:root{
  /* Naturvilla: blanco y verde, detalle rojo (Champinter) y un toque morado */
  --blanco:#FFFFFF;
  --papel:#F7F8F6;
  --beige:#EBE6DE;
  --tinta:#2B2F33;
  --tinta-fuerte:#161A1D;
  --gris:#5C666E;
  --verde:#2E8B33;
  --verde-osc:#1F6624;
  --verde-claro:#EAF4E7;
  --rojo:#C8102E;
  --morado:#6B4FA3;
  --morado-claro:#EFE9F8;
  --linea:#E2E6E0;
  --ancho:1200px;
  --radio:4px;
  --sombra:0 10px 30px rgba(22,26,29,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--blanco);color:var(--gris);
  font-family:"Segoe UI",Roboto,system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0 0 .7rem;color:var(--tinta-fuerte);line-height:1.2;letter-spacing:-.01em}
h2{font-size:clamp(1.55rem,2.6vw,2.15rem);font-weight:700}
h3{font-size:1.1rem;font-weight:700}
p{margin:0 0 1rem}
.contenedor{max-width:var(--ancho);margin:0 auto;padding:0 clamp(1.1rem,4vw,2.4rem);width:100%}

/* ---------- cabecera ---------- */
.cabecera{
  position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--linea);backdrop-filter:blur(10px);
}
.cabecera::before{content:"";display:block;height:3px;background:linear-gradient(90deg,var(--verde) 0 72%,var(--rojo) 72% 100%)}
.cabecera__interior{
  max-width:var(--ancho);margin:0 auto;padding:.6rem clamp(1.1rem,4vw,2.4rem);
  display:flex;align-items:center;gap:2rem;
}
.marca__logo{height:52px;width:auto}
.menu{margin-left:auto;display:flex;gap:1.6rem;font-size:.78rem;letter-spacing:.13em;text-transform:uppercase;font-weight:600;color:var(--tinta)}
.menu a{padding:.4rem 0;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}
.menu a:hover{color:var(--verde-osc);border-color:var(--verde)}

/* ---------- portada ---------- */
.hero{position:relative;height:clamp(520px,86vh,760px);display:flex;align-items:center;justify-content:center;background:#111}
.hero__fondo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero__velo{position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,16,14,.55),rgba(12,16,14,.42) 45%,rgba(12,16,14,.62))}
.hero__texto{position:relative;text-align:center;padding:0 1.2rem;max-width:1000px}
.hero__claim{
  color:#fff;font-size:clamp(1.9rem,4.4vw,3.3rem);font-weight:800;line-height:1.16;
  margin:0 0 .9rem;text-shadow:0 3px 20px rgba(0,0,0,.45);
}
.hero__sub{color:#EFF3F0;font-size:clamp(1rem,1.5vw,1.2rem);margin:0;text-shadow:0 2px 12px rgba(0,0,0,.5)}
.hero__flecha{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  width:34px;height:34px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.hero__flecha span{width:16px;height:16px;border-right:2px solid rgba(255,255,255,.9);border-bottom:2px solid rgba(255,255,255,.9);transform:rotate(45deg)}
.hero__flecha span:last-child{margin-top:-9px;opacity:.6}

/* ---------- secciones ---------- */
.seccion{padding:clamp(3rem,6vw,5rem) 0}
.seccion--papel{background:var(--papel)}
.titulo{max-width:80ch;margin:0 auto clamp(2rem,4vw,3rem);text-align:center}
.titulo--centrado{margin-bottom:2.4rem}
.sobre{
  text-transform:uppercase;letter-spacing:.18em;font-size:.74rem;font-weight:700;
  color:var(--verde-osc);margin-bottom:.7rem;
}
.entrada{font-size:1.05rem}

/* ---------- bloques quiénes somos ---------- */
.duo{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.4rem;margin-bottom:2.6rem}
.duo__bloque{background:#fff;border:1px solid var(--linea);border-top:4px solid var(--verde);padding:1.6rem 1.7rem;box-shadow:var(--sombra)}
.duo__bloque:last-child{border-top-color:var(--rojo)}
.tira{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.2rem;border-top:1px solid var(--linea);padding-top:1.8rem}
.tira__item b{display:block;color:var(--verde-osc);font-size:1.4rem;line-height:1.2}
.tira__item span{font-size:.92rem}

/* ---------- producto: círculos ---------- */
.circulos{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1.6rem;justify-items:center;margin-bottom:3rem}
.circulo{text-align:center;max-width:330px}
.circulo__foto{
  width:min(230px,70vw);aspect-ratio:1/1;border-radius:50%;overflow:hidden;
  background:var(--beige);margin:0 auto 1rem;box-shadow:var(--sombra);
}
.circulo__foto img{width:100%;height:100%;object-fit:cover}
.circulo h3{margin-bottom:.3rem}
.circulo p{font-size:.94rem}

/* ficha de calibres */
.ficha{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:2rem;background:#fff;border:1px solid var(--linea);padding:clamp(1.5rem,3vw,2.2rem);box-shadow:var(--sombra)}
.lista{list-style:none;padding:0;margin:0 0 1rem;display:grid;gap:.55rem}
.lista li{position:relative;padding-left:1.5rem}
.lista li::before{content:"";position:absolute;left:0;top:.6em;width:.55rem;height:.55rem;background:var(--verde)}
.lista--sencilla li::before{background:var(--rojo)}
.lista--sencilla b{display:block;color:var(--tinta-fuerte);font-size:1.15rem}
.lista--sencilla span{font-size:.9rem}
.nota{font-size:.92rem;color:var(--gris)}

/* ---------- rejillas y cajas ---------- */
.rejilla{display:grid;gap:1.2rem}
.rejilla--4{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.caja{background:#fff;border:1px solid var(--linea);padding:1.3rem 1.4rem;box-shadow:var(--sombra)}
.caja h3{margin-bottom:.35rem}
.caja p{margin:0;font-size:.94rem}
.caja--dato b{display:block;color:var(--tinta-fuerte);font-size:1.05rem;margin-bottom:.3rem}
.caja--dato span{font-size:.92rem}

/* ---------- comparador ---------- */
.comparador{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:2rem;align-items:start;margin-bottom:2.4rem}
.comparador__caja{position:relative;margin:0;overflow:hidden;border:1px solid var(--linea);background:#111;box-shadow:var(--sombra);touch-action:pan-y}
.comparador__caja img{width:100%;height:auto;user-select:none}
.comparador__despues{position:absolute;inset:0}
.comparador__despues img{height:100%;object-fit:cover}
.comparador__mando{position:absolute;left:0;right:0;bottom:12px;width:calc(100% - 32px);margin:0 16px;appearance:none;background:transparent;height:28px;cursor:ew-resize}
.comparador__mando::-webkit-slider-runnable-track{height:4px;background:rgba(255,255,255,.65);border-radius:2px}
.comparador__mando::-webkit-slider-thumb{appearance:none;width:26px;height:26px;margin-top:-11px;border-radius:50%;background:var(--verde);border:3px solid #fff;box-shadow:0 2px 10px rgba(0,0,0,.45)}
.comparador__mando::-moz-range-track{height:4px;background:rgba(255,255,255,.65);border-radius:2px}
.comparador__mando::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:var(--verde);border:3px solid #fff}
.comparador__pista{position:absolute;top:12px;left:12px;background:rgba(17,20,18,.8);color:#fff;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;padding:.32rem .7rem}
.cifras{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(105px,1fr));gap:1rem;padding:0;margin:1.2rem 0}
.cifras b{display:block;font-size:1.45rem;color:var(--verde-osc);line-height:1.2}
.cifras span{font-size:.84rem}
.mini-grafico{background:#fff;border:1px solid var(--linea);padding:.5rem;margin-top:1rem;max-width:440px}
.honesto{border-left:4px solid var(--verde);background:var(--verde-claro);padding:1.1rem 1.3rem;margin:2rem 0 0;color:var(--tinta);font-size:.95rem}

/* ---------- tabla ---------- */
.tabla-caja{overflow-x:auto;border:1px solid var(--linea);background:#fff;margin-top:2.4rem;box-shadow:var(--sombra)}
.tabla{border-collapse:collapse;width:100%;min-width:640px;font-size:.95rem}
.tabla th{text-align:left;background:var(--verde-claro);color:var(--verde-osc);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;padding:.9rem 1.1rem;border-bottom:1px solid var(--linea)}
.tabla td{padding:.95rem 1.1rem;border-bottom:1px solid var(--linea);vertical-align:top}
.tabla tr:last-child td{border-bottom:0}
.tabla td:first-child{color:var(--tinta-fuerte);font-weight:600}
.pildora{display:inline-block;padding:.25rem .65rem;font-size:.74rem;font-weight:700;white-space:nowrap}
.pildora--verde{background:var(--verde-claro);color:var(--verde-osc);border:1px solid #C6E0BF}
.pildora--morada{background:var(--morado-claro);color:#4B3379;border:1px solid #D3C4E9}
.pildora--gris{background:#F1F3F2;color:var(--gris);border:1px solid var(--linea)}

/* ---------- contacto ---------- */
.contenedor--contacto{display:flex;align-items:center;gap:2.5rem;flex-wrap:wrap}
.contacto{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:2rem;flex:1 1 520px}
.contacto__bloque h2{margin-bottom:.6rem}
.contacto__logo{margin-left:auto;height:74px;width:auto}
@media (max-width:760px){.contacto__logo{margin:0 auto}}

/* ---------- pie ---------- */
.pie{background:#F1F3F2;border-top:1px solid var(--linea);padding:1.6rem 0;text-align:center}
.pie__interior p{margin:0;font-size:.9rem}
.pie__fino{color:var(--gris);font-size:.82rem;margin-top:.35rem !important}

/* ---------- animación ---------- */
.revela{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.revela.visible{opacity:1;transform:none}

@media (max-width:980px){
  .menu{display:none}
  .ficha{grid-template-columns:1fr}
  .comparador{grid-template-columns:1fr}
}
@media (max-width:620px){
  .marca__logo{height:42px}
  .hero{height:clamp(460px,74vh,620px)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .revela{opacity:1;transform:none;transition:none}
}