@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-cyrillic-ext-wght-normal-DjL33-gN.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-cyrillic-wght-normal-BEAKL7Jp.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-vietnamese-wght-normal-6IgcOCM7.woff2)format("woff2-variations");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:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-latin-ext-wght-normal-DC-KSUi6.woff2)format("woff2-variations");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:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-latin-wght-normal-BgDaEnEv.woff2)format("woff2-variations");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:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-cyrillic-ext-wght-normal-X_5orZeX.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-cyrillic-wght-normal-DiZS0aHC.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-symbols2-wght-normal-CO5SzqOn.woff2)format("woff2-variations");unicode-range:U+2000-2001,U+2004-2008,U+200A,U+23B8-23BD,U+2500-259F}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-vietnamese-wght-normal-DadHysG0.woff2)format("woff2-variations");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:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-latin-ext-wght-normal-Bwz-egvJ.woff2)format("woff2-variations");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:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-latin-wght-normal-XN7g48iV.woff2)format("woff2-variations");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}@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-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-ease:initial}}}@layer theme{:root,:host{--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;--ease-in-out:cubic-bezier(.4, 0, .2, 1);--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--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,-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;-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:where(:not(iframe)){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{.invisible{visibility:hidden}.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}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.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}.grid{display:grid}.hidden{display:none}.inline{display:inline}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.resize{resize:both}.border{border-style:var(--tw-border-style);border-width:1px}.italic{font-style:italic}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.blur{--tw-blur:blur(8px);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,)}.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))}.ease-in-out{--tw-ease:var(--ease-in-out);transition-timing-function:var(--ease-in-out)}}:root{-webkit-tap-highlight-color:transparent;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;color:var(--ink,#f3f2e9);background:var(--night,#071411);--night:#071411;--night-soft:#091914;--surface:#0d201a;--raised:#132a22;--raised-bright:#1a382c;--ink:#f3f2e9;--muted:#a4b0a4;--subtle:#8b9c8e;--border:#263c30;--border-bright:#3a5944;--primary:#a5ed08;--on-primary:#10170b;--accent:#ff8e63;--purple:#b9a1ff;--warm:#f2cb75;--error:#ff9e8a;--mono:"Geist Mono Variable", ui-monospace, monospace;--serif:Georgia, "Times New Roman", serif;--radius:3px;--header-height:64px;font-family:Geist Variable,ui-sans-serif,system-ui,sans-serif;font-size:14px;line-height:1.65}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth;scrollbar-color:var(--primary) var(--night-soft);scrollbar-width:thin}*{scrollbar-color:var(--primary) var(--night-soft)}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--night-soft)}::-webkit-scrollbar-thumb{border:2px solid var(--night-soft);background:var(--primary)}::-webkit-scrollbar-thumb:hover{background:#c3ff35}::-webkit-scrollbar-corner{background:var(--night)}body{background:var(--night);min-width:320px;min-height:100vh;margin:0}body:before{content:"";z-index:-1;pointer-events:none;opacity:.16;background-image:linear-gradient(90deg,#0000 calc(100% - 1px),#41604b 100%),linear-gradient(0deg,#0000 calc(100% - 1px),#41604b 100%);background-size:80px 80px;position:fixed;inset:0;-webkit-mask-image:linear-gradient(#000 0,#0000 70%);mask-image:linear-gradient(#000 0,#0000 70%)}button,input,select,textarea{font:inherit}button,summary{cursor:pointer}button{color:inherit}button:disabled{cursor:not-allowed;opacity:.45}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}svg{flex-shrink:0}h1,h2,h3,h4,p{margin:0}h1,h2,h3{font-weight:500}h1,h2,h3,p{overflow-wrap:break-word}ul,ol{padding-left:22px}button,a{transition:color .18s,background-color .18s,border-color .18s,opacity .18s}::selection{background:var(--primary);color:var(--on-primary)}:focus-visible{outline:2px solid var(--primary);outline-offset:4px}#main-content:focus{outline:none}#main-content{min-height:65vh}code,kbd,pre{font-family:var(--mono)}pre{white-space:pre;tab-size:2;overflow:auto}input[type=range],input[type=checkbox]{accent-color:var(--primary)}input[type=search],input[type=text]{min-width:0}summary{list-style:none}summary::-webkit-details-marker{display:none}details>summary svg{transition:transform .18s}details[open]>summary>svg:last-child{transform:rotate(180deg)}[id]{scroll-margin-top:112px}[hidden]{display:none!important}em{color:var(--primary);font-family:var(--serif);font-weight:400}.page-width{width:min(1360px,100% - 96px);margin-inline:auto}.eyebrow{color:var(--muted);font:10px/1.6 var(--mono);letter-spacing:.14em;text-transform:uppercase;align-items:center;gap:9px;display:flex}.number-label{color:var(--subtle);font:10px/1.6 var(--mono);letter-spacing:.08em}.muted{color:var(--muted)}.quiet-note{color:var(--subtle);align-items:flex-start;gap:8px;font-size:11px;line-height:1.8;display:flex}.quiet-note svg{margin-top:3px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:100;background:var(--primary);color:var(--on-primary);padding:12px 20px;position:fixed;top:-90px;left:16px}.skip-link:focus{top:12px}.button{border-radius:var(--radius);text-align:center;border:1px solid #0000;justify-content:center;align-items:center;gap:10px;min-height:45px;padding:11px 17px;font-size:12px;font-weight:600;line-height:1.45;display:inline-flex}.button.primary{background:var(--primary);color:var(--on-primary)}.button.primary:hover:not(:disabled){background:#c3ff35}.button.secondary{border-color:var(--border-bright);background:var(--surface);color:var(--ink)}.button.secondary:hover:not(:disabled){border-color:var(--primary);background:var(--raised)}.button.ghost{color:var(--muted);background:0 0}.button.ghost:hover:not(:disabled){color:var(--primary)}.button.danger{color:#ffb6a8;background:#3a201d;border-color:#76443d}.button.small{min-height:36px;padding:8px 11px;font-size:11px}.button-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.icon-button{border-radius:var(--radius);min-width:37px;min-height:37px;color:var(--muted);background:0 0;border:1px solid #0000;justify-content:center;align-items:center;padding:7px;display:inline-flex}.icon-button:hover:not(:disabled){border-color:var(--border);background:var(--raised);color:var(--primary)}.text-link{color:var(--primary);align-items:center;gap:9px;font-size:12px;font-weight:500;display:inline-flex}.text-link:hover{color:#d0ff69;text-underline-offset:5px;text-decoration:underline}.text-button{background:0 0;border:0;padding:0;font-size:12px}.text-button:hover{color:var(--ink)}progress{background:var(--border);width:100%;height:3px;accent-color:var(--primary);border:0;border-radius:0;display:block;overflow:hidden}progress::-webkit-progress-bar{background:var(--border)}progress::-webkit-progress-value{background:var(--primary)}progress::-moz-progress-bar{background:var(--primary)}.status-dot{background:var(--primary);border-radius:50%;width:6px;height:6px;display:inline-block;box-shadow:0 0 11px #a5ed0877}.completion-badge{color:var(--primary);font:10px var(--mono);align-items:center;gap:6px;display:inline-flex}.site-header{z-index:30;border-bottom:1px solid var(--border);background:#071411ed;position:sticky;top:0}.header-inner{width:min(1480px,100% - 72px);height:var(--header-height);align-items:center;gap:34px;margin:auto;display:flex}.brand-cluster{align-self:center;align-items:center;gap:13px;min-width:220px;display:flex}.brand{letter-spacing:-1.3px;align-items:center;gap:9px;font-size:23px;font-weight:650;line-height:1;display:inline-flex}.brand-dot{color:var(--primary)}.brand-symbol{align-items:center;gap:3px;width:28px;height:28px;display:flex;position:relative;transform:skew(-17deg)}.brand-symbol i{background:var(--primary);width:5px;height:12px;display:block}.brand-symbol i:nth-child(2){height:22px}.brand-symbol i:nth-child(3){height:17px}.brand-symbol b{border:1px solid var(--accent);border-radius:50%;width:5px;height:5px;position:absolute;top:3px;right:0}.brand-caption{color:var(--subtle);font:7px/1.25 var(--mono);letter-spacing:.09em;gap:2px;display:grid}.brand-caption i{color:var(--primary);font-style:normal}.brand-small{font-size:19px}.brand-small .brand-symbol{margin-right:-3px;transform:skew(-17deg)scale(.82)}.desktop-nav{align-self:stretch;align-items:center;gap:clamp(16px,2.1vw,31px);height:100%;margin-left:auto;display:flex}.desktop-nav>a{height:100%;color:var(--muted);white-space:nowrap;align-self:center;align-items:center;padding-block:0;font-size:11px;display:flex;position:relative}.desktop-nav>a:before{color:var(--subtle);font:8px var(--mono);margin-right:5px}.desktop-nav>a:first-child:before{content:"00"}.desktop-nav>a:nth-child(2):before{content:"01"}.desktop-nav>a:nth-child(3):before{content:"02"}.desktop-nav>a:nth-child(4):before{content:"03"}.desktop-nav>a:nth-child(5):before{content:"04"}.desktop-nav>a.active{color:var(--primary)}.desktop-nav>a>span{position:relative}.desktop-nav>a.active>span:after{background:var(--primary);content:"";height:2px;position:absolute;bottom:-7px;left:0;right:0}.desktop-nav>a:hover{color:var(--ink)}.header-actions{align-self:center;align-items:center;gap:8px;display:flex}.search-trigger{border:1px solid var(--border);border-radius:var(--radius);background:var(--night-soft);width:clamp(145px,12vw,205px);min-height:35px;color:var(--muted);align-items:center;gap:10px;padding:6px 9px;display:flex}.search-placeholder{color:var(--subtle);text-align:left;text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:10px;overflow:hidden}.search-trigger:hover{border-color:var(--primary);color:var(--ink)}.search-trigger kbd{color:var(--subtle);font-size:9px}.locale-button{min-height:36px;color:var(--muted);font:10px var(--mono);background:0 0;border:0;align-items:center;gap:6px;padding:6px;display:flex}.locale-button:hover{color:var(--primary)}.mobile-nav{display:none}.motion-ticker{border-bottom:1px solid var(--border);color:#97a998;background:#0b1a14;align-items:center;height:34px;display:flex;overflow:hidden}.ticker-track{align-items:center;width:max-content;height:100%;animation:36s linear infinite ticker-drift;display:flex}.ticker-group{flex:none;justify-content:space-around;align-items:center;gap:clamp(22px,3vw,48px);min-width:100vw;height:100%;padding-inline:clamp(18px,2vw,36px);display:flex}.ticker-item{font:8px/1 var(--mono);letter-spacing:.18em;white-space:nowrap;align-items:center;gap:clamp(18px,2vw,32px);display:inline-flex}.ticker-item b{color:var(--primary);font-size:12px;font-weight:500}@keyframes ticker-drift{to{transform:translate(-50%)}}.storage-notice{color:var(--warm);text-align:center;background:#302719;padding:9px 22px;font-size:11px}.site-footer{border-top:1px solid var(--border);padding-top:42px;padding-bottom:24px;position:relative}.site-footer:before{background:var(--primary);width:clamp(64px,10vw,150px);height:1px;box-shadow:0 0 18px var(--primary);position:absolute;top:-1px;left:0}@supports (color:color-mix(in lab, red, red)){.site-footer:before{box-shadow:0 0 18px color-mix(in srgb, var(--primary) 50%, transparent)}}.site-footer:before{content:""}.footer-main{grid-template-columns:minmax(170px,.85fr) minmax(340px,1.5fr) minmax(126px,.55fr) minmax(126px,.55fr);align-items:stretch;gap:clamp(18px,2.5vw,36px);display:grid}.footer-identity{padding-top:12px}.footer-identity>p{max-width:28ch;color:var(--muted);margin:14px 0 18px;font-size:11px;line-height:1.8}.footer-identity__signature{color:var(--subtle);font:8px/1.5 var(--mono);letter-spacing:.1em;align-items:center;gap:8px;display:inline-flex}.footer-identity__signature>span{background:var(--primary);width:6px;height:6px;box-shadow:0 0 12px var(--primary);border-radius:50%}@supports (color:color-mix(in lab, red, red)){.footer-identity__signature>span{box-shadow:0 0 12px color-mix(in srgb, var(--primary) 55%, transparent)}}.footer-next{isolation:isolate;border:1px solid var(--border-bright);background:radial-gradient(ellipse at 100% 0%, var(--primary), transparent 52%), var(--night-soft);align-content:start;gap:12px;min-width:0;padding:20px;display:grid;position:relative;overflow:hidden}@supports (color:color-mix(in lab, red, red)){.footer-next{background:radial-gradient(ellipse at 100% 0%, color-mix(in srgb, var(--primary) 9%, transparent), transparent 52%), var(--night-soft)}}.footer-next:before{z-index:-1;background-image:radial-gradient(var(--border-bright) .7px, transparent .7px);content:"";opacity:.17;background-position:100% 0;background-size:20px 20px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(115deg,#0000 15%,#000 100%);mask-image:linear-gradient(115deg,#0000 15%,#000 100%)}.footer-next__topline{justify-content:space-between;align-items:center;gap:14px;display:flex}.footer-next__topline>.eyebrow{color:var(--subtle);margin:0;font-size:8px}.footer-next__count{color:var(--primary);font:9px var(--mono);white-space:nowrap}.footer-progress{background:var(--border);height:3px;overflow:hidden}.footer-progress>span{background:var(--primary);height:100%;box-shadow:0 0 12px var(--primary);display:block}@supports (color:color-mix(in lab, red, red)){.footer-progress>span{box-shadow:0 0 12px color-mix(in srgb, var(--primary) 60%, transparent)}}.footer-progress>span{transition:width .5s cubic-bezier(.2,.7,.2,1)}.footer-next__context{color:var(--subtle);font:8px/1.6 var(--mono);letter-spacing:.05em;text-transform:uppercase;margin:0}.footer-next__title{max-width:25ch;color:var(--ink);letter-spacing:-.045em;text-wrap:balance;margin:-4px 0 0;font-size:clamp(17px,1.5vw,21px);font-weight:550;line-height:1.25;position:relative}.footer-next__description{max-width:46ch;color:var(--muted);margin:-5px 0 0;font-size:10px;line-height:1.7}.footer-next__action{background:var(--primary);min-height:39px;color:var(--on-primary);justify-self:start;align-items:center;gap:15px;margin-top:3px;padding:0 13px;font-size:10px;font-weight:600;transition:gap .18s,box-shadow .18s,transform .18s;display:inline-flex}.footer-next__action:hover{box-shadow:0 0 24px var(--primary);gap:20px}@supports (color:color-mix(in lab, red, red)){.footer-next__action:hover{box-shadow:0 0 24px color-mix(in srgb, var(--primary) 18%, transparent)}}.footer-next__action:hover{transform:translateY(-1px)}.footer-next__action:focus-visible,.footer-nav a:focus-visible,.footer-resources a:focus-visible{outline:2px solid var(--primary);outline-offset:4px}.footer-next__index{z-index:-1;color:var(--primary);font:72px/.9 var(--mono);letter-spacing:-.12em;opacity:.055;pointer-events:none;position:absolute;bottom:12px;right:15px}.footer-nav,.footer-resources{align-content:start;justify-items:start;gap:11px;padding-top:12px;display:grid}.footer-group-title{color:var(--subtle);font:8px/1.5 var(--mono);letter-spacing:.14em;margin:0 0 3px}.footer-nav>a,.footer-resources>a{color:var(--muted);font-size:10px;line-height:1.5;transition:color .15s,transform .15s}.footer-nav>a:hover,.footer-resources>a:hover{color:var(--primary);transform:translate(2px)}.footer-resources>a>span{color:var(--primary);font-size:9px}.footer-note{color:var(--subtle);text-align:center;border-top:1px solid #1a3025;justify-content:center;align-items:center;margin-top:28px;padding-top:14px;font-size:9px;display:flex}.dialog{border:1px solid var(--border-bright);background:var(--surface);width:min(560px,100% - 32px);max-height:85dvh;color:var(--ink);border-radius:4px;margin:auto;padding:24px;box-shadow:0 24px 80px #0008}.dialog::backdrop{background:#020906d9}.dialog-heading{justify-content:space-between;align-items:center;gap:15px;margin-bottom:20px;display:flex}.dialog-heading h2{letter-spacing:-.6px;font-size:20px}.search-field,.inline-search{border:1px solid var(--border-bright);background:var(--night-soft);color:var(--muted);align-items:center;gap:11px;padding:11px 12px;display:flex}.search-field:focus-within,.inline-search:focus-within{border-color:var(--primary)}.search-field input,.inline-search input{width:100%;color:var(--ink);background:0 0;border:0;outline:0;font-size:12px}.search-label{margin:20px 0 8px;font-size:8px}.search-results{max-height:390px;margin-bottom:17px;overflow:auto}.search-results>a{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:12px 10px;display:flex}.search-results>a:hover{background:var(--raised);color:var(--ink)}.search-results>a>span{gap:3px;display:grid}.search-results strong{font-size:12px;font-weight:500}.search-results small{color:var(--muted);font:9px var(--mono)}.setting-row{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:24px;padding-block:18px;display:flex}.setting-row strong,.settings-progress strong{font-size:12px;font-weight:550}.setting-row p,.settings-progress p{color:var(--muted);margin-top:7px;font-size:11px}.switch{border:1px solid var(--border-bright);background:var(--raised);border-radius:14px;flex-shrink:0;width:38px;height:22px;padding:3px}.switch>span{background:var(--muted);border-radius:50%;width:14px;height:14px;transition:transform .16s;display:block}.switch.on{border-color:var(--primary);background:#456b1e}.switch.on>span{background:var(--primary);transform:translate(15px)}.select-trigger{border:1px solid var(--border-bright);border-radius:var(--radius);background:var(--night-soft);min-width:0;min-height:40px;color:var(--ink);text-align:left;justify-content:space-between;align-items:center;gap:10px;padding:8px 11px;font-size:10px;display:inline-flex}.select-trigger>.select-value{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.select-chevron{color:var(--subtle);flex-shrink:0;transition:transform .2s cubic-bezier(.2,.7,.2,1),color .16s;display:inline-flex}.select-trigger:hover .select-chevron{color:var(--ink)}.select-trigger[data-state=open] .select-chevron{color:var(--primary);transform:rotate(180deg)}.select-trigger:hover,.select-trigger[data-state=open]{border-color:var(--primary)}.select-trigger:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.select-trigger:disabled{border-color:var(--border)}.setting-row .select-trigger{min-width:110px}.select-trigger--sm{min-width:14ch;min-height:28px;font:9px var(--mono);gap:6px;padding:4px 8px}.select-content{z-index:1000;min-width:var(--radix-select-trigger-width);max-width:min(var(--radix-select-content-available-width), 440px);max-height:min(var(--radix-select-content-available-height), 360px);overscroll-behavior:contain;border:1px solid var(--border-bright);border-radius:var(--radius);background:var(--surface);color:var(--ink);overflow-y:auto;box-shadow:0 14px 36px #0009}.select-group-label{border-top:1px solid var(--border);color:var(--subtle);font:8px/1.4 var(--mono);letter-spacing:.1em;text-transform:uppercase;padding:12px 11px 6px}.select-group:first-child .select-group-label,.select-group-label:first-child{border-top:0}.select-item{min-height:40px;color:var(--muted);-webkit-user-select:none;user-select:none;outline:none;align-items:center;padding:9px 34px 9px 11px;font-size:11px;line-height:1.45;display:flex;position:relative}.select-item[data-highlighted]{background:var(--raised);color:var(--ink)}.select-item[data-state=checked]{color:var(--primary)}.select-indicator{color:var(--primary);align-items:center;display:inline-flex;position:absolute;right:11px}.select-content--sm .select-item{min-height:28px;font:9px/1.4 var(--mono);padding:5px 26px 5px 8px}.select-content--sm .select-indicator{right:8px}.select-content--sm .select-group-label{padding:8px 8px 4px}.settings-progress{color:var(--primary);align-items:flex-start;gap:13px;padding:22px 0;display:flex}.settings-progress p{color:var(--muted)}.reset-section{padding-block:10px 23px}.reset-section>p{color:var(--muted);margin-bottom:15px;font-size:12px}.reset-success{color:var(--primary);margin-top:12px;font-size:11px}.hero{grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);align-items:center;gap:clamp(28px,5vw,78px);min-height:690px;padding-top:26px;padding-bottom:84px;display:grid;position:relative}.hero:before{z-index:-1;clip-path:polygon(11% 0,100% 0,100% 88%,84% 100%,0 100%,0 16%);content:"";border:1px solid #1b3427;width:49%;height:73%;position:absolute;top:9%;right:0}.hero-copy,.hero-lab{min-width:0}.hero-copy{container-type:inline-size}.tiny-line{background:var(--primary);width:21px;height:1px}.hero-copy h1{--hero-ratio:5.84;font-size:clamp(24px, calc(100cqw / var(--hero-ratio)), 110px);letter-spacing:-.075em;word-spacing:.12em;margin:30px 0 24px;font-weight:540;line-height:.9;position:relative}.hero-copy h1 em{letter-spacing:-.075em;font-size:1.06em}html[lang=en] .hero-copy h1{--hero-ratio:6.8}.hero-line{white-space:nowrap}.hero-period{color:var(--accent);vertical-align:top;margin-left:.12em;font-size:.3em;line-height:1;display:inline-block}.hero-lead{max-width:none;color:var(--muted);font-size:13px;line-height:1.9}.hero-actions{flex-wrap:wrap;align-items:center;gap:13px;margin-top:27px;display:flex}.hero-footnote{color:var(--subtle);align-items:center;gap:8px;margin-top:17px;font-size:9px;display:flex}.hero-footnote svg{color:var(--primary)}.hero-index-strip{border-top:1px solid var(--border);max-width:none;color:var(--subtle);font:8px var(--mono);letter-spacing:.06em;justify-content:space-between;gap:13px;margin-top:33px;padding-top:11px;display:flex}.hero-index-strip>span:first-child{align-items:center;gap:8px;display:flex}.hero-lab{padding-top:7px}.hero-lab-label{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.handwritten{color:var(--accent);font:italic 17px var(--serif);transform:rotate(-4deg)}.hero-lab-note{color:var(--subtle);justify-content:center;align-items:center;gap:8px;margin-top:12px;font-size:9px;display:flex}.hero-scroll{color:var(--subtle);font:8px var(--mono);letter-spacing:.12em;align-items:center;gap:11px;display:flex;position:absolute;bottom:27px;right:0}.hero-scroll svg{color:var(--primary)}.home-demo{border:1px solid var(--border-bright);background:var(--surface);border-radius:3px;position:relative;overflow:hidden}.home-demo:before{z-index:1;background:var(--primary);content:"";width:50px;height:2px;position:absolute;top:-1px;left:20px}.demo-topline{border-bottom:1px solid var(--border);min-height:39px;color:var(--subtle);font:8px var(--mono);letter-spacing:.07em;justify-content:space-between;align-items:center;gap:10px;padding:9px 14px;display:flex}.demo-topline>span:first-child{color:var(--ink);align-items:center;gap:8px;display:flex}.home-demo-stage{background-color:#091713;background-image:radial-gradient(#42604b 1px,#0000 1px);background-size:22px 22px;align-items:center;height:clamp(170px,18vw,225px);padding-left:36px;display:flex;position:relative;overflow:hidden}.home-demo-stage:before{content:"";border-top:1px dashed #4a6b4b;position:absolute;top:50%;left:18px;right:18px}.motion-route{border-block:1px solid #354b39;height:66px;position:relative}.motion-box,.motion-ghost{border-radius:2px;width:64px;height:64px;position:absolute;top:0}.motion-box{z-index:2;border:1px solid var(--border-bright);background:var(--night);color:var(--primary);place-items:center;display:grid;box-shadow:0 0 45px #a5ed082e}.motion-box .brand-symbol{transform:skew(-17deg)scale(1.25)}.motion-ghost{border:1px dashed #a5ed0880}.motion-origin,.motion-destination{color:var(--subtle);font:8px var(--mono);position:absolute;top:73px}.motion-origin{left:26px}.coordinate{color:var(--muted);font:8px var(--mono);position:absolute}.coordinate-top{top:13px;left:14px}.coordinate-bottom{bottom:33px;right:15px}.demo-caption{color:var(--subtle);text-align:center;font-size:8px;position:absolute;bottom:9px;left:0;right:0}.home-demo-code{border-block:1px solid var(--border);background:#08140f;padding:14px 19px 13px;position:relative}.code-file{color:var(--subtle);font:8px var(--mono);letter-spacing:.08em}.home-demo-code pre{margin:8px 0;font-size:11px;line-height:1.7}.code-comment{color:var(--subtle);font:italic 8px var(--mono)}.syntax-green{color:var(--primary)}.syntax-purple{color:var(--purple)}.syntax-string{color:#b7d99a}.syntax-number{color:var(--warm)}.demo-settings{border-bottom:1px solid var(--border);align-items:center;gap:22px;padding:9px 14px;display:flex}.demo-settings label{color:var(--muted);font:8px var(--mono);align-items:center;gap:8px;display:flex}.demo-settings .select-trigger{background:var(--raised);font:8px var(--mono);padding:4px 6px}.demo-controls{align-items:center;gap:7px;padding:10px 12px;display:flex}.demo-controls .button{font-size:9px}.demo-progress{background:var(--border);flex:1;height:2px;margin-left:5px}.demo-progress>span{background:var(--primary);height:100%;display:block}.demo-controls output{color:var(--subtle);font:8px var(--mono)}.home-facts{border-block:1px solid var(--border);grid-template-columns:1.25fr repeat(3,1fr);align-items:center;display:grid}.home-facts>span,.home-facts>div{align-items:center;min-height:77px;display:flex}.home-facts>span{color:var(--muted);font:8px var(--mono);letter-spacing:.12em;justify-content:space-between;padding-right:20px}.home-facts>span svg{color:var(--primary)}.home-facts>div{border-left:1px solid var(--border);gap:13px;padding:12px 20px}.home-facts strong{color:var(--ink);font:25px/1 var(--mono);letter-spacing:-.08em}.home-facts strong i{color:var(--primary);font-size:13px;font-style:normal}.home-facts>div>span{max-width:130px;color:var(--muted);font-size:9px;line-height:1.55}.home-path,.learning-method{padding-top:105px;padding-bottom:96px}.section-intro{grid-template-columns:1fr minmax(250px,.55fr);align-items:end;gap:40px;margin-bottom:40px;display:grid}.section-intro h2{letter-spacing:-.065em;margin-top:18px;font-size:clamp(37px,5vw,62px);line-height:1.06}.section-intro h2 em{font-size:1.06em}.section-intro>div:last-child>p,.section-intro>p{color:var(--muted);margin-bottom:13px;font-size:12px;line-height:1.9}.section-intro .text-link{margin-top:8px}.home-module-list{border-top:1px solid var(--border-bright)}.home-module{border-bottom:1px solid var(--border);grid-template-columns:58px minmax(0,1fr) 100px 23px;align-items:center;gap:16px;min-height:85px;padding-left:10px;display:grid}.home-module:hover{background:linear-gradient(90deg,#a5ed080c,#0000 78%)}.module-number{color:var(--primary);font:12px var(--mono)}.home-module h3{letter-spacing:-.03em;font-size:16px}.home-module p{color:var(--subtle);font:9px var(--mono);margin-top:3px}.module-count{color:var(--muted);font:8px var(--mono);text-align:right}.home-module>svg{color:var(--subtle)}.home-module:hover>svg{color:var(--primary)}.project-teaser{border:1px solid var(--border-bright);background:#0b1b15;grid-template-columns:1fr 1.2fr auto;align-items:center;gap:24px;margin-top:21px;padding:18px 20px;display:grid}.project-teaser .number-label{font-size:8px}.project-teaser strong{font-size:16px;font-weight:500}.project-teaser>span:last-child{color:var(--primary);align-items:center;gap:9px;font-size:10px;display:flex}.learning-method{border-top:1px solid var(--border)}.method-columns{border-top:1px solid var(--border-bright);grid-template-columns:repeat(3,1fr);display:grid}.method-columns>div{min-height:206px;padding:21px 24px 20px 0;position:relative}.method-columns>div+div{border-left:1px solid var(--border);padding-left:25px}.method-top{color:var(--primary);justify-content:space-between;align-items:center;display:flex}.method-top>span{color:var(--subtle);font:9px var(--mono)}.method-columns h3{letter-spacing:-.04em;margin-top:42px;font-size:24px}.method-columns p{max-width:290px;color:var(--muted);margin-top:9px;font-size:11px;line-height:1.8}.prerequisites{background:var(--primary);color:var(--on-primary);border-radius:8px;justify-content:space-between;align-items:center;gap:32px;margin-bottom:100px;padding:36px 40px;display:flex}.prerequisites .eyebrow{color:#293b10}.prerequisites h2{letter-spacing:-.055em;max-width:590px;margin-top:11px;font-size:clamp(25px,3vw,37px);line-height:1.12}.prerequisites p{color:#293b10;max-width:580px;margin-top:12px;font-size:11px;line-height:1.8}.prerequisite-tags{gap:7px;margin-top:17px;display:flex}.prerequisite-tags span{font:8px var(--mono);border:1px solid #46641c;padding:4px 8px}.prerequisites .button.primary{background:var(--night);color:var(--primary);flex-shrink:0}.prerequisites .button.primary:hover{background:#16251a}.learning-page{padding-top:65px;padding-bottom:95px}.page-header{margin-bottom:34px}.page-header h1{letter-spacing:-.07em;margin-top:19px;font-size:clamp(47px,6.5vw,78px);line-height:.99}.page-header h1 em{font-size:1.02em}.page-header h1{word-spacing:.12em}.learning-page .page-header h1{letter-spacing:-.04em;width:fit-content;max-width:100%}.page-lead{max-width:640px;color:var(--muted);margin-top:18px;font-size:13px;line-height:1.85}.split-heading{grid-template-columns:minmax(0,1fr) 255px;align-items:end;gap:50px;display:grid}.split-heading .page-lead{max-width:620px}.path-progress{border-left:1px solid var(--primary);gap:10px;padding:16px 0 5px 18px;display:grid}.path-progress>strong{font:30px var(--mono)}.path-progress>strong>span{color:var(--subtle);font-size:16px}.path-progress>p{color:var(--muted);font-size:10px}.path-progress .text-link{font-size:10px}.path-meta{border-block:1px solid var(--border);color:var(--muted);flex-wrap:wrap;align-items:center;gap:11px 24px;padding:14px 0;font-size:10px;display:flex}.path-meta>span{align-items:center;gap:7px;display:flex}.path-meta svg{color:var(--primary)}.prereq-disclosure{margin-top:17px}.prereq-disclosure summary{min-height:56px;color:var(--muted);justify-content:space-between;align-items:center;gap:12px;padding:12px;font-size:11px;display:flex}.prereq-disclosure summary:hover{color:var(--ink)}.prereq-disclosure>p{max-width:820px;color:var(--muted);padding:0 0 16px;font-size:11px;line-height:1.9}.curriculum-toolbar{justify-content:space-between;align-items:center;gap:20px;margin:27px 0 15px;display:flex}.filter-tabs{align-items:center;gap:5px;display:flex}.filter-tabs>button{min-height:35px;color:var(--muted);background:0 0;border:1px solid #0000;padding:7px 11px;font-size:10px}.filter-tabs>button.active{border-color:var(--border-bright);color:var(--primary)}.filter-tabs>button:hover{color:var(--ink)}.inline-search{width:min(275px,100%);min-height:37px;padding:8px 10px}.inline-search input{font-size:10px}.curriculum{border-top:1px solid var(--border-bright)}.curriculum-module{border-bottom:1px solid var(--border)}.curriculum-module>summary{grid-template-columns:48px minmax(0,1fr) 150px 18px;align-items:center;gap:16px;min-height:83px;padding-inline:12px;display:grid}.curriculum-module>summary>.module-number{justify-self:center;font-size:14px}.module-title h2{letter-spacing:-.02em;font-size:15px}.module-title p{color:var(--subtle);margin-top:4px;font-size:10px}.module-meta{color:var(--muted);font:8px var(--mono);gap:7px;display:grid}.curriculum-module>summary>svg{color:var(--subtle)}.curriculum-module[open]>summary>svg{color:var(--primary)}.lesson-list{border-top:1px solid var(--border);margin:0 0 17px;padding:0;list-style:none}.lesson-list li+li{border-top:1px solid #1b3025}.lesson-list a{grid-template-columns:48px minmax(0,1fr) 63px 17px;align-items:center;gap:16px;min-height:54px;padding:8px 12px;display:grid}.lesson-list .lesson-status{justify-self:center}.lesson-list a:hover{color:var(--ink)}.lesson-list a>div{gap:2px;display:grid}.lesson-list strong{font-size:11px;font-weight:500}.lesson-list small{color:var(--subtle);font:8px var(--mono)}.lesson-list a>svg{color:var(--subtle)}.lesson-status{border:1px solid var(--border-bright);width:15px;height:15px;color:var(--on-primary);border-radius:50%;place-items:center;display:grid}.lesson-status.done{border-color:var(--primary);background:var(--primary)}.lesson-status>span{background:var(--subtle);border-radius:50%;width:3px;height:3px}.lesson-time{color:var(--subtle);font:8px var(--mono);text-align:right}.quiet-banner{border-block:1px solid var(--border);color:var(--muted);justify-content:space-between;align-items:center;gap:20px;margin-top:28px;padding:17px 0;font-size:11px;display:flex}.feedback-state{--feedback-accent:var(--primary);isolation:isolate;border:1px solid var(--feedback-accent);justify-content:center;width:min(100%,760px);min-height:clamp(340px,58vh,560px);margin:clamp(24px,4vw,52px) auto;padding:clamp(28px,5vw,60px);display:flex;position:relative;overflow:hidden}@supports (color:color-mix(in lab, red, red)){.feedback-state{border:1px solid color-mix(in srgb, var(--feedback-accent) 27%, var(--border))}}.feedback-state{background:radial-gradient(ellipse at 50% 0%, var(--feedback-accent), transparent 62%), var(--surface)}@supports (color:color-mix(in lab, red, red)){.feedback-state{background:radial-gradient(ellipse at 50% 0%, color-mix(in srgb, var(--feedback-accent) 11%, transparent), transparent 62%), var(--surface)}}.feedback-state{color:var(--muted);text-align:center;box-shadow:0 24px 70px #0003}.feedback-state__content{flex-direction:column;justify-content:center;align-items:center;gap:13px;width:100%;display:flex}.feedback-state:before{z-index:-1;background-image:radial-gradient(var(--border-bright) .8px, transparent .8px);content:"";opacity:.2;pointer-events:none;background-position:50%;background-size:24px 24px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(#000 5%,#0000 76%);mask-image:radial-gradient(#000 5%,#0000 76%)}.feedback-state--error{--feedback-accent:var(--error)}.feedback-state--not-found{--feedback-accent:var(--accent)}.feedback-state__visual{flex:none;place-items:center;width:110px;height:110px;margin-bottom:4px;display:grid;position:relative}.feedback-state__orbit{border:1px dashed var(--feedback-accent);position:absolute;inset:5px}@supports (color:color-mix(in lab, red, red)){.feedback-state__orbit{border:1px dashed color-mix(in srgb, var(--feedback-accent) 47%, transparent)}}.feedback-state__orbit{border-radius:50%;transition:border-color .18s;animation:24s linear infinite feedback-orbit}.feedback-state__orbit:before,.feedback-state__orbit:after{border:1px solid var(--surface);background:var(--feedback-accent);content:"";width:7px;height:7px;box-shadow:0 0 15px var(--feedback-accent);border-radius:50%;position:absolute}@supports (color:color-mix(in lab, red, red)){.feedback-state__orbit:before,.feedback-state__orbit:after{box-shadow:0 0 15px color-mix(in srgb, var(--feedback-accent) 55%, transparent)}}.feedback-state__orbit:before{top:12px;right:10px}.feedback-state__orbit:after{opacity:.7;width:5px;height:5px;bottom:11px;left:9px}.feedback-state__signal{z-index:2;border:2px solid var(--surface);background:var(--feedback-accent);width:9px;height:9px;box-shadow:0 0 0 4px var(--feedback-accent);border-radius:50%;position:absolute;top:18px;right:15px}@supports (color:color-mix(in lab, red, red)){.feedback-state__signal{box-shadow:0 0 0 4px color-mix(in srgb, var(--feedback-accent) 13%, transparent)}}.feedback-state__icon{border:1px solid var(--feedback-accent);place-items:center;width:66px;height:66px;display:grid}@supports (color:color-mix(in lab, red, red)){.feedback-state__icon{border:1px solid color-mix(in srgb, var(--feedback-accent) 44%, var(--border))}}.feedback-state__icon{background:var(--feedback-accent);border-radius:20px 20px 20px 7px}@supports (color:color-mix(in lab, red, red)){.feedback-state__icon{background:color-mix(in srgb, var(--feedback-accent) 9%, var(--raised))}}.feedback-state__icon{color:var(--feedback-accent);box-shadow:0 12px 32px var(--feedback-accent)}@supports (color:color-mix(in lab, red, red)){.feedback-state__icon{box-shadow:0 12px 32px color-mix(in srgb, var(--feedback-accent) 12%, transparent)}}.feedback-state__icon{transition:transform .24s cubic-bezier(.2,.8,.2,1),border-color .18s,box-shadow .18s}.feedback-state:hover .feedback-state__icon,.feedback-state:focus-within .feedback-state__icon{border-color:var(--feedback-accent);box-shadow:0 16px 38px var(--feedback-accent);transform:translateY(-4px)rotate(-4deg)scale(1.04)}@supports (color:color-mix(in lab, red, red)){.feedback-state:hover .feedback-state__icon,.feedback-state:focus-within .feedback-state__icon{box-shadow:0 16px 38px color-mix(in srgb, var(--feedback-accent) 20%, transparent)}}.feedback-state:hover .feedback-state__orbit,.feedback-state:focus-within .feedback-state__orbit{border-color:var(--feedback-accent)}@supports (color:color-mix(in lab, red, red)){.feedback-state:hover .feedback-state__orbit,.feedback-state:focus-within .feedback-state__orbit{border-color:color-mix(in srgb, var(--feedback-accent) 72%, transparent)}}.feedback-state__eyebrow{color:var(--feedback-accent);font:9px/1.5 var(--mono);letter-spacing:.18em;margin:0}.feedback-state__title{max-width:24ch;color:var(--ink);letter-spacing:-.055em;text-wrap:balance;margin:0;font-size:clamp(23px,3.2vw,34px);font-weight:600;line-height:1.15}.feedback-state__description{max-width:52ch;color:var(--muted);text-wrap:pretty;margin:0;font-size:13px;line-height:1.8}.feedback-state__actions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:8px;display:flex}.feedback-state__actions .button{justify-content:center;align-items:center;gap:10px;min-height:44px;display:inline-flex}.feedback-state--compact{background:radial-gradient(ellipse at 50% 0%, var(--feedback-accent), transparent 68%), var(--night-soft);width:100%;min-height:260px;margin:14px 0;padding:24px 18px}@supports (color:color-mix(in lab, red, red)){.feedback-state--compact{background:radial-gradient(ellipse at 50% 0%, color-mix(in srgb, var(--feedback-accent) 10%, transparent), transparent 68%), var(--night-soft)}}.feedback-state--compact{box-shadow:none}.feedback-state--compact .feedback-state__content{gap:9px}.feedback-state--compact .feedback-state__visual{width:76px;height:76px;margin-bottom:0}.feedback-state--compact .feedback-state__orbit{inset:2px}.feedback-state--compact .feedback-state__signal{top:9px;right:6px}.feedback-state--compact .feedback-state__icon{border-radius:15px 15px 15px 6px;width:48px;height:48px}.feedback-state--compact .feedback-state__icon svg{width:23px;height:23px}.feedback-state--compact .feedback-state__title{font-size:19px}.feedback-state--compact .feedback-state__description{font-size:11px}.feedback-state--compact .feedback-state__actions{margin-top:3px}.feedback-state.not-found{min-height:64vh;margin-block:20px}.feedback-state.not-found .feedback-state__title{max-width:20ch;font-size:clamp(38px,6vw,66px);line-height:1.02}.feedback-state--fullscreen{background:radial-gradient(ellipse at center, var(--surface), transparent 70%), var(--night);border:0;width:100%;max-width:none;min-height:100svh;margin:0;padding:clamp(18px,5vw,60px)}@supports (color:color-mix(in lab, red, red)){.feedback-state--fullscreen{background:radial-gradient(ellipse at center, color-mix(in srgb, var(--surface) 80%, transparent), transparent 70%), var(--night)}}.feedback-state--fullscreen{box-shadow:none}.feedback-state--fullscreen .feedback-state__content{border:1px solid var(--feedback-accent);width:min(100%,760px);min-height:clamp(400px,56vh,560px);padding:clamp(28px,5vw,60px)}@supports (color:color-mix(in lab, red, red)){.feedback-state--fullscreen .feedback-state__content{border:1px solid color-mix(in srgb, var(--feedback-accent) 27%, var(--border))}}.feedback-state--fullscreen .feedback-state__content{background:radial-gradient(ellipse at 50% 0%, var(--feedback-accent), transparent 62%), var(--surface)}@supports (color:color-mix(in lab, red, red)){.feedback-state--fullscreen .feedback-state__content{background:radial-gradient(ellipse at 50% 0%, color-mix(in srgb, var(--feedback-accent) 11%, transparent), transparent 62%), var(--surface)}}.feedback-state--fullscreen .feedback-state__content{box-shadow:0 24px 70px #0005}@keyframes feedback-orbit{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){.feedback-state__orbit{animation:none}.feedback-state__icon,.feedback-state__orbit{transition:none}}.lesson-layout{grid-template-columns:247px minmax(0,1fr);align-items:start;gap:clamp(36px,5.5vw,78px);padding-top:34px;padding-bottom:90px;display:grid}.lesson-sidebar{top:calc(var(--header-height) + 48px);border-right:1px solid var(--border);scrollbar-width:thin;max-height:calc(100dvh - 132px);padding:5px 16px 12px 0;position:sticky;overflow:auto}.sidebar-back{color:var(--muted);align-items:center;gap:8px;margin-bottom:21px;font-size:10px;display:inline-flex}.sidebar-back:hover{color:var(--primary)}.sidebar-progress{border-top:1px solid var(--border);border-bottom:1px solid var(--border);gap:9px;padding:15px 0 20px;display:grid}.sidebar-progress .eyebrow{font-size:8px}.sidebar-progress>div{color:var(--muted);font:9px var(--mono);justify-content:space-between;display:flex}.sidebar-progress>div>span:last-child{color:var(--primary)}.mobile-lesson-picker{display:none}.sidebar-modules{padding:12px 0}.sidebar-modules details>summary{color:var(--muted);align-items:center;gap:8px;padding:8px 0;font-size:10px;display:flex}.sidebar-modules details>summary>span{color:var(--subtle);font:8px var(--mono)}.sidebar-modules details>summary svg{color:var(--subtle);margin-left:auto}.sidebar-modules details[open]>summary{color:var(--ink)}.sidebar-modules details[open]>summary>span{color:var(--primary)}.sidebar-modules ol{border-left:1px solid var(--border);margin:4px 0 9px;padding:0 0 0 10px;list-style:none}.sidebar-modules li a{color:var(--muted);align-items:flex-start;gap:8px;padding:5px 0;font-size:9px;line-height:1.5;display:flex}.sidebar-modules li a.active{color:var(--primary)}.sidebar-modules li a:hover{color:var(--ink)}.sidebar-dot{border:1px solid var(--border-bright);width:11px;height:11px;color:var(--on-primary);border-radius:50%;flex:0 0 11px;place-items:center;display:grid}.sidebar-dot.done{border-color:var(--primary);background:var(--primary)}.sidebar-reference{border-top:1px solid var(--border);color:var(--subtle);justify-content:space-between;align-items:center;padding-top:13px;font-size:9px;display:flex}.sidebar-reference:hover{color:var(--primary)}.lesson-article{min-width:0;max-width:970px}.lesson-header{border-bottom:1px solid var(--border);padding-bottom:23px}.breadcrumbs{color:var(--subtle);align-items:center;gap:9px;margin-bottom:22px;font-size:9px;display:flex}.breadcrumbs a:hover{color:var(--primary)}.lesson-meta{color:var(--muted);flex-wrap:wrap;align-items:center;gap:18px;font-size:9px;display:flex}.lesson-meta>span:not(.eyebrow){align-items:center;gap:6px;display:inline-flex}.lesson-meta svg{color:var(--primary)}.lesson-header h1{letter-spacing:-.07em;max-width:790px;margin-top:18px;font-size:clamp(42px,5.2vw,69px);line-height:.99}.lesson-header>.page-lead{max-width:690px;margin-top:15px}.lesson-section-nav{z-index:4;top:var(--header-height);border-bottom:1px solid var(--border);scrollbar-width:none;background:#071411f2;gap:22px;padding:13px 0;display:flex;position:sticky;overflow-x:auto}.lesson-section-nav::-webkit-scrollbar{display:none}.lesson-section-nav>a{color:var(--muted);white-space:nowrap;font-size:9px}.lesson-section-nav>a:hover{color:var(--primary)}.lesson-objective{border-left:2px solid var(--primary);background:#10231a;align-items:flex-start;gap:13px;margin:26px 0 29px;padding:17px 19px;display:flex}.lesson-objective>svg{color:var(--primary)}.lesson-objective strong{font-size:11px;font-weight:550}.lesson-objective p{color:var(--muted);margin-top:5px;font-size:11px;line-height:1.8}.lesson-section{border-top:1px solid var(--border);max-width:none;padding:27px 0 30px;scroll-margin-top:112px}.lesson-section>p:not(.eyebrow,.mental-model),.lesson-explanation,.lesson-recap ul,.experiment-guide .guided-steps,.concept-api{max-width:70ch}.lesson-section>.eyebrow{margin-bottom:11px;font-size:8px}.lesson-section h2{letter-spacing:-.05em;margin-bottom:12px;font-size:27px;line-height:1.2}.lesson-section>p:not(.eyebrow){color:var(--muted);font-size:12px;line-height:1.9}.lesson-section>.mental-model{color:var(--ink);font:22px/1.5 var(--serif);margin-bottom:13px}.concept-api{border-top:1px solid var(--border);align-items:center;gap:20px;margin-top:20px;padding-top:12px;display:flex}.concept-api code{color:var(--primary);font-size:12px}.concept-api .number-label{font-size:8px}.experiment-guide ol{counter-reset:steps;gap:0;margin:18px 0 0;padding:0;list-style:none;display:grid}.experiment-guide li{border-top:1px solid #1a3025;grid-template-columns:36px minmax(0,1fr);gap:12px;padding:12px 0;display:grid}.experiment-guide li>span{color:var(--primary);font:9px var(--mono)}.experiment-guide li>p{color:var(--muted);font-size:11px;line-height:1.8}.practice-heading{border-top:1px solid var(--border-bright);justify-content:space-between;align-items:end;gap:18px;margin:23px 0 14px;padding-top:25px;display:flex}.practice-heading .eyebrow{margin-bottom:7px;font-size:8px}.practice-heading h2{letter-spacing:-.05em;font-size:clamp(20px,2.6vw,29px)}.practice-heading>.text-link{flex:none;font-size:10px}.common-mistake{border-left:2px solid var(--accent);margin-top:35px;padding:18px 0 20px 17px}.common-mistake h2{font-size:21px}.lesson-recap ul{gap:9px;margin:15px 0 22px;padding:0;list-style:none;display:grid}.lesson-recap li{color:var(--muted);align-items:flex-start;gap:9px;font-size:11px;line-height:1.8;display:flex}.lesson-recap li svg{color:var(--primary);margin-top:3px}.lesson-complete{border-top:1px solid var(--border);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:20px;padding:18px 0;display:flex}.lesson-complete strong{font-size:12px;font-weight:550}.lesson-complete p{color:var(--muted);margin-top:4px;font-size:10px}.lesson-pagination{grid-template-columns:1fr 1fr;gap:20px;margin-top:24px;display:grid}.lesson-pagination>div:last-child{text-align:right}.lesson-pagination a{gap:5px;max-width:100%;display:inline-grid}.lesson-pagination a>span{color:var(--subtle);align-items:center;gap:6px;font-size:9px;display:inline-flex}.lesson-pagination strong{font-size:11px;font-weight:500}.lesson-pagination a:hover strong,.lesson-pagination a:hover>span{color:var(--primary)}.playground-page{padding-top:54px;padding-bottom:85px}.playground-header{border-bottom:1px solid var(--border-bright);justify-content:space-between;align-items:end;gap:30px;padding-bottom:24px;display:flex}.playground-header .eyebrow{color:var(--primary)}.playground-header h1{letter-spacing:-.07em;max-width:750px;margin-top:16px;font-size:clamp(42px,5.7vw,70px);line-height:.98}.playground-header p:not(.eyebrow){max-width:620px;color:var(--muted);margin-top:13px;font-size:12px;line-height:1.85}.playground-header>.text-link{flex:none;margin-bottom:3px;font-size:10px}.playground-example-picker{align-items:center;gap:16px;padding:17px 0;display:flex}.playground-example-picker>label{color:var(--subtle);font:8px var(--mono);letter-spacing:.1em}.playground-example-picker>.select-trigger{flex:1;max-width:560px;font-size:10px}.playground-example-picker .quiet-note{margin-left:auto;font-size:9px}.playground-bottom{border-top:1px solid var(--border);justify-content:space-between;align-items:center;gap:20px;margin-top:22px;padding-top:17px;display:flex}.playground-bottom>p{color:var(--subtle);align-items:center;gap:8px;font-size:9px;display:flex}.playground-bottom>p svg{color:var(--primary)}.standard-page{padding-top:65px;padding-bottom:95px}.challenges-page .page-header{max-width:880px}.challenge-page .lesson-header{margin-bottom:26px}.challenge-page-concept{flex-wrap:wrap;align-items:center;gap:8px 16px;margin-top:16px;display:flex}.challenge-page-concept code{border:1px solid var(--border-bright);color:var(--primary);font:10px var(--mono);padding:3px 7px}.challenge-page-concept .text-link{font-size:10px}.challenge-page-prereq{border-left-color:var(--warm);margin-top:0}.challenge-page-prereq>svg{color:var(--warm)}.challenge-page-prereq p+p{margin-top:8px}.challenge-page .lesson-pagination{border-top:1px solid var(--border);padding-top:22px}.challenge-spotlight{border:1px solid var(--border-bright);background:var(--surface);grid-template-columns:minmax(220px,.7fr) minmax(0,1.3fr);display:grid}.challenge-spotlight__progress{grid-template-columns:24px minmax(0,1fr);align-content:center;align-items:center;gap:14px 12px;padding:22px;display:grid}.challenge-spotlight__progress>svg{color:var(--primary)}.challenge-spotlight__progress>p{color:var(--muted);font-size:10px}.challenge-spotlight__progress strong{color:var(--ink);font:20px var(--mono)}.challenge-spotlight__progress>progress{grid-column:1/-1;width:100%}.challenge-spotlight__next{border-left:2px solid var(--primary);align-content:center;gap:8px;padding:22px 24px;display:grid}.challenge-spotlight__next .eyebrow{color:var(--primary);font-size:8px}.challenge-spotlight__next strong{color:var(--ink);letter-spacing:-.03em;font-size:19px;font-weight:550}.challenge-spotlight__task{max-width:620px;color:var(--muted);font-size:11px;line-height:1.7}.challenge-spotlight__cta{color:var(--primary);font:10px var(--mono);letter-spacing:.04em;align-items:center;gap:6px;margin-top:4px;display:inline-flex}.challenge-spotlight__cta svg,.challenge-card-footer svg{transition:transform .16s}.challenge-spotlight__next:hover{background:var(--interaction-wash)}.challenge-spotlight__next:hover .challenge-spotlight__cta svg{transform:translate(3px)}.challenge-spotlight__next:focus-visible{outline:2px solid var(--primary);outline-offset:-2px}.challenge-board-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px 20px;margin-top:25px;margin-bottom:12px;display:flex}.challenge-board-title{color:var(--subtle);font:400 8px var(--mono);letter-spacing:.14em}.challenge-controls{flex-wrap:wrap;flex:auto;justify-content:flex-end;align-items:center;gap:8px;display:flex}.challenge-search{width:min(240px,100%)}.challenge-module-select{width:220px;min-height:37px}.challenge-filters>button{min-height:31px;font-size:9px}.challenge-result-count{color:var(--subtle);font:9px var(--mono);flex-wrap:wrap;align-items:center;gap:6px 14px;margin-bottom:18px;display:flex}.challenge-result-count .text-link{align-items:center;gap:5px;font-size:9px;display:inline-flex}.challenge-group+.challenge-group{margin-top:32px}.challenge-group-head{grid-template-columns:auto minmax(0,1fr) auto 110px;align-items:center;gap:14px;padding:0 12px 12px;display:grid}.challenge-group-number{color:var(--primary);font:9px var(--mono);letter-spacing:.1em}.challenge-group-head h2{letter-spacing:-.03em;font-size:16px;font-weight:550}.challenge-group-count{color:var(--muted);font:9px var(--mono)}.challenge-group-head progress{width:100%}.challenge-queue{border-top:1px solid var(--border);margin:0;padding:0;list-style:none}.challenge-queue>li{border-bottom:1px solid var(--border)}.challenge-card{grid-template-columns:minmax(150px,.42fr) minmax(0,1fr) minmax(135px,.38fr);align-items:center;gap:25px;padding:20px 13px 20px 12px;display:grid}.challenge-card:hover{background:linear-gradient(90deg,#a5ed080b,#0000 90%)}.challenge-card-meta{align-items:center;gap:11px;display:flex}.challenge-index{color:var(--primary);font:13px var(--mono)}.challenge-status{border:1px solid var(--border-bright);color:var(--subtle);font:8px var(--mono);letter-spacing:.04em;white-space:nowrap;align-items:center;gap:5px;padding:3px 7px;display:inline-flex}.challenge-status.is-done{border-color:var(--primary);color:var(--primary)}.challenge-detail h3{letter-spacing:-.03em;font-size:16px}.challenge-detail>p{color:var(--muted);margin-top:4px;font-size:10px;line-height:1.7}.challenge-lesson-ref{color:var(--subtle);margin-top:8px;font-size:9px;display:block}.challenge-card-footer{justify-items:end;gap:7px;display:grid}.challenge-card-footer code{color:var(--muted);font-size:9px}.challenge-card-footer>span{color:var(--primary);font:8px var(--mono);letter-spacing:.04em;align-items:center;gap:4px;display:inline-flex}.challenge-card:hover .challenge-card-footer svg{transform:translate(2px,-2px)}.progress-summary{border-block:1px solid var(--border-bright);grid-template-columns:repeat(3,1fr);margin-top:29px;display:grid}.progress-summary>div{gap:5px;padding:17px 20px;display:grid}.progress-summary>div:first-child{padding-left:0}.progress-summary>div+div{border-left:1px solid var(--border)}.progress-summary strong{font:34px/1 var(--mono);letter-spacing:-.08em}.progress-summary strong>span{color:var(--subtle);font-size:15px}.progress-summary>div>span{color:var(--muted);font-size:9px}.continue-panel{border-left:2px solid var(--primary);background:var(--surface);justify-content:space-between;align-items:center;gap:30px;margin-top:31px;padding:23px 25px;display:flex}.continue-panel .eyebrow{color:var(--primary);font-size:8px}.continue-panel h2{letter-spacing:-.045em;margin-top:9px;font-size:22px}.continue-panel p:not(.eyebrow){max-width:680px;color:var(--muted);margin-top:6px;font-size:10px;line-height:1.8}.continue-panel .button{flex-shrink:0}.progress-modules{margin-top:47px}.progress-modules>h2,.recent-lessons>h2{letter-spacing:-.04em;margin-bottom:14px;font-size:22px}.progress-modules>a{border-top:1px solid var(--border);grid-template-columns:40px minmax(160px,.7fr) minmax(100px,1fr) 45px 20px;align-items:center;gap:13px;min-height:61px;padding-inline:12px;display:grid}.progress-modules>a:last-child{border-bottom:1px solid var(--border)}.progress-modules>a>strong{font-size:11px;font-weight:500}.progress-modules>a>span:not(.module-number){color:var(--muted);font:9px var(--mono);text-align:right}.progress-modules>a>svg{color:var(--subtle)}.progress-modules>a:hover>strong{color:var(--ink)}.progress-modules>a:hover>svg{color:var(--primary)}.progress-modules .module-number{font-size:11px}.recent-lessons{margin-top:45px}.completed-links{border-top:1px solid var(--border);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.completed-links>a{border-bottom:1px solid var(--border);min-height:45px;color:var(--muted);align-items:center;gap:9px;font-size:10px;display:flex}.completed-links>a:nth-child(odd){padding-right:18px}.completed-links>a:nth-child(2n){border-left:1px solid var(--border);padding-left:18px}.completed-links svg:first-child{color:var(--primary)}.completed-links svg:last-child{color:var(--subtle);margin-left:auto}.completed-links>a:hover{color:var(--ink)}.privacy-note{color:var(--subtle);align-items:center;gap:9px;margin-top:35px;font-size:9px;display:flex}.privacy-note>svg{color:var(--primary)}.reference-page{max-width:1070px}.reference-page .page-header{margin-bottom:25px}.reference-search{width:min(460px,100%);margin-bottom:25px}.reference-list{border-top:1px solid var(--border-bright)}.reference-list>section{border-bottom:1px solid var(--border);grid-template-columns:minmax(150px,.32fr) minmax(0,1fr);gap:25px;padding:22px 0;display:grid}.reference-list>section>code{color:var(--primary);padding-top:3px;font-size:10px}.reference-list h2{letter-spacing:-.04em;font-size:19px}.reference-list p{max-width:700px;color:var(--muted);margin:6px 0 8px;font-size:11px;line-height:1.8}.reference-list .text-link{font-size:9px}.reference-page .quiet-banner{margin-top:28px}@media (width<=1150px){.header-inner{gap:20px}.brand-cluster{min-width:188px}.brand-caption{display:none}.desktop-nav{gap:17px}.desktop-nav>a:before{display:none}.hero{grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:33px}.lesson-layout{grid-template-columns:215px minmax(0,1fr);gap:35px}}@media (width<=950px){.page-width{width:min(100% - 56px,820px)}.header-inner{width:calc(100% - 48px)}.desktop-nav{gap:13px}.desktop-nav>a{font-size:10px}.search-trigger{gap:7px}.search-trigger kbd{display:none}.hero{grid-template-columns:1fr 1fr;gap:25px;min-height:0;padding-top:30px;padding-bottom:73px}.hero-actions{flex-direction:column;align-items:flex-start}.hero-index-strip{font-size:7px}.handwritten{font-size:14px}.home-module{grid-template-columns:45px minmax(0,1fr) 76px 18px;gap:10px}.project-teaser{grid-template-columns:1fr 1.3fr}.project-teaser>span:last-child{grid-column:2}.lesson-layout{grid-template-columns:190px minmax(0,1fr);gap:27px}.sidebar-modules li a{font-size:8px}.challenge-card{grid-template-columns:minmax(130px,.4fr) minmax(0,1fr) 110px;gap:15px}.footer-main{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:24px 20px}.footer-identity{padding-top:6px}}@media (width<=800px){:root{--header-height:65px}.header-inner{gap:15px}.brand-cluster{min-width:auto}.brand{font-size:21px}.desktop-nav{justify-content:center;gap:12px}.desktop-nav>a{font-size:9px}.header-actions{gap:2px}.search-trigger{width:auto}.search-placeholder{display:none}.hero{grid-template-columns:1fr 1.03fr;gap:19px}.hero-lead{font-size:11px}.hero-copy .eyebrow{font-size:8px}.hero-actions .button{min-height:40px;font-size:10px}.hero-lab-label .number-label{font-size:8px}.home-facts{grid-template-columns:1fr repeat(3,1fr)}.home-facts>span{font-size:7px}.home-facts>div{gap:8px;padding-inline:10px}.home-facts strong{font-size:20px}.home-facts>div>span{font-size:8px}.section-intro{grid-template-columns:1fr minmax(220px,.7fr);gap:25px}.lesson-layout{padding-top:25px;display:block}.lesson-sidebar{border-right:0;border-bottom:1px solid var(--border);max-height:none;padding:0 0 13px;position:static;overflow:visible}.sidebar-back,.sidebar-progress,.sidebar-modules,.sidebar-reference{display:none}.mobile-lesson-picker{color:var(--muted);gap:6px;font-size:9px;display:grid}.mobile-lesson-picker>.select-trigger{width:100%;min-height:41px}.lesson-article{max-width:none;padding-top:20px}.lesson-section-nav{top:var(--header-height)}.challenge-card{grid-template-columns:130px minmax(0,1fr) 100px;gap:12px}}@media (width<=620px){body{padding-bottom:67px}.page-width{width:calc(100% - 38px)}.header-inner{width:calc(100% - 32px);height:59px}.brand{gap:6px;font-size:20px}.brand-symbol{margin-right:-2px;transform:skew(-17deg)scale(.86)}.desktop-nav{display:none}.header-actions{margin-left:auto}.search-trigger{min-height:35px;padding:6px 8px}.locale-button{font-size:9px}.motion-ticker{height:27px}.ticker-item{letter-spacing:.12em;gap:17px;font-size:7px}.mobile-nav{z-index:35;padding:7px 6px calc(7px + env(safe-area-inset-bottom));border-top:1px solid var(--border-bright);background:#071411f5;grid-template-columns:repeat(5,1fr);display:grid;position:fixed;bottom:0;left:0;right:0}.mobile-nav>a{min-height:49px;color:var(--muted);align-content:center;justify-items:center;gap:3px;font-size:8px;display:grid;position:relative}.mobile-nav>a.active{color:var(--primary)}.mobile-nav>a.active:before{background:var(--primary);content:"";width:22px;height:2px;position:absolute;top:-8px}.footer-main{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:25px 16px}.footer-identity,.footer-next{grid-column:1/-1}.footer-identity{padding-top:0}.footer-next{gap:10px;padding:17px}.footer-next__title{font-size:18px}.footer-nav,.footer-resources{gap:9px;padding-top:0}.footer-note{justify-content:center;align-items:center;margin-top:25px;font-size:8px}.site-footer{padding-top:32px;padding-bottom:23px}.dialog{padding:19px}.hero{grid-template-columns:1fr;gap:27px;padding-top:22px;padding-bottom:54px;display:grid}.hero:before{width:100%;height:43%;top:39%;right:0}.hero-copy h1{margin:21px 0 17px}.hero-lead{max-width:450px;font-size:12px}.hero-actions{flex-direction:row;gap:7px;margin-top:20px}.hero-actions .button{padding-inline:11px;font-size:9px}.hero-footnote{font-size:8px}.hero-index-strip{max-width:none;margin-top:22px;font-size:7px}.hero-lab{padding-top:1px}.hero-lab-label{margin-bottom:9px}.handwritten{font-size:14px}.home-demo-stage{height:177px;padding-left:24px}.home-demo-code{padding:12px 14px}.home-demo-code pre{font-size:10px}.demo-settings{gap:12px;padding-inline:10px}.demo-settings label{gap:5px;font-size:7px}.demo-controls{gap:3px}.demo-controls .button{padding-inline:8px;font-size:8px}.demo-controls .icon-button{min-width:31px}.hero-scroll{font-size:7px;bottom:19px;right:0}.home-facts{grid-template-columns:repeat(3,1fr)}.home-facts>.facts-kicker{border-bottom:1px solid var(--border);grid-column:1/-1;min-height:38px;padding:0}.home-facts>div{min-height:65px;padding:7px 8px}.home-facts>div:first-of-type{border-left:0}.home-facts strong{font-size:18px}.home-facts>div>span{font-size:7px}.home-path,.learning-method{padding-top:67px;padding-bottom:62px}.section-intro{grid-template-columns:1fr;gap:14px;margin-bottom:25px}.section-intro h2{margin-top:12px;font-size:clamp(35px,9vw,48px)}.section-intro>div:last-child>p,.section-intro>p{margin-bottom:0;font-size:11px}.home-module{grid-template-columns:30px minmax(0,1fr) 17px;gap:10px;min-height:76px}.home-module h3{font-size:13px}.home-module p{max-width:100%;font-size:7px}.module-count{display:none}.home-module>svg{width:14px}.project-teaser{grid-template-columns:1fr auto;gap:9px;padding:14px}.project-teaser .number-label{grid-column:1/-1}.project-teaser strong{font-size:13px}.project-teaser>span:last-child{grid-column:1/-1;justify-content:space-between;font-size:9px}.method-columns{grid-template-columns:1fr}.method-columns>div,.method-columns>div+div{border-left:0;border-bottom:1px solid var(--border);min-height:0;padding:15px 0 17px}.method-columns h3{margin-top:16px;font-size:21px}.method-columns p{max-width:none;margin-top:5px;font-size:10px}.method-top{justify-content:flex-start;gap:12px}.prerequisites{flex-direction:column;align-items:flex-start;gap:22px;margin-bottom:68px;padding:23px 20px}.prerequisites h2{font-size:27px}.prerequisites p{font-size:10px}.prerequisites .button{width:100%}.learning-page,.standard-page{padding-top:39px;padding-bottom:67px}.page-header{margin-bottom:25px}.page-header h1{margin-top:15px;font-size:clamp(40px,10vw,58px)}.page-lead{margin-top:13px;font-size:11px}.split-heading{grid-template-columns:1fr;gap:22px}.path-progress{border-top:1px solid var(--border);border-left:0;grid-template-columns:auto 1fr;align-items:center;gap:7px 13px;padding:13px 0 0}.path-progress>.eyebrow{grid-column:1/-1}.path-progress>strong{grid-row:span 2;font-size:25px}.path-progress>progress,.path-progress>p{grid-column:2}.path-progress>.text-link{grid-column:1/-1;margin-top:4px}.path-meta{gap:8px 14px;padding-block:11px;font-size:8px}.curriculum-toolbar{flex-direction:column;align-items:stretch;gap:10px;margin-top:19px}.filter-tabs{flex-wrap:wrap}.filter-tabs>button{min-height:32px;padding:6px 8px;font-size:8px}.inline-search{width:100%}.curriculum-module>summary{grid-template-columns:29px minmax(0,1fr) 14px;gap:8px;min-height:76px}.module-title h2{font-size:13px}.module-title p{max-width:250px;font-size:8px}.module-meta{display:none}.curriculum-module>summary>svg{width:14px}.lesson-list{margin-left:0}.lesson-list a{grid-template-columns:29px minmax(0,1fr) 17px;gap:8px;padding-inline:12px}.lesson-list strong{font-size:10px}.lesson-list small{font-size:7px}.lesson-time{display:none}.quiet-banner{flex-direction:column;align-items:flex-start;gap:9px;font-size:10px}.lesson-layout{padding-top:17px;padding-bottom:63px}.mobile-lesson-picker{font-size:8px}.lesson-article{padding-top:16px}.breadcrumbs{gap:7px;margin-bottom:16px;font-size:8px}.lesson-meta{gap:12px}.lesson-meta>.eyebrow{font-size:7px}.lesson-header h1{margin-top:15px;font-size:clamp(35px,9vw,49px)}.lesson-header>.page-lead{font-size:10px}.lesson-section-nav{gap:17px;padding-block:11px}.lesson-section-nav>a{font-size:8px}.lesson-objective{margin-block:19px 23px;padding:13px}.lesson-objective p{font-size:10px}.lesson-section{padding:22px 0 24px}.lesson-section h2{font-size:22px}.lesson-section>.mental-model{font-size:18px!important}.lesson-section>p:not(.eyebrow){font-size:10px}.concept-api{gap:13px}.concept-api code{font-size:10px}.experiment-guide li{grid-template-columns:28px 1fr;gap:8px}.experiment-guide li>p{font-size:10px}.practice-heading{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:12px}.practice-heading h2{font-size:20px}.practice-heading>.text-link{font-size:9px}.common-mistake{padding-left:13px}.common-mistake h2{font-size:19px}.lesson-recap li{font-size:10px}.lesson-complete{flex-direction:column;align-items:flex-start;gap:13px}.lesson-pagination{gap:14px}.lesson-pagination strong{font-size:9px;line-height:1.6}.lesson-pagination a>span{font-size:8px}.playground-page{padding-top:35px;padding-bottom:58px}.playground-header{flex-direction:column;align-items:flex-start;gap:14px;padding-bottom:18px}.playground-header h1{font-size:clamp(34px,9vw,48px)}.playground-header p:not(.eyebrow){font-size:10px}.playground-example-picker{flex-direction:column;align-items:stretch;gap:8px;padding-block:13px}.playground-example-picker>.select-trigger{width:100%;max-width:none;min-height:40px}.playground-example-picker .quiet-note{margin-left:0;font-size:8px}.playground-bottom{flex-direction:column;align-items:flex-start;gap:11px}.playground-bottom>p{align-items:flex-start;font-size:8px}.challenge-spotlight{grid-template-columns:minmax(0,1fr)}.challenge-spotlight__progress{padding:16px}.challenge-spotlight__next{border-top:1px solid var(--border-bright);border-left:0;padding:18px 16px}.challenge-board-head{flex-direction:column;align-items:stretch;gap:10px;margin-top:19px;margin-bottom:10px}.challenge-controls{grid-template-columns:minmax(0,1fr);display:grid}.challenge-search,.challenge-module-select{width:100%}.challenge-filters{flex-wrap:wrap}.challenge-group-head{grid-template-columns:auto minmax(0,1fr) auto;gap:6px 10px}.challenge-group-head progress{grid-column:1/-1}.challenge-card{grid-template-columns:1fr auto;gap:9px 14px;padding:16px 12px}.challenge-card-meta{grid-column:1/-1}.challenge-status{font-size:7px}.challenge-detail h3{font-size:14px}.challenge-detail>p{font-size:9px}.challenge-card-footer{align-content:center;justify-items:end}.challenge-card-footer code{font-size:8px}.challenge-card-footer>span{text-align:right;font-size:7px}.progress-summary{margin-top:22px}.progress-summary>div{padding:13px 10px}.progress-summary>div:first-child{padding-left:0}.progress-summary strong{font-size:25px}.progress-summary strong>span{font-size:11px}.progress-summary>div>span{font-size:7px;line-height:1.5}.continue-panel{flex-direction:column;align-items:flex-start;gap:16px;padding:18px}.continue-panel h2{font-size:20px}.continue-panel p:not(.eyebrow){font-size:9px}.continue-panel .button{width:100%}.progress-modules{margin-top:34px}.progress-modules>a{grid-template-columns:28px 1fr 42px 17px;gap:8px;padding:10px 12px}.progress-modules>a>strong{font-size:9px}.progress-modules progress{grid-area:2/2/auto/4}.progress-modules>a>span:not(.module-number){font-size:8px}.progress-modules>a>svg{grid-area:1/4;width:14px}.progress-modules .module-number{font-size:10px}.completed-links{grid-template-columns:1fr}.completed-links>a:nth-child(2n){border-left:0;padding-left:0}.progress-modules>h2,.recent-lessons>h2{font-size:19px}.privacy-note{align-items:flex-start;font-size:8px;line-height:1.7}.reference-list>section{grid-template-columns:1fr;gap:7px;padding-block:16px}.reference-list>section>code{font-size:9px}.reference-list h2{font-size:17px}.reference-list p{font-size:10px}.feedback-state.not-found{min-height:60vh}.feedback-state.not-found .feedback-state__title{font-size:38px}.setting-row{gap:14px}.setting-row p,.settings-progress p{font-size:10px}}@media (width<=370px){.page-width{width:calc(100% - 30px)}.brand{font-size:18px}.hero-actions{flex-direction:column;align-items:stretch}.hero-actions .button{width:100%}.hero-index-strip{font-size:6px}.handwritten{font-size:12px}.home-demo-code pre{font-size:9px}.demo-settings{gap:8px;padding-inline:7px}.demo-settings label{gap:3px;font-size:9px}.home-facts>span{font-size:6px}.home-facts>div{gap:5px;padding-inline:5px}.home-facts strong{font-size:16px}.home-facts>div>span{font-size:9px}.section-intro h2{font-size:34px}.module-title p{max-width:185px}.challenge-card{gap:8px}.challenge-card-meta{gap:7px}.challenge-detail h3{font-size:12px}.challenge-card-footer code{font-size:7px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}:root[data-motion=reduce] *,:root[data-motion=reduce] :before,:root[data-motion=reduce] :after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.learning-entry-routes{border-block:1px solid var(--border);margin:28px 0 35px}.entry-routes-heading{justify-content:space-between;gap:25px;padding-block:18px;display:flex}.entry-routes-heading .eyebrow{color:var(--primary);flex-shrink:0}.entry-routes-heading p{max-width:60ch;color:var(--muted);font-size:12px;line-height:1.8}.entry-routes-list{border-top:1px solid var(--border);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.entry-routes-list>a{border-left:1px solid var(--border);align-items:flex-start;gap:14px;padding:20px 17px;display:flex}.entry-routes-list>a:first-child{border-left:0;padding-left:17px}.entry-routes-list>a>div{flex:1;min-width:0}.entry-routes-list h2{letter-spacing:-.035em;margin-bottom:9px;font-size:17px;font-weight:500;line-height:1.3}.entry-routes-list p{color:var(--muted);font-size:11px;line-height:1.85}.entry-routes-list>a>svg{color:var(--primary);flex-shrink:0}.entry-routes-list>a:hover h2{color:var(--ink)}@media (width<=700px){.entry-routes-heading{flex-direction:column;gap:10px}.entry-routes-list{grid-template-columns:1fr}.entry-routes-list>a,.entry-routes-list>a:first-child{border-left:0;border-bottom:1px solid var(--border);padding:18px 0}.entry-routes-list>a:last-child{border-bottom:0}}.hero-next-note{max-width:60ch;color:var(--muted);margin-top:14px;font-size:11px;line-height:1.8}.lesson-format-note{color:var(--primary);font:10px/1.8 var(--mono);letter-spacing:.04em;margin-top:18px}.motion-ticker{min-height:32px;position:relative}.ticker-toggle{z-index:2;border:0;border-left:1px solid var(--border);background:var(--night-soft);min-width:40px;color:var(--primary);place-items:center;display:grid;position:absolute;inset:0 0 0 auto}.ticker-toggle:focus-visible{outline-offset:-3px}.lesson-section-nav>a{align-items:center;min-height:32px;font-size:12px;display:inline-flex}.lesson-section{scroll-margin-top:calc(var(--header-height) + 30px)}.lesson-section>p:not(.eyebrow,.mental-model),.lesson-explanation>p,.lesson-recap li{font-size:14px;line-height:1.85}.lesson-objective strong,.lesson-objective p{font-size:13px}.lesson-complete strong{font-size:14px}.lesson-complete p{font-size:12px}.lesson-pagination a{min-height:44px}.sidebar-modules li a{min-height:32px;padding-block:7px}.lesson-coach .coach-intro,.lesson-coach .prediction-options label,.lesson-coach .prediction-feedback p,.lesson-coach .mini-glossary p,.lesson-coach .walkthrough-note p{font-size:12px;line-height:1.85}.lesson-coach .coach-tabs button,.lesson-coach .mini-glossary summary{min-height:40px;font-size:12px}.curriculum-result-count{color:var(--subtle);margin:10px 0 18px;font-size:12px}.challenge-start-note{color:var(--muted);flex-wrap:wrap;align-items:center;gap:6px;margin:18px 0 26px;font-size:12px;display:flex}.challenge-start-note .text-link{font-size:inherit}input[type=range]{cursor:pointer;min-height:24px}[id=experiment],[id=challenge],.curriculum-module{scroll-margin-top:calc(var(--header-height) + 30px)}@media (width<=620px){.lesson-section-nav{gap:18px}.lesson-section-nav>a{font-size:11px}.lesson-section>p:not(.eyebrow,.mental-model),.lesson-explanation>p,.lesson-recap li{font-size:13px}.lesson-objective{padding:16px}.hero-next-note{font-size:11px}}:root{--interaction-wash:var(--primary)}@supports (color:color-mix(in lab, red, red)){:root{--interaction-wash:color-mix(in srgb, var(--primary) 9%, transparent)}}:root{--interaction-wash-strong:var(--primary)}@supports (color:color-mix(in lab, red, red)){:root{--interaction-wash-strong:color-mix(in srgb, var(--primary) 15%, transparent)}}:root{--interaction-press:var(--primary)}@supports (color:color-mix(in lab, red, red)){:root{--interaction-press:color-mix(in srgb, var(--primary) 23%, transparent)}}button,a,summary,.select-item{transition:color .16s,background-color .16s,border-color .16s,box-shadow .16s,transform .16s,filter .16s}label:has(input[type=radio]){transition:color .16s,background-color .16s,border-color .16s,box-shadow .16s,transform .16s,filter .16s}:is(button:not(:disabled),a,summary,.select-item):active{filter:brightness(.82)}:is(.button,.icon-button,.search-trigger,.locale-button,.ticker-toggle,.select-trigger,.filter-tabs>button,.coach-tabs button,.walkthrough-picks button,.lab-variation-actions button,.scroll-mode-controls>button):active:not(:disabled){transform:translateY(1px)scale(.98)}@media (hover:hover){.button.danger:hover:not(:disabled){border-color:var(--error);color:#ffd1c6;background:#512b25}:is(.search-trigger,.select-trigger):hover:not(:disabled){background-color:var(--raised)}:is(.ticker-toggle,.switch):hover:not(:disabled){background-color:var(--raised-bright);box-shadow:inset 0 0 0 1px var(--border-bright)}.switch.on:hover:not(:disabled){background-color:#567f26}:is(.desktop-nav>a,.mobile-nav>a).active:hover{color:var(--primary)}:is(.mobile-nav>a,.filter-tabs>button,.coach-tabs button):hover:not(.active,[aria-selected=true],[aria-pressed=true]),:is(.curriculum-module>summary,.sidebar-modules details>summary,.mini-glossary summary,.solution-disclosure summary,.challenge-observation summary):hover{background:var(--interaction-wash);color:var(--ink)}:is(.lesson-list a,.sidebar-modules li a,.progress-modules>a,.completed-links>a,.search-results>a):hover,:is(.home-module,.challenge-card,.entry-routes-list>a):hover{background:var(--interaction-wash)}:is(.prediction-options label,.concept-choices label):hover,:is(.walkthrough-picks button,.lab-variation-actions button,.scroll-mode-controls>button,.code-tabs .tab-buttons>button:not(.copy-button)):hover:not(:disabled,.active,[aria-pressed=true]){border-color:var(--border-bright);background:var(--interaction-wash);color:var(--ink)}.select-item:not([data-disabled]):hover{background:var(--interaction-wash);color:var(--ink)}}:is(.filter-tabs>button.active,.filter-tabs>button[aria-pressed=true]){border-color:var(--primary);background:var(--interaction-wash);color:var(--primary)}:is(.coach-tabs button[aria-selected=true],.code-tabs .tab-buttons>button.active){background:var(--interaction-wash);color:var(--ink)}:is(.walkthrough-picks button[aria-pressed=true],.lab-variation-actions button[aria-pressed=true]){border-color:var(--primary);background:var(--interaction-wash-strong);color:var(--ink)}.ticker-toggle[aria-pressed=true]{background:var(--interaction-wash-strong);box-shadow:inset 2px 0 var(--primary)}:is(.curriculum-module[open]>summary,.mini-glossary details[open]>summary,.solution-disclosure[open]>summary,.challenge-observation[open]>summary){color:var(--ink)}.curriculum-module[open]>summary{background:var(--interaction-wash)}.prereq-disclosure[open]>summary{color:var(--ink)}@media (hover:hover){.prereq-disclosure summary:hover{color:var(--ink)}}.curriculum-module>summary:hover .module-number,.curriculum-module>summary:hover>svg,.curriculum-module[open]>summary .module-number,.curriculum-module[open]>summary>svg,.prereq-disclosure[open]>summary>svg,.prereq-disclosure summary:hover>svg,.mini-glossary summary:hover>span,.solution-disclosure summary:hover>svg,.challenge-observation summary:hover>svg{color:var(--primary)}.lesson-list a:hover,.sidebar-modules li a:hover,.progress-modules>a:hover>strong,.completed-links>a:hover,.search-results>a:hover,.entry-routes-list>a:hover h2{color:var(--ink)}.lesson-list a:hover>svg,.search-results>a:hover>svg,.progress-modules>a:hover>svg,.completed-links>a:hover svg,.entry-routes-list>a:hover>svg{color:var(--primary)}.prediction-options label.is-chosen{border-color:var(--primary);background:var(--interaction-wash-strong);color:var(--ink)}.concept-choices label:has(:checked){border-color:var(--primary);background:var(--interaction-wash-strong);color:var(--ink)}:is(.prediction-options label,.concept-choices label):focus-within{outline:2px solid var(--primary);outline-offset:-2px}.select-trigger:focus-visible{border-color:var(--primary);box-shadow:0 0 0 3px var(--interaction-wash-strong)}.search-field{transition:border-color .16s,background-color .16s,box-shadow .16s}.search-field>svg{transition:color .16s}.search-field:focus-within{box-shadow:0 0 0 3px var(--interaction-wash-strong)}@media (hover:hover){.search-field:hover:not(:focus-within){border-color:var(--primary);background-color:var(--raised)}.search-field:hover>svg{color:var(--primary)}}.select-item[data-state=checked]{background:var(--interaction-wash);color:var(--ink)}:is(.home-module,.challenge-card,.entry-routes-list>a,.lesson-list a,.progress-modules>a):active{background:var(--interaction-press)}@media (width<=800px){:root{--header-height:64px}.header-inner{min-height:var(--header-height)}.hero{grid-template-columns:minmax(0,1fr);gap:32px}.hero-copy,.hero-lab{min-width:0}.hero-copy{container-type:inline-size}.hero-lead{max-width:60ch;font-size:14px}.hero-actions{flex-flow:wrap}.hero-actions .button{min-height:44px;font-size:12px}.hero-lab{justify-self:center;width:100%;max-width:620px}.dialog{overscroll-behavior:contain;max-height:calc(100dvh - 32px);overflow-y:auto}.dialog-heading{align-items:flex-start}.dialog-heading h2{line-height:1.3}.dialog-heading .icon-button{flex-shrink:0}.select-content--sm .select-item{min-height:40px;padding-block:8px;font-size:12px}.select-content{max-height:min(var(--radix-select-content-available-height), 50dvh);overflow-y:auto}.breadcrumbs{flex-wrap:wrap}.footer-nav>a,.footer-resources>a{align-items:center;min-height:44px;font-size:12px;display:inline-flex}.footer-nav,.footer-resources{gap:0}}@media (width<=620px){:root{--header-height:64px}body{padding-bottom:calc(72px + env(safe-area-inset-bottom))}.header-inner{height:var(--header-height);gap:8px;width:calc(100% - 24px)}.header-actions{gap:0}.header-actions :is(.icon-button,.search-trigger,.locale-button){justify-content:center;min-width:44px;min-height:44px}.locale-button{gap:3px}.search-trigger{padding-inline:8px}.mobile-nav>a{min-height:52px;font-size:10px}.mobile-nav{padding-top:6px;padding-bottom:calc(6px + env(safe-area-inset-bottom))}.hero-actions{flex-direction:column;align-items:stretch;gap:10px}.hero-actions .button{width:100%;padding:13px 16px;font-size:13px}.hero-footnote,.hero-next-note,.hero-index-strip{font-size:11px}.hero-copy .eyebrow{font-size:10px}.hero-lead,.page-lead,.lesson-header>.page-lead,.playground-header p:not(.eyebrow){font-size:14px;line-height:1.8}.demo-settings{flex-wrap:wrap;gap:12px;padding:14px}.demo-settings label{flex-wrap:wrap;min-height:44px;font-size:12px}.demo-settings .select-trigger{min-height:44px;font-size:13px}.demo-controls{flex-wrap:wrap;gap:8px}.demo-controls .button,.demo-controls .icon-button{min-width:44px;min-height:44px;font-size:12px}.home-facts>div>span,.home-module p,.path-meta,.module-title p,.lesson-list small{font-size:11px}.home-facts>div{flex-wrap:wrap}.home-module h3,.module-title h2,.lesson-list strong{font-size:14px}.section-intro>div:last-child>p,.section-intro>p,.method-columns p,.prerequisites p{font-size:14px;line-height:1.8}.filter-tabs>button{min-height:44px;padding:10px 12px;font-size:12px}.inline-search,.search-field{min-height:48px}.inline-search input,.search-field input{font-size:16px}.mobile-lesson-picker{font-size:12px}.mobile-lesson-picker>.select-trigger,.playground-example-picker>.select-trigger{min-height:48px;font-size:16px}.lesson-list a{padding-block:12px}.lesson-section-nav{gap:16px;padding-block:6px}.lesson-section-nav>a{min-height:44px;font-size:12px}.lesson-header .breadcrumbs,.lesson-meta>.eyebrow{font-size:10px}.lesson-objective p,.lesson-recap li,.lesson-section>p:not(.eyebrow,.mental-model),.experiment-guide li>p{font-size:14px;line-height:1.85}.lesson-pagination{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.lesson-pagination>div{min-width:0}.lesson-pagination a{align-content:start;width:100%;display:grid}.lesson-pagination>div:last-child a{text-align:right;justify-items:end}.lesson-pagination strong{text-wrap:balance;font-size:13px;line-height:1.45}.lesson-pagination a>span{font-size:11px}.practice-heading>.text-link,.playground-example-picker .quiet-note,.playground-bottom>p{font-size:12px}.challenge-card{grid-template-columns:minmax(0,1fr);gap:12px;padding:22px 12px}.entry-routes-list>a:first-child{padding-left:12px}.challenge-detail h3{font-size:19px}.challenge-detail>p{font-size:14px;line-height:1.75}.challenge-status{font-size:10px}.challenge-lesson-ref,.challenge-result-count,.challenge-result-count .text-link{font-size:12px}.challenge-spotlight__task,.challenge-spotlight__progress>p{font-size:13px}.challenge-spotlight__cta,.challenge-group-count,.challenge-group-number{font-size:11px}.challenge-card-footer{justify-items:start;gap:6px}.challenge-card-footer code{overflow-wrap:anywhere;font-size:12px}.challenge-card-footer>span{text-align:left;font-size:11px}.progress-summary>div>span{font-size:11px}.continue-panel p:not(.eyebrow),.privacy-note,.reference-list p{font-size:14px;line-height:1.8}.progress-modules>a>strong,.completed-links>a{font-size:13px}.progress-modules>a>span:not(.module-number),.reference-list>section>code{font-size:12px}.completed-links>a{min-height:56px}.footer-identity>p,.footer-next__description,.footer-note{font-size:12px}.footer-next__action{min-height:44px;font-size:12px}.footer-group-title{font-size:10px}.setting-row{flex-wrap:wrap;gap:12px}.setting-row>div{flex:180px}.setting-row strong,.settings-progress strong{font-size:14px}.setting-row p,.settings-progress p,.reset-section>p{font-size:13px;line-height:1.75}.select-trigger{min-height:44px;font-size:14px}.switch{min-width:44px;min-height:30px;padding:6px}.switch.on>span{transform:translate(15px)}.reset-section .text-button{text-align:left;min-height:44px}.dialog .button-row{gap:10px}.dialog .button-row .button{flex:160px}.dialog .quiet-note{font-size:12px}.concept-study .concept-settings{grid-template-columns:minmax(0,1fr)}.concept-study .concept-settings label{min-width:0;font-size:14px}.concept-study .concept-settings .select-trigger{width:100%;min-height:44px;font-size:16px}.concept-study .concept-playback{gap:12px}.concept-study .concept-scrubber{flex-basis:100%}.concept-study .concept-motion-note,.concept-study .concept-observations,.concept-choices label{font-size:13px;line-height:1.8}.lesson-coach .coach-tabs{flex-wrap:wrap}.lesson-coach .coach-tabs button{flex:100px;min-height:48px}.lesson-coach .coach-level{display:none}.lesson-coach .walkthrough-picks button{min-height:44px;font-size:12px}.lesson-coach .walkthrough-note .icon-button{min-width:44px;min-height:44px}.motion-lab.motion-lab .lab-workspace{grid-template-columns:minmax(0,1fr)}.motion-lab.motion-lab .code-tabs{height:48px}.motion-lab.motion-lab .code-tabs .tab-buttons>button:not(.copy-button){min-height:44px;font-size:12px}.motion-lab.motion-lab .copy-button,.motion-lab.motion-lab .editor-run,.motion-lab.motion-lab .playback-controls>.icon-button{min-width:44px;min-height:44px}.motion-lab.motion-lab .code-editor .cm-scroller{font-size:13px}.motion-lab.motion-lab .playback-controls{gap:6px;height:auto;min-height:56px;padding-inline:6px}.motion-lab.motion-lab .lab-actionbar .button{min-height:44px;font-size:12px}.motion-lab.motion-lab .lab-actionbar .button-row{width:100%}.motion-lab.motion-lab .run-status{font-size:11px}.motion-lab.motion-lab .experiment-controls{grid-template-columns:minmax(0,1fr);gap:18px;padding:18px 14px}.motion-lab.motion-lab .experiment-controls>label{font-size:13px}.motion-lab.motion-lab .experiment-controls output{font-size:12px}.motion-lab.motion-lab .experiment-controls .select-trigger{flex:1;min-height:44px;font-size:16px}.motion-lab.motion-lab .preview-help,.lab-limit-note{font-size:12px;line-height:1.8}.motion-lab.motion-lab .lab-variations{flex-direction:column}.motion-lab.motion-lab .lab-variation-actions{max-width:100%}.motion-lab.motion-lab .lab-variation-actions button{min-height:44px;font-size:12px}.motion-lab.motion-lab .scroll-mode-controls{flex-wrap:wrap}.motion-lab.motion-lab .scroll-mode-controls>button{min-height:44px;font-size:12px}}@media (width<=360px){.header-actions :is(.icon-button,.search-trigger,.locale-button){min-width:40px}.progress-summary{grid-template-columns:minmax(0,1fr)}.progress-summary>div,.progress-summary>div:first-child{padding:14px 0}.progress-summary>div+div{border-left:0;border-top:1px solid var(--border)}}@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-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-ease{syntax:"*";inherits:false}.rm-skeleton,.rm-section-skeleton{--rm-skeleton-fill:color-mix(in srgb, var(--raised) 82%, var(--border));--rm-skeleton-soft:color-mix(in srgb, var(--surface) 86%, var(--border));--rm-skeleton-edge:color-mix(in srgb, var(--primary) 28%, var(--border))}.rm-skeleton{min-height:68vh;padding-block:42px 84px}.rm-skeleton__indicator{background:var(--border);width:46px;height:2px;margin-bottom:27px;display:block;position:relative;overflow:hidden}.rm-skeleton__indicator:after{background:var(--primary);content:"";width:42%;animation:1.2s ease-in-out infinite rm-skeleton-scan;position:absolute;inset:0 auto 0 0}.rm-skeleton__content{min-width:0;display:grid}.rm-skeleton__line{background:var(--rm-skeleton-fill);border-radius:999px;max-width:100%;min-height:8px;display:block}.rm-skeleton__line--eyebrow,.rm-skeleton__line--small{min-height:6px}.rm-skeleton__line--heading{min-height:15px}.rm-skeleton__line--title{border-radius:4px;min-height:clamp(34px,4.8vw,62px)}.rm-skeleton__line--control{border:1px solid var(--border);border-radius:var(--radius);background:var(--rm-skeleton-soft);min-height:36px}.rm-skeleton__lines{gap:11px;width:100%;display:grid}.rm-skeleton__lines--compact{gap:8px}.rm-skeleton__page-header{gap:30px;margin-bottom:38px;display:grid}.rm-skeleton__page-header--progress{grid-template-columns:minmax(0,1fr) 250px;align-items:end;gap:48px}.rm-skeleton__header-copy{justify-items:start;gap:15px;display:grid}.rm-skeleton__header-lead{width:min(620px,100%);margin-top:3px}.rm-skeleton__journey-card{border-left:1px solid var(--primary);align-content:center;gap:13px;min-height:158px;padding:17px 0 7px 18px;display:grid}.rm-skeleton__toolbar,.rm-skeleton__tabs,.rm-skeleton__path-meta,.rm-skeleton__facts,.rm-skeleton__lesson-crumbs,.rm-skeleton__lesson-nav,.rm-skeleton__actions,.rm-section-skeleton__concept-controls{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.rm-skeleton__toolbar{border-top:1px solid var(--border);justify-content:space-between;gap:20px;margin:28px 0 17px;padding-top:15px}.rm-skeleton__path-meta{border-block:1px solid var(--border);gap:23px;margin:15px 0 21px;padding:14px 0}.rm-skeleton__entry-routes{border-top:1px solid var(--border);grid-template-columns:repeat(3,minmax(0,1fr));margin-top:22px;display:grid}.rm-skeleton__entry-routes>div{border-left:1px solid var(--border);gap:11px;min-height:132px;padding:22px 17px;display:grid}.rm-skeleton__entry-routes>div:first-child{border-left:0}.rm-skeleton__modules{border-top:1px solid var(--border);display:grid}.rm-skeleton__module{border-bottom:1px solid var(--border);grid-template-columns:48px minmax(0,1fr) 150px 18px;align-items:center;gap:16px;min-height:83px;padding:12px;display:grid}.rm-skeleton__module>div:not(.rm-skeleton__module-progress){gap:10px;display:grid}.rm-skeleton__module-progress{gap:8px;display:grid}.rm-skeleton__module-progress .rm-skeleton__line:last-child{min-height:4px}.rm-skeleton__home{gap:45px;display:grid}.rm-skeleton__hero{grid-template-columns:minmax(0,.92fr) minmax(360px,.88fr);align-items:center;gap:clamp(24px,5vw,66px);min-height:495px;display:grid}.rm-skeleton__hero-copy{justify-items:start;gap:15px;display:grid}.rm-skeleton__hero-lead{width:min(520px,100%);margin-top:5px}.rm-skeleton__actions{margin-top:11px}.rm-skeleton__actions .rm-skeleton__line:first-child{background:color-mix(in srgb, var(--primary) 48%, var(--surface))}.rm-skeleton__demo-shell{gap:15px;min-width:0;display:grid}.rm-skeleton__demo-label{justify-content:space-between;align-items:center;gap:14px;display:flex}.rm-skeleton__demo-panel,.rm-skeleton__workspace,.rm-section-skeleton{border:1px solid var(--border);background:var(--surface);overflow:hidden}.rm-skeleton__demo-panel{gap:19px;min-height:310px;padding:19px;display:grid}.rm-skeleton__demo-stage,.rm-section-skeleton__demo-stage,.rm-section-skeleton__concept-stage{border-block:1px solid var(--border);background-image:radial-gradient(var(--border-bright) 1px, transparent 1px);background-size:22px 22px;min-height:175px;position:relative;overflow:hidden}.rm-skeleton__demo-stage:before,.rm-section-skeleton__demo-stage:before,.rm-section-skeleton__concept-stage:before{background:var(--border-bright);content:"";height:1px;position:absolute;top:50%;left:12%;right:12%}.rm-skeleton__demo-stage span,.rm-section-skeleton__demo-stage span,.rm-section-skeleton__concept-stage span{border:1px solid var(--primary);background:color-mix(in srgb, var(--primary) 65%, var(--surface));width:46px;height:46px;position:absolute;top:calc(50% - 23px);left:18%}.rm-skeleton__demo-stage i,.rm-section-skeleton__demo-stage i,.rm-section-skeleton__concept-stage i{border:1px dashed var(--primary);width:46px;height:46px;position:absolute;top:calc(50% - 23px);left:67%}.rm-skeleton__facts{border-block:1px solid var(--border);grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));align-items:center;gap:20px;min-height:92px;padding-block:16px;display:grid}.rm-skeleton__home-path{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);align-items:start;gap:clamp(34px,7vw,90px);display:grid}.rm-skeleton__home-path>div:first-child{justify-items:start;gap:15px;display:grid}.rm-skeleton__lesson-layout{grid-template-columns:minmax(190px,240px) minmax(0,1fr);gap:clamp(27px,5vw,58px);display:grid}.rm-skeleton__lesson-sidebar{border-right:1px solid var(--border);align-content:start;gap:15px;padding-right:20px;display:grid}.rm-skeleton__sidebar-links{gap:5px;margin-top:12px;display:grid}.rm-skeleton__lesson-content{align-content:start;gap:15px;min-width:0;display:grid}.rm-skeleton__lesson-crumbs{gap:9px}.rm-skeleton__lesson-nav{margin:8px 0 12px}.rm-skeleton__objective{border:1px solid var(--rm-skeleton-edge);background:color-mix(in srgb, var(--primary) 5%, var(--surface));grid-template-columns:24px minmax(0,1fr);gap:14px;padding:17px;display:grid}.rm-skeleton__objective>div{gap:10px;display:grid}.rm-skeleton__reading{gap:15px;margin-top:14px;display:grid}.rm-skeleton__workspace{margin-top:10px}.rm-skeleton__workspace-bar,.rm-skeleton__workspace-controls{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:14px;min-height:47px;padding:0 15px;display:flex}.rm-skeleton__workspace-tabs{align-items:center;gap:17px;display:flex}.rm-skeleton__workspace-main{grid-template-columns:minmax(0,1fr) minmax(0,1fr);min-height:260px;display:grid}.rm-skeleton__code,.rm-skeleton__preview{align-content:center;gap:18px;min-width:0;padding:22px;display:grid}.rm-skeleton__code{border-right:1px solid var(--border)}.rm-skeleton__preview{background-color:var(--night-soft);background-image:radial-gradient(var(--border-bright) 1px, transparent 1px);background-size:22px 22px;justify-items:start}.rm-skeleton__preview-mark{border:1px solid var(--primary);background:color-mix(in srgb, var(--primary) 55%, var(--surface));border-radius:5px;width:52px;height:52px;margin:6px 0}.rm-skeleton__workspace-controls{border-top:1px solid var(--border);border-bottom:0;min-height:66px}.rm-skeleton__workspace-controls .rm-skeleton__line:last-child{max-width:52%;min-height:4px}.rm-skeleton__playground-header{grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:30px;display:grid}.rm-skeleton__playground-header>div{justify-items:start;gap:15px;max-width:620px;display:grid}.rm-skeleton__picker{gap:10px;max-width:510px;margin:30px 0 18px;display:grid}.rm-skeleton__challenge-spotlight{border:1px solid var(--border);grid-template-columns:minmax(220px,.7fr) minmax(0,1.3fr);min-height:150px;margin-bottom:26px;display:grid}.rm-skeleton__challenge-spotlight>div{align-content:center;gap:12px;padding:22px;display:grid}.rm-skeleton__challenge-spotlight>div:last-child{border-left:2px solid var(--rm-skeleton-edge)}.rm-skeleton__challenge-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 20px;margin-bottom:26px;display:flex}.rm-skeleton__challenge-controls{flex-wrap:wrap;gap:8px;display:flex}.rm-skeleton__challenge-group-head{grid-template-columns:auto minmax(0,1fr) 110px;align-items:center;gap:14px;padding:0 12px 12px;display:grid}.rm-skeleton--challenge .rm-skeleton__content{gap:20px}.rm-skeleton__challenge-header{border-bottom:1px solid var(--border);gap:14px;padding-bottom:22px;display:grid}.rm-skeleton__challenge-check{border:1px solid var(--border);border-left:2px solid var(--rm-skeleton-edge);gap:12px;padding:18px 20px;display:grid}.rm-skeleton__challenge-list{border-top:1px solid var(--border);display:grid}.rm-skeleton__challenge-list>div{border-bottom:1px solid var(--border);grid-template-columns:minmax(145px,.42fr) minmax(0,1fr) 125px;align-items:center;gap:24px;min-height:132px;padding:19px 13px;display:grid}.rm-skeleton__challenge-meta,.rm-skeleton__challenge-list>div>div:nth-child(2){gap:12px;display:grid}.rm-skeleton__progress-summary{border-block:1px solid var(--border);grid-template-columns:repeat(3,minmax(0,1fr));margin-bottom:30px;display:grid}.rm-skeleton__progress-summary>div{border-left:1px solid var(--border);align-content:center;justify-items:start;gap:12px;min-height:116px;padding:20px;display:grid}.rm-skeleton__progress-summary>div:first-child{border-left:0}.rm-skeleton__next-lesson{border:1px solid var(--border);background:color-mix(in srgb, var(--primary) 4%, var(--surface));justify-items:start;gap:13px;max-width:660px;min-height:172px;margin-bottom:42px;padding:22px;display:grid}.rm-skeleton__progress-map{gap:17px;display:grid}.rm-skeleton__reference-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.rm-skeleton__reference-grid article{border:1px solid var(--border);background:var(--surface);align-content:start;gap:15px;min-height:230px;padding:19px;display:grid}.rm-skeleton__code-block{background:var(--night-soft);gap:8px;min-height:84px;padding:13px;display:grid}.rm-section-skeleton{min-width:0}.rm-section-skeleton--demo{gap:15px;min-height:360px;padding:18px;display:grid}.rm-section-skeleton__demo-top{justify-content:space-between;gap:10px;display:flex}.rm-section-skeleton--demo .rm-section-skeleton__demo-stage{min-height:184px}.rm-section-skeleton--concept{gap:15px;padding:20px;display:grid}.rm-section-skeleton__concept-roles{border-bottom:1px solid var(--border);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.rm-section-skeleton__concept-roles>div{border-left:1px solid var(--border);gap:9px;min-height:95px;padding:13px;display:grid}.rm-section-skeleton__concept-roles>div:first-child{border-left:0}.rm-section-skeleton__concept-stage{border:1px solid var(--border);min-height:230px}.rm-section-skeleton__concept-controls{grid-template-columns:auto 34px minmax(0,1fr);display:grid}.rm-section-skeleton--lab,.rm-section-skeleton--editor{background:0 0;border:0}.rm-section-skeleton--lab .rm-skeleton__workspace,.rm-section-skeleton--editor .rm-skeleton__workspace{margin-top:0}@keyframes rm-skeleton-scan{0%{transform:translate(-115%)}to{transform:translate(250%)}}@media (width<=900px){.rm-skeleton__hero{grid-template-columns:minmax(0,1fr) minmax(300px,.8fr);gap:24px}.rm-skeleton__home-path{gap:38px}}@media (width<=760px){.rm-skeleton{min-height:60vh;padding-block:30px 58px}.rm-skeleton__page-header--progress,.rm-skeleton__home-path,.rm-skeleton__lesson-layout,.rm-skeleton__playground-header{grid-template-columns:minmax(0,1fr)}.rm-skeleton__page-header--progress{gap:22px}.rm-skeleton__journey-card{min-height:94px}.rm-skeleton__hero{grid-template-columns:minmax(0,1fr);gap:31px;min-height:0}.rm-skeleton__demo-shell{max-width:620px}.rm-skeleton__facts{grid-template-columns:repeat(3,minmax(0,1fr))}.rm-skeleton__facts .rm-skeleton__line:first-child{display:none}.rm-skeleton__entry-routes,.rm-skeleton__reference-grid{grid-template-columns:minmax(0,1fr)}.rm-skeleton__entry-routes>div{border-bottom:1px solid var(--border);border-left:0;min-height:92px}.rm-skeleton__module{grid-template-columns:32px minmax(0,1fr) 16px;gap:11px}.rm-skeleton__module-progress{display:none}.rm-skeleton__lesson-sidebar{border-right:0;border-bottom:1px solid var(--border);grid-template-columns:1fr 1fr;padding:0 0 18px;display:grid}.rm-skeleton__sidebar-links{grid-column:1/-1;grid-template-columns:repeat(3,minmax(0,1fr))}.rm-skeleton__workspace-main{grid-template-columns:minmax(0,1fr)}.rm-skeleton__code{border-right:0;border-bottom:1px solid var(--border);min-height:180px}.rm-skeleton__preview{min-height:165px}.rm-skeleton__challenge-spotlight{grid-template-columns:minmax(0,1fr)}.rm-skeleton__challenge-spotlight>div{padding:16px}.rm-skeleton__challenge-spotlight>div:last-child{border-top:1px solid var(--border);border-left:0}.rm-skeleton__challenge-toolbar,.rm-skeleton__challenge-controls{grid-template-columns:minmax(0,1fr);display:grid}.rm-skeleton__challenge-controls .rm-skeleton__line{width:100%!important}.rm-skeleton__challenge-group-head{grid-template-columns:auto minmax(0,1fr)}.rm-skeleton__challenge-group-head .rm-skeleton__line:last-child{grid-column:1/-1;width:100%!important}.rm-skeleton__challenge-list>div{grid-template-columns:minmax(0,1fr);gap:14px;min-height:156px}.rm-skeleton__challenge-list>div>.rm-skeleton__line:last-child{width:118px!important}.rm-skeleton__progress-summary{grid-template-columns:minmax(0,1fr)}.rm-skeleton__progress-summary>div{border-top:1px solid var(--border);border-left:0;min-height:76px}.rm-skeleton__progress-summary>div:first-child{border-top:0}.rm-section-skeleton__concept-roles{grid-template-columns:minmax(0,1fr)}.rm-section-skeleton__concept-roles>div{border-bottom:1px solid var(--border);border-left:0;min-height:72px}.rm-section-skeleton__concept-controls{grid-template-columns:auto 30px minmax(0,1fr)}}@media (width<=480px){.rm-skeleton__toolbar{flex-direction:column;align-items:stretch}.rm-skeleton__toolbar>.rm-skeleton__line{width:100%!important}.rm-skeleton__facts{gap:11px}.rm-skeleton__actions .rm-skeleton__line{width:100%!important}.rm-skeleton__workspace-controls{flex-direction:column;align-items:flex-start;padding-block:12px}.rm-skeleton__workspace-controls .rm-skeleton__line:last-child{max-width:100%;width:100%!important}.rm-skeleton__lesson-sidebar{grid-template-columns:minmax(0,1fr)}}@media (prefers-reduced-motion:reduce){.rm-skeleton__indicator:after{animation:none;transform:translate(70%)}}:root[data-motion=reduce] .rm-skeleton__indicator:after{animation:none;transform:translate(70%)}