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

:root {
    --primary-blue: #00a2ff;
    --dark-blue: #0066cc;
    --bg-dark: #0a0a0f;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a25;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --border-color: #2a2a3a;
    --glow-blue: rgba(0, 162, 255, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

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

ul {
    list-style: none;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    transition: color 0.3s ease;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--primary-blue);
}

.nav-download {
    background: var(--primary-blue);
    color: var(--text-primary) !important;
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
    transition: background 0.3s ease, transform 0.2s ease;
}

.nav-download:hover {
    background: var(--dark-blue);
    transform: translateY(-2px);
}

.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 700px;
    text-align: center;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-visual {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.glow-circle {
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--glow-blue) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.1); }
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn svg {
    width: 20px;
    height: 20px;
}

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

.btn-primary:hover {
    background: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px var(--glow-blue);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: var(--text-primary);
}

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--primary-blue);
    background: rgba(0, 162, 255, 0.1);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

section {
    padding: 5rem 2rem;
}

section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-description {
    text-align: center;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.1rem;
}

.features {
    background: var(--bg-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary-blue);
    transform: translateY(-5px);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 162, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary-blue);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.about {
    background: var(--bg-card);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

.compatibility {
    background: var(--bg-dark);
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.platform-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.platform-card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-5px);
}

.platform-icon {
    width: 60px;
    height: 60px;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
}

.platform-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.platform-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.capabilities {
    background: var(--bg-card);
}

.capabilities-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.capability-item {
    padding: 1.5rem;
    border-left: 3px solid var(--primary-blue);
    background: rgba(0, 162, 255, 0.05);
    border-radius: 0 8px 8px 0;
}

.capability-item h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--primary-blue);
}

.capability-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.download-section {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 100%);
    text-align: center;
    padding: 6rem 2rem;
}

.download-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.version-info {
    margin-top: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo {
    width: 32px;
    height: 32px;
}

.footer-brand span {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.footer-text {
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-card);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu {
        display: flex;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

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

    .capabilities-list {
        grid-template-columns: 1fr;
    }

    section h2 {
        font-size: 2rem;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-large {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}