:root{--bg-primary: #181818;--bg-card: #222222;--bg-elevated: #2a2a2a;--accent: #00e676;--accent-dim: #00c853;--text-primary: #f0f0f0;--text-muted: #9e9e9e;--border: #3a3a3a;--danger: #ff5252}*{box-sizing:border-box}html,body,#app{margin:0;min-height:100%;background:var(--bg-primary);color:var(--text-primary);font-family:Segoe UI,system-ui,sans-serif}a{color:var(--accent)}.page{max-width:640px;margin:0 auto;width:100%}.app-message-center{top:50%!important;left:50%!important;right:auto!important;bottom:auto!important;transform:translate(-50%,-50%)!important;align-items:center!important;pointer-events:none}.app-message-center .n-message{pointer-events:auto;max-width:min(92vw,360px);text-align:center;justify-content:center}.card-panel{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:16px}.price-up{color:var(--accent)}.price-down{color:var(--danger)}