:root{--background-color:#f4f4f9;--text-color:#333;--card-background:#fff;--link-color:#0056b3;--border-color:#e0e0e0;--header-text-color:#003d80;--shadow-color:rgba(0,0,0,.08)}@media (prefers-color-scheme:dark){:root{--background-color:#121212;--text-color:#e0e0e0;--card-background:#1e1e1e;--link-color:#90caf9;--border-color:#333;--header-text-color:#bb86fc;--shadow-color:hsla(0,0%,100%,.1)}}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--background-color);color:var(--text-color);line-height:1.6}.container{max-width:900px;margin:0 auto;padding:1rem}.site-footer,.site-header{text-align:center;padding:2rem 0;border-bottom:1px solid var(--border-color)}.site-footer{border-top:1px solid var(--border-color);border-bottom:none;margin-top:2rem;font-size:.9em;color:#888}.site-header h1{color:var(--header-text-color);font-size:2.5rem;margin:0}.site-header p{font-size:1.1rem;color:#666}@media (prefers-color-scheme:dark){.site-header p{color:#aaa}}.posts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:1.5rem;gap:1.5rem;padding:2rem 0}.post-card-link{text-decoration:none;color:inherit}.post-card{background-color:var(--card-background);border-radius:12px;overflow:hidden;box-shadow:0 4px 15px var(--shadow-color);transition:transform .2s ease-in-out,box-shadow .2s ease-in-out}.post-card:hover{transform:translateY(-5px);box-shadow:0 8px 25px var(--shadow-color)}.post-card-image{height:180px;background-size:cover;background-position:50%;background-color:#eee}@media (prefers-color-scheme:dark){.post-card-image{background-color:#2a2a2a}}.post-card-content{padding:1rem}.post-card-title{margin:0 0 .5rem;font-size:1.2rem;line-height:1.4}.post-card-date{font-size:.85rem;color:#777}@media (prefers-color-scheme:dark){.post-card-date{color:#aaa}}.article-header{padding:2rem 0;text-align:center}.article-header .back-link{display:block;margin-bottom:1rem;color:var(--link-color);text-decoration:none;font-weight:500}.article-header h1{margin:0 0 .5rem;font-size:2.2rem}.article-header time{color:#666}@media (prefers-color-scheme:dark){.article-header time{color:#aaa}}.article-content{background:var(--card-background);padding:2rem;border-radius:8px;box-shadow:0 2px 8px var(--shadow-color)}.article-content img{max-width:100%;height:auto;border-radius:8px;margin:1rem 0;display:block}.article-content a{color:var(--link-color);font-weight:500}.source-button{display:inline-block;margin:2rem auto;padding:12px 25px;background-color:var(--link-color);color:#fff;border-radius:8px;text-decoration:none;font-weight:700;transition:background-color .2s}.source-button:hover{background-color:#004494}@media (prefers-color-scheme:dark){.source-button:hover{background-color:#a9d4ff;color:#121212}}