/* Grutrosti — hoja de estilo común
   Composición modular en mosaico, 12 columnas, juntas de 4px */

:root {
  --bg: #f4f0e8;
  --bg-alt: #e7e1d5;
  --ink: #20242a;
  --text: #22201b;
  --muted: #776f62;
  --light: #f4f0e8;
  --accent: #2c4668;
  --accent2: #a06a2c;
  --surface: #ece6da;
  --seam: 4px;
  --pad: 32px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 18px;
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

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

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

h1, h2, h3, .sans {
  font-family: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-weight: 800;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.3rem, 5.6vw, 4.1rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin: 0;
}

h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1.08;
  margin: 0 0 18px;
}

h3 {
  font-size: 1.12rem;
  line-height: 1.2;
  margin: 26px 0 10px;
  letter-spacing: -0.01em;
}

p { margin: 0 0 18px; }
p:last-child { margin-bottom: 0; }

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- rejilla modular ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--seam);
  align-items: stretch;
}

.m { padding: var(--pad); }
.m > :first-child { margin-top: 0; }

.s { background: var(--surface); }
.alt .s { background: var(--bg); }

.fill-blue { background: var(--accent); }
.fill-ochre { background: var(--accent2); }
.fill-ink { background: var(--ink); }
.fill-bone { background: #ddd4c2; }

.c1 { grid-column: span 1; min-height: 24px; padding: 0; }
.c3 { grid-column: span 3; }
.c4 { grid-column: span 4; }
.c5 { grid-column: span 5; }
.c6 { grid-column: span 6; }
.c7 { grid-column: span 7; }
.c8 { grid-column: span 8; }
.c12 { grid-column: span 12; }

.num {
  font-family: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent2);
  display: block;
  margin-bottom: 10px;
}

.lead { font-size: 1.05rem; }

.caption {
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--muted);
}

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

.site-head { padding: 24px 0 0; }

.head-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--seam);
}

.brand {
  grid-column: span 4;
  background: var(--ink);
  color: var(--light);
  padding: 18px 24px;
  font-family: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 1.28rem;
  display: flex;
  align-items: center;
}

.brand a { color: var(--light); text-decoration: none; }
.brand a:hover { text-decoration: underline; text-underline-offset: 4px; }
.brand a:focus-visible { outline: 3px solid #c9a06a; outline-offset: 4px; }

.mainnav {
  grid-column: span 8;
  background: var(--surface);
  padding: 14px 24px;
  display: flex;
  align-items: center;
}

.mainnav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 26px;
}

.mainnav a {
  font-family: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.mainnav a:hover { border-bottom-color: var(--accent); }
.mainnav a[aria-current="page"] { border-bottom-color: var(--accent2); }

/* ---------- tiras de teselas ---------- */

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, 24px);
  gap: var(--seam);
  margin: 0;
  padding: 0;
  list-style: none;
}

.tiles li {
  height: 24px;
  background: var(--bg-alt);
}

.alt .tiles li { background: var(--bg); }
.tiles li:nth-child(3n + 1) { background: var(--accent); }
.tiles li:nth-child(5n + 3) { background: var(--accent2); }
.tiles li:nth-child(7n + 2) { background: var(--ink); }

/* ---------- secciones ---------- */

section { padding: 84px 0; }
.alt { background: var(--bg-alt); }
.dark { background: var(--ink); color: var(--light); }
.dark h2, .dark h3 { color: var(--light); }
.dark .num { color: #d09a55; }
.dark .caption { color: #b6ae9f; }
.dark .s { background: #2a2f36; }
.dark a { color: #9fbde4; }
.dark a:focus-visible { outline-color: #d09a55; }
.dark .tiles li { background: #2a2f36; }

.hero { padding: 40px 0 84px; }

.hero-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: minmax(46px, auto);
  gap: var(--seam);
}

.hero-title {
  grid-column: 1 / 9;
  grid-row: 1 / 3;
  background: var(--surface);
  padding: 44px 40px;
  display: flex;
  align-items: center;
}

.hero-intro {
  grid-column: 9 / 13;
  grid-row: 1 / 3;
  background: var(--ink);
  color: var(--light);
  padding: 32px;
  font-size: 0.98rem;
}

.t1 { grid-column: 1 / 2; grid-row: 3; background: var(--accent); }
.t2 { grid-column: 2 / 3; grid-row: 3; background: var(--bg-alt); }
.t3 { grid-column: 3 / 5; grid-row: 3; background: var(--accent2); }
.t4 { grid-column: 5 / 6; grid-row: 3; background: var(--ink); }
.t5 { grid-column: 6 / 8; grid-row: 3; background: var(--bg-alt); }
.t6 { grid-column: 8 / 9; grid-row: 3; background: var(--accent); }
.t7 { grid-column: 9 / 11; grid-row: 3; background: #ddd4c2; }
.t8 { grid-column: 11 / 13; grid-row: 3; background: var(--accent2); }
.hero-grid .tile { min-height: 46px; }

.hero-image {
  grid-column: 3 / 9;
  grid-row: 4 / 7;
  background: var(--surface);
}

.hero-image img { width: 100%; }

.hero-caption {
  grid-column: 9 / 12;
  grid-row: 4 / 7;
  background: var(--surface);
  padding: 28px;
}

.hero-side {
  grid-column: 12 / 13;
  grid-row: 4 / 7;
  background: var(--accent);
}

.hero-left {
  grid-column: 1 / 3;
  grid-row: 4 / 7;
  background: var(--bg-alt);
}

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

ul.check, ol.steps {
  margin: 0 0 18px;
  padding-left: 0;
  list-style: none;
}

ul.check li, ol.steps li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 10px;
}

ul.check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 10px;
  background: var(--accent);
}

.dark ul.check li::before { background: #d09a55; }

ol.steps { counter-reset: st; }

ol.steps li {
  counter-increment: st;
  padding-left: 34px;
}

ol.steps li::before {
  content: counter(st, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-weight: 800;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--accent2);
  line-height: 1.9;
}

dl.terms { margin: 0; }
dl.terms dt {
  font-family: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-top: 18px;
}
dl.terms dd { margin: 4px 0 0; }

/* ---------- imagen de detalle ---------- */

.detail-fig { margin: 0; }
.detail-fig img { width: 100%; }
.detail-fig figcaption { margin-top: 12px; font-size: 0.86rem; color: #b6ae9f; line-height: 1.55; }

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

.site-foot {
  background: var(--bg-alt);
  padding: 48px 0 64px;
}

.foot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--seam);
  margin-top: 24px;
}

.foot-grid > div {
  background: var(--bg);
  padding: 26px;
  font-size: 0.92rem;
}

.foot-grid h2 {
  font-size: 1.05rem;
  margin: 0 0 12px;
}

.foot-grid ul { list-style: none; margin: 0; padding: 0; }
.foot-grid li { margin-bottom: 8px; }

.foot-grid a {
  font-family: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
}

.foot-note { color: var(--muted); }

/* ---------- adaptación a pantallas estrechas ---------- */

@media (max-width: 980px) {
  .hero-title { grid-column: 1 / 13; }
  .hero-intro { grid-column: 1 / 13; grid-row: 3 / 4; }
  .hero-grid .tile { display: none; }
  .hero-left { display: none; }
  .hero-image { grid-column: 1 / 9; grid-row: 4 / 7; }
  .hero-caption { grid-column: 9 / 13; grid-row: 4 / 7; }
  .hero-side { display: none; }
  .brand { grid-column: span 12; }
  .mainnav { grid-column: span 12; }
  .foot-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  body { font-size: 17px; }
  :root { --pad: 24px; }
  section { padding: 48px 0; }
  .hero { padding: 28px 0 48px; }
  .grid > * { grid-column: 1 / -1 !important; grid-row: auto !important; }
  .grid { grid-template-columns: 1fr; }
  .hero-grid { grid-template-columns: 1fr; grid-auto-rows: auto; }
  .hero-grid > * { grid-column: 1 / -1 !important; grid-row: auto !important; }
  .hero-title { padding: 28px 24px; }
  .foot-grid { grid-template-columns: 1fr; }
  .mainnav ul { gap: 8px 18px; }
}