/* --- Google Font Import --- */
@import url('https://fonts.googleapis.com/css2?family=Merriweather:wght@400;700&family=Poppins:wght@400;600&display=swap');

/* --- CSS Variables --- */
:root {
    --primary-color: #4A7C59; /* Forest Green */
    --secondary-color: #8B4513; /* Saddle Brown */
    --background-color: #F5F5DC; /* Beige */
    --surface-color: #FFFFFF; /* White */
    --text-color: #3D405B; /* Dark Slate Blue */
    --text-muted-color: #6c757d; /* Muted Grey */
    --border-color: #e0e0e0; /* Light Grey Border */
    --font-serif: 'Merriweather', serif;
    --font-sans: 'Poppins', sans-serif;
    --container-width: 1140px;
    --border-radius: 12px;
    --transition-speed: 0.3s ease;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

/* --- General & Reset --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    line-height: 1.8;
    background-color: var(--background-color);
    color: var(--text-color);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

h1, h2, h3, h4 {
    font-family: var(--font-serif);
    color: var(--text-color);
    line-height: 1.3;
    margin-bottom: 1rem;
    font-weight: 700;
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.6rem; }

p {
    margin-bottom: 1.5rem;
    color: var(--text-muted-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-speed);
}

a:hover {
    color: #365941; /* Darker green */
    text-decoration: underline;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
    border-radius: var(--border-radius);
}

.btn {
    display: inline-block;
    padding: 0.85rem 1.8rem;
    background-color: var(--primary-color);
    color: #fff;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background-color var(--transition-speed), color var(--transition-speed);
    text-decoration: none;
}

.btn:hover {
    background-color: #365941;
    border-color: #365941;
    color: #fff;
}

/* --- Header & Navigation --- */
.site-header {
    background: #fff;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

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

.logo {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-color);
    letter-spacing: 0.5px;
}
.logo:hover {
    text-decoration: none;
    color: var(--primary-color);
}

.main-nav ul {
    display: flex;
    gap: 2.5rem;
}

.main-nav a {
    color: var(--text-muted-color);
    font-weight: 600;
    font-size: 1rem;
    transition: color var(--transition-speed);
    padding-bottom: 5px;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary-color);
    text-decoration