body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background: #e8f5e9;
    color: #1b3e2f;
    line-height: 1.9;
}
.sticky-header {
    background: #2e7d32;
    color: white;
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}
.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 0 2rem;
}
.header-container nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}
.header-container a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}
section {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
h2 {
    color: #f9a825;
    border-bottom: 2px solid #c8e6c9;
    padding-bottom: 0.5rem;
}
ul, ol {
    padding-left: 2rem;
}
.btn {
    background: #fbc02d;
    color: #1b3e2f;
    padding: 0.8rem 1.6rem;
    text-decoration: none;
    border-radius: 10px;
    display: inline-block;
    font-weight: bold;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}
th, td {
    border: 1px solid #c8e6c9;
    padding: 0.8rem;
    text-align: left;
}
form {
    display: grid;
    gap: 1.2rem;
    max-width: 400px;
}
input, button {
    padding: 0.8rem;
    border: 1px solid #c8e6c9;
    border-radius: 10px;
}
.footer {
    background: #1b3e2f;
    color: white;
    text-align: center;
    padding: 1.5rem;
}
.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}
.footer ul {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 2rem;
    padding: 0;
}
.footer a {
    color: white;
    text-decoration: none;
}
@media (max-width: 768px) {
    .header-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .header-container nav ul {
        flex-direction: column;
        gap: 1rem;
    }
    .grid-container {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }
}