:root {
        --color1: #1e1d25;
        --color2: #554454;
        --color3: #75acb6;
        --color4: #c8dfce;
        --color5: #ffffff;
      }

      .custom-color1 {
        color: var(--color1);
      }
      .custom-color2 {
        color: var(--color2);
      }
      .custom-color3 {
        color: var(--color3);
      }
      .custom-color4 {
        color: var(--color4);
      }
      .custom-color5 {
        color: var(--color5);
      }

      .bg-custom-color1 {
        background-color: var(--color1);
      }
      .bg-custom-color2 {
        background-color: var(--color2);
      }
      .bg-custom-color3 {
        background-color: var(--color3);
      }
      .bg-custom-color4 {
        background-color: var(--color4);
      }
      .bg-custom-color5 {
        background-color: var(--color5);
      }

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

      body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          sans-serif;
        line-height: 1.6;
        overflow-x: hidden;
      }

      
      .header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 15px 30px;
        background-color: var(--color1);
        color: var(--color5);
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        transition: all 0.3s ease;
        box-shadow: 0 2px 20px rgba(30, 29, 37, 0.3);
      }

      .logo {
        font-size: 1.8rem;
        font-weight: bold;
        color: var(--color3);
        letter-spacing: 1px;
      }

      .nav ul {
        display: flex;
        list-style: none;
        gap: 30px;
      }

      .nav a {
        color: var(--color5);
        text-decoration: none;
        font-weight: 500;
        transition: all 0.3s ease;
        position: relative;
        padding: 8px 0;
      }

      .nav a::after {
        content: "";
        position: absolute;
        width: 0;
        height: 2px;
        bottom: 0;
        left: 0;
        background-color: var(--color3);
        transition: width 0.3s ease;
      }

      .nav a:hover::after {
        width: 100%;
      }

      .contacts {
        display: flex;
        flex-direction: column;
        align-items: flex-end;
        gap: 3px;
      }

      .contacts p {
        font-size: 0.75rem;
        margin: 0;
        opacity: 0.9;
      }

      .burger {
        display: none;
        font-size: 24px;
        cursor: pointer;
        color: var(--color3);
        transition: transform 0.3s ease;
      }

      .burger:hover {
        transform: scale(1.1);
      }

      .mobile-menu {
        visibility: hidden;
        opacity: 0;
        transform: translateY(-20px);
        transition: all 0.3s ease;
        background-color: var(--color2);
        color: var(--color5);
        padding: 30px;
        position: fixed;
        top: 80px;
        right: 0;
        width: 300px;
        z-index: 999;
        border-radius: 0 0 0 20px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
      }

      .mobile-menu.active {
        visibility: visible;
        opacity: 1;
        transform: translateY(0);
      }

      .mobile-nav ul {
        list-style: none;
        margin-bottom: 20px;
      }

      .mobile-nav li {
        margin: 15px 0;
      }

      .mobile-nav a {
        color: var(--color5);
        text-decoration: none;
        font-size: 1.1rem;
      }

      .mobile-contacts p {
        margin: 5px 0;
        font-size: 0.9rem;
      }

      
      .dropdown {
        position: relative;
      }

      .dropdown-content {
        display: none;
        position: absolute;
        background-color: var(--color2);
        min-width: 200px;
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
        z-index: 1001;
        border-radius: 8px;
        padding: 10px 0;
        top: 100%;
        left: 0;
      }

      .dropdown:hover .dropdown-content {
        display: block;
        animation: dropdownFade 0.3s ease;
      }

      .dropdown-content a {
        color: var(--color5);
        padding: 10px 20px;
        text-decoration: none;
        display: block;
        transition: background-color 0.3s ease;
      }

      .dropdown-content a:hover {
        background-color: var(--color3);
      }

      @keyframes dropdownFade {
        from {
          opacity: 0;
          transform: translateY(-10px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }

      
      .parallax-container {
        position: relative;
        overflow: hidden;
      }

      .parallax-bg {
        position: absolute;
        top: -20%;
        left: 0;
        width: 100%;
        height: 120%;
        object-fit: cover;
        z-index: -1;
        transition: transform 0.1s ease-out;
      }

      
      .fade-in {
        opacity: 0;
        transform: translateY(30px);
        transition: all 0.8s ease;
      }

      .fade-in.visible {
        opacity: 1;
        transform: translateY(0);
      }

      .slide-in-left {
        opacity: 0;
        transform: translateX(-50px);
        transition: all 0.8s ease;
      }

      .slide-in-left.visible {
        opacity: 1;
        transform: translateX(0);
      }

      .slide-in-right {
        opacity: 0;
        transform: translateX(50px);
        transition: all 0.8s ease;
      }

      .slide-in-right.visible {
        opacity: 1;
        transform: translateX(0);
      }

      
      .section-divider {
        position: relative;
      }

      .section-divider::before {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 50px;
        background: var(--color4);
        clip-path: polygon(0 50%, 100% 0%, 100% 100%, 0% 100%);
      }

      
      .interactive-card {
        transition: all 0.4s ease;
        position: relative;
        overflow: hidden;
      }

      .interactive-card::before {
        content: "";
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(
          90deg,
          transparent,
          rgba(117, 172, 182, 0.2),
          transparent
        );
        transition: left 0.6s ease;
      }

      .interactive-card:hover::before {
        left: 100%;
      }

      .interactive-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
      }

      
      .custom-btn {
        position: relative;
        padding: 12px 30px;
        border: none;
        background: var(--color3);
        color: var(--color5);
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        overflow: hidden;
        text-decoration: none;
        display: inline-block;
        border-radius: 25px;
      }

      .custom-btn::before {
        content: "";
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: var(--color1);
        transition: left 0.3s ease;
      }

      .custom-btn span {
        position: relative;
        z-index: 1;
      }

      .custom-btn:hover::before {
        left: 0;
      }

      
      @media (max-width: 768px) {
        .nav,
        .contacts {
          display: none;
        }
        .burger {
          display: block;
        }
        .header {
          padding: 15px 20px;
        }
        .logo {
          font-size: 1.5rem;
        }
      }

      
      .hero-section {
        min-height: 100vh;
        display: flex;
        align-items: center;
        position: relative;
        background: var(--color1);
      }

      .geometric-bg {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        opacity: 0.1;
        background-image: polygon(50% 0%, 0% 100%, 100% 100%),
          polygon(50% 0%, 0% 100%, 100% 100%);
      }

      .floating-elements {
        position: absolute;
        width: 100%;
        height: 100%;
        overflow: hidden;
        z-index: 1;
      }

      .floating-element {
        position: absolute;
        background: var(--color3);
        border-radius: 50%;
        animation: float 6s ease-in-out infinite;
        opacity: 0.3;
      }

      .floating-element:nth-child(1) {
        width: 10px;
        height: 10px;
        top: 20%;
        left: 20%;
        animation-delay: 0s;
      }

      .floating-element:nth-child(2) {
        width: 15px;
        height: 15px;
        top: 60%;
        left: 80%;
        animation-delay: 2s;
      }

      .floating-element:nth-child(3) {
        width: 8px;
        height: 8px;
        top: 80%;
        left: 30%;
        animation-delay: 4s;
      }

      @keyframes float {
        0%,
        100% {
          transform: translateY(0px) rotate(0deg);
        }
        50% {
          transform: translateY(-20px) rotate(180deg);
        }
      }

      .services-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 30px;
        margin-top: 50px;
      }

      .service-card {
        background: var(--color5);
        padding: 30px;
        border-radius: 15px;
        position: relative;
        transition: all 0.3s ease;
        border-left: 4px solid var(--color3);
      }

      .service-card:hover {
        transform: translateY(-8px);
        box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
      }

      .zigzag-pattern {
        background-image: linear-gradient(
            45deg,
            var(--color4) 25%,
            transparent 25%
          ),
          linear-gradient(-45deg, var(--color4) 25%, transparent 25%),
          linear-gradient(45deg, transparent 75%, var(--color4) 75%),
          linear-gradient(-45deg, transparent 75%, var(--color4) 75%);
        background-size: 20px 20px;
        background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
        opacity: 0.1;
      }