body{
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f5f5f5;
    color:#222
}
header{
    background-color: #123c72;
    color: white;
    text-align: center;
    padding: 20px;
}
header nav a{
    color: white;
    margin: 0 10px;
    text-decoration: none;
    font-weight: bold;
}
header nav a:hover{
    text-decoration: underline;
}
.banner{
    text-align: center;
    color: white;
    background-color: #3399ff;
    padding: 20px;
}
.banner img{
    width: 80%;
    max-width: 900px;
    display: block;
    height: auto;
    margin: 0 auto;
    border-radius: 10px; 
    filter: brightness(1.15) contrast(1.05) saturate(1.05);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    transform: translateZ(0);
    image-rendering: crisp-edges;
}

.banner h2{
    margin-top: 15px;
}
.books{
    background-color: white;
    padding: 30px;
    text-align: center;
}
.book-list{
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.book-row{
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: nowrap; 
}
.book{
    width: 200px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 10px;
}
.book img{
    width: 100%;
    border-radius: 10px;
}
.book p{
    font-weight: bold;
    margin-top: 10px;
}
.hh{
    padding: 40px 20px;
    background: linear-gradient(135deg, #eaf4ff 0%, #ffffff 100%);
    color: #073a7a;
}
.hh-inner{
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 24px;
    align-items: center;
}
.hh-figure img{
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(7,58,122,0.12);
    display: block;
}
.hh-text h2{
    margin: 0 0 8px;
    color: #042a57;
    font-size: 1.6rem;
}
.hh-text .lead{
    font-weight: 700;
    margin: 0 0 8px;
    color: #0b466f;
}
.hh-text p{
    margin: 6px 0;
    line-height: 1.6;
    color: #154a7a;
}
.hh-text .cta{
    display: inline-block;
    margin-top: 12px;
    background: #123c72;
    color: #fff;
    padding: 8px 14px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 700;
}
.footer{
    background: #123c72;
    color: white;
    text-align: center;
    padding: 20px;
}
.footer a{
    color: #a9d2ff;
}
footer a:hover{
    text-decoration: underline;
}
.copyr{
    margin-top: 10px;
    opacity: 0.8;
}
.img{
    overflow-clip-margin: content-box;
    overflow: clip;
}

html {
    scroll-behavior: smooth;
}
@media (max-width: 760px){
    .hh-inner{
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hh-figure img{
        height: 220px;
        margin: 0 auto;
    }
    .hh-text .cta{ margin-left: 0; }
}