*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f4f5f7;--surface: #ffffff;--border: #e1e4e8;--border-focus: #f47920;--text: #1a2332;--text-muted: #6b7280;--text-light: #9ca3af;--accent: #f47920;--accent-hover: #d4640a;--green: #16a34a;--amber: #d97706;--red: #dc2626;--warn-bg: #fffbeb;--warn-border: #fcd34d;--danger-bg: #fef2f2;--danger-border: #fca5a5;--ieepa-bg: #fff5ee;--ieepa-border: #fbbf8a;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -2px rgba(0,0,0,.05);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;color:var(--text);background:var(--bg);line-height:1.5}.app{min-height:100vh;display:flex;flex-direction:column}.app-main{flex:1;max-width:1200px;margin:0 auto;padding:24px 20px 48px;width:100%;display:flex;flex-direction:column;gap:20px}.app-header{background:var(--surface);border-bottom:1px solid 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