:root {
    --navy: #071426;
    --navy-light: #0d2240;
    --gold: #d4af37;
    --gold-soft: #b8941f;
    --gold-bg: #f6efdd;
    --ink: #1a1a1a;
    --muted: #5b6470;
    --bg: #f4f5f7;
    --paper: #ffffff;
    --line: #e7e2d4;
    --green: #1e8a4b;
    --green-bg: #eef7f0;
    --red: #b3261e;
    --red-bg: #fbeae9;
    --font-title: 'Playfair Display', serif;
    --font-body: 'Montserrat', sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font-body); background: var(--bg); color: var(--ink); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

/* faixa tricolore */
.tricolore { height: 4px; display: flex; }
.tricolore i { flex: 1; }
.tricolore i:nth-child(1){ background: var(--navy-light); } .tricolore i:nth-child(2){ background:#fff; } .tricolore i:nth-child(3){ background: var(--gold); }

/* top bar */
.topbar { background: var(--navy); padding: 16px 24px; display: flex; align-items: center; justify-content: space-between; }
.topbar .logo { font-family: var(--font-title); color: #fff; font-size: 1.25rem; font-weight: 600; }
.topbar .logo span { color: var(--gold); }
.topbar a.cta { color: var(--gold); font-size: .88rem; font-weight: 500; border: 1px solid var(--gold); padding: 8px 16px; border-radius: 999px; transition: .2s; }
.topbar a.cta:hover { background: var(--gold); color: var(--navy); }

/* breadcrumb */
.breadcrumb { max-width: 760px; margin: 0 auto; padding: 18px 24px 0; font-size: .78rem; color: #8a93a0; }
.breadcrumb a:hover { color: var(--gold-soft); }

/* artigo */
.wrap { max-width: 760px; margin: 0 auto; padding: 24px; }
.art-head { padding: 22px 0 10px; }
.art-head .kicker { text-transform: uppercase; letter-spacing: 3px; font-size: .68rem; color: var(--gold-soft); font-weight: 700; margin-bottom: 14px; }
.art-head h1 { font-family: var(--font-title); font-size: 2.4rem; line-height: 1.12; color: var(--navy); }
.art-head .sub { color: var(--muted); font-size: 1.05rem; margin-top: 14px; }
.art-meta { font-size: .8rem; color: #8a93a0; margin-top: 18px; display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.art-meta .by strong { color: var(--navy); }

/* resposta direta (snippet) */
.tldr { background: var(--gold-bg); border: 1px solid #ecdfba; border-left: 4px solid var(--gold); border-radius: 0 12px 12px 0; padding: 18px 22px; margin: 24px 0; font-size: 1.05rem; }

/* sumário */
.toc { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 18px 22px; margin: 24px 0; }
.toc strong { font-family: var(--font-title); color: var(--navy); display: block; margin-bottom: 8px; }
.toc ol { margin: 0; padding-left: 20px; } .toc li { margin: 4px 0; } .toc a { color: var(--muted); } .toc a:hover { color: var(--gold-soft); }

/* corpo */
.art-body { font-size: 1.06rem; color: #2a2f38; }
.art-body h2 { font-family: var(--font-title); font-size: 1.6rem; color: var(--navy); margin: 38px 0 12px; padding-top: 14px; }
.art-body h3 { font-family: var(--font-title); font-size: 1.2rem; color: var(--navy-light); margin: 24px 0 8px; }
.art-body p { margin: 12px 0; }
.art-body ul, .art-body ol { margin: 12px 0; padding-left: 24px; } .art-body li { margin: 6px 0; }
.art-body strong { color: var(--navy); }
.fr { color: var(--navy); font-weight: 600; }
.pt-gloss { color: var(--muted); font-style: italic; }

/* tabela */
.t-wrap { overflow-x: auto; margin: 18px 0; border-radius: 12px; }
table { width: 100%; border-collapse: collapse; background: var(--paper); border-radius: 12px; overflow: hidden; box-shadow: 0 1px 3px rgba(7,20,38,.06); min-width: 420px; }
th, td { padding: 11px 14px; text-align: left; border-bottom: 1px solid #eef0f3; font-size: .95rem; }
th { background: #f1ece0; font-weight: 600; color: var(--navy); }

/* caixas */
.box { border-radius: 12px; padding: 18px 22px; margin: 22px 0; }
.box-title { font-family: var(--font-title); font-weight: 600; font-size: 1.1rem; margin-bottom: 8px; }
.erro-br { background: var(--red-bg); border-left: 4px solid var(--red); }
.erro-br .box-title { color: var(--red); }
.dica { background: var(--green-bg); border-left: 4px solid var(--green); }
.dica .box-title { color: var(--green); }
.exemplo { background: var(--bg); border-left: 3px solid var(--gold); padding: 14px 20px; border-radius: 0 10px 10px 0; margin: 16px 0; }

/* dica do nativo (voz do Yann) */
.nativo { background: linear-gradient(135deg, var(--navy), var(--navy-light)); color: #fff; border-radius: 16px; padding: 26px 30px; margin: 30px 0; }
.nativo .lbl { font-size: .68rem; text-transform: uppercase; letter-spacing: 2px; color: var(--gold); font-weight: 700; margin-bottom: 10px; }
.nativo p { color: #e8ecf2; font-style: italic; }

/* exercício */
.exo { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 18px 22px; margin: 22px 0; }
.exo .box-title { color: var(--navy); }
.exo ol { margin: 8px 0 0; padding-left: 22px; } .exo li { margin: 8px 0; }
.exo details { margin-top: 12px; } .exo summary { cursor: pointer; color: var(--gold-soft); font-weight: 600; font-size: .9rem; }
.exo .gab { margin-top: 8px; font-size: .95rem; color: var(--muted); }

/* CTA */
.cta-box { margin-top: 36px; background: linear-gradient(135deg, var(--navy), var(--navy-light)); color: #fff; border-radius: 16px; padding: 32px; text-align: center; }
.cta-box h3 { font-family: var(--font-title); font-size: 1.45rem; margin-bottom: 10px; }
.cta-box p { color: #cdd6e2; font-size: .95rem; margin-bottom: 20px; }
.cta-box a { display: inline-block; background: var(--gold); color: var(--navy); font-weight: 600; padding: 13px 30px; border-radius: 999px; transition: .2s; }
.cta-box a:hover { background: #e8c34f; transform: translateY(-2px); }

/* relacionados */
.relacionados { margin-top: 36px; }
.relacionados h2 { font-family: var(--font-title); font-size: 1.3rem; color: var(--navy); margin-bottom: 14px; }
.rel-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.rel-card { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; transition: .2s; }
.rel-card:hover { transform: translateY(-2px); border-color: var(--gold); }
.rel-card .c { font-size: .68rem; text-transform: uppercase; letter-spacing: 1px; color: var(--gold-soft); font-weight: 700; }
.rel-card .t { font-weight: 600; color: var(--navy); margin-top: 6px; font-size: .95rem; }

footer { background: var(--navy); color: #8a93a0; text-align: center; padding: 30px 24px; margin-top: 40px; font-size: .82rem; }
footer .logo { font-family: var(--font-title); color: #fff; font-size: 1.1rem; margin-bottom: 8px; }
footer a:hover { color: var(--gold); }

/* índice do blog */
.blog-hero { background: linear-gradient(135deg, var(--navy), var(--navy-light)); color: #fff; text-align: center; padding: 64px 24px 54px; }
.blog-hero .kicker { text-transform: uppercase; letter-spacing: 3px; font-size: .7rem; color: var(--gold); font-weight: 700; margin-bottom: 14px; }
.blog-hero h1 { font-family: var(--font-title); font-size: 2.6rem; margin-bottom: 12px; }
.blog-hero p { color: #cdd6e2; max-width: 560px; margin: 0 auto; }
.cluster { margin: 40px 0; }
.cluster h2 { font-family: var(--font-title); font-size: 1.5rem; color: var(--navy); margin-bottom: 4px; }
.cluster .desc { color: var(--muted); font-size: .92rem; margin-bottom: 16px; }
.post-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.post-card { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; transition: .2s; }
.post-card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(7,20,38,.08); border-color: var(--gold); }
.post-card.pilar { background: linear-gradient(135deg, var(--navy), var(--navy-light)); color: #fff; }
.post-card .badge { font-size: .64rem; text-transform: uppercase; letter-spacing: 1.5px; color: var(--gold-soft); font-weight: 700; }
.post-card.pilar .badge { color: var(--gold); }
.post-card .t { font-weight: 600; margin-top: 8px; font-size: 1rem; }
.post-card.pilar .t { color: #fff; }

@media (max-width: 600px) {
    .art-head h1 { font-size: 1.8rem; }
    .blog-hero h1 { font-size: 2rem; }
    .wrap { padding: 18px; }
}