:root{color-scheme:light;--paper:#fcfaf2;--ink:#121e27;--muted:#5b6264;--orange:#f44a0a;--line:#d8d8cf;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;--sans:"Helvetica Neue",Helvetica,Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible{outline:3px solid var(--orange);outline-offset:6px}::selection{background:var(--orange);color:white}.wrap{width:min(1256px,calc(100% - 96px));margin-inline:auto}.skip-link{position:fixed;top:12px;left:12px;transform:translateY(-200%);z-index:20;background:var(--ink);color:white;padding:14px}.skip-link:focus{transform:none}.site-header{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:80px;border-bottom:1px solid var(--ink)}.wordmark{display:inline-flex;font-size:23px;font-weight:900;letter-spacing:-1.1px;line-height:1.1;white-space:nowrap}.wordmark>span:first-child{color:var(--orange)}.wordmark-dot{font-size:12px;margin:1px 0 0 4px;letter-spacing:0}.header-note{font-family:var(--mono);font-size:12px;letter-spacing:1.1px}.header-link{display:flex;align-items:center;gap:16px;font-size:14px;font-weight:600}.header-link:hover{color:var(--orange)}.library-icon{width:17px;height:14px;border:1.5px solid currentColor;border-top:4px double currentColor}.intro{display:flex;align-items:center;justify-content:space-between;gap:48px;padding-block:28px 30px}.intro-copy{flex:1}.eyebrow{font:12px/1.5 var(--mono);letter-spacing:1.4px;margin:0 0 17px;font-weight:500}.intro .eyebrow{display:flex;gap:12px;align-items:center}.orange-rule{width:25px;height:3px;background:var(--orange)}h1{font-size:clamp(44px,4.1vw,60px);font-weight:700;letter-spacing:-3px;line-height:.98;margin:0 0 23px}h1>span{color:var(--orange)}.intro-description{font-size:17px;line-height:1.6;margin:0;max-width:640px;color:#41494b}.practice-sequence{display:flex;gap:27px;margin:26px 0 0;font-size:13px}.practice-sequence span{display:flex;gap:9px;align-items:center}.practice-sequence b{font:12px var(--mono);color:var(--orange)}.brand-art{position:relative;flex:0 0 224px;text-align:center;padding:0 12px 19px;border-left:1px solid var(--line)}.brand-art img{display:block;width:100%;height:auto;mix-blend-mode:multiply}.art-caption{display:block;font:12px var(--mono);letter-spacing:2px;margin-top:0;color:var(--muted)}.library{border-top:1px solid var(--ink);padding-top:29px}.library-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;padding-bottom:27px}.library-heading .eyebrow{margin-bottom:8px;color:var(--muted)}h2{margin:0;font-size:26px;letter-spacing:-.8px;line-height:1.2;font-weight:600}.library-status{margin:0 0 3px;font-size:12px;color:var(--muted);font-family:var(--mono)}.group-heading{display:flex;align-items:center;gap:13px;margin-bottom:19px}.group-index{display:grid;place-items:center;width:28px;height:28px;background:var(--orange);color:white;font:12px var(--mono)}.group-heading h3{margin:0;font-size:17px;font-weight:600;letter-spacing:-.25px}.group-range{margin-left:auto;font:12px var(--mono);letter-spacing:.8px;color:var(--muted)}.video-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));column-gap:24px;row-gap:32px}.video-card{min-width:0}.video-frame{position:relative;aspect-ratio:16/9;background:var(--ink);overflow:hidden;isolation:isolate}.poster{position:relative;display:flex;flex-direction:column;align-items:stretch;justify-content:space-between;isolation:isolate;text-align:left;width:100%;height:100%;padding:21px 23px 18px;border:0;color:var(--paper);background:var(--ink)}button.poster{cursor:pointer;transition:background .18s}button.poster:hover{background:#20323e}.poster::before{content:"";position:absolute;width:51%;height:140%;top:-20%;right:9%;border-left:1px solid #ffffff0e;border-right:1px solid #ffffff0e;transform:rotate(32deg);z-index:-1}.poster::after{content:"";position:absolute;inset:0;border-top:3px solid var(--orange);pointer-events:none}.poster-label{font:12px/1.2 var(--mono);letter-spacing:1px;color:#bdc4c6}.poster-title{display:block;font-size:clamp(23px,2.35vw,34px);font-weight:600;line-height:1.04;letter-spacing:-1.1px;max-width:85%;white-space:pre-line;margin:11px 0 12px}.poster-number{position:absolute;right:12px;bottom:20px;font-size:104px;line-height:1;font-weight:700;letter-spacing:-9px;color:#ffffff07;z-index:-1}.poster-footer{display:flex;align-items:center;justify-content:space-between;gap:10px}.poster-brand{font-size:12px;letter-spacing:.6px;font-weight:800}.poster-brand span{color:#ff6a2b}.availability{font:12px var(--mono);letter-spacing:.6px;color:#d7dddd;border:1px solid #ffffff30;padding:5px 7px}.poster-ivory{background:#e9e7dd;color:var(--ink)}.poster-ivory .poster-label{color:#526067}.poster-ivory .poster-number{color:#121e2708}.poster-ivory .poster::before{border-color:#121e2710}.poster-ivory .availability{color:#435158;border-color:#121e2740}.poster-ivory .poster-brand span{color:var(--orange)}.video-meta{display:flex;align-items:center;gap:7px;margin:14px 0 6px;font:12px/1.4 var(--mono);letter-spacing:0;color:var(--muted);text-transform:uppercase}.video-meta .meta-separator{color:#a4a6a1}.video-title{font-size:17px;line-height:1.35;letter-spacing:-.25px;font-weight:600;margin:0 0 6px}.video-description{color:var(--muted);font-size:16px;line-height:1.5;margin:0;max-width:95%}.play-icon{display:grid;place-items:center;width:34px;height:26px;background:var(--orange);border-radius:5px}.play-icon svg{width:10px;height:12px;fill:white}.youtube-thumb{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-1}.poster-with-thumb{background:transparent;text-shadow:0 1px 6px #000}.poster-with-thumb::before{inset:0;width:100%;height:100%;background:linear-gradient(transparent,#000b);border:0;transform:none;z-index:0}.poster-with-thumb>*:not(img){z-index:1}.poster-with-thumb .poster-title{visibility:hidden}.video-frame iframe{display:block;width:100%;height:100%;border:0}.video-actions{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:10px;font-size:12px}.youtube-link{text-decoration:underline;text-underline-offset:3px}.close-player{border:0;border-bottom:1px solid var(--line);background:none;padding:5px 0;cursor:pointer}.site-footer{margin-top:46px;padding-block:26px 24px;border-top:2px solid var(--ink)}.footer-top{display:flex;align-items:center;gap:28px;padding-bottom:28px}.footer-top .wordmark{font-size:20px}.footer-signoff{font-size:14px;color:var(--muted)}.back-top{margin-left:auto;font-size:12px}.footer-bottom{border-top:1px solid var(--line);padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:18px;color:var(--muted);font-size:12px;line-height:1.5}.footer-bottom p{margin:0}.footer-bottom p>span{margin-inline:9px}.privacy-button{padding:5px 0;background:none;border:0;border-bottom:1px solid var(--muted);font-size:12px;color:inherit;cursor:pointer}.notice{padding:24px;border:1px solid var(--line);line-height:1.5}dialog{border:1px solid var(--line);background:var(--paper);color:var(--ink);padding:30px;max-width:540px;width:calc(100% - 40px)}dialog::backdrop{background:#121e2799;backdrop-filter:blur(3px)}dialog p{font-size:16px;line-height:1.6;color:#41494b}dialog a{text-decoration:underline}.dialog-heading{display:flex;justify-content:space-between;gap:24px;align-items:center}.close-button{background:none;border:1px solid var(--line);width:36px;height:36px;font-size:24px;cursor:pointer}dialog p:last-child{margin-bottom:0}
@media(min-width:1500px){.intro{padding-block:32px}.brand-art{flex-basis:224px}}
@media(max-width:1050px){.wrap{width:calc(100% - 56px)}.header-note{display:none}.intro{gap:22px}.brand-art{flex-basis:204px}h1{font-size:56px}.intro-description{font-size:16px}.video-grid{column-gap:18px}.poster{padding:16px}.poster-title{font-size:26px}.poster-brand{font-size:12px}.poster-label{font-size:12px}.availability{font-size:12px;padding:4px}.footer-bottom{flex-wrap:wrap}.footer-bottom p:nth-child(2){margin-left:auto}}
@media(max-width:760px){.wrap{width:calc(100% - 40px)}.site-header{min-height:77px}.wordmark{font-size:21px}.header-link{font-size:12px;gap:9px}.library-icon{display:none}.intro{padding-block:36px 33px;gap:16px}.intro .eyebrow{font-size:12px;letter-spacing:1px}.orange-rule{width:16px}.brand-art{flex-basis:155px;padding:0 0 14px;border:0;align-self:center}.art-caption{font-size:12px;letter-spacing:1px}h1{font-size:51px;letter-spacing:-2.9px}.intro-description{font-size:15px;max-width:430px}.desktop-break{display:none}.practice-sequence{gap:15px;font-size:12px}.practice-sequence span{gap:6px}.practice-sequence b{font-size:12px}.library-heading{padding-bottom:27px;align-items:start;flex-direction:column;gap:12px}h2{font-size:24px}.library-heading .eyebrow{font-size:12px}.library-status{font-size:12px}.video-grid{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:28px}.poster-title{font-size:28px}.poster-number{font-size:85px}.video-title{font-size:16px}.footer-top{flex-wrap:wrap;gap:14px}.footer-signoff{font-size:12px}.footer-bottom{justify-content:flex-start;column-gap:24px}.footer-bottom p:nth-child(2){order:3;width:100%;margin:0}.privacy-button{margin-left:auto}.group-range{font-size:12px}}
@media(max-width:520px){.wrap{width:calc(100% - 36px)}.site-header{min-height:70px;gap:16px}.wordmark{font-size:19px}.header-link{font-size:12px}.intro{position:relative;display:block;padding-block:31px}.intro-copy{position:relative;z-index:1}.intro .eyebrow{font-size:12px;letter-spacing:1px;margin-bottom:20px}h1{font-size:48px;letter-spacing:-3px;margin-bottom:19px;max-width:270px}.intro-description{max-width:100%;font-size:15px}.brand-art{position:absolute;right:-4px;top:60px;width:88px;padding:0;z-index:0}.art-caption{display:none}.practice-sequence{font-size:12px;gap:20px;margin-top:23px}.practice-sequence b{font-size:12px}.video-grid{grid-template-columns:1fr;gap:27px}.poster{padding:22px 24px 19px}.poster-title{font-size:36px;line-height:1.04;max-width:90%}.poster-label{font-size:12px}.poster-brand{font-size:12px}.availability{font-size:12px;padding:5px 7px}.poster-number{font-size:110px}.video-title{font-size:18px}.video-description{font-size:16px}.video-meta{font-size:12px;margin-top:13px}.library{padding-top:25px}.library-heading{gap:12px;padding-bottom:27px}h2{font-size:23px}.group-heading h3{font-size:16px}.group-range{font-size:12px}.group-heading{gap:10px}.group-index{width:26px;height:26px}.footer-top .wordmark{font-size:18px}.footer-signoff{display:none}.footer-bottom{font-size:12px}.back-top{font-size:12px}}
@media(max-width:360px){.brand-art{width:80px;top:67px}.intro .eyebrow{font-size:12px}.wordmark{font-size:17px}.header-link{font-size:12px}h1{font-size:46px}.practice-sequence{gap:11px}.group-range{display:none}.poster-title{font-size:31px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Keep secondary information readable at all breakpoints. */
.video-meta{flex-wrap:wrap}.poster-footer{flex-wrap:wrap}.poster-label{letter-spacing:.7px}.poster-brand{letter-spacing:0}.availability{letter-spacing:0}.header-link{font-size:14px}.group-range{font-size:12px}.intro-description{font-size:16px}.art-caption{letter-spacing:.5px}.brand-art img{mix-blend-mode:normal}.practice-sequence{font-size:14px}.practice-sequence b{font-size:12px}.intro .eyebrow{letter-spacing:1px}
@media(max-width:520px){.header-link{font-size:12px}.practice-sequence{gap:14px;font-size:12px}.intro .eyebrow{font-size:12px;letter-spacing:.5px}.group-range{display:none}.poster-title{font-size:33px}}
@media(min-width:521px) and (max-width:760px){.poster-title{font-size:25px}.poster{padding:16px}.poster-footer{gap:5px}.availability{padding:3px 5px}}

/* Keep the library continuous, with quiet dividers between lesson groups. */
.video-group + .video-group{margin-top:40px;padding-top:30px;border-top:1px solid var(--line)}
.header-nav{display:flex;align-items:center;gap:28px}
.channel-link{display:inline-flex;align-items:center;gap:9px;color:var(--ink);font-size:14px;font-weight:600;line-height:1.5}
.channel-link[hidden]{display:none}
.channel-link:hover{color:var(--orange)}
.channel-link svg{width:22px;height:17px;flex:none;color:var(--orange)}
.footer-channel{font-size:14px;text-decoration:underline;text-underline-offset:4px}
@media(max-width:1250px){.header-note{display:none}}
@media(max-width:760px){.header-nav{gap:18px}.video-group + .video-group{margin-top:32px;padding-top:26px}}
@media(max-width:520px){.library-nav{display:none}.channel-link{font-size:12px;gap:6px}.channel-link svg{width:18px;height:14px}.footer-channel{order:3;width:100%;font-size:14px}.site-footer{margin-top:34px}.site-header{gap:10px}}
@media(max-width:360px){.channel-link{max-width:130px;line-height:1.3}.channel-link svg{display:none}}

/* Lesson discovery and device-local practice progress. */
.library-feedback{margin:0 0 24px;padding-left:16px;border-left:3px solid var(--orange);max-width:920px;color:var(--muted);font-size:16px;line-height:1.6}.library-feedback strong{color:var(--ink);font-weight:600}
.library-scope{margin:-10px 0 22px;font-size:16px;line-height:1.6;color:var(--muted)}
.availability-controls{display:flex;align-items:center;gap:20px}.availability-controls label{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:9px}.availability-controls select{font:14px var(--sans);padding:10px 26px 10px 10px;background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:0}.availability-controls select:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
#lesson-index-list{max-height:440px;overflow:auto;overscroll-behavior:contain}.index-watch{display:inline-block;margin:0 0 12px 33px;font-size:13px;text-decoration:underline;text-underline-offset:3px}
.poster-title-long{font-size:clamp(21px,1.85vw,27px)!important;letter-spacing:-.5px;max-width:100%}
@media(max-width:1050px){.status-row{flex-wrap:wrap}.availability-controls{flex-wrap:wrap}.poster-label{font-size:12px;letter-spacing:.3px}}
@media(max-width:520px){.availability-controls{width:100%;justify-content:space-between;gap:12px}.poster-title-long{font-size:30px!important}.library-scope{margin-top:-10px}.poster-label{font-size:12px}}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.library-controls{border-block:1px solid var(--line);padding-block:22px;margin-bottom:18px}
.search-progress-row{display:flex;align-items:flex-end;gap:32px;justify-content:space-between}
.search-field{display:flex;flex-direction:column;gap:8px;flex:1;max-width:560px;font-size:14px;font-weight:600}
.search-field input{width:100%;padding:13px 16px;border:1px solid #979e9e;background:transparent;border-radius:0;font:16px var(--sans);color:var(--ink);appearance:none}
input:focus-visible,summary:focus-visible{outline:3px solid var(--orange);outline-offset:4px}
.search-field input::placeholder{color:var(--muted);opacity:1}
.practice-progress{max-width:310px;text-align:right}.practice-progress p{margin:0}
#practice-progress{font-size:18px;font-weight:600;letter-spacing:-.3px}#storage-note{font-size:13px;line-height:1.5;color:var(--muted);margin-top:5px}
.topic-filters,.practice-filters{border:0;margin:0;padding:0;min-width:0}.topic-filters{margin-top:22px}.topic-filters legend{font-size:14px;font-weight:600;margin-bottom:12px}.topic-filters legend span{font-size:12px;font-weight:400;color:var(--muted);margin-left:10px}
#topic-options{display:flex;flex-wrap:wrap;gap:10px}.topic-option{display:flex;align-items:center;gap:9px;min-height:42px;padding:9px 13px;border:1px solid var(--line);font-size:14px;cursor:pointer;transition:border-color .15s}.topic-option:has(input:checked){border-color:var(--ink);background:#eeeee6}.topic-option:hover{border-color:var(--ink)}
.topic-option input,.practice-check input{margin:0;width:17px;height:17px;accent-color:var(--orange);flex:none;cursor:pointer}
.status-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:22px}.practice-filters{display:flex;flex-wrap:wrap;gap:4px}.practice-filters label{position:relative;cursor:pointer}.practice-filters input{position:absolute;width:1px;height:1px;opacity:0}.practice-filters span{display:block;padding:10px 14px;font-size:14px;border-bottom:2px solid transparent;color:var(--muted)}.practice-filters input:checked+span{border-color:var(--orange);color:var(--ink);font-weight:600}.practice-filters input:focus-visible+span{outline:3px solid var(--orange);outline-offset:2px}
.text-button{padding:8px 0;border:0;border-bottom:1px solid var(--muted);background:transparent;color:var(--muted);font-size:13px;cursor:pointer;white-space:nowrap}.text-button:hover{color:var(--ink)}
.lesson-index{margin:0 0 20px;border-bottom:1px solid var(--line);padding-bottom:17px}.lesson-index summary{cursor:pointer;font-size:14px;font-weight:600;line-height:1.6}.lesson-index summary>span{font-size:12px;font-weight:400;color:var(--muted);margin-left:12px}#lesson-index-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:3px 24px;padding:15px 0 0;margin:0;list-style:none}#lesson-index-list a{display:flex;align-items:baseline;gap:10px;padding:9px 4px;font-size:14px;line-height:1.5}#lesson-index-list a:hover{text-decoration:underline;text-underline-offset:3px}.index-number{font:12px var(--mono);color:var(--orange);flex:none}.index-status{margin-left:auto;font:12px var(--mono);color:var(--muted)}.index-practiced .index-number{color:var(--ink)}
.result-summary{font:12px/1.6 var(--mono);color:var(--muted);margin:0 0 24px}.practice-check{display:flex;align-items:center;gap:9px;padding-top:12px;margin-top:13px;border-top:1px solid var(--line);font-size:14px;min-height:40px;cursor:pointer;width:fit-content;min-width:120px}.is-practiced .practice-check{font-weight:600;color:var(--ink)}.video-card{scroll-margin-top:24px}.video-title:focus-visible{outline:2px solid var(--orange);outline-offset:5px}.video-frame:has(iframe){min-height:200px}
.load-more-row{text-align:center;margin-top:34px}.load-more,.outline-button{padding:14px 24px;border:1px solid var(--ink);background:var(--ink);color:var(--paper);font-size:14px;font-weight:600;cursor:pointer;min-height:46px}.load-more:hover,.outline-button:hover{background:#283d48}.empty-results{padding:42px 24px;border:1px solid var(--line);text-align:center}.empty-results h3{font-size:21px;margin:0 0 12px}.empty-results p{font-size:16px;line-height:1.5;color:var(--muted);max-width:490px;margin:0 auto 22px}
.video-group[hidden]+.video-group{border-top:0;padding-top:0;margin-top:0}
@media(max-width:760px){.search-progress-row{align-items:stretch;flex-direction:column;gap:15px}.search-field{max-width:none}.practice-progress{text-align:left;max-width:none}#practice-progress{font-size:16px}.status-row{align-items:flex-start}.practice-filters span{padding:10px;font-size:13px}#lesson-index-list{grid-template-columns:1fr}.library-controls{padding-top:20px}.topic-option{font-size:13px}.topic-filters legend span{display:block;margin:4px 0 0}}
@media(max-width:520px){.status-row{flex-direction:column;gap:10px}.practice-filters{width:100%;gap:0}.practice-filters span{padding:10px 9px}.topic-option{padding:9px 11px}.index-status{font-size:12px}.lesson-index summary>span{margin-left:7px}.load-more{width:100%}}