:root{--bg-canvas:35 30% 98.5%;--bg-surface:35 25% 95%;--bg-card:0 0% 100%;--bg-elevated:0 0% 100%;--bg-surface-1:35 25% 95%;--bg-surface-2:35 20% 91%;--bg-glow:34 65% 90%;--text-primary:218 45% 12%;--text-secondary:218 20% 34%;--text-muted:218 20% 35%;--text-on-accent:0 0% 100%;--primary:215 80% 32%;--primary-hover:215 85% 26%;--accent:34 85% 42%;--accent-hover:34 90% 36%;--accent-glow:34 85% 42%;--success:156 65% 28%;--success-bg:156 50% 94%;--warning:32 90% 42%;--warning-bg:32 60% 95%;--danger:354 75% 40%;--danger-bg:354 60% 96%;--border-subtle:35 20% 88%;--border-strong:218 30% 72%;--border-focus:215 80% 32%;--font-heading:"Instrument Serif", Georgia, serif;--font-sans:"Plus Jakarta Sans", system-ui, -apple-system, sans-serif;--font-mono:"JetBrains Mono", ui-monospace, monospace;--text-hero:clamp(2.25rem, 5vw + 1rem, 3.85rem);--text-h1:clamp(1.85rem, 3.8vw + .5rem, 2.85rem);--text-h2:clamp(1.4rem, 2.5vw + .4rem, 2.15rem);--text-h3:clamp(1.15rem, 1.6vw + .35rem, 1.5rem);--text-body:clamp(1rem, .4vw + .88rem, 1.125rem);--text-sm:.875rem;--text-xs:.75rem;--tracking-tight:0;--tracking-sans-tight:-.02em;--tracking-wide:.08em;--shadow-elevation-1:0 1px 3px 0 #111b2c0f, 0 1px 2px -1px #111b2c0a;--shadow-elevation-2:0 4px 14px -2px #111b2c14, 0 2px 6px -2px #111b2c0a;--shadow-elevation-3:0 12px 28px -4px #111b2c1a, 0 4px 10px -2px #111b2c0d;--shadow-elevation-4:0 24px 48px -8px #111b2c24, 0 8px 16px -4px #111b2c0f;--shadow-specular-inset:inset 0 1px 0 0 #ffffffa6, 0 1px 2px 0 #111b2c14;--container-max:1200px;--container-prose:760px;--container-tool:1080px;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-full:9999px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);background-color:hsl(var(--bg-canvas));color:hsl(var(--text-primary));-webkit-text-size-adjust:100%;-moz-tab-size:4;tab-size:4;scroll-behavior:smooth;font-size:16px;line-height:1.68}body{background-color:hsl(var(--bg-canvas));min-height:100vh;color:hsl(var(--text-primary));flex-direction:column;display:flex;overflow-x:hidden}.skip-link{z-index:99999;background-color:hsl(var(--primary));color:hsl(var(--text-on-accent));border-radius:var(--radius-sm);padding:.75rem 1.5rem;font-weight:700;text-decoration:none;transition:top .2s cubic-bezier(.16,1,.3,1);position:absolute;top:-100px;left:1rem}.skip-link:focus{outline:3px solid hsl(var(--accent));outline-offset:3px;top:1rem}h1,h2,h3,h4,.font-heading{font-family:var(--font-heading);color:hsl(var(--text-primary));letter-spacing:var(--tracking-tight);font-weight:400;line-height:1.22}h1{font-size:var(--text-h1);margin-bottom:1.25rem}h2{font-size:var(--text-h2);border-bottom:1px solid hsl(var(--border-subtle));margin-top:2.5rem;margin-bottom:1rem;padding-bottom:.5rem}h3{font-size:var(--text-h3);margin-top:1.75rem;margin-bottom:.75rem}p{color:hsl(var(--text-secondary));font-size:var(--text-body);margin-bottom:1.25rem}p.lead,.hero-lead{color:hsl(var(--text-primary));margin-bottom:2rem;font-size:clamp(1.125rem,1.2vw + .85rem,1.35rem);font-weight:450;line-height:1.6}.tabular-nums,input[type=number],.score-value,.metric-number{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}button,input,select,textarea,a.btn{touch-action:manipulation;min-height:48px;font-family:inherit;font-size:1rem}:focus-visible{outline:2px solid 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hsl(var(--border-subtle));flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.5rem;padding-bottom:1rem;display:flex}.eyebrow-tag{letter-spacing:.12em;text-transform:uppercase;color:hsl(var(--primary));font-size:.75rem;font-weight:700}.tool-meta-note{color:hsl(var(--text-muted));font-size:.8rem}.split-tool-stage{grid-template-columns:1.2fr 1fr;align-items:start;gap:2rem;display:grid}.tool-input-well{flex-direction:column;gap:1.15rem;display:flex}.calc-input-box{background-color:hsl(var(--bg-canvas));border:1px solid hsl(var(--border-subtle));border-radius:var(--radius-md);padding:.85rem 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hsl(var(--danger) / .3)}.scale-meter-wrap{margin:1.25rem 0}.meter-track-groove{background-color:hsl(var(--bg-surface-2));border-radius:var(--radius-full);height:10px;position:relative}.meter-fill-bar{background-color:hsl(var(--primary));border-radius:var(--radius-full);height:100%;transition:width .2s}.meter-tick{background-color:hsl(var(--text-primary));width:2px;height:16px;position:absolute;top:-3px}.meter-tick-labels{color:hsl(var(--text-muted));justify-content:space-between;margin-top:.5rem;font-size:.725rem;display:flex}.result-prose-note{color:hsl(var(--text-secondary));margin-bottom:1.25rem;font-size:.9rem;line-height:1.55}.tool-share-btn{background-color:hsl(var(--bg-card));border:1px solid hsl(var(--border-strong));border-radius:var(--radius-sm);width:100%;color:hsl(var(--text-primary));cursor:pointer;min-height:48px;padding:.75rem 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.option-btn:hover{background-color:hsl(var(--primary) / .05);border-color:hsl(var(--primary) / .4)}.quiz-choice-grid .option-letter{background-color:hsl(var(--bg-surface-2));width:28px;height:28px;color:hsl(var(--text-secondary));border-radius:50%;justify-content:center;align-items:center;font-size:.85rem;font-weight:700;display:inline-flex}@media (width<=820px){.split-tool-stage,.quiz-choice-grid{grid-template-columns:1fr}.tool-card-wrapper{padding:1.25rem}}.tactile-stepper-wrap{background-color:hsl(var(--bg-surface-2));border:1px solid hsl(var(--border-subtle));border-radius:var(--radius-sm);align-items:center;padding:2px;display:inline-flex;box-shadow:inset 0 1px 2px #111b2c0d}.stepper-btn{background-color:hsl(var(--bg-card));border:1px solid hsl(var(--border-subtle));border-radius:calc(var(--radius-sm) - 2px);width:36px;height:44px;color:hsl(var(--text-primary));cursor:pointer;transition:all var(--duration-fast) 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