:root{color-scheme:dark;--bg: #0a1118;--surface: #101b26;--card: #142230;--card-alt: #1b2c3d;--primary: #38bdf8;--primary-hover: #0284c7;--primary-glow: rgba(56, 189, 248, .2);--accent: #f59e0b;--accent-soft: rgba(245, 158, 11, .15);--text: #f8fafc;--text-2: #94a3b8;--muted: #64748b;--border: #1f3144;--border-light: #294158;--success: #34d399;--success-soft: rgba(52, 211, 153, .15);--warning: #fbbf24;--warning-soft: rgba(251, 191, 36, .15);--error: #f87171;--error-soft: rgba(248, 113, 113, .15);--shadow: 0 16px 40px rgba(0, 0, 0, .4);--radius-sm: 8px;--radius: 12px;--radius-lg: 16px;--font: "IBM Plex Sans", system-ui, -apple-system, sans-serif;--display: "Outfit", system-ui, sans-serif;--serif: "Source Serif 4", Georgia, serif}html[data-theme=light],html.light{color-scheme:light;--bg: #f8fafc;--surface: #ffffff;--card: #ffffff;--card-alt: #f1f5f9;--primary: #0284c7;--primary-hover: #0369a1;--primary-glow: rgba(2, 132, 199, .15);--accent: #d97706;--accent-soft: rgba(217, 119, 6, .12);--text: #0f172a;--text-2: #334155;--muted: #64748b;--border: #e2e8f0;--border-light: #cbd5e1;--success: #059669;--success-soft: rgba(5, 150, 105, .12);--warning: #d97706;--warning-soft: rgba(217, 119, 6, .12);--error: #dc2626;--error-soft: rgba(220, 38, 38, .12);--shadow: 0 10px 30px rgba(15, 23, 42, .08)}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100%}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{font-family:var(--display);font-weight:700;color:var(--text);line-height:1.25}button,input,textarea,select{font-family:inherit}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;border:none;background:none}.site{min-height:100vh;display:flex;flex-direction:column}.site-header{position:sticky;top:0;z-index:100;background:#0a1118e0;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:background .2s ease}html[data-theme=light] .site-header{background:#ffffffeb}.site-header-inner{max-width:1240px;margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:12px;text-align:left}.brand-mark{width:38px;height:38px;border-radius:10px;object-fit:contain;box-shadow:0 4px 12px #38bdf833}.brand-text{display:flex;flex-direction:column}.brand-title{font-family:var(--display);font-size:1.05rem;font-weight:800;letter-spacing:-.01em;color:var(--text);display:flex;align-items:center;gap:6px}.brand-subtitle{font-size:.75rem;color:var(--text-2);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.site-nav{display:flex;align-items:center;gap:6px}.nav-link{padding:8px 14px;border-radius:8px;color:var(--text-2);font-size:.92rem;font-weight:600;transition:all .15s ease;display:flex;align-items:center;gap:6px;text-decoration:none!important}.nav-link:hover{color:var(--text);background:var(--surface)}.nav-link.active{color:var(--primary);background:#38bdf81a}.header-actions{display:flex;align-items:center;gap:12px}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:var(--surface);border:1px solid var(--border);color:var(--text-2);transition:all .15s ease}.icon-btn:hover{color:var(--text);border-color:var(--border-light)}.primary-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:9px 18px;border-radius:10px;background:var(--primary);color:#041325;font-weight:700;font-size:.92rem;transition:all .15s ease;box-shadow:0 4px 14px #38bdf840}.primary-btn:hover{background:#7dd3fc;transform:translateY(-1px)}.ghost-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:8px 16px;border-radius:10px;background:var(--surface);border:1px solid var(--border);color:var(--text);font-weight:600;font-size:.9rem;transition:all .15s ease}.ghost-btn:hover{background:var(--card-alt);border-color:var(--border-light)}.site-main{flex:1}.page{max-width:1200px;margin:0 auto;padding:40px 24px 80px}.hero{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:36px}.hero-content{max-width:780px}.eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--primary);margin-bottom:8px}.hero h1{font-size:2.5rem;letter-spacing:-.02em;margin-bottom:14px}.hero p{font-size:1.08rem;color:var(--text-2);line-height:1.6}.progress-pill,.gold-pill{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:9999px;font-size:.88rem;font-weight:700;white-space:nowrap}.progress-pill{background:#38bdf81f;color:var(--primary);border:1px solid 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#0003}.test-card.locked{opacity:.85}.accent-bar{position:absolute;top:0;left:0;right:0;height:4px}.test-card-header{display:flex;justify-content:space-between;align-items:center}.test-card-badge{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:3px 8px;border-radius:6px;background:var(--surface);color:var(--text-2)}.test-card h3{font-size:1.2rem;color:var(--text)}.test-card p{font-size:.88rem;color:var(--text-2);line-height:1.5}.test-card-footer{margin-top:auto;padding-top:12px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;font-size:.82rem;color:var(--text-2)}.unit-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:16px;transition:border-color .15s ease}.unit-card:hover{border-color:var(--border-light)}.unit-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.unit-kicker{font-size:.78rem;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.05em}.unit-header h3{font-size:1.25rem;margin-top:4px}.unit-lessons-list{display:flex;flex-direction:column;gap:8px}.lesson-item{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:var(--surface);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:.9rem;font-weight:500;transition:all .15s ease}.lesson-item:hover{background:var(--card-alt);border-color:var(--primary)}.lesson-item.completed{border-color:var(--success)}.lesson-item.locked{opacity:.65}.exam-runner{display:flex;flex-direction:column;min-height:calc(100vh - 68px);background:var(--bg)}.exam-bar{background:var(--surface);border-bottom:1px solid var(--border);padding:12px 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h4{font-size:1.15rem;color:var(--text);margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}.passage-body{font-family:var(--serif);font-size:1.05rem;line-height:1.8;color:var(--text);white-space:pre-line}.question-panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;gap:24px}.question-meta-row{display:flex;justify-content:space-between;align-items:center}.question-number-badge{font-size:.85rem;font-weight:700;text-transform:uppercase;color:var(--primary)}.flag-btn{display:inline-flex;align-items:center;gap:6px;font-size:.85rem;font-weight:600;color:var(--text-2);padding:6px 12px;border-radius:6px;border:1px solid var(--border);transition:all .15s ease}.flag-btn.flagged{background:var(--warning-soft);color:var(--warning);border-color:var(--warning)}.question-stem{font-size:1.2rem;font-weight:600;color:var(--text);line-height:1.5}.options-list{display:flex;flex-direction:column;gap:12px}.option-item{display:flex;align-items:center;gap:14px;padding:16px 20px;background:var(--surface);border:1.5px solid var(--border);border-radius:10px;color:var(--text);text-align:left;font-size:1.02rem;transition:all .15s ease}.option-item:hover{border-color:var(--primary);background:var(--card-alt)}.option-item.selected{border-color:var(--primary);background:#38bdf81a;box-shadow:0 0 0 1px var(--primary)}.option-item.correct{border-color:var(--success);background:var(--success-soft)}.option-item.wrong{border-color:var(--error);background:var(--error-soft)}.option-indicator{width:28px;height:28px;border-radius:50%;border:1.5px solid var(--border-light);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.88rem;flex-shrink:0;color:var(--text-2)}.option-item.selected .option-indicator{border-color:var(--primary);background:var(--primary);color:#041325}.exam-nav-panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;gap:16px;position:sticky;top:140px;max-height:calc(100vh - 200px)}.matrix-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;overflow-y:auto;max-height:380px;padding-right:4px}.matrix-btn{aspect-ratio:1;border-radius:6px;background:var(--surface);border:1px solid var(--border);font-size:.85rem;font-weight:700;color:var(--text-2);display:flex;align-items:center;justify-content:center;position:relative;transition:all .15s ease}.matrix-btn:hover{border-color:var(--text-2)}.matrix-btn.answered{background:#38bdf826;border-color:var(--primary);color:var(--primary)}.matrix-btn.current{box-shadow:0 0 0 2px var(--primary)}.matrix-btn.flagged:after{content:"";position:absolute;top:3px;right:3px;width:6px;height:6px;border-radius:50%;background:var(--warning)}.scratchpad-container{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.scratchpad-textarea{width:100%;min-height:220px;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:14px;font-family:Courier New,Courier,monospace;font-size:.95rem;color:var(--text);line-height:1.5;resize:vertical}.scratchpad-textarea:focus{outline:none;border-color:var(--primary)}.flashcard-wrap{perspective:1000px;max-width:680px;margin:0 auto}.flashcard-inner{position:relative;width:100%;min-height:380px;border-radius:var(--radius-lg);background:var(--card);border:1.5px solid var(--border);box-shadow:var(--shadow);cursor:pointer;padding:36px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;transition:transform .4s cubic-bezier(.16,1,.3,1),border-color .2s ease}.flashcard-inner:hover{border-color:var(--primary)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;background:#000000bf;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;padding:20px}.modal-card{width:100%;max-width:540px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;box-shadow:0 24px 60px #00000080;position:relative}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.close-btn{color:var(--text-2);padding:6px;border-radius:6px;transition:color .15s ease}.close-btn:hover{color:var(--text)}.site-footer{border-top:1px solid var(--border);background:var(--surface);padding:48px 24px}.site-footer-inner{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:24px}.site-footer-links{display:flex;gap:20px}.site-footer-links a{color:var(--text-2);font-size:.9rem}.site-footer-links a:hover{color:var(--text)}@media(max-width:980px){.exam-stage,.exam-stage.split-reading{grid-template-columns:1fr}.passage-panel{position:static;max-height:none}.site-nav{display:none}}