:root{--ink:#1d1d1f;--muted:#6e6e73;--hair:#e8e8ed;--alt:#f5f5f7;--accent:#1f5c45;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Inter","Helvetica Neue",Helvetica,Arial,sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:120px}
body{margin:0;font-family:var(--font);font-size:19px;line-height:1.5;color:var(--ink);background:#fff;font-weight:400;-webkit-font-smoothing:antialiased}
html[lang=es] .l-en,html[lang=en] .l-es{display:none}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:12px 16px;z-index:60}
.skip:focus{left:12px;top:12px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.top{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px)}
.top-in,.cats,main,.foot{max-width:620px;margin:0 auto;padding-left:20px;padding-right:20px}
.top-in{display:flex;align-items:center;justify-content:space-between;min-height:54px}
.brand{font-weight:700;font-size:1.05rem;letter-spacing:-.02em;color:var(--ink);min-height:44px;display:flex;align-items:center}
.brand:hover{text-decoration:none}
.lang{display:flex;background:var(--alt);border-radius:999px;padding:3px}
.lang button{font:inherit;font-size:.82rem;min-width:48px;min-height:44px;border:0;border-radius:999px;background:transparent;color:var(--muted);cursor:pointer}
.lang button[aria-pressed=true]{background:#fff;color:var(--ink);box-shadow:0 1px 4px rgba(0,0,0,.12)}
.cats{display:flex;gap:8px;overflow-x:auto;padding-bottom:10px;scrollbar-width:none}
.cats::-webkit-scrollbar{display:none}
.cats a{flex:none;display:flex;align-items:center;min-height:40px;padding:0 15px;border-radius:999px;background:var(--alt);color:var(--ink);font-size:.85rem;white-space:nowrap}
.cats a:hover{background:#e8e8ed;text-decoration:none}
h1,h2,h3{font-weight:700;margin:0}
h1{font-size:2.6rem;letter-spacing:-.035em;line-height:1.05;margin:36px 0 6px;text-align:center}
.demo{font-size:.8rem;color:var(--muted);margin:0 0 12px;text-align:center}
h2{font-size:1.6rem;letter-spacing:-.025em;margin:44px 0 6px}
.items{list-style:none;margin:0;padding:0}
.items li{padding:14px 0;border-bottom:1px solid var(--hair)}
.items li:last-child{border-bottom:0}
.it-top{display:flex;justify-content:space-between;align-items:baseline;gap:16px}
h3{font-size:1.02rem;letter-spacing:-.01em}
.pr{white-space:nowrap}
.items p{margin:3px 0 0;color:var(--muted);font-size:.9rem}
.tag{display:inline-block;font-size:.78rem;color:var(--accent);margin-left:4px}
.note{font-size:.8rem;color:var(--muted);margin:30px 0 0;text-align:center}
.foot{padding-top:24px;padding-bottom:44px;font-size:.8rem;color:var(--muted);text-align:center}
.foot>a{display:inline-flex;align-items:center;min-height:44px;font-size:.95rem}
.foot p{margin:4px 0 0}