/* A 天文仪 · 共用视觉系统。页面使用响应式尺寸。 */
:root{
  --bg:#05070b;--ivory:#ece5d6;--i90:rgba(236,229,214,.9);--i70:rgba(236,229,214,.7);
  --i55:rgba(236,229,214,.55);--i40:rgba(236,229,214,.4);--i22:rgba(236,229,214,.22);--i12:rgba(236,229,214,.12);
  --gold:#d4b57a;--gold-hi:#ecd7a8;--gold-dim:rgba(212,181,122,.45);--cinnabar:#c4452c;
  --song:"Songti SC","STSong",serif;--kai:var(--song);--mono:ui-monospace,"SF Mono",Menlo,monospace;
  --latin:"Didot","Bodoni 72",Georgia,serif;
  --木:#5fae7f;--火:#d6654b;--土:#cfa960;--金:#e4ddcd;--水:#5e95cf;
}
*{box-sizing:border-box;margin:0;padding:0}
html{min-height:100%;background:var(--bg);overflow-x:hidden}
body{min-height:100vh;color:var(--ivory);font-family:var(--song);-webkit-font-smoothing:antialiased;
  background:radial-gradient(900px 760px at var(--gx,70%) var(--gy,52%),#0d1626 0%,#080c15 46%,#04060a 100%);
  background-attachment:fixed}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath fill='%23fff' filter='url(%23n)' d='M0 0h180v180H0z'/%3E%3C/svg%3E")}
a{color:inherit}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}button:disabled{cursor:default}button:focus-visible,a:focus-visible,summary:focus-visible{outline:1px solid var(--gold);outline-offset:5px}
button{background:transparent;color:inherit}svg text{font-family:var(--song)}
.top{position:fixed;left:0;right:0;top:0;height:76px;padding:0 56px;z-index:45;display:flex;align-items:center;justify-content:space-between;
  background:linear-gradient(180deg,rgba(5,7,11,.9),rgba(5,7,11,0))}
.brand{display:flex;align-items:center;gap:13px;font-size:15px;letter-spacing:.34em;color:var(--i90);text-decoration:none;white-space:nowrap}
.seal{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:2px;background:var(--cinnabar);
  color:#f7e8d3;font-size:12px;letter-spacing:0;text-indent:0;font-family:var(--song);flex:none;border:0;line-height:1}
.seal.big{width:46px;height:46px;font-size:27px}.seal-btn{cursor:pointer;pointer-events:auto}
.nav{display:flex;gap:38px;font-size:13.5px;letter-spacing:.26em;color:var(--i55);min-width:0;max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:none;padding-bottom:5px}
.nav::-webkit-scrollbar{display:none}.nav a{flex:none}
.nav a{position:relative;text-decoration:none;white-space:nowrap;padding:6px 0}
.nav a:hover{color:var(--ivory)}.nav .on{color:var(--ivory)}
.nav .on::after{content:"";position:absolute;left:0;right:.26em;bottom:-4px;height:1px;background:var(--gold)}
.eyebrow{font-family:var(--mono);font-size:10.5px;letter-spacing:.3em;color:var(--i40);text-transform:uppercase}
.label{font-size:12px;letter-spacing:.32em;color:var(--i40)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}.rule{height:1px;background:var(--i12)}
.btn{display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 34px;border:1px solid rgba(212,181,122,.72);
  color:var(--gold-hi);font-size:15px;letter-spacing:.5em;text-indent:.5em;text-decoration:none;background:transparent;transition:background .25s,border-color .25s}
.btn:hover{background:rgba(212,181,122,.06);border-color:var(--gold-hi)}
.btn.ghost{border-color:var(--i22);color:var(--i70)}.btn.sm{height:38px;padding:0 22px;font-size:13px;letter-spacing:.42em;text-indent:.42em}
.key,kbd{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 5px;border:1px solid var(--i22);
  border-radius:3px;font-family:var(--mono);font-size:10px;color:var(--i55);letter-spacing:0;text-indent:0;font-weight:400}
.btn .key{margin-left:12px}
.icon{width:34px;height:34px;border:1px solid var(--i22);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:var(--i55)}
.icon:hover{border-color:var(--i55);color:var(--ivory)}.icon svg{width:15px;height:15px;pointer-events:none}
html.app .top{padding-left:82px}
@media(max-width:760px),(aspect-ratio < 1/1){
  .nav [data-nav="tour"],#readTour{display:none}
}
@media(max-width:1000px){.top{padding:0 28px}.nav{gap:24px}}
@media(max-width:760px){
  .top,html.app .top{height:104px;padding:16px 20px 12px;flex-wrap:wrap;align-content:space-between;gap:13px;background:linear-gradient(180deg,#05070b 68%,rgba(5,7,11,.85))}
  .brand{font-size:14px}.nav{width:100%;justify-content:space-between;gap:12px;font-size:12px;letter-spacing:.16em}
  .nav .on::after{right:.16em;bottom:0}.btn{padding:0 22px;font-size:13px;height:42px}
}

/* 注释：正文、白话和本作整理的导读分别排版。 */
[hidden]{display:none!important}
.term{border-bottom:1px dashed rgba(212,181,122,.55);cursor:help;letter-spacing:inherit;pointer-events:auto}
.term:focus-visible{outline:1px solid var(--gold);outline-offset:3px}
.chartTitle{display:flex;align-items:baseline;gap:14px 22px;flex-wrap:wrap}
.how{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border:1px solid var(--i22);font-size:12px;letter-spacing:.2em;color:var(--i70);white-space:nowrap;line-height:1.5}
.how[aria-expanded=true]{border-color:var(--gold-dim);color:var(--gold-hi);background:rgba(212,181,122,.06)}
.how>span{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px;border:1px solid currentColor;border-radius:50%;font:10px var(--mono);letter-spacing:0}
.notes-guide{position:relative;margin-top:28px;padding-top:24px;border:1px solid rgba(212,181,122,.3);background:linear-gradient(90deg,rgba(212,181,122,.06),rgba(212,181,122,.02))}
.notes-guide ol{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));list-style:none}
.notes-guide li{position:relative;display:flex;gap:12px;padding:12px 16px;font-size:12.5px;line-height:1.8;letter-spacing:.03em;color:var(--i70);border-left:1px solid rgba(212,181,122,.16)}
.notes-guide li:first-child{border-left:0}.notes-guide li>span{min-width:0}
.notes-guide li i{display:inline-flex;align-items:center;justify-content:center;width:19px;height:19px;margin-top:2px;border-radius:50%;border:1px solid var(--gold);font:10.5px var(--mono);color:var(--gold-hi);flex:none}
.guideClose{position:absolute;right:12px;top:7px;border:0;font-size:11px;letter-spacing:.16em;color:var(--i55)}
.guideCredit{position:absolute;left:16px;top:7px;font-size:10px;letter-spacing:.16em;color:var(--i40)}
.termPopup{position:fixed;z-index:100;width:280px;max-width:calc(100vw - 24px);max-height:calc(100vh - 24px);overflow:auto;padding:14px 16px 13px;background:rgba(9,13,22,.98);border:1px solid rgba(212,181,122,.4);box-shadow:0 12px 40px rgba(0,0,0,.55)}
.termPopup .t{font-size:14px;letter-spacing:.24em;color:var(--gold-hi)}
.termPopup .d{margin-top:8px;font-size:12.5px;line-height:1.85;letter-spacing:.03em;color:var(--i70)}
.termPopup .s{margin-top:8px;font-size:11px;line-height:1.85;letter-spacing:.06em;color:var(--i55)}
.termPopup .credit{margin-top:8px;font-size:10px;letter-spacing:.16em;color:var(--i40)}
.bh{margin-top:6px;font-size:12.5px;line-height:1.85;letter-spacing:.03em;color:var(--i55)}
.bh b{font-weight:400;font-size:10.5px;letter-spacing:.2em;color:var(--i40);margin-right:8px}
.baihua-off .bh{display:none}.baihuaCredit{margin-top:7px;font-size:10px;letter-spacing:.16em;color:var(--i40)}
.sideHead{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}
.tog{display:flex;align-items:center;gap:8px;border:0;font-size:11.5px;letter-spacing:.2em;color:var(--i55)}
.tog i{position:relative;display:inline-block;width:26px;height:14px;border-radius:7px;background:rgba(212,181,122,.35);border:1px solid rgba(212,181,122,.6)}
.tog i::after{content:"";position:absolute;right:2px;top:2px;width:8px;height:8px;border-radius:50%;background:var(--gold-hi)}
.tog[aria-checked=false] i{background:var(--i12);border-color:var(--i22)}.tog[aria-checked=false] i::after{right:14px;background:var(--i55)}
@media(min-width:761px) and (max-width:1200px){.pan-head,.ziwei-head{flex-wrap:wrap}.notes-guide ol{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){
  .notes-guide{margin-top:24px}.notes-guide ol{grid-template-columns:1fr}.notes-guide li{border-left:0;border-top:1px solid rgba(212,181,122,.16);font-size:12px}
  .notes-guide li:first-child{border-top:0}.chartTitle{gap:14px}.how{font-size:11px;letter-spacing:.12em;padding:6px 9px}
}