:root{--bg:#f5f7fb;--card:#fff;--text:#172033;--muted:#687386;--line:#e4e8f0;--primary:#5b5bd6;--primary2:#4949b8;--green:#12805c;--red:#c33d4b;--amber:#a85d00;--shadow:0 14px 45px rgba(30,41,59,.08)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}header{height:68px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1180px)/2));position:sticky;top:0;z-index:5}.brand{font-size:20px;font-weight:750;color:var(--text);display:flex;align-items:center;gap:10px}.brand-mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,#6d6de8,#35b998);display:inline-grid;place-items:center;color:#fff;font-size:14px}.nav{display:flex;align-items:center;gap:18px}.container{width:min(1180px,calc(100% - 32px));margin:34px auto 60px}.narrow{width:min(470px,calc(100% - 32px));margin:60px auto}.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;padding:70px 0}.hero h1{font-size:46px;line-height:1.16;margin:0 0 22px;letter-spacing:-1px}.hero p{font-size:18px;color:var(--muted);max-width:640px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:26px;margin-bottom:22px}.card h2,.card h3{margin-top:0}.card-flat{box-shadow:none}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.stat{font-size:30px;font-weight:750}.muted{color:var(--muted)}.small{font-size:13px}.label{display:block;font-weight:600;margin:16px 0 6px}input,select,textarea{width:100%;border:1px solid #ccd3df;border-radius:10px;background:#fff;color:var(--text);padding:11px 13px;font:inherit;outline:none}input:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(91,91,214,.12)}button,.button{border:0;border-radius:10px;background:var(--primary);color:#fff;padding:11px 18px;font:inherit;font-weight:650;cursor:pointer;display:inline-block;text-align:center}button:hover,.button:hover{background:var(--primary2);text-decoration:none}button:disabled{opacity:.55;cursor:not-allowed}.secondary{background:#edf0f7;color:#35415a}.secondary:hover{background:#e1e6f0}.danger{background:#fff0f1;color:var(--red)}.button-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:20px}.quick{display:flex;gap:8px;flex-wrap:wrap;margin-top:9px}.quick button{padding:5px 12px}.alert{padding:12px 14px;border-radius:10px;background:#eef2ff;color:#3c4780;margin:14px 0;word-break:break-word}.alert.error{background:#fff0f1;color:var(--red)}.alert.success{background:#eaf8f2;color:var(--green)}.alert.warning{background:#fff6e7;color:var(--amber)}[hidden]{display:none!important}.payment-layout{display:grid;grid-template-columns:340px 1fr;gap:24px}.qr{width:260px;height:260px;max-width:100%;display:block;margin:10px auto;background:#fff}.address{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;word-break:break-all;background:#f3f5f9;padding:12px;border-radius:10px}.amount{font-size:36px;font-weight:780;letter-spacing:-.5px}.countdown{font-variant-numeric:tabular-nums;color:var(--amber);font-weight:700}.status{display:inline-flex;align-items:center;border-radius:99px;padding:4px 11px;font-size:13px;font-weight:700;background:#edf0f7;color:#536078}.status.CONFIRMED{background:#e5f7ef;color:var(--green)}.status.PENDING,.status.CONFIRMING{background:#fff3da;color:var(--amber)}.status.EXPIRED,.status.AMOUNT_MISMATCH,.status.REVIEW_REQUIRED{background:#ffebee;color:var(--red)}.status.LATE_PAYMENT,.status.PARTIALLY_PAID{background:#fff0e5;color:#a64b16}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:11px 10px;vertical-align:top}th{color:var(--muted);font-weight:650;white-space:nowrap}td{word-break:break-word}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.detail{display:grid;grid-template-columns:150px 1fr;gap:9px 16px;margin:18px 0}.detail dt{color:var(--muted)}.detail dd{margin:0;word-break:break-all}pre{white-space:pre-wrap;word-break:break-all;background:#f4f6fa;padding:14px;border-radius:10px;max-height:420px;overflow:auto}.tabs{display:flex;gap:6px;overflow-x:auto;margin-bottom:20px}.tabs button{white-space:nowrap;background:#e9edf4;color:#4b576c}.tabs button.active{background:var(--primary);color:#fff}.footer{color:var(--muted);text-align:center;padding:30px}.feature{padding:22px;border:1px solid var(--line);border-radius:14px;background:#fff}.feature h3{margin:0 0 8px}.success-icon{font-size:52px;color:var(--green)}.no-top-margin{margin-top:0}.centered{text-align:center}@media(max-width:800px){.hero{grid-template-columns:1fr;padding:38px 0}.hero h1{font-size:35px}.payment-layout,.grid{grid-template-columns:1fr}.grid-3{grid-template-columns:1fr}.container{margin-top:20px}.card{padding:20px}.detail{grid-template-columns:1fr;gap:2px}.detail dd{margin-bottom:10px}header{padding:0 16px}.nav{gap:10px}.hide-mobile{display:none}}