.app{width:100%;min-height:100vh;display:flex;flex-direction:column}@keyframes float{0%{transform:translateY(0) rotate(0)}50%{transform:translateY(-15px) rotate(2deg)}to{transform:translateY(0) rotate(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.hero-section,.features-section,.how-to-play-section,.audience-section{animation:fadeInUp .8s ease-out both}.hero-section{padding:100px 20px 80px;display:flex;flex-direction:column;align-items:center;text-align:center;background:transparent;position:relative}.hero-logo{width:160px;height:160px;border-radius:40px;box-shadow:0 20px 40px #4c6ef54d;margin-bottom:40px;border:4px solid white;animation:float 5s ease-in-out infinite;background-color:#fff}.hero-title{font-size:4.5rem;font-weight:900;color:var(--color-text-primary);margin-bottom:15px;letter-spacing:-2px;line-height:.9;background:linear-gradient(135deg,var(--color-primary-dark) 0%,var(--color-primary) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero-subtitle{font-size:1.5rem;color:var(--color-text-secondary);max-width:700px;margin-bottom:50px;line-height:1.5;font-weight:500}.btn-download{display:inline-flex;align-items:center;gap:12px;background:var(--color-primary);color:#fff;padding:18px 40px;border-radius:20px;font-weight:800;font-size:1.3rem;text-decoration:none;box-shadow:0 8px 0 var(--color-primary-dark),0 20px 30px #4c6ef566;transition:all .2s cubic-bezier(.175,.885,.32,1.275)}.btn-download:hover{transform:translateY(-4px);box-shadow:0 12px 0 var(--color-primary-dark),0 25px 40px #4c6ef580;background:var(--color-primary-light)}.btn-download:active{transform:translateY(4px);box-shadow:0 4px 0 var(--color-primary-dark)}.section-title{font-size:2.75rem;font-weight:900;color:var(--color-text-primary);text-align:center;margin-bottom:60px;letter-spacing:-1px}.section-title:after{content:"";display:block;width:80px;height:6px;background:var(--color-primary);border-radius:10px;margin:15px auto 0}.features-section{padding:100px 20px;width:100%}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px;max-width:1200px;margin:0 auto}.feature-card{background:#ffffffb3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:40px 30px;border-radius:40px;border:1px solid rgba(255,255,255,.5);box-shadow:0 10px 30px #00000008;display:flex;flex-direction:column;align-items:center;text-align:center;transition:all .3s cubic-bezier(.175,.885,.32,1.275)}.feature-card:hover{transform:translateY(-15px) scale(1.02);background:#fff;box-shadow:0 30px 60px #4c6ef526;border-color:var(--color-primary-light)}.feature-icon-circle{width:90px;height:90px;border-radius:30px;display:flex;align-items:center;justify-content:center;margin-bottom:25px;border:4px solid rgba(255,255,255,.8);font-size:2.5rem;transition:transform .3s ease}.feature-card:hover .feature-icon-circle{transform:rotate(10deg) scale(1.1)}.feature-title{font-size:1.75rem;font-weight:800;color:var(--color-text-primary);margin-bottom:15px}.feature-desc{color:var(--color-text-secondary);line-height:1.6;font-size:1.1rem}.mode-sum{background:linear-gradient(135deg,#a8e063,#56ab2f);color:#fff}.mode-minus{background:linear-gradient(135deg,#f96,#ff5e62);color:#fff}.mode-multiply{background:linear-gradient(135deg,#c471ed,#f64f59);color:#fff}.mode-divide{background:linear-gradient(135deg,#2193b0,#6dd5ed);color:#fff}.mode-comb{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff}.how-to-play-section{padding:100px 20px;max-width:1100px;margin:0 auto}.how-to-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin-bottom:60px}.how-step{padding:30px;background:#fff;border-radius:30px;display:flex;flex-direction:column;align-items:center;text-align:center;box-shadow:0 10px 20px #00000005;border:1px solid #eee}.step-num{width:56px;height:56px;background:var(--color-primary);color:#fff;border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:1.75rem;font-weight:900;margin-bottom:20px;box-shadow:0 8px 0 var(--color-primary-dark)}.example-box{background:#fff;padding:40px;border-radius:35px;text-align:center;font-size:1.5rem;font-weight:700;color:var(--color-primary-dark);box-shadow:0 20px 40px #4c6ef51a;border:2px solid var(--color-primary-light);max-width:600px;margin:0 auto}.audience-section{padding:100px 20px}.audience-grid{display:flex;justify-content:center;flex-wrap:wrap;gap:25px;max-width:1200px;margin:0 auto}.audience-item{background:#fff;padding:30px 40px;border-radius:30px;display:flex;align-items:center;gap:20px;box-shadow:0 10px 30px #0000000d;font-size:1.25rem;font-weight:700;transition:transform .3s ease}.audience-item:hover{transform:scale(1.05)}.audience-icon{font-size:2.5rem}.info-block{padding:30px;text-align:center;background:#fff9;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);border-radius:30px;border:1px solid white;max-width:800px;margin:60px auto;font-size:1.2rem;color:var(--color-text-secondary)}.footer{padding:80px 20px;background:#101214;color:#fff;text-align:center}.footer-links{display:flex;justify-content:center;gap:30px;margin-bottom:40px}.footer-link{color:#fff9;text-decoration:none;font-weight:600;font-size:1.1rem;transition:color .3s}.footer-link:hover{color:var(--color-primary-light)}.footer-copy{color:#fff6;font-size:.9rem;margin-top:20px}@media (max-width: 768px){.hero-title{font-size:3rem}.hero-subtitle{font-size:1.2rem}.section-title{font-size:2.2rem}.hero-logo{width:120px;height:120px}.footer-links{flex-direction:column;gap:15px}}:root{--color-bg-primary: #F0F4F8;--color-bg-secondary: #E1E8ED;--color-surface: #FFFFFF;--color-surface-elevated: #F8F9FA;--color-surface-hover: #F1F3F5;--color-primary: #4C6EF5;--color-primary-light: #748FFC;--color-primary-dark: #364FC7;--color-secondary: #12B886;--color-secondary-light: #38D9A9;--color-secondary-dark: #087F5B;--color-accent: #FD7E14;--color-yellow: #FCC419;--color-text-primary: #343A40;--color-text-secondary: #868E96;--color-text-light: #FFFFFF;--color-success: #40C057;--color-error: #FA5252;--color-warning: #FAB005;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 20px;--spacing-xxl: 24px;--spacing-huge: 48px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--radius-xl: 32px;--radius-round: 9999px;--shadow-sm: 0 2px 4px rgba(76, 110, 245, .1);--shadow-md: 0 4px 8px rgba(76, 110, 245, .15);--shadow-lg: 0 8px 16px rgba(76, 110, 245, .2);--shadow-block: 0 6px 0 rgba(76, 110, 245, .2);--transition-fast: .2s cubic-bezier(.4, 0, .2, 1);--transition-normal: .3s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth}body{margin:0;font-family:Outfit,sans-serif;background-color:var(--color-bg-primary);background-image:radial-gradient(at 0% 0%,hsla(227,100%,95%,1) 0,transparent 50%),radial-gradient(at 50% 0%,hsla(225,100%,92%,1) 0,transparent 50%),radial-gradient(at 100% 0%,hsla(164,100%,95%,1) 0,transparent 50%);color:var(--color-text-primary);min-height:100vh;overflow-x:hidden}code{font-family:Courier New,Courier,monospace}html{scroll-behavior:smooth}*:focus-visible{outline:3px solid var(--color-primary);outline-offset:4px}::selection{background:#4c6ef533;color:var(--color-primary-dark)}::-webkit-scrollbar{width:10px}::-webkit-scrollbar-track{background:var(--color-bg-primary)}::-webkit-scrollbar-thumb{background:var(--color-primary-light);border-radius:10px;border:2px solid var(--color-bg-primary)}::-webkit-scrollbar-thumb:hover{background:var(--color-primary)}