/* Mismo diseño que la landing (firebase/landing): fondo oscuro, Geist e Instrument Serif. */
:root{--bg:#07070C;--card:#0E0E17;--ln:rgba(255,255,255,.08);--tx:#F4F3F8;--mu:#A6A3BA;--vil:#B8A6FF;color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.7 'Geist',system-ui,-apple-system,'Segoe UI',sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;background:radial-gradient(50% 40% at 85% 0%,rgba(109,74,255,.16),transparent 70%),radial-gradient(35% 30% at 0% 10%,rgba(47,91,255,.10),transparent 70%)}
a{color:var(--vil)}a:hover{color:#D6CCFF}
a:focus-visible{outline:2px solid var(--vil);outline-offset:3px;border-radius:4px}
.wrap{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}
@media(min-width:720px){.wrap{padding:0 32px}}

/* Encabezado */
.hdr{position:sticky;top:0;z-index:30;background:rgba(7,7,12,.8);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--ln)}
.hdr-in{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--tx);text-decoration:none;font-weight:650;font-size:19px;letter-spacing:.07em}
.logo:hover{color:#fff}
.logo img{display:block;width:34px;height:34px;border-radius:8px}
.hdr nav{display:flex;align-items:center;gap:20px}
.hdr nav .back{display:none;color:var(--mu);text-decoration:none;font-size:15px}
.hdr nav .back:hover{color:var(--tx)}
@media(min-width:640px){.hdr nav .back{display:inline}}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:999px;font-size:14px;font-weight:600;line-height:1;text-decoration:none;white-space:nowrap;color:#fff;background:linear-gradient(135deg,#6D4AFF,#2F5BFF);box-shadow:0 10px 30px -12px rgba(109,74,255,.8),inset 0 1px 0 rgba(255,255,255,.2);transition:transform .2s}
.btn:hover{color:#fff;transform:translateY(-1px)}

/* Documento */
main{max-width:820px;margin:0 auto;padding:56px 20px 40px}
@media(min-width:720px){main{padding:80px 32px 56px}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;font-size:13px;font-weight:500;color:var(--vil);letter-spacing:.02em}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:linear-gradient(135deg,#3FE6FF,#9B6CFF)}
h1{margin:0;font-size:clamp(34px,5vw,54px);line-height:1.06;letter-spacing:-.035em;font-weight:600;text-wrap:balance}
h1 em{font-family:'Instrument Serif',Georgia,serif;font-style:italic;font-weight:400;letter-spacing:-.01em;background:linear-gradient(100deg,#7FF0FF 0%,#C7B6FF 100%);-webkit-background-clip:text;background-clip:text;color:transparent;padding-right:.06em}
.updated{margin:14px 0 32px;color:var(--mu);font-size:17px}
h2{margin:48px 0 10px;font-size:22px;line-height:1.3;font-weight:600;letter-spacing:-.02em;scroll-margin-top:88px}
p,li{color:#D9D7E6}
strong{color:var(--tx);font-weight:600}
ul,ol{padding-left:22px}
li{margin:4px 0}
li::marker{color:var(--vil)}
.meta{display:grid;grid-template-columns:max-content 1fr;gap:10px 24px;margin:0 0 20px;padding:22px 24px;border-radius:20px;background:var(--card);border:1px solid var(--ln);font-size:15px}
.meta dt{color:var(--mu)}
.meta dd{margin:0;color:var(--tx)}
@media(max-width:600px){.meta{grid-template-columns:1fr;gap:2px}.meta dd{margin-bottom:10px}}
.toc{margin:0 0 8px;padding:22px 24px;border-radius:20px;background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));border:1px solid var(--ln);font-size:15px}
.toc strong{display:block;margin-bottom:8px;font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--mu)}
.toc ol{margin:0;padding-left:24px;columns:2;column-gap:32px}
@media(max-width:640px){.toc ol{columns:1}}
.toc li{margin:0 0 6px;break-inside:avoid;color:var(--mu)}
.toc li::marker{color:var(--mu);font-variant-numeric:tabular-nums}
.toc a{color:var(--tx);text-decoration:none}
.toc a:hover{color:var(--vil)}
.end{margin-top:56px;padding-top:24px;border-top:1px solid var(--ln);text-align:center;color:var(--mu);font-size:13px;letter-spacing:.12em}

/* Pie */
.ftr{border-top:1px solid var(--ln);padding:40px 0 48px}
.ftr-in{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:center}
.ftr p{margin:0;color:var(--mu);font-size:14px}
.ftr nav{display:flex;gap:24px;flex-wrap:wrap}
.ftr nav a{color:var(--mu);text-decoration:none;font-size:14px}
.ftr nav a:hover{color:var(--tx)}