:root{--primary-color: #2563eb;--primary-hover: #1d4ed8;--secondary-color: #64748b;--accent-color: #f59e0b;--success-color: #10b981;--background-color: #f8fafc;--surface-color: #ffffff;--text-primary: #1e293b;--text-secondary: #64748b;--text-muted: #94a3b8;--border-color: #e2e8f0;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--border-radius: 12px;--border-radius-lg: 16px;--transition: all .3s cubic-bezier(.4, 0, .2, 1)}body.dark-theme{--background-color: #1a1a1a;--surface-color: #2d2d2d;--text-primary: #ffffff;--text-secondary: #e0e0e0;--text-muted: #b0b0b0;--border-color: #404040;--primary-color: #4dabf7;--primary-hover: #3b8fd9;--accent-color: #ffd700;--success-color: #10b981;--hero-title-color: #87CEEB;--hero-subtitle-color: #b0c4de;--border-accent: #555555;--card-bg: #2d2d2d;--section-bg: #2d2d2d;--nav-item-bg: #2d2d2d;--tool-link-bg: #3d3d3d;--tool-link-hover: #4d4d4d;--button-bg: #4a4a4a;--button-hover: #5a5a5a}body.dark-theme{background-color:var(--background-color);color:var(--text-primary);transition:background-color .3s,color .3s}body.dark-theme main,body.dark-theme .main-content{background-color:var(--background-color);color:var(--text-primary)}body.dark-theme header{background-color:var(--surface-color);box-shadow:0 2px 10px #0000004d;border-bottom:1px solid var(--border-color)}body.dark-theme .nav-menu,body.dark-theme .main-menu{background-color:var(--surface-color)}body.dark-theme .main-menu a{color:var(--text-primary);background-color:var(--surface-color);border:1px solid transparent;transition:all .3s ease}body.dark-theme .main-menu a:hover{background-color:var(--primary-color);color:#fff;border-color:var(--border-color);transform:translateY(-2px)!important}body.dark-theme .dropdown-menu{background-color:var(--surface-color);border:2px solid var(--border-color);box-shadow:0 8px 16px #0000004d}body.dark-theme .dropdown-menu a{color:var(--text-primary);background-color:var(--surface-color);border-bottom:1px solid var(--border-color)}body.dark-theme .dropdown-menu a:hover{background-color:var(--primary-color);color:#fff;border-color:var(--border-color)}body.dark-theme .hero-section{background:linear-gradient(135deg,var(--card-bg) 0%,var(--section-bg) 100%);border-bottom:3px solid var(--border-color);margin:0;padding:60px 0;width:100%;position:relative;min-height:auto;color:var(--text-primary)}body.dark-theme .hero-title{color:var(--hero-title-color);text-shadow:2px 2px 4px rgba(0,0,0,.5);background:none;-webkit-background-clip:unset;-webkit-text-fill-color:unset;background-clip:unset;font-weight:700;letter-spacing:1px}body.dark-theme .hero-subtitle{color:var(--hero-subtitle-color);text-shadow:1px 1px 2px rgba(0,0,0,.3);opacity:1;font-weight:400;letter-spacing:.5px}body.dark-theme .hero-section:before{background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%23e0e0e0" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="%23e0e0e0" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="%23e0e0e0" opacity="0.1"/><circle cx="10" cy="60" r="0.5" fill="%23e0e0e0" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="%23e0e0e0" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>')}body.dark-theme .container{background-color:var(--background-color)}body.dark-theme .tile{background:linear-gradient(135deg,var(--surface-color) 0%,var(--card-bg) 100%);border:2px solid var(--border-color);box-shadow:0 4px 6px -1px #0000004d,0 2px 4px -2px #0000004d;transition:all .3s ease}body.dark-theme .tile:hover{border-color:var(--primary-color);box-shadow:0 20px 25px -5px #0006,0 8px 10px -6px #0006;transform:translateY(-8px)}body.dark-theme .tile-image{background:linear-gradient(135deg,var(--card-bg) 0%,var(--border-color) 100%);border-bottom:1px solid var(--border-color)}body.dark-theme .tile-icon{background:linear-gradient(135deg,var(--primary-color) 0%,var(--accent-color) 100%);border:2px solid var(--border-color)}body.dark-theme .tile h2{color:var(--text-primary);text-shadow:1px 1px 2px rgba(0,0,0,.3)}body.dark-theme .tile p{color:var(--text-secondary)}body.dark-theme .btn{background-color:var(--button-bg);color:var(--text-primary);border:2px solid var(--border-color);transition:all .3s ease}body.dark-theme .btn:hover{background-color:var(--button-hover);border-color:var(--primary-color);transform:translateY(-2px)}body.dark-theme .btn-primary{background:linear-gradient(135deg,var(--primary-color) 0%,var(--accent-color) 100%);color:#fff;border:2px solid var(--border-color)}body.dark-theme .btn-primary:hover{background:linear-gradient(135deg,var(--primary-hover) 0%,var(--accent-color) 100%);border-color:var(--border-color);box-shadow:0 4px 8px #ffd7004d}body.dark-theme #theme-toggle{background-color:var(--surface-color);border:2px solid var(--border-color);color:var(--accent-color);box-shadow:0 2px 4px #0000004d}*{box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--background-color);color:var(--text-primary);margin:0;padding:0;line-height:1.6;transition:var(--transition)}.main-content{min-height:100vh;padding-top:80px}.hero-section{background:var(--surface-color);color:var(--text-primary);padding:60px 0;text-align:center;position:relative;overflow:hidden;border-bottom:1px solid var(--border-color)}.hero-section:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%236b7280" opacity="0.05"/><circle cx="75" cy="75" r="1" fill="%236b7280" opacity="0.05"/><circle cx="50" cy="10" r="0.5" fill="%236b7280" opacity="0.05"/><circle cx="10" cy="60" r="0.5" fill="%236b7280" opacity="0.05"/><circle cx="90" cy="40" r="0.5" fill="%236b7280" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');opacity:.3}.hero-section .container{position:relative;z-index:1}.hero-title{font-size:3.5rem;font-weight:800;margin:0 0 16px;color:var(--text-primary);letter-spacing:-.025em}.hero-subtitle{font-size:1.25rem;font-weight:500;color:var(--text-secondary);max-width:600px;margin:0 auto;line-height:1.5}.container{max-width:1200px;margin:0 auto;padding:0 24px}.tile-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:32px;margin:60px 0;padding:0}.tile{background:var(--surface-color);border-radius:var(--border-radius-lg);overflow:hidden;box-shadow:var(--shadow-md);transition:var(--transition);border:1px solid var(--border-color);position:relative;display:flex;flex-direction:column}.tile:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl);border-color:var(--primary-color)}.tile-image{width:100%;height:220px;object-fit:cover;background:linear-gradient(135deg,#f1f5f9,#e2e8f0);transition:var(--transition)}.tile:hover .tile-image{transform:scale(1.05)}.tile-content{padding:32px;flex-grow:1;display:flex;flex-direction:column;gap:16px}.tile-header{display:flex;align-items:center;gap:16px;margin-bottom:8px}.tile-icon{font-size:2rem;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary-color) 0%,#3b82f6 100%);color:#fff;border-radius:12px;flex-shrink:0}.tile h2{color:var(--text-primary);margin:0;font-size:1.5rem;font-weight:700;line-height:1.3}.tile p{color:var(--text-secondary);margin:0;font-size:1rem;line-height:1.6;flex-grow:1}.tile-features{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}.feature-tag{background:var(--primary-color);color:#fff;padding:4px 12px;border-radius:20px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.025em}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;text-decoration:none;color:#fff;background:var(--primary-color);border-radius:8px;font-weight:600;font-size:.875rem;transition:var(--transition);border:none;cursor:pointer;text-align:center;min-height:44px;margin-top:16px}.btn:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-primary{background:linear-gradient(135deg,var(--primary-color) 0%,#3b82f6 100%);font-size:1rem;padding:16px 32px}.btn-primary:hover{background:linear-gradient(135deg,var(--primary-hover) 0%,#1d4ed8 100%)}#theme-toggle{position:fixed;top:100px;right:24px;z-index:1000;background:var(--surface-color);border:1px solid var(--border-color);border-radius:50%;width:48px;height:48px;font-size:1.25rem;cursor:pointer;transition:var(--transition);box-shadow:var(--shadow-md)}#theme-toggle:hover{transform:scale(1.1);box-shadow:var(--shadow-lg)}@media (max-width: 1200px){.tile-container{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}.hero-title{font-size:3rem}}@media (max-width: 768px){.main-content{padding-top:60px}.hero-section{padding:40px 0}.hero-title{font-size:2.5rem}.hero-subtitle{font-size:1.125rem}.tile-container{grid-template-columns:1fr;gap:20px;margin:40px 0}.tile-content{padding:24px}.tile-image{height:180px}.container{padding:0 16px}#theme-toggle{top:80px;right:16px;width:40px;height:40px;font-size:1rem}}@media (max-width: 480px){.hero-title{font-size:2rem}.hero-subtitle{font-size:1rem}.tile-content{padding:20px}.tile-header{flex-direction:column;text-align:center;gap:12px}.tile-icon{width:40px;height:40px;font-size:1.5rem}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.tile{animation:fadeInUp .6s ease-out forwards}.tile:nth-child(1){animation-delay:.1s}.tile:nth-child(2){animation-delay:.2s}.tile:nth-child(3){animation-delay:.3s}.tile:nth-child(4){animation-delay:.4s}.tile:nth-child(5){animation-delay:.5s}.btn:focus,#theme-toggle:focus{outline:2px solid var(--primary-color);outline-offset:2px}.tile.loading{opacity:.7;pointer-events:none}.tile.loading:after{content:"";position:absolute;top:50%;left:50%;width:20px;height:20px;margin:-10px 0 0 -10px;border:2px solid var(--border-color);border-top:2px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}