:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#10162e;background:#f6f7f9;font-synthesis:none;--blue:#3155e7;--muted:#657086;--border:#dce0e8;--surface:#fff;--radius:16px}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}button,a{touch-action:manipulation}button{min-height:44px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #91a6ff;outline-offset:3px}input,select{width:100%;min-height:48px;border:1px solid var(--border);border-radius:8px;background:white;color:inherit;padding:11px 13px;font-size:16px;transition:border-color .15s}input:focus,select:focus{border-color:var(--blue)}input::placeholder{color:#8a91a2}input[aria-invalid=true]{border-color:#bc3248}svg{flex-shrink:0}button svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}[hidden]{display:none!important}.shell{width:min(100% - 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32px);width:max-content;font-size:14px;box-shadow:0 5px 30px #10162e22}.copy-fallback{width:100%;height:150px;font:14px monospace}footer{padding-bottom:max(28px,env(safe-area-inset-bottom))}@media(min-width:720px){.shell{width:min(100% - 64px,1040px)}.header{padding-block:26px}.intro{padding:28px 0 30px}.intro h1{font-size:46px;letter-spacing:-1.8px}.intro p{font-size:18px}.workspace{grid-template-columns:1.08fr 1fr;gap:28px}.payment-card{padding:28px}.result-card{padding:28px}.result-card.empty{min-height:462px}.field{margin-top:23px}.amount-wrap input{height:76px;font-size:42px}.primary{margin-top:26px}.result-card canvas{width:248px}footer{padding-top:30px}}@media(max-width:360px){.shell{width:calc(100% - 24px)}.payment-card{padding:14px}.intro p{font-size:14px}.result-amount{font-size:32px}dialog{padding:18px}.form-actions{flex-wrap:wrap}}@media(prefers-reduced-motion:no-preference){.result-card{transition:background .2s}button{transition:background .15s,box-shadow .15s}dialog[open]{animation:appear .18s ease-out}@keyframes appear{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}}