*{box-sizing:border-box;margin:0;padding:0}
body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:#f1f5f9;color:#0f172a;line-height:1.6;min-height:100vh}
.container{width:min(100%,-webkit-fill-available,1100px);margin:0 auto;padding:1rem 1.5rem}
.topbar{background:#111827;color:#f8fafc;padding:1.15rem 0;border-bottom:1px solid #334155}
.topbar h1{font-size:1.45rem;margin-bottom:.35rem}
.topbar p{font-size:.95rem;opacity:.86}
.lang-switch{margin-top:.75rem}
.lang-switch button{margin:.1rem .2rem;padding:.45rem .75rem;border:none;border-radius:999px;cursor:pointer;font-weight:600;background:#334155;color:#e2e8f0}
.lang-switch button:hover{background:#475569}
.lang-switch button.active{background:#38bdf8;color:#0f172a}
.hero{background:#e2e8f0;border-left:.35rem solid #0ea5e9;padding:1rem 1rem 1.2rem;margin:1rem 0;border-radius:.6rem}
.hero h2{font-size:1.18rem;margin-bottom:.55rem}
.hero p{margin:.6rem 0;font-size:1rem}
.links a{margin-right:1rem;color:#0ea5e9;text-decoration:none;font-weight:700}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem;margin-top:1rem}
.cards article{background:#ffffff;border:1px solid #cbd5e1;border-radius:.6rem;padding:.95rem;box-shadow:0 1px 3px rgba(15,23,42,.08)}
.cards h3{font-size:1.05rem;margin-bottom:.5rem}
.cards ul, .cards ol{margin:.4rem 0 0 1.3rem}
.conclusion{margin-top:1.2rem;padding:1rem;border-left:.3rem solid #22c55e;background:#ecfdf5;border-radius:.5rem}
.conclusion h3{font-size:1.05rem;margin-bottom:.5rem}
.conclusion p{margin:.5rem 0}
footer{margin:1.5rem 0 2rem;font-size:.9rem;color:#475569}
.btn{display:inline-block;padding:.65rem 1rem;border-radius:.45rem;background:#0ea5e9;color:#fff;font-weight:700;text-decoration:none;border:1px solid transparent;transition:.2s}
.btn:hover{background:#06b6d4}
pre{background:#0f172a;color:#e2e8f0;padding:.65rem 1rem;border-radius:.45rem;overflow:auto}
@media (max-width:640px){.topbar h1{font-size:1.2rem}.topbar p{font-size:.85rem}}