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

:root {
    --primary-blue: #2B9FD9;
    --secondary-blue: #1E5A8E;
    --accent-cyan: #4DD4E8;
    --dark-bg: #0A0E14;
    --dark-card: #141921;
    --text-primary: #E8EDF4;
    --text-secondary: #A0AEC0;
    --border: #1E2936;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 14, 20, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.nav-logo .logo {
    height: 32px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: 0.3s;
}

/* Hero */
.hero {
    padding: 12rem 0 8rem;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #0f1419 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(43, 159, 217, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

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

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.35rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 1rem 2.5rem;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    display: inline-block;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(43, 159, 217, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary-blue);
    background: rgba(43, 159, 217, 0.05);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.1rem;
}

/* Problem Section */
.problem {
    padding: 8rem 0;
    background: var(--dark-bg);
}

.problem h2 {
    font-size: 2.75rem;
    text-align: center;
    margin-bottom: 4rem;
    font-weight: 600;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.problem-card {
    padding: 2.5rem;
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: all 0.3s;
}

.problem-card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-4px);
}

.problem-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent-cyan);
    font-weight: 600;
}

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

/* Solution Section */
.solution {
    padding: 8rem 0;
    background: linear-gradient(180deg, var(--dark-bg) 0%, var(--dark-card) 100%);
}

.solution h2 {
    font-size: 2.75rem;
    text-align: center;
    margin-bottom: 3rem;
    font-weight: 600;
}

.solution-intro {
    max-width: 800px;
    margin: 0 auto 4rem;
    font-size: 1.2rem;
    text-align: center;
    color: var(--text-secondary);
    line-height: 1.8;
}

.solution-features {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.feature {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.feature-icon {
    font-size: 2rem;
    color: var(--primary-blue);
    font-weight: 300;
    min-width: 40px;
}

.feature-text h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

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

/* How It Works */
.how-it-works {
    padding: 8rem 0;
    background: var(--dark-bg);
}

.how-it-works h2 {
    font-size: 2.75rem;
    text-align: center;
    margin-bottom: 5rem;
    font-weight: 600;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
}

.step {
    text-align: center;
}

.step-number {
    font-size: 3.5rem;
    font-weight: 300;
    color: var(--primary-blue);
    opacity: 0.5;
    margin-bottom: 1.5rem;
}

.step h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

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

/* Market Section */
.market {
    padding: 8rem 0;
    background: var(--dark-card);
}

.market h2 {
    font-size: 2.75rem;
    text-align: center;
    margin-bottom: 2rem;
    font-weight: 600;
}

.market-intro {
    max-width: 700px;
    margin: 0 auto 4rem;
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.market-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.market-card {
    padding: 2.5rem;
    background: var(--dark-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: all 0.3s;
}

.market-card:hover {
    border-color: var(--primary-blue);
}

.market-card h3 {
    font-size: 1.35rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

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

/* Final CTA */
.final-cta {
    padding: 8rem 0;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #0a1015 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.final-cta::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(77, 212, 232, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.final-cta h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.final-cta p {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

/* Footer */
footer {
    padding: 3rem 0;
    background: var(--dark-bg);
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo .logo {
    height: 28px;
    margin-bottom: 0.75rem;
}

.footer-logo p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--text-primary);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--dark-bg);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: 1px solid var(--border);
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 8rem 0 5rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

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

    .btn {
        width: 100%;
        text-align: center;
    }

    .problem h2,
    .solution h2,
    .how-it-works h2,
    .market h2 {
        font-size: 2rem;
    }

    .final-cta h2 {
        font-size: 2rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .problem-grid,
    .market-grid,
    .steps {
        grid-template-columns: 1fr;
    }

    .feature {
        flex-direction: column;
        text-align: center;
    }
}