@charset "utf-8";
/* CSS Document */
/* --- リセットCSS & 基本設定 --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px; /* ヘッダーの高さ分調整 */
}
:root {
  /* サムライブルー（勝色・濃藍）をテーマカラーに定義 */
  --samurai-blue: #0D2556;
  --samurai-blue-light: #2A4B8D;
  --text-main: #1a2b4b; /* 青みがかったダークグレー */
  --bg-light-blue: #F4F7FB; /* 極めて薄い青（背景用） */
}
body {
  font-family: "Shippori Mincho", "Yu Mincho", "Hiragino Mincho ProN", serif;
  color: var(--text-main);
  line-height: 2;
  background-color: #fff;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  width: 100%;
}
/* 汎用非表示クラス */
.hidden {
  display: none !important;
}
a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}
a:hover {
  opacity: 0.7;
  color: var(--samurai-blue-light);
}
ul {
  list-style: none;
}
img {
  max-width: 100%;
  height: auto;
  vertical-align: bottom;
  display: block;
}
/* 共通クラス */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}
.section-padding {
  padding: 140px 0;
}
.section-title {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 80px;
  letter-spacing: 0.15em;
  font-weight: 500;
  color: var(--samurai-blue);
}
.section-title span {
  display: block;
  font-size: 0.8rem;
  color: #8fa1b3;
  margin-top: 15px;
  letter-spacing: 0.1em;
  font-family: "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
}
/* 青いボタン */
.btn-blue {
  display: inline-block;
  background-color: var(--samurai-blue);
  color: #fff;
  padding: 18px 70px;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  border: 1px solid var(--samurai-blue);
  cursor: pointer;
  transition: all 0.4s ease;
  max-width: 100%; /* スマホではみ出し防止 */
}
.btn-blue:hover {
  background-color: #fff;
  color: var(--samurai-blue);
}
/* --- アニメーション用クラス --- */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s ease, transform 1s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
/* 画像のアニメーション修正 - 安全なフェードイン方式に変更 */
.reveal-img {
  /* 初期状態：透明かつ、少し下に配置 */
  opacity: 0;
  transform: translateY(30px);
  /* アニメーション設定：ゆっくりと不透明になりながら元の位置へ */
  transition: opacity 1.5s ease, transform 1.5s ease-out;
  /* 描画最適化 */
  will-change: opacity, transform;
}
.reveal-img.visible {
  /* 表示状態：不透明にし、元の位置へ戻す */
  opacity: 1;
  transform: translateY(0);
}
.delay-100 {
  transition-delay: 0.1s;
}
.delay-200 {
  transition-delay: 0.2s;
}
.delay-300 {
  transition-delay: 0.3s;
}
/* --- ヘッダー --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 15px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(5px);
  box-shadow: 0 1px 10px rgba(13, 37, 86, 0.05);
  transition: all 0.3s;
}
/* --- ヘッダー (初期状態は隠す) --- */
#main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 15px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(5px);
  box-shadow: 0 1px 10px rgba(13, 37, 86, 0.05);
  /* ヘッダーの表示切り替え用設定 */
  transform: translateY(-100%); /* 最初は画面外（上）に隠す */
  transition: transform 0.4s ease; /* 滑らかに出現 */
}
/* クラスが付与されたら表示 */
#main-header.header-visible {
  transform: translateY(0);
}
.logo {
  width: 160px; /* 少し小さめに調整 */
  transition: opacity 0.3s;
  z-index: 1001; /* ハンバーガーメニューより上に */
}
.logo:hover {
  opacity: 0.7;
}
.logo img {
  width: 100%;
  height: auto;
}
/* PC用ナビゲーション */
nav ul {
  display: flex;
  gap: 30px;
}
nav ul li a {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--samurai-blue);
  position: relative;
}
nav ul li a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--samurai-blue-light);
  transition: width 0.3s;
}
nav ul li a:hover::after {
  width: 100%;
}
/* ハンバーガーメニュー (PCでは非表示) */
.hamburger {
  display: none;
  cursor: pointer;
  width: 30px;
  height: 25px;
  position: relative;
  z-index: 1001;
}
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--samurai-blue);
  position: absolute;
  transition: all 0.3s;
}
.hamburger span:nth-child(1) {
  top: 0;
}
.hamburger span:nth-child(2) {
  top: 11px;
}
.hamburger span:nth-child(3) {
  bottom: 0;
}
/* ハンバーガーアクティブ時 */
.hamburger.active span:nth-child(1) {
  top: 11px;
  transform: rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  bottom: 12px;
  transform: rotate(-45deg);
}
/* --- 1. Hero エリア --- */
.hero {
  width: 100%;
  height: 100vh; /* スマホのアドレスバー対策でdvh推奨だが互換性のためvh */
  min-height: 500px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
/* Hero内の固定ロゴ */
.hero-logo-mark {
  position: absolute;
  top: 30px;
  left: 40px;
  width: 320px; /* ヘッダーロゴより少し大きくても良い */
  z-index: 50; /* オーバーレイより上、ヘッダーより下 */
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5)); /* 背景画像に負けないよう影をつける */
}
.hero-logo-mark img {
  width: 75%;
  height: auto;
}
.hero-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}
.slide-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 2s ease-in-out;
  object-fit: cover;
}
.slide-item.active {
  opacity: 1;
}
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(13, 37, 86, 0.35);
  z-index: 2;
}
.hero-text {
  position: relative;
  z-index: 10;
  color: #fff;
  text-align: center;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  pointer-events: none;
  width: 90%; /* スマホではみ出さないように */
}
.hero-text h1 {
  font-size: 3rem;
  margin-bottom: 30px;
  font-weight: 500;
  letter-spacing: 0.2em;
  line-height: 1.4;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 1.5s ease forwards 0.5s;
}
.hero-text p {
  font-size: 1.1rem;
  letter-spacing: 0.2em;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 1.5s ease forwards 1s;
}
@keyframes heroFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
/* --- スクロールインジケーター (追加) --- */
.scroll-indicator {
  position: absolute;
  bottom: 110px; /* ドット(40px)より上に配置 */
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #fff;
  opacity: 0.8;
}
.scroll-text {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  margin-bottom: 10px;
  font-family: "Helvetica Neue", sans-serif;
  text-transform: uppercase;
}
.scroll-bar {
  width: 1px;
  height: 60px;
  background: rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
}
.scroll-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #fff;
  animation: scrollDown 2.5s cubic-bezier(0.77, 0, 0.175, 1) infinite;
}
@keyframes scrollDown {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(100%);
  }
}
.slider-indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  gap: 15px;
}
.indicator-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid #fff;
  background: transparent;
  cursor: pointer;
  transition: background-color 0.3s;
}
.indicator-dot:hover {
  background: rgba(255, 255, 255, 0.5);
}
.indicator-dot.active {
  background: #fff;
}
/* --- 導入メッセージ --- */
.intro-section {
  padding: 120px 20px;
  background-color: #fff;
  display: flex;
  justify-content: center;
}
.intro-box {
  max-width: 840px;
  width: 100%;
  padding: 80px 40px;
  position: relative;
  text-align: center;
  border: 1px solid var(--samurai-blue);
  background-color: #fff;
  margin: 20px;
}
.intro-box::after {
  content: '';
  position: absolute;
  top: 15px;
  left: 15px;
  width: 100%;
  height: 100%;
  border: 1px solid var(--samurai-blue);
  opacity: 0.3;
  z-index: -1;
  pointer-events: none;
}
.intro-title {
  font-size: 2rem;
  margin-bottom: 40px;
  color: var(--samurai-blue);
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 0.1em;
}
.intro-text {
  font-size: 1rem;
  line-height: 2.4;
  color: #4a5d7e;
  text-align: justify;
  text-align-last: center;
  letter-spacing: 0.05em;
}
/* --- 2. 新着情報 (News) --- */
.news-section {
  background-color: #fff;
}
.news-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.news-item {
  cursor: pointer;
}
.news-item img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
  margin-bottom: 20px;
  transition: transform 0.6s ease;
}
.news-item:hover img {
  transform: scale(1.05);
}
.news-image-wrapper {
  overflow: hidden;
  margin-bottom: 15px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.3s;
}
.news-item:hover .news-image-wrapper {
  border-color: var(--samurai-blue);
}
.news-date {
  display: block;
  font-size: 0.8rem;
  color: #8fa1b3;
  margin-bottom: 8px;
  font-family: "Helvetica Neue", sans-serif;
  letter-spacing: 0.05em;
}
.news-title {
  font-size: 1rem;
  font-weight: normal;
  line-height: 1.6;
  color: var(--text-main);
}
/* --- 3. サウナについて (About) --- */
.about-section {
  background-color: var(--bg-light-blue);
}
.feature-block {
  display: flex;
  align-items: center;
  margin-bottom: 150px;
  gap: 80px;
}
.feature-block:last-child {
  margin-bottom: 0;
}
.feature-block.reverse {
  flex-direction: row-reverse;
}
.feature-image {
  flex: 1;
  position: relative;
}
.feature-image::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 30px;
  width: 100%;
  height: 100%;
  border: 1px solid var(--samurai-blue);
  opacity: 0.3;
  z-index: 0;
  transition: all 0.6s ease;
}
.feature-block:hover .feature-image::before {
  top: 20px;
  left: 20px;
  opacity: 0.6;
}
.feature-image.reverse::before {
  left: auto;
  right: 30px;
}
.feature-block:hover .feature-image.reverse::before {
  right: 20px;
}
.feature-image img {
  position: relative;
  z-index: 1;
  width: 100%;
  box-shadow: 0 15px 40px rgba(13, 37, 86, 0.1);
}
.feature-text {
  flex: 1;
}
.feature-text h3 {
  font-size: 1.7rem;
  margin-bottom: 40px;
  font-weight: normal;
  letter-spacing: 0.1em;
  line-height: 1.4;
  border-left: 2px solid var(--samurai-blue);
  padding-left: 20px;
  color: var(--samurai-blue);
}
.feature-text p {
  color: #556b85;
  margin-bottom: 24px;
  font-size: 0.95rem;
  text-align: justify;
}
/* --- パララックス --- */
.parallax-separator {
  width: 100%;
  height: 400px;
  background-image: url("../image/parallax_1.png");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.parallax-separator::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(13, 37, 86, 0.5);
}
.parallax-text {
  position: relative;
  z-index: 2;
  color: #fff;
  font-size: 1.5rem;
  letter-spacing: 0.2em;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.5);
  padding: 20px 60px;
}
/* --- 4. Flow --- */
.flow-section {
  background-color: #fff;
}
.flow-steps {
  display: flex;
  justify-content: space-between;
  position: relative;
  padding-top: 20px;
}
.flow-steps::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 5%;
  width: 90%;
  height: 1px;
  background: #e0e6ed;
  z-index: 0;
}
.step-item {
  position: relative;
  z-index: 1;
  background: #fff;
  width: 22%;
  text-align: center;
  padding: 0 10px;
}
.step-number {
  display: inline-block;
  width: 80px;
  height: 80px;
  line-height: 60px;
  border-radius: 50%;
  background-color: var(--samurai-blue);
  color: #fff;
  font-size: 1.2rem;
  font-family: "Helvetica Neue", sans-serif;
  margin-bottom: 20px;
  border: 10px solid #fff;
  box-shadow: 0 5px 15px rgba(13, 37, 86, 0.2);
}
.step-title {
  font-size: 1.1rem;
  margin-bottom: 15px;
  font-weight: bold;
  color: var(--samurai-blue);
}
.step-desc {
  font-size: 0.9rem;
  color: #666;
  line-height: 1.8;
  text-align: center;
}
/* --- 5. Products --- */
.product-section {
  background-color: var(--bg-light-blue);
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); /* スマホ用に最小幅調整 */
  gap: 50px;
  margin-bottom: 80px;
}
.product-card {
  background: #fff;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  border-bottom: 3px solid transparent;
}
.product-card:hover {
  transform: translateY(-15px);
  box-shadow: 0 30px 60px rgba(13, 37, 86, 0.1);
  border-bottom: 3px solid var(--samurai-blue);
}
.product-image-wrapper {
  overflow: hidden;
  aspect-ratio: 4/3;
}
.product-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.product-card:hover .product-image-wrapper img {
  transform: scale(1.1);
}
.product-info {
  padding: 40px 30px;
  text-align: center;
}
.product-info h3 {
  font-size: 1.4rem;
  margin-bottom: 10px;
  letter-spacing: 0.1em;
  font-weight: normal;
  color: var(--samurai-blue);
}
.product-price {
  display: block;
  margin-bottom: 20px;
  color: #888;
  font-family: "Helvetica Neue", sans-serif;
  letter-spacing: 0.05em;
}
.product-info p {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 30px;
  line-height: 1.8;
}
.btn-link {
  display: inline-block;
  border-bottom: 1px solid var(--samurai-blue);
  padding-bottom: 5px;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  transition: opacity 0.3s;
  color: var(--samurai-blue);
}
/* --- 6. Company --- */
.company-section {
  background-color: var(--samurai-blue);
  color: #fff;
}
.company-wrapper {
  max-width: 800px;
  margin: 0 auto;
}
.company-section .section-title {
  color: #fff;
}
.company-section .section-title span {
  color: #aabbd3;
}
.company-table {
  width: 100%;
  border-collapse: collapse;
}
.company-table th, .company-table td {
  padding: 25px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  text-align: left;
}
.company-table th {
  width: 30%;
  font-weight: normal;
  color: #aabbd3;
  font-size: 0.9rem;
}
.company-table a {
  color: #fff;
  border-bottom: 1px solid #fff;
}
/* --- 7. Contact --- */
.contact-section {
  background-color: #222;
  color: #fff;
  text-align: center;
  background-image: linear-gradient(rgba(0, 0, 0, .6), rgba(0, 0, 0, .6)), url("../image/parallax_3.png");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  position: relative; /* オーバーレイがないため文字の視認性確保用 */
}
/* 画像が明るい場合に備えて文字にシャドウを追加 */
.contact-section .section-title, .contact-section .section-title span, .contact-lead {
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}
.contact-section .section-title, .contact-section .section-title span {
  color: #fff;
}
.contact-section .section-title span {
  color: #e0e0e0;
}
.contact-lead {
  margin-bottom: 60px;
  color: #fff;
}
.form-wrapper {
  max-width: 700px;
  margin: 0 auto;
  text-align: left;
  background: rgba(13, 37, 86, 0.65); /* フォーム背景を少し濃くして文字を読みやすく */
  padding: 40px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(5px);
}
.form-row {
  margin-bottom: 25px;
}
.form-row label {
  display: block;
  margin-bottom: 10px;
  font-size: 0.9rem;
  color: #dbe4ef;
  letter-spacing: 0.05em;
}
.form-row input, .form-row textarea, .form-row select {
  width: 100%;
  padding: 18px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-family: inherit;
  border-radius: 0;
  transition: background 0.3s;
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
  background: rgba(255, 255, 255, 0.2);
  outline: none;
  border-color: #fff;
}
.form-row textarea {
  height: 180px;
  resize: vertical;
}
.submit-btn-area {
  text-align: center;
  margin-top: 50px;
}
.btn-white {
  background: #fff;
  color: var(--samurai-blue);
  padding: 18px 80px;
  border: none;
  cursor: pointer;
  letter-spacing: 0.15em;
  transition: all 0.3s;
  font-size: 1rem;
  font-weight: bold;
  width: 100%;
  max-width: 300px;
}
.btn-white:hover {
  background-color: #e6e6e6;
  transform: scale(1.02);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}
/* --- Footer --- */
footer {
  background: #081633;
  color: #8fa1b3;
  padding: 40px;
  text-align: center;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}
/* --- レスポンシブ対応 (スマホ) --- */
@media (max-width: 768px) {
  /* ヘッダー調整 */
  header {
    padding: 15px 20px;
  }
  /* ヘッダー調整 */
  #main-header {
    padding: 15px 20px;
  }
  .hamburger {
    display: block; /* ハンバーガー表示 */
  }
  /* スマホメニュー（初期状態は画面外） */
  nav {
    position: fixed;
    top: 0;
    right: -100%; /* 右側に隠す */
    width: 80%;
    height: 100vh;
    background: #fff;
    padding-top: 80px;
    transition: right 0.4s ease;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    z-index: 1000;
  }
  nav.active {
    right: 0; /* スライドイン */
  }
  nav ul {
    flex-direction: column;
    gap: 0;
  }
  nav ul li {
    border-bottom: 1px solid #eee;
  }
  nav ul li a {
    display: block;
    padding: 20px 30px;
    font-size: 1rem;
    color: var(--samurai-blue);
  }
  /* パララックス・背景固定解除 (スマホでのバグ防止) */
  .hero, .contact-section, .parallax-separator {
    background-attachment: scroll;
  }
  /* 余白とフォントサイズ調整 */
  .section-padding {
    padding: 80px 0;
  }
  .section-title {
    font-size: 1.8rem;
    margin-bottom: 50px;
  }
  /* Hero */
  .hero-text h1 {
    font-size: 1.8rem;
    margin-bottom: 15px;
  }
  .hero-text p {
    font-size: 0.9rem;
  }
  /* Intro */
  .intro-section {
    padding: 60px 20px;
  }
  .intro-box {
    padding: 40px 20px;
    margin: 10px;
  }
  .intro-title {
    font-size: 1.3rem;
    margin-bottom: 30px;
  }
  .intro-text {
    font-size: 0.9rem;
    text-align: left; /* スマホは左寄せ */
    text-align-last: left;
    line-height: 1.8;
  }
  /* News Grid */
  .news-list {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  /* About (Flex -> Column) */
  .feature-block, .feature-block.reverse {
    flex-direction: column;
    gap: 40px;
    margin-bottom: 100px;
  }
  .feature-image::before {
    display: none;
  } /* スマホでは枠線消してスッキリ */
  .feature-text h3 {
    font-size: 1.5rem;
    border-left: none;
    border-bottom: 2px solid var(--samurai-blue); /* 下線に変更 */
    padding-left: 0;
    padding-bottom: 10px;
    text-align: center;
    display: inline-block; /* 中央寄せ用 */
  }
  .feature-text {
    text-align: center; /* タイトル用 */
  }
  .feature-text p {
    text-align: left; /* 本文は左寄せ */
    margin-top: 20px;
  }
  /* Flow (横並び -> 縦並び) */
  .flow-steps {
    flex-direction: column;
    gap: 40px;
  }
  .flow-steps::before {
    width: 1px;
    height: 100%;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
  }
  .step-item {
    width: 100%;
    padding: 0;
  }
  .step-number {
    margin: 0 auto 15px;
  }
  /* Contact */
  .form-wrapper {
    padding: 25px 15px;
  }
  /* Company Table */
  .company-table th, .company-table td {
    display: block;
    width: 100%;
    padding: 10px 0;
  }
  .company-table th {
    border-bottom: none;
    padding-bottom: 0;
    color: #8fa1b3;
    font-size: 0.8rem;
  }
  .company-table td {
    padding-top: 5px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  /* Hero Logo Position for Mobile */
  .hero-logo-mark {
    top: 20px;
    left: 20px;
    width: 140px;
  }
}
/* --- 下層ページ固有CSS --- */
.page-header {
  padding-top: 140px;
  padding-bottom: 60px;
  background-color: var(--bg-light-blue);
  text-align: center;
}
.page-title {
  font-size: 2rem;
  color: var(--samurai-blue);
  letter-spacing: 0.1em;
  font-weight: 500;
}
.breadcrumb {
  margin-top: 20px;
  font-size: 0.8rem;
  color: #666;
}
.breadcrumb a:hover {
  text-decoration: underline;
}
/* ニュースリスト */
.news-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 60px;
}
.news-item {
  cursor: pointer;
}
.news-image-wrapper {
  overflow: hidden;
  margin-bottom: 15px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.3s;
}
.news-item:hover .news-image-wrapper {
  border-color: var(--samurai-blue);
}
.news-item img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.news-item:hover img {
  transform: scale(1.05);
}
.news-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.news-date {
  font-size: 0.8rem;
  color: #8fa1b3;
  font-family: "Helvetica Neue", sans-serif;
  letter-spacing: 0.05em;
}
.news-cat {
  font-size: 0.7rem;
  background: var(--samurai-blue);
  color: #fff;
  padding: 2px 8px;
}
.news-title {
  font-size: 1rem;
  font-weight: normal;
  line-height: 1.6;
}
/* ページネーション */
.pagination {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 60px;
}
.page-link {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid #ddd;
  color: var(--text-main);
  font-family: "Helvetica Neue", sans-serif;
  transition: all 0.3s;
}
.page-link.active, .page-link:hover {
  background-color: var(--samurai-blue);
  color: #fff;
  border-color: var(--samurai-blue);
}
@media (max-width: 768px) {
  .news-list-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .page-title {
    font-size: 1.5rem;
  }
}
/* --- 記事詳細CSS --- */
.article-header {
  padding-top: 140px;
  margin-bottom: 60px;
  text-align: center;
}
.article-meta {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 20px;
  align-items: center;
  font-family: "Helvetica Neue", sans-serif;
  color: #8fa1b3;
}
.article-cat {
  background: var(--samurai-blue);
  color: #fff;
  padding: 2px 10px;
  font-size: 0.8rem;
}
.article-title {
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--samurai-blue);
  margin-bottom: 40px;
  line-height: 1.5;
}
.article-eye-catch {
  width: 100%;
  margin-bottom: 60px;
}
.article-content {
  margin-bottom: 80px;
}
.article-content h2 {
  font-size: 1.4rem;
  border-left: 4px solid var(--samurai-blue);
  padding-left: 15px;
  margin: 40px 0 20px;
  color: var(--samurai-blue);
}
.article-content p {
  margin-bottom: 30px;
  text-align: justify;
}
.article-content img {
  margin: 40px 0;
  width: 100%;
}
/* ページネーション & 戻るボタン */
.article-nav {
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
  padding: 30px 0;
  display: flex;
  justify-content: space-between;
  margin-bottom: 60px;
}
.nav-prev, .nav-next {
  width: 45%;
}
.nav-prev a, .nav-next a {
  display: block;
  font-size: 0.9rem;
  color: #666;
}
.nav-prev a::before {
  content: '« ';
}
.nav-next a {
  text-align: right;
}
.nav-next a::after {
  content: ' »';
}
.back-btn-wrapper {
  text-align: center;
  margin-bottom: 80px;
}
.btn-outline {
  display: inline-block;
  border: 1px solid var(--samurai-blue);
  color: var(--samurai-blue);
  padding: 15px 60px;
  transition: all 0.3s;
}
.btn-outline:hover {
  background: var(--samurai-blue);
  color: #fff;
}
/* 商品一覧CSS */
.page-header {
  padding-top: 140px;
  padding-bottom: 60px;
  background-color: var(--bg-light-blue);
  text-align: center;
}
.page-title {
  font-size: 2rem;
  color: var(--samurai-blue);
  letter-spacing: 0.1em;
  font-weight: 500;
}
.breadcrumb {
  margin-top: 20px;
  font-size: 0.8rem;
  color: #666;
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 60px;
}
.product-card {
  background: #fff;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  border-bottom: 3px solid transparent;
  padding-bottom: 20px;
}
.product-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(13, 37, 86, 0.1);
  border-bottom: 3px solid var(--samurai-blue);
}
.product-image-wrapper {
  overflow: hidden;
  aspect-ratio: 4/3;
  margin-bottom: 20px;
}
.product-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s;
}
.product-card:hover .product-image-wrapper img {
  transform: scale(1.1);
}
.product-info {
  padding: 0 20px;
  text-align: center;
}
.product-info h3 {
  font-size: 1.2rem;
  color: var(--samurai-blue);
  margin-bottom: 10px;
}
.product-price {
  display: block;
  color: #888;
  font-family: "Helvetica Neue", sans-serif;
  margin-bottom: 15px;
}
.btn-link {
  display: inline-block;
  border-bottom: 1px solid var(--samurai-blue);
  color: var(--samurai-blue);
  font-size: 0.9rem;
}
/* カテゴリフィルターCSS (新規追加) */
.filter-section {
  margin-top: 60px;
  text-align: center;
}
.filter-trigger-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  padding: 15px 60px;
  border: 1px solid var(--samurai-blue);
  background: #fff;
  color: var(--samurai-blue);
  font-size: 1rem;
  cursor: pointer;
  letter-spacing: 0.1em;
  transition: all 0.3s;
  font-family: "Shippori Mincho", serif;
}
.filter-trigger-btn:hover {
  background: var(--bg-light-blue);
}
.filter-trigger-btn .icon {
  font-size: 1.2rem;
  transition: transform 0.3s;
}
.filter-trigger-btn.active .icon {
  transform: rotate(45deg); /* 開いたときに×にする */
}
.filter-menu {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: all 0.5s ease-in-out;
  margin-top: 20px;
}
.filter-menu.active {
  max-height: 200px; /* メニューの高さに合わせて調整 */
  opacity: 1;
  margin-bottom: 40px;
}
.category-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  padding: 20px 0;
}
.cat-btn {
  padding: 10px 30px;
  border: none;
  background: transparent;
  color: #666;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.3s;
  position: relative;
  font-family: "Shippori Mincho", serif;
}
.cat-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: var(--samurai-blue);
  transition: width 0.3s;
}
.cat-btn:hover, .cat-btn.active {
  color: var(--samurai-blue);
}
.cat-btn.active::after {
  width: 80%;
}
/* 商品グリッド */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 60px;
}
.product-card {
  background: #fff;
  transition: transform 0.4s ease, box-shadow 0.4s ease, opacity 0.4s ease;
  border-bottom: 3px solid transparent;
  padding-bottom: 20px;
}
/* フィルタリング時のアニメーション用 */
.product-card.hidden {
  display: none; /* 非表示 */
}
.product-card.fade-in {
  animation: fadeIn 0.5s ease forwards;
}
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.product-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(13, 37, 86, 0.1);
  border-bottom: 3px solid var(--samurai-blue);
}
.product-image-wrapper {
  overflow: hidden;
  aspect-ratio: 4/3;
  margin-bottom: 20px;
}
.product-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s;
}
.product-card:hover .product-image-wrapper img {
  transform: scale(1.1);
}
.product-info {
  padding: 0 20px;
  text-align: center;
}
.product-info h3 {
  font-size: 1.2rem;
  color: var(--samurai-blue);
  margin-bottom: 10px;
}
.product-price {
  display: block;
  color: #888;
  font-family: "Helvetica Neue", sans-serif;
  margin-bottom: 15px;
}
.category-label {
  display: block;
  font-size: 0.75rem;
  color: var(--samurai-blue-light);
  margin-bottom: 5px;
  opacity: 0.8;
}
.btn-link {
  display: inline-block;
  border-bottom: 1px solid var(--samurai-blue);
  color: var(--samurai-blue);
  font-size: 0.9rem;
}
@media (max-width: 768px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
  .filter-trigger-btn {
    width: 100%;
    padding: 15px 0;
  }
  .category-list {
    gap: 10px;
  }
  .cat-btn {
    padding: 10px 15px;
    font-size: 0.85rem;
  }
}
/* --- カテゴリタイトル (サムライブルーのアウトライン) --- */
.current-category-title {
  text-align: center;
  margin-bottom: 50px;
  position: relative;
  padding: 10px 0;
  overflow: hidden;
}
.current-category-title .en-title {
  display: block;
  font-size: 5rem;
  font-weight: 700;
  font-family: "Helvetica Neue", Arial, sans-serif;
  line-height: 1;
  letter-spacing: 0.05em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(13, 37, 86, 0.2); /* サムライブルーの薄い縁取り */
  transition: all 0.5s ease;
  transform: translateY(0);
  opacity: 1;
}
.current-category-title .ja-title {
  display: block;
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--samurai-blue);
  margin-top: -35px;
  position: relative;
  z-index: 1;
  letter-spacing: 0.2em;
  transition: all 0.5s ease 0.1s;
  opacity: 1;
  transform: translateY(0);
}
.current-category-title.changing .en-title, .current-category-title.changing .ja-title {
  opacity: 0;
  transform: translateY(10px);
}
@media (max-width: 768px) {
  .current-category-title .en-title {
    font-size: 3rem;
  }
  .current-category-title .ja-title {
    margin-top: -20px;
    font-size: 1.1rem;
  }
  .filter-trigger-btn {
    width: 100%;
    padding: 15px 0;
  }
}
/* ページネーション & 戻るボタン */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 60px;
  transition: opacity 0.3s ease;
}
.pagination.hidden {
  display: none;
}
.page-link {
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 40px;
  height: 40px;
  padding: 0 10px;
  border: 1px solid var(--samurai-blue);
  color: var(--samurai-blue);
  text-decoration: none;
  font-family: "Helvetica Neue", sans-serif;
  transition: all 0.3s;
  background: #fff;
}
.page-link:hover, .page-link.active {
  background: var(--samurai-blue);
  color: #fff;
}
.page-ellipsis {
  padding: 0 5px;
  color: #999;
}
.back-to-all-wrapper {
  text-align: center;
  margin-top: 40px;
  display: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.back-to-all-wrapper.visible {
  display: block;
  opacity: 1;
}
.btn-outline {
  display: inline-block;
  border: 1px solid var(--samurai-blue);
  color: var(--samurai-blue);
  padding: 15px 60px;
  font-size: 1rem;
  transition: all 0.3s;
  cursor: pointer;
  background: transparent;
  font-family: "Shippori Mincho", serif;
}
.btn-outline:hover {
  background: var(--samurai-blue);
  color: #fff;
}
/* 商品詳細CSS */
.product-detail-section {
  padding-top: 140px;
  padding-bottom: 100px;
}
.product-content-wrapper {
  display: flex;
  gap: 60px;
  margin-bottom: 80px;
}
.product-gallery {
  flex: 1;
}
.main-image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  margin-bottom: 20px;
}
.thumb-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.thumb-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.3s;
}
.thumb-item img:hover {
  opacity: 1;
}
.product-desc {
  flex: 1;
}
.p-title {
  font-size: 2rem;
  color: var(--samurai-blue);
  margin-bottom: 10px;
  line-height: 1.4;
}
.p-price {
  font-size: 1.5rem;
  font-family: "Helvetica Neue", sans-serif;
  margin-bottom: 30px;
  display: block;
  color: #666;
}
.p-text {
  margin-bottom: 40px;
  text-align: justify;
}
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 40px;
}
.spec-table th, .spec-table td {
  padding: 15px;
  border-bottom: 1px solid #eee;
  text-align: left;
}
.spec-table th {
  width: 30%;
  color: var(--samurai-blue);
  font-weight: normal;
}
@media (max-width: 768px) {
  .product-content-wrapper {
    flex-direction: column;
    gap: 40px;
  }
}

/* 追加実装用のCSS */
    .thumb-item {
        cursor: pointer;
        transition: opacity 0.3s, border-color 0.3s;
        border: 2px solid transparent;
        box-sizing: border-box;
    }
    .thumb-item:hover {
        opacity: 0.8;
    }
    .thumb-item.active {
        border-color: #0D2556; /* サムライブルー */
        opacity: 1;
    }
    .main-image {
        transition: opacity 0.3s ease;
    }
/* 確認画面CSS */
.confirm-section {
  padding-top: 140px;
  padding-bottom: 100px;
}
.page-title {
  text-align: center;
  font-size: 1.8rem;
  color: var(--samurai-blue);
  margin-bottom: 60px;
}
.confirm-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 60px;
  border-top: 2px solid var(--samurai-blue);
}
.confirm-table th, .confirm-table td {
  padding: 20px;
  border-bottom: 1px solid #eee;
  text-align: left;
}
.confirm-table th {
  width: 30%;
  background: var(--bg-light-blue);
  font-weight: normal;
  color: var(--samurai-blue);
}
.btn-area {
  display: flex;
  justify-content: center;
  gap: 20px;
}
.btn {
  padding: 15px 60px;
  cursor: pointer;
  border: 1px solid var(--samurai-blue);
  font-size: 1rem;
  transition: all 0.3s;
  text-decoration: none;
  display: inline-block;
}
.btn-back {
  background: #fff;
  color: var(--samurai-blue);
}
.btn-submit {
  background: var(--samurai-blue);
  color: #fff;
}
.btn-back:hover {
  background: #eee;
}
.btn-submit:hover {
  opacity: 0.8;
}
footer {
  background: #081633;
  color: #8fa1b3;
  padding: 40px;
  text-align: center;
  font-size: 0.75rem;
  margin-top: auto;
}
@media (max-width: 768px) {
  .confirm-table th, .confirm-table td {
    display: block;
    width: 100%;
  }
  .confirm-table th {
    background: transparent;
    padding-bottom: 5px;
    font-weight: bold;
  }
  .confirm-table td {
    padding-top: 0;
  }
}
.complete-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 40px 20px;
  background: var(--bg-light-blue);
}
.msg-title {
  font-size: 2rem;
  color: var(--samurai-blue);
  margin-bottom: 20px;
}
.msg-text {
  margin-bottom: 40px;
  color: #666;
}
.btn-top {
  display: inline-block;
  background: var(--samurai-blue);
  color: #fff;
  padding: 15px 50px;
  text-decoration: none;
  transition: opacity 0.3s;
}
.btn-top:hover {
  opacity: 0.8;
}
/* --- セクションロゴマーク (追加) --- */
.section-logo-mark {
  display: block;
  width: 50px; /* ロゴのサイズ */
  height: auto;
  margin: 0 auto 20px; /* 中央寄せ & タイトルとの余白 */
  opacity: 0.8;
}
/* --- 画面固定の透かしロゴマーク (インパクト版) --- */
.fixed-brand-mark {
  position: fixed;
  bottom: -5%; /* 画面下からはみ出させる */
  right: -5%; /* 画面右からはみ出させる */
  width: 45vw; /* 画面幅の半分近く大きく */
  max-width: 600px; /* PCでの最大サイズ */
  min-width: 300px; /* スマホでの最小サイズ */
  opacity: 0.1; /* 極めて薄く（3〜5%程度が上品） */
  z-index: 90; /* コンテンツより上、ヘッダーより下 */
  pointer-events: none; /* クリックを透過させて邪魔にならないようにする */
	}
  /* filter: grayscale(100%);  色を抜く場合は有効化 */
  /* セレクトボックスの選択肢（option）の背景色を指定し、白文字が見えるように修正 */
  select option {
    background-color: var(--samurai-blue); /* 背景を濃い青に */
    color: #fff; /* 文字を白に */
  }