/* Vigobrubre — hoja pautada / margen reglado */

:root {
  --bg: #eef1e8;
  --bg-alt: #e2e7dc;
  --bg-dark: #2c3a2c;
  --tx: #1f2620;
  --tx2: #6d7468;
  --tx-inv: #eef1e8;
  --ac: #5f7a46;
  --ac2: #b4655a;
  --rule: rgba(31, 38, 32, 0.16);
  --rule-strong: rgba(95, 122, 70, 0.45);
  --r: 72px;
  --serif: Georgia, "Times New Roman", serif;
  --sans: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--tx);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.9;
  overflow-x: hidden;
}

/* ---------- retícula de 12 columnas con margen reglado ---------- */

.ruled {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 22px;
  row-gap: 0;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(18px, 4vw, 48px);
}

.margin {
  grid-column: 1 / 4;
  grid-row: 1 / span 40;
  border-right: 1px solid var(--rule-strong);
  padding-right: 20px;
  text-align: right;
}

.tcol { grid-column: 4 / 10; }
.wcol { grid-column: 4 / 12; }

.band { padding: var(--r) 0; }
.band--alt { background: var(--bg-alt); }

.band--dark {
  background: var(--bg-dark);
  color: var(--tx-inv);
  --rule: rgba(238, 241, 232, 0.24);
  --rule-strong: rgba(238, 241, 232, 0.4);
  --tx2: #b9c2b2;
}

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

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: 0.005em;
}

h1 {
  font-size: clamp(30px, 4.3vw, 48px);
  margin: 0;
  max-width: 22ch;
}

h2 {
  font-size: clamp(23px, 2.5vw, 30px);
  margin: 0;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}

h3 {
  font-size: 20px;
  margin: 40px 0 8px;
}

p { margin: 0 0 26px; }
p:last-child { margin-bottom: 0; }

h2 + p { margin-top: 28px; }

a {
  color: var(--ac);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

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

a:focus-visible {
  outline: 2px solid var(--ac);
  outline-offset: 3px;
  border-radius: 1px;
}

.band--dark a { color: #b7cda0; }

.cap {
  font-size: 14px;
  line-height: 1.55;
  color: var(--tx2);
  margin: 0;
}

.num {
  display: block;
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.16em;
  color: var(--ac2);
  line-height: 1;
  padding-top: 12px;
}

.initial {
  display: block;
  font-family: var(--serif);
  font-size: clamp(46px, 6vw, 74px);
  line-height: 0.9;
  color: var(--ac);
}

/* ---------- cabecera ---------- */

.site-head {
  padding: 26px 0 22px;
  border-bottom: 1px solid var(--rule);
}

.head-body { grid-column: 4 / 13; }

.brand {
  font-family: var(--serif);
  font-size: 21px;
  letter-spacing: 0.05em;
  color: var(--tx);
  text-decoration: none;
  display: inline-block;
}

.brand:hover { text-decoration: underline; text-underline-offset: 5px; }

.nav {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  font-size: 15px;
  line-height: 1.6;
}

.nav a {
  color: var(--tx);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}

.nav a:hover { border-bottom-color: var(--ac); }

.nav--foot { gap: 4px 0; }

.nav--foot li + li::before {
  content: "\00b7";
  color: var(--ac2);
  padding: 0 12px;
}

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

.hero { padding: calc(var(--r) * 1.1) 0 0; }

.hero .margin { padding-top: 4px; }

.hero h1 { grid-column: 4 / 11; }

.lede {
  grid-column: 4 / 10;
  margin-top: 44px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.lede p {
  margin: 0;
  padding: 24px 0;
}

.lede p + p { border-top: 1px solid var(--rule); }

/* ---------- lámina principal ---------- */

.plate { padding: var(--r) 0; }

.plate .fig {
  grid-column: 6 / 13;
  grid-row: 1;
  margin: 0;
}

.plate img,
.detail img {
  display: block;
  width: 100%;
  height: auto;
}

.plate .cap { padding-top: 10px; }

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

.list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

.list li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 16px;
  line-height: 1.7;
}

.list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 15px;
  height: 1px;
  background: var(--ac);
}

.steps {
  list-style: none;
  counter-reset: step;
  margin: 30px 0 0;
  padding: 0;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 44px;
  margin-bottom: 18px;
  line-height: 1.7;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ac2);
  letter-spacing: 0.08em;
}

/* ---------- sección de detalle sobre fondo oscuro ---------- */

.detail .fig {
  grid-column: 9 / 13;
  grid-row: 1;
  margin: 0;
}

.detail .fig .cap { padding-top: 12px; }

.detail .txt {
  grid-column: 4 / 9;
  grid-row: 1;
}

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

.site-foot {
  background: var(--bg-alt);
  border-top: 1px solid var(--rule);
  padding: 52px 0 60px;
}

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

.foot-mail {
  grid-column: 10 / 13;
  grid-row: 1;
  text-align: right;
  font-size: 15px;
}

.foot-name {
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: 0.05em;
  margin: 0 0 14px;
}

.foot-note {
  font-size: 14px;
  color: var(--tx2);
  line-height: 1.6;
  margin: 18px 0 0;
  max-width: 46ch;
}

/* ---------- páginas de texto ---------- */

.page-head { padding: calc(var(--r) * 0.9) 0 0; }

.page-head h1 { grid-column: 4 / 11; }

.page-head .lede { margin-top: 38px; }

.block { padding: var(--r) 0; }

.block + .block { padding-top: 0; }

.block .tcol h2 { margin-bottom: 0; }

.sub {
  font-size: 14px;
  color: var(--tx2);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 10px;
}

/* ---------- adaptación ---------- */

@media (max-width: 1080px) {
  .tcol { grid-column: 4 / 11; }
  .wcol { grid-column: 4 / 13; }
  .hero h1,
  .page-head h1 { grid-column: 4 / 13; }
  .lede { grid-column: 4 / 12; }
  .plate .fig { grid-column: 5 / 13; }
  .detail .txt { grid-column: 4 / 9; }
  .detail .fig { grid-column: 9 / 13; }
  .foot-body { grid-column: 4 / 10; }
}

@media (max-width: 860px) {
  :root { --r: 44px; }

  body { font-size: 17px; line-height: 1.85; }

  .ruled { grid-template-columns: 1fr; column-gap: 0; }

  .ruled > * { grid-column: 1 !important; grid-row: auto !important; }

  .margin {
    border-right: 0;
    border-left: 2px solid var(--rule-strong);
    padding: 2px 0 2px 14px;
    text-align: left;
    margin-bottom: 22px;
  }

  .num { padding-top: 0; }

  .initial { font-size: 40px; }

  .hero { padding-top: var(--r); }

  .lede { margin-top: 30px; }

  .lede p { padding: 20px 0; }

  .plate .fig { margin-bottom: 12px; }

  .plate .margin { margin-bottom: 18px; }

  .detail .fig { margin-top: 34px; }

  .foot-mail { text-align: left; margin-top: 22px; }

  .nav { gap: 2px 16px; }

  .nav--foot { flex-direction: column; }

  .nav--foot li + li::before { content: none; }
}

@media (max-width: 420px) {
  h1 { font-size: 27px; }
}