:root{
  --bg:#f3f7ff;
  --text:#15213a;
  --muted:#5f6f8f;
  --line:#d8e2f2;
  --card:#ffffff;
  --primary:#2f6df6;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Arial, "Microsoft JhengHei", sans-serif;
  color:var(--text);
  background:#fff;
  line-height:1.65;
}
a{color:var(--primary); text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1080px; margin:0 auto; padding:0 24px}
.site-header{
  border-bottom:1px solid var(--line);
  background:#fff;
  position:sticky; top:0; z-index:10;
}
.nav{display:flex; justify-content:space-between; align-items:center; min-height:68px}
.brand{font-size:22px; font-weight:700; color:var(--text)}
.nav-links a{margin-left:24px; font-size:15px}
.hero{
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.hero-inner{padding:76px 0}
.kicker{
  text-transform:uppercase;
  letter-spacing:1.5px;
  color:var(--muted);
  font-size:14px;
  margin-bottom:10px;
}
h1{
  font-size:62px;
  line-height:1.05;
  margin:0 0 20px;
  max-width:760px;
}
.hero p{
  font-size:18px;
  max-width:760px;
  color:#41516f;
  margin:0 0 28px;
}
.btn-row{display:flex; gap:14px; flex-wrap:wrap}
.btn{
  display:inline-block;
  border:1px solid var(--primary);
  border-radius:14px;
  padding:14px 24px;
  font-weight:700;
}
.btn-primary{background:var(--primary); color:#fff}
.btn-secondary{background:#fff}
.section{padding:56px 0}
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(240px, 1fr));
  gap:22px;
}
.card{
  border:1px solid var(--line);
  background:var(--card);
  border-radius:22px;
  padding:28px;
}
.card h3{margin:0 0 14px; font-size:24px}
.card p{margin:0; color:#41516f}
.section-title{font-size:34px; margin:0 0 18px}
.section-desc{color:#41516f; margin:0 0 28px}
.list{display:grid; gap:18px}
.guide{
  border:1px solid var(--line);
  border-radius:20px;
  padding:24px;
  background:#fff;
}
.guide h3{margin:0 0 10px; font-size:26px}
.guide .meta{color:var(--muted); font-size:14px; margin-bottom:12px}
.guide p{margin:0 0 14px; color:#41516f}
.badge{display:inline-block; border:1px solid var(--line); border-radius:999px; padding:6px 10px; font-size:12px; color:var(--muted); margin:0 8px 8px 0}
.content-wrap{padding:44px 0 72px}
.breadcrumbs{font-size:14px; color:var(--muted); margin-bottom:14px}
.page h1{font-size:46px; max-width:900px; margin-bottom:16px}
.page .lead{font-size:19px; color:#41516f; max-width:900px}
.content{
  display:grid;
  grid-template-columns:minmax(0, 1fr) 300px;
  gap:28px;
  margin-top:34px;
}
.article, .sidebar{
  border:1px solid var(--line);
  border-radius:22px;
  background:#fff;
}
.article{padding:30px}
.sidebar{padding:24px; height:max-content; position:sticky; top:92px}
.article h2{font-size:30px; margin:34px 0 14px}
.article h3{font-size:23px; margin:28px 0 10px}
.article p, .article li{color:#354565}
.table-wrap{overflow:auto; margin:18px 0}
table{
  border-collapse:collapse;
  width:100%;
  min-width:620px;
  font-size:15px;
}
th,td{
  border:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
  vertical-align:top;
}
th{background:var(--bg)}
.note{
  background:#f8fbff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:18px;
}
.cta-box{
  margin-top:24px;
  padding:20px;
  border-radius:20px;
  background:var(--bg);
  border:1px solid var(--line);
}
.footer{
  border-top:1px solid var(--line);
  background:#fff;
}
.footer-inner{
  padding:28px 0 48px;
  color:var(--muted);
  font-size:14px;
}
ul{padding-left:20px}
@media (max-width: 860px){
  h1{font-size:44px}
  .page h1{font-size:34px}
  .content{grid-template-columns:1fr}
  .sidebar{position:static}
  .nav{flex-direction:column; align-items:flex-start; padding:12px 0}
  .nav-links{margin-top:8px}
  .nav-links a{margin-left:0; margin-right:16px}
}