@import url("https://fonts.googleapis.com/css2?family=Anuphan:wght@300;400;500;600;700&family=Sarabun:ital,wght@0,300;0,400;0,500;0,600;1,400&display=swap");*,:after,:before{--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-translate-x:0;--tw-translate-y:0;--tw-rotate:0;--tw-skew-x:0;--tw-skew-y:0;--tw-scale-x:1;--tw-scale-y:1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness:proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-color:rgba(59,130,246,.5);--tw-ring-offset-shadow:0 0 #0000;--tw-ring-shadow:0 0 #0000;--tw-shadow:0 0 #0000;--tw-shadow-colored:0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }::backdrop{--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-translate-x:0;--tw-translate-y:0;--tw-rotate:0;--tw-skew-x:0;--tw-skew-y:0;--tw-scale-x:1;--tw-scale-y:1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness:proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-color:rgba(59,130,246,.5);--tw-ring-offset-shadow:0 0 #0000;--tw-ring-shadow:0 0 #0000;--tw-shadow:0 0 #0000;--tw-shadow-colored:0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }

/*
! tailwindcss v3.4.19 | MIT License | https://tailwindcss.com
*/*,:after,:before{box-sizing:border-box;border:0 solid #e5e7eb}:after,:before{--tw-content:""}:host,html{line-height:1.5;-webkit-text-size-adjust:100%;-moz-tab-size:4;-o-tab-size:4;tab-size:4;font-family:ui-sans-serif,system-ui,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji;font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent}body{margin:0;line-height:inherit}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,pre,samp{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-feature-settings:normal;font-variation-settings:normal;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}button,input,optgroup,select,textarea{font-family:inherit;font-feature-settings:inherit;font-variation-settings:inherit;font-size:100%;font-weight:inherit;line-height:inherit;letter-spacing:inherit;color:inherit;margin:0;padding:0}button,select{text-transform:none}button,input:where([type=button]),input:where([type=reset]),input:where([type=submit]){-webkit-appearance:button;background-color:transparent;background-image:none}:-moz-focusring{outline:auto}:-moz-ui-invalid{box-shadow:none}progress{vertical-align:baseline}::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}summary{display:list-item}blockquote,dd,dl,figure,h1,h2,h3,h4,h5,h6,hr,p,pre{margin:0}fieldset{margin:0}fieldset,legend{padding:0}menu,ol,ul{list-style:none;margin:0;padding:0}dialog{padding:0}textarea{resize:vertical}input::-moz-placeholder,textarea::-moz-placeholder{opacity:1;color:#9ca3af}input::placeholder,textarea::placeholder{opacity:1;color:#9ca3af}[role=button],button{cursor:pointer}:disabled{cursor:default}audio,canvas,embed,iframe,img,object,svg,video{display:block;vertical-align:middle}img,video{max-width:100%;height:auto}[hidden]:where(:not([hidden=until-found])){display:none}.card{background:var(--color-surface);border:3px solid var(--color-border);border-radius:12px;box-shadow:var(--shadow);transition:transform .15s cubic-bezier(.34,1.56,.64,1),box-shadow .15s ease}.card:hover{transform:translate(-2px,-2px);box-shadow:var(--shadow-lg)}.card-bg{background:var(--color-bg)}.btn-primary,.card-bg{border:3px solid var(--color-border);border-radius:12px;box-shadow:var(--shadow)}.btn-primary{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;background:var(--color-primary);color:#fff;font-family:Anuphan,sans-serif;font-weight:600;font-size:1rem;cursor:pointer;transition:transform .15s cubic-bezier(.34,1.56,.64,1),box-shadow .15s ease;text-decoration:none}.btn-primary:hover{transform:translate(-2px,-2px);box-shadow:var(--shadow-lg)}.btn-primary:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--color-border)}.btn-secondary{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;background:var(--color-bg);color:var(--color-text);font-family:Anuphan,sans-serif;font-weight:600;font-size:1rem;border:3px solid var(--color-border);border-radius:12px;box-shadow:var(--shadow);cursor:pointer;transition:transform .15s cubic-bezier(.34,1.56,.64,1),box-shadow .15s ease;text-decoration:none}.btn-secondary:hover{transform:translate(-2px,-2px);box-shadow:var(--shadow-lg)}.badge{display:inline-flex;align-items:center;gap:.25rem;padding:.25rem .75rem;font-size:.75rem;font-weight:600;border:2px solid var(--color-border);border-radius:9999px;box-shadow:2px 2px 0 var(--color-border)}.badge-primary{background:var(--color-primary);color:#fff}.badge-secondary{background:var(--color-secondary);color:var(--color-text)}.badge-accent{background:var(--color-accent);color:var(--color-text)}.section-label{display:inline-flex;align-items:center;gap:.375rem;padding:.375rem 1rem;background:var(--color-surface-raised);border:2px solid var(--color-border);border-radius:9999px;font-size:.8125rem;font-weight:600;color:var(--color-text-muted);box-shadow:2px 2px 0 var(--color-border);margin-bottom:1rem}.hover-lift{transition:transform .15s cubic-bezier(.34,1.56,.64,1),box-shadow .15s ease}.hover-lift:hover{transform:translate(-2px,-2px);box-shadow:var(--shadow-lg)}.hover-bg:hover{background:var(--color-surface-raised)!important}.prose-doodle h2{font-size:1.125rem;margin:1.25rem 0 .5rem;letter-spacing:-.01em}.prose-doodle h2,.prose-doodle h3{font-family:Anuphan,sans-serif;font-weight:700;color:var(--color-text)}.prose-doodle h3{font-size:1rem;margin:1rem 0 .375rem}.prose-doodle p{font-family:Sarabun,sans-serif;font-size:.9375rem;line-height:1.75;color:var(--color-text-muted);margin:0 0 .625rem}.prose-doodle ol,.prose-doodle ul{padding-left:1.25rem;margin:.5rem 0 .75rem;display:flex;flex-direction:column;gap:.25rem}.prose-doodle li{font-family:Sarabun,sans-serif;font-size:.9375rem;line-height:1.7;color:var(--color-text-muted)}.prose-doodle a{color:var(--color-primary);text-decoration:underline;text-underline-offset:2px}.prose-doodle hr{border:none;border-top:2px solid var(--color-border-light);margin:1rem 0}.prose-doodle strong{font-weight:700;color:var(--color-text)}.prose-doodle em{font-style:italic}.prose-doodle h2:first-child,.prose-doodle h3:first-child,.prose-doodle p:first-child{margin-top:0}.visible{visibility:visible}.collapse{visibility:collapse}.static{position:static}.fixed{position:fixed}.absolute{position:absolute}.relative{position:relative}.sticky{position:sticky}.top-0{top:0}.z-50{z-index:50}.mx-auto{margin-left:auto;margin-right:auto}.mb-10{margin-bottom:2.5rem}.mb-12{margin-bottom:3rem}.mb-3{margin-bottom:.75rem}.mb-6{margin-bottom:1.5rem}.mb-8{margin-bottom:2rem}.mt-16{margin-top:4rem}.block{display:block}.inline-block{display:inline-block}.inline{display:inline}.flex{display:flex}.inline-flex{display:inline-flex}.table{display:table}.grid{display:grid}.hidden{display:none}.h-16{height:4rem}.max-w-2xl{max-width:42rem}.max-w-3xl{max-width:48rem}.max-w-4xl{max-width:56rem}.max-w-5xl{max-width:64rem}.max-w-6xl{max-width:72rem}.transform{transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.resize{resize:both}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.flex-col{flex-direction:column}.flex-wrap{flex-wrap:wrap}.items-start{align-items:flex-start}.items-end{align-items:flex-end}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-1{gap:.25rem}.gap-1\.5{gap:.375rem}.gap-2{gap:.5rem}.gap-3{gap:.75rem}.gap-4{gap:1rem}.gap-5{gap:1.25rem}.gap-6{gap:1.5rem}.gap-8{gap:2rem}.overflow-hidden{overflow:hidden}.rounded-lg{border-radius:16px}.border{border-width:1px}.px-4{padding-left:1rem;padding-right:1rem}.py-12{padding-top:3rem;padding-bottom:3rem}.py-14{padding-top:3.5rem;padding-bottom:3.5rem}.text-center{text-align:center}.uppercase{text-transform:uppercase}.italic{font-style:italic}.tabular-nums{--tw-numeric-spacing:tabular-nums;font-variant-numeric:var(--tw-ordinal) var(--tw-slashed-zero) var(--tw-numeric-figure) var(--tw-numeric-spacing) var(--tw-numeric-fraction)}.underline{text-decoration-line:underline}.opacity-50{opacity:.5}.shadow{--tw-shadow:0 1px 3px 0 rgba(0,0,0,.1),0 1px 2px -1px rgba(0,0,0,.1);--tw-shadow-colored:0 1px 3px 0 var(--tw-shadow-color),0 1px 2px -1px var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow,0 0 #0000),var(--tw-ring-shadow,0 0 #0000),var(--tw-shadow)}.outline{outline-style:solid}.blur{--tw-blur:blur(8px)}.blur,.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-filter{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,text-decoration-color,fill,stroke,opacity,box-shadow,transform,filter,backdrop-filter;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.transition-opacity{transition-property:opacity;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.ease-in-out{transition-timing-function:cubic-bezier(.4,0,.2,1)}:root{--color-primary:#5f63eb;--color-primary-light:#8b8ef3;--color-primary-dark:#4446c8;--color-secondary:#61d1a8;--color-secondary-light:#8cdfc2;--color-secondary-dark:#3db888;--color-accent:#ffa9a3;--color-accent-light:#ffccc9;--color-accent-dark:#e07f79;--color-bg:#fffef5;--color-surface:#fff;--color-surface-raised:#f5f4ec;--color-text:#333;--color-text-muted:#666;--color-text-subtle:#999;--color-border:#333;--color-border-light:#ccc;--color-badge-basic:#ffe499;--color-badge-coming-soon:#d7a3ff;--color-badge-free-course:#f1ffd6;--color-badge-individual:#a3e0ff;--color-surface-grey:#f2f2f2;--color-cover-coming-soon:#5c6070;--shadow:4px 4px 0px var(--color-border);--shadow-sm:2px 2px 0px var(--color-border);--shadow-lg:6px 6px 0px var(--color-border)}html{font-family:Anuphan,sans-serif;background-color:var(--color-bg);color:var(--color-text);scroll-behavior:smooth}@media (max-width:1023px){.lesson-layout{height:auto!important}.lesson-layout,.lesson-main{overflow:visible!important}}@media (max-width:480px){.lesson-nav-btn{width:100%;flex:none!important}}.sidebar-overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);backdrop-filter:blur(2px);z-index:40}.lesson-sidebar-drawer{position:fixed;top:0;right:0;bottom:0;width:300px;max-width:88vw;z-index:50;display:flex;flex-direction:column;transform:translateX(100%);transition:transform .28s cubic-bezier(.4,0,.2,1)}.lesson-sidebar-drawer--open{transform:translateX(0)}.sidebar-drawer-close{display:flex;align-items:center;gap:.5rem;padding:.875rem 1.25rem;background:var(--color-surface-raised);border:none;border-bottom:3px solid var(--color-border);cursor:pointer;font-family:Anuphan,sans-serif;font-weight:600;font-size:.875rem;color:var(--color-text-muted);flex-shrink:0;transition:background .15s ease}.sidebar-drawer-close:hover{background:var(--color-surface)}.sidebar-toggle-btn{display:flex;align-items:center;gap:.375rem;padding:.4375rem .875rem;background:var(--color-primary);color:#fff;border:2px solid var(--color-border);border-radius:8px;box-shadow:3px 3px 0 var(--color-border);cursor:pointer;font-family:Anuphan,sans-serif;font-weight:700;font-size:.8125rem;transition:transform .15s ease,box-shadow .15s ease;white-space:nowrap;flex-shrink:0}.sidebar-toggle-btn:hover{transform:translate(-2px,-2px);box-shadow:5px 5px 0 var(--color-border)}@media (min-width:1024px){.lesson-sidebar-drawer{position:static;width:320px;max-width:none;flex-shrink:0;height:100%;transform:none!important;transition:none;z-index:auto}.sidebar-drawer-close,.sidebar-overlay,.sidebar-toggle-btn{display:none!important}}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--color-surface-raised)}::-webkit-scrollbar-thumb{background:var(--color-border-light);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.hover\:opacity-90:hover{opacity:.9}@media (min-width:640px){.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.sm\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.sm\:px-6{padding-left:1.5rem;padding-right:1.5rem}}@media (min-width:768px){.md\:col-span-2{grid-column:span 2/span 2}.md\:flex{display:flex}.md\:inline-flex{display:inline-flex}.md\:hidden{display:none}.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.md\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (min-width:1024px){.lg\:col-span-1{grid-column:span 1/span 1}.lg\:col-span-2{grid-column:span 2/span 2}.lg\:col-span-3{grid-column:span 3/span 3}.lg\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.lg\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.lg\:grid-cols-5{grid-template-columns:repeat(5,minmax(0,1fr))}}@media (min-width:1280px){.xl\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}}