:root{--color-primary: #4f46e5;--color-primary-hover: #4338ca;--color-danger: #dc2626;--color-danger-hover: #b91c1c;--color-success: #16a34a;--color-warning: #d97706;--color-bg: #f8fafc;--color-surface: #ffffff;--color-border: #e2e8f0;--color-text: #1e293b;--color-text-secondary: #64748b;--color-recording: #ef4444;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .1);--shadow-lg: 0 4px 12px rgba(0, 0, 0, .1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Hiragino Sans,Noto Sans JP,sans-serif;background-color:var(--color-bg);color:var(--color-text);line-height:1.6}.loading{display:flex;align-items:center;justify-content:center;height:100vh;font-size:1.1rem;color:var(--color-text-secondary)}.layout{min-height:100vh;display:flex;flex-direction:column}.header{background:var(--color-surface);border-bottom:1px solid var(--color-border);padding:0 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