* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #f7f9fc;
  color: #182235;
  font-family: "Noto Sans TC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.8;
}

a {
  color: #0f766e;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header,
.seo-footer {
  background: #ffffff;
  border-bottom: 1px solid #dde6f2;
}

.seo-footer {
  border-top: 1px solid #dde6f2;
  border-bottom: 0;
}

.nav,
.footer-inner,
main {
  width: min(100%, 1080px);
  margin: 0 auto;
  padding: 0 20px;
}

.nav {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  font-weight: 900;
  color: #111827;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.92rem;
}

main {
  padding-top: 32px;
  padding-bottom: 48px;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px;
  align-items: start;
}

.article,
.panel,
.post-card {
  background: #ffffff;
  border: 1px solid #dde6f2;
  border-radius: 8px;
}

.article {
  padding: 32px;
}

.eyebrow {
  margin: 0 0 8px;
  color: #0f766e;
  font-size: 0.86rem;
  font-weight: 800;
}

h1 {
  margin: 0 0 12px;
  color: #111827;
  font-size: clamp(1.9rem, 2.8vw, 3rem);
  line-height: 1.22;
  letter-spacing: 0;
}

.lead {
  margin: 0 0 18px;
  color: #455569;
  font-size: 1.06rem;
}

.meta {
  color: #667085;
  font-size: 0.9rem;
}

h2 {
  margin: 34px 0 12px;
  color: #0f766e;
  font-size: 1.45rem;
  line-height: 1.35;
}

h3 {
  margin: 24px 0 8px;
  color: #243044;
  font-size: 1.08rem;
}

p,
li {
  color: #344054;
}

ul,
ol {
  padding-left: 1.35rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 22px;
  overflow: hidden;
  border: 1px solid #d9e2ef;
  border-radius: 8px;
}

th,
td {
  padding: 12px;
  border-bottom: 1px solid #e6edf5;
  text-align: left;
  vertical-align: top;
}

th {
  background: #edf7f5;
  color: #0f766e;
}

tr:last-child td {
  border-bottom: 0;
}

.cta {
  margin: 28px 0;
  padding: 18px;
  background: #eef7ff;
  border: 1px solid #bfd7ff;
  border-radius: 8px;
}

.cta strong {
  display: block;
  margin-bottom: 6px;
  color: #174ea6;
}

.panel {
  padding: 20px;
  position: sticky;
  top: 20px;
}

.panel h2 {
  margin-top: 0;
  font-size: 1.05rem;
}

.panel ol,
.panel ul {
  margin: 0;
  padding-left: 1.1rem;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.post-card {
  display: block;
  padding: 18px;
  color: inherit;
}

.post-card h2 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.post-card p {
  margin: 0;
  font-size: 0.92rem;
}

.footer-inner {
  padding-top: 20px;
  padding-bottom: 20px;
  color: #667085;
  font-size: 0.9rem;
}

@media (max-width: 860px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .panel {
    position: static;
  }

  .article {
    padding: 24px 18px;
  }
}