:root{--bg: #f2f3f5;--card: #ffffff;--text: #1f1f1f;--muted: #8a8a8a;--primary: #3b82f6;--income: #fa5151;--expense: #2b2b2b;--border: #ececec;--radius: 14px;--shadow: 0 1px 3px rgba(0, 0, 0, .06)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.app{max-width:480px;margin:0 auto;min-height:100vh;background:var(--bg);padding-top:env(safe-area-inset-top);padding-bottom:calc(32px + env(safe-area-inset-bottom))}.top{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:8px;background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;padding:14px 16px;box-shadow:var(--shadow)}.brand{flex:1;font-size:18px;font-weight:600;letter-spacing:.5px}.header-btn{margin-left:auto;background:#fff3;color:#fff;padding:6px 12px;min-height:34px;font-size:14px;font-weight:600}.header-btn:active{background:#ffffff59}.role-badge{background:#ffffff38;color:#fff;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600}.auth-error{color:#d92b2b;background:#ffeaea;padding:10px 12px;border-radius:10px;font-size:14px;margin-bottom:12px}.auth-info{color:#2563eb;background:#eaf1ff;padding:10px 12px;border-radius:10px;font-size:14px;margin-bottom:12px}.link{display:block;width:100%;margin-top:10px;background:none;border:none;color:var(--primary);font-size:14px;font-weight:600;text-decoration:underline;text-align:center;cursor:pointer;padding:8px 0}.link:active{opacity:.7}.invite-box{margin-top:8px}.invite-code{font-family:ui-monospace,Menlo,Consolas,monospace;background:#f0f1f3;color:#1f1f1f;padding:10px 12px;border-radius:10px;font-size:15px;letter-spacing:1px;word-break:break-all;margin-bottom:10px}.content{padding:12px}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px;margin-bottom:12px}.summary{display:flex;justify-content:space-between;text-align:center}.sum-item{flex:1;display:flex;flex-direction:column;gap:4px}.sum-label{font-size:13px;color:var(--muted)}.sum-val{font-size:18px;font-weight:700}.sum-val.income{color:var(--income)}.sum-val.expense{color:var(--expense)}.sum-val.balance{color:var(--primary)}.month-nav{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.month-label{font-size:16px;font-weight:600}.ghost.round{width:38px;height:38px;border-radius:50%;font-size:22px;line-height:1;padding:0}button{font-family:inherit;cursor:pointer;border:none;border-radius:10px;font-size:15px}.primary{background:var(--primary);color:#fff;padding:12px 16px;min-height:48px;font-weight:600;font-size:16px;flex:1}.primary:active{opacity:.85}.ghost{background:#f0f1f3;color:#333;padding:10px 14px;font-weight:500}.ghost:not(.round){min-height:44px}.ghost:active{background:#e4e6e9}.btn-label{display:inline-flex;align-items:center;justify-content:center}.form .type-toggle{display:flex;background:#f0f1f3;border-radius:10px;padding:4px;margin-bottom:12px}.tg{flex:1;background:transparent;padding:10px;font-weight:600;color:#555;border-radius:8px}.tg.active.expense{background:#fff;color:var(--expense);box-shadow:var(--shadow)}.tg.active.income{background:#fff;color:var(--income);box-shadow:var(--shadow)}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}.field>span{font-size:13px;color:var(--muted)}.field input{font-family:inherit;font-size:16px;padding:11px 12px;border:1px solid var(--border);border-radius:10px;background:#fafafa;color:var(--text);outline:none}.field input:focus{border-color:var(--primary);background:#fff}.cat-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}.cat-chip{padding:9px 14px;min-height:38px;background:#f0f1f3;color:#444;border-radius:999px;font-size:14px;font-weight:500;line-height:1}.cat-chip.active{background:var(--primary);color:#fff}.cat-chip:active{transform:scale(.96)}.field-row{display:flex;gap:12px}.amount-field{flex:1}.date-field{width:150px}.form-actions{display:flex;gap:10px;margin-top:4px}.list{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.tx-row{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--border)}.tx-row:last-child{border-bottom:none}.tx-row:active{background:#f7f8fa}.tx-left{display:flex;flex-direction:column;gap:3px;min-width:0}.tx-cat{font-size:15px;font-weight:600}.tx-sub{font-size:12px;color:var(--muted)}.tx-right{display:flex;align-items:center;gap:8px}.tx-amt{font-size:16px;font-weight:700}.tx-amt.income{color:var(--income)}.tx-amt.expense{color:var(--expense)}.del{width:34px;height:34px;border-radius:50%;background:#f0f1f3;color:#999;font-size:20px;line-height:1;padding:0}.del:active{background:#e4e6e9;color:#666}.empty{text-align:center;color:var(--muted);padding:40px 16px;font-size:14px}.backup-title{font-size:15px;font-weight:600;margin-bottom:4px}.backup-desc{font-size:12px;color:var(--muted);margin-bottom:12px}.backup-btns{display:flex;gap:10px}.backup-btns .ghost{flex:1;text-align:center}