/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0066CC;
    --primary-dark: #0051D5;
    --text-color: #1d1d1f;
    --text-secondary: #6e6e73;
    --bg-light: #f5f5f7;
    --bg-white: #ffffff;
    --border-color: #d2d2d7;
    --link-color: #0066CC;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'SF Pro Display', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.47059;
    color: var(--text-color);
    background-color: var(--bg-white);
    font-size: 17px;
    font-weight: 400;
    letter-spacing: -0.022em;
}

.container {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 22px;
}

/* Navigation */
.nav {
    background-color: rgba(251, 251, 253, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    position: sticky;
    top: 0;
    z-index: 9999;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0;
    height: 44px;
}

.logo {
    font-size: 21px;
    font-weight: 600;
    color: var(--text-color);
    letter-spacing: 0;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
    margin: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 12px;
    font-weight: 400;
    opacity: 0.88;
    transition: opacity 0.3s;
    letter-spacing: 0;
}

.nav-links a:hover {
    opacity: 1;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 88px 22px 88px;
    background: linear-gradient(180deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
}

.hero h1 {
    font-size: 56px;
    font-weight: 600;
    margin-bottom: 16px;
    line-height: 1.07143;
    letter-spacing: -0.005em;
    color: white;
}

.subtitle {
    font-size: 28px;
    font-weight: 400;
    line-height: 1.14286;
    letter-spacing: 0.007em;
    margin-bottom: 32px;
    color: rgba(255, 255, 255, 0.92);
}

.cta-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-note {
    margin-top: 16px;
    font-size: 14px;
    line-height: 1.42859;
    font-weight: 400;
    letter-spacing: -0.016em;
    color: rgba(255, 255, 255, 0.8);
}

.btn {
    display: inline-block;
    padding: 12px 22px;
    border-radius: 980px;
    text-decoration: none;
    font-weight: 400;
    font-size: 17px;
    line-height: 1.17648;
    letter-spacing: -0.022em;
    transition: all 0.2s ease;
    text-align: center;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background-color: rgba(255, 255, 255, 0.92);
}

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

.hero .btn-primary:hover {
    background-color: rgba(255, 255, 255, 0.92);
}

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

.cta .btn-primary:hover {
    background-color: #0077ED;
}

/* Features Section */
.features {
    padding: 72px 22px 88px;
    background-color: var(--bg-white);
}

.features h2 {
    text-align: center;
    font-size: 48px;
    font-weight: 600;
    line-height: 1.08349;
    letter-spacing: -0.003em;
    margin-bottom: 48px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.feature {
    text-align: left;
    padding: 44px 32px;
    border-radius: 18px;
    background-color: var(--bg-light);
    transition: background-color 0.2s ease;
}

.feature:hover {
    background-color: #ebebed;
}

.feature-icon {
    font-size: 56px;
    margin-bottom: 24px;
    display: block;
}

.feature h3 {
    font-size: 24px;
    font-weight: 600;
    line-height: 1.16667;
    letter-spacing: 0.009em;
    margin-bottom: 12px;
}

.feature p {
    color: var(--text-secondary);
    line-height: 1.47059;
    letter-spacing: -0.022em;
    font-size: 17px;
}

/* Perfect For Section */
.perfect-for {
    padding: 72px 22px 88px;
    background-color: var(--bg-light);
    text-align: center;
}

.perfect-for h2 {
    font-size: 40px;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: 0;
    margin-bottom: 32px;
}

.audience-list {
    list-style: none;
    max-width: 692px;
    margin: 0 auto;
    text-align: left;
}

.audience-list li {
    padding: 20px 24px;
    margin-bottom: 12px;
    background-color: var(--bg-white);
    border-radius: 12px;
    font-size: 17px;
    line-height: 1.47059;
    letter-spacing: -0.022em;
    transition: background-color 0.2s ease;
}

.audience-list li:hover {
    background-color: #fafafa;
}

/* CTA Section */
.cta {
    padding: 88px 22px;
    text-align: center;
    background: var(--bg-light);
    color: var(--text-color);
}

.cta h2 {
    font-size: 48px;
    font-weight: 600;
    line-height: 1.08349;
    letter-spacing: -0.003em;
    margin-bottom: 16px;
}

.cta p {
    font-size: 21px;
    line-height: 1.381;
    font-weight: 400;
    letter-spacing: 0.011em;
    margin-bottom: 28px;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background-color: #f5f5f7;
    color: var(--text-secondary);
    padding: 17px 0 21px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.footer-section h3 {
    font-size: 12px;
    font-weight: 600;
    line-height: 1.33337;
    letter-spacing: -0.01em;
    margin-bottom: 8px;
    color: var(--text-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 12px;
    line-height: 1.33337;
    font-weight: 400;
    letter-spacing: -0.01em;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    text-align: left;
    padding-top: 8px;
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.33337;
    font-weight: 400;
    letter-spacing: -0.01em;
}

/* Page Content (for Privacy, Terms, Support) */
.page-content {
    max-width: 692px;
    margin: 0 auto;
    padding: 88px 22px 128px;
}

.page-content h1 {
    font-size: 48px;
    font-weight: 600;
    line-height: 1.08349;
    letter-spacing: -0.003em;
    margin-bottom: 8px;
}

.updated {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.42859;
    font-weight: 400;
    letter-spacing: -0.016em;
    margin-bottom: 48px;
}

.page-content section {
    margin-bottom: 48px;
}

.page-content h2 {
    font-size: 32px;
    font-weight: 600;
    line-height: 1.125;
    letter-spacing: 0.004em;
    margin-top: 48px;
    margin-bottom: 16px;
    color: var(--text-color);
}

.page-content h3 {
    font-size: 24px;
    font-weight: 600;
    line-height: 1.16667;
    letter-spacing: 0.009em;
    margin-top: 32px;
    margin-bottom: 12px;
}

.page-content h4 {
    font-size: 19px;
    font-weight: 600;
    line-height: 1.21053;
    letter-spacing: 0.012em;
    margin-top: 24px;
    margin-bottom: 8px;
}

.page-content p {
    margin-bottom: 16px;
    color: var(--text-color);
    line-height: 1.47059;
    font-size: 17px;
    letter-spacing: -0.022em;
}

.page-content ul, .page-content ol {
    margin-left: 32px;
    margin-bottom: 16px;
}

.page-content li {
    margin-bottom: 8px;
    color: var(--text-color);
    line-height: 1.47059;
    font-size: 17px;
    letter-spacing: -0.022em;
}

.page-content a {
    color: var(--link-color);
    text-decoration: none;
}

.page-content a:hover {
    text-decoration: underline;
}

.page-content strong {
    font-weight: 600;
}

/* FAQ Styling */
.faq {
    margin-bottom: 32px;
}

.faq h3 {
    background-color: var(--bg-light);
    padding: 20px 24px;
    border-radius: 12px;
    margin-bottom: 16px;
    font-size: 21px;
    font-weight: 600;
    line-height: 1.381;
    letter-spacing: 0.011em;
}

.faq h4 {
    color: var(--text-color);
    font-size: 19px;
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 1068px) {
    .container {
        max-width: 692px;
    }

    .hero h1 {
        font-size: 44px;
    }

    .subtitle {
        font-size: 24px;
    }
}

@media (max-width: 735px) {
    .container {
        padding: 0 16px;
    }

    .nav-links {
        gap: 20px;
        font-size: 11px;
    }

    .hero {
        padding: 56px 16px 40px;
    }

    .hero h1 {
        font-size: 32px;
        line-height: 1.125;
        letter-spacing: 0.004em;
    }

    .subtitle {
        font-size: 19px;
        line-height: 1.21053;
        letter-spacing: 0.012em;
    }

    .features h2, .perfect-for h2, .cta h2 {
        font-size: 32px;
        line-height: 1.125;
        letter-spacing: 0.004em;
    }

    .page-content h1 {
        font-size: 32px;
        line-height: 1.125;
        letter-spacing: 0.004em;
    }

    .page-content h2 {
        font-size: 24px;
        line-height: 1.16667;
        letter-spacing: 0.009em;
    }

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

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

    .features, .perfect-for, .cta {
        padding: 56px 16px 72px;
    }

    .page-content {
        padding: 56px 16px 88px;
    }
}

@media (max-width: 480px) {
    .nav-links {
        display: none;
    }

    .logo {
        font-size: 18px;
    }

    .hero h1 {
        font-size: 28px;
    }

    .subtitle {
        font-size: 17px;
    }
}