:root{
  --blue:#2f5c8a; --blue2:#1d3f66; --accent:#e08a3c; --bg:#f6f8fb; --ink:#1f2a38; --muted:#5a6b7d;
  --card:#ffffff; --line:#e4e9f0; --ok:#3fb950;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:'Microsoft JhengHei','PingFang HK','Noto Sans TC',system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}

.topbar{background:var(--blue2);color:#fff;font-size:13px;padding:6px 0}
.topbar .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;flex-wrap:wrap;gap:10px}
.brand{display:flex;align-items:center;gap:12px}
.brand .logo{width:42px;height:42px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px}
.brand b{font-size:17px;color:var(--blue2)}
.brand small{display:block;color:var(--muted);font-size:11px;font-weight:400}
nav{display:flex;flex-wrap:wrap;gap:4px;align-items:center}
nav a{padding:8px 12px;border-radius:8px;color:var(--ink);font-size:14px}
nav a:hover{background:#eef2f8;text-decoration:none}
nav a.active{background:var(--blue);color:#fff}
.lang{margin-left:6px}
.lang button{border:1px solid var(--line);background:#fff;padding:6px 10px;border-radius:8px;cursor:pointer;font-size:13px}
.lang button.active{background:var(--blue);color:#fff;border-color:var(--blue)}

.hero{background:linear-gradient(135deg,#16324f,#2f5c8a);color:#fff;padding:64px 20px}
.hero h1{font-size:34px;margin:0 0 14px;line-height:1.3}
.hero p{font-size:17px;opacity:.92;max-width:680px}
.hero .btn{display:inline-block;margin-top:22px;background:var(--accent);color:#fff;padding:12px 22px;border-radius:10px;font-weight:600}
.hero .btn:hover{background:#c9742c;text-decoration:none}
.hero .sub{display:flex;flex-wrap:wrap;gap:26px;margin-top:26px}
.hero .sub div{font-size:14px;opacity:.95}
.hero .sub b{display:block;font-size:20px}

section{padding:44px 0}
.section-title{font-size:24px;color:var(--blue2);margin:0 0 8px}
.section-sub{color:var(--muted);margin:0 0 24px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:0 2px 10px rgba(31,42,56,.04)}
.card h3{margin:10px 0 8px;color:var(--blue2);font-size:17px}
.card .ico{width:46px;height:46px;border-radius:12px;background:#eef4fb;color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:22px}
.card p{color:var(--muted);font-size:14px;margin:0}

.spec{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.spec div{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 16px}
.spec b{display:block;color:var(--blue2)}
.spec span{color:var(--muted);font-size:13px}

.callout{background:#fff8ef;border:1px solid #f0dfc8;border-radius:12px;padding:16px 20px;margin:18px 0}
.callout b{color:#a86a1f}

.two-col{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.info-box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}
.info-box h3{margin-top:0;color:var(--blue2)}

table{width:100%;border-collapse:collapse;background:#fff;border-radius:10px;overflow:hidden}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}
th{background:#eef2f8;color:var(--blue2)}

.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
label{display:block;font-size:13px;color:var(--muted);margin-bottom:5px}
input,select,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:8px;font-size:14px;font-family:inherit;background:#fff}
textarea{resize:vertical}
input[type=file]{padding:8px}
.btn-main{background:var(--blue);color:#fff;padding:13px 24px;border:0;border-radius:10px;font-size:15px;cursor:pointer}
.btn-main:hover{background:var(--blue2)}

footer.site{background:var(--blue2);color:#cfd9e6;padding:34px 0;font-size:13px}
footer.site .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
footer.site h4{color:#fff;margin:0 0 10px;font-size:15px}
footer.site a{color:#cfd9e6}
.copyright{margin-top:22px;border-top:1px solid rgba(255,255,255,.15);padding-top:14px;color:#9db0c7}

[data-en]{display:none}
body.en [data-zh]{display:none}
body.en [data-en]{display:block}
.langbox{display:inline-block}
@media(max-width:640px){.hero h1{font-size:26px}.hero{padding:40px 20px}}