:root{--bg:#0b0b0e;--bg-alt:#121218;--text:#eef0f4;--muted:#aab2c0;--primary:#5b8cff;--primary-2:#3c6af0;--card:#161923;--border:#252a36}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text)}
.container{max-width:1120px;margin:0 auto;padding:0 20px}
a{color:var(--text);text-decoration:none}

.site-header{position:sticky;top:0;z-index:50;background:rgba(11,11,14,.8);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:700;letter-spacing:.4px}
.nav-toggle{display:none;background:transparent;border:0;color:var(--text);font-size:22px}
.site-nav{display:flex;gap:20px;align-items:center}
.site-nav a{color:var(--muted)}
.site-nav .cta{padding:8px 14px;border:1px solid var(--border);border-radius:8px;color:var(--text)}

.hero{position:relative;display:flex;align-items:center;min-height:62vh;background:radial-gradient(1000px 500px at 10% 10%,rgba(91,140,255,.25),transparent),radial-gradient(800px 400px at 90% 20%,rgba(60,106,240,.25),transparent),linear-gradient(180deg,rgba(20,24,34,.6),rgba(20,24,34,.9));border-bottom:1px solid var(--border)}
.hero-content{padding:80px 0}
.hero h1{margin:0 0 14px;font-size:42px;line-height:1.1}
.hero p{margin:0 0 24px;color:var(--muted);font-size:18px}
.hero-actions{display:flex;gap:14px}
.btn{display:inline-block;padding:12px 18px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--text)}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn.primary:hover{background:var(--primary-2)}

.section{padding:64px 0}
.section.alt{background:var(--bg-alt)}
.section h2{margin:0 0 26px;font-size:28px}

.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.service-card{position:relative;display:flex;flex-direction:column;border:1px solid var(--border);border-radius:14px;overflow:hidden;background:#0f1218}
.service-card img{width:100%;height:200px;object-fit:cover;display:block}
.service-info{padding:14px}
.service-info h3{margin:0 0 8px;font-size:18px}
.service-info p{margin:0;color:var(--muted)}

.portfolio-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.work{position:relative;overflow:hidden;border-radius:12px;border:1px solid var(--border);background:#0f1218}
.work img{width:100%;height:240px;object-fit:cover;display:block;filter:saturate(1.05) contrast(1.02)}
.work span{position:absolute;left:10px;bottom:10px;background:rgba(0,0,0,.4);padding:6px 10px;border-radius:8px;font-size:14px}

.about{display:grid;grid-template-columns:1fr;gap:22px;align-items:start}
.ticks{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:8px}
.ticks li{display:flex;align-items:center;gap:10px}
.map-thumb img{width:100%;height:220px;object-fit:cover;border-radius:12px;border:1px solid var(--border)}
.about-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px}
.loc{display:flex;align-items:center;justify-content:space-between;margin-top:10px}
.loc a{color:var(--primary)}

.contact{display:grid;grid-template-columns:1fr;gap:22px}
.contact-list{display:grid;gap:8px;margin:10px 0 18px}
.contact-form{display:grid;gap:10px}
.contact-form input,.contact-form textarea{background:#0e1117;border:1px solid var(--border);border-radius:10px;color:var(--text);padding:12px}
.contact-form button{justify-self:start}
.wechat{display:flex;flex-direction:column;gap:10px;align-items:center;justify-content:center;background:var(--card);border:1px solid var(--border);border-radius:14px}
.wechat img{width:180px;height:180px}

.site-footer{border-top:1px solid var(--border);background:rgba(11,11,14,.8)}
.footer-inner{height:64px;display:flex;align-items:center;justify-content:space-between}
.footer-links{display:flex;gap:16px}
.footer-links a{color:var(--muted)}

@media (max-width:960px){
.services-grid{grid-template-columns:repeat(2,1fr)}
.portfolio-grid{grid-template-columns:repeat(2,1fr)}
.about{grid-template-columns:1fr}
.contact{grid-template-columns:1fr}
}
@media (max-width:680px){
.hero h1{font-size:32px}
.site-nav{display:none;position:fixed;right:12px;top:64px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:12px;flex-direction:column;gap:10px}
.nav-toggle{display:inline-block}
}