/*! tailwindcss v4.2.1 | 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}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, 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;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{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}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, 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;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{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{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,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{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-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{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.fixed{position:fixed}.relative{position:relative}.static{position:static}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.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}}.block{display:block}.contents{display:contents}.table{display:table}.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,)}.lowercase{text-transform:lowercase}}:root{--ink:#172019;--muted:#69736b;--paper:#f5f3ec;--card:#fffefa;--lime:#c9f45c;--green:#173f2a;--line:#dfe3d8}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);font-family:var(--font-vietnam),Arial,sans-serif;margin:0}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}svg{width:20px;height:20px}.site-shell{min-height:100vh}.topbar{z-index:10;color:#fff;border-bottom:1px solid #ffffff24;align-items:center;width:100%;height:74px;padding:0 max(4vw,24px);display:flex;position:absolute}.brand{color:inherit;letter-spacing:-.5px;align-items:center;gap:10px;font-size:19px;font-weight:800;text-decoration:none;display:flex}.brand>span:last-child>span{color:#b8e84c}.brand-mark{background:var(--lime);color:#183b25;width:34px;height:34px;font-family:var(--font-mono);border-radius:9px 3px;place-items:center;font-weight:800;display:grid;transform:rotate(-3deg)}.topbar nav{gap:34px;margin:auto;display:flex}.topbar nav a{color:#dbe5dd;font-size:13px;font-weight:600;text-decoration:none}.topbar nav a:hover{color:var(--lime)}.header-progress{color:#dce4de;width:160px;font-size:10px;font-weight:600}.header-progress>div{background:#ffffff25;border-radius:8px;height:4px;margin-top:7px;overflow:hidden}.header-progress i,.progress-track i{background:var(--lime);border-radius:8px;height:100%;display:block}.menu-button{color:#fff;background:0 0;border:0;padding:8px;display:none}.hero{background:var(--green);color:#fff;padding:148px max(6vw,28px) 0;position:relative;overflow:hidden}.hero:before{content:"";border:1px solid #ffffff12;border-radius:50%;width:430px;height:430px;position:absolute;top:12px;right:-80px;box-shadow:0 0 0 70px #ffffff08,0 0 0 140px #ffffff05}.hero-grid{z-index:1;grid-template-columns:1.08fr .92fr;align-items:center;gap:80px;max-width:1190px;margin:auto;display:grid;position:relative}.eyebrow{color:var(--lime);letter-spacing:1.6px;text-transform:uppercase;align-items:center;gap:10px;font-size:12px;font-weight:700;display:flex}.eyebrow span{background:var(--lime);width:24px;height:2px}.hero h1{letter-spacing:-4px;margin:20px 0 24px;font-size:clamp(46px,5.5vw,78px);font-weight:800;line-height:1.02}.hero h1 em{color:var(--lime);font-style:normal}.hero-copy>p{color:#bed0c4;max-width:590px;font-size:16px;line-height:1.8}.hero-actions{align-items:center;gap:26px;margin-top:34px;display:flex}.primary{background:var(--lime);color:#173f2a;cursor:pointer;border:0;border-radius:6px;align-items:center;gap:13px;padding:15px 21px;font-weight:700;display:flex;box-shadow:0 8px 26px #0003}.primary:hover{background:#d8ff78;transform:translateY(-1px)}.hero-actions>span{color:#8da497;font-size:11px;line-height:1.4}.hero-actions strong{color:#fff;font-size:15px;display:block}.visitor-badge{color:#9fb2a6;align-items:center;gap:10px;margin-top:22px;font-size:11px;display:inline-flex}.visitor-badge svg{width:18px;color:var(--lime)}.visitor-badge strong{color:#fff;font:700 13px var(--font-mono);margin-right:3px}.code-card{background:#101814;border:1px solid #ffffff20;border-radius:12px;overflow:hidden;transform:rotate(1deg);box-shadow:0 28px 60px #07100b70}.code-head{height:47px;font-family:var(--font-mono);color:#a3b1a9;border-bottom:1px solid #ffffff12;align-items:center;padding:0 17px;font-size:11px;display:flex}.code-head>span{gap:6px;margin-right:18px;display:flex}.code-head i{background:#ff6c67;border-radius:50%;width:8px;height:8px}.code-head i:nth-child(2){background:#f6c257}.code-head i:nth-child(3){background:#70ca74}.code-head b{font-weight:500}.code-head small{color:#769081;margin-left:auto}.code-card pre{line-height:1.75;font:13px/1.8 var(--font-mono);color:#d9e3dc;margin:0;padding:28px 26px;overflow:auto}.purple{color:#d896ff}.yellow{color:#d8e87f}.blue{color:#85d9d2}.green{color:#6c927a}.orange{color:#f5ae72}.code-result{color:#9bb0a2;font:10px var(--font-mono);background:#0c120f;border-top:1px solid #ffffff12;padding:13px 20px}.code-result span{color:#9bd955;margin-right:8px}.code-result small{float:right;color:#617066}.stats{z-index:1;border-top:1px solid #ffffff18;grid-template-columns:repeat(4,1fr);max-width:1190px;margin:86px auto 0;padding:24px 0 28px;display:grid;position:relative}.stats div{border-right:1px solid #ffffff15;justify-content:center;align-items:center;gap:12px;display:flex}.stats div:last-child{border:0}.stats strong{color:var(--lime);font-size:22px}.stats span{color:#a5baad;font-size:11px}.course{grid-template-columns:310px minmax(0,1fr);align-items:start;gap:72px;max-width:1260px;margin:0 auto;padding:72px 34px 100px;display:grid}.lesson-nav{background:var(--card);border:1px solid var(--line);border-radius:10px;position:sticky;top:28px;overflow:hidden;box-shadow:0 12px 32px #25331c0b}.aside-title{border-bottom:1px solid var(--line);padding:20px 20px 16px}.aside-title>div:first-child{justify-content:space-between;align-items:center;display:flex}.aside-title span{letter-spacing:1px;font-size:10px;font-weight:800}.aside-title b{color:#7a837c;font-size:10px}.progress-track{background:#e8eadf;border-radius:10px;height:5px;margin-top:12px;overflow:hidden}.search{color:#9aa09b;border:1px solid #e3e5dc;border-radius:6px;align-items:center;gap:8px;height:38px;margin:14px 14px 6px;padding:0 11px;display:flex}.search svg{width:16px}.search input{width:100%;color:var(--ink);background:0 0;border:0;outline:0;font-size:11px}.lesson-list{scrollbar-width:thin;max-height:calc(100vh - 185px);padding:6px 8px 12px;overflow:auto}.lesson-list button{text-align:left;cursor:pointer;color:#6d756f;background:0 0;border:0;border-radius:6px;grid-template-columns:32px 1fr auto;align-items:center;gap:10px;width:100%;padding:11px 9px;display:grid}.lesson-list button:hover{background:#f3f5ed}.lesson-list button.active{color:var(--green);background:#eaf4dd}.number{width:28px;height:28px;font:10px var(--font-mono);background:#fff;border:1px solid #dde1d7;border-radius:5px;place-items:center;display:grid}.number.done{background:var(--green);color:var(--lime);border-color:var(--green)}.number svg{width:14px}.lesson-list b{font-size:12px;line-height:1.4;display:block}.lesson-list small{color:#99a09b;margin-top:2px;font-size:9px;display:block}.lesson-time{color:#a3a9a4;font-size:9px;font-style:normal}.lesson-content{max-width:790px}.lesson-meta{color:#7e867f;text-transform:uppercase;letter-spacing:.7px;align-items:center;gap:16px;font-size:10px;font-weight:600;display:flex}.lesson-meta span:first-child{color:#3d6429;background:#e7f3d9;border-radius:3px;padding:6px 9px}.lesson-meta span{align-items:center;gap:5px;display:flex}.lesson-meta svg{width:14px}.lesson-content h2{letter-spacing:-2.7px;color:#172019;margin:18px 0;font-size:clamp(38px,5vw,58px);line-height:1}.lead{color:#68716b;max-width:720px;margin-bottom:36px;font-size:16px;line-height:1.8}.learn-box{border:1px solid var(--line);border-left:4px solid var(--lime);background:#fffefa;border-radius:8px;grid-template-columns:44px 1fr;gap:18px;margin:28px 0 46px;padding:24px;display:grid;box-shadow:0 8px 24px #2d3e2308}.section-icon{color:#38602d;background:#eaf5db;border-radius:7px;place-items:center;width:40px;height:40px;display:grid}.learn-box h3,.section-heading h3,.practice h3,.quiz h3{letter-spacing:-.4px;margin:0;font-size:17px}.learn-box ul{gap:10px;margin:14px 0 0;padding:0;list-style:none;display:grid}.learn-box li{color:#6f7771;align-items:center;gap:10px;font-size:12px;display:flex}.learn-box li span{color:#416b2c;background:#edf6df;border-radius:50%;place-items:center;width:18px;height:18px;display:grid}.learn-box li svg{width:12px}.theory-section{margin:0 0 52px}.content-kicker{letter-spacing:1.3px;color:#6f7c72;font-size:9px;font-weight:800}.content-title{letter-spacing:-.7px;margin:7px 0 20px;font-size:24px}.theory-grid{gap:12px;display:grid}.theory-card{border:1px solid var(--line);background:#fffefa;border-radius:8px;padding:24px 24px 22px 68px;position:relative}.theory-card>span{font:12px var(--font-mono);color:#8caf58;font-weight:700;position:absolute;top:24px;left:22px}.theory-card h4{letter-spacing:-.3px;margin:0 0 8px;font-size:15px}.theory-card p{color:#68726a;margin:0;font-size:12px;line-height:1.85}.section-heading{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}.section-heading>div{align-items:center;gap:13px;display:flex}.section-icon.dark{background:var(--green);color:var(--lime)}.section-heading small,.quiz-head small{letter-spacing:1.2px;color:#7b847d;font-size:9px;font-weight:800}.section-heading button{cursor:pointer;color:#69716b;background:0 0;border:1px solid #d5d9d0;border-radius:5px;padding:8px 11px;font-size:10px}.section-heading button:hover{background:#fff}.big-code{background:#101713;border-radius:9px 9px 0 0;overflow:hidden;box-shadow:0 18px 42px #1e2c2024}.file-tab{color:#d7e0da;height:42px;font:10px var(--font-mono);background:#16211b;border-bottom:1px solid #ffffff12;align-items:center;padding:0 18px;display:flex}.file-tab span{color:#6f8175;margin-left:auto}.big-code pre{color:#d7e3db;font:12px/1.75 var(--font-mono);max-height:430px;margin:0;padding:24px;overflow:auto}.walkthrough{border:1px solid var(--line);background:#fffefa;border-top:0;border-radius:0 0 9px 9px;padding:22px 24px}.walkthrough h4{margin:0 0 12px;font-size:13px}.walkthrough ol{gap:8px;margin:0;padding-left:20px;display:grid}.walkthrough li{color:#667067;padding-left:5px;font-size:11px;line-height:1.65}.pitfalls{background:#fff8e9;border:1px solid #e9ddbe;border-radius:9px;grid-template-columns:42px 1fr;gap:16px;margin:38px 0;padding:23px;display:grid}.pitfall-icon{color:#805c19;background:#f4dfae;border-radius:7px;place-items:center;width:38px;height:38px;display:grid}.pitfall-icon svg{width:18px}.pitfalls h3{margin:0 0 10px;font-size:15px}.pitfalls ul{gap:7px;margin:0;padding-left:17px;display:grid}.pitfalls li{color:#756a55;font-size:11px;line-height:1.55}.practice{background:#e9f1df;border:1px solid #dbe6ce;border-radius:9px;grid-template-columns:100px 1fr;gap:20px;margin:44px 0;padding:26px;display:grid}.practice-label{letter-spacing:1.2px;color:#58704e;padding-top:4px;font-size:9px;font-weight:800}.practice p{color:#59645c;margin:9px 0;font-size:13px;line-height:1.7}.practice ul{gap:7px;margin:12px 0 15px;padding-left:18px;display:grid}.practice li{color:#59645c;font-size:11px;line-height:1.55}.practice span{color:#758071;font-size:10px;line-height:1.6}.practice span strong{color:#4d6247}.quiz{background:var(--card);border:1px solid var(--line);border-radius:10px;margin-top:38px;padding:26px}.quiz-head{justify-content:space-between;align-items:flex-start;display:flex}.quiz-head>div{gap:13px;display:flex}.quiz-head>div>span{background:var(--lime);border-radius:50%;place-items:center;width:38px;height:38px;font-weight:800;display:grid}.quiz-head b{color:#7a827c;background:#f0f2e9;border-radius:20px;padding:6px 9px;font-size:9px}.quiz-head h3{margin-top:5px}.options{grid-template-columns:1fr 1fr;gap:10px;margin:22px 0 16px;display:grid}.options button{text-align:left;cursor:pointer;color:#505a52;background:#fff;border:1px solid #dfe2d9;border-radius:6px;align-items:center;gap:10px;padding:11px;font-size:11px;display:flex}.options button:hover,.options button.selected{background:#f3f8eb;border-color:#7c9d55}.options button>span{width:25px;height:25px;font:10px var(--font-mono);background:#f2f3ee;border-radius:4px;place-items:center;display:grid}.options button.correct{background:#edf8e5;border-color:#68a43e}.options button.wrong{background:#fff0ed;border-color:#c86c5e}.check-answer{background:var(--green);color:#fff;cursor:pointer;border:0;border-radius:5px;padding:11px 16px;font-size:11px;font-weight:700}.check-answer:disabled{opacity:.4;cursor:not-allowed}.feedback{color:#6c504a;background:#fff0ed;border-left:3px solid #c86c5e;padding:12px 14px;font-size:11px}.feedback.success{color:#47643b;background:#edf8e5;border-color:#68a43e}.lesson-footer{border-top:1px solid var(--line);justify-content:space-between;align-items:center;margin-top:34px;padding-top:24px;display:flex}.lesson-footer button{cursor:pointer}.complete{color:#657066;background:0 0;border:1px solid #cfd5c9;border-radius:6px;align-items:center;gap:8px;padding:11px 14px;font-size:10px;font-weight:700;display:flex}.complete svg{width:15px}.complete.completed{color:#3d692c;background:#e9f4dd;border-color:#bdd49f}.next{color:var(--green);background:0 0;border:0;align-items:center;gap:10px;margin-left:auto;font-size:11px;font-weight:700;display:flex}.next svg{width:17px}footer{color:#85928a;background:#111a15;align-items:center;gap:36px;min-height:130px;padding:35px max(6vw,28px);font-size:10px;display:flex}footer p{margin:auto}footer>.brand{color:#fff}@media (width<=900px){.topbar nav,.header-progress{display:none}.menu-button{margin-left:auto;display:block}.hero{padding-top:120px}.hero-grid{grid-template-columns:1fr;gap:48px}.hero h1{letter-spacing:-3px}.code-card{transform:none}.stats{grid-template-columns:1fr 1fr}.stats div{padding:10px}.course{grid-template-columns:1fr;padding:46px 22px 80px}.lesson-nav{z-index:20;max-height:78vh;display:none;position:fixed;top:70px;left:14px;right:14px}.lesson-nav.open{display:block}.lesson-list{max-height:62vh}.lesson-content{max-width:none}}@media (width<=560px){.topbar{height:64px;padding:0 18px}.hero{padding:108px 20px 0}.hero-grid{gap:38px}.hero h1{letter-spacing:-2.5px;font-size:46px}.hero-copy>p{font-size:14px}.hero-actions{align-items:flex-start}.hero-actions>span{display:none}.code-card pre{padding:20px 16px;font-size:10px}.stats{margin-top:55px}.stats div{flex-direction:column;gap:2px}.course{padding-left:16px;padding-right:16px}.lesson-content h2{font-size:42px}.lesson-meta{flex-wrap:wrap;gap:8px}.learn-box{grid-template-columns:1fr;padding:18px}.theory-card{padding:20px}.theory-card>span{margin-bottom:8px;display:block;position:static}.pitfalls,.practice,.options{grid-template-columns:1fr}.lesson-footer{align-items:flex-start;gap:20px}.next{text-align:right}.next svg{flex:none}footer{text-align:center;flex-direction:column;gap:14px}footer p{margin:0}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.primary:hover{transform:none}}@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}
