.h-stack-container{position:relative;width:100%}.h-stack-sticky{position:sticky;top:0;height:100vh;width:100%;overflow:hidden;display:flex;align-items:center;justify-content:center;background:radial-gradient(ellipse at 50% 50%,rgba(212,175,55,.06) 0%,transparent 60%)}.h-stack-card-wrapper{will-change:transform,opacity;backface-visibility:hidden}.h-stack-card{width:80vw;max-width:1000px;height:75vh;max-height:650px;background:#111;border:1px solid rgba(255,255,255,.08);border-radius:8px;overflow:hidden;box-shadow:0 40px 80px #0006,0 15px 30px #00000040}[data-theme=light] .h-stack-card{background:#fff;border-color:#00000014;box-shadow:0 40px 80px #00000026,0 15px 30px #0000001a}[data-theme=light] .h-stack-sticky{background:radial-gradient(ellipse at 50% 50%,rgba(212,175,55,.08) 0%,transparent 60%)}.h-stack-progress{position:absolute;bottom:40px;left:50%;transform:translate(-50%);display:flex;gap:12px;z-index:100}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);font-family:var(--font-body);font-size:var(--text-base);font-weight:500;line-height:1;text-decoration:none;border:none;border-radius:var(--radius-base);cursor:pointer;transition:all var(--duration-fast) var(--easing-default)}.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--surface-alt);border-color:var(--border-hover)}.btn-ghost{background:transparent;color:var(--text)}.btn-ghost:hover{background:var(--surface)}.btn-lg{padding:var(--space-4) var(--space-8);font-size:var(--text-lg)}.btn-sm{padding:var(--space-2) var(--space-4);font-size:var(--text-sm)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn:disabled:hover{transform:none;box-shadow:none}.form-group{display:flex;flex-direction:column;gap:var(--space-2)}.form-label{font-size:var(--text-sm);font-weight:500;color:var(--text)}.form-input,.form-select,.form-textarea{width:100%;padding:var(--space-3) var(--space-4);font-size:var(--text-base);color:var(--text);background:var(--background);border:1px solid var(--border);border-radius:var(--radius-base);transition:border-color var(--duration-fast) var(--easing-default),box-shadow var(--duration-fast) var(--easing-default)}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #3b82f61a}.form-input::placeholder{color:var(--text-muted)}.form-textarea{min-height:120px;resize:vertical}.form-select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right var(--space-3) center;padding-right:var(--space-10)}.form-check{display:flex;align-items:center;gap:var(--space-3);cursor:pointer}.form-check-input{width:18px;height:18px;accent-color:var(--accent);cursor:pointer}.form-check-label{font-size:var(--text-base);color:var(--text);cursor:pointer}.toggle{position:relative;width:48px;height:26px}.toggle-input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--border);border-radius:var(--radius-full);cursor:pointer;transition:background var(--duration-fast) var(--easing-default)}.toggle-slider:before{content:"";position:absolute;left:3px;top:3px;width:20px;height:20px;background:#fff;border-radius:50%;transition:transform var(--duration-fast) var(--easing-default);box-shadow:var(--shadow-sm)}.toggle-input:checked+.toggle-slider{background:var(--accent)}.toggle-input:checked+.toggle-slider:before{transform:translate(22px)}.toggle-input:focus-visible+.toggle-slider{outline:2px solid var(--accent);outline-offset:2px}.card{background:var(--background);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-6);transition:box-shadow var(--duration-normal) var(--easing-default),transform var(--duration-normal) var(--easing-default)}.card-hover:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.card-surface{background:var(--surface);border:none}.card-header{margin-bottom:var(--space-4)}.card-title{font-size:var(--text-xl);font-weight:600;color:var(--text)}.card-description{font-size:var(--text-base);color:var(--text-secondary);margin-top:var(--space-2)}.card-content{color:var(--text-secondary)}.card-footer{margin-top:var(--space-6);padding-top:var(--space-4);border-top:1px solid var(--border)}.service-card{padding:var(--space-8)}.service-card-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--surface-alt);border-radius:var(--radius-md);color:var(--accent);margin-bottom:var(--space-4)}.service-card-title{font-size:var(--text-xl);font-weight:600;margin-bottom:var(--space-2)}.service-card-description{color:var(--text-secondary);line-height:1.6}.pricing-card{padding:var(--space-8);text-align:center}.pricing-card-featured{border-color:var(--accent);position:relative}.pricing-card-featured:before{content:"Most Popular";position:absolute;top:0;left:50%;transform:translate(-50%,-50%);background:var(--accent);color:#fff;padding:var(--space-1) var(--space-4);border-radius:var(--radius-full);font-size:var(--text-sm);font-weight:500}.pricing-price{font-family:var(--font-heading);font-size:var(--text-5xl);font-weight:700;color:var(--text)}.pricing-period{font-size:var(--text-base);color:var(--text-muted);font-weight:400}.pricing-features{list-style:none;margin:var(--space-6) 0;text-align:left}.pricing-feature{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) 0;color:var(--text-secondary)}.pricing-feature-icon{color:var(--color-emerald-500);flex-shrink:0}.badge{display:inline-flex;align-items:center;padding:var(--space-1) var(--space-3);font-size:var(--text-xs);font-weight:500;border-radius:var(--radius-full);background:var(--surface-alt);color:var(--text-secondary)}.badge-primary{background:var(--color-blue-100);color:var(--color-blue-700)}.badge-success{background:var(--color-emerald-100, #D1FAE5);color:var(--color-emerald-700, #047857)}.badge-warning{background:#fef3c7;color:#b45309}.badge-error{background:#fee2e2;color:#b91c1c}.alert{display:flex;gap:var(--space-3);padding:var(--space-4);border-radius:var(--radius-base);border:1px solid var(--border);background:var(--surface)}.alert-icon{flex-shrink:0}.alert-content{flex:1}.alert-title{font-weight:600;margin-bottom:var(--space-1)}.alert-description{color:var(--text-secondary);font-size:var(--text-sm)}.alert-info{background:var(--color-blue-50);border-color:var(--color-blue-200)}.alert-info .alert-icon{color:var(--color-blue-500)}.alert-success{background:var(--color-emerald-50);border-color:var(--color-emerald-200, #A7F3D0)}.alert-success .alert-icon{color:var(--color-emerald-500)}.alert-warning{background:#fffbeb;border-color:#fde68a}.alert-warning .alert-icon{color:var(--color-warning)}.alert-error{background:#fef2f2;border-color:#fecaca}.alert-error .alert-icon{color:var(--color-error)}.skeleton{background:linear-gradient(90deg,var(--surface) 0%,var(--surface-alt) 50%,var(--surface) 100%);background-size:200% 100%;animation:skeleton-loading 1.5s ease-in-out infinite;border-radius:var(--radius-base)}.skeleton-text{height:1rem;width:100%}.skeleton-title{height:1.5rem;width:60%}.skeleton-avatar{width:48px;height:48px;border-radius:50%}.skeleton-card{height:200px}@keyframes skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.navbar{position:fixed;top:0;left:0;right:0;z-index:100;background:#fffc;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:background var(--duration-normal) var(--easing-default)}[data-theme=dark] .navbar{background:#0f172acc}.navbar-container{display:flex;align-items:center;justify-content:space-between;height:72px;padding:0 var(--space-6);max-width:1280px;margin:0 auto}.navbar-logo{display:flex;align-items:center;gap:var(--space-2);font-family:var(--font-heading);font-size:var(--text-xl);font-weight:700;color:var(--text)}.navbar-logo svg{width:32px;height:32px}.navbar-nav{display:flex;align-items:center;gap:var(--space-8);list-style:none}.navbar-link{font-size:var(--text-base);font-weight:500;color:var(--text-secondary);transition:color var(--duration-fast) var(--easing-default)}.navbar-link:hover,.navbar-link.active{color:var(--text)}.navbar-actions{display:flex;align-items:center;gap:var(--space-4)}.navbar-toggle{display:none;padding:var(--space-2);background:none;border:none;cursor:pointer;color:var(--text)}@media(max-width:768px){.navbar-nav{display:none}.navbar-toggle{display:flex}.navbar-actions .btn{display:none}}.mobile-menu{position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;background:var(--background);padding:var(--space-6);display:flex;flex-direction:column}.mobile-menu-header{display:flex;align-items:center;justify-content:space-between;padding-bottom:var(--space-6);border-bottom:1px solid var(--border)}.mobile-menu-nav{display:flex;flex-direction:column;gap:var(--space-4);padding:var(--space-6) 0;list-style:none}.mobile-menu-link{font-size:var(--text-xl);font-weight:500;color:var(--text);padding:var(--space-2) 0}.mobile-menu-close{padding:var(--space-2);background:none;border:none;cursor:pointer;color:var(--text)}.footer{background:var(--surface);border-top:1px solid var(--border);padding:var(--space-16) 0 var(--space-8)}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:var(--space-12)}@media(max-width:768px){.footer-grid{grid-template-columns:1fr;gap:var(--space-8)}}.footer-brand{max-width:300px}.footer-brand-logo{display:flex;align-items:center;gap:var(--space-2);font-family:var(--font-heading);font-size:var(--text-xl);font-weight:700;color:var(--text);margin-bottom:var(--space-4)}.footer-brand-description{color:var(--text-secondary);font-size:var(--text-sm);line-height:1.6}.footer-column-title{font-weight:600;color:var(--text);margin-bottom:var(--space-4);font-size:var(--text-sm);text-transform:uppercase;letter-spacing:.05em}.footer-links{list-style:none;display:flex;flex-direction:column;gap:var(--space-3)}.footer-link{color:var(--text-secondary);font-size:var(--text-sm);transition:color var(--duration-fast) var(--easing-default)}.footer-link:hover{color:var(--text)}.footer-bottom{margin-top:var(--space-12);padding-top:var(--space-6);border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;font-size:var(--text-sm);color:var(--text-muted)}@media(max-width:640px){.footer-bottom{flex-direction:column;gap:var(--space-4);text-align:center}}:root{--color-slate-50: #F8FAFC;--color-slate-100: #F1F5F9;--color-slate-200: #E2E8F0;--color-slate-300: #CBD5E1;--color-slate-400: #94A3B8;--color-slate-500: #64748B;--color-slate-600: #475569;--color-slate-700: #334155;--color-slate-800: #1E293B;--color-slate-900: #0F172A;--color-slate-950: #020617;--color-blue-50: #EFF6FF;--color-blue-100: #DBEAFE;--color-blue-200: #BFDBFE;--color-blue-300: #93C5FD;--color-blue-400: #60A5FA;--color-blue-500: #3B82F6;--color-blue-600: #2563EB;--color-blue-700: #1D4ED8;--color-blue-800: #1E40AF;--color-blue-900: #1E3A8A;--color-emerald-500: #10B981;--color-emerald-600: #059669;--color-success: #10B981;--color-warning: #F59E0B;--color-error: #EF4444;--color-info: #3B82F6;--background: #FFFFFF;--surface: #F8FAFC;--surface-alt: #F1F5F9;--border: #E2E8F0;--border-hover: #CBD5E1;--text: #0F172A;--text-secondary: #475569;--text-muted: #94A3B8;--accent: #3B82F6;--accent-hover: #2563EB;--font-heading: "Inter Tight", system-ui, sans-serif;--font-body: "Inter", system-ui, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--text-5xl: 3rem;--text-6xl: 3.75rem;--text-7xl: 4.5rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--space-32: 8rem;--radius-sm: .25rem;--radius-base: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-base: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1);--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);--duration-fast: .15s;--duration-normal: .25s;--duration-slow: .35s;--easing-default: cubic-bezier(.4, 0, .2, 1);--easing-out: cubic-bezier(0, 0, .2, 1)}[data-theme=dark]{--background: #0F172A;--surface: #1E293B;--surface-alt: #334155;--border: #334155;--border-hover: #475569;--text: #F8FAFC;--text-secondary: #CBD5E1;--text-muted: #64748B}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);font-size:var(--text-base);line-height:1.5;color:var(--text);background-color:var(--background)}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.1;letter-spacing:-.025em;color:var(--text)}h1{font-size:var(--text-6xl)}h2{font-size:var(--text-5xl)}h3{font-size:var(--text-4xl)}h4{font-size:var(--text-3xl)}h5{font-size:var(--text-2xl)}h6{font-size:var(--text-xl)}@media(max-width:768px){h1{font-size:var(--text-4xl)}h2{font-size:var(--text-3xl)}h3{font-size:var(--text-2xl)}}a{color:var(--accent);text-decoration:none;transition:color var(--duration-fast) var(--easing-default)}a:hover{color:var(--accent-hover)}img{max-width:100%;height:auto;display:block}button,input,select,textarea{font-family:inherit;font-size:inherit}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 var(--space-6)}@media(max-width:640px){.container{padding:0 var(--space-4)}}.section{padding:var(--space-24) 0}.section-sm{padding:var(--space-16) 0}.section-lg{padding:var(--space-32) 0}.grid{display:grid;gap:var(--space-6)}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media(max-width:1024px){.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}.flex{display:flex}.flex-col{flex-direction:column}.flex-center{display:flex;align-items:center;justify-content:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.items-center{align-items:center}.justify-center{justify-content:center}.gap-2{gap:var(--space-2)}.gap-4{gap:var(--space-4)}.gap-6{gap:var(--space-6)}.gap-8{gap:var(--space-8)}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.text-muted{color:var(--text-muted)}.text-secondary{color:var(--text-secondary)}.text-accent{color:var(--accent)}.text-sm{font-size:var(--text-sm)}.text-lg{font-size:var(--text-lg)}.text-xl{font-size:var(--text-xl)}.mt-4{margin-top:var(--space-4)}.mt-6{margin-top:var(--space-6)}.mt-8{margin-top:var(--space-8)}.mb-4{margin-bottom:var(--space-4)}.mb-6{margin-bottom:var(--space-6)}.mb-8{margin-bottom:var(--space-8)}.max-w-prose{max-width:65ch}.max-w-xl{max-width:36rem}.max-w-2xl{max-width:42rem}.max-w-3xl{max-width:48rem}.max-w-4xl{max-width:56rem}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}