:root{--y:#FFD60A;--yl:#FFF4B8;--n:#0B2A6B;--ink:#1a1f2e;--bg:#FFFDF2;--mut:#5b6275}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans TC",sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--n)}
a:focus-visible,summary:focus-visible{outline:3px solid var(--n);outline-offset:3px}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
header{background:var(--y);color:var(--n)}
header .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px}
header strong{font-size:1.25rem;font-weight:800}
nav a{margin-left:18px;font-weight:600;text-decoration:none}
nav a:hover{text-decoration:underline}
.hero{background:var(--y);color:var(--n);padding:40px 0 64px}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center}
h1{font-size:clamp(2.2rem,6vw,3.6rem);line-height:1.08;margin:0 0 16px;font-weight:900;letter-spacing:-.02em}
.hero p{font-size:1.15rem;max-width:34ch}
.hero img{width:100%;max-width:360px;justify-self:center;border-radius:20px;box-shadow:0 18px 40px rgba(11,42,107,.28)}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.btn{display:inline-block;background:var(--n);color:#fff;padding:13px 22px;border-radius:12px;font-weight:700;text-decoration:none}
.btn:hover{background:#071c4a}
section{padding:52px 0}
h2{font-size:1.7rem;margin:0 0 20px;color:var(--n)}
.feat{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px 40px;list-style:none;padding:0;margin:0}
.feat strong{display:block;color:var(--n)}
.feat span{color:var(--mut)}
.alt{background:var(--yl)}
details{border-bottom:1px solid #e3dcae;padding:14px 0}
summary{cursor:pointer;font-weight:700;color:var(--n)}
details p{margin:10px 0 0;color:var(--mut)}
.contact{font-size:1.1rem}
footer{background:var(--n);color:#dfe6ff;padding:28px 0;font-size:.92rem}
footer a{color:#fff}
@media(max-width:720px){.hero .wrap{grid-template-columns:1fr}.hero p{max-width:none}}