/* Custom Variable untuk Warna Tema Karet */
:root {
    --primary-green: #2d5a27;
    --accent-green: #4caf50;
    --earth-brown: #4e342e;
    --light-gray: #f4f7f6;
    --dark-text: #333;
}

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

body {
    font-family: 'Lato', sans-serif;
    color: var(--dark-text);
    line-height: 1.6;
    background-color: white;
}

/* Header & Hero Section */
.hero {
    background: url('https://images.unsplash.com/photo-1598902108854-10e335adac99?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80'); /* Gambar Perkebunan/Pohon Karet */
    background-size: cover;
    background-position: center;
    height: 80vh;
    position: relative;
    color: white;
}

.hero-overlay {
    background: rgba(0, 0, 0, 0.5);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.nav-container {
    padding: 20px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 2px;
}

.logo span {
    color: var(--accent-green);
}

.hero-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    max-width: 800px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 600px;
}

/* Buttons */
.btn-primary {
    background-color: var(--accent-green);
    color: white;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    margin-right: 15px;
    transition: 0.3s;
}

.btn-secondary {
    border: 2px solid white;
    color: white;
    padding: 10px 30px;
    border-radius: 5px;
    text-decoration: none;
    transition: 0.3s;
}

.btn-primary:hover { background-color: var(--primary-green); }
.btn-secondary:hover { background: white; color: var(--primary-green); }

/* Features Section */
.features {
    padding: 80px 20px;
    background-color: var(--light-gray);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.line {
    width: 60px;
    height: 4px;
    background: var(--accent-green);
    margin: 10px auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: auto;
}

.feature-card {
    background: white;
    padding: 40px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

/* Footer */
.footer-modern {
    background: var(--earth-brown);
    color: rgba(255,255,255,0.7);
    padding: 40px 20px;
    text-align: center;
}

@media (max-width: 768px) {
    .hero-content h1 { font-size: 2rem; }
}