:root{--blue:#0d6efd;--dark:#1f2937;--light:#f8fafc;--text:#111827;--muted:#6b7280}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:#fff}
a{color:var(--blue);text-decoration:none}
header{background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.08);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 16px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{height:48px}
.brand span{display:block;font-weight:800;color:var(--blue)}
nav ul{display:flex;gap:16px;list-style:none;margin:0;padding:0}
nav a{font-weight:600;color:var(--dark)}
.menu-toggle{display:none;font-size:26px;cursor:pointer}
@media(max-width:768px){nav ul{display:none;flex-direction:column;position:absolute;top:64px;right:10px;background:#fff;border:1px solid #eee;border-radius:10px;padding:10px}nav ul.active{display:flex}.menu-toggle{display:block}}
.hero{padding:40px 16px;text-align:center;background:#f0f7ff}
.hero h1{margin:0 0 8px;font-size:28px}
.btn{background:var(--blue);color:#fff;padding:10px 18px;border-radius:999px;font-weight:700;display:inline-block;margin:6px}
.section{padding:24px 16px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{border:1px solid #eee;border-radius:12px;box-shadow:0 6px 14px rgba(0,0,0,.06);padding:16px}
footer{background:#f8fafc;text-align:center;padding:20px;color:var(--muted);margin-top:30px}
footer a{color:var(--blue);margin:0 8px}
/* slider */
.slider{position:relative;overflow:hidden;border-radius:12px;margin:16px}
.slide{display:none}
.slide.active{display:block}
.slide img{width:100%;height:360px;object-fit:cover}
.controls{position:absolute;top:50%;left:0;right:0;display:flex;justify-content:space-between;transform:translateY(-50%)}
.controls button{background:rgba(0,0,0,.5);color:#fff;border:none;font-size:22px;padding:8px 12px;border-radius:8px;cursor:pointer}
form{display:grid;gap:12px;max-width:600px;margin:20px auto;background:#fff;padding:20px;border-radius:12px;box-shadow:0 6px 14px rgba(0,0,0,.06)}
input,select,textarea{padding:10px;border:1px solid #ddd;border-radius:8px;width:100%}
label{font-weight:700}