:root{--color-primary: #ef4444;--color-primary-dark: #dc2626;--color-secondary: #1f2937;--color-bg: #fafafa;--color-bg-alt: #ffffff;--color-text: #374151;--color-text-light: #6b7280;--color-heading: #111827;--color-border: #e5e7eb;--container-width: 1100px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--transition: all .3s ease;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-hover: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1)}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{font-family:Inter,sans-serif;color:var(--color-text);background-color:var(--color-bg);line-height:1.6;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{font-family:Outfit,sans-serif;color:var(--color-heading);line-height:1.2}a{text-decoration:none;color:inherit}img{max-width:100%;height:auto;display:block}.container{width:100%;max-width:var(--container-width);margin:0 auto;padding:0 1.5rem}.section{padding:5rem 0}.section-title{font-size:2.5rem;font-weight:800;text-align:center;margin-bottom:3rem}.section-title span{display:block;font-size:1.25rem;font-weight:600;color:var(--color-primary);margin-top:.5rem;text-transform:uppercase;letter-spacing:.05em}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.875rem 1.75rem;font-weight:600;border-radius:var(--radius-sm);transition:var(--transition);cursor:pointer;border:none;font-family:Inter,sans-serif;font-size:1rem}.btn-primary{background-color:var(--color-primary);color:#fff;box-shadow:0 4px 14px #ef444463}.btn-primary:hover{background-color:var(--color-primary-dark);transform:translateY(-2px);box-shadow:0 6px 20px #ef44443b}.btn-secondary{background-color:#fff;color:var(--color-heading);border:1px solid var(--color-border);box-shadow:var(--shadow-sm)}.btn-secondary:hover{background-color:#f9fafb;border-color:#d1d5db;transform:translateY(-2px)}.hero{position:relative;padding:8rem 0 6rem;background-color:var(--color-heading);color:#fff;overflow:hidden;text-align:center}.hero-bg-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at center,#ef444426,#111827 70%);pointer-events:none}.hero-content{position:relative;z-index:10;max-width:800px}.hero-badge{display:inline-block;padding:.5rem 1rem;background-color:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:9999px;font-size:.875rem;font-weight:500;margin-bottom:2rem;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.hero-title{font-size:3.5rem;font-weight:900;margin-bottom:1.5rem;color:#fff}.text-gradient{background:linear-gradient(to right,#f87171,#ef4444);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:1.25rem;color:#9ca3af;margin-bottom:2.5rem;max-width:700px;margin-inline:auto}.hero-subtitle strong{color:#fff}.hero-actions{display:flex;gap:1rem;justify-content:center}.problems{background-color:var(--color-bg)}.problems-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.card{background-color:var(--color-bg-alt);border-radius:var(--radius-md);padding:2rem;box-shadow:var(--shadow-sm);border:1px solid var(--color-border);transition:var(--transition)}.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#d1d5db}.card-icon{width:48px;height:48px;background-color:#fee2e2;color:var(--color-primary);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;margin-bottom:1.5rem}.card-icon svg{width:24px;height:24px}.card h3{font-size:1.25rem;margin-bottom:1rem}.card-wide{grid-column:1 / -1;max-width:800px;margin:0 auto}@media (min-width: 768px){.card-wide{grid-column:span 2}}@media (min-width: 1024px){.card-wide{grid-column:2 / 4}}.postulates{background-color:var(--color-secondary);color:#fff}.postulates .section-title{color:#fff}.postulates-wrapper{max-width:800px;margin:0 auto}.postulates-header{margin-bottom:3rem;text-align:center}.postulates-header .section-title{text-align:center}.postulates-desc{font-size:1.125rem;color:#9ca3af}.checklist{list-style:none;display:flex;flex-direction:column;gap:1.5rem}.checklist li{display:flex;gap:1.5rem;background:#ffffff0d;padding:1.5rem;border-radius:var(--radius-md);border:1px solid rgba(255,255,255,.1);transition:var(--transition)}.checklist li:hover{background:#ffffff14;transform:translate(5px)}.check-icon{flex-shrink:0;width:32px;height:32px;background-color:var(--color-primary);border-radius:50%;display:flex;align-items:center;justify-content:center}.check-icon svg{width:18px;height:18px;color:#fff}.checklist p{color:#d1d5db}.checklist strong{color:#fff;display:block;font-size:1.125rem;margin-bottom:.25rem}.interactive-vis{max-width:1000px;margin:0 auto;background:var(--color-bg-alt);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);border:1px solid var(--color-border)}.images-stack{position:relative;width:100%;aspect-ratio:16/10;background-color:#e5e7eb;overflow:hidden}.img-base,.img-overlay{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;display:block}.img-overlay{opacity:.5}.slider-container{display:flex;align-items:center;justify-content:center;gap:1.5rem;padding:1.5rem 2rem;background-color:#f9fafb;border-bottom:1px solid var(--color-border)}.slider-label{font-weight:600;font-size:1.125rem;color:var(--color-text);white-space:nowrap}.danger-label{color:var(--color-primary-dark)}.opacity-slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;max-width:400px;height:8px;background:#e5e7eb;border-radius:4px;outline:none;box-shadow:inset 0 1px 3px #0000001a}.opacity-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:32px;height:32px;border-radius:50%;background:var(--color-heading);cursor:ew-resize;border:3px solid white;box-shadow:0 2px 6px #00000040;transition:transform .1s}.opacity-slider::-webkit-slider-thumb:hover{transform:scale(1.1);background:var(--color-primary)}.opacity-slider::-moz-range-thumb{width:32px;height:32px;border-radius:50%;background:var(--color-heading);cursor:ew-resize;border:3px solid white;box-shadow:0 2px 6px #00000040;transition:transform .1s}.opacity-slider::-moz-range-thumb:hover{transform:scale(1.1);background:var(--color-primary)}.vis-descriptions{display:grid;grid-template-columns:1fr;gap:1rem;padding:2rem}@media (min-width: 768px){.vis-descriptions{grid-template-columns:1fr 1fr;gap:2rem}}.desc-box{padding:1.5rem;background-color:var(--color-bg);border-radius:var(--radius-md);border:1px solid var(--color-border)}.danger-box{background-color:#fef2f2;border-color:#fca5a5}.desc-box h3{font-size:1.25rem;margin-bottom:.5rem}.danger-box h3{color:var(--color-primary-dark)}.download-section{background-color:var(--color-bg-alt);border-top:1px solid var(--color-border)}.download-header{text-align:center;max-width:600px;margin:0 auto 3rem}.docs-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.doc-card{display:flex;align-items:center;gap:1rem;padding:1.5rem;border-radius:var(--radius-md);border:1px solid var(--color-border);background-color:var(--color-bg);transition:var(--transition)}.doc-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md);background-color:var(--color-bg-alt)}.doc-icon{width:40px;height:40px;background-color:#e5e7eb;color:var(--color-text);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:var(--transition)}.doc-card:hover .doc-icon{background-color:#fee2e2;color:var(--color-primary)}.doc-icon svg{width:20px;height:20px}.doc-info{display:flex;flex-direction:column}.doc-info strong{font-size:1rem;color:var(--color-heading);margin-bottom:.25rem}.doc-info span{font-size:.875rem;color:var(--color-text-light)}.highlight-doc{background-color:#fef2f2;border-color:#fecaca}.highlight-doc .doc-icon{background-color:var(--color-primary);color:#fff}.highlight-doc:hover{background-color:#fee2e2}footer{background-color:var(--color-heading);color:#9ca3af;padding:4rem 0 2rem;text-align:center}.footer-title{color:#fff;font-size:1.5rem;margin-bottom:1rem}.copyright{margin-top:3rem;font-size:.875rem;padding-top:2rem;border-top:1px solid rgba(255,255,255,.1)}@media (max-width: 768px){.hero-title{font-size:2.5rem}.hero-actions{flex-direction:column}.section-title{font-size:2rem}.slider-container{flex-wrap:wrap;justify-content:space-between;gap:.75rem}.slider-label{font-size:.875rem}.slider-label:nth-of-type(1){order:1}.slider-label.danger-label{order:2}.opacity-slider{order:3;flex-basis:100%}}