/* --- Global Reset & Base --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #fff;
    color: #222;
    line-height: 1.7;
}

/* --- Layout Container --- */
.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 50px 25px;
}

/* --- Header --- */
.site-header {
    text-align: center;
    margin-bottom: 25px;
    padding-bottom: 25px;
}

.site-header h1 {
    font-family: inherit;
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: normal;
    color: #000;
}
.site-header .subtitle {
    font-size: 0.9rem;
    color: #888;
    margin-top: 8px;
}

/* --- 注意書き --- */
.site-notice {
    margin: 40px 0;
    padding: 20px 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
    background-color: transparent;
    border-radius: 0;
}

.disclaimer {
    font-size: 0.85rem;
    color: #555;
    text-align: center;
    line-height: 1.7;
}

/* --- Axiom List --- */
.axiom-list {
    border: none;
    border-radius: 0;
    overflow: visible;
    box-shadow: none;
    counter-reset: axiom-counter;
}

.axiom-item {
    border-bottom: 1px solid #eee;
    background-color: transparent;
    counter-increment: axiom-counter;
}
.axiom-item:last-child {
    border-bottom: 1px solid #eee;
}
.axiom-item[open] .axiom-trigger {
    background-color: #f9f9f9;
}
.axiom-item[open] .axiom-main-title::before {
    content: '－';
}

/* --- 開閉ボタン --- */
.axiom-trigger {
    width: 100%;
    background-color: transparent;
    padding: 18px 0;
    font-size: 1rem;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
    transition: background-color 0.2s ease;
    list-style: none;
}
.axiom-trigger::-webkit-details-marker {
    display: none;
}
.axiom-trigger:hover {
    background-color: #f9f9f9;
}
.axiom-trigger:focus-visible {
    outline: 2px solid #000;
    outline-offset: 2px;
}

.axiom-main-title {
    display: flex;
    align-items: center;
    flex-grow: 1;
    min-width: 0;
}
.axiom-main-title::before {
    content: '＋';
    font-size: 1rem;
    margin-right: 15px;
    color: #999;
    font-family: inherit;
    font-weight: normal;
    transition: none;
}
.axiom-number {
    font-family: inherit;
    font-weight: normal;
    color: #999;
    margin-right: 10px;
}
.axiom-number::before {
    content: counter(axiom-counter) '.';
}
.axiom-title {
    font-weight: 600;
    color: #222;
}

/* --- 開いたときの中身 --- */
.axiom-content {
    background-color: transparent;
}
.axiom-content p {
    padding: 10px 10px 20px 40px;
    font-size: 0.9rem;
    color: #444;
}

/* --- タグのスタイル --- */
.axiom-tags {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
    padding: 0 10px 0 0;
}

.tag {
    padding: 0;
    font-size: 0.8rem;
    font-weight: normal;
    border-radius: 0;
    white-space: nowrap;
    border: none;
    background-color: transparent;
    color: #888;
}
.tag-relationship,
.tag-lifestyle,
.tag-health,
.tag-philosophy,
.tag-trivia {
    background-color: transparent;
    color: #888;
    border: none;
}

/* --- Footer --- */
.site-footer {
    text-align: center;
    margin-top: 50px;
    padding-top: 25px;
    font-size: 0.8rem;
    color: #999;
}

/* --- 画面幅が600px以下の時のためのスタイル --- */
@media (max-width: 600px) {
    .axiom-trigger {
        flex-direction: column; 
        align-items: flex-start;
        gap: 10px;
    }
    .axiom-content p {
        padding: 10px 10px 20px 20px;
    .axiom-tags {
        padding-left: 0;
        margin-left: 40px;
    }
}