:root {
    --color-text: #1a1a1a;
    --color-text-muted: #666;
    --color-link: #1a1a1a;
    --color-bg: #fff;
    --color-divider: #1a1a1a;
    --max-width: 540px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 60px 24px 100px;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 60px;
}

h1 {
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 42px;
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.tagline {
    color: var(--color-text-muted);
    font-size: 15px;
    max-width: 400px;
    margin: 0 auto;
}

/* Sections */
section {
    margin-bottom: 50px;
}

/* Dividers */
.divider {
    width: 40px;
    height: 1px;
    background: var(--color-divider);
    margin: 0 auto 40px;
}

header .divider {
    margin-bottom: 30px;
}

section .divider,
footer .divider {
    margin: 0 0 30px 0;
}

/* Typography */
h2 {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

h3 {
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    font-weight: 600;
    margin-top: 28px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

p {
    margin-bottom: 16px;
}

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

.highlight {
    background: #f5f5f5;
    padding: 2px 2px;
    border-radius: 3px;
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
}

strong {
    font-weight: 600;
}

em {
    font-style: italic;
}

/* Links */
a {
    color: var(--color-link);
    text-decoration: underline;
    text-underline-offset: 2px;
}

a:hover {
    text-decoration: none;
}

/* Lists */
ul, ol {
    margin: 16px 0;
    padding-left: 20px;
}

li {
    margin-bottom: 8px;
}

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

/* Illustration */
.illustration {
    margin: 32px 0;
    padding: 24px;
    background: #fafafa;
    border-radius: 4px;
}

.illustration svg {
    width: 100%;
    height: auto;
    display: block;
    margin: 12px 0 -8px 16px;
}

.illustration .label {
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    fill: #1a1a1a;
}

.illustration .label-bold {
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    font-weight: 600;
    fill: #1a1a1a;
}

.illustration .label-muted {
    font-family: 'Inter', sans-serif;
    font-size: 10px;
    fill: #999;
}

.illustration figcaption {
    text-align: center;
    font-size: 13px;
    color: var(--color-text-muted);
    margin-top: 16px;
}

/* Button */
.cta {
    margin-top: 30px;
}

.button {
    display: inline-block;
    background: var(--color-text);
    color: #fff;
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: opacity 0.2s;
}

.button:hover {
    opacity: 0.85;
    text-decoration: none;
}

/* Footer */
footer {
    margin-top: 60px;
}

.disclaimer {
    color: var(--color-text-muted);
    font-size: 14px;
}

.closing {
    margin-top: 24px;
}

.attribution {
    margin-top: 32px;
    font-size: 13px;
    color: var(--color-text-muted);
}

/* Responsive */
@media (max-width: 480px) {
    main {
        padding: 40px 20px 80px;
    }

    h1 {
        font-size: 32px;
    }

    .illustration {
        padding: 14px;
    }
}