:root {
      --bg: #050608;
      --panel: #0d1117;
      --panel2: #111827;
      --text: #f5f7fb;
      --muted: #aeb8c6;
      --blue: #0f83d8;
      --orange: #f47718;
      --line: rgba(255,255,255,.12);
    }
    * { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: 'Inter', sans-serif;
      background: var(--bg);
      color: var(--text);
      overflow-x: hidden;
    }
    
    /* Hero Section */
    .hero {
      min-height: 100vh;
      position: relative;
      background: 
        linear-gradient(90deg, rgba(5,6,8,0.95) 0%, rgba(5,6,8,0.85) 50%, rgba(5,6,8,0.4) 100%),
        url('images/baner-opt.jpg') center/cover no-repeat;
      padding: 40px 8vw;
      display: flex;
      flex-direction: column;
    }
    header {
      display: flex;
      justify-content: flex-start;
      align-items: center;
      margin-bottom: auto;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .brand svg {
      color: var(--blue);
      filter: drop-shadow(0 0 10px rgba(15,131,216,0.5));
    }
    .brand h1 { margin: 0; font-size: 32px; font-weight: 900; letter-spacing: 2px; }
    .brand h1 span { color: var(--orange); }
    .brand p { margin: 2px 0 0; font-size: 10px; letter-spacing: 4px; color: var(--muted); font-weight: 600; }
    
    .hero-content {
      max-width: 750px;
      margin: auto 0;
      padding: 60px 0;
    }
    .hero h2 {
      font-size: 52px;
      line-height: 1.1;
      font-weight: 900;
      margin: 0 0 24px;
      text-transform: uppercase;
    }
    .hero h2 span.blue { color: var(--blue); }
    .hero h2 span.orange { color: var(--orange); }
    .hero p.lead {
      font-size: 20px;
      line-height: 1.6;
      color: var(--muted);
      margin-bottom: 40px;
      max-width: 650px;
    }
    
    .hero-features {
      display: flex;
      gap: 40px;
      flex-wrap: wrap;
    }
    .hf-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      gap: 15px;
      padding-right: 30px;
      border-right: 1px solid rgba(255,255,255,0.2);
    }
    .hf-item:last-child {
      border-right: none;
      padding-right: 0;
    }
    .hf-item .icon {
      font-size: 40px;
      color: var(--blue);
    }
    .hf-item:nth-child(2) .icon { color: var(--orange); }
    .hf-item span { font-weight: 600; font-size: 14px; max-width: 100px; line-height: 1.4; color: #ffffff; }

    .ns-banner {
      background: #ffffff;
      text-align: center;
      padding: 40px 20px;
    }
    .ns-banner h2 {
      margin: 0;
      color: #050608;
      font-size: 36px;
      font-weight: 900;
      text-transform: uppercase;
    }
    .ns-banner h2 span.orange { color: var(--orange); }
    .ns-line {
      height: 4px;
      width: 150px;
      margin: 15px auto 0;
      background: linear-gradient(90deg, var(--blue) 50%, var(--orange) 50%);
    }

    .solutions-wrapper {
      background: #ffffff;
      padding: 0 4vw 80px;
    }
    .sol-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      max-width: 1400px;
      margin: 0 auto;
    }
    .sol-card {
      background: #ffffff;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 10px 30px rgba(0,0,0,0.1);
      display: flex;
      flex-direction: column;
    }
    .sol-header {
      padding: 40px;
      position: relative;
      background-size: cover;
      background-position: right center;
      display: flex;
      align-items: center;
      min-height: 250px;
      color: #ffffff;
    }
    .sol-header::before {
      content: ''; position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(5,6,8,0.95) 0%, rgba(5,6,8,0.75) 45%, rgba(5,6,8,0) 85%);
      z-index: 1;
    }
    .sol-header-content {
      position: relative;
      z-index: 2;
      display: flex;
      gap: 20px;
      max-width: 420px;
    }
    .sol-header.blue { border-top: 4px solid var(--blue); }
    .sol-header.orange { border-top: 4px solid var(--orange); }
    
    .sol-header-icon {
      width: 60px; height: 60px;
      border-radius: 50%;
      border: 2px solid;
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
    }
    .sol-header.blue .sol-header-icon { border-color: var(--blue); color: var(--blue); }
    .sol-header.orange .sol-header-icon { border-color: var(--orange); color: var(--orange); }
    .sol-header-icon svg { width: 32px; height: 32px; }

    .sol-header-text h4 { margin: 0 0 10px; font-size: 26px; font-weight: 800; text-transform: uppercase; line-height: 1.1; }
    .sol-header.blue h4 { color: var(--blue); }
    .sol-header.orange h4 { color: var(--orange); }
    .sol-header-text p { margin: 0; font-size: 14px; line-height: 1.5; color: #aeb8c6; }
    
    .sol-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      padding: 40px 20px;
      flex-grow: 1;
    }
    .sol-card:first-child .sol-grid { background: #f4f8fc; }
    .sol-card:last-child .sol-grid { background: #fffaf4; }

    .sol-item {
      text-align: center;
      padding: 20px 15px;
      position: relative;
    }
    .sol-item:not(:nth-child(3n))::after {
      content: '';
      position: absolute;
      right: 0;
      top: 20%;
      height: 60%;
      width: 1px;
      background: rgba(0,0,0,0.1);
    }
    .sol-item svg { width: 40px; height: 40px; margin-bottom: 15px; }
    .sol-card:first-child .sol-item svg { color: var(--blue); }
    .sol-card:last-child .sol-item svg { color: var(--orange); }
    .sol-item p { margin: 0; font-size: 14px; font-weight: 600; color: #333333; line-height: 1.4; }

    /* Benefits */
    .benefits-bg { background: #050608; padding: 60px 2vw; }
    .benefits-header { text-align: center; margin-bottom: 40px; }
    .benefits-header h3 { font-size: 26px; font-weight: 800; color: #ffffff; margin: 0; text-transform: uppercase; }
    .ben-line { height: 3px; width: 60px; margin: 10px auto 0; background: linear-gradient(90deg, var(--blue) 50%, var(--orange) 50%); }

    .benefits-grid {
      display: flex;
      justify-content: center;
      align-items: flex-start;
      flex-wrap: wrap;
      gap: 30px;
      max-width: 1400px;
      margin: 0 auto;
    }
    .ben-item {
      flex: 1 1 120px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      padding: 0 15px;
      position: relative;
    }
    .ben-item:not(:last-child)::after {
      content: ''; position: absolute; right: 0; top: 10%; height: 80%; width: 1px; background: rgba(255,255,255,0.15);
    }
    .ben-icon { margin-bottom: 15px; }
    .ben-icon svg { width: 44px; height: 44px; }
    .ben-item:nth-child(odd) .ben-icon { color: var(--blue); }
    .ben-item:nth-child(even) .ben-icon { color: var(--orange); }
    .ben-item p { margin: 0; font-size: 13px; font-weight: 500; color: #ffffff; line-height: 1.4; max-width: 140px; }

    /* Projects */
    .projects-bg { background: #ffffff; padding: 60px 4vw 80px; }
    .method-header { text-align: center; margin-bottom: 60px; }
    .method-header h3 { font-size: 32px; font-weight: 900; color: #050608; margin: 0; text-transform: uppercase; }
    .method-header h3 span { color: var(--orange); }

    .projects-gallery {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1400px;
      margin: 0 auto;
    }
    .project-img {
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 20px rgba(0,0,0,0.1);
      aspect-ratio: 4/3;
      position: relative;
      cursor: pointer;
    }
    .project-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
      display: block;
    }
    .project-img:hover img {
      transform: scale(1.05);
    }

    /* Footer / CTA */
    .footer-cta {
      background: linear-gradient(90deg, rgba(13,17,23,0.7), rgba(5,6,8,0.7)), url('images/footer-opt.jpg') center/cover no-repeat;
      background-blend-mode: overlay;
      padding: 80px 8vw;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }
    .footer-cta h2 {
      font-size: 36px;
      font-weight: 900;
      margin: 0 0 16px;
      text-transform: uppercase;
    }
    .footer-cta h2 span { color: var(--orange); }
    .footer-cta p {
      font-size: 18px;
      color: var(--muted);
      max-width: 700px;
      line-height: 1.6;
      margin: 0;
    }

    footer {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 30px 8vw;
      background: #121212;
      flex-wrap: wrap;
      gap: 20px;
    }
    .contact-info {
      display: flex;
      gap: 30px;
      flex-wrap: wrap;
    }
    .contact-item {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--muted);
      text-decoration: none;
      font-size: 15px;
      transition: color 0.2s;
    }
    .contact-item:hover { color: white; }
    .contact-item svg { width: 18px; height: 18px; color: var(--blue); }
    
    .footer-logo {
      display: flex;
      justify-content: flex-end;
    }

    /* Floating WhatsApp Button */
    .whatsapp-float {
      position: fixed;
      bottom: 30px;
      right: 30px;
      background-color: #25D366;
      color: white;
      border-radius: 50px;
      padding: 12px 28px;
      font-size: 18px;
      font-weight: 800;
      text-decoration: none;
      box-shadow: 0 4px 10px rgba(0,0,0,0.3);
      z-index: 1000;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      letter-spacing: -0.5px;
    }
    .whatsapp-float:hover {
      transform: translateY(-3px);
      box-shadow: 0 6px 15px rgba(37,211,102,0.4);
      color: white;
    }


    @media(max-width: 992px) {
      .sol-container { grid-template-columns: 1fr; }
      .projects-gallery { grid-template-columns: repeat(2, 1fr); }
      .ben-item:not(:last-child)::after { display: none; }
    }
    @media(max-width: 768px) {
      header { flex-direction: column; gap: 15px; }
      .brand img { height: 90px !important; }
      .lang-switcher {
        margin-left: 0;
        justify-content: center;
        background: rgba(255,255,255,0.05);
        padding: 6px 16px;
        border-radius: 20px;
      }
      .hero h2 { font-size: 32px; }
      .hero p.lead { font-size: 18px; }
      .hf-item { border-right: none; padding-right: 0; }
      .sol-grid { grid-template-columns: 1fr; }
      .projects-gallery { grid-template-columns: repeat(2, 1fr); gap: 10px; }
      .sol-header { min-height: auto; padding: 30px 20px; }
      .benefits-grid { gap: 40px; }
      .ben-item { flex: 1 1 40%; }
      footer { flex-direction: column; text-align: center; justify-content: center; }
      .contact-info { justify-content: center; }
      .footer-logo { justify-content: center; margin-top: 20px; }
    }

    /* Lightbox */
    .lightbox {
      position: fixed;
      z-index: 9999;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.9);
      display: flex;
      align-items: center;
      justify-content: center;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s ease;
    }
    .lightbox.active {
      opacity: 1;
      pointer-events: auto;
    }
    .lightbox img {
      max-width: 90%;
      max-height: 90vh;
      box-shadow: 0 0 20px rgba(0,0,0,0.5);
      border-radius: 8px;
    }
    .lightbox-close {
      position: absolute;
      top: 20px;
      right: 30px;
      color: white;
      font-size: 40px;
      font-weight: bold;
      cursor: pointer;
    }

/* Lang Switcher */
.lang-switcher {
  margin-left: auto;
  font-weight: 600;
  font-size: 14px;
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--muted);
}
.lang-switcher a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.3s;
}
.lang-switcher a.active {
  color: var(--orange);
  font-weight: 800;
}
.lang-switcher a:hover {
  color: white;
}

@media print {
  header, footer, .whatsapp-float, .lang-switcher {
    display: none !important;
  }
  * {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }
  .hero, .solutions-wrapper, .benefits-bg, .projects-bg, .footer-cta {
    page-break-inside: avoid;
  }
}