:root {
      --primary: #0f172a;
      --secondary: #1e293b;
      --accent: #facc15;
      --accent-dark: #eab308;
      --text: #334155;
      --muted: #64748b;
      --light: #f8fafc;
      --white: #ffffff;
      --border: #e2e8f0;
      --success: #16a34a;
      --shadow: 0 18px 45px rgba(15, 23, 42, 0.12);
      --radius: 18px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: Arial, Helvetica, sans-serif;
      color: var(--text);
      background: var(--light);
      line-height: 1.6;
    }

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

    img {
      max-width: 100%;
      display: block;
    }

    .container {
      width: min(1180px, 92%);
      margin: 0 auto;
    }

    /* HEADER */
    .topbar {
      background: var(--primary);
      color: var(--white);
      font-size: 14px;
      padding: 9px 0;
    }

    .topbar .container {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      align-items: center;
    }

    .topbar strong {
      color: var(--accent);
    }

    header {
      background: var(--white);
      border-bottom: 1px solid var(--border);
      position: sticky;
      top: 0;
      z-index: 50;
    }

    .navbar {
      height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 23px;
      color: var(--primary);
    }

    .logo-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 900;
      box-shadow: 0 8px 22px rgba(250, 204, 21, 0.35);
    }

    nav {
      display: flex;
      align-items: center;
      gap: 24px;
      font-size: 15px;
      font-weight: 600;
      color: var(--secondary);
    }

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

    .nav-cta {
      padding: 11px 18px;
      background: var(--primary);
      color: var(--white);
      border-radius: 999px;
      font-weight: 700;
      transition: 0.2s;
    }

    .nav-cta:hover {
      background: var(--accent-dark);
      color: var(--primary);
    }

    /* HERO */
    .hero {
      background:
        linear-gradient( 115deg, rgba(28, 44, 168, 0.95), rgba(28, 44, 168, 0.83) ),
        url("https://images.unsplash.com/photo-1486262715619-67b85e0b08d3?auto=format&fit=crop&w=1600&q=80");
      background-size: cover;
      background-position: center;
      color: var(--white);
      padding: 96px 0 82px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 52px;
      align-items: center;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(250, 204, 21, 0.13);
      color: var(--accent);
      border: 1px solid rgba(250, 204, 21, 0.35);
      padding: 8px 14px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 22px;
    }

    .hero h1 {
      font-size: clamp(36px, 5vw, 62px);
      line-height: 1.05;
      margin-bottom: 22px;
      letter-spacing: -1.5px;
    }

    .hero h1 span {
      color: var(--accent);
    }

    .hero p {
      font-size: 19px;
      max-width: 690px;
      color: #e2e8f0;
      margin-bottom: 32px;
    }

    .hero-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 30px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      padding: 15px 24px;
      border-radius: 999px;
      font-weight: 800;
      font-size: 15px;
      cursor: pointer;
      transition: 0.2s;
      border: none;
    }

    .btn-primary {
      background: var(--accent);
      color: var(--primary);
      box-shadow: 0 14px 32px rgba(250, 204, 21, 0.28);
    }

    .btn-primary:hover {
      background: var(--accent-dark);
      transform: translateY(-2px);
    }

    .btn-outline {
      border: 1px solid rgba(255, 255, 255, 0.35);
      color: var(--white);
      background: rgba(255, 255, 255, 0.06);
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.14);
      transform: translateY(-2px);
    }

    .hero-points {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 14px;
      color: #cbd5e1;
    }

    .hero-points span {
      display: inline-flex;
      align-items: center;
      gap: 7px;
    }

    .check {
      color: var(--accent);
      font-weight: 900;
    }

    .hero-card {
      background: rgba(255, 255, 255, 0.94);
      color: var(--primary);
      border-radius: 26px;
      padding: 30px;
      box-shadow: var(--shadow);
    }

    .hero-card h3 {
      font-size: 25px;
      margin-bottom: 12px;
    }

    .hero-card p {
      color: var(--text);
      font-size: 16px;
      margin-bottom: 20px;
    }

    .search-box {
      background: var(--light);
      border: 1px solid var(--border);
      padding: 16px;
      border-radius: 16px;
      margin-bottom: 18px;
    }

    .search-box label {
      display: block;
      font-weight: 800;
      margin-bottom: 8px;
      color: var(--primary);
    }

    .search-box input {
      width: 100%;
      height: 48px;
      padding: 0 15px;
      border: 1px solid var(--border);
      border-radius: 12px;
      font-size: 15px;
      outline: none;
    }

    .search-box input:focus {
      border-color: var(--accent-dark);
    }

    .mini-list {
      list-style: none;
      display: grid;
      gap: 10px;
      color: var(--text);
      margin-top: 16px;
      font-size: 15px;
    }

    .mini-list li {
      display: flex;
      gap: 9px;
    }

    /* SECTIONS */
    section {
      padding: 76px 0;
    }

    .section-title {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 44px;
    }

    .section-title small {
      color: var(--accent-dark);
      font-weight: 900;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .section-title h2 {
      color: var(--primary);
      font-size: clamp(30px, 4vw, 44px);
      line-height: 1.15;
      margin: 10px 0 14px;
    }

    .section-title p {
      color: var(--muted);
      font-size: 17px;
    }

    .cards {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }

    .card {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 26px;
      box-shadow: 0 12px 34px rgba(15, 23, 42, 0.06);
      transition: 0.2s;
    }

    .card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow);
    }

    .icon {
      width: 52px;
      height: 52px;
      border-radius: 15px;
      background: #fef9c3;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 25px;
      margin-bottom: 18px;
    }

    .card h3 {
      color: var(--primary);
      margin-bottom: 10px;
      font-size: 19px;
    }

    .card p {
      color: var(--muted);
      font-size: 15px;
    }

    /* CATEGORIES */
    .categories {
      background: var(--white);
    }

    .category-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .category {
      position: relative;
      overflow: hidden;
      min-height: 230px;
      border-radius: 24px;
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      color: var(--white);
      box-shadow: var(--shadow);
    }

    .category::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(15,23,42,0.15), rgba(15,23,42,0.88));
      z-index: 1;
    }

    .category-content {
      position: relative;
      z-index: 2;
    }

    .category h3 {
      font-size: 25px;
      margin-bottom: 8px;
    }

    .category p {
      color: #e2e8f0;
      margin-bottom: 18px;
    }

    .category a {
      display: inline-flex;
      color: var(--accent);
      font-weight: 800;
    }

    .cat-1 {
      background: url("../img/amortecedor.jpg") center/cover;
    }

    .cat-2 {
      background: url("../img/freio.png") center/cover;
    }

    .cat-3 {
      background: url("../img/motor.png") center/cover;
    }

    .cat-4 {
      background: url("../img/eletronico.png") center/cover;
    }

    .cat-5 {
      background: url("../img/agro.png") center/cover;
    }

    .cat-6 {
      background: url("../img/construcao.png") center/cover;
    }

    /* HOW IT WORKS */
    .steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 18px;
    }

    .step {
      background: var(--white);
      border-radius: var(--radius);
      border: 1px solid var(--border);
      padding: 24px;
      position: relative;
    }

    .step-number {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary);
      color: var(--accent);
      font-weight: 900;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
    }

    .step h3 {
      color: var(--primary);
      font-size: 18px;
      margin-bottom: 8px;
    }

    .step p {
      color: var(--muted);
      font-size: 15px;
    }

    /* COMPATIBILITY */
    .compatibility {
      background: var(--primary);
      color: var(--white);
    }

    .compat-grid {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 48px;
      align-items: center;
    }

    .compatibility .section-title {
      text-align: left;
      margin: 0;
    }

    .compatibility .section-title h2 {
      color: var(--white);
    }

    .compatibility .section-title p {
      color: #cbd5e1;
    }

    .compat-list {
      display: grid;
      gap: 14px;
    }

    .compat-item {
      background: rgba(255,255,255,0.07);
      border: 1px solid rgba(255,255,255,0.13);
      padding: 18px;
      border-radius: 16px;
      display: flex;
      align-items: flex-start;
      gap: 12px;
    }

    .compat-item strong {
      color: var(--accent);
      display: block;
      margin-bottom: 3px;
    }

    .compat-item p {
      color: #e2e8f0;
      font-size: 15px;
    }

    /* ABOUT */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 46px;
      align-items: center;
    }

    .about-image {
      min-height: 430px;
      border-radius: 28px;
      background:
        linear-gradient(180deg, rgba(15,23,42,0.05), rgba(15,23,42,0.3)),
        url("https://images.unsplash.com/photo-1487754180451-c456f719a1fc?auto=format&fit=crop&w=1200&q=80");
      background-size: cover;
      background-position: center;
      box-shadow: var(--shadow);
    }

    .about-content small {
      color: var(--accent-dark);
      text-transform: uppercase;
      font-weight: 900;
      letter-spacing: 1px;
    }

    .about-content h2 {
      color: var(--primary);
      font-size: clamp(30px, 4vw, 44px);
      line-height: 1.15;
      margin: 12px 0 18px;
    }

    .about-content p {
      color: var(--muted);
      margin-bottom: 18px;
      font-size: 17px;
    }

    .stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
      margin-top: 28px;
    }

    .stat {
      background: var(--white);
      border: 1px solid var(--border);
      padding: 18px;
      border-radius: 16px;
    }

    .stat strong {
      display: block;
      color: var(--primary);
      font-size: 26px;
      line-height: 1;
      margin-bottom: 7px;
    }

    .stat span {
      color: var(--muted);
      font-size: 14px;
    }

    /* FAQ */
    .faq {
      background: var(--white);
    }

    .faq-grid {
      max-width: 900px;
      margin: 0 auto;
      display: grid;
      gap: 14px;
    }

    details {
      background: var(--light);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 20px 22px;
    }

    summary {
      cursor: pointer;
      font-weight: 800;
      color: var(--primary);
      font-size: 17px;
    }

    details p {
      margin-top: 12px;
      color: var(--muted);
    }

    /* CTA */
    .cta {
      background:
        linear-gradient(115deg, rgba(250,204,21,0.93), rgba(234,179,8,0.95)),
        url("https://images.unsplash.com/photo-1599256872237-5dcc0fbe9668?auto=format&fit=crop&w=1600&q=80");
      background-size: cover;
      background-position: center;
      color: var(--primary);
      text-align: center;
      padding: 72px 0;
    }

    .cta h2 {
      font-size: clamp(32px, 4vw, 48px);
      line-height: 1.12;
      margin-bottom: 14px;
    }

    .cta p {
      max-width: 720px;
      margin: 0 auto 28px;
      font-size: 18px;
      color: #1e293b;
    }

    .cta-buttons {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 14px;
    }

    .btn-dark {
      background: var(--primary);
      color: var(--white);
    }

    .btn-dark:hover {
      background: var(--secondary);
      transform: translateY(-2px);
    }

    .btn-white {
      background: var(--white);
      color: var(--primary);
    }

    .btn-white:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow);
    }

    /* FOOTER */
    footer {
      background: #020617;
      color: #cbd5e1;
      padding: 48px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr 0.8fr 0.8fr;
      gap: 32px;
      margin-bottom: 34px;
    }

    footer h3 {
      color: var(--white);
      margin-bottom: 14px;
      font-size: 18px;
    }

    footer p,
    footer a {
      color: #94a3b8;
      font-size: 15px;
    }

    footer a:hover {
      color: var(--accent);
    }

    .footer-links {
      display: grid;
      gap: 9px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      gap: 14px;
      flex-wrap: wrap;
      font-size: 14px;
      color: #64748b;
    }

    .floating-whatsapp {
      position: fixed;
      right: 20px;
      bottom: 20px;
      width: 58px;
      height: 58px;
      background: #22c55e;
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 29px;
      box-shadow: 0 14px 30px rgba(34,197,94,0.35);
      z-index: 60;
      transition: 0.2s;
    }

    .floating-whatsapp:hover {
      transform: translateY(-4px) scale(1.03);
    }

    /* RESPONSIVE */
    @media (max-width: 980px) {
      nav {
        display: none;
      }

      .hero-grid,
      .compat-grid,
      .about-grid {
        grid-template-columns: 1fr;
      }

      .cards {
        grid-template-columns: repeat(2, 1fr);
      }

      .category-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .steps {
        grid-template-columns: repeat(2, 1fr);
      }

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

    @media (max-width: 640px) {
      .topbar .container {
        justify-content: center;
        text-align: center;
      }

      .hero {
        padding: 70px 0 56px;
      }

      .hero-buttons,
      .cta-buttons {
        flex-direction: column;
      }

      .btn {
        width: 100%;
      }

      .cards,
      .category-grid,
      .steps,
      .stats,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .category {
        min-height: 210px;
      }

      section {
        padding: 58px 0;
      }

      .navbar {
        height: 68px;
      }

      .logo {
        font-size: 20px;
      }

      .logo-icon {
        width: 40px;
        height: 40px;
      }
    }