:root{--bg: #f8f9fa;--surface: #ffffff;--text: #1a1a1a;--muted: #5c6370;--border: #e2e5e9;--accent: #2563eb;--accent-hover: #1d4ed8;--code-bg: #f1f3f5;--font-sans: "IBM Plex Sans", system-ui, -apple-system, sans-serif;--font-mono: "IBM Plex Mono", ui-monospace, monospace;--max-width: 42rem;--page-width: 64rem}@media (prefers-color-scheme: dark){:root{--bg: #0f1114;--surface: #161a1f;--text: #e8eaed;--muted: #9aa0a6;--border: #2a3038;--accent: #60a5fa;--accent-hover: #93c5fd;--code-bg: #1e242c}}*,*::before,*::after{box-sizing:border-box}html{font-size:17px;-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font-sans);line-height:1.65;color:var(--text);background:var(--bg)}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover);text-decoration:underline}.site-header{border-bottom:1px solid var(--border);background:var(--surface)}.site-header__inner{max-width:var(--page-width);margin:0 auto;padding:1rem 1.25rem;display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:0.75rem 1.5rem}.site-title{font-weight:600;font-size:1.1rem;color:var(--text);text-decoration:none}.site-title:hover{color:var(--accent);text-decoration:none}.site-nav{display:flex;flex-wrap:wrap;align-items:center;gap:0.25rem 1.25rem;font-size:0.9rem}.site-nav>a{color:var(--muted);text-decoration:none}.site-nav>a:hover,.site-nav>a[aria-current="page"]{color:var(--accent)}.nav-dropdown{position:relative}.nav-dropdown__toggle{color:var(--muted);text-decoration:none;cursor:default}.nav-dropdown:hover .nav-dropdown__toggle,.nav-dropdown__toggle[aria-current="page"]{color:var(--accent)}.nav-dropdown__menu{display:none;position:absolute;top:100%;left:0;min-width:18rem;margin:0.35rem 0 0;padding:0.5rem 0;list-style:none;background:var(--surface);border:1px solid var(--border);border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,0.08);z-index:100}.nav-dropdown:hover .nav-dropdown__menu,.nav-dropdown:focus-within .nav-dropdown__menu{display:block}.nav-dropdown__menu li{padding:0.5rem 1rem}.nav-dropdown__menu a{font-weight:500;color:var(--text);text-decoration:none;display:block}.nav-dropdown__menu a:hover{color:var(--accent)}.nav-dropdown__hint{display:block;font-size:0.75rem;color:var(--muted);margin-top:0.15rem;line-height:1.35}main{max-width:var(--page-width);margin:0 auto;padding:2rem 1.25rem 4rem}.content{max-width:var(--max-width)}.content--wide{max-width:var(--page-width)}.site-footer{border-top:1px solid var(--border);padding:1.5rem 1.25rem;font-size:0.85rem;color:var(--muted);text-align:center}h1,h2,h3{line-height:1.25;font-weight:600}h1{font-size:1.75rem;margin-top:0}h2{font-size:1.35rem;margin-top:2rem}.meta{font-size:0.85rem;color:var(--muted);margin-bottom:1.5rem}.meta a{color:var(--muted)}.tags{display:flex;flex-wrap:wrap;gap:0.35rem;margin-top:0.5rem}.tag{font-size:0.75rem;padding:0.15rem 0.5rem;border-radius:3px;background:var(--code-bg);color:var(--muted)}.post-list{list-style:none;padding:0;margin:0}.post-list li{padding:1rem 0;border-bottom:1px solid var(--border)}.post-list li:first-child{padding-top:0}.post-list__title{font-weight:600;font-size:1.05rem}.post-list__excerpt{margin:0.35rem 0 0;font-size:0.9rem;color:var(--muted)}.section-title{font-size:0.75rem;font-weight:600;text-transform:uppercase;letter-spacing:0.06em;color:var(--muted);margin:2.5rem 0 1rem}.section-title:first-child{margin-top:0}.hero{margin-bottom:2rem}.hero p{color:var(--muted);font-size:1.05rem}.series-grid{display:grid;gap:1.25rem;margin:1rem 0 2rem}@media (min-width: 40rem){.series-grid{grid-template-columns:1fr 1fr}}@media (min-width: 56rem){.series-grid{grid-template-columns:1fr 1fr 1fr}}.series-card{padding:1.25rem;border:1px solid var(--border);border-radius:6px;background:var(--surface)}.series-card h3{margin:0 0 0.35rem;font-size:1.05rem}.series-card__subtitle{margin:0;font-size:0.85rem;color:var(--muted)}.series-card__latest{margin:0.75rem 0 0;font-size:0.85rem}.series-hero{margin-bottom:1.5rem}.series-hero__subtitle{color:var(--muted);font-size:1.05rem;margin-top:0.35rem}.series-tabs{display:flex;gap:0.5rem;margin:1.5rem 0;padding-bottom:0.75rem;border-bottom:1px solid var(--border)}.series-tabs a{padding:0.35rem 0.85rem;border-radius:4px;color:var(--muted);text-decoration:none;font-size:0.9rem;font-weight:500}.series-tabs a:hover{color:var(--accent);background:var(--code-bg)}.series-tabs a[aria-current="true"]{color:var(--accent);background:var(--code-bg)}.series-section{scroll-margin-top:1rem}.empty-note{color:var(--muted);font-size:0.9rem}pre,code{font-family:var(--font-mono);font-size:0.85em}pre{padding:1rem;overflow-x:auto;border-radius:4px;background:var(--code-bg);border:1px solid var(--border)}:not(pre)>code{padding:0.15em 0.35em;border-radius:3px;background:var(--code-bg)}blockquote{margin:1.5rem 0;padding-left:1rem;border-left:3px solid var(--border);color:var(--muted)}table{width:100%;border-collapse:collapse;font-size:0.9rem}th,td{padding:0.5rem 0.75rem;border:1px solid var(--border);text-align:left}article img{max-width:100%;height:auto}