:root{--ink:#172b25;--muted:#617168;--green:#18794e;--line:#dce7df;--soft:#edf6ef;--paper:#fff;--radius:22px}*{box-sizing:border-box}body{margin:0;background:#fafcf9;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7}a{color:var(--green);text-decoration:none}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #64ad80;outline-offset:5px}[hidden]{display:none!important}.site-header{background:rgba(255,255,255,.96);border-bottom:1px solid var(--line)}.header-inner{max-width:1120px;margin:auto;padding:18px 28px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:750;color:var(--ink)}.brand img{border-radius:9px}.back-link{font-size:14px}.back-link span{margin-left:8px}main{max-width:880px;margin:auto;padding:0 28px}.intro{text-align:center;padding:64px 0 36px}.app-badge{display:inline-flex;align-items:center;gap:15px;padding:10px 19px 10px 10px;background:white;border:1px solid var(--line);border-radius:20px;font-size:14px;color:var(--muted)}.app-badge img{border-radius:15px}.eyebrow,.section-label{font-size:12px;font-weight:650;letter-spacing:1px;color:var(--green)}.eyebrow{margin:24px 0 12px}h1{font-size:46px;letter-spacing:-1.5px;line-height:1.3;margin:0 0 18px}h2,h3,p{margin-top:0}.intro-copy{color:var(--muted);font-size:17px;margin-bottom:0}.mobile-break{display:none}.choice-heading{font-size:15px;text-align:center;font-weight:500;color:var(--muted);margin:0 0 18px}.choices{display:grid;grid-template-columns:1fr 1fr;gap:16px}.choice{display:flex;align-items:center;gap:14px;text-align:left;background:white;border:1px solid var(--line);border-radius:16px;padding:22px 20px;color:var(--ink);transition:border-color .15s,background .15s,box-shadow 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p{font-size:14px;color:var(--muted);margin-bottom:0}.button{display:inline-flex;align-items:center;justify-content:center;gap:16px;border-radius:12px;padding:13px 20px;font-size:14px;font-weight:650;min-height:48px;text-align:center;border:1px solid transparent}.primary{background:var(--green);color:white}.primary:hover{background:#12643f}.secondary{background:white;border-color:var(--line);color:var(--green)}.secondary:hover{border-color:var(--green)}.panel-actions{display:flex;align-items:center;flex-wrap:wrap;gap:18px}.text-link{font-size:14px;font-weight:600;color:var(--green);background:none;border:0;padding:0}.ready-note{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 4px}.ready-note p{font-size:14px;color:var(--muted);margin:0}.download-card{background:var(--soft);padding:32px;border:1px solid #d2e5d8;border-radius:var(--radius);display:grid;grid-template-columns:72px 1fr;column-gap:22px;row-gap:24px;align-items:center}.download-card img{border-radius:16px}.download-card h2{font-size:25px;margin:6px 0 8px}.download-card p{font-size:14px;color:var(--muted);margin:0}.download-card .button{grid-column:1/-1;justify-self:start}.install-steps{padding:28px 8px 0}.install-steps>h3{font-size:18px}.faq{margin:54px 0 32px}.section-intro{margin-bottom:22px}.section-intro h2{font-size:26px;margin:6px 0 0}.faq details{border-bottom:1px solid var(--line)}.faq summary{padding:20px 0;font-size:15px;font-weight:600;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;cursor:pointer}.faq-answer{font-size:14px;color:var(--muted);padding:0 30px 22px 0}.faq-answer a{font-weight:600}.help-card{border:1px solid var(--line);padding:28px;border-radius:var(--radius);background:white;display:flex;align-items:center;justify-content:space-between;gap:28px;margin-bottom:40px}.help-card h2{font-size:22px;margin:6px 0}.help-card p{font-size:14px;color:var(--muted);margin:0}.help-actions{display:flex;flex-direction:column;align-items:center;gap:14px;flex-shrink:0}footer{max-width:880px;margin:auto;padding:24px 28px 36px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}footer nav{display:flex;flex-wrap:wrap;gap:20px}.source-note{font-size:11px;margin:20px 0 0;color:#748379}.download-flow{padding-top:6px}@media(max-width:600px){.header-inner{padding:15px 20px}.brand{font-size:16px}.brand img{width:30px;height:30px}.back-link{font-size:12px}main{padding:0 20px}.intro{padding:38px 0 28px}h1{font-size:34px;letter-spacing:-1px}.intro-copy{font-size:15px}.mobile-break{display:block}.app-badge img{width:50px;height:50px}.app-badge{font-size:12px}.choices{grid-template-columns:1fr;gap:12px}.choice{padding:18px}.choice strong{font-size:15px}.flow-panel{margin-top:22px}.panel-heading{padding:23px 21px}.panel-heading h2,.download-card h2{font-size:22px}.tutorial summary{padding:20px}.tutorial summary strong{font-size:16px}.tutorial-body{padding:20px}.steps li{gap:12px}.panel-actions{align-items:stretch;flex-direction:column;gap:15px}.panel-actions .text-link{text-align:center}.download-card{padding:24px;grid-template-columns:54px 1fr;gap:18px}.download-card img{width:54px;height:54px;border-radius:12px}.download-card .button{width:100%}.ready-note{align-items:flex-start;flex-direction:column;gap:8px}.faq{margin-top:36px}.section-intro h2{font-size:23px}.faq summary{font-size:14px}.help-card{padding:23px;flex-direction:column;align-items:stretch;gap:20px}.help-actions{align-items:stretch}.help-actions .text-link{text-align:center}footer{padding:24px 20px 30px}footer nav{gap:16px}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
/* Illustrated registration and shared-store-account walkthrough. */
.diagram-note{font-size:13px!important;background:#f5f8f4;border-radius:10px;padding:12px 15px;line-height:1.8}.prep-strip{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 28px}.prep-strip span{padding:6px 13px;background:var(--soft);color:var(--green);border-radius:99px;font-size:12px}.illustrated-steps{list-style:none;padding:0;margin:0}.illustrated-step{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,270px);gap:30px;align-items:center;padding:30px 0;border-bottom:1px solid var(--line);scroll-margin-top:28px}.illustrated-step:last-child{border-bottom:0}.step-index{font-size:11px;font-weight:750;letter-spacing:1.5px;color:var(--green)}.step-copy h3{font-size:20px;line-height:1.5;margin:9px 0 12px}.step-copy p{font-size:14px;line-height:1.9;color:var(--muted);margin:0 0 16px}.step-copy .button{font-size:12px;padding:10px 13px;min-height:42px}.illustrated-step figure{margin:0}.step-image-button{display:block;padding:0;border:1px solid #e1e9e2;border-radius:16px;background:#f0f5f1;overflow:hidden;width:100%;position:relative}.step-image-button img{display:block;width:100%;height:auto}.image-zoom{position:absolute;bottom:10px;right:10px;background:white;color:var(--green);padding:5px 9px;font-size:10px;border-radius:8px;box-shadow:0 2px 8px #172b2510}.illustrated-step figcaption{font-size:10px;text-align:center;color:#748379;margin-top:8px}.image-viewer{width:min(94vw,660px);max-height:94vh;border:0;border-radius:20px;padding:20px;overflow:auto;box-shadow:0 20px 80px #0004}.image-viewer::backdrop{background:#132b25b0}.viewer-header{display:flex;align-items:center;justify-content:space-between;gap:18px;position:sticky;top:-20px;background:white;padding:10px 0;z-index:1}.viewer-header h2{font-size:16px;margin:0}.viewer-close{border:1px solid var(--line);border-radius:50%;background:white;flex:0 0 38px;height:38px;font-size:26px;color:var(--ink);line-height:1}.image-viewer img{display:block;width:100%;height:auto;border-radius:14px}.image-viewer>p{font-size:11px;color:var(--muted);text-align:center;margin:12px 0 0}.public-important{padding:14px 16px;border-left:3px solid var(--green);background:var(--soft);color:var(--ink)!important;font-weight:600;font-size:14px}.public-account-card{border:1px solid #d2e5d8;background:#f7fbf7;border-radius:16px;padding:20px;margin:20px 0}.account-card-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:15px}.account-status{font-size:11px;border-radius:99px;background:#e8f3ec;color:var(--green);padding:4px 10px}.account-field{display:grid;grid-template-columns:35px minmax(0,1fr) auto;align-items:center;gap:10px;padding:13px 0;border-bottom:1px solid var(--line);font-size:13px}.account-field code{font:inherit;word-break:break-all;user-select:text}.account-field button{background:white;border:1px solid var(--line);border-radius:8px;color:var(--green);padding:6px 9px;font-size:11px}.public-account-card p{color:var(--muted);font-size:12px;line-height:1.8;margin:12px 0 0}.public-account-card .copy-status{color:var(--green);min-height:1em}.account-updated{font-size:11px!important}.install-steps .illustrated-step{grid-template-columns:minmax(0,1fr) minmax(0,270px)}@media(max-width:600px){.illustrated-step,.install-steps .illustrated-step{grid-template-columns:1fr;gap:16px;padding:24px 0}.step-copy h3{font-size:18px}.illustrated-step figure{width:min(100%,300px);justify-self:center}.tutorial-body .illustrated-step figure{width:100%}.step-copy p{margin-bottom:0}.step-copy .button{margin-top:15px}.image-viewer{padding:14px;border-radius:15px}.viewer-header{top:-14px}.account-field{grid-template-columns:30px minmax(0,1fr);gap:8px}.account-field button{grid-column:2;justify-self:start}.public-account-card{padding:17px}.prep-strip{gap:6px}.prep-strip span{font-size:11px;padding:5px 10px}}
/* Hong Kong walkthrough: phone image at left, numbered instructions at right. */
.intro h1{font-size:38px;letter-spacing:-1px}.illustrated-step{grid-template-columns:minmax(0,280px) minmax(0,1fr);gap:36px}.illustrated-step .step-copy{grid-column:2;grid-row:1}.illustrated-step figure{grid-column:1;grid-row:1}.step-index{display:inline-block;border:1px solid #afd0b9;border-radius:99px;padding:4px 12px;background:var(--soft);letter-spacing:0;color:var(--green);font-size:13px}.step-image-button{border:0;border-radius:12px}.install-steps .illustrated-step{grid-template-columns:minmax(0,280px) minmax(0,1fr)}@media(max-width:600px){.intro h1{font-size:30px}.illustrated-step,.install-steps .illustrated-step{grid-template-columns:1fr;gap:16px}.illustrated-step .step-copy{grid-column:1;grid-row:1}.illustrated-step figure{grid-column:1;grid-row:2}}

/* Download entry matches the homepage card. */
.download-card{display:flex;justify-content:space-between;align-items:center;gap:28px;padding:28px;border-radius:20px}.download-card>div{flex:1;min-width:0}.download-card h2{font-size:22px;margin:0 0 10px}.download-card p{font-size:15px;line-height:1.8}.download-card p a{color:var(--primary);white-space:nowrap}.download-card .button{flex-shrink:0;justify-self:auto;white-space:nowrap}@media(max-width:640px){.download-card{flex-direction:column;align-items:stretch;padding:24px;gap:20px}.download-card .button{width:100%;text-align:center}}

@media(max-width:640px){.header-inner{padding:14px 16px}main{padding:0 16px}.intro{padding:28px 0 24px}.intro h1{font-size:28px;line-height:1.35;margin-bottom:12px}.intro-copy{font-size:14px;line-height:1.7}.choices{gap:10px}.choice{min-width:0;padding:14px;gap:10px}.choice>span:nth-child(2){flex:1;min-width:0}.choice-symbol{flex-basis:30px;height:30px}.choice strong{font-size:14px;line-height:1.5}.choice small{font-size:11px}.flow-panel{margin-top:18px}.download-card{padding:20px;gap:16px}.download-card h2{font-size:20px}.download-card p{font-size:14px}.download-card p a{white-space:normal;color:var(--green)}.tutorial summary{padding:18px 16px;gap:12px}.tutorial summary>span:first-child{min-width:0}.tutorial summary strong{font-size:16px;line-height:1.6;overflow-wrap:anywhere}.tutorial-body{padding:18px 16px}.button{max-width:100%;white-space:normal}.illustrated-step figure,.step-copy{min-width:0}.illustrated-step img{max-width:100%;height:auto}.account-field code{overflow-wrap:anywhere}.panel-heading{padding:20px}.panel-heading h2{font-size:21px}.install-steps{margin-top:24px}}