/* Estándar de Lavado / NanoForce — B2B negro/carbón + azul neón */
:root {
  --bg: #0a0a0a;
  --bg-elev: #121418;
  --bg-card: #161a20;
  --border: #2a3140;
  --text: #f2f4f7;
  --muted: #a8b0bd;
  --neon: #2ad4ff;
  --neon-dim: #1a9ec4;
  --neon-glow: rgba(42, 212, 255, 0.35);
  --ok: #3dd68c;
  --radius: 12px;
  --max: 1100px;
  --header-h: 64px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--neon); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { width: min(100% - 2rem, var(--max)); margin-inline: auto; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h); gap: 1rem;
}
.logo-link { display: flex; align-items: center; gap: 0.65rem; color: inherit; text-decoration: none; }
.logo-link img { width: 40px; height: 40px; object-fit: contain; }
.logo-text { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.04em; line-height: 1.2; text-transform: uppercase; }
.logo-text span { display: block; color: var(--muted); font-weight: 500; font-size: 0.7rem; letter-spacing: 0.02em; text-transform: none; }
.nav-desktop { display: none; gap: 1.25rem; align-items: center; }
.nav-desktop a { color: var(--muted); font-size: 0.9rem; text-decoration: none; }
.nav-desktop a:hover { color: var(--text); }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.4rem; padding: 0.7rem 1.15rem; border-radius: 999px;
  font-weight: 650; font-size: 0.95rem; border: 1px solid transparent;
  cursor: pointer; text-decoration: none; transition: 0.2s ease;
  font-family: inherit; line-height: 1.2;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--neon); color: #041018;
  box-shadow: 0 0 0 1px rgba(42,212,255,0.25), 0 0 24px var(--neon-glow);
}
.btn-primary:hover { filter: brightness(1.08); box-shadow: 0 0 32px var(--neon-glow); }
.btn-ghost {
  background: transparent; color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--neon); color: var(--neon); }
.btn-full { width: 100%; }
.header-cta { padding: 0.55rem 0.9rem; font-size: 0.85rem; white-space: nowrap; }

/* Sections */
section { padding: 3.5rem 0; }
.section-alt { background: var(--bg-elev); }
.eyebrow {
  display: inline-block; color: var(--neon); font-size: 0.8rem;
  font-weight: 650; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 0.75rem;
}
h1, h2, h3 { line-height: 1.2; margin: 0 0 0.85rem; }
h1 { font-size: clamp(1.75rem, 5vw, 2.6rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.35rem, 3.5vw, 1.85rem); letter-spacing: -0.015em; }
h3 { font-size: 1.05rem; }
.lead { color: var(--muted); font-size: 1.05rem; max-width: 58ch; }
.micro { color: var(--muted); font-size: 0.88rem; margin-top: 0.75rem; }
.quote {
  margin: 1.5rem 0 0; padding: 1rem 1.15rem;
  border-left: 3px solid var(--neon);
  background: rgba(42,212,255,0.06);
  color: var(--text); font-style: italic;
}

/* Hero */
.hero {
  padding: 2.5rem 0 3.5rem;
  background:
    radial-gradient(ellipse 80% 60% at 90% 10%, rgba(42,212,255,0.12), transparent 55%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(26,158,196,0.08), transparent 50%),
    var(--bg);
}
.hero-grid {
  display: grid; gap: 2rem; align-items: center;
}
.hero-visual {
  display: flex; justify-content: center; align-items: center;
}
.hero-visual img {
  width: min(280px, 70vw); opacity: 0.95;
  filter: drop-shadow(0 0 28px var(--neon-glow));
}
.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.35rem; }

/* Cards / grids */
.grid-2 { display: grid; gap: 1.5rem; }
.grid-cards { display: grid; gap: 1rem; }
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.2rem 1.25rem;
}
.card h3 { margin-bottom: 0.4rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.card-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 1.75rem; height: 1.75rem; border-radius: 50%;
  background: rgba(42,212,255,0.12); color: var(--neon);
  font-weight: 700; font-size: 0.85rem; margin-bottom: 0.65rem;
}
.bullets { margin: 1rem 0 0; padding-left: 1.15rem; color: var(--muted); }
.bullets li { margin-bottom: 0.45rem; }
.bullets li::marker { color: var(--neon); }

.rules { display: grid; gap: 1rem; margin-top: 1.5rem; }
.rule-card { border-top: 2px solid var(--neon); }
.closing-line {
  margin-top: 1.5rem; text-align: center; font-weight: 650;
  color: var(--neon); font-size: 1.05rem;
}

.includes { display: grid; gap: 0.85rem; margin-top: 1.5rem; }
.include-item {
  display: grid; grid-template-columns: auto 1fr; gap: 0.85rem;
  padding: 1rem 1.1rem; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius);
}
.include-item .n {
  color: var(--neon); font-weight: 700; font-variant-numeric: tabular-nums;
}
.include-item p { margin: 0.25rem 0 0; color: var(--muted); font-size: 0.92rem; }
.note-box {
  margin-top: 1.25rem; padding: 1rem 1.15rem;
  border: 1px dashed var(--border); border-radius: var(--radius);
  color: var(--muted); font-size: 0.92rem;
}
.center-cta { text-align: center; margin-top: 1.75rem; }

.profile-list { margin: 1rem 0 0; padding-left: 1.15rem; color: var(--muted); }
.profile-list li { margin-bottom: 0.4rem; }
.profile-list strong { color: var(--text); }
.profile-soft {
  margin-top: 1.25rem; padding: 1rem; border-radius: var(--radius);
  background: rgba(42,212,255,0.05); border: 1px solid var(--border);
  color: var(--muted); font-size: 0.95rem;
}

.select-band {
  border: 1px solid var(--neon-dim);
  background: linear-gradient(135deg, rgba(42,212,255,0.08), transparent);
  border-radius: var(--radius); padding: 1.5rem;
}

/* FAQ */
.faq details {
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-card); margin-bottom: 0.65rem; padding: 0.85rem 1rem;
}
.faq summary {
  cursor: pointer; font-weight: 650; list-style: none;
  display: flex; justify-content: space-between; gap: 1rem; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--neon); font-size: 1.2rem; }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 0.75rem 0 0; color: var(--muted); }

/* Form */
.form-wrap {
  display: grid; gap: 2rem; margin-top: 1.5rem;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px); padding: 1.5rem;
}
.form-grid { display: grid; gap: 1rem; }
.field { display: grid; gap: 0.35rem; }
.field label { font-size: 0.88rem; font-weight: 600; }
.field .hint { font-size: 0.78rem; color: var(--muted); font-weight: 400; }
.field input, .field select, .field textarea {
  width: 100%; padding: 0.7rem 0.8rem; border-radius: 8px;
  border: 1px solid var(--border); background: #0d1014; color: var(--text);
  font: inherit;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--neon); outline-offset: 1px; border-color: var(--neon);
}
.field-check { display: flex; gap: 0.6rem; align-items: flex-start; font-size: 0.9rem; color: var(--muted); }
.field-check input { margin-top: 0.25rem; accent-color: var(--neon); }
.form-success {
  display: none; padding: 1rem 1.1rem; border-radius: var(--radius);
  background: rgba(61,214,140,0.12); border: 1px solid rgba(61,214,140,0.4);
  color: var(--ok); margin-bottom: 1rem;
}
.form-success.is-visible { display: block; }
.wa-alt { margin-top: 1rem; font-size: 0.9rem; color: var(--muted); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border); padding: 2.5rem 0 2rem;
  color: var(--muted); font-size: 0.88rem;
}
.footer-grid { display: grid; gap: 1.25rem; }
.footer-brand { display: flex; gap: 0.75rem; align-items: center; }
.footer-brand img { width: 36px; height: 36px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.85rem 1.25rem; }
.footer-links a { color: var(--muted); }
.legal { margin-top: 1.25rem; font-size: 0.78rem; max-width: 70ch; opacity: 0.85; }

@media (min-width: 768px) {
  .nav-desktop { display: flex; }
  .hero-grid { grid-template-columns: 1.15fr 0.85fr; }
  .grid-2 { grid-template-columns: 1fr 1fr; align-items: start; }
  .grid-cards { grid-template-columns: repeat(2, 1fr); }
  .rules { grid-template-columns: repeat(3, 1fr); }
  .includes { grid-template-columns: 1fr 1fr; }
  .form-wrap { grid-template-columns: 0.9fr 1.1fr; }
  .form-grid { grid-template-columns: 1fr 1fr; }
  .form-grid .full { grid-column: 1 / -1; }
  .footer-grid { grid-template-columns: 1.2fr 1fr; align-items: start; }
}
@media (min-width: 1024px) {
  .grid-cards { grid-template-columns: repeat(3, 1fr); }
  .grid-cards.cards-5 { grid-template-columns: repeat(5, 1fr); }
  .grid-cards.cards-4 { grid-template-columns: repeat(4, 1fr); }
}