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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

/* Header */
header {
    background-color: darkgreen;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    color: #fff;
    font-size: 24px;
    font-weight: bold;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    align-items: center;
}

nav a {
    text-decoration: none;
    color: #fff;
    font-weight: 500;
    transition: color 0.3s;
    padding: 5px 0;
}

nav a:hover {
    color: #e6f7ff;
}

nav a.active {
    color: #90ee90;
    border-bottom: 2px solid #90ee90;
}

.admin-btn {
    border-radius: 5px;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
}

.admin-btn:hover {
    transform: translateY(-2px);
}

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

/* Tab Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #2d5a27, #4a8642);
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

.hero h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: #fff;
    color: #2d5a27;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn:hover {
    background-color: #f0f8f0;
    transform: translateY(-2px);
}

/* Section Styles */
section {
    padding: 80px 0;
}

section h2 {
    text-align: center;
    margin-bottom: 40px;
    color: #333;
    font-size: 32px;
}

section > .container > p {
    text-align: center;
    margin-bottom: 40px;
    color: #666;
    font-size: 16px;
}

/* Edge Computing Section */
.edge-computing {
    background-color: #f0f8f0;
}

.edge-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.feature {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

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

.feature h3 {
    color: #2d5a27;
    margin-bottom: 15px;
    font-size: 20px;
}

.edge-existing {
    background-color: #e8f5e8;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
}

.edge-existing h3 {
    color: #2d5a27;
    margin-bottom: 15px;
}

/* Download Section */
.download {
    background-color: #f0f8f0;
}

.download-links {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.download-item {
    text-align: center;
    padding: 30px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    min-width: 200px;
}

.download-item h3 {
    color: #333;
    margin-bottom: 20px;
}

/* Footer */
footer {
    background-color: #333;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info h3 {
    color: #66cc66;
    margin-bottom: 15px;
    font-size: 20px;
}

.footer-links ul {
    list-style: none;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
    line-height: 1.8;
}

.footer-links a:hover {
    color: #66cc66;
}

.footer-links a.active {
    color: #90ee90;
}

.footer-links .admin-btn {
    font-size: 16px;
}

.footer-links .admin-btn:hover {
    background-color: #555;
    color: #fff !important;
}

.footer-contact p {
    text-align: left;
    line-height: 1.8;
    color: #ccc;
}

/* Responsive Design */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }

    section {
        padding: 60px 0;
    }

    section h2 {
        font-size: 28px;
    }

    .download-links {
        flex-direction: column;
        align-items: center;
    }

    .download-item {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    section h2 {
        font-size: 24px;
    }

    .feature, .download-item {
        padding: 20px;
    }
}