:root{--fg:#242424;--muted:#6b6b6b;--bg:#fff;--accent:#b83f53;--accent-dark:#9c3447;--border:#ececec;--code-bg:#f6f6f4;--letter-bg:#fbf6f7;--card-bg:#fff;--header-bg:#ffffffd9;--max:54rem;font-family:Montserrat,system-ui,sans-serif;line-height:1.7}[data-theme=dark]{--fg:#e4e4e4;--muted:#999;--bg:#1a1a1a;--accent:#e06c7c;--accent-dark:#c95464;--border:#333;--code-bg:#2a2a2a;--letter-bg:#2a2022;--card-bg:#222;--header-bg:#000000d9}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--fg);background:var(--bg);font-size:17px;-webkit-font-smoothing:antialiased}.site-header{position:sticky;top:0;z-index:10;max-width:var(--max);margin:0 auto;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem 1.5rem;padding:.7rem 1.5rem;background:var(--header-bg);backdrop-filter:saturate(180%)blur(10px);border-bottom:1px solid var(--border)}.site-header p{display:contents}.brand{display:inline-flex;align-items:center;gap:.65rem}.brand-home{display:inline-flex;flex-shrink:0;text-decoration:none}.brand-mark{display:inline-block;width:34px;height:34px;background:url(../images/logo.svg) 50%/contain no-repeat}.brand-text{display:flex;flex-direction:column;line-height:1.2}.brand-name{font-weight:700;font-size:1.1rem;color:var(--fg);text-decoration:none}.brand-name:hover{color:var(--accent)}.brand-by{font-size:.78rem;color:var(--muted)}.brand-by a{color:var(--muted);text-decoration:underline;text-underline-offset:2px}.brand-by a:hover{color:var(--accent)}.site-header nav{display:flex;flex-wrap:wrap;gap:1.5rem}.site-header nav a{color:var(--fg);text-decoration:none;font-weight:500;font-size:.95rem;transition:color .15s}.site-header nav a:hover{color:var(--accent)}.site-header nav a[aria-current=page]{color:var(--accent);font-weight:600;border-bottom:2px solid var(--accent)}main{max-width:var(--max);margin:0 auto;padding:2.5rem 1.5rem 4rem}h1{font-size:clamp(2rem,5vw,2.75rem);font-weight:600;letter-spacing:-.01em;line-height:1.15;margin:0 0 1.5rem}h2{font-size:1.5rem;font-weight:600;margin:2.75rem 0 .75rem;padding-top:.5rem;scroll-margin-top:4.5rem}h3{font-size:1.2rem;font-weight:600;margin:2rem 0 .5rem;scroll-margin-top:4.5rem}p{margin:.9rem 0}a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:2px}a:hover{color:var(--accent-dark)}ul,ol{padding-left:1.4rem}li{margin:.4rem 0}code{background:var(--code-bg);padding:.12em .4em;border-radius:5px;font-size:.88em;font-family:JetBrains Mono,ui-monospace,SF Mono,Menlo,monospace}pre{background:var(--code-bg);border:1px solid var(--border);padding:1rem 1.2rem;border-radius:10px;overflow-x:auto;line-height:1.5}pre code{background:0 0;padding:0;font-size:.85rem}.theme-toggle{background:0 0;border:1px solid var(--border);border-radius:50%;width:36px;height:36px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;color:var(--fg);font-size:1.1rem;transition:background .2s,border-color .2s;flex-shrink:0}.theme-toggle:hover{background:var(--code-bg);border-color:var(--muted)}.theme-icon-sun{display:inline}.theme-icon-moon{display:none}[data-theme=dark] .theme-icon-sun{display:none}[data-theme=dark] .theme-icon-moon{display:inline}.site-footer{max-width:var(--max);margin:3rem auto 0;padding:1.5rem;color:var(--muted);font-size:.9rem;border-top:1px solid var(--border)}