:root{
  color-scheme:light;
  --bg:#f4efe5;
  --panel:#fffdf8;
  --panel2:#f8f4ec;
  --text:#12233d;
  --muted:#647083;
  --line:#d8d1c5;
  --accent:#d88a35;
  --accent2:#356a5d;
  --amber:#d88a35;
  --amber-soft:#f5e2c7;
  --code:#eee7db;
  --active:#f5e2c7;
  --shadow:0 18px 60px rgba(18,35,61,.09);
  --green-soft:#e1eee9;
  --blue-soft:#e7eef4;
  --purple-soft:#eee7f4;
  --red-soft:#f6e6e3;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang TC","Noto Sans TC","Microsoft JhengHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  line-height:1.72;
}
body:before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  opacity:.2;
  background-image:radial-gradient(rgba(18,35,61,.13) .55px,transparent .55px);
  background-size:8px 8px;
}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}

.topbar{
  position:sticky;top:0;z-index:30;height:62px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 22px;
  border-bottom:1px solid rgba(18,35,61,.1);
  background:rgba(244,239,229,.92);
  backdrop-filter:blur(16px);
}
.brand{font-weight:850;color:var(--text);letter-spacing:.03em}
.brand span{color:var(--accent2)}
.toplinks{display:flex;gap:18px;font-size:.9rem}
.toplinks a{color:var(--muted)}
.toplinks a:hover{color:var(--text)}

.shell{display:grid;grid-template-columns:300px minmax(0,1fr);max-width:1700px;margin:auto}
aside{
  position:sticky;top:62px;height:calc(100vh - 62px);overflow:auto;
  border-right:1px solid var(--line);
  background:rgba(248,244,236,.88);
  padding:20px 16px;
}
.search{
  width:100%;
  border:1px solid var(--line);
  background:rgba(255,253,248,.78);
  color:var(--text);
  border-radius:10px;
  padding:11px 12px;
  margin-bottom:16px;
}
.search:focus{outline:2px solid var(--accent);outline-offset:1px}
.nav h4{
  margin:18px 8px 8px;
  color:var(--accent);
  font-size:.69rem;
  letter-spacing:.13em;
  text-transform:uppercase
}
.nav a{
  display:block;
  color:#415068;
  padding:7px 10px;
  border-radius:8px;
  font-size:.92rem
}
.nav a:hover,.nav a.active{
  background:var(--active);
  color:var(--text);
  text-decoration:none
}
.legendbox{
  border:1px solid var(--line);
  background:var(--panel);
  border-radius:14px;
  padding:14px;
  margin-top:20px;
  box-shadow:0 8px 28px rgba(18,35,61,.04)
}
.legendbox b{color:#9a5e21}

main{min-width:0;padding:38px clamp(24px,4vw,72px) 90px}
.hero{
  border:1px solid var(--line);
  background:
    radial-gradient(circle at 90% 0,rgba(216,138,53,.10),transparent 28rem),
    var(--panel);
  border-radius:18px;
  padding:clamp(28px,4vw,54px);
  box-shadow:var(--shadow);
  margin-bottom:26px;
}
.eyebrow{color:var(--accent2);font-weight:800;letter-spacing:.08em}
h1{
  font-family:Georgia,"Noto Serif TC",serif;
  font-size:clamp(2.35rem,4.8vw,4.8rem);
  line-height:1;
  letter-spacing:-.045em;
  margin:.22em 0 .3em;
  color:var(--text)
}
.hero p{max-width:1000px;color:#415068;font-size:1.08rem}
.badges{display:flex;flex-wrap:wrap;gap:8px}
.badge{
  display:inline-flex;align-items:center;
  border:1px solid var(--line);
  border-radius:999px;
  padding:5px 10px;
  background:rgba(255,253,248,.60);
  color:var(--muted);
  font-size:.78rem
}

section{
  scroll-margin-top:82px;
  border:1px solid var(--line);
  background:var(--panel);
  border-radius:18px;
  margin:0 0 24px;
  padding:clamp(22px,3vw,34px);
  box-shadow:0 8px 30px rgba(18,35,61,.045)
}
h2{
  margin:0 0 14px;
  padding-top:.15em;
  font-family:Georgia,"Noto Serif TC",serif;
  font-size:clamp(1.75rem,3vw,2.65rem);
  line-height:1.15;
  color:var(--text)
}
h3{
  margin:1.8em 0 .6em;
  font-family:Georgia,"Noto Serif TC",serif;
  color:var(--text)
}
h4{color:var(--text)}
p,li{color:#415068}
strong{color:var(--text)}

.grid3,.grid4,.grid2{display:grid;gap:16px}
.grid3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid2{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{
  border:1px solid var(--line);
  background:var(--panel);
  border-radius:18px;
  padding:22px;
  box-shadow:0 8px 28px rgba(18,35,61,.04)
}
.card.cyan{background:var(--blue-soft)}
.card.green{background:var(--green-soft)}
.card.yellow{background:var(--amber-soft)}
.card.purple{background:var(--purple-soft)}
.card h4{margin:0 0 7px}
.card small{color:var(--muted)}

.note,.tip,.warn{
  border-left:3px solid var(--accent);
  background:var(--active);
  color:#60492e;
  padding:16px 18px;
  border-radius:0 12px 12px 0;
  margin:16px 0
}
.tip{border-left-color:var(--accent2);background:var(--green-soft);color:#2d5c50}
.warn{border-left-color:var(--accent);background:var(--amber-soft);color:#6f4b25}

table{
  width:100%;
  border-collapse:collapse;
  display:block;
  overflow:auto;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:14px;
  margin:16px 0
}
th,td{
  border-bottom:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
  vertical-align:top
}
th{background:#e8e1d6;color:var(--text)}
td{background:var(--panel);color:#415068}

pre{
  position:relative;
  overflow:auto;
  background:var(--code);
  border:1px solid var(--line);
  border-radius:14px;
  padding:18px
}
pre code{
  font-family:ui-monospace,SFMono-Regular,Consolas,monospace;
  color:#29493f;
  white-space:pre;
  background:transparent;
  border:0;
  padding:0
}
code{
  font-family:ui-monospace,SFMono-Regular,Consolas,monospace;
  background:var(--code);
  color:#29493f;
  border-radius:6px;
  padding:.16em .4em
}
.copy{
  position:absolute;right:9px;top:9px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,253,248,.75);
  color:var(--muted);
  padding:5px 10px;
  cursor:pointer
}
.copy:hover{background:var(--active);color:var(--text)}

.diagram{
  background:var(--panel2);
  border:1px solid var(--line);
  border-radius:18px;
  padding:14px;
  margin:20px 0;
  overflow:auto
}
.diagram img{
  display:block;
  width:100%;
  min-width:760px;
  height:auto;
  border-radius:12px
}

.flow{display:flex;gap:10px;align-items:stretch;flex-wrap:wrap;margin:14px 0}
.step{
  flex:1 1 190px;
  border:1px solid var(--line);
  background:var(--panel2);
  border-radius:14px;
  padding:15px
}
.step b{color:var(--accent2)}
.kpi{font-size:1.18rem;font-weight:800;color:#9a5e21}
footer{padding:40px 28px 70px;color:var(--muted);max-width:1700px;margin:auto}
.ref a{word-break:break-all}
@media(max-width:1000px){
  .shell{grid-template-columns:1fr}
  aside{position:relative;top:auto;height:auto;border-right:0;border-bottom:1px solid var(--line)}
  .grid4,.grid3,.grid2{grid-template-columns:1fr}
  .toplinks{display:none}
  main{padding:24px 16px 70px}
  .hero{padding:28px}
}

.lang-switch{display:flex;align-items:center;gap:5px;margin-right:12px;white-space:nowrap}
.lang-switch a{display:inline-flex;align-items:center;justify-content:center;min-width:40px;
 border:1px solid var(--line);border-radius:999px;padding:5px 9px;background:rgba(255,253,248,.62);
 color:var(--muted);font-size:.75rem;font-weight:750;text-decoration:none}
.lang-switch a:hover{background:var(--active);color:var(--text)}
.lang-switch a.current{background:var(--text);color:#fffdf8;border-color:var(--text)}
.brand-wrap{display:flex;align-items:center;min-width:0}
@media(max-width:760px){.lang-switch{margin-right:7px}.lang-switch a{min-width:34px;padding:4px 7px}}