:root{--bg:#0f1115;--card:#181b22;--text:#e8eaf0;--muted:#9aa3b2;--accent:#4f8cff}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{color:var(--accent);text-decoration:none}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
header{position:sticky;top:0;background:rgba(15,17,21,.9);backdrop-filter:blur(8px);border-bottom:1px solid #232733;z-index:10}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);font-weight:700;letter-spacing:.08em}
.brand img{height:40px;width:40px}
nav a{color:var(--muted);margin-left:22px;font-size:.95rem}
nav a:hover{color:var(--text)}
.hero{min-height:78vh;display:flex;align-items:center;background:linear-gradient(rgba(15,17,21,.72),rgba(15,17,21,.9)),url(img/SKULTEC-IMAGEN-SLIDER-PORTADA1.jpg) center/cover}
.hero h1{font-size:clamp(2rem,5vw,3.6rem);line-height:1.1;max-width:15ch}
.hero p{color:var(--muted);margin:18px 0 28px;max-width:52ch;font-size:1.1rem}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:13px 26px;border-radius:10px;font-weight:600}
.btn:hover{filter:brightness(1.1)}
section{padding:80px 0}
h2{font-size:clamp(1.6rem,3vw,2.2rem);margin-bottom:34px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.card{background:var(--card);border:1px solid #232733;border-radius:14px;padding:28px}
.card h3{font-size:1.1rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.95rem}
.contact{text-align:center}
.contact p{color:var(--muted);margin-bottom:22px}
footer{border-top:1px solid #232733;padding:28px 0;color:var(--muted);font-size:.9rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}
footer a{color:var(--muted);margin-left:16px}
.legal{max-width:780px;padding:60px 20px}
.legal h1{margin-bottom:24px}
.legal p,.legal li{color:var(--muted);margin-bottom:12px}
@media(max-width:640px){nav a{margin-left:14px;font-size:.85rem}.brand span{display:none}}