:root{--bg:#FFFBF7;--bg-2:#FBF2EA;--surface:#FFFFFF;--ink:#2B2421;--ink-2:#5E544E;--ink-3:#7A6E67;--line:#EADDD1;--accent:#E46C1C;--accent-ink:#B4520F;--on-accent:#FFFFFF}
@media (prefers-color-scheme:dark){:root{--bg:#1C1714;--bg-2:#231C18;--surface:#2A221E;--ink:#F6EDE6;--ink-2:#CDBFB5;--ink-3:#A89A90;--line:#3A302A;--accent:#F07A2B;--accent-ink:#F5A066;--on-accent:#1C1714;color-scheme:dark}}
*{box-sizing:border-box}
html{scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 'Nunito Sans','Segoe UI',Arial,sans-serif;overflow-x:clip}
a{color:var(--accent-ink)}
h1,h2,h3{font-family:'Nunito',Arial,sans-serif;margin:0;line-height:1.2}
.wrap{max-width:900px;margin:0 auto;padding:0 20px}

/* Idioma: un bloque visible a la vez (sin JS queda el inglés) */
.lang-block{display:none}
html[data-lang="en"] .lang-block[data-lang="en"],html[data-lang="es"] .lang-block[data-lang="es"],html[data-lang="pt"] .lang-block[data-lang="pt"]{display:block}

.topbar{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;height:64px}
.logo img{height:30px;width:auto;display:block}
.langs{display:flex;gap:2px;background:var(--bg-2);border:1px solid var(--line);border-radius:999px;padding:3px}
.langs button{font:800 12.5px 'Nunito',Arial,sans-serif;letter-spacing:.04em;border:0;background:none;color:var(--ink-3);padding:6px 11px;border-radius:999px;cursor:pointer;min-width:40px}
.langs button[aria-pressed="true"]{background:var(--surface);color:var(--accent-ink);box-shadow:0 1px 3px rgba(0,0,0,.08)}

.hero{padding:clamp(36px,7vw,80px) 0 clamp(28px,4vw,48px);border-bottom:1px solid var(--line)}
.back{font-size:14px;font-weight:700;color:var(--ink-3);text-decoration:none}
.back:hover{color:var(--accent-ink)}
.hero h1{font-size:clamp(36px,6vw,60px);font-weight:900;margin:14px 0 12px;letter-spacing:-.01em}
.lede{font-size:clamp(17px,2vw,19px);color:var(--ink-2);max-width:60ch;margin:0}
.updated{display:inline-block;margin-top:16px;font-size:13px;font-weight:700;color:var(--ink-3);background:var(--bg-2);border:1px solid var(--line);border-radius:999px;padding:3px 12px}

.band{padding:clamp(36px,6vw,72px) 0}
.band.alt{background:var(--bg-2);border-block:1px solid var(--line)}
.eyebrow{font:800 12px 'Nunito',Arial,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-ink)}
.lead{font:800 clamp(20px,2.4vw,26px)/1.3 'Nunito',Arial,sans-serif;margin:10px 0 24px;max-width:46ch}
.principles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.principles article{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:20px}
.principles h3{font-size:18px;font-weight:900;margin-bottom:8px}
.principles p{font-size:14.5px;color:var(--ink-2);margin:0}
.toc{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.toc a{display:grid;grid-template-columns:36px 1fr;gap:2px 10px;text-decoration:none;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px 16px;transition:border-color .15s;align-content:start}
.toc a:hover{border-color:var(--accent)}
.toc-num{grid-row:span 2;font:800 13px 'Nunito',Arial,sans-serif;color:var(--accent-ink);padding-top:3px}
.toc-t{font:900 16px 'Nunito',Arial,sans-serif}
.toc-d{font-size:13.5px;color:var(--ink-3);line-height:1.45}

.docs{padding:clamp(28px,5vw,56px) 0 clamp(40px,6vw,72px)}
.doc{padding:28px 0;border-bottom:1px solid var(--line)}
.doc h2{font-size:clamp(24px,3vw,32px);font-weight:900;margin-bottom:8px}
.doc h3{font-size:17px;font-weight:800;margin:20px 0 6px}
.body{color:var(--ink-2);font-size:15.5px;overflow-wrap:anywhere}
.body p{margin:0 0 10px}
.body ul{padding-left:20px;display:flex;flex-direction:column;gap:6px;margin:6px 0 10px}
.body strong{color:var(--ink)}
.body code{font-size:13px;background:var(--bg-2);border:1px solid var(--line);border-radius:6px;padding:1px 6px;word-break:break-all}
.contact{margin-top:32px;background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:clamp(20px,3vw,28px);display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.contact h3{font-size:20px;font-weight:900}
.contact p{color:var(--ink-2);margin:0}
.btn{display:inline-flex;align-items:center;min-height:44px;padding:10px 20px;border-radius:999px;background:var(--accent);color:var(--on-accent);font:800 15px 'Nunito',Arial,sans-serif;text-decoration:none;max-width:100%;overflow-wrap:anywhere}
.btn:hover{filter:brightness(1.05)}
.disclaimer{margin:18px 0 0;font-size:12.5px;color:var(--ink-3)}

.lf{border-top:1px solid var(--line);padding:24px 0 32px;font-size:14px;color:var(--ink-3)}
.lf .wrap{display:flex;align-items:center;gap:12px 20px;flex-wrap:wrap}
.lf img{height:26px;width:auto}
.lf nav{display:flex;gap:16px;flex-wrap:wrap;flex:1}
.lf nav a{color:var(--ink-2);text-decoration:none;font-weight:700}
.lf nav a:hover{color:var(--accent-ink)}

@media (max-width:800px){.principles,.toc{grid-template-columns:1fr}}
@media (max-width:420px){.wrap{padding:0 16px}.logo img{height:26px}.langs button{padding:6px 8px;min-width:34px}}