:root{--color-scheme:dark;--bg-primary:#060a15;--bg-secondary:#0d1225;--bg-card:rgba(255, 255, 255, 0.03);--bg-card-hover:rgba(255, 255, 255, 0.06);--bg-elevated:rgba(255, 255, 255, 0.06);--bg-input:rgba(255, 255, 255, 0.05);--border-glass:rgba(255, 255, 255, 0.06);--border-glass-hover:rgba(255, 255, 255, 0.12);--border-glass-active:rgba(0, 212, 255, 0.3);--text-primary:#f0f4f8;--text-secondary:#8899b4;--text-muted:#5a6a85;--accent-cyan:#00d4ff;--accent-blue:#0ea5e9;--accent-purple:#8b5cf6;--accent-gold:#f59e0b;--accent-green:#10b981;--accent-red:#ef4444;--accent-pink:#ec4899;--gradient-primary:linear-gradient(135deg, #00d4ff, #0ea5e9);--gradient-accent:linear-gradient(135deg, #8b5cf6, #0ea5e9);--gradient-gold:linear-gradient(135deg, #f59e0b, #ef4444);--gradient-green:linear-gradient(135deg, #10b981, #059669);--gradient-cyber:linear-gradient(135deg, #00d4ff, #8b5cf6);--shadow-glow:0 0 30px rgba(0, 212, 255, 0.12);--shadow-glow-strong:0 0 40px rgba(0, 212, 255, 0.2);--shadow-card:0 8px 32px rgba(0, 0, 0, 0.4);--shadow-elevated:0 20px 60px rgba(0, 0, 0, 0.5);--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--radius-2xl:24px;--transition-fast:0.2s cubic-bezier(0.4, 0, 0.2, 1);--transition-normal:0.3s cubic-bezier(0.4, 0, 0.2, 1);--transition-slow:0.5s cubic-bezier(0.4, 0, 0.2, 1);--font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;--font-mono:'SF Mono','Fira Code','Fira Mono',monospace}[data-theme=light]{--color-scheme:light;--bg-primary:#f0f2f5;--bg-secondary:#e4e7ec;--bg-card:rgba(255, 255, 255, 0.75);--bg-card-hover:rgba(255, 255, 255, 0.92);--bg-elevated:rgba(255, 255, 255, 0.9);--bg-input:rgba(0, 0, 0, 0.04);--border-glass:rgba(0, 0, 0, 0.08);--border-glass-hover:rgba(0, 0, 0, 0.14);--border-glass-active:rgba(0, 212, 255, 0.5);--text-primary:#0b0d14;--text-secondary:#2d3748;--text-muted:#5a6577;--shadow-glow:0 0 30px rgba(0, 212, 255, 0.08);--shadow-glow-strong:0 0 40px rgba(0, 212, 255, 0.12);--shadow-card:0 8px 32px rgba(0, 0, 0, 0.08);--shadow-elevated:0 20px 60px rgba(0, 0, 0, 0.1)}[data-theme=light] nav{background:rgba(240,242,245,.85)}[data-theme=light] nav.scrolled{background:rgba(240,242,245,.92);box-shadow:0 4px 30px rgba(0,0,0,.08)}[data-theme=light] .mobile-drawer{background:rgba(228,231,236,.97);box-shadow:-10px 0 40px rgba(0,0,0,.08)}[data-theme=light] .toast{background:rgba(240,242,245,.95);border:1px solid rgba(0,0,0,.1)}[data-theme=light] .nav-links a:hover{background:rgba(0,0,0,.05)}[data-theme=light] .nav-links a.active{background:rgba(0,212,255,.12)}[data-theme=light] .mobile-drawer-links a:hover{background:rgba(0,0,0,.05)}[data-theme=light] .mobile-drawer-links a.active{background:rgba(0,212,255,.15)}[data-theme=light] .mobile-drawer-close:hover{background:rgba(0,0,0,.06)}[data-theme=light] .btn-secondary{background:rgba(0,0,0,.04);border:1px solid var(--border-glass)}[data-theme=light] .btn-secondary:hover{background:rgba(0,0,0,.08)}[data-theme=light] .action-btn{background:rgba(0,0,0,.03)}[data-theme=light] .action-btn:hover{background:rgba(0,0,0,.06)}[data-theme=light] .result-item{background:rgba(0,0,0,.02);border-color:rgba(0,0,0,.04)}[data-theme=light] .result-item:hover{background:rgba(0,0,0,.04);border-color:rgba(0,0,0,.06)}[data-theme=light] .skeleton{background:linear-gradient(90deg,rgba(0,0,0,.03) 25%,rgba(0,0,0,.06) 50%,rgba(0,0,0,.03) 75%)}[data-theme=light] ::-webkit-scrollbar-thumb{background:rgba(0,0,0,.1)}[data-theme=light] ::-webkit-scrollbar-track{background:var(--bg-secondary)}[data-theme=light] .grid-overlay{background-image:linear-gradient(rgba(0,0,0,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(0,0,0,.03) 1px,transparent 1px)}[data-theme=light] .animated-bg .orb:first-child{background:rgba(0,212,255,.06)}[data-theme=light] .animated-bg .orb:nth-child(2){background:rgba(139,92,246,.04)}[data-theme=light] .animated-bg .orb:nth-child(3){background:rgba(245,158,11,.03)}[data-theme=light] .animated-bg .orb:nth-child(4){background:rgba(16,185,129,.03)}[data-theme=light] .hero h1{background:linear-gradient(135deg,#1a1d24 0,#4a5568 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}[data-theme=light] .education-content .tip-box{background:linear-gradient(135deg,rgba(0,212,255,.08),rgba(0,212,255,.04))}[data-theme=light] .disclaimer-banner{background:linear-gradient(135deg,rgba(245,158,11,.06),rgba(245,158,11,.03))}*,::after,::before{transition:background-color .35s ease,border-color .35s ease,color .35s ease,box-shadow .35s ease,opacity .35s ease}.mobile-drawer,.toast,nav{transition:background-color .35s ease,border-color .35s ease,box-shadow .35s ease,backdrop-filter .35s ease}@media (prefers-reduced-motion:reduce){*,::after,::before{transition:none!important;animation-duration:0s!important;animation-iteration-count:1!important}.animated-bg .orb{animation:none!important}html{scroll-behavior:auto}}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow-x:hidden;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.animated-bg{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}.animated-bg .orb{position:absolute;border-radius:50%;filter:blur(100px);opacity:.3;animation:orbFloat 25s ease-in-out infinite;will-change:transform}.animated-bg .orb:first-child{width:600px;height:600px;background:rgba(0,212,255,.12);top:-15%;left:-8%;animation-delay:0s}.animated-bg .orb:nth-child(2){width:500px;height:500px;background:rgba(139,92,246,.1);bottom:-10%;right:-5%;animation-delay:-7s}.animated-bg .orb:nth-child(3){width:350px;height:350px;background:rgba(245,158,11,.06);top:45%;left:55%;transform:translate(-50%,-50%);animation-delay:-14s}.animated-bg .orb:nth-child(4){width:250px;height:250px;background:rgba(16,185,129,.06);top:20%;right:15%;animation-delay:-21s}@keyframes orbFloat{0%,100%{transform:translate(0,0) scale(1)}20%{transform:translate(60px,-40px) scale(1.08)}40%{transform:translate(-40px,50px) scale(.92)}60%{transform:translate(50px,30px) scale(1.05)}80%{transform:translate(-30px,-50px) scale(.95)}}.grid-overlay{position:fixed;inset:0;background-image:linear-gradient(rgba(255,255,255,.015) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.015) 1px,transparent 1px);background-size:60px 60px;z-index:0;pointer-events:none}nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(6,10,21,.85);backdrop-filter:blur(24px) saturate(1.4);-webkit-backdrop-filter:blur(24px) saturate(1.4);border-bottom:1px solid var(--border-glass);transition:all var(--transition-normal)}nav.scrolled{background:rgba(6,10,21,.92);box-shadow:0 4px 30px rgba(0,0,0,.4)}.nav-inner{max-width:1400px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:68px}.nav-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-primary);font-weight:700;font-size:1.2rem;transition:opacity var(--transition-fast)}.nav-brand:hover{opacity:.9}.nav-brand .logo-icon{width:34px;height:34px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0}.nav-brand .logo-icon img{width:100%;height:100%;object-fit:contain}.nav-links{display:flex;gap:2px;list-style:none;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}.nav-links::-webkit-scrollbar{display:none}.nav-links a{text-decoration:none;color:var(--text-secondary);padding:8px 14px;border-radius:var(--radius-sm);font-size:.875rem;font-weight:500;transition:all var(--transition-fast);white-space:nowrap;position:relative}.nav-links a:hover{color:var(--text-primary);background:rgba(255,255,255,.06)}.nav-links a.active{color:var(--accent-cyan);background:rgba(0,212,255,.1)}.nav-links a.active::after{content:'';position:absolute;bottom:-1px;left:50%;transform:translateX(-50%);width:60%;height:2px;background:var(--gradient-primary);border-radius:1px;box-shadow:0 0 10px rgba(0,212,255,.4)}.mobile-menu-btn{display:none;background:0 0;border:none;color:var(--text-primary);cursor:pointer;padding:8px;position:relative;z-index:1002}.mobile-menu-btn svg{transition:transform var(--transition-fast)}.mobile-menu-btn:hover svg{transform:scale(1.1)}.mobile-drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:998;opacity:0;pointer-events:none;transition:opacity var(--transition-normal)}.mobile-drawer-overlay.active{opacity:1;pointer-events:auto}.mobile-drawer{position:fixed;top:0;right:-320px;width:300px;max-width:85vw;height:100vh;background:rgba(10,14,26,.97);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-left:1px solid var(--border-glass);z-index:1001;transition:right var(--transition-slow);padding:24px;overflow-y:auto;box-shadow:-10px 0 40px rgba(0,0,0,.4)}.mobile-drawer.open{right:0}.mobile-drawer-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px;padding-bottom:16px;border-bottom:1px solid var(--border-glass)}.mobile-drawer-header .logo-icon{width:32px;height:32px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0}.mobile-drawer-header .logo-icon img{width:100%;height:100%;object-fit:contain}.mobile-drawer-close{background:0 0;border:none;color:var(--text-secondary);cursor:pointer;padding:8px;border-radius:50%;transition:all var(--transition-fast)}.mobile-drawer-close:hover{color:var(--text-primary);background:rgba(255,255,255,.08)}.mobile-drawer-links{list-style:none;display:flex;flex-direction:column;gap:4px}.mobile-drawer-links a{display:flex;align-items:center;gap:12px;padding:14px 16px;color:var(--text-secondary);text-decoration:none;border-radius:var(--radius-sm);font-size:.95rem;font-weight:500;transition:all var(--transition-fast)}.mobile-drawer-links a:hover{color:var(--text-primary);background:rgba(255,255,255,.06)}.mobile-drawer-links a.active{color:var(--accent-cyan);background:rgba(0,212,255,.1)}.mobile-drawer-footer{margin-top:32px;padding-top:24px;border-top:1px solid var(--border-glass)}.mobile-drawer-footer a{display:block;color:var(--text-muted);text-decoration:none;padding:8px 16px;font-size:.85rem;transition:color var(--transition-fast)}.mobile-drawer-footer a:hover{color:var(--text-secondary)}.theme-toggle-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-sm);background:rgba(255,255,255,.06);border:1px solid var(--border-glass);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);flex-shrink:0}.theme-toggle-btn:hover{background:rgba(255,255,255,.1);color:var(--accent-cyan);border-color:var(--border-glass-hover)}.theme-toggle-btn:active{transform:scale(.94)}.theme-toggle-btn .sun-icon{display:none}.theme-toggle-btn .moon-icon{display:block}[data-theme=light] .theme-toggle-btn{background:rgba(0,0,0,.05)}[data-theme=light] .theme-toggle-btn:hover{background:rgba(0,0,0,.08);color:var(--accent-gold)}[data-theme=light] .theme-toggle-btn .sun-icon{display:block}[data-theme=light] .theme-toggle-btn .moon-icon{display:none}.drawer-theme-btn{display:flex!important;align-items:center;gap:8px;width:100%;padding:10px 16px!important;margin-bottom:12px;border-radius:var(--radius-sm)!important;font-size:.85rem;color:var(--text-secondary);cursor:pointer;font-family:inherit;font-weight:500}.drawer-theme-btn:hover{color:var(--accent-cyan)}.drawer-theme-btn .sun-text{display:none}.drawer-theme-btn .moon-text{display:inline}[data-theme=light] .drawer-theme-btn .sun-text{display:inline}[data-theme=light] .drawer-theme-btn .moon-text{display:none}.currency-selector select{background:rgba(255,255,255,.06);border:1px solid var(--border-glass);color:var(--text-primary);padding:7px 32px 7px 12px;border-radius:var(--radius-sm);font-size:.82rem;font-family:inherit;font-weight:600;cursor:pointer;outline:0;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath fill='%238899b4' d='M5 7L1 3h8z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;transition:all var(--transition-fast)}.currency-selector select:hover{background:rgba(255,255,255,.1);border-color:var(--border-glass-hover)}.currency-selector select:focus{border-color:var(--accent-cyan);box-shadow:0 0 0 3px rgba(0,212,255,.15)}.currency-selector select option{background:var(--bg-secondary);color:var(--text-primary)}.container{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:0 24px}.hero{padding:120px 0 40px;text-align:center;position:relative}.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(0,212,255,.08);border:1px solid rgba(0,212,255,.15);color:var(--accent-cyan);padding:5px 14px;border-radius:50px;font-size:.75rem;font-weight:600;margin-bottom:20px;letter-spacing:.3px;animation:fadeInUp .6s ease}.hero h1{font-size:3rem;font-weight:800;line-height:1.12;margin-bottom:14px;background:linear-gradient(135deg,#f0f4f8 0,#8899b4 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:fadeInUp .6s ease 80ms both}.hero h1 .highlight{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero p{font-size:1.05rem;color:var(--text-secondary);max-width:560px;margin:0 auto 28px;animation:fadeInUp .6s ease .15s both}.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;animation:fadeInUp .6s ease .22s both}.hero-stats{display:flex;gap:32px;justify-content:center;margin-top:40px;animation:fadeInUp .6s ease .3s both}.hero-stat{text-align:center}.hero-stat .number{font-size:1.6rem;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-stat .label{font-size:.8rem;color:var(--text-muted);margin-top:2px}.section{display:none;animation:fadeInSection .4s ease}.section.active{display:block}.section-header{text-align:center;margin-bottom:32px}.section-header h1,.section-header h2{font-size:1.8rem;font-weight:700;margin-bottom:8px;letter-spacing:-.02em}.section-header p{color:var(--text-secondary);max-width:500px;margin:0 auto;font-size:.95rem}@keyframes fadeInSection{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.reveal-section{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}.reveal-section.revealed{opacity:1;transform:translateY(0)}.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:32px}.calc-grid.full{grid-template-columns:1fr}.calc-card{background:var(--bg-card);border:1px solid var(--border-glass);border-radius:var(--radius-xl);padding:28px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:all var(--transition-normal);position:relative;overflow:hidden}.calc-card::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(0,212,255,.2),transparent);opacity:0;transition:opacity var(--transition-normal)}.calc-card:hover::before{opacity:1}.calc-card:hover{border-color:var(--border-glass-hover);box-shadow:var(--shadow-card);transform:translateY(-2px);background:var(--bg-card-hover)}.calc-card h3{font-size:1.05rem;font-weight:600;margin-bottom:20px;display:flex;align-items:center;gap:8px}.calc-card h3 .badge{font-size:.65rem;background:rgba(0,212,255,.1);color:var(--accent-cyan);padding:2px 10px;border-radius:50px;font-weight:500}.tool-cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}.tool-card{background:var(--bg-card);border:1px solid var(--border-glass);border-radius:var(--radius-lg);padding:24px;cursor:pointer;transition:all var(--transition-normal);position:relative;overflow:hidden}.tool-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:var(--gradient-primary);opacity:0;transition:opacity var(--transition-normal)}.tool-card:hover::before{opacity:1}.tool-card:hover{border-color:var(--border-glass-hover);box-shadow:var(--shadow-card);transform:translateY(-3px);background:var(--bg-card-hover)}.tool-card h3{font-size:1rem;font-weight:600;margin-bottom:8px}.tool-card p{color:var(--text-secondary);font-size:.85rem;margin-bottom:14px;line-height:1.5}.tool-card .tool-tags{display:flex;gap:6px;flex-wrap:wrap}.tool-card .tool-tag{font-size:.7rem;padding:2px 10px;border-radius:50px;font-weight:500}.tool-tag.cyan{background:rgba(0,212,255,.1);color:var(--accent-cyan)}.tool-tag.green{background:rgba(16,185,129,.1);color:var(--accent-green)}.tool-tag.gold{background:rgba(245,158,11,.1);color:var(--accent-gold)}.tool-tag.purple{background:rgba(139,92,246,.1);color:var(--accent-purple)}.tool-tag.red{background:rgba(239,68,68,.1);color:var(--accent-red)}.form-group{margin-bottom:14px}.form-group label{display:block;font-size:.82rem;font-weight:500;color:var(--text-secondary);margin-bottom:5px}.form-group label .required{color:var(--accent-red);margin-left:2px}.form-input{width:100%;padding:11px 14px;background:var(--bg-input);border:1px solid var(--border-glass);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.9rem;font-family:inherit;transition:all var(--transition-fast);outline:0}.form-input:hover{border-color:var(--border-glass-hover)}.form-input:focus{border-color:var(--accent-cyan);box-shadow:0 0 0 3px rgba(0,212,255,.1)}.form-input::placeholder{color:var(--text-muted);font-size:.85rem}.form-select{width:100%;padding:11px 14px;background:var(--bg-input);border:1px solid var(--border-glass);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.9rem;font-family:inherit;cursor:pointer;outline:0;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238899b4' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px;transition:all var(--transition-fast)}.form-select:hover{border-color:var(--border-glass-hover)}.form-select:focus{border-color:var(--accent-cyan);box-shadow:0 0 0 3px rgba(0,212,255,.1)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}.input-with-suffix{position:relative}.input-with-suffix .suffix{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:.85rem;font-weight:500;pointer-events:none}.input-with-suffix .form-input{padding-right:34px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 24px;border:none;border-radius:var(--radius-sm);font-size:.88rem;font-weight:600;font-family:inherit;cursor:pointer;transition:all 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