/* Base styles */
:root{
  --bg1:#0f172a; /* slate-900 */
  --bg2:#111827; /* gray-900 */
  --grad1:#1e3c72;
  --grad2:#2a5298;
  --card:#0b1220;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --accent:#60a5fa;
  --ring:rgba(96,165,250,.35);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans","Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background: radial-gradient(1200px 600px at 10% -10%, #1e293b 20%, transparent 60%),
              radial-gradient(1000px 500px at 110% 10%, #0b1220 10%, transparent 50%),
              linear-gradient(120deg, var(--bg1), var(--bg2));
  line-height:1.6;
}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
header{
  position:sticky;top:0;z-index:20;
  backdrop-filter: saturate(180%) blur(10px);
  background:rgba(10,15,25,.6);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;gap:12px;align-items:center}
.brand img{width:36px;height:36px}
.brand span{font-weight:700;letter-spacing:.3px}
.menu{display:flex;gap:20px}
.menu a{color:var(--text);opacity:.9}
.cta{display:inline-block;padding:10px 16px;border-radius:999px;background:linear-gradient(135deg,var(--grad1),var(--grad2));color:#fff;border:1px solid rgba(255,255,255,.12);box-shadow:0 10px 25px rgba(42,82,152,.35)}
.cta:hover{transform:translateY(-1px)}
/* Hero */
.hero{padding:96px 0 56px;background:radial-gradient(1200px 500px at 50% -30%, rgba(42,82,152,.35), transparent 60%)}
.hero h1{font-size:44px;margin:0 0 14px;letter-spacing:.2px}
.hero p{font-size:18px;color:var(--muted);max-width:720px}
.hero .badges{display:flex;gap:16px;flex-wrap:wrap;margin-top:22px}
.badge{padding:8px 12px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);border-radius:10px;color:var(--text);font-size:14px}
/* Cards */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0 14px}
.card{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);border-radius:16px;padding:20px}
.card h3{margin:0 0 8px}
.card p{color:var(--muted);margin:0}
.card:hover{box-shadow:0 12px 32px rgba(0,0,0,.35);transform:translateY(-2px);transition:all .2s ease}
/* Section */
.section{padding:28px 0}
.section h2{font-size:28px;margin:20px 0 8px}
.list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.item{background:rgba(255,255,255,.02);border:1px solid rgba(255,255,255,.06);border-radius:14px;padding:14px}
small.muted{color:var(--muted)}
/* Footer */
footer{margin-top:56px;padding:28px 0;border-top:1px solid rgba(255,255,255,.06);background:rgba(8,12,20,.6)}
.footergrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:20px}
.footergrid h4{margin:0 0 10px}
.footergrid a{display:block;margin:6px 0;color:var(--text);opacity:.9}
.legal{border-top:1px dashed rgba(255,255,255,.12);margin-top:18px;padding-top:12px;color:var(--muted);font-size:14px}
/* Responsive */
@media (max-width: 900px){
  .grid{grid-template-columns:1fr}
  .list{grid-template-columns:1fr}
  .footergrid{grid-template-columns:1fr}
  .hero h1{font-size:34px}
}
/* Forms */
input,textarea{
  width:100%;padding:12px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.02);color:var(--text);outline:none
}
input:focus,textarea:focus{box-shadow:0 0 0 4px var(--ring);border-color:rgba(96,165,250,.6)}
button{padding:12px 16px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:linear-gradient(135deg,var(--grad1),var(--grad2));color:#fff;cursor:pointer}
button:hover{transform:translateY(-1px)}