html {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

body {
    background-color: #f0fff0;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
}

header {
    background-color: #aaffaa;
    padding: 10px;
    font-size: 24px;
    font-weight: bold;
    display: flex;
}

header h1 {
    margin: 0;
    margin-left: 20px;
    color: #006600;
}

header input {
    margin-left: auto;
    margin-top: auto;
    margin-bottom: auto;
    padding: 5px;
    font-size: 16px;
    width: 30%;
    height: 30px;
    border: 0px;
    border-radius: 5px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
    transition: box-shadow 0.3s ease;
}

input:hover {
    outline: none;
    box-shadow: 0 0 5px rgba(0, 0, 0, 1);
}

input:focus {
    outline: none;
    box-shadow: 0 0 5px rgba(0, 0, 0, 1);
}

main {
    width: 700px;
    max-width: calc(100% - 20px);
    background-color: white;
    margin: 20px auto;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    color: black;
    padding-bottom: 10px;
    flex: 1;
}

main section {
    margin-bottom: 20px;
    padding: 10px;
    border-bottom: 1px solid #ccc;
    border-radius: 10px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}

main section h2, main section h3 {
    margin:0;
    border-left: #44bb44 5px solid;
    border-bottom: #44bb44 1px solid;
    padding-left: 10px;
    margin-bottom: 10px;
}

main section p {
    margin:0px;
    line-height: 1.6;
}

a.button {
    margin: 10px;
    display: inline-block;
    padding: 10px 20px;
    background-color: #44bb44;
    color: #ffffff;
    text-decoration: none;
    border-radius: 5px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

a.button-none {
    margin: 10px;
    display: inline-block;
    padding: 10px 20px;
    background-color: #cccccc;
    color: #666666;
    text-decoration: none;
    border-radius: 5px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}

a.button:hover {
    background-color: #339933;
    box-shadow: 0 0 10px rgba(0, 0, 0, 1);
}

footer {
    background-color: #aaffaa;
    padding: 10px;
    text-align: center;
}

a {
    text-decoration: none;
}

section a {
    text-decoration: none;
    color: black;
    margin: auto 5px;
    padding: 5px;
    border-radius: 5px;
    border-bottom: 2px solid #339933;
}

ul {
    padding-left: 20px;
}

ul li {
    margin-bottom: 5px;
    list-style-type: none;
    padding: 5px;
}

/* ▽ボタン本体 */
.folder-button {
    width: calc(100% - 20px);
    background-color: #ffffff;
    color: #333;
    border: 1px solid #ccc;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 16px;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    position: relative;
    box-shadow: 0 2px 5px rgba(0,0,0,0.08);
    transition: background-color 0.2s;
    margin-top: 10px;
}

.folder-button:hover {
    background-color: #f0f4fa;
}

/* ▽マーク */
.folder-button::before {
    content: "▾";
    font-size: 24;
    margin-right: 10px;
    transition: transform 0.3s;
    display: inline-block;
}

.folder-button::after {
    transform: rotate(-180deg);
}

.content {
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    margin-left: 10px;
    background: #ffffff;
    border-left: 4px solid #339933;
    border-radius: 0 0 8px 8px;
    margin-top: -4px;
    padding: 0 10px;
    line-height: 1.7;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    transition: padding 0.3s ease;
}

/* 開いたときのスタイル */
.content.show {
    opacity: 1;
    padding: 15px 20px;
    max-height: 100%;
    padding-top: 25px;
    margin-top: -20px;
}

button {
    margin: 10px;
    display: inline-block;
    padding: 10px 20px;
    background-color: #44bb44;
    color: #ffffff;
    text-decoration: none;
    border-radius: 5px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    border: none;
    border-bottom: #339933 2px solid;
}

button:hover {
    background-color: #339933;
    box-shadow: 0 0 10px rgba(0, 0, 0, 1);
}

section input {
    margin-left: auto;
    margin-top: auto;
    margin-bottom: auto;
    padding: 5px;
    font-size: 16px;
    width: calc(100% - 10px);
    height: 30px;
    border: 0px;
    border-radius: 5px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
    transition: box-shadow 0.3s ease;

}

table {
    width: calc(100% - 20px);
    border-collapse: collapse;
    margin: 10px;
}

td, th {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
    border-bottom: #339933 2px solid;
    border-right: #339933 2px solid;
}

th {
    background-color: #f2f2f2;
    border-right: #339933 2px solid;
}

p.example {
    background-color: #dddddd;
    border-left: 4px solid #339933;
    padding: 10px;
    margin: 10px 0;
    font-style: italic;
    border-radius: 10px;
    font-size: large;
    padding-left: 20px;
}

p span.example-jp {
    font-size: small;
    margin-left: 20px;
}

.side-by-side {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.side-by-side table {
    flex: 1;
    width: calc(50% - 20px);
}

section.reults h3 {
    border: none;
}

section.results p span.type {
    background-color: #dddddd;
    border-radius: 5px;
    padding: 5px;
    margin-right: 10px;
}