/* ===== 全体背景・文字色 ===== */
body {
  background-color: #1a1f2e;
  color: #d0d6e0;
  font-family: 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', sans-serif;
  font-size: 16px;
  line-height: 1.9;
}

/* ===== ヘッダー全体 ===== */
#blog-title {
  background: linear-gradient(135deg, #0d1321 0%, #1a2a4a 100%);
  border-bottom: 4px solid #00aaff;
  padding: 40px 20px;
  text-align: center;
}

/* ===== ブログタイトル ===== */
#blog-title-inner a {
  color: #ffffff;
  font-size: 32px;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-decoration: none;
  text-transform: uppercase;
  display: block;
  margin-bottom: 10px;
  text-shadow: 0 0 20px rgba(0,170,255,0.4);
}

#blog-title-inner a:hover {
  color: #00aaff;
  text-shadow: 0 0 28px rgba(0,170,255,0.7);
}

/* ===== ブログ説明文 ===== */
.blog-description {
  color: #aab4c4;
  font-size: 14px;
  letter-spacing: 0.12em;
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px solid rgba(0,170,255,0.3);
  display: inline-block;
}

/* ===== ナビゲーション ===== */
.globalheader-inner,
#globalheader-container {
  background-color: #0d1321 !important;
  border-bottom: 2px solid #00aaff !important;
}

/* ===== メインコンテンツエリア ===== */
#wrapper, #content {
  background-color: #1a1f2e;
}

/* ===== 記事カード ===== */
.entry {
  background-color: #242938;
  border: 1px solid #2e3650;
  border-top: 3px solid #00aaff;
  border-radius: 4px;
  padding: 36px;
  margin-bottom: 36px;
  transition: border-color 0.2s;
}

.entry:hover {
  border-top-color: #ff6a00;
}

/* ===== 記事タイトル ===== */
.entry-title a {
  color: #ffffff;
  font-size: 22px;
  font-weight: 900;
  text-decoration: none;
  letter-spacing: 0.06em;
}

.entry-title a:hover {
  color: #00aaff;
}

/* ===== 記事本文 ===== */
.entry-content {
  color: #d0d6e0;
  line-height: 2.0;
}

.entry-content p {
  margin-bottom: 1.4em;
}

/* ===== 見出し h2 ===== */
.entry-content h2 {
  color: #ffffff;
  font-size: 20px;
  font-weight: 900;
  background: linear-gradient(90deg, #0d1f3c, transparent);
  border-left: 5px solid #00aaff;
  padding: 10px 16px;
  margin: 44px 0 18px;
  letter-spacing: 0.06em;
  border-radius: 0 4px 4px 0;
}

/* ===== 見出し h3 ===== */
.entry-content h3 {
  color: #00aaff;
  font-size: 17px;
  font-weight: bold;
  margin: 32px 0 12px;
  padding-left: 10px;
  border-left: 3px solid #ff6a00;
  letter-spacing: 0.04em;
}

/* ===== リンク ===== */
.entry-content a {
  color: #00aaff;
  text-decoration: none;
  border-bottom: 1px solid rgba(0,170,255,0.3);
}

.entry-content a:hover {
  color: #ff6a00;
  border-bottom-color: #ff6a00;
}

/* ===== 太字・強調 ===== */
.entry-content strong {
  color: #ffffff;
  font-weight: 900;
  background: linear-gradient(transparent 60%, rgba(0,170,255,0.2) 60%);
}

/* ===== 記事メタ情報（日付・カテゴリ） ===== */
.entry-date, .entry-categories {
  color: #7a8a9e;
  font-size: 13px;
  letter-spacing: 0.04em;
}

.entry-categories a {
  color: #ffffff;
  background-color: #00aaff;
  border-radius: 2px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: bold;
  text-decoration: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.entry-categories a:hover {
  background-color: #ff6a00;
  border-bottom: none;
}

/* ===== 続きを読むボタン ===== */
.entry-see-more a {
  display: inline-block;
  background-color: #00aaff;
  color: #ffffff;
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 8px 20px;
  border-radius: 2px;
  transition: background-color 0.2s;
  border-bottom: none;
}

.entry-see-more a:hover {
  background-color: #ff6a00;
  border-bottom: none;
}

/* ===== 区切り線 ===== */
hr {
  border: none;
  border-top: 2px solid #2e3650;
  margin: 28px 0;
}

/* ===== コードブロック ===== */
pre, code {
  background-color: #0d1117;
  border: 1px solid #2e3650;
  border-left: 3px solid #00aaff;
  border-radius: 4px;
  color: #00aaff;
  font-size: 14px;
  padding: 2px 8px;
}

/* ===== サイドバー ===== */
#box2 {
  background-color: #1a1f2e;
}

.hatena-module {
  background-color: #242938;
  border: 1px solid #2e3650;
  border-top: 3px solid #