:root{--bg-0: #070b16;--bg-1: #0b1220;--bg-2: #0f172a;--bg-3: #111827;--border: rgba(148, 163, 184, .14);--border-strong: rgba(148, 163, 184, .28);--text: #e5e7eb;--text-muted: #94a3b8;--text-dim: #64748b;--primary-from: #6366f1;--primary-to: #ec4899;--primary-soft: rgba(99, 102, 241, .16);--success: #22c55e;--danger: #f87171;--warning: #fbbf24;--accent: #a5b4fc;--shadow-lg: 0 14px 40px -12px rgba(99, 102, 241, .35);--radius-sm: 10px;--radius: 14px;--radius-lg: 18px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-left: env(safe-area-inset-left, 0px);--safe-right: env(safe-area-inset-right, 0px);color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg-0);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%;text-rendering:optimizeLegibility;overscroll-behavior-y:none;min-height:100vh}body{background:radial-gradient(1200px 500px at 10% -10%,rgba(99,102,241,.18),transparent 60%),radial-gradient(900px 400px at 100% 0%,rgba(236,72,153,.12),transparent 60%),linear-gradient(180deg,#070b16,#0b1220 60%,#0d1426);background-attachment:fixed}input,button,textarea,select{font:inherit;color:inherit}button{cursor:pointer;-webkit-user-select:none;user-select:none}button:disabled{cursor:not-allowed}a{color:var(--accent);text-decoration:none}code{font-family:ui-monospace,SFMono-Regular,SF Mono,Menlo,Consolas,monospace;font-size:.92em}.app{min-height:100vh;padding:calc(var(--safe-top) + 16px) calc(var(--safe-right) + 16px) calc(var(--safe-bottom) + 120px) calc(var(--safe-left) + 16px);max-width:560px;margin:0 auto}.header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.brand{display:flex;align-items:center;gap:10px;min-width:0}.brand-logo{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--primary-from),var(--primary-to));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:16px;box-shadow:var(--shadow-lg);flex-shrink:0;object-fit:cover}.brand-title{font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brand-sub{font-size:11px;color:var(--text-dim);line-height:1.2}.banner{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#fbbf241a;border:1px solid rgba(251,191,36,.35);color:var(--warning);padding:10px 12px;border-radius:var(--radius);font-size:13px;margin-bottom:12px}.banner.danger{background:#f8717114;border-color:#f8717159;color:var(--danger)}.banner-title{font-weight:600}.banner-sub{font-size:11px;opacity:.8;margin-top:2px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.card{background:linear-gradient(180deg,#ffffff08,#ffffff03);border:1px solid var(--border);border-radius:var(--radius);padding:14px;min-width:0}.card.hero{background:linear-gradient(135deg,#6366f12e,#ec48991a);border-color:#6366f159;box-shadow:var(--shadow-lg)}.stat-label{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}.stat-value{font-size:20px;font-weight:700;margin-top:4px;line-height:1.2;word-break:break-all}.stat-sub{font-size:11px;color:var(--text-dim);margin-top:4px}.section{background:#0f172aa6;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px;margin-top:16px}.section-title{font-size:14px;font-weight:600;margin:0 0 10px;display:flex;align-items:center;gap:8px}.row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:6px 0;font-size:13px;color:var(--text-muted)}.row-value{color:var(--text);font-weight:500;text-align:right;min-width:0;word-break:break-all}.address-pill{display:inline-flex;align-items:center;gap:6px;padding:4px 8px;border-radius:999px;background:#94a3b81a;border:1px solid var(--border);font-size:12px;max-width:100%}.icon-btn{background:#94a3b81a;border:1px solid var(--border);border-radius:8px;width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;padding:0;color:var(--text-muted)}.icon-btn:active{transform:scale(.94);background:#94a3b82e}.amount-wrap{background:var(--bg-1);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px;transition:border-color .15s ease}.amount-wrap:focus-within{border-color:#6366f18c}.amount-wrap.invalid{border-color:#f8717199}.amount-top{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--text-muted);margin-bottom:6px}.amount-inner{display:flex;align-items:center;gap:8px}.amount-input{flex:1;min-width:0;background:transparent;border:none;outline:none;font-size:26px;font-weight:700;letter-spacing:-.01em;color:var(--text);width:100%;padding:0;-webkit-appearance:none;appearance:none;-moz-appearance:textfield}.amount-input::-webkit-outer-spin-button,.amount-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.amount-symbol{font-size:14px;font-weight:600;color:var(--text-muted);white-space:nowrap}.step-btn{flex-shrink:0;width:36px;height:36px;border-radius:10px;border:1px solid var(--border-strong);background:#94a3b814;font-size:18px;font-weight:700;color:var(--text);display:flex;align-items:center;justify-content:center;padding:0}.step-btn:active:not(:disabled){transform:scale(.94)}.step-btn:disabled{opacity:.4}.quick-amounts{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}.chip{flex:1 1 0;min-width:56px;border:1px solid var(--border-strong);background:#94a3b80f;color:var(--text);border-radius:999px;padding:8px 10px;font-size:13px;font-weight:500;text-align:center}.chip:active{transform:scale(.97);background:var(--primary-soft);border-color:#6366f18c}.chip.active{background:var(--primary-soft);border-color:#6366f18c;color:var(--accent)}.error-text{font-size:12px;color:var(--danger);margin-top:8px}.hint-text{font-size:12px;color:var(--text-dim);margin-top:8px;line-height:1.5}.btn{min-height:48px;border-radius:12px;border:none;padding:0 18px;font-size:15px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform .08s ease,opacity .15s ease,background .15s ease;white-space:nowrap}.btn:active:not(:disabled){transform:scale(.98)}.btn:disabled{opacity:.5}.btn-primary{background:linear-gradient(90deg,var(--primary-from),var(--primary-to));color:#fff;box-shadow:var(--shadow-lg)}.btn-primary:disabled{box-shadow:none;background:#6366f14d}.btn-secondary{background:#94a3b81f;color:var(--text);border:1px solid var(--border-strong)}.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-block{width:100%}.btn-row{display:flex;gap:10px;margin-top:10px}.action-bar{position:fixed;left:0;right:0;bottom:0;padding:12px calc(var(--safe-right) + 16px) calc(var(--safe-bottom) + 12px) calc(var(--safe-left) + 16px);background:linear-gradient(180deg,#070b1600,#070b16d9 30%,#070b16f7);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);z-index:50}.action-bar-inner{max-width:560px;margin:0 auto;display:flex;gap:10px}.toast-wrap{position:fixed;left:50%;top:calc(var(--safe-top) + 12px);transform:translate(-50%);display:flex;flex-direction:column;gap:8px;z-index:60;pointer-events:none;width:min(92vw,520px)}.toast{pointer-events:auto;background:#111827f5;border:1px solid var(--border-strong);border-radius:12px;padding:12px 14px;display:flex;gap:10px;align-items:flex-start;font-size:13px;line-height:1.45;box-shadow:0 12px 28px #0006;animation:toast-in .18s ease;overflow:hidden}.toast-dot{width:8px;height:8px;border-radius:50%;margin-top:6px;flex-shrink:0}.toast.info .toast-dot{background:var(--accent)}.toast.success .toast-dot{background:var(--success)}.toast.error .toast-dot{background:var(--danger)}.toast.pending .toast-dot{background:var(--warning);animation:pulse 1s infinite}.toast-body{flex:1;min-width:0}.toast-title{font-weight:600}.toast-desc{color:var(--text-muted);font-size:12px;margin-top:2px;word-break:break-all}.toast-close{background:transparent;border:none;color:var(--text-dim);padding:0 4px;font-size:16px;line-height:1}@keyframes toast-in{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.82)}}.skel{display:inline-block;min-width:40px;height:1em;vertical-align:middle;background:linear-gradient(90deg,#94a3b814,#94a3b82e,#94a3b814);background-size:200% 100%;animation:skel 1.2s infinite;border-radius:6px}@keyframes skel{0%{background-position:200% 0}to{background-position:-200% 0}}@media (min-width: 640px){.app{max-width:640px;padding:calc(var(--safe-top) + 24px) calc(var(--safe-right) + 24px) calc(var(--safe-bottom) + 140px) calc(var(--safe-left) + 24px)}.grid-2{grid-template-columns:repeat(4,1fr)}.brand-title{font-size:17px}}