body {
  margin: 0;
  padding: 0;
  font-family: 'Roboto', 'Montserrat', sans-serif;
  background: linear-gradient(135deg, #232526 0%, #414345 100%);
  color: #fff;
  min-height: 100vh;
}
.container {
  max-width: 700px;
  margin: 60px auto;
  background: rgba(30, 30, 40, 0.6); /* 透明度を0.6に変更 */
  border-radius: 18px;
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  padding: 40px 32px;
  box-sizing: border-box;
  width: calc(100% - 40px);
  position: relative;
}
.gravatar {
  position: absolute;
  top: 30px;
  right: 30px;
  z-index: 1000;
  border-radius: 80%;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  padding: 4px;
  text-align: right;
}

.gravatar img {
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.8rem;
  letter-spacing: 2px;
  margin-bottom: 8px;
  color: #00ffe7;
  text-shadow: 0 2px 16px #00ffe7aa;
}
.subtitle {
  font-size: 1.2rem;
  color: #b2b2b2;
  margin-bottom: 32px;
}
.profile-section {
  margin-bottom: 32px;
}
.profile-section h2 {
  font-size: 1.3rem;
  color: #00ffe7;
  margin-bottom: 10px;
  border-left: 4px solid #00ffe7;
  padding-left: 10px;
  letter-spacing: 1px;
}
.profile-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.profile-list li {
  margin-bottom: 10px;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
}
.profile-list span {
  min-width: 110px;
  color: #00ffe7;
  font-weight: bold;
  margin-right: 12px;
  font-family: 'Montserrat', sans-serif;
}
.hobby-list {
  display: flex;
  gap: 18px;
  margin-top: 10px;
}
.hobby-item {
  background: #232526;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 1rem;
  color: #fff;
  box-shadow: 0 2px 8px #00ffe733;
  transition: transform 0.2s, background 0.2s, color 0.2s;
  cursor: pointer;
}
.hobby-item:hover {
  background: #00ffe7;
  color: #232526;
  transform: scale(1.08);
}
.hobby-item.active {
  background: #fff;
  color: #00ffe7;
  font-weight: bold;
}

#particles-js {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  min-width: 100vw;
  min-height: 100vh;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}
.count-particles {
  position: fixed;
  top: 10px;
  left: 10px;
  color: #fff;
  z-index: 10;
  font-size: 14px;
  pointer-events: none;
}

@media (max-width: 600px) {
  .container {
    padding: 18px 6px;
  }
  h1 {
    font-size: 2rem;
  }
}