:root{--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--color-brand-primary:#0f172a;--color-brand-accent:#0284c7;--color-brand-accent-hover:#0369a1;--color-emerald-bg:#ecfdf5;--color-emerald-border:#a7f3d0;--color-emerald-text:#047857;--color-emerald-heading:#065f46;--color-badge-blue-bg:#e0f2fe;--color-badge-blue-text:#0369a1;--color-badge-amber-bg:#fef3c7;--color-badge-amber-text:#b45309;--color-badge-slate-bg:#f1f5f9;--color-badge-slate-text:#475569;--color-bg-main:#f8fafc;--color-bg-card:#ffffff;--color-border-subtle:#e2e8f0;--color-border-hover:#cbd5e1;--color-text-main:#1e293b;--color-text-muted:#64748b;--color-text-subtle:#94a3b8;--shadow-sm:0 1px 2px 0 rgb(0 0 0/0.05);--shadow-md:0 4px 6px -1px rgb(0 0 0/0.1),0 2px 4px -2px rgb(0 0 0/0.1);--shadow-lg:0 10px 15px -3px rgb(0 0 0/0.1),0 4px 6px -4px rgb(0 0 0/0.1);--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-full:9999px}*{box-sizing:border-box;padding:0;margin:0}body,html{max-width:100vw;overflow-x:hidden;font-family:var(--font-sans);background-color:var(--color-bg-main);color:var(--color-text-main);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--color-brand-accent);text-decoration:none;transition:color .15s ease}a:hover{color:var(--color-brand-accent-hover);text-decoration:underline}.container{max-width:1100px}.container,.container-narrow{width:100%;margin:0 auto;padding:0 1rem}.container-narrow{max-width:800px}.card{background:var(--color-bg-card);border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease}.card:hover{box-shadow:var(--shadow-md)}.card-hero-result{background:linear-gradient(135deg,#ffffff,#f0fdf4);border:2px solid var(--color-emerald-border);box-shadow:var(--shadow-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-weight:600;padding:.75rem 1.5rem;border-radius:var(--radius-md);border:none;cursor:pointer;font-size:1rem;transition:background-color .15s ease,transform .1s ease}.btn-primary{background-color:var(--color-brand-accent);color:#ffffff}.btn-primary:hover{background-color:var(--color-brand-accent-hover);text-decoration:none;transform:translateY(-1px)}.btn-emerald{background-color:var(--color-emerald-text);color:#ffffff}.btn-emerald:hover{background-color:var(--color-emerald-heading);text-decoration:none;transform:translateY(-1px)}.btn-outline{background-color:transparent;border:1px solid var(--color-border-subtle);color:var(--color-text-main)}.btn-outline:hover{background-color:var(--color-bg-main);border-color:var(--color-border-hover);text-decoration:none}.input-field{width:100%;padding:.875rem 1rem;font-size:1.25rem;font-weight:600;border:2px solid var(--color-border-subtle);border-radius:var(--radius-md);outline:none;transition:border-color .15s ease;background-color:#ffffff}.input-field:focus{border-color:var(--color-brand-accent);box-shadow:0 0 0 3px rgba(2,132,199,.15)}.badge{display:inline-block;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:.25rem .625rem;border-radius:var(--radius-full)}.badge-isento{background-color:var(--color-emerald-bg);color:var(--color-emerald-text);border:1px solid var(--color-emerald-border)}.badge-reducao{background-color:var(--color-badge-blue-bg);color:var(--color-badge-blue-text)}.badge-padrao{background-color:var(--color-badge-slate-bg);color:var(--color-badge-slate-text)}.text-emerald{color:var(--color-emerald-text)}.text-muted{color:var(--color-text-muted)}.header-nav{background:var(--color-bg-card);border-bottom:1px solid var(--color-border-subtle);position:-webkit-sticky;position:sticky;top:0;z-index:50}.header-content{justify-content:space-between;height:64px}.brand-logo,.header-content{display:flex;align-items:center}.brand-logo{font-size:1.125rem;font-weight:800;color:var(--color-brand-primary);gap:.5rem}.brand-logo span{color:var(--color-brand-accent)}.footer-section{background-color:var(--color-brand-primary);color:#94a3b8;padding:3rem 0 2rem;margin-top:4rem}.footer-section a{color:#cbd5e1}.footer-section a:hover{color:#ffffff}.grid-2,.grid-3{display:grid;grid-template-columns:1fr;grid-gap:1.5rem;gap:1.5rem}.grid-4{display:grid;grid-template-columns:1fr;grid-gap:1rem;gap:1rem}@media (min-width:640px){.grid-4{grid-template-columns:repeat(2,1fr)}}@media (min-width:768px){.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}}.faq-item{border-bottom:1px solid var(--color-border-subtle);padding:1rem 0}.faq-question{font-weight:700;font-size:1.1rem;color:var(--color-brand-primary);margin-bottom:.5rem}.faq-answer{color:var(--color-text-muted);font-size:.95rem}