:root {
    --color-primary: #3a6a2e;
    --color-primary-dark: #2c5222;
    --color-primary-light: #5a8f4a;
    --color-accent: #7ba448;
    --color-bg: #fff;
    --color-bg-alt: #f5f5f0;
    --color-surface: #fff;
    --color-text: #333;
    --color-text-light: #666;
    --color-border: #ccc;
    --color-error: #a00;
    --color-error-bg: #fdecea;

    --font-body: 'Nunito', system-ui, sans-serif;
    --font-heading: 'Merriweather', Georgia, serif;

    --header-height: auto;
    --container-width: 960px;
}

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

html {
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.65;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    line-height: 1.3;
    color: var(--color-primary-dark);
    font-weight: 700;
}

h1 { font-size: 1.8rem; margin-bottom: 0.6rem; }
h2 { font-size: 1.4rem; margin-bottom: 0.6rem; }
h3 { font-size: 1.15rem; margin-bottom: 0.4rem; }
h4 { font-size: 1rem; margin-bottom: 0.3rem; }

p { margin-bottom: 0.9rem; }

a {
    color: var(--color-primary);
    text-decoration: underline;
}

a:hover {
    color: var(--color-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    padding-left: 1.4rem;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.2rem;
}

.section {
    padding: 2rem 0;
}

.section-alt {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.text-center {
    text-align: center;
}

.page-header {
    background: var(--color-primary-dark);
    color: #fff;
    padding: 1.5rem 0;
    margin-bottom: 1.5rem;
}

.page-header h1 {
    color: #fff;
    margin-bottom: 0.2rem;
}

.page-header p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0;
}

.prose {
    max-width: 70ch;
}

.prose p {
    margin-bottom: 1rem;
}

.prose h2 {
    margin-top: 1.8rem;
    padding-bottom: 0.3rem;
    border-bottom: 1px solid var(--color-border);
}

.prose ul,
.prose ol {
    margin-bottom: 1rem;
}

@media (max-width: 640px) {
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }

    .page-header {
        padding: 1.2rem 0;
    }
}