    /* Identidade oficial Silicium Náutica — setembro de 2026. Fontes locais. */
    @font-face { font-family: "DejaVu Sans"; src: url("../fonts/dejavu-sans-regular.woff") format("woff"); font-weight: 400; font-style: normal; font-display: swap; }
    @font-face { font-family: "DejaVu Sans"; src: url("../fonts/dejavu-sans-bold.woff") format("woff"); font-weight: 700; font-style: normal; font-display: swap; }
    :root {
      --brand-primary: #007EA8;
      --brand-support: #28B8D1;
      --brand-text: #006382;
      --navy: #071C2B;
      --navy-2: #102D40;
      --ink: #071C2B;
      --muted: #5F7380;
      --paper: #EDF7FA;
      --white: #ffffff;
      --line: #c9dce4;
      --display: "DejaVu Sans", Arial, sans-serif;
      --body: "DejaVu Sans", Arial, sans-serif;
      --container: 1180px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    section[id] { scroll-margin-top: 90px; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--white);
      font-family: var(--body);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    body.menu-open { overflow: hidden; }

    img { display: block; max-width: 100%; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button { cursor: pointer; }
    :focus-visible { outline: 3px solid var(--brand-primary); outline-offset: 4px; }
    .skip-link { position: fixed; z-index: 999; top: 8px; left: 8px; padding: 9px 14px; color: #fff; background: var(--brand-primary); transform: translateY(-150%); }
    .skip-link:focus { transform: translateY(0); }

    .container {
      width: min(calc(100% - 40px), var(--container));
      margin-inline: auto;
    }

    .header {
      position: fixed;
      inset: 0 0 auto;
      z-index: 50;
      height: 82px;
      border-bottom: 1px solid rgba(255,255,255,.09);
      background: rgba(7,28,43,.94);
      backdrop-filter: blur(16px);
    }

    .header-inner {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 28px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--white);
    }

    .brand { flex-shrink: 0; }
    .brand img { width: 220px; height: auto; object-fit: contain; }
    .brand strong {
      display: block;
      font-family: var(--display);
      font-size: 1rem;
      letter-spacing: .08em;
    }
    .brand small {
      display: block;
      margin-top: -2px;
      color: var(--brand-primary);
      font-size: .61rem;
      font-weight: 800;
      letter-spacing: .17em;
      text-transform: uppercase;
    }

    .nav {
      display: flex;
      align-items: center;
      gap: 25px;
    }

    .nav a {
      color: #dce5eb;
      font-size: .79rem;
      font-weight: 700;
    }

    .nav a:hover { color: var(--brand-support); }

    .menu-toggle { display: none; width: 44px; height: 44px; padding: 8px; border: 0; background: transparent; }
    .menu-toggle span { display: block; width: 24px; height: 2px; margin: 5px auto; background: #fff; transition: .25s; }

    .hero {
      position: relative;
      min-height: 780px;
      display: flex;
      align-items: center;
      overflow: hidden;
      color: var(--white);
      background:
        linear-gradient(102deg, rgba(4,11,17,.94) 9%, rgba(5,13,20,.78) 49%, rgba(5,12,18,.86) 100%),
        url("../img/nautica-hero.webp") center/cover no-repeat;
      background-position: center, 68% center;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 72% 24%, rgba(0,126,168,.15), transparent 25%),
        linear-gradient(180deg, transparent 58%, rgba(2,8,13,.32));
    }

    .hero::after {
      content: "";
      position: absolute;
      left: -7%;
      right: -7%;
      bottom: -82px;
      height: 150px;
      border-top: 1px solid rgba(0,126,168,.48);
      border-radius: 50%;
      transform: rotate(-2deg);
      opacity: .65;
    }

    .hero-grid {
      position: relative;
      z-index: 2;
      padding: 135px 0 84px;
      display: grid;
      grid-template-columns: 1.06fr .94fr;
      gap: 72px;
      align-items: center;
    }

    .eyebrow {
      margin: 0 0 17px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--brand-text);
      font-size: .69rem;
      font-weight: 800;
      letter-spacing: .17em;
      text-transform: uppercase;
    }

    .eyebrow::before {
      content: "";
      width: 30px;
      height: 2px;
      background: currentColor;
    }

    h1, h2, h3 { font-family: var(--display); }

    h1 {
      margin: 0;
      max-width: 720px;
      font-size: clamp(3rem, 5.7vw, 5.5rem);
      line-height: .98;
      letter-spacing: -.045em;
    }

    h1 span { color: var(--brand-support); }
    .hero .eyebrow, .process .eyebrow, .technology-gateway .eyebrow { color: var(--brand-support); }

    .lead {
      max-width: 690px;
      margin: 25px 0 0;
      color: #e0e8ed;
      font-size: 1.03rem;
    }

    .actions {
      margin-top: 32px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .btn {
      min-height: 51px;
      padding: 0 22px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 999px;
      font-size: .8rem;
      font-weight: 800;
    }

    .btn-primary {
      color: var(--white);
      background: var(--brand-primary);
      box-shadow: 0 18px 42px rgba(0,126,168,.22);
      border: 1px solid transparent;
      transition: background .2s, transform .2s, box-shadow .2s;
    }
    .btn-primary:hover { background: var(--brand-text); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(0,126,168,.2); }
    .btn-primary:active { transform: translateY(0); }

    .btn-ghost {
      color: var(--white);
      border: 1px solid rgba(255,255,255,.24);
      background: rgba(255,255,255,.04);
      backdrop-filter: blur(8px);
    }

    .hero-trust {
      margin-top: 30px;
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
    }

    .hero-trust span {
      padding: 8px 11px;
      border: 1px solid rgba(255,255,255,.14);
      border-radius: 999px;
      color: #e7eef2;
      background: rgba(255,255,255,.035);
      font-size: .7rem;
    }

    /* Card da direita: somente a marca, sem foto. */
    .brand-card {
      position: relative;
      min-height: 430px;
      display: grid;
      place-items: center;
      overflow: hidden;
      border: 1px solid rgba(255,255,255,.13);
      border-radius: 30px;
      background: linear-gradient(145deg, rgba(16,45,64,.96), rgba(7,28,43,.98));
      box-shadow: 0 36px 90px rgba(0,0,0,.36);
    }

    .brand-card::before,
    .brand-card::after {
      content: "";
      position: absolute;
      border: 1px solid rgba(0,126,168,.20);
      border-radius: 50%;
    }
    .brand-card::before { width: 290px; height: 290px; }
    .brand-card::after { width: 430px; height: 430px; }

    .brand-card > img {
      position: relative;
      z-index: 2;
      width: min(70%, 290px);
      height: auto;
      margin-bottom: 85px;
    }

    .brand-card-label {
      position: absolute;
      z-index: 3;
      left: 24px;
      right: 24px;
      bottom: 24px;
      padding: 17px 18px;
      border: 1px solid rgba(255,255,255,.08);
      border-radius: 15px;
      background: rgba(7,28,43,.86);
      backdrop-filter: blur(9px);
    }

    .brand-card-label small {
      display: block;
      color: var(--brand-support);
      font-size: .62rem;
      font-weight: 800;
      letter-spacing: .15em;
    }

    .brand-card-label strong {
      display: block;
      margin-top: 3px;
      font-family: var(--display);
      font-size: 1.06rem;
    }

    section { padding: 105px 0; }

    .section-head {
      max-width: 790px;
      margin-bottom: 48px;
    }

    .section-head h2 {
      margin: 0;
      font-size: clamp(2.2rem, 4vw, 3.75rem);
      line-height: 1.04;
      letter-spacing: -.03em;
    }

    .section-head > p:not(.eyebrow) {
      color: var(--muted);
    }

    /* Única seção de serviços */
    .services { background: var(--paper); }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 15px;
    }

    .service-card {
      min-height: 230px;
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: var(--white);
      transition: transform .2s, box-shadow .2s, border-color .2s;
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: #c8d3d9;
      box-shadow: 0 20px 48px rgba(16,35,48,.08);
    }

    .service-card b {
      color: var(--brand-text);
      font-family: var(--display);
      font-size: .66rem;
      letter-spacing: .12em;
    }

    .service-card h3 {
      margin: 27px 0 9px;
      font-size: 1.08rem;
      line-height: 1.18;
    }

    .service-card p {
      margin: 0;
      color: #5F7380;
      font-size: .82rem;
    }

    /* Contextos de uso: complementam os serviços sem repetir a lista técnica. */
    .visual-band {
      padding: 82px 0;
      background: #fff;
    }

    .visual-band .section-head {
      margin-bottom: 38px;
    }

    .visual-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .visual-card {
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: 24px;
      background: var(--navy);
      box-shadow: 0 20px 52px rgba(11,27,39,.09);
    }

    .visual-card img {
      width: 100%;
      height: 240px;
      object-fit: cover;
      object-position: center;
      transition: transform .55s ease, filter .55s ease;
    }

    .visual-card:hover img {
      transform: scale(1.035);
      filter: saturate(1.04) contrast(1.02);
    }

    .visual-caption {
      min-height: 230px;
      padding: 24px;
      color: var(--white);
      background: linear-gradient(145deg, #102D40, #071C2B);
    }

    .visual-caption > span {
      display: inline-block;
      padding: 7px 10px;
      border-radius: 999px;
      color: var(--white);
      background: var(--brand-primary);
      font-size: .64rem;
      font-weight: 800;
      letter-spacing: .12em;
      text-transform: uppercase;
    }

    .visual-caption h3 {
      margin: 16px 0 10px;
      font-size: 1.36rem;
      line-height: 1.12;
    }

    .visual-caption p {
      margin: 0;
      color: #c1ccd3;
      font-size: .85rem;
    }

    .process {
      color: var(--white);
      background: var(--navy);
    }

    .process .section-head > p:not(.eyebrow) { color: #aebbc4; }

    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 17px;
    }

    .step {
      min-height: 230px;
      padding: 27px;
      border: 1px solid rgba(255,255,255,.10);
      border-radius: 18px;
      background: rgba(255,255,255,.035);
    }

    .step i {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: var(--white);
      background: var(--brand-primary);
      font-style: normal;
      font-weight: 800;
    }

    .step h3 { margin: 26px 0 8px; }
    .step p { margin: 0; color: #aebbc4; font-size: .85rem; }

    .consultoria {
      background: #fff;
    }

    .consultoria-grid {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 75px;
      align-items: center;
    }

    .consultoria-photo {
      height: 440px;
      overflow: hidden;
      border-radius: 28px;
      box-shadow: 0 28px 70px rgba(11,27,39,.13);
    }

    .consultoria-photo img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center;
    }

    .consultoria-copy h2 {
      margin: 0;
      font-size: clamp(2.25rem,4vw,3.65rem);
      line-height: 1.04;
      letter-spacing: -.03em;
    }

    .consultoria-copy > p { color: var(--muted); }

    .checks {
      margin-top: 26px;
      display: grid;
      gap: 13px;
    }

    .checks div {
      display: flex;
      gap: 11px;
      align-items: flex-start;
      color: #4f5d67;
      font-size: .9rem;
    }

    .checks b {
      flex: 0 0 24px;
      height: 24px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: var(--brand-primary);
      border: 1px solid rgba(0,126,168,.42);
      font-size: .72rem;
    }

    .technology-gateway { padding: 0 0 90px; background: #fff; }
    .technology-gateway-inner {
      padding: 34px 38px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 38px;
      color: #fff;
      border-radius: 24px;
      background: radial-gradient(circle at 82% 20%, rgba(0,126,168,.23), transparent 28%), var(--navy);
    }
    .technology-gateway .eyebrow { margin-bottom: 10px; }
    .technology-gateway h2 { margin: 0; font-size: clamp(1.65rem, 3vw, 2.5rem); line-height: 1.08; }
    .technology-gateway p:not(.eyebrow) { max-width: 690px; margin: 12px 0 0; color: #b9c5cc; }
    .technology-gateway .btn { flex: 0 0 auto; }

    .contact {
      background: var(--paper);
    }

    .contact-grid {
      display: grid;
      grid-template-columns: .72fr 1.28fr;
      gap: 68px;
      align-items: start;
    }

    .contact h2 {
      margin: 0;
      font-size: clamp(2.15rem,4vw,3.55rem);
      line-height: 1.05;
    }

    .contact-copy > p { color: var(--muted); }

    .contact-box {
      margin-top: 26px;
      padding: 21px;
      border: 1px solid var(--line);
      border-radius: 16px;
      background: #fff;
    }

    .contact-box small { display: block; color: #5F7380; }
    .contact-box a { display: block; padding-block: 6px; color: var(--brand-text); font-weight: 700; }
    .contact-box a:hover { text-decoration: underline; }
    .contact-box strong { display: block; margin: 2px 0; }

    form {
      padding: 30px;
      border: 1px solid var(--line);
      border-radius: 22px;
      background: #fff;
      box-shadow: 0 20px 60px rgba(12,28,40,.07);
    }

    .row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 15px;
    }

    label {
      display: block;
      margin-bottom: 15px;
      color: #44515a;
      font-size: .77rem;
      font-weight: 700;
    }

    input, select, textarea {
      width: 100%;
      margin-top: 6px;
      padding: 13px 14px;
      border: 1px solid #d4dde2;
      border-radius: 10px;
      outline: none;
      background: #fff;
    }

    input:focus, select:focus, textarea:focus {
      border-color: var(--brand-primary);
      box-shadow: 0 0 0 3px rgba(0,126,168,.09);
    }

    textarea { resize: vertical; }
    .error { border-color: #c74433 !important; }
    [aria-invalid="true"] { border-color: #c74433 !important; box-shadow: 0 0 0 3px rgba(199,68,51,.1); }
    .note, .status { color: #5F7380; font-size: .72rem; }

    .whatsapp-float { position: fixed; z-index: 45; right: 22px; bottom: 22px; width: 58px; height: 58px; display: grid; place-items: center; color: #fff; border: 3px solid #fff; border-radius: 50%; background: #25d366; box-shadow: 0 14px 35px rgba(0,0,0,.27); }
    .whatsapp-float svg { display: block; width: 31px; height: 31px; fill: #fff; }

    footer {
      padding: 34px 0;
      color: #8f9aa2;
      background: #071C2B;
    }

    .footer-inner {
      display: flex;
      justify-content: space-between;
      gap: 22px;
      align-items: center;
    }

    .footer-inner a { color: #e2e7ea; }
    .footer-brand { display: grid; gap: 10px; flex-shrink: 0; }
    .footer-brand img { width: 180px; height: auto; }
    .footer-brand span { font-size: .75rem; }
    .footer-inner > span { text-align: right; font-size: .8rem; }
    .hero-grid > *, .contact-grid > *, .consultoria-grid > * { min-width: 0; }
    .hero { padding-block: 0; }
    .nav { max-height: calc(100dvh - 82px); }
    :focus-visible { outline-color: var(--brand-support); }
    input:focus-visible, select:focus-visible, textarea:focus-visible { outline-color: var(--brand-text); }

    @media (max-width: 1020px) {
      .services-grid { grid-template-columns: repeat(2,1fr); }
      .hero-grid,
      .consultoria-grid,
      .contact-grid { grid-template-columns: 1fr; }
      .process-grid { grid-template-columns: 1fr 1fr; }
      .brand-card { max-width: 620px; width: 100%; }
    }

    @media (max-width: 760px) {
      .menu-toggle { display: block; position: relative; z-index: 52; }
      .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
      .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
      .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
      .nav { position: fixed; inset: 82px 0 0; z-index: 51; padding: 30px 24px; display: flex; flex-direction: column; align-items: stretch; gap: 0; overflow-y: auto; background: #071C2B; visibility: hidden; pointer-events: none; transform: translateX(100%); transition: transform .25s, visibility 0s linear .25s; }
      .nav.open { visibility: visible; pointer-events: auto; transform: translateX(0); transition-delay: 0s; }
      .nav a { padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.1); font-size: 1rem; }
      .hero { min-height: auto; }
      .hero-grid { padding: 120px 0 72px; }
      h1 { font-size: clamp(2.8rem, 14vw, 4.2rem); }
      .services-grid,
      .process-grid,
      .visual-grid,
      .row { grid-template-columns: 1fr; }
      .visual-card img { height: 240px; }
      .visual-caption { min-height: auto; }
      .consultoria-photo { height: 330px; }
      .technology-gateway-inner { padding: 28px 24px; flex-direction: column; align-items: flex-start; }
      section { padding: 78px 0; }
    }

    @media (max-width: 520px) {
      .container { width: min(calc(100% - 28px), var(--container)); }
      .header { height: 72px; }
      .brand img { width: 196px; max-width: none; }
      .nav { max-height: calc(100dvh - 72px); }
      .nav { inset-block-start: 72px; }
      .brand strong { font-size: .92rem; }
      .brand small { font-size: .55rem; }
      .brand-card { min-height: 350px; }
      .brand-card > img { width: min(72%, 250px); }
      .brand-card-label { left: 18px; right: 18px; bottom: 18px; }
      .service-card { min-height: auto; }
      form { padding: 22px 18px; }
      .footer-inner { flex-direction: column; align-items: flex-start; }
      .footer-inner > span { text-align: left; }
    }
  
