* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', -apple-system, sans-serif; background: #0f0f1a; color: #e0e0e0; line-height: 1.75; font-size: 16px; }

.site-header { background: linear-gradient(135deg, #0a0a14 0%, #1a1a2e 50%, #0f0f1a 100%); border-bottom: 2px solid #3b82f6; padding: 16px 0; position: sticky; top: 0; z-index: 100; }
.header-inner { max-width: 900px; margin: 0 auto; padding: 0 24px; display: flex; justify-content: space-between; align-items: center; }
.site-logo { font-size: 18px; font-weight: 800; color: #fff; letter-spacing: -0.5px; display: flex; align-items: center; gap: 10px; text-decoration: none; }
.site-logo img { height: 36px; width: auto; object-fit: contain; }
.site-logo span { color: #3b82f6; }
.header-date { font-size: 12px; color: rgba(255,255,255,0.4); }

.breadcrumb { max-width: 900px; margin: 0 auto; padding: 14px 24px; font-size: 13px; color: rgba(255,255,255,0.35); }
.breadcrumb a { color: #3b82f6; text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin: 0 6px; }

.article-container { max-width: 900px; margin: 0 auto; padding: 0 24px 60px; }

.hero { background: linear-gradient(135deg, rgba(59,130,246,0.10) 0%, rgba(59,130,246,0.02) 100%); border: 1px solid rgba(59,130,246,0.15); border-radius: 16px; padding: 48px 36px; margin-bottom: 36px; text-align: center; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 200px; height: 2px; background: linear-gradient(90deg, transparent, #3b82f6, transparent); }
.hero-badge { display: inline-block; background: #3b82f6; color: #fff; font-size: 11px; font-weight: 700; padding: 4px 14px; border-radius: 20px; margin-bottom: 16px; letter-spacing: 1px; }
h1 { font-size: 36px; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 14px; letter-spacing: -0.5px; }
.hero-sub { font-size: 15px; color: rgba(255,255,255,0.5); max-width: 620px; margin: 0 auto; }
.hero-meta { display: flex; justify-content: center; gap: 20px; margin-top: 18px; font-size: 12px; color: rgba(255,255,255,0.35); }

.cta-btn { display: inline-block; background: linear-gradient(135deg, #3b82f6, #2563eb); color: #fff; padding: 14px 40px; border-radius: 30px; font-size: 15px; font-weight: 700; text-decoration: none; margin: 20px 0; transition: all 0.3s ease; animation: pulse-btn 2s infinite; box-shadow: 0 4px 20px rgba(59,130,246,0.30); }
.cta-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(59,130,246,0.30); }
@keyframes pulse-btn { 0%, 100% { box-shadow: 0 4px 20px rgba(59,130,246,0.30); } 50% { box-shadow: 0 4px 30px rgba(59,130,246,0.60); } }

.toc { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07); border-radius: 12px; padding: 20px 24px; margin-bottom: 32px; }
.toc-title { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid rgba(255,255,255,0.07); }
.toc-link { display: block; color: #3b82f6; text-decoration: none; font-size: 14px; padding: 5px 0; transition: 0.2s; }
.toc-link:hover { color: #60a5fa; padding-left: 8px; }

h2 { font-size: 26px; font-weight: 800; color: #fff; margin: 40px 0 16px; padding-bottom: 10px; border-bottom: 1px solid rgba(255,255,255,0.07); letter-spacing: -0.3px; }
h3 { font-size: 20px; font-weight: 700; color: #e0e0e0; margin: 32px 0 12px; }
.content-block { margin-bottom: 8px; }
.content-block p { margin-bottom: 16px; color: rgba(255,255,255,0.7); }
.content-block ul, .content-block ol { margin: 16px 0; padding-left: 24px; color: rgba(255,255,255,0.7); }
.content-block li { margin-bottom: 10px; line-height: 1.6; }
.content-block strong { color: #fff; }

.info-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; margin: 24px 0; }
.info-card { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07); border-radius: 12px; padding: 24px; transition: 0.3s; }
.info-card:hover { border-color: rgba(59,130,246,0.2); background: rgba(59,130,246,0.04); }
.info-card-icon { font-size: 28px; margin-bottom: 12px; }
.info-card h3 { margin: 0 0 8px; font-size: 16px; color: #fff; }
.info-card p { font-size: 14px; color: rgba(255,255,255,0.55); margin: 0; line-height: 1.6; }

.highlight-box { background: rgba(59,130,246,0.06); border: 1px solid rgba(59,130,246,0.12); border-radius: 12px; padding: 24px; margin: 24px 0; text-align: center; }
.highlight-box p { color: rgba(255,255,255,0.7); margin-bottom: 12px; }
.highlight-box .cta-btn { margin: 10px 0 0; }

.internal-link { display: inline-block; color: #3b82f6; text-decoration: none; font-weight: 600; transition: 0.2s; }
.internal-link:hover { color: #60a5fa; text-decoration: underline; }

table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; }
th, td { padding: 12px 16px; border: 1px solid rgba(255,255,255,0.07); text-align: left; }
th { background: rgba(59,130,246,0.08); font-weight: 600; color: #fff; }
tr:nth-child(even) { background: rgba(255,255,255,0.02); }
td { color: rgba(255,255,255,0.7); }

.faq-section { margin-top: 48px; }
.faq-section h2 { margin-bottom: 20px; }
.faq-item { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07); border-radius: 10px; margin-bottom: 8px; overflow: hidden; transition: 0.3s; }
.faq-item:hover { border-color: rgba(59,130,246,0.12); }
.faq-question { padding: 16px 20px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 15px; color: #fff; transition: 0.2s; }
.faq-question:hover { background: rgba(59,130,246,0.08); }
.faq-icon { font-size: 20px; color: #3b82f6; transition: 0.3s; flex-shrink: 0; margin-left: 12px; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer p { padding: 0 20px 16px; color: rgba(255,255,255,0.6); font-size: 14px; line-height: 1.7; }
.faq-item.open .faq-answer { max-height: 300px; }
.faq-item.open .faq-icon { transform: rotate(45deg); }

.site-footer { margin-top: 48px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.07); text-align: center; }
.footer-disclaimer { background: rgba(255,170,0,0.06); border: 1px solid rgba(255,170,0,0.15); border-radius: 10px; padding: 14px 20px; margin-bottom: 20px; font-size: 12px; color: rgba(255,170,0,0.7); line-height: 1.6; }
.footer-text { font-size: 12px; color: rgba(255,255,255,0.25); }

@media (max-width: 768px) {
    h1 { font-size: 26px; }
    h2 { font-size: 22px; }
    .hero { padding: 28px 20px; }
    .article-container { padding: 0 16px 40px; }
    .hero-meta { flex-direction: column; gap: 6px; }
    .info-cards { grid-template-columns: 1fr; }
}