.buyer-shell{--buyer-bg:#f6f7f3;--buyer-surface:#fff;--buyer-ink:#202e29;--buyer-muted:#66736c;--buyer-line:#e3e8e1;--buyer-accent:#285a44;--buyer-tint:#edf3eb;background:radial-gradient(ellipse at 50% 20%, #e9efdf 0, transparent 50%), var(--buyer-bg);min-height:100svh;color:var(--buyer-ink);font-family:var(--font-geist-sans), "PingFang SC", "Microsoft YaHei", sans-serif;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;padding:0 24px;line-height:1.65}.buyer-shell *{box-sizing:border-box}.buyer-nav,.buyer-footer{justify-content:space-between;align-items:center;gap:20px;max-width:1080px;margin:0 auto;display:flex}.buyer-nav{border-bottom:1px solid var(--buyer-line);height:88px}.buyer-brand{letter-spacing:-.5px;align-items:center;gap:11px;font-size:17px;font-weight:650;display:inline-flex}.brand-symbol{flex-shrink:0;width:36px;height:36px;display:block}.brand-service{color:var(--buyer-muted);margin-left:6px;font-size:14px;font-weight:500}.buyer-shell a{text-decoration:none}.buyer-shell .help-link{color:var(--buyer-muted);font-size:13px}.help-link span{margin-left:8px}.buyer-shell a:hover{color:var(--buyer-accent)}.buyer-shell :focus-visible{outline-offset:4px;outline:3px solid #7b9e68}.buyer-skip{background:var(--buyer-surface);z-index:1;padding:12px;position:absolute;top:-100px;left:24px}.buyer-skip:focus{top:12px}.redeem{width:100%;max-width:600px;margin:0 auto;padding:54px 0 64px}.redeem-head{text-align:center;margin-bottom:34px}.eyebrow{letter-spacing:2px;color:var(--buyer-accent);align-items:center;gap:8px;font-size:10px;font-weight:600;display:inline-flex}.eyebrow>span{background:var(--buyer-accent);border-radius:50%;width:6px;height:6px}.redeem-head h1{letter-spacing:-2px;margin:15px 0 14px;font-size:clamp(32px,5vw,44px);font-weight:600;line-height:1.3}.redeem-head p{color:var(--buyer-muted);font-size:14px}.mobile-break{display:none}.activation-card{border:1px solid var(--buyer-line);background:var(--buyer-surface);border-radius:22px;overflow:hidden;box-shadow:0 16px 48px -24px #243a2929,0 2px 6px #243a2903}.card-heading{justify-content:space-between;align-items:center;padding:28px 32px 24px;display:flex}.card-kicker{letter-spacing:1.8px;color:var(--buyer-muted);font-size:9px}.card-heading h2{letter-spacing:-.5px;margin-top:4px;font-size:21px;font-weight:600}.card-mark{border:1px solid var(--buyer-line);width:42px;height:42px;color:var(--buyer-accent);border-radius:50%;place-items:center;font-size:24px;display:grid}.stepper{border-bottom:1px solid var(--buyer-line);grid-template-columns:repeat(3,1fr);gap:12px;margin:0;padding:0 32px 24px;list-style:none;display:grid}.stepper li{color:var(--buyer-muted);align-items:center;gap:8px;font-size:12px;display:flex}.step-number{border:1px solid var(--buyer-line);border-radius:50%;flex-shrink:0;place-items:center;width:27px;height:27px;font-size:10px;display:grid}.stepper [aria-current=step]{color:var(--buyer-accent);font-weight:600}.stepper [aria-current=step] .step-number{color:#fff;background:var(--buyer-accent);border-color:var(--buyer-accent)}.stepper .complete .step-number{background:var(--buyer-tint);color:var(--buyer-accent)}.buyer-shell .step{flex-direction:column;gap:18px;min-width:0;padding:28px 32px 30px;display:flex}.buyer-shell .step-title{font-size:16px;font-weight:600}.buyer-shell .step-description{color:var(--buyer-muted);margin-top:-10px;font-size:13px}.buyer-shell .field{flex-direction:column;gap:9px;display:flex}.buyer-shell .field-label{font-size:13px;font-weight:500}.buyer-shell .field-input{background:var(--buyer-surface);width:100%;min-width:0;color:var(--buyer-ink);border:1px solid #cdd6ce;border-radius:9px;padding:13px 14px;font-family:inherit;font-size:16px;transition:border-color .15s,box-shadow .15s}.buyer-shell .field-input::placeholder{color:#7b857e;font-size:13px}.buyer-shell .field-input:focus{border-color:var(--buyer-accent);box-shadow:0 0 0 3px var(--buyer-tint);outline:none}.buyer-shell textarea.field-input{resize:vertical;overflow-wrap:anywhere;min-height:100px}.buyer-shell .session-input{font-family:var(--font-geist-mono), monospace;font-size:13px}.buyer-shell .primary,.buyer-shell .secondary{cursor:pointer;border-radius:9px;justify-content:center;align-items:center;min-height:46px;padding:11px 20px;font-size:14px;font-weight:550;transition:background .15s,box-shadow .15s;display:inline-flex}.buyer-shell .primary{background:var(--buyer-accent);color:#fff;border:1px solid #0000;width:100%;box-shadow:0 2px 3px #183b2310}.buyer-shell .primary:hover:not(:disabled){background:#1b4432;box-shadow:0 4px 12px #183b2325}.buyer-shell .primary:disabled{opacity:.55;cursor:wait}.buyer-shell .secondary{background:var(--buyer-surface);color:var(--buyer-ink);border:1px solid var(--buyer-line);flex-shrink:0}.buyer-shell .secondary:hover{background:var(--buyer-tint)}.buyer-shell .security{border-top:1px solid var(--buyer-line);background:var(--buyer-tint);color:var(--buyer-muted);align-items:flex-start;gap:10px;padding:17px 32px;font-size:11px;line-height:1.8;display:flex}.security svg{width:17px;height:17px;color:var(--buyer-accent);flex-shrink:0;margin-top:2px}.buyer-shell .hint,.buyer-shell .plan{color:var(--buyer-muted);overflow-wrap:anywhere;font-size:13px}.buyer-shell .plan{border:1px solid var(--buyer-line);background:var(--buyer-tint);color:var(--buyer-accent);border-radius:6px;align-self:flex-start;padding:4px 10px}.buyer-shell .error{color:#ad3933;overflow-wrap:anywhere;font-size:13px}.buyer-shell .confirm{background:var(--buyer-tint);color:var(--buyer-accent);overflow-wrap:anywhere;border-radius:8px;padding:12px;font-size:13px}.session-guide{border:1px solid var(--buyer-line);border-radius:9px;padding:12px 14px;font-size:13px}.buyer-shell summary{cursor:pointer;font-weight:500}.buyer-shell .guide{color:var(--buyer-muted);overflow-wrap:anywhere;flex-direction:column;gap:8px;margin-top:12px;padding-left:18px;list-style:decimal;display:flex}.buyer-shell .guide a,.buyer-shell .handoff a{color:var(--buyer-accent);text-underline-offset:3px;text-decoration:underline}.buyer-shell .progress,.buyer-shell .result{overflow-wrap:anywhere;flex-direction:column;gap:14px;font-size:14px;display:flex}.buyer-shell .result-title{font-size:20px;font-weight:600}.buyer-shell .result.success{text-align:center;background:var(--buyer-tint);color:var(--buyer-accent);border-radius:12px;padding:28px 20px}.buyer-shell .result.success:before{content:"✓";background:var(--buyer-accent);color:#fff;border-radius:50%;place-items:center;width:44px;height:44px;margin:0 auto;font-size:23px;display:grid}.buyer-shell .result.failure .result-title{color:#ad3933}.buyer-shell .result.pending .result-title{color:#8f641a}.buyer-shell .handoff{border-top:1px solid var(--buyer-line);flex-direction:column;gap:12px;margin-top:8px;padding-top:20px;display:flex}.buyer-shell .handoff-title{font-size:14px;font-weight:600}.buyer-shell .handoff-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.restore-state{color:var(--buyer-muted);padding:40px 32px;font-size:14px}.buyer-help{margin:38px 8px 0;scroll-margin-top:24px}.help-heading{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.help-heading h2{font-size:14px;font-weight:600}.help-heading>span{color:var(--buyer-muted);font-size:11px}.buyer-help details{border-bottom:1px solid var(--buyer-line)}.buyer-help summary{padding:17px 26px 17px 0;font-size:13px;list-style:none;position:relative}.buyer-help summary::-webkit-details-marker{display:none}.buyer-help summary:after{content:"+";color:var(--buyer-muted);font-size:18px;position:absolute;top:12px;right:0}.buyer-help details[open] summary:after{content:"−"}.buyer-help details p{color:var(--buyer-muted);padding:0 22px 18px 0;font-size:13px}.buyer-footer{border-top:1px solid var(--buyer-line);color:var(--buyer-muted);padding:22px 0;font-size:11px}@media (max-width:600px){.buyer-shell{padding:0 20px}.buyer-nav{height:72px}.redeem{padding:36px 0 40px}.redeem-head{margin-bottom:28px}.redeem-head h1{letter-spacing:-1px}.redeem-head p{max-width:270px;margin:0 auto;font-size:13px}.card-heading{padding:22px 22px 20px}.card-heading h2{font-size:19px}.stepper{gap:6px;padding:0 22px 20px}.stepper li{gap:5px;font-size:11px}.step-number{width:23px;height:23px;font-size:9px}.buyer-shell .step{padding:24px 22px}.buyer-shell .security{padding:16px 22px}.buyer-help{margin:28px 2px 0}.buyer-footer{flex-direction:column;gap:4px}.buyer-shell .session-input{font-size:16px}}@media (max-width:360px){.buyer-shell{padding:0 14px}.mobile-break{display:initial}.stepper{padding-left:16px;padding-right:16px}}@media (prefers-reduced-motion:reduce){.buyer-shell .field-input,.buyer-shell .primary,.buyer-shell .secondary{transition:none}}.connection-notice{background:#fff9ed;border:1px solid #dfc897;border-radius:8px;padding:14px;font-size:13px}.connection-notice .secondary,.restore-state .secondary{margin-top:12px}.success-summary{flex-direction:column;gap:16px;display:flex}.buyer-shell a.primary{text-align:center;color:#fff;display:block}.buyer-shell a.primary:hover{color:#fff}.buyer-shell .receipt{overflow-wrap:anywhere}.buyer-shell .poll-meta{font-variant-numeric:tabular-nums;font-size:12px}