:root{font-family:system-ui,-apple-system,sans-serif;color:#17213c;background:#f3f5fb}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0}header{display:flex;justify-content:space-between;align-items:center;padding:22px 6vw;background:#fff;border-bottom:1px solid #e0e4ed}header>a{font-weight:800;font-size:22px;text-decoration:none}nav{display:flex;gap:18px}a{color:#5540c8}main{max-width:820px;margin:40px auto;padding:0 20px}h1{font-size:34px;margin-bottom:10px}.intro{color:#566078}form,#payment,.balance,#history article{background:#fff;border:1px solid #dce1ed;border-radius:18px;padding:26px;margin:22px 0}label{display:block;margin:18px 0;font-weight:600}input,select{display:block;width:100%;padding:13px;border:1px solid #bec7db;border-radius:10px;font:inherit;margin-top:8px}button{padding:12px 18px;border:0;border-radius:10px;background:#5f42d4;color:#fff;font:inherit;cursor:pointer}button:disabled{opacity:.5;cursor:wait}.secondary,.amounts button{background:#ece9fd;color:#3d2d8c}.amounts{display:flex;gap:10px;flex-wrap:wrap}.check{display:flex;align-items:center;gap:10px;font-weight:400}.check input{width:auto;margin:0}.balance{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.balance strong{font-size:28px;flex:1}dl dt{font-size:13px;color:#566078;margin-top:20px}dl dd{margin:5px 0;overflow-wrap:anywhere;font-weight:600}code{font-size:15px;display:block;margin-bottom:12px}#status{padding:14px 18px;border-radius:12px;background:#e9edff;line-height:1.5}p{line-height:1.6}footer{padding:30px 20px;max-width:820px;margin:auto;font-size:14px;color:#566078}#history article{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px}#history button{flex-shrink:0}@media(max-width:600px){h1{font-size:28px}header{padding:18px}nav{gap:10px;font-size:13px}main{margin-top:25px}form,#payment,.balance{padding:20px}.amounts button{flex:1}}

#payment-qr{display:block;background:#fff;width:256px;max-width:100%;height:auto;border:1px solid #e0e4ed;border-radius:12px}#qr-panel p,#tail-note{font-size:14px;font-weight:400;line-height:1.6;color:#566078}#payment-amount{font-family:ui-monospace,monospace;font-size:24px;overflow-wrap:anywhere}#payment-usd{font-size:24px;color:#3d2d8c}