:root{--pihgo-ink: #152033;--pihgo-blue-deep: #1535b8;--pihgo-blue-electric: #0874f1;--pihgo-blue-sky: #0099fa;--pihgo-logo-gradient-dark: linear-gradient(65deg, #4f79ff 0%, #28a4ff 55%, #65ceff 100%);--pihgo-brand-gradient: linear-gradient(65deg, #1535b8 0%, #0874f1 55%, #0099fa 100%);--color-bg: #f5f8fc;--color-surface: #ffffff;--color-text: #152033;--color-text-muted: #53627a;--color-border: #dce4f0;--color-primary: #1535b8;--color-primary-hover: #102a96;--color-on-primary: #ffffff;--color-link: #1535b8;--color-selection: #eaf1ff;--color-on-selection: #1535b8;--color-focus-ring: #1535b8;--color-success: #0f7b68;--color-warning: #a85b06;--color-danger: #c3344a;--color-success-bg: #e8f6f1;--color-warning-bg: #fff4e2;--color-danger-bg: #fdecf0;--font-sans: "Inter", "Noto Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;--font-weight-body: 400;--font-weight-heading: 600;--text-hero: 3rem;--line-hero: 1.25;--text-heading: 2rem;--line-heading: 1.375;--text-subheading: 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