* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    }

    body {
      background-color: #f4fbf9;
      color: #1e2f2d;
      overflow-x: hidden;
      scroll-behavior: smooth;
    }

    :root {
      --verde-sol: #2ecc71;
      --verde-profundo: #123048;
      --dourado: #fbbf24;
      --areia: #fef9e7;
      --sombra-fina: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
      --transicao: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    /* header flutuante */
    header {
      position: fixed;
      top: 20px;
      left: 5%;
      right: 5%;
      width: 90%;
      background: rgba(255, 255, 255, 0.7);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-radius: 60px;
      padding: 0.8rem 2rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      z-index: 999;
      box-shadow: 0 10px 30px -10px rgba(0, 80, 50, 0.2);
      border: 1px solid rgba(255, 255, 255, 0.5);
      animation: deslizarTopo 0.8s ease-out;
    }

    @keyframes deslizarTopo {
      0% { opacity: 0; transform: translateY(-30px); }
      100% { opacity: 1; transform: translateY(0); }
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--verde-profundo);
    }

    .logo i {
      font-size: 2.2rem;
      color: var(--dourado);
      filter: drop-shadow(0 4px 6px rgba(251, 191, 36, 0.4));
    }

    .nav-menu {
      display: flex;
      gap: 0.8rem;
      list-style: none;
    }

    .nav-menu li a {
      text-decoration: none;
      padding: 0.6rem 1.2rem;
      border-radius: 40px;
      font-weight: 500;
      color: #1e3a3a;
      transition: var(--transicao);
      background: transparent;
      font-size: 0.95rem;
      letter-spacing: 0.3px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .nav-menu li a i {
      font-size: 1rem;
      opacity: 0.7;
    }

    .nav-menu li a:hover {
      background: var(--verde-sol);
      color: white;
      box-shadow: 0 12px 20px -14px var(--verde-sol);
    }

    .menu-toggle {
      display: none;
      font-size: 2rem;
      background: none;
      border: none;
      color: var(--verde-profundo);
      cursor: pointer;
    }

    main {
      padding-top: 100px;
    }

    section {
      padding: 5rem 8%;
      opacity: 0;
      transform: translateY(30px);
      animation: aparecer 0.8s forwards;
    }

    @keyframes aparecer {
      to { opacity: 1; transform: translateY(0); }
    }

    /* ===== HOME COM SLIDER ===== */
    #home {
      background: linear-gradient(145deg, #d5f5e9 0%, #ffffff 70%);
      border-radius: 0 0 40px 40px;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 3rem;
      box-shadow: var(--sombra-fina);
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      flex: 1 1 350px;
      z-index: 5;
    }

    .hero-content h1 {
      font-size: 3.2rem;
      line-height: 1.2;
      color: #123048;
      font-weight: 700;
      margin-bottom: 1rem;
    }

    .hero-content h1 span {
      color: var(--dourado);
      border-bottom: 4px solid var(--verde-sol);
      display: inline-block;
    }

    .hero-content p {
      font-size: 1.2rem;
      margin: 1.5rem 0;
      color: #2b4d42;
    }

    .btn-solar {
      background: var(--verde-profundo);
      color: white;
      border: none;
      padding: 1rem 2.5rem;
      border-radius: 50px;
      font-size: 1.1rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 12px;
      box-shadow: 0 20px 30px -10px #12304880;
      cursor: pointer;
      transition: var(--transicao);
      text-decoration: none;
    }

    .btn-solar:hover {
      background: #0f422b;
      transform: scale(1.05) translateY(-5px);
      box-shadow: 0 30px 40px -12px #0b422b;
    }

    /* slider images */
    .hero-slider {
      flex: 1 1 300px;
      position: relative;
      height: 320px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .slide-img {
      position: absolute;
      width: 100%;
      max-width: 400px;
      border-radius: 40px;
      box-shadow: 0 30px 40px -20px rgba(0, 0, 0, 0.4);
      opacity: 0;
      transition: opacity 1.5s ease-in-out;
      object-fit: cover;
      aspect-ratio: 4/3;
      border: 4px solid white;
    }

    .slide-img.active {
      opacity: 1;
      z-index: 2;
    }

    /* indicadores do slide */
    .slide-indicators {
      position: absolute;
      bottom: -30px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      gap: 12px;
      z-index: 10;
    }

    .dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: rgba(255,255,255,0.7);
      border: 2px solid var(--verde-profundo);
      cursor: pointer;
      transition: 0.3s;
    }

    .dot.active {
      background: var(--verde-sol);
      transform: scale(1.3);
    }

    @media (max-width: 900px) {
      .hero-slider {
        height: 250px;
      }
    }

    .titulo-secao {
      font-size: 2.5rem;
      font-weight: 600;
      margin-bottom: 3rem;
      position: relative;
      display: inline-block;
    }
    .titulo-secao:after {
      content: '';
      position: absolute;
      bottom: -10px;
      left: 0;
      width: 70px;
      height: 5px;
      background: var(--dourado);
      border-radius: 10px;
    }

    /* PLANO STEPS */
    .plano-steps {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      align-items: stretch;
      gap: 0.5rem;
      margin: 3rem 0 2rem;
    }

    .step-card {
      flex: 1 1 180px;
      min-width: 160px;
      background: white;
      border-radius: 40px;
      padding: 2rem 1.2rem;
      text-align: center;
      box-shadow: var(--sombra-fina);
      transition: var(--transicao);
      border: 1px solid rgba(46, 204, 113, 0.2);
    }

    .step-card:hover {
      transform: translateY(-8px);
      border-color: var(--verde-sol);
      box-shadow: 0 25px 40px -12px #2ecc71;
    }

    .step-card i {
      font-size: 3rem;
      background: #e2f7e9;
      padding: 20px;
      border-radius: 60px;
      color: var(--verde-profundo);
      margin-bottom: 1.2rem;
      display: inline-block;
    }

    .step-card h4 {
      font-size: 1.3rem;
      font-weight: 700;
      color: #0f382b;
      margin-bottom: 0.8rem;
    }

    .step-card p {
      font-size: 0.95rem;
      line-height: 1.5;
      color: #2c5544;
    }

    .step-arrow {
      font-size: 2.5rem;
      color: var(--dourado);
      display: flex;
      align-items: center;
      justify-content: center;
      width: auto;
      padding: 0 0.2rem;
    }

    @media (min-width: 1100px) {
      .plano-steps {
        flex-wrap: nowrap;
      }
    }

    @media (max-width: 900px) {
      .plano-steps {
        flex-direction: column;
        align-items: center;
      }
      .step-arrow {
        transform: rotate(90deg);
        margin: 0.2rem 0;
      }
      .step-card {
        width: 80%;
        max-width: 380px;
      }
    }

    /* BENEFÍCIOS */
    .benefits-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 2rem;
    }

    .card-beneficio {
      background: white;
      padding: 2.5rem 1.8rem;
      border-radius: 40px;
      box-shadow: var(--sombra-fina);
      transition: var(--transicao);
      text-align: center;
    }

    .card-beneficio:hover {
      transform: translateY(-10px);
      border-color: var(--verde-sol);
    }

    /* FAQ */
    .faq-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.5rem;
    }

    .faq-item {
      background: rgba(255,255,255,0.7);
      backdrop-filter: blur(10px);
      border-radius: 30px;
      padding: 1.8rem;
      border-left: 8px solid var(--verde-sol);
      box-shadow: 0 10px 25px -12px #123048;
    }

    /* ===== CALCULADORA DINÂMICA (IMPOSTOS COMO VALORES FIXOS) ===== */
    .calculadora-card {
      background: white;
      border-radius: 50px;
      padding: 2.5rem;
      box-shadow: var(--sombra-fina);
      max-width: 850px;
      margin: 0 auto;
    }

    .campos-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 1.5rem;
      margin: 2rem 0;
    }

    .campo-group {
      flex: 1 1 180px;
      min-width: 160px;
    }

    .campo-group label {
      display: block;
      font-weight: 600;
      color: #0f382b;
      margin-bottom: 0.5rem;
    }

    .campo-group label i {
      color: var(--verde-sol);
      margin-right: 6px;
    }

    .campo-group input {
      width: 100%;
      padding: 0.8rem 1rem;
      border: 2px solid #cbf5de;
      border-radius: 30px;
      font-size: 1rem;
      transition: var(--transicao);
    }

    .campo-group input:focus {
      border-color: var(--verde-profundo);
      box-shadow: 0 0 0 4px rgba(46,204,113,0.2);
      outline: none;
    }

    .consumo-destaque {
      background: var(--areia);
      border-radius: 40px;
      padding: 1.5rem;
      margin: 2rem 0 1.5rem;
    }

    .consumo-slider-container {
      margin: 1rem 0 1.5rem;
    }

    .consumo-slider-label {
      display: flex;
      justify-content: space-between;
      font-weight: 600;
      color: #0f382b;
      margin-bottom: 0.5rem;
    }

    input[type=range] {
      -webkit-appearance: none;
      width: 100%;
      height: 12px;
      background: linear-gradient(90deg, var(--verde-sol), var(--dourado));
      border-radius: 20px;
      outline: none;
    }

    input[type=range]::-webkit-slider-thumb {
      -webkit-appearance: none;
      width: 28px;
      height: 28px;
      background: white;
      border-radius: 50%;
      box-shadow: 0 4px 14px rgba(0,0,0,0.3);
      border: 3px solid var(--verde-profundo);
      cursor: pointer;
    }

    .progress-bar-container {
      width: 100%;
      background-color: #e0e0e0;
      border-radius: 20px;
      margin: 1rem 0 2rem;
      height: 20px;
      overflow: hidden;
    }

    #progress-bars {
      height: 100%;
      width: 0%;
      background: linear-gradient(90deg, var(--verde-sol), #f1c40f);
      border-radius: 20px;
      transition: width 0.1s ease;
    }

    .resultado-dinamico {
      background: #e2f7e9;
      border-radius: 40px;
      padding: 2rem;
      margin-top: 2rem;
    }

    .linha-resultado {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0.8rem 0;
      border-bottom: 1px solid #b8e0cc;
      font-size: 1.2rem;
    }

    .linha-resultado:last-child {
      border-bottom: none;
    }

    .linha-resultado span:last-child {
      font-weight: 700;
      color: var(--verde-profundo);
      font-size: 1.4rem;
    }

    .destaque-economia {
      background: var(--verde-profundo);
      color: white;
      padding: 0.3rem 1rem;
      border-radius: 40px;
    }

    .destaque-economia span:last-child {
      color: var(--dourado) !important;
      font-size: 1.8rem !important;
    }

    .info-nota {
      font-size: 0.9rem;
      color: #3b6b58;
      margin-top: 1rem;
      text-align: center;
    }

    .contato-wrapper {
      display: flex;
      flex-wrap: wrap;
      gap: 3rem;
      background: white;
      border-radius: 50px;
      padding: 3rem;
      box-shadow: var(--sombra-fina);
    }

    .info-contato {
      flex: 1 1 200px;
    }
    .info-contato i {
      font-size: 1.8rem;
      background: #e0f7ea;
      padding: 15px;
      border-radius: 30px;
      color: var(--verde-profundo);
      margin-right: 15px;
    }

    .form-contato {
      flex: 2 1 300px;
      display: flex;
      flex-direction: column;
      gap: 1.2rem;
    }
    .form-contato input, .form-contato textarea {
      padding: 1rem 1.5rem;
      border-radius: 40px;
      border: 1.5px solid #d0f0de;
      font-size: 1rem;
      transition: var(--transicao);
    }
    .form-contato input:focus,
    .form-contato textarea:focus {
      border-color: var(--verde-sol);
      transform: scale(1.02);
    }

    footer {
      background: #0b2f23;
      color: #e0f0e5;
      padding: 2rem 8%;
      border-radius: 40px 40px 0 0;
      text-align: center;
      margin-top: 3rem;
    }

    .whatsapp-float {
      position: fixed;
      bottom: 30px;
      right: 30px;
      background: #25D366;
      color: white;
      width: 65px;
      height: 65px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 2rem;
      box-shadow: 0 10px 25px #25d36680;
      z-index: 99;
      transition: 0.3s;
      animation: pulse 2s infinite;
      text-decoration: none;
    }
    .whatsapp-float:hover {
      transform: scale(1.15);
    }
    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 #25d366cc; }
      70% { box-shadow: 0 0 0 20px #25d36600; }
      100% { box-shadow: 0 0 0 0 #25d36600; }
    }

    @media (max-width: 900px) {
      header {
        top: 10px;
        padding: 0.5rem 1.5rem;
      }
      .nav-menu {
        position: fixed;
        top: 100px;
        left: 5%;
        right: 5%;
        background: rgba(255,255,255,0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: stretch;
        border-radius: 40px;
        padding: 2rem;
        box-shadow: 0 30px 50px -20px black;
        display: none;
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-menu li a {
        padding: 1rem;
        justify-content: center;
      }
      .menu-toggle {
        display: block;
      }
      section {
        padding: 4rem 5%;
      }
      .hero-content h1 {
        font-size: 2.5rem;
      }
    }
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: all 0.8s ease;
    }
    .reveal.active {
      opacity: 1;
      transform: translateY(0);
    }