:root {
    --primary: #4F46E5;
    --primary-light: #818CF8;
    --bg: #0F172A;
    --bg-card: #1E293B;
    --text: #F8FAFC;
    --text-muted: #94A3B8;
    --accent: #22D3EE;
    --radius: 12px;
}

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

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

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.nav-logo {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

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

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

/* Hero */
.hero {
    text-align: center;
    padding: 4rem 2rem 6rem;
    max-width: 800px;
    margin: 0 auto;
}

.hero-logo {
    width: 96px;
    height: 96px;
    border-radius: 20px;
    margin-bottom: 1.5rem;
    box-shadow: 0 20px 40px rgba(79, 70, 229, 0.3);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-badges {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.badge {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-size: 0.85rem;
    color: var(--accent);
}

/* Features */
.features {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.features h2,
.how-it-works h2,
.cta h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius);
    padding: 2rem;
    transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
    transform: translateY(-2px);
    border-color: rgba(79, 70, 229, 0.3);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* How It Works */
.how-it-works {
    max-width: 900px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.step {
    text-align: center;
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.step h3 {
    margin-bottom: 0.5rem;
}

.step p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* CTA / Use Cases */
.cta {
    max-width: 800px;
    margin: 0 auto;
    padding: 4rem 2rem;
    text-align: center;
}

.use-cases {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

.use-cases span {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius);
    font-size: 0.95rem;
}

/* Privacy First */
.privacy-first {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 2rem 4rem;
    text-align: center;
}

.privacy-first p {
    color: var(--text-muted);
    line-height: 1.7;
    font-size: 1.05rem;
}

/* Footer */
footer {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 4rem;
    padding: 3rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.footer-logo {
    width: 28px;
    height: 28px;
    border-radius: 6px;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.copyright {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1.05rem;
    }

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

    nav {
        flex-direction: column;
        gap: 1rem;
    }
}