:root{
  --navy:#1c2b4c; --blue:#305c9b; --pale:#e7eef9; --sky:#dae5f5;
  --red:#b22626; --darkred:#7d1f1f; --dark:#222; --mid:#5f5f5f;
  --light:#f6f7fa; --line:#d2d8e2; --white:#fff;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"PingFang TC","Microsoft JhengHei","Noto Sans TC",sans-serif;color:var(--dark);background:var(--light);line-height:1.7}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
header{background:var(--navy);color:#fff;padding:14px 20px;position:sticky;top:0;z-index:10}
header .brand{font-size:1.6rem;font-weight:800;letter-spacing:.02em}
header .brand span{color:#9fc0ee;font-weight:400;font-size:.85rem;margin-left:8px}
nav{background:var(--blue)}
nav ul{display:flex;flex-wrap:wrap;list-style:none;max-width:1100px;margin:0 auto}
nav ul + ul{border-top:1px solid rgba(255,255,255,.18)}
nav a{display:block;padding:9px 16px;color:#fff;font-size:.95rem}
nav a.active,nav a:hover{background:var(--navy);text-decoration:none}
nav ul.pub{background:#fce4ec}
nav ul.pub li.lbl{padding:9px 16px;font-weight:700;color:#880e4f;font-size:.95rem}
nav ul.pub a{color:#880e4f}
nav ul.pub a.active,nav ul.pub a:hover{background:#f48fb1;color:#4a0e2b}
main{max-width:1100px;margin:24px auto;padding:0 16px}
h1{color:var(--navy);font-size:1.6rem;margin:18px 0 10px;border-left:6px solid var(--blue);padding-left:12px}
h2{color:var(--navy);font-size:1.25rem;margin:26px 0 8px;border-bottom:2px solid var(--sky);padding-bottom:4px}
h3{color:var(--blue);font-size:1.05rem;margin:18px 0 6px}
p{margin:8px 0}
.small{font-size:.85rem;color:var(--mid)}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px;margin:14px 0;box-shadow:0 1px 3px rgba(28,43,76,.06)}
.grid{display:grid;gap:14px}
.grid.c3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.entry{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;text-align:center;transition:.15s}
.entry:hover{border-color:var(--blue);box-shadow:0 4px 12px rgba(48,92,155,.15)}
.entry .icon{font-size:2rem}
.entry h3{margin-top:8px}
table{width:100%;border-collapse:collapse;background:#fff;margin:10px 0;font-size:.92rem}
th{background:var(--navy);color:#fff;padding:8px 10px;text-align:left}
td{padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
tr:nth-child(even) td{background:var(--pale)}
.tag{display:inline-block;background:var(--sky);color:var(--navy);border-radius:20px;padding:1px 10px;font-size:.78rem;margin:1px 2px}
.tag.red{background:#f7dede;color:var(--darkred)}
.ref{font-size:.83rem;color:var(--mid);background:var(--pale);border-left:4px solid var(--blue);padding:8px 12px;border-radius:0 6px 6px 0;margin:12px 0}
.ref a{word-break:break-all}
.warn{background:#fdf3e2;border-left:4px solid #d09030;padding:10px 14px;border-radius:0 6px 6px 0;margin:12px 0;font-size:.92rem}
.key{background:#eef7ee;border-left:4px solid #3a8a3a;padding:10px 14px;border-radius:0 6px 6px 0;margin:12px 0;font-size:.95rem;font-weight:600}
footer{background:var(--navy);color:#c9d6ea;text-align:center;padding:20px;font-size:.82rem;margin-top:40px}
footer a{color:#9fc0ee}
details{background:#fff;border:1px solid var(--line);border-radius:8px;margin:8px 0;padding:10px 14px}
summary{cursor:pointer;font-weight:600;color:var(--navy)}
.crumb{font-size:.85rem;color:var(--mid);margin:6px 0}
@media (prefers-color-scheme: dark){
  body{background:#15181f;color:#dfe3ea}
  .card,.entry,table,details{background:#1e2330;border-color:#39405а}
  td{border-color:#333a4d}
  tr:nth-child(even) td{background:#252b3b}
  h1,h2,summary{color:#aecbf2}
  h3{color:#8db4e8}
  .ref{background:#232a3a;color:#aab4c6}
}
@media (max-width:640px){
  nav a{padding:8px 10px;font-size:.85rem}
  h1{font-size:1.3rem}
}
/* ---------- site search (in header, right of brand) ---------- */
header{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.searchbar{position:relative;flex:0 1 340px;min-width:200px}
.searchbar-inner{display:flex;align-items:center;gap:6px;background:#fff;border-radius:18px;padding:4px 12px}
.searchbar .sicon{font-size:.85rem}
#siteSearchInput{flex:1;border:0;outline:0;font-size:.85rem;background:transparent;color:var(--dark);font-family:inherit;min-width:0}
#siteSearchClear{border:0;background:transparent;cursor:pointer;color:#999;font-size:.9rem}
.sresults{position:absolute;right:0;top:calc(100% + 6px);width:min(560px,92vw);max-height:60vh;overflow-y:auto;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 30px rgba(28,43,76,.25);z-index:50}
.sr-count{padding:8px 16px;font-size:.78rem;color:var(--mid);border-bottom:1px solid var(--line)}
.sr-item{display:block;padding:10px 16px;border-bottom:1px solid var(--line);color:var(--dark)}
.sr-item:hover{background:var(--pale);text-decoration:none}
.sr-title{font-weight:700;color:var(--navy);font-size:.92rem}
.sr-h{font-weight:400;color:var(--blue);font-size:.85rem}
.sr-snip{font-size:.83rem;color:var(--mid);margin-top:2px;line-height:1.5}
.sr-item mark{background:#ffe9a8;color:inherit;padding:0 1px}
.sr-none{padding:16px;font-size:.9rem;color:var(--mid)}
@media (prefers-color-scheme: dark){
  .searchbar-inner{background:#252b3b}
  #siteSearchInput{color:#dfe3ea}
  .sresults{background:#1e2330;border-color:#39405a}
  .sr-item{color:#dfe3ea;border-color:#333a4d}
  .sr-item:hover{background:#252b3b}
  .sr-item mark{background:#7a6420;color:#fff}
  .sr-count{border-color:#333a4d}
}

@media (max-width:640px){
  .searchbar{flex:1 1 100%;}
  .sresults{right:auto;left:0;width:min(560px,94vw)}
}
@media (max-width:640px){
  header .brand{font-size:1.25rem}
}