@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap";:root,[data-theme=blue]{--bg-color: #eef6ff;--bg-sidebar: rgba(255,255,255,.72);--bg-hover: rgba(59,130,246,.07);--bg-surface: rgba(255,255,255,.55);--text-main: #0f172a;--text-muted: #64748b;--border-color: rgba(148,163,184,.25);--accent-color: #2563eb;--accent-hover: #1d4ed8;--accent-light: rgba(37,99,235,.12);--accent-rgb: 37,99,235;--success-color: #10b981;--danger-color: #ef4444;--warm-color: rgba(251,191,36,.12);--cool-color: rgba(99,102,241,.12);--gradient-hero: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 50%, #f0fdf4 100%);--shadow-color: rgba(37,99,235,.08)}[data-theme=purple]{--bg-color: #f5f0ff;--bg-sidebar: rgba(255,255,255,.72);--bg-hover: rgba(139,92,246,.07);--bg-surface: rgba(255,255,255,.55);--text-main: #1e1b4b;--text-muted: #7c3aed;--border-color: rgba(139,92,246,.2);--accent-color: #7c3aed;--accent-hover: #6d28d9;--accent-light: rgba(124,58,237,.12);--accent-rgb: 124,58,237;--gradient-hero: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 50%, #fdf4ff 100%);--shadow-color: rgba(124,58,237,.08)}[data-theme=green]{--bg-color: #f0fdf4;--bg-sidebar: rgba(255,255,255,.72);--bg-hover: rgba(16,185,129,.07);--bg-surface: rgba(255,255,255,.55);--text-main: #052e16;--text-muted: #059669;--border-color: rgba(16,185,129,.2);--accent-color: #059669;--accent-hover: #047857;--accent-light: rgba(5,150,105,.12);--accent-rgb: 5,150,105;--gradient-hero: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 50%, #ecfdf5 100%);--shadow-color: rgba(5,150,105,.08)}[data-theme=orange]{--bg-color: #fff7ed;--bg-sidebar: rgba(255,255,255,.72);--bg-hover: rgba(234,88,12,.07);--bg-surface: rgba(255,255,255,.55);--text-main: #431407;--text-muted: #c2410c;--border-color: rgba(234,88,12,.2);--accent-color: #ea580c;--accent-hover: #c2410c;--accent-light: rgba(234,88,12,.12);--accent-rgb: 234,88,12;--gradient-hero: linear-gradient(135deg, #fed7aa 0%, #fde68a 50%, #fff7ed 100%);--shadow-color: rgba(234,88,12,.08)}[data-theme=graphite]{--bg-color: #f8fafc;--bg-sidebar: rgba(255,255,255,.72);--bg-hover: rgba(71,85,105,.07);--bg-surface: rgba(255,255,255,.55);--text-main: #0f172a;--text-muted: #475569;--border-color: rgba(148,163,184,.25);--accent-color: #334155;--accent-hover: #1e293b;--accent-light: rgba(51,65,85,.1);--accent-rgb: 51,65,85;--gradient-hero: linear-gradient(135deg, #e2e8f0 0%, #f1f5f9 50%, #ffffff 100%);--shadow-color: rgba(51,65,85,.06)}:root{--font-sans: "Inter", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 40px;--shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 16px rgba(0,0,0,.06), 0 2px 4px rgba(0,0,0,.04);--shadow-lg: 0 20px 40px rgba(0,0,0,.08), 0 8px 16px rgba(0,0,0,.04);--shadow-xl: 0 32px 64px rgba(0,0,0,.1), 0 16px 32px rgba(0,0,0,.06);--shadow-glow: 0 0 0 3px var(--accent-light), 0 4px 16px var(--shadow-color);--radius-sm: 6px;--radius-md: 12px;--radius-lg: 18px;--radius-xl: 24px;--radius-full: 9999px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-sans);font-size:15px;color:var(--text-main);background:var(--bg-color);min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-attachment:fixed}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}input,textarea,select{font-family:inherit;color:inherit}a{color:inherit;text-decoration:none}.app-container{display:flex;height:100vh;width:100vw;overflow:hidden;background:var(--gradient-hero)}.main-content{flex:1;overflow-y:auto;padding:var(--spacing-xl);display:flex;flex-direction:column;scrollbar-width:thin;scrollbar-color:var(--border-color) transparent}.main-content::-webkit-scrollbar{width:5px}.main-content::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:99px}@media (max-width: 768px){.main-content{padding:var(--spacing-md)}}.content-wrapper{max-width:880px;margin:0 auto;width:100%}.flex{display:flex}.flex-col{display:flex;flex-direction:column}.items-center{align-items:center}.items-end{align-items:flex-end}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-xs{gap:var(--spacing-xs)}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.gap-xl{gap:var(--spacing-xl)}.text-muted{color:var(--text-muted)}.text-accent{color:var(--accent-color)}.text-xs{font-size:.75rem}.text-sm{font-size:.875rem}.text-lg{font-size:1.125rem;font-weight:600}.text-xl{font-size:1.5rem;font-weight:700}.text-2xl{font-size:2rem;font-weight:800;letter-spacing:-.03em}.font-medium{font-weight:500}.font-bold{font-weight:700}.font-extrabold{font-weight:800}.text-center{text-align:center}.w-full{width:100%}.cursor-pointer{cursor:pointer}.p-sm{padding:var(--spacing-sm)}.p-md{padding:var(--spacing-md)}.p-lg{padding:var(--spacing-lg)}.p-xl{padding:var(--spacing-xl)}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.flex-1{flex:1}.inline{display:inline}.mr-xs{margin-right:var(--spacing-xs)}@media (max-width: 768px){.text-2xl{font-size:1.6rem}.text-xl{font-size:1.25rem}}.card{background:var(--bg-sidebar);backdrop-filter:blur(40px) saturate(200%);-webkit-backdrop-filter:blur(40px) saturate(200%);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-sm);transition:box-shadow .25s ease,transform .25s ease,background .2s ease;position:relative}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.interactive-item{padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);transition:background .15s ease,color .15s ease;cursor:pointer}.interactive-item:hover{background:var(--bg-hover)}.interactive-item:active{transform:scale(.98)}.icon-button{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:var(--radius-sm);color:var(--text-muted);transition:all .15s ease;border:none;background:transparent;cursor:pointer;flex-shrink:0}.icon-button:hover{background:var(--bg-hover);color:var(--accent-color)}.icon-button:active{transform:scale(.9)}.btn-primary{display:inline-flex;align-items:center;gap:var(--spacing-sm);padding:10px 20px;background:var(--accent-color);color:#fff;font-weight:600;font-size:.9rem;border-radius:var(--radius-full);border:none;cursor:pointer;transition:all .2s cubic-bezier(.2,0,0,1);box-shadow:0 2px 8px rgba(var(--accent-rgb),.3);letter-spacing:.01em;white-space:nowrap}.btn-primary:hover{background:var(--accent-hover);box-shadow:0 6px 16px rgba(var(--accent-rgb),.4);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(var(--accent-rgb),.2)}.btn-secondary{display:inline-flex;align-items:center;gap:var(--spacing-sm);padding:9px 18px;background:var(--bg-surface);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);color:var(--text-main);font-weight:500;font-size:.9rem;border-radius:var(--radius-full);border:1px solid var(--border-color);cursor:pointer;transition:all .2s ease}.btn-secondary:hover{background:#fffc;border-color:var(--accent-color);color:var(--accent-color);transform:translateY(-1px)}.btn-secondary.active{background:var(--accent-color);color:#fff;border-color:var(--accent-color)}.btn-sm{padding:6px 14px;font-size:.8rem}.form-input{width:100%;padding:10px 14px;border:1.5px solid var(--border-color);border-radius:var(--radius-md);background:#ffffffb3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:all .2s ease;font-size:.95rem;outline:none}.form-input:focus{border-color:var(--accent-color);box-shadow:0 0 0 3px var(--accent-light);background:#ffffffe6}@media (max-width: 768px){.form-input{font-size:16px}}.apple-loading-screen{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--gradient-hero);display:flex;align-items:center;justify-content:center;z-index:9999;opacity:1;flex-direction:column;gap:20px}.apple-logo-container{color:var(--accent-color);will-change:transform,opacity;transform-origin:center}@keyframes appleSpin{0%{transform:scale(.9) rotate(0);opacity:.5}50%{transform:scale(1.1) rotate(180deg);opacity:1}to{transform:scale(.9) rotate(360deg);opacity:.5}}@keyframes appleFlyUp{0%{transform:scale(1.1);opacity:1}to{transform:translateY(-150vh) scale(.5);opacity:0}}.app-entry.hidden-initial{transform:translateY(24px);opacity:0;pointer-events:none}@keyframes slideDownIn{0%{transform:translateY(24px);opacity:0}to{transform:translateY(0);opacity:1}}.fade-in{animation:fadeIn .35s ease forwards}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.animate-spin{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.modal-content{width:90%;max-width:500px;box-shadow:var(--shadow-xl);max-height:90vh;overflow-y:auto;animation:modalIn .3s cubic-bezier(.16,1,.3,1) forwards}@keyframes modalIn{0%{opacity:0;transform:scale(.94) translateY(12px)}to{opacity:1;transform:scale(1) translateY(0)}}@media print{:root{--text-main: #000;--text-muted: #555;--bg-color: #fff;--bg-sidebar: #fff;--border-color: #ddd}.no-print{display:none!important}.app-container{height:auto;overflow:visible}.main-content{padding:0}body{background:#fff!important;color:#000!important}.card{box-shadow:none;border:1px solid #ccc;break-inside:avoid;margin-bottom:var(--spacing-lg)}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,d09GMgABAAAAAA4oAA4AAAAAHbQAAA3TAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAABmAAgRQIDgmcDBEICo1oijYBNgIkA14LMgAEIAWJAAeBHAyBHBvbGiMRdnO0IkRRkiYDgr9KsJ1NUAf2kILNxgUmgqIgq1P89vcbIcmsQbRps3vCcXdYOKSWEPEKgZgQkprQQsxIXUgq0DqpGKmIvrgkeVGtEQD9DzAO29fM9jYhxZEsL2FeURH2JN4MIcTdO049NCVdxQ/w9NrSYFEBKTDKpLKfNkCGDc1RwjZLQcm3vqJ2UW9Xfa3tgAHz6ivp6vgC2yD4/6352ndnN0X0TL7seypkjZlMsjmZnf0Mm5Q+JykRWQBKCVCVPbARPXWyQtb5VgLB6Biq7/Uixcj2WGqdI8tGSgkuRG+t910GKP2D7AQH0DB9FMDW/obJZ8giFI3Wg8Cvevz0M+5m0rTh7XDBlvo9Y4vm13EXmfttwI4mBo1EG15fxJhUiCLbiiyCf/ZA6MFAhg3pGIZGdGIVjtPn6UcMk9A/UUr9PhoNsCENw1APAq0gpH73e+M+0ueyHbabc3vkbcdtzcf/fiy+NxQEjf9ud/ELBHAXJ0nk4z+MXH2Ev/kWyV4k7SkvpPc9Qr38F6RPWnM9cN6DJ0AdD1BhtgABtmoRoFCvPsBAumNm6soZG2Gk5GyVTo2sJncSyp0jQTYoR6WDvTwaaEcHsxHfvuWhHA3a6bN7twRKtcGok6NsCi7jYRrM2jExsUFMxMQYuJbMhuWNOumEJy9hi29Dmg5zMp/A5+hhPG19j1vBrq8JTLr8ki5VLPmG/PynJHVul440bxg5xuymHUFPBshC+nA9I1FmwbRBTNHAcik3Oae0cxKoI3MOriM42UrPe51nsaGxJ+WfXubAsP84aabUlQSJ1IiE0iPETLUU4CATgfXSCSpuRFRmCGbO+wSpAnzaeaCYW1VNEysRtuXCEL1kUFUbbtMv3Tilt/1c11jt3Q5bbMa84cpWipp8Elw3MZhOHsOlwwVUQM3lAR35JiFQbaYCRnMF2lxAWoOg2gyoIV4PouX8HytNIfLhqpJtXB4vjiViUI8IJ7bkC4ikkQvKksnOTKICwnqWSZ9YS5f0WCxmpgjbIq7EJcM4aI2nmhLNY2JIUgOjXZFWBHb+x5oh6cwb0Tv1ackHdKi0I9OO2wE9aogIOn540CCCziyhN+IaejtgAONKznHlHyutPrHGwCx9S6B8kfS4Mfi4Eyv7OU730bT1SCBjt834cXsf43zVjPUqqJjgrjeGnBxSG4aYAKFuVbeCfkDIjAqMb6yLNIbCuvXhMH2/+k2vkNpkORhR59N1CkzoOENvneIosjYmuTxlhUzaGEJQ/iWqx4dmwpmKjrwTiTGTCVozNAYqk/zXOndWxuWSmJkQpJw3pK5KX6QrLt5LATMqpmPAQhkhK6PUjzHUn7E0gHE0kPE0iKkolgkUx9SZmVAdDgpffdyJKg3k7VmzYGCwVXGz/tXmkOIp+vcWs+EMuhhvN0h9uhfzWJziBQmCREGSIFmQIkgVpAnSBRmC//6hkLZwaVhwxlrJSOdqlFtOYxlau9F2QN5Y98xmIAsiM1HVp2VFX+DHHGg6Ecjh3vmqtidX3qHI2qycTk/iwxSt5UzTmEP92ZBnEWTk4Mx8Mpl78ZDokxg/KWb+Q0QkvdKVmq3TMW+RXEgrsziSAfNXFMhDc60N5N9jQzjfO0kBKpUZl0ZmwJ41j/B9Hz6wmRaJB84niNmQrzp9eSlQCDDzazGDdVi3P36VZQ+Jy4f9UBNp+3zTjqI4abaFAm+GShVaXlsGdF3FYzZcDI6cori4kMxUECl9IjJZpzkvitAoxKue+90pDMvcKRxLl53TmOKCmV/xRolNKSqqUxc6LStOETmFOiLZZptlZepcKiAzteG8PEdpnQpbOMNcMsR4RR2Bs0cKFEvSmIjAFcnarqwUL4lDhHmnVkwu1IwshbiCcgvOheZuYyOteufZZwlcTlLgnZ3o/WcYdzZHW/WGaqaVfmTZ1aWCceJjkbZqsfbkOtcFlUZM/jy+hXHDbaUobWqqXaeWobbLO99yG5N3U4wxco0rQGGcOLASFMXeJoham8M+/x6O2WywK2l4HGbq1CoUyC/IZikQhdq3SiuNrvAEj0AVu9x2x3lp/xWzahaxidezFVtdcb5uEnzyl0ZmYiuKI0exvCd4Xc9CV1KB0db00z92wDPde0kukbvZIWN6jUWFTmPIC/Y4UPCm8UfDTFZpZNon1qLFTkBhxzB+FjQRA2Q/YRJT8pQigslMaUpFyAG8TMlXigiqmAZX4xgijKjRlGpLE0GdplRfCaJo0JQaSxNBk6ZmMzcya0FmrcisDdn0Q3HI2sWSppYigmlM1XT/kLQZSNpMJG0WkjYbSZuDpM1F0uYhFc1HxU4m1QJjDK6iL0S5uSj5rgXc3RejEigtcRBtqYPQsiTskmO5vosV+q4VGIKbOkDg0jtRrq+Em1YloaTFar3EGr1EUC8R0kus1Uus00usL97ABr2BjXoDm/QGNhuWtMVBKOwg/i78lT7hBsAvDmwHc/ao3vmUbBmhjeYySZNWvGkfZAgISDSaDo1SVpzGDsAEkF8B+gEapViUoZgUWXcRIGFZNm6gWbAKk0bp0k1MHG9fLYtV4iS2SmLEQFARzRcnf9PUS0LVn05/J9MiRRBU3v2IrvW974v4N00L7ZMk0wXP1409CHo/an8zTRHD3eSJ6m8D4YMkZNl3M79sqeuAsr/m3f+8/yl7A50aiAEJgeBeMWzu7ui9UfUBCe2TIqZIoOd/3/udRBOQidQZUERzb2/VwZN1H/Sju82ew2H2Wfr6qvfVf3hqwDvAIpkQVFy4B9Pe9e4/XvPeceu7h3dvO56iJPf0+A6cqA2ip18ER+iFgggiuOkvj24bby0N9j2UHIkgqIt+sVgfodC4YghLSMjSZbH0VR/6dMDrYJeKHilKTemt6v6kvzvn3/RrdWtr0GoN/xL+Sex/cPYLUpepx9cz/D46UPU5KXgAQa+NDps1v6J3xP1i2HtaDB0M9aX2deA7SYff//+gUCovMmIK/qfsFcOk+4Y5ZN97XlG6zebqtMbKgeRFi51vnxTQYBUik2rS/Cn6PC8ADR8FGxsRPB82dzfND90gIcshOcYUkfjherBz53odpm6TP8txlwOZ71xmfHHOvq053qFF/MRlS3jP0ELudrf2OeN8DHvp6ZceLe8qKYvWz/7yp0u4dKPfli3CYq0O13Ih71mylJ80tOi10On8wi+F4+LWgDPeJ30msSQt9/vkmHq9/Lvo2b461mP801v3W4xTcs6CbvF9UDdrSt+A8OUbpSh55qAUFXWznBBfdeJ8a4d7ugT5tvxUza3h9m4H7ptTqiG4z0g5dc0X29OcGlhpGFMpQo9ytTS+NViZpNdvU4kWx+LKxNY10kQ1yqGXrhe4/1nvP7E+nd5A92TtaRplbHSqoIdOqtRWti+fkB5/n1+/VvCmz12pG1kpQWsfi1ftlBobm0bpngs16CHkbIwdLnParxtTV3QYRlfJ0KFskH7pdN/YDn+yRuSd7sNH3aO0DYPggk6uWuXrfOc+fa3VTxFVvKaNxHsiHmsXyCLIE5yuOeN3/Jdf8HBL/5M6shjyhxHx9BjB1O0+4NLOnjLLSxwO7ukN4jMbOIcD879KLSi6Pk61Oqm2377n8079PXEEQ7cy7OKEC9nbpet118fxweTafpt69x/Bt8UqGzNQt7aelpc44dn5cqhwf71+qKp/Zf/+a0zcizOUWpl/iBcSXip0pplkatCchoH5c5aUM8I7/dWxAej8WicPL1URFZ9BDJelUwEwTkGqUhgSlydVes95YdXvhh9Gfz/aeFWvgVb4tuLbcv4+wLdutVZv/cUonwBD/6eDlE0aSiKK/uoH3+J1wDE/jMVqY2ysGufN84oIXB0sPzy8ollX/LegY74DgJXJR57sn+VGza0x3DnuIgABFM15LmajjjsNlYj+JEZGbuRYcAMOWxFkPN2w6Wd46xo4gVWQR/X4lyI/R6K/YK0110GzudPRW7Y+UOBGTfNNzHeYT0fiH0taunBpq9HEW8OKSaBGj21L0MqenEmNRWBAWDWAk4CpNoEZJ2tTaPFgbQYj8HxtFilErs3BTRwT8uO1NXQaWfIotchmPkAF5mMBAliEmZiOGVgCG9LgRzpscMAOOwowlT3JhusdazXGSC/hxR3UlmWVwWHpOIKheqONvjyhSiTHIkVUco5bnji8m//zL7PKaT1Vl5I6UE609f+gkr6MZKVyKc7zJRmCahLsdlyA5fdQkRSan9LgnnLEyGSkaKJCJog0wAgvepWBt80+1yKln1bMVtCljfNWDueKLsWwaEbBSfSPTEmVRsUcYYMnEjcjeyCZzBXK9E9BYBXLKjOSpUDR+nEV3TFSUdQaz+ot98QxgXwx0GQ+EEUAKB2qZPkQQ0GqFD8UPFMqyaCHM24BZmSGic9EYMagKizOw9Hz50DMrDLrqqLkTAhplMictiCAx5S3BIUQdeJeLnBy2CNtMfz6cV4u8XKoFZQesbf9YZiIERiHjaNodDW6LgcirX/mPnJIkBGDUpTBhSa0EIr38D5hCIszhCM8URGBqImoWjpvpt1ebu/v3Gl3qJfMnNM+9V+kiRFyROTPHQWOcs1dNW94/ukKMPZBvDi55i5CttdeJz84DLngLqjcdwEZ87bFFR8CIG35OAkDVN6VRDZ7aq67NteYqZ2lpT8oYB2CytoBd6VuAx4WgiAsnuj3WohG+LugzXiQRDeM3XYXlULv4dp5VFYC) format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.16.33"}.katex .katex-mathml{clip:rect(1px,1px,1px,1px);border:0;height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}.formula-block{position:relative;margin-bottom:var(--spacing-lg);border-radius:var(--radius-lg);transition:box-shadow .2s ease}.formula-display-mode,.formula-edit-mode{width:100%}.math-container{display:block;text-align:center;padding:var(--spacing-xl) var(--spacing-lg);background:linear-gradient(135deg,rgba(var(--accent-rgb),.04),#fff9);border:1px solid var(--border-color);border-radius:var(--radius-md);min-height:130px;overflow-x:auto;position:relative}.math-container:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:var(--radius-md);background:radial-gradient(ellipse at 50% -20%,rgba(var(--accent-rgb),.05),transparent 70%);pointer-events:none}.editor-split{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-md);margin-top:var(--spacing-md)}.preview-box{border:1.5px solid var(--border-color);border-radius:var(--radius-md);padding:var(--spacing-md);background:#ffffffb3;min-height:110px;display:flex;align-items:center;justify-content:center;overflow-x:auto}.upload-zone{border:2px dashed var(--border-color);border-radius:var(--radius-md);padding:var(--spacing-xl);margin-top:var(--spacing-md);text-align:center;cursor:pointer;background:#fff6;transition:all .2s ease}.upload-zone:hover{border-color:var(--accent-color);background:var(--accent-light);transform:scale(1.005)}.upload-zone.processing{opacity:.7;pointer-events:none}.legend-grid{display:flex;flex-wrap:wrap;gap:var(--spacing-sm)}.legend-item{display:flex;align-items:center;gap:var(--spacing-sm);padding:5px 12px;background:var(--bg-sidebar);border:1px solid var(--border-color);border-radius:var(--radius-full);font-size:.8rem;transition:all .15s ease}.legend-item:hover{border-color:var(--accent-color);background:var(--accent-light)}.legend-symbol{color:var(--accent-color);font-weight:700;min-width:20px;display:inline-flex;align-items:center;justify-content:center}.legend-desc{color:var(--text-muted);font-weight:500}.formula-calculator-container{background:#ffffff80;border-radius:var(--radius-md);padding:var(--spacing-md);border:1px solid var(--border-color)}.calculation-result{animation:fadeIn .3s ease}.quick-insert-toolbar{display:flex;gap:4px;flex-wrap:wrap}.quick-insert-toolbar .btn-secondary{padding:4px 8px;font-size:.75rem;font-family:var(--font-mono);border-radius:var(--radius-sm);background:var(--bg-hover);border:1px solid var(--border-color);color:var(--text-main)}.quick-insert-toolbar .btn-secondary:hover{background:var(--accent-light);color:var(--accent-color);border-color:var(--accent-color)}.camera-view{width:100%}.formula-header{display:flex;align-items:center;justify-content:space-between}.formula-header h3{font-size:1.2rem;font-weight:700;letter-spacing:-.01em}@media (max-width: 768px){.editor-split{grid-template-columns:1fr}.quick-insert-toolbar{flex-wrap:wrap;justify-content:flex-start}.formula-header{flex-wrap:wrap;gap:var(--spacing-sm)}}.chat-widget-container{position:fixed;bottom:28px;right:28px;z-index:10000;display:flex;flex-direction:column;align-items:flex-end;gap:12px}.chat-fab-button{width:60px;height:60px;border-radius:50%;background:linear-gradient(145deg,var(--accent-color),var(--accent-hover));color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;border:none;box-shadow:0 8px 24px rgba(var(--accent-rgb),.45),0 2px 8px #0000001a;transition:transform .3s cubic-bezier(.175,.885,.32,1.4),box-shadow .3s ease}.chat-fab-button:hover{transform:scale(1.1) rotate(-5deg);box-shadow:0 12px 32px rgba(var(--accent-rgb),.5),0 4px 12px #0000001a}.anim-pulse{animation:fabPulse 3s ease-in-out infinite}@keyframes fabPulse{0%,to{box-shadow:0 8px 24px rgba(var(--accent-rgb),.45),0 0 rgba(var(--accent-rgb),.3)}50%{box-shadow:0 8px 24px rgba(var(--accent-rgb),.45),0 0 0 12px rgba(var(--accent-rgb),0)}}.chat-window{position:absolute;bottom:72px;right:0;width:420px;height:660px;max-height:calc(100vh - 100px);background:#ffffffeb;backdrop-filter:blur(60px) saturate(220%);-webkit-backdrop-filter:blur(60px) saturate(220%);border:1px solid var(--border-color);border-radius:var(--radius-xl);box-shadow:0 24px 64px #00000024,0 8px 24px rgba(var(--accent-rgb),.06);display:flex;flex-direction:column;overflow:hidden;animation:chatSlideIn .35s cubic-bezier(.16,1,.3,1) forwards}@keyframes chatSlideIn{0%{transform:translateY(20px) scale(.94);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}.chat-window.is-fullscreen{position:fixed;bottom:0!important;right:0!important;width:100vw!important;height:100vh!important;max-height:none!important;border-radius:0!important;z-index:10002}.chat-window-header{flex:none;height:64px;background:linear-gradient(90deg,rgba(var(--accent-rgb),.06),#ffffff80);padding:0 var(--spacing-md);border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.bot-icon-circle-sm{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--accent-color),var(--accent-hover));display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(var(--accent-rgb),.4);flex-shrink:0}.chat-window-messages{flex:1;overflow-y:auto;padding:var(--spacing-md);display:flex;flex-direction:column;gap:10px;scroll-behavior:smooth;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--border-color) transparent}.chat-window-messages::-webkit-scrollbar{width:3px}.chat-window-messages::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:99px}.chat-bubble-container-sm{display:flex;flex-direction:column;max-width:90%;gap:4px}.chat-bubble-container-sm.user-msg{align-self:flex-end}.chat-bubble-container-sm.ai-msg{align-self:flex-start}.chat-bubble-sm{padding:10px 16px;border-radius:18px;position:relative}.user-msg .chat-bubble-sm{background:linear-gradient(135deg,var(--accent-color),var(--accent-hover));color:#fff;border-bottom-right-radius:5px;box-shadow:0 4px 12px rgba(var(--accent-rgb),.3)}.ai-msg .chat-bubble-sm{background:#fffffff2;border:1px solid var(--border-color);color:var(--text-main);border-bottom-left-radius:5px;box-shadow:0 1px 4px #0000000d}.loading-bubble{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-style:italic;font-size:.85rem;padding:10px 16px}.message-text{display:block;font-size:.9rem;line-height:1.7;word-break:break-word}.message-text>span{display:inline}.message-text .katex-display{display:block;overflow-x:auto;margin:8px 0;padding:8px;background:rgba(var(--accent-rgb),.04);border-radius:8px}.math-block-wrapper{display:block;margin:12px 0;padding:12px;background:rgba(var(--accent-rgb),.04);border:1px solid rgba(var(--accent-rgb),.15);border-radius:var(--radius-md);overflow-x:auto}.formula-actions{display:flex;justify-content:flex-end;gap:6px;margin-top:8px;border-top:1px solid var(--border-color);padding-top:8px;position:relative}.btn-action-tiny{background:transparent;border:1px solid var(--border-color);color:var(--text-muted);font-size:.72rem;font-weight:500;display:inline-flex;align-items:center;gap:4px;cursor:pointer;padding:4px 10px;border-radius:var(--radius-full);transition:all .2s ease}.btn-action-tiny:hover{background:var(--accent-light);color:var(--accent-color);border-color:var(--accent-color)}.chat-window-input-container{flex:none;padding:12px;background:#fffffff2;border-top:1px solid var(--border-color)}.image-preview-bar{display:flex;align-items:center;gap:8px;padding:6px 10px;margin-bottom:8px;background:var(--accent-light);border-radius:var(--radius-md);border:1px solid rgba(var(--accent-rgb),.2)}.preview-thumbnail{width:36px;height:36px;object-fit:cover;border-radius:6px;border:1px solid var(--border-color)}.chat-image-attachment{display:block;max-width:100%;max-height:200px;border-radius:var(--radius-md);margin-bottom:8px;object-fit:contain}.chat-window-input{display:flex;align-items:center;gap:6px;background:#fff;padding:6px 6px 6px 14px;border-radius:var(--radius-full);border:1.5px solid var(--border-color);box-shadow:0 2px 8px #0000000a;transition:border .2s}.chat-window-input:focus-within{border-color:var(--accent-color);box-shadow:0 0 0 3px var(--accent-light)}.chat-window-input input{flex:1;border:none;background:transparent;padding:6px 4px;font-size:.9rem;outline:none;color:var(--text-main)}.icon-btn-action{color:var(--text-muted);padding:6px;border-radius:50%;transition:all .15s ease;display:flex;align-items:center;justify-content:center;background:transparent;border:none;cursor:pointer;min-width:32px;min-height:32px}.icon-btn-action:hover{background:var(--bg-hover);color:var(--accent-color)}.send-btn-sm{width:36px;height:36px;border-radius:50%;background:var(--accent-color);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;flex-shrink:0;box-shadow:0 2px 8px rgba(var(--accent-rgb),.35)}.send-btn-sm:hover{background:var(--accent-hover);transform:scale(1.05)}.send-btn-sm.disabled{background:var(--border-color);box-shadow:none;cursor:not-allowed}.save-popover{position:absolute;bottom:calc(100% + 4px);right:0;width:230px;background:#fff;border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:0 8px 24px #0000001f;overflow:hidden;z-index:200;animation:fadeIn .2s ease}.save-popover-header{padding:10px 14px;background:linear-gradient(90deg,rgba(var(--accent-rgb),.07),#ffffff80);font-size:.8rem;font-weight:700;border-bottom:1px solid var(--border-color);color:var(--text-main)}.save-popover-list{max-height:180px;overflow-y:auto}.save-option{display:flex;align-items:center;gap:8px;padding:10px 14px;font-size:.875rem;cursor:pointer;transition:background .15s;color:var(--text-main)}.save-option:hover{background:var(--accent-light);color:var(--accent-color)}@media (max-width: 480px){.chat-window{position:fixed;width:100vw;height:100vh;max-height:none;bottom:0;right:0;border-radius:0;border:none}}.sidebar{width:260px;background:var(--bg-sidebar);backdrop-filter:blur(48px) saturate(220%);-webkit-backdrop-filter:blur(48px) saturate(220%);border-right:1px solid var(--border-color);display:flex;flex-direction:column;flex-shrink:0;height:100vh;transition:transform .3s cubic-bezier(.16,1,.3,1)}.sidebar:before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.6),transparent)}.sidebar-header{padding:14px var(--spacing-md);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-color)}.app-branding{font-weight:700;font-size:1.05rem;-webkit-user-select:none;user-select:none;color:var(--text-main);letter-spacing:-.01em;display:flex;align-items:center;gap:10px;text-decoration:none}.app-logo{color:var(--accent-color);filter:drop-shadow(0 2px 6px rgba(var(--accent-rgb),.35))}.sidebar-section{padding:var(--spacing-sm) 0;display:flex;flex-direction:column}.section-title{padding:10px var(--spacing-md) 4px;display:flex;align-items:center;justify-content:space-between}.section-title span{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);opacity:.7}.nav-menu{display:flex;flex-direction:column;padding:2px var(--spacing-sm);gap:1px}.nav-item{display:flex;align-items:center;gap:10px;color:var(--text-muted);font-size:.875rem;font-weight:500;padding:8px 10px;border-radius:var(--radius-sm);transition:all .15s ease;cursor:pointer;text-decoration:none}.nav-item:hover{background:var(--bg-hover);color:var(--text-main)}.nav-item.active{background:var(--accent-light);color:var(--accent-color);font-weight:600}.nav-item.active svg{color:var(--accent-color)}.sidebar-footer{margin-top:auto;border-top:1px solid var(--border-color);padding:var(--spacing-sm)}.sidebar-section::-webkit-scrollbar{width:3px}.sidebar-section::-webkit-scrollbar-track{background:transparent}.sidebar-section::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:99px}.mobile-header{display:none;padding:12px var(--spacing-md);background:var(--bg-sidebar);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:90;align-items:center;justify-content:space-between;box-shadow:0 2px 16px #0000000a}.mobile-close-btn{display:none}.mobile-backdrop{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a66;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:95}@media (max-width: 768px){.sidebar{position:fixed;z-index:1000;transform:translate(-100%);box-shadow:8px 0 32px #0000001f}.sidebar.open{transform:translate(0)}.mobile-header,.mobile-close-btn{display:flex}.mobile-backdrop{display:block}.main-content{padding:var(--spacing-md);padding-top:0}.content-wrapper{padding-top:var(--spacing-md)}}.exam-prep-container{display:flex;flex-direction:column}.chapter-selection{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.cheat-sheet-preview{background-color:#fff;min-height:800px;border-radius:var(--radius-md);box-shadow:var(--shadow-md);padding:var(--spacing-xl);margin-top:var(--spacing-lg);color:#000;--text-main: #000000;--text-muted: #333333;--bg-sidebar: #f5f5f5;--border-color: #e5e5e5}@media print{@page{margin:1.5cm;size:A4 portrait}body{background-color:#fff}.no-print{display:none!important}.exam-prep-container{padding:0}.cheat-sheet-preview{box-shadow:none;padding:0;margin:0;border-radius:0;min-height:auto}.sheet-chapter-block{break-inside:avoid;page-break-inside:avoid}}.chatbot-container{height:calc(100vh - 120px);max-width:800px;margin:0 auto;position:relative;padding-bottom:var(--spacing-xl)}.chatbot-header{margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-sm);border-bottom:1px solid var(--border-color)}.bot-icon-circle{width:40px;height:40px;background:linear-gradient(135deg,var(--accent-color),var(--cool-color));border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px #2383e24d}.chat-messages{flex:1;overflow-y:auto;padding:var(--spacing-md) 0;display:flex;flex-direction:column;gap:var(--spacing-lg)}.chat-bubble-container{display:flex;gap:var(--spacing-sm);max-width:85%;align-self:flex-start}.user-msg{align-self:flex-end;flex-direction:row-reverse}.avatar{width:32px;height:32px;border-radius:50%;background-color:var(--bg-sidebar);display:flex;align-items:center;justify-content:center;flex-shrink:0;border:1px solid var(--border-color)}.user-msg .avatar{background-color:var(--accent-color);color:#fff}.chat-bubble{padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-lg);line-height:1.5;position:relative}.user-msg .chat-bubble{background-color:var(--accent-color);color:#fff;border-bottom-right-radius:4px}.ai-msg .chat-bubble{background-color:var(--bg-sidebar);border-bottom-left-radius:4px}.message-text{display:block;word-break:break-word;font-size:.95rem;line-height:1.7}.message-text>span{display:inline;white-space:pre-wrap}.message-text .katex{display:inline}.message-text .katex-display{margin:12px 0;overflow-x:auto;text-align:center}.loading-bubble{display:flex;align-items:center;gap:var(--spacing-sm);color:var(--text-muted);font-size:.9rem;padding:var(--spacing-sm) var(--spacing-md)}.chat-input-area{margin-top:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-md);display:flex;align-items:flex-end;gap:var(--spacing-sm);border-radius:var(--radius-xl);background-color:var(--bg-sidebar);border:1px solid var(--border-color);transition:all .2s;position:relative}.chat-input-area.drag-over{border-color:var(--accent-color);background-color:var(--accent-light);box-shadow:0 0 0 3px var(--accent-light)}.chat-input-area:focus-within{border-color:var(--accent-color);box-shadow:0 0 0 3px #2383e21a}.chat-input-area textarea{flex:1;border:none;background:transparent;padding:var(--spacing-sm) 0;font-family:inherit;font-size:1rem;resize:none;max-height:150px;outline:none}.send-button{width:36px;height:36px;border-radius:50%;background-color:var(--accent-color);color:#fff;display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;transition:all .2s;margin-bottom:2px}.send-button:hover:not(.disabled){transform:scale(1.05);filter:brightness(1.1)}.send-button.disabled{background-color:var(--border-color);cursor:not-allowed}.anim-pulse{animation:pulse 2s infinite}@keyframes pulse{0%{transform:scale(1);opacity:1}50%{transform:scale(1.1);opacity:.8}to{transform:scale(1);opacity:1}}@media (max-width: 768px){.chatbot-container{height:calc(100vh - 160px)}.chat-bubble-container{max-width:95%}}.apple-loading-screen{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--gradient-hero);backdrop-filter:saturate(180%) blur(50px);-webkit-backdrop-filter:saturate(180%) blur(50px);display:flex;align-items:center;justify-content:center;z-index:9999;opacity:1}.apple-logo-container{color:var(--accent-color);will-change:transform,opacity;transform-origin:center center;filter:drop-shadow(0 8px 24px rgba(var(--accent-rgb),.4))}.apple-logo-container.anim-spin{animation:appleSpin 1.2s cubic-bezier(.4,0,.2,1) infinite}.apple-logo-container.anim-flyup{animation:appleFlyUp .6s cubic-bezier(.76,0,.24,1) forwards}.apple-loading-screen.fade-out{transition:opacity .5s ease .3s;opacity:0;pointer-events:none}@keyframes appleSpin{0%{transform:scale(.9) rotate(0);opacity:.6}50%{transform:scale(1.1) rotate(180deg);opacity:1}to{transform:scale(.9) rotate(360deg);opacity:.6}}@keyframes appleFlyUp{0%{transform:scale(1.1) rotate(0);opacity:1}to{transform:translateY(-150vh) scale(.5);opacity:0}}.app-entry{height:100vh;width:100vw;will-change:transform,opacity}.app-entry.hidden-initial{transform:translateY(-30px);opacity:0;pointer-events:none}.app-entry.slide-down-in{animation:slideDownIn .7s cubic-bezier(.16,1,.3,1) forwards}@keyframes slideDownIn{0%{transform:translateY(-30px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes toastSlideIn{0%{opacity:0;transform:translateY(16px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.dashboard-hero{position:relative;padding:var(--spacing-xl) 0 var(--spacing-lg);overflow:hidden}.dashboard-hero:before{content:"";position:absolute;top:-60px;right:-60px;width:300px;height:300px;background:radial-gradient(circle,rgba(var(--accent-rgb),.1) 0%,transparent 70%);pointer-events:none}.chapter-card-link{text-decoration:none;color:inherit;display:block}.chapter-card-link .card{cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-lg);text-align:center;gap:var(--spacing-sm);min-height:150px;transition:box-shadow .25s ease,transform .25s ease;overflow:hidden}.chapter-card-link .card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent-color),rgba(var(--accent-rgb),.3));transform:scaleX(0);transform-origin:left;transition:transform .3s ease}.chapter-card-link:hover .card:before{transform:scaleX(1)}.chapter-card-link:hover .card{transform:translateY(-4px);box-shadow:var(--shadow-lg),0 0 0 1px var(--border-color)}.chapter-icon-circle{width:60px;height:60px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--accent-light);color:var(--accent-color);margin-bottom:4px;transition:transform .2s ease}.chapter-card-link:hover .chapter-icon-circle{transform:scale(1.1) rotate(-5deg)}.chapter-header-bar{display:flex;align-items:flex-end;justify-content:space-between;padding-bottom:var(--spacing-md);border-bottom:1px solid var(--border-color);margin-bottom:var(--spacing-xl)}.chapter-breadcrumb{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:var(--spacing-xs)}.katex-display{padding:var(--spacing-md);background:var(--bg-sidebar);border-radius:var(--radius-md);overflow-x:auto;margin:var(--spacing-md) 0!important;border:1px solid var(--border-color)}.katex{color:var(--text-main)}.katex-mathml{display:none!important}.empty-state-card{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px var(--spacing-xl);border:2px dashed var(--border-color);border-radius:var(--radius-lg);background:#ffffff4d;gap:var(--spacing-md)}.empty-state-icon{width:72px;height:72px;border-radius:50%;background:var(--bg-hover);display:flex;align-items:center;justify-content:center;color:var(--text-muted);margin-bottom:var(--spacing-sm)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a66;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);z-index:1000;display:flex;align-items:center;justify-content:center;padding:var(--spacing-lg)}.modal-content{box-shadow:var(--shadow-xl);max-height:90vh;overflow-y:auto;width:90%;max-width:500px}.section-label{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);opacity:.7;margin-bottom:var(--spacing-sm)}
