:root {
  --teal: #0f7c86;
  --teal-dark: #0a5c64;
  --green: #5fae3e;
  --ink: #1b2a33;
  --muted: #5b6b75;
  --bg: #ffffff;
  --bg-alt: #f2f7f8;
  --border: #dde7ea;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(15, 60, 70, .08);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--teal); }
h1, h2 { line-height: 1.2; margin: 0 0 .6em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); }

.container { width: min(1100px, 100% - 32px); margin-inline: auto; }

/* Botones */
.btn {
  display: inline-block;
  background: var(--teal);
  color: #fff;
  border: 2px solid var(--teal);
  padding: .8em 1.5em;
  border-radius: 999px;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background .2s, transform .2s;
}
.btn:hover { background: var(--teal-dark); border-color: var(--teal-dark); transform: translateY(-1px); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.7); }
.btn--ghost:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.btn--sm { padding: .5em 1.1em; }
.btn:disabled { opacity: .6; cursor: wait; transform: none; }

/* Header */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand img { height: 48px; width: auto; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a:not(.btn) { color: var(--ink); text-decoration: none; font-weight: 500; }
.nav a:not(.btn):hover { color: var(--teal); }
.nav .btn { color: #fff; }

.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; transition: .25s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--teal-dark) 0%, var(--teal) 55%, var(--green) 130%);
  color: #fff;
  padding: clamp(64px, 12vw, 120px) 0;
}
.hero__inner { max-width: 760px; }
.hero h1 { font-size: clamp(1.9rem, 5vw, 3rem); font-weight: 800; }
.hero h1 span { color: #c9f0b5; }
.hero p { font-size: 1.15rem; opacity: .92; margin: 0 0 2em; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Secciones */
.section { padding: clamp(56px, 9vw, 96px) 0; }
.section--alt { background: var(--bg-alt); }
.tag {
  display: inline-block;
  font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--green);
  margin-bottom: .6em;
}

.product { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
.product__intro p { color: var(--muted); }

.features {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}
.features li {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  color: var(--muted);
  font-size: .95rem;
  box-shadow: var(--shadow);
}
.features strong { display: block; color: var(--ink); margin-bottom: .3em; font-size: 1.02rem; }
.features strong::before {
  content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: var(--green); margin-right: 8px; vertical-align: middle;
}

/* Contacto */
.contact { display: grid; grid-template-columns: 1fr 1.3fr; gap: 48px; }
.contact__info p { color: var(--muted); }
.contact__list { list-style: none; padding: 0; margin: 24px 0 0; }
.contact__list li { padding: 12px 0; border-bottom: 1px solid var(--border); }
.contact__list span { display: block; font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }

.form {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: clamp(20px, 4vw, 32px);
}
.form label { display: grid; gap: 6px; font-weight: 500; font-size: .95rem; }
.form label:nth-of-type(n+5), .form button, .form__status { grid-column: 1 / -1; }
.form small { color: var(--muted); font-weight: 400; }
.form input, .form select, .form textarea {
  font: inherit; color: inherit;
  width: 100%;
  padding: .75em .9em;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}
.form textarea { resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(15,124,134,.15);
}
.form .invalid { border-color: #d64545; }
.form button { justify-self: start; }
.form__status { margin: 0; font-weight: 500; min-height: 1.4em; }
.form__status.ok { color: #2e7d32; }
.form__status.error { color: #c62828; }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }

/* Footer */
.footer { background: var(--ink); color: #b7c4cb; padding: 24px 0; font-size: .9rem; text-align: center; }

/* WhatsApp flotante */
.wa-float {
  position: fixed; right: 20px; bottom: 20px; z-index: 60;
  width: 56px; height: 56px; border-radius: 50%;
  background: #25d366; color: #fff;
  display: grid; place-items: center;
  box-shadow: 0 6px 20px rgba(0,0,0,.2);
  transition: transform .2s;
}
.wa-float:hover { transform: scale(1.08); }

/* Responsive */
@media (max-width: 860px) {
  .product, .contact { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 700px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--border);
    padding: 8px 16px 16px;
    display: none;
  }
  .nav.open { display: flex; }
  .nav a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--border); }
  .nav .btn { margin-top: 12px; text-align: center; }
}

@media (max-width: 560px) {
  .features { grid-template-columns: 1fr; }
  .form { grid-template-columns: 1fr; }
  .form button { justify-self: stretch; }
}