:root {
      --bg: #f4f8fa;
      --bg2: #eaf3f7;
      --text: #115260;
      --text-mid: #2e7a8f;
      --muted: #6a9aaa;
      --accent: #16e0c2;
      --accent2: #019fec;
      --border: #cde4ec;
      --white: #ffffff;
      --font: 'Plus Jakarta Sans', sans-serif;

      /* nav (dark, igual à landing) */
      --nav-bg: rgba(7, 26, 34, 0.92);
      --nav-text: #e7f6ff;
      --nav-muted: #7aabbd;
      --nav-border: #154055;
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: var(--font);
      font-weight: 400;
      line-height: 1.75;
      overflow-x: hidden;
    }

    /* ─── NAV (igual à landing) ─── */
    nav {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 5vw;
      background: var(--nav-bg);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--nav-border);
    }

    .nav-logo img {
      height: 44px;
      display: block;
    }

    .nav-links {
      display: flex;
      gap: 32px;
      list-style: none;
    }

    .nav-links a {
      font-size: 0.8rem;
      font-weight: 500;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--nav-muted);
      text-decoration: none;
      transition: color 0.2s;
    }

    .nav-links a:hover {
      color: var(--accent);
    }

    .nav-cta {
      background: var(--accent);
      color: #041218 !important;
      padding: 10px 22px;
      border-radius: 6px;
      font-weight: 700 !important;
      font-size: 0.82rem !important;
      letter-spacing: 0.04em;
      transition: opacity 0.2s !important;
      text-decoration: none;
    }

    .nav-cta:hover {
      opacity: 0.85;
    }

    /* ─── HERO DO ARTIGO ─── */
    .article-hero {
      padding: 120px 5vw 56px;
      background: var(--white);
      border-bottom: 1px solid var(--border);
    }

    .article-hero-inner {
      max-width: 1100px;
      margin: 0 auto;
    }

    .article-meta {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 20px;
      font-size: 0.8rem;
      font-weight: 500;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--muted);
    }

    .article-meta .tag {
      background: rgba(22, 224, 194, 0.12);
      color: #0a7a6e;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 0.72rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .article-hero h1 {
      font-family: var(--font);
      font-weight: 800;
      font-size: clamp(2rem, 5vw, 3.4rem);
      line-height: 1.1;
      letter-spacing: -0.03em;
      color: var(--text);
      max-width: 820px;
      margin-bottom: 24px;
    }

    .article-hero .resumo {
      font-size: 1.15rem;
      font-weight: 400;
      font-style: italic;
      color: var(--text-mid);
      max-width: 780px;
      line-height: 1.8;
      padding-bottom: 0;
    }

    /* ─── LAYOUT PRINCIPAL ─── */
    .article-layout {
      max-width: 1100px;
      margin: 0 auto;
      padding: 56px 5vw 80px;
      display: grid;
      grid-template-columns: 1fr 300px;
      gap: 64px;
      align-items: start;
    }

    /* ─── CONTEÚDO DO ARTIGO ─── */
    .article-body h2 {
      font-family: var(--font);
      font-weight: 700;
      font-size: clamp(1.3rem, 2.5vw, 1.75rem);
      line-height: 1.25;
      letter-spacing: -0.02em;
      color: var(--text);
      margin-top: 48px;
      margin-bottom: 16px;
    }

    .article-body h2:first-child {
      margin-top: 0;
    }

    .article-body p {
      font-size: 1.05rem;
      color: var(--text);
      line-height: 1.85;
      margin-bottom: 22px;
      font-weight: 400;
    }

    /* imagens centralizadas, sem corte nem deformação */
    .article-body img {
      display: block;
      margin: 36px auto;
      max-width: 100%;
      height: auto;
      object-fit: contain;
      border-radius: 8px;
      box-shadow: 0 4px 24px rgba(17, 82, 96, 0.10);
    }

    .article-body .img-caption {
      display: block;
      text-align: center;
      font-size: 0.82rem;
      color: var(--muted);
      margin-top: -24px;
      margin-bottom: 32px;
      font-style: italic;
    }

    /* ─── SIDEBAR ─── */
    .article-sidebar {
      position: sticky;
      top: 88px;
    }

    .sidebar-author {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 28px 24px;
      margin-bottom: 24px;
    }

    .sidebar-author .author-label {
      font-size: 0.72rem;
      font-weight: 700;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--muted);
      margin-bottom: 16px;
    }

    .author-photo {
      width: 120px;
      height: 120px;
      border-radius: 50%;
      object-fit: cover;
      display: block;
      margin: 0 auto 16px;
      border: 0px solid var(--border);
      /* PLACEHOLDER: troque src pela sua foto */
      background: var(--bg2);
    }

    /* placeholder caso não tenha foto ainda */
    .author-photo-placeholder {
      width: 80px;
      height: 80px;
      border-radius: 50%;
      background: linear-gradient(135deg, rgba(22, 224, 194, 0.2), rgba(1, 159, 236, 0.2));
      border: 3px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      font-size: 1.8rem;
    }

    .author-name {
      font-family: var(--font);
      font-weight: 700;
      font-size: 1rem;
      color: var(--text);
      text-align: center;
      margin-bottom: 8px;
    }

    .author-role {
      font-size: 0.82rem;
      color: var(--muted);
      text-align: center;
      margin-bottom: 14px;
      font-style: italic;
    }

    .author-bio {
      font-size: 0.88rem;
      color: var(--text-mid);
      line-height: 1.7;
      text-align: left;
      border-top: 1px solid var(--border);
      padding-top: 14px;
    }

    .sidebar-contact {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 24px;
    }

    .sidebar-contact h4 {
      font-family: var(--font);
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text);
      margin-bottom: 10px;
    }

    .sidebar-contact p {
      font-size: 0.86rem;
      color: var(--muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .btn-sidebar {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--accent);
      color: #041218;
      font-family: var(--font);
      font-weight: 700;
      font-size: 0.85rem;
      padding: 12px 18px;
      border-radius: 6px;
      text-decoration: none;
      transition: opacity 0.2s;
    }

    .btn-sidebar:hover {
      opacity: 0.85;
    }

    /* ─── ARTIGOS RELACIONADOS ─── */
    .related-section {
      background: var(--white);
      border-top: 1px solid var(--border);
      padding: 64px 5vw 80px;
    }

    .related-inner {
      max-width: 1100px;
      margin: 0 auto;
    }

    .related-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 36px;
    }

    .related-header h3 {
      font-family: var(--font);
      font-weight: 800;
      font-size: 1.4rem;
      letter-spacing: -0.02em;
      color: var(--text);
    }

    .related-header::before {
      content: '';
      width: 28px;
      height: 3px;
      background: var(--accent);
      border-radius: 2px;
      flex-shrink: 0;
    }

    .related-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .related-card {
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: 10px;
      overflow: hidden;
      text-decoration: none;
      color: inherit;
      transition: transform 0.2s, box-shadow 0.2s;
      display: flex;
      flex-direction: column;
    }

    .related-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 32px rgba(17, 82, 96, 0.12);
    }

    .related-card-img {
      width: 100%;
      height: 160px;
      object-fit: cover;
      background: var(--bg2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 2rem;
    }

    .related-card-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .related-card-tag {
      font-size: 0.68rem;
      font-weight: 700;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: #0a7a6e;
      margin-bottom: 8px;
    }

    .related-card h4 {
      font-family: var(--font);
      font-weight: 700;
      font-size: 1rem;
      line-height: 1.35;
      color: var(--text);
      margin-bottom: 8px;
    }

    .related-card p {
      font-size: 0.84rem;
      color: var(--muted);
      line-height: 1.6;
      flex: 1;
    }

    .related-card-date {
      font-size: 0.75rem;
      color: var(--muted);
      margin-top: 14px;
      padding-top: 12px;
      border-top: 1px solid var(--border);
    }

    /* ─── FOOTER SIMPLES ─── */
    .article-footer {
      background: #0a2230;
      color: #7aabbd;
      text-align: center;
      padding: 28px 5vw;
      font-size: 0.82rem;
      border-top: 1px solid #154055;
    }

    .article-footer a {
      color: var(--accent);
      text-decoration: none;
    }

    /* ─── RESPONSIVE ─── */
    @media (max-width: 860px) {
      .nav-links {
        display: none;
      }

      .article-layout {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 40px 5vw 60px;
      }

      .article-sidebar {
        position: static;
      }

      .related-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 560px) {
      .article-hero {
        padding: 100px 5vw 40px;
      }

      .related-grid {
        grid-template-columns: 1fr;
      }
    }