:root{
  --bg: #0b1020;
  --panel: rgba(255,255,255,0.06);
  --panel2: rgba(255,255,255,0.08);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.72);
  --faint: rgba(255,255,255,0.52);
  --accent: #7c5cff;
  --accent2: #2dd4bf;
  --border: rgba(255,255,255,0.12);
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --radius: 16px;
  --radius2: 22px;
  --maxw: 980px;
}

*{ box-sizing:border-box; }
html, body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background:
    radial-gradient(900px 500px at 10% 10%, rgba(124,92,255,0.22), transparent 60%),
    radial-gradient(900px 500px at 90% 25%, rgba(45,212,191,0.18), transparent 60%),
    radial-gradient(900px 600px at 35% 95%, rgba(124,92,255,0.14), transparent 60%),
    linear-gradient(180deg, #070a14 0%, #0b1020 60%, #0b1020 100%);
}

a{ color: #9aa7ff; text-decoration:none; }
a:hover{ text-decoration:underline; }

.container{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 22px 18px 70px;
}

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding: 14px 16px;
  margin-top: 10px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,0.07), rgba(255,255,255,0.05));
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  position: sticky;
  top: 10px;
  backdrop-filter: blur(10px);
  z-index: 10;
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width: 220px;
}

.logo{
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: radial-gradient(circle at 30% 30%, rgba(124,92,255,0.9), rgba(45,212,191,0.55));
  border: 1px solid rgba(255,255,255,0.16);
  box-shadow: 0 8px 18px rgba(0,0,0,0.25);
}

.brand h1{
  font-size: 14px;
  line-height: 1.15;
  margin:0;
  font-weight: 700;
  letter-spacing: 0.2px;
}
.brand .sub{
  display:block;
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
  margin-top: 2px;
}

.nav{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:center;
}
.nav a{
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--text);
  font-size: 13px;
  background: transparent;
}
.nav a:hover{
  border-color: var(--border);
  background: rgba(255,255,255,0.05);
}
.nav a.active{
  border-color: rgba(124,92,255,0.35);
  background: rgba(124,92,255,0.12);
}

.lang{
  display:flex;
  align-items:center;
  gap:8px;
  min-width: 160px;
  justify-content:flex-end;
}
.lang .hint{
  font-size: 12px;
  color: var(--faint);
}
.lang button{
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.05);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 12px;
}
.lang button.active{
  border-color: rgba(45,212,191,0.45);
  background: rgba(45,212,191,0.14);
}

.hero{
  padding: 26px 6px 12px;
}
.hero h2{
  font-size: 40px;
  margin: 18px 0 10px;
  letter-spacing: -0.6px;
}
.hero p{
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
  max-width: 80ch;
}

.grid{
  display:grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 16px;
}
@media(min-width: 900px){
  .grid{ grid-template-columns: 1.15fr 0.85fr; }
}

.card{
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius2);
  padding: 18px 16px;
  box-shadow: var(--shadow);
}
.card h3{
  margin: 0 0 10px;
  font-size: 16px;
  letter-spacing: -0.2px;
}
.card p, .card li{
  color: var(--muted);
  line-height: 1.7;
  font-size: 14px;
}
.card ul{
  margin: 8px 0 0;
  padding-left: 18px;
}
.kv{
  display:grid;
  grid-template-columns: 160px 1fr;
  gap: 8px 14px;
  margin-top: 10px;
  font-size: 13px;
}
.kv div:nth-child(odd){
  color: var(--faint);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  font-size: 12px;
  color: var(--muted);
}
.badge i{
  display:inline-block;
  width: 10px;
  height: 10px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
}

.footer{
  margin-top: 24px;
  color: var(--faint);
  font-size: 12px;
  line-height: 1.6;
}

hr.sep{
  border: none;
  border-top: 1px solid var(--border);
  margin: 14px 0;
}

.small{
  font-size: 12px;
  color: var(--faint);
}
code.inline{
  padding: 2px 6px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.25);
  color: rgba(255,255,255,0.86);
}