:root{--header-bg-start: #1e3c72;--header-bg-end: #2a5298;--header-bg-overlay-opacity: .8;--header-bg-fallback-start: #1a365d;--header-bg-fallback-end: #2c5282;--header-gradient-direction: 135deg;--container-max-width: 1440px;--primary-color: #3498db;--secondary-color: #2c3e50;--accent-color: #e74c3c;--background-color: #f8f9fa;--text-color: #333;--light-text: #7f8c8d;--border-color: #ddd;--bg-primary: #f3f3f3;--bg-secondary: #f3f3f3;--font-family-base: "Pretendard", -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;--font-size-base: 16px;--line-height-base: 1.5;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--container-padding: 20px;--border-radius: 4px;--box-shadow: 0 2px 4px rgba(0, 0, 0, .1);--transition-speed: .3s;--transition-ease: cubic-bezier(.4, 0, .2, 1);--modal-overlay-bg: rgba(0, 0, 0, .5);--modal-bg: white;--modal-border-radius: 8px;--modal-shadow: 0 4px 20px rgba(0, 0, 0, .15);--modal-max-width: 500px;--modal-width: 90%;--modal-max-height: 80vh;--modal-z-index: 1050;--modal-padding: 20px 24px;--modal-header-padding: 20px 24px 16px;--modal-footer-padding: 16px 24px 24px;--card-bg: white;--card-border-radius: 12px;--card-shadow: 0 4px 6px rgba(0, 0, 0, .07);--card-shadow-hover: 0 8px 25px rgba(0, 0, 0, .15);--card-border: 1px solid rgba(0, 0, 0, .05);--card-padding: 1.5rem;--card-hover-transform: translateY(-4px);--highlight-title-bg: #fff3cd;--highlight-title-color: #856404;--highlight-abstract-bg: #fff3cd;--highlight-abstract-color: #856404;--highlight-keyword-bg: #e3f2fd;--highlight-keyword-color: #1565c0;--highlight-contributor-bg: #f3e5f5;--highlight-contributor-color: #7b1fa2;--highlight-padding: 1px 2px;--highlight-border-radius: 2px;--btn-primary-bg: #007bff;--btn-primary-bg-hover: #0056b3;--btn-primary-color: white;--btn-secondary-bg: #6c757d;--btn-secondary-bg-hover: #545b62;--btn-secondary-color: white;--btn-border-radius: 4px;--btn-padding: 8px 16px;--btn-font-size: 14px;--btn-font-weight: 500;--btn-min-width: 80px;--btn-gap: 4px;--input-border-color: #e9ecef;--input-border-color-focus: #007bff;--input-border-radius: 4px;--input-padding: .5rem .75rem;--input-font-size: 14px;--input-bg: white;--input-shadow-focus: 0 0 0 .2rem rgba(0, 123, 255, .25);--status-success: #28a745;--status-warning: #ffc107;--status-danger: #dc3545;--status-info: #17a2b8;--status-success-light: #d4edda;--status-warning-light: #fff3cd;--status-danger-light: #f8d7da;--status-info-light: #d1ecf1;--z-dropdown: 1000;--z-sticky: 1020;--z-fixed: 1030;--z-modal-backdrop: 1040;--z-modal: 1050;--z-popover: 1060;--z-tooltip: 1070;--grid-gap-sm: 1rem;--grid-gap-md: 1.5rem;--grid-gap-lg: 2rem;--grid-min-width: 300px;--list-item-padding: 1rem;--list-item-border: 1px solid var(--border-color)}