/* 页面背景：淡白墙 */
body {
  margin: 0;
  padding: 0;
  background: linear-gradient(145deg, #ffffff, #f2f2f2);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
 font-family: "Noto Sans SC", "Noto Serif SC", cursive;
}

/* 便利贴主体 */
.note {
  background: #fff7c0; /* 🌟 调整为淡黄 */
  width: 440px;
  padding: 28px 34px;
  border-radius: 10px;
  box-shadow:
    0 3px 8px rgba(0, 0, 0, 0.15),
    0 10px 25px rgba(0, 0, 0, 0.1);
  transform: rotate(-1.2deg);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}


/* 悬停浮起 */
.note:hover {
  transform: rotate(0deg) scale(1.02);
  box-shadow:
    0 6px 12px rgba(0, 0, 0, 0.2),
    0 16px 30px rgba(0, 0, 0, 0.15);
}

/* 标题 */
.note h1 {
  margin-top: 0;
  margin-bottom: 18px;
  text-align: center;
  font-size: 1.8rem;
  color: #333;
}

/* 正文 */
.note p {
  margin: 10px 0;
  font-size: 1.1rem;
  line-height: 1.9;
  color: #222;
  text-indent: 2em;
}

/* 响应式 */
@media (max-width: 480px) {
  .note {
    width: calc(100% - 40px);
    padding: 20px;
    transform: none;
  }
}

/* “开始调查”按钮 */
.start-btn {
  display: block;               /* 居中必须 block */
  margin: 18px auto 0 auto;     /* 上间距18px，下自动 */
  padding: 6px 18px;            /* 小巧尺寸 */
  background-color: #a8cbe3;    /* 🌿 柔和淡蓝色，和米黄搭配 */
  color: #1e3a5f;               /* 字体深蓝灰，清晰 */
  text-decoration: none;
  border-radius: 6px;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  transition: all 0.25s ease;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  text-align: center;
}

/* 悬停效果（轻微浮起 + 颜色略亮） */
.start-btn:hover {
  background-color: #93b8dc;
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
}