body {
    background: #f7f7f7;
    color: #333;
    font-family: 'Noto Sans JP', sans-serif;
}

.main {
    width: 100%;
    max-width: 1000px;
    min-width: 300px;
    background: #fff;
    padding: 24px;
    box-shadow: 0 0 16px rgba(0, 0, 0, 0.08);
    border-radius: 12px;
}

.menuhead {
    border-bottom: solid 4px #2c7a7b;
}

.language-box {
    background: #e6fffb;
    border-radius: 12px;
    padding: 12px 16px;
    display: grid;
    gap: 8px;
}

.font-size-switch .btn {
    min-width: 72px;
}

.font-size-switch .btn.active {
    background-color: #2c7a7b;
    color: #fff;
}

.midline {
    border-top: solid 6px #2c7a7b;
    margin: 24px 0;
}

.button012 {
    display: block;
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
    background: linear-gradient(135deg, #2c7a7b 0%, #319795 100%);
    color: #fff;
    padding: 32px 16px;
    border-radius: 16px;
    text-decoration: none;
    box-shadow: 0 8px 20px rgba(44, 122, 123, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button012:hover {
    transform: translateY(-4px);
    color: #fff;
    box-shadow: 0 12px 28px rgba(44, 122, 123, 0.4);
}

.menu-grid .col-12 {
    display: flex;
}

.menu-grid a {
    flex: 1;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c7a7b;
    border-left: 6px solid #2c7a7b;
    padding-left: 12px;
    margin-bottom: 16px;
}

.timeline {
    display: grid;
    gap: 16px;
}

.timeline-item {
    background: #f0fff4;
    border-left: 6px solid #38a169;
    padding: 16px 20px;
    border-radius: 12px;
}

.timeline-step {
    font-weight: 700;
    color: #2f855a;
    margin-bottom: 4px;
}

.item-card {
    border: none;
    background: #fffdf7;
    box-shadow: 0 0 12px rgba(0, 0, 0, 0.08);
}

.item-list-entry {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px dashed #ccc;
    padding: 6px 0;
}

.item-list-entry:last-child {
    border-bottom: none;
}

.guide-section {
    margin-top: 32px;
    background: #fefcbf;
    padding: 16px;
    border-radius: 12px;
    border-left: 6px solid #d69e2e;
}

a.nav-link.active {
    background-color: #2c7a7b !important;
}

footer {
    border-top: 1px solid #ddd;
    padding-top: 16px;
}