:root{color-scheme:light;--ink:#171719;--muted:#74747a;--line:#dedee2;--paper:#fff;--page:#f5f5f6}*{box-sizing:border-box}body{margin:0;background:var(--page);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.6}header{height:72px;max-width:1080px;margin:auto;padding:0 25px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}header a{font-weight:700;text-decoration:none}header span{font-size:13px;color:var(--muted)}main{max-width:1030px;margin:52px auto;padding:0 24px}.checkout{display:grid;grid-template-columns:1fr 1fr;background:var(--paper);border:1px solid var(--line);border-radius:20px;overflow:hidden}.summary,form,.result{padding:44px}.summary{background:#18181b;color:#fff}.summary>p,.result>p{font-size:11px;letter-spacing:.16em;color:#999;margin:0}.summary h1,.result h1{font-size:34px;line-height:1.25;margin:12px 0 30px}.summary dl,.result dl{margin:0}.summary dl div,.result dl div{display:flex;justify-content:space-between;gap:18px;padding:12px 0;border-bottom:1px solid #ffffff22}.result dl div{border-color:var(--line)}dt{color:#aaa;font-size:13px}dd{margin:0;font-weight:620;text-align:right}.total{display:flex;justify-content:space-between;align-items:end;margin-top:55px}.total span{color:#aaa}.total strong{font-size:34px}form h2{font-size:24px;margin:0 0 25px}form>label{display:block;font-weight:650}input[type=email]{display:block;width:100%;margin-top:8px;border:1px solid #cfcfd4;border-radius:10px;padding:13px;font:inherit}small,.terms{display:block;color:var(--muted);font-size:11px;margin-top:7px}fieldset{border:0;padding:0;margin:25px 0}legend{font-weight:650;margin-bottom:10px}.choice{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:10px;padding:12px;margin-top:8px}button,.action{width:100%;border:0;border-radius:11px;padding:14px 20px;background:#171719;color:#fff;font:inherit;font-weight:700;text-align:center;text-decoration:none;display:block}button:disabled{background:#aaa}.notice,.result{max-width:720px;margin:auto;background:#fff;border:1px solid var(--line);border-radius:18px;padding:35px}.voucher{margin-top:28px;border:2px solid #171719;border-radius:13px;padding:22px}.voucher span{display:block;color:var(--muted);font-size:12px}.voucher strong{display:block;margin:8px 0;font:700 20px ui-monospace,SFMono-Regular,Consolas,monospace;word-break:break-all}.voucher p,.waiting{color:var(--muted)}.action{margin-top:16px}@media(max-width:720px){main{margin:25px auto}.checkout{grid-template-columns:1fr}.summary,form,.result{padding:28px}.summary h1,.result h1{font-size:28px}.total{margin-top:32px}}
.pending{margin:0 0 22px;padding:16px;border:1px solid #d7d7dc;border-radius:12px;background:#f7f7f8}.pending strong,.pending span{display:block}.pending span{margin:2px 0 12px;color:var(--muted);font:12px ui-monospace,SFMono-Regular,Consolas,monospace;word-break:break-all}.pending button{background:#fff;color:#171719;border:1px solid #171719}.or{margin:0 0 22px;text-align:center;color:var(--muted);font-size:12px}
.pay-modal{position:fixed;inset:0;z-index:20;display:grid;place-items:center;padding:22px;background:#0009}.pay-panel{width:min(470px,100%);overflow:hidden;border-radius:18px;background:#fff;box-shadow:0 22px 70px #0005}.pay-head{display:flex;align-items:flex-start;justify-content:space-between;padding:20px 23px 12px}.pay-head span{font-size:11px;letter-spacing:.12em;color:var(--muted)}.pay-head h2{margin:2px 0 0;font-size:23px}.pay-head>a{font-size:32px;line-height:1;color:#555;text-decoration:none}.pay-panel iframe{display:block;width:100%;height:480px;border:0;background:#fff}.pay-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:14px 20px 20px}.pay-actions a{padding:11px;border:1px solid var(--line);border-radius:9px;color:var(--ink);font-size:13px;text-align:center;text-decoration:none}.pay-actions a:last-child{background:#171719;color:#fff}@media(max-width:540px){.pay-modal{padding:10px}.pay-panel iframe{height:430px}.pay-actions{grid-template-columns:1fr}}
textarea,select{display:block;width:100%;margin-top:8px;border:1px solid #cfcfd4;border-radius:10px;padding:13px;font:inherit;background:#fff;color:var(--ink)}textarea{resize:vertical;min-height:132px;font:13px/1.5 ui-monospace,SFMono-Regular,Consolas,monospace}.verify-step,.payment-step{margin-top:20px}.step-title{display:flex;gap:12px;align-items:flex-start;margin-bottom:18px}.step-title>span{display:grid;place-items:center;min-width:34px;height:34px;border:1px solid var(--line);border-radius:9px;color:var(--muted);font:12px ui-monospace,SFMono-Regular,Consolas,monospace}.step-title strong,.step-title small{display:block}.step-title small{margin-top:1px}.verify-step>label,.payment-step>label,.account-choice label{display:block;font-weight:650}.verify-step>button,.account-choice button{margin-top:14px}.check-message{min-height:24px;margin:12px 0 0;font-size:13px}.check-message.error{color:#a12828}.check-message.success{color:#18723c}.check-message.loading,.check-message.info{color:#555}.privacy{margin:14px 0 0;padding:12px;border-radius:9px;background:#f5f5f6;color:var(--muted);font-size:11px}.account-choice{margin-top:14px;padding:14px;border:1px solid var(--line);border-radius:11px}.verified-account{margin-top:15px;padding:14px;border:1px solid #a9d9bd;border-radius:11px;background:#f1faf5}.verified-account strong,.verified-account span{display:block}.verified-account span{margin-top:3px;color:#4c5c53;font-size:13px}.payment-step{padding-top:24px;border-top:1px solid var(--line)}[hidden]{display:none!important}

/* H5 baseline */
@media(max-width:480px){html,body{overflow-x:hidden}header{height:auto;min-height:64px;padding:12px 16px;gap:12px}header span{text-align:right;line-height:1.4}main{margin:18px auto;padding:0 12px}.checkout{border-radius:15px}.summary,form,.result{padding:24px 18px}.summary h1,.result h1{font-size:26px;margin-bottom:22px;overflow-wrap:anywhere}.summary dl div,.result dl div{align-items:flex-start}dt{flex:0 0 auto}dd{min-width:0;overflow-wrap:anywhere}.total{align-items:flex-start;gap:12px}.total strong{font-size:28px;text-align:right}input[type=email],textarea,select{font-size:16px}button,.action{min-height:48px}.notice,.result{padding:24px 18px;border-radius:14px}.pay-modal{align-items:flex-start;padding:10px;padding-top:max(10px,env(safe-area-inset-top));padding-bottom:max(10px,env(safe-area-inset-bottom));overflow:auto}.pay-panel{display:flex;flex-direction:column;max-height:calc(100dvh - 20px);border-radius:14px}.pay-head{padding:16px 17px 10px}.pay-head h2{font-size:20px}.pay-panel iframe{height:auto;min-height:320px;flex:1 1 430px}.pay-actions{padding:10px 14px 14px}.step-title{gap:10px}.verified-account,.account-choice{padding:12px}}