:root{font:17px/1.55 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:#1b2b28;background:#f5f9f6;color-scheme:light;--green:#1b6b55}*{box-sizing:border-box}body{margin:0}button,.button{border:0;border-radius:14px;background:var(--green);color:#fff;padding:13px 18px;font:inherit;font-weight:650;cursor:pointer;min-height:48px;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}button:disabled{opacity:.45;cursor:default}.secondary{background:#edf4ef;color:var(--green)}.danger{background:#b53939;color:white}button:focus-visible,a:focus-visible{outline:3px solid #ef9a39;outline-offset:3px}h1,h2,p{margin:0 0 16px}h1{font-size:28px}h2{font-size:24px}input,textarea{display:block;width:100%;font:inherit;padding:13px;border:1px solid #aebfb6;border-radius:12px;background:#fff;color:#182b24;margin:8px 0 16px}label{font-weight:600}.lobby{max-width:740px;margin:auto;padding:calc(env(safe-area-inset-top) + 28px) 20px calc(env(safe-area-inset-bottom) + 28px)}.brand{display:flex;align-items:center;gap:16px;margin-bottom:28px}.brand p{color:#557164;font-size:15px;margin:0}.brand h1{margin:0}.card{background:#fff;border:1px solid #e0e9e3;border-radius:24px;padding:24px;margin:18px 0;box-shadow:0 8px 25px #164b2e06}.card button{margin:6px 8px 4px 0}.request{padding:16px 0;border-top:1px solid #e1eae4}.request p{margin-bottom:8px}.muted,footer{color:#5e7168;font-size:14px}.code{font-size:32px;letter-spacing:5px;font-weight:750;color:var(--green)}[hidden]{display:none!important}#assist{height:100dvh;height:var(--visible-height,100dvh);display:flex;flex-direction:column;max-width:1400px;margin:auto;background:#fff;padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom);overflow:hidden}.session-bar{display:flex;justify-content:space-between;align-items:center;padding:10px 18px;gap:12px;border-bottom:1px solid #e1eae4}.session-bar strong{font-size:19px;display:block}.session-bar span{color:#5c7066;font-size:13px}.session-bar button{font-size:15px;padding:9px 14px}.connection{padding:7px 18px;font-size:13px;display:flex;gap:12px;justify-content:space-between;color:#526b5e;flex-shrink:0}.screen-area{flex:1;min-height:100px;min-width:0;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#e9eeeb}canvas{display:block;touch-action:none;user-select:none;-webkit-user-select:none;outline:0;flex-shrink:0;box-shadow:0 0 0 1px #182b2410;transform-origin:center}#empty{position:absolute;pointer-events:none;text-align:center;max-width:80%;background:#fffef7ed;color:#526256;padding:20px;border-radius:18px}.toolbar{display:flex;gap:8px;justify-content:center;padding:10px 16px;flex-shrink:0;border-top:1px solid #e1eae4}.toolbar button{flex:1;max-width:180px;padding:10px 6px;font-size:16px}#composer{padding:10px 18px;border-top:1px solid #d9e5dd;flex-shrink:0;font-size:14px}#composer textarea{margin:6px 0;resize:none}#composer div{display:flex;gap:8px;flex-wrap:wrap}#composer button{font-size:14px;padding:8px 12px;min-height:42px}#operation-status{font-size:13px;padding:0 18px;margin:0;background:#fff6e8;color:#785920;flex-shrink:0;max-height:62px;overflow:auto}#lobby-status{white-space:pre-wrap}@media(min-width:900px){.screen-area{margin:0 18px;border-radius:16px}.session-bar{padding:16px 24px}.toolbar{padding:12px 20px}#composer{max-width:900px;width:100%;margin:auto}}@media(max-width:400px){.connection{flex-direction:column;gap:0}.toolbar{gap:5px;padding:8px}.toolbar button{font-size:14px}.card{padding:20px}.session-bar{padding:9px 12px}}