:root{--ink:#20352f;--muted:#68756f;--green:#215b48;--paper:#f7f6f1;--line:#dedfd6;--soft:#e9eee4;--white:#fffefa;--radius:12px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}button,input{font:inherit}button,a,input,summary{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #a97531;outline-offset:4px}.skip{position:absolute;left:16px;top:-80px;background:var(--ink);color:white;padding:8px 16px;z-index:10}.skip:focus{top:12px}.header{max-width:1200px;margin:auto;padding:28px 40px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:650;letter-spacing:2px}.brand-sub{font-size:13px;font-weight:400;letter-spacing:1px;color:var(--muted);padding-left:12px;border-left:1px solid #c7cbc2}.help-link{font-size:13px;color:#56675d}.help-link span{margin-left:12px}main{max-width:1120px;margin:auto}.redeem-layout{display:grid;grid-template-columns:1.15fr 1fr;align-items:center;gap:72px;padding:80px 0 72px}.eyebrow{font-size:11px;font-weight:650;letter-spacing:2px;color:var(--green);display:flex;align-items:center;gap:8px}.eyebrow>span{width:6px;height:6px;border-radius:50%;background:var(--green)}h1{font-size:44px;letter-spacing:-1px;line-height:1.5;font-weight:550;margin:20px 0}.accent{color:var(--green)}.intro-description{max-width:380px;color:var(--muted);font-size:15px;line-height:1.95}.steps{list-style:none;margin:36px 0 24px;padding:0}.steps li{display:flex;align-items:flex-start;gap:16px;margin-bottom:20px}.steps li>span{border:1px solid #d3dacf;color:var(--green);border-radius:50%;width:32px;height:32px;text-align:center;line-height:30px;font-size:11px;font-weight:600;flex-shrink:0}.steps strong{font-size:14px;font-weight:600}.steps p{margin:2px 0 0;font-size:12px;color:var(--muted)}.intro-note{font-size:11px;color:var(--muted);margin:28px 0 0}.intro-note span{margin:0 12px}.redeem-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:0 12px 32px #253e2e05}.panel-heading{display:flex;align-items:center;justify-content:space-between}.panel-icon{display:flex;align-items:center;justify-content:center;width:44px;height:44px;background:var(--soft);border:1px solid #d9e1d4;border-radius:10px;color:var(--green);font-size:24px}.tag{display:inline-block;background:var(--soft);border:1px solid #d8e0d4;border-radius:4px;font-size:11px;padding:2px 8px;color:var(--green)}.redeem-panel h2{font-size:24px;font-weight:550;margin:24px 0 4px}.muted{color:var(--muted);font-size:13px;margin:0 0 24px}form{margin-top:32px}label{display:block;font-size:13px;font-weight:600;margin-bottom:10px}input[type=text]{width:100%;min-width:0;border:1px solid #cfd5ca;border-radius:6px;background:#fafbf7;padding:14px 12px;font:13px/1.7 ui-monospace,SFMono-Regular,Consolas,"Microsoft YaHei",monospace;color:var(--ink)}input::placeholder{color:#7b867a;font-family:inherit}.field-hint{font-size:11px;color:var(--muted);margin:8px 0 24px}.primary{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;border:0;border-radius:6px;background:var(--green);color:#fff;padding:14px 18px;font-size:14px;cursor:pointer}.primary:hover{background:#194937;text-decoration:none}.primary:disabled{opacity:.65;cursor:wait}.security-note{font-size:11px;color:var(--muted);text-align:center;margin:16px 0 28px}.security-note span{color:var(--green);margin-right:4px}.panel-bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}.panel-bottom a{color:var(--green)}.error{background:#fdf0ec;color:#9c3425;font-size:12px;border-radius:6px;padding:10px 12px;margin:0 0 16px}.error ul{list-style:none;padding:0;margin:0}.notice{font-size:12px;background:#f5f0df;border-left:3px solid #a88537;padding:12px;margin-top:16px}.help-section{border-top:1px solid var(--line);padding:40px 0 48px;display:grid;grid-template-columns:1fr 1fr;gap:72px}.help-section h2{font-size:20px;font-weight:550;margin:8px 0 12px}.help-section p{color:var(--muted);font-size:12px;max-width:380px}.faq-list details{border-bottom:1px solid var(--line);padding:16px 0}.faq-list details:first-child{padding-top:0}.faq-list summary{font-size:13px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:'+';color:var(--green);font-size:18px;line-height:1}.faq-list details[open] summary:after{content:'−'}.faq-list details p{max-width:none;margin-bottom:0}.receipt-wrap{max-width:720px;padding:72px 0;margin:auto}.receipt-content{border:1px solid var(--line);border-radius:var(--radius);padding:32px;background:var(--white);margin-top:32px}.delivery-text{font-size:16px;line-height:1.9;margin:24px 0;overflow-wrap:anywhere}.delivery-link{max-width:260px}.receipt-note{font-size:12px;color:var(--muted);margin:20px 0}.back-link{font-size:13px;color:var(--green)}footer{max-width:1200px;margin:auto;border-top:1px solid var(--line);padding:24px 40px;display:flex;gap:16px;justify-content:space-between;font-size:11px;color:var(--muted)}@media(min-width:1500px){.redeem-layout{padding-top:100px;padding-bottom:96px}}@media(max-width:1199px){main{padding:0 40px}.redeem-layout{gap:40px}h1{font-size:38px}}@media(max-width:850px){.redeem-layout{gap:28px}h1{font-size:30px}.redeem-panel{padding:24px}.help-section{gap:32px}}@media(max-width:640px){.header{padding:20px}.brand{font-size:20px;gap:10px}.brand-sub{font-size:11px;padding-left:10px}.help-link{font-size:12px}.help-link span{margin-left:4px}main{padding:0 20px}.redeem-layout{grid-template-columns:1fr;gap:32px;padding:36px 0}.intro h1{font-size:32px;margin:16px 0}.intro-description{font-size:13px}.steps{display:none}.intro-note{margin-top:16px}.redeem-panel h2{margin-top:20px}.help-section{grid-template-columns:1fr;gap:20px;padding:28px 0 36px}.help-section h2{font-size:18px}.help-section .eyebrow{margin-top:0}.receipt-wrap{padding:36px 0}.receipt-wrap h1{font-size:30px}.receipt-content{padding:24px}footer{padding:20px;flex-direction:column;gap:4px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}