:root{
  --bg:#0b1220;
  --card:#0f1a2f;
  --text:#e7eefc;
  --muted:#a9b8d6;
  --line:rgba(255,255,255,.08);
  --accent:#2563eb;
  --ok:#22c55e;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 18px;
  --wrap: 1100px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: radial-gradient(1200px 700px at 20% 0%, rgba(37,99,235,.25), transparent 55%),
              radial-gradient(900px 600px at 80% 10%, rgba(34,197,94,.15), transparent 55%),
              var(--bg);
  color:var(--text);
}

a{color:inherit; text-decoration:none}
a:hover{opacity:.92}

.wrap{max-width:var(--wrap); margin:0 auto; padding:0 18px}

.skip-link{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{left:18px; top:18px; width:auto; height:auto; background:var(--card); padding:10px 12px; border-radius:12px; outline:2px solid var(--accent); z-index:9999}

.site-header{
  position:sticky; top:0;
  backdrop-filter: blur(10px);
  background: rgba(11,18,32,.72);
  border-bottom:1px solid var(--line);
  z-index:10;
}

.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  min-height:72px;
  gap:14px;
}

.brand{display:flex; align-items:center; gap:12px}
.brand-mark{
  width:38px; height:38px;
  display:grid; place-items:center;
  border-radius:14px;
  background: linear-gradient(135deg, rgba(37,99,235,.9), rgba(34,197,94,.6));
  box-shadow: var(--shadow);
  font-weight:800;
}
.brand-text strong{display:block; font-size:15px; letter-spacing:.2px}
.brand-text small{display:block; color:var(--muted); font-size:12px; margin-top:2px}

.nav{display:flex; align-items:center; gap:10px}
.nav-link{
  padding:10px 12px;
  border-radius:12px;
  color:var(--muted);
  border:1px solid transparent;
}
.nav-link.is-active{
  color:var(--text);
  border-color: var(--line);
  background: rgba(255,255,255,.03);
}
.nav-cta{
  padding:10px 12px;
  border-radius:12px;
  background: rgba(37,99,235,.18);
  border:1px solid rgba(37,99,235,.35);
}

.nav-toggle{
  display:none;
  background: rgba(255,255,255,.03);
  border:1px solid var(--line);
  color:var(--text);
  padding:10px 12px;
  border-radius:12px;
  cursor:pointer;
}
.sr-only{position:absolute; left:-999px}

.site-main{padding:26px 0 52px}

.hero{
  padding:28px 0 12px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:16px;
  align-items:stretch;
}
.hero-card{
  background: rgba(15,26,47,.75);
  border:1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:20px;
}
.kicker{
  display:inline-flex; gap:8px; align-items:center;
  font-size:12px; color:var(--muted);
  padding:6px 10px; border-radius:999px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.02);
}
.kicker b{color:var(--text)}
.h1{font-size:34px; line-height:1.1; margin:12px 0 10px}
.lead{color:var(--muted); font-size:15px; line-height:1.6; margin:0 0 16px}

.actions{display:flex; gap:10px; flex-wrap:wrap}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:11px 14px;
  border-radius:14px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
  color:var(--text);
}
.btn.primary{
  background: rgba(37,99,235,.22);
  border-color: rgba(37,99,235,.45);
}
.btn.ok{
  background: rgba(34,197,94,.15);
  border-color: rgba(34,197,94,.35);
}

.panel{
  background: rgba(15,26,47,.55);
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:18px;
}

.grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:12px;
  margin-top:14px;
}
.card{
  background: rgba(15,26,47,.60);
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:16px;
  box-shadow: 0 10px 22px rgba(0,0,0,.25);
}
.card h3{margin:0 0 6px; font-size:15px}
.card p{margin:0; color:var(--muted); font-size:13px; line-height:1.5}

.section-title{
  display:flex; align-items:baseline; justify-content:space-between;
  gap:10px;
  margin-top:24px;
}
.section-title h2{margin:0; font-size:18px}
.section-title span{color:var(--muted); font-size:13px}

.kb-toolbar{
  display:flex; gap:10px; flex-wrap:wrap; align-items:center;
  margin:12px 0 14px;
}
.input, .select{
  background: rgba(255,255,255,.03);
  border:1px solid var(--line);
  color:var(--text);
  padding:10px 12px;
  border-radius:14px;
}
.input{min-width:260px}
.badges{display:flex; gap:8px; flex-wrap:wrap}
.badge{
  font-size:12px; color:var(--muted);
  border:1px solid var(--line);
  background: rgba(255,255,255,.02);
  padding:6px 10px;
  border-radius:999px;
}

.article-meta{
  display:flex; gap:10px; flex-wrap:wrap;
  color:var(--muted); font-size:13px;
  margin:8px 0 14px;
}
.article{
  background: rgba(15,26,47,.60);
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:18px;
}
.article h1{margin:0 0 8px; font-size:26px}
.article h2{margin-top:18px}
.article p, .article li{color:var(--text); line-height:1.75}
.article a{color: #cfe0ff; text-decoration:underline}

.site-footer{
  border-top:1px solid var(--line);
  padding:26px 0 34px;
  background: rgba(11,18,32,.55);
}
.footer-inner{display:grid; grid-template-columns: 1.1fr .9fr; gap:14px; align-items:start}
.footer-brand p{color:var(--muted); margin:8px 0 0}
.footer-links{display:flex; flex-wrap:wrap; gap:10px; justify-content:flex-end}
.footer-links a{color:var(--muted)}
.footer-note{grid-column:1 / -1; color:var(--muted); font-size:13px; border-top:1px solid var(--line); padding-top:14px}

@media (max-width: 900px){
  .hero-grid{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr}
  .nav-toggle{display:inline-flex}
  .nav{
    display:none;
    position:absolute;
    right:18px;
    top:72px;
    flex-direction:column;
    width:min(420px, calc(100vw - 36px));
    background: rgba(15,26,47,.92);
    border:1px solid var(--line);
    border-radius: 18px;
    padding:12px;
    box-shadow: var(--shadow);
  }
  .nav.is-open{display:flex}
  .footer-inner{grid-template-columns:1fr}
  .footer-links{justify-content:flex-start}
}