:root{--primary:#2563eb;--primary-dark:#1d4ed8;--primary-soft:#eaf2ff;--navy:#0f2a44;--text:#172033;--muted:#64748b;--line:#dbe7f3;--soft:#f6f9fd;--white:#fff;--success:#15803d;--danger:#b91c1c;--shadow:0 14px 34px rgba(15,42,68,.09)}*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;color:var(--text);background:var(--soft);line-height:1.55}a{text-decoration:none;color:inherit}button,input{font:inherit}.container{width:min(1120px,calc(100% - 36px));margin:auto}.topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}.nav{min-height:74px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;gap:11px;font-weight:850;color:var(--navy)}.brand-mark{width:46px;height:46px;display:grid;place-items:center;border:1px solid var(--line);border-radius:8px;background:#fff}.brand img{width:38px;height:38px;object-fit:contain}.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.1em;text-transform:uppercase}.navlinks{margin-left:auto;display:flex;gap:22px;font-size:14px;font-weight:750;color:#41536a}.navlinks a:hover{color:var(--primary)}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border-radius:9px;border:1px solid var(--line);font-weight:850;cursor:pointer;transition:.18s}.btn:hover{transform:translateY(-1px)}.btn:disabled{cursor:not-allowed;opacity:.55;transform:none}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 9px 20px rgba(37,99,235,.17)}.btn.primary:hover:not(:disabled){background:var(--primary-dark)}.btn.secondary{background:#fff;color:var(--navy)}.full{width:100%}.grow{flex:1}.checkout-hero{padding:42px 0 30px;background:linear-gradient(180deg,#f8fbff,#f2f6fc);border-bottom:1px solid var(--line)}.kicker{color:var(--primary);font-size:12px;font-weight:900;letter-spacing:.1em;text-transform:uppercase}.checkout-hero h1{color:var(--navy);margin:8px 0;font-size:clamp(30px,4vw,45px);letter-spacing:-.03em}.checkout-hero p{color:var(--muted);margin:0}.checkout-section{padding:34px 0 72px}.checkout-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:24px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px;box-shadow:0 8px 25px rgba(15,42,68,.055)}.steps{display:flex;align-items:flex-start;margin-bottom:30px}.step{display:grid;justify-items:center;gap:5px;min-width:80px;color:#8495a9}.step span{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:#eef2f7;font-size:12px;font-weight:900}.step small{font-size:11px;font-weight:800}.step.active{color:var(--primary)}.step.active span{background:var(--primary);color:#fff}.step.done{color:var(--success)}.step.done span{background:#dcfce7;color:var(--success)}.steps i{height:2px;flex:1;background:#dce6f2;margin-top:15px}.checkout-step{display:none}.checkout-step.active{display:block}.step-heading{margin-bottom:20px}.step-heading h2,.summary h2,.result-card h2{font-size:24px;color:var(--navy);margin:5px 0}.step-heading p,.summary>p{color:var(--muted);margin:0}.step-number{display:inline-block;color:var(--primary);font-size:11px;font-weight:900;text-transform:uppercase;letter-spacing:.08em}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-grid label{font-size:13px;font-weight:850;color:var(--navy)}.form-grid input{width:100%;margin-top:7px;padding:13px;border:1px solid var(--line);border-radius:8px;outline:none}.form-grid input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.08)}.form-grid input.invalid{border-color:var(--danger)}.field-error{display:block;min-height:16px;margin-top:3px;color:var(--danger);font-size:11px;font-weight:600}.notice{margin:18px 0;padding:13px 15px;border-radius:8px;background:#f8fbff;border:1px solid #cfe0ff;color:#52657c;font-size:13px}.payment-options{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.pay-option{text-align:left;padding:16px;border:1px solid var(--line);border-radius:9px;background:#fff;cursor:pointer;color:var(--navy)}.pay-option b,.pay-option small{display:block}.pay-option small{color:var(--muted);font-size:12px}.pay-icon{display:grid;place-items:center;width:42px;height:34px;border-radius:7px;background:#eef4fb;color:var(--primary);font-size:10px;font-weight:900;margin-bottom:9px}.pay-option.active{border:2px solid var(--primary);background:#f8fbff}.method-panel{margin-top:16px;padding:18px;border:1px solid var(--line);border-radius:9px;background:#fbfdff}.empty-method{text-align:center;padding:18px;color:var(--muted)}.empty-method b{color:var(--navy)}.empty-method p{margin:5px 0}.method-title{display:flex;gap:14px;align-items:flex-start}.method-symbol{flex:0 0 44px;height:38px;display:grid;place-items:center;border-radius:7px;background:var(--primary-soft);color:var(--primary);font-size:10px;font-weight:900}.method-title h3{margin:0;color:var(--navy)}.method-title p{margin:3px 0;color:var(--muted);font-size:13px}.method-info{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:15px}.method-info span{padding:9px;border:1px solid var(--line);background:#fff;border-radius:7px;color:#52657c;font-size:11px}.secure-card-preview{margin-top:15px;padding:17px;border-radius:8px;background:#eff4fa}.card-line{height:12px;border-radius:4px;background:#cad7e5;width:45%}.card-line.long{width:100%;margin-bottom:14px}.card-row{display:flex;justify-content:space-between}.secure-card-preview small{display:block;margin-top:16px;color:var(--muted)}.terms{display:flex;gap:10px;align-items:flex-start;margin:20px 0;color:#52657c;font-size:13px}.button-row{display:flex;gap:10px}.summary{position:sticky;top:98px}.summary-features{list-style:none;padding:0;margin:16px 0}.summary-features li{position:relative;padding:4px 0 4px 20px;color:#52657c;font-size:13px}.summary-features li:before{content:'✓';position:absolute;left:0;color:var(--primary);font-weight:900}.summary-row{display:flex;justify-content:space-between;gap:20px;padding:13px 0;border-bottom:1px solid var(--line)}.summary-row.total{font-size:20px;color:var(--navy);border-bottom:0}.security-note{margin-top:18px;padding:15px;border-radius:8px;background:var(--soft);border:1px solid var(--line)}.security-note b{color:var(--navy)}.security-note p{margin:5px 0 0;color:var(--muted);font-size:12px}.status{display:none;margin-top:15px;padding:12px;border-radius:8px;font-size:13px}.status.show{display:block}.status.error{background:#fef2f2;color:var(--danger)}.status.ok{background:#f0fdf4;color:var(--success)}.result-card{text-align:center;padding:20px 5px}.result-icon{width:58px;height:58px;margin:0 auto 15px;display:grid;place-items:center;border-radius:50%;background:#dcfce7;color:var(--success);font-size:28px;font-weight:900}.result-card p{color:var(--muted)}.payment-output{margin:18px 0;padding:16px;text-align:left;border:1px solid var(--line);border-radius:8px;background:#f8fbff}.payment-output b{color:var(--navy)}.payment-output code{display:block;margin-top:8px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:6px;overflow-wrap:anywhere}.text-action{display:inline-block;margin-top:13px;color:var(--primary);font-weight:800}.footer-grid{display:flex;justify-content:space-between;gap:30px}footer{background:#fff;border-top:1px solid var(--line);padding:42px 0}.footer-grid p,.footer-grid a{display:block;color:var(--muted);font-size:13px}@media(max-width:900px){.navlinks{display:none}.checkout-grid{grid-template-columns:1fr}.summary{position:static}}@media(max-width:620px){.nav>.btn{display:none}.checkout-hero{padding-top:35px}.panel{padding:19px}.form-grid,.payment-options,.method-info{grid-template-columns:1fr}.steps{margin-left:-8px;margin-right:-8px}.step{min-width:70px}.step small{font-size:10px}.button-row{flex-direction:column-reverse}.footer-grid{flex-direction:column}.checkout-section{padding-bottom:50px}}
.api-state{display:inline-flex;margin-top:10px;padding:6px 9px;border-radius:7px;font-size:11px;font-weight:850}
.api-state.checking{background:#eef4fb;color:#52657c}
.api-state.online{background:#ecfdf5;color:#047857}
.api-state.offline{background:#fef2f2;color:#b91c1c}
.hidden{display:none!important}
.test-warning{display:grid;gap:3px;margin-bottom:16px;padding:12px;border:1px solid #f59e0b;border-radius:8px;background:#fff7ed;color:#9a3412;text-align:left}
.test-warning b{font-size:12px;letter-spacing:.08em}.test-warning span{font-size:12px;line-height:1.45}
.test-payment-output{text-align:center}.test-payment-output>p{text-align:center}.fake-qr{width:230px;max-width:100%;margin:18px auto;padding:14px;border:1px solid var(--line);border-radius:10px;background:#fff}.fake-qr svg{display:block;width:100%;height:auto;image-rendering:pixelated}.copy-row{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:stretch;margin:12px 0}.copy-row code{margin:0!important;text-align:left;min-width:0}.copy-button{border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--navy);padding:9px 12px;font-weight:850;cursor:pointer}.test-approve{margin-top:16px}.test-help{display:block;margin-top:10px;color:var(--muted);font-size:11px}.approval-error{margin-top:12px;padding:11px;border-radius:8px;background:#fef2f2;color:var(--danger);font-size:13px}.credentials-box{display:grid;gap:11px;margin:18px 0;padding:18px;border:1px solid #86efac;border-radius:10px;background:#f0fdf4;text-align:left}.credentials-box>span{color:#166534;font-size:11px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.credentials-box label{display:grid;gap:3px;color:#52657c;font-size:12px}.credentials-box strong{display:block;padding:10px;border:1px solid #bbf7d0;border-radius:7px;background:#fff;color:var(--navy);overflow-wrap:anywhere;font-size:15px}.credentials-box p{margin:0;color:#166534;font-size:12px}.credentials-box.existing{border-color:var(--line);background:#f8fbff}.account-meta{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:16px}.account-meta span{padding:8px 10px;border:1px solid var(--line);border-radius:7px;background:#fff;color:#52657c;font-size:12px}@media(max-width:620px){.copy-row{grid-template-columns:1fr}.fake-qr{width:210px}}