/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --text-secondary: #333;
    --text-tertiary: #666;
    --text-quaternary: #999;
    --border-color: #e0e0e0;
    --btn-bg: #1a1a1a;
    --btn-text: #ffffff;
    --btn-hover: #333;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #1a1a1a;
        --text-color: #e5e5e5;
        --text-secondary: #b3b3b3;
        --text-tertiary: #999;
        --text-quaternary: #666;
        --border-color: #333;
        --btn-bg: #e5e5e5;
        --btn-text: #1a1a1a;
        --btn-hover: #ffffff;
    }
    
    .image-container {
        border-color: rgba(255, 255, 255, 0.1);
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1 {
    font-size: 2.5rem;
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.75rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1.25rem;
    line-height: 1.7;
}

.emphasis {
    font-weight: 500;
    margin-top: 1.5rem;
}

/* Layout */
section {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

.hero {
    padding-top: 6rem;
    padding-bottom: 6rem;
    text-align: center;
}

.subhead {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.content-section {
    padding-top: 4rem;
    padding-bottom: 4rem;
}

/* Buttons and links */
.hero-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.btn-primary {
    display: inline-block;
    padding: 0.875rem 2rem;
    background-color: var(--btn-bg);
    color: var(--btn-text);
    text-decoration: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    transition: background-color 0.2s ease;
}

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

.link-secondary {
    color: var(--text-tertiary);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.2s ease;
}

.link-secondary:hover {
    color: var(--text-color);
}

/* Lists */
ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

li {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
}

li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--text-color);
}

.avoid-list li,
.features-list li,
.platform-list li,
.philosophy-list li {
    line-height: 1.6;
}

/* Divider */
.divider {
    max-width: 800px;
    margin: 0 auto;
    height: 1px;
    background-color: var(--border-color);
    border: none;
}

/* Image container */
.image-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.content-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* Footer */
footer {
    max-width: 800px;
    margin: 0 auto;
    padding: 5rem 1.5rem 3rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: 2rem;
}

footer h3 {
    margin-bottom: 0.5rem;
}

footer p {
    margin-bottom: 2rem;
    color: var(--text-tertiary);
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--text-quaternary);
    margin-top: 2.5rem;
    margin-bottom: 0;
}

/* Responsive */
@media (max-width: 900px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    section {
        padding: 3rem 1.25rem;
    }
    
    .hero {
        padding-top: 4rem;
        padding-bottom: 4rem;
    }
    
    .content-section {
        padding-top: 4rem;
        padding-bottom: 4rem;
    }
    
    body {
        font-size: 16px;
    }
}

/* Hero icon */
.hero-icon {
    margin-bottom: 2rem;
    opacity: 0.9;
}