.site-header{position:sticky;top:0;z-index:10;background:var(--bg);border-bottom:1px solid var(--border);-webkit-backdrop-filter:saturate(180%) blur(8px);backdrop-filter:saturate(180%) blur(8px)}.site-nav{max-width:var(--content-width);margin:0 auto;padding:.75rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}.site-logo{display:inline-flex;align-items:center;flex-shrink:0}.site-logo img{height:100px;width:auto;display:block}:root[data-theme=dark] .site-logo img{filter:invert(1)}@media(prefers-color-scheme:dark){:root:not([data-theme]) .site-logo img{filter:invert(1)}}.nav-actions{display:flex;align-items:center;gap:1.25rem;flex-wrap:wrap}.nav-links{list-style:none;margin:0;padding:0;display:flex;align-items:center;gap:1.5rem;flex-wrap:wrap}.theme-toggle{border:1px solid var(--border);background:transparent;color:var(--text-muted);font:inherit;font-size:.85rem;line-height:1;padding:.45rem .75rem;border-radius:999px;cursor:pointer;transition:color .15s ease,border-color .15s ease}.theme-toggle:hover{color:var(--text);border-color:var(--text-muted)}.nav-links a{color:var(--text-muted);text-decoration:none;font-size:.95rem;letter-spacing:.01em;padding:.25rem 0;border-bottom:2px solid transparent;transition:color .15s ease,border-color .15s ease}.nav-links a:hover{color:var(--text)}.nav-links a.active{color:var(--text);border-bottom-color:var(--accent)}@media(max-width:540px){.site-nav{flex-direction:column;align-items:flex-start}.nav-actions{width:100%;justify-content:space-between}.nav-links{gap:1rem}}.site-footer{margin-top:auto;border-top:1px solid var(--border);background:var(--bg)}.footer-inner{max-width:var(--content-width);margin:0 auto;padding:1.5rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}.footer-copy{margin:0;color:var(--text-muted);font-size:.85rem}.footer-links{list-style:none;margin:0;padding:0;display:flex;gap:1.25rem}.footer-links a{color:var(--text-muted);text-decoration:none;font-size:.85rem;transition:color .15s ease}.footer-links a:hover{color:var(--text)}:root{--bg: #ffffff;--text: #1a1a1a;--text-muted: #6b6b6b;--border: #e6e6e6;--accent: #335d92;--content-width: 960px}:root[data-theme=dark]{--bg: #0f0f10;--text: #ededed;--text-muted: #a0a0a0;--border: #2a2a2c;--accent: #6ea8fe}@media(prefers-color-scheme:dark){:root:not([data-theme]){--bg: #0f0f10;--text: #ededed;--text-muted: #a0a0a0;--border: #2a2a2c;--accent: #6ea8fe}}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--accent)}.app-shell{display:flex;flex-direction:column;min-height:100vh}.site-main{flex:1 0 auto;width:100%;max-width:var(--content-width);margin:0 auto;padding:2.5rem 1.25rem}h1{font-size:2.25rem;font-weight:600;line-height:1.2;margin:0 0 1rem}h2{font-size:1.4rem;font-weight:600;margin:2rem 0 .75rem}p{margin:0 0 1rem;max-width:65ch}