@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Playfair+Display:ital,wght@0,600;0,700;0,800;1,600&display=swap";:root{--font-body: "Inter", system-ui, -apple-system, sans-serif;--font-heading: "Playfair Display", Georgia, serif;--color-bg: #FDFBF7;--color-surface: #FFFFFF;--color-surface-hover: #F8F6F1;--color-text: #111111;--color-text-secondary: #555555;--color-text-muted: #888888;--color-border: #E0DDD6;--color-border-light: #EFECE5;--color-primary: #0D7A70;--color-primary-light: #E0F2F1;--color-longevity: #0D7A70;--color-weight-loss: #C2410C;--color-strength-training: #B91C1C;--color-endurance-training: #1D4ED8;--color-nutrition: #15803D;--color-supplements: #7E22CE;--color-brain-health: #4338CA;--color-sleep: #4F46E5;--color-gut-health: #B45309;--color-longevity-light: #F0FDFA;--color-weight-loss-light: #FFF7ED;--color-strength-training-light: #FEF2F2;--color-endurance-training-light: #EFF6FF;--color-nutrition-light: #F0FDF4;--color-supplements-light: #FAF5FF;--color-brain-health-light: #EEF2FF;--color-sleep-light: #EEF2FF;--color-gut-health-light: #FFFBEB;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--max-width: 1200px;--nav-height: 72px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px -2px rgba(0, 0, 0, .05);--shadow-lg: 0 12px 24px -4px rgba(0, 0, 0, .06);--transition-fast: .15s ease;--transition-base: .25s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);color:var(--color-text);background-color:var(--color-bg);line-height:1.7;min-height:100vh}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);line-height:1.25;color:var(--color-text);letter-spacing:-.01em}h1{font-size:2.75rem;font-weight:700}h2{font-size:2.25rem;font-weight:700}h3{font-size:1.5rem;font-weight:600}h4{font-size:1.2rem;font-weight:600}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-text)}img{max-width:100%;height:auto;display:block}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--space-lg)}.page-content{padding:var(--space-2xl) 0 var(--space-3xl)}.nav{position:sticky;top:0;z-index:100;background:#ffffffeb;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border-light);height:var(--nav-height)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%}.nav-logo{font-family:var(--font-heading);font-size:1.75rem;font-weight:800;font-style:italic;color:var(--color-primary);text-decoration:none;display:flex;align-items:baseline;gap:2px;letter-spacing:-.02em}.nav-logo:hover{color:var(--color-text)}.nav-logo-dot{display:inline-block;width:6px;height:6px;background:var(--color-text);border-radius:50%;margin-right:2px}.nav-links{display:flex;align-items:center;gap:var(--space-xs);list-style:none}.nav-link{font-size:.875rem;font-weight:500;color:var(--color-text-secondary);padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-sm);white-space:nowrap;transition:all var(--transition-fast)}.nav-link:hover{color:var(--color-text);background:var(--color-surface-hover)}.nav-link.active{color:var(--color-primary);background:var(--color-primary-light)}.nav-dropdown-wrapper{position:relative}.nav-dropdown-trigger{display:inline-flex;align-items:center;gap:4px;background:none;border:none;cursor:pointer;font-family:inherit}.nav-dropdown-chevron{transition:transform var(--transition-fast)}.nav-dropdown-trigger[aria-expanded=true] .nav-dropdown-chevron{transform:rotate(180deg)}.nav-dropdown{display:none;position:absolute;top:calc(100% + 8px);left:50%;transform:translate(-50%);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:var(--space-sm);min-width:220px;list-style:none;z-index:200}.nav-dropdown:before{content:"";position:absolute;top:-10px;left:0;right:0;height:10px}@media(min-width:769px){.nav-dropdown-wrapper:hover .nav-dropdown,.nav-dropdown-wrapper:focus-within .nav-dropdown{display:block;animation:dropdown-fade .15s ease}.nav-dropdown-wrapper:hover .nav-dropdown-chevron,.nav-dropdown-wrapper:focus-within .nav-dropdown-chevron{transform:rotate(180deg)}}.nav-dropdown.open{display:block;animation:dropdown-fade .15s ease}@keyframes dropdown-fade{0%{opacity:0;transform:translate(-50%) translateY(-4px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.nav-dropdown-link{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-sm);color:var(--color-text-secondary);font-size:.875rem;font-weight:500;transition:all var(--transition-fast);text-decoration:none}.nav-dropdown-link:hover{background:var(--color-surface-hover);color:var(--color-text)}.nav-dropdown-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:var(--space-sm);color:var(--color-text)}.nav-toggle svg{width:24px;height:24px}.study-card{background:var(--color-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-md);padding:var(--space-lg);transition:all var(--transition-base);display:flex;flex-direction:column;gap:var(--space-sm)}.study-card:hover{border-color:var(--color-border);box-shadow:var(--shadow-md);transform:translateY(-2px)}.study-card-meta{display:flex;align-items:center;gap:var(--space-sm);font-size:.8rem;color:var(--color-text-muted)}.study-card-title{font-size:1.05rem;font-weight:600;line-height:1.4;color:var(--color-text)}.study-card-title a{color:inherit;text-decoration:none}.study-card-title a:hover{color:var(--color-primary)}.study-card-summary{font-size:.95rem;color:var(--color-text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.study-card-footer{margin-top:auto;padding-top:var(--space-sm);display:flex;align-items:center;justify-content:space-between}.study-card-journal{font-size:.8rem;color:var(--color-text-muted);font-style:italic}.study-card-arrow{color:var(--color-primary);font-size:.875rem;font-weight:500;display:flex;align-items:center;gap:4px;transition:gap var(--transition-fast)}.study-card:hover .study-card-arrow{gap:8px}.category-badge{display:inline-flex;align-items:center;padding:2px 10px;border-radius:100px;font-size:.75rem;font-weight:600;text-transform:capitalize;letter-spacing:.01em;white-space:nowrap;transition:opacity var(--transition-fast)}.category-badge:hover{opacity:.85}.category-badge[data-category=longevity]{background:var(--color-longevity-light);color:var(--color-longevity)}.category-badge[data-category=weight-loss]{background:var(--color-weight-loss-light);color:var(--color-weight-loss)}.category-badge[data-category=strength-training]{background:var(--color-strength-training-light);color:var(--color-strength-training)}.category-badge[data-category=endurance-training]{background:var(--color-endurance-training-light);color:var(--color-endurance-training)}.category-badge[data-category=nutrition]{background:var(--color-nutrition-light);color:var(--color-nutrition)}.category-badge[data-category=supplements]{background:var(--color-supplements-light);color:var(--color-supplements)}.category-badge[data-category=brain-health]{background:var(--color-brain-health-light);color:var(--color-brain-health)}.category-badge[data-category=sleep]{background:var(--color-sleep-light);color:var(--color-sleep)}.category-badge[data-category=gut-health]{background:var(--color-gut-health-light);color:var(--color-gut-health)}.study-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:var(--space-lg)}.section-header{margin-bottom:var(--space-xl)}.section-header h2{margin-bottom:var(--space-xs)}.section-header p{color:var(--color-text-secondary);font-size:1rem}.hero{text-align:center;padding:var(--space-3xl) 0 var(--space-2xl);max-width:800px;margin:0 auto}.hero h1{font-size:3.5rem;font-weight:800;margin-bottom:var(--space-md);color:var(--color-text);line-height:1.1}.hero-subtitle{font-size:1.25rem;color:var(--color-text-secondary);line-height:1.6}.category-grid-large{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-lg)}.category-square{display:flex;flex-direction:column;padding:var(--space-xl);border-radius:var(--radius-md);background:var(--color-surface);border:1px solid var(--color-border-light);text-decoration:none;color:var(--color-text);transition:all var(--transition-base);position:relative;overflow:hidden}.category-square:hover{border-color:var(--cat-color, var(--color-border));box-shadow:var(--shadow-md);transform:translateY(-4px)}.category-square-icon{width:40px;height:40px;margin-bottom:var(--space-md);color:var(--cat-color)}.category-square-icon svg{width:100%;height:100%}.category-square-title{font-size:1.35rem;font-weight:700;color:var(--color-text);margin-bottom:var(--space-xs);font-family:var(--font-heading)}.category-square-subtitle{font-size:.95rem;color:var(--color-text-secondary);line-height:1.5;font-family:var(--font-body)}.category-header{padding:var(--space-2xl) 0;margin-bottom:var(--space-xl);display:flex;flex-direction:column;align-items:center;text-align:center}.category-header-icon{width:48px;height:48px;margin-bottom:var(--space-md)}.category-header-icon svg{width:100%;height:100%}.category-header h1{font-size:2.5rem;margin-bottom:var(--space-xs)}.category-header p{color:var(--color-text-secondary);font-size:1.15rem;max-width:600px}.study-detail{max-width:760px;margin:0 auto;padding:var(--space-2xl) var(--space-lg) var(--space-3xl)}.study-detail-meta{display:flex;align-items:center;gap:var(--space-md);margin-bottom:var(--space-lg);font-size:.875rem;color:var(--color-text-muted)}.study-detail h1{font-size:2rem;line-height:1.35;margin-bottom:var(--space-xl)}.study-detail-section{margin-bottom:var(--space-xl)}.study-detail-section h2{font-size:1.1rem;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted);margin-bottom:var(--space-sm)}.study-detail-section p{font-size:1.05rem;line-height:1.8;color:var(--color-text-secondary)}.study-detail-why{background:var(--color-primary-light);border-left:3px solid var(--color-primary);padding:var(--space-lg);border-radius:0 var(--radius-md) var(--radius-md) 0}.study-detail-why p{color:var(--color-text)}.study-source-link{display:inline-flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);background:var(--color-primary);color:#fff;border-radius:var(--radius-sm);font-weight:500;font-size:.95rem;transition:opacity var(--transition-fast)}.study-source-link:hover{opacity:.9;color:#fff}.footer{border-top:1px solid var(--color-border-light);padding:var(--space-xl) 0;margin-top:var(--space-3xl)}.footer-inner{display:flex;align-items:center;justify-content:space-between;font-size:.85rem;color:var(--color-text-muted)}.footer-links{display:flex;gap:var(--space-lg);list-style:none}.footer-links a{color:var(--color-text-muted);transition:color var(--transition-fast)}.footer-links a:hover{color:var(--color-text)}.about-content{max-width:720px;margin:0 auto}.about-content h1{margin-bottom:var(--space-lg)}.about-content h2{font-size:1.3rem;margin-top:var(--space-2xl);margin-bottom:var(--space-sm)}.about-content p{color:var(--color-text-secondary);margin-bottom:var(--space-md);font-size:1.02rem;line-height:1.8}.about-content ul{color:var(--color-text-secondary);padding-left:var(--space-lg);margin-bottom:var(--space-md)}.about-content li{margin-bottom:var(--space-sm);line-height:1.7}.disclaimer{background:#fef3c7;border:1px solid #FDE68A;border-radius:var(--radius-md);padding:var(--space-lg);margin-top:var(--space-xl)}.disclaimer p{color:#92400e;font-size:.9rem}.empty-state{text-align:center;padding:var(--space-3xl) var(--space-lg);color:var(--color-text-muted)}.empty-state p{font-size:1.05rem}@media(max-width:768px){:root{--nav-height: 56px}.nav-links{display:none;position:absolute;top:var(--nav-height);left:0;right:0;background:var(--color-surface);border-bottom:1px solid var(--color-border);flex-direction:column;padding:var(--space-md);box-shadow:var(--shadow-lg)}.nav-links.open{display:flex}.nav-link{padding:var(--space-sm) var(--space-md);width:100%}.nav-toggle{display:block}.nav-dropdown{position:static;transform:none;border:none;box-shadow:none;padding:0 0 0 var(--space-md);min-width:unset}.nav-dropdown.open{animation:none}h1{font-size:1.75rem}.hero h1{font-size:2rem}.study-grid{grid-template-columns:1fr}.category-grid-large{grid-template-columns:repeat(2,1fr)}.study-detail h1{font-size:1.5rem}.footer-inner{flex-direction:column;gap:var(--space-md);text-align:center}}@media(max-width:480px){.category-grid-large{grid-template-columns:1fr}}