@import url("https://fonts.googleapis.com/css2?family=DM+Mono:wght@300;400;500&family=DM+Sans:wght@300;400;500;600;700&display=swap");*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#ffffff;--fg:#000000;--border:#000000;--muted:#666666;--accent:#000000;--correct:#16a34a;--wrong:#dc2626;--highlight:#f5f5f5;--card-shadow:4px 4px 0px #000}html{scroll-behavior:smooth}body{font-family:DM Sans,sans-serif;background:var(--bg);color:var(--fg);overflow-x:hidden}.App,body{min-height:100vh}body{margin:0;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.home-screen{min-height:100vh;flex-direction:column;justify-content:center;padding:2rem;position:relative}.header-brand,.home-screen{display:flex;align-items:center}.header-brand{position:absolute;top:2rem;left:2rem;gap:12px;cursor:pointer;z-index:10}.brand-logo{width:40px;height:40px;object-fit:contain}.brand-name{font-family:DM 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Mono,monospace;font-size:11px;letter-spacing:2px;text-transform:uppercase;margin-bottom:2rem}h1{font-size:clamp(2.2rem,6vw,3.5rem);font-weight:700;line-height:1.05;letter-spacing:-1.5px}.premium-btn,h1{margin-bottom:1rem}.premium-btn{display:inline-block;border:2px solid var(--border);background:var(--fg);color:var(--bg);padding:16px 24px;cursor:pointer;font-family:DM Sans,sans-serif;font-size:1rem;font-weight:600;transition:all .12s ease}.premium-btn:hover{background:#fff;color:#000;transform:translate(-2px,-2px);box-shadow:var(--card-shadow)}.premium-active-badge{display:inline-block;font-family:DM Mono,monospace;font-size:.9rem;color:var(--correct);border:2px solid var(--correct);padding:10px 20px;margin-bottom:1rem;font-weight:500}.divider{border:none;border-top:2px solid #000;margin:2rem 0}.section-label{font-family:DM 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.12s}.full-btn:hover{background:#fff;color:#000}.stats-row{display:flex;gap:1rem;margin-top:2rem;font-family:DM Mono,monospace;font-size:12px;color:var(--muted);justify-content:center}@media(max-width:520px){.mode-grid{grid-template-columns:1fr 1fr}}.cert-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));grid-gap:20px;gap:20px;margin-top:2rem}.cert-box{border:2px solid #000;background:#fff;padding:24px;text-align:left;display:flex;flex-direction:column;transition:all .15s ease;position:relative;overflow:hidden}.cert-box:hover{transform:translate(-4px,-4px);box-shadow:4px 4px 0 #000}.cert-box.paid{border-color:var(--correct,#10b981)}.cert-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.cert-header h2{margin:0;font-size:1.5rem;letter-spacing:-.5px}.cert-q-count{font-family:DM Mono,monospace;font-size:.8rem;background:#f0f0f0;padding:4px 8px;border-radius:4px}.cert-name{font-size:.95rem;color:var(--muted);margin-bottom:24px;flex-grow:1}.cert-action-btn{width:100%;padding:12px;font-family:DM Sans,sans-serif;font-size:.9rem;font-weight:600;cursor:pointer;border:2px solid #000;transition:all .12s ease}.unlock-btn{background:#fff;color:#000}.unlock-btn:hover{background:#000;color:#fff}.continue-btn{background:var(--correct,#10b981);color:#fff;border-color:var(--correct,#10b981)}.continue-btn:hover{opacity:.9}.back-btn{background:none;border:none;font-family:DM Sans,sans-serif;font-size:.9rem;color:var(--muted);cursor:pointer;margin-bottom:2rem;text-align:left;width:100%}.back-btn:hover{color:#000;text-decoration:underline}@media(max-width:768px){.header-brand{left:auto;margin-bottom:1rem}.header-brand,.header-nav{position:relative;top:auto;justify-content:center;width:100%}.header-nav{right:auto;margin-bottom:2rem;flex-wrap:wrap;gap:1rem}.home-screen{justify-content:flex-start;padding-top:1.5rem}}.login-screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem;background:var(--bg)}.login-inner{max-width:640px;width:100%;text-align:center}.login-inner .badge{display:inline-block;border:2px solid var(--border);padding:4px 14px;font-family:DM Mono,monospace;font-size:11px;letter-spacing:2px;text-transform:uppercase;margin-bottom:2rem}.login-inner h1{font-size:clamp(2.2rem,6vw,3.5rem);font-weight:700;line-height:1.05;letter-spacing:-1.5px;margin-bottom:1rem}.login-inner .subtitle{color:var(--muted);font-size:1rem;margin-bottom:2rem;font-weight:400}.login-inner .divider{border:none;border-top:2px solid var(--border);margin:2rem 0}.login-desc{color:var(--muted);line-height:1.6;margin-bottom:2.5rem}.auth-btn,.login-desc{font-size:1rem;font-family:DM Sans,sans-serif}.auth-btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;width:100%;max-width:320px;border:2px solid var(--border);background:var(--bg);color:var(--fg);padding:16px;cursor:pointer;font-weight:600;letter-spacing:.5px;transition:all .12s ease;margin:0 auto}.auth-btn:hover{background:var(--fg);color:var(--bg);transform:translate(-2px,-2px);box-shadow:var(--card-shadow)}.quiz-container{min-height:100vh;padding:1.5rem;max-width:800px;margin:0 auto}.quiz-topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:2rem;padding-bottom:1rem;border-bottom:2px solid #000;flex-wrap:wrap}.quiz-topbar>*{flex-shrink:0}.quiz-back{border:2px solid 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.opt-key{color:var(--correct)}.option.wrong{background:#fef2f2;border-color:var(--wrong)}.option.wrong .opt-key{color:var(--wrong)}.multi-note{font-family:DM Mono,monospace;font-size:10px;letter-spacing:1px;color:var(--muted);margin-bottom:1rem;text-transform:uppercase}.submit-btn{margin-top:0;border:2px solid #000;background:#000;color:#fff;padding:0 24px;cursor:pointer;font-family:DM Sans,sans-serif;font-size:.95rem;font-weight:600;transition:all .12s;display:inline-flex;align-items:center;justify-content:center;flex:1 1;max-width:160px;height:46px;box-sizing:border-box}.submit-btn:hover{background:#333}.submit-btn.visible{display:block}.action-buttons{display:flex;gap:10px;align-items:stretch;justify-content:center;margin-top:12px;flex-wrap:wrap}.clear-btn,.submit-btn{height:46px;box-sizing:border-box}.clear-btn{border:2px solid #666;background:#fff;color:#666;padding:0 20px;cursor:pointer;font-family:DM Sans,sans-serif;font-size:.95rem;font-weight:600;transition:all .12s;display:inline-flex;align-items:center;justify-content:center;flex:1 1;max-width:160px}.clear-btn:hover{border-color:#333;color:#333;background:#f5f5f5}.ai-toggle-btn{margin-top:1.5rem;width:100%;border:2px solid #4f46e5;background:#fff;color:#4f46e5;padding:14px;cursor:pointer;font-family:DM Sans,sans-serif;font-size:.95rem;font-weight:600;transition:all .12s;display:block}.ai-toggle-btn:hover{background:#4f46e5;color:#fff}.ai-box{border:2px solid #000;margin-top:1.5rem;animation:fadeUp .3s ease both;display:none}.ai-box.visible{display:block}.ai-header{background:#000;color:#fff;padding:10px 18px;display:flex;align-items:center;gap:10px;font-family:DM Mono,monospace;font-size:11px;letter-spacing:2px;text-transform:uppercase}.ai-dot{width:8px;height:8px;border-radius:50%;background:#4ade80;animation:pulse 1.4s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}.ai-body{padding:1.5rem;font-size:.9rem;line-height:1.7;color:#222}.ai-body strong{font-weight:700}.ai-loading{display:flex;align-items:center;gap:10px;font-family:DM Mono,monospace;font-size:12px;color:var(--muted)}.spinner{width:16px;height:16px;border:2px solid #ddd;border-top-color:#000;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.next-btn{margin-top:.5rem;border:2px solid #000;background:#fff;color:#000;padding:12px 16px;cursor:pointer;font-family:DM Sans,sans-serif;font-size:.9rem;font-weight:600;transition:all .12s;height:44px;box-sizing:border-box}.next-btn:hover{background:#000;color:#fff}.next-btn.hidden{display:none}.nav-buttons{display:flex;gap:10px;margin-top:.5rem;flex-wrap:wrap;align-items:center}.nav-buttons button{flex:1 1;min-width:120px}.prev-btn{flex:1 1;border:2px solid #000;background:#fff;color:#000;padding:12px 16px;cursor:pointer;font-family:DM Sans,sans-serif;font-size:.9rem;font-weight:600;transition:all .12s;height:44px;box-sizing:border-box}.prev-btn:hover:not(:disabled){background:#000;color:#fff}.prev-btn.hidden{display:none}.prev-btn:disabled{opacity:.5;cursor:not-allowed}.loading{min-height:100vh;display:flex;align-items:center;justify-content:center;font-family:DM Mono,monospace;color:var(--muted)}@media(max-width:520px){.quiz-topbar{flex-wrap:wrap;gap:10px}.progress-wrap{max-width:100%;flex:0 0 100%;order:3;margin:0}}.results-screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem}.results-inner{max-width:540px;width:100%;text-align:center}.results-inner h2{font-size:3rem;font-weight:700;letter-spacing:-2px;margin-bottom:.5rem}.result-pct{font-family:DM Mono,monospace;font-size:5rem;font-weight:500;letter-spacing:-3px;line-height:1;margin-bottom:.5rem}.result-sub{color:var(--muted);font-size:1rem;margin-bottom:2rem}.result-grid{display:grid;grid-template-columns:1fr 1fr 1fr;grid-gap:1rem;gap:1rem;margin-bottom:2rem}.result-cell{border:2px solid #000;padding:1.2rem}.result-cell .big{font-family:DM Mono,monospace;font-size:2rem;font-weight:500;display:block}.result-cell .lbl{font-size:.75rem;color:var(--muted)}.result-cell.green{border-color:var(--correct)}.result-cell.red{border-color:var(--wrong)}.restart-btn{width:100%;border:2px solid #000;background:#000;color:#fff;padding:16px;cursor:pointer;font-family:DM Sans,sans-serif;font-size:.95rem;font-weight:600;transition:all .12s;margin-bottom:12px}.restart-btn:hover{background:#333}.home-btn{width:100%;border:2px solid #000;background:#fff;color:#000;padding:16px;cursor:pointer;font-family:DM Sans,sans-serif;font-size:.95rem;font-weight:600;transition:all .12s}.home-btn:hover{background:#000;color:#fff}@media(max-width:768px){.results-screen{justify-content:flex-start;padding-top:2rem;padding-bottom:2rem}}.study-guides-container{min-height:100vh;background-color:var(--bg);color:var(--fg);font-family:DM Sans,sans-serif;padding:2rem;display:flex;flex-direction:column;align-items:center}.header-brand-sg{width:100%;max-width:1000px;display:flex;align-items:center;gap:12px;cursor:pointer;margin-bottom:1rem}.brand-logo-sg{width:40px;height:40px;object-fit:contain}.brand-name-sg{font-family:DM Sans,sans-serif;font-weight:700;font-size:1.25rem;letter-spacing:-.5px;color:#000}.header-nav-sg{width:100%;max-width:1000px;margin-bottom:2rem}.back-btn-sg{background:none;border:none;font-family:DM Sans,sans-serif;font-size:.9rem;color:var(--muted);cursor:pointer;text-align:left;transition:all .12s;margin-bottom:1rem}.back-btn-sg:hover{color:var(--fg);text-decoration:underline}.content-inner{max-width:1000px;width:100%}.content-inner h1{font-size:clamp(2.2rem,6vw,3.5rem);font-weight:700;line-height:1.05;letter-spacing:-1.5px;margin-bottom:1rem}.subtitle{color:var(--muted);font-size:1rem;margin-bottom:2rem;font-weight:400}.controls-bar{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:2rem}.tabs{display:flex;gap:.5rem}.tab-btn{background:#fff;border:2px solid #000;color:#000;padding:8px 20px;font-family:DM Mono,monospace;font-size:14px;font-weight:600;cursor:pointer;transition:all .12s ease}.tab-btn:hover{background:#f0f0f0}.tab-btn.active{background:#000;color:#fff}.search-wrapper{flex-grow:1;max-width:400px}.search-bar{width:100%;padding:10px 15px;border:2px solid #000;font-family:DM Sans,sans-serif;font-size:1rem;background:#fff;outline:none}.search-bar:focus{background:#f9f9f9}.no-results{font-family:DM Mono,monospace;color:var(--muted);margin-bottom:2rem}.blogs-flex-col{display:flex;flex-wrap:wrap;flex-direction:row;gap:24px;margin-bottom:3rem}.blogs-flex-col>.guide-card{flex-grow:1;flex-shrink:1;flex-basis:calc(33.333% - 24px);min-width:300px}.guide-card{border:2px solid #000;background:#fff;padding:24px;text-align:left;display:flex;flex-direction:column;transition:all .15s ease;animation:fadeUp .25s ease both}.clickable-card{cursor:pointer;height:100%;justify-content:space-between}.clickable-card:hover{transform:translate(-4px,-4px);box-shadow:4px 4px 0 #000}@keyframes fadeUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.card-top h2{font-size:1.3rem;letter-spacing:-.5px;color:var(--fg)}.card-top h2,.meta{margin-bottom:.75rem}.meta{font-family:DM Mono,monospace;font-size:11px;letter-spacing:1px;color:var(--muted);text-transform:uppercase;display:inline-block}.blog-summary{font-size:.95rem;color:#444;line-height:1.5;margin-bottom:1.5rem}.read-more{font-family:DM Mono,monospace;font-size:12px;font-weight:700;color:var(--fg);text-transform:uppercase}.blog-detail-view{animation:fadeUp .25s ease both}.blog-detail-content{margin-top:1rem;cursor:default}.blog-detail-content:hover{transform:none;box-shadow:none}.guide-body{font-size:1.05rem;line-height:1.7}.guide-body h1{font-size:2.5rem;margin-bottom:1.5rem;margin-top:0;line-height:1.1;letter-spacing:-1px}.guide-body h2{font-size:1.75rem;margin-top:2.5rem;margin-bottom:1rem;border-bottom:2px solid #eee;padding-bottom:.5rem}.guide-body h3{font-size:1.25rem;margin-top:1.5rem;margin-bottom:.75rem}.guide-body strong{color:#000}.guide-body p{margin-bottom:1rem}.guide-body ol,.guide-body ul{margin-bottom:1.5rem;padding-left:1.5rem}.guide-body h1,.guide-body h2,.guide-body h3{color:var(--fg);margin-top:1.5rem;margin-bottom:1rem}.guide-body pre{padding:1rem;border:2px solid #000;overflow-x:auto;margin-bottom:1.5rem;font-size:.9rem}.guide-body code,.guide-body pre{background:#f4f4f4;font-family:DM Mono,monospace}.guide-body code{padding:2px 4px}.cta-section{border:2px solid #000;background:#f5f5f5;padding:2rem;text-align:center;margin-top:3rem;margin-bottom:2rem}.cta-section h3{font-size:1.5rem;margin-bottom:1.5rem;letter-spacing:-.5px}.cta-btn{border:2px solid #000;background:#000;color:#fff;padding:14px 24px;cursor:pointer;font-family:DM Sans,sans-serif;font-size:.95rem;font-weight:600;transition:all .12s;display:inline-block}.cta-btn:hover{background:#fff;color:#000;transform:translate(-2px,-2px);box-shadow:4px 4px 0 #000}.pagination{display:flex;justify-content:center;align-items:center;gap:1.5rem;margin-top:3rem;margin-bottom:2rem;width:100%}.page-btn{background:#fff;border:2px solid #000;color:#000;padding:10px 24px;font-family:DM Mono,monospace;font-size:14px;font-weight:700;cursor:pointer;transition:all .15s ease;text-transform:uppercase;letter-spacing:.5px}.page-btn:hover:not(:disabled){background:#000;color:#fff;transform:translate(-4px,-4px);box-shadow:4px 4px 0 #000}.page-btn:active:not(:disabled){transform:translate(-1px,-1px);box-shadow:1px 1px 0 #000}.page-btn:disabled{opacity:.4;cursor:not-allowed;background:#f5f5f5;border-color:#999;color:#999}.page-info{font-family:DM Mono,monospace;font-size:14px;font-weight:600;color:var(--fg);background:#f9f9f9;padding:8px 16px;border:1px dashed #000}.paywall-container{position:relative;overflow:hidden;padding-bottom:0!important}.guide-body.paywall-restricted{max-height:800px;overflow:hidden;position:relative;mask-image:linear-gradient(180deg,black 50%,transparent);-webkit-mask-image:linear-gradient(180deg,black 50%,transparent)}.paywall-overlay{position:absolute;bottom:0;left:0;width:100%;height:350px;display:flex;align-items:flex-end;justify-content:center;padding-bottom:3rem;z-index:10;background:linear-gradient(180deg,rgba(255,255,255,0) 0,rgba(255,255,255,.8) 40%,rgba(255,255,255,1) 80%)}.paywall-content{text-align:center;background:white;padding:2rem;border:2px solid #000;box-shadow:4px 4px 0 #000;max-width:500px;margin:0 1rem;animation:fadeUp .5s ease both;animation-delay:.2s}.paywall-content h3{font-size:1.5rem;margin-bottom:.5rem;letter-spacing:-.5px;margin-top:0}.paywall-content p{color:#666;margin-bottom:1.5rem;line-height:1.5}.guide-body.paywall-restricted{min-height:500px}@media(max-width:768px){.study-guides-container{padding:1.5rem 1rem}.header-nav-sg{margin-bottom:1.5rem}}