:root{--bg: #f3f6f8;--panel: rgba(255, 255, 255, .92);--text: #18202a;--muted: #687789;--line: rgba(24, 32, 42, .1);--brand: #0f6b62;--brand-dark: #0a4f49;--income: #15803d;--expense: #c2410c;--amber: #b45309;--shadow: 0 18px 46px rgba(32, 48, 64, .08);color:var(--text);background:var(--bg);font-family:Microsoft YaHei,PingFang SC,Segoe UI,sans-serif;font-synthesis:none;text-rendering:geometricPrecision}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:linear-gradient(135deg,rgba(15,107,98,.1),transparent 34%),linear-gradient(180deg,#fbfcfd 0%,var(--bg) 48%,#edf2f5 100%)}button,input,select,textarea{font:inherit}button{cursor:pointer}.splash,.auth-page{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-card{width:min(430px,100%);display:grid;gap:16px;background:var(--panel);border:1px solid rgba(255,255,255,.82);border-radius:8px;padding:30px;box-shadow:var(--shadow)}.auth-card 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