:root{--color-primary:#6366f1;--color-primary-hover:#4f46e5;--color-primary-light:#e0e7ff;--color-primary-dark:#3730a3;--color-success:#10b981;--color-success-bg:#ecfdf5;--color-success-border:#6ee7b7;--color-warning:#f59e0b;--color-warning-bg:#fffbeb;--color-warning-border:#fcd34d;--color-danger:#ef4444;--color-danger-bg:#fef2f2;--color-danger-border:#fca5a5;--color-text:#0f172a;--color-text-secondary:#475569;--color-text-muted:#94a3b8;--color-bg:#f8fafc;--color-surface:#fff;--color-border:#e2e8f0;--color-border-light:#f1f5f9;--shadow-sm:0 1px 2px rgba(0,0,0,.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,.07),0 2px 4px -2px rgba(0,0,0,.05);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.08),0 4px 6px -4px rgba(0,0,0,.04);--shadow-xl:0 20px 25px -5px rgba(0,0,0,.1),0 8px 10px -6px rgba(0,0,0,.05);--shadow-glow:0 0 20px rgba(99,102,241,.15);--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--max-width:1100px;--font-sans:"Inter",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--font-mono:"JetBrains Mono","Fira Code",monospace;--gradient-primary:linear-gradient(135deg,#6366f1,#8b5cf6 50%,#a78bfa);--gradient-hero:linear-gradient(135deg,#0f172a,#1e1b4b 50%,#312e81);--gradient-card:linear-gradient(145deg,#fff,#f8fafc);--gradient-success:linear-gradient(135deg,#10b981,#34d399);--gradient-danger:linear-gradient(135deg,#ef4444,#f87171)}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--font-sans);color:var(--color-text);background-color:var(--color-bg);line-height:1.7;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--color-primary);text-decoration:none;transition:color .2s}a:hover{color:var(--color-primary-hover)}img,svg{display:block;max-width:100%}button,input,select,textarea{font:inherit}button{cursor:pointer}.container{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px;border-radius:4px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:var(--radius-md);font-weight:600;font-size:15px;border:none;transition:all .2s ease;text-decoration:none;cursor:pointer}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 14px rgba(99,102,241,.35)}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(99,102,241,.45);color:#fff}.btn-secondary{background:var(--color-surface);color:var(--color-text);border:1.5px solid var(--color-border);box-shadow:var(--shadow-sm)}.btn-secondary:hover{border-color:var(--color-primary);color:var(--color-primary);background:var(--color-primary-light)}.btn-success{background:var(--gradient-success);color:#fff;box-shadow:0 4px 14px rgba(16,185,129,.35)}.btn-danger{background:var(--gradient-danger);color:#fff;box-shadow:0 4px 14px rgba(239,68,68,.35)}.btn-lg{padding:16px 32px;font-size:17px;border-radius:var(--radius-lg)}.btn-sm{padding:8px 16px;font-size:13px}.btn-ghost{background:transparent;color:var(--color-text-secondary);border:none}.btn-ghost:hover{color:var(--color-primary);background:var(--color-primary-light)}.card{background:var(--gradient-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-md);transition:all .3s ease}.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.badge{display:inline-flex;align-items:center;gap:4px;padding:4px 12px;border-radius:var(--radius-full);font-size:13px;font-weight:600}.badge-success{background:var(--color-success-bg);color:#059669;border:1px solid var(--color-success-border)}.badge-warning{background:var(--color-warning-bg);color:#b45309;border:1px solid var(--color-warning-border)}.badge-danger{background:var(--color-danger-bg);color:#dc2626;border:1px solid var(--color-danger-border)}.badge-primary{background:var(--color-primary-light);color:var(--color-primary-dark);border:1px solid #c7d2fe}.input-group{margin-bottom:20px}.input-group label{display:block;margin-bottom:6px;font-weight:600;font-size:14px;color:var(--color-text)}.input{width:100%;padding:12px 16px;border:1.5px solid var(--color-border);border-radius:var(--radius-md);font-size:15px;color:var(--color-text);background:var(--color-surface);transition:all .2s}.input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(99,102,241,.12);outline:none}.input::placeholder{color:var(--color-text-muted)}.status-valid{background:linear-gradient(135deg,#ecfdf5,#d1fae5);border:2px solid var(--color-success);border-radius:var(--radius-lg)}.status-pending,.status-valid{padding:32px;text-align:center}.status-pending{background:linear-gradient(135deg,#fffbeb,#fef3c7);border:2px solid var(--color-warning);border-radius:var(--radius-lg)}.status-expired,.status-invalid,.status-revoked{background:linear-gradient(135deg,#fef2f2,#fecaca);border:2px solid var(--color-danger);border-radius:var(--radius-lg);padding:32px;text-align:center}.hero{background:var(--gradient-hero);color:#fff;padding:80px 0 60px;position:relative;overflow:hidden}.hero:before{top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(139,92,246,.15) 0,transparent 70%)}.hero:after,.hero:before{content:"";position:absolute;border-radius:50%}.hero:after{bottom:-30%;left:-10%;width:400px;height:400px;background:radial-gradient(circle,rgba(99,102,241,.1) 0,transparent 70%)}.hero h1{font-size:3rem;font-weight:800;line-height:1.1;letter-spacing:-.03em}.hero p{font-size:1.2rem;color:#cbd5e1;line-height:1.7;max-width:560px}.section{padding:64px 0}.section-header{text-align:center;margin-bottom:48px}.section-header h2{font-size:2rem;font-weight:700;letter-spacing:-.02em}.section-header p{color:var(--color-text-secondary);font-size:1.1rem;margin-top:8px}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:24px;gap:24px}.step{text-align:center;padding:32px 24px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);transition:all .3s}.step:hover{border-color:var(--color-primary);box-shadow:var(--shadow-glow);transform:translateY(-4px)}.step-icon{font-size:2.5rem;margin-bottom:16px}.step-number{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:var(--gradient-primary);color:#fff;font-size:14px;font-weight:700;margin-bottom:12px}.step h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}.step p{font-size:.9rem;color:var(--color-text-secondary);line-height:1.6}.trust-bar{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;padding:24px 0}.trust-badge{display:flex;align-items:center;gap:8px;padding:8px 16px;background:hsla(0,0%,100%,.08);border:1px solid hsla(0,0%,100%,.12);border-radius:var(--radius-full);font-size:14px;color:#e2e8f0}details{border:1px solid var(--color-border);border-radius:var(--radius-md);margin-bottom:8px;overflow:hidden}details summary{padding:16px 20px;cursor:pointer;font-weight:600;font-size:15px;background:var(--color-surface);transition:background .2s;list-style:none;display:flex;align-items:center;justify-content:space-between}details summary::-webkit-details-marker{display:none}details summary:after{content:"\25B8";transition:transform .2s;font-size:14px;color:var(--color-text-muted)}details[open] summary:after{transform:rotate(90deg)}details summary:hover{background:var(--color-primary-light)}details>div,details>p{padding:16px 20px;color:var(--color-text-secondary);line-height:1.7;border-top:1px solid var(--color-border)}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));grid-gap:24px}.grid-2,.grid-3{display:grid;gap:24px}.grid-3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-gap:24px}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.animate-in{animation:fadeInUp .5s ease-out forwards}.ref-code{font-family:var(--font-mono);font-size:1.5rem;font-weight:700;letter-spacing:.08em;color:var(--color-primary-dark);background:var(--color-primary-light);padding:8px 20px;border-radius:var(--radius-md);display:inline-block}@media (max-width:768px){.hero{padding:48px 0 40px}.hero h1{font-size:2rem}.hero p{font-size:1rem}.section{padding:40px 0}.btn-lg{padding:14px 24px;font-size:15px}.grid-2,.grid-3{grid-template-columns:1fr}.hamburger-btn{display:block!important}.nav-links{display:none!important;flex-direction:column;width:100%;gap:0!important;padding-top:12px;border-top:1px solid var(--color-border);margin-top:8px}.nav-links.nav-open{display:flex!important}.nav-links a,.nav-links button,.nav-links span{padding:10px 0;border-bottom:1px solid var(--color-border-light);width:100%}}