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

:root {
    --max-width: 1200px;
    --content-width: 800px;
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --muted-color: #6b7280;
    --link-color: #000000;
    --divider-color: #e5e7eb;
    --callout-bg: #f9fafb;
    --callout-border: #d1d5db;
    --highlight-bg: #f3f4f6;
    --hero-bg: #000000;
    
    --font-base: 'Arial', 'Arial', Arial, sans-serif;
    --font-size-base: 17px;
    --line-height: 1.6;
    --font-size-h1: 44px;
    --font-size-h2: 28px;
    --font-size-h3: 20px;
}

body {
    font-family: var(--font-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--text-color);
    background-color: var(--bg-color);
    margin: 0;
    padding: 0;
    letter-spacing: -0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.page-container {
    width: 100%;
}

.paper {
    width: 100%;
}

.header {
    background-color: var(--hero-bg);
    color: #ffffff;
    padding: 56px 24px;
    text-align: center;
    border-bottom: 1px solid #1f2937;
}

.header h1 {
    font-size: var(--font-size-h1);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 16px;
    color: #ffffff;
    letter-spacing: -0.5px;
}

.header .subtitle {
    font-size: 24px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
    margin: 0;
}

.content {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 48px 24px;
}

h1 {
    font-size: var(--font-size-h1);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-color);
    letter-spacing: -0.5px;
}

.content h2 {
    font-size: var(--font-size-h2);
    font-weight: 600;
    line-height: 1.25;
    margin-top: 30px;
    margin-bottom: 16px;
    color: var(--text-color);
    letter-spacing: -0.02em;
}

h2:first-child {
    margin-top: 0;
}

.content h3 {
    font-size: var(--font-size-h3);
    font-weight: 600;
    line-height: 1.3;
    margin-top: 32px;
    margin-bottom: 12px;
    color: var(--text-color);
    letter-spacing: -0.01em;
}

.subtitle {
    font-size: 24px;
    margin-bottom: 0;
}

.muted {
    color: var(--muted-color);
}

p {
    margin-bottom: 12px;
    font-size: var(--font-size-base);
}

p:last-child {
    margin-bottom: 0;
}

p + p {
    margin-top: 0;
}

.divider {
    height: 1px;
    background-color: var(--divider-color);
    border: none;
    margin: 32px 0;
    max-width: auto;
    margin-left: auto;
    margin-right: auto;
}

.callout {
    background-color: var(--callout-bg);
    border-left: 2px solid var(--callout-border);
    padding: 20px 24px;
    margin: 28px 0;
    font-size: 16px;
    line-height: 1.5;
    border-radius: 0;
}

.callout strong {
    display: block;
    margin-bottom: 4px;
    font-size: 18px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.callout .price {
    display: block;
    font-size: 24px;
    font-weight: 700;
    line-height: 1;
    margin: 8px 0 8px 0;
    color: #000000;
    letter-spacing: -0.02em;
}

.highlight {
    background-color: var(--highlight-bg);
    padding: 2px 4px;
    border-radius: 0;
    font-weight: 600;
    border-bottom: 2px solid #d1d5db;
}

a {
    color: var(--link-color);
    text-decoration: none;
    transition: text-decoration 0.2s ease;
}

a:hover {
    text-decoration: underline;
}

ul, ol {
    margin: 0px 0 8px 0;
    padding-left: 32px;
}

li {
    margin-bottom: 0px;
    font-size: 17px;
}

li:last-child {
    margin-bottom: 0;
}

.footer {
    background-color: #111827;
    padding: 80px 24px;
    margin-top: 80px;
    border-top: 1px solid #1f2937;
}

.cta {
    text-align: center;
    max-width: var(--content-width);
    margin: 0 auto;
}

.cta h3 {
    margin-top: 0;
    margin-bottom: 16px;
    font-size: 36px;
    color: #ffffff;
}

.cta p {
    margin-bottom: 32px;
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
}

.btn-primary {
    display: inline-block;
    padding: 16px 48px;
    background-color: #ffffff;
    color: #000000;
    font-weight: 600;
    font-size: 16px;
    border-radius: 2px;
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid #e5e7eb;
}

.btn-primary:hover {
    background-color: #000000;
    color: #ffffff;
    border-color: #000000;
    text-decoration: none;
}

.btn-secondary {
    display: inline-block;
    padding: 14px 40px;
    background-color: #000000;
    color: #ffffff;
    font-weight: 600;
    font-size: 15px;
    border-radius: 2px;
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid #000000;
}

.btn-secondary:hover {
    background-color: #1f2937;
    border-color: #1f2937;
    text-decoration: none;
}

.btn-outline {
    display: inline-block;
    padding: 14px 36px;
    background-color: transparent;
    color: #000000;
    font-weight: 600;
    font-size: 15px;
    border-radius: 2px;
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid #d1d5db;
}

.btn-outline:hover {
    background-color: #f9fafb;
    border-color: #9ca3af;
    text-decoration: none;
}

.cta-box {
    background-color: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 0;
    padding: 32px 24px;
    margin: 32px 0;
    text-align: center;
}

.cta-box h3 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 20px;
    font-weight: 600;
    color: #1a1a1a;
    letter-spacing: -0.01em;
}

.cta-box p {
    margin-bottom: 20px;
    font-size: 15px;
    color: #6b7280;
}

@media (max-width: 768px) {
    :root {
        --font-size-h1: 36px;
        --font-size-h2: 26px;
        --font-size-h3: 20px;
        --font-size-base: 16px;
    }
    
    .header {
        padding: 60px 20px;
    }
    
    .header h1 {
        font-size: 36px;
    }
    
    .header .subtitle {
        font-size: 18px;
    }
    
    .content {
        padding: 40px 20px;
    }
    
    .cta h3 {
        font-size: 28px;
    }
    
    .btn-primary,
    .btn-secondary,
    .btn-outline {
        width: 100%;
        max-width: 320px;
    }
    
    .callout {
        font-size: 15px;
        padding: 20px 20px;
    }
    
    .footer {
        padding: 60px 20px;
    }
    
    .cta-box {
        padding: 32px 24px;
        margin: 40px 0;
    }
    
    .cta-box h3 {
        font-size: 24px;
    }
}