/* --- Global Styles & Variables --- */
:root {
    --primary-color: #3a5a40; /* Deep Moss Green */
    --secondary-color: #588157; /* Lighter Fern Green */
    --accent-color: #a3b18a; /* Soft Sage */
    --text-dark: #333d29; /* Dark Olive */
    --text-light: #fefae0;
    --bg-light: #fcfcfc; /* Changed to a brighter white */
    --bg-medium: #e9ecef; /* Lighter Stone/Gray */
    --font-main: 'Montserrat', sans-serif;
}

body {
    font-family: var(--font-main);
    line-height: 1.7;
    margin: 0;
    padding: 0;
    background-color: var(--bg-light);
    color: var(--text-dark);
    font-size: 16px;
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 0 2rem;
}

h1, h2, h3 {
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; text-align: center; margin-bottom: 2.5rem; }
h3 { color: var(--primary-color); margin-top: 0;}
p { margin-bottom: 1rem; }

/* --- Header & Navigation --- */
.main-header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--bg-medium);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

.main-nav a {
    color: var(--text-dark);
    text-decoration: none;
    margin-left: 1.5rem;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: width 0.3s ease;
}

.main-nav a:hover, .main-nav a:focus {
    color: var(--secondary-