:root {
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --border-color: #e5e5e5;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-tertiary: #9ca3af;
    --accent: #000000;
    --accent-hover: #333333;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: #e5e5e5;
    color: #000;
}

.container {
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.15s ease;
}

/* Navigation */
.navbar {
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 38px;
    height: 38px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 6px;
    transition: all 0.15s ease;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--accent);
    color: #ffffff;
    border: 1px solid var(--accent);
}

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

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

.btn-outline:hover {
    background-color: var(--bg-secondary);
    border-color: #d1d5db;
}

.nav-cta {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Hero Section */
.hero {
    padding: 8rem 0 5rem;
    max-width: 760px;
}

.hero-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 2rem;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    line-height: 1.5;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

/* Features */
.features {
    padding: 5rem 0;
    border-top: 1px solid var(--border-color);
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    display: flex;
    flex-direction: column;
}

.feature-icon {
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* How It Works */
.how-it-works {
    padding: 5rem 0;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

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

.steps-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.step-content {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.step-num {
    color: var(--text-tertiary);
    font-family: monospace;
    font-size: 1rem;
    font-weight: 600;
    padding-top: 0.25rem;
}

.steps-list strong {
    font-size: 1.125rem;
    font-weight: 600;
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.steps-list p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.5;
}

/* Call to Action Bottom */
.cta-bottom {
    padding: 6rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.cta-bottom h2 {
    font-size: 2.25rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.cta-bottom p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

/* Footer */
.footer {
    padding: 2.5rem 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-logo {
    width: 20px;
    height: 20px;
    filter: grayscale(1);
    opacity: 0.5;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 5rem 0 4rem;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
}