/* 背景与全局字体 */
@import url('https://fonts.googleapis.com/css2?family=Quicksand:wght@400;600&display=swap');

body {
  background: #f9f5ef url('https://www.transparenttextures.com/patterns/paper-fibers.png');
  font-family: 'Quicksand', sans-serif;
  font-size: 14px;
  color: #4e3b2c;
  margin: 0;
  padding: 25px;
}

/* 主体框 */
.main {
  width: 780px;
  background: #fffdf9;
  border: 2px solid #d7c2a3;
  box-shadow: 0 0 10px rgba(130, 100, 60, 0.1);
  border-radius: 10px;
  margin: 0 auto;
  padding: 15px;
}

/* 标题 */
header {
  text-align: center;
  border-bottom: 1px dashed #c7a97a;
  padding-bottom: 10px;
  margin-bottom: 15px;
}
header h1 {
  font-family: 'Georgia', serif;
  font-size: 30px;
  color: #7b5e3b;
  letter-spacing: 1px;
  margin: 0;
}
.subtitle {
  color: #a17d55;
  font-style: italic;
  font-size: 13px;
}

/* 三栏结构 */
.content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 15px;
}

/* 左右栏 */
.left, .right {
  width: 160px;
  background: #f6efe4;
  border: 1px solid #d4bca2;
  border-radius: 8px;
  padding: 10px;
}

.left b, .right b {
  color: #6a4d32;
  font-size: 15px;
}

.left a, .right a {
  color: #b06c3b;
  text-decoration: none;
}
.left a:hover, .right a:hover {
  text-decoration: underline;
}

/* 中间主区 */
.center {
  flex: 1;
  background: #fff9f1;
  border: 1px solid #dec8aa;
  border-radius: 10px;
  padding: 14px;
  line-height: 1.6em;
  color: #4a3c2b;
}

/* 更新区块 */
.updates {
  margin-top: 15px;
  background: #f8f1e4;
  border: 1px dashed #cfae83;
  border-radius: 10px;
  padding: 12px;
}
.updates h2 {
  color: #7c5636;
  font-size: 16px;
  border-bottom: 1px dashed #caa77e;
  padding-bottom: 4px;
  margin-bottom: 8px;
}
.updates li {
  margin: 6px 0;
  line-height: 1.4em;
}
.updates li span {
  font-weight: bold;
  color: #8c613a;
}

/* 装饰小图 */
.corner-deco {
  position: fixed;
  bottom: 20px;
  left: 25px;
  width: 100px;
  opacity: 0.9;
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

/* 响应式 */
@media (max-width: 820px) {
  .content {
    flex-direction: column;
    align-items: center;
  }
  .left, .right {
    width: 100%;
  }
}