/* 头部区域 — 方案A 暖胡桃木 */
  #header {
      width: 100%;
      background-color: #3D2314;
      display: flex;
      justify-content: space-between;
      align-content: center;
      align-items: center;
      flex-wrap: wrap;
      padding: 0 20px;
      box-sizing: border-box;
  }

  #header-logo-div {
      margin-left: 0;
      display: inline-block;
      line-height: 34px;
  }

  #header-txt-div {
      line-height: 34px;
  }

  #header-txt-div a {
      text-decoration: none;
      color: rgba(255, 255, 255, 0.9);
      font-size: 12px;
      letter-spacing: 0.5px;
  }

  #header-menu-div {
      display: inline-block;
      font-size: 0;
  }

  #header-img-logo {
      height: 20px;
      vertical-align: middle;
  }

  #header-menu-ul {
      width: 100%;
      list-style: none;
      margin: 0;
      padding: 0;
      height: 100%;
      line-height: 34px;
  }

  #header-menu-ul li {
      display: inline-block;
      font-size: 16px;
      color: rgba(255, 255, 255, 0.85);
      width: 30px;
      text-align: center;
      vertical-align: middle;
      transition: color 0.2s;
  }

  #header-menu-ul li:hover {
      color: #ffffff;
  }

  /* 保留旧 img 兼容性（如后续未替换 FA 图标） */
  #header-menu-ul li img {
      width: 18px;
      vertical-align: middle;
      border-radius: 30%;
      filter: brightness(0) invert(1);
      opacity: 0.85;
  }

  #header-menu-ul li img:hover {
      opacity: 1;
  }