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

body {
    font-family: 'Lato', sans-serif;
    background-color: #F7FAF8;
    color: #334238;
    line-height: 1.7;
    font-size: 16px;
}

h1, h2, h3 {
    font-family: 'Montserrat', sans-serif;
    color: #4CAF50;
}

a {
    color: #4CAF50;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #5A7D5A;
}

.content-wrap {
    max-width: 850px;
    margin: 0 auto;
    padding: 0 20px;
}

.page-header {
    background-color: #ffffff;
    padding: 30px 0;
    box-shadow: 0 2px 8px rgba(90, 125, 90, 0.08);
    margin-bottom: 40px;
}

.site-title {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.main-container {
    padding: 20px 0 60px;
}

.nav-menu {
    background-color: #E8F5E9;
    padding: 20px 25px;
    border-radius: 8px;
    margin-bottom: 40px;
    border: 1px solid rgba(76, 175, 80, 0.15);
}

.nav-menu summary {
    font-weight: 700;
    font-size: 18px;
    color: #4CAF50;
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
}

.nav-menu summary::-webkit-details-marker {
    display: none;
}

.nav-menu summary::before {
    content: '▶';
    margin-right: 10px;
    transition: transform 0.3s ease;
    display: inline-block;
}

.nav-menu[open] summary::before {
    transform: rotate(90deg);
}

.nav-menu ul {
    list-style: none;
    margin-top: 20px;
    padding-left: 0;
}

.nav-menu ul li {
    padding: 8px 0;
    border-bottom: 1px solid rgba(76, 175, 80, 0.1);
}

.nav-menu ul li:last-child {
    border-bottom: none;
}

.nav-menu ul li a {
    font-weight: 400;
}

.primary-content {
    margin-bottom: 50px;
    background-color: #ffffff;
    padding: 40px 35px;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(90, 125, 90, 0.06);
}

.tips-section {
    background-color: #E8F5E9;
    padding: 45px 35px;
    border-radius: 12px;
    margin-bottom: 50px;
    border: 1px solid rgba(76, 175, 80, 0.15);
}

.section-heading {
    font-size: 28px;
    margin-bottom: 30px;
    font-weight: 700;
    text-align: center;
}

.tips-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.tip-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    background-color: #ffffff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 1px 8px rgba(90, 125, 90, 0.08);
}

.tip-icon {
    font-size: 36px;
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tip-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: #5A7D5A;
}

.tip-content p {
    font-size: 15px;
    color: #334238;
    line-height: 1.6;
}

.plant-gallery {
    margin-bottom: 50px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(90, 125, 90, 0.12);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 20px rgba(90, 125, 90, 0.18);
}

.gallery-item:nth-child(4),
.gallery-item:nth-child(5) {
    grid-column: span 1;
}

.gallery-item:nth-child(4) {
    grid-column: 1 / 3;
}

.gallery-item:nth-child(5) {
    grid-column: 3 / 4;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(51, 66, 56, 0.9), transparent);
    color: #ffffff;
    padding: 15px;
    font-weight: 600;
    font-size: 15px;
}

.page-footer {
    background-color: #ffffff;
    padding: 35px 0;
    text-align: center;
    box-shadow: 0 -2px 8px rgba(90, 125, 90, 0.08);
    margin-top: 40px;
}

.page-footer p {
    margin-bottom: 10px;
    font-size: 15px;
}

.copyright {
    color: #5A7D5A;
    font-size: 14px;
}

@media (max-width: 768px) {
    .content-wrap {
        padding: 0 15px;
    }

    .site-title {
        font-size: 26px;
    }

    .section-heading {
        font-size: 24px;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .gallery-item:nth-child(4),
    .gallery-item:nth-child(5) {
        grid-column: span 1;
    }

    .tip-item {
        flex-direction: column;
        gap: 15px;
    }

    .primary-content {
        padding: 25px 20px;
    }

    .tips-section {
        padding: 30px 20px;
    }
}