* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, "Segoe UI", Arial, sans-serif; color: #e2e8f0; background: radial-gradient(circle at top, #12305a 0, #071225 48%, #020617 100%); min-height: 100vh; line-height: 1.6; }
a { color: #93c5fd; }
.seo-header { align-items: center; background: #0f172a; box-shadow: 0 2px 12px rgba(0,0,0,.3); display: flex; justify-content: space-between; padding: 14px 28px; }
.seo-header img { display: block; }
.seo-main { margin: 0 auto; max-width: 820px; padding: 40px 20px 20px; }
.seo-hero { text-align: center; padding-bottom: 28px; }
.seo-eyebrow { color: #93c5fd; font-size: 13px; font-weight: 800; letter-spacing: .08em; margin: 0; text-transform: uppercase; }
.seo-hero h1 { color: #fff; font-size: 38px; line-height: 1.15; margin: 10px 0 16px; }
.seo-lead { color: #cbd5e1; font-size: 17px; margin: 0 auto 26px; max-width: 640px; }
.seo-btn { border-radius: 8px; display: inline-block; font-weight: 800; padding: 13px 24px; text-decoration: none; }
.seo-btn-accent { background: #2563eb; color: #fff; }
.seo-btn-secondary { border: 1px solid #475569; color: #e2e8f0; padding: 8px 18px; }
.seo-article { background: rgba(255,255,255,.05); border: 1px solid rgba(148,163,184,.25); border-radius: 12px; padding: 8px 28px 24px; }
.seo-article h2, .seo-more h2 { color: #fff; font-size: 22px; margin: 28px 0 8px; }
.seo-article p, .seo-article li { color: #cbd5e1; }
.seo-article li { margin-bottom: 6px; }
details { border-top: 1px solid rgba(148,163,184,.25); padding: 10px 0; }
summary { color: #fff; cursor: pointer; font-weight: 700; }
.seo-more { padding: 10px 0 20px; }
.seo-more ul { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; }
.seo-more a { background: rgba(255,255,255,.07); border: 1px solid rgba(148,163,184,.25); border-radius: 8px; display: inline-block; padding: 8px 14px; text-decoration: none; }
.seo-footer { color: #94a3b8; font-size: 13px; padding: 20px; text-align: center; }
@media (max-width: 640px) { .seo-hero h1 { font-size: 28px; } .seo-article { padding: 4px 18px 18px; } .seo-header { padding: 12px 16px; } }