:root{--bg:#0b1220;--card:#111a2b;--muted:#9fb0cc;--txt:#e9f0ff;--acc:#7dd3fc;--acc2:#a7f3d0;--line:#1d2a44}
*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Arial,sans-serif;background:linear-gradient(180deg,#070c17, #0b1220);color:var(--txt)}
a{color:var(--acc);text-decoration:none}a:hover{text-decoration:underline}
.container{max-width:1020px;margin:0 auto;padding:20px}
.nav{display:flex;gap:14px;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line)}
.brand{display:flex;gap:10px;align-items:center}
.logo{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--acc),var(--acc2));display:inline-block}
.brand b{letter-spacing:.3px}
.nav a{color:var(--txt);opacity:.9}
.nav .links{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end}
.hero{padding:26px 0 18px}
.hero h1{margin:0 0 10px;font-size:34px}
.hero p{margin:0;color:var(--muted);max-width:78ch;line-height:1.55}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:14px;margin:14px 0 22px}
.card{grid-column:span 6;background:rgba(17,26,43,.9);border:1px solid var(--line);border-radius:14px;padding:16px}
.card h3{margin:0 0 8px}
.card p{margin:0;color:var(--muted);line-height:1.5}
.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 10px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:13px}
.cta-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 12px;border-radius:12px;border:1px solid var(--line);color:var(--txt);background:rgba(17,26,43,.7);cursor:pointer}
.btn:hover{border-color:rgba(125,211,252,.6)}
.btn-amazon{background:linear-gradient(135deg,#f59e0b,#fbbf24);color:#1b1205;border:0;font-weight:700}
.small{font-size:13px;color:var(--muted)}
.section{margin:18px 0}
.section h2{margin:0 0 10px}
.list{margin:0;padding-left:18px;color:var(--muted);line-height:1.6}
.kit{background:rgba(17,26,43,.9);border:1px solid var(--line);border-radius:14px;padding:14px;margin:14px 0}
.table{width:100%;border-collapse:collapse;margin-top:8px}
.table th,.table td{border-top:1px solid var(--line);padding:10px;vertical-align:top}
.table th{color:var(--muted);text-align:left;font-weight:600}
.muted{color:var(--muted)}
.footer{border-top:1px solid var(--line);padding:16px 0;margin-top:28px;color:var(--muted);display:flex;gap:12px;flex-wrap:wrap;justify-content:space-between}
.footer a{color:var(--muted)}
.toc p{margin:10px 0}
@media (max-width:820px){.card{grid-column:span 12}.hero h1{font-size:28px}}