:root{--green-900: #013d1c;--green-800: #004d24;--green: #00652e;--green-600: #147c3c;--lime: #99bd13;--lime-soft: #c7dc91;--ink: #10231a;--muted: #4b5d53;--paper: #f4f7f2;--surface: #fff;--border: #dce6dc;--on-green: #fff;--on-green-soft: #cfe3d3}*{box-sizing:border-box}body{min-width:320px;margin:0;color:var(--ink);background:var(--paper);font-family:Roboto,ui-sans-serif,system-ui,sans-serif;-webkit-font-smoothing:antialiased}.payment-shell{min-height:100vh;display:grid;grid-template-columns:minmax(360px,.96fr) minmax(520px,1.04fr)}.welcome-panel{position:relative;display:flex;min-height:100vh;overflow:hidden;color:var(--on-green);background:radial-gradient(120% 80% at 100% 0%,rgba(153,189,19,.18),transparent 50%),linear-gradient(150deg,var(--green-900),var(--green-800) 58%,var(--green))}#neural{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;opacity:.9}.welcome-content{position:relative;z-index:1;display:flex;flex-direction:column;width:min(470px,calc(100% - 72px));min-height:100vh;margin:auto;padding:54px 0}.logo-badge{display:inline-flex;width:max-content;padding:10px 13px;border-radius:10px;background:var(--surface)}.mensa-logo{display:block;width:174px;max-height:54px;object-fit:contain;object-position:left}.step-marker{display:inline-flex;align-items:center;gap:10px;margin-top:clamp(80px,16vh,160px);color:var(--lime-soft);font-size:.77rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.step-marker span,.support-dot{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 5px #99bd1324}h1{max-width:540px;margin:20px 0 22px;font-size:clamp(3.1rem,5.3vw,5.15rem);font-weight:700;letter-spacing:-.028em;line-height:.98}h1 em{color:var(--lime);font-style:normal}.welcome-content>p{max-width:445px;margin:0;color:var(--on-green-soft);font-size:1.05rem;line-height:1.65}.welcome-footer{display:flex;align-items:center;gap:10px;margin-top:auto;color:var(--on-green-soft);font-size:.9rem}.footer-mark{color:var(--lime);font-size:1.2rem}.payment-panel{display:flex;align-items:center;background:var(--paper);padding:48px clamp(32px,7vw,112px)}.payment-content{width:min(100%,520px);margin-inline:auto}h2{margin:0;color:var(--green-900);font-size:clamp(2.35rem,3.8vw,3.7rem);font-weight:700;letter-spacing:-.028em;line-height:.98}.panel-heading>p:last-child{max-width:470px;margin:20px 0 30px;color:var(--muted);font-size:1rem;line-height:1.62}.info-text{margin-bottom:21px;padding:15px 17px;border:1px solid var(--border);border-radius:12px;color:var(--muted);background:#ffffff9e;font-size:.9rem;line-height:1.5}.info-text p{margin:0}#options-row{display:grid;gap:11px;margin:0}#options-row>[class*=col]{width:100%;padding:0;margin:0!important}.custom-btn{position:relative;width:100%;min-height:98px;padding:18px 20px;border:1px solid var(--border);border-radius:12px;color:var(--ink);background:var(--surface);box-shadow:0 10px 24px -22px #013d1cbf;font:inherit;font-size:1rem;font-weight:500;line-height:1.45;text-align:left;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background-color .2s ease}.custom-btn strong{display:inline-block;margin:3px 0 2px;color:var(--green);font-size:1.08rem;font-weight:700}.custom-btn:hover,.custom-btn:focus-visible{z-index:1;transform:translateY(-2px);border-color:var(--green-600);background:#fff;box-shadow:0 18px 30px -23px #013d1ca6}.custom-btn:disabled{cursor:wait;opacity:.62}.loading-placeholder{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:.94rem;padding:17px 3px}.loading-placeholder span{width:17px;height:17px;border:2px solid var(--border);border-top-color:var(--green);border-radius:50%;animation:spin .75s linear infinite}.support-note{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:29px;padding-top:21px;border-top:1px solid var(--border);color:var(--muted);font-size:.88rem}.support-dot{width:6px;height:6px;box-shadow:none}.support-note a{color:var(--green);font-weight:700;text-decoration-thickness:1px;text-underline-offset:3px}.alert-danger{margin:0 0 18px;border-color:#d68e82;background:#fff6f4;color:#81382e;font-size:.92rem}.modal-content{border:0;border-radius:16px;box-shadow:0 28px 70px -30px #013d1c80;font-family:inherit}.modal-header{border-bottom:1px solid var(--border);padding:22px 24px 16px;color:var(--green-900)}.modal-body{padding:22px 24px;color:var(--muted);line-height:1.6}.modal-footer{border:0;padding:0 24px 24px}.modal .btn{border-radius:999px;font-weight:700}#confirmPaymentBtn{border:0;background:var(--green)}#confirmPaymentBtn:hover{background:var(--green-600)}:focus-visible{outline:3px solid var(--lime);outline-offset:3px}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:820px){.payment-shell{grid-template-columns:1fr}.welcome-panel{min-height:400px}.welcome-content{width:min(100% - 48px,600px);min-height:400px;padding:34px 0 30px}.step-marker{margin-top:72px}h1{font-size:clamp(3rem,11vw,4.8rem)}.welcome-footer{margin-top:44px}.payment-panel{padding:48px 24px 58px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}