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var(--primary)}.btn.btn-outline:hover:not(:disabled){background:var(--primary);color:var(--text-inverse)}.btn.btn-ghost{background:transparent;color:var(--text-secondary)}.btn.btn-ghost:hover:not(:disabled){background:var(--bg-tertiary);color:var(--text-primary)}.btn.btn-sm{padding:.5rem 1rem;font-size:.875rem}.btn.btn-lg{padding:1rem 2rem;font-size:1.1rem}.btn.btn-icon{padding:.75rem;border-radius:var(--radius-full)}.btn.btn-icon svg{width:20px;height:20px}.card{background:var(--bg-card);backdrop-filter:blur(12px);border-radius:var(--radius-xl);padding:1.5rem;border:1px solid var(--border-color);transition:all var(--transition-base)}.card:hover{border-color:var(--border-color-hover);box-shadow:var(--shadow-lg)}.input-group{display:flex;flex-direction:column;gap:.5rem}.input-group label{font-size:.875rem;font-weight:500;color:var(--text-secondary)}.input{padding:.875rem 1rem;border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:1rem;font-family:inherit;background:var(--bg-secondary);color:var(--text-primary);transition:all var(--transition-fast)}.input::placeholder{color:var(--text-muted)}.input:hover{border-color:var(--border-color-hover)}.input:focus{outline:none;border-color:var(--border-color-focus);box-shadow:0 0 0 3px var(--primary-light)}.badge{display:inline-flex;align-items:center;padding:.25rem .75rem;border-radius:var(--radius-full);font-size:.75rem;font-weight:600;letter-spacing:.02em}.badge.badge-primary{background:var(--primary-light);color:var(--primary)}.badge.badge-secondary{background:var(--secondary-light);color:var(--secondary)}.badge.badge-success{background:var(--primary-light);color:var(--primary)}.badge.badge-warning{background:var(--accent-light);color:var(--accent)}.badge.badge-error{background:#ef44441a;color:#ef4444}.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;background:transparent;transition:all var(--transition-base)}.nav.scrolled{background:#0a0f1ad9;backdrop-filter:blur(16px);box-shadow:0 4px 30px #0000004d;border-bottom:1px solid var(--border-color)}[data-theme=light] .nav.scrolled{background:#ffffffe6;box-shadow:var(--shadow-md)}.nav .logo{font-size:1.375rem;font-weight:700;color:var(--text-primary);display:flex;align-items:center;gap:.5rem}.nav .logo .logo-icon{width:32px;height:32px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center}.nav .logo .logo-icon svg{width:18px;height:18px;color:#fff}.nav .nav-links{display:flex;gap:1.5rem;align-items:center}.nav .nav-links a{color:var(--text-secondary);font-weight:500;font-size:.95rem;transition:color var(--transition-fast)}.nav .nav-links a:hover{color:var(--primary)}.gradient-text{background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.section-header{text-align:center;max-width:700px;margin:0 auto 4rem}.section-header h2{font-size:2.5rem;font-weight:700;color:var(--text-primary);margin-bottom:1rem;line-height:1.2;letter-spacing:-.02em}.section-header p{font-size:1.125rem;color:var(--text-secondary)}.spinner{width:20px;height:20px;border:2px solid transparent;border-top-color:currentColor;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.skeleton{background:linear-gradient(90deg,var(--bg-tertiary) 25%,var(--bg-card-hover) 50%,var(--bg-tertiary) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-md)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media (max-width: 640px){.container{padding:0 1rem}.section-header{margin-bottom:2rem}.section-header h2{font-size:1.5rem}.section-header p{font-size:1rem}.nav{padding:.75rem 1rem}.nav .nav-links{display:none}.btn{padding:.625rem 1.25rem;font-size:.9rem}.btn.btn-sm{padding:.5rem .875rem;font-size:.8rem}.btn.btn-lg{padding:.875rem 1.5rem;font-size:1rem}}@media (min-width: 641px) and (max-width: 768px){.container{padding:0 1.25rem}}@media (min-width: 769px) and (max-width: 1024px){.container{padding:0 1.5rem}}@media (min-width: 1025px){.container{max-width:1280px}}.mobile-nav-overlay{display:none;position:fixed;inset:0;background:#00000080;z-index:999;animation:fadeIn .2s ease}.mobile-nav-overlay.active{display:block}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}