:root{
  --bg:#0b0f14;
  --card:#0f1620;
  --text:#e8eef6;
  --muted:#a7b2c2;
  --line:rgba(255,255,255,.10);
  --accent:#67e8f9; /* acento sutil */
  --max:980px;
  --radius:16px;
}

*{box-sizing:border-box}
html{height:100%}
body{min-height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background: radial-gradient(ellipse 150% 80% at 50% -20%, rgba(103,232,249,.04) 0%, transparent 60%),
              var(--bg);
  color:var(--text);
  line-height:1.55;
}

a{color:inherit}
.wrap{max-width:var(--max); margin:0 auto; padding:28px 18px 72px}

/* Header */
header{
  position:sticky; top:0;
  backdrop-filter: blur(10px);
  background: rgba(11,15,20,.85);
  border-bottom:1px solid var(--line);
  z-index:10;
}
.nav{
  max-width:var(--max);
  margin:0 auto;
  padding:14px 18px;
  display:flex; align-items:center; justify-content:space-between;
  gap:14px;
}

/* Hamburger */
.nav-toggle{
  display:none;
  background:none; border:none; cursor:pointer;
  padding:4px;
  flex-direction:column; gap:5px;
}
.nav-toggle span{
  display:block; width:20px; height:2px;
  background:var(--text);
  transition: transform .3s, opacity .3s;
}
.nav-toggle.active span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2){ opacity:0; }
.nav-toggle.active span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }
.brand{
  display:flex; align-items:center; gap:10px;
  text-decoration:none;
  font-weight:650;
  letter-spacing:.2px;
}
.dot{
  width:10px; height:10px; border-radius:50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(103,232,249,.12);
}
nav ul{
  list-style:none; margin:0; padding:0;
  display:flex; gap:14px; flex-wrap:wrap;
  font-size:14px;
}
nav a{
  text-decoration:none;
  color:var(--muted);
  padding:8px 10px;
  border-radius:10px;
  border:1px solid transparent;
}
nav a:hover{
  color:var(--text);
  border-color:var(--line);
  background: rgba(255,255,255,.03);
}
.nav-lang{
  border-color:var(--line) !important;
  font-size:12px;
  letter-spacing:.05em;
}
.nav-lang:hover{
  border-color:var(--accent) !important;
  color:var(--accent);
}

/* Layout */
.grid{
  margin-top:22px;
}

/* Cards */
.card{
  background: rgba(15,22,32,.72);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
}
.card h2{
  margin:0 0 16px;
  font-size:18px;
  letter-spacing:.2px;
}
.card p{
  margin:0 0 20px;
}
.card p:last-child{
  margin-bottom:0;
}
.muted{color:var(--muted)}
.kicker{
  color:var(--muted);
  font-size:13px;
  letter-spacing:.22em;
  text-transform:uppercase;
  margin:0 0 8px;
}

/* Hero */
.hero h1{
  font-size:40px;
  line-height:1.05;
  margin:0 0 10px;
  letter-spacing:-.02em;
}
.hero p{margin:0 0 12px}
.hero .role{
  margin:0 0 12px;
  font-weight:650;
}

/* Lists */
.list{
  display:flex; flex-direction:column; gap:6px;
  margin:20px 0;
  padding-left:2px;
}
.item{
  padding:4px 0 4px 16px;
  border-left:2px solid var(--accent);
  color:var(--muted);
}
.item a{ text-decoration:none; }
.item .title{font-weight:500}
.item .meta{font-size:13px; color:var(--muted); margin-top:2px}

/* Tags */
.tags{
  display:flex; flex-wrap:wrap; gap:8px;
  margin:20px 0;
}
.tag{
  font-size:13px;
  padding:5px 12px;
  border:1px solid var(--line);
  border-radius:20px;
  color:var(--muted);
}

/* Section spacing */
section{scroll-margin-top:80px}
.stack{display:flex; flex-direction:column; gap:18px}

/* Footer */
footer{
  margin-top:26px;
  padding-top:18px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:13px;
}

/* Mobile */
@media (max-width: 640px){
  .nav-toggle{ display:flex; }

  nav{
    display:none;
    position:absolute;
    top:100%; left:0; right:0;
    background:var(--bg);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:12px 18px;
  }
  nav.open{
    display:block;
  }
  nav ul{
    flex-direction:column;
    gap:0;
    font-size:15px;
  }
  nav a{
    display:block;
    padding:12px 0;
    border-radius:0;
    border-bottom:1px solid var(--line);
  }
  nav li:last-child a{
    border-bottom:none;
  }
  .nav-lang{
    border:none !important;
    margin-top:4px;
    color:var(--text);
    font-size:14px;
    letter-spacing:.1em;
  }

  .hero h1{ font-size:28px; }
  .kicker{ font-size:11px; letter-spacing:.18em; }
  .card{ padding:18px; border-radius:12px; }
  .card h2{ font-size:16px; }
}