/* Kibroteldu — hoja de estilos común */

:root {
  --bg: #151b2b;
  --bg-alt: #1c2436;
  --bg-light: #eee8dc;
  --text: #e4e0d4;
  --muted: #8a93a5;
  --text-dark: #151b2b;
  --accent: #c98a4c;
  --accent-ink: #8f5a1d;
  --accent2: #7fa3b8;
  --accent2-ink: #3d6076;
  --gutter: 24px;
  --shell: 1292px;
  --pad: clamp(20px, 5vw, 56px);
  --gap-img: 112px;
  --gap-text: 64px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  overflow-x: hidden;
}

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

.grid {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-inline: var(--pad);
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gutter);
}

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

h1, h2, h3 { margin: 0; }

h1 {
  font-size: clamp(2.5rem, 6.6vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.03;
}

h2 {
  font-size: clamp(1.45rem, 2.5vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.22;
  margin-bottom: 18px;
}

h3 {
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  margin: 28px 0 10px;
}

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

.lead {
  font-size: clamp(1.05rem, 1.5vw, 1.22rem);
  line-height: 1.6;
  color: var(--text);
}

.num {
  display: block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--accent2);
  margin-bottom: 12px;
}

.caption {
  font-size: 13px;
  line-height: 1.55;
  color: var(--muted);
  margin: 14px 0 0;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 138, 76, 0.45);
}

a:hover { border-bottom-color: var(--accent); }

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

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

ul.marks {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
}

ul.marks li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
}

ul.marks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 10px;
  height: 3px;
  background: var(--accent);
}

ol.steps {
  margin: 0 0 18px;
  padding-left: 22px;
}

ol.steps li {
  margin-bottom: 10px;
  padding-left: 6px;
}

ol.steps li::marker {
  color: var(--accent2);
  font-weight: 600;
}

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

.site-head {
  padding-block: 26px 18px;
  border-bottom: 1px solid rgba(138, 147, 165, 0.22);
}

.head-inner {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 32px;
}

.brand {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
  border: 0;
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-size: 14.5px;
  color: var(--muted);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* ---------- hero ---------- */

.hero { padding-block: clamp(64px, 10vw, 128px) 0; }

.hero h1 { grid-column: 1 / span 7; grid-row: 1; }

.hero-bar {
  grid-column: 11 / span 1;
  grid-row: 1;
  justify-self: start;
  align-self: start;
  width: 12px;
  height: clamp(120px, 15vw, 196px);
  background: var(--accent2);
  margin-top: 10px;
}

.hero-intro {
  grid-column: 1 / span 5;
  grid-row: 2;
  margin-top: 36px;
}

.hero-meta {
  grid-column: 1 / span 5;
  grid-row: 3;
  margin-top: 22px;
  font-size: 13px;
  color: var(--muted);
}

/* ---------- separadores ---------- */

.rule {
  height: 3px;
  border: 0;
  margin: 0;
  background: var(--accent);
}

.rule-a { grid-column: 1 / span 2; }
.rule-b { grid-column: 2 / span 4; background: var(--accent2); }
.rule-c { grid-column: 1 / span 5; }
.rule-d { grid-column: 4 / span 3; background: var(--accent2); }
.rule-e { grid-column: 2 / span 3; }

.rule-row { padding-block: 0; }

/* ---------- secciones de texto ---------- */

.band { padding-block: var(--gap-text); }
.band-alt { background: var(--bg-alt); }
.band-img { padding-block: var(--gap-img); }

.col-main { grid-column: 2 / span 6; }
.col-wide { grid-column: 2 / span 7; }
.col-narrow { grid-column: 3 / span 5; }
.col-right { grid-column: 6 / span 6; }

.stack > * + * { margin-top: var(--gap-text); }

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

.figure-main {
  grid-column: 1 / span 8;
  margin: 0;
}

.figure-main img {
  display: block;
  width: 100%;
  height: auto;
}

.figure-main .caption {
  max-width: 46ch;
  margin-left: auto;
  text-align: right;
}

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

.section-light {
  background: var(--bg-light);
  color: var(--text-dark);
  padding-block: clamp(72px, 9vw, 112px);
}

.section-light .num { color: var(--accent2-ink); }
.section-light .caption { color: #5d6470; }
.section-light a { color: var(--accent-ink); border-bottom-color: rgba(143, 90, 29, 0.5); }
.section-light ul.marks li::before { background: var(--accent-ink); }

.figure-detail {
  grid-column: 8 / span 4;
  margin: 0;
  align-self: start;
}

.figure-detail img {
  display: block;
  width: 100%;
  height: auto;
}

.light-text { grid-column: 1 / span 6; }

/* ---------- página interior ---------- */

.page-head { padding-block: clamp(56px, 8vw, 96px) 0; }
.page-head h1 {
  grid-column: 1 / span 8;
  font-size: clamp(2.1rem, 4.6vw, 3.3rem);
}
.page-head .lead {
  grid-column: 1 / span 6;
  margin-top: 28px;
}

/* ---------- about ---------- */

.about-grid { padding-block: clamp(56px, 7vw, 88px); row-gap: 56px; }

.about-mark {
  grid-column: 1 / span 1;
  height: 3px;
  background: var(--accent);
  margin-top: 14px;
  align-self: start;
}

.about-mark.two { background: var(--accent2); }

.about-block { grid-column: 3 / span 6; }

.a-r1 { grid-row: 1; }
.a-r2 { grid-row: 2; }
.a-r3 { grid-row: 3; }
.a-r4 { grid-row: 4; }

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

.site-foot {
  background: var(--bg-alt);
  padding-block: 56px 48px;
  margin-top: clamp(64px, 8vw, 112px);
}

.foot-bar {
  grid-column: 1 / span 4;
  grid-row: 1;
  height: 6px;
  background: var(--accent);
  margin-bottom: 34px;
}

.foot-name {
  grid-column: 1 / span 5;
  grid-row: 2;
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.foot-nav {
  grid-column: 1 / span 7;
  grid-row: 3;
  margin-top: 18px;
}

.foot-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 0;
  padding: 0;
}

.foot-nav a {
  font-size: 14.5px;
  color: var(--muted);
  border-bottom: 1px solid transparent;
}

.foot-nav a:hover { color: var(--text); border-bottom-color: var(--accent); }

.foot-contact {
  grid-column: 9 / span 4;
  grid-row: 2 / span 2;
  text-align: right;
  font-size: 14.5px;
  color: var(--muted);
}

.foot-contact a { color: var(--accent); }

.foot-note {
  grid-column: 1 / span 8;
  grid-row: 4;
  margin-top: 40px;
  font-size: 13px;
  color: var(--muted);
}

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

@media (max-width: 1000px) {
  .hero h1 { grid-column: 1 / span 9; }
  .hero-bar { grid-column: 12 / span 1; }
  .hero-intro, .hero-meta { grid-column: 1 / span 7; }
  .col-main, .col-wide { grid-column: 1 / span 9; }
  .col-narrow { grid-column: 2 / span 8; }
  .col-right { grid-column: 3 / span 9; }
  .figure-main { grid-column: 1 / span 10; }
  .light-text { grid-column: 1 / span 7; }
  .figure-detail { grid-column: 8 / span 5; }
  .about-block { grid-column: 3 / span 9; }
  .page-head h1, .page-head .lead { grid-column: 1 / span 10; }
  .foot-name, .foot-nav { grid-column: 1 / span 8; }
  .foot-contact { grid-column: 9 / span 4; }
}

@media (max-width: 760px) {
  :root {
    --gap-img: 64px;
    --gap-text: 40px;
  }

  body { font-size: 16.5px; }

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

  .hero { padding-top: 48px; }
  .hero h1 { grid-row: auto; }
  .hero-bar {
    grid-row: auto;
    width: 72px;
    height: 8px;
    margin: 0 0 24px;
  }
  .hero-intro { margin-top: 26px; }

  .rule-a { width: 64px; }
  .rule-b { width: 128px; }
  .rule-c { width: 96px; }
  .rule-d { width: 112px; }
  .rule-e { width: 80px; }

  .figure-main .caption { text-align: left; margin-left: 0; }

  .figure-detail { margin-bottom: 32px; max-width: 420px; }

  .about-mark { width: 56px; margin: 0 0 18px; }

  .foot-bar { width: 160px; margin-bottom: 26px; }
  .foot-contact { text-align: left; margin-top: 26px; }
  .foot-nav { margin-top: 20px; }
  .foot-note { margin-top: 32px; }

  .site-head { padding-block: 20px 14px; }
  .head-inner { flex-direction: column; align-items: flex-start; gap: 14px; }
  .site-nav ul { gap: 6px 18px; }
}