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.tour-finish{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff}.tour-step .tour-prev:hover{background:#e9ecef}.tour-step .tour-next:hover,.tour-step .tour-finish:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea4d}.tour-step .tour-dots{display:flex;gap:var(--spacing-xs)}.tour-step .tour-dot{width:8px;height:8px;border-radius:50%;background:#ddd;transition:background .3s ease}.tour-step .tour-dot.active{background:#667eea}.help-button{position:fixed;bottom:var(--spacing-lg);right:var(--spacing-lg);width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border:none;color:#fff;font-size:20px;cursor:pointer;box-shadow:0 4px 12px #0003;transition:all .3s ease;z-index:1000}.help-button:hover{transform:scale(1.1);box-shadow:0 6px 20px #0000004d}.keyboard-shortcuts{background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-radius:12px;padding:var(--spacing-lg);max-width:500px;margin:var(--spacing-lg) auto;box-shadow:0 10px 30px #0003}.keyboard-shortcuts .shortcuts-title{font-size:var(--font-size-h3);font-weight:var(--font-weight-bold);margin-bottom:var(--spacing-md);text-align:center}.shortcuts-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-md)}.shortcut-item{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-sm);background:rgba(0,0,0,.05);border-radius:8px}.shortcut-keys{display:flex;gap:var(--spacing-xs)}.shortcut-key{background:#f8f9fa;border:1px solid #ddd;border-radius:4px;padding:2px 6px;font-size:12px;font-weight:700;color:#333;min-width:20px;text-align:center}.shortcut-description{font-size:14px;color:#666}.nav-header{background:rgba(255,255,255,.1);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.2);position:sticky;top:0;z-index:100}.nav-container{max-width:1200px;margin:0 auto;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center}.nav-logo{color:#fff;text-decoration:none;font-size:1.5rem;font-weight:700;text-shadow:0 2px 4px rgba(0,0,0,.3)}.nav-menu{display:flex;gap:2rem}.nav-hamburger{display:none;flex-direction:column;cursor:pointer;gap:4px}.nav-hamburger span{width:25px;height:3px;background:white;transition:all .3s ease;border-radius:2px}.nav-hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.nav-hamburger.active span:nth-child(2){opacity:0}.nav-hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(7px,-6px)}.nav-link{color:#ffffffe6;text-decoration:none;padding:.5rem 1rem;border-radius:.5rem;transition:all .3s ease;text-shadow:0 1px 2px rgba(0,0,0,.5)}.nav-link:hover,.nav-link.active{color:#fff;background:rgba(255,255,255,.2)}.nav-link:focus{outline:2px solid rgba(255,255,255,.8);outline-offset:2px}.nav-github{display:flex;align-items:center;gap:.5rem;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2)}.nav-github:hover{background:rgba(255,255,255,.2);border-color:#fff6;transform:translateY(-1px)}.github-icon{font-size:1.2em;filter:grayscale(.2)}.github-text{font-weight:500;font-size:.9em}@media (max-width: 768px){.nav-container{padding:1rem;position:relative}.nav-menu{position:absolute;top:100%;left:0;right:0;background:rgba(255,255,255,.1);backdrop-filter:blur(10px);flex-direction:column;gap:0;padding:1rem 0;border-radius:0 0 12px 12px;box-shadow:0 4px 12px #0003;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .3s ease}.nav-menu.active{opacity:1;visibility:visible;transform:translateY(0)}.nav-link{padding:1rem;border-radius:0;text-align:center;border-bottom:1px solid rgba(255,255,255,.1)}.nav-link:last-child{border-bottom:none}.nav-hamburger{display:flex}}