:root{--primary: #f3f4f6;--primary-light: #ffffff;--accent: #1f3a8a;--accent-hover: #1e40af;--accent-glow: rgba(31, 58, 138, .15);--text: #111827;--text-muted: #6b7280;--border: #e5e7eb;--input-bg: #ffffff;--error: #b91c1c;--success: #16a34a}*{margin:0;padding:0;box-sizing:border-box}body{font-family:DM Sans,sans-serif;background:var(--primary);color:var(--text);min-height:100vh;line-height:1.6}.page-wrapper{min-height:100vh;background:var(--primary)}.container{max-width:1400px;margin:0 auto;padding:40px 24px}.logos-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:40px;padding:0 20px}.logo-keysight img,.logo-sae img{height:60px;width:auto}.main-content{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}.left-column{padding:20px}.ebook-image{margin-bottom:30px}.ebook-image img{width:100%;max-width:500px;height:auto;border-radius:8px;box-shadow:0 10px 30px 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