:root{--ink:#17202a;--muted:#69727d;--line:#dce1e5;--paper:#fff;--canvas:#f3f5f4;--accent:#0f766e;--accent-dark:#0a5853;--warm:#e9a23b;--danger:#b42318;--shadow:0 12px 35px rgba(20,32,42,.08)}*{box-sizing:border-box}body{margin:0;background:var(--canvas);color:var(--ink);font-family:Inter,"Noto Sans SC","Microsoft YaHei",sans-serif;min-height:100vh}.topbar{height:68px;background:#15232b;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1100px)/2));border-bottom:3px solid var(--warm)}.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;place-items:center;width:34px;height:34px;background:var(--warm);color:#15232b;font-weight:900;font-family:Georgia,serif}.brand strong{display:block;font-size:15px}.brand div span{display:block;color:#9ba7ad;font-size:9px;margin-top:2px}.admin-link{color:#d5e9e6;font-size:12px;text-decoration:none}.admin-link:hover{color:#fff}.login-card form{margin-top:22px}.user-shell,.admin-shell{width:min(1100px,calc(100% - 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