:root {
  --ink: #222; --dim: #6b645a; --paper: #faf6f0; --panel: #fff; --line: #e3dccf; --accent: #a33; --link: #246;
  --hl: #fff3d6; --fq: #0a7a7a; --daxu: #a33; --xiaoxu: #2a6f4e; --duanzhu: #35528f;
  --serif: "Noto Serif CJK TC", "Source Han Serif TC", "Songti TC", "PMingLiU", "WFG FSung", serif;
  --top: 50px;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #e6e1d8; --dim: #a39c90; --paper: #1d1b18; --panel: #26231f; --line: #3b3630; --accent: #e08a80; --link: #9bbce0;
    --hl: #4a3c1c; --fq: #6cc; --daxu: #e08a80; --xiaoxu: #7fc3a0; --duanzhu: #9db4e6; }
  .seal, img.inl { filter: invert(1) hue-rotate(180deg); mix-blend-mode: screen; }
}
* { box-sizing: border-box; }
html { scroll-padding-top: var(--top); }
body { margin: 0; font-family: var(--serif); color: var(--ink); background: var(--paper); line-height: 1.75; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
/* 私用區字：系統字型在私用區可能有別的字形，必須全宋體優先 */
.pua { font-family: "WFG FSung", var(--serif); background: color-mix(in srgb, var(--accent) 10%, transparent); border-radius: 2px; cursor: help; }

#top { position: sticky; top: 0; z-index: 10; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; min-height: var(--top); padding: 6px 16px; background: var(--panel); border-bottom: 1px solid var(--line); }
#top h1 { font-size: 18px; margin: 0; letter-spacing: .1em; }
#top h1 a { display: flex; align-items: center; gap: 8px; color: inherit; }
#top h1 a:hover { text-decoration: none; }
#top .logo { width: 28px; height: 28px; display: block; }
#tocBtn { display: none; align-items: center; gap: 6px; padding: 3px 8px; border: 1px solid var(--line); border-radius: 6px; background: none; font: inherit; font-size: 13px; color: var(--dim); cursor: pointer; }
#searchForm { display: flex; gap: 4px; flex: 1; max-width: 320px; }
#searchForm input { flex: 1; min-width: 0; padding: 4px 8px; font: inherit; color: inherit; background: var(--paper); border: 1px solid var(--line); border-radius: 4px; }
#searchForm button { padding: 4px 12px; font: inherit; }
#pager { margin-left: auto; display: flex; gap: 12px; font-size: 14px; white-space: nowrap; }
#pager a[aria-disabled] { visibility: hidden; }

#main { display: flex; align-items: flex-start; }
#side { position: sticky; top: var(--top); width: 220px; flex: none; height: calc(100vh - var(--top)); overflow: auto; padding: 8px; font-size: 14px; background: var(--panel); border-right: 1px solid var(--line); }
#toc summary { cursor: pointer; padding: 3px 6px; border-radius: 4px; }
#toc summary:hover { background: var(--hl); }
#toc summary .n { float: right; color: var(--dim); font-size: 12px; }
#toc .toc-xu { display: block; padding: 3px 6px 3px 22px; }
.bus { display: flex; flex-wrap: wrap; gap: 3px; }
#toc .bus { margin: 4px 0 8px 14px; }
.bus a { min-width: 1.9em; padding: 0 4px; text-align: center; border: 1px solid var(--line); border-radius: 3px; background: var(--panel); }
.bus a.cur { background: var(--hl); border-color: var(--accent); font-weight: bold; }
.bus sub { color: var(--dim); font-size: 10px; margin-left: 1px; }
#view { flex: 1; min-width: 0; padding: 16px 20px 40px; }
.loading { color: var(--dim); }

h2.pg { margin: 0 0 12px; font-size: 22px; }
h2.pg small, .ed h3 small { margin-left: .8em; font-size: 13px; font-weight: normal; color: var(--dim); }
.home p { max-width: 46em; }
.juans { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 12px; margin-top: 16px; }
.juans section { padding: 8px 10px; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; }
.juans h3 { margin: 0 0 6px; font-size: 15px; color: var(--accent); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(2.6em, 1fr)); gap: 4px; font-size: 22px; }
.grid a { text-align: center; padding: 4px 0; background: var(--panel); border: 1px solid var(--line); border-radius: 4px; color: inherit; }
.grid a:hover { background: var(--hl); text-decoration: none; }
.qrow { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 10px; }
.qc { font-size: 26px; width: 1.6em; text-align: center; }
.card { display: flex; align-items: baseline; gap: 10px; padding: 4px 12px; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; color: inherit; font-size: 13px; }
.card b { font-size: 24px; font-weight: normal; }
.card span, .none { color: var(--dim); }

/* 字頭 */
.hw { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; padding-bottom: 8px; margin-bottom: 12px; border-bottom: 2px solid var(--accent); }
.hw h2 { margin: 0; font-size: 44px; line-height: 1.1; font-weight: normal; }
.hw .id { color: var(--accent); font-family: ui-monospace, monospace; font-size: 14px; }
.flag { padding: 0 6px; font-size: 12px; color: #fff; background: var(--accent); border-radius: 3px; cursor: help; }
.hw .meta { flex-basis: 100%; font-size: 15px; color: var(--dim); }
.dot { margin: 0 .6em; }

/* 三本對照：寬屏並排，窄屏依次排下 */
.eds { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr)); align-items: start; }
.ed { min-width: 0; padding: 0 12px 10px; background: var(--panel); border: 1px solid var(--line); border-top: 3px solid var(--c); border-radius: 4px; }
.ed.daxu { --c: var(--daxu); } .ed.xiaoxu { --c: var(--xiaoxu); } .ed.duanzhu { --c: var(--duanzhu); }
.ed h3 { margin: 6px 0; font-size: 15px; color: var(--c); }
.item + .item { margin-top: 10px; padding-top: 8px; border-top: 1px dashed var(--line); }
.ihead { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px; font-size: 14px; }
.liding { font-size: 24px; line-height: 1.2; }
.liding a { color: inherit; }
.fq { color: var(--fq); }
.guyin, .var, .mark { color: var(--dim); }
.others { margin-left: auto; display: flex; gap: 2px; opacity: .85; }
.loc { font-size: 12px; color: var(--dim); }
.wk { opacity: .8; }
.unit { margin-left: .6em; opacity: .7; font-size: 12px; }
.seal { display: inline-block; flex: none; background-repeat: no-repeat; vertical-align: middle; }
.seal.none { width: 64px; }
.def { display: flex; gap: 10px; align-items: flex-start; margin: 6px 0 2px; }
.def p { margin: 0; font-size: 18px; align-self: center; }
.note { display: flex; gap: 8px; align-items: baseline; margin: 4px 0 4px 74px; font-size: 15px; color: color-mix(in srgb, var(--ink) 82%, var(--paper)); }
.note p { margin: 0; min-width: 0; }
.note .lb { flex: none; padding: 0 4px; font-size: 11px; line-height: 1.6; color: #fff; background: #667; border-radius: 2px; }
.note.s13 .lb { background: #b55; }
.ed > .note { margin-left: 0; }
.sep { margin: 0 .3em; color: var(--duanzhu); }
small { color: var(--dim); }
img.inl { height: 1.5em; vertical-align: middle; }
.ednote { position: relative; color: var(--accent); font-size: 12px; vertical-align: super; cursor: help; }
.ednote:hover::after, .ednote:focus::after { content: attr(data-note); position: absolute; left: 0; top: 1.6em; z-index: 5; width: max-content; max-width: 22em; padding: 4px 8px; font-size: 13px; line-height: 1.5; color: var(--ink); background: var(--hl); border: 1px solid var(--line); border-radius: 4px; }
.refs { margin-top: 14px; font-size: 13px; color: var(--dim); }
.refs summary { cursor: pointer; }
.refs ul { margin: 6px 0; padding-left: 1.2em; columns: 2 280px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 10px 0; }

.xu { max-width: 42em; font-size: 18px; }
.xu p { margin: 0 0 .6em; }
.xu .para { text-indent: 2em; }
.xu .right { text-align: right; color: var(--dim); }

footer { padding: 14px 20px; font-size: 12px; color: var(--dim); border-top: 1px solid var(--line); }

@media (max-width: 800px) {
  #tocBtn { display: flex; }
  #side { display: none; position: fixed; inset: var(--top) 0 0 0; width: auto; height: auto; z-index: 9; border-right: 0; }
  body.toc-open #side { display: block; }
  #pager { margin-left: 0; width: 100%; justify-content: space-between; }
  #view { padding: 12px 12px 32px; }
  .note { margin-left: 0; }
  .def p { font-size: 17px; }
}