/* はじめての方へ ページ
   2色システム: 構造=紺(#1f3c5f)、アクション=緑(--color-primary)。
   見出し(product-category-title)・ステップ(installation-guide)は products-item.css を流用しつつ上書き */

body {
  overflow-x: clip; /* 全幅バンド(50vw)のスクロールバー分のはみ出しを抑える */
}

/* ページタイトル帯: 紺の題字帯 + 緑のキーライン */
.product-hero.-first-time {
  height: auto;
  background: #1f3c5f;
  background-image: none;
  border-bottom: 4px solid var(--color-primary);
  margin-bottom: 32px;
  padding: 40px 16px;
  justify-content: center;
}

.product-hero.-first-time::before {
  background: none;
}

.product-hero-content.-first-time {
  width: 100%;
  max-width: 960px;
  text-align: left;
}

.product-hero.-first-time .product-hero-title {
  color: var(--color-white);
  text-shadow: none;
  font-size: 28px;
  border-left: 6px solid var(--color-primary);
  padding-left: 14px;
  line-height: 1.3;
}

.product-hero-sub {
  color: #b9c7d6;
  font-size: 0.95rem;
  margin: 10px 0 0;
  padding-left: 20px;
}

/* ページレイアウト */
.first-time-page {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1rem 4rem;
}

.first-time-section {
  margin-bottom: 3rem;
}

/* 偶数セクションは薄グレーの全幅バンドにしてリズムを付ける */
.first-time-section:nth-of-type(even) {
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  padding: 2.25rem calc(50vw - 50%);
  background: #f5f7f9;
  border-top: 1px solid #e5eaee;
  border-bottom: 1px solid #e5eaee;
}

/* 見出し: products-item.css の緑下線を上書きし、紺のバンド見出しにする */
.first-time-page .product-category-title {
  font-size: 20px;
  color: #16324f;
  background: #eef2f7;
  border-bottom: none;
  border-left: 5px solid #1f3c5f;
  padding: 0.7rem 1rem;
  margin: 0 0 1.5rem;
  line-height: 1.4;
}

.first-time-section:nth-of-type(even) .product-category-title {
  background: var(--color-white);
  border: 1px solid #d9dee2;
  border-left: 5px solid #1f3c5f;
}

/* 冒頭: リード文 + キッチン写真の2カラム */
.first-time-intro-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 1.5rem;
  align-items: start;
  margin-bottom: 1.5rem;
}

.first-time-intro-figure {
  margin: 0;
  border: 1px solid #d9dee2;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-white);
}

.first-time-intro-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.first-time-intro-figure figcaption {
  font-size: 0.78rem;
  color: #64748b;
  padding: 0.5rem 0.75rem;
  border-top: 1px solid #e5eaee;
  line-height: 1.6;
}

.first-time-lead {
  line-height: 2;
  color: #334155;
  margin: 0 0 1.5rem;
}

.first-time-section-intro {
  color: #475569;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.first-time-note {
  margin-top: 1.25rem;
  font-size: 0.9rem;
  color: #475569;
  line-height: 1.8;
}

/* 特徴 3カラム: 罫線ボックス */
.first-time-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.first-time-feature {
  background: var(--color-white);
  border: 1px solid #d9dee2;
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.25rem;
}

.first-time-feature h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #16324f;
  border-left: 4px solid #1f3c5f;
  padding-left: 0.6rem;
  margin: 0 0 0.6rem;
}

.first-time-feature p {
  font-size: 0.88rem;
  line-height: 1.8;
  color: #475569;
  margin: 0;
}

/* 機種の選び方 2カラム */
.choose-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.choose-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border: 1px solid #d9dee2;
  border-top: 3px solid #1f3c5f;
  border-radius: var(--radius-sm);
  padding: 1.5rem;
}

.choose-card-tag {
  display: inline-block;
  align-self: flex-start;
  padding: 0.2rem 0.7rem;
  border: 1px solid #c6d3e2;
  border-radius: 2px;
  color: #16324f;
  background: #eef2f7;
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.choose-card-image {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 160px;
  margin: 0 0 1rem;
  border: 1px solid #eef1f3;
  background: var(--color-white);
}

.choose-card-image img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
}

.choose-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #16324f;
  margin-bottom: 0.6rem;
}

.choose-card-desc {
  font-size: 0.9rem;
  line-height: 1.9;
  color: #475569;
  margin-bottom: 1rem;
}

.choose-card-points {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
}

.choose-card-points li {
  position: relative;
  padding-left: 1.4em;
  margin-bottom: 0.4rem;
  font-size: 0.88rem;
  color: #334155;
}

.choose-card-points li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* 補助導線は枠線ボタン。a:link(common.css)より優先させるため a. で詳細度を上げる */
a.choose-card-link,
a.choose-card-link:link,
a.choose-card-link:visited {
  color: var(--color-primary-dark);
}

a.choose-card-link:hover {
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
}

.choose-card-link {
  display: inline-block;
  margin-top: auto;
  align-self: flex-start;
  padding: 0.6rem 1.25rem;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

/* 導入の流れ: installation-guide(products-item.css)の補足 */
.step-area {
  margin-top: 0.5rem;
  font-size: 0.88rem;
  color: #334155;
}

.step-area span {
  display: inline-block;
  margin-right: 0.5rem;
  padding: 0.1rem 0.6rem;
  border: 1px solid #d9dee2;
  border-radius: 2px;
  background: #f2f4f5;
  color: #334155;
  font-size: 0.78rem;
  font-weight: 700;
}

.step-area-note {
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: #64748b;
}

/* よくあるご質問 */
.first-time-faq {
  border-top: 1px solid #d9dee2;
}

.faq-item {
  border-bottom: 1px solid #d9dee2;
  padding: 1.1rem 0.25rem;
}

.faq-q {
  position: relative;
  padding-left: 1.8rem;
  font-weight: 700;
  color: var(--color-dark);
  margin: 0 0 0.4rem;
}

.faq-q::before {
  content: 'Q.';
  position: absolute;
  left: 0;
  color: #1f3c5f;
  font-weight: 700;
}

.faq-a {
  position: relative;
  padding-left: 1.8rem;
  font-size: 0.92rem;
  line-height: 1.9;
  color: #475569;
  margin: 0;
}

.faq-a::before {
  content: 'A.';
  position: absolute;
  left: 0;
  color: #94a3b8;
  font-weight: 700;
}

@media (max-width: 768px) {
  .product-hero.-first-time {
    padding: 24px 16px;
  }

  .product-hero.-first-time .product-hero-title {
    font-size: 22px;
  }

  .first-time-features {
    grid-template-columns: 1fr;
  }

  .first-time-section:nth-of-type(even) {
    padding-top: 1.75rem;
    padding-bottom: 1.75rem;
  }

  .first-time-intro-grid {
    grid-template-columns: 1fr;
  }

  .first-time-intro-figure {
    max-width: 340px;
  }

  .choose-grid {
    grid-template-columns: 1fr;
  }

  .first-time-section {
    margin-bottom: 2.5rem;
  }
}