:root{
  --bg:#fffdf7; --text:#1f2937; --muted:#6b7280;
  --primary:#f59e0b; --primary-dark:#b45309;
  --card:#ffffff; --border:#e5e7eb; --radius:12px;
  --max:1100px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
.container{max-width:var(--max);margin:0 auto;padding:0 1rem}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.skip-link{position:absolute;left:-999px;background:#000;color:#fff;padding:.5rem 1rem;z-index:99}
.skip-link:focus{left:0}

/* Header */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:60px}
.logo{font-weight:800;text-decoration:none;color:var(--text);font-size:1.2rem}
.nav-toggle{display:block;background:none;border:1px solid var(--border);border-radius:8px;font-size:1.3rem;padding:.2rem .7rem;cursor:pointer}
.main-nav{display:none;width:100%}
.main-nav.open{display:block}
.main-nav ul{list-style:none;margin:0;padding:.5rem 0;display:flex;flex-direction:column;gap:.25rem}
.main-nav a{text-decoration:none;color:var(--text);padding:.5rem .25rem;display:block;border-radius:8px}
.main-nav a:hover{background:#fef3c7}
.header-inner{flex-wrap:wrap}
@media(min-width:768px){
  .nav-toggle{display:none}
  .main-nav{display:block!important;width:auto}
  .main-nav ul{flex-direction:row;gap:1rem}
}

/* Hero */
.hero{background:linear-gradient(135deg,#fef3c7,#fde68a);padding:3rem 0;text-align:center}
.hero h1{margin:0 0 .5rem;font-size:clamp(1.6rem,4vw,2.5rem);line-height:1.2}
.hero p{color:#444;margin:0 auto 1.5rem;max-width:600px}
.search-bar input{width:100%;max-width:520px;padding:.9rem 1rem;border:1px solid var(--border);border-radius:999px;font-size:1rem}
.filters{margin-top:1rem;display:flex;gap:.5rem;justify-content:center;flex-wrap:wrap}
.filters button{border:1px solid var(--primary-dark);background:#fff;color:var(--primary-dark);border-radius:999px;padding:.45rem 1rem;cursor:pointer;font-weight:600}
.filters button.active,.filters button:hover{background:var(--primary);border-color:var(--primary);color:#000}

/* Grid */
#artigos{padding:2rem 1rem 3rem}
.grid{display:grid;grid-template-columns:1fr;gap:1rem}
@media(min-width:640px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:960px){.grid{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .15s ease}
.card:hover{transform:translateY(-3px)}
.card img{width:100%;height:180px;object-fit:cover;background:#eee}
.card-body{padding:1rem;display:flex;flex-direction:column;gap:.5rem;flex:1}
.badge{align-self:flex-start;background:#fef3c7;color:var(--primary-dark);font-size:.75rem;font-weight:700;padding:.2rem .6rem;border-radius:999px;text-transform:uppercase}
.card h3{margin:0;font-size:1.1rem;line-height:1.35}
.card h3 a{color:inherit;text-decoration:none}
.card h3 a:hover{color:var(--primary-dark)}
.card p{margin:0;color:var(--muted);font-size:.95rem;flex:1}
.meta{font-size:.8rem;color:var(--muted)}
.resultado-info{color:var(--muted);min-height:1.5em}

/* Footer */
.site-footer{background:#111827;color:#d1d5db;margin-top:2rem}
.footer-grid{display:grid;grid-template-columns:1fr;gap:1rem;padding:2rem 1rem}
.site-footer a{color:#d1d5db;text-decoration:none}
.site-footer a:hover{color:#fff;text-decoration:underline}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:.4rem}
.copyright{border-top:1px solid #374151;padding:1rem;text-align:center}
@media(min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr}}

/* Artigo */
.article-hero img{width:100%;max-height:380px;object-fit:cover;border-radius:var(--radius)}
.article-content{max-width:720px;margin:0 auto}
.article-content img{max-width:100%;height:auto;border-radius:8px}