:root{
  --bg:#fff; --fg:#000; --border: #000; --heavy:4px;
  --maxw: 1200px;
  --radius: 0;
  --gap: 16px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, Noto Sans, "Apple Color Emoji","Segoe UI Emoji";
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:var(--font);line-height:1.6}
img{max-width:100%;height:auto;border:var(--heavy) solid var(--border)}
a{color:var(--fg);text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:24px}
.header, .footer{border:var(--heavy) solid var(--border);padding:12px;margin:16px 0}
.header{display:flex;align-items:center;justify-content:space-between;gap:12px}
.logo{font-weight:900;font-size:24px;letter-spacing:1px}
nav a{display:inline-block;border:var(--heavy) solid var(--border);padding:8px 12px;margin-left:8px;text-decoration:none}
nav a:hover{background:#000;color:#fff}
h1,h2,h3{margin:8px 0 8px 0;text-transform:uppercase;border-bottom:var(--heavy) solid var(--border);padding-bottom:6px}
.section{border:var(--heavy) solid var(--border);padding:16px;margin:16px 0;background:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--gap)}
.card{border:var(--heavy) solid var(--border);padding:12px;background:#fff}
.button{border:var(--heavy) solid var(--border);padding:10px 16px;background:#fff;cursor:pointer;text-decoration:none;display:inline-block}
.button:hover{background:#000;color:#fff}
.hero{position:relative;border:var(--heavy) solid var(--border);overflow:hidden;aspect-ratio:16/9;background:#fff}
.hero .slide{position:absolute;inset:0;display:none}
.hero .slide.active{display:block}
.hero .controls{position:absolute;inset:auto 0 0 0;display:flex;justify-content:space-between;align-items:center;padding:8px;background:rgba(255,255,255,0.8);border-top:var(--heavy) solid var(--border)}
.hero .arrow{border:var(--heavy) solid var(--border);padding:6px 12px;cursor:pointer;background:#fff}
.dots{display:flex;gap:8px;align-items:center}
.dot{width:14px;height:14px;border-radius:50%;border:var(--heavy) solid var(--border);cursor:pointer}
.dot.active{background:#000}
.split{display:grid;grid-template-columns:1.2fr .8fr;gap:var(--gap)}
@media (max-width: 800px){.split{grid-template-columns:1fr} nav a{margin:6px 6px 0 0}}
blockquote{border-left: var(--heavy) solid var(--border);padding-left:12px;margin:12px 0}
ul.checklist{list-style:none;padding:0;margin:0}
ul.checklist li{border:var(--heavy) solid var(--border);margin:8px 0;padding:8px}