/* ===========================================================
   Paso a Paso Finanzas — sistema de diseño
   Paleta: verde-tinta + oro apagado sobre papel gris-verdoso
   =========================================================== */

:root{
  --bg: #EFF2EA;
  --paper: #FBFBF8;
  --ink: #15251C;
  --ink-soft: #3A493F;
  --green: #2F5D46;
  --green-deep: #1E3E30;
  --gold: #B8874B;
  --gold-soft: #E7D3B4;
  --line: #D7DDCF;
  --radius: 4px;
  --max: 1080px;
  --step: 8px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'Source Sans 3', 'Inter', -apple-system, sans-serif;
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:'Fraunces', Georgia, serif;
  color:var(--ink);
  line-height:1.15;
  margin:0 0 .5em;
  font-weight:600;
  letter-spacing:-0.01em;
}
h1{font-size:clamp(2.1rem,4.5vw,3.4rem); font-weight:560;}
h2{font-size:clamp(1.5rem,3vw,2.1rem);}
h3{font-size:1.25rem;}
p{margin:0 0 1.1em;}
a{color:var(--green-deep);}
a:hover{color:var(--gold);}
.serif-num{font-family:'Fraunces', serif; font-variant-numeric: oldstyle-nums;}

img{max-width:100%;display:block;}

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--gold);
  outline-offset:3px;
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; scroll-behavior:auto !important;}
}

.wrap{max-width:var(--max); margin:0 auto; padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  border-bottom:1px solid var(--line);
  background:var(--paper);
  position:sticky; top:0; z-index:50;
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  padding-top:18px; padding-bottom:18px;
}
.brand{
  display:flex; align-items:baseline; gap:10px;
  text-decoration:none; color:var(--ink);
}
.brand-mark{
  font-family:'Fraunces', serif; font-weight:700; font-size:1.35rem;
  color:var(--green-deep);
}
.brand-tag{
  font-size:.72rem; letter-spacing:.08em; text-transform:uppercase;
  color:var(--ink-soft);
}
nav.main-nav ul{
  list-style:none; display:flex; gap:28px; margin:0; padding:0;
}
nav.main-nav a{
  text-decoration:none; color:var(--ink-soft); font-size:.95rem;
  font-weight:600; padding-bottom:3px; border-bottom:2px solid transparent;
}
nav.main-nav a:hover, nav.main-nav a.active{
  color:var(--green-deep); border-color:var(--gold);
}
.nav-toggle{display:none;}

@media (max-width: 720px){
  nav.main-nav ul{gap:16px; flex-wrap:wrap; justify-content:flex-end;}
  nav.main-nav a{font-size:.85rem;}
}

/* ---------- Hero / staircase signature ---------- */
.hero{
  padding:64px 0 40px;
  background:
    radial-gradient(ellipse at top right, rgba(184,135,75,0.10), transparent 55%),
    var(--bg);
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid; grid-template-columns:1.15fr .85fr; gap:48px; align-items:center;
}
@media (max-width:860px){ .hero-grid{grid-template-columns:1fr;} }

.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:.78rem; letter-spacing:.09em; text-transform:uppercase;
  color:var(--green-deep); font-weight:700; margin-bottom:14px;
}
.eyebrow::before{
  content:""; width:18px; height:2px; background:var(--gold);
  display:inline-block;
}
.hero p.lead{
  font-size:1.15rem; color:var(--ink-soft); max-width:46ch;
}
.hero-ctas{display:flex; gap:14px; margin-top:22px; flex-wrap:wrap;}

.btn{
  display:inline-block; padding:12px 22px; border-radius:var(--radius);
  text-decoration:none; font-weight:700; font-size:.95rem;
  border:1px solid transparent; transition:transform .15s ease, background .15s ease;
}
.btn-primary{background:var(--green-deep); color:#fff;}
.btn-primary:hover{background:var(--green); color:#fff; transform:translateY(-1px);}
.btn-ghost{border-color:var(--ink); color:var(--ink);}
.btn-ghost:hover{border-color:var(--gold); color:var(--gold);}

/* staircase svg */
.staircase{width:100%; height:auto;}
.staircase .bar{transform-origin:bottom; animation:rise .7s ease-out both;}
.staircase .bar:nth-child(1){animation-delay:.05s}
.staircase .bar:nth-child(2){animation-delay:.18s}
.staircase .bar:nth-child(3){animation-delay:.31s}
.staircase .bar:nth-child(4){animation-delay:.44s}
.staircase .bar:nth-child(5){animation-delay:.57s}
@keyframes rise{
  from{transform:scaleY(0);} to{transform:scaleY(1);}
}
.staircase .dot{animation:pop .4s ease-out .75s both;}
@keyframes pop{ from{opacity:0; transform:translateY(6px);} to{opacity:1; transform:translateY(0);} }

/* ---------- Sections ---------- */
.section{padding:56px 0;}
.section-head{
  display:flex; align-items:flex-end; justify-content:space-between; gap:20px;
  margin-bottom:28px; border-bottom:1px solid var(--line); padding-bottom:14px;
}
.section-head p{margin:0; color:var(--ink-soft); font-size:.95rem;}

.step-divider{
  display:flex; align-items:center; gap:14px; margin:0 0 22px;
}
.step-divider .step-bars{display:flex; align-items:flex-end; gap:3px; height:16px;}
.step-divider .step-bars span{width:4px; background:var(--gold); display:block;}
.step-divider .step-bars span:nth-child(1){height:6px;}
.step-divider .step-bars span:nth-child(2){height:10px;}
.step-divider .step-bars span:nth-child(3){height:16px;}
.step-divider small{
  text-transform:uppercase; letter-spacing:.08em; font-size:.72rem; color:var(--ink-soft); font-weight:700;
}

/* article cards grid */
.grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:22px;
}
@media (max-width:860px){ .grid{grid-template-columns:repeat(2,1fr);} }
@media (max-width:600px){ .grid{grid-template-columns:1fr;} }

.card{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius);
  padding:22px; display:flex; flex-direction:column; gap:10px;
  text-decoration:none; color:var(--ink);
  transition:border-color .15s ease, transform .15s ease;
}
.card:hover{border-color:var(--gold); transform:translateY(-2px);}
.card .cat{
  font-size:.72rem; letter-spacing:.08em; text-transform:uppercase;
  color:var(--green-deep); font-weight:700;
}
.card h3{margin:0;}
.card p{color:var(--ink-soft); font-size:.93rem; margin:0;}
.card .read{
  margin-top:auto; font-size:.85rem; font-weight:700; color:var(--gold);
}

/* pull quote / callout */
.callout{
  border-left:3px solid var(--gold);
  background:var(--paper);
  padding:18px 22px; margin:28px 0; border-radius:0 var(--radius) var(--radius) 0;
}
.callout p:last-child{margin-bottom:0;}
.callout.warn{border-left-color:var(--green-deep);}

/* numbered step list for article bodies */
ol.steps{list-style:none; margin:0 0 1.5em; padding:0; counter-reset:step;}
ol.steps li{
  counter-increment:step; position:relative; padding-left:44px; margin-bottom:18px;
}
ol.steps li::before{
  content:counter(step);
  font-family:'Fraunces', serif; font-weight:700; color:var(--gold);
  position:absolute; left:0; top:-2px; font-size:1.3rem;
}

table.simple{width:100%; border-collapse:collapse; margin:1.5em 0;}
table.simple th, table.simple td{
  text-align:left; padding:10px 12px; border-bottom:1px solid var(--line); font-size:.93rem;
}
table.simple th{font-family:'Fraunces',serif; color:var(--green-deep);}

/* ---------- Article layout ---------- */
.article-hero{padding:44px 0 8px; border-bottom:1px solid var(--line);}
.article-meta{
  display:flex; gap:16px; flex-wrap:wrap; color:var(--ink-soft); font-size:.85rem; margin-bottom:10px;
}
.article-body{
  max-width:70ch; margin:0 auto; padding:40px 24px 20px;
}
.article-body h2{margin-top:1.6em;}
.toc{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius);
  padding:18px 22px; margin:24px auto; max-width:70ch;
}
.toc p{margin:0 0 8px; font-weight:700; font-family:'Fraunces',serif;}
.toc ul{margin:0; padding-left:20px;}
.toc a{font-size:.93rem;}

.author-box{
  max-width:70ch; margin:40px auto; padding:20px; border-top:1px solid var(--line);
  display:flex; gap:14px; align-items:flex-start; font-size:.9rem; color:var(--ink-soft);
}
.author-box strong{color:var(--ink); font-family:'Fraunces',serif;}

/* ---------- Newsletter / CTA band ---------- */
.cta-band{
  background:var(--green-deep); color:#fff; padding:52px 0; text-align:center;
}
.cta-band h2{color:#fff;}
.cta-band p{color:#D9E4DC; max-width:52ch; margin:0 auto 22px;}
.cta-band .btn-primary{background:var(--gold); color:var(--ink);}
.cta-band .btn-primary:hover{background:var(--gold-soft);}

/* ---------- Footer ---------- */
footer.site-footer{
  border-top:1px solid var(--line); padding:40px 0 30px; background:var(--paper);
  font-size:.88rem; color:var(--ink-soft);
}
.footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:30px; margin-bottom:26px;}
@media (max-width:700px){.footer-grid{grid-template-columns:1fr;}}
.footer-grid h4{font-family:'Fraunces',serif; color:var(--ink); font-size:.95rem; margin-bottom:10px;}
.footer-grid ul{list-style:none; margin:0; padding:0;}
.footer-grid li{margin-bottom:7px;}
.footer-grid a{color:var(--ink-soft); text-decoration:none;}
.footer-grid a:hover{color:var(--gold);}
.footer-bottom{
  border-top:1px solid var(--line); padding-top:18px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
}
.disclaimer-note{
  font-size:.8rem; color:var(--ink-soft); max-width:80ch; margin:0 auto 24px; text-align:center;
}

.breadcrumb{font-size:.82rem; color:var(--ink-soft); margin-bottom:10px;}
.breadcrumb a{color:var(--ink-soft); text-decoration:none;}
.breadcrumb a:hover{color:var(--gold);}

.article-byline{margin:.75rem 0 0;font-size:.92rem;opacity:.8}
.sources-box{margin:3rem auto 0;padding:1.25rem;border:1px solid rgba(0,0,0,.12);border-radius:12px}
.sources-box h2{margin-top:0}
.sources-box .small-note{font-size:.9rem;opacity:.75}