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#000}.step-icon{margin-bottom:16px;font-size:2.2rem}.step-title{font-family:var(--font-head);margin-bottom:10px;font-size:1.3rem;font-weight:800}.step-body{color:var(--text-2);font-size:.95rem;font-weight:500;line-height:1.6}.units-grid{grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px;display:grid}.unit-preview-card{border:var(--border-thick) solid #000;border-radius:var(--radius-lg);box-shadow:var(--neo-shadow);background:#fff;padding:24px 22px;transition:all .15s;position:relative;overflow:hidden}.unit-preview-card.locked{opacity:.85;background:#f3f4f6}.unit-preview-card:not(.locked):hover{box-shadow:var(--neo-shadow-lg);transform:translate(-3px,-3px)}.unit-preview-icon{margin-bottom:12px;font-size:2rem}.unit-preview-num{margin-bottom:6px}.unit-preview-title{font-family:var(--font-head);margin-bottom:8px;font-size:1.15rem;font-weight:800}.unit-preview-count{color:var(--text-muted);font-size:.85rem;font-weight:700}.unit-lock{background:#e5e7eb;border:2px solid 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0}.final-cta-title{margin-bottom:20px}.final-cta-sub{color:#000;max-width:520px;margin:0 auto 36px;font-size:1.2rem;font-weight:600}.final-cta-note{color:#000;margin-top:16px;font-size:.85rem;font-weight:700}.footer{border-top:var(--border-thick) solid #000;background:#fff;padding:40px 0}.footer-inner{justify-content:space-between;align-items:center;display:flex}.footer-links{font-family:var(--font-head);color:#000;gap:28px;font-size:.95rem;font-weight:700;display:flex}.footer-links a:hover{text-decoration:underline}.footer-copy{color:var(--text-muted);font-size:.85rem;font-weight:600}.duo-page{background-color:var(--bg);background-image:radial-gradient(var(--bg-dots) 1.5px, transparent 1.5px);color:#000;background-size:24px 24px;flex-direction:column;align-items:center;min-height:100vh;padding-bottom:120px;display:flex;position:relative}.duo-topbar{z-index:50;border-bottom:var(--border-thick) solid #000;background:#fff;width:100%;position:sticky;top:0;box-shadow:0 4px 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#000;border-radius:8px;justify-content:center;align-items:center;width:36px;height:36px;font-size:1.2rem;font-weight:900;transition:transform .1s;display:flex;position:absolute;top:16px;right:16px;box-shadow:2px 2px #000}.duo-modal-close:hover{background:var(--neo-pink);color:#fff;transform:translate(-1px,-1px)}.duo-modal-badge{background:var(--neo-yellow);border-radius:var(--radius-full);font-family:var(--font-head);color:#000;text-transform:uppercase;border:2px solid #000;margin-bottom:12px;padding:4px 14px;font-size:.8rem;font-weight:900;box-shadow:2px 2px #000}.duo-modal-title{font-family:var(--font-head);color:#000;margin-bottom:8px;font-size:1.5rem;font-weight:900;line-height:1.25}.duo-modal-sub{color:var(--text-2);margin-bottom:22px;font-size:.95rem;font-weight:600;line-height:1.5}.duo-modal-perks{grid-template-columns:1fr 1fr;gap:12px;width:100%;margin-bottom:24px;display:grid}.duo-perk{border-radius:var(--radius);text-align:left;background:#f8fafc;border:2.5px solid #000;align-items:center;gap:10px;padding:12px 14px;display:flex;box-shadow:3px 3px #000}.duo-perk-icon{font-size:1.5rem}.duo-perk strong{font-family:var(--font-head);color:#000;font-size:1rem;font-weight:800;display:block}.duo-perk p{color:var(--text-muted);font-size:.75rem;font-weight:600}.duo-start-big-btn{border-radius:var(--radius-lg);background:var(--neo-green);border:var(--border-thick) solid #000;color:#000;width:100%;font-family:var(--font-head);letter-spacing:.04em;box-shadow:var(--neo-shadow);text-transform:uppercase;padding:16px;font-size:1.15rem;font-weight:900;text-decoration:none;transition:transform .1s,box-shadow .1s;display:block}.duo-start-big-btn:hover{box-shadow:var(--neo-shadow-lg);color:#fff;background:#059669;transform:translate(-2px,-2px)}.duo-start-big-btn:active{transform:translate(2px,2px);box-shadow:2px 2px #000}.player-wrap{background-color:var(--bg);background-image:radial-gradient(var(--bg-dots) 1.5px, transparent 1.5px);background-size:24px 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solid #000;justify-content:center;align-items:center;margin-bottom:24px;display:flex}.lesson-card-title{font-family:var(--font-head);color:#000;margin-bottom:14px;font-size:1.6rem;font-weight:900;line-height:1.25}.lesson-card-body{color:#1f2937;flex:1;font-size:1.05rem;font-weight:500;line-height:1.7}.lesson-card-nav{border-top:3px solid #000;justify-content:space-between;align-items:center;margin-top:36px;padding-top:24px;display:flex}.card-dots{gap:8px;display:flex}.card-dot{background:#fff;border:2px solid #000;border-radius:4px;width:12px;height:12px;transition:all .2s}.card-dot.active{background:var(--neo-yellow);width:28px;box-shadow:2px 2px #000}.quiz-question{flex-direction:column;gap:24px;width:100%;max-width:620px;display:flex}.question-header{justify-content:space-between;align-items:center;display:flex}.question-prompt{font-family:var(--font-head);color:#000;font-size:1.3rem;font-weight:800;line-height:1.35}.options-list{flex-direction:column;gap:14px;display:flex}.option-btn{border:var(--border-thick) solid #000;border-radius:var(--radius);box-shadow:var(--neo-shadow-sm);text-align:left;color:#000;cursor:pointer;background:#fff;align-items:center;gap:14px;padding:16px 20px;font-size:1rem;font-weight:700;line-height:1.4;transition:transform .1s,box-shadow .1s,background .15s;display:flex}.option-btn:not(:disabled):not(.state-correct):not(.state-wrong):hover{box-shadow:var(--neo-shadow);background:#fef08a;transform:translate(-2px,-2px)}.option-btn:active:not(:disabled){transform:translate(2px,2px);box-shadow:1px 1px #000}.option-letter{width:34px;height:34px;font-family:var(--font-head);color:#000;background:#fff;border:2px solid #000;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;font-size:.9rem;font-weight:900;display:flex}.state-selected .option-letter,.state-correct .option-letter,.state-wrong .option-letter{color:#fff;background:#000}.option-icon{margin-left:auto;font-size:1.1rem}.tf-options{grid-template-columns:1fr 1fr;gap:16px;display:grid}.tf-btn{border:var(--border-thick) solid #000;border-radius:var(--radius-lg);box-shadow:var(--neo-shadow);font-family:var(--font-head);color:#000;cursor:pointer;text-align:center;background:#fff;padding:28px 16px;font-size:1.25rem;font-weight:900;transition:all .15s}.tf-btn:not(:disabled):not(.state-correct):not(.state-wrong):hover{background:var(--neo-yellow);box-shadow:var(--neo-shadow-lg);transform:translate(-2px,-2px)}.match-container{flex-direction:column;gap:16px;display:flex}.match-hint{color:#000;border-radius:var(--radius-sm);background:#fff;border:2px solid #000;padding:10px 14px;font-size:.9rem;font-weight:700;box-shadow:2px 2px #000}.match-cols{grid-template-columns:1fr 1fr;gap:16px;display:grid}.match-col{flex-direction:column;gap:12px;display:flex}.match-col-label{font-family:var(--font-head);text-transform:uppercase;letter-spacing:.08em;color:#000;padding-bottom:4px;font-size:.8rem;font-weight:900}.match-item{border-radius:var(--radius);text-align:left;color:#000;cursor:pointer;background:#fff;border:3px solid #000;width:100%;padding:14px 16px;font-size:.92rem;font-weight:700;line-height:1.4;transition:all .15s;box-shadow:3px 3px #000}.match-item:not(:disabled):not(.state-correct):not(.state-wrong):not(.match-used):hover{background:#fef08a;transform:translate(-2px,-2px);box-shadow:5px 5px #000}.match-item.match-active{background:var(--neo-cyan)!important;border-color:#000!important;box-shadow:5px 5px #000!important}.match-item.match-paired{background:#e9d5ff!important;border-color:#000!important}.match-item.match-used{opacity:.4;cursor:not-allowed}.feedback-panel{border-radius:var(--radius-lg);border:var(--border-thick) solid #000;box-shadow:var(--neo-shadow);padding:20px 22px}.feedback-panel.feedback-correct{background:#bbf7d0}.feedback-panel.feedback-wrong{background:#fecdd3}.feedback-header{align-items:center;gap:10px;margin-bottom:8px;display:flex}.feedback-title{font-family:var(--font-head);color:#000;font-size:1.2rem;font-weight:900}.feedback-explanation{color:#000;font-size:.95rem;font-weight:600;line-height:1.6}.question-actions{margin-top:6px}.result-screen{text-align:center;border:var(--border-thick) solid #000;border-radius:var(--radius-xl);width:100%;max-width:540px;box-shadow:var(--neo-shadow-lg);background:#fff;flex-direction:column;align-items:center;gap:28px;padding:48px 36px;display:flex}.result-emoji{font-size:4rem;line-height:1}.result-title{font-family:var(--font-head);color:#000;font-size:2.2rem;font-weight:900}.result-sub{color:var(--text-2);max-width:400px;font-size:1rem;font-weight:600;line-height:1.6}.xp-earned{background:var(--neo-yellow);border-radius:var(--radius-lg);box-shadow:var(--neo-shadow);border:3px solid #000;flex-direction:column;align-items:center;gap:4px;padding:20px 48px;display:flex}.xp-amount{font-family:var(--font-head);color:#000;font-size:2.4rem;font-weight:900}.xp-label{font-family:var(--font-head);color:#000;letter-spacing:.08em;text-transform:uppercase;font-size:.85rem;font-weight:900}.result-actions{flex-direction:column;gap:14px;width:100%;display:flex}.result-share{flex-direction:column;align-items:center;gap:10px;display:flex}.neo-card{border:var(--border-thick) solid #000;border-radius:var(--radius-xl);box-shadow:var(--neo-shadow);background:#fff;padding:24px}.neo-card-yellow{background:var(--neo-yellow);border:var(--border-thick) solid #000;border-radius:var(--radius-xl);box-shadow:var(--neo-shadow);padding:24px}.neo-card-cyan{background:var(--neo-cyan);border:var(--border-thick) solid #000;border-radius:var(--radius-xl);box-shadow:var(--neo-shadow);padding:24px}.neo-input{border-radius:var(--radius);color:#000;width:100%;font-family:var(--font-body);background:#fff;border:3px solid #000;outline:none;padding:12px 16px;font-size:1rem;font-weight:600;box-shadow:3px 3px #000}.neo-input:focus{background:#fffbeb;box-shadow:4px 4px #000}.mobile-nav-toggle{border-radius:var(--radius-sm);background:var(--neo-yellow);cursor:pointer;color:#000;border:2.5px solid #000;justify-content:center;align-items:center;width:44px;height:44px;font-size:1.3rem;font-weight:900;transition:transform .1s;display:none;box-shadow:2px 2px #000}.mobile-nav-toggle:active{box-shadow:none;transform:translate(2px,2px)}.mobile-nav-drawer{display:none}@media (max-width:900px){.hero-inner{text-align:center;grid-template-columns:1fr;gap:40px}.hero-left{flex-direction:column;align-items:center;display:flex}.hero-ctas,.hero-features{justify-content:center}.steps-grid{grid-template-columns:1fr;gap:20px}.units-grid{grid-template-columns:1fr;gap:16px}.testimonials-grid{grid-template-columns:1fr;gap:20px}.pricing-grid{grid-template-columns:1fr;gap:24px}.skills-card{grid-template-columns:1fr;gap:32px;padding:32px 24px}.stats-bar-inner{grid-template-columns:repeat(2,1fr);gap:20px}}@media (max-width:768px){.container,.container-sm,.container-xs{padding:0 16px}.navbar{padding:12px 16px}.navbar-links{display:none}.mobile-nav-toggle{display:flex}.mobile-nav-drawer{z-index:899;background:#fff;border-bottom:3px solid #000;flex-direction:column;gap:12px;padding:16px;display:flex;position:fixed;top:64px;left:0;right:0;box-shadow:0 6px #000}.mobile-nav-drawer a{font-family:var(--font-head);border-radius:var(--radius-sm);background:#fffbeb;border:2px solid #000;padding:10px 14px;font-size:1.05rem;font-weight:800;box-shadow:2px 2px #000}.hero{padding:90px 0 50px}.hero-funnel-wrap{width:280px;height:340px;padding:16px}.hero-stat-card-1{padding:8px 12px;top:-15px;right:-10px}.hero-stat-card-2{padding:8px 12px;bottom:50px;left:-15px}.hero-stat-card-3{padding:8px 12px;bottom:-10px;right:0}.support-container{grid-template-columns:1fr!important;gap:28px!important}.duo-topbar-inner{gap:8px;padding:10px 14px}.duo-topbar-nav{display:none!important}.duo-stats-row{gap:6px}.duo-stat-pill{gap:4px;padding:5px 8px;font-size:.82rem}.duo-stat-pill svg{width:16px;height:16px}.duo-mascot-card{text-align:center;flex-direction:column;gap:12px;padding:16px}.duo-mascot-avatar-wrapper{width:72px;height:72px}.duo-speech-bubble{text-align:center;width:100%}.duo-unit-banner{flex-direction:column;align-items:flex-start;gap:12px;padding:16px}.duo-unit-banner-right{justify-content:flex-end;width:100%}.duo-nodes-trail{gap:16px}.duo-modal-card{max-width:92vw;padding:24px 18px 20px}.duo-modal-perks{grid-template-columns:1fr}.player-header{gap:10px;padding:10px 14px}.player-content{padding:20px 14px 60px}.lesson-card{min-height:auto;padding:24px 18px}.lesson-card-title{font-size:1.35rem}.lesson-card-body{font-size:.95rem}.lesson-card-nav{margin-top:24px;padding-top:18px}.match-cols{grid-template-columns:1fr 1fr;gap:8px}.match-item{padding:10px 8px;font-size:.8rem}.tf-options{gap:10px}.tf-btn{padding:20px 10px;font-size:1.1rem}.question-prompt{font-size:1.15rem}.option-btn{gap:10px;padding:12px 14px;font-size:.9rem}.option-letter{width:28px;height:28px;font-size:.8rem}.result-screen{gap:20px;padding:32px 18px}.result-title{font-size:1.8rem}.xp-earned{padding:16px 32px}.xp-amount{font-size:2rem}.leaderboard-podium{grid-template-columns:1fr!important;gap:12px!important}.leaderboard-table-header,.leaderboard-table-row{grid-template-columns:45px 1fr 85px!important;padding:12px 10px!important;font-size:.88rem!important}.leaderboard-league-col{display:none!important}.profile-header-card{padding:20px 16px!important}.profile-avatar-row{text-align:center!important;flex-direction:column!important;align-items:center!important}.profile-actions-row{justify-content:center!important;width:100%!important}.footer-inner{text-align:center;flex-direction:column;gap:20px}.footer-links{flex-wrap:wrap;justify-content:center;gap:16px}}@media (max-width:480px){.h1{font-size:2.1rem}.h2{font-size:1.6rem}.btn-lg{width:100%;padding:14px 20px;font-size:1rem}.hero-ctas{flex-direction:column;width:100%}.hero-ctas .btn{width:100%}.duo-stat-pill span{font-size:.78rem}}