.bl-page{--bl-ink:#0d1947;--bl-purple:#613bf0;--bl-muted:#4d5771;background:#f7f8ff;color:var(--bl-ink);font-family:Poppins,Arial,sans-serif;padding:24px 0 48px}
.bl-page *{box-sizing:border-box}.bl-wrap{max-width:1200px;margin:auto;padding:0 28px}.bl-page a{color:inherit;text-decoration:none}.bl-page a:focus-visible,.bl-page summary:focus-visible{outline:3px solid #bc8b00;outline-offset:5px}.bl-page p{color:var(--bl-muted);line-height:1.75}.bl-page img{display:block;max-width:100%;object-fit:contain}.bl-page section[id]{scroll-margin-top:100px}.bl-breadcrumb{display:flex;flex-wrap:wrap;gap:12px;font-size:.8rem;align-items:center;margin-bottom:24px}.bl-breadcrumb a{display:inline-flex;align-items:center;min-height:44px;color:var(--bl-purple)}
.bl-hero{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:40px;padding:36px 0 56px}.bl-kicker{display:block;color:#5832b1;font-size:.72rem;font-weight:800;letter-spacing:.1em}.bl-hero h1{font-size:clamp(2.5rem,4.6vw,4.4rem);font-weight:800;letter-spacing:-.045em;line-height:1.08;margin:18px 0 24px}.bl-hero h1 em{color:var(--bl-purple);font-style:normal}.bl-hero-copy>p{font-size:1.07rem;max-width:510px}.bl-launch{border-left:4px solid #ffbf00;padding:6px 0 6px 16px;margin:26px 0}.bl-launch>span{display:block;font-size:.7rem;letter-spacing:.08em;font-weight:800;color:#755800;margin-bottom:5px}.bl-launch strong{font-size:1.05rem;line-height:1.6}.bl-actions{display:flex;flex-wrap:wrap;gap:12px}.bl-button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:48px;padding:12px 20px;background:var(--bl-purple);border:1px solid var(--bl-purple);border-radius:9px;color:#fff!important;font-size:.85rem;font-weight:700;text-align:center;line-height:1.5}.bl-button:hover{background:#4827be;color:#fff}.bl-button-outline{background:transparent;color:var(--bl-purple)!important}.bl-button-outline:hover{background:#efeaff;color:#4827be!important}
.bl-showcase{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;background:radial-gradient(ellipse,#e0d7ff,#f7f8ff 72%);padding:36px 10px;min-width:0}.bl-showcase figure{margin:0;min-width:0}.bl-showcase figure:first-child{transform:translateY(-16px)}.bl-showcase figure:last-child{transform:translateY(16px)}.bl-showcase img{width:100%;height:340px;filter:drop-shadow(0 16px 12px #15153d25)}.bl-showcase figcaption{margin-top:20px;text-align:center;font-size:.58rem;font-weight:700;letter-spacing:.04em;line-height:1.8}
.bl-section-heading{max-width:690px;margin:0 auto 32px;text-align:center}.bl-section-heading h2,.bl-buy h2,.bl-faq h2{font-size:clamp(1.8rem,3vw,2.6rem);font-weight:800;line-height:1.2;margin:12px 0 18px}.bl-catalog{padding:32px 0}.bl-book{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);border:1px solid #e1dcf1;border-radius:22px;overflow:hidden;background:#fff;margin-bottom:28px}.bl-book-image{display:grid;place-items:center;background:linear-gradient(145deg,#ebe5ff,#f7f4ff);padding:36px}.bl-book-image img{height:450px;width:100%;filter:drop-shadow(0 16px 12px #15153d25)}.bl-book-copy{padding:40px;align-self:center}.bl-edition{color:#6243a6;font-size:.68rem;font-weight:800;letter-spacing:.08em}.bl-book h2{font-size:clamp(2rem,3vw,2.8rem);font-weight:800;line-height:1.2;margin:12px 0 6px}.bl-book-subtitle{font-size:1.1rem!important;color:#6243a6!important;font-weight:500;margin:0 0 20px}.bl-book h3{font-size:.95rem;font-weight:700;margin-top:24px}.bl-topics{list-style:none;padding:0;margin:14px 0 22px;display:flex;flex-wrap:wrap;gap:8px}.bl-topics li{border:1px solid #e2dcf7;background:#f6f2ff;border-radius:7px;font-size:.76rem;line-height:1.5;padding:8px 11px}.bl-book-code{font-size:.75rem}.bl-book-math .bl-book-image{background:linear-gradient(145deg,#d9efeb,#f0faf8)}.bl-book-math .bl-edition,.bl-book-math .bl-book-subtitle{color:#086369!important}.bl-book-math .bl-topics li{background:#eef9f6;border-color:#d0e9e3}
.bl-buy{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:36px;align-items:center;background:#0d1947;border-radius:22px;padding:40px;margin:20px 0 56px;color:#fff}.bl-buy .bl-kicker{color:#ffd566}.bl-buy p{color:#e2e5f4}.bl-buy p:last-child{margin-bottom:0}.bl-buy-status{background:#ffffff0d;border:1px solid #ffffff30;border-radius:16px;padding:30px;text-align:center}.bl-buy-status>span,.bl-buy-status strong,.bl-buy-status time{display:block}.bl-buy-status .bl-status-dot{display:inline-block;background:#ffcf55;width:10px;height:10px;border-radius:50%;margin-bottom:12px}.bl-buy-status strong{font-size:1.2rem;margin-bottom:10px}.bl-buy-status>span{font-size:.8rem;color:#e2e5f4;line-height:1.7}.bl-buy-status time{font-size:1.45rem;font-weight:800;color:#ffcf55;letter-spacing:.05em;margin-top:24px}
.bl-faq{max-width:800px;margin:0 auto 40px}.bl-faq h2{text-align:center;margin-bottom:26px}.bl-faq details{border-bottom:1px solid #dedfee;padding:6px 0}.bl-faq summary{cursor:pointer;font-size:.95rem;font-weight:600;min-height:52px;padding:16px 4px;line-height:1.7}.bl-faq details p{font-size:.9rem;padding:0 4px 10px}.bl-end{text-align:center}.bl-end a{display:inline-flex;align-items:center;min-height:48px;color:var(--bl-purple);font-weight:600;font-size:.85rem}.bl-end p{font-size:.72rem;max-width:670px;margin:20px auto 0}
@media(max-width:980px){.bl-hero{gap:22px}.bl-showcase{gap:14px}.bl-showcase img{height:280px}.bl-book-copy{padding:28px}.bl-buy{gap:24px;padding:30px}}
@media(max-width:740px){.bl-hero{grid-template-columns:minmax(0,1fr);padding:12px 0 36px}.bl-hero h1{max-width:540px}.bl-showcase{max-width:530px;width:100%;justify-self:center;padding:28px 0}.bl-showcase img{height:300px}.bl-book{grid-template-columns:minmax(0,1fr)}.bl-book-image img{height:430px}.bl-buy{grid-template-columns:minmax(0,1fr)}.bl-hero-copy>p{max-width:none}}
@media(max-width:420px){.bl-wrap{padding:0 18px}.bl-hero h1{font-size:2.6rem}.bl-showcase img{height:240px}.bl-showcase figcaption{font-size:.52rem}.bl-actions .bl-button{flex:1 1 100%}.bl-book-image{padding:24px}.bl-book-image img{height:auto;max-height:420px}.bl-book-copy{padding:24px}.bl-buy{padding:26px 22px}.bl-buy-status{padding:24px 18px}.bl-book-copy .bl-button{width:100%}}