:root{
  --purple: #4a00e0;
  --blue: #0072ff;
  --bg: linear-gradient(135deg,var(--blue),var(--purple));
  --card-bg: rgba(255,255,255,0.96);
  --muted:#f6f7fb;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:Inter,Arial,Helvetica,sans-serif;margin:0;color:#1a1a1a;background:var(--muted)}
.site-header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;background:transparent}
.site-header .logo img{height:48px}
.nav a{margin-left:14px;text-decoration:none;color:#333;font-weight:600}
.hero{background:var(--bg);color:#fff;padding:48px 16px;border-radius:0 0 24px 24px;box-shadow:0 6px 30px rgba(74,0,224,0.15)}
.hero-inner{max-width:960px;margin:0 auto;text-align:center;padding:32px}
.hero h1{font-size:28px;margin-bottom:8px}
.hero .tag{opacity:0.95;margin-bottom:18px}
.hero-cta .btn{margin:6px}
.btn{background:linear-gradient(90deg,var(--blue),var(--purple));color:#fff;padding:10px 16px;border-radius:10px;border:none;cursor:pointer;text-decoration:none;display:inline-block;font-weight:700;box-shadow:0 6px 18px rgba(7,17,80,0.12)}
.btn-outline{background:transparent;border:2px solid rgba(255,255,255,0.2);}
.btn-ghost{background:rgba(255,255,255,0.12);}
.about{max-width:900px;margin:28px auto;padding:22px;text-align:center;background:var(--card-bg);border-radius:12px;box-shadow:0 6px 20px rgba(0,0,0,0.06)}
.site-footer{margin-top:28px;padding:18px;text-align:center;color:#666}
.center-wrap{max-width:520px;margin:36px auto;padding:12px}
.card{background:var(--card-bg);padding:18px;border-radius:12px;box-shadow:0 6px 22px rgba(16,24,40,0.06)}
input,select,textarea{width:100%;padding:12px;margin:8px 0;border-radius:8px;border:1px solid #e6e9ef}
.small-header{padding:10px 14px;background:transparent}
.link{color:var(--purple);text-decoration:none;font-weight:600}
@media(max-width:600px){.hero h1{font-size:20px}.nav{display:none}.site-header{padding:12px}}