/* 观象堂 · 象数研习 板块样式
 * 宣纸底 + 玄青字 + 暖金/朱砂点睛，与官网同一视觉体系，偏向长文阅读。
 */
:root {
  --ink: #16283C;
  --ink-deep: #0F1B2A;
  --paper: #F7F2E8;
  --paper-2: #EFE7D5;
  --card: #FDFBF5;
  --gold: #B8894B;
  --gold-soft: #D8BC8A;
  --cinnabar: #B03A2A;
  --text: #2E2C27;
  --muted: #7A7263;
  --line: #DDD2BB;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--paper);
  color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
.serif { font-family: "Songti SC", "STSong", "SimSun", serif; }
a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--cinnabar); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* ---------- 导航 ---------- */
.site-nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(247, 242, 232, .96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 58px; }
.brand { display: flex; align-items: center; gap: 9px; color: var(--ink); }
.brand .seal {
  display: inline-flex; align-items: center; justify-content: center;
  width: 27px; height: 27px; border: 1.5px solid var(--cinnabar);
  color: var(--cinnabar); font-size: 14px; border-radius: 4px;
}
.brand b { font-size: 17px; letter-spacing: 2.5px; font-weight: 600; }
.brand span.small { color: var(--muted); font-size: 12px; letter-spacing: 1px; }
.back { font-size: 13px; color: var(--muted); }
.back:hover { color: var(--cinnabar); }

.subnav { border-bottom: 1px solid var(--line); background: var(--paper-2); }
.subnav .wrap { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.subnav .wrap::-webkit-scrollbar { display: none; }
.subnav a {
  flex: none; padding: 11px 16px 9px;
  color: var(--muted); font-size: 14px; letter-spacing: 1px;
  border-bottom: 2px solid transparent; white-space: nowrap;
}
.subnav a:hover { color: var(--ink); }
.subnav a.on { color: var(--cinnabar); border-bottom-color: var(--cinnabar); font-weight: 500; }

/* ---------- 页头 ---------- */
.page-head { padding: 44px 0 32px; }
.page-head .kicker { color: var(--cinnabar); font-size: 12px; letter-spacing: 4px; margin-bottom: 10px; }
.page-head h1 { font-size: 32px; letter-spacing: 5px; font-weight: 500; color: var(--ink); margin-bottom: 10px; }
.page-head p { color: var(--muted); font-size: 14px; max-width: 720px; }

/* ---------- 通用容器 ---------- */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: 26px 28px;
}
.panel-title { font-size: 18px; letter-spacing: 2px; color: var(--ink); font-weight: 600; margin-bottom: 16px; }
.note-box {
  margin-top: 28px; padding: 16px 20px;
  border-left: 3px solid var(--gold); background: rgba(184, 137, 75, .06);
  color: var(--muted); font-size: 12.5px; line-height: 1.9; border-radius: 4px;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 18px; border: 1px solid var(--gold); border-radius: 6px;
  background: transparent; color: var(--gold);
  font-size: 14px; font-family: inherit; letter-spacing: 1px;
  cursor: pointer; transition: all .18s;
}
.btn:hover { background: rgba(184, 137, 75, .1); color: var(--cinnabar); border-color: var(--cinnabar); }
.btn.solid { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.btn.solid:hover { background: var(--cinnabar); border-color: var(--cinnabar); }

/* ---------- 板块首页入口 ---------- */
.entries { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 30px; }
.entry {
  display: block; background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: 26px 26px 22px; transition: all .2s; color: var(--text);
}
.entry:hover { border-color: var(--gold); box-shadow: 0 8px 24px rgba(22, 40, 60, .07); transform: translateY(-2px); }
.entry .no { font-family: "Songti SC", serif; color: var(--gold-soft); font-size: 13px; letter-spacing: 3px; }
.entry h3 { font-size: 20px; letter-spacing: 2px; color: var(--ink); margin: 6px 0 8px; font-weight: 600; }
.entry p { color: var(--muted); font-size: 13.5px; }
.entry .state { display: inline-block; margin-top: 14px; font-size: 12px; letter-spacing: 1px; color: var(--cinnabar); border: 1px solid rgba(176, 58, 42, .35); border-radius: 999px; padding: 1px 10px; }
.entry.ready .state { color: var(--gold); border-color: rgba(184, 137, 75, .5); }

/* ---------- 万年历 ---------- */
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.toolbar .month { font-size: 22px; letter-spacing: 3px; color: var(--ink); font-family: "Songti SC", serif; min-width: 150px; }
.toolbar .spacer { flex: 1; }
.toolbar input[type="date"] {
  padding: 8px 12px; border: 1px solid var(--line); border-radius: 6px;
  background: #fff; color: var(--text); font-family: inherit; font-size: 14px;
}
.toolbar input[type="date"]:focus { outline: none; border-color: var(--gold); }

.detail { margin-bottom: 22px; }
.detail .solar { font-size: 26px; letter-spacing: 2px; color: var(--ink); font-family: "Songti SC", serif; }
.detail .solar small { font-size: 14px; color: var(--muted); font-family: inherit; letter-spacing: 1px; margin-left: 10px; }
.detail .gz {
  margin-top: 14px; display: flex; flex-wrap: wrap; gap: 10px 26px;
  font-size: 15px; color: var(--text);
}
.detail .gz b { color: var(--cinnabar); font-weight: 500; letter-spacing: 1px; }
.detail .gz .k { color: var(--muted); font-size: 12.5px; letter-spacing: 1px; margin-right: 4px; }
.detail .term-line {
  margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line);
  font-size: 13.5px; color: var(--muted); line-height: 2;
}
.detail .term-line em { color: var(--gold); font-style: normal; }

.hours { display: flex; gap: 6px; overflow-x: auto; margin-top: 14px; padding-bottom: 2px; }
.hours div {
  flex: none; min-width: 52px; text-align: center; padding: 6px 4px;
  border: 1px solid var(--line); border-radius: 6px; background: #fff;
}
.hours div.hi { border-color: var(--cinnabar); background: rgba(176, 58, 42, .05); }
.hours div span { display: block; font-size: 11px; color: var(--muted); }
.hours div b { display: block; font-size: 13px; color: var(--ink); font-weight: 500; }

.cal { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.cal .dow {
  background: var(--paper-2); padding: 9px 0; text-align: center;
  font-size: 12.5px; color: var(--muted); letter-spacing: 1px;
}
.cell {
  background: var(--card); min-height: 64px; padding: 7px 8px 6px;
  cursor: pointer; transition: background .15s; position: relative;
}
.cell:hover { background: #F5EEDE; }
.cell.blank { background: #F2EBDD; cursor: default; }
.cell .num { font-size: 17px; color: var(--ink); line-height: 1.2; }
.cell .lun { font-size: 11px; color: var(--muted); line-height: 1.5; }
.cell .lun.first { color: var(--cinnabar); }
.cell .term { font-size: 11px; color: var(--gold); line-height: 1.5; }
.cell.today { background: rgba(176, 58, 42, .05); }
.cell.today .num { color: var(--cinnabar); font-weight: 600; }
.cell.sel { box-shadow: inset 0 0 0 2px var(--cinnabar); }
.cell.off .num { color: #B9B0A0; }

/* ---------- 古籍文库 ---------- */
.wk { display: grid; grid-template-columns: 250px 1fr; gap: 26px; align-items: start; }
.wk-side {
  position: sticky; top: 112px; max-height: calc(100vh - 140px); overflow-y: auto;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 10px;
}
.wk-side input {
  width: 100%; padding: 8px 10px; margin-bottom: 10px;
  border: 1px solid var(--line); border-radius: 6px;
  background: #fff; font-family: inherit; font-size: 13px;
}
.wk-side input:focus { outline: none; border-color: var(--gold); }
.wk-item {
  display: block; padding: 7px 10px; border-radius: 6px;
  font-size: 13.5px; color: var(--text); cursor: pointer; line-height: 1.6;
  text-decoration: none;
}
.wk-item:hover { background: var(--paper-2); }
.wk-item.on { background: rgba(184, 137, 75, .12); color: var(--cinnabar); }
.wk-item .idx { color: var(--gold-soft); font-size: 11.5px; margin-right: 6px; }
.wk-group { font-size: 11.5px; color: var(--muted); letter-spacing: 2px; padding: 12px 10px 4px; }

.wk-books { display: flex; gap: 6px; margin-bottom: 10px; flex-wrap: wrap; }
.wk-book {
  flex: 1; min-width: 58px; padding: 7px 6px;
  border: 1px solid var(--line); border-radius: 6px; background: #fff;
  color: var(--muted); font-family: inherit; font-size: 12.5px; letter-spacing: 1px;
  cursor: pointer; transition: all .16s;
}
.wk-book:hover { border-color: var(--gold-soft); color: var(--text); }
.wk-book.on { border-color: var(--gold); background: rgba(184, 137, 75, .1); color: var(--cinnabar); }

.wk-main { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 32px 38px 28px; min-height: 400px; }
.wk-main h2 { font-size: 26px; letter-spacing: 4px; color: var(--ink); font-weight: 500; text-align: center; }
.wk-main .meta { text-align: center; color: var(--muted); font-size: 12.5px; letter-spacing: 1px; margin: 8px 0 24px; }
.wk-body p { font-size: 16px; line-height: 2.15; color: var(--text); margin-bottom: 8px; text-indent: 0; white-space: pre-line; }
.wk-body p .lb { color: var(--cinnabar); font-size: 13px; letter-spacing: 1px; margin-right: 10px; }
.wk-body .plain { text-indent: 2em; }
.wk-pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--line); }
.wk-pager a { font-size: 13.5px; }
.wk-pager a.dis { color: #C4BCAC; pointer-events: none; }
.wk-status { text-align: center; color: var(--muted); padding: 60px 0; font-size: 14px; }
.wk-hit { display: block; padding: 12px 14px; border-bottom: 1px dashed var(--line); }
.wk-hit b { display: block; color: var(--ink); font-size: 15px; margin-bottom: 3px; }
.wk-hit .src { color: var(--gold); font-size: 11.5px; margin-left: 8px; letter-spacing: 1px; }
.wk-hit span { color: var(--muted); font-size: 12.5px; }
.wk-hit mark { background: rgba(184, 137, 75, .25); color: inherit; }
.wk-cases { margin-top: 34px; padding-top: 16px; border-top: 1px solid var(--line); }
.wk-cases-h { font-size: 12.5px; color: var(--muted); letter-spacing: 1px; padding: 0 4px 6px; }
.wk-cases .wk-hit b { font-size: 14px; }
.wk-more { display: inline-block; margin-top: 10px; font-size: 13px; }

/* ---------- 页脚 ---------- */
.site-foot { margin-top: 60px; padding: 30px 0 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12.5px; }
.site-foot .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

@media (max-width: 780px) {
  .page-head { padding: 30px 0 24px; }
  .page-head h1 { font-size: 25px; letter-spacing: 3px; }
  .entries { grid-template-columns: 1fr; }
  .wk { grid-template-columns: 1fr; }
  .wk-side { position: static; max-height: 300px; }
  .wk-main { padding: 22px 18px; }
  .wk-main h2 { font-size: 21px; letter-spacing: 2px; }
  .wk-body p { font-size: 15.5px; }
  .cell { min-height: 54px; padding: 5px 5px 4px; }
  .cell .num { font-size: 15px; }
  .cell .lun, .cell .term { font-size: 10px; }
  .detail .solar { font-size: 21px; }
  .toolbar .month { font-size: 19px; min-width: 120px; }
}