:root{color-scheme:light;--paper:#faf9f6;--panel:#fff;--ink:#292b29;--muted:#777b74;--line:#e9e8e1;--accent:#556b59;--soft:#edf1eb;font:15px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--paper);color:var(--ink)}button,input,textarea,select{font:inherit}button,a,input,textarea,select{outline-offset:4px}button{cursor:pointer;border:0;background:none;color:inherit;min-height:44px;border-radius:8px;padding:8px 16px}button:disabled{opacity:.5;cursor:wait}a{color:inherit;text-decoration:none}.shell{display:grid;grid-template-columns:236px 1fr;min-height:100vh}.sidebar{padding:37px 22px 24px;border-right:1px solid var(--line);display:flex;flex-direction:column;background:#f5f4ef;position:sticky;top:0;height:100vh}.brand{display:flex;gap:12px;align-items:center;font-family:Georgia,serif;font-size:27px;line-height:1.3}.brand-mark{font-size:33px;font-style:italic;color:var(--accent);width:38px;text-align:center}.brand small{display:block;font-family:inherit;font-size:11px;letter-spacing:1px;color:var(--muted);margin-top:4px}.nav-label,.eyebrow{font-size:10px;letter-spacing:2px;color:var(--muted)}.nav-label{margin:56px 17px 12px}nav{display:grid;gap:7px}nav button{text-align:left;font-size:13px;display:flex;align-items:center;gap:12px}nav button span{font-size:19px;width:20px;color:var(--muted)}nav button[aria-current=page]{background:#e7ece3;color:#344d3a}nav button:hover,.quiet:hover{background:#e9ebe5}.sidebar-bottom{margin-top:auto;padding:22px 15px 0;font-size:11px;color:var(--muted)}.sidebar-bottom p{display:flex;gap:7px;align-items:center}.dot{height:6px;width:6px;border-radius:50%;background:#96a18d}main{width:min(100%,1110px);padding:43px 66px 45px}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:34px;gap:15px}.eyebrow{margin:0 0 9px}h1{font-size:28px;letter-spacing:.5px;font-weight:550;line-height:1.5;margin:0 0 8px}header p:last-child{margin:0;color:var(--muted);font-size:13px}h2{font-size:16px;font-weight:550;margin:0 0 7px}.quiet{font-size:12px;color:var(--muted);border:1px solid var(--line);background:transparent}.preview-banner{font-size:11px;color:#7e7051;border-bottom:1px solid #e8dec7;padding:0 0 12px;margin-bottom:23px}.notice{padding:10px 14px;background:var(--soft);font-size:13px;border-radius:7px}.notice.error{color:#8a493b;background:#f7eae4}.section-bar{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--muted);border-bottom:1px solid var(--line);padding:0 0 13px}.conversation{padding:25px 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