body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #0f0f12;
  color: #ffffff;
}

header {
  background: #b3001b;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: bold;
  font-size: 18px;
}

nav a {
  color: white;
  margin-left: 15px;
  text-decoration: none;
  font-size: 14px;
}

nav a:hover {
  color: #ff2e4d;
}

.hero {
  text-align: center;
  padding: 100px 20px;
  background: linear-gradient(180deg, #b3001b 0%, #0f0f12 100%);
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 20px;
}

.about h2 {
  font-size: 28px;
  margin-bottom: 30px;
  color: #ff2e4d;
}


.countdown {
  margin: 30px 0;
  font-size: 22px;
  font-weight: bold;
  color: #ff2e4d;
}

.main-btn {
  display: inline-block;
  background: #ff2e4d;
  padding: 15px 35px;
  margin-top: 20px;
  color: white;
  text-decoration: none;
  border-radius: 30px;
  font-size: 18px;
  transition: 0.3s;
}

.main-btn:hover {
  background: white;
  color: #b3001b;
}

.notice {
  margin-top: 30px;
  font-size: 14px;
  opacity: 0.8;
}

footer {
  text-align: center;
  padding: 20px;
  background: #1a1a22;
}

.about {
  padding: 80px 20px;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;   /* ← 追加 */
}


.notes {
  list-style: none;
  padding: 0;
}

.notes li {
  margin-bottom: 20px;
  line-height: 1.7;
}

a {
  color: #4dff8b;      /* 通常リンク：明るい赤ピンク寄り */
  text-decoration: none;
  transition: 0.3s;
}

a:hover {
  color: #ffffff;      /* ホバー時は白 */
  text-shadow: 0 0 8px #4dff8b;  /* 赤グロー効果 */
}

a:visited {
  color: #4dff8b;      /* 訪問済みは少し暗め */
}

.notes li {
  margin-bottom: 20px;
  line-height: 1.8;
}

.about h2 {
  margin-top: 50px;
}

.notes li::marker {
  color: #ff2e4d;
}