*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;font-size:1rem;line-height:1.7;color:#1a1a1a;background:#fafafa;min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;margin-top:2rem;margin-bottom:1rem}h1{font-size:2rem}h2{font-size:1.5rem;border-bottom:1px solid #e5e5e5;padding-bottom:.5rem}h3{font-size:1.25rem}h4{font-size:1.1rem}p{margin-bottom:1rem}a{color:#4f46e5;text-decoration:none}a:hover{text-decoration:underline}strong{font-weight:600}em{font-style:italic}hr{border:none;border-top:1px solid #e5e5e5;margin:2rem 0}ul,ol{margin-bottom:1rem;padding-left:1.5rem}li{margin-bottom:.25rem}code{font-family:"JetBrains Mono","Fira Code","SF Mono",Monaco,"Cascadia Code",monospace;font-size:.9em;background:#f5f5f5;padding:.15em .4em;border-radius:4px}pre{font-family:"JetBrains Mono","Fira Code","SF Mono",Monaco,"Cascadia Code",monospace;font-size:.85rem;background:#282c34;color:#abb2bf;padding:1rem;border-radius:8px;overflow-x:auto;margin-bottom:1rem}pre code{background:none;padding:0;font-size:inherit}table{width:100%;border-collapse:collapse;margin-bottom:1rem;font-size:.95rem}th,td{padding:.75rem;text-align:left;border-bottom:1px solid #e5e5e5}th{font-weight:600;background:#f5f5f5}tr:hover{background:rgba(0,0,0,.02)}blockquote{border-left:4px solid #4f46e5;padding-left:1rem;margin:1rem 0;color:#666;font-style:italic}header{background:#fff;border-bottom:1px solid #e5e5e5;padding:1rem 1.5rem;position:sticky;top:0;z-index:100}header nav{max-width:48rem;margin:0 auto;display:flex;justify-content:space-between;align-items:center}header .logo{display:flex;align-items:center;gap:.5rem;font-weight:600;color:#1a1a1a;text-decoration:none}header .logo .logo-icon{font-size:1.5rem;color:#4f46e5}header .logo .logo-text{font-size:1.1rem}header .nav-links{display:flex;gap:1.5rem}header .nav-links a{color:#666;font-size:.95rem}header .nav-links a:hover{color:#4f46e5;text-decoration:none}main{flex:1;padding:2rem 1.5rem;max-width:48rem;margin:0 auto;width:100%}.content h1:first-child{margin-top:0}footer{background:#fff;border-top:1px solid #e5e5e5;padding:1.5rem 1.5rem;text-align:center;color:#666;font-size:.9rem}footer a{color:#666}footer a:hover{color:#4f46e5}.katex-display{overflow-x:auto;overflow-y:hidden;padding:.5rem 0}@media (max-width: 640px){html{font-size:15px}h1{font-size:1.75rem}h2{font-size:1.35rem}h3{font-size:1.15rem}header .logo-text{display:none}pre{font-size:.8rem;padding:.75rem}}@media print{header,footer{display:none}main{max-width:100%;padding:0}}