:root{
--bg:#f4f7fb;
--card:#ffffff;
--text:#1f2937;
--accent:#1d4ed8;
--dark:#0f172a;
}
*{box-sizing:border-box}
body{
margin:0;
font-family:Inter,Arial,sans-serif;
background:var(--bg);
color:var(--text);
line-height:1.75;
}
header{
background:var(--dark);
color:#fff;
padding:28px;
}
header h1{margin:0;font-size:2.2rem}
nav{margin-top:14px}
nav a{
color:#fff;
text-decoration:none;
margin-right:16px;
display:inline-block;
margin-bottom:10px;
}
.container{
width:92%;
max-width:1180px;
margin:auto;
padding:28px 0;
}
.hero{
padding:40px 0;
}
.grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
gap:22px;
}
.card{
background:var(--card);
padding:24px;
border-radius:12px;
box-shadow:0 2px 12px rgba(0,0,0,.07);
margin-bottom:24px;
}
.button{
display:inline-block;
background:var(--accent);
color:#fff;
padding:12px 18px;
border-radius:8px;
text-decoration:none;
}
footer{
background:var(--dark);
color:#fff;
padding:30px;
margin-top:40px;
}
input{
width:100%;
padding:12px;
margin:10px 0;
border-radius:6px;
border:1px solid #cbd5e1;
}
button{
background:var(--dark);
color:#fff;
padding:12px 18px;
border:none;
border-radius:8px;
cursor:pointer;
}
.result{
margin-top:18px;
font-weight:bold;
font-size:1.1rem;
}
ul li{margin-bottom:10px}
.meta{
font-size:.9rem;
color:#64748b;
}
@media(max-width:768px){
header h1{font-size:1.8rem}
nav a{display:block}
}