:root{font-family:"Noto Sans SC","PingFang SC",system-ui,sans-serif;color:#18181b;background:#f6f6f8;font-synthesis:none;-webkit-text-size-adjust:100%;text-size-adjust:100%}*{box-sizing:border-box}body{margin:0;min-width:320px}.browser-shell{min-height:100vh;min-height:100dvh;background:#f6f6f8}.tab-bar,.address-bar{display:none}.app-shell{min-height:100vh;min-height:100dvh;background:#f6f6f8}.top-nav{height:88px;background:#fff;border-bottom:1px solid #e0e0e5;display:flex;align-items:center;justify-content:space-between;padding:0 26px 0 32px}.brand{display:flex;align-items:center;gap:18px;font-size:24px;font-weight:600}.brand-mark{width:28px;height:40px;background:#3157df;border-radius:100% 0 100% 0;transform:rotate(-38deg);position:relative}.brand-mark:after{content:"";position:absolute;width:2px;height:30px;background:#fff;left:13px;top:5px;transform:rotate(38deg);opacity:.9}.top-nav nav{display:flex;gap:32px}.text-button,.outline-button{height:48px;border-radius:12px;padding:0 24px;font:inherit;font-size:18px;cursor:pointer}.text-button{border:0;background:#3157df;color:#fff}.outline-button{border:1px solid #dde3df;background:#fff;color:#1b241f}.content{min-height:calc(100vh - 88px);min-height:calc(100dvh - 88px);display:grid;place-items:center;padding:48px 20px}.exchange-card,.progress-card,.invite-card{width:min(400px,100%);background:#fff;border:1px solid #e0e0e5;border-radius:12px;box-shadow:0 2px 8px rgba(0,0,0,.06)}.exchange-card{padding:28px 24px}.exchange-card h1{font-size:18px;line-height:26px;margin:0 0 22px}.exchange-card form{display:grid;gap:6px}.exchange-card label{font-size:13px;font-weight:600;color:#27272a}.exchange-card input,.invite-card input{height:42px;border:1px solid #e0e0e5;border-radius:8px;padding:0 13px;font:inherit;font-size:14px;outline:none}.exchange-card input:focus,.invite-card input:focus{border-color:#1f57eb;box-shadow:0 0 0 3px rgba(31,87,235,.12)}.hint{font-size:12px;color:#a1a1aa;margin:2px 0 8px}.primary-button{height:44px;border:0;border-radius:8px;background:#3157df;color:#fff;font:inherit;font-size:14px;font-weight:600;cursor:pointer;box-shadow:0 2px 6px rgba(31,87,235,.18)}.progress-card{width:min(700px,100%);padding:30px 32px;position:relative}.status-pill{display:inline-flex;padding:6px 14px;border-radius:999px;background:#e9efff;color:#1f57eb;font-size:13px;font-weight:600}.progress-card h2{font-size:24px;margin:18px 0 8px}.progress-copy{font-size:14px;color:#61616b;margin:0 0 28px}.progress-row{display:flex;justify-content:space-between;color:#61616b;font-size:13px;margin-bottom:9px}.progress-row strong{color:#1f57eb}.progress-track{height:8px;background:#e9ecf4;border-radius:5px;overflow:hidden}.progress-track span{display:block;width:58%;height:100%;background:#1f57eb;border-radius:5px}.order-info{display:grid;grid-template-columns:1fr 1fr;gap:14px 24px;background:#f7f9fc;padding:18px;border-radius:10px;margin:24px 0 18px;font-size:13px}.order-info div{display:flex;flex-direction:column;gap:4px}.order-info span{color:#8b8f9c}.order-info strong{font-weight:500;color:#3f414a}.refresh{height:38px}.hidden{display:none}.invite-wrap{width:min(800px,100%);text-align:left}.recharge-type{font-size:18px;margin:0 0 42px;color:#18181b}.steps{display:flex;align-items:center;justify-content:flex-start;gap:12px;margin-bottom:48px}.steps b{width:64px;height:3px;background:#dfe3ec}.step{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:#c7c9ce;color:#fff;font-size:17px;font-weight:600;flex:none}.step.done,.step.active{background:#3157df}.step-label{font-size:18px;color:#30343c;white-space:nowrap}.invite-wrap h2{font-size:48px;line-height:1.2;margin:0 0 24px}.invite-sub{font-size:20px;color:#61616b;margin:0 0 34px}.invite-card{width:100%;max-width:800px;padding:34px 38px;text-align:left;border-radius:16px}.invite-card label{display:block;font-size:20px;font-weight:600;margin-bottom:16px}.invite-card input{width:100%;height:72px;font-size:24px;padding:0 24px;border-radius:12px}.invite-card .hint{font-size:18px;margin:10px 0 28px}.invite-card .primary-button{width:100%;height:64px;margin-top:0;font-size:22px;border-radius:12px}.back-link{border:0;background:none;color:#61616b;margin-top:28px;font:inherit;font-size:20px;cursor:pointer}@media(max-width:640px){.top-nav{height:64px;padding:0 16px}.top-nav nav{gap:8px}.text-button,.outline-button{padding:0 12px;font-size:14px;height:36px}.brand{font-size:16px;gap:10px}.brand-mark{width:22px;height:30px}.content{min-height:calc(100vh - 64px);min-height:calc(100dvh - 64px);padding:24px 16px calc(24px + env(safe-area-inset-bottom))}.exchange-card{padding:22px 18px}.exchange-card h1{font-size:17px;margin-bottom:18px}.exchange-card input,.invite-card input{font-size:16px}.progress-card{padding:24px 18px}.progress-card h2{font-size:21px}.progress-copy{margin-bottom:22px}.order-info{grid-template-columns:1fr;gap:12px;padding:16px}.invite-wrap h2{font-size:32px}.invite-sub{font-size:16px;margin-bottom:26px}.invite-card{padding:24px 18px}.invite-card label{font-size:16px;margin-bottom:12px}.invite-card input{height:56px;padding:0 18px}.invite-card .hint{font-size:14px;margin:10px 0 22px}.invite-card .primary-button{height:52px;font-size:16px}.back-link{font-size:16px;margin-top:22px}.recharge-type{font-size:15px;margin-bottom:24px}.steps{flex-wrap:wrap;gap:8px;margin-bottom:28px}.steps b{width:24px}.step{width:28px;height:28px;font-size:14px}.step-label{font-size:13px}}
@media(max-width:380px){.brand{font-size:14px}.invite-wrap h2{font-size:26px}.step-label{font-size:12px}.steps b{width:16px}.order-info{padding:14px}}
:root{--proto-gray:#949499;--proto-line:#b8bac2;--proto-ink:#404042} 
.input-shell{position:relative}.input-shell input{width:100%;padding-right:72px!important}.paste-button{position:absolute;right:16px;top:50%;transform:translateY(-50%);border:0;background:none;color:var(--proto-ink);font:inherit;font-size:14px;cursor:pointer}.toast{position:fixed;left:50%;top:112px;transform:translateX(-50%);display:flex;align-items:center;gap:10px;padding:14px 20px;background:#404042;color:#fff;border-radius:10px;box-shadow:0 6px 18px rgba(0,0,0,.2);font-size:14px;z-index:10}.toast span:first-child{width:20px;height:20px;border-radius:50%;display:grid;place-items:center;background:#a7a7aa;color:#fff;font-size:12px}.text-button{background:var(--proto-gray)!important;color:#fff!important}.primary-button{background:#404042!important;color:#fff!important}.progress-track span{background:var(--proto-gray)}.status-pill{background:#ececee;color:#404042}.step.done,.step.active{background:var(--proto-gray)}
.toast.hidden{display:none}
.primary-button:disabled{background:#949499!important;color:#fff;cursor:not-allowed;box-shadow:none}.help-link{border:0;background:none;color:#d14343;text-decoration:underline;font:inherit;cursor:pointer}.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.28);display:grid;place-items:center;z-index:20}.modal-backdrop.hidden{display:none}.modal{width:min(420px,calc(100% - 32px));background:#fff;border-radius:12px;padding:28px;box-shadow:0 16px 40px rgba(0,0,0,.18);position:relative}.modal h3{margin:0 0 12px;font-size:20px}.modal p{color:#61616b;line-height:1.6;margin:0 0 24px}.modal .primary-button{width:100%}.modal-close{position:absolute;right:14px;top:10px;border:0;background:none;font-size:24px;color:#777;cursor:pointer}
@media(max-width:640px){.toast{top:84px;width:max-content;max-width:calc(100% - 32px);align-items:flex-start}}