:root {
    color-scheme: light;
    --color-brand-50: #fff4f2;
    --color-brand-100: #ffe3df;
    --color-brand-600: #b42318;
    --color-brand-700: #951f16;
    --color-brand-800: #7a1d16;
    --color-ink-950: #17202b;
    --color-ink-800: #283444;
    --color-ink-600: #526170;
    --color-ink-500: #687786;
    --color-surface: #ffffff;
    --color-surface-muted: #f3f5f7;
    --color-canvas: #e8edf1;
    --color-border: #cbd4dc;
    --color-border-strong: #8d9aa6;
    --color-success-700: #176b45;
    --color-success-100: #dff4e8;
    --color-error-700: #a51d24;
    --color-error-100: #fde7e8;
    --color-focus: #0b66c3;
    --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: clamp(1.375rem, 3vw, 1.75rem);
    --font-size-2xl: clamp(2rem, 7vw, 4.5rem);
    --line-height-tight: 1.15;
    --line-height-base: 1.5;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --shadow-sm: 0 1px 2px rgba(23, 32, 43, 0.08);
    --shadow-lg: 0 1.5rem 4rem rgba(23, 32, 43, 0.18);
    --content-width: 75rem;
    --touch-target: 3rem;
    --transition-fast: 160ms ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-family: var(--font-sans);
    line-height: var(--line-height-base);
    text-size-adjust: 100%;
}

body {
    color: var(--color-ink-950);
    background: var(--color-canvas);
}

button,
input,
select,
textarea {
    font: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

:where(a, button, input, select, textarea, [tabindex]):focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}

.skip-link {
    position: fixed;
    top: var(--space-3);
    left: var(--space-3);
    z-index: 10000;
    padding: var(--space-3) var(--space-4);
    color: var(--color-surface);
    background: var(--color-ink-950);
    border-radius: var(--radius-sm);
    transform: translateY(calc(-100% - var(--space-6)));
    transition: transform var(--transition-fast);
}

.skip-link:focus {
    transform: translateY(0);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}