/* ==========================================================================
   Tiehl Software — hoja de estilos unica
   Arquetipo: gradiente reactivo al mouse · display serif editorial
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  --bg: #0a0a0c;
  --bg-2: #101017;
  --bg-3: #16161f;
  --line: #26262f;
  --line-soft: #1c1c25;
  --ink: #f6f6f8;
  --mute: #9b9bab;
  --mute-2: #6d6d7d;

  --accent: #4f8cff;
  --accent-soft: rgba(79, 140, 255, 0.14);

  --g1: #ff3d81;
  --g2: #6f4bff;
  --g3: #2f8bff;
  --g4: #00d6a3;

  --font-display: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --max: 1200px;
  --pad: clamp(1.25rem, 5vw, 4rem);
  --radius: 18px;
  --radius-sm: 10px;

  --t-fast: 0.18s cubic-bezier(0.22, 1, 0.36, 1);
  --t: 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  --t-slow: 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 400; letter-spacing: -0.02em; line-height: 1.02; }
p { margin: 0; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
::selection { background: var(--accent); color: #fff; }

/* ---------- 3. Tipografia ---------- */
.display { font-family: var(--font-display); font-weight: 400; }
.display em, .h1 em, .h2 em { font-style: italic; color: var(--accent); }

.h1 { font-family: var(--font-display); font-size: clamp(2.9rem, 8.4vw, 6.6rem); line-height: 0.98; }
.h2 { font-family: var(--font-display); font-size: clamp(2.1rem, 5vw, 3.6rem); line-height: 1.04; }
.h3 { font-family: var(--font-display); font-size: clamp(1.5rem, 2.6vw, 2rem); }
.h4 { font-size: 1.06rem; font-weight: 600; letter-spacing: -0.01em; font-family: var(--font-body); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mute-2);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--accent);
  display: inline-block;
}
.lead { font-size: clamp(1.05rem, 1.6vw, 1.28rem); color: var(--mute); max-width: 62ch; }
.muted { color: var(--mute); }
.small { font-size: 0.9rem; }
.center { text-align: center; }

/* ---------- 4. Layout ---------- */
.wrap { max-width: var(--max); margin-inline: auto; padding-inline: var(--pad); }
.wrap--narrow { max-width: 860px; }
.section { padding-block: clamp(4.5rem, 11vw, 9rem); position: relative; }
.section--tight { padding-block: clamp(3rem, 7vw, 5rem); }
.section-head { display: grid; gap: 1.1rem; margin-bottom: clamp(2.5rem, 5vw, 4rem); max-width: 74ch; }

.grid-2 { display: grid; gap: clamp(1.5rem, 4vw, 3.5rem); grid-template-columns: 1fr; }
@media (min-width: 900px) { .grid-2 { grid-template-columns: 1fr 1fr; } }
.grid-2--wide { align-items: start; }
@media (min-width: 900px) { .grid-2--wide { grid-template-columns: 1.15fr 0.85fr; } }
.grid-3 { display: grid; gap: 1.1rem; grid-template-columns: 1fr; }
@media (min-width: 720px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

/* ---------- 5. Skip link ---------- */
.skip {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--accent); color: #fff; padding: 0.7rem 1.1rem; border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }

/* ---------- 6. Nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background var(--t), border-color var(--t), backdrop-filter var(--t);
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: rgba(10, 10, 12, 0.82);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line-soft);
}
.nav-inner {
  max-width: var(--max); margin-inline: auto; padding: 0.9rem var(--pad);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.brand { display: inline-flex; align-items: center; gap: 0.65rem; font-weight: 600; letter-spacing: -0.02em; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 8px; flex: none;
  background: linear-gradient(135deg, var(--g3), var(--g2) 55%, var(--g1));
  display: grid; place-items: center;
  font-family: var(--font-display); font-size: 1rem; color: #fff; line-height: 1;
}
.brand-name { font-size: 1rem; }
.brand-name span { color: var(--mute-2); font-weight: 400; }

.nav-links { display: none; align-items: center; gap: 0.35rem; list-style: none; }
@media (min-width: 1000px) { .nav-links { display: flex; } }
.nav-links a {
  padding: 0.5rem 0.8rem; border-radius: 999px; font-size: 0.93rem; color: var(--mute);
  transition: color var(--t-fast), background var(--t-fast);
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); background: var(--bg-3); }
.nav-cta { display: none; }
@media (min-width: 1000px) { .nav-cta { display: inline-flex; } }

.burger {
  width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 10px;
  display: grid; place-items: center; gap: 5px; align-content: center;
}
@media (min-width: 1000px) { .burger { display: none; } }
.burger span { width: 16px; height: 1.5px; background: var(--ink); display: block; transition: transform var(--t), opacity var(--t-fast); }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.drawer {
  position: fixed; inset: 0; z-index: 99;
  background: var(--bg);
  padding: 6rem var(--pad) 2rem;
  display: grid; align-content: start; gap: 0.2rem;
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity var(--t), transform var(--t), visibility var(--t);
  overflow-y: auto;
}
.drawer.is-open { opacity: 1; visibility: visible; transform: none; }
.drawer a {
  font-family: var(--font-display); font-size: 1.8rem; padding: 0.5rem 0;
  border-bottom: 1px solid var(--line-soft);
}
.drawer .btn { font-family: var(--font-body); font-size: 1rem; margin-top: 1.5rem; border-bottom: 0; justify-self: start; }

/* ---------- 7. Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.55rem;
  padding: 0.86rem 1.5rem; border-radius: 999px;
  font-size: 0.96rem; font-weight: 550; letter-spacing: -0.01em;
  border: 1px solid transparent; cursor: pointer;
  transition: transform var(--t-fast), background var(--t-fast), border-color var(--t-fast), color var(--t-fast), box-shadow var(--t-fast);
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn svg { width: 17px; height: 17px; flex: none; }
.btn--primary { background: var(--accent); color: #fff; box-shadow: 0 8px 30px -12px var(--accent); }
.btn--primary:hover { background: #6ba0ff; box-shadow: 0 14px 40px -14px var(--accent); }
.btn--ghost { border-color: var(--line); color: var(--ink); background: rgba(255, 255, 255, 0.02); }
.btn--ghost:hover { border-color: var(--mute-2); background: rgba(255, 255, 255, 0.05); }
.btn--wa { background: #1faa54; color: #fff; }
.btn--wa:hover { background: #24c261; }
.btn--sm { padding: 0.6rem 1.1rem; font-size: 0.88rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* ---------- 8. Hero ---------- */
.hero { position: relative; padding-top: clamp(7.5rem, 16vw, 11rem); padding-bottom: clamp(3.5rem, 8vw, 6rem); overflow: hidden; }
.hero-gradient {
  position: absolute; inset: -20% -10% auto -10%; height: 130%; z-index: 0; pointer-events: none;
  background:
    radial-gradient(circle 520px at var(--mx, 68%) var(--my, 20%), var(--g2) 0%, transparent 58%),
    radial-gradient(circle 620px at calc(var(--mx, 68%) + 14%) calc(var(--my, 20%) + 16%), var(--g3) 0%, transparent 55%),
    radial-gradient(circle 420px at calc(var(--mx, 68%) - 20%) calc(var(--my, 20%) + 6%), var(--g1) 0%, transparent 52%),
    radial-gradient(circle 380px at 12% 82%, var(--g4) 0%, transparent 55%);
  filter: blur(70px) saturate(135%);
  opacity: 0.32;
  transition: background 0.45s ease-out;
}
.hero-grid {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 25%, #000 20%, transparent 78%);
  mask-image: radial-gradient(ellipse 90% 60% at 50% 25%, #000 20%, transparent 78%);
}
.hero .wrap { position: relative; z-index: 1; }
.hero-title { max-width: 15ch; margin-bottom: 1.6rem; }
.hero-sub { margin-bottom: 2.2rem; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.6rem; margin-bottom: 1.6rem;
  padding: 0.42rem 0.95rem; border: 1px solid var(--line); border-radius: 999px;
  background: rgba(255, 255, 255, 0.025); font-size: 0.83rem; color: var(--mute);
}
.hero-badge b { color: var(--ink); font-weight: 550; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--g4); flex: none; box-shadow: 0 0 0 3px rgba(0, 214, 163, 0.16); }

.hero-facts { display: flex; flex-wrap: wrap; gap: 0.6rem 1.7rem; margin-top: 2.6rem; list-style: none; }
.hero-facts li { display: flex; align-items: center; gap: 0.5rem; font-size: 0.88rem; color: var(--mute); }
.hero-facts svg { width: 15px; height: 15px; color: var(--accent); flex: none; }

/* ---------- 9. Marquee ---------- */
.marquee { border-block: 1px solid var(--line-soft); overflow: hidden; padding-block: 1.1rem; }
.marquee-track { display: flex; gap: 3rem; width: max-content; animation: slide 46s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee span {
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--mute-2); white-space: nowrap; display: inline-flex; align-items: center; gap: 3rem;
}
.marquee span::after { content: "\25C6"; color: var(--accent); font-size: 0.6rem; }
@keyframes slide { to { transform: translateX(-50%); } }

/* ---------- 10. Servicios (lista expandible) ---------- */
.svc-list { list-style: none; border-top: 1px solid var(--line-soft); }
.svc { border-bottom: 1px solid var(--line-soft); }
.svc-head {
  width: 100%; display: grid; grid-template-columns: auto 1fr auto; align-items: center;
  gap: 1rem 1.3rem; padding: clamp(1.4rem, 3vw, 2.1rem) 0; text-align: left;
  transition: color var(--t-fast);
}
.svc-head:hover { color: var(--accent); }
.svc-num { font-family: var(--font-mono); font-size: 0.78rem; color: var(--mute-2); }
.svc-title { font-family: var(--font-display); font-size: clamp(1.45rem, 3.6vw, 2.5rem); line-height: 1.05; letter-spacing: -0.02em; }
.svc-plus {
  width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 50%;
  display: grid; place-items: center; flex: none;
  transition: transform var(--t), border-color var(--t-fast), background var(--t-fast);
}
.svc-head[aria-expanded="true"] .svc-plus { transform: rotate(45deg); border-color: var(--accent); background: var(--accent-soft); }
.svc-plus svg { width: 13px; height: 13px; }
/* Panel plegable. Se anima por max-height y el JS calcula el alto exacto.
   Se prefiere a animar grid-template-rows porque funciona en mas navegadores
   y, si las transiciones no corren, el panel simplemente abre de golpe. */
.svc-panel { overflow: hidden; max-height: 0; transition: max-height var(--t); }
.svc.is-open .svc-panel { max-height: none; }
.svc-body { padding-bottom: 2.2rem; display: grid; gap: 1.4rem; align-items: start; }
@media (min-width: 860px) { .svc-body { grid-template-columns: 1.15fr 1fr; gap: 2.5rem; padding-left: 3.1rem; } }
.svc-body p { color: var(--mute); }
.tags { display: flex; flex-wrap: wrap; gap: 0.45rem; list-style: none; }
.tags li {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.06em;
  padding: 0.34rem 0.7rem; border: 1px solid var(--line); border-radius: 999px; color: var(--mute);
}
.svc-links { display: flex; flex-wrap: wrap; gap: 1rem 1.6rem; align-items: center; }
.link-arrow { display: inline-flex; align-items: center; gap: 0.45rem; color: var(--accent); font-size: 0.94rem; font-weight: 500; }
.link-arrow svg { width: 15px; height: 15px; transition: transform var(--t-fast); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- 11. Cards ---------- */
.card {
  background: linear-gradient(180deg, var(--bg-2), var(--bg-3));
  border: 1px solid var(--line-soft); border-radius: var(--radius);
  padding: clamp(1.4rem, 2.6vw, 2rem); display: grid; gap: 0.85rem; align-content: start;
  transition: border-color var(--t-fast), transform var(--t-fast);
}
.card:hover { border-color: var(--line); transform: translateY(-3px); }
.card p { color: var(--mute); font-size: 0.96rem; }
.card-ico {
  width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); margin-bottom: 0.35rem;
}
.card-ico svg { width: 19px; height: 19px; }
.card--link:hover { border-color: var(--accent); }
.card ul { display: grid; gap: 0.5rem; list-style: none; }
.card ul li { color: var(--mute); font-size: 0.94rem; padding-left: 1.3rem; position: relative; }
.card ul li::before { content: "\2192"; position: absolute; left: 0; color: var(--accent); }

/* ---------- 12. Proceso ---------- */
.steps { list-style: none; display: grid; gap: 0; counter-reset: step; border-top: 1px solid var(--line-soft); }
.step {
  counter-increment: step; border-bottom: 1px solid var(--line-soft);
  padding-block: clamp(1.5rem, 3vw, 2.2rem);
  display: grid; gap: 0.5rem 2rem; grid-template-columns: 1fr;
}
@media (min-width: 820px) { .step { grid-template-columns: 6rem 1fr 1.1fr; align-items: start; } }
.step::before {
  content: "0" counter(step);
  font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent); letter-spacing: 0.1em;
}
.step p { color: var(--mute); font-size: 0.97rem; }

/* ---------- 13. Stats ---------- */
.stats {
  list-style: none; display: grid; gap: 1px; grid-template-columns: repeat(2, 1fr);
  background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: var(--radius); overflow: hidden;
}
@media (min-width: 880px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat { background: var(--bg-2); padding: clamp(1.3rem, 3vw, 2rem); display: grid; gap: 0.35rem; align-content: start; }
.stat-num { font-family: var(--font-display); font-size: clamp(2.1rem, 4.4vw, 3rem); line-height: 1; color: var(--ink); }
.stat-num small { font-size: 0.5em; color: var(--accent); }
.stat-label { font-size: 0.87rem; color: var(--mute); }

/* ---------- 14. Casos ---------- */
.case { border: 1px solid var(--line-soft); border-radius: var(--radius); overflow: hidden; background: var(--bg-2); display: grid; align-content: start; }
.case-top { padding: clamp(1.4rem, 3vw, 2rem); display: grid; gap: 0.9rem; align-content: start; }
.case-kicker { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
.case-top p { color: var(--mute); font-size: 0.96rem; }
.case-metrics { list-style: none; display: grid; gap: 1px; grid-template-columns: repeat(2, 1fr); background: var(--line-soft); border-top: 1px solid var(--line-soft); }
.case-metrics li { background: var(--bg-2); padding: 1rem clamp(1.4rem, 3vw, 2rem); }
.case-metrics b { display: block; font-family: var(--font-display); font-size: 1.5rem; line-height: 1.1; }
.case-metrics span { font-size: 0.8rem; color: var(--mute); }

/* ---------- Fotos ---------- */
.photo {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); background: var(--bg-2);
  box-shadow: 0 30px 60px -34px rgba(0, 0, 0, 0.85);
}
.photo img { width: 100%; height: auto; display: block; }
/* Velo que integra la foto con el fondo oscuro del sitio */
.photo::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(79, 140, 255, 0.07) 0%, transparent 38%, rgba(10, 10, 12, 0.38) 100%);
}
.photo--tag { position: relative; }
.photo-tag {
  position: absolute; left: 1rem; bottom: 1rem; z-index: 2;
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.5rem 0.9rem; border-radius: 999px;
  background: rgba(10, 10, 12, 0.72); border: 1px solid var(--line);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  font-size: 0.82rem; color: var(--ink);
}
.photo-tag b { font-weight: 600; }
.photo-tag span { color: var(--mute); }
.photo-caption { margin-top: 0.95rem; font-size: 0.86rem; color: var(--mute-2); max-width: 46ch; }

/* Retrato chico para columnas laterales */
.photo--aside { margin-bottom: 1.1rem; }

/* Mock decorativo de interfaz */
.mock { border: 1px solid var(--line-soft); border-radius: var(--radius); overflow: hidden; background: var(--bg-2); }
.mock-bar { display: flex; align-items: center; gap: 0.4rem; padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--line-soft); background: var(--bg-3); }
.mock-bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--line); display: block; }
.mock-bar i:first-child { background: #ff5f57; }
.mock-bar i:nth-child(2) { background: #febc2e; }
.mock-bar i:nth-child(3) { background: #28c840; }
.mock-bar span { margin-left: auto; font-family: var(--font-mono); font-size: 0.68rem; color: var(--mute-2); }
.mock-body { padding: 1.1rem; display: grid; gap: 0.65rem; }
.mock-row { display: grid; grid-template-columns: 1.6fr 1fr 0.7fr; gap: 0.7rem; align-items: center; }
.mock-row i { height: 9px; border-radius: 4px; background: var(--line); display: block; }
.mock-row i.soft { background: var(--line-soft); }
.mock-row i.on { background: linear-gradient(90deg, var(--accent), var(--g2)); }
.mock-foot { display: flex; justify-content: space-between; padding: 0.9rem 1.1rem; border-top: 1px solid var(--line-soft); font-family: var(--font-mono); font-size: 0.7rem; color: var(--mute-2); }

/* ---------- 15. FAQ ---------- */
.faq { list-style: none; border-top: 1px solid var(--line-soft); }
.faq-item { border-bottom: 1px solid var(--line-soft); }
.faq-q {
  width: 100%; text-align: left; padding: 1.25rem 0; display: flex; gap: 1rem; align-items: baseline;
  justify-content: space-between; font-size: 1.04rem; font-weight: 500; transition: color var(--t-fast);
}
.faq-q:hover { color: var(--accent); }
.faq-q i { font-family: var(--font-mono); font-style: normal; color: var(--accent); flex: none; transition: transform var(--t); }
.faq-q[aria-expanded="true"] i { transform: rotate(45deg); }
.faq-a { overflow: hidden; max-height: 0; transition: max-height var(--t); }
.faq-item.is-open .faq-a { max-height: none; }
.faq-a p { color: var(--mute); padding-bottom: 1.35rem; max-width: 74ch; }

/* ---------- 16. CTA final ---------- */
.cta-band { position: relative; overflow: hidden; border-block: 1px solid var(--line-soft); }
.cta-band::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 70% 120% at 50% 120%, var(--g2) 0%, transparent 62%),
    radial-gradient(ellipse 60% 100% at 15% 0%, var(--g3) 0%, transparent 60%);
  opacity: 0.2; filter: blur(50px);
}
.cta-band .wrap { position: relative; z-index: 1; text-align: center; display: grid; gap: 1.4rem; justify-items: center; }
.cta-mail {
  font-family: var(--font-display); font-size: clamp(1.5rem, 5vw, 3.2rem); line-height: 1.05;
  position: relative; display: inline-block; word-break: break-word;
}
.cta-mail::after {
  content: ""; position: absolute; left: 0; bottom: -0.08em; height: 2px; width: 100%;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform var(--t);
}
.cta-mail:hover::after { transform: scaleX(1); }

/* ---------- 17. Formulario ---------- */
.form { display: grid; gap: 1rem; }
.field { display: grid; gap: 0.45rem; }
.field label { font-size: 0.86rem; color: var(--mute); font-weight: 500; }
.field label .req { color: var(--g1); }
.field input, .field select, .field textarea {
  width: 100%; padding: 0.82rem 1rem; border-radius: var(--radius-sm);
  background: var(--bg-2); border: 1px solid var(--line); color: var(--ink);
  font: inherit; font-size: 0.96rem; transition: border-color var(--t-fast), background var(--t-fast);
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent); background: var(--bg-3); outline: none; }
.field input::placeholder, .field textarea::placeholder { color: var(--mute-2); }
.field select {
  appearance: none; -webkit-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--mute) 50%), linear-gradient(135deg, var(--mute) 50%, transparent 50%);
  background-position: right 1.15rem center, right 0.85rem center;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 2.4rem;
}
.form-row { display: grid; gap: 1rem; }
@media (min-width: 640px) { .form-row { grid-template-columns: 1fr 1fr; } }
.form-note { font-size: 0.82rem; color: var(--mute-2); }
.form-note a { color: var(--mute); text-decoration: underline; text-underline-offset: 3px; }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }
.form-status { font-size: 0.9rem; padding: 0.8rem 1rem; border-radius: var(--radius-sm); display: none; }
.form-status.is-ok { display: block; background: rgba(0, 214, 163, 0.1); border: 1px solid rgba(0, 214, 163, 0.3); color: #7cf0d0; }
.form-status.is-err { display: block; background: rgba(255, 61, 129, 0.1); border: 1px solid rgba(255, 61, 129, 0.3); color: #ff9dbe; }

.contact-aside { display: grid; gap: 0; align-content: start; }
.contact-line { display: flex; gap: 0.9rem; align-items: flex-start; padding: 1.05rem 0; border-bottom: 1px solid var(--line-soft); }
.contact-line svg { width: 18px; height: 18px; color: var(--accent); flex: none; margin-top: 0.28rem; }
.contact-line b { display: block; font-weight: 550; font-size: 0.95rem; }
.contact-line span, .contact-line a { color: var(--mute); font-size: 0.92rem; }
.contact-line a:hover { color: var(--accent); }

/* ---------- 18. Blog / articulos ---------- */
.post-list { list-style: none; display: grid; gap: 1.1rem; }
@media (min-width: 900px) { .post-list--2 { grid-template-columns: 1fr 1fr; } }
.post-card {
  border: 1px solid var(--line-soft); border-radius: var(--radius); padding: clamp(1.3rem, 3vw, 1.9rem);
  background: var(--bg-2); display: grid; gap: 0.7rem; align-content: start;
  transition: border-color var(--t-fast), transform var(--t-fast);
}
.post-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.post-meta { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--mute-2); display: flex; flex-wrap: wrap; gap: 0.8rem; }
.post-card h3 { font-family: var(--font-display); font-size: clamp(1.35rem, 2.6vw, 1.75rem); }
.post-card p { color: var(--mute); font-size: 0.95rem; }

.prose { max-width: 70ch; }
.prose > * + * { margin-top: 1.15rem; }
.prose p, .prose li { color: #cfcfda; font-size: 1.045rem; line-height: 1.75; }
.prose h2 { font-family: var(--font-display); font-size: clamp(1.6rem, 3.4vw, 2.15rem); margin-top: 2.8rem; }
.prose h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.15rem; letter-spacing: -0.01em; margin-top: 2rem; }
.prose ul, .prose ol { padding-left: 1.25rem; display: grid; gap: 0.6rem; }
.prose li { padding-left: 0.25rem; }
.prose li::marker { color: var(--accent); }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose blockquote {
  border-left: 2px solid var(--accent); padding: 0.2rem 0 0.2rem 1.3rem; margin-left: 0;
  font-family: var(--font-display); font-size: 1.35rem; line-height: 1.35; color: var(--ink);
}
.prose table { width: 100%; border-collapse: collapse; font-size: 0.94rem; }
.prose th, .prose td { text-align: left; padding: 0.75rem 0.9rem; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.prose th { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--mute-2); }
.table-scroll { overflow-x: auto; }
.callout {
  border: 1px solid var(--line); border-left: 2px solid var(--accent); border-radius: var(--radius-sm);
  padding: 1.1rem 1.3rem; background: var(--bg-2);
}
.callout p { font-size: 0.97rem; color: var(--mute); }

.article-head { display: grid; gap: 1.2rem; padding-top: clamp(6.5rem, 13vw, 9rem); padding-bottom: clamp(2rem, 4vw, 3rem); }
.article-head h1 { font-family: var(--font-display); font-size: clamp(2.2rem, 5.6vw, 3.9rem); line-height: 1.02; max-width: 20ch; }
.breadcrumb { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--mute-2); display: flex; flex-wrap: wrap; gap: 0.5rem; list-style: none; }
.breadcrumb a:hover { color: var(--accent); }
.byline { display: flex; flex-wrap: wrap; align-items: center; gap: 0.7rem 1.1rem; font-size: 0.88rem; color: var(--mute); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); padding-block: 1rem; }
.byline .avatar {
  width: 34px; height: 34px; border-radius: 50%; flex: none;
  background: linear-gradient(135deg, var(--g3), var(--g2)); display: grid; place-items: center;
  font-family: var(--font-display); color: #fff; font-size: 0.9rem;
}

.ad-slot {
  margin-block: 2.6rem; padding: 0.8rem; border: 1px dashed var(--line); border-radius: var(--radius-sm);
  text-align: center; min-height: 110px; display: grid; place-items: center; align-content: center; gap: 0.5rem;
}
.ad-slot::before {
  content: "Publicidad"; font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--mute-2);
}
.ad-slot ins { display: block; width: 100%; }

/* ---------- 19. Footer ---------- */
.footer { border-top: 1px solid var(--line-soft); padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; background: var(--bg-2); }
.footer-grid { display: grid; gap: 2.2rem; grid-template-columns: 1fr; }
@media (min-width: 700px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 980px) { .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; } }
.footer h4 { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--mute-2); font-weight: 400; margin-bottom: 1rem; }
.footer ul { list-style: none; display: grid; gap: 0.6rem; }
.footer a { color: var(--mute); font-size: 0.93rem; }
.footer a:hover { color: var(--accent); }
.footer-about p { color: var(--mute); font-size: 0.93rem; max-width: 40ch; margin-top: 1rem; }
.footer-bottom {
  margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line-soft);
  display: flex; flex-wrap: wrap; gap: 0.8rem 1.5rem; justify-content: space-between;
  font-size: 0.84rem; color: var(--mute-2);
}

/* ---------- 20. WhatsApp flotante ---------- */
.wa-float {
  position: fixed; right: 1.1rem; bottom: 1.1rem; z-index: 90;
  width: 54px; height: 54px; border-radius: 50%; background: #1faa54; color: #fff;
  display: grid; place-items: center; box-shadow: 0 10px 30px -8px rgba(0, 0, 0, 0.6);
  transition: transform var(--t-fast), background var(--t-fast);
}
.wa-float:hover { transform: scale(1.06); background: #24c261; }
.wa-float svg { width: 27px; height: 27px; }

/* ---------- 21. Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity var(--t-slow), transform var(--t-slow); }
.reveal.is-in { opacity: 1; transform: none; }
/* Redes de seguridad: si el JS no corre, nada queda invisible.
   El caso sin JavaScript se cubre con el bloque <noscript> de cada pagina. */
.reveal[data-split] { opacity: 1; transform: none; }
html.js-failed .reveal { opacity: 1 !important; transform: none !important; }

@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
  .hero-gradient { transition: none; }
}

/* ---------- 22. Utilidades de impresion ---------- */
@media print {
  .nav, .drawer, .wa-float, .ad-slot, .cta-band { display: none !important; }
  body { background: #fff; color: #000; }
}