:root{--bg:#f5f7fb;--card:#fff;--text:#172238;--muted:#718096;--line:#e5eaf1;--primary:#3a7afe;--danger:#df4d4d;--green:#149447;--shadow:0 10px 28px rgba(19,34,56,.08)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:"Microsoft YaHei",system-ui,sans-serif}.login-screen{min-height:100vh;display:grid;place-items:center;padding:20px;background:linear-gradient(135deg,#eef3ff,#f8fafc)}.login-card{width:min(430px,100%);padding:34px 28px;background:#fff;border-radius:24px;box-shadow:var(--shadow);text-align:center}.brand-mark{width:58px;height:58px;margin:0 auto 16px;display:grid;place-items:center;border-radius:18px;background:linear-gradient(135deg,#3a7afe,#765cff);color:#fff;font-weight:800;font-size:26px}.login-card h1{margin:0;font-size:26px}.login-subtitle{color:var(--muted);margin:8px 0 26px}.login-form{text-align:left}.center{text-align:center}.error-text{color:var(--danger);min-height:20px;font-size:13px}.app-shell{min-height:100vh;padding-bottom:82px}.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;padding:18px max(20px,calc((100vw - 1180px)/2));background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.topbar h1{margin:0;font-size:22px}.topbar p{margin:4px 0 0}.content{max-width:1180px;margin:auto;padding:20px}.page-view{animation:fade .2s ease}@keyframes fade{from{opacity:.5;transform:translateY(4px)}to{opacity:1;transform:none}}h2{margin:0;font-size:20px}.section-heading,.panel-title,.balance-banner{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:16px}.panel{background:var(--card);border-radius:18px;padding:18px;margin-bottom:16px;box-shadow:var(--shadow)}.two-column{display:grid;grid-template-columns:.85fr 1.15fr;gap:16px}.field-label{display:block;color:var(--muted);font-size:13px;margin-bottom:7px}.input{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:12px;font:inherit;outline:none;background:#fff}.input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(58,122,254,.1)}.input:disabled{background:#f1f4f8;color:#8792a3}.textarea{resize:vertical}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.span-2{grid-column:span 2}.form-actions,.modal-actions{display:flex;gap:10px;flex-wrap:wrap}.btn{border:1px solid var(--line);border-radius:12px;padding:11px 16px;background:#fff;color:var(--text);font:inherit;cursor:pointer}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-secondary{background:#eff4ff;color:var(--primary);border-color:#dbe6ff}.btn-danger{background:#fff2f2;color:var(--danger);border-color:#ffd7d7}.btn-light{background:#f4f6fa}.btn-large{width:100%;padding:14px}.pill{padding:6px 10px;border-radius:999px;background:#e9f1ff;color:var(--primary);font-size:12px}.member-list{display:grid;gap:10px}.horizontal-list{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));margin-bottom:16px}.member-card{display:flex;align-items:center;justify-content:space-between;width:100%;padding:14px;border:1px solid var(--line);border-radius:14px;background:#fff;text-align:left;cursor:pointer;font:inherit}.member-card:hover,.member-card.active{border-color:#91b4ff;background:#f4f8ff}.member-card-main{display:grid;gap:5px}.member-card-main small{color:var(--muted);font-size:12px}.member-card-balance{color:var(--primary);font-weight:700}.hint,.empty{color:var(--muted);font-size:13px}.balance-banner{padding:16px;border-radius:14px;background:#f3f7ff;margin-bottom:10px}.balance-banner div{display:grid;gap:5px}.balance-banner strong{font-size:20px}.selected-hint{padding:12px;background:#f6f8fb;border-radius:12px}.table-wrap{overflow:auto}.table{width:100%;min-width:620px;border-collapse:collapse}.table th,.table td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left;font-size:13px}.table th{color:var(--muted)}.red{color:var(--danger);font-weight:700}.green{color:var(--green);font-weight:700}.floating-action{position:fixed;right:20px;bottom:92px;z-index:4;box-shadow:0 8px 22px rgba(58,122,254,.2)}.bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:6;display:flex;justify-content:center;gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.96);border-top:1px solid var(--line);box-shadow:0 -8px 20px rgba(19,34,56,.06)}.nav-item{border:0;background:transparent;color:var(--muted);padding:8px 14px;border-radius:12px;font:inherit;cursor:pointer;display:grid;gap:3px;justify-items:center;font-size:13px}.nav-item span{font-size:12px}.nav-item.active{background:#edf3ff;color:var(--primary)}.file-btn{display:inline-flex;align-items:center}.modal-backdrop{position:fixed;inset:0;z-index:20;display:grid;place-items:center;padding:20px;background:rgba(10,20,35,.45)}.modal-card{width:min(400px,100%);padding:22px;background:#fff;border-radius:18px;box-shadow:var(--shadow)}.modal-card h2{margin-bottom:8px}.modal-actions{justify-content:flex-end;margin-top:16px}.toast{position:fixed;left:50%;bottom:24px;z-index:30;transform:translateX(-50%);padding:12px 18px;border-radius:999px;background:#172238;color:#fff;box-shadow:var(--shadow)}[hidden]{display:none!important}@media(max-width:760px){.topbar{padding:16px}.content{padding:14px}.two-column{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.span-2{grid-column:auto}.section-heading{align-items:flex-start}.bottom-nav{justify-content:space-around}.nav-item{padding:7px 6px;font-size:11px}.floating-action{right:14px}.topbar h1{font-size:19px}.topbar .btn{padding:9px 10px;font-size:12px}}