:root{font-family:system-ui,-apple-system,"Noto Sans Bengali",sans-serif;color:#152941;background:#f4f7fb;font-size:14px}
*{box-sizing:border-box}body{margin:0;min-height:100vh}a{color:#1168c2}h1{font-size:24px;margin:0 0 12px}h2{font-size:18px;margin:0 0 15px}p{line-height:1.7}label{display:block;font-weight:650;margin:14px 0 6px}input,select,textarea{width:100%;padding:11px 12px;border:1px solid #ccd7e6;border-radius:9px;background:#fff;color:#152941;font:inherit}textarea{min-height:84px;resize:vertical}input:focus,textarea:focus{outline:2px solid #9ac6fc;border-color:#3a8ad9}input[type=checkbox]{width:auto}button{cursor:pointer;font:inherit}.btn{display:inline-block;background:#1167c5;color:#fff;border:0;border-radius:10px;padding:12px 17px;font-weight:700;text-decoration:none;white-space:normal}.btn.secondary{background:#eff5ff;color:#0b559f;border:1px solid #d5e7ff}.btn.tiny-button{padding:7px 10px;font-size:12px}.btn.danger{background:#a51c30}.btn:hover{filter:brightness(.95)}.auth-card{max-width:470px;background:#fff;border:1px solid #e2e9f3;box-shadow:0 22px 70px #21395310;margin:9vh auto 24px;padding:28px;border-radius:18px}.auth-card .btn{width:100%;margin-top:18px;text-align:center}.tiny{font-size:12px;color:#728197;line-height:1.6}.muted{color:#77879b}.center{text-align:center}.emoji{font-size:66px;margin:10px}.eyebrow{font-size:12px;letter-spacing:1.7px;color:#4d799e;font-weight:800;margin-bottom:6px}.amount-box{text-align:center;background:#f2f8ff;padding:22px;border-radius:14px;font-size:34px;font-weight:800;color:#0068bb}.error{color:#9b2226;background:#fff1f1;border:1px solid #ffd9d9;padding:12px;border-radius:9px}.success{color:#106641;background:#eaf8ef;border:1px solid #c2ebd3;padding:12px;border-radius:9px}.checkout-shell{max-width:620px;margin:20px auto 40px;padding:0 14px}.checkout-shell header{text-align:center;padding:16px}.checkout-shell header h1{margin:5px 0}.checkout-shell header p{font-size:18px;font-weight:700;margin:0}.notice{background:#fff;border:1px solid #dce8f4;padding:13px 16px;border-radius:12px;line-height:1.8;margin:10px 0}.frame-wrap{height:min(69vh,790px);min-height:480px;background:#fff;border:1px solid #d9e4ef;border-radius:14px;overflow:hidden;box-shadow:0 20px 60px #1b456013}.frame-wrap iframe{width:100%;height:100%;border:0}.frame-note{text-align:center;font-size:12px;color:#6a7d8f}.status-line{text-align:center;background:#eaf5ff;border-radius:12px;padding:13px;margin-top:12px;color:#235d8f;font-weight:650}.admin-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:20px 0}.admin-wrap{max-width:1060px;margin:0 auto;padding:0 20px 45px}.tabbar{display:flex;gap:7px;overflow-x:auto;padding:5px 0 14px}.tabbar a{padding:10px 14px;white-space:nowrap;text-decoration:none;background:#e9f1fa;color:#1a4c7c;border-radius:9px;font-weight:700}.tabbar a.active{background:#1167c5;color:#fff}.panel{background:#fff;border:1px solid #e0e7f0;border-radius:14px;padding:24px;margin-bottom:16px;box-shadow:0 10px 25px #253f5c08}.panel h2{margin-bottom:6px}.panel p{color:#6f7c8c}.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-row{display:flex;align-items:center;gap:9px;margin:13px 0}.form-row label{margin:0}.stack{display:flex;flex-direction:column;gap:10px}.code-row{display:flex;align-items:center;gap:6px;margin:8px 0}.code-row input{font:12px ui-monospace,monospace;min-width:0}.code-row .btn{flex:none}.site-item{padding:14px;border:1px solid #e5eaf1;border-radius:10px;margin:12px 0}.site-top{display:flex;justify-content:space-between;align-items:center;gap:8px}.site-top b{word-break:break-all}.pill{display:inline-block;background:#e2f6e9;color:#0b7548;padding:4px 8px;border-radius:20px;font-size:11px}.pill.off{background:#f9e5e7;color:#9b2226}.footer-mini{text-align:center;color:#8491a1;font-size:11px;padding:25px}@media(max-width:700px){.row2{grid-template-columns:1fr}.panel{padding:15px}.auth-card{margin:28px 14px}.admin-wrap{padding:0 12px}.code-row{flex-wrap:wrap}.code-row input{flex:1;min-width:130px}}
/* Minimal root amount entry and arithmetic verification: patch v1.1 */
.home-payment .muted{margin:6px 0 20px}
.amount-entry{display:flex;align-items:center;border:1px solid #ccd7e6;border-radius:12px;background:#fff;overflow:hidden}
.amount-entry:focus-within{outline:2px solid #9ac6fc;border-color:#3a8ad9}
.amount-entry span{font-size:26px;font-weight:800;color:#1167c5;padding:0 0 0 14px}
.amount-entry input{border:0;outline:none;min-width:0;font-weight:700;font-size:24px;padding:15px 12px}
.amount-entry input:focus{outline:none;border:0}
.math-challenge{display:inline-block;background:#eaf5ff;padding:7px 14px;border-radius:10px;font-size:18px;font-weight:850;letter-spacing:.6px;color:#164d7f}

/* v1.7: a single editable, visibly bordered notice, then a tall gateway iframe. */
.checkout-shell{max-width:920px;margin:0 auto;padding:10px 14px 28px}
.payment-notice{background:#edf5ff;border:1px solid #c5dbef;border-radius:12px;padding:14px 17px;margin:0 0 10px;min-height:49px;box-shadow:0 4px 16px #1b456010}
.payment-notice-text{margin:0;line-height:1.7;color:#25436e;overflow-wrap:anywhere;font-weight:600}
.checkout-shell .frame-wrap{height:1650px;min-height:1650px;max-height:none;border-radius:12px}
.checkout-shell .status-line{margin-top:11px}
@media(max-width:700px){.checkout-shell{padding:8px 8px 24px}.payment-notice{padding:12px 14px;margin-bottom:8px}.checkout-shell .frame-wrap{height:1900px;min-height:1900px;border-radius:10px}}

/* v1.5: concise guided connection setup, no additional scripts or assets. */
.connect-steps{list-style:none;counter-reset:step;padding:0;display:grid;gap:10px;margin:15px 0}
.connect-steps li{counter-increment:step;position:relative;background:#f5f9fe;border:1px solid #e2eaf4;border-radius:11px;padding:11px 12px 11px 50px;min-height:50px}
.connect-steps li:before{content:counter(step);position:absolute;left:12px;top:11px;background:#1167c5;color:#fff;border-radius:10px;width:28px;height:28px;display:grid;place-items:center;font-weight:800}
.connect-steps b,.connect-steps span{display:block}.connect-steps span{font-size:13px;color:#62788d;line-height:1.6;margin-top:3px;overflow-wrap:anywhere}
.connect-steps code{font-size:12px;overflow-wrap:anywhere}.connect-form .btn{margin-top:18px}


/* v1.6: compact, mobile-friendly paid and pending order lists. */
.order-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:14px 0 15px}
.order-stats>div{border:1px solid #e2eaf4;border-radius:12px;background:#f5f9fe;padding:14px}
.order-stats span{display:block;color:#57738f;font-size:12px;font-weight:700}
.order-stats strong{display:block;color:#164c7a;font-size:26px;margin-top:4px}
.order-section-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.order-section-head h2{margin:0}.order-section-head p{margin:4px 0 0;font-size:12px}
.order-list{display:grid;gap:11px}.order-card{border:1px solid #e2eaf3;border-radius:12px;padding:14px;background:#fff}
.order-primary{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;flex-wrap:wrap}
.order-amount{font-size:21px;font-weight:800;color:#153e64;margin-bottom:7px}
.order-meta{display:flex;flex-direction:column;gap:4px;max-width:70%;font-size:12px;color:#667f94;overflow-wrap:anywhere}
.order-meta b{font-size:13px;color:#263e55}
.order-details{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px 16px;border-top:1px solid #edf1f6;padding-top:10px;margin-top:12px}
.order-details div{min-width:0;display:flex;flex-direction:column;gap:3px}
.order-details span{color:#687e92;font-size:11px;font-weight:700}
.order-details code,.order-details strong{font-size:12px;color:#1e425c;overflow-wrap:anywhere;word-break:break-word}
.order-action{display:flex;justify-content:flex-end;margin-top:10px}
.order-pagination{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;padding-top:16px}
.order-pagination span{font-size:12px;color:#668096}
.order-empty{padding:18px;background:#f5f9fc;border:1px dashed #d7e3ee;border-radius:10px}
@media(max-width:520px){.order-stats{gap:8px}.order-stats>div{padding:10px}.order-stats strong{font-size:22px}.order-card{padding:12px}.order-meta{max-width:100%}.order-details{grid-template-columns:1fr}}

/* Simplified manual payment and root amount forms. */
.payment-heading-simple{text-align:center;font-size:15px;letter-spacing:1.2px;margin-bottom:20px;color:#245b87}
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.manual-payment .amount-box{margin:0 0 14px}