/* Dereli Fan – Kurumsal Stil */
:root{
 --primary:#1f3b74;
 --primary-dark:#162c55;
 --soft:#eef2fa;
 --bg:#ffffff;
 --text:#1c1f24;
 --muted:#6b7280;
 --border:#e5e7eb;
 --radius:14px;
}
*{box-sizing:border-box}
body{
 margin:0;
 font-family:Inter,Arial,Helvetica,sans-serif;
 background:var(--bg);
 color:var(--text);
 line-height:1.7;
}
header{
 background:#fff;
 border-bottom:1px solid var(--border);
 position:sticky;
 top:0;
 z-index:20;
}
.container{
 max-width:1200px;
 margin:auto;
 padding:24px;
}
.nav{
 display:flex;
 align-items:center;
 justify-content:space-between;
}
.logo{
 display:flex;
 align-items:center;
 gap:12px;
 font-size:22px;
 font-weight:700;
 color:var(--primary);
}
.logo img{height:48px}
.menu a{
 margin-left:22px;
 font-weight:600;
 color:#111;
 text-decoration:none;
}
.menu a:hover{color:var(--primary)}
.hero{
 background:linear-gradient(180deg,var(--soft),#fff);
 padding:90px 0;
}
.hero h1{
 font-size:42px;
 margin:0 0 16px;
}
.hero p{
 max-width:760px;
 color:var(--muted);
 font-size:18px;
}
.btn{
 display:inline-block;
 background:var(--primary);
 color:#fff;
 padding:14px 28px;
 border-radius:10px;
 font-weight:600;
 text-decoration:none;
}
.section{padding:80px 0}
.grid{
 display:grid;
 grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
 gap:28px;
}
.card{
 background:#fff;
 border:1px solid var(--border);
 border-radius:var(--radius);
 padding:26px;
}
.card img{
 width:100%;
 border-radius:12px;
 margin-bottom:14px;
}
footer{
 background:var(--primary-dark);
 color:#fff;
 padding:36px 0;
}
footer p{margin:0;font-size:14px}
input,textarea{
 width:100%;
 padding:12px;
 border:1px solid var(--border);
 border-radius:10px;
 margin-bottom:14px;
 font-size:15px;
}
table{width:100%;border-collapse:collapse}
th,td{border:1px solid var(--border);padding:12px}
.cookie{
 position:fixed;
 bottom:0;left:0;right:0;
 background:#111;color:#fff;
 padding:16px 24px;
 display:flex;justify-content:space-between;align-items:center;
}