:root{--primary-color: #1890ff;--primary-hover: #40a9ff;--primary-active: #096dd9;--success-color: #52c41a;--warning-color: #faad14;--error-color: #ff4d4f;--text-primary: #000000d9;--text-secondary: #00000073;--background-default: #ffffff;--background-secondary: #fafafa;--border-color: #d9d9d9;--shadow-card: 0 1px 2px -2px rgba(0, 0, 0, .16), 0 3px 6px 0 rgba(0, 0, 0, .12), 0 5px 12px 4px rgba(0, 0, 0, .09);--shadow-elevated: 0 6px 16px 0 rgba(0, 0, 0, .08), 0 3px 6px -4px rgba(0, 0, 0, .12), 0 9px 28px 8px rgba(0, 0, 0, .05)}*{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif;background-color:var(--background-default);color:var(--text-primary)}.container{max-width:1200px;margin:0 auto;padding:0 24px}.section{padding:80px 0}.section-sm{padding:40px 0}.text-center{text-align:center}.text-primary{color:var(--primary-color)}.text-secondary{color:var(--text-secondary)}.mb-0{margin-bottom:0}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}.mb-4{margin-bottom:32px}.mb-5{margin-bottom:48px}.mt-0{margin-top:0}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:32px}.mt-5{margin-top:48px}.flex{display:flex}.flex-column{flex-direction:column}.align-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-2{gap:16px}.gap-3{gap:24px}.full-width{width:100%}.card{background:var(--background-default);border-radius:8px;box-shadow:var(--shadow-card);padding:24px}.hero-section{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:120px 0;text-align:center}.hero-title{font-size:3.5rem;font-weight:700;margin-bottom:24px;line-height:1.2}.hero-subtitle{font-size:1.25rem;margin-bottom:48px;opacity:.9;max-width:600px;margin-left:auto;margin-right:auto}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:32px;margin-top:64px}.feature-card{text-align:center;padding:40px 24px}.feature-icon{font-size:3rem;color:var(--primary-color);margin-bottom:24px}.feature-title{font-size:1.5rem;font-weight:600;margin-bottom:16px}.feature-description{color:var(--text-secondary);line-height:1.6}@media (max-width: 768px){.hero-title{font-size:2.5rem}.hero-subtitle{font-size:1.1rem}.section{padding:60px 0}.container{padding:0 16px}}