/*! tailwindcss v4.3.3 | MIT License | https://tailwindcss.com */
@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-border-style:solid;--tw-leading:initial;--tw-font-weight:initial;--tw-tracking:initial;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-outline-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-backdrop-blur:initial;--tw-backdrop-brightness:initial;--tw-backdrop-contrast:initial;--tw-backdrop-grayscale:initial;--tw-backdrop-hue-rotate:initial;--tw-backdrop-invert:initial;--tw-backdrop-opacity:initial;--tw-backdrop-saturate:initial;--tw-backdrop-sepia:initial;--tw-ease:initial;--tw-translate-x:0;--tw-translate-y:0;--tw-translate-z:0}}}@layer theme{:root,:host{--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--container-md:28rem;--container-5xl:64rem;--text-xs:.75rem;--text-sm:.875rem;--text-sm--line-height:calc(1.25 / .875);--text-base:1rem;--text-base--line-height:calc(1.5 / 1);--text-lg:1.125rem;--text-xl:1.25rem;--text-2xl:1.5rem;--font-weight-semibold:600;--font-weight-bold:700;--font-weight-extrabold:800;--font-weight-black:900;--tracking-tight:-.025em;--leading-relaxed:1.625;--radius-sm:.25rem;--radius-md:.375rem;--radius-lg:.5rem;--shadow-sm:0 1px 3px 0 #0000001a, 0 1px 2px -1px #0000001a;--shadow-xl:0 20px 25px -5px #0000001a, 0 8px 10px -6px #0000001a;--ease-out:cubic-bezier(0, 0, .2, 1);--ease-in-out:cubic-bezier(.4, 0, .2, 1);--animate-spin:spin 1s linear infinite;--animate-pulse:pulse 2s cubic-bezier(.4, 0, .6, 1) infinite;--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--color-wash-a:#dff0fb;--color-wash-b:#fde6ec;--text-caption:.8125rem;--text-body-sm:.9375rem;--text-title-sm:1.1875rem;--text-title:1.5rem;--radius-card:20px;--radius-field:16px;--radius-btn:14px;--radius-chip:12px;--shadow-card:0 10px 30px #2a2f4514;--shadow-card-sm:0 4px 14px #2a2f450f;--font-display:"Nunito", "Poppins", ui-rounded, "Segoe UI", system-ui, -apple-system, sans-serif}}@layer base{*{box-sizing:border-box;margin:0;padding:0}button,[type=button],[type=reset],[type=submit]{border:0 solid}body{font-family:var(--font-body);background-color:var(--bg-main);background-image:var(--page-wash);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100dvh;transition:background-color var(--transition-normal), color var(--transition-normal);background-attachment:fixed;overflow-x:hidden}#root{flex-direction:column;min-height:100dvh;display:flex}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-main)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}}@layer legacy{.app-container{flex-direction:column;height:100vh;display:flex;overflow:hidden}.app-header{z-index:100;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid var(--border-color);background:#ffffffd9;padding:0 24px;position:sticky;top:0}.header-content{justify-content:space-between;align-items:center;width:100%;max-width:1280px;height:72px;margin:0 auto;display:flex}.user-profile-header,.logo-section{align-items:center;gap:12px;display:flex}.logo-text{font-family:var(--font-heading);letter-spacing:-.5px;background:linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-info) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:22px;font-weight:700;line-height:1.1}.logo-subtext{font-family:var(--font-body);color:var(--text-secondary);margin-top:-2px;font-size:11px;font-weight:500}.app-nav{gap:8px;display:flex}.nav-tab-btn{color:var(--text-secondary);font-family:var(--font-body);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;border-radius:8px;align-items:center;gap:8px;padding:8px 16px;font-size:14px;font-weight:600;display:flex}.nav-tab-btn:hover{color:var(--text-primary);background:#0000000a}.nav-tab-btn.active{color:var(--text-primary);border:1px solid var(--border-color);background:#fff;box-shadow:0 2px 6px #0000000f}.main-content{animation:fadeIn var(--transition-normal) forwards;box-sizing:border-box;overflow-anchor:none;flex:1;height:100%;padding:32px 24px;overflow-y:auto}.dashboard-grid{grid-template-columns:1.5fr 1fr;gap:24px;display:grid}@media (width<=900px){.dashboard-grid{grid-template-columns:1fr}}.welcome-card{background:linear-gradient(135deg, #46caf01a 0%, #f6708e12 100%), var(--bg-card);color:var(--text-primary);border:1px solid var(--border-color);flex-direction:column;justify-content:center;padding:40px;display:flex}.welcome-card h2{font-family:var(--font-display,var(--font-heading));letter-spacing:-.4px;color:var(--text-primary);margin-bottom:12px;font-size:32px;font-weight:900;line-height:1.2}.welcome-card p{color:var(--text-secondary);margin-bottom:24px;font-size:15px;line-height:1.6}.welcome-card svg{color:var(--accent-primary-text)}.stats-card{background:var(--bg-card);flex-direction:column;gap:24px;padding:32px;display:flex}.stats-card h3{font-family:var(--font-heading);color:var(--text-primary);font-size:20px;font-weight:600}.stats-grid{grid-template-columns:repeat(2,1fr);gap:16px;display:grid}.stat-item{border:1px solid var(--border-color);background:#f8fafc;border-radius:12px;flex-direction:column;gap:6px;padding:16px;display:flex}.stat-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;font-size:12px}.stat-value{font-family:var(--font-heading);color:var(--text-primary);font-size:24px;font-weight:700}.xp-progress-container{flex-direction:column;gap:8px;margin-top:8px;display:flex}.xp-label-row{color:var(--text-secondary);justify-content:space-between;font-size:13px;display:flex}.progress-bar-bg{background:#e2e8f0;border-radius:9999px;width:100%;height:8px;overflow:hidden}.progress-bar-fill{background:linear-gradient(90deg, var(--accent-primary) 0%, var(--accent-info) 100%);border-radius:9999px;height:100%;transition:width .6s cubic-bezier(.4,0,.2,1)}.action-cards{grid-column:1/-1;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px;display:grid}@media (width<=900px){.action-cards{grid-template-columns:1fr}}.action-card{cursor:pointer;flex-direction:column;gap:16px;padding:24px;display:flex}.action-icon{border:1px solid var(--border-color);width:48px;height:48px;color:var(--accent-info);transition:all var(--transition-fast);background:#f8fafc;border-radius:12px;justify-content:center;align-items:center;display:flex}.action-card:hover .action-icon{background:var(--accent-primary);color:var(--on-accent);transform:scale(1.05)}.action-card h4{font-family:var(--font-heading);color:var(--text-primary);font-size:18px}.action-card p{color:var(--text-secondary);font-size:14px;line-height:1.5}.solve-workspace{flex-direction:column;gap:24px;display:flex}.input-card{flex-direction:column;gap:16px;padding:24px;display:flex}.input-header-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.input-header-title{font-family:var(--font-heading);color:var(--text-primary);font-size:20px;font-weight:600}.text-area-wrapper{width:100%;position:relative}.math-textarea{resize:vertical;width:100%;min-height:80px;color:var(--text-primary);font-family:var(--font-body);background:0 0;border:none;outline:none;margin:0;padding:0;font-size:16px}.textarea-wrapper{border:1px solid var(--border-color);transition:border-color var(--transition-fast), box-shadow var(--transition-fast);background:#fff;border-radius:12px;flex-direction:column;gap:8px;padding:12px 16px 8px;display:flex}.textarea-wrapper.focused{border-color:var(--accent-primary);box-shadow:0 0 0 3px #4361ee1a}.textarea-footer{border-top:1px solid #f1f5f9;justify-content:space-between;align-items:center;margin-top:4px;padding-top:8px;display:flex}.input-actions-left{gap:8px;display:flex}.input-actions-right-embedded{align-items:center;gap:8px;display:flex}.btn-small{height:32px!important;box-shadow:none!important;border-radius:8px!important;gap:6px!important;padding:6px 12px!important;font-size:13px!important}.btn-small:hover{box-shadow:none!important}.control-btn{border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;width:34px;height:34px;transition:all var(--transition-fast);background:#f1f5f9;border-radius:8px;justify-content:center;align-items:center;display:flex}.control-btn:hover{color:var(--text-primary);background:#e2e8f0}.control-btn.active{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.example-pills{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.example-pills-label{color:var(--text-secondary);font-size:12px;font-weight:600}.example-pill{border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;white-space:nowrap;transition:all var(--transition-fast);background:#f1f5f9;border-radius:9999px;padding:5px 12px;font-size:12px;font-weight:500}.example-pill:hover:not(:disabled){background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.example-pill:disabled{opacity:.5;cursor:not-allowed}.expand-collapse-toggle{border:1px solid var(--border-color);background:#f1f5f9;border-radius:8px;gap:2px;padding:2px;display:inline-flex}.ec-toggle-segment{color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;border-radius:6px;padding:5px 12px;font-size:12px;font-weight:600}.ec-toggle-segment.active{background:var(--accent-primary);color:#fff}.textarea-actions{gap:8px;display:flex;position:absolute;bottom:12px;right:12px}.textarea-icon-btn{border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;width:36px;height:36px;transition:all var(--transition-fast);background:#f1f5f9;border-radius:8px;justify-content:center;align-items:center;display:flex}.textarea-icon-btn:hover{color:var(--text-primary);background:#e2e8f0}.textarea-icon-btn.recording{background:var(--accent-error);color:#fff;animation:1.2s infinite voicePulse}.image-upload-zone{border:2px dashed var(--border-color);text-align:center;cursor:pointer;transition:all var(--transition-fast);background:#ffffff03;border-radius:12px;flex-direction:column;align-items:center;gap:8px;padding:24px;display:flex}.image-upload-zone:hover{border-color:var(--accent-primary);background:#6366f105}.image-upload-zone.dragging{border-color:var(--accent-primary);background:#6366f10d;transform:scale(1.01)}.mobile-upload-container{border:2px dashed var(--border-color);background:#ffffff03;border-radius:12px;flex-direction:column;align-items:center;gap:12px;width:100%;padding:20px 16px;display:flex}.mobile-upload-title{color:var(--text-secondary);font-size:14px;font-weight:500}.mobile-upload-buttons{gap:12px;width:100%;display:flex}.btn-mobile-upload{min-width:0;font-family:var(--font-heading);cursor:pointer;box-shadow:var(--shadow-sm);transition:transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);border-radius:12px;flex:1;justify-content:center;align-items:center;gap:8px;padding:12px 16px;font-size:14px;font-weight:600;display:inline-flex}.btn-mobile-camera{background:linear-gradient(135deg, var(--accent-primary) 0%, #28a0c5 100%);color:var(--on-accent);border:none;box-shadow:0 4px 12px #4bcdf033}.btn-mobile-camera:hover{filter:brightness(1.05);transform:translateY(-1px);box-shadow:0 6px 16px #4bcdf059}.btn-mobile-camera:active{transform:translateY(1px)}.btn-mobile-gallery{color:var(--text-primary);border:1px solid var(--border-color);background:#fff}.btn-mobile-gallery:hover{background:var(--bg-main);transform:translateY(-1px)}.btn-mobile-gallery:active{transform:translateY(1px)}.image-preview-container{border:1px solid var(--border-color);border-radius:8px;max-width:260px;margin-top:8px;position:relative;overflow:hidden}.image-preview{width:100%;height:auto;display:block}.remove-image-btn{color:#fff;cursor:pointer;background:#ef4444e6;border:none;border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;font-weight:700;display:flex;position:absolute;top:8px;right:8px}.math-keyboard-container{border:1px solid var(--border-color);background:#f8fafc;border-radius:12px;flex-direction:column;gap:10px;padding:12px;display:flex}.math-keyboard-tabs{border-bottom:1px solid var(--border-color);gap:6px;padding-bottom:8px;display:flex}.math-keyboard-tab-btn{color:var(--text-secondary);font-family:var(--font-body);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:4px 10px;font-size:12px;font-weight:600}.math-keyboard-tab-btn.active{color:var(--text-primary);background:#e2e8f0}.math-keyboard-grid{grid-template-columns:repeat(auto-fill,minmax(50px,1fr));gap:6px;display:grid}.math-keyboard-key{border:1px solid var(--border-color);color:var(--text-primary);font-family:var(--mono);cursor:pointer;transition:background var(--transition-fast);background:#fff;border-radius:6px;padding:8px 4px;font-size:13px}.math-keyboard-key:hover{background:#f1f5f9}.action-submit-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.ocr-badge{color:var(--accent-info);background:#06b6d41a;border:1px solid #06b6d433;border-radius:8px;align-items:center;gap:6px;padding:6px 12px;font-size:13px;display:inline-flex}.solution-grid{flex-direction:column;align-items:stretch;gap:32px;display:flex}.solution-vertical-layout{flex-direction:column;gap:32px;max-width:100%;display:flex}.main-layout-wrapper{flex:1;width:100%;display:flex;position:relative;overflow:hidden}.app-sidebar{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-right:1px solid var(--border-color);z-index:90;box-sizing:border-box;background:#ffffffd9;flex-direction:column;gap:12px;width:260px;height:100%;padding:24px 16px;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;overflow-y:auto}.app-sidebar.collapsed{align-items:center;width:80px;padding:24px 12px}.app-sidebar .nav-tab-btn{justify-content:flex-start;width:100%;padding:12px 16px}.app-sidebar.collapsed .nav-tab-btn span{opacity:0;width:0;display:none}.app-sidebar.collapsed .nav-tab-btn{border-radius:12px;justify-content:center;width:48px;height:48px;padding:0}.sidebar-toggle-btn{border:1px solid var(--border-color);cursor:pointer;width:38px;height:38px;color:var(--text-primary);transition:all var(--transition-fast);background:0 0;border-radius:8px;justify-content:center;align-items:center;display:flex}.sidebar-toggle-btn:hover{border-color:var(--text-secondary);background:#0000000a}.canvas-bottom-wrapper{background:var(--bg-card);border:1px solid var(--border-color);box-sizing:border-box;border-radius:16px;flex-direction:column;gap:16px;width:100%;padding:24px;display:flex;box-shadow:0 4px 20px #00000008}.canvas-header-bar{border-bottom:1px solid var(--border-color);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px;padding-bottom:16px;display:flex}.canvas-header-bar h3{font-family:var(--font-heading);color:var(--text-primary);margin:0;font-size:18px;font-weight:700}.katex-display{max-width:100%;overflow:auto hidden}@media (width<=767.98px){.app-sidebar{z-index:150;width:260px;height:100%;position:absolute;top:0;left:-260px;box-shadow:4px 0 24px #00000026}.app-sidebar.open{left:0}.app-sidebar.collapsed{left:-260px}.app-sidebar.mobile-open{left:0!important}.mobile-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:140;background:#0006;animation:.2s ease-out fadeIn;position:absolute;inset:0}}.solution-steps-panel{flex-direction:column;gap:16px;min-width:0;display:flex}.problem-header-card{border-left:4px solid var(--accent-primary);padding:20px}.problem-header-card h3{text-transform:uppercase;color:var(--text-secondary);letter-spacing:.5px;margin-bottom:8px;font-size:14px}.problem-text-latex{color:var(--text-primary);width:100%;min-width:0;font-size:16px;line-height:1.5;overflow-x:auto}.step-card{background:var(--bg-card);border:1px solid var(--border-color);transition:all var(--transition-fast);border-radius:12px;min-width:0;overflow:hidden}.step-card.active{border-color:var(--accent-info);box-shadow:0 4px 15px #06b6d41a}.step-card-header{cursor:pointer;-webkit-user-select:none;user-select:none;background:#ffffff03;justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.step-card-header:hover{background:#ffffff08}.step-header-left{flex:1;align-items:center;gap:12px;min-width:0;display:flex}.step-index-badge{width:24px;height:24px;color:var(--text-secondary);font-family:var(--font-heading);background:#e2e8f0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:12px;font-weight:700;display:flex}.step-card.active .step-index-badge{background:var(--accent-info);color:#fff}.step-title{font-family:var(--font-heading);color:var(--text-primary);font-size:16px;font-weight:600}.step-toggle-icon{color:var(--text-secondary);transition:transform var(--transition-fast);flex-shrink:0}.step-card.open .step-toggle-icon{transform:rotate(180deg)}.step-card-body{border-top:1px solid var(--border-color);background:#f8fafc;flex-direction:column;gap:20px;min-width:0;padding:24px;display:flex}.step-latex-box{white-space:pre-wrap;background:#0f172ae6;border:1px solid #ffffff08;border-radius:12px;width:100%;min-width:0;padding:24px;font-size:16px;line-height:2;overflow-x:auto;box-shadow:inset 0 2px 4px #0003;color:#f8fafc!important}.step-latex-box *{color:#f8fafc!important}.step-explanation-text{color:var(--text-primary);font-size:15px;line-height:1.7}.final-answer-card{border:1px solid #0ab98133;border-left:4px solid var(--accent-success);background:linear-gradient(135deg,#10b9810d 0%,#06b6d40d 100%);padding:24px}.final-answer-title{font-family:var(--font-heading);color:var(--accent-success);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px;font-size:14px}.final-answer-text{font-family:var(--font-heading);color:var(--text-primary);font-size:20px;font-weight:700}.key-points-section{flex-direction:column;gap:10px;margin-top:8px;display:flex}.key-point-chip{border:1px solid var(--border-color);color:var(--text-secondary);background:#f8fafc;border-radius:8px;align-items:center;gap:10px;padding:10px 16px;font-size:13px;display:flex}.canvas-sticky-wrapper{flex-direction:column;gap:16px;display:flex;position:relative;top:0}.canvas-caption{color:var(--text-muted);text-align:center;font-size:13px}.derivation-board-wrapper{flex-direction:column;gap:10px;display:flex}.derivation-board-header{font-family:var(--font-heading);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;display:flex}.derivation-board-title{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.4px;font-size:13px;font-weight:600}.derivation-board-progress{color:var(--text-muted);font-family:monospace;font-size:12px}@media (width<=480px){.derivation-board-header{gap:4px}.derivation-board-title{letter-spacing:.2px;font-size:11.5px}.derivation-board-progress{font-size:11px}}.derivation-board{background:#0f172ae6;border:1px solid #ffffff0f;border-radius:12px;flex-direction:column;gap:12px;max-height:70vh;padding:16px;display:flex;position:relative;overflow-y:auto}.derivation-board-empty{color:#94a3b8;text-align:center;padding:32px 16px;font-size:14px}.derivation-line{cursor:pointer;transition:opacity var(--transition-normal), transform var(--transition-normal), border-color var(--transition-normal), background var(--transition-normal);border:1px solid #0000;border-radius:8px;padding:12px 14px}.derivation-line.past{opacity:.5;transform:scale(.97)}.derivation-line.active{opacity:1;border-color:var(--accent-info);background:#ffffff0a;box-shadow:0 4px 16px #ff6b812e}.derivation-line.future{opacity:.18}.derivation-line:hover{opacity:.85}.derivation-line.active:hover{opacity:1}.derivation-line-label{font-family:var(--font-heading);color:#cbd5e1;align-items:center;gap:8px;margin-bottom:8px;font-size:12px;display:flex}.derivation-line-num{color:#e2e8f0;background:#ffffff14;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:20px;height:20px;font-size:11px;font-weight:700;display:inline-flex}.derivation-line.active .derivation-line-num{background:var(--accent-info);color:#fff}.derivation-line-title{line-height:1.3}.derivation-line-math{color:#f8fafc;text-align:center;min-width:0;font-size:19px;overflow:auto hidden}.derivation-line-math::-webkit-scrollbar{height:4px}.derivation-line-math::-webkit-scrollbar-track{background:0 0}.derivation-line-math::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:2px}.derivation-line-math-inner{display:inline-block}.derivation-line-math *{color:#f8fafc!important}.derivation-line.past .derivation-line-math{font-size:16px}@media (prefers-reduced-motion:reduce){.derivation-line{transition:none}}@media (width<=1000px){.derivation-board{max-height:60vh}.derivation-line-math{font-size:17px}.derivation-line.past .derivation-line-math{font-size:14px}}.citations-card{margin-top:8px;padding:20px}.citations-card h4{font-family:var(--font-heading);color:var(--text-primary);align-items:center;gap:8px;margin-bottom:12px;font-size:16px;display:flex}.citations-list{flex-direction:column;gap:12px;display:flex}.citation-item{border:1px solid var(--border-color);background:#f8fafc;border-radius:8px;padding:12px}.citation-header{color:var(--accent-info);margin-bottom:4px;font-size:12px;font-weight:700}.citation-content{color:var(--text-secondary);white-space:pre-line;font-size:13px;line-height:1.5}.loading-container{flex-direction:column;justify-content:center;align-items:center;gap:20px;padding:60px 20px;display:flex}.loading-spinner-glow{border:4px solid var(--border-color);border-top-color:var(--accent-primary);border-radius:50%;width:64px;height:64px;animation:1s linear infinite spin;position:relative;box-shadow:0 0 15px #6366f133}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.loading-text{font-family:var(--font-heading);color:var(--text-primary);text-align:center;font-size:18px}.loading-subtext{color:var(--text-secondary);text-align:center;font-size:14px}.rag-loading-pill{color:var(--accent-success);background:#10b98114;border:1px solid #10b98133;border-radius:20px;align-self:center;align-items:center;gap:8px;margin-bottom:16px;padding:8px 16px;font-size:13px;animation:2s infinite pulse-glow;display:flex}.quiz-container{flex-direction:column;gap:24px;max-width:720px;margin:0 auto;display:flex}.quiz-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.quiz-question-card{padding:32px}.quiz-question-title{text-transform:uppercase;color:var(--accent-info);letter-spacing:.5px;margin-bottom:12px;font-size:13px}.quiz-question-latex{color:var(--text-primary);margin-bottom:8px;font-size:20px;line-height:1.5;overflow-x:auto}.quiz-options-list{flex-direction:column;gap:12px;margin-top:16px;display:flex}.quiz-option-btn{border:1px solid var(--border-color);color:var(--text-primary);text-align:left;font-family:var(--font-body);cursor:pointer;transition:all var(--transition-fast);background:#fff;border-radius:12px;justify-content:flex-start;align-items:center;gap:14px;padding:16px 20px;font-size:15px;display:flex}.quiz-option-btn *{pointer-events:none}.quiz-option-btn .option-text{text-align:left;flex:1}.quiz-option-btn:hover:not(:disabled){border-color:var(--text-muted);background:#f8fafc}.quiz-option-btn.correct{border-color:var(--accent-success);color:var(--text-primary);background:#10b9811f}.quiz-option-btn.incorrect{border-color:var(--accent-error);color:var(--text-primary);background:#ef44441f}.quiz-option-btn:disabled{cursor:not-allowed;opacity:.8}.quiz-feedback-card{text-align:center;flex-direction:column;align-items:center;gap:12px;padding:24px;display:flex}.quiz-feedback-title{font-family:var(--font-heading);font-size:20px;font-weight:700}.quiz-feedback-title.correct{color:var(--accent-success)}.quiz-feedback-title.incorrect{color:var(--accent-error)}.quiz-feedback-text{color:var(--text-secondary);text-align:left;width:100%;font-size:14.5px;line-height:1.6}.leaderboard-container{flex-direction:column;gap:24px;max-width:640px;margin:0 auto;display:flex}.leaderboard-list{flex-direction:column;gap:8px;display:flex}.leaderboard-item{background:var(--bg-card);border:1px solid var(--border-color);transition:transform var(--transition-fast);border-radius:12px;justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.leaderboard-item:hover{transform:translateY(-1px)}.leaderboard-item.current-user{border-color:var(--accent-primary);background:#6366f10d}.leaderboard-rank-col{align-items:center;gap:16px;display:flex}.leaderboard-rank-badge{width:28px;height:28px;font-family:var(--font-heading);color:var(--text-secondary);background:#f1f5f9;border-radius:50%;justify-content:center;align-items:center;font-size:13px;font-weight:700;display:flex}.leaderboard-item:first-child .leaderboard-rank-badge{color:#0f172a;background:#f59e0b}.leaderboard-item:nth-child(2) .leaderboard-rank-badge{color:#0f172a;background:#94a3b8}.leaderboard-item:nth-child(3) .leaderboard-rank-badge{color:#fff;background:#b45309}.leaderboard-avatar{color:#fff;background:#334155;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;font-size:14px;font-weight:700;display:flex}.leaderboard-name{color:var(--text-primary);font-weight:600}.leaderboard-xp{font-family:var(--font-heading);color:var(--accent-info);font-weight:700}.history-container{flex-direction:column;gap:16px;max-width:800px;margin:0 auto;display:flex}.history-card{cursor:pointer;padding:20px}.history-card-header{color:var(--text-secondary);justify-content:space-between;margin-bottom:8px;font-size:12px;display:flex}.history-card-query{font-family:var(--font-heading);color:var(--text-primary);margin-bottom:12px;font-size:16px;font-weight:600;line-height:1.4}.history-card-footer{justify-content:space-between;align-items:center;display:flex}.history-card-badges{gap:6px;display:flex}.history-card-badge{color:var(--text-secondary);background:#ffffff0d;border-radius:4px;padding:2px 8px;font-size:11px}.history-empty-state{text-align:center;color:var(--text-secondary);flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:60px 20px;display:flex}.login-overlay{z-index:1000;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0f172a66;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.login-card{text-align:center;border:1px solid var(--border-color);width:100%;max-width:420px;box-shadow:var(--shadow-xl);background:#fff;border-radius:24px;flex-direction:column;gap:24px;padding:40px 32px;display:flex}.login-logo{font-family:var(--font-heading);-webkit-text-fill-color:transparent;background:linear-gradient(135deg,#4bcdf0 0%,#ff6b81 100%);-webkit-background-clip:text;font-size:36px;font-weight:700}.login-form{text-align:left;flex-direction:column;gap:16px;display:flex}.form-group{flex-direction:column;gap:6px;display:flex}.form-group-row{gap:16px;width:100%;display:flex}@media (width<=767.98px){.form-group-row{flex-direction:column;gap:16px}}.form-group label{color:var(--text-secondary);font-size:13px;font-weight:600}.form-input{border:1px solid var(--border-color);color:var(--text-primary);font-family:var(--font-body);transition:border-color var(--transition-fast);box-sizing:border-box;background:#fff;border-radius:8px;outline:none;width:100%;max-width:100%;padding:10px 14px;font-size:14px}.form-input:focus{border-color:var(--accent-primary)}.login-divider{color:var(--text-muted);align-items:center;gap:12px;font-size:12px;display:flex}.login-divider:before,.login-divider:after{content:"";background:var(--border-color);flex:1;height:1px}.math-verifier-container{align-items:center;display:inline-flex}.btn-verify{color:#1a7f9d;cursor:pointer;transition:all var(--transition-fast) ease;background:#4bcdf01a;border:1px solid #4bcdf040;border-radius:20px;align-items:center;gap:6px;padding:5px 12px;font-size:11px;font-weight:700;display:inline-flex}.btn-verify:hover{border-color:var(--accent-primary);color:#0e5d74;background:#4bcdf033;transform:translateY(-1px)}.verifier-status-text{color:var(--text-secondary);align-items:center;gap:6px;font-size:11px;font-weight:500;display:inline-flex}.verifier-result-badge{border-radius:20px;align-items:center;gap:5px;padding:4px 10px;font-size:11px;font-weight:700;display:inline-flex}.verifier-result-badge.valid{color:#047857;background:#10b9811a;border:1px solid #10b98133}.verifier-result-badge.invalid{color:#b91c1c;background:#ef44441a;border:1px solid #ef444433}.verifier-reason-box{animation:fadeIn var(--transition-fast) forwards;border-radius:8px;margin-top:14px;padding:12px 16px;font-size:13px;line-height:1.5}.verifier-reason-box.valid{color:#065f46;background:#10b9810d;border:1px solid #10b98133}.verifier-reason-box.invalid{color:#991b1b;background:#ef44440d;border:1px solid #ef444433}.verifier-header{text-transform:uppercase;letter-spacing:.5px;opacity:.8;margin-bottom:4px;font-size:10px;font-weight:700}.verifier-reason{font-weight:400}@media (width<=1000px){.solution-grid{flex-direction:column;grid-template-columns:1fr;width:100%;min-width:0;max-width:100%;display:flex}.canvas-sticky-wrapper{box-sizing:border-box;order:-1;width:100%;min-width:0;max-width:100%;margin-bottom:20px;position:relative;top:0}.solution-steps-panel{box-sizing:border-box;order:1;width:100%;min-width:0;max-width:100%}.step-card,.step-card-body,.problem-header-card,.final-answer-card,.quiz-question-card,.glass-card{box-sizing:border-box!important;width:100%!important;min-width:0!important;max-width:100%!important}.step-latex-box,.final-answer-text{box-sizing:border-box!important;width:100%!important;min-width:0!important;max-width:100%!important;overflow-x:auto!important}mjx-container,.katex-display{font-size:92%!important}.final-answer-text mjx-container,.final-answer-text .katex-display{font-size:85%!important}.main-content{min-width:0!important;max-width:100%!important}}@media (width<=767.98px){.header-content{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;height:auto;padding:10px 16px;display:flex}.logo-text{font-size:18px}.user-profile-header{display:none!important}.app-header{padding:0}.app-nav{scrollbar-width:thin;scrollbar-color:var(--accent-primary) #0000000d}.app-nav::-webkit-scrollbar{height:4px!important;display:block!important}.app-nav::-webkit-scrollbar-track{background:#0000000d!important;border-radius:2px!important}.app-nav::-webkit-scrollbar-thumb{background:var(--accent-primary)!important;border-radius:2px!important}.nav-tab-btn{flex-shrink:0;padding:8px 12px;font-size:13px}.main-content{padding:16px 12px}.input-card{padding:16px!important}.input-header-row{flex-direction:column!important;align-items:stretch!important;gap:8px!important;width:100%!important}.neutral-pill-container{scrollbar-width:thin;scrollbar-color:var(--accent-primary) #0000000d;-webkit-overflow-scrolling:touch;white-space:nowrap;border-radius:9999px;max-width:100%;display:flex;overflow-x:auto;justify-content:flex-start!important;width:100%!important}.toggle-pill-selector{scrollbar-width:none;-ms-overflow-style:none;flex-wrap:nowrap!important;justify-content:flex-start!important;width:100%!important;max-width:100%!important;display:flex!important;overflow-x:auto!important}.toggle-pill-selector::-webkit-scrollbar{display:none!important}.toggle-pill-selector .pill-btn{flex-shrink:0!important}.neutral-pill-container::-webkit-scrollbar{height:4px!important;display:block!important}.neutral-pill-container::-webkit-scrollbar-track{background:#0000000d!important;border-radius:2px!important}.neutral-pill-container::-webkit-scrollbar-thumb{background:var(--accent-primary)!important;border-radius:2px!important}.neutral-pill-item{flex-shrink:0}.katex-display,mjx-container[display=true],.final-answer-text{scrollbar-width:thin;scrollbar-color:var(--accent-primary) #0000000d;max-width:100%!important;padding-bottom:6px!important;overflow:auto hidden!important}.step-latex-box{scrollbar-width:thin;scrollbar-color:var(--accent-primary) #0000000d;max-width:100%!important;padding:16px 16px 10px!important;font-size:14.5px!important;overflow:auto hidden!important}.katex-display::-webkit-scrollbar{height:4px!important;display:block!important}.step-latex-box::-webkit-scrollbar{height:4px!important;display:block!important}mjx-container[display=true]::-webkit-scrollbar{height:4px!important;display:block!important}.final-answer-text::-webkit-scrollbar{height:4px!important;display:block!important}.katex-display::-webkit-scrollbar-track{background:#0000000d!important;border-radius:2px!important}.step-latex-box::-webkit-scrollbar-track{background:#0000000d!important;border-radius:2px!important}mjx-container[display=true]::-webkit-scrollbar-track{background:#0000000d!important;border-radius:2px!important}.final-answer-text::-webkit-scrollbar-track{background:#0000000d!important;border-radius:2px!important}.katex-display::-webkit-scrollbar-thumb{background:var(--accent-primary)!important;border-radius:2px!important}.step-latex-box::-webkit-scrollbar-thumb{background:var(--accent-primary)!important;border-radius:2px!important}mjx-container[display=true]::-webkit-scrollbar-thumb{background:var(--accent-primary)!important;border-radius:2px!important}.final-answer-text::-webkit-scrollbar-thumb{background:var(--accent-primary)!important;border-radius:2px!important}}math-field::part(menu-toggle){display:none!important}@media (width<=480px){.stats-grid{grid-template-columns:1fr;gap:12px}.welcome-card{text-align:center;align-items:center;padding:24px 16px}.welcome-card div{flex-direction:column;gap:8px;width:100%}.welcome-card div button{justify-content:center;width:100%}.stats-card{padding:24px 16px}.mobile-upload-buttons{gap:8px!important}.btn-mobile-upload{padding:10px 8px!important;font-size:13px!important}.action-submit-row{flex-direction:column;align-items:stretch}.action-submit-row button{justify-content:center;width:100%}}.mobile-menu-toggle,.collapsible-menu-bar{display:none}@media (width<=767.98px){.sidebar-toggle-btn,.app-sidebar{display:none!important}.collapsible-menu-bar{opacity:0;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:0px solid var(--border-color);box-sizing:border-box;z-index:95;background:#fffffff2;width:100%;max-height:0;transition:all .3s cubic-bezier(.4,0,.2,1);display:block;position:relative;overflow:hidden}.collapsible-menu-bar.open{-webkit-overflow-scrolling:touch;opacity:1;border-bottom:1px solid var(--border-color);max-height:80dvh;padding:12px 16px;overflow-y:auto}.menu-bar-links{flex-direction:column;gap:8px;width:100%;display:flex}.menu-bar-btn{width:100%;color:var(--text-secondary);font-family:var(--font-body);cursor:pointer;transition:all var(--transition-fast);box-sizing:border-box;background:0 0;border:none;border-radius:8px;align-items:center;gap:10px;padding:10px 14px;font-size:14px;font-weight:600;display:flex}.menu-bar-btn:hover{color:var(--text-primary);background:#0000000a}.menu-bar-btn.active{color:var(--text-primary);border:1px solid var(--border-color);background:#fff;box-shadow:0 2px 6px #0000000f}.mobile-menu-toggle{border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;width:38px;height:38px;transition:all var(--transition-fast);background:0 0;border-radius:8px;justify-content:center;align-items:center;display:flex}.mobile-menu-toggle:hover{border-color:var(--text-secondary);background:#0000000a}.header-content{flex-wrap:nowrap!important;justify-content:space-between!important;align-items:center!important;gap:12px!important;height:72px!important;display:flex!important}.app-container,.main-layout-wrapper{height:auto!important;overflow:visible!important}.main-content{height:auto!important;padding:16px 12px!important;overflow-y:visible!important}}.featured-lessons-section{flex-direction:column;grid-column:1/-1;gap:16px;margin-top:24px;display:flex}.featured-lessons-title{font-family:var(--font-heading);color:var(--text-primary);align-items:center;gap:8px;font-size:20px;font-weight:700;display:flex}.featured-lessons-grid{grid-template-columns:repeat(3,1fr);gap:24px;display:grid}@media (width<=900px){.featured-lessons-grid{grid-template-columns:1fr;gap:16px}}.featured-lesson-card{cursor:pointer;transition:all var(--transition-normal);background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;flex-direction:column;gap:12px;padding:24px;display:flex;position:relative;overflow:hidden;box-shadow:0 4px 12px #00000005}.featured-lesson-card:hover{border-color:var(--accent-primary);transform:translateY(-4px);box-shadow:0 12px 24px #6366f114}.featured-lesson-category{text-transform:uppercase;letter-spacing:.5px;color:var(--accent-primary-text);background:#6366f114;border-radius:6px;align-self:flex-start;padding:4px 8px;font-size:11px;font-weight:700}.featured-lesson-card h4{font-family:var(--font-heading);color:var(--text-primary);margin:0;font-size:16px;font-weight:600}.featured-lesson-card p{color:var(--text-secondary);flex-grow:1;margin:0;font-size:13px;line-height:1.5}.featured-lesson-action{color:var(--accent-primary-text);align-items:center;gap:6px;margin-top:8px;font-size:13px;font-weight:600;display:flex}.featured-lesson-card:hover .featured-lesson-action{color:var(--accent-info)}.solution-layout{flex-direction:column;gap:20px;width:100%;display:flex}.toggle-pill-selector{background:var(--bg-card);border:1px solid var(--border-color);border-radius:30px;width:100%;max-width:360px;margin:0 auto;padding:4px;display:flex;box-shadow:0 4px 10px #00000008}.pill-btn{color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;border-radius:25px;outline:none;flex:1;padding:10px 16px;font-size:14px;font-weight:600}.pill-btn:hover{color:var(--text-primary)}.pill-btn.active{background:var(--accent-primary);color:#fff;box-shadow:0 2px 8px #6366f140}.step-card-v2{background:var(--bg-card);border:1px solid var(--border-color);transition:all var(--transition-medium);border-radius:16px;flex-direction:column;min-width:0;display:flex;overflow:hidden;box-shadow:0 4px 20px #00000005}.step-card-header-v2{border-bottom:1px solid var(--border-color);align-items:center;gap:16px;padding:20px 24px;display:flex}.step-card-body-v2{background:#f8fafc;flex-direction:column;gap:20px;padding:24px;display:flex}.step-navigation-bar{border-top:1px solid var(--border-color);background:var(--bg-card);justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.final-answer-container-v2{flex-direction:column;gap:16px;margin-top:8px;display:flex}.animate-fade-in{animation:fadeIn var(--transition-medium) ease-in-out}@media (height<=500px){.login-overlay{align-items:flex-start!important;padding:12px!important;overflow-y:auto!important}.login-card{border-radius:16px!important;gap:12px!important;margin-top:8px!important;margin-bottom:8px!important;padding:20px 16px!important}.login-logo{font-size:24px!important}.form-group{margin-bottom:10px!important}.app-header,.header-content{height:56px!important}.welcome-card{padding:20px!important}.welcome-card h2{font-size:20px!important}.welcome-card p{margin-bottom:12px!important}}.report-main-col{flex-direction:column;grid-column:span 8;gap:20px;display:flex}.report-sidebar-col{flex-direction:column;grid-column:span 4;gap:20px;display:flex}@media (width<=950px){.report-main-col,.report-sidebar-col{grid-column:span 12!important}}.grecaptcha-badge{visibility:hidden!important}mjx-utext,mjx-mtext,.mjx-text,.mjx-char{font-family:MathJax_Main,Noto Sans Devanagari,Kohinoor Devanagari,Devanagari Sangam MN,Nirmala UI,Mangal,Times New Roman,serif!important}.mathlab-description-banner{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:#fff59d;text-align:center;text-shadow:0 1px 2px #000c;pointer-events:none;z-index:20;box-sizing:border-box;background-color:#0f172ad9;border:1px solid #ffffff1f;border-radius:8px;max-width:85%;padding:6px 14px;font-family:Outfit,Inter,system-ui,-apple-system,sans-serif;font-size:clamp(12px,1.8vw,15px);font-weight:500;line-height:1.4;position:absolute;bottom:16px;left:50%;transform:translate(-50%);box-shadow:0 4px 12px #0009}.mathlab-mobile-description{display:none}@media (width<=768px){.mathlab-description-banner{display:none!important}.mathlab-mobile-description{color:#fff59d;text-align:center;box-sizing:border-box;background-color:#0f172ad9;border:1px solid #ffffff1f;border-radius:8px;margin:12px 8px 4px;padding:10px 14px;font-family:Outfit,Inter,system-ui,-apple-system,sans-serif;font-size:13px;font-weight:500;line-height:1.4;display:block;box-shadow:0 4px 10px #0000004d}}.chalkboard-container{height:500px}@media (width<=768px){.chalkboard-container{height:320px}}.chalkboard-container .MafsView,.chalkboard-container .MafsView svg{width:100%!important;height:100%!important}.chalkboard-container:fullscreen{background-color:#000!important;border-radius:0!important;flex-direction:column!important;justify-content:center!important;align-items:center!important;width:100vw!important;max-width:100vw!important;height:100vh!important;max-height:100vh!important;display:flex!important}.chalkboard-container:fullscreen canvas{max-width:100vw!important;max-height:calc(100vh - 80px)!important}.chalkboard-container:fullscreen .MafsView{max-width:100vw!important;max-height:calc(100vh - 80px)!important}.chalkboard-container:fullscreen .MafsView svg{max-width:100vw!important;max-height:calc(100vh - 80px)!important}.chalkboard-container:-webkit-full-screen canvas{max-width:100vw!important;max-height:calc(100vh - 80px)!important}.chalkboard-container:-webkit-full-screen .MafsView{max-width:100vw!important;max-height:calc(100vh - 80px)!important}.chalkboard-container:-webkit-full-screen .MafsView svg{max-width:100vw!important;max-height:calc(100vh - 80px)!important}.chalkboard-container.pseudo-fullscreen{z-index:99999!important;background-color:#000!important;border-radius:0!important;flex-direction:column!important;justify-content:center!important;align-items:center!important;width:100vw!important;height:100vh!important;margin:0!important;display:flex!important;position:fixed!important;top:0!important;left:0!important}.chalkboard-container.pseudo-fullscreen canvas,.chalkboard-container.pseudo-fullscreen .MafsView,.chalkboard-container.pseudo-fullscreen .MafsView svg{max-width:100vw!important;max-height:calc(100vh - 80px)!important}.chalkboard-container canvas{aspect-ratio:16/9!important;object-fit:contain!important;max-width:100%!important;max-height:100%!important}}@layer components{.input-card,.step-card-v2{border-radius:var(--radius-card,20px);box-shadow:var(--shadow-card,0 10px 30px #2a2f4514)}.input-card{gap:18px;padding:20px}.input-header-title{font-family:var(--font-display);letter-spacing:-.3px;font-size:22px;font-weight:900}.textarea-wrapper{background:var(--bg-card);border:1.5px solid var(--border-color);border-radius:var(--radius-field,16px);padding:16px 16px 10px}.textarea-wrapper.focused{border-color:#3fc3ec;box-shadow:0 0 0 4px #3fc3ec29}.math-textarea{font-family:var(--font-display);min-height:92px;font-size:17px}.math-textarea::placeholder{color:var(--text-muted)}.toggle-pill-selector{border-radius:var(--radius-field,16px);max-width:520px;box-shadow:var(--shadow-card-sm,0 4px 14px #2a2f450f);gap:4px;padding:6px}.pill-btn{font-family:var(--font-display);border-radius:var(--radius-chip,12px);white-space:nowrap;padding:12px 10px;font-size:13px;font-weight:800;line-height:1.2}.pill-btn.active{color:var(--on-accent);background:linear-gradient(135deg,#46caf0 0%,#2aa4d6 100%);box-shadow:0 6px 16px #2aa4d647}@media (width>=640px){.pill-btn{padding:13px 18px;font-size:15px}}.neutral-pill-container{border-radius:var(--radius-chip,12px);scrollbar-width:none;max-width:100%;padding:5px;overflow-x:auto}.neutral-pill-container::-webkit-scrollbar{display:none}.neutral-pill-item{font-family:var(--font-display);white-space:nowrap;border-radius:9px;padding:8px 16px;font-size:14px;font-weight:800}.neutral-pill-item.active{color:var(--text-primary);box-shadow:0 2px 8px #2a2f451a}.step-card-v2{border-width:1px}.submit-terms-note{color:var(--text-muted);margin:10px 2px 0;font-size:12px;line-height:1.5}.submit-terms-note a{color:var(--text-secondary);text-decoration:underline}.step-flow-hint{border-radius:var(--radius-chip,12px);color:var(--text-secondary);background:#46caf014;border:1px solid #46caf02e;margin:14px 2px 0;padding:10px 14px;font-size:13px;line-height:1.55}.step-flow-hint strong{color:var(--text-primary);font-weight:800}.final-answer-card.solution-incomplete{background:#f59e0b0f;border:1px solid #f59e0b4d}.final-answer-card.solution-incomplete .final-answer-title{color:#a8730a}.final-answer-card.solution-incomplete .final-answer-text{color:var(--text-secondary);font-size:14.5px;line-height:1.6}.video-rating-card{border-radius:var(--radius-card,20px);background:var(--bg-card);border:1px solid var(--border-color);box-shadow:var(--shadow-card-sm,0 4px 14px #2a2f450f);flex-wrap:wrap;align-items:center;gap:12px 18px;margin-top:14px;padding:14px 18px;display:flex}.video-rating-card--done{font-family:var(--font-display);color:var(--text-secondary);justify-content:center;font-size:14px;font-weight:700}.video-rating-label{font-family:var(--font-display);color:var(--text-primary);font-size:14.5px;font-weight:800}.video-rating-stars{gap:2px;display:flex}.video-rating-star{cursor:pointer;min-width:44px;min-height:44px;color:var(--text-muted);background:0 0;border:none;justify-content:center;align-items:center;transition:transform .12s;display:flex}.video-rating-star:hover{transform:scale(1.12)}.video-rating-quick{gap:8px;margin-left:auto;display:flex}.video-rating-quick-btn{border-radius:var(--radius-chip,12px);border:1.5px solid var(--border-color);background:var(--bg-card);min-height:44px;font-family:var(--font-display);color:var(--text-secondary);cursor:pointer;align-items:center;gap:6px;padding:8px 14px;font-size:13.5px;font-weight:700;transition:border-color .15s,color .15s;display:flex}.video-rating-quick-btn:hover{color:var(--text-primary);border-color:#3fc3ec}@media (width<=639px){.video-rating-card{gap:10px 12px;padding:12px 14px}.video-rating-quick{width:100%;margin-left:0}.video-rating-quick-btn{flex:1;justify-content:center}}.control-btn{min-width:44px;min-height:44px}.chalkboard-container{height:min(56vh,520px)}@media (width<=639px){.chalkboard-container{height:min(62dvh,480px)}.canvas-header-bar{display:none}.canvas-bottom-wrapper{gap:12px;padding:12px}}.quiz-question-card{border-radius:var(--radius-card,20px);box-shadow:var(--shadow-card,0 10px 30px #2a2f4514);padding:22px}@media (width>=640px){.quiz-question-card{padding:28px}}.quiz-meta-line{font-family:var(--font-display);color:var(--text-secondary);font-size:13px;font-weight:800}.quiz-progress-bar{align-items:center;gap:12px;display:flex}.quiz-progress-text{font-family:var(--font-display);color:var(--text-secondary);white-space:nowrap;font-size:12.5px;font-weight:800}.quiz-progress-track{background:#2a2f4514;border-radius:999px;flex:1;height:8px;overflow:hidden}.quiz-progress-fill{background:linear-gradient(135deg,#46caf0 0%,#2aa4d6 100%);border-radius:999px;height:100%;transition:width .35s}.quiz-option-btn{border-radius:var(--radius-field,16px);min-height:56px;font-family:var(--font-display);box-shadow:var(--shadow-card-sm,0 2px 8px #2a2f450d);border-width:1.5px;padding:14px 16px;font-size:15.5px;font-weight:600;transition:transform .15s,border-color .15s,box-shadow .15s}.quiz-option-btn:hover:not(:disabled){border-color:#3fc3ec;transform:translateY(-1px);box-shadow:0 6px 18px #2aa4d629}.quiz-option-btn:disabled{opacity:1;box-shadow:none}.quiz-option-btn.disabled{opacity:.55}.option-badge{width:30px;height:30px;font-family:var(--font-display);color:var(--text-secondary);background:#2a2f450f;border-radius:50%;flex:none;justify-content:center;align-items:center;font-size:13px;font-weight:900;display:flex}.quiz-option-btn.correct .option-badge{background:var(--accent-success,#0b7a5b);color:#fff}.quiz-option-btn.incorrect .option-badge{background:var(--accent-error,#c81e1e);color:#fff}.quiz-feedback-card{border-radius:var(--radius-card,20px);text-align:left;align-items:flex-start;padding:18px 20px}.quiz-feedback-text{font-size:15px;line-height:1.6}@media (width<=639px){.quiz-container{gap:16px}.quiz-option-btn{padding:13px 14px;font-size:15px}}.futuristic-tutor-container{border-radius:var(--radius-card,20px);box-shadow:var(--shadow-card,0 10px 30px #2a2f4524);background:linear-gradient(#1b2440 0%,#161d33 100%);border:1px solid #ffffff14}.tutor-chat-column,.tutor-visual-column,.tutor-variables-panel,.tutor-control-panel-bar{border-radius:var(--radius-field,16px);background:#ffffff09;border:1px solid #ffffff12}.socratic-card{box-sizing:border-box;background:linear-gradient(#f5b5441a 0%,#f5b5440d 100%);border:1px solid #f5b54447;border-radius:4px 16px 16px;align-self:flex-start;width:90%;max-width:100%;padding:14px 16px;font-size:13px;line-height:1.45;box-shadow:0 4px 14px #0000002e}.socratic-title{font-family:var(--font-display);letter-spacing:.6px;text-transform:uppercase;color:#f5b544;align-items:center;gap:6px;margin-bottom:8px;font-size:11.5px;font-weight:900;display:flex}.socratic-question-text{font-family:var(--font-display);color:#fff;margin-bottom:12px;font-size:15px;font-weight:600;line-height:1.55}.socratic-text-input{min-width:120px;font-family:var(--font-display);color:#fff;background:#ffffff0f;border:1px solid #ffffff29;border-radius:10px;outline:none;flex:1;min-height:44px;padding:10px 12px;font-size:15px}.socratic-text-input::placeholder{color:#ffffff73}.socratic-text-input:focus{border-color:#f5b54499;box-shadow:0 0 0 3px #f5b54429}.tutor-action-btn{font-family:var(--font-display);border-radius:12px;min-height:44px;font-weight:800}.tutor-action-btn.next{color:#06202c;background:linear-gradient(135deg,#46caf0 0%,#2aa4d6 100%)}@media (width<=639px){.tutor-chat-feed{max-height:58dvh}}.stats-card{gap:20px;padding:24px}.stat-value{font-family:var(--font-display);letter-spacing:-.5px;font-size:28px;font-weight:900;line-height:1.1}.stat-label{font-family:var(--font-display);letter-spacing:.7px;color:var(--text-muted);font-size:11.5px;font-weight:800}.stat-hint{color:var(--text-muted);margin-top:2px;font-size:11px;font-weight:700;line-height:1.3}.featured-lesson-card{border-radius:var(--radius-card,20px)}.featured-lesson-category{font-family:var(--font-display);letter-spacing:.7px;text-transform:uppercase;color:var(--accent-primary-text);font-size:11px;font-weight:900}.featured-lessons-title{font-family:var(--font-display);letter-spacing:-.3px;font-weight:900}.history-card{padding:18px 20px}.history-card-query{font-family:var(--font-display);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:15.5px;font-weight:700;line-height:1.45;display:-webkit-box;overflow:hidden}.history-card-badge{font-family:var(--font-display);letter-spacing:.3px;color:var(--text-secondary);background:#2a2f450f;border-radius:999px;padding:4px 10px;font-size:11px;font-weight:800}.history-card-badges{flex-wrap:wrap;gap:6px;display:flex}.leaderboard-rank-badge{width:32px;height:32px;font-family:var(--font-display);color:var(--text-primary);background:#2a2f450f;font-size:13px;font-weight:900}.leaderboard-list>:first-child .leaderboard-rank-badge{color:#3a2a05;background:linear-gradient(135deg,#f6c453 0%,#e0a52e 100%)}.leaderboard-list>:nth-child(2) .leaderboard-rank-badge{color:#2a2f45;background:linear-gradient(135deg,#d8dee9 0%,#b6c0cc 100%)}.leaderboard-list>:nth-child(3) .leaderboard-rank-badge{color:#3a1f05;background:linear-gradient(135deg,#e0a878 0%,#c98a55 100%)}.leaderboard-avatar{width:40px;height:40px;font-family:var(--font-display);color:var(--on-accent);background:linear-gradient(135deg,#46caf0 0%,#2aa4d6 100%);font-weight:900}.leaderboard-name{font-family:var(--font-display);font-size:15px;font-weight:700}.leaderboard-xp{font-family:var(--font-display);color:var(--accent-primary-text);font-weight:900}.key-point-chip{font-family:var(--font-display);color:var(--text-primary);background:#46caf014;border:1px solid #46caf033;border-radius:999px;padding:8px 14px;font-size:13px;font-weight:700}.progress-bar-bg{background:#2a2f4514;border-radius:999px;height:10px;overflow:hidden}.progress-bar-fill{background:linear-gradient(135deg,#46caf0 0%,#2aa4d6 100%);border-radius:999px;height:100%;transition:width .4s}.workspace-container{max-width:960px;margin:0 auto}@media (width<=639px){.stats-card{gap:16px;padding:18px}.stat-value{font-size:24px}.history-card{padding:15px 16px}.leaderboard-avatar{width:36px;height:36px}}.admin-container{max-width:1400px;margin:0 auto}.admin-container table{border-collapse:collapse;width:100%;font-family:var(--font-display);font-size:13.5px}.admin-container th{z-index:1;background:var(--bg-card);text-align:left;letter-spacing:.5px;text-transform:uppercase;color:var(--text-secondary);border-bottom:2px solid var(--border-color);white-space:nowrap;padding:10px 12px;font-size:11.5px;font-weight:900;position:sticky;top:0}.admin-container td{border-bottom:1px solid var(--border-color);color:var(--text-primary);vertical-align:top;padding:10px 12px}.admin-container tbody tr:nth-child(2n){background:#2a2f4506}.admin-container tbody tr:hover{background:#46caf012}.admin-container .num{font-variant-numeric:tabular-nums}.admin-container td:has(>.num){font-variant-numeric:tabular-nums}.admin-container .glass-card{overflow-x:auto}.sfx-flow{--sky:#3fc3ec;--sky-deep:#2aa4d6;--pink:#f6708e;--amber-deep:#e2971a;--grad-cta:linear-gradient(135deg, #0e7ead 0%, #0e74a8 100%);--grad-hero:linear-gradient(135deg, #4cc6ef 0%, #a08fce 48%, #f4778f 100%)}.sfx-flow .card{background:var(--bg-card);border:1px solid var(--border-color);box-shadow:var(--shadow-card-sm);border-radius:20px}.sfx-flow .btn{font-family:var(--font-display);cursor:pointer;border:none;border-radius:14px;padding:14px 26px;font-size:16px;font-weight:800;transition:transform .12s,box-shadow .12s}.sfx-flow .btn:active{transform:translateY(1px)}.sfx-flow .btn-primary{background:var(--grad-cta);color:#fff;box-shadow:0 8px 20px #2aa4d652}.sfx-rail{margin:0 0 18px}.sfx-rail .rail-inner{justify-content:space-between;align-items:flex-start;gap:6px;padding:18px 10px;display:flex}.sfx-rail .stage{text-align:center;font:inherit;background:0 0;border:none;flex-direction:column;flex:1;align-items:center;gap:9px;padding:0;display:flex}.sfx-rail .stage .bub{background:var(--bg-card);border:2.5px solid var(--border-color);width:40px;height:40px;color:var(--text-muted);border-radius:50%;place-items:center;font-size:17px;font-weight:900;transition:all .3s;display:grid}.sfx-rail .stage.done .bub{background:var(--brand-sky-text);color:#fff;border-color:#0000;box-shadow:0 6px 16px #1c86b459}.sfx-rail .stage.done .bub:after{content:"✓";font-size:18px;font-weight:900}.sfx-rail .stage.active .bub{border-color:var(--sky);color:var(--brand-sky-text);box-shadow:0 0 0 5px #3fc3ec29}.sfx-rail .stage.dest .bub{background:var(--bg-card);border:2.5px dashed var(--pink);color:var(--brand-pink-text)}.sfx-rail .stage.nav-stage{cursor:pointer}.sfx-rail .stage.nav-stage:hover .bub{border-color:var(--sky);box-shadow:0 0 0 5px #3fc3ec24}.sfx-rail .stage.nav-stage:focus-visible .bub{outline:2px solid var(--sky-deep);outline-offset:3px}.sfx-rail .stage .lbl{color:var(--text-secondary);max-width:84px;font-size:11px;font-weight:800;line-height:1.25}.sfx-rail .stage.active .lbl,.sfx-rail .stage.done .lbl{color:var(--brand-sky-text)}.sfx-rail .stage.dest .lbl{color:var(--brand-pink-text)}@media (width>=821px){.sfx-rail{max-width:900px;margin:0 auto 26px}.sfx-rail .rail-inner{padding:22px 26px}.sfx-rail .stage .bub{width:46px;height:46px;font-size:18px}.sfx-rail .stage .lbl{max-width:112px;font-size:13px}}.flow-opts{flex-direction:column;gap:10px;margin-top:22px;display:flex}.flow-opts .opts-title{letter-spacing:.05em;text-transform:uppercase;color:var(--text-muted);text-align:center;margin-bottom:2px;font-size:12px;font-weight:900}.flow-opts .opt-btn{background:var(--bg-card);border:1.5px solid var(--border-color);width:100%;font-family:var(--font-display);color:var(--text-primary);cursor:pointer;text-align:left;box-shadow:var(--shadow-card-sm);border-radius:14px;justify-content:space-between;align-items:center;gap:10px;padding:15px 18px;font-size:15px;font-weight:800;transition:all .15s;display:flex}.flow-opts .opt-btn:hover{border-color:var(--sky,#3fc3ec);box-shadow:0 6px 16px #3fc3ec29}.flow-opts .opt-btn.done{color:var(--text-secondary)}.flow-opts .opt-btn.done:after{content:"✓";color:var(--brand-sky-text);font-size:16px;font-weight:900}.flow-opts .leader-cta{text-align:center;color:#fff;background:linear-gradient(135deg,#1a6c8f 0%,#6a5fa8 48%,#c2185b 100%);border:none;padding:26px 22px}.flow-opts .leader-cta .lc-tro{margin-bottom:8px;font-size:34px}.flow-opts .leader-cta h3{margin-bottom:8px;font-size:20px;font-weight:900}.flow-opts .leader-cta p{opacity:.95;margin-bottom:16px;font-weight:700;line-height:1.5}.flow-opts .leader-cta .btn-primary{color:var(--brand-sky-text);width:100%;font-family:var(--font-display);cursor:pointer;box-shadow:none;background:#fff;border:none;border-radius:14px;padding:14px 26px;font-size:16px;font-weight:800}@media (width>=821px){.flow-opts{flex-flow:wrap;justify-content:center;gap:12px;margin-top:28px}.flow-opts .opts-title{width:100%;margin-bottom:4px}.flow-opts .opt-btn{text-align:center;justify-content:center;width:auto;min-width:250px}.flow-opts .leader-cta{flex:0 0 100%;max-width:620px;margin:6px auto 0;padding:30px 26px}.flow-opts .leader-cta .btn-primary{width:auto;min-width:300px}}.solution-two-col{grid-template-columns:1fr 1fr;align-items:start;column-gap:24px;display:grid}.solution-two-col .sol-col{min-width:0}.flow-section-label{letter-spacing:.05em;text-transform:uppercase;color:var(--text-muted);margin:0 0 8px 2px;font-size:12px;font-weight:900}.quiz-option-card{align-items:center;gap:16px;display:flex}.quiz-option-card.disabled{opacity:.42;box-shadow:none}.quiz-option-card.correct{background:#eaf7f0;border-color:#1f9d64}.quiz-option-card.correct .option-badge{color:#fff;background:#0f7a48}.quiz-option-card.incorrect{background:#fdeef1;border-color:#e4576f}.quiz-option-card.incorrect .option-badge{color:#fff;background:#d8344f}.quiz-option-card:not(.correct):not(.incorrect):not(.disabled):hover{border-color:#3fc3ec;box-shadow:0 6px 16px #3fc3ec29}.quiz-feedback-card{margin-top:4px;padding:18px 20px}.quiz-feedback-card .quiz-feedback-text{border-radius:10px;padding:11px 13px;font-size:13.5px;font-weight:700;line-height:1.5}.quiz-feedback-card.correct .quiz-feedback-text{color:#0f7a48;background:#eaf7f0}.quiz-feedback-card.incorrect .quiz-feedback-text{color:#c0293f;background:#fdeef1}.quiz-feedback-card.incorrect .quiz-feedback-text b{color:#a01c30}.glass-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-card,20px);box-shadow:var(--shadow-card,0 10px 30px #2a2f4514);transition:transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal)}a.glass-card:hover,button.glass-card:hover,.history-card:hover,.featured-lesson-card:hover{border-color:#3fc3ec73;transform:translateY(-2px);box-shadow:0 14px 34px #2aa4d624}.neutral-pill-container{background:var(--bg-card-hover);border:1px solid var(--border-color);border-radius:9999px;gap:2px;padding:4px;display:inline-flex}.neutral-pill-item{font-family:var(--font-body);color:var(--text-secondary);cursor:pointer;transition:background var(--transition-fast), color var(--transition-fast);background:0 0;border:none;border-radius:9999px;padding:6px 14px;font-size:13px;font-weight:600}.neutral-pill-item.active{background:var(--bg-card);color:var(--text-primary);box-shadow:0 2px 4px #00000014}.neutral-pill-item:hover:not(.active){color:var(--text-primary)}.btn-primary{background:linear-gradient(135deg, var(--accent-primary) 0%, #28a0c5 100%);color:var(--on-accent);font-family:var(--font-heading);cursor:pointer;transition:transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);border:none;border-radius:12px;align-items:center;gap:8px;padding:12px 24px;font-size:15px;font-weight:600;display:inline-flex;box-shadow:0 4px 12px #4bcdf033}.btn-primary:hover{filter:brightness(1.05);transform:translateY(-1px);box-shadow:0 6px 16px #4bcdf059}.btn-primary:active{transform:translateY(1px)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}.btn-secondary{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border-color);font-family:var(--font-heading);cursor:pointer;transition:background var(--transition-fast), border-color var(--transition-fast);border-radius:12px;align-items:center;gap:8px;padding:12px 24px;font-size:15px;font-weight:600;display:inline-flex}.btn-secondary:hover{background:var(--bg-main);border-color:var(--text-secondary)}}@layer utilities{.\@container{container-type:inline-size}.collapse{visibility:collapse}.invisible{visibility:hidden}.visible{visibility:visible}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.sticky{position:sticky}.top-0{top:0}.top-6{top:calc(var(--spacing) * 6)}.top-10{top:calc(var(--spacing) * 10)}.isolate{isolation:isolate}.z-40{z-index:40}.order-123{order:123}.container{width:100%}@media (width>=40rem){.container{max-width:40rem}}@media (width>=48rem){.container{max-width:48rem}}@media (width>=64rem){.container{max-width:64rem}}@media (width>=80rem){.container{max-width:80rem}}@media (width>=96rem){.container{max-width:96rem}}.m-1{margin:var(--spacing)}.m-2{margin:calc(var(--spacing) * 2)}.mx-auto{margin-inline:auto}.my-5{margin-block:calc(var(--spacing) * 5)}.mt-1{margin-top:var(--spacing)}.mt-2{margin-top:calc(var(--spacing) * 2)}.mt-2\.5{margin-top:calc(var(--spacing) * 2.5)}.mt-3{margin-top:calc(var(--spacing) * 3)}.mt-5{margin-top:calc(var(--spacing) * 5)}.mb-1\.5{margin-bottom:calc(var(--spacing) * 1.5)}.mb-4{margin-bottom:calc(var(--spacing) * 4)}.mb-6{margin-bottom:calc(var(--spacing) * 6)}.-ml-1{margin-left:calc(var(--spacing) * -1)}.block{display:block}.contents{display:contents}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline{display:inline}.inline-block{display:inline-block}.inline-flex{display:inline-flex}.table{display:table}.h-0\.5{height:calc(var(--spacing) * .5)}.h-8{height:calc(var(--spacing) * 8)}.h-9{height:calc(var(--spacing) * 9)}.h-px{height:1px}.min-h-\[44px\]{min-height:44px}.min-h-dvh{min-height:100dvh}.w-8{width:calc(var(--spacing) * 8)}.w-9{width:calc(var(--spacing) * 9)}.w-full{width:100%}.max-w-5xl{max-width:var(--container-5xl)}.max-w-md{max-width:var(--container-md)}.min-w-0{min-width:0}.flex-1{flex:1}.shrink{flex-shrink:1}.shrink-0{flex-shrink:0}.grow{flex-grow:1}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.animate-pulse{animation:var(--animate-pulse)}.animate-spin{animation:var(--animate-spin)}.resize{resize:both}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.flex-col{flex-direction:column}.place-items-center{place-items:center}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-1{gap:var(--spacing)}.gap-1\.5{gap:calc(var(--spacing) * 1.5)}.gap-2{gap:calc(var(--spacing) * 2)}.gap-2\.5{gap:calc(var(--spacing) * 2.5)}.gap-3{gap:calc(var(--spacing) * 3)}.gap-4{gap:calc(var(--spacing) * 4)}.truncate{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.rounded{border-radius:.25rem}.rounded-btn{border-radius:var(--radius-btn)}.rounded-chip{border-radius:var(--radius-chip)}.rounded-full{border-radius:3.40282e38px}.rounded-lg{border-radius:var(--radius-lg)}.border{border-style:var(--tw-border-style);border-width:1px}.border-\[1\.5px\]{border-style:var(--tw-border-style);border-width:1.5px}.border-t{border-top-style:var(--tw-border-style);border-top-width:1px}.grad-brand-text{color:#0000;background:linear-gradient(90deg,#49b7e8 0%,#8f8fd0 45%,#f4708e 100%);-webkit-background-clip:text;background-clip:text}.p-6{padding:calc(var(--spacing) * 6)}.px-3\.5{padding-inline:calc(var(--spacing) * 3.5)}.px-4{padding-inline:calc(var(--spacing) * 4)}.px-5{padding-inline:calc(var(--spacing) * 5)}.px-6{padding-inline:calc(var(--spacing) * 6)}.py-2{padding-block:calc(var(--spacing) * 2)}.py-2\.5{padding-block:calc(var(--spacing) * 2.5)}.py-3{padding-block:calc(var(--spacing) * 3)}.py-3\.5{padding-block:calc(var(--spacing) * 3.5)}.pt-3{padding-top:calc(var(--spacing) * 3)}.pt-7{padding-top:calc(var(--spacing) * 7)}.pb-16{padding-bottom:calc(var(--spacing) * 16)}.text-center{text-align:center}.text-base{font-size:var(--text-base);line-height:var(--tw-leading,var(--text-base--line-height))}.text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}.text-\[11\.5px\]{font-size:11.5px}.text-\[11px\]{font-size:11px}.text-\[12px\]{font-size:12px}.text-body-sm{font-size:var(--text-body-sm)}.text-caption{font-size:var(--text-caption)}.text-title{font-size:var(--text-title)}.text-title-sm{font-size:var(--text-title-sm)}.leading-relaxed{--tw-leading:var(--leading-relaxed);line-height:var(--leading-relaxed)}.font-black{--tw-font-weight:var(--font-weight-black);font-weight:var(--font-weight-black)}.font-bold{--tw-font-weight:var(--font-weight-bold);font-weight:var(--font-weight-bold)}.font-extrabold{--tw-font-weight:var(--font-weight-extrabold);font-weight:var(--font-weight-extrabold)}.font-semibold{--tw-font-weight:var(--font-weight-semibold);font-weight:var(--font-weight-semibold)}.tracking-tight{--tw-tracking:var(--tracking-tight);letter-spacing:var(--tracking-tight)}.text-wrap{text-wrap:wrap}.grad-cta{color:var(--on-accent);background:linear-gradient(135deg,#46caf0 0%,#2aa4d6 100%)}.capitalize{text-transform:capitalize}.lowercase{text-transform:lowercase}.uppercase{text-transform:uppercase}.italic{font-style:italic}.overline{text-decoration-line:overline}.underline{text-decoration-line:underline}.shadow{--tw-shadow:0 1px 3px 0 var(--tw-shadow-color,#0000001a), 0 1px 2px -1px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-\[0_8px_20px_rgba\(42\,164\,214\,\.32\)\]{--tw-shadow:0 8px 20px var(--tw-shadow-color,#2aa4d652);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.ring{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.drop-shadow{--tw-drop-shadow-size:drop-shadow(0 1px 2px var(--tw-drop-shadow-color,#0000001a)) drop-shadow(0 1px 1px var(--tw-drop-shadow-color,#0000000f));--tw-drop-shadow:drop-shadow(0 1px 2px #0000001a) drop-shadow(0 1px 1px #0000000f);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.grayscale{--tw-grayscale:grayscale(100%);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.invert{--tw-invert:invert(100%);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.backdrop-blur-\[10px\]{--tw-backdrop-blur:blur(10px);-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-all{transition-property:all;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-colors{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-transform{transition-property:transform,translate,scale,rotate;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.ease-in-out{--tw-ease:var(--ease-in-out);transition-timing-function:var(--ease-in-out)}.ease-out{--tw-ease:var(--ease-out);transition-timing-function:var(--ease-out)}.outline-none{--tw-outline-style:none;outline-style:none}.focus\:border-\[\#3fc3ec\]:focus{border-color:#3fc3ec}.active\:translate-y-px:active{--tw-translate-y:1px;translate:var(--tw-translate-x) var(--tw-translate-y)}.disabled\:cursor-wait:disabled{cursor:wait}.disabled\:opacity-70:disabled{opacity:.7}@media (width>=40rem){.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:p-7{padding:calc(var(--spacing) * 7)}.sm\:text-title{font-size:var(--text-title)}}}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/nunito-cyrillic-ext-400-normal-CuPM9foi.woff2)format("woff2"),url(/assets/nunito-cyrillic-ext-400-normal-xaE7D4Sw.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/nunito-cyrillic-400-normal-xAOo5cBP.woff2)format("woff2"),url(/assets/nunito-cyrillic-400-normal-D1j0u8EH.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/nunito-vietnamese-400-normal-BHkVbP3T.woff2)format("woff2"),url(/assets/nunito-vietnamese-400-normal-DtOtW02z.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/nunito-latin-ext-400-normal-i-8OOpdj.woff2)format("woff2"),url(/assets/nunito-latin-ext-400-normal-CjMJVfGn.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/nunito-latin-400-normal-r8SDr6Up.woff2)format("woff2"),url(/assets/nunito-latin-400-normal-DKg4f3fz.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/nunito-cyrillic-ext-600-normal-CWPPjBOD.woff2)format("woff2"),url(/assets/nunito-cyrillic-ext-600-normal-vnfu4DTE.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/nunito-cyrillic-600-normal-DJGQ2h05.woff2)format("woff2"),url(/assets/nunito-cyrillic-600-normal-BUjmtIuu.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/nunito-vietnamese-600-normal-BY8O6Cug.woff2)format("woff2"),url(/assets/nunito-vietnamese-600-normal-DO1RqFw5.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/nunito-latin-ext-600-normal-Dd9Zuxh1.woff2)format("woff2"),url(/assets/nunito-latin-ext-600-normal-BKUpuB78.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/nunito-latin-600-normal-Br8yIETf.woff2)format("woff2"),url(/assets/nunito-latin-600-normal-Cd0eNu1l.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/nunito-cyrillic-ext-700-normal-BuR0mlCG.woff2)format("woff2"),url(/assets/nunito-cyrillic-ext-700-normal-DfoqN4Gs.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/nunito-cyrillic-700-normal-DP36NgGt.woff2)format("woff2"),url(/assets/nunito-cyrillic-700-normal-DfHRUDv-.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/nunito-vietnamese-700-normal-Ch8EUCfz.woff2)format("woff2"),url(/assets/nunito-vietnamese-700-normal-C9SQsXvj.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/nunito-latin-ext-700-normal-BWeMsAzO.woff2)format("woff2"),url(/assets/nunito-latin-ext-700-normal-D4woHhbd.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/nunito-latin-700-normal-Dort48En.woff2)format("woff2"),url(/assets/nunito-latin-700-normal-OcDqTBcA.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/nunito-cyrillic-ext-800-normal-B-cvGohL.woff2)format("woff2"),url(/assets/nunito-cyrillic-ext-800-normal-pjRatrRO.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/nunito-cyrillic-800-normal-D3igD7Kl.woff2)format("woff2"),url(/assets/nunito-cyrillic-800-normal-DymMgApb.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/nunito-vietnamese-800-normal-D_CZYdm9.woff2)format("woff2"),url(/assets/nunito-vietnamese-800-normal-Dz0hZPb5.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/nunito-latin-ext-800-normal-CtU8tJOV.woff2)format("woff2"),url(/assets/nunito-latin-ext-800-normal-CDcxIxx8.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/nunito-latin-800-normal-Dz8SOQK_.woff2)format("woff2"),url(/assets/nunito-latin-800-normal-D-J0wlBY.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(/assets/nunito-cyrillic-ext-900-normal-BLeVovcl.woff2)format("woff2"),url(/assets/nunito-cyrillic-ext-900-normal-DKFql_-q.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(/assets/nunito-cyrillic-900-normal-CWPcV0_V.woff2)format("woff2"),url(/assets/nunito-cyrillic-900-normal-Dr1fjxoU.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(/assets/nunito-vietnamese-900-normal-D6LWQAy_.woff2)format("woff2"),url(/assets/nunito-vietnamese-900-normal-WV2-fBew.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(/assets/nunito-latin-ext-900-normal-Dllsvgjo.woff2)format("woff2"),url(/assets/nunito-latin-ext-900-normal-CTBZd6bf.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(/assets/nunito-latin-900-normal-BVB1fGs6.woff2)format("woff2"),url(/assets/nunito-latin-900-normal-CVn49sIn.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--surface:#fff;--surface-2:#f6f8fb;--ink:#2b303a;--slate:#5b6472;--soft:#9aa3b2;--line:#e7ebf1;--font-heading:"Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-body:"Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--bg-main:#f8f9fa;--bg-card:#fff;--bg-card-hover:#f1f5f9;--border-color:#e2e8f0;--text-primary:#2d3436;--text-secondary:#5a6673;--text-muted:#5c6875;--accent-primary:#4bcdf0;--on-accent:#06202c;--brand-sky-text:#1a6c8f;--brand-pink-text:#c2185b;--accent-primary-text:#17739a;--accent-glow:#4bcdf01f;--accent-success:#0b7a5b;--accent-info:#ff6b81;--accent-warning:#f59e0b;--accent-warning-text:#96670a;--accent-error:#c81e1e;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000000d, 0 2px 4px -2px #0000000d;--shadow-lg:0 10px 15px -3px #00000014, 0 4px 6px -4px #00000014;--shadow-xl:0 15px 25px -5px #00000014, 0 8px 10px -6px #00000014;--transition-fast:.15s ease;--transition-normal:.25s cubic-bezier(.4, 0, .2, 1);--transition-slow:.4s cubic-bezier(.4, 0, .2, 1);--page-wash:radial-gradient(1200px 500px at 15% -5%, var(--color-wash-a,#dff0fb), transparent 60%), radial-gradient(1200px 600px at 100% 30%, var(--color-wash-b,#fde6ec), transparent 55%)}@keyframes fadeIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse-glow{0%,to{box-shadow:0 0 15px #4bcdf01a}50%{box-shadow:0 0 25px #4bcdf04d}}@keyframes voicePulse{0%{opacity:.5;transform:scale(.95)}50%{opacity:.8;transform:scale(1.1)}to{opacity:.5;transform:scale(.95)}}@keyframes slideDown{0%{opacity:0;height:0}to{height:var(--radix-accordion-content-height);opacity:1}}.animate-fade-in{animation:fadeIn var(--transition-normal) forwards}math-field::part(virtual-keyboard-toggle),math-field::part(menu-toggle){display:none!important}mjx-container[display=true],.katex-display{margin:1em 0!important;font-size:1.25em!important}mjx-container:not([display=true]),.katex{margin:0 .1em!important;font-size:1.15em!important}mjx-mtext{margin-right:.18em!important}mjx-mtext+mjx-mo,mjx-mtext+mjx-mi,mjx-mtext+mjx-mn,mjx-mtext+mjx-msub,mjx-mtext+mjx-msup,mjx-mtext+mjx-mfrac{margin-left:.38em!important}.katex .mrel{padding:0 .2em;margin:0 .2778em!important}.katex .mbin{padding:0 .1em;margin:0 .2222em!important}.mjx-explorer-help,.MathJax_MenuButton,[data-focusable=true]:after{display:none!important}@keyframes ctaPulse{0%{transform:scale(1);box-shadow:0 0 #4bcdf0b3}70%{transform:scale(1.03);box-shadow:0 0 0 10px #4bcdf000}to{transform:scale(1);box-shadow:0 0 #4bcdf000}}.cta-highlight{animation:1.8s ease-in-out infinite ctaPulse;background:var(--accent-primary)!important;border-color:var(--accent-primary)!important;color:#fff!important;font-weight:700!important}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{50%{opacity:.5}}.MafsView{background:var(--mafs-bg);-webkit-user-select:none;user-select:none;font-variant-numeric:tabular-nums;touch-action:none;--mafs-bg:black;--mafs-fg:white;--mafs-origin-color:var(--mafs-fg);--mafs-line-color:#555;--mafs-line-stroke-dash-style:4, 3;--mafs-axis-stroke-width:1px;--grid-line-subdivision-color:#222;--mafs-red:#f11d0e;--mafs-orange:#f14e0e;--mafs-yellow:#ffe44a;--mafs-green:#15e272;--mafs-blue:#58a6ff;--mafs-indigo:#7c58ff;--mafs-violet:#ae58ff;--mafs-pink:#ee00ab;outline:0;font-family:inherit;display:block;overflow:hidden}.MafsView text{fill:var(--mafs-fg);cursor:default}.MafsView path{stroke:var(--mafs-fg)}.MafsView:focus-visible{border-radius:5px;outline:3px solid #58a6ff}@supports not selector(:focus-visible){.MafsView:focus{border-radius:5px;outline:3px solid #58a6ff}}.mafs-shadow{paint-order:stroke;stroke-width:3px;stroke:var(--mafs-bg);stroke-opacity:.75;stroke-linejoin:round}.mafs-movable-point{cursor:grab;touch-action:none}.mafs-movable-point-dragging{cursor:grabbing}.mafs-movable-point:focus{outline:0}.mafs-movable-point *{fill:none;stroke:none}.mafs-movable-point-hitbox{fill:#0000}.mafs-movable-point-focus{stroke:var(--movable-point-color);stroke-width:2px;stroke-opacity:0;fill:none;transition:stroke-opacity .2s}.mafs-movable-point-ring{fill:var(--movable-point-color);fill-opacity:.25;stroke:none;transition:r .2s}.mafs-movable-point-point{fill:var(--movable-point-color);transition:r .2s}.mafs-movable-point:hover .mafs-movable-point-point,.mafs-movable-point:focus-visible .mafs-movable-point-point{r:calc(var(--movable-point-ring-size) - 2px)}.mafs-movable-point:hover .mafs-movable-point-ring,.mafs-movable-point:focus-visible .mafs-movable-point-ring{r:calc(var(--movable-point-ring-size) + 3px)}.mafs-movable-point.mafs-movable-point-dragging .mafs-movable-point-ring{r:var(--movable-point-ring-size)}.mafs-movable-point:focus-visible .mafs-movable-point-focus{stroke-opacity:1}@font-face{font-family:CMU Serif;font-style:roman;font-weight:500;src:url(/assets/cmu-serif-500-roman-eT-JDYhI.woff2)format("woff2"),url(/assets/cmu-serif-500-roman-DzIVZ5Ds.ttf)format("truetype")}@font-face{font-family:CMU Serif;font-style:italic;font-weight:500;src:url(/assets/cmu-serif-500-italic-Ea3rjVFP.woff2)format("woff2"),url(/assets/cmu-serif-500-italic-DmklLiNq.ttf)format("truetype")}@font-face{font-family:CMU Serif;font-style:roman;font-weight:700;src:url(/assets/cmu-serif-700-roman-CFvVWXrf.woff2)format("woff2"),url(/assets/cmu-serif-700-roman-BjpK3YEj.ttf)format("truetype")}@font-face{font-family:CMU Serif;font-style:italic;font-weight:700;src:url(/assets/cmu-serif-700-italic-CxA60R0R.woff2)format("woff2"),url(/assets/cmu-serif-700-italic-ysTsm4l3.ttf)format("truetype")}.MafsView{font-family:CMU Serif,serif}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2)format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff)format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2)format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff)format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2)format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff)format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2)format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff)format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2)format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff)format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2)format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff)format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2)format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff)format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2)format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff)format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2)format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff)format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2)format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff)format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2)format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff)format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff)format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff)format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff)format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2)format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff)format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2)format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff)format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2)format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff)format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,d09GMgABAAAAAA4oAA4AAAAAHbQAAA3TAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAABmAAgRQIDgmcDBEICo1oijYBNgIkA14LMgAEIAWJAAeBHAyBHBvbGiMRdnO0IkRRkiYDgr9KsJ1NUAf2kILNxgUmgqIgq1P89vcbIcmsQbRps3vCcXdYOKSWEPEKgZgQkprQQsxIXUgq0DqpGKmIvrgkeVGtEQD9DzAO29fM9jYhxZEsL2FeURH2JN4MIcTdO049NCVdxQ/w9NrSYFEBKTDKpLKfNkCGDc1RwjZLQcm3vqJ2UW9Xfa3tgAHz6ivp6vgC2yD4/6352ndnN0X0TL7seypkjZlMsjmZnf0Mm5Q+JykRWQBKCVCVPbARPXWyQtb5VgLB6Biq7/Uixcj2WGqdI8tGSgkuRG+t910GKP2D7AQH0DB9FMDW/obJZ8giFI3Wg8Cvevz0M+5m0rTh7XDBlvo9Y4vm13EXmfttwI4mBo1EG15fxJhUiCLbiiyCf/ZA6MFAhg3pGIZGdGIVjtPn6UcMk9A/UUr9PhoNsCENw1APAq0gpH73e+M+0ueyHbabc3vkbcdtzcf/fiy+NxQEjf9ud/ELBHAXJ0nk4z+MXH2Ev/kWyV4k7SkvpPc9Qr38F6RPWnM9cN6DJ0AdD1BhtgABtmoRoFCvPsBAumNm6soZG2Gk5GyVTo2sJncSyp0jQTYoR6WDvTwaaEcHsxHfvuWhHA3a6bN7twRKtcGok6NsCi7jYRrM2jExsUFMxMQYuJbMhuWNOumEJy9hi29Dmg5zMp/A5+hhPG19j1vBrq8JTLr8ki5VLPmG/PynJHVul440bxg5xuymHUFPBshC+nA9I1FmwbRBTNHAcik3Oae0cxKoI3MOriM42UrPe51nsaGxJ+WfXubAsP84aabUlQSJ1IiE0iPETLUU4CATgfXSCSpuRFRmCGbO+wSpAnzaeaCYW1VNEysRtuXCEL1kUFUbbtMv3Tilt/1c11jt3Q5bbMa84cpWipp8Elw3MZhOHsOlwwVUQM3lAR35JiFQbaYCRnMF2lxAWoOg2gyoIV4PouX8HytNIfLhqpJtXB4vjiViUI8IJ7bkC4ikkQvKksnOTKICwnqWSZ9YS5f0WCxmpgjbIq7EJcM4aI2nmhLNY2JIUgOjXZFWBHb+x5oh6cwb0Tv1ackHdKi0I9OO2wE9aogIOn540CCCziyhN+IaejtgAONKznHlHyutPrHGwCx9S6B8kfS4Mfi4Eyv7OU730bT1SCBjt834cXsf43zVjPUqqJjgrjeGnBxSG4aYAKFuVbeCfkDIjAqMb6yLNIbCuvXhMH2/+k2vkNpkORhR59N1CkzoOENvneIosjYmuTxlhUzaGEJQ/iWqx4dmwpmKjrwTiTGTCVozNAYqk/zXOndWxuWSmJkQpJw3pK5KX6QrLt5LATMqpmPAQhkhK6PUjzHUn7E0gHE0kPE0iKkolgkUx9SZmVAdDgpffdyJKg3k7VmzYGCwVXGz/tXmkOIp+vcWs+EMuhhvN0h9uhfzWJziBQmCREGSIFmQIkgVpAnSBRmC//6hkLZwaVhwxlrJSOdqlFtOYxlau9F2QN5Y98xmIAsiM1HVp2VFX+DHHGg6Ecjh3vmqtidX3qHI2qycTk/iwxSt5UzTmEP92ZBnEWTk4Mx8Mpl78ZDokxg/KWb+Q0QkvdKVmq3TMW+RXEgrsziSAfNXFMhDc60N5N9jQzjfO0kBKpUZl0ZmwJ41j/B9Hz6wmRaJB84niNmQrzp9eSlQCDDzazGDdVi3P36VZQ+Jy4f9UBNp+3zTjqI4abaFAm+GShVaXlsGdF3FYzZcDI6cori4kMxUECl9IjJZpzkvitAoxKue+90pDMvcKRxLl53TmOKCmV/xRolNKSqqUxc6LStOETmFOiLZZptlZepcKiAzteG8PEdpnQpbOMNcMsR4RR2Bs0cKFEvSmIjAFcnarqwUL4lDhHmnVkwu1IwshbiCcgvOheZuYyOteufZZwlcTlLgnZ3o/WcYdzZHW/WGaqaVfmTZ1aWCceJjkbZqsfbkOtcFlUZM/jy+hXHDbaUobWqqXaeWobbLO99yG5N3U4wxco0rQGGcOLASFMXeJoham8M+/x6O2WywK2l4HGbq1CoUyC/IZikQhdq3SiuNrvAEj0AVu9x2x3lp/xWzahaxidezFVtdcb5uEnzyl0ZmYiuKI0exvCd4Xc9CV1KB0db00z92wDPde0kukbvZIWN6jUWFTmPIC/Y4UPCm8UfDTFZpZNon1qLFTkBhxzB+FjQRA2Q/YRJT8pQigslMaUpFyAG8TMlXigiqmAZX4xgijKjRlGpLE0GdplRfCaJo0JQaSxNBk6ZmMzcya0FmrcisDdn0Q3HI2sWSppYigmlM1XT/kLQZSNpMJG0WkjYbSZuDpM1F0uYhFc1HxU4m1QJjDK6iL0S5uSj5rgXc3RejEigtcRBtqYPQsiTskmO5vosV+q4VGIKbOkDg0jtRrq+Em1YloaTFar3EGr1EUC8R0kus1Uus00usL97ABr2BjXoDm/QGNhuWtMVBKOwg/i78lT7hBsAvDmwHc/ao3vmUbBmhjeYySZNWvGkfZAgISDSaDo1SVpzGDsAEkF8B+gEapViUoZgUWXcRIGFZNm6gWbAKk0bp0k1MHG9fLYtV4iS2SmLEQFARzRcnf9PUS0LVn05/J9MiRRBU3v2IrvW974v4N00L7ZMk0wXP1409CHo/an8zTRHD3eSJ6m8D4YMkZNl3M79sqeuAsr/m3f+8/yl7A50aiAEJgeBeMWzu7ui9UfUBCe2TIqZIoOd/3/udRBOQidQZUERzb2/VwZN1H/Sju82ew2H2Wfr6qvfVf3hqwDvAIpkQVFy4B9Pe9e4/XvPeceu7h3dvO56iJPf0+A6cqA2ip18ER+iFgggiuOkvj24bby0N9j2UHIkgqIt+sVgfodC4YghLSMjSZbH0VR/6dMDrYJeKHilKTemt6v6kvzvn3/RrdWtr0GoN/xL+Sex/cPYLUpepx9cz/D46UPU5KXgAQa+NDps1v6J3xP1i2HtaDB0M9aX2deA7SYff//+gUCovMmIK/qfsFcOk+4Y5ZN97XlG6zebqtMbKgeRFi51vnxTQYBUik2rS/Cn6PC8ADR8FGxsRPB82dzfND90gIcshOcYUkfjherBz53odpm6TP8txlwOZ71xmfHHOvq053qFF/MRlS3jP0ELudrf2OeN8DHvp6ZceLe8qKYvWz/7yp0u4dKPfli3CYq0O13Ih71mylJ80tOi10On8wi+F4+LWgDPeJ30msSQt9/vkmHq9/Lvo2b461mP801v3W4xTcs6CbvF9UDdrSt+A8OUbpSh55qAUFXWznBBfdeJ8a4d7ugT5tvxUza3h9m4H7ptTqiG4z0g5dc0X29OcGlhpGFMpQo9ytTS+NViZpNdvU4kWx+LKxNY10kQ1yqGXrhe4/1nvP7E+nd5A92TtaRplbHSqoIdOqtRWti+fkB5/n1+/VvCmz12pG1kpQWsfi1ftlBobm0bpngs16CHkbIwdLnParxtTV3QYRlfJ0KFskH7pdN/YDn+yRuSd7sNH3aO0DYPggk6uWuXrfOc+fa3VTxFVvKaNxHsiHmsXyCLIE5yuOeN3/Jdf8HBL/5M6shjyhxHx9BjB1O0+4NLOnjLLSxwO7ukN4jMbOIcD879KLSi6Pk61Oqm2377n8079PXEEQ7cy7OKEC9nbpet118fxweTafpt69x/Bt8UqGzNQt7aelpc44dn5cqhwf71+qKp/Zf/+a0zcizOUWpl/iBcSXip0pplkatCchoH5c5aUM8I7/dWxAej8WicPL1URFZ9BDJelUwEwTkGqUhgSlydVes95YdXvhh9Gfz/aeFWvgVb4tuLbcv4+wLdutVZv/cUonwBD/6eDlE0aSiKK/uoH3+J1wDE/jMVqY2ysGufN84oIXB0sPzy8ollX/LegY74DgJXJR57sn+VGza0x3DnuIgABFM15LmajjjsNlYj+JEZGbuRYcAMOWxFkPN2w6Wd46xo4gVWQR/X4lyI/R6K/YK0110GzudPRW7Y+UOBGTfNNzHeYT0fiH0taunBpq9HEW8OKSaBGj21L0MqenEmNRWBAWDWAk4CpNoEZJ2tTaPFgbQYj8HxtFilErs3BTRwT8uO1NXQaWfIotchmPkAF5mMBAliEmZiOGVgCG9LgRzpscMAOOwowlT3JhusdazXGSC/hxR3UlmWVwWHpOIKheqONvjyhSiTHIkVUco5bnji8m//zL7PKaT1Vl5I6UE609f+gkr6MZKVyKc7zJRmCahLsdlyA5fdQkRSan9LgnnLEyGSkaKJCJog0wAgvepWBt80+1yKln1bMVtCljfNWDueKLsWwaEbBSfSPTEmVRsUcYYMnEjcjeyCZzBXK9E9BYBXLKjOSpUDR+nEV3TFSUdQaz+ot98QxgXwx0GQ+EEUAKB2qZPkQQ0GqFD8UPFMqyaCHM24BZmSGic9EYMagKizOw9Hz50DMrDLrqqLkTAhplMictiCAx5S3BIUQdeJeLnBy2CNtMfz6cV4u8XKoFZQesbf9YZiIERiHjaNodDW6LgcirX/mPnJIkBGDUpTBhSa0EIr38D5hCIszhCM8URGBqImoWjpvpt1ebu/v3Gl3qJfMnNM+9V+kiRFyROTPHQWOcs1dNW94/ukKMPZBvDi55i5CttdeJz84DLngLqjcdwEZ87bFFR8CIG35OAkDVN6VRDZ7aq67NteYqZ2lpT8oYB2CytoBd6VuAx4WgiAsnuj3WohG+LugzXiQRDeM3XYXlULv4dp5VFYC)format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff)format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2)format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff)format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2)format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff)format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf)format("truetype")}.katex{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:"0.17.0"}.katex .katex-mathml{clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.newline{display:block}.katex .base{white-space:nowrap;width:min-content;position:relative}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;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 .vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{flex-direction:row;display:inline-flex}.katex .thinbox{width:0;max-width:0}.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 .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .smash{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.root{margin-left:.277778em;margin-right:-.555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.833333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.33333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.66667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.857143em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.55429em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.33333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.76444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.416667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.833333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.833333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.833333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.833173em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.833601em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{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 .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{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 .stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .stretchy:after,.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 .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>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}.sfx-landing{--cyan:#46caf0;--pink:#f6708e;--amber:#f5a623;--amber-text:#8a5f00;--purple:#6a5acd;background:var(--bg-main);color:var(--text-primary);font-family:var(--font-display);min-height:100dvh;line-height:1.55}.sfx-landing img{max-width:100%;display:block}.sfx-landing h1,.sfx-landing h2,.sfx-landing h3{letter-spacing:-.02em}.sfx-landing section{margin-bottom:28px}.sfx-landing .wrap{max-width:1060px;margin:0 auto;padding:0 20px}.sfx-landing .card{background:var(--bg-card);border:1px solid var(--border-color);box-shadow:var(--shadow-card-sm);border-radius:20px}.sfx-landing .btn{font-size:16px;font-weight:800;font-family:var(--font-display);cursor:pointer;border:none;border-radius:14px;justify-content:center;align-items:center;gap:8px;padding:14px 28px;text-decoration:none;transition:transform .15s;display:inline-flex}.sfx-landing .btn:active{transform:translateY(1px)}.sfx-landing .btn-ghost{background:var(--bg-card);border:1.5px solid var(--border-color);color:var(--text-primary)}.sfx-landing .btn-cta{box-shadow:0 8px 20px #2aa4d652}.sfx-landing .grad-cta{color:#fff;background:linear-gradient(135deg,#0e7ead 0%,#0e74a8 100%)}.sfx-landing .grad-brand-text{background:linear-gradient(90deg,#49b7e8 0%,#8f8fd0 45%,#f4708e 100%);color:#0000;-webkit-background-clip:text;background-clip:text}.sfx-landing header{z-index:40;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);background:#ffffffeb;position:sticky;top:0}.sfx-landing .nav{justify-content:space-between;align-items:center;padding-top:13px;padding-bottom:13px;display:flex}.sfx-landing .brand{align-items:center;gap:10px;font-size:21px;font-weight:900;display:flex}.sfx-landing .lang-toggle{background:var(--bg-main);border:1px solid var(--border-color);border-radius:999px;gap:2px;padding:3px;display:flex}.sfx-landing .lang-toggle .lt-opt{font-family:var(--font-display);color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:999px;padding:5px 11px;font-size:12px;font-weight:800}.sfx-landing .lang-toggle .lt-opt.on{background:var(--bg-card);color:var(--text-primary);box-shadow:0 2px 6px #2a2f451a}.sfx-landing .lang-toggle .lt-opt:focus-visible{outline:2px solid var(--accent-primary-text);outline-offset:2px}.sfx-landing .hero{grid-template-columns:1.05fr .95fr;align-items:center;gap:44px;padding:56px 0 44px;display:grid}.sfx-landing .hero>*{min-width:0}.sfx-landing .hero h1{margin-bottom:14px;font-size:clamp(2.3rem,3.9vw,3.2rem);font-weight:900;line-height:1.12}.sfx-landing .hero .sub{color:var(--text-secondary);max-width:34rem;margin-bottom:10px;font-size:18px;font-weight:600}.sfx-landing .hero-visual{position:relative}.sfx-landing .hero-photo{box-shadow:var(--shadow-card);aspect-ratio:4/3.4;object-fit:cover;border-radius:22px;width:100%}.sfx-landing .ask-box{box-shadow:var(--shadow-card);border-radius:18px;margin-bottom:14px;padding:14px 16px}.sfx-landing .ask-box textarea{resize:none;width:100%;font-family:var(--font-display);color:var(--text-primary);background:0 0;border:none;outline:none;font-size:15px;font-weight:600}.sfx-landing .ask-box textarea::placeholder{color:var(--text-muted);font-weight:600}.sfx-landing .ask-chips{flex-wrap:wrap;align-items:center;gap:8px;margin:8px 0 12px;display:flex}.sfx-landing .ask-chips button{border:1px solid var(--border-color);background:var(--bg-main);color:var(--text-secondary);font-family:var(--font-display);cursor:pointer;border-radius:999px;padding:5px 12px;font-size:12px;font-weight:700}.sfx-landing .ask-chips button:hover{background:var(--bg-card-hover)}.sfx-landing .ask-tools{border-top:1px solid var(--border-color);flex-wrap:wrap;align-items:center;gap:8px;padding-top:12px;display:flex}.sfx-landing .ask-tools .tool{border:1px solid var(--border-color);background:var(--bg-card);cursor:pointer;border-radius:10px;place-items:center;width:38px;height:34px;font-size:15px;display:grid}.sfx-landing .ask-tools .tool svg{width:17px;height:17px;stroke:var(--text-secondary)}.sfx-landing .ask-lang{color:var(--text-muted);white-space:nowrap;margin-left:auto;margin-right:8px;font-size:12px;font-weight:800}.sfx-landing .ask-lang-toggle{margin-left:auto}.sfx-landing .ask-solve{white-space:nowrap;margin-left:auto;padding:10px 20px;font-size:14.5px}.sfx-landing .ask-solve:disabled{opacity:.65;cursor:progress}.sfx-landing .ask-consent{color:var(--text-muted);margin-top:10px;font-size:12px;font-weight:600}.sfx-landing .ask-consent a{color:var(--text-secondary);font-weight:700;text-decoration:underline}.sfx-landing .ask-box.needs-input{box-shadow:0 0 0 2px var(--pink), var(--shadow-card)}.sfx-landing .ask-box.needs-input textarea::placeholder{color:var(--brand-pink-text);font-weight:800}@media (prefers-reduced-motion:no-preference){.sfx-landing .ask-box.needs-input{animation:.32s ease-in-out 2 sfxNudge}}@keyframes sfxNudge{0%,to{transform:translate(0)}25%{transform:translate(-4px)}75%{transform:translate(4px)}}.sfx-landing .ask-error{color:var(--accent-error);margin-top:10px;font-size:13px;font-weight:700}.sfx-landing .trust{color:var(--text-secondary);flex-wrap:wrap;justify-content:center;gap:10px 26px;padding:14px 18px;font-size:13.5px;font-weight:800;display:flex}.sfx-landing .trust>span{align-items:center;gap:7px;display:flex}.sfx-landing .trust b{color:var(--text-primary)}.sfx-landing .steps{grid-template-columns:repeat(4,1fr);gap:14px;display:grid}.sfx-landing .step{padding:18px;position:relative}.sfx-landing .step .num{color:#fff;border-radius:50%;place-items:center;width:30px;height:30px;margin-bottom:10px;font-size:13px;font-weight:900;display:grid}.sfx-landing .step h3{margin-bottom:5px;font-size:15.5px;font-weight:800}.sfx-landing .step p{color:var(--text-secondary);font-size:13.5px;font-weight:600}.sfx-landing .leader-note{color:var(--text-secondary);text-align:center;background:linear-gradient(90deg,#f5a6231a,#6a5acd14);margin-top:12px;padding:13px 18px;font-size:14px;font-weight:700}.sfx-landing .leader-note b{color:var(--text-primary)}.sfx-landing .features{grid-template-columns:1fr 1fr;gap:16px;display:grid}.sfx-landing .feature{overflow:hidden}.sfx-landing .feature img{aspect-ratio:16/8.4;object-fit:cover;width:100%}.sfx-landing .feature .fbody{padding:18px 20px}.sfx-landing .feature h3{align-items:center;gap:8px;margin-bottom:6px;font-size:17px;font-weight:800;display:flex}.sfx-landing .feature p{color:var(--text-secondary);font-size:14px;font-weight:600}.sfx-landing .tintdot{border-radius:3px;width:10px;height:10px;display:inline-block}.sfx-landing details{border-bottom:1px solid var(--border-color);padding:14px 4px}.sfx-landing details:last-child{border-bottom:none}.sfx-landing summary{cursor:pointer;justify-content:space-between;align-items:center;gap:12px;font-size:15px;font-weight:800;list-style:none;display:flex}.sfx-landing summary::-webkit-details-marker{display:none}.sfx-landing summary:after{content:"+";color:var(--text-muted);font-size:19px;font-weight:700}.sfx-landing details[open] summary:after{content:"–"}.sfx-landing details p{color:var(--text-secondary);padding-top:8px;font-size:14px;font-weight:600}.sfx-landing .final{text-align:center;border:1px solid var(--border-color);background:linear-gradient(135deg,#46caf01a,#f6708e14);border-radius:24px;padding:44px 30px}.sfx-landing .final h2{margin-bottom:8px;font-size:clamp(1.5rem,3vw,2rem);font-weight:900}.sfx-landing .final p{color:var(--text-secondary);margin-bottom:0;font-weight:700}.sfx-landing footer{border-top:1px solid var(--border-color);text-align:center;color:var(--text-muted);margin-top:36px;padding:26px 0 40px;font-size:13px;font-weight:600}.sfx-landing footer nav{flex-wrap:wrap;justify-content:center;gap:18px;margin-bottom:10px;display:flex}.sfx-landing footer a{color:var(--text-secondary);font-weight:700;text-decoration:none}.sfx-landing footer a:hover{text-decoration:underline}.sfx-landing .sticky-cta{z-index:50;-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0;border-top:none;justify-content:flex-end;padding:0 40px 26px;display:flex;position:fixed;bottom:0;left:0;right:0}.sfx-landing .sticky-cta .btn{width:auto;min-width:280px;box-shadow:0 14px 34px #2aa4d659}@media (width<=820px){.sfx-landing .wrap{max-width:none}.sfx-landing .hero{grid-template-columns:1fr;gap:28px;padding:26px 0 30px}.sfx-landing .hero h1{font-size:clamp(2rem,4.6vw,2.9rem)}.sfx-landing .hero .sub{font-size:17px}.sfx-landing .steps{grid-template-columns:repeat(2,1fr)}.sfx-landing .features{grid-template-columns:1fr}.sfx-landing footer{padding-bottom:120px}.sfx-landing .sticky-cta{padding:10px 16px calc(10px + env(safe-area-inset-bottom));-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:1px solid var(--border-color);background:#fffffff2;display:block}.sfx-landing .sticky-cta .btn{width:100%;min-width:0}}.bug-fab{z-index:70;background:var(--bg-card);border:1.5px solid var(--border-color);width:44px;height:44px;box-shadow:var(--shadow-card);color:#e4576f;cursor:pointer;border-radius:50%;justify-content:center;align-items:center;padding:0;display:flex;position:fixed;bottom:24px;left:24px}.bug-fab img{width:26px;height:26px;display:block}.bug-fab:hover{background:var(--bg-card-hover)}.bug-fab:focus-visible{outline:2px solid var(--accent-primary-text);outline-offset:3px}.bug-fab{bottom:24px}@media (width<=820px){.bug-fab{bottom:calc(96px + env(safe-area-inset-bottom))}}.bug-modal-overlay{z-index:90;background:#141e3273;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.bug-modal{text-align:center;background:var(--bg-card);border:1px solid var(--border-color);width:100%;max-width:340px;box-shadow:var(--shadow-card);font-family:var(--font-display);border-radius:20px;padding:26px 22px}.bug-modal .bm-emoji{margin:0 auto 10px;display:block}.bug-modal h3{color:var(--text-primary);margin-bottom:8px;font-size:18px;font-weight:900}.bug-modal p{color:var(--text-secondary);margin-bottom:20px;font-size:14px;font-weight:600;line-height:1.5}.bug-modal .bm-btns{gap:10px;display:flex}.bug-modal .bm-btns button{font-family:var(--font-display);cursor:pointer;border:none;border-radius:14px;flex:1;padding:12px;font-size:16px;font-weight:800}.bug-modal .bm-no{background:var(--bg-card);border:1.5px solid var(--border-color);color:var(--text-primary)}.bug-modal .bm-yes{color:#fff;background:linear-gradient(135deg,#0e7ead 0%,#0e74a8 100%);box-shadow:0 8px 20px #2aa4d652}