:root{color-scheme:light;--paper:#f7f8f4;--ink:#223d34;--muted:#7a8880;--green:#28684f;--line:#e1e8df;--soft:#eaf0e7;--white:#fff;--danger:#a74235;font-family:"Segoe UI","Microsoft YaHei",system-ui,sans-serif;font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink)}[hidden]{display:none!important}button,input,textarea{font:inherit}button{cursor:pointer;color:inherit}button:disabled{cursor:wait;opacity:.5}button:focus-visible,a:focus-visible{outline:3px solid #9ec7ae;outline-offset:3px}button{transition:background .15s,transform .15s}button:active{transform:translateY(1px)}button,input,textarea{-webkit-tap-highlight-color:transparent}.app{display:flex;height:100dvh;min-height:380px}.sidebar{width:276px;flex-shrink:0;display:flex;flex-direction:column;border-right:1px solid var(--line);background:#f0f3eb;padding:28px 18px 16px}.side-brand{display:flex;align-items:center;gap:11px;padding:0 8px 26px}.side-brand strong{font-size:16px;letter-spacing:.3px}.side-brand span{display:block;margin-top:6px;color:var(--muted);font-size:10px;letter-spacing:1px}.brand-mark{display:grid;place-items:center;background:var(--green);color:#fff;width:56px;height:56px;border-radius:18px;font-size:29px;font-weight:600;box-shadow:0 6px 18px #285e4912}.brand-mark.small{width:39px;height:39px;border-radius:12px;font-size:21px}.new-thread{display:flex;align-items:center;gap:10px;width:100%;background:var(--green);color:#fff;border:0;border-radius:12px;padding:13px 15px;text-align:left;font-size:13px}.new-thread span{font-size:21px;font-weight:300}.new-thread kbd{margin-left:auto;opacity:.7;font-size:9px;letter-spacing:1px;font-family:inherit}.section-label{display:flex;align-items:center;justify-content:space-between;padding:23px 10px 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