:root {
    --bg-primary: #0d0d0d;
    --bg-secondary: #1a1a1a;
    --text-primary: #e6e6e6;
    --text-secondary: #a0a0a0;
    --text-heading: #f5f5f7;
    --accent: #34d97e;
    --accent-hover: #2bc770;
    --border: #2a2a2a;
    --font-primary: 'Figtree', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', system-ui, sans-serif;
}

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

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

/* Header */
.header {
    position: sticky;
    top: 0;
    background: rgba(13, 13, 13, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    padding: 16px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-heading);
    text-decoration: none;
    font-size: 18px;
    font-weight: 600;
}

.logo svg {
    color: var(--accent);
}

.nav {
    display: flex;
    gap: 32px;
}

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

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

/* Buttons */
.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: #041309;
    padding: 12px 24px;
    border-radius: 980px;
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    border: none;
    cursor: pointer;
    transition: background 0.2s;
}

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

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: 980px;
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    border: 1px solid var(--border);
    transition: border-color 0.2s, color 0.2s;
}

.btn-secondary:hover {
    border-color: var(--text-primary);
    color: var(--text-heading);
}

/* Hero */
.hero {
    padding: 120px 0 80px;
    text-align: center;
}

.hero h1 {
    font-size: 92px;
    font-weight: 600;
    color: var(--text-heading);
    line-height: 1.1;
    margin-bottom: 24px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Phase Banner */
.phase-banner {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 48px;
    margin: 80px auto;
    max-width: 900px;
}

.badge {
    display: inline-block;
    background: rgba(52, 217, 126, 0.1);
    color: var(--accent);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.phase-banner h2 {
    font-size: 48px;
    font-weight: 600;
    color: var(--text-heading);
    margin-bottom: 16px;
}

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

/* Features */
.features {
    padding: 80px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    transition: border-color 0.3s;
}

.feature-card:hover {
    border-color: rgba(52, 217, 126, 0.3);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-heading);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Beta CTA */
.beta-cta {
    padding: 80px 0;
}

.beta-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.beta-content h2 {
    font-size: 56px;
    font-weight: 600;
    color: var(--text-heading);
    margin: 16px 0;
}

.beta-content p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.device-preview {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    aspect-ratio: 16/10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.device-screen {
    width: 80%;
    height: 80%;
    background: linear-gradient(135deg, rgba(52, 217, 126, 0.1) 0%, rgba(52, 217, 126, 0.05) 100%);
    border-radius: 8px;
}

/* FAQ */
.faq {
    padding: 80px 0 120px;
}

.faq h2 {
    font-size: 56px;
    font-weight: 600;
    color: var(--text-heading);
    margin-bottom: 48px;
    text-align: center;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: opacity 0.2s;
}

.faq-item:hover {
    opacity: 0.8;
}

.faq-q {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-heading);
    text-align: left;
}

.faq-icon {
    color: var(--text-secondary);
    font-size: 14px;
    transition: transform 0.3s;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-answer.active {
    max-height: 500px;
    padding-bottom: 24px;
}

.faq-answer p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    padding: 48px 0;
}

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

.footer-logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-heading);
    text-decoration: none;
}

.footer-nav {
    display: flex;
    gap: 32px;
}

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

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

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 48px;
    }

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

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

    .phase-banner {
        padding: 32px 24px;
    }

    .phase-banner h2 {
        font-size: 32px;
    }

    .beta-content {
        grid-template-columns: 1fr;
    }

    .beta-content h2 {
        font-size: 36px;
    }

    .faq h2 {
        font-size: 36px;
    }

    .nav {
        display: none;
    }

    .footer .container {
        flex-direction: column;
        gap: 24px;
    }
}