.supplemental-tests-hub{--font-sans:-apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;--font-mono:'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;--color-heading:#0a0a0a;--color-subheading:#1a1a1a;--color-body:#3a3a3a;--color-body-light:#5a5a5a;--color-muted:#7a7a7a;--color-subtle:#9a9a9a;--color-accent:#b60f0a;--color-accent-hover:#8a0b07;--color-success:#047857;--color-warning:#c2410c;--color-info:#1e40af;--color-bg-page:#fff;--color-bg-subtle:#fafafa;--color-bg-card:#fff;--color-bg-highlight:#f5f5f5;--border-color:#e8e8e8;--border-light:1px solid var(--border-color);--border-medium:2px solid var(--border-color);--border-heavy:3px solid var(--color-heading);--space-xs:0.5rem;--space-sm:1rem;--space-md:1.5rem;--space-lg:2rem;--space-xl:3rem;--space-2xl:4rem;--space-3xl:6rem;--space-4xl:8rem;--radius-sm:4px;--radius-md:6px;--radius-lg:8px;--shadow-sm:0 1px 2px rgba(0, 0, 0, 0.04);--shadow-md:0 2px 8px rgba(0, 0, 0, 0.08);--shadow-lg:0 4px 16px rgba(0, 0, 0, 0.12)}.supplemental-tests-hub{background:var(--color-bg-page);min-height:100vh;padding-bottom:var(--space-4xl)}.sth-container{max-width:1140px;margin:0
auto;padding:0
var(--space-lg)}.sth-hero{text-align:center;padding:var(--space-3xl) 0 var(--space-2xl);margin-bottom:var(--space-3xl);max-width:800px;margin-left:auto;margin-right:auto}.sth-title{font-family:var(--font-sans);font-size:clamp(2.75rem, 6vw, 4rem);font-weight:800;line-height:1.1;letter-spacing:-0.03em;color:var(--color-heading);margin:0
0 var(--space-lg) 0}.sth-subtitle{font-size:clamp(1.125rem, 2.5vw, 1.375rem);font-weight:400;line-height:1.65;color:var(--color-body-light);max-width:680px;margin:0
auto var(--space-xl)}.sth-progress-card{background:var(--color-bg-subtle);border:var(--border-light);border-radius:var(--radius-lg);padding:var(--space-xl);max-width:560px;margin:0
auto var(--space-2xl)}.sth-progress-header{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:var(--space-lg)}.sth-progress-header
h3{margin:0;font-size:1.125rem;font-weight:700;letter-spacing:-0.01em;color:var(--color-heading);text-transform:uppercase}.sth-progress-count{font-size:1rem;font-weight:500;color:var(--color-muted);font-variant-numeric:tabular-nums}.sth-progress-bar-container{background:var(--color-bg-highlight);height:6px;border-radius:999px;overflow:hidden;margin-bottom:var(--space-md)}.sth-progress-bar{background:var(--color-heading);height:100%;border-radius:999px;transition:width 0.8s cubic-bezier(0.4, 0, 0.2, 1)}.sth-progress-percentage{font-size:2rem;font-weight:700;letter-spacing:-0.02em;color:var(--color-heading);text-align:center;font-variant-numeric:tabular-nums}.sth-bundle-cta{background:var(--color-bg-page);border:var(--border-heavy);border-radius:var(--radius-lg);padding:var(--space-2xl);margin:var(--space-3xl) auto;max-width:760px}.sth-bundle-content{text-align:center}.sth-bundle-header{margin-bottom:var(--space-xl)}.sth-bundle-badge{display:inline-block;background:var(--color-heading);color:#fff;padding:0.5rem 1.25rem;border-radius:var(--radius-sm);font-size:0.8125rem;font-weight:700;margin-bottom:var(--space-lg);text-transform:uppercase;letter-spacing:0.08em}.sth-bundle-title{font-size:clamp(2rem, 4.5vw, 2.75rem);font-weight:800;line-height:1.2;letter-spacing:-0.025em;color:var(--color-heading);margin:0
0 var(--space-md) 0}.sth-bundle-subtitle{font-size:1.125rem;line-height:1.6;color:var(--color-body-light);margin:0}.sth-bundle-pricing{background:var(--color-bg-subtle);border-radius:var(--radius-md);padding:var(--space-xl);margin-bottom:var(--space-xl)}.sth-price-comparison{display:flex;justify-content:center;align-items:center;gap:var(--space-2xl);margin-bottom:var(--space-lg);flex-wrap:wrap}.sth-individual-price,.sth-bundle-price{text-align:center}.sth-price-label{display:block;font-size:0.75rem;font-weight:700;color:var(--color-muted);margin-bottom:var(--space-sm);text-transform:uppercase;letter-spacing:0.1em}.sth-price-value{display:block;font-size:3rem;font-weight:800;line-height:1;letter-spacing:-0.02em;color:var(--color-heading);font-variant-numeric:tabular-nums}.sth-strikethrough{text-decoration:line-through;color:var(--color-muted);opacity:0.6}.sth-highlight{color:var(--color-accent)}.sth-savings-badge{background:var(--color-heading);color:#fff;padding:var(--space-md) var(--space-lg);border-radius:var(--radius-md);font-size:1.125rem;font-weight:700;letter-spacing:-0.01em;text-align:center}.sth-bundle-benefits{margin-bottom:var(--space-xl);text-align:left;max-width:480px;margin-left:auto;margin-right:auto}.sth-benefits-title{font-size:1rem;font-weight:700;color:var(--color-heading);margin:0
0 var(--space-md) 0;text-transform:uppercase;letter-spacing:0.05em}.sth-benefits-list{list-style:none;padding:0;margin:0}.sth-benefits-list
li{padding:var(--space-sm) 0;font-size:0.9375rem;line-height:1.6;color:var(--color-body);display:flex;align-items:flex-start;gap:var(--space-md)}.sth-benefit-icon{color:var(--color-heading);font-weight:700;flex-shrink:0;font-size:1.125rem}.sth-bundle-actions{text-align:center}.sth-guarantee{margin-top:var(--space-lg);font-size:0.875rem;color:var(--color-muted);font-style:italic}.sth-guarantee-icon{margin-right:var(--space-xs)}.sth-bundle-info-note{background:var(--color-bg-subtle);border:var(--border-light);border-radius:var(--radius-md);padding:var(--space-md);margin:var(--space-xl) auto;max-width:600px;text-align:center}.sth-bundle-info-note
p{margin:0;font-size:0.9375rem;line-height:1.6;color:var(--color-body-light)}.sth-bundle-info-note
a{color:var(--color-accent);text-decoration:none;border-bottom:1px solid transparent;transition:border-bottom-color 0.2s ease}.sth-bundle-info-note a:hover{color:var(--color-accent-hover);border-bottom-color:var(--color-accent-hover)}.sth-category-nav{position:sticky;top:80px;z-index:10;background:var(--color-bg-page);border:var(--border-light);border-radius:var(--radius-lg);padding:var(--space-md);margin-bottom:var(--space-2xl);display:flex;gap:var(--space-md);overflow-x:auto;overflow-y:hidden;white-space:nowrap;-webkit-overflow-scrolling:touch;scroll-behavior:smooth}.sth-category-nav::-webkit-scrollbar{height:4px}.sth-category-nav::-webkit-scrollbar-track{background:var(--color-bg-subtle);border-radius:2px}.sth-category-nav::-webkit-scrollbar-thumb{background:var(--color-subtle);border-radius:2px}.sth-category-nav::-webkit-scrollbar-thumb:hover{background:var(--color-muted)}.sth-category-nav-link{display:inline-block;padding:var(--space-sm) var(--space-lg);border:var(--border-medium);background:var(--color-bg-page);border-radius:var(--radius-md);font-family:var(--font-sans);font-size:0.9375rem;font-weight:600;color:var(--color-body);text-decoration:none;transition:all 0.15s ease;flex-shrink:0}.sth-category-nav-link:hover{border-color:var(--color-heading);color:var(--color-heading);background:var(--color-bg-subtle)}.sth-category-nav-link:focus{outline:2px
solid var(--color-heading);outline-offset:2px}.sth-category-nav-link.active{background:var(--color-heading);border-color:var(--color-heading);color:#fff}.sth-controls{background:var(--color-bg-page);border:var(--border-light);border-radius:var(--radius-lg);padding:var(--space-xl);margin-bottom:var(--space-3xl)}.sth-search{position:relative;margin-bottom:var(--space-lg);max-width:600px;margin-left:auto;margin-right:auto}.sth-search
input{width:100%;padding:var(--space-md) var(--space-xl) var(--space-md) var(--space-lg);font-family:var(--font-sans);font-size:1.0625rem;font-weight:400;color:var(--color-heading);border:var(--border-medium);border-radius:var(--radius-md);background:var(--color-bg-page);transition:all 0.2s ease}.sth-search input:focus{outline:none;border-color:var(--color-heading);box-shadow:var(--shadow-md)}.sth-search input::placeholder{color:var(--color-subtle)}.sth-search-icon{position:absolute;right:var(--space-lg);top:50%;transform:translateY(-50%);font-size:1.25rem;color:var(--color-subtle);pointer-events:none}.sth-filters{display:flex;gap:var(--space-md);flex-wrap:wrap;justify-content:center}.sth-filter-btn{padding:var(--space-sm) var(--space-lg);border:var(--border-medium);background:var(--color-bg-page);border-radius:var(--radius-md);font-family:var(--font-sans);font-size:0.9375rem;font-weight:600;color:var(--color-body);cursor:pointer;transition:all 0.15s ease}.sth-filter-btn:hover{border-color:var(--color-heading);color:var(--color-heading);background:var(--color-bg-subtle)}.sth-filter-btn.active{background:var(--color-heading);border-color:var(--color-heading);color:#fff;box-shadow:var(--shadow-sm)}.filter-count{display:inline-block;font-size:0.75rem;opacity:0.7;margin-left:0.25rem;font-variant-numeric:tabular-nums}.sth-filter-btn.active .filter-count{opacity:0.9}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0, 0, 0, 0);white-space:nowrap;border-width:0}.sth-category-section{margin-bottom:var(--space-4xl)}.sth-category-heading{font-size:clamp(1.5rem, 3vw, 1.875rem);font-weight:700;line-height:1.2;letter-spacing:-0.02em;color:var(--color-heading);margin:0
0 var(--space-xl) 0;padding-bottom:var(--space-md);border-bottom:var(--border-heavy);text-transform:uppercase}.sth-quiz-grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(320px, 1fr));gap:var(--space-xl)}.sth-quiz-card{background:var(--color-bg-card);border:var(--border-light);border-radius:var(--radius-lg);overflow:hidden;transition:all 0.2s ease;position:relative;display:flex;flex-direction:column}.sth-quiz-card:hover{border-color:var(--color-heading);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.sth-featured{border-color:var(--color-heading);border-width:2px}.sth-featured-badge{position:absolute;top:var(--space-lg);right:var(--space-lg);background:var(--color-heading);color:#fff;padding:0.5rem var(--space-md);border-radius:var(--radius-sm);font-size:0.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:0.1em;z-index:2}.sth-quiz-thumbnail{width:100%;height:200px;overflow:hidden;background:var(--color-bg-highlight);display:flex;align-items:center;justify-content:center;color:var(--color-subtle);font-size:3rem}.sth-quiz-thumbnail
img{width:100%;height:100%;object-fit:cover;transition:transform 0.3s ease, opacity 0.2s ease}.sth-quiz-card:hover .sth-quiz-thumbnail
img{opacity:0.95;transform:scale(1.05)}.sth-quiz-content{padding:var(--space-xl);flex:1;display:flex;flex-direction:column}.sth-quiz-name{font-size:1.375rem;font-weight:700;line-height:1.3;letter-spacing:-0.01em;color:var(--color-heading);margin:0
0 var(--space-sm) 0}.sth-badge{display:inline-flex;align-items:center;justify-content:center;padding:0.375rem 0.625rem;border-radius:var(--radius-sm);font-size:0.6875rem;font-weight:700;white-space:nowrap;line-height:1;text-transform:uppercase;letter-spacing:0.05em}.sth-badge-primary{margin-bottom:var(--space-md)}.sth-badge-completed{background:var(--color-success);color:#fff}.sth-badge-locked{background:var(--color-warning);color:#fff}.sth-badge-free{background:var(--color-info);color:#fff}.sth-badge-included{background:#28a745;color:#fff}.sth-quiz-description{font-size:1rem;line-height:1.65;color:var(--color-body-light);margin:0
0 var(--space-md) 0;flex:1}.sth-read-more{display:inline;background:none;border:none;color:var(--color-heading);font-weight:600;font-size:0.9375rem;cursor:pointer;text-decoration:underline;padding:0;margin-left:0.25rem;transition:color 0.15s ease}.sth-read-more:hover{color:var(--color-accent)}.sth-read-more:focus{outline:2px
solid var(--color-heading);outline-offset:2px}.sth-quiz-meta-simple{font-size:0.875rem;font-weight:500;color:var(--color-muted);margin-bottom:var(--space-lg);padding-top:var(--space-sm);font-variant-numeric:tabular-nums}.sth-quiz-meta{display:flex;gap:var(--space-lg);margin-bottom:var(--space-lg);padding-top:var(--space-md);border-top:var(--border-light)}.sth-meta-item{display:flex;align-items:center;gap:var(--space-sm);font-size:0.875rem;font-weight:500;color:var(--color-muted)}.sth-meta-icon{font-size:1.125rem}.sth-quiz-actions{display:flex;gap:var(--space-sm);flex-wrap:wrap}.sth-btn{display:inline-flex;align-items:center;justify-content:center;padding:var(--space-md) var(--space-xl);border:none;border-radius:var(--radius-md);font-family:var(--font-sans);font-size:1rem;font-weight:600;line-height:1;letter-spacing:-0.01em;cursor:pointer;transition:all 0.15s ease;text-decoration:none;flex:1;min-height:48px}.sth-btn-primary{background:var(--color-heading);color:#fff;border:2px
solid var(--color-heading)}.sth-btn-primary:hover{background:var(--color-subheading);border-color:var(--color-subheading);box-shadow:var(--shadow-md)}.sth-btn-secondary{background:var(--color-bg-subtle);color:var(--color-heading);border:2px
solid var(--border-color)}.sth-btn-secondary:hover{background:var(--color-bg-highlight);border-color:var(--color-heading)}.sth-btn-outline{background:transparent;color:var(--color-heading);border:2px
solid var(--color-heading)}.sth-btn-outline:hover{background:var(--color-heading);color:#fff}.sth-btn-locked{background:var(--color-warning);color:#fff;border:2px
solid var(--color-warning)}.sth-btn-locked:hover{background:#9a3412;border-color:#9a3412;box-shadow:var(--shadow-md)}.sth-btn-bundle{background:var(--color-heading);color:#fff;border:2px
solid var(--color-heading);font-size:1.125rem;padding:var(--space-lg) var(--space-2xl);font-weight:700;letter-spacing:-0.015em}.sth-btn-bundle:hover{background:var(--color-subheading);border-color:var(--color-subheading);box-shadow:var(--shadow-lg);transform:translateY(-1px)}.sth-btn-lg{font-size:1.125rem;padding:var(--space-lg) var(--space-2xl)}.sth-btn-sm{font-size:0.875rem;padding:var(--space-sm) var(--space-lg);min-height:40px}.sth-btn-icon{margin-right:var(--space-sm)}.sth-no-results{text-align:center;padding:var(--space-3xl) var(--space-lg);background:var(--color-bg-subtle);border:var(--border-light);border-radius:var(--radius-lg);margin-top:var(--space-3xl)}.sth-no-results-content
h3{font-size:1.75rem;font-weight:700;letter-spacing:-0.02em;color:var(--color-heading);margin:0
0 var(--space-md) 0}.sth-no-results-content
p{font-size:1.125rem;color:var(--color-body-light);margin:0
0 var(--space-xl) 0;line-height:1.6}.sth-coming-soon{background:var(--color-bg-subtle);border:var(--border-light);border-radius:var(--radius-lg);padding:var(--space-3xl) var(--space-2xl);margin-top:var(--space-4xl)}.sth-section-heading{font-size:clamp(1.75rem, 3vw, 2.25rem);font-weight:800;line-height:1.2;letter-spacing:-0.025em;color:var(--color-heading);margin:0
0 var(--space-md) 0;text-align:center}.sth-section-subtitle{font-size:1.125rem;line-height:1.6;color:var(--color-body-light);text-align:center;margin:0
0 var(--space-2xl) 0}.sth-coming-soon-grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(300px, 1fr));gap:var(--space-xl)}.sth-coming-soon-card{background:var(--color-bg-page);border:2px
dashed var(--border-color);border-radius:var(--radius-lg);padding:var(--space-xl);text-align:center}.sth-coming-soon-badge{display:inline-block;background:var(--color-info);color:#fff;padding:0.5rem var(--space-lg);border-radius:var(--radius-sm);font-size:0.6875rem;font-weight:700;margin-bottom:var(--space-md);text-transform:uppercase;letter-spacing:0.08em}.sth-coming-soon-name{font-size:1.375rem;font-weight:700;line-height:1.3;letter-spacing:-0.01em;color:var(--color-heading);margin:0
0 var(--space-md) 0}.sth-coming-soon-description{font-size:0.9375rem;line-height:1.6;color:var(--color-body-light);margin:0
0 var(--space-lg) 0}.sth-release-date{font-size:0.875rem;font-weight:600;color:var(--color-info);margin:0
0 var(--space-lg) 0}.sth-waitlist-form{display:flex;gap:var(--space-sm)}.sth-waitlist-email{flex:1;padding:var(--space-sm) var(--space-md);border:var(--border-medium);border-radius:var(--radius-md);font-family:var(--font-sans);font-size:0.9375rem;background:var(--color-bg-page);transition:all 0.2s ease}.sth-waitlist-email:focus{outline:none;border-color:var(--color-heading);box-shadow:var(--shadow-sm)}.sth-waitlist-message{margin-top:var(--space-md);padding:var(--space-md);border-radius:var(--radius-md);font-size:0.875rem;line-height:1.5;font-weight:500}.sth-waitlist-message.success{background:#d1fae5;color:#065f46;border:1px
solid var(--color-success)}.sth-waitlist-message.error{background:#fee2e2;color:#991b1b;border:1px
solid #dc2626}.sth-quiz-card.sth-hidden{display:none}@media (max-width: 1024px){.sth-quiz-grid{grid-template-columns:repeat(auto-fill, minmax(280px, 1fr));gap:var(--space-lg)}.sth-category-section{margin-bottom:var(--space-3xl)}}@media (max-width: 768px){.sth-container{padding:0
var(--space-md)}.sth-hero{padding:var(--space-2xl) 0 var(--space-xl);margin-bottom:var(--space-2xl)}.sth-title{font-size:clamp(2rem, 8vw, 2.75rem)}.sth-quiz-grid{grid-template-columns:1fr}.sth-controls{padding:var(--space-lg);margin-bottom:var(--space-2xl)}.sth-filters{justify-content:flex-start;gap:var(--space-sm)}.sth-filter-btn{font-size:0.875rem;padding:var(--space-sm) var(--space-md)}.sth-price-comparison{gap:var(--space-lg)}.sth-price-value{font-size:2.5rem}.sth-bundle-cta{padding:var(--space-xl)}.sth-coming-soon-grid{grid-template-columns:1fr;gap:var(--space-lg)}.sth-waitlist-form{flex-direction:column;gap:var(--space-md)}.sth-category-section{margin-bottom:var(--space-2xl)}.sth-category-heading{font-size:clamp(1.25rem, 5vw, 1.5rem)}}@media (max-width: 480px){.sth-container{padding:0
var(--space-md)}.sth-hero{padding:var(--space-xl) 0}.sth-progress-card{padding:var(--space-lg)}.sth-controls{padding:var(--space-md)}.sth-search
input{padding:var(--space-sm) var(--space-lg) var(--space-sm) var(--space-md);font-size:1rem}.sth-quiz-content{padding:var(--space-lg)}.sth-quiz-name{font-size:1.25rem}.sth-quiz-actions{flex-direction:column;gap:var(--space-md)}.sth-btn{width:100%}.sth-bundle-cta{padding:var(--space-lg)}.sth-bundle-info-note{padding:var(--space-md);margin:var(--space-lg) auto}.sth-bundle-info-note
p{font-size:0.875rem}.sth-bundle-title{font-size:clamp(1.5rem, 6vw, 2rem)}.sth-price-value{font-size:2rem}.sth-coming-soon{padding:var(--space-xl) var(--space-md)}}@media
print{.sth-hero{background:#fff;padding:1rem}.sth-filters,.sth-bundle-cta,.sth-bundle-info-note,.sth-btn{display:none}.sth-quiz-card{border:1px
solid #000;page-break-inside:avoid}}