/* Nexo Terra — estilos compartidos de /guias (hub + guías). Nav y footer = mismo CSS que faq.html. */
:root{--bg:#070A0F;--bg2:#05060A;--panel:#0C1016;--bone:#ECE7DD;--sub:#9aa0a8;--dim:#7a818b;--sand:#D8B27A;--sand2:#f0c98f;--green:#3ecf8e;--line:rgba(216,178,122,.14);--line2:rgba(236,231,221,.08);--edge:max(clamp(22px, 4.5vw, 88px), calc((100vw - 1360px) / 2))}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{background:var(--bg);color:var(--bone);font-family:'Manrope',sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
[hidden]{display:none!important}
h1,h2,h3{text-wrap:balance}
p{text-wrap:pretty}
::selection{background:var(--sand);color:#15110a}
a{color:inherit;text-decoration:none}
.prog{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--sand),var(--sand2));z-index:120}

/* ---------- NAV ---------- */
nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:18px var(--edge);transition:padding .4s,background .4s,border-color .4s;border-bottom:1px solid transparent}
nav.scrolled{padding:12px var(--edge);background:rgba(7,10,15,.72);backdrop-filter:blur(14px);border-color:var(--line2)}
.brand{display:flex;align-items:center;gap:11px;position:relative;z-index:3}.brand img{height:28px}.brand b{font-family:'Cabinet Grotesk';font-weight:800;font-size:19px;letter-spacing:-.02em}
.menu{display:flex;align-items:center;gap:34px}
.links{display:flex;gap:32px}.links a{color:var(--sub);font-size:15px;font-weight:500;transition:color .2s}.links a:hover{color:var(--bone)}.links a.act{color:var(--bone)}
.ncta{color:#15110a;background:var(--sand);padding:11px 20px;border-radius:999px;font-size:14.5px;font-weight:600;transition:transform .25s,box-shadow .25s}
.ncta:hover{transform:translateY(-1px);box-shadow:0 10px 30px rgba(216,178,122,.28)}
.navtoggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;background:none;border:0;cursor:pointer;position:relative;z-index:3}
.navtoggle span{display:block;height:2px;width:24px;margin:0 auto;background:var(--bone);transition:transform .3s,opacity .2s}
.navtoggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.navtoggle.open span:nth-child(2){opacity:0}
.navtoggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:920px){
  .navtoggle{display:flex}
  .menu{position:fixed;top:0;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;padding:84px var(--edge) 30px;background:rgba(7,10,15,.98);backdrop-filter:blur(16px);border-bottom:1px solid var(--line2);transform:translateY(-101%);transition:transform .45s cubic-bezier(.16,1,.3,1);z-index:1}
  .menu.open{transform:translateY(0)}
  .links{flex-direction:column;gap:0}
  .links a{font-size:18px;padding:17px 2px;border-bottom:1px solid var(--line2)}
  .ncta{margin-top:22px;text-align:center;padding:15px 20px;font-size:16px}
}

/* ---------- buttons ---------- */
.btn{position:relative;display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:15.5px;border-radius:999px;padding:16px 30px;overflow:hidden;cursor:pointer;transition:transform .25s}
.btn .ar{transition:transform .4s cubic-bezier(.16,1,.3,1)}.btn:hover .ar{transform:translateX(5px)}
.b1{color:#15110a;background:linear-gradient(180deg,var(--sand2),var(--sand));box-shadow:0 14px 46px rgba(216,178,122,.22)}
.b2{color:var(--bone);border:1.5px solid var(--line)}.b2:hover{border-color:var(--sand)}
.btn:focus-visible,.ncta:focus-visible{outline:2px solid var(--sand);outline-offset:3px}

/* ---------- opener ---------- */
main{position:relative;z-index:5}
.opener{padding:clamp(124px,16vh,184px) var(--edge) clamp(30px,4vw,48px)}
.crumbs{font-family:'Source Code Pro',monospace;font-size:12.5px;letter-spacing:.06em;color:var(--dim);margin-bottom:30px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumbs a{color:var(--sub);transition:color .2s}.crumbs a:hover{color:var(--bone)}
.crumbs .sep{color:rgba(216,178,122,.5)}
.crumbs [aria-current]{color:var(--dim)}
.eyebrow{font-family:'Source Code Pro',monospace;font-size:13px;letter-spacing:.26em;text-transform:uppercase;color:var(--dim);display:flex;align-items:center;gap:12px;margin-bottom:24px}
.eyebrow .p{flex:none;width:8px;height:8px;border-radius:50%;background:var(--sand);animation:pl 2.6s ease-in-out infinite}
@keyframes pl{50%{opacity:.55}}
@media(prefers-reduced-motion:reduce){.eyebrow .p{animation:none}}
.opener h1{font-family:'Cabinet Grotesk';font-weight:800;font-size:clamp(2.1rem,4.7vw,3.75rem);line-height:1.02;letter-spacing:-.035em;max-width:21ch}
.opener .lead{margin-top:24px;color:var(--sub);font-size:clamp(1.08rem,1.35vw,1.25rem);line-height:1.6;max-width:62ch}

/* respuesta corta (answer-first) */
.answer{margin-top:clamp(28px,3.4vw,40px);max-width:74ch;padding:clamp(22px,2.6vw,30px) clamp(22px,2.8vw,34px);border:1px solid var(--line);border-radius:16px;background:linear-gradient(180deg,rgba(216,178,122,.06),rgba(216,178,122,.015)),var(--panel)}
.answer .lbl{font-family:'Source Code Pro',monospace;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--sand);margin-bottom:12px}
.answer p{color:var(--bone);font-size:clamp(1.06rem,1.3vw,1.18rem);line-height:1.68}
.byline{margin-top:22px;display:flex;flex-wrap:wrap;gap:6px 18px;font-family:'Source Code Pro',monospace;font-size:12.5px;letter-spacing:.04em;color:var(--dim)}
.byline span+span::before{content:"·";margin-right:18px;color:rgba(216,178,122,.55)}

/* ---------- guía: índice + texto ---------- */
.guide{display:grid;grid-template-columns:230px minmax(0,1fr);gap:clamp(30px,5vw,80px);padding:clamp(20px,3vw,36px) var(--edge) clamp(40px,6vw,80px);border-top:1px solid var(--line2)}
.toc{position:sticky;top:96px;align-self:start;padding-top:clamp(20px,2.4vw,30px)}
.toc .tl{font-family:'Source Code Pro',monospace;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--dim);margin-bottom:14px}
.toc ol{list-style:none;counter-reset:t;border-left:1px solid var(--line2)}
.toc li{counter-increment:t}
.toc a{display:block;padding:7px 0 7px 16px;margin-left:-1px;border-left:1px solid transparent;color:var(--sub);font-size:14px;line-height:1.4;transition:color .2s,border-color .2s}
.toc a:hover{color:var(--bone);border-left-color:var(--sand)}
.toc a:focus-visible{outline:2px solid var(--sand);outline-offset:2px;border-radius:3px}
@media(max-width:1020px){.guide{grid-template-columns:1fr}.toc{display:none}}

.prose{max-width:70ch;min-width:0}
.prose section{padding-top:clamp(20px,2.4vw,30px)}
.prose h2{font-family:'Cabinet Grotesk';font-weight:800;font-size:clamp(1.5rem,2.5vw,2.05rem);line-height:1.1;letter-spacing:-.022em;margin:clamp(22px,3vw,34px) 0 16px;scroll-margin-top:96px}
.prose section:first-child h2{margin-top:0}
.prose h3{font-family:'Cabinet Grotesk';font-weight:700;font-size:clamp(1.12rem,1.5vw,1.28rem);line-height:1.25;letter-spacing:-.01em;margin:26px 0 10px;color:var(--bone)}
.prose p{color:var(--sub);font-size:1.06rem;line-height:1.76;margin-bottom:16px}
.prose strong{color:var(--bone);font-weight:600}
.prose a{color:var(--sand);text-decoration:underline;text-decoration-thickness:1px;text-decoration-color:rgba(216,178,122,.38);text-underline-offset:3px;transition:text-decoration-color .2s}
.prose a:hover{text-decoration-color:var(--sand)}
.prose a:focus-visible{outline:2px solid var(--sand);outline-offset:2px;border-radius:3px}
.prose ul,.prose ol{margin:4px 0 18px;list-style:none}
.prose li{color:var(--sub);font-size:1.06rem;line-height:1.72;padding-left:22px;position:relative;margin-bottom:11px}
.prose ul>li::before{content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--sand)}
.prose ol{counter-reset:n}
.prose ol>li{counter-increment:n;padding-left:36px}
.prose ol>li::before{content:counter(n,decimal-leading-zero);position:absolute;left:0;top:.22em;font-family:'Source Code Pro',monospace;font-size:.8em;color:var(--sand);letter-spacing:.04em}

/* nota */
.note{margin:6px 0 20px;padding:20px 24px;border:1px solid var(--line2);border-radius:14px;background:var(--panel)}
.note .nl{font-family:'Source Code Pro',monospace;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--sand);margin-bottom:8px}
.note p{margin-bottom:0;font-size:1.02rem}

/* tabla */
.tbl{margin:8px 0 22px;overflow-x:auto;border:1px solid var(--line2);border-radius:14px;background:var(--panel);-webkit-overflow-scrolling:touch}
.tbl table{width:100%;min-width:560px;border-collapse:collapse;font-size:.97rem}
.tbl th{font-family:'Source Code Pro',monospace;font-weight:500;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);text-align:left;padding:15px 18px;border-bottom:1px solid var(--line)}
.tbl td{color:var(--sub);line-height:1.55;padding:14px 18px;vertical-align:top;border-bottom:1px solid var(--line2)}
.tbl tr:last-child td{border-bottom:0}
.tbl td:first-child{color:var(--bone);font-weight:600}
@media(max-width:640px){
  .tbl{overflow:visible;background:none;border:0;border-radius:0}
  .tbl table{min-width:0}
  .tbl thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  .tbl table,.tbl tbody,.tbl tr,.tbl td{display:block;width:100%}
  .tbl tr{border:1px solid var(--line2);border-radius:14px;background:var(--panel);padding:6px 18px 10px;margin-bottom:10px}
  .tbl td{padding:9px 0;border-bottom:1px solid var(--line2)}
  .tbl tr td:last-child{border-bottom:0}
  .tbl td:first-child{font-family:'Cabinet Grotesk';font-weight:700;font-size:1.08rem;padding-top:12px}
  .tbl td:not(:first-child)::before{content:attr(data-label);display:block;font-family:'Source Code Pro',monospace;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-bottom:4px}
}

/* resumen */
.summary{margin-top:clamp(30px,4vw,44px);padding:clamp(22px,2.8vw,32px);border:1px solid var(--line);border-radius:16px;background:var(--panel)}
.summary h2{margin:0 0 16px!important}
.summary ul{margin-bottom:0}
.summary li:last-child{margin-bottom:0}

/* preguntas */
.qa-list{margin-top:6px}
.qa-list .q{border-top:1px solid var(--line2);padding-top:4px}
.qa-list .q:last-child{border-bottom:1px solid var(--line2);padding-bottom:6px}
.qa-list h3{margin-top:18px}

/* relacionados */
.related{padding:clamp(40px,5vw,64px) var(--edge);border-top:1px solid var(--line2)}
.related .rh{font-family:'Source Code Pro',monospace;font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--sand);margin-bottom:22px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,250px),1fr));gap:14px}
.card{display:flex;flex-direction:column;gap:10px;padding:22px 22px 20px;border:1px solid var(--line2);border-radius:14px;background:var(--panel);transition:border-color .3s,transform .3s}
.card:hover{border-color:var(--line);transform:translateY(-2px)}
.card:focus-visible{outline:2px solid var(--sand);outline-offset:3px}
.card .k{font-family:'Source Code Pro',monospace;font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim)}
.card .t{font-family:'Cabinet Grotesk';font-weight:700;font-size:1.15rem;line-height:1.22;letter-spacing:-.01em;color:var(--bone)}
.card .d{color:var(--sub);font-size:.96rem;line-height:1.55}
.card .go{margin-top:auto;padding-top:6px;color:var(--sand);font-size:.95rem;font-weight:600}

/* hub */
.hub{padding:clamp(28px,3.4vw,44px) var(--edge) clamp(56px,7vw,96px);border-top:1px solid var(--line2)}
.hub .cards{grid-template-columns:repeat(auto-fill,minmax(min(100%,320px),1fr));gap:18px}
.hub .card{padding:clamp(26px,2.8vw,34px);gap:14px;min-height:280px}
.hub .card .n{font-family:'Source Code Pro',monospace;font-size:12.5px;letter-spacing:.2em;color:var(--sand)}
.hub .card .t{font-family:'Cabinet Grotesk';font-weight:800;font-size:clamp(1.35rem,2vw,1.6rem);line-height:1.12;letter-spacing:-.02em}
.hub .card .d{font-size:1.01rem}
.hub .about{margin-top:clamp(40px,5vw,60px);max-width:68ch;color:var(--sub);font-size:1.04rem;line-height:1.72}
.hub .about strong{color:var(--bone);font-weight:600}

/* ---------- CTA ---------- */
.cierre{text-align:center;position:relative;overflow:hidden;border-top:1px solid var(--line2)}
.cierre .inner{padding:clamp(56px,6.5vw,92px) var(--edge) clamp(64px,8vw,110px);position:relative;z-index:2}
.cierre::before{content:"";position:absolute;left:50%;top:0;width:80vw;max-width:740px;aspect-ratio:2/1;transform:translate(-50%,-44%);border-radius:50%;background:radial-gradient(closest-side,rgba(216,178,122,.13),transparent 70%);filter:blur(8px)}
.cierre .ek{font-family:'Source Code Pro',monospace;font-size:12.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--sand);margin-bottom:18px}
.cierre h2{font-family:'Cabinet Grotesk';font-weight:800;font-size:clamp(2rem,4.4vw,3.3rem);letter-spacing:-.03em;max-width:20ch;margin:0 auto}
.cierre .sub{margin:18px auto 0;color:var(--sub);font-size:1.06rem;line-height:1.6;max-width:52ch}
.cierre .cta{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
@media(max-width:520px){.cierre .cta{flex-direction:column;align-items:stretch}.cierre .cta .btn{width:100%;justify-content:center}}

/* ---------- footer ---------- */
footer{background:var(--bg2);border-top:1px solid var(--line2)}
.foot{padding:clamp(54px,7vw,74px) var(--edge) 40px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
@media(max-width:860px){.foot{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:520px){.foot{grid-template-columns:1fr;gap:30px}}
.foot .brand b{font-size:21px}
.foot .tg{margin-top:16px;color:var(--sub);font-size:14.5px;line-height:1.6;max-width:30ch}
.foot .loc{margin-top:18px;font-family:'Source Code Pro',monospace;font-size:12.5px;color:var(--dim);letter-spacing:.05em}
.fcol h5{font-family:'Source Code Pro',monospace;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);margin-bottom:18px}
.fcol a{display:block;color:var(--sub);font-size:15px;margin-bottom:12px;transition:color .2s}.fcol a:hover{color:var(--bone)}
.foot-bottom{padding:22px var(--edge);border-top:1px solid var(--line2);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--dim);align-items:center}
.foot-bottom .legal-links a{color:var(--dim);transition:color .2s}.foot-bottom .legal-links a:hover{color:var(--bone)}