:root{--bg: #f5f7fb;--panel: #ffffff;--line: #e6ebf2;--line-strong: #d7dee8;--text: #172033;--muted: #667085;--soft: #f0f5f8;--brand: #12a8b4;--brand-dark: #087d8a;--blue: #2563eb;--green: #16a34a;--amber: #d97706;--red: #dc2626;--purple: #7c3aed;--shadow: 0 16px 45px rgba(21, 32, 54, .08)}*{box-sizing:border-box}body{margin:0;color:var(--text);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}.admin-shell{display:grid;grid-template-columns:264px minmax(0,1fr);min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;background:#0f1d2b;color:#fff;padding:22px 16px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:12px;padding:4px 8px 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24px;font-size:24px;line-height:1.25}.login-card .field{gap:9px;margin:0 0 18px}.login-card .field span{font-size:15px;font-weight:700}.login-card .field-input{min-height:42px;border-radius:8px;padding:0 13px}.login-button{width:100%;min-height:42px;margin-top:4px}body.login-mode .admin-shell{display:block;min-height:100vh}body.login-mode .sidebar,body.login-mode .topbar{display:none}body.login-mode .main{min-height:100vh;padding:0}body.login-mode .view{min-height:100vh}.form-error{color:var(--red);background:#fff1f2;border:1px solid #fecdd3;border-radius:8px;padding:9px 10px;margin-bottom:12px;font-size:13px}.main{min-width:0;padding:22px 28px 36px}.topbar{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-bottom:22px}.topbar h1{margin:0;font-size:28px;line-height:1.2;letter-spacing:0}.breadcrumb{min-height:26px;display:flex;align-items:center;gap:7px;margin-bottom:5px;color:var(--muted);font-size:16px}.breadcrumb 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