:root{--pe-teal:#39c6c0;--pe-teal-dark:#227773;--pe-teal-light:#f7fdfc;--pe-blue:#2c6496;--pe-blue-light:#d8e6f3;--pe-blue-dark:#17354f;--pe-teal-600:#227773;--pe-teal-500:#39c6c0;--pe-teal-400:#5dd4cf;--pe-teal-300:#85e0dc;--pe-teal-200:#b0ece9;--pe-teal-100:#d7f6f4;--pe-teal-50:#f7fdfc;--pe-gray-900:#1a202c;--pe-gray-800:#2d3748;--pe-gray-700:#344054;--pe-gray-600:#616161;--pe-gray-500:#5a6578;--pe-gray-400:#6b7280;--pe-gray-300:#9ca3af;--pe-gray-200:#e2e8f0;--pe-gray-100:#f7fafc;--pe-gray-50:#f9fafb;--pe-success:#22c55e;--pe-error:#ef4444;--pe-warning:#f59e0b;--font-body:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--space-1:0.25rem;--space-2:0.5rem;--space-3:0.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--space-20:5rem;--space-24:6rem;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a,0 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1}.section{animation:sectionFadeIn .6s ease-out;margin:0 auto;max-width:1200px;padding:var(--space-24) var(--space-12);width:100%}.section-alt{background:linear-gradient(180deg,var(--pe-gray-50) 0,#fff 100%)}.section h2{color:var(--pe-teal-dark);font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;letter-spacing:-.03em;margin-bottom:var(--space-8);text-align:center}.section h3{color:var(--pe-gray-800);font-size:clamp(1.25rem,3vw,1.5rem);font-weight:600;margin-bottom:var(--space-4);margin-top:var(--space-8)}.card{background:#fff;border:1px solid var(--pe-gray-200);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);margin-bottom:var(--space-6);padding:var(--space-8);position:relative;transition:transform var(--transition-slow),box-shadow var(--transition-slow),border-color var(--transition-base)}.card:before{background:linear-gradient(135deg,#0000 0,var(--pe-teal-300) 50%,#0000 100%);border-radius:var(--radius-lg);content:"";inset:0;-webkit-mask:linear-gradient(#fff 0 0) 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h3{font-size:1.25rem}.grid{gap:var(--space-6);grid-template-columns:1fr}.card{padding:var(--space-6)}.card h3{font-size:1.15rem}.card p{font-size:.95rem}.card-interactive{padding:var(--space-5)}}@media (max-width:480px){.section{padding:var(--space-10) var(--space-4)}.section h2{font-size:1.35rem}.section h3{font-size:1.1rem}.card{padding:var(--space-5)}.card p,.card ul{font-size:.9rem}}.dive-deeper-section{margin:0 auto;max-width:800px;padding:var(--space-16) var(--space-8);text-align:center}.dive-deeper-section h2{color:var(--pe-gray-900);font-size:clamp(1.75rem,4vw,2.25rem);font-weight:700;letter-spacing:-.03em;margin-bottom:var(--space-4)}.dive-deeper-section>p{color:var(--pe-gray-500);font-size:1.1rem;line-height:1.6;margin-bottom:var(--space-8)}.dive-deeper-links{display:flex;flex-wrap:wrap;gap:var(--space-4);justify-content:center}.dive-deeper-links .cta-button{min-width:200px;text-decoration:none}@media (max-width:768px){.dive-deeper-section{padding:var(--space-12) var(--space-5)}.dive-deeper-links{align-items:center;flex-direction:column}}.hero{align-items:center;background:linear-gradient(180deg,#fff 0,var(--pe-teal-light) 100%);display:flex;flex-direction:column;justify-content:center;min-height:80vh;overflow:hidden;padding:var(--space-24) var(--space-8) var(--space-16);position:relative}.hero-content{max-width:900px;position:relative;text-align:center;z-index:1}.hero h1{animation:heroFadeUp .8s cubic-bezier(.16,1,.3,1) forwards;color:var(--pe-gray-900);font-size:clamp(2.25rem,6vw,3.5rem);font-weight:800;letter-spacing:-.04em;line-height:1.1;margin-bottom:var(--space-6);opacity:0;transform:translateY(40px)}.hero h1 .highlight{color:var(--pe-teal-dark)}.hero-subtitle{animation:heroFadeUp .8s cubic-bezier(.16,1,.3,1) .15s 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#39c6c04d;color:#fff}.cta-button.primary:hover{background:var(--pe-teal-dark);border-color:var(--pe-teal-dark);box-shadow:0 8px 30px #39c6c066;color:#fff;transform:translateY(-2px)}.cta-button.outline{background:#fff;border:2px solid var(--pe-blue);color:var(--pe-blue)}.cta-button.outline:hover{background:var(--pe-blue);box-shadow:0 4px 20px #2c649640;color:#fff;transform:translateY(-2px)}.hero-stats{grid-gap:var(--space-6);animation:heroFadeUp .8s cubic-bezier(.16,1,.3,1) .45s forwards;display:grid;gap:var(--space-6);grid-template-columns:repeat(3,1fr);max-width:900px;opacity:0;transform:translateY(30px);width:100%}a.stat-box{background:#fff;border:1px solid var(--pe-gray-200);border-left:4px solid var(--pe-teal);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);color:inherit;display:block;padding:var(--space-6);text-align:left;text-decoration:none;transition:all var(--transition-base)}.stat-box:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.stat-value{color:var(--pe-gray-900);font-size:2rem;font-weight:800;letter-spacing:-.03em;line-height:1}.stat-label,.stat-value{margin-bottom:var(--space-2)}.stat-label{color:var(--pe-gray-600);font-size:.9rem;line-height:1.4}.stat-source{color:var(--pe-teal-600);font-size:.75rem;font-weight:500;transition:color var(--transition-fast)}a.stat-box:hover .stat-source{color:var(--pe-teal-500)}@media (max-width:768px){.hero{min-height:auto;padding:var(--space-16) var(--space-5) var(--space-12)}.hero h1{font-size:2rem;line-height:1.2}.hero-subtitle{font-size:1.05rem;line-height:1.5;padding:0 var(--space-2)}.hero-cta{flex-direction:column;gap:var(--space-3);margin-bottom:var(--space-10)}.cta-button{font-size:.95rem;max-width:300px;padding:var(--space-3) var(--space-6);width:100%}.hero-stats{gap:var(--space-4);grid-template-columns:1fr;max-width:400px}.stat-value{font-size:1.75rem}}@media (max-width:480px){.hero{padding:var(--space-12) var(--space-4) var(--space-10)}.hero h1{font-size:1.75rem}.hero-subtitle{font-size:.95rem}.hero-cta{gap:var(--space-3)}.cta-button{padding:var(--space-3) var(--space-5)}.stat-box{padding:var(--space-5)}.stat-value{font-size:1.5rem}}.challenge-section{margin:0 auto;max-width:1200px;padding:var(--space-24) var(--space-8);position:relative}.challenge-section .section-header{margin-bottom:var(--space-16);text-align:center}.challenge-section .eyebrow{background:var(--pe-teal-50);border:1px solid var(--pe-teal-200);border-radius:var(--radius-full);color:var(--pe-teal-600);display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.1em;margin-bottom:var(--space-3);padding:var(--space-1) var(--space-4);text-transform:uppercase}.challenge-section .section-header h2{color:var(--pe-gray-900);font-size:clamp(2rem,5vw,2.75rem);font-weight:700;letter-spacing:-.03em;margin-bottom:var(--space-4)}.challenge-section .section-intro{color:var(--pe-gray-500);font-size:clamp(1rem,2.5vw,1.15rem);line-height:1.7;margin:0 auto;max-width:800px}.challenge-cards{grid-gap:var(--space-8);display:grid;gap:var(--space-8);grid-template-columns:repeat(3,1fr);margin-bottom:var(--space-12)}.mechanism-card{background:#fff;border:1px solid var(--pe-gray-200);border-radius:var(--radius-xl);overflow:hidden;padding:var(--space-10) var(--space-8);position:relative;transition:all var(--transition-slow)}.mechanism-card:before{background:linear-gradient(90deg,var(--pe-teal-500),var(--pe-teal-300));content:"";height:4px;left:0;position:absolute;right:0;top:0;transform:scaleX(0);transform-origin:left;transition:transform var(--transition-slow)}.mechanism-card:hover{border-color:var(--pe-teal-300);box-shadow:var(--shadow-teal-lg);transform:translateY(-8px)}.mechanism-card:hover:before{transform:scaleX(1)}.mechanism-icon{align-items:center;background:var(--pe-teal-50);border-radius:var(--radius-lg);color:var(--pe-teal-600);display:flex;height:56px;justify-content:center;margin-bottom:var(--space-5);transition:all var(--transition-spring);width:56px}.mechanism-card:hover .mechanism-icon{background:var(--pe-teal-100);transform:scale(1.1)}.mechanism-card h3{color:var(--pe-gray-800);font-size:1.25rem;font-weight:600;letter-spacing:-.01em;margin-bottom:var(--space-3)}.mechanism-card p{color:var(--pe-gray-500);font-size:.95rem;line-height:1.7;margin:0}.inline-source{border-bottom:1px dotted var(--pe-teal-400);color:var(--pe-teal-600);font-weight:500;text-decoration:none;transition:all var(--transition-fast)}.inline-source:hover{border-bottom-style:solid;color:var(--pe-teal-500)}.challenge-callout{background:var(--pe-teal-50);border:1px solid var(--pe-teal-200);border-radius:var(--radius-xl);overflow:hidden;padding:var(--space-8) var(--space-10);position:relative}.challenge-callout:before{background:linear-gradient(180deg,var(--pe-teal-500),var(--pe-teal-300));border-radius:var(--radius-full);bottom:0;content:"";left:0;position:absolute;top:0;width:4px}.challenge-callout p{color:var(--pe-gray-700);font-size:1.05rem;font-style:italic;line-height:1.7;margin:0}@media (max-width:1024px){.challenge-cards{gap:var(--space-6);grid-template-columns:1fr}}@media (max-width:768px){.challenge-section{padding:var(--space-12) var(--space-5)}.challenge-section .section-header h2{font-size:1.75rem}.challenge-section .section-intro{font-size:1rem;padding:0 var(--space-2)}.mechanism-card{padding:var(--space-8) var(--space-6)}.mechanism-icon{height:48px;width:48px}.mechanism-icon svg{height:24px;width:24px}.mechanism-card h3{font-size:1.15rem}.mechanism-card p{font-size:.9rem}.challenge-callout{padding:var(--space-6) var(--space-8)}.challenge-callout p{font-size:.95rem}}@media (max-width:480px){.challenge-section{padding:var(--space-10) var(--space-4)}.challenge-section .section-header h2{font-size:1.5rem}.mechanism-card{padding:var(--space-6) var(--space-5)}.mechanism-card h3{font-size:1.05rem}.mechanism-card p{font-size:.85rem}.challenge-callout{padding:var(--space-5) var(--space-6)}.challenge-callout p{font-size:.9rem}}.approach-section{margin:0 auto;max-width:1200px;padding:var(--space-24) var(--space-8);position:relative}.approach-section .section-header{margin-bottom:var(--space-16);text-align:center}.approach-section .eyebrow{background:var(--pe-teal-50);border:1px solid var(--pe-teal-200);border-radius:var(--radius-full);color:var(--pe-teal-600);display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.1em;margin-bottom:var(--space-3);padding:var(--space-1) var(--space-4);text-transform:uppercase}.approach-section .section-header h2{color:var(--pe-gray-900);font-size:clamp(2rem,5vw,2.75rem);font-weight:700;letter-spacing:-.03em;margin-bottom:var(--space-4)}.approach-pipeline{grid-gap:var(--space-2);align-items:stretch;display:grid;gap:var(--space-2);grid-template-columns:repeat(4,1fr);margin-bottom:var(--space-16)}.pipeline-step{background:#fff;border:2px solid var(--pe-teal-200);border-radius:var(--radius-xl);padding:var(--space-8) var(--space-6);position:relative;text-align:center;transition:all var(--transition-slow)}.pipeline-step:hover{border-color:var(--pe-teal-500);box-shadow:var(--shadow-teal);transform:translateY(-4px)}.pipeline-number{align-items:center;background:linear-gradient(135deg,var(--pe-teal-500),var(--pe-teal-600));border-radius:var(--radius-md);box-shadow:0 4px 12px #39c6c04d;color:#fff;display:inline-flex;font-size:.9rem;font-weight:700;height:36px;justify-content:center;margin-bottom:var(--space-4);width:36px}.pipeline-step h3{color:var(--pe-gray-800);font-size:1.1rem;font-weight:600;letter-spacing:-.01em;margin-bottom:var(--space-2)}.pipeline-step p{color:var(--pe-gray-500);font-size:.85rem;line-height:1.6;margin:0}.pipeline-arrow{align-items:center;color:var(--pe-teal-500);display:flex;flex-shrink:0;font-size:1.5rem;font-weight:600;justify-content:center}.approach-description{background:linear-gradient(135deg,var(--pe-teal-50) 0,#f0f9ff80 100%);border-radius:var(--radius-2xl);color:var(--pe-gray-600);font-size:1.05rem;line-height:1.7;margin:0 auto var(--space-16);max-width:900px;padding:var(--space-8);position:relative;text-align:center}.approach-description p{margin:0;position:relative;z-index:1}.capability-grid{grid-gap:var(--space-8);display:grid;gap:var(--space-8);grid-template-columns:repeat(3,1fr)}.capability-card{border:1px solid var(--pe-gray-200);border-radius:var(--radius-xl);overflow:hidden;padding:var(--space-8);position:relative;transition:all var(--transition-slow)}.capability-card:after{background:linear-gradient(90deg,var(--pe-teal-500),var(--pe-teal-300));bottom:0;content:"";height:3px;left:0;position:absolute;right:0;transform:scaleX(0);transform-origin:left;transition:transform var(--transition-slow)}.capability-card:hover{border-color:var(--pe-teal-300);box-shadow:var(--shadow-lg);transform:translateY(-6px)}.capability-card:hover:after{transform:scaleX(1)}.capability-card h3{color:var(--pe-gray-800);font-size:1.15rem;font-weight:600;letter-spacing:-.01em;margin-bottom:var(--space-3)}.capability-card p{color:var(--pe-gray-500);line-height:1.7;margin:0}.uncertainty-box{background:linear-gradient(135deg,var(--pe-teal-50) 0,#f0f9ff80 100%);border:1px solid var(--pe-teal-200);border-radius:var(--radius-2xl);margin-top:var(--space-16);padding:var(--space-8);text-align:center}.uncertainty-box h3{color:var(--pe-gray-800);font-size:1.25rem;font-weight:600;margin-bottom:var(--space-3)}.uncertainty-box>p{color:var(--pe-gray-600);font-size:.95rem;line-height:1.7;margin:0 auto var(--space-8);max-width:700px}.uncertainty-stats{display:flex;flex-wrap:wrap;gap:var(--space-10);justify-content:center}.uncertainty-stat{text-align:center}.uncertainty-value{color:var(--pe-teal-600);font-size:1.5rem;font-weight:700;letter-spacing:-.02em}.uncertainty-label{color:var(--pe-gray-500);font-size:.85rem;margin-top:var(--space-1)}@media 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