:root{
  --bg:#0b1220;
  --card:#0f1930;
  --card2:#0d162a;
  --text:#eaf0ff;
  --muted:#a9b6d6;
  --line:rgba(255,255,255,.09);
  --accent:#6ee7ff;
  --accent2:#b4ff89;
  --shadow: 0 14px 40px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 20% 0%, rgba(110,231,255,.16), transparent 50%),
              radial-gradient(900px 500px at 80% 10%, rgba(180,255,137,.12), transparent 55%),
              var(--bg);
  color:var(--text);
  line-height:1.55;
}

a{color:inherit;text-decoration:none}
.wrap{max-width:1100px;margin:0 auto;padding:0 18px}
.main{padding:26px 18px 38px}

.muted{color:var(--muted)}
code{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace}

.topbar{
  position:sticky; top:0; z-index:50;
  background: rgba(11,18,32,.72);
  border-bottom:1px solid var(--line);
  backdrop-filter: blur(10px);
}
.topbar-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 18px;
}
.brand{display:flex; gap:10px; align-items:center}
.brand-dot{
  width:12px;height:12px;border-radius:999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 0 6px rgba(110,231,255,.08);
}
.brand-text{font-weight:800;letter-spacing:.2px}
.nav{display:flex; gap:14px; align-items:center}
.nav a{
  color:var(--muted);
  padding:8px 10px;
  border-radius:12px;
  transition:.15s ease;
}
.nav a:hover{color:var(--text); background: rgba(255,255,255,.06)}
.navbtn{
  display:none;
  background: rgba(255,255,255,.06);
  border:1px solid var(--line);
  color:var(--text);
  border-radius:14px;
  padding:8px 12px;
  cursor:pointer;
}
.nav-mobile{
  display:none;
  padding:10px 18px 14px;
}
.nav-mobile a{
  display:block;
  padding:10px 12px;
  border-radius:14px;
  color:var(--muted);
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
  margin-bottom:10px;
}
.nav-mobile a:hover{color:var(--text)}
@media(max-width:760px){
  .nav{display:none}
  .navbtn{display:inline-flex}
  .nav-mobile.open{display:block}
}

.hero{
  padding:26px 18px;
  border:1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  border-radius:24px;
  box-shadow: var(--shadow);
}
.hero-badge{
  display:inline-flex;
  padding:6px 10px;
  border-radius:999px;
  font-size:13px;
  color: var(--muted);
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
}
h1{margin:14px 0 10px;font-size:34px;line-height:1.12}
.h1{margin:8px 0 10px;font-size:34px;line-height:1.12}
.grad{background: linear-gradient(135deg, var(--accent), var(--accent2)); -webkit-background-clip:text; background-clip:text; color:transparent}
.lead{color:var(--muted);font-size:16px;max-width:70ch}
.hero-actions{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 14px;border-radius:16px;
  background: linear-gradient(135deg, rgba(110,231,255,.18), rgba(180,255,137,.16));
  border:1px solid rgba(255,255,255,.14);
  box-shadow: 0 12px 30px rgba(0,0,0,.22);
}
.btn:hover{transform: translateY(-1px)}
.btn-ghost{
  background: rgba(255,255,255,.03);
  border:1px solid var(--line);
  color: var(--muted);
}
.btn-ghost:hover{color:var(--text); background: rgba(255,255,255,.06)}

.grid{
  display:grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap:14px;
  margin-top:18px;
}
@media(max-width:980px){ .grid{grid-template-columns: repeat(2, minmax(0,1fr));} }
@media(max-width:520px){ .grid{grid-template-columns: 1fr;} }

.card{
  border:1px solid var(--line);
  border-radius:22px;
  background: rgba(255,255,255,.03);
  padding:16px;
  transition:.18s ease;
}
.card:hover{transform: translateY(-2px); background: rgba(255,255,255,.05)}
.card-top{display:flex; gap:12px; align-items:center}
.icon{font-size:22px}
.card-title{font-weight:800}
.card-meta{margin-top:6px;font-size:13px}
.card-desc{margin-top:10px;color:var(--muted)}

.note{
  margin-top:18px;
  border:1px dashed rgba(255,255,255,.18);
  border-radius:22px;
  padding:16px;
  background: rgba(0,0,0,.12);
}

.crumbs{margin:6px 0 16px;color:var(--muted);font-size:14px}
.crumbs a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.crumbs a:hover{color:var(--text)}

.list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.list-item{
  border:1px solid var(--line);
  border-radius:18px;
  padding:14px;
  background: rgba(255,255,255,.03);
}
.list-item:hover{background: rgba(255,255,255,.05)}
.li-title{font-weight:800}
.li-meta{font-size:13px;margin-top:4px}
.li-desc{margin-top:8px;color:var(--muted)}
.empty{padding:14px;border:1px dashed rgba(255,255,255,.16);border-radius:18px;color:var(--muted)}

.article{
  border:1px solid var(--line);
  border-radius:24px;
  background: rgba(255,255,255,.03);
  overflow:hidden;
}
.article-head{
  padding:18px 18px 10px;
  border-bottom:1px solid var(--line);
  background: rgba(0,0,0,.12);
}
.pill{
  display:inline-flex;
  padding:4px 10px;
  border-radius:999px;
  font-size:12px;
  border:1px solid var(--line);
  color:var(--muted);
  background: rgba(255,255,255,.03);
}
.article h1{margin:10px 0 8px}
.meta{font-size:13px;margin-top:10px}
.dot{margin:0 8px}

.sec{padding:16px 18px}
.sec + .sec{border-top:1px solid var(--line)}
.sec h2{margin:0 0 8px;font-size:20px}
.sec p{margin:0;color:var(--muted)}
.code{
  margin-top:12px;
  border-radius:16px;
  padding:14px;
  background: rgba(0,0,0,.28);
  border:1px solid rgba(255,255,255,.10);
  overflow:auto;
}
.code code{color:var(--text); font-size:13px}

.links{margin:0; padding-left:18px}
.links a{color: var(--accent); text-decoration: underline; text-underline-offset: 3px}
.links a:hover{color: var(--accent2)}

.nextprev{margin-top:14px}

.footer{
  border-top:1px solid var(--line);
  background: rgba(0,0,0,.10);
  padding:18px 0 22px;
}
.footer-inner{
  display:flex; align-items:flex-start; justify-content:space-between; gap:16px;
  padding:0 18px;
}
.footer-links{display:flex; gap:12px; flex-wrap:wrap}
.footer-links a{color:var(--muted); text-decoration:underline; text-underline-offset:3px}
.footer-links a:hover{color:var(--text)}
.footnote{margin-top:12px; padding:0 18px}