/* ===== Quercus Drones — teal + antracita ===== */
:root{
  --antra:#1e262b; --antra2:#2b353b; --antra3:#141b1f;
  --teal:#14b8a6; --teal-d:#0f766e; --teal-l:#5eead4;
  --tinta:#172025; --gris:#586065; --gris-cl:#93a0a3;
  --claro:#f4f7f7; --band:#e9f1f0; --blanco:#fff; --linea:#e0e8e7;
  --sombra:0 14px 36px rgba(23,32,37,.13); --radio:12px;
  --fuente:'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--fuente);color:var(--tinta);line-height:1.65;background:var(--blanco);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.contenedor{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
section{padding:90px 0}
h1,h2,h3{line-height:1.18;color:var(--antra);font-weight:800;letter-spacing:-.01em}
h2.titulo{font-size:2.05rem;margin-bottom:10px}
.subtitulo{color:var(--gris);font-size:1.08rem;max-width:730px;margin-bottom:46px}
.centrado{text-align:center;margin-left:auto;margin-right:auto}
.eyebrow{display:inline-block;color:var(--teal-d);font-weight:800;font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:14px}

.btn{display:inline-block;padding:14px 28px;border-radius:40px;font-weight:700;font-size:.98rem;cursor:pointer;border:2px solid transparent;transition:.2s;text-align:center}
.btn-teal{background:var(--teal);color:#06312c}
.btn-teal:hover{background:var(--teal-l);transform:translateY(-2px)}
.btn-linea{border-color:rgba(255,255,255,.55);color:#fff}
.btn-linea:hover{background:rgba(255,255,255,.12)}
.btn-dark{background:var(--antra);color:#fff}
.btn-dark:hover{background:var(--antra2);transform:translateY(-2px)}

/* Header */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--linea)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:74px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.32rem;color:var(--antra)}
.logo .mark{width:36px;height:36px;flex:0 0 36px}
.logo span{color:var(--teal-d)}
.menu{display:flex;align-items:center;gap:30px;list-style:none}
.menu a{font-weight:600;font-size:.96rem;color:var(--antra);transition:.2s}
.menu a:hover{color:var(--teal-d)}
.menu .btn{padding:10px 20px}
.hamb{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.hamb span{width:26px;height:3px;background:var(--antra);border-radius:3px;transition:.3s}

/* Hero con foto */
.hero{position:relative;min-height:600px;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero .bg{position:absolute;inset:0;z-index:0}
.hero .bg img{width:100%;height:100%;object-fit:cover}
.hero .bg::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(20,27,31,.94) 8%,rgba(20,27,31,.80) 42%,rgba(15,118,110,.55) 100%)}
.hero .contenedor{position:relative;z-index:2;padding-top:70px;padding-bottom:70px;max-width:900px}
.hero h1{color:#fff;font-size:3.1rem;margin-bottom:20px}
.hero h1 em{color:var(--teal-l);font-style:normal}
.hero p{font-size:1.22rem;color:#d6e2e0;max-width:660px;margin-bottom:34px}
.hero .acciones{display:flex;gap:16px;flex-wrap:wrap}
.hero .sello{margin-top:42px;display:flex;gap:26px;flex-wrap:wrap;color:#b7c6c4;font-size:.9rem;font-weight:600}
.hero .sello span{display:flex;align-items:center;gap:8px}
.hero .sello span::before{content:"✓";color:var(--teal-l);font-weight:800}

/* Grids / tarjetas con foto */
.grid{display:grid;gap:26px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--blanco);border:1px solid var(--linea);border-radius:var(--radio);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px);box-shadow:var(--sombra);border-color:transparent}
.card .foto{position:relative;height:190px;background:var(--antra2);overflow:hidden}
.card .foto img{width:100%;height:100%;object-fit:cover;transition:.4s}
.card:hover .foto img{transform:scale(1.06)}
.card .foto .etq{position:absolute;left:14px;bottom:14px;background:var(--teal);color:#06312c;font-weight:700;font-size:.72rem;letter-spacing:.04em;text-transform:uppercase;padding:5px 12px;border-radius:30px}
.card .cuerpo{padding:24px 24px 28px}
.card h3{font-size:1.16rem;margin-bottom:8px;color:var(--antra)}
.card p{color:var(--gris);font-size:.97rem}

/* Sectores */
.sectores{background:var(--claro)}
.tags{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;max-width:840px;margin:0 auto}
.tag{background:#fff;border:1px solid var(--linea);border-radius:40px;padding:12px 22px;font-weight:600;color:var(--antra);font-size:.96rem}

/* Banda con foto + stats */
.banda{position:relative;color:#fff;text-align:center;padding:92px 0;overflow:hidden}
.banda .bg{position:absolute;inset:0;z-index:0}
.banda .bg img{width:100%;height:100%;object-fit:cover}
.banda .bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,27,31,.9),rgba(15,118,110,.78))}
.banda .contenedor{position:relative;z-index:2}
.banda h2{color:#fff;font-size:1.9rem;margin-bottom:34px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;max-width:900px;margin:0 auto}
.stat .n{font-size:2.4rem;font-weight:800;color:var(--teal-l);line-height:1}
.stat .t{color:#cdd9d7;font-size:.95rem;margin-top:6px}

/* Proceso */
.pasos{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;counter-reset:paso}
.paso{position:relative;padding:30px 22px;background:var(--antra);color:#fff;border-radius:var(--radio)}
.paso::before{counter-increment:paso;content:counter(paso);position:absolute;top:-16px;left:22px;width:40px;height:40px;background:var(--teal);color:#06312c;font-weight:800;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.1rem}
.paso h3{color:#fff;font-size:1.05rem;margin:14px 0 8px}
.paso p{color:#c2ccce;font-size:.92rem}

/* Por qué */
.porque{background:var(--band)}
.beneficios{display:grid;grid-template-columns:repeat(2,1fr);gap:18px 40px;max-width:920px;margin:0 auto}
.beneficio{display:flex;gap:14px;align-items:flex-start}
.beneficio .b-ico{flex:0 0 27px;width:27px;height:27px;border-radius:50%;background:var(--teal);color:#06312c;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem;margin-top:3px}
.beneficio h4{color:var(--antra);font-size:1.03rem;margin-bottom:2px}
.beneficio p{color:var(--gris);font-size:.94rem}

/* Contacto */
.contacto-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:50px;align-items:start}
.contacto-info h3{font-size:1.3rem;margin-bottom:16px;color:var(--antra)}
.contacto-info .dato{display:flex;gap:12px;align-items:center;margin-bottom:14px;color:var(--gris);font-size:1rem}
.contacto-info .dato b{color:var(--antra)}
.contacto-info .dato .ci{width:38px;height:38px;flex:0 0 38px;border-radius:10px;background:var(--band);display:flex;align-items:center;justify-content:center}
form .fila{display:grid;grid-template-columns:1fr 1fr;gap:16px}
form label{display:block;font-weight:600;font-size:.9rem;color:var(--antra);margin:0 0 6px}
form input,form select,form textarea{width:100%;padding:13px 15px;border:1px solid var(--linea);border-radius:10px;font-family:inherit;font-size:.98rem;margin-bottom:16px;background:#fff;transition:.2s}
form input:focus,form select:focus,form textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(20,184,166,.16)}
form textarea{min-height:130px;resize:vertical}
.hp{position:absolute;left:-5000px}
.aviso{padding:14px 18px;border-radius:10px;margin-bottom:22px;font-weight:600;font-size:.95rem}
.aviso.ok{background:#e2f6f1;color:#0b6b57;border:1px solid #b6e6da}
.aviso.err{background:#fbeaea;color:#8a2b2b;border:1px solid #f0c4c4}

/* Footer */
footer{background:var(--antra3);color:#aeb9bb;padding:50px 0 26px;font-size:.92rem}
.foot-in{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px;align-items:center}
.foot-in .logo{color:#fff}
.foot-in .logo span{color:var(--teal-l)}
.foot-links{display:flex;gap:22px;flex-wrap:wrap}
.foot-links a:hover{color:var(--teal-l)}
.foot-legal{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:20px;text-align:center;color:var(--gris-cl);font-size:.84rem}

@media(max-width:900px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .pasos,.stats{grid-template-columns:repeat(2,1fr);row-gap:34px}
  .contacto-grid{grid-template-columns:1fr;gap:34px}
  .hero h1{font-size:2.4rem}
}
@media(max-width:640px){
  section{padding:64px 0}
  .grid-3,.beneficios{grid-template-columns:1fr}
  .pasos,.stats{grid-template-columns:1fr}
  .menu{position:fixed;inset:74px 0 auto 0;background:#fff;flex-direction:column;gap:0;padding:10px 0;border-bottom:1px solid var(--linea);box-shadow:var(--sombra);display:none}
  .menu.abierto{display:flex}
  .menu li{width:100%;text-align:center}
  .menu li a{display:block;padding:14px}
  .menu .btn{margin:10px 24px}
  .hamb{display:flex}
  .hero{min-height:520px}
  .hero h1{font-size:2.05rem}
  .hero p{font-size:1.08rem}
  form .fila{grid-template-columns:1fr}
  h2.titulo{font-size:1.6rem}
}