:root{
    --zn-bg: #f6fff7;
    --zn-card: #ffffff;
    --zn-border: #d7efe0;
    --zn-green: #2ea44f;
    --zn-green-2:#1f8a3f;
    --zn-text: #12301b;
    --zn-muted:#4b6b56;
  }

  /* 通用容器：不依赖 Bootstrap */
  .zn-nav-wrap{
    background: var(--zn-bg);
    border-bottom: 1px solid var(--zn-border);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  }
  .zn-nav{
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: center;
  }

  .zn-badge{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--zn-card);
    border: 1px solid var(--zn-border);
    border-radius: 999px;
    color: var(--zn-muted);
    font-size: 14px;
    line-height: 1;
    user-select: none;
    box-shadow: 0 1px 0 rgba(0,0,0,.02);
  }
  .zn-dot{
    width: 10px; height: 10px; border-radius: 50%;
    background: var(--zn-green);
    box-shadow: 0 0 0 3px rgba(46,164,79,.12);
  }

  .zn-link{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--zn-card);
    border: 1px solid var(--zn-border);
    border-radius: 12px;
    color: var(--zn-text);
    text-decoration: none;
    font-size: 16px;          /* 文字更大更清晰 */
    line-height: 1.2;
    box-shadow: 0 1px 0 rgba(0,0,0,.02);
    transition: transform .08s ease, border-color .12s ease, box-shadow .12s ease;
    white-space: nowrap;
  }
  .zn-link:hover{
    border-color: rgba(46,164,79,.55);
    box-shadow: 0 2px 10px rgba(46,164,79,.10);
    transform: translateY(-1px);
  }
  .zn-link strong{
    color: var(--zn-green-2);
    font-weight: 700;
  }
  .zn-link .zn-domain{
    font-size: 13px;
    color: var(--zn-muted);
  }

  /* 顶部：主站链接更突出 */
  .zn-top .zn-link{
    border-left: 4px solid rgba(46,164,79,.60);
  }

  /* 底部：区块样式 */
  .zn-footer-wrap{
    background: #f3fff5;
    border-top: 1px solid var(--zn-border);
    margin-top: 18px;
  }
  .zn-footer{
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 12px 10px;
  }
  .zn-footer-title{
    display:flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
  }
  .zn-footer small{
    color: var(--zn-muted);
    font-size: 13px;
  }
  .zn-footer-links{
    display:flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: center;
    padding-bottom: 10px;
  }

/* 手机端更舒服 */
@media (max-width: 520px){
  .zn-link{
    font-size: 15px;
    padding: 10px 12px;
  }

  .zn-link .zn-domain{
    display: inline;        /* 确保显示 */
    font-size: 12px;        /* 更小 */
    opacity: 0.7;           /* 更淡 */
  }
}


/* =========================================
   Footer 分组（class版）：永不依赖 nth-child
========================================= */

/* 把 footer 变成“竖向分组”，每组内部再 flex */
.zn-footer-groups{
  display:flex;
  flex-direction:column;
  gap:12px;              /* 组与组之间的间距：统一且稳定 */
}

/* 每一组内部：按钮自动换行、居中 */
.zn-tier{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:6px 12px;         /* 行间距 + 列间距 */
}

/* 每组的“导航条”（整行大条）：真正 100% 宽 */
.zn-tier-head{
  flex: 0 0 100%;        /* = flex-grow:0; flex-shrink:0; flex-basis:100% */
  width: 100%;
  box-sizing: border-box;
  justify-content: space-between; /* 左标题 + 右域名，更像整行条 */
  padding: 12px 16px;
  border-radius: 18px;
}

/* 让分组容器更像“行布局”，避免个别元素收缩 */
.zn-tier{
  width: 100%;
  box-sizing: border-box;
}


/* 统一按钮高度节奏 */
.zn-tier .zn-link{
  min-height:20px;
  align-items:center;
}

/* —— A：在线精选（最突出）—— */
.zn-tier-core .zn-link{
  background:#eaffef;
  border-left:6px solid var(--zn-green);
}
.zn-tier-core .zn-link strong{ font-weight:800; color:var(--zn-green-2); }
.zn-tier-core .zn-link .zn-domain{ font-weight:600; opacity:.95; }

/* —— B：资料检索（次突出）—— */
.zn-tier-lib .zn-link{
  background:#ffffff;
  border-left:4px solid rgba(46,164,79,.45);
}
.zn-tier-lib .zn-link strong{ font-weight:700; color:rgba(31,138,63,.92); }
.zn-tier-lib .zn-link .zn-domain{ font-weight:500; opacity:.88; }

/* —— C：事工延伸（更淡更细）—— */
.zn-tier-ext .zn-link{
  background:#f8fffa;
  border-left:3px solid rgba(46,164,79,.22);
}
.zn-tier-ext .zn-link strong{ font-weight:600; color:rgba(31,138,63,.75); }
.zn-tier-ext .zn-link .zn-domain{ font-weight:400; opacity:.75; }

/* —— D：外围服务（最淡最细）—— */
.zn-tier-out .zn-link{
  background:#fcfffd;
  border-left:3px dashed rgba(46,164,79,.22);
}
.zn-tier-out .zn-link strong{ font-weight:520; color:rgba(31,138,63,.60); }
.zn-tier-out .zn-link .zn-domain{ font-weight:350; opacity:.62; }

/* 导航条里的域名稍微清楚一点（避免太淡） */
.zn-tier-head .zn-domain{
  opacity:.9 !important;
}

/* 手机端：保持舒适 */
@media (max-width:520px){
  .zn-footer-groups{ gap:16px; }
  .zn-tier{ gap:10px 10px; }
  .zn-tier-head{ padding:12px 14px; }
}