/* ===== 公共样式 ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans SC','Inter',-apple-system,sans-serif;font-size:16px;line-height:1.8;color:#1A1A2E;background:#FFFFFF}
a{color:#00B88A;text-decoration:none;transition:color .2s}
a:hover{color:#009973}
img{max-width:100%;height:auto}
:root{--primary:#00B88A;--primary-dark:#009973;--secondary:#4A9FE8;--accent-orange:#FF8C42;--accent-purple:#8B7FEA;--bg-light:#F7FBF9;--bg-dark:#1A1A2E;--text-primary:#1A1A2E;--text-secondary:#4A4A5A;--text-muted:#8C8C9A}

/* Header */
.site-header{position:sticky;top:0;z-index:1000;background:#FFFFFF;border-bottom:1px solid #E8F0ED;box-shadow:0 2px 10px rgba(0,0,0,0.05);height:65px}
.header-inner{max-width:1200px;margin:0 auto;padding:0 20px;height:100%;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--text-primary)}
.logo img{height:40px}
.main-nav{display:flex;gap:32px;list-style:none}
.main-nav a{color:var(--text-secondary);font-weight:500;font-size:15px;padding:8px 0;position:relative}
.main-nav a:hover,.main-nav a.active{color:var(--primary)}
.main-nav a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--primary);transition:width .2s}
.main-nav a:hover::after{width:100%}
.header-search{display:flex;align-items:center;background:var(--bg-light);border-radius:20px;padding:8px 16px;gap:8px}
.header-search input{border:none;background:transparent;outline:none;font-size:14px;width:180px;color:var(--text-primary)}
.header-search input::placeholder{color:var(--text-muted)}
.header-search svg{width:18px;height:18px;color:var(--text-muted)}

/* Footer */
.site-footer{background:var(--bg-dark);color:#8C8C9A;padding:60px 20px 30px;margin-top:80px}
.footer-inner{max-width:1200px;margin:0 auto}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:48px;margin-bottom:40px}
.footer-brand p{font-size:14px;line-height:1.7;margin-top:12px;color:#8C8C9A}
.footer-title{color:#FFFFFF;font-size:15px;font-weight:600;margin-bottom:20px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#8C8C9A;font-size:14px;transition:color .2s}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:30px;text-align:center;font-size:14px}
.footer-bottom a{color:#8C8C9A}
.footer-bottom a:hover{color:var(--primary)}

/* Responsive */
@media(max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:768px){.main-nav{display:none}.header-search{display:none}.footer-grid{grid-template-columns:1fr;gap:24px}}
@media(max-width:480px){.site-header{height:56px}}