*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:'Poppins',Arial,sans-serif;color:#0B1446;background:#FFF9E6;line-height:1.55}
a{color:#D9261C}
header{background:#0B1446;padding:14px 16px}
header .in{max-width:1040px;margin:0 auto;display:flex;align-items:center;gap:14px}
header img{height:64px;width:auto}
header a.home{color:#fff;text-decoration:none;font-weight:600;margin-left:auto;font-size:15px}
.hero{background:linear-gradient(180deg,#162878,#0B1446);color:#fff;padding:40px 16px 56px}
.hero .in{max-width:1040px;margin:0 auto;display:grid;grid-template-columns:minmax(0,300px) 1fr;gap:40px;align-items:center}
.hero img.cover{width:100%;border-radius:12px;box-shadow:0 12px 36px rgba(0,0,0,.45)}
.tag{display:inline-block;background:#FFCC2E;color:#0B1446;font-weight:700;border-radius:99px;padding:4px 14px;font-size:14px}
h1{font-size:clamp(28px,5vw,46px);line-height:1.15;margin:14px 0 12px}
h1 span{color:#FFCC2E}
.hero p{font-size:18px;color:#E3E7FF;margin:0 0 10px}
main{max-width:1040px;margin:0 auto;padding:40px 16px 56px}
.card{background:#fff;border:4px solid #FFCC2E;border-radius:22px;padding:28px 24px;margin-bottom:28px}
.card h2{margin:0 0 14px;font-size:26px}
ul.check{list-style:none;padding:0;margin:0 0 18px}
ul.check li{padding-left:38px;position:relative;margin:10px 0;font-size:17px}
ul.check li:before{content:'\2713';position:absolute;left:0;top:0;width:26px;height:26px;border-radius:50%;background:#D9261C;color:#fff;font-size:15px;font-weight:700;display:flex;align-items:center;justify-content:center}
img.preview{width:100%;height:auto;border-radius:10px;border:1px solid #e5e5e5}
.form{background:#0B1446;color:#fff;border-radius:22px;padding:28px 24px}
.form h2{color:#FFCC2E;margin-top:0}
.form small{color:#C9D0F5;display:block;margin-top:14px;font-size:13px}
.form small a{color:#FFCC2E}
.note{background:#162878;border:2px dashed #FFCC2E;border-radius:14px;padding:18px;font-size:15px}
.btn{display:inline-block;background:#FFCC2E;color:#0B1446;font-weight:700;text-decoration:none;border-radius:99px;padding:14px 26px;font-size:18px}
.books{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.books a{text-decoration:none;color:#0B1446;font-weight:600;text-align:center}
.books img{width:100%;border-radius:10px;box-shadow:0 6px 18px rgba(11,20,70,.25);margin-bottom:8px}
footer{background:#0B1446;color:#C9D0F5;text-align:center;padding:26px 16px;font-size:14px}
footer a{color:#FFCC2E}
@media (max-width:720px){.hero .in{grid-template-columns:1fr}.hero img.cover{max-width:260px;margin:0 auto;display:block}.books{grid-template-columns:1fr}.books img{max-width:300px}}