:root{--primary: #1d4ed8;--primary-dark: #1e40af;--primary-light: #eef2ff;--success: #16a34a;--success-light: #f0fdf4;--danger: #dc2626;--danger-light: #fef2f2;--warning: #d97706;--warning-light: #fffbeb;--text: #111827;--text-2: #4b5563;--text-3: #9ca3af;--bg: #f5f7fb;--card: #ffffff;--border: #e5e7eb;--radius: 12px;--shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .04);--sidebar-w: 232px;--topbar-h: 60px}*{box-sizing:border-box;margin:0;padding:0}html,body,#app{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}button{font-family:inherit;cursor:pointer}input,select,textarea{font-family:inherit;font-size:14px}.app-shell{display:flex;min-height:100%}.sidebar{width:var(--sidebar-w);background:#0f172a;color:#cbd5e1;position:fixed;top:0;bottom:0;left:0;display:flex;flex-direction:column;z-index:100;transition:transform .25s ease}.sidebar .brand{display:flex;align-items:center;gap:10px;padding:18px 20px;font-size:18px;font-weight:700;color:#fff;border-bottom:1px solid rgba(255,255,255,.08)}.sidebar .brand .logo{width:34px;height:34px;border-radius:9px;background:#fff;object-fit:contain;padding:3px}.nav{flex:1;padding:12px 10px;overflow-y:auto}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;margin-bottom:2px;border-radius:8px;color:#cbd5e1;font-size:14px;cursor:pointer;transition:background .15s}.nav-item:hover{background:#ffffff0f;color:#fff}.nav-item.active{background:#3b82f62e;color:#fff;font-weight:600}.nav-item .ico{width:18px;text-align:center}.sidebar .foot{padding:14px 20px;border-top:1px solid rgba(255,255,255,.08);font-size:12px;color:#64748b}.main{flex:1;margin-left:var(--sidebar-w);display:flex;flex-direction:column;min-width:0}.topbar{height:var(--topbar-h);background:var(--card);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:50}.topbar .page-title{font-size:17px;font-weight:700}.topbar .user-box{display:flex;align-items:center;gap:10px}.avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,#3b82f6,#8b5cf6);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}.topbar .menu-btn{display:none;background:none;border:0;font-size:20px;color:var(--text-2)}.content{padding:24px;max-width:1200px;width:100%;margin:0 auto;flex:1}.mobile-nav{display:none;position:fixed;bottom:0;left:0;right:0;background:var(--card);border-top:1px solid var(--border);z-index:100;padding-bottom:env(safe-area-inset-bottom)}.mobile-nav a{flex:1;display:flex;flex-direction:column;align-items:center;padding:8px 0 6px;font-size:11px;color:var(--text-3);gap:2px}.mobile-nav a.active{color:var(--primary)}.mobile-nav a .ico{font-size:18px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.card+.card{margin-top:16px}.card-title{font-size:16px;font-weight:700;margin-bottom:14px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border-radius:8px;border:1px solid transparent;font-size:14px;font-weight:600;transition:all .15s;white-space:nowrap}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-outline{background:#fff;border-color:var(--border);color:var(--text-2)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}.btn-danger{background:var(--danger);color:#fff}.btn-danger-outline{background:#fff;border-color:#fecaca;color:var(--danger)}.btn-success{background:var(--success);color:#fff}.btn-ghost{background:transparent;color:var(--text-2)}.btn-sm{padding:5px 12px;font-size:13px}.btn-block{width:100%}.btn:disabled{opacity:.5;cursor:not-allowed}.input,.select,.textarea{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:8px;background:#fff;outline:none;transition:border .15s,box-shadow .15s}.input:focus,.select:focus,.textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #1d4ed81f}.textarea{resize:vertical;min-height:72px}.label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px;font-weight:600}.form-row{margin-bottom:14px}.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600}.badge-draft{background:#f1f5f9;color:#475569}.badge-signing{background:var(--warning-light);color:var(--warning)}.badge-signed{background:var(--success-light);color:var(--success)}.badge-rejected{background:var(--danger-light);color:var(--danger)}.badge-cancelled,.badge-expired{background:#f1f5f9;color:#94a3b8}.badge-pending{background:var(--warning-light);color:var(--warning)}.badge-ok{background:var(--success-light);color:var(--success)}.badge-info{background:var(--primary-light);color:var(--primary)}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--border);font-size:13.5px}.table th{color:var(--text-3);font-weight:600;background:#fafbfc;white-space:nowrap}.table tbody tr:hover{background:#f8fafc}.table .ops{display:flex;gap:6px;flex-wrap:wrap}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px}.stat-card .num{font-size:26px;font-weight:800;margin-top:4px}.stat-card .lbl{color:var(--text-3);font-size:13px}.empty{text-align:center;color:var(--text-3);padding:48px 0;font-size:14px}.empty .big{font-size:40px;margin-bottom:10px}.toast-wrap{position:fixed;top:20px;left:50%;transform:translate(-50%);z-index:999;display:flex;flex-direction:column;gap:8px}.toast{background:#111827;color:#fff;padding:10px 20px;border-radius:8px;font-size:14px;box-shadow:0 4px 16px #0003;animation:toastIn .2s ease}.toast.err{background:var(--danger)}@keyframes toastIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}.modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a80;display:flex;align-items:center;justify-content:center;z-index:200;padding:16px}.modal{background:#fff;border-radius:14px;width:100%;max-width:520px;max-height:86vh;overflow-y:auto;padding:22px}.modal-title{font-size:16px;font-weight:700;margin-bottom:14px}.modal .foot{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(#080c1c9e,#080c1cb8),url(/login-bg.jpg) center/cover no-repeat fixed;padding:16px}.auth-card{background:#fff;border-radius:16px;padding:32px;width:100%;max-width:400px;box-shadow:0 20px 60px #00000040}.auth-card .brand2{display:flex;align-items:center;gap:10px;margin-bottom:24px}.auth-card .brand2 .logo{width:44px;height:44px;border-radius:10px;background:#fff;object-fit:contain;padding:4px;box-shadow:0 2px 8px #0f172a14}.auth-card h1{font-size:22px;font-weight:800}.auth-card .sub{color:var(--text-3);font-size:13px;margin:4px 0 22px}.auth-tabs{display:flex;gap:6px;background:#f1f5f9;border-radius:10px;padding:4px;margin-bottom:18px}.auth-tabs .tab{flex:1;border:0;background:transparent;border-radius:8px;padding:8px 0;font-size:14px;color:var(--text-3);cursor:pointer;transition:all .15s}.auth-tabs .tab.on{background:#fff;color:var(--primary);font-weight:600;box-shadow:0 1px 4px #0f172a1a}.code-row{display:flex;gap:8px}.code-row .input{flex:1}.code-row .btn{white-space:nowrap}.sign-layout{display:grid;grid-template-columns:1fr 300px;gap:16px;align-items:start}.pdf-wrap{display:flex;flex-direction:column;gap:14px;align-items:center}.pdf-page-box{position:relative;background:#fff;box-shadow:var(--shadow)}.pdf-page-box canvas{display:block}.pos-item{position:absolute;border:2px dashed var(--primary);border-radius:4px;display:flex;align-items:center;justify-content:center;cursor:move;touch-action:none;background:#1d4ed80d;overflow:hidden}.pos-item img{max-width:100%;max-height:100%;pointer-events:none;-webkit-user-select:none;user-select:none}.pos-item .del{position:absolute;top:-10px;right:-10px;width:20px;height:20px;background:var(--danger);color:#fff;border-radius:50%;font-size:12px;display:none;align-items:center;justify-content:center;cursor:pointer}.pos-item:hover .del{display:flex}.sig-panel{position:sticky;top:76px;display:flex;flex-direction:column;gap:12px;max-height:calc(100vh - 96px);overflow-y:auto}.sig-item{border:1px solid var(--border);border-radius:10px;padding:10px;display:flex;align-items:center;gap:10px;cursor:pointer;transition:all .15s}.sig-item:hover,.sig-item.selected{border-color:var(--primary);background:var(--primary-light)}.sig-item img{width:52px;height:36px;object-fit:contain}.sig-item .name{font-size:13px;font-weight:600}.sig-item .kind{font-size:11px;color:var(--text-3)}canvas.sig-pad{width:100%;height:170px;border:1px dashed var(--border);border-radius:8px;background:#fff;touch-action:none}@media (max-width: 960px){.sign-layout{grid-template-columns:1fr}.sig-panel{position:static;max-height:none}}@media (max-width: 768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0);box-shadow:0 0 0 999px #0006}.main{margin-left:0}.topbar{padding:0 14px}.topbar .menu-btn{display:block}.topbar .page-title{font-size:15px}.content{padding:14px}.mobile-nav{display:flex}.main{padding-bottom:60px}.table-responsive{overflow-x:auto}.table th,.table td{padding:9px 8px;white-space:nowrap}.card{padding:14px}.auth-card{padding:24px}}