*{margin:0;padding:0;box-sizing:border-box}:root{--color-bg: #f8fafc;--color-surface: #ffffff;--color-border: #e2e8f0;--color-text: #1e293b;--color-text-secondary: #64748b;--color-accent: #1e5a8a;--color-accent-hover: #164569;--color-accent-light: #e0f2fe;--color-solar: #f59e0b;--radius-md: 12px;--radius-lg: 16px}body{font-family:Lato,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.5;color:var(--color-text);background:var(--color-bg);min-height:100vh}.app{max-width:1200px;margin:0 auto;padding:32px 24px}.selection-zone{display:flex;flex-direction:column;align-items:center;padding-top:16px}.selection-zone.hidden{display:none}.selection-hint{font-size:15px;color:var(--color-text-secondary);text-align:center;margin-bottom:16px}.preview-container{position:relative;width:100%;max-width:1000px;border-radius:var(--radius-md);overflow:hidden;background:var(--color-surface);box-shadow:0 4px 20px #0000001f}.preview-container 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