:root{--blue:#1e3c72;--blue2:#2a5298;--ink:#333;--muted:#666;--line:#e6ebf2;}
*{box-sizing:border-box;margin:0;padding:0;}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);line-height:1.7;background:#fff;}
a{color:inherit;text-decoration:none;}
.container{max-width:1140px;margin:0 auto;padding:0 1.2rem;}
/* 语言切换条 */
.langbar{position:fixed;top:0;left:0;right:0;z-index:999;background:rgba(30,60,114,.96);backdrop-filter:blur(4px);display:flex;justify-content:center;gap:.2rem;flex-wrap:wrap;padding:.35rem .6rem;font-size:.82rem;}
.langbar a{color:#cfe0ff;padding:.18rem .55rem;border-radius:20px;transition:.2s;}
.langbar a:hover{background:rgba(255,255,255,.15);color:#fff;}
.langbar a.active{background:#fff;color:var(--blue);font-weight:700;}
.hero{margin-top:38px;background:linear-gradient(135deg,#1e3c72,#2a5298);color:#fff;text-align:center;padding:4.5rem 1.2rem 3.5rem;}
.hero h1{font-size:2rem;margin-bottom:1rem;line-height:1.3;}
.hero .sub{font-size:1.2rem;opacity:.95;margin-bottom:.6rem;}
.hero .desc{font-size:1.02rem;opacity:.88;max-width:760px;margin:0 auto 1.8rem;}
.hero .cta{display:inline-block;background:#ffd54f;color:#1e3c72;font-weight:700;padding:.8rem 2.2rem;border-radius:30px;font-size:1.1rem;transition:.2s;}
.hero .cta:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.25);}
.section{padding:3.6rem 0;}
.section.alt{background:#f6f8fc;}
.section-title{text-align:center;font-size:1.7rem;color:var(--blue);margin-bottom:.5rem;position:relative;padding-bottom:.8rem;}
.section-title:after{content:"";display:block;width:60px;height:4px;background:#4fc3f7;border-radius:3px;margin:.7rem auto 0;}
.section .lead{max-width:860px;margin:0 auto 2.4rem;text-align:center;color:var(--muted);font-size:1.05rem;}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.4rem;}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:1.8rem;transition:.2s;}
.card:hover{transform:translateY(-4px);box-shadow:0 10px 28px rgba(30,60,114,.12);}
.card .ic{font-size:2.2rem;margin-bottom:.7rem;}
.card h3{color:var(--blue);font-size:1.18rem;margin-bottom:.6rem;}
.card p{color:var(--muted);font-size:.96rem;}
.products .card .tag{display:inline-block;background:#eef3fb;color:var(--blue2);font-size:.78rem;padding:.2rem .6rem;border-radius:6px;margin-top:.8rem;}
.brands{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;}
.brand-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:1.1rem 1.4rem;text-align:center;min-width:150px;transition:.2s;}
.brand-item:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(30,60,114,.12);}
.brand-item .bn{font-weight:700;color:var(--blue);font-size:1.1rem;}
.brand-item .bc{color:var(--muted);font-size:.84rem;margin-top:.2rem;}
/* 联系 */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:2rem;max-width:1000px;margin:0 auto;}
.form-group{margin-bottom:1rem;}
.form-group label{display:block;font-size:.9rem;color:var(--muted);margin-bottom:.3rem;}
.form-group input,.form-group textarea{width:100%;padding:.75rem .9rem;border:1px solid var(--line);border-radius:9px;font-size:1rem;font-family:inherit;}
.form-group textarea{min-height:110px;resize:vertical;}
.submit-btn{background:var(--blue);color:#fff;border:none;padding:.85rem 2rem;border-radius:30px;font-size:1.05rem;font-weight:700;cursor:pointer;transition:.2s;}
.submit-btn:hover{background:var(--blue2);}
.submit-btn:disabled{opacity:.6;cursor:default;}
.ccards{display:grid;grid-template-columns:1fr 1fr;gap:1rem;}
.ccard{background:#f6f8fc;border:1px solid var(--line);border-radius:12px;padding:1.1rem 1.2rem;}
.ccard .ic{font-size:1.5rem;}
.ccard h4{color:var(--blue);font-size:.95rem;margin:.3rem 0;}
.ccard p{color:var(--muted);font-size:.92rem;}
.ccard .hl{color:#1e3c72;font-weight:700;font-size:1.02rem;}
/* 页脚 */
footer{background:#16264a;color:#cdd9ee;padding:2.6rem 1.2rem 1.4rem;text-align:center;font-size:.9rem;}
footer .vc{margin:.6rem 0;}
footer .vc #visitorCount{color:#ffd54f;font-weight:700;}
footer .cr{border-top:1px solid rgba(255,255,255,.12);margin-top:1.4rem;padding-top:1rem;opacity:.8;}
@media(max-width:760px){.contact-wrap,.ccards{grid-template-columns:1fr;}.hero h1{font-size:1.5rem;}}