/*! 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)))){*,::backdrop,:after,:before{--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-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}}}@layer theme{:host,:root{--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Noto Sans",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";--font-mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,::backdrop,:after,:before{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}:host,html{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Noto Sans",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}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;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,pre,samp{font-family:var(--default-mono-font-family,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}menu,ol,ul{list-style:none}audio,canvas,embed,iframe,img,object,svg,video{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,optgroup,select,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab,red,red)){::placeholder{color:color-mix(in oklab,currentcolor 50%,transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit,::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-millisecond-field,::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.block{display:block}.grid{display:grid}.inline{display:inline}.table{display:table}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.border{border-style:var(--tw-border-style);border-width:1px}.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,)}}:root{--navy:#061f4a;--deep:#00102d;--yellow:#ffd22e;--cream:#fff7dc;--ink:#101828;--muted:#526076;--border:#cbd5e1;--success:#087443;--danger:#a5120a;--surface:#fff;--surface-raised:#fff;--bg:#f5f7fb;--primary:#05275e;--on-primary:#fff;--eyebrow:#244f96;--focus:#1769e0;--radius:22px;--shadow:0 14px 40px #061f4a14}@media (prefers-color-scheme:dark){:root{--surface:#10284d;--surface-raised:#142f58;--bg:#06152d;--ink:#f8fafc;--muted:#c6d0df;--border:#42618f;--cream:#122b50;--primary:#ffd44a;--on-primary:#09172e;--eyebrow:#9fc3ff;--focus:#ffd44a;--success:#66e0a3;--danger:#ff9b94;--shadow:0 18px 50px #0000003d}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);margin:0;font-family:Inter,Noto Sans Myanmar,system-ui,sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}.container{width:min(1160px,100% - 32px);margin:auto}.skip{background:var(--yellow);color:var(--deep);z-index:100;padding:10px 16px;position:fixed;top:-60px;left:12px}.skip:focus{top:12px}.btn{border:2px solid var(--primary);cursor:pointer;border-radius:14px;justify-content:center;align-items:center;gap:8px;min-height:48px;padding:0 20px;font-weight:800;transition:transform .18s,box-shadow .18s,background .18s;display:inline-flex}.btn:hover{transform:translateY(-1px)}.btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--focus);outline-offset:3px}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-primary{background:var(--primary);color:var(--on-primary)}.btn-accent{background:var(--yellow);border-color:var(--yellow);color:var(--deep)}.btn-secondary{background:var(--surface);color:var(--ink);border-color:var(--border)}.card{background:var(--surface-raised);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.eyebrow{letter-spacing:.12em;text-transform:uppercase;color:var(--eyebrow);font-size:.78rem;font-weight:900}.muted{color:var(--muted)}.grid{gap:20px;display:grid}.site-header{z-index:20;background:var(--bg);position:sticky;top:0}@supports (color:color-mix(in lab,red,red)){.site-header{background:color-mix(in srgb,var(--bg) 92%,transparent)}}.site-header{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}.nav{justify-content:space-between;gap:20px;min-height:74px}.brand,.nav{align-items:center;display:flex}.brand{color:var(--ink);gap:10px;font-weight:950}.brand-mark{background:var(--yellow);width:38px;height:38px;color:var(--deep);border-radius:12px;place-items:center;display:grid}.navlinks{gap:22px;font-weight:750;display:flex}.hero,.navlinks{align-items:center}.hero{grid-template-columns:1.05fr .95fr;gap:48px;padding:72px 0 56px;display:grid}.hero h1{letter-spacing:-.055em;color:var(--ink);margin:14px 0 24px;font-size:clamp(2.5rem,6vw,5.6rem);line-height:.98}.hero p{max-width:600px;font-size:clamp(1rem,2vw,1.22rem)}.actions{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}.code-window{background:var(--deep);color:#f0f6ff;box-shadow:18px 18px 0 var(--yellow);border:1px solid #355686;border-radius:30px;overflow:hidden;transform:rotate(1deg)}.code-top{border-bottom:1px solid #45638e;justify-content:space-between;padding:14px 18px;display:flex}.code-body{white-space:pre-wrap;min-height:320px;padding:22px;font:14px/1.75 ui-monospace,monospace}.code-body .tag{color:#8cddff}.code-body .attr{color:#ffe889}.result{color:#12203b;background:#fff;border-radius:16px;margin:0 22px 22px;padding:20px}.section{padding:76px 0}.section h1{letter-spacing:-.04em;margin:10px 0 16px;font-size:clamp(2.25rem,5vw,4rem);line-height:1.08}.section h2{margin:8px 0 14px;font-size:clamp(2rem,4vw,3.2rem);line-height:1.1}.course-grid{grid-template-columns:repeat(3,1fr)}.course-card{flex-direction:column;min-height:270px;display:flex}.course-icon{background:var(--cream);border:1px solid var(--border);border-radius:18px;place-items:center;width:62px;height:62px;font:900 2rem/1 ui-monospace;display:grid}.course-card .btn{margin-top:auto}.steps{grid-template-columns:repeat(4,1fr)}.step-num{color:var(--primary);font-size:2rem;font-weight:950}.footer{background:var(--deep);color:#fff;margin-top:40px;padding:40px 0}.app-shell{grid-template-columns:250px 1fr;min-height:calc(100vh - 74px);display:grid}.sidebar{background:var(--deep);color:#fff;padding:28px 18px}.sidebar a{border-radius:12px;margin:4px 0;padding:13px 14px;display:block}.sidebar a:hover,.sidebar a[aria-current]{background:#244b82}.main{min-width:0;padding:36px}.stats{grid-template-columns:repeat(4,1fr)}.stat strong{font-size:2rem;display:block}.auth{place-items:center;min-height:calc(100vh - 74px);padding:32px;display:grid}.auth-card{width:min(460px,100%)}.field{gap:7px;margin:16px 0;display:grid}.field input{border:1px solid var(--border);background:var(--surface);min-height:48px;color:var(--ink);border-radius:12px;padding:0 14px}.error{color:var(--danger);font-weight:700}.error.card{background:var(--danger)}@supports (color:color-mix(in lab,red,red)){.error.card{background:color-mix(in srgb,var(--danger) 9%,var(--surface))}}.success{color:var(--success);font-weight:700}.empty-state{max-width:720px;padding:34px}.empty-state h2{font-size:clamp(1.6rem,3vw,2.3rem)}.lesson-list{margin:24px 0;padding:0;list-style:none}.lesson-list li+li{border-top:1px solid var(--border)}.lesson-link{justify-content:space-between;align-items:center;gap:18px;padding:18px 0;font-weight:800;display:flex}.mobile-nav{display:none}@media (max-width:800px){.navlinks a:not(.nav-cta){display:none}.hero{grid-template-columns:1fr;padding-top:42px}.code-window{box-shadow:10px 10px 0 var(--yellow);transform:none}.course-grid,.stats,.steps{grid-template-columns:1fr}.section{padding:52px 0}.app-shell{display:block}.sidebar{display:none}.main{padding:24px 16px 90px}.mobile-nav{background:var(--surface);border-top:1px solid var(--border);padding:8px 8px calc(8px + env(safe-area-inset-bottom));z-index:30;grid-template-columns:repeat(4,1fr);display:grid;position:fixed;bottom:0;left:0;right:0}.mobile-nav a{text-align:center;min-height:48px;font-size:.75rem;font-weight:800}.hero h1{font-size:clamp(2.8rem,14vw,4.5rem)}}@media (max-width:420px){.container{width:min(100% - 24px,1160px)}.card{padding:20px}.btn{width:100%}.actions{display:grid}.code-body{padding:18px;font-size:12px}.result{margin:0 16px 16px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!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-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}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.nav-button,.navlinks>a{display:inline-flex;align-items:center;gap:7px}.nav-button{border:0;background:transparent;color:var(--ink);font-weight:750;cursor:pointer;padding:10px}.profile-link{background:var(--cream);border:1px solid var(--border);padding:8px 13px;border-radius:10px}.tutorial-hero{padding:76px 0;background:linear-gradient(135deg,#e9f8f0,#f8fbff 55%,#fff4cf);border-bottom:1px solid var(--border)}.tutorial-hero h1{font-size:clamp(2.6rem,6vw,5.2rem);line-height:1;letter-spacing:-.055em;margin:10px 0 20px;color:#10243f}.tutorial-hero p{max-width:760px;color:#3c4c61;font-size:1.15rem}.search-form{display:flex;align-items:center;gap:10px;background:#fff;border:2px solid #a9b7c9;border-radius:13px;padding:5px 5px 5px 15px;max-width:720px;margin:26px 0;color:#24354d}.search-form:focus-within{border-color:#0f6749;box-shadow:0 0 0 3px rgba(15,103,73,.16)}.search-form input{min-width:0;flex:1;border:0;outline:0;background:transparent;color:#172338;height:44px}.search-form button{height:44px;border:0;border-radius:9px;background:#126b4d;color:#fff;font-weight:800;padding:0 22px;cursor:pointer}.course-tile{padding:30px;border:1px solid var(--border);border-radius:18px;background:var(--surface);min-height:285px;display:flex;flex-direction:column;box-shadow:0 6px 24px rgba(6,31,74,.06)}.course-tile h2{font-size:1.8rem;margin:20px 0 6px}.course-tile p{color:var(--muted)}.course-action{display:flex;align-items:center;justify-content:space-between;margin-top:auto;border-top:1px solid var(--border);padding-top:18px;font-weight:850;color:var(--eyebrow)}.course-html{--course:#b93818;--course-soft:#fff0eb}.course-css{--course:#155d94;--course-soft:#eaf5ff}.course-javascript{--course:#715a00;--course-soft:#fff8cf}.course-tile .course-icon{background:var(--course-soft);color:var(--course);border-color:color-mix(in srgb,var(--course) 30%,transparent)}.reference-layout{display:grid;grid-template-columns:280px minmax(0,1fr);min-height:calc(100vh - 74px)}.reference-sidebar{position:sticky;top:74px;height:calc(100vh - 74px);overflow-y:auto;background:#f1f4f8;border-right:1px solid #c9d2df;padding:18px 12px 50px;color:#172338}.reference-course,.reference-home,.reference-topic{display:block;border-radius:7px}.reference-home{font-weight:900;padding:10px 12px;margin-bottom:12px;background:#0d5f45;color:#fff}.reference-course{font-weight:900;padding:12px;margin-top:12px}.reference-course span{display:inline-block;min-width:32px}.reference-module{font-size:.72rem;font-weight:900;text-transform:uppercase;letter-spacing:.08em;color:#64748b;margin:12px 12px 4px}.reference-topic{font-size:.9rem;padding:7px 12px 7px 20px;color:#344256}.reference-topic:hover,.reference-topic[aria-current=page]{background:#dce5f1;color:#0a4b37;font-weight:800}.reference-content{min-width:0}.course-banner{padding:58px clamp(24px,6vw,78px);background:var(--course-soft);border-bottom:1px solid var(--border)}.course-banner h1{font-size:clamp(2.6rem,6vw,5rem);line-height:1;margin:12px 0;color:#142137}.course-banner>p{max-width:700px;font-size:1.12rem;color:#3c4c61}.topic-index{padding:42px clamp(20px,6vw,78px);max-width:1200px}.topic-group{margin-bottom:52px}.topic-group>h2{font-size:2rem;margin-bottom:4px}.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:20px}.topic-card{display:flex;justify-content:space-between;gap:16px;padding:20px;border:1px solid var(--border);background:var(--surface);border-radius:12px;transition:border .15s,transform .15s}.topic-card:hover{border-color:var(--course,#1769aa);transform:translateY(-2px)}.topic-card h3{margin:0 0 6px;font-size:1.08rem}.topic-card p{margin:0 0 12px;color:var(--muted);font-size:.92rem}.topic-card small{display:flex;align-items:center;gap:5px;color:var(--muted)}.lesson-article{min-width:0;padding:34px clamp(22px,6vw,82px) 80px;max-width:1100px}.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:.9rem;margin-bottom:36px}.lesson-article h1{font-size:clamp(2.5rem,6vw,4.6rem);line-height:1.02;letter-spacing:-.05em;margin:12px 0 18px}.lesson-summary{font-size:1.22rem;color:var(--muted);max-width:760px}.meta{display:inline-flex;align-items:center;gap:7px;color:var(--muted);margin:8px 0 28px}.lesson-copy>section:not(.lesson-lab){border-top:1px solid var(--border);padding:28px 0}.lesson-copy h2{font-size:1.6rem}.lesson-copy p{font-size:1.08rem;max-width:780px}.lesson-lab{border:1px solid #243b5f;border-radius:14px;overflow:hidden;background:#08172d;margin:30px 0;color:#eef5ff}.lab-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:12px 14px;border-bottom:1px solid #304a73}.mini-button{display:inline-flex;align-items:center;gap:5px;border:1px solid #60789e;background:#172e50;color:#fff;padding:7px 10px;border-radius:7px;cursor:pointer;margin-left:7px}.mini-button.run{background:#16865b;border-color:#16865b}.lab-grid{display:grid;grid-template-columns:1fr 1fr;min-height:390px}.lab-grid textarea{width:100%;min-height:390px;border:0;border-right:1px solid #304a73;resize:vertical;background:#08172d;color:#eef5ff;padding:18px;font:14px/1.65 ui-monospace,SFMono-Regular,monospace;outline:none}.lab-grid iframe{width:100%;height:100%;border:0;background:#fff}.lab-hint{font-size:.78rem;color:#b6c5da;margin:0;padding:8px 14px;border-top:1px solid #304a73}.lesson-pagination{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--border);padding-top:28px;margin-top:42px}.lesson-pagination a{display:flex;align-items:center;gap:7px;color:var(--eyebrow);font-weight:850}.search-results{display:grid;gap:12px;margin-top:30px}.search-result{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;padding:20px;border:1px solid var(--border);background:var(--surface);border-radius:12px}.search-result h2{font-size:1.15rem;margin:0}.search-result p{color:var(--muted);margin:4px 0}.forgot-link{display:block;text-align:center;margin-top:12px;color:var(--eyebrow);font-weight:750}@media(max-width:900px){.reference-layout{display:block}.reference-sidebar{position:relative;top:auto;height:auto;display:flex;overflow-x:auto;gap:8px;padding:10px;border-right:0;border-bottom:1px solid #c9d2df}.reference-sidebar section{display:contents}.reference-module,.reference-sidebar div,.reference-topic{display:none}.reference-course,.reference-home{white-space:nowrap;margin:0;padding:9px 12px}.lab-grid,.topic-grid{grid-template-columns:1fr}.lab-grid textarea{border-right:0;border-bottom:1px solid #304a73;min-height:300px}.lab-grid iframe{min-height:320px}.nav-button,.navlinks>a:not(.nav-cta){display:none}}@media(max-width:520px){.tutorial-hero{padding:48px 0}.search-form{display:grid;grid-template-columns:auto 1fr;padding:7px}.search-form button{grid-column:1/-1;width:100%}.course-banner{padding:38px 18px}.lesson-article,.topic-index{padding-left:16px;padding-right:16px}.lab-toolbar{align-items:flex-start;flex-direction:column}.mini-button{margin:0 7px 0 0}.lesson-pagination{flex-direction:column}}.leaderboard-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;overflow:hidden;max-width:800px}.leaderboard-card ol{list-style:none;padding:0;margin:0}.leaderboard-card li{display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:14px;padding:18px 20px;border-bottom:1px solid var(--border)}.leaderboard-card li:last-child{border-bottom:0}.leaderboard-card small{display:block;color:var(--muted)}.rank{display:grid;place-items:center;font-weight:900;color:#815f00}.settings-card{max-width:680px}.settings-form select{min-height:48px;background:var(--surface);color:var(--ink);padding:0 12px}.check-row,.settings-form select{border:1px solid var(--border);border-radius:12px}.check-row{display:flex;align-items:flex-start;gap:12px;padding:16px;margin:22px 0;cursor:pointer}.check-row input{width:20px;height:20px;margin-top:3px}.check-row small{display:block;color:var(--muted);margin-top:4px}.achievement-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin:28px 0}.achievement{display:flex;gap:16px;padding:22px;border:1px solid var(--border);border-radius:14px;background:var(--surface)}.achievement>span{font-size:2rem}.achievement h2{font-size:1.2rem;margin:0}.achievement p{color:var(--muted)}.achievement.locked{opacity:.65}.achievement.earned{border-color:#3a9c73;background:color-mix(in srgb,#3a9c73 8%,var(--surface))}