* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
--bg: #f5f5f5;
--card: #fff;
--text: #333;
--muted: #666;
--accent: #667eea;
--accent-light: #f0f4ff;
--gold: #ffd43b;
--radius: 20px;
--hero: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
}
body {
font-family: 'Noto Sans JP', system-ui, sans-serif;
background: var(--bg);
min-height: 100vh;
color: var(--text);
line-height: 1.85;
}
.main-card {
max-width: 820px;
margin: 2rem auto;
background: var(--card);
border-radius: var(--radius);
box-shadow: 0 20px 60px rgba(0, 0, 0, 0.10);
overflow: hidden;
}
.hero {
background: var(--hero);
padding: 2.6rem 2rem;
text-align: center;
}
.hero-badge {
display: inline-block;
background: rgba(255, 255, 255, 0.24);
color: #fff;
padding: 0.4rem 1rem;
border-radius: 999px;
font-size: 0.85rem;
font-weight: 600;
margin-bottom: 1rem;
}
.hero h1 {
color: #fff;
font-size: 1.6rem;
font-weight: 800;
line-height: 1.45;
text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
.hero-meta {
margin-top: 1rem;
color: rgba(255, 255, 255, 0.92);
font-size: 0.9rem;
}
.content { padding: 2rem; }
.intro {
font-size: 1.1rem;
text-align: center;
padding: 1.4rem;
background: var(--accent-light);
border-radius: var(--radius);
margin-bottom: 2rem;
}
.section { margin-bottom: 2.3rem; }
.section h2 {
font-size: 1.2rem;
color: var(--accent);
margin-bottom: 1rem;
padding-bottom: 0.5rem;
border-bottom: 3px solid var(--accent-light);
}
.section p { margin-bottom: 1rem; }
.section ul, .section ol {
padding-left: 1.4rem;
margin-bottom: 1rem;
}
.section li { margin-bottom: 0.4rem; }
code {
background: #f3f4f6;
padding: 0.1rem 0.4rem;
border-radius: 6px;
font-size: 0.92em;
}
.cta-box {
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
border-radius: var(--radius);
padding: 2rem;
text-align: center;
color: #fff;
margin: 2rem 0;
}
.cta-box h3 {
font-size: 1.2rem;
margin-bottom: 0.6rem;
}
.cta-box p {
opacity: 0.92;
margin-bottom: 1.4rem;
}
.cta-btn {
display: inline-block;
background: var(--gold);
color: #333;
padding: 1rem 2rem;
border-radius: 999px;
text-decoration: none;
font-weight: 800;
}
.related-links-section ul { padding-left: 1.4rem; }
.related-links-section a,
.article-footer a { color: var(--accent); text-decoration: none; }
.article-footer {
padding: 1.5rem 2rem;
background: #f8f9fa;
border-top: 1px solid #eee;
font-size: 0.88rem;
color: var(--muted);
}
.small { font-size: 0.85rem; color: var(--muted); }
@media (max-width: 600px) {
.main-card { margin: 1rem; border-radius: 16px; }
.hero { padding: 2rem 1.4rem; }
.hero h1 { font-size: 1.3rem; }
.content { padding: 1.5rem; }
}