:root{--bg: #0b0e14;--bg-soft: #10141d;--card: #161b26;--card-hover: #1b2130;--border: #232a3a;--text: #e8ecf3;--text-dim: #8b95a7;--accent: #00d4aa;--accent-dim: #00b894;--danger: #ff5c6c;--radius: 14px}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,PingFang SC,Hiragino Sans GB,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.5}.app{max-width:520px;margin:0 auto;padding:20px 16px 40px;min-height:100%}.header{display:flex;align-items:center;justify-content:space-between;padding:8px 0 20px}.brand{font-size:22px;font-weight:700;letter-spacing:.5px}.brand em{font-style:normal;color:var(--accent)}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:16px}.card h3{font-size:13px;font-weight:600;color:var(--text-dim);text-transform:uppercase;letter-spacing:.6px;margin-bottom:12px}.balance-value{font-size:34px;font-weight:700;letter-spacing:.5px}.balance-unit{font-size:15px;color:var(--text-dim);margin-left:6px;font-weight:500}.address-box{background:var(--bg-soft);border:1px solid var(--border);border-radius:10px;padding:12px 14px;font-family:SF Mono,Menlo,monospace;font-size:13px;word-break:break-all;color:var(--text);margin-bottom:12px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:14px;border:none;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer;transition:opacity .15s,transform .05s;color:#04120e;background:var(--accent)}.btn:active{transform:scale(.98);opacity:.9}.btn.ghost{background:var(--card);color:var(--text);border:1px solid var(--border)}.btn:disabled{opacity:.5;cursor:not-allowed}.hint{color:var(--text-dim);font-size:13px;text-align:center;margin-top:12px}.login-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:80vh;text-align:center}.login-title{font-size:26px;font-weight:700;margin-bottom:8px}.login-sub{color:var(--text-dim);margin-bottom:32px}.spinner{width:18px;height:18px;border:2px solid rgba(4,18,14,.3);border-top-color:#04120e;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error{color:var(--danger);font-size:13px;text-align:center;margin-top:12px}