:root{--bg: #f5f6f8;--card: #ffffff;--text: #1f2329;--text-2: #646a73;--border: #e5e7eb;--primary: #3370ff;--primary-hover: #2860e1;--danger: #d93026;--success: #2ea44f;--warning-bg: #fff7e6}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);font-size:14px}button{padding:8px 16px;border:none;border-radius:6px;font-size:14px;cursor:pointer;background:var(--primary);color:#fff;transition:background .15s}button:hover{background:var(--primary-hover)}button:disabled{opacity:.5;cursor:not-allowed}button.ghost{background:#fff;color:var(--primary);border:1px solid var(--primary)}button.ghost:hover{background:#f0f5ff}button.danger{background:var(--danger)}button.link{background:transparent;color:var(--primary);padding:4px 8px}input,select,textarea{padding:8px 10px;border:1px solid #d0d3d9;border-radius:6px;font-size:14px;font-family:inherit;background:#fff;color:var(--text);outline:none}input:focus,select:focus,textarea:focus{border-color:var(--primary)}.card{background:var(--card);border-radius:10px;padding:20px;box-shadow:0 1px 3px #0000000f;margin-bottom:16px}table{width:100%;border-collapse:collapse;font-size:13px}th,td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left}th{color:var(--text-2);font-weight:500;background:#fafbfc;white-space:nowrap}.tag{display:inline-block;padding:2px 10px;border-radius:10px;font-size:12px}.tag.ongoing{background:#e8f3ff;color:var(--primary)}.tag.done{background:#eafaea;color:var(--success)}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field label{font-size:13px;color:var(--text-2)}.field .required:after{content:" *";color:var(--danger)}.field-error{font-size:12px;color:var(--danger)}.form-error{color:var(--danger);font-size:13px;margin:8px 0}.form-success{color:var(--success);font-size:13px;margin:8px 0}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:#fff;border-radius:12px;padding:24px;width:440px;max-width:calc(100vw - 40px);max-height:85vh;overflow:auto}.modal h3{margin:0 0 18px;font-size:16px}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#eef2ff,#f5f6f8)}.auth-card{background:#fff;border-radius:14px;padding:36px 32px;width:360px;box-shadow:0 4px 24px #00000014}.auth-card h1{font-size:22px;margin:0 0 4px;text-align:center}.auth-card .sub{color:var(--text-2);font-size:13px;text-align:center;margin-bottom:24px}.auth-switch{text-align:center;font-size:13px;color:var(--text-2);margin-top:18px}.auth-switch a{color:var(--primary);text-decoration:none}.layout{min-height:100vh;display:flex;flex-direction:column}.topbar{background:#fff;border-bottom:1px solid var(--border);padding:0 24px;height:52px;display:flex;align-items:center;gap:24px}.topbar .brand{font-weight:700;font-size:16px;color:var(--primary)}.topbar nav{display:flex;gap:4px;flex:1}.topbar nav a{padding:6px 14px;border-radius:6px;color:var(--text-2);text-decoration:none;font-size:14px}.topbar nav a.active{background:#eef4ff;color:var(--primary);font-weight:500}.topbar .user{color:var(--text-2);font-size:13px;display:flex;gap:10px;align-items:center}.main{flex:1;padding:24px;max-width:960px;margin:0 auto;width:100%;box-sizing:border-box}.page-title{font-size:18px;font-weight:600;margin:0 0 16px}.empty{color:var(--text-2);text-align:center;padding:32px 0;font-size:14px}.muted{color:var(--text-2);font-size:13px}.inline-row{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap}.inline-row .field{margin-bottom:0}.toast{position:fixed;top:20px;left:50%;transform:translate(-50%);background:#1f2329;color:#fff;padding:10px 20px;border-radius:8px;font-size:14px;z-index:200;animation:fadeIn .2s}.toast.error{background:var(--danger)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}