:root{--primary-color: #FF6B35;--primary-dark: #FF4500;--bg-outer: #0a0a0f;--bg-inner: #121218;--bg-panel: #1a1a24;--bg-accent: rgba(255, 255, 255, .04);--border-soft: rgba(255, 255, 255, .08);--text-primary: #ffffff;--text-secondary: #a1a1aa;--text-muted: #71717a;--shadow-xl: 0 40px 90px -40px rgba(0, 0, 0, .85);--radius-lg: 28px;--radius-md: 18px;--radius-sm: 12px;--transition: all .25s cubic-bezier(.4, 0, .2, 1);--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%}body{font-family:var(--font-family);background:linear-gradient(150deg,var(--bg-outer) 0%,#11111a 55%,#161622 100%);color:var(--text-primary);padding:40px 24px}.calculator-page{width:100%;max-width:1080px;margin:0 auto}.calculator-shell{background:var(--bg-inner);border-radius:var(--radius-lg);padding:48px;box-shadow:var(--shadow-xl);border:1px solid 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