/* 基本リセット */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    line-height: 1.8;
    color: #333;
    background-color: #f5f5f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ヘッダー */
header {
    background-color: #2c5530;
    color: #fff;
    padding: 1rem 2rem;
}

header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

header .subtitle {
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    opacity: 0.9;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

nav a {
    color: #fff;
    text-decoration: none;
}

nav a:hover {
    text-decoration: underline;
}

/* メインコンテンツ */
main {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1rem;
    flex: 1;
    width: 100%;
}

section {
    background-color: #fff;
    padding: 2rem;
    margin-bottom: 1.5rem;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

section h2 {
    color: #2c5530;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #2c5530;
}

section h3 {
    color: #2c5530;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

section h3:first-of-type {
    margin-top: 0.5rem;
}

section p {
    margin-bottom: 1rem;
}

section ul {
    margin-left: 1.5rem;
}

section li {
    margin-bottom: 0.5rem;
}

/* フォーム */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.form-group .required {
    color: #c00;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
    line-height: 1.5rem;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2c5530;
    box-shadow: 0 0 3px rgba(44, 85, 48, 0.3);
}

.form-group button {
    background-color: #2c5530;
    color: #fff;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
}

.form-group button:hover {
    background-color: #1e3d22;
}

.form-submit {
    text-align: right;
}

.privacy-notice {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 1.5rem;
}

/* 本文内リンク */
section a {
    color: #2c5530;
}

section a:hover {
    text-decoration: none;
}

/* 戻るリンク */
.back-link {
    margin-top: 2rem;
    text-align: center;
}

.back-link a {
    display: inline-block;
    padding: 0.75rem 2rem;
    background-color: #2c5530;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
}

.back-link a:hover {
    background-color: #1e3d22;
}

/* フッター */
footer {
    text-align: center;
    padding: 1.5rem;
    background-color: #333;
    color: #fff;
    margin-top: auto;
}

/* レスポンシブ */
@media (max-width: 600px) {
    header {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.2rem;
    }

    nav ul {
        gap: 1rem;
    }

    section {
        padding: 1.5rem;
    }
}