:root{--ink:#17211b;--muted:#66736b;--line:#dfe5dc;--paper:#fbfaf6;--panel:#ffffff;--wash:#eef4ee;--green:#26734d;--green-dark:#145838;--red:#c84545;--yellow:#d9a72f;--blue:#2f6f8f;--shadow:0 18px 45px rgba(23,33,27,.08)}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Microsoft YaHei,PingFang SC,Segoe UI,Arial,sans-serif;letter-spacing:0}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}p{line-height:1.7}.shell{display:grid;grid-template-columns:248px minmax(0,1fr);min-height:100vh}.sidebar{position:-webkit-sticky;position:sticky;top:0;height:100vh;padding:24px 18px;background:#16261d;color:#eef6ef;display:flex;flex-direction:column;gap:24px}.brand{display:grid;grid-gap:8px;gap:8px}.brand-mark{width:42px;height:42px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.22);background:#e7f1e5;color:#16261d;border-radius:8px;font-weight:800}.brand 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