:root {
  --ink: #17121f;
  --ink-soft: #43384e;
  --primary: #6c2d73;
  --secondary: #f4d36e;
  --accent: #f2a900;
  --cream: #efe2cc;
  --paper: #fff7e5;
  --white: #ffffff;
  --line: color-mix(in srgb, var(--ink) 18%, transparent);
  --shadow: 0 26px 74px color-mix(in srgb, var(--ink) 17%, transparent);
  --radius: 1.4rem;
  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; overflow-x: hidden; background: var(--cream); color: var(--ink); }
img { display: block; max-width: 100%; }
a { color: inherit; }
p, li { line-height: 1.65; }
h1, h2, h3, p { text-wrap: balance; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.skip-link {
  position: fixed; z-index: 100; top: .75rem; left: .75rem;
  transform: translateY(-160%); padding: .8rem 1rem;
  background: var(--white); border-radius: 999px;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky; top: 0; z-index: 30;
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 2rem;
  padding: 1rem clamp(1rem, 4vw, 4.5rem);
  background: color-mix(in srgb, var(--cream) 88%, transparent);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex; align-items: center; gap: .7rem;
  text-decoration: none; font-weight: 950; letter-spacing: .13em;
}
.brand-mark {
  display: grid; place-items: center; width: 2.1rem; height: 2.1rem;
  border-radius: 50%; background: var(--accent); color: var(--ink);
}
nav { display: flex; justify-content: center; gap: clamp(1rem, 3vw, 2.4rem); }
nav a { text-decoration: none; font-size: .88rem; font-weight: 800; }
nav a:hover { color: var(--primary); }

.button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 3.25rem; padding: 0 1.45rem;
  border: 1px solid var(--ink); border-radius: 999px;
  background: var(--ink); color: var(--white);
  font-weight: 850; text-decoration: none;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}
.button:hover { transform: translateY(-2px); background: var(--primary); }
.button-small { min-height: 2.5rem; padding-inline: 1rem; font-size: .84rem; }
.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, 1.05fr) minmax(20rem, .85fr);
  align-items: center; gap: clamp(2.5rem, 6vw, 7rem);
  padding: clamp(4rem, 8vw, 8rem) clamp(1.25rem, 6vw, 7rem);
}
.eyebrow, .section-index {
  margin: 0 0 1.25rem; color: var(--primary);
  font-size: .77rem; font-weight: 950; letter-spacing: .17em;
  text-transform: uppercase;
}
h1 {
  max-width: 11ch; margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(4rem, 9vw, 9rem);
  line-height: .84; letter-spacing: -.065em;
}
h1 em { color: var(--accent); font-weight: 400; }
.hero-lead {
  max-width: 43rem; margin: 2rem 0;
  color: var(--ink-soft); font-size: clamp(1.05rem, 1.55vw, 1.35rem);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.signal-list {
  display: flex; flex-wrap: wrap; gap: .65rem;
  margin: 2rem 0 0; padding: 0; list-style: none;
}
.signal-list li {
  padding: .5rem .8rem; border: 1px solid var(--line);
  border-radius: 999px; font-size: .78rem; font-weight: 800;
}
.hero-visual { position: relative; max-width: 42rem; justify-self: center; }
.visual-frame {
  padding: clamp(.7rem, 2vw, 1.35rem);
  border: 1px solid var(--line); border-radius: 2rem;
  background: color-mix(in srgb, var(--white) 45%, transparent);
  box-shadow: var(--shadow); transform: rotate(1.4deg);
}
.visual-frame img {
  width: 100%; max-height: 72svh; object-fit: cover;
  object-position: center; border-radius: 1.35rem;
}
.floating-code {
  position: absolute; right: -1rem; bottom: -1.4rem;
  display: grid; gap: .32rem; width: min(20rem, 82%);
  padding: 1rem; border-radius: 1rem;
  background: var(--ink); color: var(--secondary); box-shadow: var(--shadow);
  font: .76rem/1.55 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.manifesto {
  display: grid; grid-template-columns: 12rem 1fr; gap: 2rem;
  padding: clamp(4.5rem, 9vw, 9rem) clamp(1.25rem, 6vw, 7rem);
  background: var(--ink); color: var(--white);
}
.manifesto .section-index { color: var(--accent); }
blockquote {
  max-width: 24ch; margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.5rem, 5.5vw, 6rem);
  line-height: 1.03; letter-spacing: -.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, .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: .95; letter-spacing: -.05em;
}
.section-heading p:last-child { 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: color-mix(in srgb, var(--white) 28%, transparent);
}
.feature-card-accent { background: var(--accent); }
.card-number { color: var(--primary); font: 800 .78rem ui-monospace, monospace; }
.feature-card h3 { margin: auto 0 1rem; font-size: 1.55rem; }
.feature-card p { min-height: 7rem; }
.feature-card code {
  width: fit-content; padding: .42rem .62rem; border-radius: .5rem;
  background: color-mix(in srgb, var(--ink) 9%, transparent); font-size: .73rem;
}

.split {
  display: grid; grid-template-columns: minmax(0, .88fr) 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 11rem 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(--accent); font: 850 .78rem ui-monospace, monospace;
}
.process strong { font-size: 1.04rem; }
.process span { color: var(--ink-soft); }

.tech { background: var(--primary); color: var(--white); }
.tech .section-index { color: var(--secondary); }
.tech .section-heading p:last-child { color: color-mix(in srgb, var(--white) 76%, transparent); }
.stack { display: grid; border: 1px solid color-mix(in srgb, var(--white) 25%, transparent); }
.stack div {
  display: grid; grid-template-columns: minmax(8rem, .35fr) 1fr;
  gap: 2rem; padding: 1.3rem 1.5rem;
  border-bottom: 1px solid color-mix(in srgb, var(--white) 25%, transparent);
}
.stack div:last-child { border-bottom: 0; }
.stack span {
  color: var(--secondary); font: 750 .76rem ui-monospace, monospace;
  text-transform: uppercase;
}
.stack strong { font-size: clamp(1rem, 2vw, 1.4rem); }

.metrics {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1rem; margin-top: 3rem;
}
.metric {
  padding: 1.4rem; border: 1px solid color-mix(in srgb, var(--white) 25%, transparent);
  border-radius: 1rem;
}
.metric strong {
  display: block; margin-bottom: .4rem;
  font-family: Georgia, serif; font-size: clamp(2rem, 5vw, 4rem);
}
.metric span { color: color-mix(in srgb, var(--white) 76%, transparent); }

.timeline {
  display: grid; grid-template-columns: repeat(4, 1fr);
  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: -.42rem; left: 1.5rem;
  width: .85rem; height: .85rem; border-radius: 50%; background: var(--accent);
}
.timeline span {
  color: var(--primary); font: 850 .73rem ui-monospace, monospace;
  text-transform: uppercase;
}
.timeline h3 { margin: 5rem 0 1rem; font-size: 1.35rem; }
.timeline p { 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(--accent);
}
.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: 4.8rem; height: 4.8rem; object-fit: contain; }
footer p { margin: .35rem 0 0; color: color-mix(in srgb, var(--white) 68%, transparent); font-size: .84rem; }

[data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

@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; }
  .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: 640px) {
  .site-header { padding-inline: 1rem; }
  .site-header > .button { display: none; }
  h1 { font-size: clamp(3.5rem, 18vw, 5.5rem); }
  .card-grid, .timeline, .metrics { 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: .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: .01ms !important; animation-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---- 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(--primary); color: var(--white); }
.lang-switch button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (max-width: 720px) {
  .header-actions { gap: .5rem; }
  .lang-switch button { padding: .3rem .42rem; font-size: .68rem; }
}