/*
 * ファイル名: public/css/column/category/aging/houreisen.css
 * 記事テーマ: ほうれい線の原因と対策（情報提供）
 */

/* ----------------------------------
 * 1. 基本設定
 * ---------------------------------- */
body {
    font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
    line-height: 1.8;
    color: #333;
    background-color: #f7f7f7;
    text-align: left;
}

.article-container {
    max-width: 880px;
    margin: 40px auto;
    background-color: #fff;
    padding: 35px 45px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    border-radius: 10px;
}

/* ----------------------------------
 * 2. タイトルと見出し
 * ---------------------------------- */
.article-title {
    font-size: 2.3em;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 25px;
    border-bottom: 3px solid #f1c40f; /* ゴールド系のアクセント */
    padding-bottom: 15px;
}

h2 {
    font-size: 1.9em;
    color: #34495e; /* 落ち着いたネイビー系 */
    margin-top: 45px;
    margin-bottom: 20px;
    padding: 10px 0;
    border-left: 6px solid #2980b9;
    padding-left: 18px;
    background-color: #ecf0f1; /* セクション背景 */
}

h3 {
    font-size: 1.4em;
    color: #34495e;
    margin-top: 30px;
    margin-bottom: 15px;
    border-bottom: 1px dashed #ccc;
    padding-bottom: 5px;
}

h4 {
    font-size: 1.2em;
    color: #e67e22; /* 強調したい項目の見出し色 */
    margin: 15px 0 8px 0;
    font-weight: 600;
}

/* ----------------------------------
 * 3. 記事本文
 * ---------------------------------- */
.intro-section .lead-text {
    font-size: 1.1em;
    font-weight: 500;
    color: #555;
    border-left: 4px solid #f1c40f;
    padding-left: 15px;
    margin-bottom: 30px;
}

p {
    margin-bottom: 20px;
    text-align: left;
}

/* ----------------------------------
 * 4. リスト（原因、対策、特徴）
 * ---------------------------------- */

.cause-list, .solution-list, .age-prevention-list, .feature-list {
    list-style: none;
    padding: 0;
    margin: 25px 0;
}

/* 原因リスト (番号付き) */
.cause-list li {
    padding: 15px;
    margin-bottom: 15px;
    background-color: #fcfcfc;
    border: 1px solid #eee;
    border-radius: 5px;
    padding-left: 50px;
    position: relative;
}

.cause-list li h4 {
    margin-top: 0;
    margin-bottom: 5px;
}

.cause-list li::before {
    content: attr(data-list-counter); /* CSSカウンターは使えないので、番号を抽出 */
    content: counter(cause-counter) ":";
    counter-increment: cause-counter;
    position: absolute;
    left: 15px;
    top: 15px;
    font-size: 1.5em;
    font-weight: 700;
    color: #e67e22;
}
.cause-list { counter-reset: cause-counter; }


/* 対策、特徴リスト (チェックマーク) */
.solution-list li, .age-prevention-list li, .feature-list li {
    padding-left: 30px;
    position: relative;
    margin-bottom: 20px;
    border-bottom: 1px dotted #eee;
    padding-bottom: 10px;
}

.solution-list li::before, .age-prevention-list li::before, .feature-list li::before {
    content: "✔️"; /* チェックマーク */
    position: absolute;
    left: 0;
    top: 5px;
    color: #27ae60;
}

/* ----------------------------------
 * 5. Q&Aセクション
 * ---------------------------------- */
.qanda-item {
    margin-bottom: 30px;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: #fcfcfc;
}

.qanda-item h3 {
    font-size: 1.1em;
    color: #2980b9;
    border: none;
    margin-top: 0;
}

.qanda-item p {
    margin-top: 10px;
    padding-left: 10px;
    border-left: 3px solid #3498db;
    font-size: 0.95em;
}

/* ----------------------------------
 * 6. 戻るボタンなど
 * ---------------------------------- */
.back-button-container {
    text-align: center;
    margin-top: 50px;
}

.btn-back {
    display: inline-block;
    padding: 10px 25px;
    background-color: #7f8c8d;
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    transition: background-color 0.3s;
    font-weight: 500;
}

.btn-back:hover {
    background-color: #555;
}