:root{--brand:#673ab7;--brand-dark:#3e1e8c;--brand-grad:linear-gradient(270deg,#673ab7,#3e1e8c);--success:#10c469;--info:#3db9dc;--danger:#ff5d48;--warning:#f7a600;--dark:#28282e;--muted:#7a7d84;--light:#f9f9f9;--border:#e6e6e6;--white:#ffffff;--radius:12px;--shadow:0 10px 30px rgba(40,40,46,0.08);--font:"Nunito",system-ui,-apple-system,"Segoe UI",sans-serif}*{box-sizing:border-box}body,html{padding:0;margin:0}body{font-family:var(--font);font-size:15px;color:var(--dark);background:var(--light);line-height:1.6;min-height:100vh}a{color:inherit;text-decoration:none}h1,h2,h3{margin:0 0 .4em;font-weight:800;letter-spacing:-.01em}.container{width:100%;max-width:1080px;margin:0 auto;padding:0 20px}.nav{position:-webkit-sticky;position:sticky;top:0;z-index:20;background:rgba(255,255,255,.85);-webkit-backdrop-filter:saturate(180%) blur(10px);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--border)}.nav-inner{display:flex;align-items:center;gap:24px;height:68px}.nav .logo img{height:30px;width:auto;display:block}.nav-links{display:flex;gap:22px;margin-left:12px}.nav-links a{color:var(--muted);font-weight:600;font-size:14px}.nav-links a:hover{color:var(--brand)}.nav-spacer{flex:1 1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:999px;padding:12px 24px;font-family:var(--font);font-weight:700;font-size:15px;cursor:pointer;transition:transform .05s ease,box-shadow .2s ease,opacity .2s ease}.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 8px 20px rgba(103,58,183,.35)}.btn-primary:hover{box-shadow:0 10px 26px rgba(103,58,183,.45)}.btn-primary:active{transform:translateY(1px)}.btn-primary:disabled{opacity:.6;cursor:default;box-shadow:none}.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--border)}.btn-sm{padding:8px 16px;font-size:14px}.hero{padding:64px 0 32px;text-align:center}.hero .eyebrow{color:var(--brand);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:13px}.hero h1{font-size:44px;margin-top:8px}.hero p.sub{color:var(--muted);font-size:18px;max-width:620px;margin:8px auto 0}.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.card-pad{padding:28px}.grid{display:grid;grid-gap:20px;gap:20px}@media (min-width:820px){.grid-2{grid-template-columns:1fr 1fr}}.vbox{display:flex;gap:10px;margin-top:8px}.input{flex:1 1;padding:14px 16px;border:1px solid var(--border);border-radius:999px;font-family:var(--font);font-size:15px;background:#fff;color:var(--dark);outline:none}.input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(103,58,183,.12)}textarea.input{border-radius:12px;resize:vertical;min-height:120px}.label{font-weight:700;font-size:14px;margin-bottom:6px;display:block}.hint{color:var(--muted);font-size:13px;margin-top:8px}.result{margin-top:20px;padding:18px;border-radius:var(--radius);border:1px solid var(--border);background:var(--light)}.badge{display:inline-flex;align-items:center;gap:7px;padding:5px 14px;border-radius:999px;font-size:13px;font-weight:800}.badge.valid{background:rgba(16,196,105,.14);color:var(--success)}.badge.invalid{background:rgba(255,93,72,.14);color:var(--danger)}.badge.indet{background:rgba(247,166,0,.16);color:var(--warning)}.badge.pending{background:rgba(61,185,220,.16);color:var(--info)}.kv{display:flex;justify-content:space-between;padding:7px 0;font-size:14px;border-top:1px solid var(--border)}.kv:first-of-type{border-top:none}.kv .k{color:var(--muted)}.dot{width:8px;height:8px;border-radius:50%;display:inline-block}.stats{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px}.stat{flex:1 1;min-width:100px;text-align:center;padding:14px;border-radius:10px;background:var(--light);border:1px solid var(--border)}.stat .n{font-size:24px;font-weight:800}.stat .l{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.bar{height:8px;background:var(--border);border-radius:999px;overflow:hidden;margin-top:14px}.bar>span{display:block;height:100%;background:var(--brand-grad);transition:width .4s ease}.footer{color:var(--muted);font-size:13px;text-align:center;padding:40px 0;margin-top:48px;border-top:1px solid var(--border)}.spin{width:16px;height:16px;border:2px solid rgba(255,255,255,.5);border-top-color:#fff;border-radius:50%;animation:sp .7s linear infinite}@keyframes sp{to{transform:rotate(1turn)}}