:root {
  --paper: #FFFFFF;
  --ink: #0B0D12;
  --muted: #5B6472;
  --border: #E4E7EC;
  --brass: #0F62FE;
  --accent-mint: #00D9B5;
  --serif: "Space Grotesk", sans-serif;
  --sans: "Inter", sans-serif;
  --mono: "JetBrains Mono", monospace;
  --radius: 10px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: var(--sans); color: var(--ink); background: var(--paper); line-height: 1.6; }
h1, h2, h3 { font-family: var(--serif); font-weight: 700; letter-spacing: -0.01em; }
a { color: var(--brass); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,0.85); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.header-inner { max-width: 1080px; margin: 0 auto; padding: 14px 20px; display: flex; align-items: center; justify-content: space-between; }
.brand { font-family: var(--serif); font-weight: 700; font-size: 1.3rem; color: var(--ink); }
.main-nav { display: flex; gap: 18px; flex-wrap: wrap; }
.main-nav a { color: var(--muted); font-size: 0.92rem; font-weight: 500; }
.main-nav a.active, .main-nav a:hover { color: var(--brass); }

main { max-width: 780px; margin: 0 auto; padding: 40px 20px 60px; }

.hero { max-width: 780px; margin: 0 auto 32px; text-align: center; }
.hero h1 { font-size: 2.1rem; margin-bottom: 10px; }
.hero p { color: var(--muted); font-size: 1.05rem; }

.calc-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 40px; }
.calc-card, .glosario-card { display: block; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; transition: border-color .15s, transform .15s; }
.calc-card:hover, .glosario-card:hover { border-color: var(--brass); transform: translateY(-2px); text-decoration: none; }
.calc-card h2, .glosario-card h2 { font-size: 1.05rem; margin: 0 0 6px; color: var(--ink); }
.calc-card p, .glosario-card p { margin: 0; color: var(--muted); font-size: 0.9rem; }

.glosario-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }

.calc-form { display: flex; flex-direction: column; gap: 14px; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin: 24px 0; }
.calc-form label { display: flex; flex-direction: column; gap: 6px; font-size: 0.9rem; font-weight: 500; color: var(--muted); }
.calc-form input { font-family: var(--mono); font-size: 1rem; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; }
.calc-form button { background: var(--brass); color: white; border: none; padding: 12px; border-radius: 8px; font-weight: 600; cursor: pointer; font-size: 0.95rem; }
.calc-form button:hover { opacity: 0.9; }

.resultado { font-family: var(--mono); background: #F5F7FA; border-radius: var(--radius); padding: 20px; margin-bottom: 30px; }
.resultado p { margin: 6px 0; }
.resultado strong { color: var(--accent-mint); }

.content-block { margin: 30px 0; }
.content-block table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.content-block th, .content-block td { border: 1px solid var(--border); padding: 10px; text-align: left; font-size: 0.92rem; }
.content-block th { background: #F5F7FA; }

.step-list { counter-reset: step; list-style: none; padding: 0; }
.step-list li { counter-increment: step; position: relative; padding-left: 46px; margin-bottom: 18px; }
.step-list li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 32px; height: 32px; background: var(--brass); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--mono); font-weight: 600; }

.breadcrumb { font-size: 0.85rem; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--muted); }

.faq-list { margin: 30px 0; }
.faq-item { border-bottom: 1px solid var(--border); padding: 14px 0; }
.faq-item summary { cursor: pointer; font-weight: 600; list-style: none; position: relative; padding-right: 24px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 0; top: 0; color: var(--brass); }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { color: var(--muted); margin-top: 10px; }

.related-block { margin: 30px 0; }
.related-row { display: flex; flex-wrap: wrap; gap: 8px; }
.related-chip { border: 1px solid var(--border); border-radius: 999px; padding: 6px 14px; font-size: 0.85rem; }
.related-chip-glos { border-color: var(--accent-mint); }

.site-footer { border-top: 1px solid var(--border); margin-top: 40px; }
.footer-inner { max-width: 1080px; margin: 0 auto; padding: 24px 20px; font-size: 0.82rem; color: var(--muted); }
.footer-inner a { color: var(--muted); }