.seo-page{max-width:1140px;margin:0 auto;padding:0 24px}.seo-breadcrumb ol{display:flex;flex-wrap:wrap;gap:6px;padding:24px 0 0;margin:0;list-style:none;font-size:.88rem;color:var(--text-muted)}.seo-breadcrumb li+li:before{content:"›";margin-right:6px}.seo-breadcrumb a{color:var(--text-muted)}.seo-breadcrumb a:hover{color:var(--accent-text)}.seo-hero{max-width:780px;padding:40px 0 48px}.seo-hero h1{margin:18px 0 16px;font-size:clamp(2rem,4.4vw,3rem);font-weight:700;letter-spacing:-.03em;line-height:1.12;text-wrap:balance}.seo-lead{color:var(--text-secondary);font-size:1.08rem;line-height:1.65}.seo-notice{margin-top:20px;padding:14px 18px;border-left:3px solid var(--accent);border-radius:var(--radius-sm);background:var(--accent-soft-bg);color:var(--text-secondary);font-size:.93rem;line-height:1.6}.seo-cta{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.seo-cta--center{justify-content:center;margin-top:0}.seo-cta-note{margin-top:12px;color:var(--text-muted);font-size:.86rem}.seo-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding-bottom:24px}.seo-stat{display:flex;flex-direction:column;gap:4px;padding:18px 20px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface)}.seo-stat strong{font-family:var(--font-display);font-size:1.5rem;font-variant-numeric:tabular-nums}.seo-stat span{color:var(--text-muted);font-size:.88rem}.seo-section{padding:72px 0 0}.seo-section .section-header{margin-bottom:36px}.seo-chapters{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin:0;padding:0;list-style:none}.seo-chapter{padding:20px 22px}.seo-chapter h3{display:flex;align-items:baseline;gap:10px;margin-bottom:12px;font-size:1.05rem;line-height:1.35}.seo-chapter-num{flex-shrink:0;min-width:26px;color:var(--accent-text);font-variant-numeric:tabular-nums}.seo-notions{display:flex;flex-direction:column;gap:6px;margin:0;padding-left:18px;color:var(--text-muted);font-size:.9rem;line-height:1.45}.seo-focus-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.seo-focus{padding:22px 24px}.seo-focus h3{margin-bottom:8px;font-size:1.05rem}.seo-focus p{color:var(--text-muted);font-size:.93rem;line-height:1.6}.seo-features{display:flex;flex-direction:column;gap:14px;max-width:780px;margin:0 auto;padding:0;list-style:none;color:var(--text-secondary);line-height:1.6}.seo-features li{padding-left:22px;position:relative}.seo-features li:before{content:"";position:absolute;left:0;top:.6em;width:8px;height:8px;border-radius:50%;background:var(--accent)}.seo-features strong{color:var(--text)}.seo-faq{max-width:780px;margin:0 auto;border-top:1px solid var(--border)}.seo-faq-item{border-bottom:1px solid var(--border)}.seo-faq-item summary{padding:18px 4px;cursor:pointer;font-weight:600}.seo-faq-item p{padding:0 4px 20px;color:var(--text-muted);font-size:.93rem;line-height:1.6}.seo-levels{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin:0;padding:0 0 80px;list-style:none}.seo-level-link{display:flex;flex-direction:column;gap:4px;height:100%;padding:18px 20px;color:var(--text);transition:border-color var(--transition-fast)}.seo-level-link:hover{border-color:var(--border-hover)}.seo-level-stage{color:var(--text-muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}.seo-level-name{font-weight:600}.seo-level-desc{color:var(--text-muted);font-size:.88rem;line-height:1.45}.seo-levels--home{position:relative;z-index:1;max-width:1140px;margin:0 auto;padding-bottom:0}.seo-footer-tagline{margin-top:12px;color:var(--text-muted);font-size:.88rem}@media(max-width:860px){.seo-focus-grid{grid-template-columns:1fr}.seo-stats{grid-template-columns:repeat(2,1fr)}}@media(max-width:480px){.seo-page{padding:0 16px}.seo-chapters{grid-template-columns:1fr}.seo-section{padding-top:56px}.seo-cta .btn{width:100%;justify-content:center}}