/* ========== 全局公共样式（所有页面共用） ========== */
*{margin:0;padding:0;box-sizing:border-box;font-family:system-ui,-apple-system,"Microsoft Yahei",sans-serif}
body{background:#f8fafc;color:#1e293b}
.container{max-width:1200px;margin:0 auto;padding:0 1rem}

header{background:#fff;box-shadow:0 1px 3px rgba(0,0,0,0.1);border-bottom:1px solid #e2e8f0;position:sticky;top:0;z-index:100}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:64px;flex-wrap:wrap;gap:10px;padding:10px 0}
.logo{display:flex;align-items:center;gap:8px;font-weight:bold;font-size:18px;color:#1e293b;text-decoration:none}
.logo-icon{width:32px;height:32px;background:#2563eb;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px}
.nav-links{display:flex;gap:24px;flex-wrap:wrap}
.nav-links a{color:#64748b;text-decoration:none;font-size:15px;transition:color .2s;white-space:nowrap}
.nav-links a:hover{color:#2563eb}
.nav-links a.active{color:#2563eb;font-weight:500}

footer{background:#fff;border-top:1px solid #e2e8f0;padding:24px 0;text-align:center;color:#64748b;font-size:14px;margin-top:40px}
footer a{color:#64748b;text-decoration:none}
footer a:hover{color:#2563eb}

@media(max-width:768px){
    .nav{height:auto}
    .nav-links{gap:10px;font-size:13px}
}