:root {
      --navy-900: #0f1c3f;
      --navy-800: #14244d;
      --navy-700: #1b2f5e;
      --navy-600: #24396f;
      --amber: #e8961e;
      --amber-light: #f2a838;
      --green: #25b463;
      --green-hover: #1fa257;
      --text-light: #cdd6e8;
      --text-muted: #8a97b5;
      --white: #ffffff;
    }

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

    html { scroll-behavior: smooth; }
    section[id] { scroll-margin-top: 84px; }

    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      background: var(--navy-900);
      color: var(--white);
      line-height: 1.6;
    }

    a { text-decoration: none; color: inherit; }

    .container {
      max-width: 1400px;
      margin: 0 auto;
      padding: 0 40px;
    }

    /* ---------- HEADER ---------- */
    header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(15, 28, 63, 0.92);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 90px;
    }

    .logo { line-height: 1.1; }
    .logo .name {
      font-size: 26px;
      font-weight: 800;
      letter-spacing: -0.5px;
    }
    .logo .sub {
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 3px;
      color: var(--text-muted);
    }

    .nav-links {
      display: flex;
      gap: 34px;
      list-style: none;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-light);
      transition: color 0.2s;
    }
    .nav-links a:hover { color: var(--white); }

    .nav-right {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-tag {
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 2px;
      color: var(--text-muted);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      padding: 13px 22px;
      border-radius: 8px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      border: none;
      transition: all 0.2s;
    }
    .btn-whatsapp {
      background: var(--green);
      color: var(--white);
    }
    .btn-whatsapp:hover { background: var(--green-hover); }
    .wa-icon {
      width: 18px;
      height: 18px;
      flex-shrink: 0;
      vertical-align: middle;
    }
    .btn-outline {
      background: transparent;
      color: var(--white);
      border: 1px solid rgba(255, 255, 255, 0.25);
    }
    .btn-outline:hover { border-color: rgba(255, 255, 255, 0.6); }

    /* ---------- HERO ---------- */
    .hero {
      position: relative;
      padding: 120px 0 0;
      background:
        linear-gradient(rgba(15, 28, 63, 0.4), rgba(15, 28, 63, 0.4)),
        repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255,255,255,0.03) 39px, rgba(255,255,255,0.03) 40px),
        repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255,255,255,0.03) 39px, rgba(255,255,255,0.03) 40px),
        var(--navy-800);
    }

    .eyebrow {
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 2px;
      color: var(--amber);
      margin-bottom: 26px;
    }

    .hero h1 {
      font-size: 58px;
      font-weight: 800;
      line-height: 1.08;
      letter-spacing: -1.5px;
      max-width: 720px;
      margin-bottom: 30px;
    }
    .hero h1 .highlight { color: var(--amber); }

    .hero p {
      font-size: 18px;
      color: var(--text-light);
      max-width: 580px;
      margin-bottom: 40px;
    }

    .hero-buttons {
      display: flex;
      gap: 16px;
      padding-bottom: 90px;
    }

    /* ---------- STATS BAR ---------- */
    .stats {
      background: rgba(255, 255, 255, 0.05);
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
    }
    .stat {
      text-align: center;
      padding: 40px 20px;
      border-right: 1px solid rgba(255, 255, 255, 0.08);
    }
    .stat:last-child { border-right: none; }
    .stat .num {
      font-size: 34px;
      font-weight: 800;
      color: var(--white);
    }
    .stat .label {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* ---------- SECTIONS ---------- */
    section.block { padding: 100px 0; }
    section.block:nth-child(even) { background: var(--navy-800); }

    /* Faixa de clientes (logos) */
    .clients-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
    }
    .client-logo {
      background: var(--white);
      border-radius: 12px;
      height: 110px;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 20px;
      transition: transform 0.2s;
    }
    .client-logo:hover { transform: translateY(-4px); }
    .client-logo-dark { background: #242525; }
    .client-logo img {
      max-width: 100%;
      max-height: 100%;
      object-fit: contain;
    }

    /* Filtros do portfólio */
    .portfolio-filters {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 32px;
    }
    .portfolio-filters .chip {
      background: var(--navy-700);
      border: 1px solid rgba(255,255,255,0.12);
      color: var(--text-light);
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.2s;
    }
    .portfolio-filters .chip:hover,
    .portfolio-filters .chip.active {
      background: var(--amber);
      border-color: var(--amber);
      color: var(--navy-900);
    }

    /* Grade de projetos (portfólio) */
    .portfolio-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .project {
      position: relative;
      height: 260px;
      border-radius: 12px;
      overflow: hidden;
      background: var(--navy-700);
      cursor: pointer;
    }
    .project img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s;
    }
    .project:hover img { transform: scale(1.06); }
    .project .overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(15,28,63,0.92) 0%, rgba(15,28,63,0.35) 55%, rgba(15,28,63,0.15) 100%);
    }
    .project .project-info {
      position: absolute;
      left: 22px;
      bottom: 22px;
      right: 22px;
      z-index: 2;
    }
    .project .project-cat {
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 1.5px;
      color: var(--amber);
      margin-bottom: 6px;
    }
    .project .project-name {
      font-size: 20px;
      font-weight: 700;
      color: var(--white);
    }
    .project .project-diag {
      font-size: 14px;
      color: var(--text-light);
      margin-top: 8px;
      max-height: 0;
      opacity: 0;
      overflow: hidden;
      transition: all 0.3s;
    }
    .project:hover .project-diag {
      max-height: 100px;
      opacity: 1;
    }
    /* placeholder de foto enquanto não há imagem */
    .project .photo-placeholder {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      color: rgba(255,255,255,0.25);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 1px;
    }

    @media (max-width: 700px) {
      .portfolio-grid { grid-template-columns: 1fr; }
    }

    /* Ensaios / metodologia */
    .ensaios-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 14px;
      margin-top: 8px;
    }
    .ensaio {
      display: flex;
      align-items: center;
      gap: 12px;
      background: var(--navy-700);
      border: 1px solid rgba(255,255,255,0.07);
      border-radius: 10px;
      padding: 16px 18px;
      transition: border-color 0.2s;
    }
    .ensaio:hover { border-color: rgba(232,150,30,0.45); }
    .ensaio .dot {
      width: 8px; height: 8px; border-radius: 50%;
      background: var(--amber); flex-shrink: 0;
    }
    .ensaio .ensaio-name { font-size: 15px; font-weight: 600; color: var(--white); }
    .ensaio .ensaio-desc { font-size: 12.5px; color: var(--text-muted); }
    .tech-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 40px;
    }
    .tech-tags .tag {
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.1);
      color: var(--text-light);
      padding: 7px 14px;
      border-radius: 6px;
      font-size: 13px;
      font-weight: 500;
    }

    /* FAQ */
    .faq-list { max-width: 820px; }
    .faq-item {
      border-bottom: 1px solid rgba(255,255,255,0.1);
      padding: 4px 0;
    }
    .faq-item summary {
      cursor: pointer;
      list-style: none;
      padding: 22px 40px 22px 0;
      font-size: 18px;
      font-weight: 600;
      color: var(--white);
      position: relative;
      transition: color 0.2s;
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after {
      content: "+";
      position: absolute;
      right: 6px;
      top: 50%;
      transform: translateY(-50%);
      font-size: 26px;
      font-weight: 400;
      color: var(--amber);
      transition: transform 0.2s;
    }
    .faq-item[open] summary::after { content: "\2212"; }
    .faq-item summary:hover { color: var(--amber); }
    .faq-answer {
      padding: 0 40px 24px 0;
      font-size: 16px;
      color: var(--text-light);
      line-height: 1.7;
    }

    .section-head { max-width: 700px; margin-bottom: 56px; }
    .section-head .eyebrow { margin-bottom: 16px; }
    .section-head h2 {
      font-size: 40px;
      font-weight: 800;
      letter-spacing: -1px;
      line-height: 1.15;
      margin-bottom: 18px;
    }
    .section-head p { font-size: 17px; color: var(--text-light); }

    .cards {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }
    .card {
      background: var(--navy-700);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: 12px;
      padding: 34px;
      transition: transform 0.2s, border-color 0.2s;
    }
    .card:hover {
      transform: translateY(-4px);
      border-color: rgba(232, 150, 30, 0.4);
    }
    .card .icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: rgba(232, 150, 30, 0.15);
      color: var(--amber);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 20px;
    }
    .card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
    .card p { font-size: 15px; color: var(--text-light); }

    /* method steps */
    .steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .step {
      border-top: 3px solid var(--amber);
      padding-top: 22px;
    }
    .step .step-num {
      font-size: 14px;
      font-weight: 700;
      color: var(--amber);
      letter-spacing: 2px;
    }
    .step h3 { font-size: 19px; margin: 10px 0 8px; }
    .step p { font-size: 14px; color: var(--text-light); }

    /* ---------- CTA / CONTATO ---------- */
    .cta {
      background: linear-gradient(135deg, var(--navy-700), var(--navy-600));
      text-align: center;
      padding: 90px 0;
    }
    .cta h2 {
      font-size: 42px;
      font-weight: 800;
      letter-spacing: -1px;
      margin-bottom: 18px;
    }
    .cta p {
      font-size: 18px;
      color: var(--text-light);
      max-width: 600px;
      margin: 0 auto 36px;
    }
    .cta .hero-buttons { justify-content: center; padding-bottom: 0; }

    /* ---------- FOOTER ---------- */
    footer {
      background: var(--navy-900);
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 50px 0;
    }
    .footer-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }
    .footer-inner .sub { color: var(--text-muted); font-size: 14px; }

    /* ---------- RESPONSIVE ---------- */
    @media (max-width: 900px) {
      .nav-tag { display: none; }
      .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--navy-900);
        flex-direction: column;
        gap: 0;
        padding: 8px 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
        max-height: calc(100vh - 72px);
        overflow-y: auto;
      }
      .nav-links.open { transform: translateY(0); }
      .nav-links li { width: 100%; }
      .nav-links a {
        display: block;
        padding: 15px 24px;
        border-bottom: 1px solid rgba(255,255,255,0.05);
        font-size: 16px;
      }
      .menu-toggle { display: flex; }
      .nav { height: 72px; }
      .nav-right .btn-whatsapp { display: none; }

      .hero { padding: 60px 0 0; }
      .hero h1 { font-size: 32px; letter-spacing: -0.5px; }
      .hero p { font-size: 16px; }
      .eyebrow { font-size: 12px; letter-spacing: 1.5px; }
      .hero-buttons { flex-direction: column; }
      .hero-buttons .btn { width: 100%; justify-content: center; }

      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .stat:nth-child(2) { border-right: none; }
      .stat { padding: 26px 12px; }
      .stat .num { font-size: 26px; }

      .steps {
        display: flex;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        gap: 16px;
        padding: 4px 22px 18px;
        margin: 0 -22px;
        scrollbar-width: none;
      }
      .steps::-webkit-scrollbar { display: none; }
      .steps .step {
        flex: 0 0 82%;
        max-width: 320px;
        scroll-snap-align: center;
      }
      .container { padding: 0 22px; }

      /* Cards em scroll horizontal (deslizar para o lado) no mobile */
      .cards {
        display: flex;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        gap: 16px;
        padding: 4px 22px 18px;
        margin: 0 -22px;
        scrollbar-width: none;
      }
      .cards::-webkit-scrollbar { display: none; }
      .cards .card {
        flex: 0 0 82%;
        max-width: 320px;
        scroll-snap-align: center;
      }

      section.block { padding: 60px 0; }
      .section-head { margin-bottom: 36px; }
      .section-head h2 { font-size: 28px; }
      .section-head p { font-size: 16px; }

      .cta { padding: 60px 0; }
      .cta h2 { font-size: 30px; }
      .cta .hero-buttons .btn { width: auto; }

      .faq-item summary { font-size: 16px; padding-right: 32px; }
    }

    @media (max-width: 700px) {
      .portfolio-grid { grid-template-columns: 1fr; }
    }

    /* Botão flutuante de WhatsApp (mobile) */
    .whatsapp-float {
      display: none;
      position: fixed;
      bottom: 20px;
      right: 20px;
      width: 56px;
      height: 56px;
      background: var(--green);
      border-radius: 50%;
      box-shadow: 0 4px 16px rgba(0,0,0,0.3);
      z-index: 200;
      align-items: center;
      justify-content: center;
    }
    .whatsapp-float svg { width: 30px; height: 30px; color: #fff; }
    @media (max-width: 900px) {
      .whatsapp-float { display: flex; }
    }

    /* Menu hamburguer */
    .menu-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 40px;
      height: 40px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 0;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--white);
      transition: all 0.3s;
    }
    .menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-toggle.open span:nth-child(2) { opacity: 0; }
    .menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }