@font-face{font-family:Nunito;font-style:normal;font-weight:200 1000;font-display:swap;src:url(../media/224e262ef877bfa4-s.2yhdohbnxjaph.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Nunito;font-style:normal;font-weight:200 1000;font-display:swap;src:url(../media/7f11d98043fdedc9-s.0vsuy7nj1h55w.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Nunito;font-style:normal;font-weight:200 1000;font-display:swap;src:url(../media/e6d00ff86ef9e699-s.1tzxx-40rxw3x.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Nunito;font-style:normal;font-weight:200 1000;font-display:swap;src:url(../media/d8cb5ab3660140cd-s.3aj86x1l4-kru.woff2)format("woff2");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-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Nunito;font-style:normal;font-weight:200 1000;font-display:swap;src:url(../media/07454f8ad8aaac57-s.p.1d8-5gtibtj96.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Nunito Fallback;src:local(Arial);ascent-override:99.71%;descent-override:34.82%;line-gap-override:0.0%;size-adjust:101.39%}._ZK5cW_className{font-family:Nunito,Nunito Fallback;font-style:normal}._ZK5cW_variable{--font-geist-sans:"Nunito", "Nunito Fallback"}
@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/5ce348bf30bf5439-s.27spqqad3wyeo.woff2)format("woff2");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;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/4fa387ec64143e14-s.3f4zuumv8svu0.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/6306c77e7c8268e4-s.34r5yzckw0h2s.woff2)format("woff2");unicode-range:U+2000-2001,U+2004-2008,U+200A,U+23B8-23BD,U+2500-259F}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/7d817b4c03b0c5f1-s.2jyz_zw3a8jit.woff2)format("woff2");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;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/bbc41e54d2fcbd21-s.30bdpjkrtcces.woff2)format("woff2");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-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/797e433ab948586e-s.p.1v5bejj26fx9h.woff2)format("woff2");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 Fallback;src:local(Arial);ascent-override:74.67%;descent-override:21.92%;line-gap-override:0.0%;size-adjust:134.59%}._8Li5zG_className{font-family:Geist Mono,Geist Mono Fallback;font-style:normal}._8Li5zG_variable{--font-geist-mono:"Geist Mono", "Geist Mono Fallback"}
@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-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial}}}@layer theme{:root,:host{--font-mono:var(--font-geist-mono);--default-font-family:var(--font-geist-sans);--default-mono-font-family:var(--font-geist-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{.visible{visibility:visible}.fixed{position:fixed}.relative{position:relative}.static{position:static}.block{display:block}.contents{display:contents}.flex{display:flex}.hidden{display:none}.inline{display:inline}.table{display:table}.h-full{height:100%}.min-h-full{min-height:100%}.grow{flex-grow:1}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.resize{resize:both}.flex-col{flex-direction:column}.truncate{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.rounded{border-radius:.25rem}.border{border-style:var(--tw-border-style);border-width:1px}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.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,)}}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--background:#f7f6f0;--foreground:#26382f;--muted:#68756c;--line:#e5e8de;--panel:#fffdf9;--green:#276448;--green-dark:#1f553d;--font-mono:var(--font-geist-mono), "SFMono-Regular", Consolas, monospace}*{box-sizing:border-box}body{background:var(--background);min-height:100vh;color:var(--foreground);font-family:var(--font-geist-sans), Arial, Helvetica, sans-serif;margin:0}button,textarea,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.58}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{outline-offset:3px;outline:3px solid #5b9b6e}.workspace{width:min(1200px,100% - 48px);margin:0 auto}.app-view[hidden]{display:none}.topbar{z-index:100;isolation:isolate;background:0 0;justify-content:space-between;align-items:center;gap:20px;width:100%;min-height:76px;padding-inline:0;display:flex;position:relative}.topbar:before{z-index:-1;clip-path:inset(-4px -100vmax);content:"";pointer-events:none;background:#fffdf9;position:absolute;inset:0;box-shadow:0 0 0 100vmax #fffdf9}.brand{color:var(--foreground);letter-spacing:-.7px;align-items:center;gap:10px;font-size:19px;font-weight:750;text-decoration:none;display:inline-flex}.brand-mark{color:#246047;width:34px;height:34px;font-family:var(--font-mono);background:#e2f0dd;border-radius:11px;place-items:center;font-size:13px;font-weight:700;display:grid}.brand-mark svg{fill:#84b64d;stroke:#245c43;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.7px;width:22px;height:22px}.primary-nav{align-items:center;gap:5px;margin-left:auto;display:flex}.nav-button{color:#65736b;background:0 0;border:1px solid #0000;border-radius:11px;justify-content:center;align-items:center;min-height:44px;padding:0 15px;font-size:13px;font-weight:650;display:inline-flex}.nav-icon svg{fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.7px;width:19px;height:19px;display:block}.nav-button:hover{color:#31483a;background:#f0f2eb}.nav-button-active,.nav-button-active:hover{color:#245944;background:#e6f1e4;border-color:#d5e6d3}.topbar-note{color:#6e786e;align-items:center;gap:8px;font-size:13px;display:flex}.status-dot{background:#49bc8a;border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 3px #e0f5eb}.button{border:0;border-radius:9px;justify-content:center;align-items:center;gap:9px;min-height:44px;padding:0 16px;font-size:13px;font-weight:650;transition:background .14s,transform .14s;display:inline-flex}.button:not(:disabled):active{transform:translateY(1px)}.button-secondary{color:#39483e;background:#fff;border:1px solid #e0e5dc}.button-secondary:hover:not(:disabled){background:#f3f5ef}.practice-home{padding:34px 0 28px}.practice-home-heading{justify-content:space-between;align-items:center;gap:24px;margin-bottom:22px;display:flex}.practice-home-heading h1{letter-spacing:-1.8px;margin:9px 0 8px;font-size:clamp(29px,4vw,42px);font-weight:760;line-height:1.1}.practice-home-copy{color:var(--muted);margin:0;font-size:15px;line-height:1.6}.featured-challenge{background:#174b38;border:1px solid #285940;border-radius:29px;align-items:center;min-height:340px;padding:clamp(22px,4vw,42px);display:flex;position:relative;overflow:hidden;box-shadow:0 14px 32px #14372826}.featured-challenge-copy{z-index:1;max-width:565px;position:relative}.featured-label{color:#d5e98c;letter-spacing:.8px;text-transform:uppercase;margin-bottom:7px;font-size:12px;font-weight:750;display:block}.featured-challenge .recommendation-type{color:#e4edc1;background:#ffffff14;border-color:#ecf4b133;margin-top:0}.featured-challenge h1{color:#fffdf4;letter-spacing:-1.5px;margin:12px 0 8px;font-size:clamp(32px,4vw,45px);line-height:1.06}.featured-challenge-copy>p{color:#e2ebdc;max-width:470px;margin:0;font-size:14px;line-height:1.6}.featured-challenge-copy .featured-next-up{color:#e4edc1;background:#0e362761;border:1px solid #ecf4b12b;border-radius:999px;max-width:100%;margin-top:11px;padding:7px 11px;font-size:11px;line-height:1.4;display:inline-block}.featured-next-up strong{color:#fffdf4;font-weight:700}.button.button-primary.featured-challenge-action{color:#173d30;background:#cde77a;justify-content:space-between;min-width:215px;margin-top:19px}.button.button-primary.featured-challenge-action:hover:not(:disabled){background:#b9d95d}.featured-challenge-action span,.concept-tile-action span{font-size:18px;line-height:1}.featured-challenge-art{filter:drop-shadow(0 12px 16px #09201833);width:290px;height:255px;position:absolute;top:50%;right:clamp(24px,7vw,96px);transform:translateY(-50%)}.pip-scene{width:100%;height:100%;position:absolute;inset:0}.pip-scene-character{width:190px;height:171px;position:absolute;bottom:0;right:36px}.concept-section{margin-top:34px}.concept-section-heading{justify-content:space-between;align-items:end;gap:15px;margin-bottom:15px;display:flex}.concept-section-heading h2{letter-spacing:-.55px;margin:5px 0 0;font-size:21px}.concept-section-heading>span{color:#777687;font-size:12px}.concept-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.concept-tile{border:1px solid var(--line);background:var(--panel);border-radius:17px;flex-direction:column;align-items:flex-start;min-width:0;padding:19px;display:flex;box-shadow:0 7px 19px #263d2d0a}.concept-tile-number{color:#426b4c;background:#d9ebd0;border-radius:11px;place-items:center;width:34px;height:34px;font-size:11px;font-weight:750;display:grid}.concept-tile-2 .concept-tile-number{color:#37694c;background:#d9ece2}.concept-tile-3 .concept-tile-number{color:#8a6940;background:#f4e4c8}.concept-tile h3{letter-spacing:-.3px;margin:14px 0 6px;font-size:16px}.concept-tile p{color:#696879;flex:1;margin:0;font-size:12px;line-height:1.6}.concept-tile-action{color:#456c4d;align-items:center;gap:7px;min-height:44px;margin-top:10px;font-size:12px;font-weight:700;display:inline-flex}.intro{text-align:center;padding:43px 0 31px}.eyebrow{color:#68846b;letter-spacing:1.15px;text-transform:uppercase;margin:0;font-size:11px;font-weight:750}.intro h1{letter-spacing:-1.7px;margin:10px 0 9px;font-size:clamp(28px,4vw,39px);font-weight:760;line-height:1.15}.intro-copy{max-width:540px;color:var(--muted);margin:0 auto;font-size:14px;line-height:1.7}.playground-intro{padding-top:31px;padding-bottom:24px}.playground-intro h1{letter-spacing:-1.2px;font-size:clamp(27px,3.2vw,34px)}.workspace-grid{grid-template-columns:minmax(0,1.6fr) minmax(310px,.82fr);align-items:start;gap:20px;display:grid}.editor-column{grid-template-columns:minmax(0,1fr);gap:0;display:grid}.panel{background:var(--panel);border:1px solid #dfe8dd;border-radius:20px;overflow:hidden;box-shadow:0 12px 30px #20392c0f}.panel-heading{color:#f4f7ed;background:#174b38;border-bottom:1px solid #285940;justify-content:space-between;align-items:center;height:54px;padding:0 18px;display:flex}.example-button{min-height:44px;padding:0 10px;font-size:11px}.file-label{font-family:var(--font-mono);align-items:center;gap:9px;font-size:12px;display:flex}.python-badge{color:#1b4b36;white-space:nowrap;background:#d5e98c;border-radius:7px;align-items:center;width:auto;height:24px;margin-left:10px;margin-right:auto;padding:0 9px;font-family:Arial,Helvetica,sans-serif;font-size:10px;font-weight:750;display:inline-flex}.panel-hint{color:#d1dfcc;font-size:11px}.editor-heading-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.example-picker{flex-wrap:wrap;flex:none;align-items:center;gap:6px;display:flex;position:relative}.example-picker>summary{cursor:pointer;align-items:center;list-style:none;display:inline-flex}.example-picker>summary::-webkit-details-marker{display:none}.example-picker-options{flex-wrap:wrap;flex:0 0 100%;gap:8px 14px;width:100%;padding:4px 0 0;display:flex}.example-picker-options .text-button{color:#d5e98c;min-height:34px;font-size:11px}.panel-heading:has(.example-picker[open]){flex-wrap:wrap;height:auto;min-height:54px;padding-block:9px}.panel-heading:has(.example-picker[open]) .editor-heading-actions{flex:1 0 100%;justify-content:flex-end}.example-picker[open]{flex:1 0 100%}.editor-wrap{background:#1e2420;min-height:360px}.editor-heading-actions .button-secondary{color:#f4f7ed;background:#20563e;border-color:#48735a}.editor-heading-actions .button-secondary:hover:not(:disabled){background:#286449}.editor-actions{background:#174b38;border-top:1px solid #285940;justify-content:space-between;align-items:center;gap:12px;min-height:62px;padding:10px 18px;display:flex}.test-case-settings{color:#e7eee2;background:#174b38;border-top:1px solid #285940;padding:12px 18px}.test-case-settings summary{color:#e4edc1;cursor:pointer;font-size:11px;font-weight:650}.test-case-settings summary:hover{color:#fffdf4}.test-case-settings p{color:#c0d0c1;margin:10px 0 8px;font-size:11px;line-height:1.5}.test-case-input{resize:vertical;color:#eff5e9;font-family:var(--font-mono);background:#133d2e;border:1px solid #42664d;border-radius:9px;padding:11px 12px;font-size:11px;display:block}.test-case-input:focus{border-color:#70a77c}.editor-note{color:#d1dfcc;margin:0;font-size:11px}.editor-button-group{align-items:center;gap:8px;display:flex}.editor-button-group .button-secondary{color:#f4f7ed;background:#20563e;border-color:#48735a}.editor-button-group .button-secondary:hover:not(:disabled){background:#286449}.button-run{color:#173d30;background:#cde77a;min-height:44px}.button-run:hover:not(:disabled){background:#b9d95d}.button-stop{color:#fff;background:#b34c48;min-height:44px}.button-stop:hover:not(:disabled){background:#963b39}.output-panel .panel-heading{height:48px}.output-heading h2{margin:0;font-size:12px;font-weight:650}.output-heading>span{color:#d1dfcc;font-size:11px}.output-content{color:#e7eee2;min-height:100px;max-height:250px;font-family:var(--font-mono);white-space:pre-wrap;overflow-wrap:anywhere;background:#14291f;border-top:1px solid #285940;margin:0;padding:15px 17px;font-size:12px;line-height:1.65;overflow:auto}.output-error{color:#ffb4a8}.fix-heading{align-items:center;gap:12px;display:flex}.fix-icon{width:39px;height:39px;color:var(--green);background:#e2f0dd;border-radius:12px;place-items:center;font-size:22px;display:grid}.fix-heading h2{letter-spacing:-.5px;margin:3px 0 0;font-size:19px}.fix-heading .eyebrow{font-size:9px}.fix-description{color:var(--muted);margin:17px 0 20px;font-size:12px;line-height:1.65}.supported-scope{color:#45634e;background:#eef5e9;border-radius:8px;margin:-8px 0 18px;padding:10px 11px;font-size:10px;line-height:1.55}.field-label{color:#33483a;margin:0 0 8px;font-size:11px;font-weight:700;display:block}.field-spaced{margin-top:15px}.optional-label{color:#858fa2;font-size:10px;font-weight:500}.field-limit{color:#8992a2;text-align:right;margin:5px 0 15px;font-size:9px}.text-field{resize:vertical;width:100%;color:var(--foreground);background:#fffefb;border:1px solid #dce5d9;border-radius:10px;outline:0;padding:11px 12px;font-size:12px;line-height:1.55;transition:border .14s,box-shadow .14s}.text-field::placeholder{color:#849386}.text-field:focus{border-color:#5b9b6e;box-shadow:0 0 0 3px #48825524}.behavior-field{min-height:96px}.fix-context{border-top:1px solid #e4e9df;margin-top:16px;padding-top:13px}.fix-context summary{color:#3b7650;cursor:pointer;font-size:11px;font-weight:650}.fix-context summary:hover{color:#20563e}.text-field:disabled{opacity:.7}.button-fix{background:var(--green);color:#fff;width:100%;min-height:42px;margin-top:13px}.button-fix:hover:not(:disabled){background:var(--green-dark)}.clarification-box{border-left:3px solid #8fbd8d;margin-top:16px;padding:2px 0 0 12px}.clarification-box>p{color:#3f4a60;margin:0 0 14px;font-size:12px;line-height:1.55}.error-box{color:#9c3b36;background:#fff7f6;border:1px solid #f2c8c5;border-radius:8px;margin-top:13px;padding:11px 12px;font-size:11px;line-height:1.55}.error-box p{margin:0}.text-button{min-height:44px;color:var(--green-dark);background:0 0;border:0;align-items:center;padding:0;font-size:11px;font-weight:700;display:inline-flex}.error-box .text-button{color:#9c3b36;margin-top:8px;text-decoration:underline}.fix-result{border-top:1px solid var(--line);margin-top:22px;padding-top:17px}.result-title-row{justify-content:space-between;align-items:center;gap:8px;display:flex}.result-title-row h3{margin:0;font-size:13px}.result-title-row .text-button{font-size:10px}.result-summary{color:#59657a;margin:11px 0;font-size:11px;line-height:1.6}.corrected-code{color:#e7eee2;max-height:245px;font-family:var(--font-mono);white-space:pre-wrap;overflow-wrap:anywhere;background:#14291f;border:1px solid #315440;border-radius:8px;margin:10px 0 15px;padding:12px;font-size:10px;line-height:1.65;overflow:auto}.code-diff{color:#e7eee2;max-height:300px;font-family:var(--font-mono);white-space:pre;background:#14291f;border:1px solid #315440;border-radius:8px;margin:10px 0 15px;padding:10px 0;font-size:10px;line-height:1.7;overflow:auto}.diff-line{min-height:1.7em;padding:0 10px;display:block}.diff-marker{-webkit-user-select:none;user-select:none;width:18px;display:inline-block}.diff-added{color:#a6efc7;background:#173c2e}.diff-removed{color:#ffb3b3;background:#4a252b}.edit-submission-button{margin:12px auto 0;text-decoration:underline;display:block}.code-comparison{margin:4px 0 14px}.code-comparison summary{color:#39724f;cursor:pointer;font-size:10px;font-weight:650}.original-code{color:#e7eee2;max-height:245px;font-family:var(--font-mono);white-space:pre-wrap;overflow-wrap:anywhere;background:#14291f;border:1px solid #315440;border-radius:8px;margin:10px 0 0;padding:12px;font-size:10px;line-height:1.65;overflow:auto}.explanation h4{margin:0 0 8px;font-size:11px}.explanation-heading{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-bottom:8px;display:flex}.explanation-heading h4{margin:0}.explanation ul{color:#59657a;gap:6px;margin:0;padding-left:17px;font-size:10px;line-height:1.55;display:grid}.narration-controls{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.narration-controls .text-button{font-size:10px;text-decoration:underline}.narration-controls .text-button:disabled{cursor:not-allowed;opacity:.5;text-decoration:none}.narration-status{color:#59657a;font-size:10px}.example-tests{border-top:1px solid var(--line);margin-top:14px;padding-top:12px}.example-tests summary{color:#39724f;cursor:pointer;font-size:10px;font-weight:650}.example-test-input{font-family:var(--font-mono);margin-top:7px;font-size:10px}.expectation-source{color:#6b7588;margin:7px 0 0;font-size:10px}.expectation-source strong{color:#45634e}.ai-examples-button{text-align:left;margin-top:9px;text-decoration:underline}.review-expectations{color:#59657a;align-items:flex-start;gap:8px;margin-top:10px;font-size:10px;line-height:1.5;display:flex}.review-expectations input{flex:none;margin:1px 0 0}.verify-examples-button{white-space:normal;width:100%;margin-top:13px}.example-case-error{color:#9c3b36;margin:8px 0 0;font-size:10px;line-height:1.5}.example-verification{border-top:1px solid var(--line);gap:12px;margin-top:16px;padding-top:13px;display:grid}.verification-side h4{color:#344057;margin:0 0 7px;font-size:11px}.example-results-scroll{max-width:100%;overflow-x:auto}.example-results{border-collapse:collapse;text-align:left;width:100%;font-size:9px}.example-results th,.example-results td{border-bottom:1px solid var(--line);overflow-wrap:anywhere;vertical-align:top;max-width:180px;padding:6px}.example-results th{color:#59657a;font-weight:700}.example-results code{font-family:var(--font-mono)}.example-error{color:#9c3b36}.related-practice{background:#eef5e9;border-radius:8px;margin-top:14px;padding:11px 12px}.concept-label{color:#456c4d;letter-spacing:.75px;text-transform:uppercase;font-size:9px;font-weight:750}.related-practice p{color:#45634e;margin:5px 0 0;font-size:10px;line-height:1.55}.apply-button{width:100%;margin-top:13px}.footer{color:#8992a2;justify-content:space-between;gap:20px;padding:25px 0 30px;font-size:10px;display:flex}.spinner{border:2px solid;border-right-color:#0000;border-radius:50%;width:14px;height:14px;animation:.7s linear infinite spin}.comparison-columns{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.comparison-columns h4{margin-bottom:4px;font-size:10px}.practice-unavailable{color:#69758a;font-size:11px;line-height:1.55}.practice-link{margin-top:8px}.lesson-library{border-top:1px solid var(--line);margin:45px 0 0;padding-top:30px}.lesson-library h2{letter-spacing:-.6px;margin:8px 0 18px;font-size:22px}.lesson-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.lesson-tile,.practice-card,.prediction-result{border:1px solid var(--line);background:var(--panel);border-radius:12px;padding:18px}.lesson-tile h3{margin:0 0 8px;font-size:15px}.lesson-tile p,.practice-explanation{color:#59657a;font-size:13px;line-height:1.65}.lesson-tile .text-button{text-decoration:underline}.exercise-count{color:#8992a2;font-size:11px}.practice-view{max-width:850px;margin:28px auto 60px}.practice-back{margin-bottom:28px;text-decoration:underline}.practice-view>h1{letter-spacing:-1px;margin:8px 0;font-size:clamp(25px,4vw,34px)}.practice-explanation{max-width:760px;margin:8px 0 22px}.practice-card h2,.prediction-result h2{margin:8px 0 15px;font-size:18px}.practice-example,.test-output{color:#d8e3ee;font-family:var(--font-mono);white-space:pre-wrap;background:#20232d;border-radius:8px;padding:15px;font-size:12px;line-height:1.7;overflow:auto}.practice-card .field-label{margin:12px 0 6px}.practice-card>.button{margin-top:13px}.prediction-result{background:#f5f8f1;border-color:#dce8d7;margin:18px 0}.prediction-result p{color:#59657a;font-size:13px;line-height:1.6}.exercise-card{margin-top:18px}.exercise-heading{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.exercise-heading h2{margin:6px 0 14px}.exercise-card>p{color:#59657a;font-size:13px;line-height:1.6}.practice-editor{border:1px solid #343743;border-radius:9px;overflow:hidden}.practice-actions{flex-wrap:wrap;align-items:center;gap:10px;margin-top:13px;display:flex}.button-primary{background:var(--green);color:#fff}.button-primary:hover:not(:disabled){background:var(--green-dark)}.attempt-count{color:#69758a;margin-left:auto;font-size:11px}.hint-list{color:#4d5870;gap:8px;margin:16px 0 0;padding:0 0 0 23px;font-size:12px;line-height:1.6;display:grid}.test-feedback,.completion-summary{border-radius:9px;margin-top:15px;padding:13px 15px;font-size:12px;line-height:1.6}.test-success{color:#236a46;background:#f0fbf5;border:1px solid #b8e3cd}.test-failure{color:#914a40;white-space:pre-wrap;overflow-wrap:anywhere;background:#fff7f5;border:1px solid #efcfca}.test-output{max-height:180px;margin:12px 0 0}.completion-summary{color:#45634e;background:#f2f7ee;border:1px solid #dce8d7}.completion-summary h3{margin:0;font-size:14px}.completion-summary .button{margin-top:4px}.pending-save-list{gap:8px;margin-top:13px;display:grid}.pending-save-list>div{color:#914a40;background:#fff7f5;border:1px solid #efcfca;border-radius:9px;padding:10px 12px;font-size:11px}.pending-save-list p{margin:0 0 5px}.my-practice{background:radial-gradient(at 100% 0,#dbebd185,#0000 35%),linear-gradient(135deg,#fff 5%,#fbfcf8 100%);border:1px solid #e5e8de;border-radius:20px;margin:36px 0 28px;padding:clamp(19px,3vw,30px);position:relative;overflow:hidden;box-shadow:0 18px 48px #273c2c14}.my-practice-heading{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.my-practice-heading h2{letter-spacing:-.9px;margin:5px 0 4px;font-size:clamp(23px,3vw,29px)}.practice-heading-copy{color:#69758a;margin:0;font-size:13px;line-height:1.55}.history-refresh{color:#555b72;background:#ffffffbf;border:1px solid #e1e6df;border-radius:9px;flex:none;align-items:center;gap:6px;padding:8px 11px;font-size:12px;display:inline-flex}.history-refresh span{font-size:17px;line-height:.8}.history-state{background:#ffffffc2;border:1px solid #e5e8de;border-radius:13px;align-items:center;gap:13px;margin-top:22px;padding:16px;display:flex}.history-state-icon{width:36px;height:36px;color:var(--green);background:#e2f0dd;border-radius:11px;flex:0 0 36px;place-items:center;font-size:21px;display:grid}.history-state strong,.history-error strong{color:#282e40;font-size:13px}.history-state p,.history-error p{color:#727b8e;margin:4px 0 0;font-size:12px;line-height:1.55}.practice-data-note,.history-message{color:#69758a;font-size:11px;line-height:1.55}.practice-data-note{margin:10px 0 20px}.common-patterns-card{background:#ffffffd1;border:1px solid #e5e8de;border-radius:15px;min-width:0;padding:17px}.pattern-tracking-notice{color:#725c3e;background:#fff8ed;border-left:3px solid #d7ad70;margin:10px 0 0;padding:6px 9px;font-size:11px;line-height:1.45}.common-patterns-card h3{color:#2b3042;letter-spacing:-.3px;margin:4px 0;font-size:18px}.common-patterns-intro,.common-patterns-empty{color:#69758a;margin:0;font-size:12px;line-height:1.55}.common-pattern-list{gap:0;margin:12px 0 0;padding:0;list-style:none;display:grid}.common-pattern{border-top:1px solid #edf0e9;justify-content:space-between;align-items:center;gap:16px;padding:14px 0;display:flex}.common-pattern-copy{flex:auto;gap:4px;min-width:0;display:grid}.common-pattern-copy strong{color:#35483a;font-size:13px}.common-pattern-copy span{color:#69758a;font-size:11px;line-height:1.45}.pattern-meter{appearance:none;color:#527d4f;background:#e4eadf;border:0;border-radius:999px;width:min(320px,100%);height:9px;display:block}.pattern-meter::-webkit-progress-bar{background:#e4eadf;border-radius:999px}.pattern-meter::-webkit-progress-value{background:#527d4f;border-radius:999px}.pattern-meter::-moz-progress-bar{background:#527d4f;border-radius:999px}.common-pattern-copy small{color:#8b7764;font-size:10px}.common-pattern-action{flex:none;min-height:36px;padding:8px 11px;font-size:11px}.recommendation-card{background:#f2f6ee;border:1px solid #dce8d7;border-radius:15px;margin-top:22px;padding:19px}.recommendation-type{color:#4d7658;letter-spacing:.3px;text-transform:uppercase;background:#ffffffa8;border:1px solid #d9e5d3;border-radius:20px;margin-top:13px;padding:5px 8px;font-size:9px;font-weight:700;display:inline-block}.recommendation-card h3{color:#303e32;letter-spacing:-.45px;max-width:360px;margin:9px 0 6px;font-size:18px;line-height:1.25}.recommendation-card>p:not(.eyebrow){color:#59695d;max-width:420px;margin:0;font-size:12px;line-height:1.6}.recommendation-action{background:var(--green);color:#fff;width:auto;margin-top:16px}.recommendation-action:hover:not(:disabled){background:var(--green-dark)}.recommendation-action span{font-size:18px}.history-disclosure{border-top:1px solid #e9ece5;border-bottom:1px solid #e9ece5;margin-top:18px}.history-disclosure>summary{color:#35483a;cursor:pointer;justify-content:space-between;align-items:center;gap:12px;padding:14px 2px;font-size:12px;font-weight:650;list-style-position:inside;display:flex}.history-disclosure>summary span{color:#7d887e;font-size:10px;font-weight:450}.history-list{padding-bottom:8px}.history-list ul{border-top:1px solid #eceee8;gap:0;margin:0;padding:0;list-style:none;display:grid}.history-list li{border-bottom:1px solid #eceee8;align-items:center;gap:11px;padding:11px 2px;display:flex}.history-attempt-detail{flex:1;gap:4px;min-width:0;display:grid}.history-attempt-detail strong{color:#3a4a3d;text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.history-attempt-detail span,.history-list time{color:#69758a;font-size:10px;line-height:1.45}.history-list time{color:#9298a6;flex:none}.outcome-icon{color:#28875b;background:#e4f7ed;border-radius:9px;flex:0 0 8px;place-items:center;width:25px;height:25px;font-size:12px;font-weight:750;display:grid}.outcome-icon-failed,.outcome-icon-error,.outcome-icon-timed_out{color:#bb654d;background:#fff0eb}.history-error{background:#fff8f5;border:1px solid #f0d9d3;border-radius:13px;justify-content:space-between;align-items:center;gap:14px;margin-top:20px;padding:14px;display:flex}.pip-companion{z-index:20;align-items:flex-end;gap:12px;display:flex}.pip-companion-floating{flex-direction:row-reverse;position:fixed;bottom:20px;right:max(16px,50vw - 600px)}.pip-companion-inline{justify-content:flex-end;width:min(850px,100%);margin:12px auto 34px}.pip-companion-button{background:linear-gradient(145deg,#fffdf4,#eaf4e4);border:2px solid #cfe2c7;border-radius:50%;flex:0 0 70px;place-items:center;width:70px;height:70px;padding:5px;transition:transform .15s,box-shadow .15s;display:grid;position:relative;box-shadow:0 8px 24px #254a3129}.pip-companion-button:hover{transform:translateY(-2px)rotate(-2deg);box-shadow:0 12px 28px #254a3133}.pip-companion-button:focus-visible{outline-offset:4px;outline:3px solid #5b9b6e}.pip-companion-halo{pointer-events:none;border:1px solid #53926145;border-radius:50%;position:absolute;inset:-7px}.pip-companion-art{z-index:1;width:56px;height:52px;animation:3.6s ease-in-out infinite pip-companion-idle;display:block;position:relative;overflow:visible}.pip-companion-thinking .pip-companion-art{animation:1.6s ease-in-out infinite pip-companion-think}.pip-companion-encouraging .pip-companion-art{animation:.7s ease-out pip-companion-encourage}.pip-companion-celebrating .pip-companion-art{animation:.9s cubic-bezier(.2,.8,.3,1) pip-companion-celebrate}.pip-companion-thinking .pip-head,.pip-companion-thinking .pip-face{transform-origin:50%;animation:1.6s ease-in-out infinite pip-head-tilt}.pip-companion-encouraging .pip-head{transform-origin:50%;animation:.65s ease-out pip-head-nod}.pip-companion-celebrating .pip-accessory{transform-origin:50%;animation:.7s ease-out pip-leaf-wiggle}.pip-companion-live,.pip-status-dot{background:#65b785;border:2px solid #fffdf9;border-radius:50%;flex:none;width:9px;height:9px;box-shadow:0 0 0 2px #d9eedb}.pip-companion-live{z-index:2;position:absolute;top:7px;right:6px}.pip-bubble{background:#fffdf9;border:1px solid #dfe8d9;border-radius:18px;width:min(300px,100vw - 112px);padding:14px 15px;position:relative;box-shadow:0 12px 32px #293f2e24}.pip-bubble-heading{align-items:center;gap:8px;min-height:22px;display:flex}.pip-bubble-heading strong{color:#294334;font-size:13px}.pip-mood-label{color:#758176;text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:10px;overflow:hidden}.pip-dismiss{color:#667267;background:0 0;border:0;border-radius:9px;flex:0 0 32px;place-items:center;width:32px;height:32px;margin:-5px -7px -5px auto;font-size:19px;display:grid}.pip-dismiss:hover{background:#f1f5ec}.pip-bubble>p{color:#536458;margin:9px 0 0;font-size:12px;line-height:1.55}.pip-hint-button{color:#2d6848;background:#eaf3e4;border:0;border-radius:11px;min-height:38px;margin-top:10px;padding:0 12px;font-size:11px;font-weight:700}.pip-hint-button:hover{background:#dcebd4}.pip-confetti{color:#e3aa5d;pointer-events:none;font-size:22px;animation:.9s ease-out both pip-confetti-pop;position:absolute;top:-10px;right:13px}@keyframes pip-companion-idle{0%,to{transform:translateY(0)}50%{transform:translateY(-3px)}}@keyframes pip-companion-think{0%,to{transform:translateY(0)rotate(0)}50%{transform:translateY(-2px)rotate(-2deg)}}@keyframes pip-head-tilt{0%,to{transform:rotate(0)}50%{transform:rotate(-3deg)}}@keyframes pip-head-nod{0%,to{transform:rotate(0)}45%{transform:rotate(5deg)}}@keyframes pip-companion-encourage{0%,to{transform:translateY(0)}35%{transform:translateY(-4px)rotate(-3deg)}}@keyframes pip-companion-celebrate{0%,to{transform:translateY(0)rotate(0)scale(1)}35%{transform:translateY(-9px)rotate(-5deg)scale(1.05)}70%{transform:translateY(1px)rotate(4deg)scale(1.02)}}@keyframes pip-leaf-wiggle{0%,to{transform:rotate(0)}45%{transform:rotate(14deg)}}@keyframes pip-confetti-pop{0%{opacity:0;transform:translateY(8px)scale(.6)rotate(-20deg)}35%{opacity:1;transform:translateY(-3px)scale(1.1)rotate(8deg)}to{opacity:.65;transform:translateY(-8px)scale(1)rotate(0)}}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width:780px){.workspace{width:min(100% - 28px,600px);padding-bottom:84px}.topbar{padding-inline:14px;gap:7px 14px;min-height:65px;padding-top:8px;padding-bottom:8px}.primary-nav{z-index:50;width:100%;padding:7px 12px calc(7px + env(safe-area-inset-bottom));background:#fffdf9;border-top:1px solid #e5e8de;justify-content:space-around;gap:6px;margin-left:0;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -8px 24px #20392c14}.nav-button{border-radius:14px;flex-direction:column;flex:1;gap:3px;min-height:56px;padding:5px 8px}.nav-icon{line-height:0;display:block}.nav-label{font-size:10px}.topbar-note{display:none}.pip-companion-floating{z-index:110;top:6px;bottom:auto;right:14px}.pip-companion-floating .pip-companion-button{flex-basis:54px;width:54px;height:54px;padding:3px}.pip-companion-floating .pip-companion-art{width:46px;height:43px}.intro{padding:36px 0 25px}.playground-intro{padding:26px 0 19px}.workspace-grid{grid-template-columns:1fr}.workspace-grid>*{min-width:0}.lesson-grid,.concept-grid{grid-template-columns:1fr}.common-pattern{flex-direction:column;align-items:flex-start;gap:10px}.history-disclosure>summary{flex-direction:column;align-items:flex-start;gap:5px}.fix-panel{grid-row:auto}.editor-wrap{min-height:330px}.panel-heading{flex-wrap:wrap;gap:8px;height:auto;min-height:49px;padding:9px 12px}.editor-heading-actions,.editor-actions{flex-wrap:wrap}.footer{flex-direction:column;gap:7px;padding-bottom:22px}.featured-challenge-art{opacity:1;width:170px;height:158px;top:auto;bottom:6px;right:0;transform:none}.featured-challenge-copy{max-width:62%}}@media (max-width:420px){.workspace{width:calc(100% - 20px)}.topbar{padding-inline:10px}.brand{font-size:17px}.featured-challenge{min-height:380px;padding:19px}.featured-challenge-copy{max-width:62%}.featured-challenge-art{width:135px;height:130px;bottom:5px;right:-4px}.pip-scene-character{width:99px;height:91px;right:17px}.featured-challenge h1{letter-spacing:-.9px;font-size:clamp(26px,7.5vw,31px)}.button.button-primary.featured-challenge-action{width:100%;min-width:0;font-size:11px}.featured-next-up{overflow-wrap:anywhere}.concept-section-heading{flex-direction:column;align-items:flex-start;gap:5px}.example-button{min-height:44px;padding:0 10px;font-size:11px}.fix-panel{padding:16px}.editor-note{max-width:150px;line-height:1.4}.editor-button-group{gap:6px}.editor-button-group .button{padding:0 10px;font-size:11px}.comparison-columns{grid-template-columns:1fr}.exercise-heading{flex-direction:column}.attempt-count{margin-left:0}.pip-companion-floating{top:6px;right:14px}.pip-companion-button{flex-basis:54px;width:54px;height:54px}.pip-companion-art{width:46px;height:43px}.pip-companion-inline{max-width:100%;margin-bottom:24px}}@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{--background:#f5f2df;--foreground:#173e31;--muted:#6d8073;--line:#d8e1d2;--panel:#fffff9;--green:#315d43;--green-dark:#214a38}body{background:radial-gradient(circle at 50% 0%, #ffffffa6, transparent 40%), var(--background)}.workspace{max-width:1120px;position:relative}.workspace>:not(.forest-backdrop){position:relative}.forest-backdrop{z-index:-1;pointer-events:none;position:fixed;inset:0;overflow:hidden}.canopy{fill:#214a38;opacity:.07;width:min(23vw,320px);height:100vh;min-height:700px;position:absolute;top:0}.canopy-left{left:0}.canopy-right{right:0}.glow{opacity:.3;border-radius:50%;width:32rem;height:32rem;position:absolute}.glow-one{background:radial-gradient(circle,#dbea95,#0000 68%);top:-16rem;left:18%}.glow-two{background:radial-gradient(circle,#efcc85,#0000 68%);bottom:-19rem;right:4%}.topbar{min-height:88px}.topbar:before{box-shadow:none;background:0 0}.brand{font-size:24px;font-weight:900}.brand-mark{background:#d8eb8e;border-radius:16px;width:40px;height:40px;box-shadow:0 4px #214a38}.nav-button{border-radius:999px;gap:9px;font-weight:800}.nav-icon{display:block}.nav-button-active,.nav-button-active:hover{background:#e4edc6;border-color:#cddbb6}.topbar-note{font-size:11px}.featured-challenge{background:#214a38;min-height:330px;box-shadow:0 8px #173e31,0 18px 42px #173e312e}.featured-challenge-copy{max-width:64%}.featured-challenge h1{font-size:clamp(32px,4vw,48px);font-weight:900}.featured-challenge-art{width:260px;height:280px;top:auto;bottom:-20px;right:12px;transform:none}.pip-scene{opacity:.45}.pip-scene-character{width:240px;height:255px;bottom:-12px;right:0}.pip-mascot{width:100%;height:100%;display:block}.button{border-radius:999px;font-weight:900;transition:transform .18s,box-shadow .18s,background-color .18s}.button-primary,.button-run,.button-fix{box-shadow:0 4px #173e31}.button.button-primary.featured-challenge-action{background:#d5eb82;box-shadow:0 4px #8cab49}.button:hover:not(:disabled){transform:translateY(-2px)}.button:active:not(:disabled){box-shadow:none;transform:translateY(2px)}.trail-facts{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:28px;display:grid}.trail-facts>div{border:1px solid var(--line);background:#fffff9d1;border-radius:24px;align-items:center;gap:12px;padding:18px;display:flex;box-shadow:0 5px #2e4a3814}.trail-facts span:not(.trail-fact-icon){color:var(--muted);font-size:11px;font-weight:700;display:block}.trail-facts strong{margin-top:3px;font-size:14px;font-weight:900;display:block}.trail-fact-icon{color:#628d43;background:#edf4d5;border-radius:15px;flex:0 0 42px;place-items:center;height:42px;font-size:24px;display:grid}.trail-facts>div:nth-child(2) .trail-fact-icon{color:#de7859;background:#fff0e7}.trail-facts>div:nth-child(3) .trail-fact-icon{color:#d5912d;background:#fff5cf}.concept-section-heading h2{font-size:26px;font-weight:900}.concept-tile,.panel,.practice-card,.common-patterns-card,.recommendation-card,.my-practice{background:#fffff9d1;border-radius:24px;box-shadow:0 5px #2e4a3814}.concept-tile{padding:24px}.concept-tile-number{background:#e9f2c7;border-radius:16px;width:44px;height:44px;font-size:14px}.concept-tile h3{font-size:19px;font-weight:900}.concept-tile p{color:var(--muted);font-size:13px}.concept-tile-action{font-weight:900}.practice-card h2,.my-practice-heading h2,.practice-view>h1,.intro h1{color:#173e31;font-weight:900}.text-field{border-radius:16px}.fix-icon{color:#54753a;background:#e9f2c7}.recommendation-card{background:#edf2db}.pip-companion-art{width:56px;height:60px}.pip-companion-button{background:#e9f2c7;box-shadow:0 4px #b2c58e,0 10px 24px #173e3126}.workspace>.pip-companion-floating{position:fixed}.footer{color:#7a8e81}@media (max-width:900px){.topbar-note{display:none}.trail-facts{gap:10px}.trail-facts>div{gap:8px;padding:13px}.trail-facts strong{font-size:12px}}@media (max-width:780px){.topbar{min-height:72px}.brand{font-size:21px}.primary-nav{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#fffff9f0}.featured-challenge{min-height:355px;padding:25px}.featured-challenge-copy{max-width:70%}.featured-challenge h1{font-size:34px}.featured-challenge-art{width:175px;height:200px;bottom:-12px;right:-18px}.pip-scene-character{width:170px;height:180px;right:0}.trail-facts{grid-template-columns:1fr}.trail-facts>div{padding:14px 18px}.trail-facts strong{font-size:14px}.concept-section-heading h2{font-size:23px}.workspace>.pip-companion-floating{top:8px;bottom:auto}.pip-companion-floating .pip-bubble{position:absolute;top:68px;right:0}}@media (max-width:420px){.featured-challenge{min-height:410px;padding:22px}.featured-challenge-copy{max-width:100%}.featured-challenge h1{font-size:32px}.featured-challenge-copy>p,.featured-challenge-copy .featured-next-up{max-width:85%}.button.button-primary.featured-challenge-action{width:auto;max-width:70%;padding:0 14px}.featured-challenge-art{width:125px;height:150px;bottom:-10px;right:-10px}.pip-scene-character{width:125px;height:135px}}.learning-journey{grid-template-columns:repeat(3,1fr);gap:12px;margin:0 0 26px;padding:0;list-style:none;display:grid}.learning-journey li{color:#6d8073;background:#fffff9b3;border:1px solid #d8e1d2;border-radius:18px;align-items:center;gap:10px;padding:14px;font-size:13px;font-weight:800;display:flex}.learning-journey li>span{color:#54753a;background:#edf2db;border-radius:50%;flex:0 0 28px;place-items:center;height:28px;display:grid}.learning-journey .journey-current{color:#214a38;background:#e9f2c7;border-color:#9fbe72}.learning-journey .journey-done>span{color:#fff;background:#315d43}.error-lesson{border-top:1px solid #d8e1d2;margin-top:24px;padding-top:22px}.error-lesson h3{color:#173e31;margin:8px 0 18px;font-size:23px;font-weight:900;line-height:1.2}.error-lesson h4{margin:20px 0 10px;font-size:14px}.lesson-diagnosis{background:#edf2db;border-left:4px solid #8cab49;border-radius:0 14px 14px 0;padding:14px;font-size:13px;line-height:1.6}.lesson-diagnosis p{margin:5px 0 0}.lesson-teaching{white-space:pre-line;color:#496452;font-size:14px;line-height:1.75}.lesson-example{color:#edf2db;font-family:var(--font-mono);background:#214a38;border-radius:16px;padding:16px;font-size:12px;overflow:auto}.lesson-lock-note{color:#765b2f;background:#fff5cf;border-radius:14px;padding:12px;font-size:12px;line-height:1.6}.lesson-check{margin-top:22px}.lesson-check-heading{color:#617568;justify-content:space-between;gap:8px;font-size:12px;font-weight:800;display:flex}.lesson-check progress{accent-color:#74a64a;width:100%;height:10px;margin:8px 0 16px}.lesson-check fieldset{border:0;margin:0;padding:0}.lesson-check legend{white-space:pre-line;margin-bottom:12px;font-size:15px;font-weight:900}.lesson-option{color:#315544;cursor:pointer;background:#fffff9;border:1px solid #d8e1d2;border-radius:14px;align-items:flex-start;gap:10px;margin-bottom:10px;padding:13px;font-size:13px;line-height:1.5;display:flex}.lesson-option input{accent-color:#315d43;flex:none;margin-top:3px}.lesson-option-selected{background:#edf2db;border-color:#8cab49}.lesson-feedback{color:#315544;background:#e9f2c7;border-radius:14px;padding:12px;font-size:13px;line-height:1.6}.lesson-feedback-retry{color:#765b2f;background:#fff5cf}.workspace-grid:has(.error-lesson){grid-template-columns:minmax(0,1fr) minmax(350px,1.05fr)}@media (max-width:780px){.learning-journey{gap:7px}.learning-journey li{text-align:center;flex-direction:column;padding:12px 6px;font-size:11px}.workspace-grid:has(.error-lesson){grid-template-columns:1fr}}.tutor-screen{scroll-margin-top:18px}.tutor-screen:focus{outline:none}.learning-journey li>span{aspect-ratio:1;flex:0 0 28px;width:28px;min-width:28px;line-height:1}.tutor-lesson-screen{max-width:850px;margin:0 auto 30px;padding:clamp(20px,4vw,36px)}.tutor-lesson-screen-heading{justify-content:space-between;align-items:center;gap:14px;display:flex}.tutor-lesson-screen .error-lesson{border-top:0;margin-top:14px;padding-top:0}.tutor-lesson-screen .error-lesson h3{font-size:clamp(23px,3vw,30px)}.tutor-lesson-screen .lesson-check{margin-top:16px}.tutor-lesson-screen .lesson-option{padding:16px}@media (max-width:780px){.learning-journey li>span{flex:0 0 28px;width:28px;height:28px}.tutor-lesson-screen-heading{flex-direction:column;align-items:flex-start;gap:8px}}.tutor-unlocked-result{border-top:0;margin-top:20px;padding-top:0}.tutor-unlocked-result .result-title-row{flex-wrap:wrap;align-items:flex-start;gap:16px}.tutor-unlocked-result .result-title-row h3{font-size:clamp(23px,3vw,30px);line-height:1.2}.tutor-unlocked-result .corrected-code{max-height:none;padding:20px;font-size:14px}.tutor-unlocked-result .apply-button{width:auto;min-height:46px;margin-top:20px}.topbar{gap:20px}.playground-intro{padding:30px 0 28px}.playground-intro h1{max-width:750px;margin:10px auto 14px;line-height:1.15}.playground-intro .intro-copy{max-width:640px;font-size:15px}.intro-compact{padding:18px 0 20px}.intro-compact h1{font-size:27px}.intro-compact .intro-copy{display:none}.learning-journey{margin-bottom:24px}.learning-journey li{gap:12px;min-height:58px}.fix-panel{padding:26px}.fix-description{font-size:13px;line-height:1.7}.field-label{font-size:12px}.fix-context{margin-block:16px}.button-fix{min-height:46px;margin-top:16px}.tutor-lesson-screen{padding:clamp(22px,4vw,36px)}.tutor-lesson-screen-heading{margin-bottom:22px}.tutor-lesson-screen .error-lesson{margin-top:0}.tutor-unlocked-result .result-title-row h3{letter-spacing:-.7px;margin:0;font-weight:900}.tutor-unlocked-result .result-title-row .text-button{min-height:38px}.tutor-unlocked-result .result-summary{margin:16px 0;font-size:14px;line-height:1.7}.fix-primary-action{min-height:46px;margin-bottom:18px}.tutor-unlocked-result .explanation{margin-block:24px}.tutor-unlocked-result .explanation h4{font-size:16px;font-weight:800}.tutor-unlocked-result .explanation li{font-size:14px;line-height:1.75}.sample-notice{color:#765b2f;background:#fff5cf;border-bottom:1px solid #d8e1d2;gap:5px;padding:14px 18px;font-size:12px;line-height:1.5;display:grid}.sample-notice strong{font-weight:900}.example-picker-options .text-button{text-align:left;gap:4px;width:100%;padding:12px;display:grid}.example-picker-options .text-button strong{font-size:13px}.example-picker-options .text-button span{color:var(--muted);font-size:11px;font-weight:500}.lesson-review{border:1px solid var(--line);border-radius:14px;margin:0 0 22px;padding:12px 16px}.lesson-review summary{cursor:pointer;color:#54753a;font-size:13px;font-weight:800}.lesson-check progress{appearance:none;background:#dfe7ce;border:0;border-radius:999px;overflow:hidden}.lesson-check progress::-webkit-progress-bar{background:#dfe7ce;border-radius:999px}.lesson-check progress::-webkit-progress-value{background:#74a64a;border-radius:999px}.lesson-check progress::-moz-progress-bar{background:#74a64a;border-radius:999px}@media (max-width:780px){.playground-intro{padding-top:24px}.playground-intro h1{font-size:29px}.playground-intro .intro-copy{font-size:13px}.intro-compact h1{font-size:23px}.learning-journey li{gap:8px}.fix-panel{padding:22px}.fix-primary-action{width:100%}.tutor-unlocked-result .corrected-code{padding:16px;font-size:12px}}.fix-heading h2,.practice-home h2,.common-patterns-card h3{font-weight:900}.traceback-details{color:#d5e98c;background:#14291f;padding:12px 18px;font-size:12px}.traceback-details summary{cursor:pointer}.traceback-details pre{white-space:pre-wrap;overflow-wrap:anywhere;color:#ffb4a8;font-family:var(--font-mono);margin-top:14px;font-size:11px;line-height:1.65}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}