/* Base */
*{box-sizing:border-box}
:root{
  --bg:#0b1220;
  --card:#0f1a33;
  --muted:#9fb2d9;
  --text:#e9eef7;
  --brand:#3b82f6;
  --brand-2:#8b5cf6;
  --border:#22304d;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}
body{margin:0;background:radial-gradient(1200px 500px at 20% -20%,rgba(59,130,246,.25),transparent),radial-gradient(800px 400px at 100% 0,rgba(139,92,246,.18),transparent),var(--bg);color:var(--text);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,Arial,sans-serif}
a{color:var(--brand);text-decoration:none}
.container{max-width:1000px;margin:0 auto;padding:16px}
.muted{color:var(--muted);}
/* Header/nav */
.site-header{position:sticky;top:0;background:linear-gradient(180deg,rgba(11,18,32,.98),rgba(11,18,32,.94));backdrop-filter:blur(6px);border-bottom:1px solid rgba(255,255,255,.06);z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{font-weight:800;font-size:18px;color:#fff}
.nav-links a{margin-left:12px;color:#dfe7ff}
.hero{display:grid;grid-template-columns:1fr;gap:18px;padding:12px 0 18px}
.hero-text h1{font-size:40px;margin:8px 0 6px}
.badge{display:inline-block;background:linear-gradient(45deg,var(--brand),var(--brand-2));color:#fff;padding:2px 8px;border-radius:999px;font-size:14px;margin-left:6px}
.tagline{color:var(--muted);max-width:760px}
.cta-row{margin:16px 0 8px;display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 14px;border-radius:12px;border:1px solid var(--border);background:rgba(255,255,255,.04);color:var(--text);font-weight:700;cursor:pointer;box-shadow:var(--shadow)}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:linear-gradient(45deg,var(--brand),var(--brand-2));border:none;color:#fff}
.btn.ghost{background:transparent}
.btn.wide{width:100%}
/* Cards & tools */
.card{background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.03));border:1px solid var(--border);border-radius:18px;padding:18px;margin:18px 0;box-shadow:var(--shadow)}
.card h2{margin:0 0 6px}
.tool .tool-body{margin-top:12px}
input[type=file]{display:block;margin:10px 0}
label{display:flex;flex-direction:column;gap:6px}
.grid.two{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px}
.hint{color:var(--muted)}

/* Blog */
.blog-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
.post-card{padding:14px;border:1px solid var(--border);border-radius:14px;background:rgba(255,255,255,.04)}
.post-card h3{margin:6px 0}
.post{max-width:860px;margin:0 auto}
.post h1{font-size:32px;margin:10px 0}
.post .meta{color:var(--muted);font-size:14px;margin-bottom:14px}
.post p{margin:10px 0}
ol.step{padding-left:20px}
.list{padding-left:18px}

/* Footer */
.site-footer{border-top:1px solid rgba(255,255,255,.06);margin-top:30px}
.site-footer .foot{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0}
@media (max-width:640px){.site-footer .foot{flex-direction:column}}