*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Microsoft YaHei",Georgia,serif;background:#faf8f3;color:#1a2744;line-height:1.65}
img{max-width:100%;height:auto;display:block}
a{color:#1a2744;text-decoration:none}
a:hover{text-decoration:underline}
ul{list-style:none}
.container{width:min(1100px,92vw);margin:0 auto}

.letterhead{border-bottom:3px double #c9a227;padding:.85rem 0 .75rem;text-align:center;background:#faf8f3}
.crest{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border:3px solid #c9a227;border-radius:50%;margin-bottom:.45rem;position:relative}
.crest-inner{width:32px;height:32px;border:2px solid #c9a227;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:.75rem;color:#c9a227}
.letterhead-title{font-size:.95rem;font-weight:800;letter-spacing:.12em;color:#1a2744;text-transform:uppercase}
.letterhead-sub{font-size:.72rem;color:#64748b;letter-spacing:.2em;margin-top:.25rem}

.site-header{background:#1a2744;border-bottom:2px solid #c9a227}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:.65rem 0;gap:1rem}
.logo{font-weight:800;font-size:1.05rem;color:#faf8f3;letter-spacing:.06em}
.logo b{color:#c9a227;font-weight:900}
.nav-main{display:flex;flex-wrap:wrap;gap:.35rem 1.1rem;font-size:.86rem}
.nav-main a{color:#94a3b8;font-weight:600}
.nav-main a.active,.nav-main a:hover{color:#c9a227;text-decoration:none}
.btn-nav{display:inline-block;background:#c9a227;color:#1a2744!important;padding:.42rem 1rem;font-weight:800;font-size:.82rem;text-decoration:none!important;border:1px solid #d4af37}
.btn-nav:hover{background:#d4af37}

.section{padding:3.25rem 0}
.section-title{font-size:clamp(1.25rem,3vw,1.6rem);font-weight:800;margin-bottom:.45rem;color:#1a2744;letter-spacing:.04em}
.section-lead{color:#64748b;font-size:.9rem;margin-bottom:1.75rem;max-width:620px}

.footer{background:#1a2744;color:#cbd5e1;padding:2.25rem 0 0;font-size:.86rem;border-top:3px solid #c9a227}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2rem;padding-bottom:1.75rem}
.footer h3{font-size:.88rem;color:#c9a227;margin-bottom:.65rem;font-weight:800;letter-spacing:.06em}
.footer a{color:#94a3b8}
.footer-links{display:flex;flex-wrap:wrap;gap:.4rem 1rem}
.footer-bottom{padding:.85rem 0;text-align:center;color:#64748b;font-size:.76rem;border-top:1px solid #334155}

@media(max-width:768px){
  .header-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
}