@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-leading:initial;--tw-font-weight:initial;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-duration:initial;--tw-ease:initial}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--color-blue-300:oklch(80.9% .105 251.813);--color-blue-700:oklch(48.8% .243 264.376);--color-blue-800:oklch(42.4% .199 265.638);--color-gray-100:oklch(96.7% .003 264.542);--color-gray-200:oklch(92.8% .006 264.531);--color-gray-300:oklch(87.2% .01 258.338);--color-gray-400:oklch(70.7% .022 261.325);--color-gray-500:oklch(55.1% .027 264.364);--color-gray-600:oklch(44.6% .03 256.802);--color-gray-700:oklch(37.3% .034 259.733);--color-gray-800:oklch(27.8% .033 256.848);--color-gray-900:oklch(21% .034 264.665);--color-white:#fff;--spacing:.25rem;--text-sm:.875rem;--text-sm--line-height:calc(1.25 / .875);--font-weight-medium:500;--radius-md:.375rem;--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,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab,red,red)){::placeholder{color:color-mix(in oklab,currentcolor 50%,transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.static{position:static}.container{width:100%}@media(min-width:40rem){.container{max-width:40rem}}@media(min-width:48rem){.container{max-width:48rem}}@media(min-width:64rem){.container{max-width:64rem}}@media(min-width:80rem){.container{max-width:80rem}}@media(min-width:96rem){.container{max-width:96rem}}.-ml-px{margin-left:-1px}.block{display:block}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline-flex{display:inline-flex}.table{display:table}.h-5{height:calc(var(--spacing) * 5)}.w-5{width:calc(var(--spacing) * 5)}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.cursor-default{cursor:default}.cursor-not-allowed{cursor:not-allowed}.flex-wrap{flex-wrap:wrap}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-items-center{justify-items:center}.gap-2{gap:calc(var(--spacing) * 2)}.rounded-md{border-radius:var(--radius-md)}.rounded-l-md{border-top-left-radius:var(--radius-md);border-bottom-left-radius:var(--radius-md)}.rounded-r-md{border-top-right-radius:var(--radius-md);border-bottom-right-radius:var(--radius-md)}.border{border-style:var(--tw-border-style);border-width:1px}.border-gray-300{border-color:var(--color-gray-300)}.bg-gray-200{background-color:var(--color-gray-200)}.bg-white{background-color:var(--color-white)}.px-2{padding-inline:calc(var(--spacing) * 2)}.px-4{padding-inline:calc(var(--spacing) * 4)}.py-2{padding-block:calc(var(--spacing) * 2)}.text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}.leading-5{--tw-leading:calc(var(--spacing) * 5);line-height:calc(var(--spacing) * 5)}.font-medium{--tw-font-weight:var(--font-weight-medium);font-weight:var(--font-weight-medium)}.text-gray-500{color:var(--color-gray-500)}.text-gray-600{color:var(--color-gray-600)}.text-gray-700{color:var(--color-gray-700)}.text-gray-800{color:var(--color-gray-800)}.shadow-sm{--tw-shadow:0 1px 3px 0 var(--tw-shadow-color,#0000001a), 0 1px 2px -1px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}.ring-gray-300{--tw-ring-color:var(--color-gray-300)}.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))}.duration-150{--tw-duration:.15s;transition-duration:.15s}.ease-in-out{--tw-ease:var(--ease-in-out);transition-timing-function:var(--ease-in-out)}@media(hover:hover){.hover\:bg-gray-100:hover{background-color:var(--color-gray-100)}.hover\:text-gray-400:hover{color:var(--color-gray-400)}.hover\:text-gray-700:hover{color:var(--color-gray-700)}}.focus\:border-blue-300:focus{border-color:var(--color-blue-300)}.focus\:ring:focus{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}.focus\:outline-none:focus{--tw-outline-style:none;outline-style:none}.active\:bg-gray-100:active{background-color:var(--color-gray-100)}.active\:text-gray-500:active{color:var(--color-gray-500)}.active\:text-gray-700:active{color:var(--color-gray-700)}.active\:text-gray-800:active{color:var(--color-gray-800)}@media(min-width:40rem){.sm\:flex{display:flex}.sm\:hidden{display:none}.sm\:flex-1{flex:1}.sm\:items-center{align-items:center}.sm\:justify-between{justify-content:space-between}.sm\:gap-2{gap:calc(var(--spacing) * 2)}}.rtl\:flex-row-reverse:where(:dir(rtl),[dir=rtl],[dir=rtl] *){flex-direction:row-reverse}@media(prefers-color-scheme:dark){.dark\:border-gray-600{border-color:var(--color-gray-600)}.dark\:bg-gray-700{background-color:var(--color-gray-700)}.dark\:bg-gray-800{background-color:var(--color-gray-800)}.dark\:text-gray-200{color:var(--color-gray-200)}.dark\:text-gray-300{color:var(--color-gray-300)}.dark\:text-gray-400{color:var(--color-gray-400)}.dark\:text-gray-600{color:var(--color-gray-600)}@media(hover:hover){.dark\:hover\:bg-gray-900:hover{background-color:var(--color-gray-900)}.dark\:hover\:text-gray-200:hover{color:var(--color-gray-200)}.dark\:hover\:text-gray-300:hover{color:var(--color-gray-300)}}.dark\:focus\:border-blue-700:focus{border-color:var(--color-blue-700)}.dark\:focus\:border-blue-800:focus{border-color:var(--color-blue-800)}.dark\:active\:bg-gray-700:active{background-color:var(--color-gray-700)}.dark\:active\:text-gray-300:active{color:var(--color-gray-300)}}}:root{--ink:#16202f;--muted:#667085;--line:#d7dde8;--paper:#f7f9fc;--panel:#fff;--accent:#0f766e;--accent-2:#d94636;--code:#101828}*{box-sizing:border-box}html,body,#root{min-height:100%}body{color:var(--ink);background:var(--paper);letter-spacing:0;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.auth-page,.auth-loading{background:#eef4f7;place-items:center;min-height:100vh;padding:24px;display:grid}.auth-loading{color:var(--muted);font-weight:900}.auth-panel{border:1px solid var(--line);background:#fff;border-radius:8px;width:min(440px,100%);padding:24px;box-shadow:0 18px 50px #1018281f}.auth-brand{align-items:center;gap:12px;margin-bottom:20px;display:flex}.auth-brand strong,.auth-brand span{display:block}.auth-brand span{color:var(--muted);margin-top:3px;font-size:12px}.auth-tabs{background:#f1f5f9;border-radius:8px;grid-template-columns:1fr 1fr;gap:6px;padding:5px;display:grid}.auth-tabs button{min-height:38px;color:var(--muted);background:0 0;border:0;border-radius:6px;font-weight:900}.auth-tabs button.active{color:var(--accent);background:#fff;box-shadow:0 3px 10px #10182814}.auth-form{gap:14px;margin-top:18px;display:grid}.auth-form label{color:#344054;gap:6px;font-size:13px;font-weight:800;display:grid}.auth-form>button{background:var(--accent);color:#fff;border:0;border-radius:8px;min-height:44px;font-weight:900}.auth-error{color:#991b1b;background:#fee2e2;border-radius:7px;margin:0;padding:10px 12px;font-size:13px}button,textarea,input{font:inherit}button{cursor:pointer}.app-shell{min-height:100vh}.lesson-menu{z-index:10;width:18px;position:fixed;inset:0 auto 0 0}.edge-hint{background:var(--accent);color:#fff;border-radius:0 8px 8px 0;align-items:center;gap:6px;width:76px;height:34px;padding-left:8px;font-size:11px;font-weight:900;transition:transform .24s;display:flex;position:absolute;inset:46% auto auto 0;transform:translate(-38px)}.menu-panel{border-right:1px solid var(--line);background:#fff;width:min(360px,100vw - 24px);height:100vh;padding:20px 16px 28px;transition:transform .28s;overflow-y:auto;transform:translate(-103%);box-shadow:18px 0 60px #10182824}.lesson-menu:hover,.lesson-menu:focus-within{width:min(360px,100vw - 24px)}.lesson-menu:hover .menu-panel,.lesson-menu:focus-within .menu-panel{transform:translate(0)}.lesson-menu:hover .edge-hint,.lesson-menu:focus-within .edge-hint{transform:translate(314px)}.brand{border:1px solid var(--line);background:#f8fafc;border-radius:8px;align-items:center;gap:12px;margin-bottom:14px;padding:12px;display:flex}.brand strong,.brand span{display:block}.brand span{color:var(--muted);font-size:12px}.menu-group{margin-top:18px}.menu-group h2{color:#475467;margin:0 0 8px;font-size:12px;font-weight:900}.menu-group button{width:100%;min-height:38px;color:var(--ink);text-align:left;background:0 0;border:1px solid #0000;border-radius:8px;justify-content:space-between;align-items:center;gap:10px;margin:4px 0;padding:9px 10px;font-size:13px;font-weight:800;display:flex}.menu-group button.completed{color:#166534}.lesson-complete-icon{color:#fff;stroke-width:3px;background:#16a34a;border-radius:50%;flex:none;padding:2px}.menu-group button:hover,.menu-group button.active{color:#0f5b55;background:#e7f7f4;border-color:#9fd8d2}.workspace{padding:22px 24px 28px 38px}.topbar{justify-content:space-between;align-items:center;gap:16px;min-height:72px;margin-bottom:18px;display:flex}.kicker{color:var(--accent);margin:0 0 4px;font-size:12px;font-weight:900}.topbar h1{margin:0;font-size:clamp(26px,3vw,42px);line-height:1.1}.account-actions{align-items:center;gap:10px;display:flex}.account-actions span{color:var(--muted);font-size:13px;font-weight:800}.account-actions button{border:1px solid var(--line);color:#344054;background:#fff;border-radius:7px;min-height:36px;padding:0 12px;font-size:12px;font-weight:900}.icon-button{border:1px solid var(--line);width:42px;height:42px;color:var(--ink);background:#fff;border-radius:8px;place-items:center;display:grid}.view-tabs{border:1px solid var(--line);background:#f8fafc;border-radius:8px;flex-wrap:wrap;gap:8px;margin:0 0 16px;padding:6px;display:flex}.view-tabs button{min-height:42px;color:var(--muted);background:0 0;border:1px solid #0000;border-radius:7px;padding:0 16px;font-size:14px;font-weight:900}.view-tabs button.active{color:var(--accent);background:#fff;border-color:#9fd8d2;box-shadow:0 8px 18px #10182814}.progress-dashboard{gap:16px;display:grid}.progress-summary{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.progress-stat{border:1px solid var(--line);background:#fff;border-radius:8px;align-content:center;gap:6px;min-height:100px;padding:16px;display:grid}.progress-stat.primary{background:#ecfdf5;border-color:#86cfc5}.progress-stat span{color:var(--muted);font-size:13px;font-weight:800}.progress-stat strong{color:#1f2937;font-size:30px;line-height:1}.progress-stat.primary strong{color:#0f766e}.progress-stat small{color:var(--muted);font-size:13px}.overall-progress-panel,.progress-group-panel{padding:16px}.progress-heading,.progress-group-header,.saved-code-meta{justify-content:space-between;align-items:center;gap:12px;display:flex}.progress-heading div{align-items:center;gap:8px;font-weight:900;display:flex}.progress-heading>span,.progress-group-header span{color:var(--muted);font-size:13px;font-weight:800}.progress-track{background:#e5e7eb;border-radius:6px;height:12px;margin-top:12px;overflow:hidden}.progress-track.small{height:8px;margin-top:10px}.progress-track span{border-radius:inherit;background:#0f766e;height:100%;transition:width .25s;display:block}.progress-groups{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:16px;display:grid}.progress-group-header h2{margin:0 0 3px;font-size:16px}.progress-group-header strong{color:#0f766e;font-size:20px}.progress-lesson-list{gap:8px;margin-top:14px;display:grid}.progress-lesson-row{background:#f8fafc;border:1px solid #e5e7eb;border-radius:7px;padding:10px 12px}.progress-lesson-row.completed{background:#f0fdf4;border-color:#bbf7d0}.progress-lesson-main{align-items:center;gap:10px;display:flex}.progress-lesson-main>svg{color:#98a2b3;flex:none}.progress-lesson-row.completed .progress-lesson-main>svg{color:#16a34a}.progress-lesson-main strong,.progress-lesson-main span{display:block}.progress-lesson-main strong{font-size:14px}.progress-lesson-main span{color:var(--muted);margin-top:2px;font-size:12px}.open-lesson-button,.saved-code-meta button{color:#fff;background:#0f766e;border:0;border-radius:7px;min-height:34px;padding:0 11px;font-size:12px;font-weight:900}.progress-lesson-row>.open-lesson-button{margin-top:9px}.saved-code-details{border-top:1px solid #d1fae5;margin-top:9px;padding-top:8px}.saved-code-details summary{color:#0f766e;cursor:pointer;font-size:13px;font-weight:900}.saved-code-content{margin-top:10px}.saved-code-meta span{color:var(--muted);font-size:12px}.saved-code-content h3{color:#344054;margin:12px 0 6px;font-size:12px}.saved-code{max-height:280px;margin:0;font-size:12px}.saved-markup-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.lesson-layout.show-progress{display:none}.admin-user-list{gap:10px;display:grid}.admin-user-panel{padding:0;overflow:hidden}.admin-user-panel>summary{cursor:pointer;justify-content:space-between;align-items:center;gap:16px;padding:15px 16px;list-style:none;display:flex}.admin-user-panel>summary::-webkit-details-marker{display:none}.admin-user-panel>summary strong,.admin-user-panel>summary span{display:block}.admin-user-panel>summary span{color:var(--muted);margin-top:3px;font-size:12px}.admin-user-score{text-align:right}.admin-user-score strong{color:var(--accent);font-size:20px}.admin-user-panel>.progress-track{margin:0 16px}.admin-progress-items{gap:8px;padding:14px 16px 16px;display:grid}.admin-progress-item{background:#f8fafc;border:1px solid #e5e7eb;border-radius:7px}.admin-progress-item>summary{cursor:pointer;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:9px;padding:10px 12px;list-style:none;display:grid}.admin-progress-item>summary svg{color:#16a34a}.admin-progress-item>summary span{font-size:13px;font-weight:800}.admin-progress-item>summary small{color:var(--muted)}.admin-progress-item .saved-code-content{padding:0 12px 12px}.empty-progress{color:var(--muted);text-align:center;border:1px dashed #cbd5e1;border-radius:8px;margin:0;padding:24px}.lesson-layout{grid-template-columns:1fr;align-items:start;gap:16px;display:grid}.lesson-layout.show-coding{grid-template-columns:minmax(0,1.25fr) minmax(360px,.75fr)}.lesson-layout.show-learning .editor-grid,.lesson-layout.show-learning .coding-problem-panel,.lesson-layout.show-learning .right-column{display:none}.lesson-layout.show-learning .left-column,.lesson-layout.show-coding .left-column{grid-template-columns:1fr}.lesson-layout.show-coding .learning-panel{display:none}.left-column,.right-column{gap:16px;display:grid}.left-column{grid-template-columns:minmax(260px,.85fr) minmax(260px,1fr);align-items:stretch}.right-column{grid-template-columns:1fr}.editor-grid{grid-column:1/-1}.coding-problem-panel{background:#f8fffd;border-color:#8bd3c7;grid-column:1/-1;grid-template-columns:auto minmax(0,1fr) minmax(220px,.55fr);align-items:center;gap:12px;padding:10px 12px;display:grid}.coding-problem-panel h2{color:#344054;white-space:nowrap;align-items:center;gap:8px;margin:0;font-size:14px;display:flex}.panel{border:1px solid var(--line);background:var(--panel);border-radius:8px;box-shadow:0 10px 30px #1018280f}.problem-panel,.explanation-panel{padding:16px}.problem-panel{background:#f3fcfa;border-color:#8bd3c7}.learning-panel{background:#f8fffd;border-color:#8bd3c7;grid-column:1/-1;gap:14px;padding:16px;display:grid}.learning-block{border:1px solid var(--line);background:#fff;border-radius:8px;padding:14px}.learning-block h2{color:#344054;align-items:center;gap:8px;margin:0 0 10px;font-size:14px;display:flex}.learning-block p{margin:10px 0 0;line-height:1.75}.explanation-section+.explanation-section,.mini-example .explanation-section{margin-top:18px}.explanation-section h3{color:#1f2937;margin:0 0 8px;font-size:15px}.explanation-section p,.mini-example>p{color:#344054;font-size:15px;line-height:1.9}.quick-summary{background:#ecfdf5;border-left:4px solid #0f766e;border-radius:6px;padding:11px 13px;font-weight:800;color:#134e4a!important;margin-top:0!important}.explanation-paragraphs{margin-top:12px}.explanation-paragraphs p+p{margin-top:10px}.mini-example{margin-top:16px}.mini-example h3{color:#1f2937;margin:0 0 8px;font-size:15px}.explanation-example{max-height:none;margin-top:0}.code-reading{background:#eff6ff;border-left:4px solid #2563eb;border-radius:6px;padding:10px 12px}.code-reading p{color:#1e3a8a}.problem-text{background:#f3fcfa;border:1px solid #bfe9e2;border-radius:8px;margin:0;padding:9px 11px;font-size:14px;font-weight:800;line-height:1.55}.problem-text:before{content:none}.js-task-block ol{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:12px 0 0;padding:0;list-style:none;display:grid}.js-task-block li{color:#7c2d12;background:#fff7ed;border:1px solid #fdba74;border-radius:8px;min-height:68px;padding:12px 12px 12px 42px;font-size:13px;font-weight:800;line-height:1.45;position:relative}.js-task-block li:before{content:counter(list-item);color:#fff;background:#f97316;border-radius:999px;place-items:center;width:22px;height:22px;font-size:12px;font-weight:900;display:grid;position:absolute;top:12px;left:12px}.problem-tabs{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:12px;display:grid}.problem-tabs button{color:#0f5b55;background:#fff;border:1px solid #9fd8d2;border-radius:8px;min-height:40px;padding:10px 12px;font-size:13px;font-weight:900}.problem-tabs button.active{background:var(--accent);color:#fff}.problem-panel p,.explanation-panel p{margin:10px 0 0;line-height:1.75}.problem-panel p{background:#fff;border:1px solid #bfe9e2;border-radius:8px;padding:14px 14px 14px 42px;font-size:16px;font-weight:800;position:relative}.problem-panel p:before{content:"1";background:var(--accent);color:#fff;border-radius:999px;place-items:center;width:22px;height:22px;font-size:12px;font-weight:900;display:grid;position:absolute;top:14px;left:12px}.problem-panel:after{content:"進め方: 1. プレビューを見る  2. 問題文の対象を探す  3. コードを1か所変える  4. 下のプレビューで変化を確認する";color:#9a3412;background:#fff7ed;border-radius:8px;margin-top:12px;padding:10px 12px;font-size:13px;font-weight:800;line-height:1.55;display:block}.panel-title{color:#344054;align-items:center;gap:8px;font-size:13px;font-weight:900;display:flex}.goal{color:#05603a;background:#ecfdf3;border-radius:8px;align-items:center;gap:8px;margin-top:12px;padding:10px 12px;font-size:13px;font-weight:800;display:flex}.coding-problem-panel .goal{margin-top:0;padding:8px 10px;line-height:1.45}.js-task-panel{background:#fff7ed;border-color:#fed7aa;grid-column:1/-1;padding:16px}.js-task-panel ol{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:12px 0 0;padding:0;list-style:none;display:grid}.js-task-panel li{color:#7c2d12;background:#fff;border:1px solid #fdba74;border-radius:8px;min-height:72px;padding:12px 12px 12px 42px;font-size:13px;font-weight:800;line-height:1.45;position:relative}.js-task-panel li:before{content:counter(list-item);color:#fff;background:#ea580c;border-radius:999px;place-items:center;width:22px;height:22px;font-size:12px;font-weight:900;display:grid;position:absolute;top:12px;left:12px}.answer-tools{flex-wrap:wrap;gap:10px;margin-top:14px;display:flex}.answer-tools button{color:#fff;background:#ea580c;border:0;border-radius:8px;min-height:40px;padding:10px 14px;font-weight:900}.answer-tools .reset-code-button{justify-content:center;align-items:center;gap:7px;display:inline-flex}.answer-tools button.secondary{color:#9a3412;background:#fff;border:1px solid #fdba74}.answer-copy-note{color:#7c2d12;align-self:center;font-size:12px;font-weight:800;line-height:1.45}.check-result{border-radius:8px;margin:12px 0 0;padding:11px 12px;font-size:13px;font-weight:800;line-height:1.55}.check-result.success{color:#166534;background:#dcfce7}.check-result.warn{color:#92400e;background:#fef3c7}.check-result.error{color:#991b1b;background:#fee2e2}.answer-example{color:#eef4ff;white-space:pre-wrap;tab-size:2;background:#101828;border-radius:8px;max-height:360px;margin:12px 0 0;padding:14px;font-family:Cascadia Code,Consolas,monospace;font-size:13px;line-height:1.6;overflow:auto}.answer-examples h3{color:#344054;margin:16px 0 8px;font-size:14px}.answer-examples h3:first-child{margin-top:12px}.answer-examples .answer-example{margin-top:0}.editor-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.editor-panel{grid-template-rows:auto 1fr;gap:10px;min-height:300px;padding:12px;display:grid}.editor-panel.js-main{border-color:#f59e0b;grid-column:1/-1;min-height:560px;box-shadow:0 12px 34px #f59e0b1f}.editor-answer-panel{grid-column:1/-1;padding:12px}textarea{resize:vertical;background:var(--code);color:#eef4ff;border:1px solid #26364f;border-radius:8px;outline:0;width:100%;min-height:240px;padding:12px;font-family:Cascadia Code,Consolas,monospace;font-size:14px;line-height:1.6}.code-editor-wrap{background:var(--code);border:1px solid #26364f;border-radius:8px;min-height:240px;display:block;position:relative;overflow:hidden}.code-highlight,.code-editor-wrap textarea{white-space:pre-wrap;word-break:break-word;tab-size:2;border:0;border-radius:0;min-height:240px;margin:0;padding:12px;font-family:Cascadia Code,Consolas,monospace;font-size:14px;line-height:1.6}.code-highlight{color:#d8e6ff;pointer-events:none;position:absolute;inset:0;overflow:hidden}.code-editor-wrap textarea{z-index:1;color:#0000;caret-color:#fff;resize:vertical;background:0 0;min-width:100%;display:block;position:relative}.code-editor-wrap textarea::selection{background:#60a5fa59}.code-editor-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px #0f766e29}.tok-keyword,.tok-tag{color:#7dd3fc}.tok-string{color:#fbbf24}.tok-comment{color:#7c8da8;font-style:italic}.tok-number{color:#c4b5fd}.tok-selector,.tok-attr{color:#86efac}.tok-property{color:#93c5fd}.tok-punc{color:#e5e7eb}.editor-panel.js-main textarea,.editor-panel.js-main .code-editor-wrap,.editor-panel.js-main .code-highlight,.editor-panel.js-main .code-editor-wrap textarea{min-height:500px;font-size:15px}textarea:focus,input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #0f766e29}.preview-panel{order:1;padding:12px}iframe{border:1px solid var(--line);background:#fff;border-radius:8px;width:100%;height:min(760px,68vh);margin-top:10px}.chat-panel{order:2;padding:12px}.messages{border:1px solid var(--line);background:#f8fafc;border-radius:8px;flex-direction:column;gap:8px;height:210px;margin:10px 0;padding:10px;display:flex;overflow-y:auto}.messages p{white-space:pre-wrap;overflow-wrap:anywhere;border-radius:8px;max-width:92%;margin:0;padding:10px 12px;font-size:14px;line-height:1.7}.messages .bot{background:#e7f7f4;align-self:flex-start}.messages .user{background:#fee4dd;align-self:flex-end}.chat-form{grid-template-columns:1fr auto;gap:8px;display:grid}input{border:1px solid var(--line);border-radius:8px;outline:0;min-width:0;padding:11px 12px;font-size:14px;line-height:1.5}.chat-form button{background:var(--accent-2);color:#fff;border:0;border-radius:8px;min-width:72px;font-weight:900}@media(max-width:1180px){.lesson-layout.show-coding,.left-column,.editor-grid,.js-task-block ol,.js-task-panel ol,.problem-tabs{grid-template-columns:1fr}.editor-panel{min-height:430px}textarea{min-height:360px}.progress-groups{grid-template-columns:1fr}}@media(max-width:680px){.workspace{padding:18px 12px 24px 28px}.topbar{align-items:flex-start}.account-actions{flex-direction:column;align-items:flex-end}.coding-problem-panel{grid-template-columns:1fr;gap:8px}.progress-summary,.saved-markup-grid{grid-template-columns:1fr}.progress-stat{min-height:82px}iframe{height:440px}}@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-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-duration{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}