:root{color:#152033;background:#f5f8fc;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;--brand: #2764d9;--brand-dark: #1d4fb2;--muted: #607089;--line: #dce4ef;--soft: #f3f7fc}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;min-width:320px;min-height:100vh;min-height:100dvh;display:grid;place-items:center;padding:20px;background:#f5f8fc;overscroll-behavior-y:none}.card{width:min(100%,460px);padding:30px;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:0 18px 50px #1f36581a}h1{margin:0 0 8px;font-size:30px;line-height:1.12;letter-spacing:-.6px}.intro{margin:0 0 22px;color:var(--muted);font-size:14px;line-height:1.5}.amount{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px;padding:16px;border-radius:14px;background:var(--soft);font-size:14px}.amount strong{font-size:18px;white-space:nowrap}label{display:block;margin:0 0 9px;font-size:14px;font-weight:650}input{width:100%;min-height:54px;padding:15px 16px;border:1px solid var(--line);border-radius:14px;outline:none;background:#fff;font:500 18px/1.2 inherit;appearance:none;transition:border-color .16s,box-shadow .16s}input:focus{border-color:var(--brand);box-shadow:0 0 0 3px #2764d91f}button{width:100%;min-height:54px;margin-top:16px;padding:15px 17px;border:0;border-radius:14px;background:var(--brand);color:#fff;font:700 16px/1.2 inherit;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent}button:hover{background:var(--brand-dark)}button:disabled{cursor:wait;opacity:.65}.form-error{min-height:22px;margin:12px 2px 0;color:#c92f2f;font-size:14px}.form-error:empty{min-height:0;margin-top:0}.note,.notice{color:var(--muted);font-size:12px;line-height:1.5}.note{margin:18px 0 0}.notice{margin:16px 0 0;padding-top:16px;border-top:1px solid var(--line)}.refund-warning{width:100%;margin:14px 0 0;padding:14px 16px;border-radius:14px;background:#fff6e8;color:#5d4520;font-size:12px;font-weight:400;line-height:1.45;text-align:center;text-align-last:center}.error-card p{margin-bottom:0;color:var(--muted);line-height:1.5}.loading{min-height:100vh;min-height:100dvh;display:grid;place-items:center;padding:24px}.loading.overlay{position:fixed;inset:0;z-index:10;background:#11111157;backdrop-filter:blur(3px)}.loading-card{width:min(100%,320px);padding:30px 24px;border-radius:24px;background:#fff;text-align:center;box-shadow:0 18px 60px #00000029}.spinner{width:48px;height:48px;margin:0 auto 18px;border:5px solid #e6edf7;border-top-color:var(--brand);border-radius:50%;animation:spin .8s linear infinite}.loading-title{margin:0;font-size:19px;font-weight:700}.loading-text{margin:8px 0 0;color:var(--muted);font-size:14px}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.spinner{animation-duration:1.6s}}@media(max-width:480px){body{padding:0;place-items:start stretch;background:#fff}.card{width:100%;min-height:100vh;min-height:100dvh;padding:max(24px,env(safe-area-inset-top)) max(18px,env(safe-area-inset-right)) max(24px,env(safe-area-inset-bottom)) max(18px,env(safe-area-inset-left));border:0;border-radius:0;box-shadow:none}h1{font-size:clamp(26px,8vw,30px)}input{font-size:16px}.amount{align-items:flex-start}}