:root {
  --bg: #ffffff;
  --bg-alt: #f5f6f8;
  --ink: #0f1b2d;
  --muted: #5b6676;
  --line: #e3e6eb;
  --accent: #1f5eff;
  --accent-ink: #ffffff;
  --radius: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

a { color: inherit; }

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 700; max-width: 18ch; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; margin-bottom: 1.2em; }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0 0 1em; }

/* Cabecera */
.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.top__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; text-decoration: none; letter-spacing: -0.02em; }
.logo__mark { width: 22px; height: 22px; border-radius: 6px; background: var(--accent); box-shadow: 6px 6px 0 -2px var(--ink); }
.logo__tld { color: var(--accent); }

.nav { display: flex; align-items: center; gap: 28px; font-size: .95rem; }
.nav a:not(.btn) { text-decoration: none; color: var(--muted); }
.nav a:not(.btn):hover { color: var(--ink); }

/* Botones */
.btn {
  display: inline-block;
  background: var(--ink);
  color: var(--accent-ink);
  border: 0;
  border-radius: 999px;
  padding: 14px 26px;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background .2s, transform .2s;
}
.btn:hover { background: var(--accent); transform: translateY(-1px); }
.btn--small { padding: 9px 18px; font-size: .9rem; }

.link { font-weight: 600; text-decoration: none; color: var(--accent); }

/* Hero */
.hero { padding: clamp(72px, 12vw, 140px) 0 clamp(64px, 10vw, 120px); }
.eyebrow { color: var(--accent); font-weight: 600; font-size: .85rem; text-transform: uppercase; letter-spacing: .12em; }
.lead { color: var(--muted); font-size: 1.2rem; max-width: 52ch; }
.hero__cta { display: flex; align-items: center; gap: 28px; margin-top: 36px; flex-wrap: wrap; }

/* Secciones */
.section { padding: clamp(64px, 9vw, 110px) 0; }
.section--alt { background: var(--bg-alt); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  background: var(--bg);
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--accent); transform: translateY(-3px); }
.card p { color: var(--muted); margin: 0; }
.card__num { display: block; color: var(--accent); font-weight: 700; font-size: .9rem; margin-bottom: 18px; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; counter-reset: paso; }
.steps li { counter-increment: paso; border-top: 2px solid var(--ink); padding-top: 22px; }
.steps li::before { content: "Paso " counter(paso); display: block; color: var(--muted); font-size: .85rem; margin-bottom: 8px; }
.steps p { color: var(--muted); margin: 0; }

/* Contacto */
.contact { display: grid; grid-template-columns: 1fr 1.4fr; gap: 64px; align-items: start; }
.contact__intro p { color: var(--muted); }
.contact__mail a { color: var(--accent); font-weight: 600; text-decoration: none; }

.form { display: grid; gap: 18px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form label { display: grid; gap: 6px; font-size: .9rem; font-weight: 500; }
.opt { color: var(--muted); font-weight: 400; }
.form input, .form select, .form textarea {
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  width: 100%;
  transition: border-color .2s, box-shadow .2s;
}
.form textarea { resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(31, 94, 255, .12);
}
.form .btn { justify-self: start; }
.hidden { display: none; }

/* Pie */
.foot { border-top: 1px solid var(--line); padding: 28px 0; font-size: .9rem; color: var(--muted); }
.foot__inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.foot a { text-decoration: none; }

/* Página de gracias */
.thanks { min-height: 100vh; display: grid; place-items: center; text-align: center; padding: 20px; }
.thanks p { color: var(--muted); }

/* Móvil */
@media (max-width: 820px) {
  .grid, .steps { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; gap: 32px; }
  .nav a:not(.btn) { display: none; }
}
@media (max-width: 520px) {
  .form__row { grid-template-columns: 1fr; }
}