:root{--bg:#fff;--bg-soft:#f4f6fb;--card:#fff;--text:#0b1020;--muted:#586179;--line:#e3e7f0;--line-strong:#cfd6e4;--brand:#1f4fd1;--brand-2:#1f5eff;--brand-soft:#9fc0ff;--brand-wash:#eaf0ff;--mint:#12b886;--mint-wash:#e3f8f0;--amber:#f59f00;--violet:#7c5cff;--ink:#060a19;--ink-2:#0c1330;--ink-text:#e9edf8;--ink-muted:#9aa5c4;--code-bg:#0a1024;--code-text:#dfe6f8;--shadow-sm:0 1px 2px #0b10200f, 0 1px 1px #0b10200a;--shadow:0 10px 30px -12px #101e5038, 0 2px 6px #101e500f;--shadow-lg:0 30px 80px -30px #101e5a73, 0 8px 24px -8px #101e5a2e;--radius:14px;--radius-lg:22px;--max:1180px;--gutter:24px;--header-h:64px;--font:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--mono:ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#070b1a;--bg-soft:#0b1124;--card:#0f1630;--text:#e8ecf7;--muted:#9aa4bf;--line:#1c2544;--line-strong:#2a3558;--brand:#5b8cff;--brand-2:#7aa2ff;--brand-soft:#9fc0ff;--brand-wash:#121d42;--mint:#3ddca8;--mint-wash:#0d2a24;--code-bg:#050915;--shadow-sm:0 1px 2px #0006;--shadow:0 10px 30px -12px #0009;--shadow-lg:0 30px 80px -30px #000c;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root:lang(zh-Hans){--font:system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif}:root{--accent:var(--brand-2);--on-accent:#fff;--ok:#0b7a55;--bad:#c0352b;--warn-bg:#fff4d6;--warn-text:#6b4b00;--focus:var(--brand-2)}@media (prefers-color-scheme:dark){:root{--on-accent:#060a19;--ok:var(--mint);--bad:#ff8a80;--warn-bg:#3a2e0a;--warn-text:#ffd97a}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{font-family:var(--font);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;margin:0;font-size:16px;line-height:1.55}img,svg{max-width:100%}a{color:var(--brand)}:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:6px}h1,h2,h3,h4{letter-spacing:-.02em;line-height:1.2}code,kbd,pre{font-family:var(--mono);font-size:.92em}.btn-base,.copy-field button,.rate-expired button,.primary,.danger,.secondary,.tab,.stats-preset,.dash button[type=submit],.assets button,.sandbox-buttons button{font:inherit;cursor:pointer;border-radius:999px;font-size:.95rem;font-weight:600;transition:transform .15s,box-shadow .2s,background .2s,color .2s,border-color .2s}.copy-field button,.rate-expired button,.primary,.dash button[type=submit]{background:var(--accent);color:var(--on-accent);border:1px solid var(--accent);white-space:nowrap;box-shadow:0 6px 18px -8px color-mix(in srgb, var(--accent) 70%, transparent);padding:9px 18px}.copy-field button:hover,.rate-expired button:hover,.primary:hover:not(:disabled),.dash button[type=submit]:hover:not(:disabled){background:var(--brand);border-color:var(--brand);transform:translateY(-1px)}.danger{background:var(--bad);color:#fff;border:1px solid var(--bad);padding:9px 18px}.secondary{color:var(--text);border:1px solid var(--line-strong);background:0 0;padding:9px 18px}.secondary:hover:not(:disabled){border-color:var(--text)}.tab{color:var(--text);border:1px solid var(--line);background:0 0;padding:7px 16px}.tab:hover{border-color:var(--line-strong)}.tab.active{border-color:var(--accent);color:var(--brand);background:var(--brand-wash)}button:disabled{opacity:.55;cursor:default;transform:none}.link{color:var(--brand);cursor:pointer;text-underline-offset:3px;font:inherit;background:0 0;border:0;padding:0;text-decoration:underline}input,select,textarea{font:inherit;color:var(--text);background:var(--card);border:1px solid var(--line-strong);border-radius:10px;padding:9px 12px}input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--focus);outline-offset:1px;border-color:var(--focus)}input::placeholder,textarea::placeholder{color:var(--muted)}label{color:var(--text)}.brand{letter-spacing:-.02em;color:var(--text);align-items:center;gap:10px;font-size:1.12rem;font-weight:700;display:inline-flex}.brand-logo{flex:none;width:30px;height:30px;display:block}.checkout{max-width:460px;margin:0 auto;padding:20px 16px 48px}.checkout-brand{border-bottom:1px solid var(--line);align-items:center;gap:12px;margin:0 0 20px;padding-bottom:14px;display:flex}.checkout h1{letter-spacing:-.03em;margin:0 0 16px;font-size:1.5rem}.checkout h2{margin:22px 0 10px;font-size:1rem}.summary{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);margin:0;padding:14px 18px}.summary div{justify-content:space-between;gap:12px;padding:4px 0;display:flex}.summary dt{color:var(--muted)}.summary dd{font-variant-numeric:tabular-nums;text-align:right;overflow-wrap:anywhere;margin:0;font-weight:600}.assets{gap:8px;margin:0;padding:0;list-style:none;display:grid}.assets button{text-align:left;border-radius:var(--radius);border:1px solid var(--line);background:var(--card);width:100%;color:var(--text);box-shadow:var(--shadow-sm);align-items:center;gap:10px;padding:12px 16px;font-size:1rem;font-weight:500;display:flex}.assets button:hover,.assets button:focus-visible{border-color:var(--accent);transform:translateY(-1px)}.assets button[aria-current=true]{border-color:var(--accent);background:var(--brand-wash)}img.coin{border-radius:50%;flex:none;width:28px;height:28px;display:inline-block}.net{color:var(--muted);text-transform:capitalize;margin-left:6px}.pay{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);justify-items:center;gap:14px;margin-top:16px;padding:18px;display:grid}.network-warning{border-radius:var(--radius);background:var(--warn-bg);width:100%;color:var(--warn-text);margin:0;padding:12px 14px;font-size:1.02rem;font-weight:600}.qr{aspect-ratio:1;border:1px solid var(--line);background:#fff;border-radius:12px;width:240px;max-width:100%;height:auto;padding:8px}.copy-field{width:100%}.copy-field .label{color:var(--muted);margin-bottom:4px;font-size:.85rem;display:block}.copy-field .row{align-items:center;gap:8px;display:flex}.copy-field .value{background:var(--bg-soft);border:1px solid var(--line);overflow-wrap:anywhere;min-width:0;font-family:var(--mono);-webkit-user-select:all;user-select:all;border-radius:10px;flex:1;padding:10px 12px;font-size:.9rem}.rate-timer{color:var(--muted);font-variant-numeric:tabular-nums;margin:0}.wallet-link{color:var(--brand);font-weight:600}.status{border-radius:var(--radius);border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow-sm);margin-top:16px;padding:14px 18px}.status p{margin:0}.status-paid,.status-overpaid{border-color:var(--ok);color:var(--ok);background:var(--mint-wash);font-weight:600}.status-expired,.status-manual_review,.status-late_payment{border-color:var(--bad)}.error{color:var(--bad)}.sandbox{border:2px dashed var(--warn-text);border-radius:var(--radius);margin-top:20px;padding:12px 14px}.sandbox h2{margin:0 0 4px;font-size:1rem}.sandbox-buttons{flex-wrap:wrap;gap:8px;margin-top:8px;display:flex}.sandbox-buttons button{color:inherit;background:0 0;border:1px solid;padding:6px 14px}.return-link{margin-top:16px;display:inline-block}.muted{color:var(--muted)}.checkout-footer{border-top:1px solid var(--line);color:var(--muted);text-align:center;margin-top:32px;padding-top:12px;font-size:.85rem}@media (width<=420px){.copy-field .row{flex-wrap:wrap}.copy-field .row button{width:100%}}.lang-switch{width:auto;max-width:100%;margin-left:auto}.header-actions{flex-wrap:wrap;align-items:center;gap:8px;margin-left:auto;display:flex}