:root{--ink:#172322;--ink2:#52605e;--teal:#0b7668;--teal2:#dff2ee;--line:#dfe8e6;--bg:#f5f8f7;--white:#fff;--amber:#a66100;--red:#bd2c2c;--shadow:0 12px 30px rgba(16,46,42,.08)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;letter-spacing:-.01em}button,input,select,textarea{font:inherit}.shell{min-height:100vh}.topbar{height:64px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 32px;position:sticky;top:0;z-index:20}.brand{display:flex;align-items:center;gap:12px;font-weight:750;cursor:pointer}.mark{width:30px;height:30px;border-radius:9px;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:13px}.nav{display:flex;gap:4px}.nav button,.mobile-nav button{border:0;background:transparent;padding:9px 12px;border-radius:8px;color:var(--ink2);cursor:pointer}.nav 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