*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;background:#0f172a;color:#e2e8f0;line-height:1.7}
.wrap{max-width:1000px;margin:0 auto;padding:0 20px}
header{background:#1e293b;border-bottom:1px solid #334155;position:sticky;top:0;z-index:50}
header .wrap{display:flex;justify-content:space-between;align-items:center;height:60px}
.logo img{display:block}
nav a{color:#94a3b8;margin-left:16px;text-decoration:none;font-size:.9rem}
nav a:hover{color:#38bdf8}
.hero{position:relative;text-align:center}
.hero-bg{width:100%;max-height:320px;object-fit:cover;display:block}
.hero-inner{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;background:rgba(15,23,42,.6);padding:20px}
.hero-inner h1{font-size:clamp(1.4rem,3.5vw,2rem);color:#f0f9ff;margin-bottom:10px}
.hero-inner p{color:#bae6fd;margin-bottom:18px;max-width:520px}
.btn{display:inline-block;padding:12px 28px;background:#0ea5e9;color:#0f172a;border-radius:8px;text-decoration:none;font-weight:600}
.section{padding:52px 0}
.section.dark{background:#1e293b}
h2{font-size:1.5rem;color:#38bdf8;text-align:center;margin-bottom:10px}
.sub{text-align:center;color:#94a3b8;margin-bottom:28px;font-size:.95rem}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.card{background:#1e293b;border:1px solid #334155;border-radius:12px;padding:20px;text-align:center}
.card img{width:48px;margin-bottom:12px}
.card h3{color:#7dd3fc;margin-bottom:8px;font-size:1.05rem}
.card p{color:#94a3b8;font-size:.9rem}
.feat-list{max-width:800px;margin:0 auto}
.feat-item{background:#0f172a;border:1px solid #334155;border-radius:10px;padding:18px 20px;margin-bottom:12px}
.feat-item h3{color:#38bdf8;margin-bottom:6px}
.feat-item p{color:#94a3b8;font-size:.92rem}
.dl-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;max-width:700px;margin:0 auto}
.dl-card{background:#1e293b;border:1px solid #334155;border-radius:12px;padding:18px;text-align:center;text-decoration:none;color:#e2e8f0}
.dl-card:hover{border-color:#0ea5e9}
.dl-card strong{display:block;margin-bottom:4px}
.dl-card span{color:#64748b;font-size:.85rem}
.faq>div{background:#0f172a;border:1px solid #334155;border-radius:10px;padding:14px 18px;margin-bottom:10px}
.faq h3{color:#38bdf8;font-size:1rem;margin-bottom:4px}
.faq p{color:#94a3b8;font-size:.9rem}
.link-grid{display:flex;flex-wrap:wrap;gap:10px 14px;justify-content:center}
.link-grid a{color:#7dd3fc;text-decoration:none;font-size:.9rem;padding:6px 10px;background:#1e293b;border-radius:6px;border:1px solid #334155}
.link-grid a:hover{border-color:#0ea5e9;color:#bae6fd}
footer{background:#020617;padding:28px 0;text-align:center;border-top:1px solid #1e293b}
footer p{color:#64748b;font-size:.85rem;margin-bottom:6px}
.seo{font-size:.78rem;color:#475569}
@media(max-width:700px){nav{display:none}}