:root {
  --ink: #0f1b1b;
  --ink-soft: #243635;
  --teal: #146a6f;
  --orange: #f28c28;
  --cream: #f6efe4;
  --paper: #fffaf2;
  --white: #ffffff;
  --line: rgba(15, 27, 27, 0.16);
  --radius: 1.25rem;
  --shadow: 0 24px 70px rgba(15, 27, 27, 0.14);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--cream);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--cream); color: var(--ink); }
img { display: block; max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  transform: translateY(-150%);
  padding: 0.75rem 1rem;
  background: var(--white);
  border-radius: 999px;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  padding: 1rem clamp(1.25rem, 4vw, 4.5rem);
  background: rgba(246, 239, 228, 0.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-decoration: none;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--orange);
  color: var(--ink);
}
nav { display: flex; justify-content: center; gap: clamp(1rem, 3vw, 2.5rem); }
nav a { text-decoration: none; font-size: 0.9rem; font-weight: 700; }
nav a:hover { color: var(--teal); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0 1.4rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--white);
  font-weight: 800;
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}
.button:hover { transform: translateY(-2px); background: var(--teal); }
.button-small { min-height: 2.5rem; padding-inline: 1rem; font-size: 0.85rem; }
.button-ghost { background: transparent; color: var(--ink); }
.button-ghost:hover { color: var(--white); }

.hero {
  min-height: calc(100svh - 4.5rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.9fr);
  align-items: center;
  gap: clamp(2.5rem, 6vw, 7rem);
  padding: clamp(4rem, 8vw, 8rem) clamp(1.25rem, 6vw, 7rem);
  overflow: hidden;
}
.eyebrow, .section-index {
  margin: 0 0 1.25rem;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
h1, h2, h3, p { text-wrap: balance; }
h1 {
  max-width: 12ch;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(4rem, 9vw, 9rem);
  line-height: 0.82;
  letter-spacing: -0.065em;
}
h1 em { color: var(--orange); font-weight: 400; }
.hero-lead {
  max-width: 42rem;
  margin: 2rem 0;
  font-size: clamp(1.05rem, 1.5vw, 1.35rem);
  line-height: 1.65;
  color: var(--ink-soft);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.signal-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}
.signal-list li {
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
}
.hero-visual { position: relative; }
.visual-frame {
  padding: clamp(0.75rem, 2vw, 1.4rem);
  border: 1px solid var(--line);
  border-radius: 2rem;
  background: rgba(255,255,255,0.42);
  box-shadow: var(--shadow);
  transform: rotate(1.5deg);
}
.visual-frame img { width: 100%; border-radius: 1.4rem; }
.floating-code {
  position: absolute;
  right: -1rem;
  bottom: -1.5rem;
  display: grid;
  gap: 0.35rem;
  width: min(18rem, 80%);
  padding: 1rem;
  border-radius: 1rem;
  background: var(--ink);
  color: #bde7df;
  box-shadow: var(--shadow);
  font: 0.78rem/1.5 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.manifesto {
  display: grid;
  grid-template-columns: 12rem 1fr;
  gap: 2rem;
  padding: clamp(4rem, 9vw, 9rem) clamp(1.25rem, 6vw, 7rem);
  background: var(--ink);
  color: var(--white);
}
.manifesto .section-index { color: var(--orange); }
blockquote {
  max-width: 22ch;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.5rem, 5.6vw, 6rem);
  line-height: 1.03;
  letter-spacing: -0.045em;
}

.section {
  padding: clamp(5rem, 10vw, 10rem) clamp(1.25rem, 6vw, 7rem);
  border-bottom: 1px solid var(--line);
}
.section-heading {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr) minmax(16rem, 0.5fr);
  align-items: end;
  gap: 2rem;
  margin-bottom: 3.5rem;
}
.section-heading h2, .split h2, .cta h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.8rem, 6vw, 6.5rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}
.section-heading p:last-child { line-height: 1.65; color: var(--ink-soft); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.feature-card {
  min-height: 22rem;
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.26);
}
.feature-card-accent { background: var(--orange); }
.card-number { color: var(--teal); font: 700 0.8rem ui-monospace, monospace; }
.feature-card h3 { margin: auto 0 1rem; font-size: 1.65rem; }
.feature-card p { min-height: 7rem; line-height: 1.6; }
.feature-card code {
  width: fit-content;
  padding: 0.4rem 0.6rem;
  border-radius: 0.5rem;
  background: rgba(15,27,27,0.08);
  font-size: 0.75rem;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(22rem, 1fr);
  gap: clamp(3rem, 8vw, 8rem);
  background: var(--paper);
}
.process { margin: 0; padding: 0; list-style: none; counter-reset: step; }
.process li {
  display: grid;
  grid-template-columns: 3rem 10rem 1fr;
  align-items: baseline;
  gap: 1rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
  counter-increment: step;
}
.process li::before {
  content: counter(step, decimal-leading-zero);
  color: var(--orange);
  font: 800 0.8rem ui-monospace, monospace;
}
.process strong { font-size: 1.05rem; }
.process span { color: var(--ink-soft); line-height: 1.55; }

.tech { background: var(--teal); color: var(--white); }
.tech .section-index { color: #c4f0e8; }
.tech .section-heading p:last-child { color: rgba(255,255,255,0.78); }
.stack { display: grid; border: 1px solid rgba(255,255,255,0.24); }
.stack div {
  display: grid;
  grid-template-columns: minmax(8rem, 0.35fr) 1fr;
  gap: 2rem;
  padding: 1.3rem 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.24);
}
.stack div:last-child { border-bottom: 0; }
.stack span { color: #c4f0e8; font: 700 0.78rem ui-monospace, monospace; text-transform: uppercase; }
.stack strong { font-size: clamp(1rem, 2vw, 1.45rem); }

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
.timeline article { position: relative; min-height: 18rem; padding: 1.5rem; border-right: 1px solid var(--line); }
.timeline article:last-child { border-right: 0; }
.timeline article::before {
  content: "";
  position: absolute;
  top: -0.42rem;
  left: 1.5rem;
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  background: var(--orange);
}
.timeline span { color: var(--teal); font: 800 0.75rem ui-monospace, monospace; text-transform: uppercase; }
.timeline h3 { margin: 5rem 0 1rem; font-size: 1.4rem; }
.timeline p { line-height: 1.6; color: var(--ink-soft); }

.cta {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 3rem;
  padding: clamp(5rem, 10vw, 10rem) clamp(1.25rem, 6vw, 7rem);
  background: var(--orange);
}
.cta .eyebrow { color: var(--ink); }
.cta-actions { display: grid; justify-items: start; gap: 1rem; }
.text-link { font-weight: 900; text-decoration: none; }

footer {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.25rem;
  padding: 2rem clamp(1.25rem, 6vw, 7rem);
  background: var(--ink);
  color: var(--white);
}
footer img { width: 4.5rem; height: 4.5rem; object-fit: contain; }
footer p { margin: 0.35rem 0 0; color: rgba(255,255,255,0.68); font-size: 0.85rem; }

@media (max-width: 980px) {
  .site-header { grid-template-columns: auto 1fr; }
  .site-header nav { display: none; }
  .site-header > .button { justify-self: end; }
  .hero, .split { grid-template-columns: 1fr; }
  .hero { padding-top: 3rem; }
  .hero-visual { max-width: 42rem; }
  .manifesto { grid-template-columns: 1fr; }
  .section-heading { grid-template-columns: 1fr; align-items: start; }
  .card-grid, .timeline { grid-template-columns: repeat(2, 1fr); }
  .cta { grid-template-columns: 1fr; align-items: start; }
}

@media (max-width: 620px) {
  .site-header { padding-inline: 1rem; }
  .site-header > .button { display: none; }
  h1 { font-size: clamp(3.5rem, 18vw, 5.5rem); }
  .card-grid, .timeline { grid-template-columns: 1fr; }
  .feature-card { min-height: 18rem; }
  .process li { grid-template-columns: 2.5rem 1fr; }
  .process span { grid-column: 2; }
  .stack div { grid-template-columns: 1fr; gap: 0.6rem; }
  footer { grid-template-columns: auto 1fr; }
  footer > p { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* ---- Seletor de idioma (discreto) ---- */
.header-actions { display: flex; align-items: center; gap: .75rem; }
.lang-switch {
  display: inline-flex; align-items: center; gap: 2px; padding: 2px;
  border: 1px solid var(--line); border-radius: 999px;
}
.lang-switch button {
  font: inherit; font-size: .72rem; font-weight: 600; letter-spacing: .04em;
  line-height: 1; padding: .34rem .55rem; border: 0; border-radius: 999px;
  background: transparent; color: var(--ink-soft); cursor: pointer;
  transition: background .2s ease, color .2s ease;
}
.lang-switch button:hover { color: var(--ink); }
.lang-switch button[aria-pressed="true"] { background: var(--teal); color: var(--white); }
.lang-switch button:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }
@media (max-width: 720px) {
  .header-actions { gap: .5rem; }
  .lang-switch button { padding: .3rem .42rem; font-size: .68rem; }
}