:root {
    /* Primary Colors for a serious, protective, and energetic feel */
    --color-primary: #004d99; /* Deep Blue for Protection/Trust */
    --color-secondary: #ff6347; /* Tomato Red/Orange for Urgency/Action */
    --color-accent: #3cb371; /* Medium Sea Green for Growth/Future */
    --color-text: #333;
    --color-background: #f4f4f9;
    --color-light: #fff;

    /* Typography */
    --font-heading: 'Helvetica Neue', Arial, sans-serif;
    --font-body: 'Arial', sans-serif;
}

/* Base Reset & Typography */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    padding-top: 80px; /* Space for fixed header */
}

/* Container */
.container {
    max-width: 1100px;
    margin: auto;
    overflow: hidden;
    padding: 0 20px;
}

/* --- Header & Navigation --- */
header {
    background: var(--color-primary);
    color: var(--color-light);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo a {
    color: var(--color-light);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 1px;
}

nav ul {
    list-style: none;
    display: flex;
}

nav ul li a {
    color: var(--color-light);
    text-decoration: none;
    padding: 0 15px;
    transition: color 0.3s ease;
    font-weight: 500;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--color-secondary);
}

/* --- Main Content Section --- */
section {
    padding: 60px 0;
}

h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--color-primary);
    margin-bottom: 20px;
    line-height: 1.2;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    position: relative;
    padding-bottom: 10px;
    margin-bottom: 40px;
}

h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--color-secondary);
    margin: 10px auto 0;
}

/* Specific component styling */
.hero {
    background: url('placeholder-hero.jpg') no-repeat center center/cover;
    height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--color-light);
    position: relative;
    margin-bottom: 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 10px;
    color: var(--color-light);
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    background: var(--color-secondary);
    color: var(--color-light);
    padding: 10px 25px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background 0.3s ease;
}

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

.feature-grid, .data-stats, .mission-list {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 30px;
}

.feature-item, .stat-item, .mission-item {
    flex: 1 1 300px;
    background: var(--color-light);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.feature-item:hover, .stat-item:hover {
    transform: translateY(-5px);
}

.stat-item h3 {
    font-size: 3rem;
    color: var(--color-secondary);
    margin-bottom: 5px;
}

.mission-list {
    flex-direction: column;
}

.mission-item {
    border-left: 5px solid var(--color-accent);
}


/* --- Footer --- */
footer {
    background: var(--color-primary);
    color: var(--color-light);
    text-align: center;
    padding: 30px 0;
    margin-top: 20px;
}

/* --- Responsiveness (Basic Mobile Support) --- */
@media (max-width: 768px) {
    body {
        padding-top: 60px;
    }
    header .container {
        flex-direction: column;
        text-align: center;
    }
    nav ul {
        margin-top: 10px;
        justify-content: center;
    }
    nav ul li a {
        padding: 0 8px;
        font-size: 0.9rem;
    }
    .hero {
        height: 50vh;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    .hero p {
        font-size: 1.2rem;
    }
    .feature-grid, .data-stats {
        flex-direction: column;
    }
}