:root{--l04-surface:#fff;--l04-soft:#faf7ff;--l04-border:#e9e0f2;--l04-note:#9a86af;--l04-good:#367a5f;--l04-good-bg:#eff8f3;--l04-bad:#ab5b56;--l04-bad-bg:#fff1ef}html[data-theme="dark"]{--l04-surface:#1e1827;--l04-soft:#271e33;--l04-border:#493354;--l04-note:#b6a0ca;--l04-good:#a8d6bc;--l04-good-bg:#203d30;--l04-bad:#f0b1aa;--l04-bad-bg:#45282b}
#app[data-page="lesson"]:has(.l04-layout),#app[data-page="topic"]:has(.l04-topic-top){max-width:1600px;margin:auto}#app[data-page="lesson04-intro"],#app[data-page="practice04-setup"]{max-width:1400px;margin:auto}.l04-topic-top{display:flex;align-items:center;justify-content:space-between;gap:35px;padding:12px 0 30px}.l04-topic-top h1{font-size:clamp(31px,3.4vw,46px);line-height:1.18}.l04-topic-top .actions{margin-top:22px}.l04-topic-stats{padding:25px 30px;border:1px solid var(--l04-border);border-radius:22px;background:var(--l04-soft);min-width:260px}.l04-topic-stats>strong{display:block;font-size:45px;letter-spacing:-2px;color:var(--purple);font-weight:500}.l04-topic-stats small{font-size:21px;color:var(--l04-note);letter-spacing:0}.l04-topic-stats>span{font-size:13px}.l04-topic-stats p{font-size:11px;color:var(--l04-note);margin:13px 0 0}.l04-topic-label{display:flex;align-items:center;justify-content:space-between;margin:20px 0}.l04-topic-label h2{font-size:23px;margin:0}.l04-group-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.l04-group-card{border:1px solid var(--l04-border);border-radius:19px;padding:23px;background:var(--l04-surface);display:flex;flex-direction:column}.l04-group-card h3{font-size:19px;margin:22px 0 14px;line-height:1.4}.l04-group-card p{font-size:16px;line-height:1.9;margin:0 0 18px}.l04-group-card .link{margin-top:auto;align-self:flex-start;font-size:12px}.l04-view-status{font-size:10px;color:var(--l04-note)}.l04-baseline{font-size:11px;line-height:1.8;color:var(--l04-note);margin:27px 0 0;max-width:85ch}.l04-resume-strip{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:17px 22px;background:var(--l04-soft);border:1px solid var(--l04-border);border-radius:14px;font-size:13px}.l04-lesson-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:21px;gap:16px}.l04-lesson-top .secondary{padding:10px 15px;font-size:12px}.l04-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:30px;align-items:start}.l04-sidebar{display:flex;flex-direction:column;padding:16px 13px;border:1px solid var(--l04-border);border-radius:18px;background:var(--l04-soft);gap:4px}.l04-sidebar>.eyebrow{margin:4px 9px 15px}.l04-sidebar button{font-size:11px;line-height:1.6;text-align:left;padding:10px 8px;border-radius:9px;display:flex;gap:9px;color:var(--muted)}.l04-sidebar button>span{font-size:9px;min-width:17px;color:var(--l04-note);margin-top:2px}.l04-sidebar button:hover{background:var(--l04-surface)}.l04-sidebar button.active{background:var(--l04-surface);color:var(--purple);box-shadow:0 1px 6px #60408008}.l04-sidebar .l04-sidebar-practice{color:var(--purple);border-top:1px solid var(--l04-border);border-radius:0;margin-top:10px;padding-top:17px}.l04-workspace{min-width:0}.l04-step-track{display:flex;gap:5px;margin:0 0 15px}.l04-step-track span{flex:1;height:3px;border-radius:5px;background:var(--l04-border)}.l04-step-track span.done{background:var(--purple)}.l04-board{min-height:440px;padding:34px 28px;gap:0}.l04-board h1{font-size:clamp(24px,2.3vw,32px);letter-spacing:-.7px;margin:18px 0}.l04-board>p{font-size:15px;line-height:1.9;max-width:65ch}.l04-examples{display:flex;justify-content:center;gap:20px 28px;flex-wrap:wrap;font-size:clamp(27px,3vw,43px);font-weight:500;letter-spacing:-.7px;margin:23px 0 19px;width:100%;line-height:1.7}.l04-examples>span{white-space:nowrap}.l04-step-actions{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:10px;margin-top:25px}.l04-step-actions .primary,.l04-step-actions .secondary{padding:12px 16px;font-size:12px}.l04-viewed-note{font-size:11px!important;color:var(--l04-note)!important;max-width:55ch!important;margin-top:13px}.l04-tutor{padding:22px 0 0}.l04-tutor-caption{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--l04-note);margin:0 0 11px}.l04-tutor-note{padding:15px 19px;border:1px solid var(--l04-border);border-radius:15px;background:var(--l04-soft);font-size:13px;line-height:1.9;min-height:54px}.l04-help-actions{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0}.l04-help-actions button{padding:9px 12px;border:1px solid var(--l04-border);border-radius:10px;font-size:11px;color:var(--l04-note);background:var(--l04-surface)}.l04-help-actions button:hover{color:var(--purple);border-color:var(--purple)}.l04-tutor .composer{margin-top:10px}.l04-tutor-disclaimer{font-size:9px;color:var(--l04-note);margin:9px 0 0}.l04-mobile-picker{display:none}.l04-intro{max-width:1050px;margin:15px auto}.l04-intro>.eyebrow{display:block;margin-bottom:20px}.l04-intro .l04-board{min-height:530px}.l04-letterword{display:flex;align-items:center;justify-content:center;gap:3px;max-width:100%;flex-wrap:nowrap;font-size:clamp(23px,3.5vw,47px);font-weight:500;letter-spacing:-1px;margin:30px 0 22px;line-height:1.5}.l04-consonant{padding:5px 1px}.l04-vowel{font:inherit;min-width:44px;padding:4px 5px;line-height:inherit;background:var(--l04-surface);border:1px solid var(--l04-border);border-radius:10px;flex-shrink:0}.l04-vowel:hover:not(:disabled){border-color:var(--purple);background:var(--l04-soft)}.l04-vowel:disabled{opacity:1}.l04-vowel.right{background:var(--l04-good-bg);color:var(--l04-good);border-color:var(--l04-good)}.l04-vowel.incorrect{background:var(--l04-bad-bg);color:var(--l04-bad);border-color:var(--l04-bad)}.l04-check-feedback{font-size:14px!important;line-height:1.8;min-height:42px}.l04-question-tools{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}.l04-question-tools button{font-size:11px}.l04-faq{border:1px solid var(--l04-border);border-radius:14px;padding:18px;background:var(--l04-surface);max-height:330px;overflow:auto;scrollbar-width:thin}.l04-faq h3{font-size:13px;margin-bottom:12px}.l04-faq button{display:block;padding:10px 0;text-align:left;font-size:12px;line-height:1.5;color:var(--muted);width:100%;border-bottom:1px solid var(--l04-border)}.l04-faq button:hover{color:var(--purple)}.l04-faq summary{font-size:12px;color:var(--purple);cursor:pointer;padding:16px 0 5px}.l04-setup{max-width:900px;margin:35px auto}.l04-setup h1{font-size:35px}.l04-setup>p{max-width:70ch}.l04-setup label{display:block;font-size:12px;color:var(--l04-note);margin:30px 0}.l04-setup select,.l04-mobile-picker select{display:block;width:100%;padding:13px 14px;border:1px solid var(--l04-border);border-radius:11px;color:var(--ink);background:var(--l04-surface);margin-top:10px}.l04-setup h3{font-size:16px}.l04-length-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:15px 0}.l04-length-options button{text-align:left;padding:20px;border:1px solid var(--l04-border);border-radius:15px;background:var(--l04-surface)}.l04-length-options strong{font-weight:500;display:block;font-size:19px;margin-bottom:9px}.l04-length-options span{font-size:11px;color:var(--l04-note)}.l04-length-options button.active{border-color:var(--purple);background:var(--l04-soft);color:var(--purple)}.l04-practice-progress{height:4px;border-radius:9px;background:var(--l04-border);overflow:hidden;margin-bottom:28px}.l04-practice-progress>span{display:block;height:100%;background:var(--purple)}.l04-practice-board{min-height:440px}.l04-context{font-size:13px!important;margin:20px 0 0;color:var(--l04-note)!important}.l04-practice-feedback{font-size:16px;line-height:1.9;max-width:65ch}.l04-wait-note{font-size:12px!important;color:var(--l04-note)!important}.l04-practice-foot{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-top:20px}.l04-practice-foot>span{font-size:10px;color:var(--l04-note)}.l04-score-total{font-size:30px;color:var(--l04-note);letter-spacing:0}.l04-results-list{max-height:440px;overflow:auto;margin-top:25px;scrollbar-width:thin}.l04-results-list .row{padding:15px 5px}.l04-results-list strong{font-weight:500;font-size:20px}.l04-results-list .link{font-size:11px;white-space:nowrap}.l04-dictionary-search{width:100%;padding:12px;border:1px solid var(--l04-border);border-radius:10px;margin:8px 0 18px;background:var(--l04-surface);color:var(--ink)}.l04-dictionary-list{max-height:55svh;overflow:auto;scrollbar-width:thin}.l04-dictionary-list>div{display:flex;align-items:center;gap:12px;flex-wrap:wrap;border-bottom:1px solid var(--l04-border);padding:13px 0}.l04-dictionary-list strong{font-size:18px;font-weight:500}.l04-dictionary-list span{font-size:10px;color:var(--l04-note)}.l04-dictionary-list button{margin-left:auto;font-size:10px}
@media(max-width:1100px){.l04-layout{grid-template-columns:200px minmax(0,1fr);gap:20px}.l04-board{padding:28px 20px}.l04-group-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.l04-sidebar button{font-size:10px}.l04-topic-stats{min-width:225px}.l04-vowel{min-width:34px;padding:4px 3px}}
@media(max-width:760px){.l04-layout{display:block}.l04-sidebar{display:none}.l04-mobile-picker{display:block;font-size:10px;color:var(--l04-note);margin-bottom:19px}.l04-mobile-picker select{font-size:13px}.l04-topic-top{align-items:stretch;flex-direction:column;gap:20px}.l04-topic-top h1{font-size:31px}.l04-topic-stats{min-width:0;padding:17px 22px}.l04-topic-stats>strong{font-size:32px}.l04-topic-stats>span{font-size:11px}.l04-topic-stats p{margin-top:8px}.l04-group-grid{grid-template-columns:1fr}.l04-group-card{padding:22px}.l04-topic-label h2{font-size:20px}.l04-topic-label .link{font-size:10px}.l04-board{min-height:400px;padding:25px 13px}.l04-board h1{font-size:24px}.l04-board>p{font-size:13px}.l04-examples{font-size:27px;gap:14px 20px;margin:19px 0}.l04-letterword{font-size:clamp(17px,4.8vw,30px);gap:1px;letter-spacing:-.5px}.l04-vowel{min-width:26px;padding:6px 2px;border-radius:7px}.l04-consonant{padding:6px 0}.l04-step-actions{gap:8px}.l04-step-actions .primary,.l04-step-actions .secondary{font-size:11px;padding:11px 13px}.l04-tutor-note{padding:13px 15px;font-size:12px}.l04-help-actions button{font-size:10px;padding:9px}.l04-intro .l04-board{min-height:450px}.l04-lesson-top .secondary{font-size:10px;padding:10px}.l04-length-options{gap:8px}.l04-length-options button{padding:15px 12px}.l04-length-options strong{font-size:16px}.l04-length-options span{font-size:10px;line-height:1.6;display:block}.l04-setup{margin:24px auto}.l04-setup h1{font-size:28px}.l04-setup>p{font-size:13px}.l04-practice-foot{align-items:flex-start}.l04-practice-foot>span{max-width:150px;text-align:right;line-height:1.6}.l04-results-list strong{font-size:17px}.l04-resume-strip{font-size:11px;padding:15px}.l04-practice-feedback{font-size:14px}.l04-baseline{font-size:10px}}

/* Extra room for sessions containing three lesson links on the route. */
@media(min-width:651px){.route-stage{grid-auto-rows:250px}}