:root{--dl-yellow:#F7ED00;--dl-red:#FF1A1F;--dl-text:#1e293b;--dl-text-light:#64748b;--dl-bg:#fdfdfd;--dl-border:#1e293b;--dl-surface:#ffffff;--dl-primary:#FF1A1F}.dl-page-wrapper{background:#e2e8f0;font-family:'Nunito',sans-serif;color:var(--dl-text);padding:40px 20px;min-height:100vh}.dl-page-wrapper *{box-sizing:border-box}.dl-container{max-width:1040px;margin:0 auto;background:var(--dl-surface);border-radius:24px;padding:40px;border:4px solid var(--dl-border);box-shadow:8px 8px 0 #1e293b}.dl-breadcrumb{display:inline-flex;align-items:center;font-size:1rem;font-weight:800;color:var(--dl-text-light);margin-bottom:24px}.dl-breadcrumb a{color:var(--dl-text);text-decoration:none;border-bottom:2px solid #fff0}.dl-breadcrumb a:hover{border-bottom-color:var(--dl-text)}.dl-sep{margin:0 12px;color:var(--dl-text-light)}.dl-topic-link{color:#fff;background:var(--dl-primary);padding:4px 12px;border-radius:8px;border:2px solid var(--dl-border);box-shadow:2px 2px 0 var(--dl-border)}.dl-header{margin-bottom:40px}.dl-title{font-size:3rem;font-weight:900;line-height:1.1;margin:0 0 16px 0;text-transform:uppercase;color:var(--dl-text)}.dl-excerpt{font-size:1.25rem;color:var(--dl-text-light);line-height:1.6;font-weight:600;margin:0}.dl-media-wrap{border-radius:16px;overflow:hidden;background:#000;border:4px solid var(--dl-border);box-shadow:6px 6px 0 var(--dl-border);margin-bottom:48px}.dl-video iframe{width:100%;aspect-ratio:16/9;display:block;border:none}.dl-audio{background:var(--dl-surface);padding:20px}.dl-audio audio{width:100%}.dl-content-area{font-size:1.2rem;line-height:1.8;color:var(--dl-text);font-weight:600}.dl-block{margin-bottom:32px}.dl-block-heading h2{font-family:'Nunito',sans-serif;font-size:2.2rem;font-weight:900;margin:48px 0 24px 0;display:inline-block;background:var(--dl-yellow);padding:4px 16px;border-radius:8px;border:3px solid var(--dl-border);box-shadow:4px 4px 0 var(--dl-border);transform:rotate(-1deg);color:var(--dl-text)}.dl-block-text p{margin:0 0 24px 0}.dl-example{background:#f8fafc;border:3px dashed var(--dl-text-light);padding:32px;border-radius:16px;margin:40px 0;position:relative;text-align:center}.dl-badge{position:absolute;top:-20px;left:50%;transform:translateX(-50%) rotate(2deg);background:var(--dl-primary);color:#fff;font-size:1rem;font-weight:900;text-transform:uppercase;padding:8px 24px;border-radius:12px;border:3px solid var(--dl-border);box-shadow:4px 4px 0 var(--dl-border);display:inline-block}.dl-example p{margin:0;font-weight:800;font-size:1.6rem;color:var(--dl-text)}.dl-note{background:#fffbeb;border:3px solid var(--dl-border);padding:24px;border-radius:16px;margin:32px 0;font-size:1.1rem;box-shadow:4px 4px 0 #f59e0b}.dl-note strong{background:#f59e0b;color:#fff;padding:2px 8px;border-radius:6px;margin-right:8px;font-weight:800;text-transform:uppercase}.dl-vocab-list ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:16px}.dl-vocab-list li{background:#fff;border:3px solid var(--dl-border);padding:20px 24px;border-radius:16px;box-shadow:4px 4px 0 var(--dl-border);display:flex;flex-wrap:wrap;align-items:center;gap:16px;transition:transform 0.1s;margin-bottom:0}.dl-vocab-list li:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--dl-border)}.dl-word{font-size:1.4rem;color:var(--dl-primary);font-weight:900;min-width:200px;display:inline-block}.dl-meaning{color:var(--dl-text);font-size:1.1rem;font-weight:700;flex:1}.dl-image img{max-width:100%;height:auto;border-radius:12px;border:3px solid var(--dl-border);box-shadow:4px 4px 0 var(--dl-border)}.dl-practice-section{background:var(--dl-yellow);border:4px solid var(--dl-border);padding:48px;border-radius:24px;margin:60px 0 40px 0;text-align:center;box-shadow:8px 8px 0 var(--dl-border)}.dl-practice-section h3{margin:0 0 24px 0;font-size:2.2rem;font-weight:900;text-transform:uppercase;color:var(--dl-text)}.dl-practice-content .dl-btn{font-size:1.5rem;padding:20px 40px;border-radius:20px}.dl-quiz-container{background:#fff;border:3px solid var(--dl-border);border-radius:16px;padding:32px;box-shadow:6px 6px 0 var(--dl-border);margin:40px 0}.dl-quiz-question{font-size:1.5rem;font-weight:900;margin:0 0 24px 0;color:var(--dl-text)}.dl-quiz-options{display:flex;flex-direction:column;gap:12px}.dl-quiz-opt-btn{background:#f8fafc;border:3px solid var(--dl-border);border-radius:12px;padding:16px 24px;font-size:1.2rem;font-weight:700;text-align:left;cursor:pointer;transition:all 0.1s;box-shadow:4px 4px 0 var(--dl-border);color:var(--dl-text);font-family:inherit}.dl-quiz-opt-btn:active:not(:disabled){transform:translate(4px,4px);box-shadow:0 0 0 var(--dl-border)}.dl-quiz-opt-btn:hover:not(:disabled){background:#e2e8f0}.dl-quiz-opt-btn.correct{background:#22c55e!important;color:#fff!important}.dl-quiz-opt-btn.incorrect{background:#ef4444!important;color:#fff!important;text-decoration:line-through}.dl-quiz-feedback{margin-top:16px;font-weight:900;font-size:1.2rem;padding:12px;border-radius:8px;text-align:center;border:3px dashed var(--dl-border)}.dl-quiz-feedback.success{background:#dcfce7;color:#166534;border-color:#22c55e}.dl-quiz-feedback.error{background:#fee2e2;color:#991b1b;border-color:#ef4444}.dl-fb-container{background:#fff;border:3px solid var(--dl-border);border-radius:16px;padding:32px;box-shadow:6px 6px 0 var(--dl-border);margin:40px 0}.dl-fb-sentence{font-size:1.5rem;font-weight:800;line-height:2;margin-bottom:24px;color:var(--dl-text)}.dl-fb-input{font-size:1.5rem;font-weight:900;font-family:inherit;padding:4px 16px;border:3px solid var(--dl-border);border-radius:8px;box-shadow:3px 3px 0 var(--dl-border);width:200px;text-align:center;color:var(--dl-primary);outline:none;transition:border-color 0.2s}.dl-fb-input:focus{border-color:var(--dl-primary)}.dl-fb-check-btn{font-size:1rem;padding:12px 24px;border-radius:12px}.dl-fb-feedback{margin-top:24px;font-weight:900;font-size:1.2rem;padding:12px;border-radius:8px;text-align:center;border:3px dashed var(--dl-border)}.dl-fb-feedback.success{background:#dcfce7;color:#166534;border-color:#22c55e}.dl-fb-feedback.error{background:#fee2e2;color:#991b1b;border-color:#ef4444}.dl-navigation{display:flex;justify-content:space-between;align-items:center;border-top:4px dashed var(--dl-border);padding-top:40px;margin-top:40px}.dl-btn{display:inline-block;padding:16px 32px;font-size:1.2rem;font-weight:900;border-radius:16px;text-decoration:none;text-align:center;border:3px solid var(--dl-border)!important;text-transform:uppercase;transition:all 0.1s}.dl-btn-primary{background:var(--dl-primary)!important;color:#fff!important;box-shadow:0 6px 0 var(--dl-border)!important}.dl-btn-primary:active{transform:translateY(6px);box-shadow:0 0 0 var(--dl-border)!important}.dl-btn-primary:hover{transform:none;box-shadow:0 6px 0 var(--dl-border)!important}.dl-btn-outline{background:#fff!important;color:var(--dl-text)!important;box-shadow:0 6px 0 var(--dl-border)!important}.dl-btn-outline:active{transform:translateY(6px);box-shadow:0 0 0 var(--dl-border)!important}.dl-btn-outline:hover{background:#fff;border-color:var(--dl-border)}.dl-useful-phrases-wrap{margin:32px 0}.dl-phrase-cards{display:flex;flex-direction:column;gap:20px}.dl-phrase-card{background:#fff;border:3px solid var(--dl-border);border-radius:16px;padding:24px 28px;box-shadow:5px 5px 0 var(--dl-border);transition:transform 0.15s ease,box-shadow 0.15s ease}.dl-phrase-card:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--dl-border)}.dl-phrase-header{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:8px}.dl-phrase-target{font-size:1.6rem;font-weight:900;color:var(--dl-primary);line-height:1.2}.dl-audio-speak-btn{background:#f1f5f9;border:2px solid var(--dl-border);border-radius:10px;padding:6px 14px;font-size:.95rem;font-weight:800;color:var(--dl-text);cursor:pointer;box-shadow:2px 2px 0 var(--dl-border);transition:all 0.1s ease;display:inline-flex;align-items:center;gap:6px;font-family:inherit}.dl-audio-speak-btn:hover{background:var(--dl-yellow);transform:translate(-1px,-1px);box-shadow:3px 3px 0 var(--dl-border)}.dl-audio-speak-btn:active{transform:translate(2px,2px);box-shadow:0 0 0 var(--dl-border)}.dl-phrase-meaning{font-size:1.15rem;font-weight:700;color:#475569;margin-bottom:14px}.dl-phrase-example{background:#f8fafc;border-left:4px solid var(--dl-primary);padding:12px 18px;border-radius:0 10px 10px 0}.dl-example-label{display:block;font-size:.85rem;font-weight:900;text-transform:uppercase;letter-spacing:.05em;color:var(--dl-primary);margin-bottom:4px}.dl-example-text{margin:0;font-size:1.25rem;font-weight:700;color:var(--dl-text);font-style:italic}.dl-repeat-card{background:#eff6ff;border:3px solid #3b82f6;border-radius:16px;padding:28px;margin:36px 0;box-shadow:5px 5px 0 #1d4ed8}.dl-repeat-badge{display:inline-block;background:#3b82f6;color:#fff;font-size:1rem;font-weight:900;text-transform:uppercase;padding:6px 16px;border-radius:10px;margin-bottom:14px;letter-spacing:.03em}.dl-repeat-text{font-size:1.25rem;font-weight:800;color:#1e3a8a;line-height:1.6;margin:0 0 16px 0}.dl-repeat-tip{background:#fff;border:2px dashed #93c5fd;border-radius:10px;padding:12px 16px;font-size:1.05rem;font-weight:600;color:#1e40af}.dl-check-tag{display:inline-block;background:var(--dl-yellow);border:2px solid var(--dl-border);color:var(--dl-text);font-size:.85rem;font-weight:900;text-transform:uppercase;padding:4px 12px;border-radius:8px;box-shadow:2px 2px 0 var(--dl-border);margin-bottom:16px}.dl-speak-section{background:#fdf4ff;border:3px solid #c084fc;border-radius:20px;padding:32px;margin:40px 0;box-shadow:6px 6px 0 #7e22ce}.dl-speak-intro{margin-bottom:24px}.dl-step-tag{display:inline-block;background:#a855f7;color:#fff;font-size:.85rem;font-weight:900;text-transform:uppercase;padding:4px 12px;border-radius:8px;margin-bottom:8px}.dl-speak-intro h3{margin:6px 0 8px 0;font-size:1.8rem;font-weight:900;color:#581c87}.dl-speak-intro p{margin:0;font-size:1.15rem;font-weight:600;color:#7e22ce}.dl-speak-cards{display:flex;flex-direction:column;gap:16px}.dl-speak-card{background:#fff;border:3px solid var(--dl-border);border-radius:16px;padding:18px 22px;display:flex;align-items:flex-start;gap:18px;box-shadow:4px 4px 0 var(--dl-border)}.dl-speak-num{background:var(--dl-yellow);border:2px solid var(--dl-border);color:var(--dl-text);font-size:1.3rem;font-weight:900;width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:2px 2px 0 var(--dl-border);margin-top:2px}.dl-speak-content{flex:1;display:flex;flex-direction:column;gap:10px}.dl-speak-q-row{display:flex;justify-content:space-between;align-items:center;gap:12px}.dl-speak-q-text{margin:0;font-size:1.25rem;font-weight:800;color:var(--dl-text);line-height:1.4}.dl-speak-sample-wrap{margin-top:2px}.dl-speak-sample-toggle{background:#f8fafc;border:2px solid #cbd5e1;border-radius:8px;padding:5px 12px;font-family:inherit;font-size:.85rem;font-weight:700;color:#475569;cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:all 0.15s ease}.dl-speak-sample-toggle:hover{background:#f1f5f9;border-color:#94a3b8;color:#0f172a}.dl-speak-sample-toggle.active{background:#fefce8;border-color:#ca8a04;color:#854d0e}.dl-speak-sample-box{margin-top:10px;background:#fffbeb;border:2px dashed #f59e0b;border-radius:12px;padding:14px 18px}.dl-speak-sample-badge{font-size:.8rem;font-weight:800;text-transform:uppercase;color:#b45309;letter-spacing:.5px;margin-bottom:6px}.dl-speak-sample-text{margin:0 0 10px 0;font-size:1.05rem;font-weight:600;color:#1e293b;line-height:1.6;font-style:italic}.dl-sample-listen-btn{background:#fef08a!important;border-color:#ca8a04!important;color:#854d0e!important}.dl-audio-speak-sm{padding:4px 10px;font-size:.85rem;flex-shrink:0}.dl-challenge-card{background:linear-gradient(135deg,#fffbeb 0%,#fef3c7 100%);border:4px solid var(--dl-border);border-radius:24px;padding:36px;margin:48px 0;box-shadow:8px 8px 0 var(--dl-border);text-align:center;position:relative}.dl-challenge-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;flex-wrap:wrap;gap:10px}.dl-challenge-badge{background:var(--dl-red);color:#fff;font-size:1.1rem;font-weight:900;text-transform:uppercase;padding:8px 20px;border-radius:12px;border:2px solid var(--dl-border);box-shadow:3px 3px 0 var(--dl-border);letter-spacing:.04em}.dl-challenge-time{background:#fff;color:var(--dl-text);font-size:1rem;font-weight:800;padding:6px 14px;border-radius:10px;border:2px solid var(--dl-border)}.dl-challenge-task{font-size:1.5rem;font-weight:800;color:var(--dl-text);line-height:1.6;margin:0 0 24px 0}.dl-challenge-targets{background:#fff;border:3px solid var(--dl-border);border-radius:16px;padding:16px 20px;max-width:620px;margin:0 auto 28px auto;box-shadow:4px 4px 0 var(--dl-border)}.dl-target-label{display:block;font-size:1rem;font-weight:900;text-transform:uppercase;letter-spacing:.03em;color:var(--dl-text-light);margin-bottom:10px}.dl-target-chips{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.dl-target-chip{background:#f8fafc;border:2px solid var(--dl-border);border-radius:20px;padding:4px 14px;font-size:.95rem;font-weight:800;color:var(--dl-text);box-shadow:2px 2px 0 var(--dl-border);transition:all 0.25s ease}.dl-target-chip.matched{background:#22c55e;color:#fff;border-color:#15803d;box-shadow:3px 3px 0 #15803d;transform:translateY(-2px)}.dl-timer-widget{background:#fff;border:3px solid var(--dl-border);border-radius:18px;padding:24px;max-width:420px;margin:0 auto;box-shadow:5px 5px 0 var(--dl-border)}.dl-timer-display{font-size:4rem;font-weight:900;color:var(--dl-primary);font-family:monospace;line-height:1;margin-bottom:16px;text-shadow:2px 2px 0 var(--dl-border)}.dl-timer-controls{display:flex;justify-content:center;flex-wrap:wrap;gap:10px}.dl-timer-btn{background:var(--dl-yellow);border:3px solid var(--dl-border);padding:12px 20px;font-size:1rem;font-weight:900;border-radius:12px;cursor:pointer;box-shadow:3px 3px 0 var(--dl-border);transition:all 0.1s ease;font-family:inherit;text-transform:uppercase}.dl-timer-btn:hover{background:#facc15;transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--dl-border)}.dl-timer-btn:active{transform:translate(2px,2px);box-shadow:0 0 0 var(--dl-border)}.dl-timer-finish{background:#f97316;color:#fff}.dl-timer-finish:hover{background:#ea580c}.dl-timer-reset{background:#f1f5f9}.dl-timer-message{margin-top:14px;font-size:1.1rem;font-weight:800;padding:8px 12px;border-radius:8px}.dl-timer-message.running{color:#15803d}.dl-timer-message.finished{background:#dcfce7;color:#166534;border:2px solid #22c55e}.dl-challenge-transcript-wrap{max-width:620px;margin:28px auto 0 auto;text-align:left}.dl-transcript-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.dl-transcript-title{font-size:1.2rem;font-weight:900;color:var(--dl-text)}.dl-mic-indicator{display:none;align-items:center;gap:8px;font-size:.95rem;font-weight:800;color:#ef4444}.dl-mic-indicator.active{display:inline-flex}.dl-mic-dot{width:10px;height:10px;background:#ef4444;border-radius:50%;animation:dlPulse 1.2s infinite ease-in-out}@keyframes dlPulse{0%{transform:scale(.9);opacity:.6}50%{transform:scale(1.3);opacity:1}100%{transform:scale(.9);opacity:.6}}.dl-audio-visualizer-wrap{background:#fff;border:2px solid var(--dl-border);border-radius:12px;padding:10px 16px;display:flex;align-items:center;gap:12px;margin-bottom:14px;box-shadow:3px 3px 0 var(--dl-border)}.dl-viz-label{font-size:.95rem;font-weight:800;color:var(--dl-text)}.dl-viz-bars{display:flex;align-items:center;gap:5px;height:26px}.dl-viz-bar{width:6px;height:6px;background:#22c55e;border-radius:3px;transition:height 0.06s ease}.dl-recorded-playback-wrap{background:#f8fafc;border:2px solid var(--dl-border);border-radius:14px;padding:14px;margin-bottom:16px;box-shadow:3px 3px 0 var(--dl-border)}.dl-playback-label{font-size:1rem;font-weight:800;color:var(--dl-text);display:block;margin-bottom:6px}.dl-transcript-box{margin-bottom:18px}.dl-transcript-display{width:100%;min-height:90px;border:3px solid var(--dl-border);border-radius:16px;padding:18px 22px;font-size:1.25rem;font-weight:700;line-height:1.6;color:var(--dl-text);background:#fff;box-shadow:4px 4px 0 var(--dl-border);user-select:text;cursor:default;display:flex;align-items:center;position:relative;word-break:break-word}.dl-transcript-display.is-placeholder{color:#94a3b8;font-weight:600;font-style:italic;background:#f8fafc}.dl-transcript-display.is-speaking{border-color:#3b82f6;background:#f0f9ff;color:#1e293b}.dl-transcript-display.has-spoken{border-color:var(--dl-border);background:#fff;color:#0f172a;font-size:1.3rem}.dl-transcript-quote{color:#f59e0b;font-size:1.6rem;font-weight:900;line-height:1;margin:0 4px}.dl-transcript-loading{display:inline-flex;align-items:center;gap:8px;color:#b45309;font-weight:800;font-style:italic}.dl-final-text{color:#0f172a;font-weight:800}.dl-interim-text{color:#3b82f6;font-style:italic;opacity:.85;border-bottom:2px dashed #93c5fd}.dl-transcript-actions{text-align:center}.dl-btn-feedback{background:linear-gradient(135deg,#10b981 0%,#059669 100%);color:#fff;border:3px solid var(--dl-border);padding:14px 28px;font-size:1.15rem;font-weight:900;border-radius:14px;cursor:pointer;box-shadow:4px 4px 0 var(--dl-border);transition:all 0.15s ease;font-family:inherit;text-transform:uppercase;letter-spacing:.02em}.dl-btn-feedback:hover{background:#047857;transform:translate(-1px,-1px);box-shadow:5px 5px 0 var(--dl-border)}.dl-btn-feedback:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--dl-border)}.dl-btn-feedback:disabled{opacity:.7;cursor:not-allowed}.dl-feedback-card{background:#fff;border:4px solid var(--dl-border);border-radius:20px;padding:28px;margin:32px auto 0 auto;max-width:620px;text-align:left;box-shadow:6px 6px 0 var(--dl-border);animation:dlSlideDown 0.3s ease}@keyframes dlSlideDown{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.dl-feedback-header{display:flex;justify-content:space-between;align-items:center;border-bottom:2px solid #e2e8f0;padding-bottom:12px;margin-bottom:18px}.dl-feedback-title{font-size:1.4rem;font-weight:900;color:var(--dl-text);margin:0}.dl-feedback-pill{background:#f1f5f9;color:var(--dl-text);border:2px solid var(--dl-border);font-size:.9rem;font-weight:800;padding:4px 12px;border-radius:12px}.dl-feedback-praise{background:#f0fdf4;border-left:5px solid #22c55e;color:#166534;padding:14px 18px;border-radius:8px;font-size:1.15rem;font-weight:800;margin-bottom:22px;line-height:1.5}.dl-praise-icon{font-size:1.3rem;margin-right:4px}.dl-feedback-box{margin-bottom:22px}.dl-feedback-box h5{font-size:1.15rem;font-weight:900;color:var(--dl-text);margin:0 0 10px 0}.dl-matched-tags{display:flex;flex-wrap:wrap;gap:8px}.dl-matched-tag{background:#dcfce7;color:#166534;border:2px solid #22c55e;padding:6px 14px;border-radius:10px;font-size:.95rem}.dl-matched-empty{font-size:1rem;color:var(--dl-text-light);font-style:italic}.dl-improvements-list{list-style:none;padding:0;margin:0}.dl-improvements-list li{position:relative;padding-left:20px;margin-bottom:10px;font-size:1.05rem;font-weight:600;color:var(--dl-text);line-height:1.5}.dl-improvements-list li::before{content:"•";position:absolute;left:4px;top:0;font-weight:900}.dl-upgrade-box{background:#eff6ff;border:2px solid #3b82f6;border-radius:14px;padding:18px;position:relative}.dl-upgrade-text{font-size:1.2rem;font-weight:700;color:#1e3a8a;font-style:italic;line-height:1.6;margin:0 0 14px 0}.dl-upgrade-listen-btn{background:#3b82f6;color:#fff;border:2px solid var(--dl-border);padding:8px 16px;border-radius:10px;font-weight:800;cursor:pointer;box-shadow:2px 2px 0 var(--dl-border)}.dl-sample-wrap{margin-top:28px}.dl-sample-toggle-btn{background:#fff;border:2px dashed var(--dl-border);padding:10px 20px;border-radius:14px;font-size:1.05rem;font-weight:800;cursor:pointer;color:var(--dl-text);transition:all 0.2s ease;font-family:inherit}.dl-sample-toggle-btn:hover{background:#f8fafc;border-style:solid;transform:translateY(-1px)}.dl-sample-toggle-btn.active{background:#f1f5f9;border-style:solid}.dl-sample-content{background:#fff;border:3px solid var(--dl-border);border-radius:16px;padding:22px;margin:16px auto 0 auto;max-width:620px;text-align:left;box-shadow:4px 4px 0 var(--dl-border);animation:dlSlideDown 0.25s ease}.dl-sample-text{font-size:1.2rem;font-weight:700;color:var(--dl-text);line-height:1.6;margin:0 0 14px 0}.dl-sample-speak-btn{background:var(--dl-yellow);border:2px solid var(--dl-border);padding:8px 16px;border-radius:10px;font-weight:800;cursor:pointer;box-shadow:2px 2px 0 var(--dl-border)}@media (max-width:768px){.dl-container{padding:24px;border-width:3px}.dl-title{font-size:2.2rem}.dl-vocab-list li{flex-direction:column;align-items:flex-start}.dl-navigation{flex-direction:column;gap:20px}.dl-btn{width:100%}.dl-practice-content .dl-btn{font-size:1.2rem;padding:15px 30px}.dl-phrase-header{flex-direction:column;align-items:flex-start;gap:8px}.dl-speak-card{flex-direction:column;align-items:flex-start}.dl-speak-content{width:100%;flex-direction:column;align-items:flex-start;gap:8px}.dl-challenge-card{padding:24px 16px}.dl-challenge-task{font-size:1.25rem}.dl-chat-bubble{max-width:100%}}.dl-coach-card{background:#fdfbf7;border:3px solid var(--dl-border);border-radius:20px;padding:24px 28px;margin:28px 0;box-shadow:4px 4px 0 var(--dl-border);position:relative}.dl-coach-badge{display:inline-flex;align-items:center;gap:8px;background:var(--dl-yellow);border:2px solid var(--dl-border);padding:4px 12px;border-radius:12px;font-weight:800;font-size:.95rem;box-shadow:2px 2px 0 var(--dl-border);margin-bottom:14px}.dl-coach-title{font-size:1.5rem;font-weight:800;margin:0 0 10px 0;color:var(--dl-text)}.dl-coach-body{font-size:1.15rem;line-height:1.7;color:var(--dl-text)}.dl-coach-body p{margin:0 0 12px 0}.dl-coach-body p:last-child{margin-bottom:0}.dl-coach-body strong{color:#0f172a;font-weight:800}.dl-coach-card.dl-note-card{background:#f8fafc;border-left:8px solid #2563eb}.dl-coach-card.dl-note-card .dl-coach-badge{background:#e0f2fe;color:#0369a1}.dl-dialogue-card{background:#f0fdf4;border:3.5px solid var(--dl-border);border-radius:22px;padding:28px;margin:32px 0;box-shadow:6px 6px 0 var(--dl-border)}.dl-step-badge{display:inline-block;background:#16a34a;color:#fff;font-weight:800;font-size:.85rem;text-transform:uppercase;letter-spacing:.5px;padding:4px 12px;border-radius:8px;border:2px solid var(--dl-border);box-shadow:2px 2px 0 var(--dl-border);margin-bottom:10px}.dl-dialogue-title{font-size:1.8rem;font-weight:900;margin:0 0 8px 0;color:var(--dl-text)}.dl-dialogue-context{font-size:1.05rem;color:#475569;margin:0 0 24px 0}.dl-chat-container{display:flex;flex-direction:column;gap:16px}.dl-chat-row{display:flex;gap:12px;align-items:flex-start}.dl-chat-avatar{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:1.2rem;flex-shrink:0;border:2.5px solid var(--dl-border);box-shadow:2px 2px 0 var(--dl-border)}.is-dan .dl-chat-avatar{background:#FF1A1F;color:#fff}.is-partner .dl-chat-avatar{background:#3b82f6;color:#fff}.dl-chat-bubble{background:#fff;border:2.5px solid var(--dl-border);border-radius:16px;padding:14px 18px;box-shadow:3px 3px 0 var(--dl-border);max-width:88%}.is-dan .dl-chat-bubble{border-top-left-radius:4px}.is-partner .dl-chat-bubble{border-top-left-radius:4px}.dl-chat-speaker{font-size:.85rem;font-weight:800;text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}.is-dan .dl-chat-speaker{color:#FF1A1F}.is-partner .dl-chat-speaker{color:#2563eb}.dl-chat-text{font-size:1.2rem;font-weight:700;line-height:1.5;margin:0 0 6px 0;color:var(--dl-text)}.dl-chat-sub{font-size:.95rem;color:#64748b;line-height:1.4;margin:0 0 8px 0;font-style:italic}