.rpc-calculator{--rpc-line:#dbe1e8;--rpc-muted:#586575;--rpc-soft:#f4f7fa;--rpc-blue:#2463d5;max-width:790px;margin:1.5rem auto;padding:clamp(16px,3vw,30px);border:1px solid var(--rpc-line);border-radius:16px;color:#172333;background:#fff;box-sizing:border-box;font:inherit}
.rpc-calculator *{box-sizing:border-box}.rpc-calculator [hidden]{display:none!important}.rpc-header h2{font-size:clamp(22px,3vw,29px);line-height:1.25;margin:0 0 6px}.rpc-header p{margin:0;color:var(--rpc-muted)}.rpc-fields{display:grid;gap:18px;margin-top:24px}.rpc-field{display:grid;gap:7px}.rpc-field>span,.rpc-plan-field legend{font-size:14px;font-weight:650;margin-bottom:3px}.rpc-calculator input[type=number],.rpc-calculator select{width:100%;min-height:46px;border:1px solid #bfcbd8;border-radius:9px;background:#fff;color:#172333;padding:10px 12px;font:inherit}.rpc-calculator select{appearance:auto}.rpc-plan-field{padding:0;border:0;margin:0;min-width:0}.rpc-plan-options{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:5px;margin-top:8px}.rpc-plan-options label{position:relative;cursor:pointer;min-width:0}.rpc-plan-options input{position:absolute;opacity:0;width:1px;height:1px}.rpc-plan-options span{display:flex;align-items:center;justify-content:center;min-height:48px;padding:6px 2px;background:var(--rpc-soft);border:1px solid var(--rpc-line);border-radius:9px;font-size:clamp(10px,1.7vw,14px);overflow-wrap:anywhere}.rpc-plan-options input:checked+span{border:2px solid var(--rpc-blue);background:#eaf1ff;font-weight:700}.rpc-plan-options input:focus-visible+span{outline:3px solid #81b0ff;outline-offset:2px}.rpc-plan-options .rpc-unavailable{opacity:.38;cursor:not-allowed}.rpc-amount-wrap{display:flex;align-items:center;gap:10px}.rpc-amount-wrap input{flex:1;min-width:0}.rpc-currency{min-width:40px}.rpc-segments{display:grid;grid-template-columns:1fr 1fr;gap:5px;background:var(--rpc-soft);padding:4px;border-radius:10px}.rpc-calculator .rpc-segments button{cursor:pointer;border:0;border-radius:7px;padding:11px 8px;font:inherit;font-size:14px;background:transparent;color:#374457}.rpc-calculator .rpc-segments button.is-active{background:#fff;box-shadow:0 1px 4px #0b1c2d20;font-weight:700}.rpc-calculator button:focus-visible,.rpc-calculator select:focus-visible,.rpc-calculator input:focus-visible{outline:3px solid #89b2ff;outline-offset:2px}.rpc-result{margin-top:25px;padding:20px;background:var(--rpc-soft);border-radius:12px;text-align:center}.rpc-result-label{font-size:14px;color:var(--rpc-muted)}.rpc-result-number{display:block;margin:9px 0;font-size:clamp(32px,5vw,45px);line-height:1.18;overflow-wrap:anywhere}.rpc-result-period,.rpc-result-rate{font-size:13px;color:var(--rpc-muted);margin-top:5px}.rpc-display-segments{max-width:330px;margin:18px auto 0}.rpc-compare{margin-top:28px}.rpc-compare h3{font-size:19px;margin:0 0 18px}.rpc-comparison-rows{display:grid;gap:12px}.rpc-row{padding:11px;border:1px solid var(--rpc-line);border-radius:10px}.rpc-row-selected{border-color:var(--rpc-blue);background:#f8fbff}.rpc-row-summary{display:flex;justify-content:space-between;gap:10px;font-size:14px}.rpc-row-value{text-align:right}.rpc-bar{margin-top:9px;height:7px;border-radius:100px;background:#e3e8ef;overflow:hidden}.rpc-fill{display:block;height:100%;background:#8da0b8;border-radius:100px}.rpc-row-selected .rpc-fill{background:var(--rpc-blue)}.rpc-difference{font-size:12px;color:var(--rpc-muted);margin-top:7px}.rpc-footer{border-top:1px solid var(--rpc-line);padding-top:14px;margin-top:22px;font-size:12px;color:var(--rpc-muted)}.rpc-footer p{margin:7px 0}.rpc-footer a{text-decoration:underline}.rpc-error{color:#a32626;font-size:13px;margin:12px 0}
@media(max-width:460px){.rpc-calculator{padding:14px;border-radius:12px}.rpc-plan-options{gap:3px}.rpc-plan-options span{min-height:46px;font-size:10px}.rpc-row-summary{font-size:13px}}

/* v0.1.1: compact comparison, clearer controls and improved narrow screens */
.rpc-period-field{display:grid;gap:7px}
.rpc-period-heading{display:block;font-size:14px;font-weight:650;margin-bottom:3px}
.rpc-result-period-heading{margin-top:15px;color:var(--rpc-muted);font-weight:500;font-size:12px}
.rpc-display-segments{margin-top:7px}
.rpc-comparison-rows{gap:8px}
.rpc-row{padding:9px 11px}
.rpc-bar{margin-top:6px;height:6px}
.rpc-difference{margin-top:4px}
.rpc-compare h3{margin-bottom:12px}
@media(max-width:460px){.rpc-plan-options{gap:4px}.rpc-plan-options span{font-size:clamp(10px,2.6vw,12px);line-height:1.2;min-height:48px;padding:5px 1px}.rpc-row{padding:8px 10px}.rpc-comparison-rows{gap:7px}.rpc-row-summary{font-size:12.5px}.rpc-difference{font-size:11.5px}}

/* v0.1.2: modest vertical spacing reductions and readable result units */
.rpc-fields{gap:15px;margin-top:20px}
.rpc-result{margin-top:20px;padding:17px}
.rpc-compare{margin-top:22px}
.rpc-result-number{margin:7px 0;font-size:clamp(28px,4.5vw,42px)}
.rpc-footer{margin-top:18px}
@media(max-width:460px){.rpc-fields{gap:13px;margin-top:17px}.rpc-result{margin-top:17px;padding:15px 10px}.rpc-compare{margin-top:19px}.rpc-result-number{font-size:clamp(27px,7.1vw,36px)}}

/* v0.1.4: accessible notice for unavailable, unverified card-plan combinations */
.rpc-rule-notice{margin-top:14px;padding:13px 15px;border:1px solid #b9cbdf;border-radius:10px;background:#f1f6fc;color:#172d4a;font-size:14px;line-height:1.5}
.rpc-rule-notice-title{display:block;font-weight:700}
.rpc-rule-notice-description{margin:4px 0 0}

/* v0.1.5: note immediately below disabled plan buttons */
.rpc-blocked-plans-note{padding:12px 14px;margin:-7px 0 0;border:1px solid #b9cbdf;border-radius:9px;background:#f1f6fc;color:#172d4a;font-size:13px;line-height:1.5}
.rpc-blocked-plans-title{display:block;font-weight:700}
.rpc-blocked-plans-description{margin:4px 0 0}