/* Tabramo — hoja de estilos común */

:root {
  --bg: #eeece8;
  --bg-alt: #dedbd5;
  --dark: #232220;
  --ink: #191817;
  --muted: #6b6862;
  --accent: #8a6a12;
  --accent-2: #4a6470;
  --accent-light: #d4b055;
  --rule: #cfccc5;
  --rule-dark: #3d3b37;
  --r: 72px;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.8;
  overflow-x: hidden;
}

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

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

a:hover { text-decoration-thickness: 2px; }

a:focus-visible,
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- retícula de 12 columnas ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: 28px;
  max-width: 1240px;
  margin: 0 auto;
  padding-inline: clamp(20px, 4vw, 56px);
}

.rail {
  grid-column: 1 / 4;
  border-right: 1px solid var(--accent);
  padding-right: 24px;
  min-height: 100%;
}

.col-main { grid-column: 4 / 10; }
.head-rule-wrap { grid-column: 1 / 13; }
.col-wide { grid-column: 4 / 12; }

.band { padding-block: var(--r); }
.band--alt { background: var(--bg-alt); }
.band--tight { padding-block: calc(var(--r) / 2) var(--r); }

.band--dark {
  background: var(--dark);
  color: var(--bg);
}

.band--dark .rail { border-right-color: var(--accent-light); }
.band--dark .guide { background: var(--rule-dark); }
.band--dark .caption,
.band--dark .lead-note { color: #a9a49b; }
.band--dark .sec-num { color: var(--accent-light); }
.band--dark a { color: var(--accent-light); }
.band--dark a:focus-visible { outline-color: var(--accent-light); }

/* ---------- tipografía ---------- */

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 400;
  color: inherit;
}

h1 {
  font-size: clamp(2.4rem, 5.6vw, 4.1rem);
  line-height: 1.1;
  margin: 0 0 calc(var(--r) / 2);
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.45rem, 2.4vw, 1.85rem);
  line-height: 1.3;
  margin: 0 0 18px;
}

h3 {
  font-size: 1.08rem;
  line-height: 1.45;
  margin: 32px 0 10px;
}

p { margin: 0 0 20px; max-width: 72ch; }
p:last-child { margin-bottom: 0; }

.lead {
  font-size: 1.12rem;
  line-height: 1.75;
  padding-block: 20px;
}

.caption {
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  font-family: var(--sans);
  letter-spacing: 0.02em;
}

.lead-note {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.initial {
  font-family: var(--serif);
  font-size: clamp(4.4rem, 11vw, 8.2rem);
  line-height: 0.86;
  color: var(--accent);
  display: block;
  text-align: right;
}

.sec-num {
  font-family: var(--serif);
  font-size: 1.5rem;
  color: var(--accent-2);
  display: block;
  text-align: right;
  letter-spacing: 0.06em;
}

.sec-label {
  display: block;
  text-align: right;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 8px;
}

.guide {
  height: 1px;
  background: var(--rule);
  border: 0;
  margin: 0;
}

.guide--head { margin: 0 0 26px; }

/* ---------- listas ---------- */

ul, ol { margin: 0 0 22px; padding-left: 0; list-style: none; }

ul li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 10px;
}

ul li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
}

ol { counter-reset: step; }

ol li {
  position: relative;
  padding-left: 34px;
  margin-bottom: 10px;
  counter-increment: step;
}

ol li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  font-family: var(--serif);
  color: var(--accent-2);
  font-size: 0.95rem;
}

.checklist {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding-block: 22px;
  margin-block: 28px;
}

.band--dark .checklist { border-color: var(--rule-dark); }

/* ---------- cabecera y navegación ---------- */

.site-head { padding-block: 28px 0; }

.site-head .grid { row-gap: 14px; align-items: baseline; }

.brand {
  grid-column: 1 / 4;
  font-family: var(--serif);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink);
}

.brand:hover { color: var(--accent); }

.site-nav { grid-column: 4 / 13; }

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 0;
  margin: 0;
}

.site-nav li { padding: 0; margin: 0; }
.site-nav li::before { content: none; }

.site-nav li + li::before {
  content: "/";
  color: var(--accent-2);
  padding-inline: 12px;
  position: static;
}

.site-nav a {
  font-size: 15px;
  color: var(--ink);
  text-decoration: none;
  padding-block: 4px;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.head-rule { margin-top: 24px; }

/* ---------- portada ---------- */

.hero { padding-block: calc(var(--r) * 0.9) calc(var(--r) / 2); }

.hero .grid { row-gap: 0; }

.hero-rail {
  grid-column: 1 / 4;
  grid-row: 1 / span 2;
  border-right: 1px solid var(--accent);
  padding-right: 24px;
}

.hero h1 { grid-column: 4 / 12; }

.hero-lead { grid-column: 4 / 10; }

.hero-fig {
  grid-column: 1 / 13;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: 28px;
  margin: var(--r) 0 0;
}

.hero-fig img { grid-column: 6 / 13; width: 100%; }

.hero-fig figcaption {
  grid-column: 1 / 4;
  border-right: 1px solid var(--accent-2);
  padding-right: 24px;
  text-align: right;
}

/* ---------- sección oscura con imagen de detalle ---------- */

.detail-wrap {
  grid-column: 4 / 13;
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  column-gap: 28px;
  row-gap: 32px;
  align-items: start;
  margin-top: 40px;
}

.detail-fig { grid-column: 1 / 5; margin: 0; }
.detail-fig img { width: 100%; }
.detail-fig figcaption { margin-top: 12px; }
.detail-text { grid-column: 5 / 10; }

/* ---------- pie ---------- */

.site-foot {
  background: var(--bg-alt);
  border-top: 1px solid var(--rule);
  padding-block: calc(var(--r) / 1.5);
  margin-top: var(--r);
}

.site-foot .grid { row-gap: 22px; align-items: start; }

.foot-rail {
  grid-column: 1 / 4;
  border-right: 1px solid var(--accent);
  padding-right: 24px;
}

.foot-name {
  font-family: var(--serif);
  font-size: 1.2rem;
  display: block;
  text-align: right;
}

.foot-nav { grid-column: 4 / 10; }

.foot-nav ul { display: flex; flex-wrap: wrap; margin: 0 0 12px; }
.foot-nav li { padding: 0; margin: 0; }
.foot-nav li::before { content: none; }

.foot-nav li + li::before {
  content: "·";
  color: var(--accent);
  padding-inline: 10px;
  position: static;
}

.foot-nav a { font-size: 15px; color: var(--ink); text-decoration: none; }
.foot-nav a:hover { color: var(--accent); text-decoration: underline; }

.foot-mail { grid-column: 10 / 13; text-align: right; }
.foot-mail a { word-break: break-word; }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  :root { --r: 44px; }

  body { font-size: 16px; line-height: 1.75; }

  .grid { column-gap: 0; row-gap: 0; }

  .rail,
  .hero-rail,
  .foot-rail,
  .col-main,
  .col-wide,
  .brand,
  .site-nav,
  .foot-nav,
  .foot-mail,
  .head-rule-wrap,
  .hero h1,
  .hero-lead,
  .hero-fig,
  .detail-wrap {
    grid-column: 1 / 13;
  }

  .rail,
  .hero-rail,
  .foot-rail {
    grid-row: auto;
    border-right: 0;
    border-left: 1px solid var(--accent);
    padding-right: 0;
    padding-left: 16px;
    margin-bottom: 20px;
    min-height: 0;
  }

  .band--dark .rail { border-left-color: var(--accent-light); }

  .initial,
  .sec-num,
  .sec-label,
  .foot-name { text-align: left; }

  .initial { font-size: 3.6rem; line-height: 1; }

  .hero-fig,
  .detail-wrap {
    display: block;
    margin-top: 32px;
  }

  .hero-fig figcaption {
    border-right: 0;
    border-left: 1px solid var(--accent-2);
    padding-right: 0;
    padding-left: 16px;
    text-align: left;
    margin-top: 14px;
  }

  .detail-fig { margin-bottom: 28px; }
  .detail-fig img { max-width: 420px; }

  .foot-mail { text-align: left; }

  .site-nav ul { gap: 2px 0; }
  .site-nav li + li::before { padding-inline: 9px; }
}

@media (max-width: 520px) {
  h1 { font-size: 2.1rem; }
  .lead { font-size: 1rem; }
}