:root{--bg: #f7f8fb;--bg-elevated: #ffffff;--fg: #14181f;--fg-muted: #5b6472;--border: #e2e5eb;--border-strong: #cdd3dc;--brand: #4f46e5;--brand-hover: #4338ca;--brand-tint: #eef0fe;--success: #15803d;--success-tint: #ecfdf3;--error: #b91c1c;--error-tint: #fef2f2;--warning: #b45309;--warning-tint: #fffbeb;--code-correct: #15803d;--code-error: #dc2626;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--shadow-sm: 0 1px 2px rgba(20, 24, 31, .06);--shadow-md: 0 4px 16px rgba(20, 24, 31, .08);--font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono: ui-monospace, "JetBrains Mono", "Fira Code", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #0d1017;--bg-elevated: #161a23;--fg: #e7e9ee;--fg-muted: #96a0b0;--border: #262b36;--border-strong: #333a48;--brand: #818cf8;--brand-hover: #a5b0fb;--brand-tint: #1c1f3a;--success: #4ade80;--success-tint: #0f2418;--error: #f87171;--error-tint: #2a1414;--warning: #fbbf24;--warning-tint: #2a1f0a;--code-correct: #4ade80;--code-error: #f87171;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 8px 24px rgba(0, 0, 0, .35)}}*{box-sizing:border-box}html{-webkit-font-smoothing:antialiased}body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font-sans);font-size:15px;line-height:1.55}h1,h2,h3{font-weight:650;letter-spacing:-.01em;margin:0 0 .25rem}h1{font-size:1.75rem}h2{font-size:1.15rem}p{margin:0 0 .75rem;color:var(--fg-muted)}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}pre,code,textarea,.type-along-chunk__monaco,.type-along-chunk__reference{font-family:var(--font-mono)}main{max-width:1040px;margin:0 auto;padding:2.5rem 1.5rem 4rem}.page-header{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border)}.page-header__tagline{margin:0;color:var(--fg-muted)}.page-header__nav{display:flex;gap:.5rem}.picker-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:1.25rem;align-items:start}@media(max-width:720px){.picker-grid{grid-template-columns:1fr}}.card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:1.5rem}.card__subtitle{font-size:.875rem;margin-top:-.5rem}.auth-gate{max-width:380px;margin:0 auto;display:flex;flex-direction:column;gap:.9rem}.field-stack{display:flex;flex-direction:column;gap:.9rem}.field-row{display:flex;gap:.75rem}.field-row .field{flex:1}.field{display:flex;flex-direction:column;gap:.35rem}.field__label{font-size:.8rem;font-weight:600;color:var(--fg-muted)}input,select,textarea{font-family:inherit;font-size:.95rem;color:var(--fg);background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:.6rem .7rem;transition:border-color .15s ease,box-shadow .15s ease}select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--fg-muted) 50%),linear-gradient(135deg,var(--fg-muted) 50%,transparent 50%);background-position:calc(100% - 18px) center,calc(100% - 13px) center;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:2rem}input:disabled,select:disabled,textarea:disabled{opacity:.6;cursor:not-allowed}input:focus-visible,select:focus-visible,textarea:focus-visible{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-tint)}.form-error{color:var(--error);background:var(--error-tint);border-radius:var(--radius-sm);padding:.5rem .7rem;font-size:.875rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:inherit;font-size:.9rem;font-weight:600;padding:.65rem 1.1rem;border-radius:var(--radius-sm);border:1px solid transparent;cursor:pointer;transition:background-color .15s ease,border-color .15s ease,transform .05s ease}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.65;cursor:not-allowed}.btn--primary{background:var(--brand);color:#fff}.btn--primary:hover:not(:disabled){background:var(--brand-hover)}.btn--ghost{background:transparent;color:var(--fg);border-color:var(--border-strong)}.btn--ghost:hover:not(:disabled){border-color:var(--brand);color:var(--brand)}.btn--block{width:100%}.spinner{width:14px;height:14px;border-radius:50%;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.generating{margin-top:1rem;padding:.9rem 1rem;background:var(--brand-tint);border-radius:var(--radius-md)}.generating__bar{height:6px;border-radius:999px;background:#4f46e526;overflow:hidden}.generating__bar-fill{height:100%;width:40%;border-radius:999px;background:var(--brand);animation:generating-slide 1.1s ease-in-out infinite}@keyframes generating-slide{0%{transform:translate(-100%)}to{transform:translate(340%)}}.generating__label{margin:.6rem 0 0;font-size:.85rem;color:var(--brand);font-weight:600}.badge{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.03em;padding:.2rem .5rem;border-radius:999px;white-space:nowrap}.badge--code{background:var(--brand-tint);color:var(--brand)}.badge--scripting{background:var(--warning-tint);color:var(--warning)}.badge--theory{background:var(--success-tint);color:var(--success)}.topic-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}.topic-list__link{display:flex;align-items:center;justify-content:space-between;gap:.75rem;width:100%;padding:.7rem .85rem;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-elevated);color:var(--fg);font:inherit;text-align:left;text-decoration:none;cursor:pointer;transition:border-color .15s ease,background-color .15s ease}.topic-list__link:hover:not(:disabled){border-color:var(--brand);background:var(--brand-tint);text-decoration:none}.topic-list__link:disabled{opacity:.6;cursor:not-allowed}.topic-list__title{display:inline-flex;align-items:center;gap:.45rem;font-weight:550}.empty-state{font-size:.875rem;font-style:italic}.type-along-chunk{display:flex;flex-direction:column;gap:0;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-elevated);box-shadow:var(--shadow-sm)}.type-along-chunk__meta{display:flex;justify-content:space-between;align-items:center;padding:.75rem 1.1rem;background:var(--bg);border-bottom:1px solid var(--border);font-size:.8rem;font-weight:600;color:var(--fg-muted)}.type-along-chunk__timer{display:inline-flex;align-items:center;gap:.4rem;font-variant-numeric:tabular-nums;padding:.15rem .6rem;border-radius:999px;background:var(--success-tint);color:var(--success)}.type-along-chunk__timer--low{background:var(--error-tint);color:var(--error)}.type-along-chunk__reference{white-space:pre-wrap;padding:1rem 1.1rem;margin:0;background:var(--bg);border-bottom:1px solid var(--border);font-size:.9rem;color:var(--fg-muted)}.type-along-chunk__monaco{height:220px}.type-along-chunk__plain-input{width:100%;min-height:140px;padding:1rem 1.1rem;border:none;border-radius:0;background:var(--bg-elevated);color:var(--fg);resize:vertical;font-size:.95rem}.type-along-chunk__plain-input:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--brand-tint)}.type-along-chunk__plain-feedback{white-space:pre-wrap;padding:.75rem 1.1rem 1rem;color:var(--fg-muted)}.typealong-correct{color:var(--code-correct)}.typealong-error{color:var(--code-error);text-decoration:underline wavy var(--code-error)}.output-window{border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem 1.4rem;background:var(--bg-elevated);box-shadow:var(--shadow-sm)}.output-window__status--error{color:var(--error)}.output-window__tests{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.6rem}.output-window__test--pass,.output-window__test--fail{border-radius:var(--radius-sm);padding:.6rem .75rem}.output-window__test--pass{background:var(--success-tint);border-left:3px solid var(--success)}.output-window__test--fail{background:var(--error-tint);border-left:3px solid var(--error)}.output-window__test-detail{display:flex;flex-direction:column;color:var(--fg-muted);font-size:.85rem;margin-top:.25rem;font-family:var(--font-mono)}.output-window--semantic-diff{display:grid;grid-template-columns:1fr 1fr;gap:1.75rem}@media(max-width:720px){.output-window--semantic-diff{grid-template-columns:1fr}}.output-window__score{font-weight:700;color:var(--fg)}.output-window__claims ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.6rem}.output-window__claim--present,.output-window__claim--distorted,.output-window__claim--missing{border-radius:var(--radius-sm);padding:.6rem .75rem}.output-window__claim--present{background:var(--success-tint);border-left:3px solid var(--success)}.output-window__claim--distorted{background:var(--warning-tint);border-left:3px solid var(--warning)}.output-window__claim--missing{background:var(--error-tint);border-left:3px solid var(--error)}.output-window__claim-status{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.03em}.output-window__claim-explanation{color:var(--fg-muted);font-size:.875rem;margin:.25rem 0 0}.iteration-compare{display:flex;gap:1rem;flex-wrap:wrap;margin:1rem 0 1.5rem}.iteration-compare__stat{flex:1;min-width:140px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md);padding:.85rem 1rem}.iteration-compare__label{font-size:.75rem;color:var(--fg-muted);font-weight:600;text-transform:uppercase;letter-spacing:.03em}.iteration-compare__value{font-size:1.4rem;font-weight:700;margin-top:.15rem}.iteration-compare__delta{font-size:.8rem;font-weight:600;margin-top:.15rem}.iteration-compare__delta--good{color:var(--success)}.iteration-compare__delta--bad{color:var(--error)}.iteration-compare__delta--neutral{color:var(--fg-muted)}.growth-curve-chart{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem 1.4rem;box-shadow:var(--shadow-sm)}.growth-curve-chart__legend{display:flex;gap:1rem;font-size:.8rem;color:var(--fg-muted);margin-bottom:.5rem;flex-wrap:wrap}.growth-curve-chart__legend-item{display:inline-flex;align-items:center;gap:.35rem}.growth-curve-chart__swatch{width:10px;height:10px;border-radius:2px;display:inline-block}.growth-curve-chart__series-label{font-size:.8rem;color:var(--fg-muted);margin:.75rem 0 .25rem}.market-match-report__role{border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.1rem 1.3rem;margin-bottom:1rem;background:var(--bg-elevated);box-shadow:var(--shadow-sm)}.market-match-report__role header{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}.market-match-report__role header h3{margin:0}.market-match-report__percent{font-weight:700;color:var(--brand)}.market-match-report__trend{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.03em;color:var(--fg-muted);background:var(--bg);padding:.15rem .5rem;border-radius:999px}.market-match-report__summary{font-size:.9rem}.market-match-report__gaps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.35rem;font-size:.85rem}.market-match-report__gaps li{display:flex;justify-content:space-between;gap:.5rem;color:var(--fg-muted)}.section-heading{margin-top:2rem}