:root{--bg-primary:#f7f8fb;--bg-secondary:#fff;--bg-tertiary:#eef2f7;--bg-soft:#f1f5f9;--bg-white:#fff;--text-primary:#111827;--text-secondary:#4b5563;--text-dark:#111827;--text-muted:#6b7280;--accent-teal:#0f766e;--accent-teal-hover:#115e59;--accent-blue:#2563eb;--accent-indigo:#4f46e5;--accent-rose:#e11d48;--accent-gold:#d97706;--accent-emerald:#059669;--border-color:#1118271a;--border-color-hover:#11182733;--border-color-light:#e5e7eb;--glass-bg:#ffffffe6;--glass-border:#11182717;--glass-blur:blur(16px);--font-heading:"Be Vietnam Pro", "Segoe UI", system-ui, sans-serif;--font-body:"Be Vietnam Pro", "Segoe UI", system-ui, sans-serif;--shadow-sm:0 1px 2px #1118270d;--shadow-md:0 8px 24px #11182714;--shadow-lg:0 18px 45px #1118271a;--shadow-xl:0 28px 70px #11182724;--glow-teal:0 16px 34px #0f766e24;--glow-indigo:0 16px 34px #4f46e51f;--glow-rose:0 16px 34px #e11d481f;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-normal:.25s cubic-bezier(.4, 0, .2, 1);--transition-slow:.4s cubic-bezier(.4, 0, .2, 1);--radius-sm:8px;--radius-md:8px;--radius-lg:8px;--radius-full:9999px}:root:not(.light-theme){--bg-primary:#070a12;--bg-secondary:#0d1320;--bg-tertiary:#151d2b;--bg-soft:#101827;--text-primary:#f8fafc;--text-secondary:#cbd5e1;--text-dark:#070a12;--text-muted:#94a3b8;--accent-teal:#2dd4bf;--accent-teal-hover:#14b8a6;--accent-blue:#60a5fa;--accent-indigo:#818cf8;--accent-rose:#fb7185;--accent-gold:#fbbf24;--accent-emerald:#34d399;--border-color:#ffffff17;--border-color-hover:#fff3;--glass-bg:#0d1320d6;--glass-border:#ffffff14;--shadow-md:0 8px 24px #00000038;--shadow-lg:0 18px 45px #00000047;--shadow-xl:0 28px 70px #0000005c}body,.glass-panel,.navbar,.footer,.exam-practice-topbar,.answer-option,.question-map-btn,.exam-panel-card,.hero-badge,.topbar,.modal-content,.exam-modal,.input-group,a,button,input,textarea,select{transition:background-color .3s,border-color .3s,color .3s,box-shadow .3s,transform .2s!important}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-body);background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-image:linear-gradient(180deg, #fff 0%, var(--bg-primary) 420px);line-height:1.6}:root:not(.light-theme) body{background-image:linear-gradient(180deg, #090d16 0%, var(--bg-primary) 420px)}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);letter-spacing:-.03em;font-weight:700;line-height:1.25}a{color:inherit;transition:var(--transition-fast);text-decoration:none}button{cursor:pointer;transition:var(--transition-fast);background:0 0;border:none;font-family:inherit}button:focus-visible{outline:2px solid var(--accent-teal);outline-offset:2px}img{max-width:100%;height:auto;display:block}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}.gradient-text{background:linear-gradient(135deg, var(--accent-teal) 0%, var(--accent-blue) 50%, var(--accent-indigo) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.glass-panel{background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:var(--radius-md);box-shadow:var(--shadow-md)}.section{padding:96px 0;position:relative;overflow:hidden}.section-title{text-align:center;margin-bottom:50px;animation:.5s ease-out fadeInUp}.section-title h2{color:var(--text-primary);letter-spacing:-.03em;margin-bottom:14px;font-size:clamp(2rem,4vw,3rem)}.section-title p{color:var(--text-secondary);max-width:600px;margin:0 auto;font-size:1.05rem;line-height:1.6}.btn{border-radius:var(--radius-sm);white-space:nowrap;justify-content:center;align-items:center;gap:8px;padding:12px 28px;font-size:.95rem;font-weight:600;transition:all .25s cubic-bezier(.4,0,.2,1);display:inline-flex}.btn-primary{background:var(--accent-teal);color:#fff;box-shadow:var(--glow-teal)}.btn-primary:hover{background:var(--accent-teal-hover);transform:translateY(-2px);box-shadow:0 18px 35px #0f766e33}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm)}.btn-secondary:hover{background:var(--bg-tertiary);border-color:var(--border-color-hover);transform:translateY(-2px)}.form-input{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);width:100%;color:var(--text-primary);padding:14px 20px;font-family:inherit;font-size:.95rem;transition:all .2s}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse-slow{0%,to{opacity:.2;transform:scale(1)}50%{opacity:.4;transform:scale(1.04)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}.animate-float{animation:4s ease-in-out infinite float}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-tertiary)}::-webkit-scrollbar-thumb{background:#6b728059;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#6b72808c}@media (width<=1024px){.section{padding:70px 0}.section-title h2{font-size:2.2rem}}@media (width<=768px){.section{padding:50px 0}.section-title h2{font-size:1.8rem}.container{padding:0 16px}.btn{padding:10px 24px;font-size:.9rem}}.header-wrapper{z-index:100;width:100%;transition:var(--transition-normal);position:fixed;top:0;left:0}.header-wrapper.scrolled{transform:translateY(0)}.topbar{display:none}.topbar-content{justify-content:space-between;align-items:center;display:flex}.contact-links{gap:20px;display:flex}.contact-item{color:var(--text-secondary);align-items:center;gap:6px;display:flex}.contact-item:hover{color:var(--accent-teal)}.author-badge{align-items:center;gap:8px;display:flex}.author-name{color:#fff;border-radius:var(--radius-sm);background:#ffffff1a;padding:2px 8px;font-size:.8rem;font-weight:700}.navbar{height:76px;-webkit-backdrop-filter:var(--glass-blur);border-bottom:1px solid var(--border-color);transition:var(--transition-normal);background:#fffffff0;align-items:center;display:flex;box-shadow:0 10px 30px #1118270f}.header-wrapper.scrolled .navbar{border-bottom:1px solid var(--border-color);background:#fffffff5;box-shadow:0 14px 35px #11182714}.navbar-container{justify-content:space-between;align-items:center;display:flex}.navbar-logo{font-family:var(--font-heading);letter-spacing:-.03em;align-items:center;gap:6px;font-size:1.45rem;font-weight:900;display:flex}.logo-helper{color:var(--text-primary)}.logo-main{color:var(--accent-teal)}.nav-links{align-items:center;gap:4px;display:flex}.nav-link-item{color:var(--text-secondary);border-radius:var(--radius-sm);transition:color var(--transition-fast);padding:9px 10px;font-size:.88rem;font-weight:800;position:relative}.nav-link-item:hover,.nav-link-item.active{color:var(--accent-teal);background:#0f766e14!important}.nav-link-item:after{display:none}.rose-link{color:var(--accent-rose)!important}.rose-link:hover,.rose-link.active{color:var(--accent-rose)!important;background:#e11d4814!important}.rose-link:after{background:var(--accent-rose)}.api-nav-link{color:#2563eb!important}.api-nav-link:hover,.api-nav-link.active{color:#2563eb!important;background:#2563eb14!important}.api-mobile-link{color:#2563eb;font-weight:800}.auth-action{align-items:center;display:flex}.btn-login-nav{padding:8px 20px!important;font-size:.85rem!important}.search-overlay{z-index:1800;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#11182742;justify-content:center;align-items:flex-start;padding:110px 20px 20px;display:flex;position:fixed;inset:0}.search-modal{background:var(--bg-secondary);border-radius:8px;width:min(720px,100%);padding:18px}.search-modal-head{color:var(--text-primary);justify-content:space-between;align-items:center;gap:16px;margin-bottom:14px;font-weight:850;display:flex}.search-modal-head button{border:1px solid var(--border-color);width:36px;height:36px;color:var(--text-secondary);border-radius:8px;justify-content:center;align-items:center;display:inline-flex}.search-modal-input{border:1px solid var(--border-color);background:var(--bg-primary);border-radius:8px;grid-template-columns:auto 1fr;align-items:center;gap:12px;padding:14px 16px;display:grid}.search-modal-input svg{color:var(--accent-teal)}.search-modal-input input{min-width:0;color:var(--text-primary);font:inherit;background:0 0;border:0;outline:0;font-size:1.05rem}.search-suggestions{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.search-suggestions button{color:var(--accent-teal);background:#0f766e14;border-radius:999px;padding:7px 10px;font-weight:750}.user-profile{color:var(--text-secondary);background:var(--bg-secondary);border-radius:var(--radius-sm);border:1px solid var(--border-color);align-items:center;gap:8px;padding:6px 14px;font-size:.9rem;display:flex}.user-profile span{color:var(--text-primary);font-weight:500}.btn-logout{color:var(--accent-rose);transition:var(--transition-fast);border-left:1px solid #ffffff1a;margin-left:8px;padding-left:8px;font-size:.8rem;font-weight:600}.btn-logout:hover{color:#ff476f;text-decoration:underline}.mobile-toggle{color:var(--text-primary);display:none}.mobile-drawer{z-index:1000;visibility:hidden;width:100vw;height:100vh;transition:visibility var(--transition-normal);position:fixed;top:0;right:0}.mobile-drawer.open{visibility:visible}.mobile-drawer-overlay{-webkit-backdrop-filter:blur(4px);opacity:0;width:100%;height:100%;transition:opacity var(--transition-normal);background:#00000080;position:absolute;top:0;left:0}.mobile-drawer.open .mobile-drawer-overlay{opacity:1}.mobile-drawer-content{background:var(--bg-secondary);border-left:1px solid var(--border-color);width:80%;max-width:320px;height:100%;transition:transform var(--transition-normal);flex-direction:column;gap:30px;padding:30px 24px;display:flex;position:absolute;top:0;right:0;transform:translate(100%)}.mobile-drawer.open .mobile-drawer-content{transform:translate(0)}.drawer-header{justify-content:space-between;align-items:center;display:flex}.close-btn{color:var(--text-primary)}.mobile-links{flex-direction:column;gap:16px;display:flex}.mobile-link-item{color:var(--text-secondary);text-align:left;border-bottom:1px solid var(--border-color);width:100%;padding:10px 0;font-size:1.1rem;font-weight:500}.mobile-link-item:hover,.mobile-link-item.active{color:var(--accent-teal)}.mobile-drawer-auth{margin-top:30px}.mobile-user-profile{flex-direction:column;gap:16px;display:flex}.mobile-user-profile .user-details{color:var(--text-primary);align-items:center;gap:8px;font-weight:500;display:flex}.w-full{width:100%}.modal-overlay{z-index:2000;-webkit-backdrop-filter:blur(8px);background:#000000e0;justify-content:center;align-items:center;width:100vw;height:100vh;padding:20px;animation:.25s ease-out overlayFadeIn;display:flex;position:fixed;top:0;left:0}@keyframes overlayFadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:var(--bg-secondary);border:1px solid var(--border-color);scrollbar-width:thin;scrollbar-color:#06b6d433 transparent;border-radius:22px;width:100%;max-width:430px;max-height:90vh;padding:36px 36px 28px;animation:.35s cubic-bezier(.16,1,.3,1) modalScaleUp;position:relative;overflow:hidden auto;box-shadow:inset 0 0 0 1px #ffffff03,0 32px 64px -12px #0006,0 0 60px -20px #06b6d426}.modal-content::-webkit-scrollbar{width:4px}.modal-content::-webkit-scrollbar-track{background:0 0}.modal-content::-webkit-scrollbar-thumb{background:#40e0d033;border-radius:2px}.modal-content:before,.modal-content:after{display:none}.modal-close{color:#64748b;z-index:10;cursor:pointer;background:#ffffff0d;border:1px solid #ffffff14;border-radius:10px;justify-content:center;align-items:center;padding:7px;transition:all .2s;display:flex;position:absolute;top:16px;right:16px}.modal-close:hover{color:#f1f5f9;background:#ffffff1a;border-color:#ffffff26;transform:rotate(90deg)}.modal-header{text-align:center;z-index:1;margin-bottom:22px;position:relative}.modal-icon{color:var(--accent-teal);filter:drop-shadow(0 0 12px #40e0d080);margin-bottom:14px}.modal-header h3{font-family:var(--font-heading);color:var(--text-primary);letter-spacing:-.03em;margin-bottom:8px;font-size:1.7rem;font-weight:800}.modal-header p{color:#64748b;font-size:.9rem;line-height:1.5}.demo-badge-container{justify-content:center;margin-bottom:18px;display:flex}.demo-mode-badge{color:#34d399;border-radius:var(--radius-full);letter-spacing:.01em;background:#40e0d012;border:1px solid #40e0d02e;align-items:center;gap:7px;padding:5px 13px;font-size:.78rem;font-weight:600;display:inline-flex}.error-alert{color:#fca5a5;text-align:center;z-index:1;background:#ef44441a;border:1px solid #ef44444d;border-radius:10px;padding:11px 14px;font-size:.875rem;line-height:1.5;position:relative}.success-alert{color:#6ee7b7;text-align:center;z-index:1;background:#34d39914;border:1px solid #34d39940;border-radius:10px;padding:11px 14px;font-size:.875rem;line-height:1.5;position:relative}.warning-alert{color:#fde68a;text-align:center;background:#f59e0b14;border:1px solid #f59e0b40;border-radius:10px;padding:11px 14px;font-size:.875rem;line-height:1.5}.modal-form{z-index:1;flex-direction:column;gap:16px;display:flex;position:relative}.form-group{flex-direction:column;gap:7px;display:flex}.form-group-header{justify-content:space-between;align-items:center;display:flex}.form-group label{color:var(--text-secondary);font-size:.875rem;font-weight:600}.input-with-icon{align-items:center;display:flex;position:relative}.input-with-icon .input-icon{color:#475569;pointer-events:none;z-index:2;transition:color .2s,filter .2s;position:absolute;left:14px}.input-with-icon .form-input{padding-left:44px!important}.input-with-icon:focus-within .input-icon{color:var(--accent-teal);filter:drop-shadow(0 0 5px #40e0d080)}.form-input{z-index:1;position:relative;background:var(--bg-primary)!important;border:1px solid var(--border-color)!important;color:var(--text-primary)!important;font-size:.925rem!important;font-family:var(--font-body)!important;border-radius:11px!important;width:100%!important;padding:13px 16px!important;transition:all .2s!important}.form-input:hover{border-color:var(--border-color-hover)!important}.form-input:focus{border-color:var(--accent-teal)!important;background:#06b6d40d!important;outline:none!important;box-shadow:0 0 0 3px #06b6d41f,0 4px 16px #06b6d414!important}.form-input::placeholder{color:#475569!important;font-size:.9rem!important}.form-input option{color:#f1f5f9;background:#1e293b}.select-input{cursor:pointer}.text-area{resize:vertical;min-height:80px;line-height:1.5!important}.forgot-password-link{color:#f87171;cursor:pointer;background:0 0;border:none;padding:0;font-size:.82rem;font-weight:600;transition:all .2s}.forgot-password-link:hover{color:#fca5a5;text-decoration:underline}.auth-divider{text-align:center;color:var(--text-muted);align-items:center;gap:10px;margin:4px 0;font-size:.8rem;font-weight:500;display:flex}.auth-divider:before,.auth-divider:after{content:"";background:var(--border-color);flex:1;height:1px}.social-login-grid{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.btn-social{background:var(--bg-primary);border:1px solid var(--border-color);height:48px;color:var(--text-primary);cursor:pointer;border-radius:12px;justify-content:center;align-items:center;transition:all .22s cubic-bezier(.4,0,.2,1);display:flex;position:relative;overflow:hidden}.btn-social:before{content:"";opacity:0;border-radius:inherit;transition:opacity .22s;position:absolute;inset:0}.btn-social:hover{transform:translateY(-2px)}.btn-social:hover:before{opacity:1}.btn-social:active{transform:translateY(0)scale(.98)}.btn-social.google:hover{background:#4285f414;border-color:#4285f480;box-shadow:0 6px 20px -6px #ea433580}.btn-social.facebook:hover{background:#1877f214;border-color:#1877f280;box-shadow:0 6px 20px -6px #1877f280}.btn-social.github:hover{background:#ffffff14;border-color:#c8c8c866;box-shadow:0 6px 20px -6px #c8c8c84d}.btn-social svg{width:22px;height:22px;transition:transform .2s}.btn-social:hover svg{transform:scale(1.1)}.btn-back-link{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;align-items:center;gap:6px;padding:0;font-size:.875rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-back-link:hover{color:var(--accent-teal);transform:translate(-3px)}.auth-modal-switch{text-align:center;color:#64748b;font-size:.875rem}.auth-modal-switch button,.text-teal{cursor:pointer;background:0 0;border:none;padding:0;font-weight:600;transition:all .2s;color:var(--accent-teal)!important}.auth-modal-switch button:hover,.text-teal:hover{text-decoration:underline;color:#6ee7b7!important}.auth-footer-note{color:var(--text-muted);text-align:center;border-top:1px solid var(--border-color);margin-top:4px;padding-top:12px;font-size:.78rem;line-height:1.5}.form-row-2{grid-template-columns:1fr 1fr;gap:12px;display:grid}#recaptcha-container{justify-content:center;margin:10px auto;display:flex}.btn-primary:active{transform:scale(.98)}@keyframes modalScaleUp{0%{opacity:0;transform:scale(.94)translateY(16px)}to{opacity:1;transform:scale(1)translateY(0)}}@media (width<=1024px){.topbar{display:none}.header-wrapper.scrolled{transform:translateY(0)}.navbar{height:60px}.nav-links,.auth-action{display:none}.mobile-toggle{display:block}}@media (width>=1025px) and (width<=1220px){.nav-link-item{padding:8px 7px;font-size:.82rem}.nav-controls{gap:8px;margin-left:8px;padding-left:10px}.btn-login-nav{padding:8px 14px!important}}@media (width<=480px){.modal-content{border-radius:18px;max-height:95vh;padding:28px 22px 22px}.modal-header h3{font-size:1.45rem}.form-row-2{grid-template-columns:1fr}.social-login-grid{gap:8px}}.btn-upload-nav{font-size:.85rem}.upload-status-success{color:#6ee7b7;text-align:center;background:#34d39914;border:1px solid #34d39933;border-radius:10px;padding:10px 14px;font-size:.875rem}.upload-status-error{color:#fca5a5;text-align:center;background:#ef444414;border:1px solid #ef444440;border-radius:10px;padding:10px 14px;font-size:.875rem}.mt-4{margin-top:1rem}.mt-3{margin-top:.75rem}.mt-2{margin-top:.5rem}.mb-3{margin-bottom:.75rem}.mb-2{margin-bottom:.5rem}.ml-2{margin-left:.5rem}.ml-3{margin-left:.75rem}.mr-3{margin-right:.75rem}.text-center{text-align:center}.text-xs{font-size:.75rem}.text-sm{font-size:.875rem}.font-semibold{font-weight:600}.hover\:underline:hover{text-decoration:underline}.animate-pulse{animation:2s ease-in-out infinite iconPulse}@keyframes iconPulse{0%,to{opacity:1}50%{opacity:.7}}.nav-controls{border-left:1px solid #ffffff14;align-items:center;gap:12px;margin-left:12px;padding-left:16px;display:flex}:root.light-theme .nav-controls{border-left-color:#00000014}.control-btn{border-radius:var(--radius-sm);background:var(--bg-secondary);border:1px solid var(--border-color);width:36px;height:36px;color:var(--text-secondary);transition:all var(--transition-fast);cursor:pointer;justify-content:center;align-items:center;display:inline-flex}.control-btn:hover{background:var(--bg-tertiary);border-color:var(--border-color-hover);color:var(--text-primary)}:root.light-theme .control-btn{background:#00000005;border-color:#0000000f}:root.light-theme .control-btn:hover{color:var(--text-primary);background:#0000000a;border-color:#0000001a}.lang-selector-container{position:relative}.lang-btn{gap:6px;width:auto;padding:0 10px}.lang-code-capsule{font-family:var(--font-heading);letter-spacing:.02em;color:var(--text-primary);font-size:.75rem;font-weight:700}.lang-dropdown-menu{z-index:150;flex-direction:column;gap:2px;width:130px;margin-top:8px;padding:6px;display:flex;position:absolute;top:100%;right:0;border-radius:var(--radius-sm)!important}.lang-option-btn{color:var(--text-secondary);text-align:left;width:100%;transition:all var(--transition-fast);border-radius:6px;align-items:center;padding:8px 12px;font-size:.85rem;font-weight:500;display:flex}.lang-option-btn:hover{color:var(--text-primary);background:#ffffff08}.lang-option-btn.active{color:var(--accent-teal);background:#06b6d41a;font-weight:600}:root.light-theme .lang-option-btn:hover{background:#00000008}:root.light-theme .lang-option-btn.active{background:#06b6d414}.mobile-controls-row{border-top:1px solid #ffffff0d;border-bottom:1px solid #ffffff0d;flex-direction:column;gap:12px;margin:16px 0 8px;padding:16px 0;display:flex}:root.light-theme .mobile-controls-row{border-top-color:#0000000d;border-bottom-color:#0000000d}.mobile-control-btn{border-radius:var(--radius-sm);color:var(--text-secondary);background:#ffffff05;border:1px solid #ffffff0f;align-items:center;gap:10px;padding:10px 14px;font-size:.9rem;font-weight:600;display:flex}.mobile-lang-options{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.mobile-lang-btn{border-radius:var(--radius-sm);height:38px;color:var(--text-secondary);background:#ffffff06;border:1px solid #ffffff0f;justify-content:center;align-items:center;font-size:.85rem;font-weight:700;display:flex}.mobile-lang-btn.active{border-color:var(--accent-teal);color:var(--accent-teal);background:#06b6d41a}@media (width<=1024px){.nav-controls{display:none}}:root:not(.light-theme) .navbar{background:#0d1320e0;border-bottom-color:#ffffff14;box-shadow:0 10px 30px #0000003d}:root:not(.light-theme) .header-wrapper.scrolled .navbar{background:#0d1320f5;border-bottom-color:#ffffff1a}:root:not(.light-theme) .topbar{background-color:#05070c}:root:not(.light-theme) .nav-link-item:hover,:root:not(.light-theme) .nav-link-item.active{background:#2dd4bf1a!important}.footer{background-color:var(--bg-secondary);color:var(--text-primary);border-top:1px solid var(--border-color);font-size:.95rem}.footer-top{padding:80px 0 50px}.footer-grid{grid-template-columns:1.5fr .8fr 1fr 1.2fr;gap:40px;display:grid}.footer-about{flex-direction:column;gap:20px;display:flex}.footer-logo{font-family:var(--font-heading);align-items:center;gap:4px;font-size:1.8rem;font-weight:800;display:flex}.footer-desc{color:var(--text-secondary);font-size:.9rem;line-height:1.6}.footer-contact{color:var(--text-secondary);flex-direction:column;gap:10px;font-size:.85rem;display:flex}.footer-contact .contact-item{align-items:center;gap:8px;display:flex}.social-links{gap:12px;margin-top:10px;display:flex}.social-icon{border-radius:var(--radius-sm);background:var(--bg-tertiary);border:1px solid var(--border-color);width:36px;height:36px;color:var(--text-secondary);transition:var(--transition-fast);justify-content:center;align-items:center;display:flex}.social-icon:hover{background:var(--accent-teal);color:#fff;border-color:var(--accent-teal);transform:translateY(-3px);box-shadow:0 4px 12px #40e0d04d}.footer-links h4,.footer-newsletter h4{margin-bottom:24px;padding-bottom:10px;font-size:1.15rem;font-weight:600;position:relative}.footer-links h4:after,.footer-newsletter h4:after{content:"";background-color:var(--accent-teal);border-radius:var(--radius-full);width:40px;height:2px;position:absolute;bottom:0;left:0}.footer-links ul{flex-direction:column;gap:12px;list-style:none;display:flex}.footer-links ul button,.footer-links ul a{color:var(--text-secondary);transition:var(--transition-fast);text-align:left;font-size:.9rem}.footer-links ul button:hover,.footer-links ul a:hover{color:var(--accent-teal);transform:translate(4px)}.donate-desc{color:var(--text-secondary);margin-bottom:16px;font-size:.85rem;line-height:1.5}.donate-list{flex-direction:column;display:flex;gap:12px!important}.donate-item{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-sm);flex-direction:column;gap:4px;padding:8px 12px;font-size:.8rem;display:flex}.bank-name{color:var(--text-primary);font-weight:600}.bank-number{color:var(--accent-teal);font-family:monospace;font-size:.95rem;font-weight:600}.bank-owner{color:var(--text-secondary);font-size:.75rem;font-style:italic}.footer-newsletter{flex-direction:column;gap:16px;display:flex}.newsletter-desc{color:var(--text-secondary);font-size:.85rem;line-height:1.5}.newsletter-form{margin-top:10px;position:relative}.input-group{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:var(--transition-fast);padding:4px;display:flex}.input-group:focus-within{border-color:var(--accent-teal);box-shadow:0 0 0 2px #40e0d01a}.input-group input{color:var(--text-primary);background:0 0;border:none;outline:none;flex:1;padding:10px 14px;font-size:.85rem}.input-group input::placeholder{color:var(--text-muted)}.btn-send{background:var(--accent-teal);color:#fff;border-radius:var(--radius-md);width:36px;height:36px;transition:var(--transition-fast);justify-content:center;align-items:center;display:flex}.btn-send:hover{background:var(--accent-teal-hover);transform:scale(1.03)}.status-msg{border-radius:var(--radius-sm);align-items:center;gap:6px;margin-top:8px;padding:6px 12px;font-size:.8rem;display:flex}.status-msg.loading{background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color)}.status-msg.success{color:#34d399;background:#10b9811a;border:1px solid #10b98133}.status-msg.error{color:#f87171;background:#ef44441a;border:1px solid #ef444433}.footer-bottom{background:var(--bg-primary);border-top:1px solid var(--border-color);color:var(--text-muted);padding:24px 0;font-size:.85rem}.footer-bottom-content{justify-content:space-between;align-items:center;display:flex}.author-link{color:var(--accent-teal);font-weight:500}.author-link:hover{text-decoration:underline}@media (width<=1024px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}@media (width<=768px){.footer-top{padding:60px 0 40px}.footer-grid{grid-template-columns:1fr;gap:30px}.footer-bottom-content{text-align:center;flex-direction:column;gap:12px}}.consult-form-container{box-shadow:var(--shadow-lg);box-sizing:border-box;border-radius:20px;width:100%;padding:40px;position:relative;overflow:hidden}.consult-form-container .bubble-watermark{pointer-events:none;z-index:1;width:320px;height:320px;position:absolute;top:10%;right:-5%}.consult-form-container.theme-dark{color:#fff;background:#143d35;border:1px solid #ffffff14}.consult-form-container.theme-dark .bubble-watermark{color:#ffffff09}.consult-form-container.theme-dark .consult-title{color:#fff;border-bottom:2px dashed #fff3}.consult-form-container.theme-dark .consult-subtitle{color:#fffc}.consult-form-container.theme-light{color:#111827;background:#fff;border:1px solid #11182714}.consult-form-container.theme-light .bubble-watermark{color:#0f766e0a}.consult-form-container.theme-light .consult-title{color:#111827;border-bottom:2px dashed #11182726}.consult-form-container.theme-light .consult-subtitle{color:#4b5563}.close-modal-btn{color:#9ca3af;cursor:pointer;z-index:10;background:0 0;border:none;padding:5px;font-size:28px;font-weight:500;line-height:1;position:absolute;top:15px;right:20px}.close-modal-btn:hover{color:#374151}.consult-title{z-index:2;margin-bottom:12px;padding-bottom:12px;font-size:1.8rem;font-weight:800;display:inline-block;position:relative}.consult-subtitle{z-index:2;max-width:680px;margin-bottom:35px;font-size:.95rem;line-height:1.5;position:relative}.consult-madlibs-form{z-index:2;position:relative}.madlibs-sentence{margin-bottom:30px;font-size:clamp(1.1rem,2.2vw,1.45rem);font-weight:600;line-height:2.2}.madlibs-sentence span{white-space:nowrap;margin-right:6px;display:inline-block}.input-wrapper{vertical-align:middle;margin:0 4px;display:inline-block;position:relative}.madlibs-input,.madlibs-select{font-family:var(--font-body);font-size:inherit;box-sizing:border-box;text-align:left;color:inherit;background:0 0;border:none;border-bottom:2px solid;border-radius:0;outline:none;padding:0 8px 2px;font-weight:700;transition:all .2s}.madlibs-input{width:200px}.madlibs-input.phone-width{width:160px}.madlibs-input.email-width{width:240px}.madlibs-select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='currentColor' stroke-width='2'><path d='m2 4 4 4 4-4'/></svg>");background-position:right 6px center;background-repeat:no-repeat;width:320px;padding-right:20px}.consult-form-container.theme-dark .madlibs-input::placeholder{color:#ffffff59}.consult-form-container.theme-light .madlibs-input::placeholder{color:#11182759}.madlibs-input:focus,.madlibs-select:focus{border-bottom-width:3px;padding-bottom:1px}.madlibs-select option{color:#111827;background:#fff;font-size:.95rem;font-weight:400}.consult-form-container.theme-dark .madlibs-select option{color:#fff;background:#143d35}.consult-error-msg{color:#fca5a5;background:#ef444426;border:1px solid #ef444433;border-radius:6px;margin-bottom:20px;padding:10px 16px;font-size:.9rem;font-weight:600}.theme-light .consult-error-msg{color:#dc2626;background:#dc26260d}.consult-form-actions{flex-wrap:wrap;align-items:center;gap:20px;margin-top:15px;display:flex}.btn-consult-submit{color:#fff;cursor:pointer;background:#c83c37;border:none;border-radius:6px;align-items:center;gap:10px;padding:12px 28px;font-size:.95rem;font-weight:700;transition:all .25s;display:inline-flex;box-shadow:0 4px 12px #c83c3740}.btn-consult-submit:hover:not(:disabled){background:#b5312c;transform:translateY(-2px);box-shadow:0 6px 18px #c83c3759}.btn-consult-submit:disabled{opacity:.6;cursor:not-allowed}.turnstile-mock{color:#374151;background:#fff;border:1px solid #d1d5db;border-radius:4px;align-items:center;height:44px;padding:8px 14px;display:flex;box-shadow:0 1px 3px #0000000d}.turnstile-check{justify-content:center;align-items:center;width:22px;height:22px;margin-right:8px;display:flex;position:relative}.turnstile-spinner{width:100%;height:100%;animation:1.5s linear infinite rotate-turnstile;display:none;position:absolute}@keyframes rotate-turnstile{to{transform:rotate(360deg)}}.turnstile-success-check{color:#059669;background:#ecfdf5;border:1px solid #10b981;border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;font-size:16px;font-weight:900;display:flex}.turnstile-text-column{flex-direction:column;margin-right:14px;line-height:1;display:flex}.ts-success-text{color:#111827;margin-bottom:2px;font-size:.72rem;font-weight:700}.ts-brand{letter-spacing:.5px;color:#d97706;font-size:.55rem;font-weight:900}.turnstile-links{color:#6b7280;border-left:1px solid #e5e7eb;align-items:center;gap:4px;height:100%;padding-left:8px;font-size:.6rem;display:flex}.turnstile-links a{color:inherit}.turnstile-links a:hover{text-decoration:underline}.consult-success-panel{text-align:center;padding:30px 10px}.consult-success-panel .success-icon{color:#34d399;margin:0 auto 20px;animation:.3s ease-out scaleUp}.consult-success-panel h3{margin-bottom:10px;font-size:1.5rem}.consult-success-panel p{opacity:.9;margin-bottom:25px;font-size:.95rem}@keyframes scaleUp{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.consult-tail-triangle{z-index:2;border:15px solid #0000;border-color:#143d35 #0000 #0000 #143d35;width:0;height:0;margin-bottom:-30px;position:absolute;bottom:0;left:45px}.desktop-break{display:inline}@media (width<=992px){.madlibs-sentence{line-height:2}.madlibs-input,.madlibs-select{font-size:1.15rem}.madlibs-select{width:280px}}@media (width<=768px){.consult-form-container{border-radius:16px;padding:24px}.consult-title{font-size:1.5rem}.madlibs-sentence{font-size:1rem;line-height:2.3}.desktop-break{display:none}.madlibs-input,.madlibs-select{padding:0 4px;font-size:1rem}.madlibs-input{width:140px}.madlibs-input.phone-width{width:120px}.madlibs-input.email-width{width:160px}.madlibs-select{width:200px}.consult-form-actions{flex-direction:column;align-items:stretch}.btn-consult-submit,.turnstile-mock{justify-content:center}.consult-tail-triangle{left:25px}}.floating-actions{z-index:900;gap:10px;display:grid;position:fixed;bottom:22px;right:18px}.floating-action{border:1px solid var(--border-color);background:var(--bg-secondary);width:46px;height:46px;color:var(--text-primary);box-shadow:var(--shadow-lg);border-radius:999px;justify-content:center;align-items:center;font-size:.76rem;font-weight:900;display:inline-flex}.floating-action:hover{transform:translateY(-2px)}.floating-action.zalo{color:#fff;background:#0068ff}.floating-action.messenger{color:#fff;background:linear-gradient(135deg,#00b2ff,#7b2cff)}.floating-action.telegram{background:var(--accent-teal);color:#fff}.floating-action.back-top{background:var(--text-primary);color:var(--bg-secondary)}.consultation-ribbon{z-index:899;writing-mode:vertical-rl;text-orientation:mixed;color:#fff;box-shadow:var(--shadow-lg);letter-spacing:0;cursor:pointer;text-align:center;background:#e54843;border:none;border-radius:10px 0 0 10px;outline:none;padding:16px 10px;font-family:inherit;font-size:.9rem;font-weight:900;position:fixed;top:50%;right:0;transform:translateY(-50%)}.consultation-ribbon:hover{color:#fff;background:#d93b36}.consultation-modal-overlay{-webkit-backdrop-filter:blur(8px);z-index:10000;box-sizing:border-box;background:#11182773;justify-content:center;align-items:center;width:100vw;height:100vh;padding:20px;animation:.25s ease-out modalFadeIn;display:flex;position:fixed;top:0;left:0}.consultation-modal-content{background:#fff;border-radius:20px;width:100%;max-width:800px;animation:.3s cubic-bezier(.34,1.56,.64,1) modalScaleIn;position:relative;overflow:hidden;box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a}@keyframes modalFadeIn{0%{opacity:0}to{opacity:1}}@keyframes modalScaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@media (width<=768px){.floating-actions{bottom:14px;right:12px}.consultation-ribbon{display:none}}.home-page{background:var(--bg-primary)}.enterprise-hero,.page-hero{background:radial-gradient(circle at 82% 8%,#2dd4bf24,#0000 26%),linear-gradient(120deg,#080d19 0%,#0b1020 58%,#0d2022 100%);padding:145px 0 86px;position:relative;overflow:hidden}:root:not(.light-theme) .enterprise-hero,:root:not(.light-theme) .page-hero{background:linear-gradient(120deg, #2dd4bf1f, transparent 34%), linear-gradient(180deg, #090d16 0%, var(--bg-primary) 100%)}.enterprise-hero-grid,.page-hero-grid,.operating-grid,.dashboard-grid{grid-template-columns:minmax(0,1fr) minmax(360px,.82fr);align-items:center;gap:72px;display:grid}.enterprise-copy h1,.page-hero h1{color:#fff;letter-spacing:-.045em;max-width:740px;margin-top:22px;font-size:clamp(3.1rem,5.7vw,5.7rem);line-height:1.04}.page-hero h1{font-size:clamp(2.6rem,5vw,5rem)}.enterprise-copy p,.page-hero p,.operating-panel p,.dashboard-card p{color:#e2e8f0d1;max-width:660px;margin-top:24px;font-size:1.02rem;line-height:1.75}.hero-badge,.section-subtitle{border-radius:var(--radius-sm);color:var(--accent-teal);letter-spacing:.08em;text-transform:uppercase;background:#0f766e12;border:1px solid #0f766e2e;align-items:center;gap:8px;padding:8px 12px;font-size:.78rem;font-weight:850;display:inline-flex}.enterprise-hero .hero-badge,.page-hero .hero-badge{color:#dbeafe;background:#ffffff0a;border-color:#ffffff24}.section-subtitle{background:0 0;border:0;padding:0}.hero-buttons,.course-actions{flex-wrap:wrap;gap:12px;margin-top:32px;display:flex}.trust-row{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}.trust-row span{color:#e2e8f0db;align-items:center;gap:7px;font-size:.92rem;font-weight:700;display:inline-flex}.trust-row svg{color:var(--accent-emerald)}.hero-video-panel{background:#ffffff09;border:1px solid #ffffff1a;border-radius:22px;justify-self:end;max-width:560px;padding:14px;box-shadow:0 28px 70px #00000042}.hero-video-frame{border-radius:16px;position:relative;overflow:hidden}.hero-video-frame img{aspect-ratio:16/9;object-fit:cover;filter:saturate(.92)brightness(.72);width:100%}.hero-video-frame button{color:#071014;background:#55c7e8;border-radius:999px;justify-content:center;align-items:center;width:74px;height:74px;padding-left:5px;display:inline-flex;position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%);box-shadow:0 18px 45px #55c7e859}.hero-video-caption{color:#e2e8f0c7;text-align:center;padding:14px 0 3px;font-weight:800}.home-stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:56px;display:grid}.home-stats div{border:1px solid var(--border-color);background:var(--bg-secondary);box-shadow:var(--shadow-sm);border-radius:8px;padding:22px}.home-stats strong{color:var(--text-primary);font-size:2rem;line-height:1;display:block}.home-stats span{color:var(--text-secondary);margin-top:8px;font-weight:750;display:block}.section-title-split{text-align:left;grid-template-columns:minmax(0,1fr) minmax(280px,520px);align-items:end;gap:34px;display:grid}.section-title-split p{max-width:none;margin:0}.product-grid,.principles-grid,.course-catalog-grid,.exam-room-grid,.midterm-room-grid{gap:22px;display:grid}.product-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.product-card,.principle-card,.course-catalog-card,.exam-room-card,.midterm-room-card,.course-console,.exam-overview-panel,.dashboard-card,.metric-stack>div,.flow-step,.cta-panel{border:1px solid var(--border-color);background:var(--bg-secondary);box-shadow:var(--shadow-sm);border-radius:8px}.product-card{min-height:310px;transition:var(--transition-normal);padding:28px}.product-card:hover,.principle-card:hover,.course-catalog-card:hover,.exam-room-card:hover,.midterm-room-card:hover{box-shadow:var(--shadow-lg);border-color:#0f766e4d;transform:translateY(-5px)}.product-icon{width:48px;height:48px;color:var(--accent-teal);background:#0f766e1a;border-radius:8px;justify-content:center;align-items:center;display:inline-flex}.product-card h3,.principle-card h3,.flow-step h3,.course-catalog-card h3,.exam-room-card h3,.midterm-room-card h3{color:var(--text-primary);margin-top:20px;font-size:1.22rem}.product-card p,.principle-card p,.flow-step p,.course-catalog-card p,.exam-room-card p,.midterm-room-card p{color:var(--text-secondary);margin-top:10px;font-size:.94rem;line-height:1.62}.product-card>span,.exam-room-action,.course-card-footer button,.course-card-footer a{color:var(--accent-teal);align-items:center;gap:7px;margin-top:28px;font-weight:850;display:inline-flex}.operating-model,.midterm-room-section,.course-dashboard-section{background:var(--bg-secondary)}.operating-panel,.dashboard-card{padding:36px}.operating-panel h2,.dashboard-card h2,.cta-panel h2{color:var(--text-primary);letter-spacing:-.04em;margin-top:14px;font-size:clamp(2rem,4vw,3.4rem);line-height:1.02}.section-link{color:var(--accent-teal);align-items:center;gap:8px;font-weight:850;display:inline-flex}.blog-preview-section{background:var(--bg-primary)}.news-grid{grid-template-columns:minmax(0,1fr) minmax(360px,.85fr);gap:24px;display:grid}.news-feature,.news-item,.headline-story,.article-row{border:1px solid var(--border-color);background:var(--bg-secondary);box-shadow:var(--shadow-sm);border-radius:8px;overflow:hidden}.news-feature img,.headline-story img{aspect-ratio:16/9;object-fit:cover;width:100%}.news-feature div,.headline-story div{padding:24px}.news-feature span,.news-item span,.headline-story span,.article-row span{color:var(--accent-teal);text-transform:uppercase;font-size:.78rem;font-weight:850}.news-feature h3,.headline-story h2{color:var(--text-primary);margin-top:10px;font-size:clamp(1.7rem,3vw,2.45rem);line-height:1.14}.news-feature p,.news-item p,.headline-story p,.article-row p{color:var(--text-secondary);margin-top:10px;line-height:1.65}.news-feature a{color:var(--accent-teal);align-items:center;gap:8px;margin-top:18px;font-weight:850;display:inline-flex}.news-list,.article-list{gap:14px;display:grid}.news-item,.article-row{grid-template-columns:138px 1fr;gap:16px;padding:12px;display:grid}.news-item img,.article-row img{object-fit:cover;border-radius:8px;width:100%;height:112px}.news-item h3,.article-row h3{color:var(--text-primary);margin-top:5px;font-size:1.02rem;line-height:1.35}.blog-hero{background:linear-gradient(180deg, #fff 0%, var(--bg-primary) 100%);padding:140px 0 54px}.blog-hero h1{color:var(--text-primary);margin-top:12px;font-size:clamp(2.8rem,5vw,5rem);line-height:1}.blog-hero p{max-width:720px;color:var(--text-secondary);margin-top:14px;line-height:1.7}.blog-search{border:1px solid var(--border-color);background:var(--bg-secondary);border-radius:8px;grid-template-columns:auto 1fr;align-items:center;gap:12px;max-width:640px;margin-top:26px;padding:14px 16px;display:grid}.blog-search svg{color:var(--accent-teal)}.blog-search input{color:var(--text-primary);font:inherit;background:0 0;border:0;outline:0}.newspaper-layout{grid-template-columns:minmax(0,1fr) minmax(360px,.85fr);gap:26px;display:grid}.flow-steps{gap:14px;display:grid}.flow-step{padding:22px}.flow-step strong{color:var(--accent-teal);font-size:.9rem}.principles-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.principle-card{padding:26px}.principle-card svg{color:var(--accent-teal)}.cta-panel{background:linear-gradient(135deg, #0f766e14, transparent), var(--bg-secondary);justify-content:space-between;align-items:center;gap:28px;padding:34px;display:flex}.page-shell{min-height:100vh}.course-console{padding:18px}.console-screen{background:linear-gradient(135deg, #0f766ee0, #2563ebdb), var(--bg-tertiary);color:#fff;border-radius:8px;place-items:center;gap:10px;min-height:260px;font-weight:900;display:grid}.console-screen svg{background:#ffffff2e;border-radius:999px;width:68px;height:68px;padding:18px}.console-list{gap:10px;margin-top:18px;display:grid}.console-list span,.course-meta-row span{color:var(--text-secondary);align-items:center;gap:7px;font-size:.9rem;font-weight:750;display:inline-flex}.course-catalog-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.course-enroll-layout{grid-template-columns:minmax(0,1fr) 360px;align-items:start;gap:24px;display:grid}.course-catalog-card{overflow:hidden}.course-cover{aspect-ratio:16/10;background:var(--bg-tertiary);position:relative;overflow:hidden}.course-cover img,.midterm-room-card img{object-fit:cover;width:100%;height:100%}.course-cover span{color:#fff;background:#111827c7;border-radius:999px;padding:6px 10px;font-size:.78rem;font-weight:850;position:absolute;top:14px;left:14px}.locked-badge{color:var(--text-primary);background:#ffffffeb;border-radius:999px;align-items:center;gap:6px;padding:6px 10px;font-size:.76rem;font-weight:850;display:inline-flex;position:absolute;bottom:14px;right:14px}.course-catalog-body{padding:22px}.course-meta-row{flex-wrap:wrap;gap:12px;margin-top:18px;display:flex}.progress-track{background:#0f766e1f;border-radius:999px;height:8px;margin-top:18px;overflow:hidden}.progress-track span{border-radius:inherit;background:linear-gradient(90deg, var(--accent-teal), var(--accent-blue));height:100%;display:block}.course-card-footer{justify-content:space-between;align-items:center;gap:12px;margin-top:16px;display:flex}.course-card-footer small{color:var(--text-secondary);font-weight:800}.course-card-footer button,.course-card-footer a{margin:0}.enroll-panel{background:var(--bg-secondary);border-radius:8px;padding:24px;position:sticky;top:96px}.enroll-panel h2{color:var(--text-primary);margin-top:12px;font-size:2rem}.enroll-panel p{color:var(--text-secondary);margin-top:8px;line-height:1.6}.enroll-form{gap:12px;margin-top:18px;display:grid}.enroll-form .btn{width:100%}.enroll-benefits{gap:10px;margin-top:18px;display:grid}.enroll-benefits span{color:var(--text-secondary);gap:8px;font-size:.88rem;font-weight:700;display:flex}.enroll-benefits svg{color:var(--accent-emerald);flex-shrink:0}.dark-card{color:#fff;background:#101827}.dark-card h2,.dark-card p{color:#fff}.dark-card p{opacity:.78}.metric-stack{gap:14px;display:grid}.metric-stack>div{grid-template-columns:auto 1fr;column-gap:14px;padding:20px;display:grid}.metric-stack svg{color:var(--accent-teal);grid-row:span 2}.metric-stack strong{color:var(--text-primary);font-size:1.8rem;line-height:1}.metric-stack span{color:var(--text-secondary);font-weight:750}.exam-overview-panel{background:var(--border-color);grid-template-columns:repeat(3,1fr);gap:1px;display:grid;overflow:hidden}.exam-overview-panel>div{background:var(--bg-secondary);text-align:center;place-items:center;padding:28px 18px;display:grid}.exam-overview-panel svg{color:var(--accent-teal)}.exam-overview-panel strong{color:var(--text-primary);margin-top:12px;font-size:2rem;line-height:1}.exam-overview-panel span{color:var(--text-secondary);margin-top:6px;font-size:.84rem;font-weight:750}.exam-room-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.exam-room-card{min-height:250px;transition:var(--transition-normal);flex-direction:column;justify-content:space-between;padding:24px;display:flex}.exam-room-index{width:42px;height:42px;color:var(--accent-teal);background:#0f766e1a;border-radius:8px;place-items:center;font-weight:900;display:inline-grid}.midterm-room-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.midterm-teacher-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.midterm-room-section{background:#080d18}.midterm-room-section .section-title h2{color:#fff}.midterm-room-section .section-title p{color:#e2e8f0b8}.midterm-room-card{transition:var(--transition-normal);overflow:hidden}.teacher-exam-card{background:#0d111b;border-color:#ffffff14;box-shadow:0 18px 44px #0000003d}.teacher-cover{aspect-ratio:16/9;position:relative;overflow:hidden}.teacher-cover img{object-fit:cover;width:100%;height:100%}.teacher-cover span{color:#fff;background:#111827d1;border-radius:999px;padding:7px 13px;font-size:.82rem;font-weight:850;position:absolute;bottom:16px;left:16px}.midterm-room-card>img{aspect-ratio:16/11}.midterm-room-card div{padding:18px}.midterm-room-card span{color:var(--accent-teal);align-items:center;gap:6px;font-size:.78rem;font-weight:850;display:inline-flex}.teacher-exam-card h3{color:#fff;font-size:1.15rem}.teacher-exam-card p{color:#cbd5e1c7}.teacher-card-action{border:1px solid #ffffff1f;border-radius:999px;justify-content:center;width:100%;margin-top:22px;padding:13px 16px;color:#fff!important}.teacher-card-action:hover{background:#ffffff0f}.forum-blog-page{background:var(--bg-primary);min-height:100vh}.forum-blog-hero{background:var(--bg-primary);padding:110px 0 60px}.forum-blog-hero .container{max-width:1380px;margin:0 auto;padding:0 24px}.forum-blog-grid{grid-template-columns:280px minmax(0,1fr);align-items:start;gap:36px;display:grid}:root.light-theme .article-toc{background:#f8fafc;border-color:#e2e8f0}.article-toc h3.toc-title{color:var(--text-primary);border-bottom:1px solid var(--border-color);letter-spacing:-.01em;margin-bottom:16px;padding-bottom:10px;font-size:1.1rem;font-weight:800}.toc-list li a{color:var(--text-secondary);border-left:3px solid #0000;padding:6px 0 6px 14px;font-size:.9rem;font-weight:500;line-height:1.5;text-decoration:none;transition:all .2s;display:block;border-radius:0!important}:root.light-theme .toc-list li a{color:#64748b}.toc-list li a:hover{color:var(--accent-teal);background:0 0;border-left-color:#cbd5e1}.toc-list li a.active{font-weight:750;color:var(--accent-teal)!important;border-left-color:var(--accent-teal)!important;background:0 0!important}:root.light-theme .toc-list li a.active{color:#0f766e!important;background:0 0!important;border-left-color:#0f766e!important}.toc-footer{border-top:1px solid var(--border-color);color:var(--text-secondary);margin-top:24px;padding-top:16px;font-size:.76rem;font-weight:600}:root.light-theme .forum-blog-page{background-color:#f8fafc}.forum-article{color:#1e293b;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:16px;max-width:960px;padding:44px 52px;font-family:Be Vietnam Pro,Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;box-shadow:0 4px 24px #0000000a}:root.light-theme .forum-article{color:#1e293b;background:#fff;border-color:#e2e8f0}.article-search{border:1px solid #e5e7eb;border-radius:8px;grid-template-columns:auto 1fr;align-items:center;gap:10px;max-width:520px;margin-bottom:26px;padding:12px 14px;display:grid}.article-search input{font:inherit;border:0;outline:0}.forum-article h1.article-title{max-width:880px;color:var(--text-primary);letter-spacing:-.02em;margin:16px 0;font-family:Be Vietnam Pro,Inter,system-ui,sans-serif;font-size:clamp(2rem,3.5vw,2.75rem);font-weight:800;line-height:1.28}:root.light-theme .forum-article h1.article-title{color:#0f172a}.article-byline{color:var(--text-secondary);flex-wrap:wrap;align-items:center;gap:20px;margin-bottom:14px;font-size:.94rem;font-weight:600;display:flex}.article-keywords{color:var(--text-secondary);margin-bottom:16px;font-size:.92rem}.article-meta{flex-wrap:wrap;gap:12px;margin:16px 0 28px;display:flex}.article-meta .category-badge{color:var(--accent-teal);background:#06b6d41f;border:1px solid #06b6d440;border-radius:999px;padding:6px 14px;font-size:.85rem;font-weight:750}.article-section{border-bottom:1px solid var(--border-color);margin-bottom:40px;padding-bottom:32px}.article-section:last-of-type{border-bottom:none}.article-section h2.section-heading{color:var(--text-primary);letter-spacing:-.01em;justify-content:space-between;align-items:center;margin:0 0 22px;font-family:Be Vietnam Pro,Inter,system-ui,sans-serif;font-size:clamp(1.4rem,2.2vw,1.85rem);font-weight:800;display:flex}:root.light-theme .article-section h2.section-heading{color:#0f172a}.section-anchor-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:8px;align-items:center;gap:6px;padding:6px 10px;transition:all .2s;display:inline-flex;position:relative}.section-anchor-btn:hover{color:var(--accent-teal);background:#06b6d414}.copied-tooltip{background:var(--bg-tertiary);color:var(--text-primary);white-space:nowrap;box-shadow:var(--shadow-sm);border:1px solid var(--border-color);border-radius:6px;margin-right:8px;padding:4px 8px;font-size:.78rem;font-weight:700;position:absolute;top:50%;right:100%;transform:translateY(-50%)}.article-paragraph{color:var(--text-primary);white-space:pre-wrap;margin-bottom:16px;font-size:1.05rem;line-height:1.85}:root.light-theme .article-paragraph{color:#334155}.article-paragraph:last-child{margin-bottom:0}.article-list-item{align-items:baseline;gap:10px;margin-top:6px;margin-bottom:6px;margin-left:1.8rem;display:flex}.bullet-dash{color:#0f766e;font-size:1.1rem;font-weight:700}.math-block{text-align:center;justify-content:center;align-items:center;width:100%;font-size:1.14rem;display:flex;box-shadow:none!important;background:0 0!important;border:none!important;border-radius:0!important;margin:16px 0!important;padding:4px 0!important;overflow:visible!important}:root.light-theme .math-block{background:0 0!important;border:none!important}.math-block .katex-display{background:0 0!important;margin:0!important;overflow:visible!important}.article-diagram-figure{text-align:center;margin:24px 0;box-shadow:none!important;background:0 0!important;border:none!important;padding:0!important}.article-diagram-img{max-width:100%;height:auto;box-shadow:none!important;background:0 0!important;border:none!important;border-radius:0!important}.article-diagram-caption{color:#64748b;margin-top:8px;font-size:.9rem;font-style:italic}.math-inline{color:inherit;padding:0 2px;display:inline}.article-diagram-figure{text-align:center;margin:24px 0}.article-diagram-img{border:1px solid #e2e8f0;border-radius:12px;max-width:100%;height:auto;box-shadow:0 4px 14px #0000000a}.article-diagram-caption{color:#64748b;margin-top:8px;font-size:.88rem;font-weight:600}.math-inline{color:inherit;background:0 0;padding:0 2px;display:inline}.article-diagram-figure{text-align:center;background:var(--bg-primary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);border-radius:16px;margin:28px 0;padding:20px;overflow:hidden}.article-diagram-img{width:100%;max-width:760px;height:auto;box-shadow:var(--shadow-md);border-radius:12px;margin:0 auto}.article-diagram-caption{color:var(--accent-teal);letter-spacing:.02em;margin-top:14px;font-size:.9rem;font-weight:750}.article-toc{background:var(--bg-secondary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);border-radius:16px;max-height:calc(100vh - 120px);padding:24px;position:sticky;top:100px;overflow-y:auto}.article-toc h3{color:var(--text-primary);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border-color);margin-bottom:16px;padding-bottom:10px;font-size:1.1rem;font-weight:800}.toc-list{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.toc-list li a{color:var(--text-secondary);border-radius:8px;padding:6px 10px;font-size:.92rem;font-weight:600;line-height:1.4;text-decoration:none;transition:all .2s;display:block}.toc-list li a:hover{color:var(--accent-teal);background:#06b6d414;transform:translate(4px)}.related-posts{gap:14px;margin-top:16px;display:grid}.related-posts a{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);border-radius:12px;padding:16px 20px;font-size:.98rem;font-weight:700;text-decoration:none;transition:all .2s}.related-posts a:hover{border-color:var(--accent-teal);color:var(--accent-teal);transform:translateY(-2px)}@media (width<=1100px){.enterprise-hero-grid,.page-hero-grid,.operating-grid,.dashboard-grid,.section-title-split{grid-template-columns:1fr}.math-stage{min-height:460px}.product-grid,.principles-grid,.course-catalog-grid,.course-enroll-layout .course-catalog-grid,.exam-room-grid,.midterm-room-grid,.midterm-teacher-grid,.news-grid,.newspaper-layout{grid-template-columns:repeat(2,minmax(0,1fr))}.course-enroll-layout{grid-template-columns:1fr}.enroll-panel{position:static}}@media (width<=768px){.enterprise-hero,.page-hero{padding:116px 0 58px}.enterprise-copy h1,.page-hero h1{font-size:2.55rem}.hero-buttons,.cta-panel{flex-direction:column;align-items:stretch}.hero-buttons .btn,.cta-panel .btn{width:100%}.math-stage{min-height:390px}.math-cube{width:132px;height:132px;top:120px}.cube-front{transform:translateZ(66px)}.cube-back{transform:rotateY(180deg)translateZ(66px)}.cube-right{transform:rotateY(90deg)translateZ(66px)}.cube-left{transform:rotateY(-90deg)translateZ(66px)}.cube-top{transform:rotateX(90deg)translateZ(66px)}.cube-bottom{transform:rotateX(-90deg)translateZ(66px)}.stage-card-primary{width:230px;bottom:32px;right:10px}.stage-card-secondary{top:48px;left:0}.product-grid,.principles-grid,.course-catalog-grid,.course-enroll-layout .course-catalog-grid,.exam-room-grid,.midterm-room-grid,.midterm-teacher-grid,.exam-overview-panel,.news-grid,.newspaper-layout,.home-stats,.forum-blog-grid{grid-template-columns:1fr}.article-toc{padding-top:0;position:static}.news-item,.article-row{grid-template-columns:1fr}.news-item img,.article-row img{height:180px}}.enterprise-copy h1{letter-spacing:0;max-width:520px;font-size:6.2rem;line-height:.96}.page-hero h1{letter-spacing:0}.enterprise-copy p{max-width:620px}.consult-red{color:#fff!important;background:#e54843!important;border-color:#e54843!important}.consult-red:hover{background:#d93b36!important;border-color:#d93b36!important}.cta-contact-list{flex-wrap:wrap;gap:10px;margin-top:18px;display:flex}.cta-contact-list a,.enroll-contact-box a{color:var(--accent-teal);align-items:center;gap:8px;font-weight:800;display:inline-flex}.news-item,.headline-story,.article-row{color:inherit}.headline-story strong{color:var(--accent-teal);align-items:center;gap:8px;margin-top:18px;display:inline-flex}.blog-index-section{padding-top:28px}.article-back-link{color:#25643f;align-items:center;gap:8px;margin-bottom:18px;font-weight:850;display:inline-flex}.article-byline{color:#111827;flex-wrap:wrap;gap:18px;margin:22px 0 10px;font-weight:750;display:flex}.article-byline span{align-items:center;gap:7px;display:inline-flex}.article-keywords{margin-top:0;font-style:italic}.article-cover{object-fit:cover;width:min(760px,100%);max-height:460px;display:block}.article-section h2{border-bottom:1px solid #e5e7eb;align-items:center;gap:10px;padding-bottom:12px;display:flex}.related-posts a{color:#111827;border:1px solid #e5e7eb;border-radius:8px;padding:16px;font-weight:850}.course-enroll-layout{grid-template-columns:1fr}.course-enroll-layout .course-catalog-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.enroll-panel{grid-template-columns:minmax(280px,.8fr) minmax(0,1.2fr);gap:28px;margin-top:18px;padding:34px;display:grid;position:static}.enroll-form{grid-template-columns:repeat(2,minmax(0,1fr))}.enroll-form .text-area,.enroll-form .btn{grid-column:1/-1}.enroll-contact-box{border:1px solid var(--border-color);background:var(--bg-primary);border-radius:8px;gap:12px;margin-top:20px;padding:18px;display:grid}.enroll-benefits{grid-column:1/-1;grid-template-columns:repeat(3,minmax(0,1fr))}@media (width<=1100px){.enterprise-copy h1{font-size:5rem}.course-enroll-layout .course-catalog-grid,.enroll-panel,.enroll-benefits{grid-template-columns:1fr}}@media (width<=768px){.enterprise-copy h1{font-size:4rem}.enroll-form{grid-template-columns:1fr}.forum-blog-grid{gap:26px}}.blog-vertical-layout{flex-direction:column;gap:36px;max-width:1000px;margin:0 auto;display:flex}.headline-story-vertical{background:var(--bg-secondary);border:1px solid var(--border-color);box-shadow:var(--shadow-md);color:inherit;border-radius:16px;grid-template-columns:1.35fr 1fr;gap:36px;text-decoration:none;transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s,border-color .3s;display:grid;overflow:hidden}.headline-story-vertical:hover{box-shadow:var(--shadow-xl);border-color:#0f766e4d;transform:translateY(-6px)}.headline-img-wrapper{aspect-ratio:16/10;position:relative;overflow:hidden}.headline-story-vertical img{object-fit:cover;width:100%;height:100%;transition:transform .5s cubic-bezier(.16,1,.3,1)}.headline-story-vertical:hover img{transform:scale(1.04)}.headline-content{flex-direction:column;justify-content:center;padding:36px 36px 36px 0;display:flex}.post-category{color:var(--accent-teal);text-transform:uppercase;letter-spacing:.5px;margin-bottom:12px;font-size:.8rem;font-weight:800;display:inline-block}.headline-content h2{color:var(--text-primary);margin-bottom:16px;font-size:clamp(1.5rem,2.5vw,2.2rem);font-weight:800;line-height:1.25}.headline-content p{color:var(--text-secondary);margin-bottom:24px;font-size:1.02rem;line-height:1.65}.read-more{color:var(--accent-teal);align-items:center;gap:8px;font-size:.95rem;font-weight:800;display:inline-flex}.article-list-vertical{flex-direction:column;gap:24px;display:flex}.article-row-vertical{background:var(--bg-secondary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);color:inherit;border-radius:14px;grid-template-columns:260px 1fr;gap:28px;padding:16px;text-decoration:none;transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s,border-color .3s;display:grid;overflow:hidden}.article-row-vertical:hover{box-shadow:var(--shadow-md);border-color:#0f766e4d;transform:translateY(-4px)}.article-img-wrapper{aspect-ratio:16/10;border-radius:10px;height:100%;overflow:hidden}.article-row-vertical img{object-fit:cover;width:100%;height:100%;transition:transform .5s cubic-bezier(.16,1,.3,1)}.article-row-vertical:hover img{transform:scale(1.04)}.article-content{flex-direction:column;justify-content:center;padding-right:12px;display:flex}.article-content h3{color:var(--text-primary);margin-bottom:10px;font-size:1.3rem;font-weight:800;line-height:1.3}.article-content p{color:var(--text-secondary);margin-bottom:16px;font-size:.95rem;line-height:1.6}.read-more-link{color:var(--accent-teal);align-items:center;gap:6px;font-size:.88rem;font-weight:800;display:inline-flex}@media (width<=900px){.headline-story-vertical{grid-template-columns:1fr}.headline-content{padding:24px}.article-row-vertical{grid-template-columns:200px 1fr;gap:20px;padding:12px}}@media (width<=600px){.article-row-vertical{grid-template-columns:1fr}.article-img-wrapper{aspect-ratio:16/9}}.exam-card{border-radius:var(--radius-md);background:var(--bg-secondary);border:1px solid var(--border-color);transition:var(--transition-normal);flex-direction:column;gap:20px;padding:28px;display:flex}.exam-card:hover{border-color:#2dd4bf40;transform:translateY(-4px);box-shadow:0 20px 40px #0006,0 0 24px #2dd4bf14}.exam-card-header{justify-content:space-between;align-items:center;display:flex}.exam-card-body h3{color:var(--text-primary);margin-bottom:8px;font-size:1.1rem;font-weight:600}.exam-card-body p{color:var(--text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:.88rem;line-height:1.5;display:-webkit-box;overflow:hidden}.exam-card-footer{border-top:1px solid #ffffff08;margin-top:auto;padding-top:16px}.btn-exam-action{color:var(--text-primary);border-radius:var(--radius-sm);transition:var(--transition-fast);cursor:pointer;background:#ffffff08;border:1px solid #ffffff0d;justify-content:center;align-items:center;width:100%;padding:8px 16px;font-size:.85rem;font-weight:600;text-decoration:none;display:flex}.btn-exam-action:hover{background:var(--accent-teal);color:var(--bg-primary);border-color:var(--accent-teal)}.api-doc-hero{background:linear-gradient(120deg, #2563eb29, transparent 34%), linear-gradient(180deg, #08111f 0%, var(--bg-primary) 100%)}.api-endpoint-panel{background:#ffffff0a;border:1px solid #ffffff1f;border-radius:8px;gap:16px;padding:26px;display:grid}.api-panel-label{color:#e2e8f0c7;letter-spacing:.08em;text-transform:uppercase;font-size:.78rem;font-weight:850}.api-endpoint-panel code,.api-row code,.api-command-panel code{overflow-wrap:anywhere;color:var(--text-primary);font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.api-endpoint-panel code{color:#fff;font-size:1rem;line-height:1.6}.api-doc-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;display:grid}.api-doc-card,.api-command-panel{border:1px solid var(--border-color);background:var(--bg-secondary);box-shadow:var(--shadow-sm);border-radius:8px}.api-doc-card{padding:26px}.api-doc-icon{color:#2563eb;background:#2563eb1a;border-radius:8px;justify-content:center;align-items:center;width:48px;height:48px;display:inline-flex}.api-doc-card h2{color:var(--text-primary);margin-top:18px;font-size:1.35rem}.api-doc-card p{color:var(--text-secondary);margin-top:14px;line-height:1.68}.api-row{background:var(--bg-primary);border-radius:8px;grid-template-columns:auto 1fr;align-items:center;gap:10px;margin-top:18px;padding:12px;display:grid}.api-row span{color:var(--accent-teal);background:#0f766e1a;border-radius:6px;padding:5px 8px;font-size:.76rem;font-weight:900}.api-copy-btn{color:var(--accent-teal);align-items:center;gap:7px;margin-top:18px;font-weight:850;display:inline-flex}.api-check-list{gap:12px;margin-top:18px;display:grid}.api-check-list span{color:var(--text-secondary);gap:8px;font-weight:750;display:flex}.api-check-list svg{color:var(--accent-emerald);flex-shrink:0}.api-flow-section{background:var(--bg-secondary)}.api-command-panel{margin-top:28px;overflow:hidden}.api-command-title{border-bottom:1px solid var(--border-color);color:var(--text-primary);align-items:center;gap:10px;padding:18px 22px;font-weight:850;display:flex}.api-command-title svg{color:#2563eb}.api-command-panel pre{background:var(--bg-primary);color:var(--text-secondary);margin:0;padding:24px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.92rem;line-height:1.65;overflow-x:auto}@media (width<=900px){.api-doc-grid{grid-template-columns:1fr}}.doc-detail-banner{background:linear-gradient(180deg, #05070c 0%, var(--bg-primary) 100%);border-bottom:1px solid #ffffff08;padding:140px 0 60px}.btn-back{color:var(--text-secondary);transition:var(--transition-fast);align-items:center;gap:8px;margin-bottom:24px;font-size:.9rem;font-weight:500;display:inline-flex}.btn-back:hover{color:var(--accent-teal);transform:translate(-4px)}.doc-detail-category{color:var(--accent-teal);letter-spacing:.1em;text-transform:uppercase;margin-bottom:8px;font-size:.8rem;font-weight:700;display:block}.doc-detail-title{margin-bottom:20px;font-size:2.2rem;font-weight:800;line-height:1.3}.doc-detail-meta{color:var(--text-secondary);flex-wrap:wrap;gap:24px;font-size:.85rem;display:flex}.meta-item{border-radius:var(--radius-full);background:#ffffff05;border:1px solid #ffffff0a;align-items:center;gap:6px;padding:4px 12px;display:flex}.doc-detail-grid{grid-template-columns:1.3fr .7fr;align-items:start;gap:40px;display:grid}.doc-main-content{width:100%}.desktop-pdf-viewer{border-radius:var(--radius-md);box-shadow:var(--shadow-xl);border-color:#ffffff0d;overflow:hidden}.viewer-header{background:#ffffff05;border-bottom:1px solid #ffffff0d;justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.viewer-title{align-items:center;gap:8px;font-size:.95rem;font-weight:600;display:flex}.btn-small{border-radius:var(--radius-sm)!important;padding:6px 16px!important;font-size:.8rem!important}.iframe-container{background:#1e1e24;width:100%;height:750px}.pdf-iframe{border:none;width:100%;height:100%}.mobile-pdf-preview{border-color:#ffffff0d;flex-direction:column;gap:24px;padding:24px;display:flex}.preview-header{text-align:center;border-radius:var(--radius-md);background:#40e0d008;border:1px dashed #40e0d026;flex-direction:column;align-items:center;gap:10px;padding:20px;display:flex}.preview-header h3{color:var(--text-primary);font-size:1.15rem;font-weight:600}.preview-header p{color:var(--text-secondary);font-size:.8rem;line-height:1.5}.preview-card{border-radius:var(--radius-md);background:#ffffff03;border:1px solid #ffffff08;gap:20px;padding:16px;display:flex}.preview-cover{object-fit:cover;border-radius:var(--radius-sm);border:1px solid #ffffff14;flex-shrink:0;width:110px;height:150px}.preview-details{flex-direction:column;flex:1;justify-content:space-between;display:flex}.preview-details h4{margin-bottom:6px;font-size:1rem;font-weight:600}.preview-desc{color:var(--text-secondary);-webkit-line-clamp:3;-webkit-box-orient:vertical;margin-bottom:16px;font-size:.8rem;line-height:1.5;display:-webkit-box;overflow:hidden}.doc-sidebar{width:100%}.sidebar-section{border-color:#ffffff0d;padding:28px}.sidebar-section-title{color:var(--text-primary);border-left:3px solid var(--accent-teal);margin-bottom:20px;padding-left:10px;font-size:1.05rem;font-weight:700}.sidebar-list{flex-direction:column;gap:16px;display:flex}.sidebar-item{border-radius:var(--radius-sm);transition:var(--transition-fast);background:#ffffff03;border:1px solid #ffffff08;align-items:center;gap:12px;padding:12px;display:flex;position:relative}.sidebar-item:hover{background:#40e0d008;border-color:#40e0d01f;transform:translate(3px)}.sidebar-img-wrapper{border-radius:var(--radius-sm);border:1px solid #ffffff14;flex-shrink:0;width:60px;height:60px;overflow:hidden}.sidebar-img{object-fit:cover;width:100%;height:100%}.sidebar-info{flex:1;min-width:0}.sidebar-item-title{white-space:nowrap;text-overflow:ellipsis;color:var(--text-primary);margin-bottom:4px;font-size:.88rem;font-weight:600;line-height:1.3;overflow:hidden}.sidebar-item-date{color:var(--text-secondary);font-size:.75rem}.sidebar-item-arrow{color:var(--text-secondary);opacity:.5;transition:var(--transition-fast)}.sidebar-item:hover .sidebar-item-arrow{color:var(--accent-teal);opacity:1;transform:scale(1.1)}.loading-doc{min-height:100vh;color:var(--accent-teal);justify-content:center;align-items:center;font-size:1.2rem;display:flex}@media (width<=992px){.doc-detail-banner{padding:100px 0 40px}.doc-detail-title{font-size:1.6rem}.doc-detail-grid{grid-template-columns:1fr;gap:30px}}@media (width<=480px){.preview-card{text-align:center;flex-direction:column;align-items:center}.preview-details{align-items:center}}.doc-detail-banner{border-bottom:1px solid var(--border-color);background:linear-gradient(#fff 0%,#f4f6f8 100%)}.doc-detail-title{color:var(--text-primary);letter-spacing:0}.meta-item{background:var(--bg-secondary);border-color:var(--border-color)}.doc-detail-content .container{max-width:1440px}.doc-detail-grid{grid-template-columns:minmax(0,1fr) 360px;gap:32px}.desktop-pdf-viewer,.sidebar-section{border-color:var(--border-color);background:var(--bg-secondary);box-shadow:var(--shadow-lg)}.viewer-header{border-bottom-color:var(--border-color);background:#fff}.iframe-container{background:#f1f3f5;height:min(86vh,940px);min-height:740px}.sidebar-item{border-color:var(--border-color);background:#fff}.sidebar-img-wrapper{border-color:var(--border-color);width:70px;height:78px}.sidebar-img{object-fit:cover}.sidebar-item-title{white-space:normal;-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box}@media (width<=992px){.doc-detail-grid{grid-template-columns:1fr}}.gift-page-wrapper{width:100%;min-height:100vh;font-family:"Poppins", var(--font-body);background-color:#fae1dd;justify-content:center;align-items:center;margin:0;padding:0;transition:background-color 1s;display:flex;position:relative;overflow:hidden}.gift-page-wrapper.phase-2{background-color:#f7d6d0}.gift-btn-back{color:#d62828;border-radius:var(--radius-full);-webkit-backdrop-filter:blur(8px);z-index:100;background:#fff6;border:1px solid #ffffff80;align-items:center;gap:8px;padding:8px 18px;font-size:.9rem;font-weight:700;transition:all .3s;display:inline-flex;position:fixed;top:24px;left:24px}.gift-btn-back:hover{background:#ffffffb3;transform:translateY(-2px);box-shadow:0 4px 12px #d6282826}.rose-phase-container{flex-direction:column;justify-content:center;align-items:center;width:100%;max-width:600px;height:90vh;padding:20px;display:flex}.rose-svg-wrapper{aspect-ratio:1;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;width:100%;max-width:450px;transition:transform .3s;display:flex;position:relative}.rose-svg-wrapper:hover{transform:scale(1.03)}.rose-svg{width:85%;height:85%;display:block}.animate-path{stroke:#d62828;stroke-width:3.5px;fill:none;stroke-dasharray:1200;stroke-dashoffset:1200px;animation:3.5s cubic-bezier(.4,0,.2,1) forwards drawPath}.leafOne{animation-delay:.1s}.stickLine{stroke:#83aa2e;animation-delay:.5s}.leafTwo{animation-delay:.8s}.leafS1{animation-delay:1.1s}.rose1{stroke:#ff758f;animation-delay:1.4s}.rose2{stroke:#e63946;animation-delay:1.7s}.rose3{stroke:#ff758f;animation-delay:2s}.rose4{stroke:#e63946;animation-delay:2.3s}@keyframes drawPath{to{stroke-dashoffset:0}}.rose-svg-wrapper svg .leafOne{animation:3s ease-out forwards drawPath,1.5s ease-out 3.2s forwards fillLeafOne}.rose-svg-wrapper svg .leafTwo{animation:3s ease-out forwards drawPath,1.5s ease-out 3.2s forwards fillLeafTwo}.rose-svg-wrapper svg .leafS1{animation:3s ease-out forwards drawPath,1.5s ease-out 3.2s forwards fillLeafS1}.rose-svg-wrapper svg .stickLine{animation:3s ease-out forwards drawPath,1.5s ease-out 3.2s forwards fillStick}.rose-svg-wrapper svg .rose1,.rose-svg-wrapper svg .rose3{animation:3s ease-out forwards drawPath,1.5s ease-out 3.2s forwards fillRoseLight}.rose-svg-wrapper svg .rose2,.rose-svg-wrapper svg .rose4{animation:3s ease-out forwards drawPath,1.5s ease-out 3.2s forwards fillRoseDark}@keyframes fillLeafOne{to{fill:#9cdd05;stroke-width:.5px}}@keyframes fillLeafTwo{to{fill:#9cdd05;stroke-width:.5px}}@keyframes fillLeafS1{to{fill:#9cdd05;stroke-width:.5px}}@keyframes fillStick{to{fill:#83aa2e;stroke-width:.5px}}@keyframes fillRoseLight{to{fill:#f37d79;stroke-width:.5px}}@keyframes fillRoseDark{to{fill:#d86666;stroke-width:.5px}}.click-prompt-text{color:#d62828;text-shadow:0 2px 4px #fffc;align-items:center;gap:10px;margin-top:25px;font-size:1.4rem;font-weight:800;animation:2.5s ease-in-out infinite float;display:flex}.icon-gift{color:#ff4d6d}.envelope-phase-container{flex-direction:column;justify-content:center;align-items:center;width:100vw;height:100vh;display:flex;position:relative}.typing-svg-container{pointer-events:none;z-index:1;width:80%;max-width:550px;height:40vh;position:absolute;top:8%}.heart-text-svg{width:100%;height:100%;display:block}.heart-text-svg text{fill:#e6668a;font-family:Courier New,Courier,monospace;font-size:9px;font-weight:700}.heart-text-svg path{fill:none;stroke:#0000}.text-path-animate{animation:15s linear infinite scrollTextPath}@keyframes scrollTextPath{0%{startOffset:0%}to{startOffset:100%}}.valentines-envelope-wrapper{z-index:5;flex-direction:column;align-items:center;margin-top:150px;display:flex;position:relative}.valentines-card{cursor:pointer;width:320px;height:220px;transform-style:preserve-3d;position:relative}.envelope-back{border-radius:var(--radius-sm);z-index:1;background-color:#f08080;width:100%;height:100%;position:absolute}.envelope-flap{z-index:4;transform-origin:top;border-top:115px solid #f4978e;border-left:160px solid #0000;border-right:160px solid #0000;width:0;height:0;transition:transform .4s .2s,z-index .1s .2s;position:absolute;top:0;left:0}.envelope-front{z-index:3;border-top:110px solid #0000;border-bottom:110px solid #f8ad9d;border-left:160px solid #f8ad9d;border-right:160px solid #0000;width:0;height:0;position:absolute;bottom:0;left:0}.valentines-card.hovered .envelope-flap{z-index:1;transform:rotateX(180deg)}.valentines-card.hovered .letter-inner-card{transform:translateY(-110px)}.letter-inner-card{z-index:2;background-color:#eae2b7;border:2px dashed #003049;border-radius:4px;flex-direction:column;justify-content:space-between;align-items:center;width:288px;height:180px;padding:16px;transition:transform .5s ease-out;display:flex;position:absolute;top:20px;left:16px;box-shadow:-5px -5px 30px #00000026}.card-message{text-align:center;color:#003049;margin-top:10px;font-family:Brush Script MT,Dancing Script,cursive;font-size:1.8rem;line-height:1.2}.card-heart-icon{color:#d62828;animation:1.2s infinite heartbeat}@keyframes heartbeat{0%,to{transform:scale(1)}50%{transform:scale(1.2)}}.floating-hearts{pointer-events:none;z-index:5;width:100%;height:100%;position:absolute;top:0;left:0}.mini-heart{opacity:0;font-size:1.2rem;position:absolute;bottom:20px}.mini-heart.h1{animation:2s ease-out .2s infinite heartFloatUp;left:40px}.mini-heart.h2{animation:2.5s ease-out .6s infinite heartFloatUp;left:100px}.mini-heart.h3{animation:2.2s ease-out .1s infinite heartFloatUp;left:160px}.mini-heart.h4{animation:2.8s ease-out .8s infinite heartFloatUp;left:220px}.mini-heart.h5{animation:2s ease-out .4s infinite heartFloatUp;left:280px}@keyframes heartFloatUp{0%{opacity:0;transform:translateY(0)scale(.3)rotate(0)}20%{opacity:.9}to{opacity:0;transform:translateY(-160px)scale(1.3)rotate(45deg)}}.envelope-shadow{z-index:-1;background-color:#00000014;border-radius:50%;width:340px;height:20px;animation:3s ease-in-out infinite shadowPulse;position:absolute;top:235px;left:-10px}@keyframes shadowPulse{0%,to{transform:scaleX(1)}50%{transform:scaleX(.85)}}.envelope-tip-text{color:#b05757;text-align:center;margin-top:35px;font-size:.95rem;font-weight:700}.letter-modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background:#0009;justify-content:center;align-items:center;width:100vw;height:100vh;animation:.3s ease-out forwards modalFadeIn;display:flex;position:fixed;top:0;left:0}.letter-modal-box{border-radius:var(--radius-lg);background-color:#ffebeb;border:1px solid #fff3;width:90%;max-width:600px;padding:24px;animation:.4s cubic-bezier(.175,.885,.32,1.275) forwards letterPopup;position:relative;box-shadow:0 15px 35px #00000040}@keyframes letterPopup{0%{opacity:0;transform:scale(.7)}to{opacity:1;transform:scale(1)}}.btn-close-modal{color:#f66;border-radius:var(--radius-full);z-index:1002;background:#ffffff80;justify-content:center;align-items:center;padding:4px;transition:all .2s;display:flex;position:absolute;top:16px;right:16px}.btn-close-modal:hover{color:#fff;background:#f66;transform:rotate(90deg)}.letter-modal-dashed-border{border-radius:calc(var(--radius-lg) - 4px);border:2px dashed #f66;flex-direction:column;width:100%;height:100%;min-height:380px;padding:20px;display:flex;position:relative}.heart-stamp{color:#f66;border-radius:var(--radius-full);z-index:10;background:#ffebeb;padding:6px;animation:2s infinite pulse-slow;position:absolute}.stamp-tl{top:8px;right:8px}.stamp-br{bottom:8px;left:8px}.letter-modal-content{flex-direction:column;flex-grow:1;justify-content:space-between;align-items:center;display:flex}.letter-title{color:#d62828;text-align:center;margin-top:10px;margin-bottom:16px;font-family:Dancing Script,cursive;font-size:2.2rem}.letter-body-text{text-align:center;color:#003049;white-space:pre-wrap;min-height:100px;margin-bottom:24px;padding:0 10px;font-family:Dancing Script,cursive;font-size:1.3rem;line-height:1.6}.letter-animations-grid{justify-content:space-between;align-items:flex-end;width:100%;margin-top:auto;display:flex}.cat-gif-container{width:80px}.cat-gif{border-radius:8px;width:100%}.heart-gif-container{width:130px}.heart-gif{width:100%}@media (width<=576px){.gift-btn-back{padding:6px 14px;font-size:.8rem;top:16px;left:16px}.rose-svg-wrapper{max-width:320px}.click-prompt-text{font-size:1.1rem}.typing-svg-container{width:90%;height:30vh;top:5%}.valentines-card{width:280px;height:190px}.envelope-flap{border-top-width:100px;border-left-width:140px;border-right-width:140px}.envelope-front{border-bottom-width:95px;border-left-width:140px;border-right-width:140px}.letter-inner-card{width:250px;height:155px;top:15px;left:15px}.card-message{font-size:1.5rem}.envelope-shadow{width:300px;top:200px}.letter-title{font-size:1.7rem}.letter-body-text{font-size:1.15rem}.cat-gif-container{width:50px}.heart-gif-container{width:90px}.letter-modal-box{padding:16px}.letter-modal-dashed-border{min-height:350px;padding:12px}}.doc-card{border-radius:var(--radius-md);height:100%;transition:var(--transition-normal);background:var(--bg-secondary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);flex-direction:column;display:flex;overflow:hidden}.doc-card:hover{background:var(--bg-secondary);box-shadow:var(--shadow-lg);border-color:#0f766e47;transform:translateY(-4px)}.card-image-wrapper{background:var(--bg-tertiary);width:100%;padding-top:56.25%;position:relative;overflow:hidden}.card-image{object-fit:cover;width:100%;height:100%;transition:transform var(--transition-slow);position:absolute;top:0;left:0}.doc-card:hover .card-image{transform:scale(1.06)}.card-category-tag{-webkit-backdrop-filter:blur(8px);border:1px solid var(--accent-teal);color:var(--accent-teal);border-radius:var(--radius-full);z-index:1;text-transform:uppercase;letter-spacing:.5px;background:#0f766e26;padding:4px 10px;font-size:.72rem;font-weight:700;position:absolute;top:14px;left:14px}:root:not(.light-theme) .card-category-tag{background:#2dd4bf26}.card-body{flex-direction:column;flex:1;padding:24px;display:flex}.card-meta{color:var(--text-secondary);align-items:center;gap:6px;margin-bottom:12px;font-size:.8rem;display:flex}.card-title{margin-bottom:12px;font-size:1.15rem;font-weight:600;line-height:1.4}.card-title a{color:var(--text-primary);-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.card-title a:hover{color:var(--accent-teal)}.card-desc{color:var(--text-secondary);-webkit-line-clamp:3;-webkit-box-orient:vertical;flex:1;margin-bottom:20px;font-size:.88rem;line-height:1.5;display:-webkit-box;overflow:hidden}.card-footer{border-top:1px solid var(--border-color);justify-content:flex-end;padding-top:16px;display:flex}.btn-read-more{color:var(--accent-teal);transition:var(--transition-fast);align-items:center;gap:4px;font-size:.88rem;font-weight:600;display:inline-flex}.btn-read-more .arrow-icon{transition:transform var(--transition-fast)}.doc-card:hover .btn-read-more{color:var(--accent-teal-hover)}.doc-card:hover .btn-read-more .arrow-icon{transform:translate(2px,-2px)}:root{--color-bg:var(--bg-primary);--color-border:var(--border-color);--color-teal:var(--accent-teal);--color-text-muted:var(--text-secondary);--font-accent:var(--font-heading)}.resources-page{background-color:var(--bg-primary);min-height:100vh;padding-bottom:5rem}.resources-banner{background:linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);border-bottom:1px solid var(--border-color);text-align:center;padding:140px 0 3rem;transition:background .3s;position:relative;overflow:hidden}:root.light-theme .resources-banner{background:linear-gradient(135deg,#eef2f6 0%,#f5f7fb 100%)}.resources-banner:before{content:"";pointer-events:none;background:radial-gradient(circle,#40e0d00a 0%,#0000 60%);width:140%;height:200%;position:absolute;top:-50%;left:-20%}.resources-banner-subtitle{color:var(--accent-teal);font-family:var(--font-heading);letter-spacing:2px;text-transform:uppercase;background:#06b6d41a;border-radius:20px;margin-bottom:.75rem;padding:.25rem .75rem;font-size:.85rem;font-weight:600;display:inline-block}.resources-banner-title{font-size:clamp(2.1rem,4vw,3.2rem);font-weight:800;font-family:var(--font-heading);color:var(--text-primary);margin-bottom:1rem}.resource-quality-strip{padding:2rem 0 0}.quality-strip-grid{grid-template-columns:minmax(0,1fr) minmax(280px,520px);align-items:end;gap:2rem;display:grid}.quality-strip-grid h2{color:var(--text-primary);margin-top:.8rem;font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.15}.quality-strip-grid p{color:var(--text-secondary);line-height:1.7}.resources-banner-desc{max-width:600px;color:var(--text-secondary);margin:0 auto;font-size:1rem;line-height:1.6}.resources-control-panel{z-index:10;margin-top:-2rem;padding:0 1rem;position:relative}.controls-wrapper{border:1px solid var(--glass-border);background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);border-radius:16px;padding:1.5rem;box-shadow:0 10px 30px #00000026,inset 0 1px #ffffff0d}.search-and-view-row{align-items:center;gap:1rem;margin-bottom:1.25rem;display:flex}.search-input-wrapper{flex:1;position:relative}.search-icon{color:var(--text-secondary);pointer-events:none;position:absolute;top:50%;left:1rem;transform:translateY(-50%)}.search-field{background:var(--bg-primary);border:1px solid var(--border-color);width:100%;color:var(--text-primary);border-radius:10px;padding:.85rem 1rem .85rem 2.75rem;font-size:.95rem;transition:all .3s}.search-field:focus{border-color:var(--accent-teal);outline:none;box-shadow:0 0 12px #06b6d426}.layout-toggle-buttons{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:8px;gap:.5rem;padding:.25rem;display:flex}.btn-layout-toggle{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;padding:.5rem;transition:all .2s;display:flex}.btn-layout-toggle.active{background:var(--accent-teal);color:var(--bg-primary)}.resources-tabs-wrapper{gap:.5rem;padding-bottom:.25rem;display:flex;overflow-x:auto}.resources-tabs-wrapper::-webkit-scrollbar{height:4px}.resources-tabs-wrapper::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}.tab-btn{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;white-space:nowrap;border-radius:8px;padding:.6rem 1.2rem;font-size:.88rem;font-weight:600;transition:all .2s}.tab-btn:hover{color:var(--text-primary);border-color:#06b6d466}.tab-btn.active{border-color:var(--accent-teal);color:var(--accent-teal);background:#06b6d41a}.resources-content-section{padding:3rem 0}.resources-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:2rem;display:grid}.resources-list{flex-direction:column;gap:1.25rem;display:flex}.list-item-card{border:1px solid var(--border-color);background:var(--bg-secondary);box-shadow:var(--shadow-sm);border-radius:12px;align-items:center;gap:1.5rem;padding:1.25rem;transition:all .3s;display:flex}.list-item-card:hover{border-color:var(--accent-teal);background:var(--bg-tertiary);box-shadow:var(--shadow-md);transform:translate(5px)}.list-img-wrapper{border:1px solid var(--border-color);border-radius:8px;flex-shrink:0;width:120px;height:80px;overflow:hidden}.list-img{object-fit:cover;width:100%;height:100%}.list-info{flex:1;min-width:0}.list-category-badge{text-transform:uppercase;color:var(--accent-teal);letter-spacing:.5px;background:#0f766e1a;border:1px solid #0f766e40;border-radius:4px;margin-bottom:.5rem;padding:3px 8px;font-size:.7rem;font-weight:700;transition:all .3s;display:inline-block}:root:not(.light-theme) .list-category-badge{background:#2dd4bf1a;border-color:#2dd4bf40}.list-title{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;margin-bottom:.35rem;font-size:1.1rem;font-weight:600;overflow:hidden}.list-desc{color:var(--text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:.85rem;line-height:1.4;display:-webkit-box;overflow:hidden}.list-action-area{flex-shrink:0}.pagination-container{justify-content:center;align-items:center;gap:.5rem;margin-top:3.5rem;display:flex}.btn-page{background:var(--bg-secondary);border:1px solid var(--border-color);width:40px;height:40px;color:var(--text-secondary);cursor:pointer;border-radius:8px;justify-content:center;align-items:center;font-weight:600;transition:all .2s;display:flex}.btn-page:hover:not(:disabled){border-color:var(--accent-teal);color:var(--accent-teal);background:#06b6d40d}.btn-page.active{background:var(--accent-teal);border-color:var(--accent-teal);color:var(--bg-primary);font-weight:700}.btn-page:disabled{opacity:.35;cursor:not-allowed}.page-info{color:var(--text-secondary);margin:0 1rem;font-size:.9rem}.empty-results{text-align:center;background:var(--bg-secondary);border:1px dashed var(--border-color);border-radius:16px;padding:4rem 1rem}.empty-icon-box{width:60px;height:60px;color:var(--accent-rose);background:#f43f5e1a;border-radius:50%;justify-content:center;align-items:center;margin:0 auto 1.5rem;display:flex}.empty-title{color:var(--text-primary);margin-bottom:.5rem;font-size:1.25rem;font-weight:600}.empty-desc{color:var(--text-secondary);font-size:.9rem}@media (width<=768px){.resources-banner-title{font-size:2rem}.search-and-view-row{flex-direction:column;align-items:stretch}.layout-toggle-buttons{display:none}.list-item-card{flex-direction:column;align-items:stretch;gap:1rem}.list-img-wrapper{width:100%;height:160px}.list-title{white-space:normal}}@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,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)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{text-indent:0;text-rendering:auto;font:1.21em/1.2 KaTeX_Main,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.18.1"}.katex .katex-mathml{clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.katex-newline{display:block}.katex .katex-base{white-space:nowrap;width:min-content;position:relative}.katex .katex-base,.katex .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;table-layout:fixed;display:inline-table}.katex .vlist-r{display:table-row}.katex .vlist{vertical-align:bottom;display:table-cell;position:relative}.katex .vlist>span{height:0;display:block;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{width:0;overflow:hidden}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{vertical-align:bottom;width:2px;min-width:2px;font-size:1px;display:table-cell}.katex .katex-vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .katex-thinbox{flex-direction:row;width:0;max-width:0;display:inline-flex}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .katex-hdashline,.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-rule,.katex .katex-underline .underline-line,.katex .mfrac .frac-line{min-height:1px}.katex .mspace{display:inline-block}.katex .katex-smash{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.katex .clap>.katex-inner,.katex .llap>.katex-inner,.katex .rlap>.katex-inner{position:absolute}.katex .clap>.katex-fix,.katex .llap>.katex-fix,.katex .rlap>.katex-fix{display:inline-block}.katex .llap>.katex-inner{right:0}.katex .clap>.katex-inner,.katex .rlap>.katex-inner{left:0}.katex .clap>.katex-inner>span{margin-left:-50%;margin-right:50%}.katex .katex-rule{border:0 solid;display:inline-block;position:relative}.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-underline .underline-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .katex-hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.katex-root{margin-left:.277778em;margin-right:-.555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .katex-sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .katex-sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .katex-sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .katex-sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .katex-sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .katex-sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .katex-sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .katex-sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .katex-sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .katex-sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .katex-sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .katex-sizing.reset-size2.size1{font-size:.833333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .katex-sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .katex-sizing.reset-size2.size3{font-size:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .katex-sizing.reset-size2.size4{font-size:1.33333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .katex-sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .katex-sizing.reset-size2.size6{font-size:1.66667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .katex-sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .katex-sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .katex-sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .katex-sizing.reset-size2.size10{font-size:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .katex-sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .katex-sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .katex-sizing.reset-size3.size2{font-size:.857143em}.katex .fontsize-ensurer.reset-size3.size3,.katex .katex-sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .katex-sizing.reset-size3.size4{font-size:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .katex-sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .katex-sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .katex-sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .katex-sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .katex-sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .katex-sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .katex-sizing.reset-size3.size11{font-size:3.55429em}.katex .fontsize-ensurer.reset-size4.size1,.katex .katex-sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .katex-sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .katex-sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .katex-sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .katex-sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .katex-sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .katex-sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .katex-sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .katex-sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .katex-sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .katex-sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .katex-sizing.reset-size5.size1{font-size:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .katex-sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .katex-sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .katex-sizing.reset-size5.size4{font-size:.888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .katex-sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .katex-sizing.reset-size5.size6{font-size:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .katex-sizing.reset-size5.size7{font-size:1.33333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .katex-sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .katex-sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .katex-sizing.reset-size5.size10{font-size:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .katex-sizing.reset-size5.size11{font-size:2.76444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .katex-sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .katex-sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .katex-sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .katex-sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .katex-sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .katex-sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .katex-sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .katex-sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .katex-sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .katex-sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .katex-sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .katex-sizing.reset-size7.size1{font-size:.416667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .katex-sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .katex-sizing.reset-size7.size3{font-size:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .katex-sizing.reset-size7.size4{font-size:.666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .katex-sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .katex-sizing.reset-size7.size6{font-size:.833333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .katex-sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .katex-sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .katex-sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .katex-sizing.reset-size7.size10{font-size:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .katex-sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .katex-sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .katex-sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .katex-sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .katex-sizing.reset-size8.size4{font-size:.555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .katex-sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .katex-sizing.reset-size8.size6{font-size:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .katex-sizing.reset-size8.size7{font-size:.833333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .katex-sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .katex-sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .katex-sizing.reset-size8.size10{font-size:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .katex-sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .katex-sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .katex-sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .katex-sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .katex-sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .katex-sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .katex-sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .katex-sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .katex-sizing.reset-size9.size8{font-size:.833333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .katex-sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .katex-sizing.reset-size9.size10{font-size:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .katex-sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .katex-sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .katex-sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .katex-sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .katex-sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .katex-sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .katex-sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .katex-sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .katex-sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .katex-sizing.reset-size10.size9{font-size:.833173em}.katex .fontsize-ensurer.reset-size10.size10,.katex .katex-sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .katex-sizing.reset-size10.size11{font-size:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .katex-sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .katex-sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .katex-sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .katex-sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .katex-sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .katex-sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .katex-sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .katex-sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .katex-sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .katex-sizing.reset-size11.size10{font-size:.833601em}.katex .fontsize-ensurer.reset-size11.size11,.katex .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{width:.12em;display:inline-block}.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 .katex-accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .katex-accent .accent-body{position:relative}.katex .katex-accent .accent-body:not(.accent-full){width:0}.katex .katex-overlay{display:block}.katex .mtable .vertical-separator{min-width:1px;display:inline-block}.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;height:inherit;width:100%;display:block;position:absolute}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;min-width:0;max-width:none;min-height:0;max-height:none}.katex .katex-stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .katex-stretchy:after,.katex .katex-stretchy:before{content:""}.katex .hide-tail{width:100%;position:relative;overflow:hidden}.katex .halfarrow-left{width:50.2%;position:absolute;left:0;overflow:hidden}.katex .halfarrow-right{width:50.2%;position:absolute;right:0;overflow:hidden}.katex .brace-left{width:25.1%;position:absolute;left:0;overflow:hidden}.katex .brace-center{width:50%;position:absolute;left:25%;overflow:hidden}.katex .brace-right{width:25.1%;position:absolute;right:0;overflow:hidden}.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{box-sizing:border-box;border:.04em solid}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .katex-sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;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{text-align:left;display:inline-block;position:absolute;right:calc(50% + .3em)}.katex .cd-label-right{text-align:right;display:inline-block;position:absolute;left:calc(50% + .3em)}.katex-display{text-align:center;margin:1em 0;display:block}.katex-display>.katex{text-align:center;white-space:nowrap;display:block}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.katex-tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.katex-tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}.blog-engagement{border:1px solid var(--article-line);background:var(--article-paper);box-shadow:0 20px 48px color-mix(in srgb, var(--article-ink) 7%, transparent);border-radius:20px;margin:0 68px 58px;overflow:hidden}.blog-engagement-header{border-bottom:1px solid var(--article-line);background:radial-gradient(circle at 92% 0, var(--article-accent-pale), transparent 18rem), var(--article-paper);justify-content:space-between;align-items:flex-end;gap:28px;padding:28px 30px 25px;display:flex}.blog-engagement-kicker{color:var(--article-accent);letter-spacing:.12em;text-transform:uppercase;margin-bottom:7px;font-size:.66rem;font-weight:850;display:block}.forum-blog-page .blog-engagement h2{color:var(--article-ink);letter-spacing:-.035em;margin:0;font-size:1.55rem;font-weight:840}.blog-engagement-header p{max-width:620px;color:var(--article-muted);margin:8px 0 0;font-size:.82rem;line-height:1.65}.blog-engagement-stats{flex:none;gap:8px;display:flex}.blog-engagement-stats span{border:1px solid var(--article-line);background:color-mix(in srgb, var(--article-soft) 75%, var(--article-paper));color:var(--article-muted);border-radius:999px;align-items:center;gap:6px;padding:8px 10px;font-size:.67rem;font-weight:720;display:inline-flex}.blog-reaction-panel{border-bottom:1px solid var(--article-line);background:color-mix(in srgb, var(--article-soft) 45%, var(--article-paper));justify-content:space-between;align-items:center;gap:25px;padding:20px 30px;display:flex}.blog-reaction-panel>div:first-child strong,.blog-reaction-panel>div:first-child span{display:block}.blog-reaction-panel>div:first-child strong{color:var(--article-ink);font-size:.82rem}.blog-reaction-panel>div:first-child span{color:var(--article-muted);margin-top:3px;font-size:.7rem}.blog-reaction-list{flex-wrap:wrap;justify-content:flex-end;gap:7px;display:flex}.blog-reaction-list button{border:1px solid var(--article-line);background:var(--article-paper);color:var(--article-muted);font:inherit;cursor:pointer;border-radius:11px;grid-template-columns:20px auto auto;align-items:center;gap:7px;padding:9px 11px;font-size:.69rem;font-weight:730;transition:border-color .16s,background .16s,color .16s,transform .16s;display:inline-grid}.blog-reaction-list button:hover{border-color:color-mix(in srgb, var(--article-accent) 42%, var(--article-line));color:var(--article-accent);transform:translateY(-1px)}.blog-reaction-list button.is-selected{border-color:color-mix(in srgb, var(--article-accent) 48%, var(--article-line));background:var(--article-accent-pale);color:var(--article-accent-dark)}.blog-reaction-list button:disabled{cursor:wait;opacity:.6}.blog-reaction-list button strong{background:var(--article-soft);min-width:18px;color:inherit;text-align:center;border-radius:999px;padding:2px 5px;font-size:.61rem}.blog-discussion-grid{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);display:grid}.blog-comment-form,.blog-comment-stream{min-width:0;padding:27px 30px 30px}.blog-comment-form{border-right:1px solid var(--article-line)}.blog-comment-form-heading{grid-template-columns:42px minmax(0,1fr);align-items:center;gap:11px;margin-bottom:22px;display:grid}.comment-avatar{background:var(--article-accent-pale);width:42px;height:42px;color:var(--article-accent-dark);letter-spacing:-.02em;border-radius:50%;justify-content:center;align-items:center;font-size:.73rem;font-weight:850;display:inline-flex}.blog-comment-form-heading strong,.blog-comment-form-heading span{display:block}.blog-comment-form-heading strong{color:var(--article-ink);font-size:.84rem}.blog-comment-form-heading span{color:var(--article-muted);margin-top:3px;font-size:.68rem;line-height:1.5}.blog-comment-form label{color:var(--article-ink);margin-bottom:7px;font-size:.68rem;font-weight:790;display:block}.blog-comment-form input,.blog-comment-form textarea{border:1px solid var(--article-line);background:color-mix(in srgb, var(--article-soft) 48%, var(--article-paper));width:100%;color:var(--article-ink);font:inherit;border-radius:11px;outline:0;font-size:.78rem;transition:border-color .16s,box-shadow .16s,background .16s}.blog-comment-form input{height:42px;margin-bottom:17px;padding:0 13px}.blog-comment-form textarea{resize:vertical;min-height:132px;padding:12px 13px;line-height:1.6}.blog-comment-form input:focus,.blog-comment-form textarea:focus{border-color:color-mix(in srgb, var(--article-accent) 55%, var(--article-line));background:var(--article-paper);box-shadow:0 0 0 3px color-mix(in srgb, var(--article-accent) 12%, transparent)}.blog-comment-form input::placeholder,.blog-comment-form textarea::placeholder{color:color-mix(in srgb, var(--article-muted) 68%, transparent)}.blog-comment-label-row{justify-content:space-between;align-items:center;display:flex}.blog-comment-label-row span{color:var(--article-muted);font-size:.61rem}.blog-comment-form-footer{justify-content:space-between;align-items:center;gap:16px;margin-top:13px;display:flex}.blog-comment-form-footer p{max-width:260px;color:var(--article-muted);margin:0;font-size:.62rem;line-height:1.5}.blog-comment-form-footer button{background:var(--article-accent);color:#fff;font:inherit;cursor:pointer;border:0;border-radius:10px;flex:none;align-items:center;gap:7px;padding:10px 13px;font-size:.69rem;font-weight:790;display:inline-flex}.blog-comment-form-footer button:disabled{cursor:wait;opacity:.68}.blog-comment-notice,.blog-community-status{border-radius:9px;margin-top:12px;padding:9px 11px;font-size:.65rem;line-height:1.5}.blog-comment-notice{background:var(--article-accent-pale);color:var(--article-accent-dark)}.blog-community-status{background:var(--article-warm-pale);color:var(--article-warm)}.blog-comment-stream-heading{border-bottom:1px solid var(--article-line);justify-content:space-between;align-items:center;gap:18px;padding-bottom:17px;display:flex}.blog-comment-stream-heading span,.blog-comment-stream-heading strong{display:block}.blog-comment-stream-heading span{color:var(--article-accent);letter-spacing:.1em;text-transform:uppercase;font-size:.62rem;font-weight:830}.blog-comment-stream-heading strong{color:var(--article-ink);margin-top:3px;font-size:.84rem}.blog-comment-stream-heading svg{color:var(--article-accent)}.blog-comment-empty{text-align:center;justify-items:center;padding:48px 20px 38px;display:grid}.blog-comment-empty svg{color:var(--article-accent);margin-bottom:12px}.blog-comment-empty strong{color:var(--article-ink);font-size:.84rem}.blog-comment-empty p{max-width:300px;color:var(--article-muted);margin:6px 0 0;font-size:.69rem;line-height:1.55}.blog-comment-list{display:grid}.blog-comment-item{border-bottom:1px solid var(--article-line);grid-template-columns:42px minmax(0,1fr);gap:12px;padding:18px 0;display:grid}.blog-comment-item:last-child{border-bottom:0}.blog-comment-item header{justify-content:space-between;align-items:baseline;gap:12px;display:flex}.blog-comment-item header strong{color:var(--article-ink);font-size:.77rem}.blog-comment-item time{color:var(--article-muted);font-size:.59rem}.blog-comment-item p{color:var(--article-muted);white-space:pre-wrap;overflow-wrap:anywhere;margin:6px 0 9px;font-size:.75rem;line-height:1.65}.blog-comment-item button{color:var(--article-muted);font:inherit;cursor:pointer;background:0 0;border:0;align-items:center;gap:5px;padding:5px 0;font-size:.63rem;font-weight:730;display:inline-flex}.blog-comment-item button.is-liked,.blog-comment-item button:hover{color:var(--article-accent)}.blog-comment-item button span{background:var(--article-soft);border-radius:999px;justify-content:center;align-items:center;min-width:18px;height:18px;font-size:.57rem;display:inline-flex}@media (width<=1180px){.blog-engagement{margin-left:48px;margin-right:48px}.blog-reaction-panel{flex-direction:column;align-items:flex-start}.blog-reaction-list{justify-content:flex-start}}@media (width<=760px){.blog-engagement{border-radius:16px;margin:0 23px 42px}.blog-engagement-header{flex-direction:column;align-items:flex-start;padding:22px 20px}.blog-engagement-stats{flex-wrap:wrap}.blog-reaction-panel{padding:18px 20px}.blog-reaction-list{grid-template-columns:repeat(2,minmax(0,1fr));width:100%;display:grid}.blog-reaction-list button{grid-template-columns:20px minmax(0,1fr) auto}.blog-discussion-grid{grid-template-columns:1fr}.blog-comment-form,.blog-comment-stream{padding:23px 20px}.blog-comment-form{border-right:0;border-bottom:1px solid var(--article-line)}.blog-comment-form-footer{flex-direction:column;align-items:flex-start}.blog-comment-form-footer button{justify-content:center;width:100%}}.forum-blog-page{--article-ink:#17201c;--article-muted:#637069;--article-line:#dfe5e1;--article-paper:#fff;--article-canvas:#f4f6f3;--article-soft:#f0f5f1;--article-accent:#176b4a;--article-accent-dark:#0e4e35;--article-accent-pale:#e6f1ea;--article-warm:#a66716;--article-warm-pale:#fbf2df;--article-danger:#a23f3f;--article-danger-pale:#fbeceb;--article-shadow:0 26px 70px #1c2d241a;background:radial-gradient(circle at 92% 7%, #26714f14, transparent 23rem), var(--article-canvas);color:var(--article-ink);overflow-x:clip}:root:not(.light-theme) .forum-blog-page{--article-ink:#eef5f0;--article-muted:#9eaaa3;--article-line:#ffffff1a;--article-paper:#101713;--article-canvas:#080d0a;--article-soft:#151f19;--article-accent:#69d39f;--article-accent-dark:#8de3b7;--article-accent-pale:#4ab47b1f;--article-warm:#f0bc6e;--article-warm-pale:#d0903621;--article-danger:#f09a95;--article-danger-pale:#cf494924;--article-shadow:0 30px 90px #00000057}.article-reading-progress{z-index:2000;pointer-events:none;background:0 0;height:3px;position:fixed;inset:0 0 auto}.article-reading-progress span{background:var(--article-accent);border-radius:0 999px 999px 0;height:100%;display:block;box-shadow:0 0 14px #176b4a57;transition:width 80ms linear!important}.forum-blog-page .forum-blog-hero{background:0 0;padding:116px 0 84px}.forum-blog-page .forum-blog-hero .container{width:min(100% - 32px,1450px);max-width:1450px;padding:0}.forum-blog-page .forum-blog-grid{grid-template-columns:286px minmax(0,960px);justify-content:center;align-items:start;gap:44px;display:grid}.forum-blog-page .article-toc{border:1px solid var(--article-line);background:color-mix(in srgb, var(--article-paper) 92%, transparent);scrollbar-width:thin;scrollbar-color:color-mix(in srgb, var(--article-muted) 35%, transparent) transparent;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-radius:18px;max-height:calc(100vh - 112px);padding:22px 18px 18px;position:sticky;top:92px;overflow:auto;box-shadow:0 12px 35px #23372c12}.toc-heading-row{border-bottom:1px solid var(--article-line);justify-content:space-between;align-items:flex-end;gap:16px;margin:0 4px 16px;padding-bottom:15px;display:flex}.toc-kicker{color:var(--article-accent);letter-spacing:.12em;text-transform:uppercase;margin-bottom:3px;font-size:.68rem;font-weight:800;display:block}.forum-blog-page .article-toc h3.toc-title{color:var(--article-ink);letter-spacing:-.02em;text-transform:none;border:0;margin:0;padding:0;font-size:1.12rem;font-weight:800}.toc-progress-value{color:var(--article-muted);font-variant-numeric:tabular-nums;font-size:.75rem;font-weight:800}.forum-blog-page .toc-list{gap:2px;margin:0;padding:0;display:grid}.forum-blog-page .toc-list li a{color:var(--article-muted);background:0 0;grid-template-columns:25px 1fr;align-items:start;gap:7px;margin:0;padding:9px 8px;font-size:.8rem;font-weight:600;line-height:1.45;display:grid;transform:none;border:0!important;border-radius:9px!important}.forum-blog-page .toc-list li a:hover{color:var(--article-ink);background:var(--article-soft);transform:none}.forum-blog-page .toc-list li a.active{font-weight:800;color:var(--article-accent-dark)!important;background:var(--article-accent-pale)!important}.toc-item-index{color:color-mix(in srgb, var(--article-muted) 70%, transparent);font-variant-numeric:tabular-nums;letter-spacing:.04em;padding-top:1px;font-size:.68rem}.toc-list a.active .toc-item-index{color:var(--article-accent)}.toc-scope-note{background:var(--article-accent-pale);color:var(--article-accent-dark);border-radius:11px;align-items:flex-start;gap:9px;margin:18px 4px 0;padding:12px;font-size:.75rem;font-weight:750;line-height:1.45;display:flex}.toc-scope-note svg{flex:none;margin-top:1px}.forum-blog-page .toc-footer{border-top:1px solid var(--article-line);color:var(--article-muted);justify-content:flex-end;margin:15px 4px 0;padding-top:12px;font-size:.7rem;font-weight:750;display:flex}.forum-blog-page .forum-article{border:1px solid var(--article-line);background:var(--article-paper);width:100%;min-width:0;max-width:none;box-shadow:var(--article-shadow);color:var(--article-ink);border-radius:26px;padding:0;font-family:Be Vietnam Pro,Inter,system-ui,sans-serif;overflow:hidden}.editorial-article-hero{border-bottom:1px solid var(--article-line);background:linear-gradient(180deg, color-mix(in srgb, var(--article-accent-pale) 42%, transparent), transparent 68%), var(--article-paper);padding:56px 68px 50px;position:relative}.editorial-article-hero:before{background:var(--article-accent);content:"";width:4px;position:absolute;inset:0 auto 0 0}.forum-blog-page .article-back-link{color:var(--article-accent-dark);align-items:center;gap:8px;margin:0 0 34px;font-size:.84rem;font-weight:800;display:inline-flex}.forum-blog-page .article-back-link:hover{color:var(--article-accent);gap:11px}.article-kicker-row{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;display:flex}.article-kicker,.article-verified{letter-spacing:.04em;border-radius:999px;align-items:center;gap:6px;padding:6px 10px;font-size:.72rem;font-weight:800;display:inline-flex}.article-kicker{background:var(--article-accent);color:#fff}:root:not(.light-theme) .article-kicker{color:#07110b}.article-verified{border:1px solid color-mix(in srgb, var(--article-accent) 26%, transparent);background:var(--article-accent-pale);color:var(--article-accent-dark)}.forum-blog-page .forum-article h1.article-title{max-width:850px;color:var(--article-ink);letter-spacing:-.055em;text-wrap:balance;margin:0;font-size:clamp(2.45rem,5vw,4.35rem);font-weight:820;line-height:1.08}.article-dek{max-width:790px;color:var(--article-muted);margin:25px 0 0;font-size:clamp(1.02rem,1.7vw,1.18rem);line-height:1.75}.forum-blog-page .article-byline{color:var(--article-muted);flex-wrap:wrap;gap:10px 22px;margin:27px 0 0;font-size:.82rem;font-weight:650;display:flex}.forum-blog-page .article-byline span{align-items:center;gap:6px;display:inline-flex}.forum-blog-page .article-byline span:first-child{color:var(--article-ink);font-weight:800}.article-scope-card{border:1px solid color-mix(in srgb, var(--article-accent) 20%, var(--article-line));background:var(--article-soft);border-radius:14px;grid-template-columns:24px 1fr;gap:13px;margin-top:34px;padding:19px 20px;display:grid}.article-scope-card>svg{color:var(--article-accent);margin-top:2px}.article-scope-card span,.article-scope-card strong{display:block}.article-scope-card span{color:var(--article-accent);letter-spacing:.12em;text-transform:uppercase;margin-bottom:2px;font-size:.66rem;font-weight:850}.article-scope-card strong{color:var(--article-ink);font-size:.95rem}.article-scope-card p{color:var(--article-muted);margin:5px 0 0;font-size:.82rem;line-height:1.55}.article-highlight-grid{border:1px solid var(--article-line);border-radius:14px;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:22px;display:grid;overflow:hidden}.article-highlight-grid>div{border-right:1px solid var(--article-line);min-width:0;padding:17px 18px}.article-highlight-grid>div:last-child{border-right:0}.article-highlight-grid strong,.article-highlight-grid span{display:block}.article-highlight-grid strong{color:var(--article-accent-dark);letter-spacing:-.02em;font-size:1.02rem;font-weight:850}.article-highlight-grid span{color:var(--article-muted);margin-top:3px;font-size:.72rem;line-height:1.4}.article-keyword-list{flex-wrap:wrap;gap:7px;margin-top:20px;display:flex}.article-keyword-list span{border:1px solid var(--article-line);color:var(--article-muted);border-radius:999px;padding:5px 9px;font-size:.68rem;font-weight:700}.editorial-article-body{padding:0 68px}.forum-blog-page .article-section{border:0;border-bottom:1px solid var(--article-line);margin:0;padding:68px 0;scroll-margin-top:96px}.forum-blog-page .article-section:last-child{border-bottom:0}.article-section-header{grid-template-columns:46px minmax(0,1fr);gap:16px;margin-bottom:36px;display:grid}.article-section-number{background:var(--article-accent-pale);width:42px;height:42px;color:var(--article-accent-dark);font-variant-numeric:tabular-nums;border-radius:50%;justify-content:center;align-items:center;font-size:.75rem;font-weight:850;display:flex}.article-section-kicker{color:var(--article-accent);letter-spacing:.13em;text-transform:uppercase;margin:0 0 6px;font-size:.69rem;font-weight:850;display:block}.forum-blog-page .article-section h2.section-heading{color:var(--article-ink);letter-spacing:-.04em;text-wrap:balance;border:0;justify-content:space-between;align-items:flex-start;gap:12px;margin:0;padding:0;font-size:clamp(1.65rem,3vw,2.35rem);font-weight:820;line-height:1.22;display:flex}.article-section-header p{max-width:720px;color:var(--article-muted);margin:13px 0 0;font-size:.98rem;line-height:1.7}.forum-blog-page .section-anchor-btn{color:color-mix(in srgb, var(--article-muted) 76%, transparent);flex:none;margin-top:1px;padding:7px}.forum-blog-page .section-anchor-btn:hover{background:var(--article-accent-pale);color:var(--article-accent)}.forum-blog-page .copied-tooltip{border-color:var(--article-line);background:var(--article-ink);color:var(--article-paper)}.article-body{gap:22px;min-width:0;display:grid}.article-body>*{min-width:0;max-width:100%}.editorial-paragraph,.forum-blog-page .article-paragraph{color:color-mix(in srgb, var(--article-ink) 88%, var(--article-muted));white-space:normal;margin:0;font-size:1.025rem;line-height:1.9}.editorial-paragraph strong,.article-paragraph strong{color:var(--article-ink);font-weight:800}.math-rendered-container{line-height:inherit}.forum-blog-page .math-inline{color:var(--article-ink);padding:0 .1em}.forum-blog-page .math-block{max-width:100%;color:var(--article-ink);scrollbar-width:thin;font-size:clamp(.92rem,2.2vw,1.08rem);margin:0!important;padding:0!important;overflow:auto hidden!important}.formula-panel{border:1px solid color-mix(in srgb, var(--article-accent) 22%, var(--article-line));background:linear-gradient(135deg, var(--article-accent-pale), transparent 62%), var(--article-soft);border-radius:15px;margin:5px 0;padding:22px 24px 20px;overflow:hidden}.formula-panel figcaption{color:var(--article-accent-dark);letter-spacing:.1em;text-transform:uppercase;margin-bottom:17px;font-size:.69rem;font-weight:850}.formula-panel-expression{align-items:center;min-height:46px;display:grid}.formula-panel p{border-top:1px solid color-mix(in srgb, var(--article-accent) 16%, var(--article-line));color:var(--article-muted);margin:15px 0 0;padding-top:13px;font-size:.78rem;line-height:1.6}.editorial-callout{border:1px solid;border-radius:15px;grid-template-columns:31px minmax(0,1fr);gap:13px;padding:20px 22px;display:grid}.editorial-callout-icon{border-radius:50%;justify-content:center;align-items:center;width:31px;height:31px;display:flex}.editorial-callout h3{letter-spacing:-.01em;margin:2px 0 6px;font-size:.91rem;font-weight:820}.editorial-callout div div{font-size:.86rem;line-height:1.7}.editorial-callout.tone-teal{border-color:color-mix(in srgb, var(--article-accent) 23%, var(--article-line));background:var(--article-accent-pale);color:var(--article-accent-dark)}.editorial-callout.tone-teal .editorial-callout-icon{background:color-mix(in srgb, var(--article-accent) 15%, transparent)}.editorial-callout.tone-amber{border-color:color-mix(in srgb, var(--article-warm) 28%, var(--article-line));background:var(--article-warm-pale);color:var(--article-warm)}.editorial-callout.tone-amber .editorial-callout-icon{background:color-mix(in srgb, var(--article-warm) 14%, transparent)}.editorial-callout.tone-rose{border-color:color-mix(in srgb, var(--article-danger) 28%, var(--article-line));background:var(--article-danger-pale);color:var(--article-danger)}.editorial-callout.tone-rose .editorial-callout-icon{background:color-mix(in srgb, var(--article-danger) 14%, transparent)}.editorial-table-wrap{border:1px solid var(--article-line);scrollbar-width:thin;border-radius:14px;width:100%;max-width:100%;margin:2px 0;overflow-x:auto}.editorial-table{border-collapse:collapse;background:var(--article-paper);width:100%;min-width:640px;font-size:.79rem;line-height:1.55}.editorial-table th,.editorial-table td{border-right:1px solid var(--article-line);border-bottom:1px solid var(--article-line);text-align:left;vertical-align:top;padding:14px 16px}.editorial-table th:last-child,.editorial-table td:last-child{border-right:0}.editorial-table tbody tr:last-child td{border-bottom:0}.editorial-table th{background:var(--article-soft);color:var(--article-ink);letter-spacing:.04em;font-size:.7rem;font-weight:820}.editorial-table td{color:var(--article-muted)}.editorial-table td:first-child{color:var(--article-ink);font-weight:750}.editorial-steps{border:1px solid var(--article-line);background:var(--article-paper);border-radius:15px;padding:22px 24px}.editorial-steps h3{color:var(--article-ink);margin:0 0 17px;font-size:.92rem;font-weight:820}.editorial-steps ol{gap:0;margin:0;padding:0;list-style:none;display:grid}.editorial-steps li{border-top:1px solid var(--article-line);color:var(--article-muted);grid-template-columns:34px minmax(0,1fr);gap:11px;padding:12px 0;font-size:.84rem;line-height:1.65;display:grid}.editorial-steps li:first-child{border-top:0}.step-index{color:var(--article-accent);font-variant-numeric:tabular-nums;font-size:.7rem;font-weight:850}.worked-example{border:1px solid color-mix(in srgb, var(--article-accent) 25%, var(--article-line));background:var(--article-paper);box-shadow:0 9px 24px color-mix(in srgb, var(--article-ink) 5%, transparent);border-radius:16px;overflow:hidden}.worked-example summary{cursor:pointer;background:linear-gradient(90deg, var(--article-accent-pale), transparent 55%), var(--article-paper);grid-template-columns:38px minmax(0,1fr) 34px;align-items:center;gap:13px;padding:18px 20px;list-style:none;display:grid}.worked-example summary::-webkit-details-marker{display:none}.worked-example summary:hover{background:var(--article-accent-pale)}.worked-example-icon,.worked-example-toggle{border-radius:50%;justify-content:center;align-items:center;display:flex}.worked-example-icon{background:color-mix(in srgb, var(--article-accent) 13%, var(--article-paper));width:38px;height:38px;color:var(--article-accent)}.worked-example-toggle{background:var(--article-soft);width:34px;height:34px;color:var(--article-muted);transition:transform .18s,color .18s}.worked-example[open] .worked-example-toggle{color:var(--article-accent);transform:rotate(180deg)}.worked-example-kicker{color:var(--article-accent);letter-spacing:.1em;text-transform:uppercase;margin-bottom:4px;font-size:.63rem;font-weight:850;display:block}.worked-example h3{color:var(--article-ink);letter-spacing:-.012em;margin:0;font-size:.96rem;font-weight:820;line-height:1.4}.worked-example-body{border-top:1px solid var(--article-line);background:color-mix(in srgb, var(--article-soft) 52%, var(--article-paper));gap:17px;padding:21px;display:grid}.worked-example-prompt{background:var(--article-paper);color:var(--article-ink);border-radius:12px;padding:16px 17px;font-size:.85rem;line-height:1.7}.worked-example-prompt>span,.worked-example-result>span{color:var(--article-muted);letter-spacing:.11em;text-transform:uppercase;margin-bottom:6px;font-size:.61rem;font-weight:850;display:block}.worked-example-method,.exam-method{border:1px solid color-mix(in srgb, var(--article-accent) 20%, var(--article-line));background:var(--article-accent-pale);color:var(--article-accent-dark);border-radius:12px;grid-template-columns:24px minmax(0,1fr);gap:10px;padding:14px 16px;font-size:.8rem;line-height:1.65;display:grid}.worked-example-method svg,.exam-method svg{margin-top:2px}.worked-example-method strong,.exam-method strong{color:var(--article-accent-dark);letter-spacing:.07em;text-transform:uppercase;margin-bottom:3px;font-size:.69rem;display:block}.worked-example-solution,.exam-solution{gap:0;margin:0;padding:0;list-style:none;display:grid}.worked-example-solution li,.exam-solution li{border-top:1px solid var(--article-line);color:var(--article-muted);grid-template-columns:34px minmax(0,1fr);gap:12px;padding:14px 0;font-size:.82rem;line-height:1.68;display:grid}.worked-example-solution li:first-child,.exam-solution li:first-child{border-top:0}.solution-step-marker{border:1px solid color-mix(in srgb, var(--article-accent) 24%, var(--article-line));background:var(--article-paper);width:30px;height:30px;color:var(--article-accent);font-variant-numeric:tabular-nums;border-radius:50%;justify-content:center;align-items:center;font-size:.63rem;font-weight:850;display:flex}.worked-example-solution li strong,.exam-solution li strong{color:var(--article-ink);margin:1px 0 4px;font-size:.76rem;display:block}.worked-example-result{border:1px solid color-mix(in srgb, var(--article-accent) 24%, var(--article-line));background:var(--article-accent-pale);color:var(--article-accent-dark);border-radius:12px;padding:15px 17px;font-size:.88rem;font-weight:820}.worked-example-interpretation{border-left:2px solid var(--article-warm);color:var(--article-muted);margin:0;padding-left:14px;font-size:.78rem;line-height:1.65}.worked-example-interpretation strong{color:var(--article-warm)}.economic-diagram{border:1px solid var(--article-line);background:var(--article-paper);box-shadow:0 12px 30px color-mix(in srgb, var(--article-ink) 6%, transparent);border-radius:18px;margin:3px 0;position:relative;overflow:hidden}.economic-diagram-heading{border-bottom:1px solid var(--article-line);background:color-mix(in srgb, var(--article-soft) 55%, var(--article-paper));padding:15px 19px 14px}.economic-diagram-heading>div>span{color:var(--article-accent);letter-spacing:.11em;text-transform:uppercase;margin-bottom:3px;font-size:.61rem;font-weight:850;display:block}.economic-diagram-heading h3{color:var(--article-ink);margin:0;font-size:.91rem;font-weight:810;line-height:1.4}.economic-diagram-canvas{background:linear-gradient(var(--article-line) 1px, transparent 1px), linear-gradient(90deg, var(--article-line) 1px, transparent 1px), var(--article-paper);background-position:-1px -1px;background-size:28px 28px;padding:14px 20px 5px}.economic-diagram svg{width:100%;height:auto;min-height:250px;display:block}.economic-diagram figcaption{border-top:1px solid var(--article-line);color:var(--article-muted);margin:0;padding:14px 19px 17px;font-size:.75rem;line-height:1.6}.diagram-axis{fill:none;stroke:color-mix(in srgb, var(--article-ink) 70%, transparent);stroke-linecap:round;stroke-width:2px}.diagram-line{fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-width:4px}.diagram-line-accent{stroke:var(--article-accent)}.diagram-line-warm{stroke:var(--article-warm)}.diagram-dashed,.diagram-guide{stroke-dasharray:7 7}.diagram-guide{fill:none;stroke:color-mix(in srgb, var(--article-muted) 55%, transparent);stroke-width:1.5px}.diagram-point{fill:var(--article-paper);stroke:var(--article-accent);stroke-width:5px}.diagram-card{stroke:var(--article-line);stroke-width:1.5px}.diagram-card-soft{fill:var(--article-soft)}.diagram-card-accent{fill:var(--article-accent-pale)}.diagram-card-warm{fill:var(--article-warm-pale)}.diagram-flow-line,.diagram-brace{fill:none;stroke:color-mix(in srgb, var(--article-accent) 68%, var(--article-muted));stroke-linecap:round;stroke-width:2.5px}.diagram-brace{stroke-dasharray:5 6}.diagram-arrow-head{fill:var(--article-accent)}.diagram-label-box{fill:var(--article-paper);stroke:var(--article-line);stroke-width:1.5px}.diagram-zone{stroke:var(--article-line);stroke-width:1.5px}.diagram-zone-teal{fill:var(--article-accent-pale)}.diagram-zone-neutral{fill:var(--article-soft)}.diagram-zone-rose{fill:var(--article-danger-pale)}.diagram-card-title,.diagram-small-label,.diagram-axis-label,.diagram-series-label,.diagram-zone-label,.diagram-equation,.diagram-card-value{fill:var(--article-ink);font-family:Inter,ui-sans-serif,system-ui,sans-serif}.diagram-card-title{letter-spacing:.08em;font-size:13px;font-weight:850}.diagram-card-value{font-size:22px;font-weight:780}.diagram-small-label,.diagram-axis-label{fill:var(--article-muted);font-size:13px;font-weight:650}.diagram-series-label{font-size:15px;font-weight:850}.diagram-zone-label{font-size:13px;font-weight:720}.diagram-equation{fill:var(--article-accent-dark);font-size:15px;font-weight:850}.diagram-accent-text{fill:var(--article-accent)}.diagram-warm-text{fill:var(--article-warm)}.source-note{border-left:3px solid var(--article-accent);background:var(--article-soft);border-radius:0 13px 13px 0;grid-template-columns:25px 1fr;gap:13px;padding:18px 20px;display:grid}.source-note svg{color:var(--article-accent);margin-top:2px}.source-note h3{color:var(--article-ink);margin:0 0 5px;font-size:.85rem}.source-note p{color:var(--article-muted);margin:0;font-size:.79rem;line-height:1.65}.dossier-toolbar{z-index:20;border:1px solid color-mix(in srgb, var(--article-accent) 24%, var(--article-line));background:color-mix(in srgb, var(--article-paper) 91%, transparent);box-shadow:0 10px 28px color-mix(in srgb, var(--article-ink) 7%, transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-radius:14px;justify-content:space-between;align-items:center;gap:18px;padding:13px 15px;display:flex;position:sticky;top:78px}.dossier-toolbar>div:first-child span{color:var(--article-accent);letter-spacing:.1em;text-transform:uppercase;margin-bottom:2px;font-size:.59rem;font-weight:850;display:block}.dossier-toolbar>div:first-child strong{color:var(--article-ink);font-size:.77rem;display:block}.dossier-toolbar-actions{gap:7px;display:flex}.dossier-toolbar button{border:1px solid var(--article-line);background:var(--article-soft);color:var(--article-muted);font:inherit;cursor:pointer;border-radius:9px;align-items:center;gap:6px;padding:8px 10px;font-size:.66rem;font-weight:750;display:inline-flex}.dossier-toolbar button:hover{border-color:color-mix(in srgb, var(--article-accent) 35%, var(--article-line));color:var(--article-accent)}.exam-dossier{border:1px solid var(--article-line);background:var(--article-paper);border-radius:16px;overflow:hidden}.exam-dossier.is-featured{border-color:color-mix(in srgb, var(--article-danger) 35%, var(--article-line));box-shadow:0 12px 32px color-mix(in srgb, var(--article-danger) 9%, transparent)}.exam-dossier summary{cursor:pointer;background:var(--article-paper);justify-content:space-between;align-items:center;gap:20px;padding:21px;list-style:none;display:flex}.exam-dossier summary::-webkit-details-marker{display:none}.exam-dossier summary:hover{background:var(--article-soft)}.exam-dossier-meta{color:var(--article-accent);letter-spacing:.09em;text-transform:uppercase;margin-bottom:4px;font-size:.65rem;font-weight:850;display:block}.exam-dossier.is-featured .exam-dossier-meta{color:var(--article-danger)}.exam-dossier-heading h3{color:var(--article-ink);letter-spacing:-.015em;margin:0;font-size:.97rem;font-weight:800;line-height:1.4}.exam-dossier-chips{flex-wrap:wrap;gap:6px;margin-top:9px;display:flex}.exam-dossier-chips span{border:1px solid var(--article-line);background:var(--article-soft);color:var(--article-muted);border-radius:999px;padding:4px 7px;font-size:.59rem;font-weight:720}.exam-dossier-toggle{background:var(--article-soft);width:34px;height:34px;color:var(--article-muted);border-radius:50%;flex:none;justify-content:center;align-items:center;display:flex}.exam-dossier[open] .exam-dossier-toggle{color:var(--article-accent);transform:rotate(180deg)}.exam-dossier-body{border-top:1px solid var(--article-line);background:color-mix(in srgb, var(--article-soft) 55%, var(--article-paper));gap:20px;padding:23px;display:grid}.exam-brief-grid{border:1px solid var(--article-line);background:var(--article-paper);border-radius:12px;grid-template-columns:repeat(2,minmax(0,1fr));display:grid;overflow:hidden}.exam-brief-grid>div{min-width:0;color:var(--article-ink);padding:14px 16px;font-size:.78rem;line-height:1.65}.exam-brief-grid>div+div{border-left:1px solid var(--article-line)}.exam-brief-grid>div>span{color:var(--article-accent);letter-spacing:.1em;text-transform:uppercase;margin-bottom:5px;font-size:.59rem;font-weight:850;display:block}.exam-prompt{background:var(--article-paper);color:var(--article-ink);border-radius:11px;padding:16px 17px;font-size:.84rem;line-height:1.7}.exam-prompt>span,.exam-result>span{color:var(--article-muted);letter-spacing:.11em;text-transform:uppercase;margin-bottom:5px;font-size:.61rem;font-weight:850;display:block}.exam-solution-heading{color:var(--article-accent);letter-spacing:.09em;text-transform:uppercase;align-items:center;gap:8px;font-size:.67rem;font-weight:850;display:flex}.exam-result{border:1px solid color-mix(in srgb, var(--article-accent) 22%, var(--article-line));background:var(--article-accent-pale);color:var(--article-accent-dark);border-radius:11px;padding:16px 17px;font-size:.9rem;font-weight:800}.exam-interpretation{border-left:3px solid var(--article-warm);background:var(--article-warm-pale);color:var(--article-warm);border-radius:0 11px 11px 0;padding:14px 16px;font-size:.79rem;line-height:1.65}.exam-interpretation strong,.exam-check strong{letter-spacing:.07em;text-transform:uppercase;margin-bottom:3px;font-size:.67rem;display:block}.exam-check{border:1px solid color-mix(in srgb, var(--article-accent) 18%, var(--article-line));background:var(--article-paper);color:var(--article-muted);border-radius:11px;grid-template-columns:22px minmax(0,1fr);gap:9px;padding:13px 15px;font-size:.76rem;line-height:1.62;display:grid}.exam-check svg{color:var(--article-accent);margin-top:3px}.exam-check strong{color:var(--article-accent-dark)}.exam-trap{background:var(--article-danger-pale);color:var(--article-danger);border-radius:11px;grid-template-columns:22px minmax(0,1fr);gap:9px;padding:14px 16px;font-size:.78rem;line-height:1.6;display:grid}.exam-trap>svg{margin-top:3px}.exam-trap strong{margin-bottom:2px;display:block}.article-source-panel{background:var(--article-ink);color:var(--article-paper);border-radius:16px;padding:22px}.article-source-heading{align-items:center;gap:9px;margin-bottom:15px;display:flex}.article-source-heading h3{margin:0;font-size:.95rem;font-weight:800}.article-source-list{gap:8px;display:grid}.article-source-list a,.article-source-item{border:1px solid color-mix(in srgb, var(--article-paper) 16%, transparent);color:inherit;border-radius:10px;justify-content:space-between;align-items:center;gap:14px;padding:13px 14px;display:flex}.article-source-list a:hover{border-color:color-mix(in srgb, var(--article-paper) 35%, transparent);background:color-mix(in srgb, var(--article-paper) 7%, transparent)}.article-source-list span,.article-source-list small{display:block}.article-source-list strong{font-size:.8rem}.article-source-list small{color:color-mix(in srgb, var(--article-paper) 68%, transparent);margin-top:3px;font-size:.69rem;line-height:1.45}.article-source-list svg{flex:none}.forum-blog-page .related-section{border-top:1px solid var(--article-line);background:var(--article-soft);margin:0;padding:48px 68px 58px}.related-kicker{color:var(--article-accent);letter-spacing:.12em;text-transform:uppercase;margin-bottom:4px;font-size:.67rem;font-weight:850;display:block}.forum-blog-page .related-section h2{color:var(--article-ink);letter-spacing:-.03em;margin:0;font-size:1.45rem}.forum-blog-page .related-posts{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:20px;display:grid}.forum-blog-page .related-posts a{border:1px solid var(--article-line);background:var(--article-paper);min-height:130px;color:var(--article-ink);border-radius:12px;flex-direction:column;justify-content:space-between;gap:13px;padding:16px;display:flex}.forum-blog-page .related-posts a:hover{border-color:color-mix(in srgb, var(--article-accent) 34%, var(--article-line));transform:translateY(-2px)}.forum-blog-page .related-posts a span{color:var(--article-accent);letter-spacing:.06em;text-transform:uppercase;font-size:.64rem;font-weight:800}.forum-blog-page .related-posts a strong{font-size:.82rem;line-height:1.5}@media (width<=1180px){.forum-blog-page .forum-blog-grid{grid-template-columns:245px minmax(0,1fr);gap:28px}.editorial-article-hero,.editorial-article-body,.forum-blog-page .related-section{padding-left:48px;padding-right:48px}}@media (width<=920px){.forum-blog-page .forum-blog-hero{padding-top:96px}.forum-blog-page .forum-blog-grid{grid-template-columns:1fr}.forum-blog-page .article-toc{max-height:none;padding:17px;position:static}.forum-blog-page .toc-list{grid-template-columns:repeat(2,minmax(0,1fr))}.toc-scope-note,.forum-blog-page .toc-footer{display:none}.forum-blog-page .related-posts{grid-template-columns:1fr}.forum-blog-page .related-posts a{min-height:auto}}@media (width<=640px){.forum-blog-page .forum-blog-hero{padding:82px 0 44px}.forum-blog-page .forum-blog-hero .container{width:calc(100% - 20px);max-width:calc(100% - 20px);margin-left:auto;margin-right:auto}.forum-blog-page .article-toc{display:none}.forum-blog-page .forum-article{border-radius:18px}.editorial-article-hero{padding:31px 23px 29px}.editorial-article-hero:before{width:3px}.forum-blog-page .article-back-link{margin-bottom:25px}.forum-blog-page .forum-article h1.article-title{letter-spacing:-.045em;font-size:clamp(2rem,11vw,3rem)}.article-dek{margin-top:18px;font-size:.94rem}.forum-blog-page .article-byline{gap:9px;display:grid}.article-scope-card{margin-top:25px;padding:16px}.article-highlight-grid{grid-template-columns:1fr}.article-highlight-grid>div{border-right:0;border-bottom:1px solid var(--article-line)}.article-highlight-grid>div:last-child{border-bottom:0}.editorial-article-body{padding:0 23px}.forum-blog-page .article-section{padding:48px 0}.article-section-header{grid-template-columns:1fr;gap:13px;margin-bottom:28px}.article-section-number{width:35px;height:35px;font-size:.67rem}.forum-blog-page .article-section h2.section-heading{font-size:1.55rem}.article-section-header p{font-size:.89rem}.editorial-paragraph,.forum-blog-page .article-paragraph{font-size:.94rem;line-height:1.82}.formula-panel,.editorial-steps,.editorial-callout{padding:17px}.editorial-callout{grid-template-columns:1fr}.editorial-table{min-width:580px}.worked-example summary{grid-template-columns:minmax(0,1fr) 32px;padding:16px}.worked-example-icon{display:none}.worked-example-body{padding:16px}.economic-diagram-heading{padding:15px}.economic-diagram-canvas{padding:10px 6px 2px}.economic-diagram svg{min-height:190px}.dossier-toolbar{align-items:flex-start;padding:12px;top:69px}.dossier-toolbar>div:first-child{display:none}.dossier-toolbar-actions{width:100%}.dossier-toolbar button{flex:1;justify-content:center}.exam-dossier summary,.exam-dossier-body{padding:16px}.exam-brief-grid{grid-template-columns:1fr}.exam-brief-grid>div+div{border-top:1px solid var(--article-line);border-left:0}.exam-dossier-chips{margin-top:8px}.article-source-panel{padding:18px}.article-source-list a,.article-source-item{align-items:flex-start}.forum-blog-page .related-section{padding:36px 23px 42px}}@media (prefers-reduced-motion:reduce){.article-reading-progress span{transition:none!important}}.app-container{flex-direction:column;min-height:100vh;display:flex}.main-content{background:var(--bg-primary);flex-grow:1}
