/* --- ベース --- */
body {
  min-width: 1000px;
  background: #181818;
  color: #f5f5f5;
  font-family: 'Noto Serif JP', serif;

  margin: 0;
  padding: 0;
  line-height: 1.85;
  letter-spacing: 0.04em;
}

/* --- ナビゲーション --- */
nav {
  display: flex;
  justify-content: center;
  gap: 40px;
  background: #222;
  padding: 24px 0 16px 0;
  border-bottom: 2px solid #444;
  font-size: 1.16em;
}
nav a {
  color: #eee;
  text-decoration: none;
  font-weight: bold;
  padding: 8px 14px;
  border-radius: 7px;
  transition: background .17s, color .17s;
}
nav a:hover {
  background: #353535;
  color: #ffd700;
}

/* --- ヘッダー --- */
header {
  text-align: center;
  padding: 60px 8px 30px 8px;
}
header img {
  max-width: 640px;
  width: 98vw;
  margin: 0 auto 24px auto;
  display: block;
  filter: drop-shadow(0 6px 30px #000b);
  border-radius: 26px;
}
header strong {
  display: block;
  font-size: 1.4em;
  margin-top: 12px;
  letter-spacing: 0.18em;
  color: #bbb;
  font-family: 'Yu Gothic', 'Hiragino Sans', 'Meiryo', sans-serif;
}

/* --- メイン見出し --- */
h1 {
  text-align: center;
  font-size: 2.1em;
  margin: 38px 0 20px 0;
  letter-spacing: 0.17em;
  font-weight: 600;
  color: #fff;
}

/* --- セクション見出し --- */
h2, h3, h4 {
  color: #bbb;
  border-left: 7px solid #666;
  padding-left: 16px;
  font-weight: 700;
  background: linear-gradient(90deg, #232323 65%, transparent 100%);
  margin: 38px 0 22px 0;
  letter-spacing: 0.12em;
}
h2 { font-size: 1.33em; }
h3 { font-size: 1.13em; margin-top: 46px; }
h4 { font-size: 1em; margin-top: 0; }

/* --- 実績：文字＋画像2×2 横並び --- */
.performance-flex {
  display: flex;
  gap: 40px;
  align-items: flex-start;
  max-width: 1000px;
  margin: 38px auto;
  padding: 36px 30px;
  background: linear-gradient(120deg, #1b1b1b 95%, #292929 100%);
  border-radius: 20px;
  box-shadow: 0 8px 28px #000b;
  border: 1.8px solid #222;
}
.performance-text {
  flex: 1 1 0%;
  min-width: 260px;
}
.performance-text p {
  margin-bottom: 20px;
}
a.instagram-btn {
  display: inline-flex;
  align-items: center;
  background: #232323;
  color: #fff;
  font-weight: bold;
  font-size: 1.1em;
  padding: 12px 26px;
  border-radius: 10px;
  box-shadow: 0 2px 12px #0006;
  transition: background .2s, color .2s;
  text-decoration: none;
  letter-spacing: 0.14em;
  margin-top: 12px;
}
a.instagram-btn:hover {
  background: #28282b;
  color: #ffd700;
}
.performance-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  min-width: 240px;
  width: 360px;
}
.performance-grid img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: 13px;
  box-shadow: 0 4px 18px #000c;
  background: #232323;
  border: 1.5px solid #343434;
  transition: transform .17s;
}
.performance-grid img:hover {
  transform: scale(1.045);
}

/* --- カード風ブロック --- */
.row-flex, .greeting-flex, .access-2col {
  display: flex;
  align-items: center;
  gap: 40px;
  max-width: 950px;
  margin: 38px auto 34px auto;
  padding: 34px 30px;
  background: linear-gradient(120deg, #1b1b1b 90%, #232323 100%);
  border-radius: 20px;
  box-shadow: 0 8px 28px #000c, 0 1.8px 0 #444 inset;
  border: 1.7px solid #232323;
}
.row-text, .greeting-text, .access-desc {
  flex: 2 1 0%;
}
.row-vline img {
  width: 20px;
  display: block;
  margin: 0 12px;
  filter: brightness(1.13) grayscale(0.2);
}
.row-image img, .greeting-image img {
  width: 240px;
  max-width: 100%;
  border-radius: 14px;
  box-shadow: 0 5px 24px #0009;
  display: block;
  background: #232323;
}
.greeting-image img { width: 210px; border-radius: 18px; }

@media (max-width: 950px) {
  .row-flex, .greeting-flex, .access-2col, .performance-flex {
    flex-direction: column;
    gap: 23px;
    padding: 15px 2vw;
    border-radius: 6vw;
  }
  .row-image img, .greeting-image img, .performance-grid {
    width: 100%;
  }
  .row-vline img {
    width: 13px;
    margin: 8px 0;
  }
  .performance-grid {
    width: 100%;
    min-width: unset;
  }
}

/* --- テーブル・リスト・段落 --- */
dl {
  background: #212121;
  border-radius: 12px;
  padding: 28px 16px 14px 16px;
  margin: 36px auto 24px auto;
  max-width: 580px;
  border: 1.2px solid #333;
  box-shadow: 0 2px 10px #0005;
}
dt {
  font-weight: bold;
  color: #bdbdbd;
  margin-top: 13px;
  font-size: 1.08em;
  letter-spacing: 0.06em;
}
dd {
  margin: 0 0 10px 18px;
  color: #e5e5e5;
  font-size: 1.01em;
}
ul {
  margin: 8px 0 8px 1.2em;
  padding: 0;
  color: #eee;
  font-size: 1em;
}
p {
  margin: 12px 0 12px 0;
  color: #f6f6f6;
  font-size: 1.10em;
}

/* --- hr（区切り線） --- */
hr {
  border: none;
  border-top: 2px solid #353535;
  margin: 38px 0 38px 0;
  width: 94%;
}

/* --- お問い合わせ画像リンク --- */
a img[alt="お問い合わせ"] {
  border-radius: 12px;
  border: 2px solid #333;
  box-shadow: 0 4px 14px #0007;
  transition: box-shadow .16s, border-color .18s;
  margin: 26px 0 14px 0;
  max-width: 260px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}
a img[alt="お問い合わせ"]:hover {
  border-color: #888;
  box-shadow: 0 4px 26px #222a;
}

/* --- フッター --- */
footer {
  text-align: center;
  color: #aaa;
  background: #232323;
  padding: 28px 0 18px 0;
  font-size: 1.08em;
  letter-spacing: 0.11em;
  border-top: 2px solid #353535;
  margin-top: 38px;
}

iframe {
  border-radius: 13px;
  box-shadow: 0 2px 13px #0007;
  border: 1px solid #353535;
}

/* --- 小さなレスポンシブ --- */
@media (max-width: 700px) {
  nav {
    flex-direction: column;
    gap: 11px;
    font-size: 1em;
    padding: 15px 0 7px 0;
  }
  .row-flex, .greeting-flex, .access-2col, .performance-flex {
    padding: 8px 2vw;
    border-radius: 7vw;
  }
  dl {
    padding: 12px 6px 8px 6px;
    border-radius: 6vw;
  }
  .performance-grid {
    grid-template-columns: 1fr;
    gap: 12px;
    min-width: unset;
    width: 100%;
  }



  .row-flex, .greeting-flex, .access-2col, .performance-flex {
  display: flex;
  flex-direction: row;   /* 常に横並び */
  align-items: center;
  gap: 40px;
  max-width: 950px;
  margin: 38px auto 34px auto;
  padding: 34px 30px;
  background: linear-gradient(120deg, #1b1b1b 90%, #232323 100%);
  border-radius: 20px;
  box-shadow: 0 8px 28px #000c, 0 1.8px 0 #444 inset;
  border: 1.7px solid #232323;
  box-sizing: border-box;
}

/* performance-grid も2列固定 */
.performance-grid {
  display: grid;
  grid-template-columns: 1fr 1fr; /* 横並び2列 */
  gap: 22px;
  min-width: 240px;
  width: 360px;
}

@media (max-width: 950px) {
  /* ★ “flex-direction: row;” を消さない！！（ここで書き換えない） */
  /* ただしgapやpaddingだけは調整してもOK */
  .row-flex, .greeting-flex, .access-2col, .performance-flex {
    gap: 14px;
    padding: 10px 2vw;
  }
  .performance-grid {
    width: 98vw;
    min-width: 0;
  }
}

/* さらに小さい画面でも横並びを維持（自動で縮む） */
@media (max-width: 600px) {
  .row-flex, .greeting-flex, .access-2col, .performance-flex {
    gap: 6px;
    padding: 2vw;
  }
  .performance-grid {
    width: 100vw;
    gap: 6px;
  }
}

}