:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#1c2942;background:#f5f7fb;font-synthesis:none;font-size:16px;--blue:#345bea;--border:#e6eaf2;--muted:#778196}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button{transition:background .15s,box-shadow .15s}button:disabled{opacity:.55;cursor:wait}a{color:var(--blue)}button:focus-visible,a:focus-visible{outline:3px solid #aebfff;outline-offset:3px}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px #345bea14}[hidden]{display:none!important}.shell{display:flex;min-height:100vh}.sidebar{width:242px;flex-shrink:0;background:#fff;border-right:1px solid var(--border);padding:32px 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12px;min-width:0}input::placeholder,textarea::placeholder{color:#a6afbe}label input,label select,label textarea{width:100%;margin-top:9px;font-size:14px;font-weight:400}textarea{resize:vertical;line-height:1.65}small{font-size:12px;color:#9aa4b5;font-weight:400;line-height:1.6}label small{display:block;margin-top:6px}.required{color:#e37272}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:17px}.preview{background:#f5f7fb;padding:29px 23px;border-left:1px solid var(--border)}.preview h3{font-size:14px;margin:0}.preview>.muted{font-size:12px;margin:8px 0 23px}.message{background:#fff;border:1px solid #e1e6ee;border-radius:3px 12px 12px;padding:18px;margin-bottom:15px;box-shadow:0 4px 10px #24365804;word-break:break-word;font-size:14px;line-height:1.8;min-height:160px}.message p{white-space:pre-wrap;margin:0 0 12px}.message img{max-width:100%;max-height:220px;border-radius:7px;display:block;margin-bottom:16px;object-fit:contain}.preview-link{color:#4369b7;white-space:pre-wrap}.dialog-footer{position:sticky;bottom:0;background:#fff;border-top:1px solid var(--border);padding:17px 27px;display:flex;justify-content:space-between;align-items:center;gap:10px}.dialog-footer>span{font-size:12px;color:#9aa5b6}.dialog-footer>div{display:flex;gap:10px}.error{color:#c54747;font-size:13px;line-height:1.6}.error:empty{display:none}.danger{color:#c87474}.confirm{padding:28px;width:min(430px,calc(100% - 32px))}.confirm p{line-height:1.6;overflow-wrap:anywhere}.confirm-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:25px}.danger-button{background:#c94747;color:#fff}.toast{position:fixed;bottom:32px;left:50%;transform:translateX(-50%);background:#243553;color:#fff;padding:13px 22px;border-radius:9px;box-shadow:0 6px 24px 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@media(prefers-reduced-motion:reduce){*{transition:none!important}}
/* Message-first editor: preserve Unicode Emoji and whitespace. */
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