:root{color-scheme:light;--bg:#f5f7fa;--card:#fff;--border:#e4e7ec;--border-strong:#d0d5dd;--text:#101828;--muted:#667085;--primary:#2563eb;--primary-strong:#1d4ed8;--primary-soft:#eff4ff;--success-soft:#f0fdf4;--success-border:#bbf7d0;--warn-soft:#fffbeb;--warn-border:#fde68a;--error:#b42318;--error-soft:#fef3f2;--radius:14px;--radius-sm:10px;--shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08)}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.5}.shell{min-height:100dvh;display:flex;flex-direction:column}.topbar{background:var(--card);border-bottom:1px solid var(--border)}.topbar-inner{max-width:520px;margin:0 auto;padding:10px 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var(--warn-border)}.link{color:var(--primary);font-weight:500}.muted{color:var(--muted)}.small{font-size:.82rem}.mb0{margin-bottom:0}.center{text-align:center}.seller-line{color:var(--muted);font-size:.9rem;margin:0 0 10px}.seller-line strong{color:var(--text);font-weight:600}.method-amount{font-weight:700;white-space:nowrap}.method-card[data-selected=true] .method-amount{color:var(--primary-strong)}.fee-breakdown{background:var(--bg);border-radius:var(--radius-sm);padding:10px 12px;margin-bottom:12px;display:flex;flex-direction:column;gap:6px;font-size:.85rem}.fee-row{display:flex;justify-content:space-between;color:var(--muted)}.fee-row.fee-total{color:var(--text);font-weight:600;border-top:1px solid var(--border);padding-top:6px}.guarantee{color:#15803d;font-size:.82rem;margin:8px 0 0}.req-id,.trust-footer{color:var(--muted);font-size:.78rem}.trust-footer{display:block;margin:12px 0 0;text-align:center}.trust-footer 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