/* Blog — artigo individual */

:root {
    --article-brand: #19375c;
    --article-brand-light: #24507a;
    --article-on-dark: #ffffff;
    --article-on-dark-muted: rgba(255, 255, 255, 0.88);
    --article-on-dark-soft: rgba(255, 255, 255, 0.78);
}

.blog-article-page {
    background: var(--white);
}

/* Hero */
.blog-hero {
    background: linear-gradient(165deg, var(--article-brand) 0%, #0f2844 100%);
    color: var(--white);
    padding: clamp(2.5rem, 6vw, 4rem) 0 clamp(2rem, 5vw, 3rem);
}

.blog-hero-inner {
    max-width: 820px;
    margin: 0 auto;
}

.blog-hero-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem 0.5rem;
    font-size: 0.82rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    opacity: 0.85;
}

.blog-hero-breadcrumb a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
}

.blog-hero-breadcrumb a:hover {
    text-decoration: underline;
}

.blog-hero-breadcrumb span[aria-hidden="true"] {
    opacity: 0.55;
}

.blog-hero-badge {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.22);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.blog-hero h1 {
    font-size: clamp(1.65rem, 4.2vw, 2.55rem);
    font-weight: 800;
    line-height: 1.18;
    letter-spacing: -0.03em;
    margin: 0 0 1rem;
    color: var(--article-on-dark);
}

.blog-hero-lead {
    font-size: clamp(1rem, 2vw, 1.15rem);
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.9);
    margin: 0 0 1.35rem;
    max-width: 680px;
}

.blog-hero-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1.25rem;
    font-size: 0.88rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.78);
    margin-bottom: 1.5rem;
}

.blog-hero-meta svg {
    flex-shrink: 0;
    opacity: 0.85;
}

.blog-hero-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.blog-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.blog-hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.65rem 1.15rem;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.blog-hero-btn--primary {
    background: #22c55e;
    color: var(--article-on-dark);
    border: none;
}

.blog-hero-btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(34, 197, 94, 0.35);
}

.blog-hero-btn--ghost {
    background: rgba(255, 255, 255, 0.1);
    color: var(--article-on-dark);
    border: 1px solid rgba(255, 255, 255, 0.28);
}

.blog-hero-btn--ghost:hover {
    background: rgba(255, 255, 255, 0.16);
}

/* Capa do artigo */
.article-cover {
    padding: 0 0 clamp(1.25rem, 3vw, 2rem);
    background: var(--white);
    margin-top: -0.5rem;
}

.article-cover-inner {
    max-width: 820px;
    margin: 0 auto;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--gray-200);
    box-shadow: 0 10px 32px rgba(15, 40, 68, 0.1);
    background: #fff;
}

.article-cover img {
    width: 100%;
    height: auto;
    display: block;
}

/* Layout */
.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: clamp(1.5rem, 4vw, 2.5rem);
    padding: clamp(1.75rem, 4vw, 2.75rem) 0 clamp(2.5rem, 5vw, 4rem);
}

@media (min-width: 1024px) {
    .article-layout {
        grid-template-columns: 240px minmax(0, 1fr);
        align-items: start;
    }
}

/* TOC */
.article-toc {
    display: none;
}

@media (min-width: 1024px) {
    .article-toc {
        display: block;
        position: sticky;
        top: calc(5rem + env(safe-area-inset-top, 0px));
        padding: 1.15rem 1rem;
        border-radius: 12px;
        border: 1px solid var(--gray-200);
        background: var(--gray-50, #f8fafc);
    }

    .article-toc-title {
        font-size: 0.72rem;
        font-weight: 800;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        color: var(--article-brand);
        margin: 0 0 0.85rem;
    }

    .article-toc nav ol {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 0.45rem;
    }

    .article-toc nav a {
        display: block;
        font-size: 0.82rem;
        font-weight: 600;
        line-height: 1.4;
        color: var(--gray-600);
        text-decoration: none;
        padding: 0.2rem 0;
        border-left: 2px solid transparent;
        padding-left: 0.55rem;
        transition: color 0.15s ease, border-color 0.15s ease;
    }

    .article-toc nav a:hover {
        color: var(--article-brand);
        border-left-color: var(--article-brand);
    }
}

.article-toc-mobile {
    margin-bottom: 1.5rem;
    padding: 1rem 1.1rem;
    border-radius: 12px;
    border: 1px solid var(--gray-200);
    background: var(--gray-50, #f8fafc);
}

@media (min-width: 1024px) {
    .article-toc-mobile {
        display: none;
    }
}

.article-toc-mobile summary {
    font-size: 0.88rem;
    font-weight: 800;
    color: var(--article-brand);
    cursor: pointer;
    list-style: none;
}

.article-toc-mobile summary::-webkit-details-marker {
    display: none;
}

.article-toc-mobile nav ol {
    list-style: decimal;
    margin: 0.85rem 0 0 1.1rem;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.article-toc-mobile nav a {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-600);
    text-decoration: none;
}

.article-toc-mobile nav a:hover {
    color: var(--article-brand);
}

/* Body */
.article-body {
    max-width: 760px;
}

.article-body > section {
    margin-bottom: clamp(2rem, 4vw, 2.75rem);
}

.article-body h2 {
    font-size: clamp(1.25rem, 2.8vw, 1.55rem);
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -0.02em;
    line-height: 1.28;
    margin: 0 0 1rem;
    scroll-margin-top: 6rem;
}

.article-body h3 {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--gray-900);
    margin: 1.35rem 0 0.65rem;
}

.article-body p {
    color: var(--gray-600);
    line-height: 1.78;
    margin: 0 0 1rem;
    font-size: 1rem;
}

.article-body ul,
.article-body ol {
    color: var(--gray-600);
    line-height: 1.72;
    margin: 0 0 1rem;
    padding-left: 1.25rem;
}

.article-body li {
    margin-bottom: 0.4rem;
}

.article-body li:last-child {
    margin-bottom: 0;
}

.article-intro-list {
    list-style: none;
    padding: 0;
    margin: 1.25rem 0 0;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.article-intro-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    margin: 0;
    font-weight: 600;
    color: var(--gray-700);
}

.article-intro-list li::before {
    content: "✓";
    flex-shrink: 0;
    width: 1.35rem;
    height: 1.35rem;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: rgba(25, 55, 92, 0.1);
    color: var(--article-brand);
    font-size: 0.72rem;
    font-weight: 800;
}

/* Boxes */
.highlight-box,
.formula-box,
.example-box,
.warning-box {
    border-radius: 12px;
    padding: clamp(1rem, 2.5vw, 1.35rem) clamp(1.1rem, 2.5vw, 1.45rem);
    margin: 1.35rem 0;
}

.highlight-box {
    background: linear-gradient(135deg, rgba(25, 55, 92, 0.07) 0%, rgba(25, 55, 92, 0.03) 100%);
    border-left: 4px solid var(--article-brand);
}

.highlight-box p,
.warning-box p {
    margin: 0;
    font-weight: 600;
    color: var(--gray-800);
    line-height: 1.65;
}

.warning-box {
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
}

.warning-box p {
    color: #92400e;
}

.formula-box {
    background: linear-gradient(145deg, var(--article-brand) 0%, #122a47 100%);
    color: var(--article-on-dark);
    text-align: center;
    padding: clamp(1.35rem, 3vw, 1.85rem);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 28px rgba(15, 40, 68, 0.22);
}

/* Mais específico que .article-body p — evita texto escuro sobre fundo azul */
.article-body .formula-box,
.article-body .formula-box p {
    color: var(--article-on-dark);
}

.formula-box-label {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--article-on-dark-soft);
    margin: 0 0 0.65rem;
}

.formula-box-formula {
    font-size: clamp(0.95rem, 2.2vw, 1.15rem);
    font-weight: 700;
    line-height: 1.55;
    margin: 0;
    font-family: "Inter", system-ui, sans-serif;
    color: var(--article-on-dark);
}

.formula-box-note {
    margin: 0.85rem 0 0;
    font-size: 0.88rem;
    color: var(--article-on-dark-muted);
    line-height: 1.55;
}

.example-box {
    background: var(--gray-50, #f8fafc);
    border: 1px solid var(--gray-200);
}

.example-box-title {
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--article-brand);
    margin: 0 0 0.75rem;
}

.example-box p,
.example-box ul,
.example-box li {
    color: var(--gray-700);
    margin-bottom: 0.65rem;
}

.example-box p:last-child,
.example-box ul:last-child {
    margin-bottom: 0;
}

.example-calc {
    font-family: ui-monospace, "Cascadia Code", monospace;
    font-size: 0.92rem;
    line-height: 1.75;
    color: var(--gray-800);
    background: var(--white);
    border-radius: 8px;
    padding: 0.85rem 1rem;
    border: 1px dashed var(--gray-300);
    margin: 0.85rem 0 0;
}

.example-calc strong {
    color: var(--article-brand);
}

/* Sigla cards */
.sigla-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.85rem;
    margin: 1.35rem 0;
}

@media (min-width: 560px) {
    .sigla-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.sigla-card {
    padding: 1rem 1.1rem;
    border-radius: 10px;
    border: 1px solid var(--gray-200);
    background: var(--white);
}

.sigla-card abbr {
    display: inline-block;
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--article-brand);
    text-decoration: none;
    margin-bottom: 0.35rem;
}

.sigla-card p {
    font-size: 0.88rem;
    margin: 0;
    line-height: 1.55;
    color: var(--gray-600);
}

/* Step cards */
.step-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.85rem;
    margin: 1.25rem 0 0;
}

.step-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.85rem 1rem;
    padding: 1rem 1.1rem;
    border-radius: 10px;
    border: 1px solid var(--gray-200);
    background: var(--white);
}

.step-card-num {
    width: 2rem;
    height: 2rem;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--article-brand);
    color: var(--article-on-dark);
    font-size: 0.85rem;
    font-weight: 800;
    flex-shrink: 0;
}

.step-card h3 {
    font-size: 0.95rem;
    margin: 0 0 0.35rem;
}

.step-card p {
    font-size: 0.88rem;
    margin: 0;
    grid-column: 2;
    color: var(--gray-600);
}

/* Error list */
.error-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1rem 0 0;
    padding: 0;
    list-style: none;
}

.error-item {
    padding: 1rem 1.1rem;
    border-radius: 10px;
    border: 1px solid var(--gray-200);
    background: var(--gray-50, #f8fafc);
}

.error-item h3 {
    font-size: 0.95rem;
    margin: 0 0 0.4rem;
    color: #b45309;
}

.error-item p {
    font-size: 0.9rem;
    margin: 0;
    color: var(--gray-600);
}

/* Checklist */
.checklist {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.checklist li {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    padding: 0.65rem 0.85rem;
    border-radius: 8px;
    background: var(--gray-50, #f8fafc);
    border: 1px solid var(--gray-200);
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--gray-700);
    margin: 0;
}

.checklist li::before {
    content: "";
    width: 1.1rem;
    height: 1.1rem;
    flex-shrink: 0;
    margin-top: 0.15rem;
    border: 2px solid var(--article-brand);
    border-radius: 3px;
    background: #fff;
}

/* Compare table */
.compare-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.85rem;
    margin: 1.25rem 0;
}

@media (min-width: 560px) {
    .compare-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.compare-card {
    padding: 1rem 1.1rem;
    border-radius: 10px;
    border: 1px solid var(--gray-200);
    background: #fff;
}

.compare-card--bad {
    background: #fef2f2;
    border-color: #fecaca;
}

.compare-card--good {
    background: #f0fdf4;
    border-color: #bbf7d0;
}

.compare-card h3 {
    font-size: 0.88rem;
    margin: 0 0 0.65rem;
    color: var(--gray-900);
}

.compare-card ul {
    margin: 0;
    font-size: 0.88rem;
    color: var(--gray-600);
}

/* Inline CTA */
.article-inline-cta {
    margin: 2rem 0;
    padding: clamp(1.25rem, 3vw, 1.65rem);
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(25, 55, 92, 0.08) 0%, rgba(25, 55, 92, 0.03) 100%);
    border: 1px solid rgba(25, 55, 92, 0.15);
    text-align: center;
}

.article-inline-cta p {
    font-weight: 700;
    color: var(--gray-800);
    margin: 0 0 0.85rem;
}

.article-inline-cta .blog-hero-btn--primary {
    background: var(--article-brand);
    color: var(--article-on-dark);
}

.article-inline-cta .blog-hero-btn--primary:hover {
    box-shadow: 0 8px 24px rgba(25, 55, 92, 0.25);
}

/* Final CTA */
.article-cta-final {
    background: var(--article-brand);
    color: var(--white);
    padding: clamp(2rem, 5vw, 3rem) 0;
    margin-top: 1rem;
}

.article-cta-final-inner {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
}

.article-cta-final h2 {
    font-size: clamp(1.35rem, 3vw, 1.85rem);
    font-weight: 800;
    color: var(--article-on-dark);
    margin: 0 0 0.85rem;
    letter-spacing: -0.02em;
}

.article-cta-final p {
    color: rgba(255, 255, 255, 0.88);
    line-height: 1.65;
    margin: 0 0 1.35rem;
    font-size: 1rem;
}

.article-cta-final-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.65rem;
}

.article-cta-final .blog-hero-btn--primary {
    background: #22c55e;
}

.article-cta-final .blog-hero-btn--ghost {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.4);
}

/* FAQ */
.faq-section {
    margin-top: 0.5rem;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    margin-top: 1rem;
}

.faq-item {
    border: 1px solid var(--gray-200);
    border-radius: 10px;
    overflow: hidden;
    background: var(--white);
}

.faq-item summary {
    padding: 0.95rem 1.1rem;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--gray-900);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--article-brand);
    flex-shrink: 0;
}

.faq-item[open] summary::after {
    content: "−";
}

.faq-item p {
    padding: 0 1.1rem 1rem;
    margin: 0;
    font-size: 0.92rem;
    border-top: 1px solid var(--gray-100);
    padding-top: 0.85rem;
    color: var(--gray-600);
}

/* Ingredient list */
.ingredient-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.5rem;
    list-style: none;
    padding: 0;
    margin: 1rem 0;
}

.ingredient-list li {
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    background: var(--gray-50, #f8fafc);
    border: 1px solid var(--gray-200);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--gray-700);
    margin: 0;
    text-align: center;
}

.cost-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.92rem;
}

.cost-table th,
.cost-table td {
    padding: 0.65rem 0.85rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.cost-table th {
    font-weight: 700;
    color: var(--gray-800);
    background: var(--gray-50, #f8fafc);
}

.cost-table td:last-child {
    font-weight: 700;
    color: var(--article-brand);
    text-align: right;
}

/* Dark theme */
[data-theme="dark"] .blog-article-page {
    background: var(--page-bg);
}

[data-theme="dark"] .blog-hero {
    background: linear-gradient(165deg, #1a3d66 0%, #0d1f35 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .blog-hero h1,
[data-theme="dark"] .blog-hero-lead,
[data-theme="dark"] .blog-hero-meta,
[data-theme="dark"] .blog-hero-breadcrumb,
[data-theme="dark"] .blog-hero-breadcrumb a,
[data-theme="dark"] .blog-hero-btn--ghost,
[data-theme="dark"] .blog-hero-btn--primary {
    color: var(--article-on-dark);
}

[data-theme="dark"] .article-body h2,
[data-theme="dark"] .article-body h3 {
    color: var(--gray-900);
}

[data-theme="dark"] .article-body p,
[data-theme="dark"] .article-body li {
    color: var(--gray-700);
}

[data-theme="dark"] .article-intro-list li {
    color: var(--gray-800);
}

[data-theme="dark"] .article-toc,
[data-theme="dark"] .article-toc-mobile {
    background: var(--gray-100);
    border-color: var(--gray-200);
}

[data-theme="dark"] .article-toc-title,
[data-theme="dark"] .article-toc-mobile summary {
    color: var(--primary-light);
}

[data-theme="dark"] .article-toc nav a,
[data-theme="dark"] .article-toc-mobile nav a {
    color: var(--gray-600);
}

[data-theme="dark"] .article-toc nav a:hover,
[data-theme="dark"] .article-toc-mobile nav a:hover {
    color: var(--primary-light);
    border-left-color: var(--primary-light);
}

[data-theme="dark"] .article-cover {
    background: var(--page-bg);
}

[data-theme="dark"] .article-cover-inner {
    background: #fff;
    border-color: var(--gray-200);
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .example-box,
[data-theme="dark"] .sigla-card,
[data-theme="dark"] .step-card,
[data-theme="dark"] .error-item,
[data-theme="dark"] .faq-item,
[data-theme="dark"] .compare-card,
[data-theme="dark"] .ingredient-list li,
[data-theme="dark"] .checklist li {
    background: var(--gray-100);
    border-color: var(--gray-200);
}

[data-theme="dark"] .example-box p,
[data-theme="dark"] .example-box li,
[data-theme="dark"] .sigla-card p,
[data-theme="dark"] .step-card p,
[data-theme="dark"] .error-item p,
[data-theme="dark"] .faq-item p,
[data-theme="dark"] .compare-card ul {
    color: var(--gray-700);
}

[data-theme="dark"] .compare-card h3,
[data-theme="dark"] .step-card h3,
[data-theme="dark"] .faq-item summary {
    color: var(--gray-900);
}

[data-theme="dark"] .sigla-card abbr {
    color: var(--primary-light);
}

[data-theme="dark"] .highlight-box {
    background: rgba(56, 189, 248, 0.1);
    border-left-color: var(--primary-light);
}

[data-theme="dark"] .highlight-box p {
    color: var(--gray-800);
}

[data-theme="dark"] .warning-box {
    background: rgba(245, 158, 11, 0.14);
    border-left-color: #fbbf24;
}

[data-theme="dark"] .warning-box p {
    color: #fde68a;
}

[data-theme="dark"] .compare-card--bad {
    background: rgba(239, 68, 68, 0.12);
    border-color: rgba(248, 113, 113, 0.35);
}

[data-theme="dark"] .compare-card--good {
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(74, 222, 128, 0.3);
}

[data-theme="dark"] .example-calc {
    background: var(--gray-50);
    border-color: var(--gray-300);
    color: var(--gray-800);
}

[data-theme="dark"] .example-calc strong {
    color: var(--primary-light);
}

[data-theme="dark"] .cost-table th {
    background: var(--gray-50);
    color: var(--gray-900);
}

[data-theme="dark"] .cost-table td {
    color: var(--gray-700);
    border-bottom-color: var(--gray-200);
}

[data-theme="dark"] .cost-table td:last-child {
    color: var(--primary-light);
}

[data-theme="dark"] .example-box-title {
    color: var(--primary-light);
}

[data-theme="dark"] .error-item h3 {
    color: #fbbf24;
}

[data-theme="dark"] .checklist li {
    color: var(--gray-800);
}

[data-theme="dark"] .checklist li::before {
    background: var(--gray-50);
    border-color: var(--primary-light);
}

[data-theme="dark"] .article-inline-cta {
    background: rgba(56, 189, 248, 0.08);
    border-color: rgba(56, 189, 248, 0.22);
}

[data-theme="dark"] .article-inline-cta p {
    color: var(--gray-900);
}

[data-theme="dark"] .article-inline-cta .blog-hero-btn--primary {
    background: var(--article-brand-light);
    color: var(--article-on-dark);
}

[data-theme="dark"] .article-cta-final {
    background: linear-gradient(165deg, #1a3d66 0%, #0d1f35 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .article-cta-final h2,
[data-theme="dark"] .article-cta-final p,
[data-theme="dark"] .article-cta-final .blog-hero-btn--ghost,
[data-theme="dark"] .article-cta-final .blog-hero-btn--primary {
    color: var(--article-on-dark);
}

/* Fórmulas: sempre texto claro sobre fundo azul, em qualquer tema */
[data-theme="dark"] .article-body .formula-box,
[data-theme="dark"] .article-body .formula-box p,
[data-theme="dark"] .article-body .formula-box-label,
[data-theme="dark"] .article-body .formula-box-formula,
[data-theme="dark"] .article-body .formula-box-note {
    color: var(--article-on-dark);
}

[data-theme="dark"] .formula-box {
    background: linear-gradient(145deg, #1e4470 0%, #142d4d 100%);
    border-color: rgba(255, 255, 255, 0.14);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .formula-box-label {
    color: var(--article-on-dark-soft);
}

[data-theme="dark"] .formula-box-note {
    color: var(--article-on-dark-muted);
}

[data-theme="dark"] .step-card-num {
    background: var(--article-brand-light);
    color: var(--article-on-dark);
}

[data-theme="dark"] .article-intro-list li::before {
    background: rgba(56, 189, 248, 0.15);
    color: var(--primary-light);
}