:root{--bg-base: #f8fafc;--bg-surface: #f1f5f9;--bg-card: #ffffff;--bg-card-hover: #f1f5f9;--border-default: #e2e8f0;--border-accent: rgba(13, 148, 136, .3);--text-primary: #1e293b;--text-secondary: #64748b;--accent: #0d9488;--accent-hover: #0f766e;--accent-contrast: #ffffff;--accent-bg: rgba(13, 148, 136, .08);--accent-glow: 0 2px 8px rgba(13, 148, 136, .12);--accent-glow-hover: 0 2px 12px rgba(13, 148, 136, .2);--success: #059669;--success-bg: rgba(5, 150, 105, .08);--warning-bg: rgba(245, 158, 11, .08);--warning-text: #b45309;--warning-border: rgba(245, 158, 11, .2);--error-bg: rgba(239, 68, 68, .08);--error-text: #dc2626;--radius: 12px;--radius-sm: 8px;--radius-full: 9999px;--shadow-card: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04)}[data-theme=dark]{--bg-base: #07080d;--bg-surface: #0e1016;--bg-card: #131722;--bg-card-hover: #1a2035;--border-default: #1e2438;--border-accent: rgba(45, 212, 191, .3);--text-primary: #eef0f4;--text-secondary: #7a849e;--accent: #2dd4bf;--accent-hover: #3ee8d1;--accent-contrast: #07080d;--accent-bg: rgba(45, 212, 191, .1);--accent-glow: 0 0 24px rgba(45, 212, 191, .25);--accent-glow-hover: 0 0 32px rgba(45, 212, 191, .4);--success: #10b981;--success-bg: rgba(16, 185, 129, .1);--warning-bg: rgba(245, 158, 11, .1);--warning-text: #f59e0b;--warning-border: rgba(245, 158, 11, .3);--error-bg: rgba(239, 68, 68, .1);--error-text: #ef4444;--shadow-card: 0 1px 3px rgba(0, 0, 0, .3)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-base);color:var(--text-primary);-webkit-font-smoothing:antialiased;overflow:hidden}.app{max-width:400px;margin:0 auto}.screen{display:flex;flex-direction:column;height:100vh;height:100dvh;padding:16px}.screen-content{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.screen-footer{flex-shrink:0;padding-top:12px}.center-content{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.title{font-size:20px;font-weight:700;margin-bottom:16px}.label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:8px}.card{background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--radius);padding:16px;margin-bottom:12px;box-shadow:var(--shadow-card)}.pairs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}.pair-btn{padding:8px 14px;border:1px solid var(--border-default);border-radius:var(--radius-full);background:var(--bg-card);color:var(--text-secondary);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s;box-shadow:var(--shadow-card)}.pair-btn.active{background:var(--accent-bg);color:var(--accent);border-color:var(--accent);box-shadow:var(--accent-glow)}.input-wrap{margin-bottom:12px}input{width:100%;padding:14px 16px;font-size:18px;font-weight:500;border:1px solid var(--border-default);border-radius:var(--radius);background:var(--bg-card);color:var(--text-primary);outline:none;transition:border-color .15s;box-shadow:var(--shadow-card)}input:focus{border-color:var(--accent)}input::placeholder{color:var(--text-secondary);font-weight:400}.result{background:var(--bg-card);border:1px solid var(--border-default);border-left:3px solid var(--accent);border-radius:var(--radius);padding:14px 16px;margin-bottom:12px;box-shadow:var(--shadow-card)}.rate-detail{display:flex;justify-content:space-between;align-items:center;padding:4px 0}.rate-label{font-size:13px;color:var(--text-secondary)}.rate-value{font-size:14px;font-weight:500;color:var(--text-primary)}.rate-main .rate-value{font-weight:700;color:var(--accent)}.result .rate{font-size:13px;color:var(--text-secondary);line-height:1.6}.result .total{font-size:18px;font-weight:600;margin-top:8px;padding-top:8px;border-top:1px solid var(--border-default);color:var(--accent)}.tier-badge{background:var(--warning-bg);color:var(--warning-text);border:1px solid var(--warning-border);border-radius:var(--radius-sm);padding:10px 14px;font-size:13px;font-weight:500;margin-bottom:12px;text-align:center}.btn-primary{display:block;width:100%;padding:14px;font-size:16px;font-weight:600;border:none;border-radius:var(--radius);background:var(--accent);color:var(--accent-contrast);cursor:pointer;transition:all .15s;box-shadow:var(--accent-glow)}.btn-primary:hover{background:var(--accent-hover);box-shadow:var(--accent-glow-hover)}.btn-primary:disabled{opacity:.35;cursor:not-allowed;box-shadow:none}.btn-secondary{padding:14px 20px;font-size:16px;font-weight:500;border:1px solid var(--border-default);border-radius:var(--radius);background:var(--bg-card);color:var(--text-primary);cursor:pointer;transition:all .15s}.btn-secondary:hover{border-color:var(--accent);background:var(--bg-card-hover)}.buttons{display:flex;gap:8px}.buttons .btn-primary{flex:1}.summary{background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--radius);padding:14px 16px;margin-bottom:12px;font-size:14px;line-height:1.8;box-shadow:var(--shadow-card)}.summary .summary-label{color:var(--text-secondary);font-size:13px}.summary .summary-value{font-weight:600}.methods{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.method-btn{padding:14px 16px;text-align:left;border:1px solid var(--border-default);border-radius:var(--radius);background:var(--bg-card);color:var(--text-primary);font-size:14px;font-weight:500;cursor:pointer;transition:all .15s;box-shadow:var(--shadow-card)}.method-btn.active{border-color:var(--accent);background:var(--accent-bg);color:var(--accent);box-shadow:var(--accent-glow)}.success-icon{width:72px;height:72px;border-radius:50%;background:var(--success-bg);display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:700;color:var(--success);margin-bottom:20px}.success-text{color:var(--text-secondary);font-size:15px;line-height:1.5;margin-bottom:20px}.error-icon{width:72px;height:72px;border-radius:50%;background:var(--error-bg);display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:700;color:var(--error-text);margin-bottom:20px}.error-text{color:var(--text-secondary);font-size:15px;line-height:1.5;margin-bottom:24px}.spinner{width:40px;height:40px;border:3px solid var(--border-default);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}