body {
  font-family: "Hiragino Sans", "Yu Gothic", sans-serif;
  background-color: #f8f8f8;
  color: #333;
  padding: 30px;
}

h1 {
  text-align: center;
  color: #222;
  margin-bottom: 40px;
}

.keyword-item {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
  padding: 8px 12px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
  transition: transform 0.2s ease;
}

.keyword-item:hover {
  transform: translateY(-2px);
}

.rank-number {
  font-size: 1.4em;
  font-weight: 600;
  color: #555;
  background: linear-gradient(135deg, #d9d9d9, #b0b0b0);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 15px;
  box-shadow: inset 0 1px 3px rgba(255,255,255,0.6),
              0 2px 5px rgba(0,0,0,0.1);
}

.waku {
  text-decoration: none;
  font-size: 1.1em;
  color: #222;
  flex: 1;
  transition: color 0.2s;
}

.waku:hover {
  color: #0077cc;
}