:root{--font-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--font-serif:"Lora",Georgia,"Times New Roman",serif;--max-width-content:720px;--max-width-page:1000px;--spacing-unit:1rem}.light-mode{--bg-color:#fafafa;--text-primary:#111;--text-secondary:#555;--accent-color:#000;--border-color:#eee;--selection-bg:#e5e5e5}.dark-mode{--bg-color:#111;--text-primary:#f5f5f5;--text-secondary:#a0a0a0;--accent-color:#fff;--border-color:#222;--selection-bg:#333}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-primary);font-family:var(--font-sans);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .4s ease,color .4s ease}::-moz-selection{background-color:var(--selection-bg)}::selection{background-color:var(--selection-bg)}a{color:inherit;text-decoration:none;transition:opacity .2s}a:hover{opacity:.7}h1,h2,h3,h4,h5,h6{color:var(--text-primary);font-weight:600;line-height:1.25;margin-bottom:.5em}.container{margin:0 auto;max-width:var(--max-width-page);padding:0 var(--spacing-unit)}.content-wrapper{margin:4rem auto;max-width:var(--max-width-content)}.prose{color:var(--text-primary);font-family:var(--font-serif);font-size:1.125rem}.prose h1,.prose h2,.prose h3{font-family:var(--font-sans);margin-top:2.5rem}.prose p{margin-bottom:1.5rem}.prose hr{border:none;border-top:1px solid var(--border-color);margin:3rem 0}header{border-bottom:1px solid var(--border-color);padding:2rem 0}nav{align-items:center;display:flex;justify-content:space-between}.nav-links{display:flex;gap:2rem}.nav-links a{font-size:.9rem;font-weight:500;letter-spacing:.05em;text-transform:uppercase}footer{border-top:1px solid var(--border-color);color:var(--text-secondary);font-size:.85rem;margin-top:8rem;padding:4rem 0 2rem;text-align:center}.mt-4{margin-top:1rem}.mb-8{margin-bottom:2rem}.text-muted{color:var(--text-secondary)}