:root {
            
--bg-color: #0a0a0f;
            --card-bg: #15151f;

            --text-main: #e0e0e0;
            --text-muted: #a0a0a
0;
            --accent: #ff00ff;
            --accent-alt: #00f
2ff;
            --container-width: 1200px;
        }
        * { box-sizing: border
-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC',
 'Microsoft YaHei', sans-serif; background: var(--bg-color); color: var(--text-main
); line-height: 1.6; }
        .container { max-width: var(--container-width); margin
: 0 auto; padding: 0 20px; }
        header { background: rgba(10
, 10, 15, 0.9); padding: 20px 0; position
: sticky; top: 0; z-index: 1000; border-bottom: 1px solid #
333; }
        nav { display: flex; align-items: center; justify-content: space
-between; }
        .nav-links { display: flex; gap: 0; }
        .nav-links
 a { color: #fff; text-decoration: none; padding: 10px 15px; font-size
: 14px; transition: color 0.3s; }
        .hero { padding: 100px
 0; text-align: center; }
        .hero h1 { font-size: 3rem; margin
-bottom: 20px; background: linear-gradient(to right, var(--accent), var(--accent-alt));
 -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .btn {
 display: inline-block; padding: 12px 30px; background: var(--accent); color: #
fff; text-decoration: none; border-radius: 5px; font-weight: bold; }
        section
 { padding: 80px 0; }
        h2 { text-align: center; margin-bottom: 5
0px; font-size: 2.5rem; }
        .grid { display: grid; grid-template-columns
: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
        
.card { background: var(--card-bg); padding: 30px; border-radius: 15
px; border: 1px solid #333; transition: transform 0.3s; }
        .
card:hover { transform: translateY(-10px); border-color: var(--accent); }
        .footer
 { padding: 40px 0; border-top: 1px solid #333; text-align: center;
 color: var(--text-muted); }
        .faq-item { margin-bottom: 15px; background: var
(--card-bg); border-radius: 8px; }
        .faq-q { padding: 20px; cursor
: pointer; font-weight: bold; }
        .faq-a { padding: 0 20px 
20px; color: var(--text-muted); display: none; }
        input, select, textarea { width: 1
00%; padding: 12px; margin-bottom: 15px; background: #222; border:
 1px solid #444; color: #fff; border-radius: 5px; }