/* Article pages shared styles */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --dark: #0a0f1e; --dark2: #111827; --cyan: #22d3ee; --cyan-dark: #0891b2;
  --orange: #f97316; --white: #f8fafc; --gray: #94a3b8; --radius: 12px;
}
html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans TC', sans-serif; background: #fff; color: #1e293b; line-height: 1.8; }
a { text-decoration: none; color: inherit; }

.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10,15,30,0.95); backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 5%;
  display: flex; align-items: center; justify-content: space-between; height: 64px;
}
.nav-logo { font-size: 1.15rem; font-weight: 900; color: var(--white); }
.nav-logo span { color: var(--cyan); }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { font-size: 0.85rem; font-weight: 600; color: rgba(255,255,255,0.65); transition: color 0.2s; }
.nav-links a:hover { color: var(--white); }
.nav-cta { background: var(--cyan); color: var(--dark) !important; padding: 7px 16px; border-radius: 999px; font-weight: 700 !important; }

.article-wrap { max-width: 720px; margin: 0 auto; padding: 100px 5% 60px; }

.article-header { margin-bottom: 40px; padding-bottom: 32px; border-bottom: 1px solid #e2e8f0; }
.article-tag {
  display: inline-block; font-size: 0.72rem; font-weight: 800;
  color: var(--cyan-dark); background: rgba(8,145,178,0.08);
  padding: 4px 12px; border-radius: 999px; margin-bottom: 16px;
  letter-spacing: 0.5px; text-transform: uppercase;
}
.article-header h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem); font-weight: 900;
  color: #0f172a; line-height: 1.3; margin-bottom: 20px; letter-spacing: -0.5px;
}
.article-meta { display: flex; align-items: center; gap: 16px; }
.article-author { font-size: 0.85rem; font-weight: 700; color: #475569; }
.article-date { font-size: 0.82rem; color: #94a3b8; }

.article-body { font-size: 1rem; color: #334155; }
.article-body p { margin-bottom: 20px; }
.article-body p.lead { font-size: 1.1rem; font-weight: 500; color: #1e293b; margin-bottom: 28px; }
.article-body h2 {
  font-size: 1.25rem; font-weight: 800; color: #0f172a;
  margin: 40px 0 16px; padding-top: 8px;
  border-top: 2px solid var(--cyan);
  display: inline-block; padding-right: 8px;
}
.article-body h2 { display: block; border-top: none; border-left: 3px solid var(--cyan); padding-left: 14px; padding-top: 0; }
.article-body h3 { font-size: 1.05rem; font-weight: 700; color: #1e293b; margin: 28px 0 12px; }
.article-body ul { padding-left: 0; margin-bottom: 20px; }
.article-body ul li { padding-left: 20px; position: relative; margin-bottom: 8px; }
.article-body ul li::before { content: '→'; position: absolute; left: 0; color: var(--cyan-dark); font-weight: 700; font-size: 0.85rem; }
.article-body strong { color: #0f172a; font-weight: 700; }

.prompt-box {
  background: #f8fafc; border: 1px solid #e2e8f0; border-left: 4px solid var(--cyan);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px 24px; margin: 24px 0;
}
.prompt-label { font-size: 0.72rem; font-weight: 800; color: var(--cyan-dark); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; }
.prompt-box p { font-size: 0.88rem; color: #475569; margin: 0; line-height: 1.7; }

.article-cta {
  background: linear-gradient(135deg, var(--dark), #0f172a);
  border-radius: var(--radius); padding: 28px 32px;
  margin-top: 48px; text-align: center;
}
.article-cta p { color: rgba(255,255,255,0.7); font-size: 0.9rem; margin-bottom: 12px; }
.article-cta a {
  display: inline-block; background: var(--cyan); color: var(--dark);
  padding: 12px 24px; border-radius: 8px; font-weight: 700; font-size: 0.9rem;
  transition: background 0.2s;
}
.article-cta a:hover { background: var(--cyan-dark); color: white; }

.article-footer { background: var(--dark); border-top: 1px solid rgba(255,255,255,0.06); padding: 24px 5%; }
.article-footer .footer-inner { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; }
.article-footer p { font-size: 0.78rem; color: rgba(255,255,255,0.3); }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .article-wrap { padding: 90px 5% 48px; }
}