:root {
  --green: #1B5E30;
  --green-dark: #164C27;
  --green-light: #2E8B57;
  --accent: #E6F0E8;
  --ink: #101A12;
  --muted: #6B7E72;
  --bg: #F6F7F5;
  --surface: #FFFFFF;
  --border: rgba(0, 0, 0, 0.07);
  --radius: 20px;
  --serif: "Playfair Display", Georgia, serif;
  --sans: "Plus Jakarta Sans", -apple-system, system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; }

a { color: inherit; text-decoration: none; }

/* Botones */
.btn {
  display: inline-block;
  font-weight: 600;
  border-radius: 14px;
  padding: 14px 26px;
  transition: transform .15s ease, opacity .15s ease, background .15s ease;
  cursor: pointer;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); }
.btn-ghost { background: transparent; color: var(--green); border: 1px solid rgba(27,94,48,.25); }
.btn-ghost:hover { background: var(--accent); }
.btn-small { padding: 9px 18px; background: var(--green); color: #fff; border-radius: 12px; }
.btn-lg { padding: 18px 40px; font-size: 1.05rem; }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(246,247,245,.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--serif); font-weight: 700; font-size: 1.35rem; color: var(--green); }
.brand-icon { width: 30px; height: 30px; border-radius: 8px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--muted); font-weight: 500; font-size: .95rem; }
.nav-links a:hover { color: var(--ink); }
.nav-links .btn-small { color: #fff; }

/* HERO */
.hero { padding: 72px 0 40px; overflow: hidden; }
.hero-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
.lead { font-size: 1.15rem; color: var(--muted); margin-top: 20px; max-width: 42ch; }
.hero-cta { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero-shot { display: flex; justify-content: center; }
.hero-shot img { width: 100%; max-width: 320px; border-radius: 28px; box-shadow: 0 30px 60px rgba(16,26,18,.18); }

/* SECCIONES */
.section { padding: 88px 0; }
.section-alt { background: var(--surface); }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .8rem; font-weight: 700; color: var(--green-light); margin-bottom: 12px; }
.section h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); max-width: 22ch; }

/* PASOS */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 48px; }
.step { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; }
.section-alt .step { background: var(--bg); }
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--accent); color: var(--green);
  font-family: var(--serif); font-weight: 700; font-size: 1.3rem; margin-bottom: 16px;
}
.step h3 { font-size: 1.3rem; margin-bottom: 8px; }
.step p { color: var(--muted); }

/* FEATURES */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; padding: 56px 0; }
.feature.reverse .feature-copy { order: 2; }
.feature h3 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 14px; }
.feature-copy p { color: var(--muted); font-size: 1.08rem; max-width: 46ch; }
.feature-shot { display: flex; justify-content: center; }
.feature-shot img { width: 100%; max-width: 280px; border-radius: 24px; box-shadow: 0 24px 48px rgba(16,26,18,.14); }

/* FAQ */
.faq { margin-top: 40px; max-width: 760px; }
.faq details {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 20px 24px; margin-bottom: 12px;
}
.faq summary { font-weight: 600; cursor: pointer; list-style: none; font-size: 1.05rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--green); font-size: 1.4rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--muted); margin-top: 12px; }

/* CTA FINAL */
.cta-final { background: var(--green); color: #fff; text-align: center; }
.cta-final h2 { color: #fff; margin: 0 auto; }
.cta-final .lead { color: rgba(255,255,255,.85); margin: 16px auto 32px; }
.cta-final .btn-primary { background: #fff; color: var(--green); }
.cta-final .btn-primary:hover { background: var(--accent); }
.cta-note { color: rgba(255,255,255,.7); font-size: .9rem; margin-top: 16px; }

/* FOOTER */
.footer { background: var(--ink); color: rgba(255,255,255,.7); padding: 40px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-family: var(--serif); font-weight: 700; font-size: 1.2rem; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: rgba(255,255,255,.8); font-size: .95rem; }
.footer-links a:hover { color: #fff; }
.footer-copy { font-size: .85rem; width: 100%; text-align: center; padding-top: 8px; }

/* RESPONSIVE */
@media (max-width: 860px) {
  .nav-links a:not(.btn-small) { display: none; }
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-copy .lead { margin-left: auto; margin-right: auto; }
  .hero-cta { justify-content: center; }
  .hero-shot { margin-top: 32px; }
  .steps { grid-template-columns: 1fr; }
  .feature, .feature.reverse { grid-template-columns: 1fr; gap: 28px; text-align: center; }
  .feature.reverse .feature-copy { order: 0; }
  .feature-copy p { margin-left: auto; margin-right: auto; }
  .section h2, .cta-final h2 { max-width: none; }
}