body {
  margin: 0;
  background: #111;
  color: #fff;
  font-family: 'Segoe UI', 'Roboto', 'Arial', sans-serif;
}
.header {
  display: flex;
  align-items: center;
  height: 64px;
  background: #181c20;
  box-shadow: 0 2px 12px #00ffe766;
  padding: 0 0 0 24px;
}
.logo {
  width: 48px;
  height: 48px;
  margin-right: 16px;
  display: flex;
  align-items: center;
}
.site-title {
  font-size: 1.6em;
  color: #00ffe7;
  text-shadow: 0 0 8px #00ffe799;
  letter-spacing: 0.1em;
}
.container {
  display: flex;
  min-height: calc(100vh - 64px);
}
.sidebar {
  width: 240px;
  background: linear-gradient(135deg, #222 60%, #00ffe7 120%);
  box-shadow: 0 0 20px #00ffe7, 0 0 60px #111 inset;
  padding: 30px 10px 30px 10px;
  overflow-y: auto;
  max-height: calc(100vh - 64px);
}
.sidebar ul { list-style: none; padding: 0; margin: 0; }
.sidebar li a {
  color: #00ffe7;
  text-decoration: none;
  display: block;
  margin-bottom: 20px;
  font-size: 1.2em;
  transition: color 0.2s;
}
.sidebar li a:hover, .sidebar li a.active {
  color: #fff;
  text-shadow: 0 0 5px #00ffe7;
}

/* mainの中の枠組み指定 */
.content {
  flex: 1;
  padding: 40px;
  background: rgba(30,30,30,0.98);
  border-radius: 2em 0 0 2em;
  box-shadow: 0 0 40px #00ffe7 inset;
  overflow-y: auto;
  overflow-x: hidden; /* 横方向の溢れを非表示にし、スクロールを禁止する */
  max-height: calc(100vh - 64px);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.daimei{
  font-size: 50px;
  text-shadow: 0 0 10px #00ffe7;
}
.main-inner {
  width: 100%;
  max-width: 920px;
  margin:30px;
  padding: 24px;
  background: rgba(15,15,18,0.7);
  border-radius: 20px;
  box-shadow: 0 0 24px #00ffe7aa;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* 枠組み例：カード二段組 */
.section-row {
  display: flex;
  gap: 32px;
}
.card {
  flex: 1;
  background: linear-gradient(120deg, #191c20 80%, #00ffe7 130%);
  border-radius: 12px;
  box-shadow: 0 0 14px #00ffe790, 0 0 36px #111 inset;
  padding: 24px 18px;
  color: #fff;
  transition: transform 0.2s, box-shadow 0.3s;
  text-decoration: none;  /* 下線も消したい場合はこれを追加 */
}
.card:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 0 24px #00ffe7cc, 0 0 46px #222 inset;
}

h1, h2, h3 {
  text-shadow: 0 0 10px #00ffe7;
  margin-top: 0;
  font-size: 50px;
}
p{
  font-size:22px;
}

.button {
  background: linear-gradient(90deg, #00ffe7 0%, #00ffa3 100%);
  color: #111;
  border: none;
  border-radius: 6px;
  padding: 12px 30px;
  font-size: 1em;
  box-shadow: 0 0 20px #00ffe7;
  transition: background 0.3s, color 0.3s;
}
.button:hover {
  background: #022b2b;
  color: #00ffe7;
  cursor: pointer;
}

/* フッター */
.footer {
  width: 100%;
  background: #181c20;
  box-shadow: 0 -2px 16px #00ffe766;
  font-size: 0.97em;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 30px;
  height: 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
  position: fixed;
  left: 0;
  bottom: 0;
  z-index: 100;
}
.footer.visible { opacity: 1; pointer-events: auto;}
.footer-links {
  display: flex;
  align-items: center;
  gap: 16px;
}
.footer-links a {
  display: flex;
  align-items: center;
  gap: 3px;
  color: #00ffe7;
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}
.footer-links a:hover {
  background: #00ffe711;
  color: #fff;
}
.copyright {
  opacity: 0.7;
  font-size: 0.92em;
  color: #00ffe7;
}
.blender_link{
  color:rgb(110, 211, 255);
}
.link{
  color:rgb(110, 211, 255);
}
.title_link{
  color:rgb(255, 255, 255);
  text-decoration: none;
}
.sidebar::-webkit-scrollbar, .content::-webkit-scrollbar { width: 8px; background: #222;}
.sidebar::-webkit-scrollbar-thumb, .content::-webkit-scrollbar-thumb { background: #00ffe7; border-radius: 4px;}