:root {
  --C_ACCENT: #a171aa;
  --C_WHITE: #ffffff;
  --C_BLACK: #000000;
  --C_BG_BODY: #f2f2f2;
  --C_BG_HEADING: #f0f0f0; 
  --C_TEXT: #333333;
}

html {
  font-size: calc(calc(10 / 560) * 100vw);
}
@media screen and (min-width:560px) {
  html {
    font-size: 62.5%;
  }
}

body {
  font-family: noto-sans-cjk-jp, sans-serif;
  font-style: normal;
  font-weight: 100;
  line-height: 1.8;
  color: var(--C_TEXT);
  margin: 0;
  padding: 2.0rem 0;
  /* 画像の密度に合わせて少し小さめの13pxに設定 */
  font-size: 1.4rem; 
  background-color: var(--C_BG_BODY);
}

/* リンクスタイル */
a {
  text-decoration: none;
  color: var(--C_ACCENT);
  border-bottom: 1px solid var(--C_ACCENT);
}
a:hover {
  opacity: 0.7;
}

/* コンテンツラッパー */
.content-wrapper {
  background-color: var(--C_WHITE);
  width: 90%;
  max-width: 800px;
  margin: 0 auto;
  padding: 4.0rem;
  box-sizing: border-box;
  box-shadow: 0 2px 5px rgba(0,0,0,0.05);
  border-radius: 1rem;
}

main {
  width: 100%;
}

/* タイトルエリア */
.campaign-title {
  text-align: center;
  font-size: 2.1rem; 
  font-weight: 700;
  margin-bottom: 4.0rem;
  line-height: 1.6;
  color: #333;
  word-break: keep-all;
}

/* 見出し h2 (グレー帯) */
h2 {
  background-color: var(--C_BG_HEADING);
  color: var(--C_TEXT);
  font-size: 1.6rem; 
  font-weight: 700;
  padding: 1.0rem 1.5rem;
  margin-top: 4.5rem;
  margin-bottom: 2.0rem;
  border-left: 5px solid var(--C_ACCENT);
}

/* 見出し h3 (STEP等) */
h3 {
  font-size: 1.5rem; 
  font-weight: 700;
  margin-top: 3.0rem;
  margin-bottom: 1.0rem;
  color: var(--C_TEXT);
}

/* 段落 */
p {
  margin-bottom: 1.5rem;
}

/* STEPラベル */
.step-label {
  font-weight: 700;
  margin-right: 0.5rem;
  color: #444;
}

/* --- リスト設定（「・」を表示するカスタム設定） --- */
ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: 2.0rem;
}

ul li {
  position: relative;
  padding-left: 1.8rem;
  margin-bottom: 0.6rem;
  line-height: 1.6;
}

ul li::before {
  content: "・";
  position: absolute;
  left: 0;
  top: 0;
  font-weight: 700;
  color: var(--C_TEXT);
}

ul.period-list li {
  padding-left:0;
}

ul.period-list li::before {
  content:"";
}

.note-list {
  margin-top: 1.5rem;
}

.note-list li {
  font-size: 1.1rem; 
  color: #666;
  padding-left: 1.5rem;
  margin-bottom: 0.3rem;
  line-height: 1.5;
}

.note-list li::before {
  content: "※";
  font-weight: normal;
}

.step-challenge-list {
  margin-bottom: 0;
}
.step-challenge-list li:last-child {
  margin-bottom: 0;
}

.u_note-list {
  position: relative;
  padding-left: 1.5rem;
  display: inline-block;
  font-size: 1.1rem;
}

.u_note {
  line-height: 1.6;
  color: #666;
}

ul li.u_note::before {
  content: "";
}

.u_note-list::before {
  content: "※";
  font-weight: normal;
  position: absolute;
  top:0;
  left: 0;
}

.u_note.table-note {
  text-indent: -1rem;
  padding-left:1rem;
}

.precautions-list li:last-child {
  margin-top:2rem;
}

/* テーブルスタイル（PC/デフォルト） */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 2.0rem;
  margin-bottom: 1.0rem;
  font-size: 1.4rem; 
  border: 1px solid #ddd;
}

th, td {
  border: 1px solid #ddd;
  padding: 1.0rem;
  text-align: left;
}

th {
  background-color: #f9f9f9;
  font-weight: 700;
  width: 30%;
}

/* ------------------------------------- */
/* スマートフォン表示用のCSS (max-width: 768px以下で適用) */
/* ------------------------------------- */
@media screen and (max-width: 560px) {
  
  thead {
    display: none;
  }

  tr {
    display: block;
    padding: 0;
  }
  
  td {
    display: block;
    border: none;
    padding: 1.0rem 1.0rem 1.0rem 35%;
    position: relative;
    text-align: left;
    border-bottom: 1px solid #ccc;
  }

  tr > td:last-child {
      border-bottom: none;
  }

  td::before {
    content: attr(data-label);
    font-weight: 700;
    color: #333;
    background-color: #f9f9f9;
    
    position: absolute;
    top: 0;
    left: 0;
    width: 30%;
    height: 100%;
    
    text-align: left;
    padding: 1.0rem;
    
    box-sizing: border-box;
    border-right: 1px solid #ddd;
  }
}

/* フッター */
.footer {
  width: 100%;
  padding-top: 4.0rem;
  text-align: center;
  color: #999;
  /* 最小サイズ 10px */
  font-size: 1.0rem; 
  margin-top: 2.0rem;
}

/* レスポンシブ調整 */
@media screen and (max-width: 560px) {
  .content-wrapper {
    width: 96%;
    padding: 2.0rem 1.5rem; /* スマホではパディングを少し狭く */
  }
  .campaign-title {
    font-size: 1.8rem; /* スマホで少し小さく */
    margin-bottom: 3.0rem;
  }
  h2 {
    font-size: 1.4rem;
    margin-top: 3.0rem;
    padding: 0.8rem 1.0rem;
  }
  th, td {
    display: block;
    width: 100%;
    box-sizing: border-box;
  }
  th {
    background-color: #eee;
  }
}