/* Tudandobi — hoja de estilo única para todas las páginas */

:root {
  --bg: #171514;
  --bg-alt: #201c19;
  --bg-light: #ede9e3;
  --text: #e6e1da;
  --muted: #9a9088;
  --ink: #171514;
  --accent: #f08a24;
  --accent-2: #2f7a6e;
  --sans: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  --gap: 24px;
  --pad: 32px;
}

* { box-sizing: border-box; }

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

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

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

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: 3px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- rejilla de 12 columnas ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gap);
  max-width: 1280px;
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.band { padding-top: 88px; padding-bottom: 88px; }
.band-tight { padding-top: 52px; padding-bottom: 52px; }
.tone-a { background: var(--bg); }
.tone-b { background: var(--bg-alt); }

/* bloque de texto de 6 columnas, desplazado según el escalón de la sección */
.block { grid-column: 1 / span 6; }
.s1 .block { grid-column: 2 / span 6; }
.s2 .block { grid-column: 3 / span 6; }
.s3 .block { grid-column: 4 / span 6; }

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

h1, h2, h3, .brandmark, .nav a, .sec-n, .cap-label {
  font-family: var(--sans);
}

h1 {
  margin: 0;
  font-size: clamp(2.4rem, 6.6vw, 5.1rem);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.035em;
}

h2 {
  margin: 0 0 18px;
  font-size: clamp(1.6rem, 2.9vw, 2.2rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

h3 {
  margin: 32px 0 10px;
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

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

.sec-n {
  display: block;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-2);
  letter-spacing: 0.02em;
  margin-bottom: 10px;
}

.lead { font-size: 1.14rem; }

ul, ol { margin: 0 0 18px; padding-left: 1.15em; }
li { margin-bottom: 9px; }
li::marker { color: var(--accent); }
ol li::marker { font-family: var(--sans); font-weight: 700; }

.note { color: var(--muted); font-size: 0.95rem; line-height: 1.6; }

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

.navband { background: var(--bg); padding-top: 22px; padding-bottom: 22px; }

.navband .grid { align-items: baseline; row-gap: 12px; }

.brandmark {
  grid-column: 1 / span 3;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--text);
  text-decoration: none;
}
.brandmark:hover { color: var(--accent); }

.nav {
  grid-column: 4 / span 9;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  justify-content: flex-end;
}

.nav a {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.nav a:hover { color: var(--text); }
.nav a[aria-current="page"] {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

/* ---------- hero en tres capas ---------- */

.hero-mid {
  background: var(--bg-alt);
  padding-top: 132px;
  padding-bottom: 44px;
}
.hero-mid .grid { align-items: end; }
.hero-mid h1 { grid-column: 1 / span 10; }

.hero-low {
  background: var(--bg);
  padding-top: 52px;
  padding-bottom: 52px;
}
.hero-low .intro { grid-column: 1 / span 6; }
.hero-low .topics { grid-column: 8 / span 5; }

.topics ul { list-style: none; padding: 0; margin: 0; }
.topics li {
  font-family: var(--sans);
  font-size: 0.98rem;
  line-height: 1.45;
  padding: 9px 0 9px 22px;
  position: relative;
  color: var(--text);
}
.topics li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 12px;
  height: 2px;
  background: var(--accent);
}

/* ---------- imagen principal ---------- */

.figband { background: var(--bg-alt); padding-top: 52px; padding-bottom: 52px; }
.figband figure { grid-column: 4 / span 9; margin: 0; }
.figband figcaption { margin-top: 14px; text-align: left; }

figcaption { color: var(--muted); font-size: 0.9rem; line-height: 1.55; font-family: var(--sans); }

/* ---------- sección contrastada clara ---------- */

.light {
  background: var(--bg-light);
  color: var(--ink);
  padding-top: 88px;
  padding-bottom: 88px;
}
.light .grid { align-items: start; row-gap: 40px; }
.light .sec-n { color: var(--accent-2); }
.light figure { grid-column: 2 / span 4; margin: 0; }
.light .block { grid-column: 7 / span 5; }
.light figcaption { color: #55504a; }
.light a { color: var(--ink); text-decoration-color: var(--accent); text-decoration-thickness: 2px; }
.light li::marker { color: var(--accent-2); }

/* ---------- páginas interiores ---------- */

.page-head { background: var(--bg-alt); padding-top: 108px; padding-bottom: 56px; }
.page-head h1 { grid-column: 1 / span 9; font-size: clamp(2.1rem, 5vw, 3.7rem); }
.page-head .kicker {
  grid-column: 1 / span 9;
  color: var(--accent-2);
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 16px;
}

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

.site-footer { background: var(--bg-light); color: var(--ink); padding-top: 64px; padding-bottom: 56px; }
.site-footer .grid { row-gap: 34px; }

.footer-name {
  grid-column: 1 / span 12;
  font-family: var(--sans);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 0.9;
  font-size: clamp(3rem, 12.5vw, 9.6rem);
  margin: 0 0 28px;
  color: var(--ink);
}

.fcol { grid-column: span 4; }
.fcol::before {
  content: "";
  display: block;
  width: 42px;
  height: 3px;
  background: var(--accent);
  margin-bottom: 14px;
}
.fcol h2 {
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin: 0 0 10px;
  color: var(--ink);
}
.fcol ul { list-style: none; margin: 0; padding: 0; }
.fcol li { margin-bottom: 6px; }
.fcol a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 3px; }
.fcol p { font-size: 0.95rem; line-height: 1.6; color: #3c3833; }
.site-footer :focus-visible { outline-color: var(--ink); }

/* ---------- adaptación a pantallas medianas y pequeñas ---------- */

@media (max-width: 980px) {
  .hero-mid { padding-top: 92px; }
  .hero-mid h1,
  .hero-low .intro,
  .hero-low .topics,
  .figband figure,
  .light figure,
  .light .block,
  .page-head h1,
  .page-head .kicker,
  .block,
  .s1 .block,
  .s2 .block,
  .s3 .block { grid-column: 1 / span 12; }

  .hero-low .topics { margin-top: 34px; }
  .light figure { max-width: 420px; }
  .fcol { grid-column: span 6; }
}

@media (max-width: 680px) {
  :root { --pad: 20px; }
  body { font-size: 17px; }
  .band { padding-top: 60px; padding-bottom: 60px; }
  .band-tight, .figband, .hero-low { padding-top: 40px; padding-bottom: 40px; }
  .light { padding-top: 60px; padding-bottom: 60px; }
  .hero-mid { padding-top: 64px; padding-bottom: 32px; }
  .page-head { padding-top: 72px; padding-bottom: 44px; }
  .navband .grid { row-gap: 14px; }
  .brandmark { grid-column: 1 / span 12; }
  .nav { grid-column: 1 / span 12; justify-content: flex-start; gap: 8px 18px; }
  .fcol { grid-column: 1 / span 12; }
  .footer-name { margin-bottom: 18px; }
}