/* ===== 古诗词网 全局样式 - 方案C湖水绿 ===== */

:root {
  --c1: #4aada0;
  --c2: #3a9488;
  --c3: #d4a843;
  --c4: #1a2a2a;
  --c5: #4a5e5e;
  --c6: #8a9e9e;
  --c7: #f5f9f8;
  --c8: #dce8e6;
  --c9: #fff;
  --fs: 16px;
  /* 统一字号体系：标题→正文→副文字→极小字 */
  --fs1: 18px;
  --fs2: 16px;
  --fs3: 14px;
  --fs4: 12px;
  --ff: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mw: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font: var(--fs)/1.7 var(--ff); color: var(--c4); background: var(--c9); }
a { color: var(--c4); text-decoration: none; }
a:hover { color: var(--c1); }
ul, li { list-style: none; }
img { max-width: 100%; vertical-align: middle; }

/* ===== 头部 #hd ===== */
#hd { background: var(--c9); border-bottom: 2px solid var(--c1); }
#hd > div { max-width: var(--mw); margin: 0 auto; padding: 16px 20px; display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
#hd .lo { flex-shrink: 0; }
#hd .lo a { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 700; color: var(--c1); white-space: nowrap; }
#hd .lo img { width: 132px; height: 93px; display: block; }

/* 搜索 */
#hd .sk { display: flex; gap: 0; flex: 1; min-width: 0; align-items: center; border: 2px solid var(--c1); border-radius: 6px; overflow: hidden; }
#hd .st { height: 44px; padding: 0 12px; border: none; background: var(--c7); font-size: var(--fs3); outline: none; border-right: 1px solid var(--c8); }
#hd .si { flex: 1; min-width: 0; height: 44px; padding: 0 14px; border: none; font-size: var(--fs2); outline: none; }
#hd .sb { height: 44px; padding: 0 26px; background: var(--c1); color: var(--c9); border: none; font-size: var(--fs2); cursor: pointer; font-weight: 500; transition: background .2s; }
#hd .sb:hover { background: var(--c2); }

/* 导航 */
#hd nav { width: 100%; display: flex; flex-wrap: wrap; gap: 0; padding-top: 10px; border-top: 1px solid var(--c8); margin-top: 6px; }
#hd nav a { flex: 1; text-align: center; padding: 10px 8px; font-size: 17px; color: var(--c5); transition: color .2s; font-weight: 500; }
#hd nav a:hover { color: var(--c1); }
#hd nav a.cur { color: var(--c1); font-weight: 600; }

/* 汉堡按钮（仅手机端显示） */
#hd .nav-toggle { display: none; width: 40px; height: 40px; background: var(--c1); border: none; border-radius: 8px; cursor: pointer; padding: 0; align-items: center; justify-content: center; flex-shrink: 0; position: relative; z-index: 1001; color: #fff; transition: background .2s, transform .2s; box-shadow: 0 2px 6px rgba(74,173,160,.35); }
#hd .nav-toggle:hover { background: var(--c2); }
#hd .nav-toggle:active { transform: scale(.95); }
#hd .nav-toggle svg { display: block; width: 22px; height: 22px; }
#hd .nav-toggle svg path { stroke: #fff; }
#hd .nav-toggle .nav-toggle-close { display: none; }
#hd .nav-toggle[aria-expanded="true"] .nav-toggle-open { display: none; }
#hd .nav-toggle[aria-expanded="true"] .nav-toggle-close { display: block; }

/* ===== 主体 ===== */
main { max-width: var(--mw); margin: 0 auto; padding: 24px 20px; }

/* 面包屑 */
.bc { font-size: 14px; color: var(--c6); margin-bottom: 16px; }
.bc a { color: var(--c6); }
.bc a:hover { color: var(--c1); }

/* ===== 布局 ===== */
.wrap { display: flex; gap: 28px; align-items: flex-start; }
.mc { flex: 1; min-width: 0; }
.sd { width: 320px; flex-shrink: 0; }

/* ===== 区块标题 ===== */
.sh { font-size: var(--fs1); font-weight: 600; color: var(--c4); padding: 12px 0; border-bottom: 2px solid var(--c1); margin-bottom: 14px; }
.sh + .more { float: right; margin-top: -38px; font-size: var(--fs3); color: var(--c1); }
.more:hover { text-decoration: underline; }

/* ===== 通用列表项（诗词） ===== */
.li { display: grid; grid-template-columns: 56px 1fr; column-gap: 14px; row-gap: 4px; padding: 14px 12px; margin-bottom: 6px; background: var(--c9); border-radius: 6px; border-bottom: 1px dashed var(--c8); }
.li:last-child { border-bottom: none; margin-bottom: 0; }
.av { width: 56px; height: 56px; border-radius: 6px; object-fit: cover; flex-shrink: 0; border: 1px solid var(--c8); grid-row: 1 / span 3; align-self: start; }
.li h3 { font-size: var(--fs2); font-weight: 500; margin-bottom: 2px; }
.li h3 a { color: var(--c4); margin-right: 10px; }
.li h3 a:hover { color: var(--c1); }
.au { font-size: var(--fs3); color: var(--c6); font-weight: normal; }
.au a { color: var(--c1); }
.au em { font-style: normal; color: var(--c6); }
.lc-body { font-size: var(--fs3); color: var(--c5); line-height: 1.8; text-align: center; margin-top: 6px; padding-left: 0; word-break: break-word; }
.lc-body p { margin-bottom: 0; }
.au time { font-size: var(--fs4); color: var(--c6); margin-left: 6px; }

/* ===== 标签 ===== */
.tg { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.t { display: flex; align-items: center; justify-content: center; padding: 8px 6px; background: var(--c9); color: var(--c5); font-size: var(--fs3); border-radius: 4px; border: 1px solid var(--c8); transition: all .2s; text-align: center; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.t:hover { background: var(--c1); color: var(--c9); border-color: var(--c1); }

/* ===== 侧边栏 ===== */
.sw { margin-bottom: 20px; background: var(--c7); border-radius: 8px; padding: 18px; }
.rl { display: flex; flex-direction: column; }
.ri { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px solid rgba(0,0,0,.04); font-size: 14px; color: var(--c4); }
.ri:last-child { border-bottom: none; }
.ri:hover { color: var(--c1); }
.rn { width: 22px; height: 22px; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 600; color: var(--c9); background: var(--c8); border-radius: 4px; flex-shrink: 0; }
.ri:nth-child(1) .rn { background: var(--c1); }
.ri:nth-child(2) .rn { background: var(--c3); }
.ri:nth-child(3) .rn { background: #8a9e9e; }

/* ===== 页脚 #ft ===== */
#ft { background: var(--c7); border-top: 2px solid var(--c1); margin-top: 40px; padding: 36px 20px 24px; }
.fw { max-width: var(--mw); margin: 0 auto; display: flex; gap: 50px; flex-wrap: wrap; }
.fc { min-width: 140px; }
.fc h3 { font-size: 16px; margin-bottom: 12px; color: var(--c4); }
.fc a { display: block; font-size: 14px; color: var(--c5); margin-bottom: 8px; }
.fc a:hover { color: var(--c1); }
.fc p { font-size: 14px; color: var(--c5); }
.fb { max-width: var(--mw); margin: 24px auto 0; padding-top: 18px; border-top: 1px solid var(--c8); text-align: center; font-size: 14px; color: var(--c6); }
.fb a { color: var(--c5); margin: 0 8px; }
.fb p { margin-top: 8px; }

/* 懒加载 */
.lazy-image { transition: opacity .3s; }
.lazy-image[data-src] { opacity: 0; }
.lazy-image.loaded, .lazy-image:not([data-src]) { opacity: 1; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  #hd > div { padding: 10px 12px; flex-wrap: wrap; align-items: center; gap: 10px; }
  #hd .lo { flex: 1; min-width: 0; text-align: left; }
  #hd .lo a { justify-content: flex-start; }
  #hd .lo img { width: 60px; height: 42px; margin: 0; }
  #hd .nav-toggle { display: inline-flex; order: 2; }
  #hd .sk { order: 3; flex-basis: 100%; max-width: none; }
  #hd .st, #hd .si, #hd .sb { height: 40px; }
  #hd nav {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 70%;
    max-width: 280px;
    background: var(--c9);
    border-right: 2px solid var(--c1);
    box-shadow: 4px 0 16px rgba(0,0,0,.15);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    padding: 60px 0 16px;
    border-top: none;
    margin-top: 0;
    transform: translateX(-100%);
    transition: transform .3s ease;
    overflow-y: auto;
  }
  #hd nav.open { transform: translateX(0); }
  #hd nav a { flex: none; text-align: left; padding: 14px 20px; font-size: var(--fs2); border-bottom: 1px solid var(--c8); }
  #hd nav a:last-child { border-bottom: none; }

  /* 遮罩层 */
  body.nav-open::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 999;
    animation: nav-fade-in .25s ease;
  }
  @keyframes nav-fade-in { from { opacity: 0; } to { opacity: 1; } }

  main { padding: 0; }
  .wrap { flex-direction: column; gap: 0; }
  .mc { width: 100%; }
  .sd { width: 100%; }
  .sh { padding: 12px 12px 10px; font-size: 18px; font-weight: 600; }
  .fw { flex-direction: column; gap: 16px; }
  #ft { padding: 20px 12px 16px; margin-top: 16px; }
  .fc { min-width: auto; width: 100%; }
  .fc h3 { font-size: 16px; margin-bottom: 8px; font-weight: 600; }
  .fc a { font-size: 15px; margin-bottom: 6px; display: inline-block; margin-right: 12px; }
  .fb { font-size: 14px; padding-top: 12px; }
  .fb a { margin: 0 4px; font-size: 14px; }
  .tg { grid-template-columns: 1fr 1fr; }
  .li { padding: 12px; column-gap: 12px; grid-template-columns: 48px 1fr; }
  .av { width: 48px; height: 48px; }
  .li h3 { font-size: 17px; font-weight: 500; }
  .li h3 a { font-weight: 500; }
  .au { font-size: 15px; }
  .lc-body { text-align: left; line-height: 1.8; font-size: 15px; }
  .au time { font-size: 13px; }
  /* 全局移动端字重增强 */
  body { font-weight: 400; -webkit-text-size-adjust: 100%; }
  .t { font-size: 15px; padding: 10px 8px; font-weight: 500; }
  .ri { font-size: 15px; }
  .rn { font-size: 13px; width: 24px; height: 24px; }
  #hd .st { font-size: 15px; }
  #hd .si { font-size: 16px; }
  #hd .sb { font-size: 16px; font-weight: 600; padding: 0 20px; }
  .bc { font-size: 14px; }
}

@media (max-width: 480px) {
  :root {
    --fs: 16px;
    --fs1: 19px;
    --fs2: 17px;
    --fs3: 15px;
    --fs4: 13px;
  }
  #hd .lo img { width: 48px; height: 34px; }
  #hd .st, #hd .si, #hd .sb { height: 40px; }
  #hd .sk { flex-wrap: wrap; }
  #hd nav a { padding: 10px 12px; }
  .tg { grid-template-columns: 1fr 1fr; }
  .li { grid-template-columns: 44px 1fr; }
  .av { width: 44px; height: 44px; }
}