:root{--ink:#183249;--paper:#f8f8f1;--teal:#20685d;--muted:#526578;--line:#b6c3c4;--error:#a63724}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei UI","PingFang SC",sans-serif;line-height:1.6}header,main,footer{max-width:1240px;margin:auto;padding:24px 40px}header{display:flex;align-items:center;gap:24px;border-bottom:1px solid var(--line)}.brand{color:var(--ink);font-weight:700;font-size:22px;text-decoration:none;margin-right:auto}.brand span{display:block;font-size:10px;letter-spacing:2px}header>span{font-size:13px;color:var(--muted)}.intro{padding:42px 0 32px}.eyebrow{font-size:12px;letter-spacing:2px;color:var(--teal)}h1{font-size:clamp(32px,5vw,56px);line-height:1.2;letter-spacing:-2px;margin:12px 0 20px;font-weight:600}.intro>p:last-child{color:var(--muted)}.columns{display:grid;grid-template-columns:1.05fr 1fr;gap:64px}.composer,aside{border-top:2px solid var(--ink);padding-top:16px}h2{font-size:20px;font-weight:600;margin:8px 0 28px}h2 span{color:var(--teal);font-size:13px;padding-right:12px}label{display:block;font-size:14px;font-weight:600;margin:20px 0 8px}input:not([type=checkbox]),textarea,select{font:inherit;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:4px;padding:12px;width:100%;min-height:48px}textarea{resize:vertical;min-height:164px}button{font:inherit;font-size:14px;color:var(--ink);background:transparent;border:1px solid var(--line);border-radius:4px;min-height:44px;padding:10px 16px;cursor:pointer}button:hover{background:#e5efec}button:disabled{cursor:wait;opacity:.55}.primary{color:#fff;background:var(--ink);border-color:var(--ink);width:100%;padding:16px;text-align:left;font-size:17px;margin-top:20px}.primary:hover{background:#24475f}.secondary{border-style:dashed;width:100%;margin-top:16px;text-align:left}.device{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line);padding:16px 0;margin:0}.device input{width:20px;height:20px;accent-color:var(--teal)}.device .meta{flex:1}.device small{display:block;font-size:12px;color:var(--muted);font-weight:400}.device button{font-size:12px;padding:8px}.count{text-align:right;color:var(--muted);font-size:12px}.chips{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.chips button{background:#e5efec;border:0;font-size:13px}.options{display:flex;align-items:center;justify-content:space-between;gap:24px}.options label{font-weight:400}.options select{width:90px;margin-left:12px}.note{font-size:12px;color:var(--muted);border-left:3px solid var(--teal);padding:10px 14px;background:#e5efec}.muted,.empty{color:var(--muted);font-size:13px}.empty{padding:24px 0}.receipt{border-bottom:1px solid var(--line);padding:24px 0}.receipt h3{font-size:20px;font-weight:500;word-break:break-all;margin:12px 0}.receipt p{margin:5px 0;font-size:12px;color:var(--muted)}.status{color:var(--teal);font-size:12px;letter-spacing:.5px}.status.bad{color:var(--error)}#message{position:sticky;bottom:16px;background:var(--paper);color:var(--error);padding:12px 0;min-height:24px}#login{max-width:420px}dialog{background:var(--paper);color:var(--ink);border:1px solid var(--line);padding:32px;width:min(480px,calc(100% - 32px));border-radius:4px}dialog::backdrop{background:#18324966}dialog h2{margin-bottom:10px}dialog p{font-size:13px}#close-bind{width:100%;margin-top:12px}#bind-message{color:var(--error)}footer{font-size:12px;color:var(--muted);margin-top:40px;border-top:1px solid var(--line)}:focus-visible{outline:3px solid var(--teal);outline-offset:3px}[hidden]{display:none!important}@media(max-width:760px){header,main,footer{padding:20px}.columns{grid-template-columns:1fr;gap:40px}.intro{padding:24px 0}.device{flex-wrap:wrap}header>span{display:none}}@media(prefers-reduced-motion:no-preference){button{transition:background .15s}}