:root{--bg-deep-abyss: #050d1a;--bg-ocean-dark: #0a192f;--bg-ocean-surface: #0f2744;--bg-ocean-subtle: #143257;--bg-light-surface: #ffffff;--bg-light-subtle: #f8fafc;--bg-light-muted: #f1f5f9;--brand-azure: #0ea5e9;--brand-azure-glow: rgba(14, 165, 233, .35);--brand-cyan: #38bdf8;--brand-blue: #0284c7;--brand-blue-deep: #0369a1;--brand-accent-gold: #f59e0b;--text-main: #0f172a;--text-muted: #475569;--text-dim: #64748b;--text-inverse: #f8fafc;--text-inverse-muted: #cbd5e1;--text-inverse-dim: #94a3b8;--border-light: #e2e8f0;--border-light-hover: #cbd5e1;--border-dark: rgba(56, 189, 248, .18);--border-dark-hover: rgba(56, 189, 248, .45);--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;--shadow-sm: 0 1px 3px rgba(15, 23, 42, .05);--shadow-md: 0 4px 14px rgba(15, 23, 42, .08);--shadow-lg: 0 12px 28px rgba(15, 23, 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