@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Lora:wght@400;500;600&display=swap');
:root{--purple:#74536f;--deep:#51394e;--ink:#29252c;--muted:#746a74;--surface:#fff;--canvas:#f8f6f8;--line:#e8e1e7;--soft:#efe7ee;--green:#39715e;--radius:16px;font-family:'DM Sans',sans-serif;color:var(--ink);background:var(--canvas);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,a{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.4}a{color:inherit;text-decoration:none}svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}button{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #ab7ba2;outline-offset:4px}button{border:none;background:none}h1,h2,h3,p{margin:0}img{max-width:100%;display:block}[hidden]{display:none!important}.sprite{position:absolute;width:0;height:0}.skip{position:fixed;left:12px;top:-60px;background:var(--deep);color:white;padding:12px 20px;z-index:20}.skip:focus{top:12px}.app-shell{display:grid;grid-template-columns:238px minmax(0,1fr);min-height:100vh}.sidebar{border-right:1px solid var(--line);background:#fff;position:sticky;top:0;height:100vh;padding:32px 22px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:12px;margin-bottom:49px}.brand-mark{display:flex;align-items:center;justify-content:center;width:43px;height:43px;background:var(--purple);color:white;border-radius:13px}.brand-mark svg{width:24px;height:24px}.brand strong{font-family:'Lora',Georgia,serif;font-size:23px;font-weight:500;line-height:1.15}.brand small{display:block;font-size:13px;margin-top:4px;color:var(--muted)}.sidebar-label{font-size:12px;letter-spacing:1.5px;font-weight:600;color:#8d7e8b;margin-bottom:14px}.nav-button{width:100%;display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:11px;font-size:15px;text-align:left;margin-bottom:5px;min-height:48px}.nav-button.active{background:var(--soft);color:var(--deep);font-weight:600}.nav-button:hover{background:#f5f0f4}.pill{font-size:12px;font-weight:700;letter-spacing:.2px;padding:3px 7px;background:white;border-radius:6px;margin-left:auto}.sidebar-progress{margin-top:32px;border-top:1px solid var(--line);padding-top:25px}.progress-heading{display:flex;align-items:center;justify-content:space-between;font-size:14px}.progress-heading strong{font-weight:500}.progress-heading span{color:var(--purple);font-weight:700}.progress-track{height:5px;background:var(--soft);border-radius:6px;overflow:hidden;margin:13px 0 10px}.progress-track span{background:var(--purple);height:100%;display:block;width:0;transition:width .2s}.sidebar-progress p{font-size:12px;color:var(--muted)}.cover-tile{position:relative;margin-top:30px;overflow:hidden;border-radius:13px;border:1px solid var(--line);background:#fff}.cover-tile img{width:100%;aspect-ratio:1.3;object-fit:cover;object-position:center 58%}.cover-tile>div{padding:15px 14px}.cover-tile small{font-size:10px;letter-spacing:1.1px;color:var(--muted)}.cover-tile strong{display:block;font-size:14px;font-weight:600;margin:7px 0 11px}.cover-tile span{display:flex;align-items:center;justify-content:space-between;color:var(--purple);font-size:13px}.cover-tile svg{width:17px;height:17px}.sidebar-bottom{margin-top:auto;padding-top:30px}.tiny-stitch{display:block;width:28px;border-top:2px solid #b594ac;margin-bottom:14px}.sidebar-bottom p{font-family:'Lora',Georgia,serif;font-size:14px;line-height:1.7;color:#8b7486}main{min-width:0;padding:35px 34px 22px;max-width:1650px;width:100%;margin:auto}.page-header{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:28px}.eyebrow{font-size:11px;letter-spacing:1.8px;font-weight:700;color:var(--purple)}h1{font-family:'Lora',Georgia,serif;font-weight:500;font-size:32px;letter-spacing:-.7px;line-height:1.3;margin:8px 0}.page-header p{font-size:14px;color:var(--muted);line-height:1.6}.outline-button{display:inline-flex;align-items:center;justify-content:center;gap:9px;background:white;border:1px solid var(--line);border-radius:10px;padding:12px 17px;font-size:14px;white-space:nowrap}.outline-button:hover{border-color:var(--purple)}.learning-layout{display:grid;grid-template-columns:minmax(0,1fr) 335px;gap:27px;align-items:start}.lesson-workspace{min-width:0}.video-shell{aspect-ratio:16/9;position:relative;border-radius:var(--radius);overflow:hidden;background:#18131a;box-shadow:0 8px 25px #33203012}.video-shell iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.lesson-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin:22px 0 11px}.lesson-badge{display:inline-flex;background:var(--soft);color:var(--purple);padding:5px 9px;border-radius:5px;font-weight:700;font-size:11px;letter-spacing:1px}.meta-divider{color:#b5a6b0}#lesson-title{font-size:23px;line-height:1.4;font-weight:600;letter-spacing:-.5px}.author{font-size:13px;color:var(--muted);margin-top:11px;display:inline-flex;align-items:center;gap:7px;line-height:1.5}.author svg{width:13px;height:13px}.author:hover{color:var(--purple)}.lesson-actions{margin-top:23px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}.primary-button{display:inline-flex;align-items:center;justify-content:center;gap:9px;background:var(--purple);color:#fff;border-radius:10px;min-height:46px;padding:13px 17px;font-size:14px;font-weight:600;line-height:1.3}.primary-button:hover{background:var(--deep)}.primary-button.completed{background:#e4eee9;color:var(--green)}.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--purple);font-size:13px;font-weight:500;padding:5px 0}.text-link svg{width:15px;height:15px}.text-link:hover{text-decoration:underline}.lesson-nav{display:flex;justify-content:space-between;align-items:center;margin:27px 0 23px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:13px 0}.lesson-nav button{display:flex;align-items:center;gap:6px;font-size:13px;min-height:35px;color:var(--purple)}.lesson-nav>span{color:#9c8d98;font-size:12px}.lesson-nav svg{width:16px;height:16px}.reverse{transform:rotate(180deg)}.support-card{display:flex;gap:13px;align-items:center;border:1px solid var(--line);background:#fff;border-radius:12px;padding:19px}.support-icon{width:40px;height:40px;background:var(--soft);color:var(--purple);border-radius:9px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.support-card h3{font-size:14px;font-weight:600;margin-bottom:4px}.support-card p{font-size:13px;color:var(--muted);line-height:1.5}.support-card a{margin-left:auto;white-space:nowrap;font-size:13px;font-weight:600;color:var(--purple)}.device-note{font-size:12px;line-height:1.7;color:#8c7c88;margin-top:15px}.lesson-library{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 14px 10px;min-width:0}.library-header{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:0 4px 18px}.library-header h2{font-size:16px;font-weight:600;letter-spacing:-.3px}.library-header>span{font-size:12px;color:var(--muted);white-space:nowrap}.search-field{display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:9px;padding:0 11px;background:#fcfafc;margin:0 4px}.search-field svg{width:18px;height:18px;color:#978692}.search-field input{width:100%;min-width:0;border:0;background:transparent;outline:none;font-size:14px;padding:12px 0;color:var(--ink)}.search-field:focus-within{border-color:var(--purple);box-shadow:0 0 0 2px var(--soft)}.search-field input:focus-visible{outline:none}.filters{display:flex;gap:4px;margin:13px 4px 15px;border-bottom:1px solid var(--line);padding-bottom:12px}.filters button{font-size:12px;padding:7px 10px;border-radius:7px;min-height:33px;color:var(--muted)}.filters .selected{background:var(--soft);color:var(--deep);font-weight:600}.lesson-list{max-height:555px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#d3c5d0 transparent;padding:0 1px 4px}.lesson-card{display:flex;width:100%;text-align:left;gap:10px;align-items:center;padding:11px 7px;border:1px solid transparent;border-radius:10px;margin-bottom:5px;position:relative}.lesson-card:hover{background:#f9f5f8}.lesson-card.current{background:#f2eaf0;border-color:#e4d5e0}.thumbnail{width:94px;min-width:94px;aspect-ratio:16/10;position:relative;border-radius:7px;overflow:hidden;background:var(--soft)}.thumbnail img{width:100%;height:100%;object-fit:cover}.thumbnail .playing-icon{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:var(--purple);color:white;display:grid;place-items:center;border-radius:50%;width:26px;height:26px}.playing-icon svg{width:14px;height:14px;stroke:none;fill:currentColor}.thumb-complete{position:absolute;right:4px;top:4px;background:var(--green);color:white;border-radius:50%;width:19px;height:19px;display:grid;place-items:center}.thumb-complete svg{width:13px;height:13px}.card-text{min-width:0;flex:1}.card-text small{display:block;color:var(--purple);font-size:10px;font-weight:700;letter-spacing:.6px;margin-bottom:4px}.card-text strong{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:12.5px;font-weight:500;line-height:1.5}.card-text .duration{font-size:11px;display:block;color:var(--muted);margin-top:5px}.empty{text-align:center;padding:45px 12px}.empty>svg{width:27px;height:27px;color:#9c8796;margin-bottom:14px}.empty h3{font-size:15px;margin-bottom:8px}.empty p{font-size:13px;line-height:1.6;color:var(--muted);margin-bottom:15px}.app-footer{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:11px;line-height:1.7;color:#9a8e98;padding-top:29px;margin-top:22px;border-top:1px solid var(--line)}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,15px);padding:13px 21px;border-radius:11px;background:var(--deep);color:#fff;font-size:14px;opacity:0;pointer-events:none;z-index:10;max-width:calc(100% - 30px);transition:opacity .15s,transform .15s;text-align:center}.toast.visible{opacity:1;transform:translate(-50%,0)}.material-card{display:grid;grid-template-columns:minmax(240px,370px) 1fr;gap:49px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:20px;padding:36px;max-width:1080px;margin:12px auto 30px}.material-cover{padding:15px;background:#f4efef;border-radius:14px}.material-cover img{width:100%;border-radius:5px;box-shadow:0 8px 28px #4d354e20}.material-content h2{font-family:'Lora',Georgia,serif;font-size:34px;line-height:1.35;font-weight:500;letter-spacing:-.6px;margin:14px 0 18px}.material-content>p{font-size:16px;line-height:1.7;color:var(--muted)}.material-stats{display:flex;gap:30px;margin:25px 0}.material-stats span{font-size:13px;color:var(--muted)}.material-stats strong{display:block;font-size:21px;color:var(--purple);font-weight:600;margin-bottom:5px}.material-content>.text-link{display:flex;width:max-content;margin-top:12px}.material-content .material-edition{font-size:12px;line-height:1.7;margin-top:20px;padding-left:11px;border-left:2px solid #b694ad}.material-help{margin-top:26px;padding-top:23px;border-top:1px solid var(--line)}.material-help h3{font-size:15px;margin-bottom:8px}.material-help p{font-size:14px;color:var(--muted);line-height:1.7}.material-help button{margin-top:10px}
@media(min-width:1550px){.learning-layout{grid-template-columns:minmax(0,1fr) 380px;gap:34px}.lesson-list{max-height:650px}.thumbnail{width:105px;min-width:105px}.card-text strong{font-size:14px}}
@media(max-width:1180px){.app-shell{grid-template-columns:205px minmax(0,1fr)}.sidebar{padding:28px 17px}main{padding:28px 25px}.learning-layout{grid-template-columns:minmax(0,1fr) 295px;gap:19px}.thumbnail{width:78px;min-width:78px}.brand strong{font-size:21px}.brand-mark{width:38px;height:38px}.support-card{align-items:flex-start;flex-wrap:wrap}.support-card a{margin-left:53px}.lesson-actions{gap:10px}.primary-button{font-size:13px;padding:12px 14px}.material-card{gap:26px;padding:24px}.material-content h2{font-size:29px}}
@media(max-width:980px){.app-shell{display:block}.sidebar{position:sticky;z-index:5;top:0;display:flex;flex-direction:row;align-items:center;gap:15px;width:100%;height:auto;padding:15px 24px;border-right:0;border-bottom:1px solid var(--line);background:#fffffff5;backdrop-filter:blur(10px)}.brand{margin:0;margin-right:auto}.sidebar-label,.sidebar-progress,.cover-tile,.sidebar-bottom{display:none}.sidebar nav{display:flex;gap:5px}.nav-button{width:auto;margin:0;white-space:nowrap;padding:10px 13px;min-height:43px;font-size:14px}.nav-button svg{width:18px}.pill{display:none}main{padding:26px 24px;max-width:1150px}.learning-layout{grid-template-columns:minmax(0,1fr) 305px}.page-header{margin-bottom:24px}.top-pdf{display:none}h1{font-size:30px}.lesson-library{padding:17px 10px}.support-card a{margin-left:0}.support-card>div{flex:1}.material-card{grid-template-columns:minmax(210px,320px) 1fr}}
@media(max-width:720px){.sidebar{padding:12px 16px;gap:8px}.brand{gap:8px}.brand-mark{height:35px;width:35px;border-radius:10px}.brand strong{font-size:18px}.brand small{font-size:10px;margin-top:2px}.nav-button{padding:9px 10px;font-size:12px;gap:6px}.nav-button svg{width:16px;height:16px}main{padding:22px 16px 18px}.eyebrow{font-size:10px;letter-spacing:1.2px}h1{font-size:28px;margin:7px 0}.page-header p{font-size:14px}.page-header{margin-bottom:21px}.learning-layout{display:flex;flex-direction:column;gap:27px}.lesson-workspace,.lesson-library{width:100%}.video-shell{border-radius:12px}.lesson-meta{margin-top:18px}#lesson-title{font-size:21px}.author{font-size:12px}.lesson-actions{margin-top:19px;gap:14px}.primary-button{font-size:14px}.lesson-nav{margin-top:22px}.support-card{padding:16px;gap:10px}.support-card>div{min-width:180px}.support-card a{margin-left:50px}.device-note{font-size:12px}.lesson-library{padding:20px 12px 12px}.library-header h2{font-size:18px}.filters button{font-size:14px;padding:8px 12px;min-height:40px}.lesson-list{max-height:none;overflow:visible}.lesson-card{padding:13px 7px}.thumbnail{width:110px;min-width:110px}.card-text small{font-size:11px}.card-text strong{font-size:14px;-webkit-line-clamp:2}.card-text .duration{font-size:12px}.app-footer{font-size:11px;margin-top:15px;padding-top:21px}.material-card{display:flex;flex-direction:column;padding:24px;gap:25px;border-radius:15px}.material-cover{width:100%;max-width:290px}.material-content{width:100%}.material-content h2{font-size:30px}.material-stats{gap:28px}.material-content>.primary-button{width:100%}.material-content>.text-link{margin-left:auto;margin-right:auto}.toast{bottom:16px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.card-text strong{font-size:14px}.filters button{font-size:14px}.nav-button{font-size:14px}

/* Choose a lesson before opening its video. */
.learning-layout{display:flex;flex-direction:column;gap:28px}.learning-layout>.lesson-library,.learning-layout>.lesson-workspace{width:100%}.lesson-library{padding:24px 20px 16px}.lesson-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;max-height:460px;overflow-y:auto}.lesson-card{margin:0;min-width:0;padding:12px 8px}.lesson-workspace{max-width:1000px;margin:0 auto;scroll-margin-top:24px}.lesson-workspace:focus{outline:none}.back-library{margin:0 0 16px;min-height:40px}.lesson-library .search-field{max-width:520px}.lesson-library .filters{max-width:520px}.lesson-library .card-text strong{font-size:14px}
@media(max-width:1180px){.lesson-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:980px){.lesson-workspace{scroll-margin-top:100px}}
@media(max-width:720px){.lesson-library{padding:20px 12px 12px}.lesson-list{grid-template-columns:1fr;gap:5px;max-height:65vh;overflow-y:auto}.lesson-card{padding:13px 7px}.lesson-workspace{scroll-margin-top:130px}.learning-layout{gap:24px}.back-library{font-size:14px}.thumbnail{width:110px;min-width:110px}}

.language-notice{display:flex;align-items:center;gap:14px;padding:15px 18px;background:#f3ece0;border:1px solid #e8ddc9;border-radius:12px;margin-bottom:22px;color:#64513a;line-height:1.7;font-size:13px}.language-notice strong{white-space:nowrap}.language-notice span{font-size:12px}@media(max-width:720px){.language-notice{display:block}.language-notice strong{display:block;margin-bottom:4px}.lesson-meta{flex-wrap:wrap}.nav-button{font-size:13px!important}}