:root{--primary-color:#0A2540;--text-color:#1a1a1a;--text-light:#666;--background-color:#fff;--background-light:#f9fafb;--section-background:#ffffff;--border-color:#eaeaea;--tag-bg:#f5f5f5;--tag-hover-bg:#eaeaea;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--font-serif:"Georgia","Times New Roman",serif;--border-radius:8px;--max-width:1200px;--transition:all 0.2s ease}*{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-sans);color:var(--text-color);line-height:1.6;background-color:var(--background-light);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none;transition:color .2s ease}a:hover{color:var(--primary-color)}img{max-width:100%;height:auto}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;margin-bottom:1rem}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.75rem}h4{font-size:1.5rem}p{margin-bottom:1.5rem}blockquote{border-left:4px solid var(--primary-color);margin:1.5rem 0;padding:1rem 1.5rem;background:var(--background-light);border-radius:0 var(--border-radius) var(--border-radius) 0;font-style:italic;color:var(--text-light)}blockquote p:last-child{margin-bottom:0}pre{border-radius:var(--border-radius);padding:1rem;overflow-x:auto;font-size:.9rem;margin:1.5rem 0}code,pre{background:#f6f8fa}code{font-family:Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:.9em;padding:.2em .4em;border-radius:3px}ol,ul{padding-left:1.5rem;margin-bottom:1.5rem}li{margin-bottom:.5rem}table{width:100%;border-collapse:collapse;margin:1.5rem 0}td,th{padding:.75rem;border:1px solid var(--border-color);text-align:left}th{background:var(--background-light);font-weight:600}button{cursor:pointer;border:none;background:none;font:inherit}::selection{background:var(--primary-color);color:white}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--background-light)}::-webkit-scrollbar-thumb{background:#ccc;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#999}@media (max-width:768px){html{font-size:14px}.container{padding:0 1rem}.section{padding:1.5rem}}@media print{body{background:none;color:black}.container{max-width:none;padding:0}.section{box-shadow:none;border:1px solid #ddd}}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 1.5rem}.section{background-color:var(--section-background);box-shadow:0 1px 3px rgba(0,0,0,.05);padding:2rem;margin-bottom:2rem}.section,.section-title{border-radius:var(--border-radius)}.section-title{background-color:rgba(0,112,243,.08);padding:.5rem 1rem;display:inline-block;margin-bottom:1.5rem;color:var(--primary-color)}.text-center{text-align:center}.text-light{color:var(--text-light)}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.reading-progress-container{position:fixed;top:0;left:0;width:100%;height:4px;background:rgba(10,37,64,.1);z-index:1000;transform:translateZ(0);will-change:transform}.reading-progress-bar{height:100%;background:var(--primary-color);width:0;transition:width 50ms ease;will-change:width;transform:translateZ(0);-webkit-backface-visibility:hidden;backface-visibility:hidden}.post-tag{display:inline-flex;align-items:center;background:var(--tag-bg);color:var(--text-color);padding:.5rem 1.2rem;border-radius:20px;font-size:.9rem;font-weight:500;margin:.25rem;transition:all .2s ease;text-decoration:none;border:1px solid var(--border-color)}.post-tag:hover{background:var(--tag-hover-bg);transform:translateY(-1px);box-shadow:0 2px 4px rgba(0,0,0,.05);border-color:var(--primary-color);color:var(--primary-color)}