.math-hero{background:linear-gradient(120deg,#edf4fa,#fff5e8);padding:55px 0 45px}.math-hero h1{font-size:clamp(36px,5vw,57px);line-height:1.12;letter-spacing:-1.8px;margin:16px 0}.math-hero p{max-width:650px;color:var(--muted)}.breadcrumbs{font-size:12px;color:var(--muted)}.breadcrumbs a{text-decoration:underline;text-underline-offset:3px}.math-tools{display:flex;gap:14px;justify-content:space-between;align-items:center;margin:30px 0}.math-tools input,.math-tools select{padding:12px 14px;border:1px solid var(--line);border-radius:6px;color:var(--navy);background:white;font:inherit;font-size:14px}.math-tools input{flex:1;max-width:480px}.math-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.math-card{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:white;display:flex;flex-direction:column}.math-card:hover{border-color:var(--orange)}.math-card[hidden]{display:none}.math-card img{display:block;width:100%;height:auto;aspect-ratio:5/3;object-fit:contain;background:#f5f8fc}.math-card-body{padding:22px;flex:1;display:flex;flex-direction:column}.math-category{font-size:11px;text-transform:uppercase;letter-spacing:1.1px;color:var(--blue);font-weight:700}.math-card h2{font-size:21px;letter-spacing:-.5px;line-height:1.25;margin:10px 0}.math-card p{font-size:14px;line-height:1.6;color:var(--muted);margin:0 0 20px}.math-card-actions{margin-top:auto;display:flex;gap:12px;align-items:center;flex-wrap:wrap}.math-card-actions .btn{font-size:12px;padding:8px 12px}.math-card-actions .text-btn{font-size:12px;margin:0}.math-note{font-size:12px;color:var(--muted);margin-top:20px}.math-product{display:grid;grid-template-columns:1.05fr 1fr;gap:55px;align-items:start}.math-product-visual{background:#f5f8fc;border:1px solid var(--line);border-radius:12px;overflow:hidden}.math-product-visual img{display:block;width:100%;height:auto}.math-product-visual figcaption{font-size:12px;padding:14px 20px;border-top:1px solid var(--line);color:var(--muted)}.math-product figure{margin:0}.math-product h1{font-size:clamp(32px,4vw,46px);line-height:1.1;letter-spacing:-1.4px;margin:14px 0 22px}.math-product p{color:var(--muted)}.math-quote-note{background:#fff5e8;border-left:4px solid var(--orange);padding:17px 22px;font-size:14px;margin:26px 0}.math-quote-note strong{color:var(--navy)}.math-summary{padding-top:50px;padding-bottom:50px}.math-summary h2{font-size:27px}.math-summary .math-grid{margin-top:25px}#math-empty[hidden]{display:none}@media(max-width:1000px){.math-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.math-product{gap:28px}}@media(max-width:650px){.math-grid,.math-product{grid-template-columns:1fr}.math-tools{align-items:stretch;flex-direction:column}.math-tools input{max-width:none}.math-hero{padding:34px 0}.math-product h1{font-size:35px}}