:root{
  --bg:#0a0b0f;
  --surface:#0d1117;
  --text:#eceff4;
  --muted:#bfc7d5;
  --accent:#2A6AF0;
  --accent-2:#CFAF5B;
  --card:#12141a;
  --border:#1a2233;
  --success:#2ecc71;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,#0a0b0f 0%,#0d1117 30%,#0d1117 100%);
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
}

.container{max-width:1120px;margin:0 auto;padding:0 20px}
.section{padding:64px 0}
.section-alt{background:rgba(255,255,255,0.02)}
.section-accent{background:linear-gradient(135deg,rgba(42,106,240,0.12),rgba(207,175,91,0.10))}
.section-head{margin-bottom:28px}
.section-head h2{font-size:28px;letter-spacing:.4px;margin:0 0 8px}
.section-head p{color:var(--muted);margin:0}
.section-head.center{text-align:center}

.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:stretch}
.contact-item{background:linear-gradient(180deg,rgba(255,255,255,0.03),rgba(255,255,255,0.02));border:1px solid rgba(255,255,255,0.06);border-radius:16px;padding:22px;box-shadow:0 8px 24px rgba(0,0,0,0.24);height:100%;display:flex;flex-direction:column}
.contact-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.contact-title .title{font-size:16px;letter-spacing:.4px;color:var(--muted)}
.contact-body{display:flex;flex-direction:column;gap:6px}
.contact-email{color:var(--text);text-decoration:none;font-weight:600}
.contact-email:hover{color:var(--accent)}
.qr-figure{border:1px solid var(--border);border-radius:12px;padding:16px;text-align:center}
.qr-figure img{max-width:160px;width:100%;height:auto;border-radius:8px;display:block;margin:0 auto}
.qr-caption{color:var(--muted);margin-top:8px}

.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(15,17,23,0.9);backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--border);
  min-height:64px;
}
.header-inner{display:flex;align-items:center;gap:16px;padding:16px 20px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text)}
.brand-mark{width:24px;height:24px;border-radius:4px;background:linear-gradient(135deg,var(--accent),var(--accent-2))}
.brand-name{font-weight:700;letter-spacing:.6px;font-size:18px}
.header-cta{margin-left:12px}

.nav{display:flex;gap:18px;margin-left:auto}
.nav a{color:var(--muted);text-decoration:none;padding:10px 8px;border-radius:6px;font-size:16px}
.nav a .icon{width:16px;height:16px;margin-right:6px;vertical-align:-2px}
.nav a:hover{color:var(--text);background:rgba(255,255,255,0.04)}

.header-cta{display:flex;gap:10px}
.btn{display:inline-block;padding:10px 16px;border-radius:10px;font-weight:600;text-decoration:none;border:1px solid transparent;cursor:pointer}
.btn-primary{background:var(--accent);color:white;border-color:transparent;box-shadow:0 8px 20px rgba(42,106,240,0.28)}
.btn-outline{color:var(--text);border-color:var(--border);background:transparent}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}

.nav-toggle{display:none;background:transparent;border:1px solid var(--border);color:var(--text);padding:8px 12px;border-radius:8px}

.hero{
  padding:72px 0 60px;
  background:
    radial-gradient(800px 300px at 20% 0%, rgba(42,106,240,0.18), transparent 60%),
    radial-gradient(800px 300px at 80% 0%, rgba(207,175,91,0.12), transparent 60%);
  border-bottom:1px solid var(--border);
}
.hero-inner{max-width:900px}
.hero h1{font-size:40px;line-height:1.15;margin:0 0 14px}
.lead{color:var(--muted);font-size:18px;margin:0 0 22px}
.hero-actions{display:flex;gap:12px}
.modules-block{margin-top:22px}
.modules-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:10px}
.module-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px;text-decoration:none;color:var(--text)}
.module-card h3{margin:0 0 6px;font-size:16px}
.module-card h3 .module-icon{width:18px;height:18px;margin-right:6px;vertical-align:-2px}
.module-card p{margin:0;color:var(--muted);font-size:14px}
.module-card:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,0.35);border-color:rgba(11,93,208,0.5)}

.grid{display:grid;gap:18px}
.cards{grid-template-columns:repeat(3,1fr)}
.columns{grid-template-columns:repeat(2,1fr)}
.news{grid-template-columns:repeat(3,1fr)}

.post-list{display:grid;gap:18px;grid-template-columns:repeat(3,1fr)}
.post-card{background:var(--card);border:1px solid var(--border);border-radius:14px;overflow:hidden}
.post-card a{display:block;color:var(--text);text-decoration:none}
.post-card .thumb{height:140px;background:linear-gradient(135deg,rgba(42,106,240,0.18),rgba(207,175,91,0.12))}
.post-card .post-meta{display:flex;justify-content:space-between;align-items:center;padding:12px 16px}
.post-card h3{margin:0 16px 8px;font-size:18px}
.post-card p{margin:0 16px 16px;color:var(--muted)}
.filters{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.filter{padding:8px 12px;border-radius:999px;border:1px solid var(--border);background:rgba(255,255,255,0.03);color:var(--muted);cursor:pointer}
.filter.active,.filter:hover{color:var(--text);border-color:var(--accent)}

.card{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  padding:18px;text-decoration:none;color:var(--text);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card h3{margin:0 0 8px;font-size:18px}
.card p{margin:0;color:var(--muted)}
.card:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,0.35);border-color:rgba(11,93,208,0.5)}

.news-item{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  padding:18px
}
.news-item h3{margin:6px 0 8px;font-size:18px}
.news-item p{margin:0;color:var(--muted)}
.tag{display:inline-block;padding:6px 10px;border-radius:999px;background:rgba(42,106,240,0.14);color:#dbe7ff;font-weight:600;font-size:12px;border:1px solid rgba(42,106,240,0.36)}

.bullet{margin:0;padding-left:18px;color:var(--muted)}
.bullet li{margin:6px 0}

.subscribe-form{display:flex;gap:12px;justify-content:center;align-items:center;margin-top:10px}
.subscribe-form input{
  width:360px;max-width:80vw;padding:12px 14px;border-radius:12px;
  border:1px solid var(--border);background:#0f121a;color:var(--text)
}
.subscribe-form input::placeholder{color:#7f8da8}
.subscribe-form button{padding:12px 18px;border-radius:12px}

.site-footer{
  border-top:1px solid var(--border);padding:26px 0;background:rgba(255,255,255,0.02)
}
.footer-inner{display:flex;align-items:center;justify-content:center;gap:14px}
.footer-links{display:flex;gap:14px}
.footer-links a{color:var(--muted);text-decoration:none}
.footer-links a:hover{color:var(--text)}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-copy small{color:var(--muted)}

@media (max-width:960px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .news{grid-template-columns:repeat(2,1fr)}
  .modules-cards{grid-template-columns:repeat(2,1fr)}
  .post-list{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .site-header{min-height:88px}
  .header-inner{padding:22px 18px;justify-content:space-between}
  .brand{margin-left:0;padding-left:6px}
  .brand-mark{width:26px;height:26px}
  .brand-name{font-size:19px}
  .header-cta{margin-left:auto}
  .nav-toggle{margin-left:auto;margin-right:14px;display:inline-flex;flex-direction:column;gap:8px;align-items:center;justify-content:center;width:52px;height:42px;border:1px solid var(--border);border-radius:12px;background:rgba(255,255,255,0.06)}
  .nav-toggle .bar{display:block;width:26px;height:3.2px;background:var(--text);border-radius:2px}
  .container{padding:0 24px}
  .hero{padding:84px 0 24px}
  .nav{display:none}
  .nav.open{
    display:flex;flex-direction:column;position:absolute;top:100px;left:18px;right:18px;
    background:linear-gradient(180deg,rgba(13,17,23,0.96),rgba(13,17,23,0.92));
    padding:12px;border:1px solid var(--border);border-radius:12px;
    box-shadow:0 12px 32px rgba(0,0,0,0.35)
  }
  .nav.open a{padding:12px 10px;border-radius:10px}
  .nav.open a:hover{background:rgba(255,255,255,0.05);color:var(--text)}
  .nav-toggle{display:inline-flex}
  .site-header .header-inner{position:relative;padding: 20px;}
  .cards{grid-template-columns:1fr}
  .columns{grid-template-columns:1fr}
  .news{grid-template-columns:1fr}
  .post-list{grid-template-columns:1fr}
  .hero h1{font-size:32px}
  .contact-grid{grid-template-columns:1fr;gap:16px}
  .modules-cards{grid-template-columns:1fr}
}