body {
    margin: 0;
    font-family: "Hiragino Maru Gothic ProN", "Yu Gothic", sans-serif;
    color: #4f3f2f;
    background-color: #bfeec8;
    background-image:
        radial-gradient(circle at 20px 20px, rgba(255,255,255,0.35) 3px, transparent 4px),
        radial-gradient(circle at 80px 60px, rgba(255,255,255,0.25) 2px, transparent 3px);
    background-size: 120px 120px;
}

header {
    padding: 22px 32px;
    background: linear-gradient(135deg, #7bd389, #58c7c2);
    color: white;
    border-bottom: 6px solid #f6d365;
    text-align: center;
}

header h1 {
    margin: 0 0 12px;
    font-size: 28px;
    letter-spacing: 0.08em;
    text-shadow: 2px 2px 0 rgba(0,0,0,0.12);
}

nav a {
    display: inline-block;
    margin: 6px;
    padding: 8px 16px;
    color: #4f3f2f;
    background-color: #fff7c7;
    border: 3px solid #ffffff;
    border-radius: 999px;
    text-decoration: none;
    font-weight: bold;
    box-shadow: 0 4px 0 rgba(92, 150, 100, 0.25);
}

nav a:hover {
    transform: translateY(2px);
    box-shadow: 0 2px 0 rgba(92, 150, 100, 0.25);
}

main {
    max-width: 920px;
    margin: 0 auto;
    padding: 48px 24px;
}

.hero {
    position: relative;
    padding: 48px;
    background: #fff8dc;
    border: 6px solid #ffffff;
    border-radius: 36px;
    box-shadow: 0 10px 0 rgba(104, 169, 112, 0.25);
    text-align: center;
}

.hero::before {
    content: "🌱";
    position: absolute;
    top: -22px;
    left: 32px;
    font-size: 40px;
}

.hero::after {
    content: "🌼";
    position: absolute;
    right: 32px;
    bottom: -24px;
    font-size: 44px;
}

.hero h2 {
    margin-top: 0;
    font-size: 32px;
    color: #5b8f5a;
}

.hero p {
    font-size: 16px;
    line-height: 1.8;
}

.card {
    margin-bottom: 24px;
    padding: 28px;
    background: #ffffff;
    border: 5px solid #d8f3dc;
    border-radius: 28px;
    box-shadow: 0 8px 0 rgba(104, 169, 112, 0.2);
}

.card h3 {
    margin-top: 0;
    color: #3f8f70;
    font-size: 22px;
}

.card p {
    line-height: 1.7;
}

.button {
    display: inline-block;
    margin-top: 20px;
    padding: 14px 28px;
    color: #6b4f2a;
    background: linear-gradient(180deg, #ffe66d, #ffc857);
    border: 4px solid #ffffff;
    border-radius: 999px;
    text-decoration: none;
    font-weight: bold;
    box-shadow: 0 6px 0 #d9a441;
}

.button:hover {
    transform: translateY(3px);
    box-shadow: 0 3px 0 #d9a441;
}

footer {
    margin-top: 40px;
    padding: 28px;
    text-align: center;
    color: #4f3f2f;
    background-color: rgba(255, 255, 255, 0.45);
    border-top: 4px dashed #ffffff;
}