retro-coral)!important;color:#fffaf0!important}html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .section h3,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .section h4,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .section strong{color:var(--theme-text)!important}html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .section p,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .section li,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .section-intro>p,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .pattern,html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .result-count{color:var(--theme-muted)!important}html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .sprite-coach-bubble{background:#f5efdf!important;border-color:#b6aa8f!important}html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .sprite-coach-bubble>strong{color:#102b49!important}html[data-visual-theme]:not([data-visual-theme=classic]) .retro-directory .sprite-coach-bubble p{color:#26364d!important}.retro-directory .section-intro h2,.retro-directory .terms-head h2{letter-spacing:-.045em;text-shadow:3px 0 0 var(--retro-gold),0 3px 0 var(--retro-gold),5px 5px 0 #05122a33;-webkit-font-smoothing:none;font-weight:400;line-height:1.34;color:var(--retro-navy)!important;font-family:"Press Start 2P",monospace!important;font-size:clamp(28px,3.35vw,47px)!important}.retro-directory .section-intro h2 em,.retro-directory .terms-head h2 em{text-shadow:3px 0 0 var(--retro-gold),0 3px 0 var(--retro-gold),5px 5px 0 #05122a47;font-style:normal;color:var(--retro-coral)!important}.retro-directory .cxr-section .section-intro h2,.retro-directory .disease-section .section-intro h2,.retro-directory .phrases-section .section-intro h2,html[data-theme=dark] .retro-directory .section-intro h2,html[data-theme=dark] .retro-directory .terms-head h2{text-shadow:3px 0 0 var(--retro-coral),0 3px 0 var(--retro-coral),5px 5px 0 #00000075;color:#fff8e4!important}.retro-directory .cxr-section .section-intro h2 em,.retro-directory .disease-section .section-intro h2 em,.retro-directory .phrases-section .section-intro h2 em,html[data-theme=dark] .retro-directory .section-intro h2 em,html[data-theme=dark] .retro-directory .terms-head h2 em{text-shadow:3px 0 0 var(--retro-burgundy),0 3px 0 var(--retro-burgundy),5px 5px 0 #00000075;color:var(--retro-gold)!important}@media (width<=650px){.retro-directory .section-intro h2,.retro-directory .terms-head h2{letter-spacing:-.05em;text-shadow:2px 0 0 var(--retro-gold),0 2px 0 var(--retro-gold),4px 4px 0 #05122a40;line-height:1.4;font-size:clamp(24px,7vw,32px)!important}}.pixel-guide-card:after{transform-origin:50% 58%;animation:3.1s steps(5,end) infinite guide-idle;display:block!important}.directory-head:after{transform-origin:50% 58%;animation:3.4s steps(5,end) infinite mascot-accessory-idle;display:block!important}@keyframes mascot-accessory-idle{0%,30%,to{transform:translateY(-50%)rotate(0)scale(1)}40%{transform:translateY(calc(-50% - 6px))rotate(-6deg)scale(1.04,.96)}50%{transform:translateY(calc(1px - 50%))rotate(5deg)scale(.96,1.04)}60%{transform:translateY(calc(-50% - 3px))rotate(-2deg)scale(1.02,.98)}72%{transform:translateY(-50%)rotate(0)scale(1)}}.sprite-coach-feedback.celebrate .sprite-coach-figure,.sprite-coach-feedback.review .sprite-coach-figure{transform-origin:50% 58%}.sprite-coach-feedback.celebrate .sprite-coach-figure{animation:1.12s steps(7,end) both coach-hop,2.5s steps(4,end) 1.12s infinite coach-float}.sprite-coach-feedback.review .sprite-coach-figure{animation:1.05s steps(6,end) both coach-review,3s steps(4,end) 1.05s infinite coach-float}.sprite-coach-feedback.celebrate .sprite-coach-figure img,.sprite-coach-feedback.review .sprite-coach-figure img{animation:none!important}@media (prefers-reduced-motion:reduce){.sprite-coach-feedback.celebrate .sprite-coach-figure,.sprite-coach-feedback.review .sprite-coach-figure,.pixel-guide-card:after,.directory-head:after{animation:none!important}}.retro-directory .site-header .brand-icon{width:74px;height:74px}@media (width<=650px){.retro-directory .site-header .brand-icon{width:58px;height:58px}}.weekly-story-section,.about-section{--editorial-panel:var(--theme-panel,#fffaf0);--editorial-soft:var(--theme-panel-soft,#e9e0cb);--editorial-text:var(--theme-text,#102b49);--editorial-muted:var(--theme-muted,#41576a);--editorial-border:var(--theme-border,#b4a98f)}.story-feature{background:var(--editorial-panel);border:3px double var(--editorial-border);border-radius:18px;grid-template-columns:230px minmax(0,1fr);margin:38px 0 46px;display:grid;overflow:hidden;box-shadow:0 14px 28px #05183021}.story-rail{background:linear-gradient(155deg,var(--retro-navy-2),var(--retro-navy));border-right:3px double var(--retro-line);color:#fff8e4;text-align:center;align-content:start;justify-items:center;gap:14px;padding:30px 24px;display:grid;position:relative}.story-breathie-figure:after,.about-breathie-figure:after{background-image:var(--breathie-accessory-image);content:"";image-rendering:pixelated;pointer-events:none;z-index:3;background-position:50%;background-repeat:no-repeat;background-size:contain;position:absolute}.story-breathie-figure{width:126px;height:126px;animation:3.2s steps(4,end) infinite coach-float;position:relative}.story-breathie-figure:after{inset:0}.story-breathie-figure img{height:100%;image-rendering:pixelated;object-fit:contain;width:100%;display:block}.story-rail span{background:var(--retro-burgundy);border:2px outset var(--retro-coral);color:#fffaf0;border-radius:7px;padding:8px 9px;font-family:"Press Start 2P",monospace;font-size:11px;line-height:1.55}.story-rail b{color:#ffe19a;font-size:19px}.story-copy{padding:clamp(28px,4vw,52px)}.story-category{color:var(--retro-burgundy);letter-spacing:.02em;text-transform:uppercase;font-family:"Press Start 2P",monospace;font-size:11px;line-height:1.5}.retro-directory .story-copy h3{letter-spacing:-.035em;margin:17px 0 18px;font-size:clamp(34px,4.6vw,58px);font-weight:400;line-height:1.02;color:var(--editorial-text)!important}.retro-directory .story-copy>p{color:var(--editorial-muted)!important;font-size:20px!important;line-height:1.65!important}.retro-directory .story-copy .story-hook{margin-bottom:22px;font-style:italic;color:var(--editorial-text)!important;font-size:24px!important;line-height:1.45!important}.story-copy aside{background:var(--editorial-soft);border:2px solid var(--editorial-border);border-radius:13px;margin:28px 0 24px;padding:19px 21px}.retro-directory .story-copy aside strong{font-size:19px;color:var(--editorial-text)!important}.retro-directory .story-copy aside p{margin:7px 0 0;color:var(--editorial-muted)!important;font-size:18px!important;line-height:1.55!important}.story-copy small{color:var(--editorial-muted);margin-top:12px;font-size:15px;display:block}.story-archive{border-top:2px dotted var(--editorial-border);padding-top:34px}.story-archive>div:first-child{justify-content:space-between;align-items:end;margin-bottom:18px;display:flex}.retro-directory .story-archive h3{margin:0;font-size:34px;color:var(--editorial-text)!important}.story-archive-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.story-archive-grid button{background:var(--editorial-panel);border:2px solid var(--editorial-border);color:var(--editorial-text);cursor:pointer;text-align:left;border-radius:12px;grid-template-columns:38px 1fr;gap:5px;padding:16px;display:grid}.story-archive-grid button:hover{background:var(--editorial-soft)}.story-archive-grid button.active{background:var(--editorial-soft);border-color:var(--retro-burgundy);box-shadow:inset 0 0 0 2px #b8736840}.story-archive-grid button>span{color:var(--retro-burgundy);grid-row:1/3;padding-top:4px;font-family:"Press Start 2P",monospace;font-size:11px}.story-archive-grid button>strong{font-size:18px;line-height:1.25;color:var(--editorial-text)!important}.story-archive-grid button>small{color:var(--editorial-muted);font-size:14px}.story-caution{margin-top:34px}.about-hero{grid-template-columns:minmax(290px,.72fr) minmax(0,1.28fr);gap:24px;margin:38px 0;display:grid}.about-breathie{background:linear-gradient(155deg,var(--retro-navy-2),var(--retro-navy));border:3px double var(--retro-line);color:#fff8e4;border-radius:16px;grid-template-columns:140px 1fr;align-items:center;gap:8px;padding:20px;display:grid;position:relative;overflow:hidden}.about-breathie-figure{width:140px;height:140px;animation:3.2s steps(4,end) infinite coach-float;position:relative}.about-breathie-figure:after{inset:0}.about-breathie img{height:100%;image-rendering:pixelated;object-fit:contain;width:100%;display:block}.about-breathie span{color:#ffd071;margin-bottom:8px;font-family:"Press Start 2P",monospace;font-size:10px;line-height:1.55;display:block}.about-breathie strong{font-size:23px;line-height:1.25;color:#fff8e4!important}.about-letter{background:var(--editorial-panel);border:3px double var(--editorial-border);border-radius:16px;padding:28px}.retro-directory .about-letter p{margin:0 0 16px;color:var(--editorial-muted)!important;font-size:20px!important;line-height:1.65!important}.retro-directory .about-letter p:last-child{margin-bottom:0}.about-values{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:36px 0;display:grid}.about-values article{background:var(--editorial-panel);border:2px solid var(--editorial-border);border-radius:14px;padding:24px;position:relative}.about-values article>span{color:var(--retro-burgundy);font-family:"Press Start 2P",monospace;font-size:12px}.retro-directory .about-values h3{margin:14px 0 9px;font-size:27px;color:var(--editorial-text)!important}.retro-directory .about-values p{margin:0;color:var(--editorial-muted)!important;font-size:18px!important;line-height:1.55!important}.about-actions{background:var(--editorial-soft);border:3px double var(--editorial-border);border-radius:16px;justify-content:space-between;align-items:center;gap:24px;margin:38px 0;padding:25px;display:flex}.retro-directory .about-actions h3{margin:0;font-size:31px;color:var(--editorial-text)!important}.about-actions>div:last-child{flex-wrap:wrap;justify-content:flex-end;gap:10px;display:flex}.sprite-delay-10{animation-delay:-3.6s}.sprite-delay-11{animation-delay:-4s}.sprite-delay-12{animation-delay:-4.4s}@media (prefers-reduced-motion:reduce){.story-breathie-figure,.about-breathie-figure{animation:none!important}}@media (width<=860px){.story-feature{grid-template-columns:1fr}.story-rail{border-bottom:3px double var(--retro-line);text-align:left;border-right:0;grid-template-columns:110px 1fr auto;place-items:center start}.story-breathie-figure{width:110px;height:110px}.about-hero{grid-template-columns:1fr}}@media (width<=650px){.story-rail{grid-template-columns:88px 1fr}.story-breathie-figure{width:88px;height:88px}.story-rail b{grid-column:2}.story-archive-grid,.about-values{grid-template-columns:1fr}.story-archive>div:first-child{align-items:flex-start;display:block}.about-breathie{grid-template-columns:100px 1fr}.about-breathie-figure{width:100px;height:100px}.about-actions{align-items:flex-start;display:block}.about-actions>div:last-child{justify-content:flex-start;margin-top:18px}.about-actions .button{width:100%}}html[data-theme=dark] .weekly-story-section,html[data-theme=dark] .about-section{--editorial-panel:var(--theme-panel,#172b44);--editorial-soft:var(--theme-panel-soft,#263f5e);--editorial-text:var(--theme-text,#fff8e4);--editorial-muted:var(--theme-muted,#e5edf5);--editorial-border:var(--theme-border,#9eb4ca)}html[data-theme=dark] .retro-directory .story-feature,html[data-theme=dark] .retro-directory .about-letter,html[data-theme=dark] .retro-directory .about-values article{background:var(--editorial-panel)!important;border-color:var(--editorial-border)!important;color:var(--editorial-text)!important}html[data-theme=dark] .retro-directory .story-copy aside,html[data-theme=dark] .retro-directory .about-actions,html[data-theme=dark] .retro-directory .story-archive-grid button,html[data-theme=dark] .retro-directory .story-archive-grid button:hover,html[data-theme=dark] .retro-directory .story-archive-grid button.active{background:var(--editorial-soft)!important;border-color:var(--editorial-border)!important;color:var(--editorial-text)!important}html[data-theme=dark] .retro-directory .story-category,html[data-theme=dark] .retro-directory .story-archive-grid button>span,html[data-theme=dark] .retro-directory .about-values article>span{color:#ffd071!important}html[data-theme=dark] .retro-directory .story-copy small,html[data-theme=dark] .retro-directory .story-archive-grid button>small{color:var(--editorial-muted)!important}html[data-theme=dark] .retro-directory .weekly-story-section .secondary,html[data-theme=dark] .retro-directory .about-section .secondary{background:var(--editorial-panel)!important;border-color:var(--editorial-border)!important;color:var(--editorial-text)!important}.feedback-section{--feedback-panel:var(--theme-panel,#fffaf0);--feedback-soft:var(--theme-panel-soft,#e9e0cb);--feedback-text:var(--theme-text,#102b49);--feedback-muted:var(--theme-muted,#41576a);--feedback-border:var(--theme-border,#b4a98f)}.feedback-layout{grid-template-columns:minmax(290px,.78fr) minmax(0,1.22fr);gap:24px;margin-top:38px;display:grid}.feedback-guide{gap:18px;display:grid}.feedback-breathie{background:linear-gradient(155deg,var(--retro-navy-2),var(--retro-navy));border:3px double var(--retro-line);color:#fff8e4;border-radius:16px;grid-template-columns:126px 1fr;align-items:center;gap:12px;padding:22px;display:grid}.feedback-breathie-figure{width:126px;height:126px;animation:3.2s steps(4,end) infinite coach-float;position:relative}.feedback-breathie-figure:after{background-image:var(--breathie-accessory-image);content:"";image-rendering:pixelated;pointer-events:none;z-index:3;background-position:50%;background-repeat:no-repeat;background-size:contain;position:absolute;inset:0}.feedback-breathie img{height:100%;image-rendering:pixelated;object-fit:contain;width:100%;display:block}.feedback-breathie span{color:#ffd071;margin-bottom:9px;font-family:"Press Start 2P",monospace;font-size:10px;line-height:1.55;display:block}.feedback-breathie strong{font-size:21px;line-height:1.3;color:#fff8e4!important}.feedback-expectations{background:var(--feedback-panel);border:3px double var(--feedback-border);color:var(--feedback-text);border-radius:16px;padding:26px}.retro-directory .feedback-expectations h3{margin:0 0 12px;font-size:29px;color:var(--feedback-text)!important}.retro-directory .feedback-expectations li{line-height:1.55;color:var(--feedback-muted)!important;font-size:18px!important}.feedback-expectations aside{background:var(--feedback-soft);border:2px solid var(--feedback-border);border-radius:12px;margin-top:22px;padding:17px}.retro-directory .feedback-expectations aside strong{color:var(--feedback-text)!important}.retro-directory .feedback-expectations aside p{margin:6px 0 0;color:var(--feedback-muted)!important;font-size:17px!important;line-height:1.5!important}.feedback-form{background:var(--feedback-panel);border:3px double var(--feedback-border);color:var(--feedback-text);border-radius:16px;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;padding:clamp(22px,4vw,34px);display:grid}.feedback-form label{gap:8px;display:grid}.feedback-form label>span{color:var(--feedback-text);font-size:17px;font-weight:700}.feedback-form label>span small{color:var(--feedback-muted);font-size:14px;font-weight:400}.feedback-form input,.feedback-form select,.feedback-form textarea{background:var(--feedback-soft);border:2px solid var(--feedback-border);color:var(--feedback-text);border-radius:10px;width:100%;padding:13px;font-family:Times New Roman,Times,serif;font-size:18px;line-height:1.45}.feedback-form textarea{resize:vertical}.feedback-form input::placeholder,.feedback-form textarea::placeholder{color:var(--feedback-muted);opacity:1}.feedback-form input:focus,.feedback-form select:focus,.feedback-form textarea:focus{border-color:var(--retro-coral);outline-offset:1px;outline:3px solid #e8897447}.feedback-form label>small{color:var(--feedback-muted);text-align:right;font-size:14px}.feedback-full{grid-column:1/-1}.feedback-submit{justify-content:space-between;align-items:center;gap:16px;display:flex}.feedback-submit button:disabled{cursor:wait;opacity:.72}.retro-directory .feedback-submit p{max-width:340px;margin:0;color:var(--feedback-muted)!important;font-size:15px!important;line-height:1.4!important}.feedback-status{border:2px solid;border-radius:12px;padding:16px 18px}.feedback-status.success{color:#143f2a;background:#d9f1e2;border-color:#3e8a5a}.feedback-status.error{color:#5f221f;background:#ffe5e0;border-color:#a94c45}.retro-directory .feedback-status strong{font-size:19px;color:inherit!important}.retro-directory .feedback-status p{margin:5px 0 0;color:inherit!important;font-size:16px!important}.feedback-honeypot{width:1px!important;height:1px!important;position:absolute!important;left:-10000px!important;overflow:hidden!important}.sprite-delay-13{animation-delay:-4.8s}html[data-theme=dark] .feedback-section{--feedback-panel:var(--theme-panel,#172b44);--feedback-soft:var(--theme-panel-soft,#263f5e);--feedback-text:var(--theme-text,#fff8e4);--feedback-muted:var(--theme-muted,#e5edf5);--feedback-border:var(--theme-border,#9eb4ca)}html[data-theme=dark] .retro-directory .feedback-form,html[data-theme=dark] .retro-directory .feedback-expectations{background:var(--feedback-panel)!important;border-color:var(--feedback-border)!important;color:var(--feedback-text)!important}html[data-theme=dark] .retro-directory .feedback-form input,html[data-theme=dark] .retro-directory .feedback-form select,html[data-theme=dark] .retro-directory .feedback-form textarea,html[data-theme=dark] .retro-directory .feedback-expectations aside{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;background:var(--feedback-soft)!important;border-color:var(--feedback-border)!important;color:var(--feedback-text)!important}@media (prefers-reduced-motion:reduce){.feedback-breathie-figure{animation:none!important}}@media (width<=900px){.feedback-layout{grid-template-columns:1fr}.feedback-guide{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=650px){.feedback-guide,.feedback-form{grid-template-columns:1fr}.feedback-full{grid-column:auto}.feedback-breathie{grid-template-columns:90px 1fr}.feedback-breathie-figure{width:90px;height:90px}.feedback-submit{align-items:flex-start;display:grid}.feedback-submit .button{width:100%}}.feedback-admin{color:#f7f2e5;background:#0d2038;min-height:100vh;padding:clamp(24px,5vw,64px);font-family:Times New Roman,Times,serif}.feedback-admin>header{border-bottom:2px dotted #9eb4ca;justify-content:space-between;align-items:end;gap:24px;max-width:1100px;margin:0 auto 28px;padding-bottom:24px;display:flex}.feedback-admin>header p{color:#ffd071;font-family:"Press Start 2P",monospace;font-size:10px}.feedback-admin h1{margin:10px 0;font-family:"Press Start 2P",monospace;font-size:clamp(26px,4vw,46px);line-height:1.35}.feedback-admin>header span{color:#dce7f0;font-size:17px}.feedback-admin a{color:#ffd071}.feedback-admin>section{gap:14px;max-width:1100px;margin:auto;display:grid}.feedback-admin article,.admin-empty,.admin-message{background:#192f4a;border:2px solid #7895b2;border-radius:14px;padding:22px}.feedback-admin article>div,.feedback-admin article>footer{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.feedback-admin article>div span{color:#fff8e4;background:#71334a;border-radius:99px;padding:5px 10px}.feedback-admin article time,.feedback-admin article footer{color:#dce7f0;font-size:14px}.feedback-admin article>p{color:#fff8e4;font-size:19px;line-height:1.6}.feedback-admin article>footer{justify-content:flex-start}.feedback-admin article>footer small{margin-left:auto}.admin-message{max-width:680px;margin:10vh auto}.admin-message h1{font-size:34px}.admin-message p{font-size:19px;line-height:1.55}.patient-context{border-bottom:2px solid var(--retro-line);background:#f7f0df;padding:26px 28px}.context-heading{justify-content:space-between;align-items:center;gap:24px;margin-bottom:18px;display:flex}.context-heading>div span{color:var(--retro-burgundy);margin-bottom:7px;font-family:"Press Start 2P",monospace;font-size:10px;line-height:1.5;display:block}.context-heading>div strong{font-size:24px;color:var(--retro-navy)!important}.context-heading blockquote{color:#24364d;background:#fffaf0;border:2px solid #c5b99e;border-radius:12px;max-width:470px;margin:0;padding:13px 16px;font-size:19px;font-style:italic;line-height:1.45}.context-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.context-grid article{background:#fffaf0;border:2px solid #c5b99e;border-radius:12px;padding:17px}.context-grid article>span{color:var(--retro-burgundy);letter-spacing:.04em;text-transform:uppercase;font-size:14px;font-weight:700}.retro-directory .context-grid p{margin:7px 0 0;color:#30445a!important;font-size:17px!important;line-height:1.55!important}html[data-theme=dark] .retro-directory .patient-context{background:var(--theme-panel,#172b44)!important;border-color:var(--theme-border,#9eb4ca)!important}html[data-theme=dark] .retro-directory .context-grid article,html[data-theme=dark] .retro-directory .context-heading blockquote{background:var(--theme-panel-soft,#263f5e)!important;border-color:var(--theme-border,#9eb4ca)!important;color:var(--theme-text,#fff8e4)!important}html[data-theme=dark] .retro-directory .context-heading>div strong,html[data-theme=dark] .retro-directory .context-grid p{color:var(--theme-text,#fff8e4)!important}html[data-theme=dark] .retro-directory .context-heading>div span,html[data-theme=dark] .retro-directory .context-grid article>span{color:#ffd071!important}@media (width<=760px){.context-heading{align-items:flex-start;display:grid}.context-heading blockquote{max-width:none}.context-grid{grid-template-columns:1fr}.patient-context{padding:21px 18px}}.learning-directory a[href="#/weekly-story"] .directory-sprite{content:url(/study-images/pixel-icons/weekly-rt-story.png)}.learning-directory a[href="#/about"] .directory-sprite{content:url(/study-images/pixel-icons/about-horizonrt.png)}.learning-directory a[href="#/feedback"] .directory-sprite{content:url(/study-images/pixel-icons/feedback.png)}.front-shortcuts{z-index:5;gap:10px;margin:12px 18px -2px;display:flex;position:relative}.front-shortcut{color:#071a39;background:linear-gradient(#fffaf0,#e5d9bd);border:3px outset #fff3d2;border-radius:9px;align-items:center;gap:9px;min-height:48px;padding:6px 14px;font-size:17px;text-decoration:none;transition:transform .15s,filter .15s;display:inline-flex;box-shadow:3px 3px #071a39,5px 5px #d66a5e73}.front-shortcut:hover,.front-shortcut:focus-visible{filter:brightness(1.06);transform:translate(-1px,-1px)}.front-shortcut img,.money-icon{height:34px;image-rendering:pixelated;object-fit:contain;width:34px}.money-icon{color:#0b2c58;background:#f2b821;border:3px solid #0b2c58;border-radius:50%;justify-content:center;align-items:center;font-size:16px;line-height:1;display:inline-flex;box-shadow:inset 0 0 0 2px #ffe68d;font-family:"Press Start 2P",monospace!important}html[data-theme=dark] .front-shortcut{color:#fff8e4;background:linear-gradient(#243b55,#162b45);border-color:#91a9c3}@media (width<=650px){.front-shortcuts{margin:10px 8px 0}.front-shortcut{flex:1;justify-content:center;padding:6px 10px}}.story-breathie-figure:after,.about-breathie-figure:after,.feedback-breathie-figure:after,.donate-breathie:after{inset:0;transform:translateZ(0)}.sprite-coach-figure{overflow:hidden}.sprite-coach-figure i{display:none!important}@media (width<=620px){.sprite-coach-figure:after{width:76px;height:76px}}.breath-sounds-section>.section-intro>p{display:none}.donate-card{background:var(--theme-panel,#fffaf0);border:3px double var(--theme-border,#b4a98f);border-radius:18px;grid-template-columns:190px minmax(0,1fr);align-items:center;gap:30px;margin:38px 0 24px;padding:clamp(24px,5vw,48px);display:grid}.donate-breathie{width:180px;height:180px;animation:3.2s steps(4,end) infinite coach-float;position:relative}.donate-breathie:after{background-image:var(--breathie-accessory-image);content:"";image-rendering:pixelated;pointer-events:none;z-index:3;background-position:50%;background-repeat:no-repeat;background-size:contain;position:absolute}.donate-breathie img{height:100%;image-rendering:pixelated;object-fit:contain;width:100%}.donate-card span{color:var(--retro-burgundy);font-family:"Press Start 2P",monospace;font-size:12px}.retro-directory .donate-card h3{margin:12px 0;font-size:clamp(28px,4vw,46px)}.retro-directory .donate-card p{font-size:19px!important;line-height:1.55!important}.footer-links{flex-wrap:wrap;gap:16px;display:flex}html[data-theme=dark] .donate-card{background:var(--theme-panel,#172b44);border-color:var(--theme-border,#9eb4ca)}@media (prefers-reduced-motion:reduce){.donate-breathie{animation:none!important}}@media (width<=650px){.donate-card{text-align:center;grid-template-columns:1fr}.donate-breathie{width:140px;height:140px;margin:auto}.donate-card .button{width:100%}}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}