:root {
    --bg: #f7fbfb;
    --bg-soft: #eef6f6;
    --text: #132431;
    --muted: #5b6b7a;
    --accent: #2aaab1;
    --accent-strong: #187b84;
    --accent-dark: #0f5f67;
    --accent-soft: rgba(42, 170, 177, 0.12);
    --warm: #ffb145;
    --line: rgba(19, 36, 49, 0.1);
    --shadow-md: 0 22px 54px rgba(19, 36, 49, 0.1);
    --shadow-sm: 0 10px 28px rgba(19, 36, 49, 0.07);
    --max: 1120px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Manrope', system-ui, sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: 'Sora', 'Manrope', sans-serif; line-height: 1.2; letter-spacing: -0.02em; }
.container { width: min(100% - 40px, var(--max)); margin-inline: auto; }

/* Botões */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 24px; border-radius: 14px; font-weight: 800; font-size: .98rem; text-decoration: none; border: 2px solid transparent; white-space: nowrap; transition: transform .15s ease, background .15s ease; }
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--accent-strong); color: #fff; box-shadow: 0 12px 26px rgba(24, 123, 132, .3); }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { background: #fff; color: var(--text); border-color: var(--line); }
.btn-warm { background: var(--warm); color: #3b2500; }

/* Header e rodapé (iguais aos da landing) */
.header { position: sticky; top: 0; z-index: 50; background: rgba(247, 251, 251, .92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: 'Sora', sans-serif; font-weight: 800; font-size: 1.15rem; text-decoration: none; }
.brand img { width: 34px; height: 34px; }
.nav-links { display: none; gap: 26px; font-weight: 700; font-size: .93rem; color: var(--muted); }
.nav-links a { text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--accent-strong); }
.nav-actions .btn { min-height: 42px; padding: 0 18px; font-size: .92rem; }
.footer { padding: 36px 0 28px; color: var(--muted); font-size: .88rem; margin-top: 64px; border-top: 1px solid var(--line); background: #fff; }
.footer-bar { display: grid; gap: 16px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 20px; font-weight: 700; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--accent-strong); }

/* Chip e migalhas */
.eyebrow { display: inline-flex; padding: 6px 14px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-dark); font-size: .78rem; font-weight: 800; text-decoration: none; }
.crumbs { display: flex; flex-wrap: wrap; gap: 6px; font-size: .84rem; font-weight: 700; color: var(--muted); margin: 28px 0 18px; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { color: var(--accent-strong); }
.crumbs span[aria-hidden] { opacity: .5; }

/* Índice do blog */
.blog-hero { padding: 56px 0 28px; text-align: center; background: radial-gradient(circle at 85% 0%, rgba(42, 170, 177, .14), transparent 45%); }
.blog-hero h1 { font-size: clamp(2rem, 6.5vw, 3rem); margin-top: 14px; }
.blog-hero p { color: var(--muted); max-width: 620px; margin: 14px auto 0; font-size: 1.05rem; }
.cards { display: grid; gap: 20px; margin-top: 36px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 26px; box-shadow: var(--shadow-sm); text-decoration: none; display: flex; flex-direction: column; gap: 12px; transition: transform .2s ease, box-shadow .2s ease; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.card h2 { font-size: 1.25rem; }
.card p { color: var(--muted); font-size: .96rem; flex: 1; }
.meta { display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: center; font-size: .82rem; color: var(--muted); font-weight: 700; }
.meta .tag { color: var(--accent-dark); }
.more { color: var(--accent-strong); font-weight: 800; font-size: .92rem; }

/* Artigo */
.post-head h1 { font-size: clamp(1.9rem, 5.6vw, 2.8rem); margin: 14px 0 16px; }
.post-head .lead { color: var(--muted); font-size: 1.12rem; max-width: 760px; }
.post-head .meta { margin-top: 18px; }
.layout { display: grid; gap: 36px; margin-top: 32px; }
.prose { max-width: 740px; font-size: 1.06rem; line-height: 1.8; }
.prose > * + * { margin-top: 1.15em; }
.prose h2 { font-size: 1.55rem; margin-top: 2em; scroll-margin-top: 84px; }
.prose h3 { font-size: 1.2rem; margin-top: 1.6em; scroll-margin-top: 84px; }
.prose a { color: var(--accent-strong); font-weight: 700; text-underline-offset: 3px; }
.prose ul, .prose ol { padding-left: 1.4em; display: grid; gap: .5em; }
.prose li::marker { color: var(--accent-strong); font-weight: 800; }
.prose blockquote { border-left: 4px solid var(--accent); background: var(--accent-soft); padding: 14px 18px; border-radius: 0 14px 14px 0; color: var(--accent-dark); font-weight: 600; }
.prose pre { background: #12303a; color: #e6f3f4; padding: 20px; border-radius: 16px; overflow-x: auto; font-size: .92rem; line-height: 1.7; white-space: pre-wrap; }
.prose code { background: var(--accent-soft); padding: 2px 6px; border-radius: 6px; font-size: .92em; }
.prose pre code { background: none; padding: 0; }
.prose table { width: 100%; border-collapse: collapse; font-size: .95rem; display: block; overflow-x: auto; }
.prose th, .prose td { padding: 11px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { background: var(--bg-soft); font-weight: 800; white-space: nowrap; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2em 0; }
.prose strong { font-weight: 800; }
.aside { display: grid; gap: 18px; align-content: start; }
.toc, .side-cta { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 20px; box-shadow: var(--shadow-sm); }
.toc strong, .side-cta strong { display: block; font-family: 'Sora', sans-serif; margin-bottom: 10px; }
.toc ol { list-style: none; display: grid; gap: 8px; font-size: .92rem; font-weight: 700; }
.toc a { color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--accent-strong); }
.side-cta p { color: var(--muted); font-size: .92rem; margin-bottom: 14px; }
.side-cta .btn { width: 100%; }
.post-cta { margin-top: 3em; background: linear-gradient(135deg, var(--accent-dark), var(--accent-strong) 55%, var(--accent)); color: #fff; border-radius: 24px; padding: 34px 26px; text-align: center; }
.post-cta h2 { color: #fff; font-size: 1.5rem; margin-top: 0; }
.post-cta p { opacity: .92; margin: 10px auto 22px; max-width: 520px; }
.note { font-size: .85rem; color: var(--muted); margin-top: 2em; padding-top: 1.2em; border-top: 1px solid var(--line); }
.related { margin-top: 56px; }
.related h2 { font-size: 1.4rem; }

/* Calculadora (componente) */
.calc { margin: 2em 0; background: #fff; border: 2px solid var(--accent); border-radius: 22px; padding: 24px; box-shadow: var(--shadow-md); font-size: 1rem; line-height: 1.5; }
.calc-badge { display: inline-block; padding: 4px 12px; border-radius: 999px; background: var(--warm); color: #3b2500; font-size: .74rem; font-weight: 800; }
.calc-head h3 { margin: 10px 0 6px; font-size: 1.35rem; }
.calc-head p { color: var(--muted); font-size: .95rem; }
.calc-grid { display: grid; gap: 14px; margin-top: 20px; }
.calc-field label { display: block; font-weight: 800; font-size: .85rem; margin-bottom: 6px; }
.calc-field input { width: 100%; min-height: 46px; border-radius: 12px; border: 2px solid var(--line); padding: 0 14px; font: inherit; font-weight: 700; color: var(--text); background: #fff; }
.calc-field input:focus, .calc-msg textarea:focus { outline: none; border-color: var(--accent-strong); }
.calc-field small { display: block; margin-top: 5px; color: var(--muted); font-size: .76rem; font-weight: 600; }
.calc-result { margin-top: 22px; padding-top: 20px; border-top: 1px dashed var(--line); }
.calc-total { display: flex; justify-content: space-between; align-items: center; gap: 12px; background: var(--accent-soft); border-radius: 14px; padding: 14px 16px; font-weight: 800; }
.calc-total strong { font-family: 'Sora', sans-serif; font-size: 1.6rem; color: var(--accent-dark); }
.calc-break { display: grid; gap: 4px; margin: 12px 4px 0; font-size: .9rem; }
.calc-break div { display: flex; justify-content: space-between; gap: 12px; }
.calc-break dt { color: var(--muted); font-weight: 600; }
.calc-break dd { font-weight: 800; }
.calc-result h4 { margin: 20px 0 10px; font-family: 'Sora', sans-serif; font-size: 1.05rem; }
.calc-models { list-style: none; padding: 0; display: grid; gap: 8px; }
.calc-models li { display: grid; gap: 2px; border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; font-size: .92rem; }
.calc-models li::marker { content: ""; }
.calc-models span { color: var(--accent-dark); font-weight: 800; }
.calc-msg { margin-top: 18px; display: grid; gap: 8px; }
.calc-msg label { font-weight: 800; font-size: .85rem; }
.calc-msg textarea { width: 100%; border-radius: 12px; border: 2px solid var(--line); padding: 12px 14px; font: inherit; font-size: .95rem; color: var(--text); background: var(--bg); resize: vertical; }
.calc-note { margin-top: 14px; color: var(--muted); font-size: .8rem; }

@media (min-width: 720px) {
    .calc-grid { grid-template-columns: repeat(2, 1fr); }
    .cards { grid-template-columns: repeat(2, 1fr); }
    .footer-bar { grid-template-columns: 1fr auto auto; align-items: center; }
}
@media (min-width: 960px) {
    .nav-links { display: flex; }
    .layout { grid-template-columns: minmax(0, 1fr) 300px; gap: 56px; }
    .aside { position: sticky; top: 88px; }
    .cards.three { grid-template-columns: repeat(3, 1fr); }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .card { transition: none; } }