:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --text: #0f172a;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --bg: #ffffff;
    --bg-secondary: #f8fafc;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

.nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.logo img {
    height: 32px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-login {
    color: var(--text) !important;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
}

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

.btn-secondary:hover {
    background: var(--bg-secondary);
}

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

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
}

/* Hero */
.hero {
    padding: 160px 0 120px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 64px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.hero p {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 48px;
}

.hero-trust {
    display: flex;
    gap: 16px;
    justify-content: center;
    font-size: 14px;
    color: var(--text-secondary);
}

/* Social Proof */
.social-proof {
    padding: 80px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.proof-label {
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
}

.platform-item {
    text-align: center;
    padding: 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

/* Sections */
section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 80px;
}

.section-header h2 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 20px;
    color: var(--text-secondary);
}

/* Features */
.features {
    background: var(--bg);
}

.feature-list {
    display: grid;
    gap: 48px;
    max-width: 900px;
    margin: 0 auto;
}

.feature-item {
    display: grid;
    grid-template-columns: 64px 1fr;
    gap: 24px;
}

.feature-icon {
    font-size: 40px;
    line-height: 1;
}

.feature-text h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Use Cases */
.use-cases {
    background: var(--bg-secondary);
}

.use-case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.use-case-card {
    padding: 32px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.use-case-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.use-case-card p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Security Badge */
.security-badge {
    padding: 80px 0;
    background: var(--bg);
}

.badge-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 48px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.badge-text h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 4px;
}

.badge-text p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Pricing */
.pricing {
    background: var(--bg);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.pricing-card {
    padding: 32px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    position: relative;
}

.pricing-card.featured {
    border-color: var(--primary);
    border-width: 2px;
}

.pricing-card .badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.pricing-header {
    margin-bottom: 24px;
}

.pricing-header h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
}

.price {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.price .amount {
    font-size: 48px;
    font-weight: 700;
}

.price .period {
    font-size: 16px;
    color: var(--text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 24px;
}

.pricing-features li {
    padding: 12px 0;
    font-size: 15px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* CTA */
.cta {
    padding: 120px 0;
    text-align: center;
    background: var(--bg-secondary);
}

.cta h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta p {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background: var(--bg);
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.footer-logo img {
    height: 24px;
    width: auto;
}

.footer-col p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.2s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 48px;
    }
    
    .platform-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .section-header h2 {
        font-size: 32px;
    }
    
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .use-case-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}