*{box-sizing:border-box}
:root{color-scheme:light;--paper:#faf9f5;--ink:#081a30;--muted:#52616a;--teal:#087b80;--line:#d7e1dc;--panel:#eef3ef}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 Arial,sans-serif}
button,select,input,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-underline-offset:5px}
button,a,select{-webkit-tap-highlight-color:transparent}
[hidden]{display:none!important}:focus-visible{outline:3px solid #9b70b6;outline-offset:5px}
.site-header{max-width:1120px;margin:auto;padding:22px 28px;display:flex;align-items:center;gap:24px;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;letter-spacing:.22em;font-size:18px;flex-shrink:0}
.brand img{border-radius:50%;background:#f4f1eb;mix-blend-mode:multiply;object-fit:contain}
.brand b{color:#159c9f;font-weight:500}.brand small{display:block;font-size:12px;letter-spacing:.16em;margin-top:1px}
nav{display:flex;gap:10px;align-items:center;margin-left:auto}nav a,nav button{border:0;background:none;text-decoration:none;color:var(--muted);padding:10px 12px;font-size:14px;border-radius:25px}
nav [aria-current=page]{color:var(--teal);background:#e5efeb}.settings-link{font-size:14px}
main{max-width:1020px;margin:auto;padding:0 26px}h1{font-size:clamp(35px,5vw,52px);line-height:1.15;letter-spacing:-.025em;font-weight:400;margin:15px 0}
h2{font-size:28px;font-weight:400;line-height:1.2;margin:10px 0}h3{font-size:28px;font-weight:400;line-height:1.2}
.eyebrow{font-size:12px;letter-spacing:.18em;color:#287c7f;margin:0}
.intro{font-size:18px;color:var(--muted);max-width:630px;margin:18px auto;line-height:1.6}
.small{font-size:14px;color:var(--muted)}.quiet{border:0;background:transparent;color:var(--teal);padding:9px 12px;text-decoration:none;display:inline-block}
.secondary{border:0;border-radius:40px;background:var(--teal);color:#fff;padding:13px 25px;min-width:180px}.secondary:hover{background:#06666b}
.arrival{text-align:center;padding:30px 0 24px}.settings{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin:22px 0}
.settings label{text-align:left;font-size:14px;color:var(--muted);min-width:120px}
select{display:block;max-width:100%;border:1px solid #c6d5d2;background:var(--paper);color:var(--ink);border-radius:10px;padding:10px 12px;margin-top:5px}
.brain-button{position:relative;display:block;width:clamp(190px,27vw,240px);height:clamp(190px,27vw,240px);margin:20px auto 10px;border:1px solid var(--line);border-radius:50%;overflow:hidden;padding:0;background:#f8f7f2;box-shadow:0 12px 40px #173f4110;isolation:isolate;touch-action:manipulation}
.brain-button:hover{border-color:#169c9f;box-shadow:0 12px 38px #087b801c}
.brain-button:active{box-shadow:0 3px 14px #087b8029}
.brain-button img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;pointer-events:none;mix-blend-mode:multiply}
.brain-structure{filter:grayscale(1);opacity:1}
.idle-brain .brain-structure{filter:none}
.brain-colour{opacity:0}
.active-brain .colour-one{-webkit-mask-image:radial-gradient(ellipse at 34% 38%,#000 12%,transparent 55%);mask-image:radial-gradient(ellipse at 34% 38%,#000 12%,transparent 55%);animation:ink-current 7.4s ease-in-out infinite}
.active-brain .colour-two{-webkit-mask-image:radial-gradient(ellipse at 69% 36%,#000 12%,transparent 54%);mask-image:radial-gradient(ellipse at 69% 36%,#000 12%,transparent 54%);animation:ink-current 11.3s ease-in-out -3s infinite}
.active-brain .colour-three{-webkit-mask-image:radial-gradient(ellipse at 48% 66%,#000 8%,transparent 57%);mask-image:radial-gradient(ellipse at 48% 66%,#000 8%,transparent 57%);animation:ink-current 9.1s ease-in-out -5s infinite}
@keyframes ink-current{0%,100%{opacity:.12}46%,60%{opacity:1}}
.relax-brain .brain-colour{animation-duration:14s}
.brain-caption{margin:10px 0 0;font-size:16px;color:var(--teal)}.arrival-actions{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:10px}
.practice{padding:22px 0;text-align:center}.practice-tools{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:24px}
.practice h1{font-size:clamp(32px,4.7vw,46px)}.phase-next{display:block;margin:5px auto;font-size:18px}.motion-note{font-size:12px;color:var(--muted);margin:15px 0 0}
.method{max-width:710px;margin:15px auto;border-top:1px solid var(--line);padding:10px 0}.method summary{cursor:pointer;padding:12px 0;color:var(--teal)}
.method ol{list-style:decimal-leading-zero;padding-left:32px}.method li{padding:12px 0 12px 10px}.method li p{margin:4px 0;color:var(--muted)}
.library-link{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin:22px 0;font-size:14px;color:var(--muted)}.library-link a{color:var(--teal)}
footer{max-width:850px;margin:24px auto 0;border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;gap:14px;font-size:14px;color:var(--muted)}
dialog{border:1px solid var(--line);border-radius:22px;background:var(--paper);color:var(--ink);width:min(640px,94vw);padding:28px;max-height:88vh;overflow:auto}
dialog::backdrop{background:#081b3070}.dialog-heading{display:flex;justify-content:space-between;align-items:start;gap:15px}.dialog-heading .quiet{flex-shrink:0}
.dialog-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:25px}
.preference-grid{display:grid;gap:14px;margin:25px 0}.check{display:flex;align-items:center;gap:12px;font-size:16px}
.check input{accent-color:var(--teal);width:18px;height:18px;flex-shrink:0}input[type=range]{display:block;accent-color:var(--teal);width:100%;margin:12px 0}
summary{cursor:pointer;color:var(--teal);padding:12px 0}
.track-row{display:grid;grid-template-columns:1fr auto;gap:8px;padding:16px 0;border-bottom:1px solid var(--line);min-width:0}.track-row label{font-size:14px}.track-row input{display:block;max-width:100%;font-size:14px;margin-top:9px}
.track-row>span{font-size:14px;overflow-wrap:anywhere;min-width:0}.track-row button{font-size:14px}
.local-audio{max-width:620px;margin:12px auto;padding:14px 20px;border:1px solid var(--line);border-radius:16px}
.audio-heading{display:flex;justify-content:space-between;align-items:center;gap:12px}.audio-heading strong{font-size:14px;font-weight:500;overflow-wrap:anywhere;min-width:0}.audio-heading button{flex-shrink:0;font-size:14px}
audio{width:100%;margin:8px 0}.local-audio .small{margin:5px 0}.audio-status{text-align:center;margin:10px auto;max-width:650px;overflow-wrap:anywhere}.audio-status:empty{display:none}.resume-audio{display:block;margin:auto}
.episode-list{list-style:none;padding:0;margin:16px 0;max-height:45vh;overflow-y:auto}.episode-list li+li{border-top:1px solid var(--line)}
.episode-button{display:grid;grid-template-columns:55px 1fr;width:100%;gap:5px 12px;text-align:left;border:0;background:transparent;color:var(--ink);padding:14px 8px}
.episode-button span{font-size:14px;color:var(--teal)}.episode-button strong{font-weight:500;overflow-wrap:anywhere}.episode-button small{grid-column:2;font-size:14px}.episode-button[aria-pressed=true]{background:#d7e7df;border-radius:8px}
.learning{max-width:850px;margin:30px auto}.learning>h1{font-size:clamp(32px,4.5vw,46px)}.learning>.intro{margin:15px 0}
.learn-choices{display:flex;flex-wrap:wrap;gap:9px;margin:22px 0}
.learn-choice{border:1px solid #c6d5d2;border-radius:25px;background:transparent;color:var(--ink);padding:10px 15px;font-size:16px}
.learn-choice[aria-pressed=true]{background:var(--teal);color:white;border-color:var(--teal)}
.learn-choice{max-width:100%;overflow-wrap:anywhere;text-align:left}
.guide-detail{max-width:38rem;margin:12px auto;font-size:1rem;line-height:1.65}
.learn-guide button{max-width:100%;white-space:normal;min-width:0}
.learn-cue,.learn-article h2{overflow-wrap:anywhere}
.library-safety{border-bottom:1px solid var(--line);font-size:1rem}
.learn-article{padding:28px;border:1px solid var(--line);border-radius:20px;background:#ffffff70}
.learn-article h2{font-size:30px;margin:10px 0}.learn-theme{font-size:18px;color:var(--teal);margin-top:10px}
.learn-steps{padding-left:22px}.learn-steps li{padding:6px 0 6px 5px}
.learn-connection{border-left:3px solid #169c9f;padding:8px 0 8px 16px;margin:22px 0}.learn-connection p{margin:5px 0}
.learn-guide{background:var(--panel);border-radius:15px;padding:24px;text-align:center;margin:24px 0}.learn-guide label{display:block;font-size:14px}
.learn-guide select{margin:10px auto;max-width:100%}.learn-cue{font-size:30px;line-height:1.25;margin:20px 0 10px;min-height:40px}
.learn-count{font-size:22px;font-variant-numeric:tabular-nums;min-height:36px;margin:5px 0}.learn-source a{font-size:14px}.learn-source summary{padding:8px 0}
.library-tools{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}.practice-note{font-size:14px;color:var(--muted)}
.energy-card{border-top:3px solid #bb6a46}.energy-card .eyebrow{color:#985232}
.high-contrast{--paper:#fff;--ink:#031525;--muted:#173d4a;--line:#9aafac}
.large-text{font-size:19px}.large-text .intro,.large-text .learn-article{font-size:21px}.large-text .small,.large-text label,.large-text nav>*{font-size:17px}
.focus,.night{color-scheme:dark;--paper:#102433;--ink:#eef6f1;--muted:#d1e5e1;--teal:#81d1c8;--line:#37515b;--panel:#183644}
.focus .site-header,.focus #method,.focus .library-link,.focus footer{display:none}.focus .practice{min-height:80vh;padding-top:24px}
.focus .secondary,.night .secondary{color:#102433}.night .learn-article{background:#122b39}.night nav [aria-current=page]{background:#21414b}
.night .learn-choice[aria-pressed=true]{color:#102433}.night .episode-button[aria-pressed=true],.focus .episode-button[aria-pressed=true]{background:#21414b}
.night .brand img{mix-blend-mode:normal}.night .eyebrow,.focus .eyebrow{color:#91d5cf}
body.practising #method,body.practising .library-link{display:none}
.reduced-motion *{scroll-behavior:auto!important;animation:none!important;transition:none!important}
.reduced-motion .active-brain .brain-structure{filter:none}.reduced-motion .brain-colour{display:none}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}.active-brain .brain-structure{filter:none}.brain-colour{display:none}}
@media(max-width:720px){.site-header{padding:16px 20px;gap:12px;flex-wrap:wrap}.brand{font-size:16px}.brand img{width:45px;height:45px}.settings-link{margin-left:auto}nav{order:3;width:100%;margin:0;justify-content:center;gap:12px}main{padding:0 20px}.arrival{padding-top:24px}.session-settings{gap:9px}.settings label{min-width:0}.settings select{padding:9px 10px}.brain-button{width:210px;height:210px}.intro{font-size:17px}.learning{margin-top:24px}.learn-article{padding:22px 18px}.learn-article h2{font-size:27px}.learn-guide{padding:20px 12px}.learn-choice{padding:9px 12px;font-size:15px}.track-row{grid-template-columns:1fr}.track-row button{justify-self:start}dialog{padding:22px}footer{flex-wrap:wrap}.library-link{gap:6px}}
/* Essential v7: the book's quiet typography, generous reading space, clear controls. */
.skip-link{position:fixed;top:-100px;left:16px;padding:12px 20px;background:var(--ink);color:var(--paper);z-index:20}.skip-link:focus{top:16px}
.inline-button{font:inherit;border:0;border-bottom:1px solid currentColor;background:none;color:var(--teal);padding:0;cursor:pointer}
fieldset{border:1px solid var(--line);border-radius:14px;padding:18px;margin:12px 0;min-width:0}legend{padding:0 8px;color:var(--teal)}fieldset>label{display:block;margin:14px 0}fieldset select{width:100%}
button:disabled{cursor:default;opacity:.6}button,a,input,select{touch-action:manipulation}
.journey-strip{max-width:710px;margin:18px auto;padding:16px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;font-size:14px}.journey-strip a{color:var(--teal)}body.practising .journey-strip{display:none}
.finish-book{max-width:460px;margin:24px auto;border-top:1px solid var(--line);padding-top:22px}
.library-filters{display:flex;flex-wrap:wrap;gap:20px;margin-top:25px}.library-filters label{font-size:14px;color:var(--muted)}.library-filters select{min-width:180px}.article-topline{display:flex;align-items:center;justify-content:space-between;gap:12px}
.reading-main{max-width:1000px}.reading-intro{padding:42px 0 16px}.reading-intro .intro{margin-left:0}.editorial-section{padding:28px 0;border-top:1px solid var(--line);max-width:810px;margin:auto}.editorial-section>h2{margin:12px 0 20px}.editorial-section details{border-bottom:1px solid var(--line);padding:5px 0}
.course-step{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:24px 0;border-bottom:1px solid var(--line)}.step-number{font-size:24px;color:var(--teal);padding-top:5px}.course-step h3{font-size:22px;margin:7px 0}.course-step p{margin:10px 0}.course-step .check{margin-top:16px;color:var(--muted)}progress{width:100%;height:8px;accent-color:var(--teal)}
.habit-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 32px}.habit-grid h3{font-size:22px;margin-bottom:6px}.habit-grid p{color:var(--muted)}
.book-layout{display:grid;grid-template-columns:minmax(200px,.85fr) minmax(280px,1fr);gap:55px;align-items:center;padding:52px 0}.book-cover{width:100%;height:auto;max-width:330px;box-shadow:8px 15px 30px #081a301b;border-radius:2px}.book-wordmark{font-size:clamp(38px,5vw,58px);font-weight:500;letter-spacing:.16em;line-height:1.45}.book-wordmark span{color:#159c9f}.book-subtitle{font-size:19px;line-height:1.5}.book-values{color:var(--teal);letter-spacing:.13em;font-size:12px;margin-top:30px}.book-layout .secondary{display:inline-block;text-decoration:none;margin-top:15px}
.episode-row{display:flex;align-items:center}.episode-row .episode-button{flex:1;min-width:0}.save-mix{font-size:23px;min-width:44px}.focus .journey-strip{display:none}
@media(max-width:720px){nav{gap:2px;flex-wrap:wrap}nav a,nav button{padding:9px 10px}.site-header{gap:10px}.brand{letter-spacing:.14em}.journey-strip{flex-direction:column;gap:4px}.book-layout{grid-template-columns:1fr;gap:28px;padding:30px 0}.book-cover{max-width:240px;margin:auto}.book-layout>div{text-align:center}.book-wordmark{font-size:40px}.habit-grid{grid-template-columns:1fr}.reading-intro{padding-top:25px}.article-topline{align-items:flex-start;flex-wrap:wrap}.library-filters{gap:12px}.library-filters select{min-width:0}.course-step{grid-template-columns:32px 1fr;gap:8px}}
@media(max-width:380px){.brand{font-size:14px}.brand img{width:36px;height:36px}.settings-link{padding:8px 4px}nav a,nav button{padding:9px 8px}.settings{gap:6px}.settings select{max-width:105px}.library-filters{display:grid;grid-template-columns:1fr}.library-filters select{width:100%}}
/* Essential v8 · Quiet Flow */
html{scroll-padding-top:20px}
body{font-size:1rem}
button,select,summary{min-height:44px}
.site-header{flex-wrap:wrap}.site-header nav{flex-wrap:wrap}
.session-hint{max-width:390px;margin:8px auto 0}
.practice-tools{justify-content:center;gap:4px;margin-bottom:24px}
.practice-tools #end{margin-right:auto}
.practice-tools #focusToggle{border:1px solid var(--line);border-radius:24px}
#practiceStatus:empty{display:none}
#method[open]{scroll-margin-top:20px}
.brain-button:focus-visible{outline-offset:6px;outline-color:var(--teal)}
.focus .brand img{mix-blend-mode:normal}
.focus .motion-note{display:none}
.focus .practice{min-height:0}
.focus .practice-tools{margin-bottom:28px}
.focus #homeJourney{display:none}
.focus .brain-button{box-shadow:0 0 60px #81d1c814}
.podcast-dock{position:fixed;bottom:0;left:0;right:0;z-index:5;display:flex;align-items:center;justify-content:center;gap:16px;padding:12px max(20px,env(safe-area-inset-right)) max(12px,env(safe-area-inset-bottom));background:var(--paper);border-top:1px solid var(--line);box-shadow:0 -4px 24px #081a3008}
.podcast-dock>div{max-width:560px;min-width:0;flex:1}
.podcast-dock p{font-size:.875rem;line-height:1.4;margin:3px 0 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.podcast-dock .eyebrow{font-size:.75rem;letter-spacing:.12em}
.podcast-dock button{flex-shrink:0;border:1px solid var(--line);border-radius:24px;font-size:.875rem}
body.has-podcast{padding-bottom:calc(104px + env(safe-area-inset-bottom))}
.no-script{max-width:660px;margin:24px auto;padding:20px;border:1px solid var(--line)}
.large-text .quiet,.large-text .secondary,.large-text select,.large-text .learn-choice{font-size:1.125rem}
.large-text .learn-cue{font-size:2.25rem}
.large-text .small,.large-text .intro{line-height:1.7}
.track-row label{min-width:0}.track-row input{width:100%}
.track-row button:disabled{display:none}
.learn-guide .quiet,.learn-guide .secondary{margin:4px}
#learnElapsed{min-height:1.65em}
@media(max-width:720px){
 .site-header nav{justify-content:center}
 .practice-tools #end{margin-right:0}
 .practice-tools .quiet{font-size:.875rem;padding:8px}
 .session-hint{font-size:.875rem;max-width:300px}
 .podcast-dock{gap:7px;padding-left:14px;padding-right:14px}
 .podcast-dock button{padding:7px 10px}
 .podcast-dock .eyebrow{letter-spacing:.03em;font-size:.75rem}
 .large-text .brand{font-size:1rem}
}
@media(max-width:380px){
 main{padding-left:16px;padding-right:16px}
 .site-header{padding-left:16px;padding-right:16px}
 .session-settings{display:grid;grid-template-columns:1fr 1fr;width:100%}
 .session-settings label:first-child{grid-column:1/-1}
 .session-settings select{max-width:100%;width:100%;font-size:1rem}
 .podcast-dock{flex-wrap:wrap}
 .podcast-dock>div{flex-basis:100%;text-align:center}
 body.has-podcast{padding-bottom:calc(130px + env(safe-area-inset-bottom))}
 dialog{padding:18px}
 .book-wordmark{font-size:2.125rem;letter-spacing:.1em}
}
.install-main{max-width:560px;margin:0 auto;text-align:center;padding:clamp(42px,10vh,90px) 24px}
.install-main>img{display:block;margin:0 auto 18px;border-radius:26%;box-shadow:0 10px 32px #081a3020}
.install-main .intro{margin:14px auto 22px}
.install-steps{max-width:420px;margin:24px auto 32px;text-align:left;padding-left:28px}
.install-steps li{padding:7px 0}