Instant Math Problem Roller

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:root { --primary: #F59E0B; --primary-hover: #D97706; --bg-body: #FFFFFF; --bg-card: #F9FAFB; --text-main: #1F2937; --text-sub: #4B5563; --border-color: #E5E7EB; --radius-md: 12px; --radius-lg: 20px; --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1); --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1); } /* Core Layout & Typography Reset */ .product-detail-container { max-width: 1200px; margin: 0 auto; padding: clamp(2rem, 5%, 4rem) 5%; box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--text-main); background: var(--bg-body); overflow-wrap: break-word; word-break: break-word; line-height: 1.7; } .product-detail-container *, .product-detail-container *::before, .product-detail-container *::after { box-sizing: border-box; } /* Typography System */ .product-detail-container h1 { font-size: clamp(32px, 5vw, 44px); line-height: 1.2; font-weight: 800; margin: 0 0 1.5rem 0; color: var(--text-main); letter-spacing: -0.02em; } .product-detail-container h2 { font-size: clamp(24px, 4vw, 32px); line-height: 1.3; font-weight: 700; margin: 0 0 1rem 0; color: var(--text-main); } .product-detail-container h3 { font-size: clamp(20px, 3vw, 24px); line-height: 1.4; font-weight: 600; margin: 0 0 1rem 0; color: var(--text-main); } .product-detail-container p { font-size: clamp(18px, 2vw, 20px); color: var(--text-sub); margin: 0 0 1.5rem 0; } .product-detail-container .subtitle { font-size: clamp(20px, 2.5vw, 24px); color: var(--text-sub); font-weight: 400; } /* Non-clickable Visual Badges */ .visual-badge { display: inline-block; background: var(--bg-card); color: var(--primary-hover); padding: 0.5rem 1.2rem; border-radius: 50px; font-size: 16px; font-weight: 600; margin-bottom: 1rem; border: 1px solid var(--border-color); letter-spacing: 0.05em; text-transform: uppercase; } /* Image Placeholders (Simulating Natural Flow) */ .image-placeholder { width: 100%; height: auto; aspect-ratio: 4/3; background: var(--bg-card); border: 2px dashed #CBD5E1; border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; color: #64748b; font-size: 18px; font-weight: bold; margin: 0; } /* Spacing Modules */ .module-spacer { margin-top: clamp(3rem, 8vw, 6rem); } /* Hero Section */ .hero-section { text-align: center; max-width: 900px; margin: 0 auto; } /* Feature Lock System (Strict Mobile Ordering) */ .feature-item { display: flex; gap: clamp(2rem, 5vw, 4rem); align-items: center; margin-bottom: clamp(3rem, 8vw, 6rem); } .feature-media, .feature-copy { flex: 1; min-width: 0; /* Prevents flex blowout */ } .feature-copy ul { padding-left: 1.5rem; margin-bottom: 1.5rem; } .feature-copy li { font-size: clamp(18px, 2vw, 20px); color: var(--text-sub); margin-bottom: 0.75rem; } /* Specifications Table */ .specs-container { background: var(--bg-card); padding: clamp(2rem, 5vw, 4rem); border-radius: var(--radius-lg); } .specs-table { width: 100%; border-collapse: collapse; margin-top: 2rem; } .specs-table th, .specs-table td { padding: 1.2rem; text-align: left; border-bottom: 1px solid var(--border-color); font-size: clamp(16px, 1.8vw, 18px); } .specs-table th { font-weight: 600; color: var(--text-main); background: transparent; } /* FAQ Section */ .faq-container { max-width: 800px; margin: 0 auto; } .faq-item { border-bottom: 1px solid var(--border-color); padding: 1.5rem 0; } .faq-question { font-size: clamp(20px, 2.5vw, 22px); font-weight: 600; color: var(--text-main); margin-bottom: 0.75rem; } .faq-answer { font-size: clamp(18px, 2vw, 20px); color: var(--text-sub); margin: 0; } /* Responsive Rules */ @media (max-width: 767px) { /* Mobile Ordering Lock */ .feature-item { flex-direction: column !important; } .feature-media { width: 100%; order: 1; /* Force Image First */ } .feature-copy { width: 100%; order: 2; /* Force Text Second */ } /* Mobile Table Card Layout */ .specs-table, .specs-table thead, .specs-table tbody, .specs-table tr, .specs-table th, .specs-table td { display: block; width: 100%; } .specs-table thead { display: none; } .specs-table tr { background: var(--bg-body); border: 1px solid var(--border-color); border-radius: var(--radius-md); margin-bottom: 1rem; box-shadow: var(--shadow-sm); } .specs-table td { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-color); padding: 1rem; text-align: right; } .specs-table td:last-child { border-bottom: none; } .specs-table td::before { content: attr(data-label); font-weight: 600; color: var(--text-main); margin-right: 1rem; text-align: left; flex-shrink: 0; } } @media (min-width: 768px) { /* Desktop Z-Pattern */ .feature-item:nth-child(even) { flex-direction: row-reverse; } } Trusted by Parents & Teachers Make Math Practice Fun in Seconds The adjustable digital stamp roller that prints up to 100 math problems instantly. Say goodbye to handwritten worksheets and hello to effortless learning. Skill Development Cultivate Logical Thinking Rotate the columns to access 10 different equation queues. Covering all addition and subtraction combinations from 1 to 100, this tool builds strong logical calculation abilities while feeling entirely like a game. Adjustable column types for varied difficulty Encourages daily, stress-free practice Transforms screen time into brain time Efficient & Fast Print Perfect Problems Instantly Prepare a full page of math challenges with a single, gentle roll. The high-quality ink dries almost instantly, ensuring crisp, smudge-free numbers every single time. Pro Tip: Simply change the arrangement every 10 equations to avoid duplication and keep your child's mind sharp! Infinite Reusability Compact, Portable, and Refillable Small and exquisitely designed, this learning companion goes wherever your child goes. Once the imprint begins to lighten, simply add a few drops of ink to the side compartment, and it's ready for thousands of more rolls. An incredibly meaningful and engaging gift for birthdays, holidays, or back-to-school season. Product Specifications Everything you need to know about your new math practice companion. Specification Details (Metric) Details (Imperial) Functionality Addition & Subtraction (1-100) Addition & Subtraction (1-100) Dimensions 4.5 × 3.0 × 4.8 cm 1.8 × 1.2 × 1.9 in Weight 45.0 g 1.6 oz Material BPA-Free Durable ABS BPA-Free Durable ABS Ink Status Quick-drying / Refillable Quick-drying / Refillable Frequently Asked Questions How do I refill the ink when it runs out? It's simple and mess-free! Just open the secure cap on the side of the roller, drop in 5-6 drops of the provided ink, and let it sit for about 2 minutes. The stamp will absorb the ink and be ready to roll clearly again. Will the ink bleed through regular printer paper? No. Our specialized quick-drying formula is designed to sit perfectly on standard notebook or printer paper without smudging or bleeding through to the other side. What age group is this stamp best suited for? This educational roller is perfect for preschoolers and primary school children (typically ages 4 to 9) who are currently learning and mastering basic arithmetic skills like addition and subtraction. Show more