body{margin:0;font:16px/1.5 system-ui,sans-serif;background:#f6f7f9;color:#1a1d21}
header{display:flex;justify-content:space-between;padding:12px 16px;background:#fff;border-bottom:1px solid #dde1e6}
header a{color:inherit;text-decoration:none;font-weight:600;margin-left:12px}header a:first-child{margin:0}
main{max-width:760px;margin:0 auto;padding:16px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.card{background:#fff;border:1px solid #dde1e6;border-radius:8px;padding:16px;display:flex;flex-direction:column;gap:8px}
.card h2{margin:0}.price{font-size:1.5rem;font-weight:700;margin:0}
label{display:flex;flex-direction:column;gap:4px;font-size:.9rem}
input,select{padding:8px;font-size:1rem;border:1px solid #b8bfc7;border-radius:6px;font-family:inherit}
button{margin-top:auto;padding:10px;font-size:1rem;border:0;border-radius:6px;background:#0a5cff;color:#fff;cursor:pointer}
.warn{background:#fff4d6;padding:8px 12px;border-radius:6px}.error{background:#ffe0e0;padding:8px 12px;border-radius:6px}
fieldset{border:1px solid #dde1e6;border-radius:6px;display:flex;flex-direction:column;gap:8px;padding:12px}
legend{font-size:.85rem;font-weight:600;padding:0 4px}
main p a.active,nav a.active{text-decoration:underline}
table{width:100%;border-collapse:collapse;background:#fff}th,td{text-align:left;padding:8px;border-bottom:1px solid #eceff2}
.s-paid{color:#0a7a2f;font-weight:600}.s-failed,.s-cancelled{color:#b3261e;font-weight:600}
header{position:relative;align-items:center}
.menu summary{list-style:none;cursor:pointer;font-size:1.5rem;line-height:1;padding:4px 8px;user-select:none}
.menu summary::-webkit-details-marker{display:none}
.menu nav{position:absolute;right:16px;top:100%;z-index:10;display:flex;flex-direction:column;min-width:220px;background:#fff;border:1px solid #dde1e6;border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.12);padding:4px 0}
.menu nav a{margin:0;padding:10px 16px}.menu nav a:hover{background:#f0f3f6}
button.copy{margin:0;padding:2px 6px;background:none;color:inherit;border:1px dashed #b8bfc7;border-radius:4px;text-align:left;word-break:break-all;font:inherit}
button.copy:hover{background:#f0f3f6}
button.copy{position:relative;transition:background-color .2s,border-color .2s}
button.copy.copied{background:#dff5e6;border:1px solid #0a7a2f;color:#0a7a2f}
button.copy.copied::after{content:"  ✓ copied";font-weight:600;font-size:.8rem}