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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    background:
        radial-gradient(circle at 50% 20%,
            #10284a 0%,
            #071426 35%,
            #020711 70%,
            #000000 100%);
    color: #ffffff;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 64px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 0 48px;

    background: rgba(2, 7, 17, 0.72);
    border-bottom: 1px solid rgba(77, 166, 255, 0.12);

    backdrop-filter: blur(14px);

    z-index: 1000;
}

.navbar-brand {
    color: #d6aa52;
    text-decoration: none;

    font-size: 18px;
    font-weight: bold;
    letter-spacing: 4px;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 34px;
}

.navbar-menu a {
    position: relative;

    color: #b7c3d3;
    text-decoration: none;

    font-size: 11px;
    font-weight: bold;
    letter-spacing: 2px;

    transition: 0.3s ease;
}

.navbar-menu a:hover {
    color: #4da6ff;
}

.navbar-menu a::after {
    content: "";

    position: absolute;
    left: 0;
    bottom: -8px;

    width: 0;
    height: 1px;

    background: #4da6ff;

    transition: 0.3s ease;
}

.navbar-menu a:hover::after {
    width: 100%;
}

.hero {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 20px;
    text-align: center;
}

.hero-content {
    width: 100%;
    max-width: 1000px;
}

.hero-logo {
    display: block;
    width: 380px;
    height: auto;
    margin: 0 auto 18px;
    object-fit: contain;
    border-radius: 0;
    mix-blend-mode: screen;
    filter:
        drop-shadow(0 0 12px rgba(77, 166, 255, 0.28)) drop-shadow(0 0 18px rgba(214, 170, 82, 0.12));
}

.hero-label {
    display: inline-block;
    margin-bottom: 28px;
    font-size: 12px;
    letter-spacing: 4px;
    color: #4da6ff;
}

.hero h1 {
    font-size: clamp(56px, 8vw, 110px);
    letter-spacing: 10px;
    line-height: 1;
    color: #d6aa52;
    text-shadow:
        0 0 12px rgba(214, 170, 82, 0.18),
        0 0 35px rgba(77, 166, 255, 0.08);
}

.hero-system {
    margin: -8px 0 18px;
    color: #8fa4bb;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.38em;
    text-transform: uppercase;
}

.hero-slogan {
    margin-top: 22px;
    font-size: clamp(16px, 2vw, 22px);
    letter-spacing: 6px;
    color: #4da6ff;
}

.hero-description {
    max-width: 650px;
    margin: 34px auto 0;
    font-size: 18px;
    line-height: 1.8;
    letter-spacing: 1px;
    color: #b7c3d3;
}

.hero-engines {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
    margin-top: 38px;
}

.hero-engines span,
.hero-engines a {
    text-decoration: none;
    min-width: 150px;
    padding: 13px 20px;
    border: 1px solid rgba(214, 170, 82, 0.55);
    background: rgba(4, 13, 27, 0.55);
    font-size: 12px;
    letter-spacing: 3px;
    color: #d6aa52;
    backdrop-filter: blur(8px);
}

.hero-button {
    display: inline-block;
    margin-top: 46px;
    padding: 17px 34px;
    border: 1px solid #4da6ff;
    color: #ffffff;
    text-decoration: none;
    font-size: 12px;
    font-weight: bold;
    letter-spacing: 3px;
    background: rgba(77, 166, 255, 0.08);
    transition: 0.3s ease;
}

.hero-button:hover {
    background: #4da6ff;
    color: #020711;
    box-shadow: 0 0 28px rgba(77, 166, 255, 0.45);
    transform: translateY(-2px);
}

.technology {
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 120px 40px;

    background:
        linear-gradient(180deg,
            #020711 0%,
            #05101d 45%,
            #071426 100%);

    border-top: 1px solid rgba(77, 166, 255, 0.10);
}

.technology-content {
    width: 100%;
    max-width: 900px;

    text-align: center;
}

.section-label {
    display: inline-block;

    margin-bottom: 28px;

    font-size: 12px;
    letter-spacing: 4px;

    color: #4da6ff;
}

.technology h2 {
    font-size: clamp(42px, 6vw, 78px);

    line-height: 1.05;

    letter-spacing: 5px;

    color: #d6aa52;

    text-shadow:
        0 0 18px rgba(214, 170, 82, 0.10);
}

.technology-intro {
    max-width: 720px;

    margin: 34px auto 0;

    font-size: 19px;
    line-height: 1.8;

    color: #d8e1ec;
}

.technology-line {
    width: 90px;
    height: 1px;

    margin: 38px auto;

    background: linear-gradient(90deg,
            transparent,
            #4da6ff,
            transparent);

    box-shadow:
        0 0 15px rgba(77, 166, 255, 0.40);
}

.technology-text {
    max-width: 760px;

    margin: 0 auto;

    font-size: 16px;
    line-height: 1.9;

    color: #8fa0b5;
}

.engines {
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 120px 40px;

    background:
        radial-gradient(circle at 50% 35%,
            #10284a 0%,
            #071426 35%,
            #020711 75%);

    border-top: 1px solid rgba(214, 170, 82, 0.10);
}

.engines-content {
    width: 100%;
    max-width: 1200px;

    text-align: center;
}

.engines h2 {
    margin-top: 4px;

    font-size: clamp(38px, 5vw, 68px);
    line-height: 1.1;
    letter-spacing: 4px;

    color: #d6aa52;

    text-shadow:
        0 0 18px rgba(214, 170, 82, 0.10);
}

.engines-intro {
    max-width: 720px;

    margin: 28px auto 0;

    font-size: 17px;
    line-height: 1.8;

    color: #aab7c7;
}

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

    margin-top: 58px;
}

.engine-card {
    position: relative;
    min-height: 300px;
    scroll-margin-top: 210px;
    padding: 42px 34px;
    text-align: left;
    background:
        linear-gradient(145deg,
            rgba(12, 31, 56, 0.72),
            rgba(2, 7, 17, 0.88));

    border: 1px solid rgba(214, 170, 82, 0.30);

    overflow: hidden;

    transition:
        transform 0.35s ease,
        border-color 0.35s ease,
        box-shadow 0.35s ease;
}

.engine-card::before {
    content: "";

    position: absolute;
    top: 0;
    left: 0;

    width: 100%;
    height: 2px;

    background: linear-gradient(90deg,
            transparent,
            #4da6ff,
            transparent);

    opacity: 0.55;
}

.engine-card:hover {
    transform: translateY(-8px);

    border-color: rgba(77, 166, 255, 0.65);

    box-shadow:
        0 18px 50px rgba(0, 0, 0, 0.30),
        0 0 28px rgba(77, 166, 255, 0.10);
}

.engine-number {
    display: block;

    margin-bottom: 42px;

    font-size: 12px;
    letter-spacing: 3px;

    color: #4da6ff;
}

.engine-card h3 {
    margin-bottom: 20px;

    font-size: 25px;
    letter-spacing: 4px;

    color: #d6aa52;
}

.engine-card p {
    font-size: 15px;
    line-height: 1.9;

    color: #8fa0b5;
}

/* PLATFORMS */

.platforms {
    padding: 120px 24px;
    background: #020711;
}

.platforms-content {
    width: min(1100px, 100%);
    margin: 0 auto;
    text-align: center;
}

.platforms h2 {
    margin: 20px auto 18px;
    color: #d6aa52;
    font-size: clamp(38px, 5vw, 64px);
    line-height: 1.05;
    letter-spacing: 0.04em;
}

.platforms-intro {
    max-width: 720px;
    margin: 0 auto;
    color: #9aabc0;
    font-size: 16px;
    line-height: 1.8;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.platform-card {
    padding: 42px 36px;
    text-align: left;
    background: rgba(7, 17, 34, 0.72);
    border: 1px solid rgba(214, 170, 82, 0.32);
    transition: 0.3s ease;
}

.platform-card:hover {
    transform: translateY(-6px);
    border-color: #4da6ff;
    box-shadow: 0 16px 40px rgba(77, 166, 255, 0.12);
}

.platform-version {
    display: inline-block;
    margin-bottom: 24px;
    color: #4da6ff;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.24em;
}

.platform-card h3 {
    margin: 0 0 18px;
    color: #d6aa52;
    font-size: 28px;
    letter-spacing: 0.08em;
}

.platform-card p {
    margin: 0;
    color: #9aabc0;
    font-size: 15px;
    line-height: 1.8;
}

.performance {
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 120px 40px;

    background:
        linear-gradient(180deg,
            #020711 0%,
            #06101d 48%,
            #071426 100%);

    border-top: 1px solid rgba(77, 166, 255, 0.10);
}

.performance-content {
    width: 100%;
    max-width: 1100px;

    text-align: center;
}

.performance h2 {
    font-size: clamp(40px, 5vw, 70px);

    line-height: 1.1;
    letter-spacing: 5px;

    color: #d6aa52;

    text-shadow:
        0 0 18px rgba(214, 170, 82, 0.10);
}

.performance-intro {
    max-width: 720px;

    margin: 28px auto 0;

    font-size: 17px;
    line-height: 1.8;

    color: #aab7c7;
}

.performance-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);

    gap: 18px;

    margin-top: 58px;
}

.performance-card {
    min-height: 165px;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    padding: 28px 20px;

    background:
        linear-gradient(145deg,
            rgba(12, 31, 56, 0.65),
            rgba(2, 7, 17, 0.90));

    border: 1px solid rgba(214, 170, 82, 0.28);

    transition:
        transform 0.35s ease,
        border-color 0.35s ease,
        box-shadow 0.35s ease;
}

.performance-card:hover {
    transform: translateY(-6px);

    border-color: rgba(77, 166, 255, 0.65);

    box-shadow:
        0 18px 45px rgba(0, 0, 0, 0.28),
        0 0 25px rgba(77, 166, 255, 0.10);
}

.performance-value {
    font-size: 34px;
    font-weight: bold;

    color: #d6aa52;
}

.performance-label {
    margin-top: 14px;

    font-size: 11px;
    letter-spacing: 3px;

    color: #4da6ff;
}

.performance-note {
    max-width: 780px;

    margin: 42px auto 0;

    font-size: 13px;
    line-height: 1.8;

    color: #6f8197;
}

.contact {
    min-height: 78vh;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 120px 40px;

    background:
        radial-gradient(circle at 50% 30%,
            #10284a 0%,
            #071426 35%,
            #020711 75%);

    border-top: 1px solid rgba(214, 170, 82, 0.10);
}

.contact-content {
    width: 100%;
    max-width: 900px;

    text-align: center;
}

.contact h2 {
    font-size: clamp(42px, 6vw, 76px);

    line-height: 1.05;
    letter-spacing: 5px;

    color: #d6aa52;

    text-shadow:
        0 0 18px rgba(214, 170, 82, 0.10);
}

.contact-intro {
    max-width: 680px;

    margin: 30px auto 0;

    font-size: 17px;
    line-height: 1.8;

    color: #aab7c7;
}

.contact-form {
    width: 100%;
    max-width: 760px;
    margin: 46px auto 0;
    text-align: left;
}

.contact-form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.contact-field {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.contact-field label {
    font-size: 10px;
    font-weight: bold;
    letter-spacing: 2px;
    color: #d6aa52;
}

.contact-field input,
.contact-field textarea {
    width: 100%;
    padding: 15px 16px;

    background: rgba(2, 7, 17, 0.72);
    border: 1px solid rgba(214, 170, 82, 0.28);
    outline: none;

    color: #ffffff;
    font-family: inherit;
    font-size: 14px;

    transition:
        border-color 0.3s ease,
        box-shadow 0.3s ease;
}

.contact-field textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-field input:focus,
.contact-field textarea:focus {
    border-color: #4da6ff;
    box-shadow: 0 0 18px rgba(77, 166, 255, 0.12);
}

.contact-form .contact-button {
    display: block;
    margin: 12px auto 0;
    cursor: pointer;
}

.contact-actions {
    margin-top: 42px;
}

.contact-button {
    display: inline-block;

    padding: 17px 36px;

    border: 1px solid #4da6ff;

    background: rgba(77, 166, 255, 0.08);

    color: #ffffff;
    text-decoration: none;

    font-size: 12px;
    font-weight: bold;
    letter-spacing: 3px;

    transition: 0.3s ease;
}

.contact-button:hover {
    background: #4da6ff;

    color: #020711;

    box-shadow:
        0 0 30px rgba(77, 166, 255, 0.40);

    transform: translateY(-2px);
}

.language-selector {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 4px;
}

.language-selector span {
    color: #4a5c72;
    font-size: 11px;
}

.language-button {
    padding: 0;
    background: transparent;
    border: none;
    color: #6f8197;
    font-family: inherit;
    font-size: 11px;
    font-weight: bold;
    letter-spacing: 1px;
    cursor: pointer;
    transition: 0.3s ease;
}

.language-button:hover {
    color: #4da6ff;
}

.language-button.active {
    color: #d6aa52;
}

.legal-section {
    display: none;
    padding: 110px 40px;
    background:
        linear-gradient(180deg,
            #071426 0%,
            #020711 100%);
    border-top: 1px solid rgba(77, 166, 255, 0.10);
}

.legal-content {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.legal-content h2 {
    margin-top: 8px;
    font-size: clamp(34px, 5vw, 58px);
    line-height: 1.1;
    letter-spacing: 4px;
    color: #d6aa52;
}

.legal-content p {
    max-width: 780px;
    margin: 34px auto 0;
    font-size: 15px;
    line-height: 1.9;
    color: #8fa0b5;
}

.legal-close {
    margin-top: 36px;
    padding: 13px 28px;

    background: transparent;
    border: 1px solid rgba(77, 166, 255, 0.65);

    color: #ffffff;

    font-family: inherit;
    font-size: 11px;
    font-weight: bold;
    letter-spacing: 2px;

    cursor: pointer;
    transition: 0.3s ease;
}

.legal-close:hover {
    background: #4da6ff;
    color: #020711;

    box-shadow:
        0 0 24px rgba(77, 166, 255, 0.30);

    transform: translateY(-2px);
}

.site-footer {
    padding: 48px 30px;
    text-align: center;
    background: #020711;
    border-top: 1px solid rgba(214, 170, 82, 0.15);
}

.footer-brand {
    font-size: 17px;
    font-weight: bold;
    letter-spacing: 4px;
    color: #d6aa52;
}

.footer-system {
    margin: 6px 0 8px;
    color: #6f8197;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.32em;
    text-transform: uppercase;
}

.footer-slogan {
    margin-top: 12px;
    font-size: 12px;
    letter-spacing: 3px;
    color: #4da6ff;
}

.footer-copy {
    margin-top: 24px;
    font-size: 11px;
    letter-spacing: 1px;
    color: #6f8197;
}

.footer-copy a {
    color: #6f8197;
    text-decoration: none;
    transition: 0.3s ease;
}

.footer-copy a:hover {
    color: #4da6ff;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    margin-top: 20px;
}

.footer-links a {
    color: #8fa0b5;
    text-decoration: none;
    font-size: 10px;
    font-weight: bold;
    letter-spacing: 1.5px;
    transition: 0.3s ease;
}

.footer-links a:hover {
    color: #4da6ff;
}

.menu-toggle {
    display: none;
}

@media (max-width: 700px) {

    .engine-card {
            scroll-margin-top: 80px;
        }

    .hero-system {
            margin-top: 0;
        }

    .platforms-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }

    .contact-form-row {
            grid-template-columns: 1fr;
            gap: 0;
        }
    
        .contact-form {
            margin-top: 36px;
        }
    
        .contact-field input,
        .contact-field textarea {
            font-size: 16px;
        }
    
        .contact-form .contact-button {
            width: 100%;
            max-width: 280px;
        }

    .legal-section {
            padding: 80px 20px;
        }

    .technology h2 {
            font-size: 34px;
            letter-spacing: 3px;
            line-height: 1.2;
        }

    .performance-note {
            margin-bottom: 20px;
        }

    .contact {
            min-height: auto;
            padding-top: 90px;
            padding-bottom: 90px;
            scroll-margin-top: 58px;
        }

    .performance-card {
            min-height: 135px;
            padding: 24px 18px;
        }

    .engines h2 {
            font-size: 34px;
            letter-spacing: 3px;
            line-height: 1.2;
        }

    .engine-card {
            min-height: auto;
            padding: 34px 30px;
        }

    .technology,
        .engines,
        .performance,
        .contact {
            padding-left: 20px;
            padding-right: 20px;
        }

    .engine-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-top: 36px;
    }

    .hero-logo {
            width: 300px;
            max-width: 100%;
        }

    .menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
    
            margin-left: auto;
            padding: 0;
    
            width: 38px;
            height: 38px;
    
            background: transparent;
            border: 1px solid rgba(214, 170, 82, 0.35);
    
            color: #d6aa52;
    
            font-size: 23px;
            line-height: 1;
    
            cursor: pointer;
        }

        .navbar {
                height: 58px;
                padding: 0 18px;
            }
        
            .navbar-brand {
                font-size: 14px;
                letter-spacing: 2px;
            }
        
        .navbar-menu {
            display: none;
    
            position: absolute;
            top: 58px;
            left: 0;
    
            width: 100%;
    
            flex-direction: column;
            gap: 0;
    
            background: #020711;
            border-bottom: 1px solid rgba(77, 166, 255, 0.15);
    
            backdrop-filter: blur(14px);
        }
    
        .navbar-menu.active {
            display: flex;
        }
    
        .navbar-menu a {
            width: 100%;
    
            padding: 18px 20px;
    
            text-align: center;
    
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
    .hero {
        min-height: auto;
        padding: 90px 18px 70px;
    }

    .hero h1 {
        letter-spacing: 5px;
    }

    .hero-slogan {
        letter-spacing: 3px;
    }

    .hero-description {
        font-size: 16px;
    }

    .hero-engines {
        flex-direction: column;
    }

   .hero-engines span,
   .hero-engines a {
       width: 100%;
       max-width: 280px;
   }

    .performance-grid {
         grid-template-columns: 1fr;
        gap: 16px;
    }

    .language-selector {
    width: 100%;
    justify-content: center;
    padding: 16px 20px;
    margin-left: 0;
    }

}