:root{color-scheme:light;--bg:#f2f6f6;--paper:#fff;--ink:#17383e;--muted:#526c74;--edge:#d9e5e7;--soft:#eef6f5;--accent:#126c69;--error:#9f2929}
*{box-sizing:border-box}body{margin:0;padding:36px 16px;background:var(--bg);color:var(--ink);font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}main{max-width:560px;margin:0 auto;background:var(--paper);padding:28px;border:1px solid var(--edge);border-radius:20px}h1,h2,p{margin:0}h1{font-size:28px;font-weight:600;margin:6px 0}h2,legend{font-size:17px;font-weight:500}.eyebrow{font-size:12px;letter-spacing:.08em;color:var(--accent)}header{margin-bottom:24px}.muted{color:var(--muted);font-size:14px}.fine,footer{font-size:12px;color:var(--muted)}label{font-size:14px;display:block}input:not([type=radio]){width:100%;min-width:0;min-height:46px;font:16px system-ui;color:var(--ink);background:var(--paper);border:1px solid var(--edge);border-radius:9px;padding:11px 10px;margin:6px 0 17px}button{font:16px system-ui;min-height:46px;padding:12px 14px;border:0;border-radius:9px;background:var(--accent);color:#fff;cursor:pointer;width:100%;margin:4px 0 12px}button:disabled{opacity:.65;cursor:wait}button.secondary{color:var(--muted);background:transparent;text-align:left;padding-left:0;margin-top:20px}:focus-visible{outline:3px solid #729ff1;outline-offset:3px}fieldset{border:0;padding:0;margin:0}legend{padding:0;margin-bottom:10px}#cards{display:grid;gap:10px}.card-option{display:flex;align-items:center;gap:10px;border:1px solid var(--edge);border-radius:10px;padding:13px;cursor:pointer}.card-option:has(input:checked){border-color:var(--accent);background:var(--soft)}.card-option input{accent-color:var(--accent);margin:0;flex-shrink:0}.card-option span{min-width:0;overflow-wrap:anywhere}.card-name{display:block;font-weight:500}.card-number{display:block;font-size:13px;font-variant-numeric:tabular-nums;color:var(--muted)}.dates{display:grid;grid-template-columns:1fr 1fr;gap:12px}.date-heading{margin:22px 0 8px}.order-summary,.usage-summary{padding:16px;background:var(--soft);border-radius:12px;margin-bottom:20px}.total{font-size:34px;font-weight:600;font-variant-numeric:tabular-nums;margin:4px 0}.usage-summary{margin-top:10px}table{border-collapse:collapse;width:100%;margin:16px 0}caption{text-align:left;font-size:15px;margin-bottom:6px}td,th{border-bottom:1px solid var(--edge);text-align:left;padding:10px 0;font-weight:400;font-size:14px}td:last-child,th:last-child{text-align:right;font-variant-numeric:tabular-nums}#status{margin-top:10px}#error{color:var(--error);font-size:14px;margin-top:10px}footer{border-top:1px solid var(--edge);padding-top:16px;margin-top:22px}[hidden]{display:none!important}@media(max-width:360px){main{padding:20px 16px}.dates{grid-template-columns:1fr}body{padding:16px 8px}}
/* Keep the floating contact action clear of the device's safe area. */
body{padding-bottom:calc(100px + env(safe-area-inset-bottom,0px))}
footer a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.line-support{position:fixed;right:calc(20px + env(safe-area-inset-right,0px));bottom:calc(20px + env(safe-area-inset-bottom,0px));z-index:100;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:10px 18px 10px 12px;border-radius:999px;background:#087f3d;color:#fff;text-decoration:none;font-size:15px;font-weight:600;box-shadow:0 4px 16px #123b2a26}
.line-support:hover{background:#066c33}.line-support:active{transform:translateY(1px)}
.line-mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:29px;background:#fff;color:#087f3d;border-radius:10px;font-size:11px;letter-spacing:.02em;font-weight:700}
@media(max-width:480px){.line-support{right:calc(12px + env(safe-area-inset-right,0px));bottom:calc(12px + env(safe-area-inset-bottom,0px));min-height:48px;padding:9px 14px 9px 10px;gap:8px}body{padding-bottom:calc(90px + env(safe-area-inset-bottom,0px))}}