:root{color-scheme:light dark;--paper:#f2f2f2;--deep:#e7e7e7;--plate:#fff;--ink:#16232b;--text:#34444b;--muted:#5a696e;--line:#cbd1d3;--action:#4646be;--action-deep:#30308f;--max:1180px;--measure:760px;--sans:"Eikos Sans",Inter,system-ui,sans-serif;--serif:"Eikos Serif",Georgia,serif;--mono:"Eikos Mono",ui-monospace,monospace}
@font-face{font-family:"Eikos Sans";font-style:normal;font-weight:400 700;font-display:swap;src:url('/assets/fonts/inter-latin.woff2') format('woff2')}@font-face{font-family:"Eikos Serif";font-style:normal;font-weight:400 600;font-display:swap;src:url('/assets/fonts/source-serif-latin.woff2') format('woff2')}@font-face{font-family:"Eikos Mono";font-style:normal;font-weight:400 600;font-display:swap;src:url('/assets/fonts/jetbrains-mono-latin.woff2') format('woff2')}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.58}img{max-width:100%;height:auto}a{color:var(--action-deep);text-underline-offset:.18em}a:hover{text-decoration-thickness:2px}.skip{position:absolute;left:-9999px}.skip:focus{left:1rem;top:1rem;z-index:99;background:var(--plate);padding:.7rem 1rem;border:2px solid var(--action)}
.site-header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 94%,transparent);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.nav-wrap{max-width:var(--max);margin:auto;min-height:70px;padding:.65rem 1.25rem;display:flex;align-items:center;gap:1.4rem}.brand{display:flex;align-items:center;gap:.68rem;color:var(--ink);text-decoration:none;font-weight:700;letter-spacing:.02em}.brand img{width:38px;height:38px;border-radius:8px}.brand small{display:block;color:var(--muted);font-size:.68rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase}.nav-toggle{display:none;margin-left:auto;background:transparent;border:1px solid var(--line);padding:.55rem .7rem;color:var(--ink)}.site-nav{margin-left:auto;display:flex;align-items:center;gap:1.05rem;font-size:.9rem}.site-nav a{text-decoration:none;color:var(--text)}.site-nav a[aria-current="page"]{color:var(--action);font-weight:700}.nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:.7rem 1rem;border:1px solid var(--action);background:var(--action);color:#fff;text-decoration:none;font-weight:700;box-shadow:3px 3px 0 var(--ink)}.button.secondary{background:transparent;color:var(--action-deep);box-shadow:none}.button:hover{transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--ink)}
main{overflow:hidden}.shell{max-width:var(--max);margin:auto;padding:0 1.25rem}.hero{padding:6rem 0 4.5rem;min-height:650px;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(320px,.92fr);align-items:center;gap:4rem}.eyebrow{font:600 .73rem/1.2 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--action)}h1,h2,h3{line-height:1.08;margin-top:0}h1{font-family:var(--serif);font-size:clamp(3.1rem,7vw,6.7rem);letter-spacing:-.055em;margin-bottom:1.4rem}h2{font-family:var(--serif);font-size:clamp(2.1rem,4vw,3.8rem);letter-spacing:-.04em}h3{font-size:1.15rem}.lead{font-family:var(--serif);font-size:clamp(1.2rem,2vw,1.55rem);color:var(--text);max-width:700px}.actions{display:flex;flex-wrap:wrap;gap:.85rem;margin-top:2rem}.instrument{position:relative;background:var(--plate);border:1px solid var(--ink);padding:1.1rem;box-shadow:12px 12px 0 var(--deep)}.instrument:before{content:"ANÁLISIS / 01";display:block;font:600 .68rem var(--mono);letter-spacing:.12em;color:var(--muted);padding-bottom:.8rem;border-bottom:1px solid var(--line)}.estimate{padding:2rem 0;border-bottom:1px solid var(--line)}.estimate strong{display:block;font:600 clamp(2.8rem,7vw,5.2rem)/1 var(--mono);letter-spacing:-.08em}.estimate span{font-family:var(--mono);color:var(--muted)}.interval{height:72px;position:relative;margin:1.2rem 0}.interval:before{content:"";position:absolute;left:8%;right:8%;top:35px;border-top:2px solid var(--ink)}.interval:after{content:"";position:absolute;left:28%;right:20%;top:27px;height:16px;background:var(--action)}.tick{position:absolute;left:57%;top:17px;width:3px;height:36px;background:var(--ink)}.instrument-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}.instrument-grid div{background:var(--plate);padding:.8rem}.instrument-grid b{display:block;font:600 1.15rem var(--mono)}.instrument-grid small{color:var(--muted)}
.stats{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);background:var(--line);gap:1px;margin-bottom:5rem}.stat{background:var(--plate);padding:1.25rem}.stat strong{display:block;font:600 clamp(1.45rem,3vw,2.4rem) var(--mono);letter-spacing:-.05em}.stat span{font-size:.82rem;color:var(--muted)}section{padding:5.5rem 0}.section-head{max-width:760px;margin-bottom:2.4rem}.section-head p{font-family:var(--serif);font-size:1.18rem;color:var(--text)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}.card{background:var(--plate);border:1px solid var(--line);padding:1.45rem;min-height:210px}.card .num{font:600 .72rem var(--mono);color:var(--action);letter-spacing:.1em}.card p{color:var(--text)}.card a.stretch{display:inline-block;margin-top:.6rem;font-weight:700}.dark{background:#111a1f;color:#f4f6f7}.dark .section-head p,.dark .card p{color:#bdc7ca}.dark .card{background:#172329;border-color:#344249}.dark a{color:#c2c2ff}.dark .eyebrow{color:#a9a9ff}
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.guide-tools{display:flex;gap:.7rem;align-items:center;margin:1.5rem 0}.guide-tools input{width:min(100%,520px);min-height:46px;padding:.75rem 1rem;border:1px solid var(--ink);background:var(--plate);color:var(--ink);font:inherit}.area-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}.area-card{background:var(--plate);border:1px solid var(--line);padding:1.3rem;text-decoration:none;color:var(--ink)}.area-card:hover{border-color:var(--action)}.area-card strong{display:block;font-family:var(--serif);font-size:1.45rem}.area-card span{color:var(--muted)}.guide-list{list-style:none;margin:0;padding:0}.guide-list li{border-top:1px solid var(--line);padding:1rem 0}.guide-list a{font-family:var(--serif);font-size:1.2rem;font-weight:600;text-decoration:none}.guide-meta{font:.72rem var(--mono);color:var(--muted);margin-top:.3rem}.guide-status{display:inline-block;border:1px solid var(--line);background:var(--plate);padding:.55rem .75rem;font:600 .73rem var(--mono);color:var(--action-deep)}.guide-introduction{max-width:900px}.guide-introduction>section{padding:2.7rem 0;border-top:1px solid var(--line)}.guide-introduction h2,.guide-access h2{font-size:clamp(1.8rem,4vw,3rem)}.intro-copy{max-width:760px;font:1.2rem/1.75 var(--serif);color:var(--text)}.topic-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem 2rem;padding-left:1.2rem}.topic-list li{padding:.2rem 0}.tag-list{display:flex;flex-wrap:wrap;gap:.55rem;list-style:none;padding:0}.tag-list li{border:1px solid var(--line);background:var(--plate);padding:.45rem .7rem;font:.78rem var(--mono);text-transform:capitalize}.math-example{margin:1.5rem 0 0}.math-render{overflow:auto;padding:1.5rem;background:var(--plate);border:1px solid var(--line);font-size:clamp(.9rem,2vw,1.1rem)}.math-example details{border:1px solid var(--line);border-top:0;padding:.75rem 1rem}.math-example summary{cursor:pointer;font-weight:700}.math-example code{display:block;overflow:auto;margin-top:.7rem;white-space:pre-wrap;font:.82rem/1.55 var(--mono)}.guide-access{margin:3rem 0 1rem;padding:2rem;background:var(--deep);border:1px solid var(--line)}
.faq details{border-top:1px solid var(--line);padding:1rem 0}.faq summary{cursor:pointer;font-weight:700;font-size:1.08rem}.faq p{max-width:760px;color:var(--text)}table{border-collapse:collapse;width:100%;background:var(--plate)}th,td{text-align:left;border:1px solid var(--line);padding:.8rem;vertical-align:top}th{font-family:var(--mono);font-size:.75rem;text-transform:uppercase}.site-footer{border-top:1px solid var(--line);margin-top:5rem}.footer-grid{max-width:var(--max);margin:auto;padding:3rem 1.25rem;display:grid;grid-template-columns:2fr repeat(3,1fr);gap:2rem}.footer-grid h2{font:700 1.1rem var(--sans)}.footer-grid a{display:block;margin:.4rem 0;color:var(--text)}.footer-bottom{max-width:var(--max);margin:auto;padding:1rem 1.25rem 2rem;border-top:1px solid var(--line);font-size:.78rem;color:var(--muted);display:flex;justify-content:space-between;gap:1rem}
@media(prefers-color-scheme:dark){:root{--paper:#111a1f;--deep:#182329;--plate:#1b282e;--ink:#eef2f3;--text:#c6d0d3;--muted:#99a8ad;--line:#39484e;--action:#9c9cff;--action-deep:#c2c2ff}.nav-cta,.button{color:#111a1f}.shot{box-shadow:8px 8px 0 #090e11}}
@media(max-width:900px){.nav-toggle{display:block}.site-nav{display:none;position:absolute;left:0;right:0;top:70px;background:var(--paper);border-bottom:1px solid var(--line);padding:1rem 1.25rem;flex-direction:column;align-items:stretch}.site-nav.open{display:flex}.hero,.two-col,.guide-layout{grid-template-columns:1fr}.hero{padding-top:3.5rem;gap:2.5rem}.stats{grid-template-columns:repeat(2,1fr)}.grid{grid-template-columns:1fr 1fr}.toc{position:static;max-height:none}.footer-grid{grid-template-columns:1fr 1fr}.site-header{position:relative}}
@media(max-width:580px){h1{font-size:3.25rem}.grid,.feature-list,.area-grid,.topic-list{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.instrument-grid{grid-template-columns:1fr}.hero{min-height:auto}.nav-wrap,.shell{padding-inline:1rem}section{padding:4rem 0}.math-render{padding:1rem}.guide-access{padding:1.25rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}