:root{--bg: #9a9a9a;--surface: #5e5e5e;--surface-2: #525252;--header-bg: #6e6e6e;--border: rgba(255, 255, 255, .16);--text: #ffffff;--text-muted: #e6e6e6;--text-soft: #f0f0f0;--accent: #ffffff;--accent-hover: #f2f2f2;--accent-soft: rgba(255, 255, 255, .1);--icon-bg: #2e2e2e;--radius: 16px;--shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);--maxw: 1080px;--space: clamp(16px, 4vw, 32px);--lvl-high-bg: rgba(52, 199, 89, .14);--lvl-high-fg: #5edc8a;--lvl-mid-bg: rgba(255, 179, 64, .14);--lvl-mid-fg: #ffc46b;--lvl-low-bg: rgba(255, 99, 99, .14);--lvl-low-fg: #ff8a8a}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";background:var(--bg);color:var(--text);line-height:1.6;font-size:clamp(16px,1.6vw,17px);-webkit-font-smoothing:antialiased}a{color:var(--text)}::selection{background:#ffffff2e}.container{width:100%;max-width:var(--maxw);margin:0 auto;padding-inline:var(--space)}.site-header{background:var(--header-bg);border-bottom:1px solid var(--border)}.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:16px;flex-wrap:wrap}.brand{display:flex;align-items:center;gap:10px;font-weight:700;text-decoration:none;color:var(--text);font-size:1.05rem}.brand .brand-name{color:var(--text)}.brand{gap:14px}.brand .logo{display:inline-flex;width:56px;height:56px;align-items:center;justify-content:center}.brand .logo img{width:100%;height:100%;display:block}.site-header .container{padding-block:18px}.nav-back{font-size:.95rem;text-decoration:none;color:var(--text-muted)}.nav-back:hover{color:var(--accent)}.cat-head 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ease}.cat-card:hover{transform:translateY(-2px);border-color:#ffffff59;background:var(--surface-2)}.cat-card .cat-icon{font-size:1.5rem;width:52px;height:52px;display:inline-flex;align-items:center;justify-content:center;background:var(--icon-bg);border-radius:50%;margin-bottom:4px}.cat-card h3{margin:4px 0 0;font-size:1.15rem;color:var(--text)}.cat-card p{margin:0;color:var(--text-muted);font-size:.95rem}.cat-card .count{margin-top:auto;padding-top:10px;font-size:.85rem;color:var(--text-muted);font-weight:500}.study-card{display:flex;flex-direction:column;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:clamp(18px,3vw,24px);box-shadow:var(--shadow)}.study-card h3{margin:0;font-size:1.2rem;letter-spacing:-.01em}.study-claim{margin:0;font-weight:600;font-size:1.02rem}.study-field{margin:0}.study-field .label{display:block;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin-bottom:2px}.study-field .value{color:var(--text)}.study-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:4px;padding-top:14px;border-top:1px solid var(--border)}.badge{display:inline-flex;align-items:center;gap:6px;font-size:.82rem;font-weight:600;padding:4px 10px;border-radius:999px;white-space:nowrap}.badge.high{background:var(--lvl-high-bg);color:var(--lvl-high-fg)}.badge.mid{background:var(--lvl-mid-bg);color:var(--lvl-mid-fg)}.badge.low{background:var(--lvl-low-bg);color:var(--lvl-low-fg)}.source-link{margin-left:auto;display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:.9rem;text-decoration:none;color:var(--accent);padding:8px 14px;border:1px solid var(--accent);border-radius:999px;transition:background .15s ease,color .15s ease,border-color .15s ease}.source-link:hover{background:var(--accent);color:#fff;border-color:var(--accent)}.source-pub{font-size:.8rem;color:var(--text-muted);width:100%}.site-footer{border-top:1px solid var(--border);background:var(--header-bg);padding-block:28px;color:var(--text-muted);font-size:.9rem}.site-footer .container{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}.cat-head{padding-block:clamp(28px,6vw,48px) 8px}.cat-head .eyebrow{color:var(--text-muted);font-size:.9rem;margin:0 0 8px}.cat-head h1{font-size:clamp(1.6rem,4.5vw,2.2rem);margin:0 0 8px;display:flex;align-items:center;gap:12px}.cat-head p{margin:0;color:var(--text-muted);max-width:60ch}@media (max-width: 520px){.source-link{margin-left:0}.study-meta{flex-direction:column;align-items:flex-start}}@media (prefers-reduced-motion: reduce){*{transition:none!important;scroll-behavior:auto}}