@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap";@layer components;@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-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}}}@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 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utilities{.mt-3{margin-top:calc(var(--spacing) * 3)}.hidden{display:none}.inline-flex{display:inline-flex}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.cursor-pointer{cursor:pointer}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}}:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#101410;--surface:#171d18;--surface-2:#202820;--surface-3:#2a342b;--ink:#edf4ee;--soft:#c9d4cb;--muted:#93a096;--line:#2e3930;--line-strong:#465449;--accent:#3fc6af;--accent-2:#8fb0ff;--editor:#080d12;--editor-line:#263244;--danger:#ff8a80;--success:#71d99f;--shadow:0 18px 42px 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#232d2814;--body-start:#f8faf7;--body-end:#eef2ef;--topbar-bg:#f8faf7f0;--panel-bg:#ffffffdb;--progress-track-bg:#dce4de;--progress-track-border:#cad5cd;--placeholder:#7a847f;--focus-ring:#2563eb3d;--active-shadow:0 1px 4px #1f292414;--row-hover:#f0f5f2;--row-active:#e5f2ee;--row-active-border:#a9d3c8;--chip-ink:#41514b;--chip-primary-ink:#075f58;--chip-primary-bg:#e1f2ee;--chip-primary-border:#a8d8ce;--accent-border:#0d665f;--accent-hover:#0b635d;--accent-shadow:0 9px 18px #0f766e29;--file-bg:#f8faf8;--drop-bg:#eef7f4;--drop-border:#86beb3;--output-bg:#101827;--output-ink:#cbd5e1;--output-muted:#a7b2c4;--output-chip-bg:#172033;--output-chip-border:#2b3651;--output-heading:#f8fafc;--output-code-bg:#0b1020;--output-code-border:#263149;--inline-code-ink:#075f58;--inline-code-bg:#e7f3f0;--inline-code-border:#c9e1dc;--pre-ink:#d8dee9;--scroll-thumb:#a9b5ad;--lesson-outline-bg:#f0f4f1;--lesson-block-bg:#fbfcfb;--lesson-rule:#ccd9d0;--compare-bg:#111a2a;--compare-border:#2f3d5c;--compare-pre-bg:#0b1020}*{box-sizing:border-box}html{background:var(--bg);max-width:100%;overflow-x:hidden}body{background:linear-gradient(180deg,var(--body-start) 0%,var(--bg) 48%,var(--body-end) 100%);min-width:320px;max-width:100%;color:var(--ink);font-feature-settings:"calt","kern","liga","ss03";letter-spacing:0;margin:0;font-family:Inter,system-ui,-apple-system,Segoe 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var(--compare-border);border-radius:8px;gap:10px;margin:0 0 12px;padding:10px;display:grid}.comparison-head{justify-content:space-between;align-items:center;gap:10px;min-width:0;display:flex}.comparison-head b{color:var(--output-heading);text-overflow:ellipsis;white-space:nowrap;font-size:13px;line-height:1.2;overflow:hidden}.compare-status{border-radius:999px;flex:none;padding:3px 7px;font-size:11px;font-weight:850;line-height:1}.compare-status.match{color:#bbf7d0;background:#16794c2e;border:1px solid #4ade8047}.compare-status.mismatch{color:#fecaca;background:#b4231833;border:1px solid #f8717152}.compare-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.compare-cell{min-width:0}.compare-cell span{color:var(--output-muted);text-transform:uppercase;letter-spacing:0;margin-bottom:5px;font-size:11px;font-weight:850;line-height:1;display:block}.compare-cell pre{min-height:48px;max-height:150px;color:var(--pre-ink);background:var(--compare-pre-bg);border:1px solid var(--output-code-border);white-space:pre-wrap;border-radius:6px;margin:0;padding:9px;font-family:JetBrains Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:11.5px;line-height:1.5;overflow:auto}.diff-row{color:var(--output-ink);background:#f8717117;border:1px solid #f8717138;border-radius:6px;gap:4px;padding:8px 9px;font-size:12px;line-height:1.35;display:grid}.diff-row b{color:#fecaca;font-size:12px}.diff-row span{overflow-wrap:anywhere}.markdown-body{color:var(--soft);overflow-wrap:anywhere;font-size:14px;line-height:1.68}.markdown-body h1,.markdown-body h2,.markdown-body h3{color:var(--ink);letter-spacing:0;margin:18px 0 9px;font-weight:750;line-height:1.22}.markdown-body h3{font-size:18px}.markdown-body p{margin:0 0 13px}.markdown-body ul,.markdown-body ol{margin:8px 0 15px;padding-left:22px}.markdown-body li{margin:5px 0}.markdown-body strong{color:var(--ink);font-weight:800}.markdown-body code{color:var(--inline-code-ink);background:var(--inline-code-bg);border:1px solid var(--inline-code-border);border-radius:5px;padding:1px 5px;font-family:JetBrains Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.94em}.markdown-body pre{color:var(--pre-ink);background:var(--editor);border:1px solid var(--editor-line);white-space:pre-wrap;border-radius:8px;margin:10px 0 16px;padding:12px;font-family:JetBrains Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:12.5px;line-height:1.58;overflow:auto}.markdown-body pre code{color:inherit;background:0 0;border:0;padding:0}.output-panel.markdown-body h1,.output-panel.markdown-body h2,.output-panel.markdown-body h3,.output-panel.markdown-body strong{color:var(--output-heading)}.output-panel.markdown-body code{color:var(--pre-ink);background:var(--output-code-bg);border-color:var(--output-code-border)}.scrollbar{scrollbar-color:var(--scroll-thumb) transparent;scrollbar-width:thin}.scrollbar::-webkit-scrollbar{width:10px;height:10px}.scrollbar::-webkit-scrollbar-thumb{background:var(--scroll-thumb);background-clip:content-box;border:3px solid #0000;border-radius:999px}.hidden{display:none!important}.cursor-pointer{cursor:pointer}.inline-flex{display:inline-flex}.mt-3{margin-top:12px}@media (width<=1180px){.topbar{position:static}.workspace-layout{grid-template-columns:1fr;padding-top:10px}.problem-nav{max-height:none;position:static}.problem-list{display:none}.mobile-problem-select{display:block}.workspace-main{grid-template-columns:1fr}.learning-panel,.work-panel{max-height:none}.learning-panel{grid-template-rows:auto auto}.content-scroll,.lesson-sections{overflow:visible}.work-panel{grid-template-rows:auto 520px auto}.output-panel{max-height:none}}@media (width<=760px){.topbar{flex-direction:column;align-items:flex-start;gap:10px;padding:11px 12px}.brand-lockup h1{font-size:19px}.brand-lockup p{font-size:11px}.progress-summary{grid-template-columns:auto auto 1fr auto;gap:7px;width:100%;font-size:11px}.topbar-actions{flex-direction:column;align-items:stretch;gap:8px;width:100%}.theme-toggle{align-self:flex-start}.progress-summary span{text-overflow:ellipsis;min-width:0;overflow:hidden}.workspace-layout{gap:10px;padding:10px 8px 16px}.problem-nav,.learning-panel,.work-panel{border-radius:8px}.nav-tools{gap:7px}.mode-toggle,.tab-row{grid-template-columns:repeat(3,minmax(0,1fr));grid-auto-flow:row}.mode-toggle button,.tab-row button{white-space:normal;line-height:1.15}.section-header{padding:14px 12px 11px}.section-header h2{font-size:21px}.content-scroll{padding:0 12px 16px}.lesson-layout{grid-template-columns:1fr}.lesson-outline{border-right:0;border-bottom:1px solid var(--line);flex-direction:row;padding:10px 12px;overflow-x:auto}.outline-title{display:none}.outline-link{white-space:nowrap;flex:none;grid-template-columns:22px minmax(0,1fr);width:auto;max-width:190px}.lesson-sections{padding:16px 14px 20px}.lesson-block{padding-left:18px}.editor-toolbar{flex-direction:column;align-items:stretch}.editor-toolbar span{white-space:normal}.run-actions{justify-content:stretch}.run-actions .btn,.run-actions .btn2{flex:1 1 0}.work-panel{grid-template-rows:auto 430px auto}.file-workspace{padding:10px}.drop-card{min-height:170px;padding:18px 12px}.output-panel{min-height:210px}.compare-grid{grid-template-columns:1fr}.markdown-body{font-size:13.5px}}@media (width<=430px){.progress-summary{grid-template-columns:auto auto}.progress-track{grid-column:1/-1;width:100%}.side-stats{gap:5px}.side-stats div{padding-inline:3px}.mode-toggle button,.tab-row button{padding-inline:4px;font-size:11px}.work-panel{grid-template-rows:auto 400px auto}.btn,.btn2{padding-inline:9px}}@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-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}