/* SanSang KTX - style toi gian cho site tinh (sinh tu WebsiteXuat). */
:root{--muc:#1f2a37;--nhan:#2563eb;--nen:#ffffff;--xam:#f3f4f6;}
*{box-sizing:border-box;}
body{margin:0;font-family:system-ui,Segoe UI,Roboto,Arial,sans-serif;color:var(--muc);background:var(--nen);line-height:1.6;}
main,header.site-head,footer.site-foot{max-width:960px;margin:0 auto;padding:16px;}
header.site-head nav{display:flex;flex-wrap:wrap;gap:12px;border-bottom:1px solid #e5e7eb;padding-bottom:10px;}
header.site-head nav a{color:var(--nhan);text-decoration:none;font-weight:600;}
header.site-head nav a:hover{text-decoration:underline;}
h1{font-size:1.6rem;line-height:1.3;}
h2{font-size:1.25rem;margin-top:1.4em;}
section{margin:16px 0;}
ul{padding-left:1.2em;}
.hero{background:var(--xam);padding:16px;border-radius:10px;}
form{display:grid;gap:8px;max-width:520px;margin-top:12px;}
input,textarea,select,button{font:inherit;padding:8px;border:1px solid #cbd5e1;border-radius:8px;}
button{background:var(--nhan);color:#fff;border:0;cursor:pointer;font-weight:600;}
footer.site-foot{border-top:1px solid #e5e7eb;color:#6b7280;font-size:.9rem;padding-top:12px;margin-top:24px;}