:root {
  --ink: #1a2320;
  --ink-soft: #384540;
  --paper: #e9e9e3;
  --surface: #dcdfd5;
  --surface-line: #c6cabd;
  --accent: #3f7a5c;
  --accent-strong: #2e5c44;
  --on-accent: #f4f5f0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eef1ec;
    --ink-soft: #b7c0b8;
    --paper: #171e1b;
    --surface: #212a25;
    --surface-line: #384540;
    --accent: #7bc49b;
    --accent-strong: #9bd6b6;
    --on-accent: #10261a;
  }
}

:root[data-theme="dark"] {
  --ink: #eef1ec;
  --ink-soft: #b7c0b8;
  --paper: #171e1b;
  --surface: #212a25;
  --surface-line: #384540;
  --accent: #7bc49b;
  --accent-strong: #9bd6b6;
  --on-accent: #10261a;
}

:root[data-theme="light"] {
  --ink: #1a2320;
  --ink-soft: #384540;
  --paper: #e9e9e3;
  --surface: #dcdfd5;
  --surface-line: #c6cabd;
  --accent: #3f7a5c;
  --accent-strong: #2e5c44;
  --on-accent: #f4f5f0;
}

* { box-sizing: border-box; }

html { color-scheme: light dark; }

body {
  margin: 0;
  background-color: var(--paper);
  background-image: radial-gradient(var(--surface-line) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--ink);
  font-family: ui-sans-serif, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.mono {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
}

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

svg.icon {
  width: 26px;
  height: 26px;
  stroke: var(--accent-strong);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

.sheet {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 40px) 64px;
}

/* --- Nav --- */

header.top {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: clamp(20px, 5vw, 32px) clamp(20px, 5vw, 40px) 20px;
}

.brand {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--ink);
}
.brand span { color: var(--accent-strong); }

nav.primary {
  display: flex;
  gap: clamp(14px, 3vw, 26px);
  flex-wrap: wrap;
}

nav.primary a {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}
nav.primary a:hover { color: var(--ink); }
nav.primary a[aria-current="page"] {
  color: var(--accent-strong);
  border-bottom-color: var(--accent);
}

.top-rule {
  max-width: 920px;
  margin: 0 auto clamp(40px, 8vw, 84px);
  padding: 0 clamp(20px, 5vw, 40px);
}
.top-rule hr {
  border: 0;
  border-top: 1px solid var(--surface-line);
  margin: 0;
}

/* --- Page header (non-home pages) --- */

.page-head {
  margin-bottom: clamp(40px, 7vw, 72px);
}

.eyebrow {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-strong);
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
}
.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--accent);
  display: inline-block;
}

h1 {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  font-weight: 600;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
  max-width: 20ch;
  text-wrap: balance;
}

.lede {
  max-width: 62ch;
  font-size: clamp(16px, 2vw, 18.5px);
  color: var(--ink-soft);
  margin: 0;
}

/* --- Hero (home only) --- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  align-items: center;
  margin-bottom: clamp(56px, 10vw, 104px);
}
@media (min-width: 760px) {
  .hero { grid-template-columns: minmax(0, 1.15fr) minmax(260px, 360px); }
}
.hero-text { display: flex; flex-direction: column; gap: 22px; }
.hero h1 { max-width: 16ch; font-size: clamp(30px, 5.4vw, 48px); margin: 0; }

.hero-diagram {
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  border: 1px solid var(--surface-line);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.hero-diagram canvas { width: 100%; height: auto; display: block; }
.hero-diagram .caption {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  text-align: center;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 4px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: 14.5px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  font-family: ui-sans-serif, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-strong); }
.btn-ghost { border-color: var(--surface-line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-strong); }

/* --- Sections --- */

section { margin-bottom: clamp(52px, 9vw, 92px); }
section:last-of-type { margin-bottom: clamp(40px, 6vw, 64px); }

.section-head {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  margin-bottom: 26px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--surface-line);
}
.section-head .tag {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

h2 {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  font-size: clamp(20px, 3vw, 25px);
  font-weight: 600;
  margin: 0;
  text-wrap: balance;
}

h3 { font-size: 17px; font-weight: 700; margin: 0 0 8px; }

p { margin: 0 0 14px; }
p:last-child { margin-bottom: 0; }

.prose { max-width: 68ch; color: var(--ink-soft); }
.prose p { margin: 0 0 14px; }

/* --- Modules grid --- */

.modules {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--surface-line);
  border: 1px solid var(--surface-line);
}
.module {
  background: var(--paper);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.module .icon-row { display: flex; align-items: center; justify-content: space-between; }
.module .label {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  font-size: 12px;
  color: var(--ink-soft);
}
.module p { font-size: 14.5px; color: var(--ink-soft); margin: 0; }

/* --- Detailed service block (servicios.html) --- */

.service-block {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 16px;
  padding: 28px 0;
  border-bottom: 1px solid var(--surface-line);
}
.service-block:first-child { padding-top: 0; }
.service-block .icon-col { padding-top: 2px; }
.service-block .label {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  font-size: 11px;
  color: var(--ink-soft);
  display: block;
  margin-top: 8px;
}
.service-block ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 14.5px;
}
.service-block li { margin-bottom: 6px; }

/* --- Steps --- */

.steps { display: flex; flex-direction: column; border-top: 1px solid var(--surface-line); }
.step {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--surface-line);
}
.step .num {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  font-size: 13px;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}
.step p { color: var(--ink-soft); font-size: 14.5px; max-width: 58ch; }
.step .meta {
  margin-top: 10px;
  font-size: 12px;
  color: var(--ink-soft);
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
}

/* --- Generic two-col row (about, contact) --- */

.row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 16px;
}

/* --- Contact --- */

.contact-grid { display: flex; flex-wrap: wrap; gap: 28px 40px; margin-bottom: 8px; }
.contact-item .label {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: block;
  margin-bottom: 6px;
}
.contact-item a, .contact-item span { font-size: 15.5px; font-weight: 600; text-decoration: none; }
.contact-item a:hover { text-decoration: underline; }

/* --- Footer --- */

footer.site {
  max-width: 920px;
  margin: 0 auto;
  padding: 22px clamp(20px, 5vw, 40px) 48px;
  border-top: 1px solid var(--surface-line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
footer.site .fine { font-size: 12.5px; color: var(--ink-soft); }
footer.site nav { display: flex; gap: 16px; }
footer.site nav a {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", "Roboto Mono", Consolas, monospace;
  font-size: 12px;
  color: var(--ink-soft);
  text-decoration: none;
}
footer.site nav a:hover { color: var(--accent-strong); }

@media (prefers-reduced-motion: no-preference) {
  .btn { transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease; }
}

@media (max-width: 560px) {
  .section-head, .service-block, .step, .row {
    grid-template-columns: minmax(0, 1fr);
  }
  .section-head .tag, .step .num, .service-block .icon-col {
    padding-top: 0;
  }
}